CN101870877B - Oil-stone separating tank and oil-stone separating method - Google Patents
Oil-stone separating tank and oil-stone separating method Download PDFInfo
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- CN101870877B CN101870877B CN 201010211459 CN201010211459A CN101870877B CN 101870877 B CN101870877 B CN 101870877B CN 201010211459 CN201010211459 CN 201010211459 CN 201010211459 A CN201010211459 A CN 201010211459A CN 101870877 B CN101870877 B CN 101870877B
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Abstract
The invention belongs to the technical field of equipment for separating asphalt from stone in waste and used asphalt pavements and discloses an oil-stone separating tank and an oil-stone separating method. The oil-stone separating tank is mainly and technically characterized by comprising a tank body, wherein the upper end of the tank body is provided with a feed inlet and a solvent inlet, while the lower end is provided with a discharge outlet and a solvent outlet; a discharge door capable of opening and closing is arranged in the tank body and at a position close to the lower side, the discharge door has a two-layer structure, the upper surface of the discharge door is a filter baffle, the middle is a filtrate chamber which is communicated with the solvent outlet, the solvent outlet is connected with the solvent inlet through a circulating oil pipe which is positioned outside the tank body, and the circulating oil pipe is connected with a mixed oil output pipe and a solvent compensating pipe; and the mixed oil output pipe is provided with a first valve and the solvent compensating pipe is provided with a second valve. Thus, the obtained asphalt basically avoids slit and has high quality.
Description
Technical field
The invention belongs to waste asphalt pavement medium pitch and stone separating device technical field, relate in particular to a kind of oil-stone separating tank.
Background technology
After bituminous pavement after the breakage is taken off, owing to reasons such as technology, often it is used as rubbish and throws away, not only caused waste, but also can cause environmental pollution, adopt and in oil-stone separating tank, slough pitch by solvent oil and collect respectively pitch and the stone processing.At present, device for separating oilstone adopts a large tank mostly, after waste asphalt pavement is pulverized, soak in large tank with solvent oil, like this, every processing one tank waste asphalt pavement approximately needs two days, inefficiency not only, and novel solvent oil is all adopted in each immersion, after handling, the concentration of solvent oil medium pitch is low, and the pitch that reclaims with amount needs the time long.In order to reduce soak time, stirred in oil-stone separating tank afterwards, earth is blended in the mixing oil, when separate bitumen, in the pitch earth mix many, poor performance.
Summary of the invention
First technical problem that the present invention solves just provides a kind of efficient height, is swift in response, collects the high oil-stone separating tank of pitch purity.
For solving the problems of the technologies described above, the technical scheme that oil-stone separating tank of the present invention adopts is: comprise tank body, with opening for feed and solvent inlet, the lower end is with discharge port and solvent outlet in described tank body upper end; Be provided with able to turn on or off discharge door below close in described tank body, described discharge door is bilayer structure, its upper surface is for filtering baffle plate, the centre is the filtrate chamber, described filtrate chamber is communicated with described solvent outlet, described solvent outlet is by being positioned at the described tank body outside and being connected with described solvent inlet with the circulating pipe of recycle pump, is connected with the mixing oil output tube and solvent fills into pipe at described circulating pipe; Be provided with the first valve at described mixing oil output tube, fill into pipe at described solvent and be provided with the second valve.
Its additional technical feature is:
Be connected with the temporary tank of solvent oil between described solvent outlet and the described circulating pipe;
Described filtration baffle plate is the baffle plate that is provided with the filtrate small opening;
Described filtration baffle plate is filter screen;
Be provided with and upflow tube near described tank body upper end, described upflow tube is connected with the temporary tank of described solvent oil;
Below described opening for feed, be provided with the charging supporting plate, above described charging supporting plate, be provided with the charging scraper plate that connects by actuating unit, popping one's head in described material probe and described actuating unit control linkage near being provided with material above the described opening for feed.
Second technical problem that the present invention solves just provides and a kind ofly can make things convenient for the oil-stone separating method that contains hardly silt in the separating waste, worn bituminous pavement in the stone and pitch and pitch.
For solving the problems of the technologies described above, the technical scheme that oil-stone separating method of the present invention adopts is:
The method comprises the following steps:
The first step, the pulverizing waste bituminous pavement
The bituminous pavement that transportation is come is ground into bulk through pulverizer, obtains the waste asphalt pavement crushed material;
Second step, charging
Close discharge door, the waste asphalt pavement crushed material is joined in the tank body through opening for feed, certain space is left on the tank body top;
In the 3rd step, add novel solvent oil
Open solvent and fill into the second valve on the pipe, in tank body, add novel solvent oil, the solvent oil that injects is along the slit between the waste asphalt pavement crushed material to dirty, and process is filtered, and baffle plate enters the filtrate chamber and solvent oil is kept in the tank, along with the increase of solvent oil, so that the solvent oil liquid level is higher than the upper surface of waste asphalt pavement crushed material;
The 4th step, wash cycles and immersion
When in the temporary tank of solvent oil solvent oil when reaching a certain height, open the recycle pump on the circulation tube, close solvent and fill into the second valve on the pipe, solvent oil in the temporary tank of solvent oil is transported to the tank body top through solvent inlet, continue to clean and soak the waste asphalt pavement crushed material, wash cycles and immersion 20-50 minute;
In the 5th step, collect pitch and solvent oil
Open the first valve on the mixing oil output tube, the mixing oil that contains pitch in the temporary tank of solvent oil is transported to Separation and Recovery in the separated from bitumen container;
In the 6th step, reclaim stone
Open discharge door, the discharge of the stone through cleaning and soaking is got final product.
Its additional technical feature is:
After carrying out for the 5th step, operate at least one times since the 3rd step to the 5th step recirculation.
Oil-stone separating tank provided by the present invention compared with prior art has the following advantages: one, owing to comprise tank body, with opening for feed and solvent inlet, the lower end is with discharge port and solvent outlet in described tank body upper end; Be provided with able to turn on or off discharge door below close in described tank body, described discharge door is bilayer structure, its upper surface is for filtering baffle plate, the centre is the filtrate chamber, described filtrate chamber is communicated with described solvent outlet, described solvent outlet is by being positioned at the described tank body outside and being connected with described solvent inlet with the circulating pipe of recycle pump, is connected with the mixing oil output tube and solvent fills into pipe at described circulating pipe; Be provided with the first valve at described mixing oil output tube, fill into pipe at described solvent and be provided with the second valve, at first close discharge door, after the waste asphalt pavement pulverizing, put into the tank body of oil-stone separating tank, open solvent and fill into the second valve on the pipe, in tank body, pass into novel solvent oil, the solvent oil that injects is along the slit between the waste asphalt pavement crushed material to dirty, and process filtration baffle plate enters the filtrate chamber, increase along with solvent oil, so that solvent oil is immersed on the waste asphalt pavement crushed material, close solvent and fill into the second valve on the pipe this moment, the oil pump of ON cycle oil pipe, mixing oil under the filter is transported to again the upper end of waste asphalt pavement crushed material by solvent inlet, solvent oil flow downward and immersion process in, the pitch that is fixed together with stone is dissolved in the solvent oil, along with flowing of solvent oil breaks away from stone, and the silt that spins off from the waste asphalt pavement crushed material, at mixing oil from the tank body top flows downward process, the stone of separating and the grains of sand play again the effect of filtration, silt is filtered in the stone, like this, after several times circulation, pitch on the waste asphalt pavement crushed material in the tank body all is dissolved in the solvent oil basically, and from the mixing oil that contains pitch that flow out in the filtrate chamber, contain hardly silt, at this moment, open the first valve on the mixing oil output tube, the miscella that will contain pitch is delivered to recovery in the bitumen recovery case, because causing silt, stirring enters into the problem of the pitch of recovery along with the mixed solvent oil that contains pitch when having solved present processing waste asphalt pavement crushed material, so that the pitch that reclaims does not contain silt, quality is good; They are two years old, owing to be connected with the temporary tank of solvent oil between described solvent outlet and the described circulating pipe, can the sectional area of the total area of the total area of the filtrate small opening on the baffle plate or described opening of sieve less than circulating pipe will be filtered like this, improve the time that solvent oil soaks the waste asphalt pavement crushed material, solvent oil slowly is filled in the temporary tank of solvent oil temporary, after solvent oil in the temporary tank of solvent oil reaches certain amount, this moment the ON cycle oil pipe oil pump, mixing oil under the filter is transported to again the upper end of waste asphalt pavement crushed material by solvent inlet, when solvent oil was less in the temporary tank of solvent oil, the oil pump that close circulating pipe this moment got final product; Its three owing to be provided with and upflow tube near tank body upper end, described upflow tube is connected with described circulating pipe, when the liquid level of solvent oil is high, prevents from overflowing to atmospheric pollution and the danger generation of blast is arranged; They are four years old, owing to below described opening for feed, be provided with the charging supporting plate, above described charging supporting plate, be provided with the charging scraper plate that connects by actuating unit, popping one's head near being provided with material above the described opening for feed, described material probe and described actuating unit control linkage, in reinforced process, the waste asphalt pavement crushed material drops on the top of charging supporting plate through opening for feed, when height of materials surpasses the material probe, actuating unit starts, drive the charging scraper plate and rotate, material is scraped in the tank body, when the material in the opening for feed is lower than the material probe, actuating unit stops operating, this moment, the height of materials in the opening for feed can raise gradually along with the conveying of material conveyer belt, surpassed again the material probe; Like this, all the time with one section material, after handling a tank, understand residual solvent oil gas body in the tank body at the opening for feed place, residual solvent oil gas can not enter into air along opening for feed along with the adding of material in the tank body, and the pitch in the material can also play adsorption to solvent oil; When reinforced in tank body, uppermost waste asphalt pavement crushed material is uneven, near material local opening for feed is high, and the material in the place far away apart from opening for feed is low, often needs a lot of solvent oils in order to soak material, and soak inhomogeneous, when the height of materials in the tank body surpasses the charging supporting plate, along with the rotation of charging scraper plate, the material upper surface can be struck off, so that immersion is more even, and can save solvent oil.
Description of drawings
Fig. 1 is the structural representation of oil-stone separating tank of the present invention;
Fig. 2 is the structural representation of oil-stone separating tank discharge door;
Fig. 3 is the sectional view of oil-stone separating tank tank body;
Fig. 4 is the structural representation of the second discharge door;
Fig. 5 is the structural representation with the oil-stone separating tank of the temporary tank of solvent oil.
Embodiment
Be described in further details below in conjunction with structure and the use principle of accompanying drawing to oil-stone separating tank of the present invention.
Such as Fig. 1, Fig. 2 and shown in Figure 3, the structural representation of oil-stone separating tank of the present invention, this oil-stone separating tank comprises tank body 2, in the upper end of tank body 2 with opening for feed 21 and solvent inlet 22, near the lower end of tank body 2 with discharge port 23 and solvent outlet 24; Be provided with able to turn on or off discharge door 3 below close in tank body, discharge door 3 is bilayer structure, upper surface is for filtering baffle plate 31, lower surface is lower closing piece 32, filter baffle plate 31 and lower closing piece 32 and surround filtrate chamber 33, filtrate chamber 33 is communicated with solvent outlet 24, filter baffle plate 31 and be with the baffle plate of filtrate small opening 34 or be as shown in Figure 4 filter screen 35, solvent outlet 24 is connected with solvent inlet 22 by the circulating pipe 4 that is positioned at tank body 2 outsides, and circulating pipe 4 is connected with mixing oil output tube 5 and solvent fills into pipe 6.Be provided with the first valve 51 at mixing oil output tube 5, fill into pipe 6 at solvent and be provided with the second valve 61.
At first close discharge door 3, after the waste asphalt pavement pulverizing, put into the tank body 2 of oil-stone separating tank, open solvent and fill into second valve 61 of managing on 6, in tank body 2, pass into novel solvent oil, the solvent oil that injects is along the slit between the waste asphalt pavement crushed material to dirty, and process filtration baffle plate 31 enters filtrate chamber 33, increase along with solvent oil, so that solvent oil is immersed on the waste asphalt pavement crushed material, close solvent and fill into second valve 61 of managing on 6 this moment, the oil pump 41 of ON cycle oil pipe 4, mixing oil under the filter is transported to again the upper end of waste asphalt pavement crushed material by solvent inlet 22, solvent oil flow downward and immersion process in, the pitch that is fixed together with stone is dissolved in the solvent oil, along with flowing of solvent oil breaks away from stone, and the silt that spins off from the waste asphalt pavement crushed material, at mixing oil from the tank body top flows downward process, the stone of separating and the grains of sand play again the effect of filtration, silt is filtered in the stone, like this, after several times circulation, pitch on the waste asphalt pavement crushed material in the tank body all is dissolved in the solvent oil basically, and from the mixing oil that contains pitch that flow out in the filtrate chamber, contain hardly silt, at this moment, open the first valve 51 on the mixing oil output tube 5, the miscella that will contain pitch is delivered to recovery in the bitumen recovery case, and the pitch of recovery does not contain silt, and quality is good.
Too fast in order to prevent that solvent oil from flowing downward in tank body 2, cause solvent oil can not soak the waste asphalt pavement crushed material, and cause part waste asphalt pavement crushed material fully not contact with solvent oil, the total area of the opening of sieve 36 of the total area of filtrate small opening 34 or filter screen 35 is slightly less than the sectional area of circulating pipe 4, like this, at the solvent oil circulation time, all the time so that the liquid level of solvent oil is higher than waste asphalt pavement crushed material top.
As shown in Figure 5, between solvent outlet 24 and circulating pipe 4, be connected with the temporary tank 7 of solvent oil, can the sectional area of the total area of the total area of the filtrate small opening 34 on the baffle plate 31 or described opening of sieve 36 less than circulating pipe 4 will be filtered like this, improved the time that solvent oil soaks the waste asphalt pavement crushed material, solvent oil slowly is filled in the temporary tank 7 of solvent oil temporary, after the solvent oil in the temporary tank 7 of solvent oil reaches certain amount, this moment ON cycle oil pipe 4 oil pump 41, mixing oil under the filter is transported to again the upper end of waste asphalt pavement crushed material by solvent inlet 22, when the solvent oil in the temporary tank 7 of solvent oil was less, the oil pump 41 that close circulating pipe 4 this moment got final product.
Too high in order to prevent the solvent oil liquid level, be provided with upflow tube 8 near the upper end of tank body 2, upflow tube 8 is connected with the temporary tank 7 of solvent oil, when the liquid level of solvent oil is high, prevents from overflowing to atmospheric pollution and the danger generation of blast is arranged.
Below opening for feed 21, be provided with charging supporting plate 9, above charging supporting plate 9, be provided with the charging scraper plate 92 that connects by actuating unit 91, popping one's head in 93 near being provided with material above the opening for feed 21, material probe 93 and actuating unit 91 control linkages, in reinforced process, the waste asphalt pavement crushed material drops on the top of charging supporting plate 9 through opening for feed 21, when surpassing material, height of materials pops one's head in 93 the time, actuating unit 91 starts, driving charging scraper plate 92 rotates, material is scraped in the tank body, pop one's head in 93 the time when the material in the opening for feed is lower than material, actuating unit 91 stops operating, and this moment is along with the conveying of material conveyer belt, height of materials in the opening for feed 21 can raise gradually, surpasses again material probe 93; Like this, at opening for feed 21 places all the time with one section material, after handling a tank material, tank body 2 interior meeting residual solvent oil gas bodies, tank body 2 interior residual solvent oil gases can not enter into air along opening for feed along with the adding of material, even some gas enters into air by the slit in the material, the pitch in the material can also play adsorption to solvent oil, contains hardly solvent oil in the airborne gas so that enter; Interior when reinforced to tank body 2, waste asphalt pavement crushed material upper surface is uneven, near material local opening for feed 21 is high, and the material in the place far away apart from opening for feed 21 is low, often needs a lot of solvent oils in order to soak material, and soak inhomogeneous, when the height of materials in the tank body surpasses the charging supporting plate, along with the rotation of charging scraper plate, the material upper surface can be struck off, so that immersion is more even, and can save solvent oil.
Embodiment 1
The first step, the pulverizing waste bituminous pavement
The bituminous pavement that transportation is come is ground into bulk through pulverizer, obtains the waste asphalt pavement crushed material;
Second step, charging
Close discharge door, the waste asphalt pavement crushed material is joined in the tank body through opening for feed, certain space is left on the tank body top;
In the 3rd step, add novel solvent oil
Open solvent and fill into the second valve on the pipe, in tank body, add novel solvent oil, the solvent oil that injects is along the slit between the waste asphalt pavement crushed material to dirty, and process is filtered, and baffle plate enters the filtrate chamber and solvent oil is kept in the tank, along with the increase of solvent oil, so that the solvent oil liquid level is higher than the upper surface of waste asphalt pavement crushed material;
The 4th step, wash cycles and immersion
When in the temporary tank of solvent oil solvent oil when reaching a certain height, open the recycle pump on the circulation tube, close solvent and fill into the second valve on the pipe, solvent oil in the temporary tank of solvent oil is transported to the tank body top through solvent inlet, continue to clean and soak the waste asphalt pavement crushed material, wash cycles and immersion 20-50 minute;
In the 5th step, collect pitch and solvent oil
Open the first valve on the mixing oil output tube, the mixing oil that contains pitch in the temporary tank of solvent oil is transported to Separation and Recovery in the separated from bitumen container;
In the 6th step, reclaim stone
Open discharge door, the discharge of the stone through cleaning and soaking is got final product.
The first step, the pulverizing waste bituminous pavement
The bituminous pavement that transportation is come is ground into bulk through pulverizer, obtains the waste asphalt pavement crushed material;
Second step, charging
Close discharge door, the waste asphalt pavement crushed material is joined in the tank body through opening for feed, certain space is left on the tank body top;
In the 3rd step, add novel solvent oil
Open solvent and fill into the second valve on the pipe, in tank body, add novel solvent oil, the solvent oil that injects is along the slit between the waste asphalt pavement crushed material to dirty, and process is filtered, and baffle plate enters the filtrate chamber and solvent oil is kept in the tank, along with the increase of solvent oil, so that the solvent oil liquid level is higher than the upper surface of waste asphalt pavement crushed material;
The 4th step, wash cycles and immersion
When in the temporary tank of solvent oil solvent oil when reaching a certain height, open the recycle pump on the circulation tube, close solvent and fill into the second valve on the pipe, solvent oil in the temporary tank of solvent oil is transported to the tank body top through solvent inlet, continue to clean and soak the waste asphalt pavement crushed material, wash cycles and immersion 20-50 minute;
In the 5th step, collect pitch and solvent oil
Open the first valve on the mixing oil output tube, the mixing oil that contains pitch in the temporary tank of solvent oil is transported to Separation and Recovery in the separated from bitumen container;
The 5th step b, the use novel solvent again cleans and soaks
Since the 3rd step to the recirculation operation of the 5th step at least one times.
In the 6th step, reclaim stone
Open discharge door, the discharge of the stone through cleaning and soaking is got final product.
Certainly, in embodiment 2 the 5th the step b can carry out once, also can carry out once more than.
Protection scope of the present invention not only is confined to above-described embodiment, as long as structure is identical with oil-stone separating tank structure of the present invention, just drops on the scope of protection of the invention.
Claims (8)
1. oil-stone separating tank comprises tank body, it is characterized in that: with opening for feed and solvent inlet, the lower end is with discharge port and solvent outlet in described tank body upper end; Be provided with able to turn on or off discharge door below close in described tank body, described discharge door is bilayer structure, its upper surface is for filtering baffle plate, the centre is the filtrate chamber, described filtrate chamber is communicated with described solvent outlet, described solvent outlet is by being positioned at the described tank body outside and being connected with described solvent inlet with the circulating pipe of recycle pump, is connected with the mixing oil output tube and solvent fills into pipe at described circulating pipe; Be provided with the first valve at described mixing oil output tube, fill into pipe at described solvent and be provided with the second valve; At described circulating pipe oil pump is installed.
2. oil-stone separating tank according to claim 1 is characterized in that: be connected with the temporary tank of solvent oil between described solvent outlet and the described circulating pipe.
3. oil-stone separating tank according to claim 1, it is characterized in that: described filtration baffle plate is the baffle plate that is provided with the filtrate small opening.
4. oil-stone separating tank according to claim 1, it is characterized in that: described filtration baffle plate is filter screen.
5. oil-stone separating tank according to claim 1 is characterized in that: be provided with upflow tube near described tank body upper end, described upflow tube is kept in tank with described solvent oil and is connected.
6. oil-stone separating tank according to claim 1, it is characterized in that: below described opening for feed, be provided with the charging supporting plate, above described charging supporting plate, be provided with the charging scraper plate that connects by actuating unit, popping one's head in described material probe and described actuating unit control linkage near being provided with material above the described opening for feed.
7. right to use requires the method that oil-stone separating tank carries out the oilstone separation in any claim among the 1-6, and it is characterized in that: the method comprises the following steps:
The first step, the pulverizing waste bituminous pavement
The bituminous pavement that transportation is come is ground into bulk through pulverizer, obtains the waste asphalt pavement crushed material;
Second step, charging
Close discharge door, the waste asphalt pavement crushed material is joined in the tank body through opening for feed, certain space is left on the tank body top;
In the 3rd step, add novel solvent oil
Open solvent and fill into the second valve on the pipe, in tank body, add novel solvent oil, the solvent oil that injects is along the slit between the waste asphalt pavement crushed material to dirty, and process is filtered, and baffle plate enters the filtrate chamber and solvent oil is kept in the tank, along with the increase of solvent oil, so that the solvent oil liquid level is higher than the upper surface of waste asphalt pavement crushed material;
The 4th step, wash cycles and immersion
When in the temporary tank of solvent oil solvent oil when reaching a certain height, open the recycle pump on the circulation tube, close solvent and fill into the second valve on the pipe, solvent oil in the temporary tank of solvent oil is transported to the tank body top through solvent inlet, continue to clean and soak the waste asphalt pavement crushed material, wash cycles and immersion 20-50 minute;
In the 5th step, collect pitch and solvent oil
Open the first valve on the mixing oil output tube, the mixing oil that contains pitch in the temporary tank of solvent oil is transported to Separation and Recovery in the separated from bitumen container;
In the 6th step, reclaim stone
Open discharge door, the discharge of the stone through cleaning and soaking is got final product.
8. the method for oilstone separation according to claim 7 is characterized in that: operate at least one times since the 3rd step to the 5th step recirculation after carrying out for the 5th step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010211459 CN101870877B (en) | 2010-06-25 | 2010-06-25 | Oil-stone separating tank and oil-stone separating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010211459 CN101870877B (en) | 2010-06-25 | 2010-06-25 | Oil-stone separating tank and oil-stone separating method |
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| CN101870877A CN101870877A (en) | 2010-10-27 |
| CN101870877B true CN101870877B (en) | 2013-04-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452539B (en) * | 2014-12-05 | 2017-01-04 | 江苏云端重工科技有限公司 | A kind of road old asphalt mixture oilstone separation process units of energy-conserving and environment-protective |
| CN104452538B (en) * | 2014-12-05 | 2017-01-04 | 江苏云端重工科技有限公司 | A kind of road old asphalt mixture device for separating oilstone of energy-conserving and environment-protective |
| CN107350209A (en) * | 2017-08-07 | 2017-11-17 | 无锡市白马机械设备有限公司 | Quick feeding cleans the cleaning machine equipment of automatic material returning |
| CN110917941B (en) * | 2019-12-20 | 2023-08-11 | 长沙理工大学 | Old asphalt mixture oil-stone separation device with biological oil as solvent oil and use method |
| CN112227142A (en) * | 2020-09-30 | 2021-01-15 | 哈尔滨工业大学 | Efficient oilstone separation device for waste asphalt pavement materials based on emulsification method and application thereof |
| CN114752399B (en) * | 2022-03-11 | 2023-10-17 | 刘秀清 | Method for extracting rock asphalt from ore |
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|---|---|---|---|---|
| US5518606A (en) * | 1994-08-01 | 1996-05-21 | Phillips Petroleum Company | Method for treating pitch |
| CN2829841Y (en) * | 2006-04-19 | 2006-10-25 | 夏立元 | Oil stone separator |
| CN200966951Y (en) * | 2006-11-22 | 2007-10-31 | 夏立元 | Filter pot |
| CN101176875A (en) * | 2007-12-12 | 2008-05-14 | 夏立元 | Device for separating oilstone |
| CN201713486U (en) * | 2010-06-25 | 2011-01-19 | 夏立元 | Oil-stone separating tank |
-
2010
- 2010-06-25 CN CN 201010211459 patent/CN101870877B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5518606A (en) * | 1994-08-01 | 1996-05-21 | Phillips Petroleum Company | Method for treating pitch |
| CN2829841Y (en) * | 2006-04-19 | 2006-10-25 | 夏立元 | Oil stone separator |
| CN200966951Y (en) * | 2006-11-22 | 2007-10-31 | 夏立元 | Filter pot |
| CN101176875A (en) * | 2007-12-12 | 2008-05-14 | 夏立元 | Device for separating oilstone |
| CN201713486U (en) * | 2010-06-25 | 2011-01-19 | 夏立元 | Oil-stone separating tank |
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Application publication date: 20101027 Assignee: JIANGSU YUNDUAN HEAVY INDUSTRY TECHNOLOGY CO., LTD. Assignor: Xia Liyuan Contract record no.: 2014320010146 Denomination of invention: Oil-stone separating tank and oil-stone separating method Granted publication date: 20130410 License type: Exclusive License Record date: 20140806 |
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