CN106830605B - Sludge combined treatment method and device - Google Patents
Sludge combined treatment method and device Download PDFInfo
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- CN106830605B CN106830605B CN201710149847.XA CN201710149847A CN106830605B CN 106830605 B CN106830605 B CN 106830605B CN 201710149847 A CN201710149847 A CN 201710149847A CN 106830605 B CN106830605 B CN 106830605B
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- 239000010802 sludge Substances 0.000 title claims abstract description 211
- 238000011282 treatment Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000003921 oil Substances 0.000 claims abstract description 62
- 238000007664 blowing Methods 0.000 claims abstract description 26
- 238000004939 coking Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000003111 delayed effect Effects 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 12
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 7
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 6
- 239000000295 fuel oil Substances 0.000 claims abstract description 6
- 239000000571 coke Substances 0.000 claims description 31
- 238000004064 recycling Methods 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 238000000197 pyrolysis Methods 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 claims description 2
- 238000011284 combination treatment Methods 0.000 claims 1
- 238000005188 flotation Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 7
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005235 decoking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/365—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds from petrochemical industry (e.g. refineries)
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Abstract
The invention relates to the technical field of sludge treatment, in particular to a sludge combined treatment method and device, wherein the sludge combined treatment method comprises the following steps: classifying the sludge, and dividing the sludge into oily sludge and activated sludge; harmless treatment is carried out on the oil-containing sludge through a small steam blowing stage and/or a large steam blowing stage of the delayed coking device, water and light oil in the oil-containing sludge are distilled out by utilizing high-temperature heat in a coking device and are recovered in the coking device, heavy oil contained in the activated sludge is cracked and condensed in the coking device, and oil and hydrocarbon-containing gas are recovered in the coking device; and drying and dehydrating the activated sludge. According to the sludge combined treatment method and device, the outward discharge amount of pollutants can be reduced according to different oil contents, energy consumption is not needed, steam consumption is reduced, energy saving is realized while emission is reduced, the running cost of a coking device is reduced, and compared with the traditional drying method, the solid condensate is thoroughly treated.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a sludge combined treatment method and device.
Background
The petrochemical sludge generally comprises three types (commonly called as three types of sludge): the oil separation tank bottom sludge, floating scum and residual activated sludge have very complex compositions and contain a large amount of harmful substances, and the sludge has special properties, large dehydration and treatment technical difficulties and high cost. Because of its high content of residuum, organics and heavy metals, it is a serious pollutant, and as the quality of crude oil in refineries becomes worse and the quantity increases, the yield of three mud increases greatly.
At present, most refineries simply dehydrate three-mud and then carry out external commission treatment, the cost of each ton of external commission treatment is up to 1500-3000 yuan, and the treatment cost is high. The existing three-mud harmless treatment method has the defects of high cost and unsatisfactory treatment effect. At present, the conventional treatment method comprises the steps of drying activated sludge to be burnt as coke, and pre-treating oily sludge by dirty oil and then drying the oily sludge by sludge.
The treatment method of the oily sludge generally comprises the following modes:
incineration method: the oily sludge after the pretreatment of pre-dehydration and concentration is sent to an incinerator for incineration, the temperature is higher than 800-850 ℃, and the incinerated slag needs to be further treated.
Thermal desorption method: a modified sludge high-temperature treatment method is provided, which comprises heating oily sludge to a certain temperature under the anaerobic condition to desorb hydrocarbons and organic matters.
Sludge bioreactor process: a container for diluting oil-containing sludge in nutrient medium to become slurry state is composed of bioreactor for biologically degrading hydrocarbon substance by artificial control of oxygenation, temp and nutrients.
Solvent extraction: after the oil substances are extracted from the sludge by the solvent, the solvent is separated from the mixture by distillation for recycling.
The oil sludge treatment process of the oil refining sewage treatment field comprises the following steps: concentrating and dehydrating the oil sludge, adding a certain amount of flocculant to improve the dehydration performance of the oil sludge, and then mechanically dehydrating the oil sludge.
The oil-water extraction and separation is used as a coking medium method: the dirty oil and the fatlute are subjected to three-phase separation of oil, water and mud after being heated in a dirty oil tank, then water is cut, the rest dirty oil and fatlute after water cutting are settled by an fatlute tank, the rest fatlute at the bottom of the tank enters a gravity concentration tank for concentration and then is sent to a coking device, the coking device is used as a quenching medium for cooling hot coke before decoking, and the water separated from the fatlute can be used as cold coke water or cut coke water for recycling.
However, in the above-mentioned oil-containing sludge treatment methods, oil-water separation is generally incomplete, the oil content of the separated sludge is high, and the energy consumption and the treatment cost in the post-treatment process are high. For example, the incineration method has the problems of secondary pollution in the incineration process, high energy consumption, high treatment cost in the thermal desorption method, and high investment cost or high operation cost in the operation process of high steam consumption in other treatment methods.
Disclosure of Invention
The invention aims to provide a sludge combined treatment method and device, which are used for solving the technical problems of incomplete treatment, high energy consumption cost and the like in the treatment process in the prior art.
To achieve the purpose, the invention adopts the following technical scheme:
a sludge combined treatment method comprises the following steps:
classifying the sludge, and dividing the sludge into oily sludge and activated sludge;
harmless treatment is carried out on the oil-containing sludge through a small steam blowing stage and/or a large steam blowing stage of the delayed coking device, light oil and water in the oil-containing sludge are evaporated by utilizing heat in a coke tower, and heavy oil is condensed and cracked;
and drying and dehydrating the activated sludge.
Furthermore, the small steam blowing and/or large steam blowing stage of the delayed coking device is used for carrying out atomization treatment on the oil-containing sludge through an atomizer, and part of the oil-containing sludge replaces steam to be used as a small steam blowing and/or large steam blowing medium of the coke tower.
Further, the oil-water treatment in the oil-containing sludge is to utilize high-temperature heat in the coke tower to evaporate water and light oil components in the oil-containing sludge, heavy oil in the oil-containing sludge is partially cracked into light oil and hydrocarbon gas in the coke tower and partially condensed into coke, and solids in the oil-containing sludge enter the coke to become ash of the coke.
Further, after innocent treatment is carried out on the oily sludge, the oil in the oily sludge is converted into light oil and hydrocarbon-containing gas for recycling, and the solid in the oily sludge is remained in the coke produced by coking, condensation and pyrolysis.
Further, the oily sludge comprises oil separation tank bottom sludge and floatation scum.
The invention also provides a sludge combined treatment device, which comprises oily sludge treatment equipment and activated sludge treatment equipment; the oily sludge treatment equipment comprises an oily sludge tank, wherein the oily sludge tank is connected with an oily sludge recycling pump, the oily sludge recycling pump is connected with an oily sludge inlet of an atomizer, the atomizer is connected with a steam pipe network through a steam inlet, and an outlet of the atomizer is connected with a coke tower;
the activated sludge treatment equipment comprises an activated sludge tank, wherein the activated sludge tank is connected with a sludge drier through an activated sludge delivery pump, and the sludge drier comprises a tail gas absorption system.
Further, the oily sludge treatment equipment comprises an oily sludge standing system, the activated sludge equipment comprises an activated sludge standing system, and the oily sludge standing system and the activated sludge standing system are respectively connected with the oily sludge tank and the activated sludge tank through conveying devices.
When the sludge combined treatment method and device provided by the invention are used, the oil-containing sludge and the activated sludge are subjected to classification treatment, the oil-containing sludge is treated by means of heat in a coke tower in a small steam blowing stage and/or a large steam blowing stage of a delayed coking device, other energy sources are not added in the process of treating the oil-containing sludge, steam is saved, and the residual activated sludge after the reduction treatment is concentrated and dried to achieve the aim of recycling the sludge.
According to the sludge combined treatment method and device, sludge is subjected to classification treatment to achieve reduction treatment, so that investment cost and operation cost are reduced, the operation cost is not increased in the treatment process of the oily sludge, an energy-saving effect is achieved, and the sludge is thoroughly treated.
Drawings
FIG. 1 is a flow chart of a sludge combined treatment method provided in embodiment 1 of the present invention;
FIG. 2 is a block diagram showing the construction of an oily sludge treatment apparatus of the sludge combined treatment apparatus according to embodiment 2 of the present invention;
fig. 3 is a block diagram showing the structure of an activated sludge treatment apparatus of the sludge combined treatment apparatus according to embodiment 2 of the present invention.
In the figure:
1. an oily sludge tank; 2. an oil-containing sludge recycling pump; 3. an atomizer; 4. a steam pipe network; 5. a coke drum; 6. an activated sludge tank; 7. an activated sludge transfer pump; 8. a sludge drier; 9. and an exhaust gas absorption system.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Example 1
As shown in fig. 1, a sludge combined treatment method comprises the following steps:
classifying the sludge, and dividing the sludge into oily sludge and activated sludge; wherein the oily sludge comprises oil separation tank bottom sludge and floatation scum;
the oily sludge is subjected to innocent treatment through a small steam blowing stage and/or a large steam blowing stage of the delayed coking device, light oil and water in the oily sludge are evaporated by utilizing the heat in the coke tower 5, and heavy oil is subjected to condensation pyrolysis;
the small steam blowing and/or large steam blowing stage of the delayed coking device is used for atomizing the oil-containing sludge through the atomizer 3, and the oil-containing sludge replaces part of steam to be used as a small steam blowing and/or large steam blowing medium of the coke tower 5.
And drying and dehydrating the activated sludge.
The treatment of oil in the sludge is difficult in the drying process of the sludge (three-sludge), and the property of the three-sludge is changeable, so that the oil-water separation is more difficult. If the oily sludge enters a drying system, three adverse factors are caused, firstly VOC can be possibly generated, secondly, the engineering cost is increased because the system needs explosion protection, and furthermore, various chemical agents are needed to be added for oil-water separation, so that the construction investment and the operation cost are increased.
Therefore, the invention sends the oily sludge which is difficult to treat in the conventional method to a delayed coking device for treatment, thereby realizing the reduction treatment. And the oil-containing sludge is treated by the delayed coking device, so that the steam consumption is not increased in the treatment process, the steam consumption in the small steam blowing and/or large steam blowing process of the coking device can be reduced, the sludge quantity of the whole sludge drying is finally reduced, and the whole investment and the drying steam consumption of the sludge treatment are also reduced. Therefore, the combined technology of the sludge treatment can greatly reduce the overall investment and the running cost.
The oily sludge and the activated sludge can be treated in parallel, and the oily sludge and the activated sludge are not distinguished in the treatment procedure.
The oil-containing sludge is recycled after innocent treatment, and solid matters contained in the oil-containing sludge are left in coke produced by coking condensation pyrolysis after coking treatment, so that the ash content of the coke is not influenced by a small amount of solid matters in the sludge due to the huge overall yield of the coke.
The sludge combined treatment method has the beneficial effects that:
the final treatment capacity of the oil-containing sludge is classified and reduced, the characteristics of the delayed coking device and the oil-containing sludge are comprehensively utilized, the treatment cost of treating the oil-containing sludge in the small steam blowing and/or large steam blowing stage of the delayed coking device is low, the treatment effect is good, the follow-up treatment working sections such as sludge drying and the like are not needed, and the running cost and the investment cost of the whole sludge treatment are greatly saved. Compared with the common sludge treatment technology, the three-sludge treatment rate can be 100%, the investment and the running cost are more advantageous, the process operation is simple, the operation is convenient, and the investment and the running cost are reasonable.
Example 2
As shown in fig. 2 and 3, a sludge combined treatment apparatus includes an oily sludge treatment device and an activated sludge treatment device; the oily sludge treatment equipment comprises an oily sludge tank 1, wherein the oily sludge tank 1 is connected with an oily sludge recycling pump 2, the oily sludge recycling pump 2 is connected with an oily sludge inlet of an atomizer 3, the atomizer 3 is connected with a steam pipe network 4 through a steam inlet, and an outlet of the atomizer 3 is connected with a coke tower 5;
the activated sludge treatment equipment comprises an activated sludge tank 6, the activated sludge tank 6 is connected with a sludge drier 8 through an activated sludge delivery pump 7, and the sludge drier 8 comprises a tail gas absorption system 9.
The oily sludge treatment equipment comprises an oily sludge standing system, the activated sludge equipment comprises an activated sludge standing system, and the oily sludge standing system and the activated sludge standing system are respectively connected with the oily sludge tank 1 and the activated sludge tank 6 through conveying devices.
The sludge combined treatment device combines the sludge combined treatment method in the embodiment 1 to carry out classification treatment on the three sludge, thereby realizing more thorough treatment, and has the advantages of simple structure, convenient operation, low energy consumption and low cost.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (5)
1. The sludge combined treatment method is characterized by comprising the following steps of:
classifying the sludge, and dividing the sludge into oily sludge and activated sludge;
harmless treatment is carried out on the oil-containing sludge through a small steam blowing stage and/or a large steam blowing stage of the delayed coking device, light oil and water in the oil-containing sludge are evaporated by utilizing heat in a coke tower, and heavy oil is condensed and cracked;
drying and dehydrating the activated sludge;
the small steam blowing and/or large steam blowing stage of the delayed coking device is used for carrying out atomization treatment on the oil-containing sludge through an atomizer, and part of the oil-containing sludge replaces steam to be used as a small steam blowing and/or large steam blowing medium of the coke tower;
the oil-water treatment in the oil-containing sludge is to evaporate water and light oil components in the oil-containing sludge by utilizing high-temperature heat in a coke tower, heavy oil in the oil-containing sludge is partially cracked into light oil and hydrocarbon gas in the coke tower and partially condensed into coke, and solids in the oil-containing sludge enter the coke to become ash of the coke.
2. The method according to claim 1, wherein the oily sludge is subjected to innocent treatment, and the oily sludge is recovered after the oily sludge is converted into light oils and hydrocarbon-containing gas, and solids contained in the oily sludge remain in coke produced by coking, condensation and pyrolysis.
3. The method of claim 1, wherein the oily sludge comprises a bottom sludge of an oil separator and flotation froth.
4. A combined sludge treatment apparatus for carrying out the combined sludge treatment method as claimed in any one of claims 1 to 3, characterized by comprising an oily sludge treatment facility and an activated sludge treatment facility; the oily sludge treatment equipment comprises an oily sludge tank (1), wherein the oily sludge tank (1) is connected with an oily sludge recycling pump (2), the oily sludge recycling pump (2) is connected with an oily sludge inlet of an atomizer (3), the atomizer (3) is connected with a steam pipe network (4) through a steam inlet, an outlet of the atomizer (3) is connected with coke drums (5), and the number of the coke drums (5) is two;
the activated sludge treatment equipment comprises an activated sludge tank (6), wherein the activated sludge tank (6) is connected with a sludge drier (8) through an activated sludge delivery pump (7), and the sludge drier (8) comprises a tail gas absorption system (9).
5. The sludge combination treatment apparatus as claimed in claim 4, wherein the oily sludge treatment device comprises an oily sludge standing system, the activated sludge device comprises an activated sludge standing system, and the oily sludge standing system and the activated sludge standing system are respectively connected with the oily sludge tank (1) and the activated sludge tank (6) through a conveying device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834410.5A CN106277677A (en) | 2016-09-20 | 2016-09-20 | A kind of mud combination treatment method and device |
| CN2016108344105 | 2016-09-20 |
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| Publication Number | Publication Date |
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| CN106830605A CN106830605A (en) | 2017-06-13 |
| CN106830605B true CN106830605B (en) | 2023-05-30 |
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| CN201610834410.5A Pending CN106277677A (en) | 2016-09-20 | 2016-09-20 | A kind of mud combination treatment method and device |
| CN201720245383.8U Active CN206553370U (en) | 2016-09-20 | 2017-03-14 | A kind of sludge combined treatment device |
| CN201710149847.XA Active CN106830605B (en) | 2016-09-20 | 2017-03-14 | Sludge combined treatment method and device |
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| CN201610834410.5A Pending CN106277677A (en) | 2016-09-20 | 2016-09-20 | A kind of mud combination treatment method and device |
| CN201720245383.8U Active CN206553370U (en) | 2016-09-20 | 2017-03-14 | A kind of sludge combined treatment device |
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| CN108911456B (en) * | 2018-08-07 | 2021-11-05 | 李明泽 | Novel oily sludge treatment method and system |
| CN110407423B (en) * | 2019-07-24 | 2020-06-23 | 湖南省计量检测研究院 | Resource recovery processing device for oily sludge |
| CN112607981B (en) * | 2020-12-10 | 2022-07-08 | 宁波中循环保科技有限公司 | Method and system for recycling waste mineral oil sludge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6168709B1 (en) * | 1998-08-20 | 2001-01-02 | Roger G. Etter | Production and use of a premium fuel grade petroleum coke |
| CN102351389A (en) * | 2011-06-24 | 2012-02-15 | 上海亚同环保实业有限公司 | Greasy filth treatment process |
| CN102408176A (en) * | 2010-09-25 | 2012-04-11 | 中国石油化工股份有限公司 | System and method for treating oil-containing sludge |
| CN103468333A (en) * | 2012-06-06 | 2013-12-25 | 中国石油天然气股份有限公司 | Oily sludge coke water slurry and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5269906A (en) * | 1987-07-27 | 1993-12-14 | Reynolds Victor R | Process for the recovery of oil from waste oil sludges |
| CN102329633B (en) * | 2011-08-31 | 2013-09-18 | 上海优华系统集成技术有限公司 | Energy-saving process of steam mass blowing flow in delayed coking device |
| CN103693824B (en) * | 2012-09-28 | 2015-10-28 | 中国石油天然气股份有限公司 | A kind of degree of depth extraction coking treatment process of oily sludge |
| CN205398415U (en) * | 2016-03-09 | 2016-07-27 | 北京天灏柯润环境科技有限公司 | Sludge treatment device |
-
2016
- 2016-09-20 CN CN201610834410.5A patent/CN106277677A/en active Pending
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2017
- 2017-03-14 CN CN201720245383.8U patent/CN206553370U/en active Active
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6168709B1 (en) * | 1998-08-20 | 2001-01-02 | Roger G. Etter | Production and use of a premium fuel grade petroleum coke |
| CN102408176A (en) * | 2010-09-25 | 2012-04-11 | 中国石油化工股份有限公司 | System and method for treating oil-containing sludge |
| CN102351389A (en) * | 2011-06-24 | 2012-02-15 | 上海亚同环保实业有限公司 | Greasy filth treatment process |
| CN103468333A (en) * | 2012-06-06 | 2013-12-25 | 中国石油天然气股份有限公司 | Oily sludge coke water slurry and preparation method thereof |
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| CN106830605A (en) | 2017-06-13 |
| CN206553370U (en) | 2017-10-13 |
| CN106277677A (en) | 2017-01-04 |
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Denomination of invention: A sludge combination treatment method and device Effective date of registration: 20231124 Granted publication date: 20230530 Pledgee: Bank of Shanghai Limited by Share Ltd. Pudong branch Pledgor: SHANGHAI YOUHUA SYSTEM INTEGRATION TECHNOLOGY Co.,Ltd. Registration number: Y2023310000773 |