CN110846085B - Method and device for cleaning electric tar precipitator - Google Patents
Method and device for cleaning electric tar precipitator Download PDFInfo
- Publication number
- CN110846085B CN110846085B CN201911242604.6A CN201911242604A CN110846085B CN 110846085 B CN110846085 B CN 110846085B CN 201911242604 A CN201911242604 A CN 201911242604A CN 110846085 B CN110846085 B CN 110846085B
- Authority
- CN
- China
- Prior art keywords
- tar
- rich
- stop valve
- tar precipitator
- electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000012716 precipitator Substances 0.000 title claims abstract description 55
- 238000004140 cleaning Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000000203 mixture Substances 0.000 claims abstract description 21
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims abstract description 18
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 9
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000001556 precipitation Methods 0.000 claims abstract description 9
- 238000005406 washing Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000004090 dissolution Methods 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 9
- 239000000571 coke Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/028—Dust removal by electrostatic precipitation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Electrostatic Separation (AREA)
- Industrial Gases (AREA)
Abstract
The invention relates to a cleaning technology and a device of an electric tar precipitator, which comprise an oil-rich storage tank, a feed pump and a heater, and utilize the principle that the oil-rich can dissolve tar and the dissolution speed is increased along with the temperature rise to remove tar layers on a precipitation electrode and a corona electrode of the electric tar precipitator and tar at the bottom of the electric tar precipitator. The beneficial effects are as follows: 1) The utilization rate of the original equipment and the pipeline is high, so that the investment cost is saved; 2) Heating the rich oil (wash oil and crude benzene) may dissolve plugs in the electrical tar precipitator; 3) The rich oil is a final cooling benzene washing product and is a raw material of a crude benzene working section, the cleaned rich oil is still used as a crude benzene raw material, a mixture containing tar and naphthalene is sent into a tar ammonia water separation tank, the whole cleaning process has no raw material investment, no secondary pollutant is generated, and the environment is protected; 4) The device is simple, the operation is easy, the structure is perfect and reasonable, the original device and pipeline do not need to be modified, the cost is reduced, the investment is low, and the energy consumption is low.
Description
Technical Field
The invention relates to cleaning equipment in the technical field of coking, in particular to an electric tar precipitator cleaning technology and a device.
Background
The electric tar precipitator is one of important equipment in a coke oven gas purifying system, and has the main function of removing tar mist drops in the coke oven gas and ensuring the smooth proceeding of gas purification. As a part of the impurities such as naphthalene, tar and the like which are captured are deposited on the precipitation electrode and the corona electrode, a part of the impurities flow into the bottom of the electric tar precipitator. Although the coke is cleaned by conventional ammonia water, the coke layer is accumulated and thicker, so that corona wire breakage or voltage and current fluctuation is caused, the tar removal efficiency is reduced, and the bottom of the electric tar precipitator is sometimes blocked, so that the smooth coal gas purification is affected.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention solves the technical problem of providing the cleaning technology and the device for the electric tar precipitator, which can clean the tar layer on the precipitation electrode and the corona electrode of the electric tar precipitator and the tar at the bottom of the electric tar precipitator, ensure the treatment effect of the electric tar precipitator and ensure the smooth proceeding of gas purification.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
The utility model provides an electric tar precipitator belt cleaning device, includes rich oil storage tank, charge pump and heater, its characterized in that, rich oil storage tank is inside to be equipped with the baffle, and the left side bottom is equipped with the mixture export stop valve, and the upper portion on right side is equipped with rich oil entry, and the lower part on right side is equipped with export and charge pump entry linkage, and the charge pump is through pipeline all the way with heater entry connection, all the way debenzolization workshop section, heater export and electric tar precipitator's washing liquid entry linkage, and electric tar precipitator's tar export is below the liquid level in the water seal groove through the pipeline access, and the upper portion of water seal groove is below the liquid level in the rich oil storage tank through the pipeline access.
And a first stop valve is arranged on a pipeline of the feeding pump outlet debenzolization section, and a second stop valve is arranged on a pipeline between the feeding pump outlet and the heater and close to the heater.
The technology is characterized in that the technology utilizes the principle that rich oil can dissolve tar and the dissolution speed is increased along with the temperature rise to remove tar layers on a precipitation electrode and a corona electrode of the electric tar precipitator and tar at the bottom of the electric tar precipitator, and comprises the following steps:
1) When the electric tar precipitator is cleaned, firstly, a gas inlet valve and an outlet valve of the electric tar precipitator are closed, and internal gas is replaced;
2) Closing a stop valve I and a mixture outlet stop valve, opening a stop valve II, enabling rich oil from final cooling benzene to enter the right side of a rich oil storage tank baffle plate from a rich oil inlet, heating by a feed pump, enabling the rich oil to enter an electric tar precipitator from a cleaning fluid inlet of the electric tar precipitator, spraying by an original ammonia water spraying device of the electric tar precipitator, dissolving a tar layer on a precipitation electrode and a corona electrode of the electric tar precipitator and tar at the bottom of the electric tar precipitator, and enabling the tar from a tar outlet of the electric tar precipitator to flow into the left side of the rich oil storage tank baffle plate through a water seal tank;
3) When the oil rich on the left side of the oil rich storage tank is higher than the partition board, the oil rich flows to the right side of the partition board through the partition board, and flows in a circulating way together with the oil rich from the final cooling benzene washing, and is sprayed in a circulating way;
4) After the cleaning is finished, the stop valve II is closed, the stop valve I and the mixture outlet stop valve are opened, part of the mixture containing tar and naphthalene in the rich oil storage tank enters the regenerator through the stop valve I through the feed pump to be regenerated, and part of the mixture containing tar and naphthalene is sent into the tar ammonia water separation tank through the mixture outlet stop valve.
Compared with the prior art, the invention has the beneficial effects that:
1) Only one rich oil storage tank, one feed pump, a heater, partial pipelines and valves are needed to be additionally arranged, the utilization rate of original equipment and pipelines is high, and the investment cost is saved;
2) Heating the rich oil (wash oil and crude benzene) may dissolve plugs in the electrical tar precipitator;
3) The cleaning system is a closed system, no waste gas is generated, rich oil is a final cooling benzene washing product, meanwhile, the rich oil is a raw material of a crude benzene working section, the cleaned rich oil is still used as a crude benzene raw material, a mixture containing tar and naphthalene is sent into a tar ammonia water separation tank, no raw material investment is generated in the whole cleaning process, no secondary pollutant is generated, and the environment is protected;
4) The invention has the advantages of simple equipment, easy operation, perfect and reasonable structure, no need of modifying the original equipment and pipelines, low cost, low investment and low energy consumption.
Drawings
Fig. 1 is a schematic diagram of the principle of the process structure of the invention.
In the figure: 1-rich oil storage tank 11-partition plate 12-rich oil inlet 13-mixture outlet stop valve 2-feed pump 3-heater 4-electric tar precipitator 5-water seal tank 6-stop valve I7-stop valve II
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
The invention relates to an electric tar precipitator cleaning device, which is shown in fig. 1, and comprises a rich oil storage tank 1, a feed pump 2 and a heater 3, wherein a partition plate 11 is arranged in the rich oil storage tank 1, a mixture outlet stop valve 13 is arranged at the bottom of the left side, a rich oil inlet 12 is arranged at the upper part of the right side, an outlet is arranged at the lower part of the right side and is connected with the inlet of the feed pump 2, the outlet of the feed pump 2 is connected with the inlet of the heater 3 through one path of a pipeline, the outlet of the heater 3 is connected with the cleaning liquid inlet of the electric tar precipitator 4, the tar outlet of the electric tar precipitator 4 is connected below the liquid level in a water seal tank 5 through the pipeline, and the upper part of the water seal tank 5 is connected below the liquid level in the rich oil storage tank 1 through the pipeline.
A first stop valve 6 is arranged on a pipeline of the debenzolization section at the outlet of the feed pump 2, and a second stop valve 7 is arranged on the pipeline between the outlet of the feed pump 2 and the heater 3 and close to the heater 3.
The technology is characterized in that the technology utilizes the principle that rich oil can dissolve a tar layer on a precipitation electrode and a corona electrode of the electric tar precipitator and tar at the bottom of the electric tar precipitator, and the dissolution speed is increased along with the temperature rise, and comprises the following steps:
1) When the electric tar precipitator is cleaned, firstly, the gas inlet valve and the gas outlet valve of the electric tar precipitator 4 are closed, and the internal gas is replaced;
2) Closing a stop valve I6 and a mixture outlet stop valve 13, opening a stop valve II 7, enabling rich oil from final cooling benzene washing to enter the right side of a separator 11 of a rich oil storage tank 1 from a rich oil inlet, heating by a feed pump 2, entering the electric tar precipitator 4 from a cleaning fluid inlet of the electric tar precipitator 4, spraying by an original ammonia water spraying device of the electric tar precipitator 4, dissolving a tar layer on a precipitation electrode and a corona electrode of the electric tar precipitator 4 and tar at the bottom of the electric tar precipitator 4, and finally enabling tar from a tar outlet of the electric tar precipitator 4 to flow into the left side of the separator 11 of the rich oil storage tank 1 through a water seal groove 5;
3) When the oil rich on the left side of the oil rich storage tank 1 is higher than the partition plate 11, the oil rich flows to the right side of the partition plate 11 through the partition plate 11, and flows circularly and sprays circularly together with the oil rich from the final cooling benzene washing (when the liquid level in the oil rich storage tank 1 reaches a given height, a valve for the oil rich from the final cooling benzene washing is closed, and the oil rich is stopped to be supplemented);
4) After the cleaning is finished, the stop valve II 7 is closed, the stop valve I6 and the mixture outlet stop valve 13 are opened, part of the mixture containing tar and naphthalene in the rich oil storage tank 1 enters the regenerator through the stop valve I6 to be regenerated through the feed pump 2, and part of the mixture containing tar and naphthalene is sent into the tar ammonia water separation tank through the mixture outlet stop valve 13.
Claims (1)
1. The cleaning device of the electric tar precipitator comprises a rich oil storage tank, a feed pump and a heater, and is characterized in that a partition plate is arranged in the rich oil storage tank, a mixture outlet stop valve is arranged at the bottom of the left side, a rich oil inlet is arranged at the upper part of the right side, an outlet is arranged at the lower part of the right side and is connected with the inlet of the feed pump, the feed pump is connected with the inlet of the heater through one path of a pipeline, the outlet of the heater is connected with the inlet of a cleaning liquid of the electric tar precipitator, the outlet of tar of the electric tar precipitator is connected below the liquid level in a water seal tank through the pipeline, and the upper part of the water seal tank is connected below the liquid level in the rich oil storage tank through the pipeline; a first stop valve is arranged on a pipeline of the feeding pump outlet debenzolization section, and a second stop valve is arranged on a pipeline between the feeding pump outlet and the heater and close to the heater;
the cleaning method of the cleaning device is to remove tar layers on a precipitation electrode and a corona electrode of the electric tar precipitator and tar at the bottom of the electric tar precipitator by utilizing the principle that rich oil can dissolve tar and the dissolution speed is increased along with the temperature rise, and comprises the following steps:
1) When the electric tar precipitator is cleaned, firstly, a gas inlet valve and an outlet valve of the electric tar precipitator are closed, and internal gas is replaced;
2) Closing a stop valve I and a mixture outlet stop valve, opening a stop valve II, enabling rich oil from final cooling benzene to enter the right side of a rich oil storage tank baffle plate from a rich oil inlet, heating by a feed pump, enabling the rich oil to enter an electric tar precipitator from a cleaning fluid inlet of the electric tar precipitator, spraying by an original ammonia water spraying device of the electric tar precipitator, dissolving a tar layer on a precipitation electrode and a corona electrode of the electric tar precipitator and tar at the bottom of the electric tar precipitator, and enabling the tar from a tar outlet of the electric tar precipitator to flow into the left side of the rich oil storage tank baffle plate through a water seal tank;
3) When the oil rich on the left side of the oil rich storage tank is higher than the partition board, the oil rich flows to the right side of the partition board through the partition board, and flows in a circulating way together with the oil rich from the final cooling benzene washing, and is sprayed in a circulating way;
4) After the cleaning is finished, the stop valve II is closed, the stop valve I and the mixture outlet stop valve are opened, part of the mixture containing tar and naphthalene in the rich oil storage tank enters the regenerator through the stop valve I through the feed pump to be regenerated, and part of the mixture containing tar and naphthalene is sent into the tar ammonia water separation tank through the mixture outlet stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242604.6A CN110846085B (en) | 2019-12-06 | 2019-12-06 | Method and device for cleaning electric tar precipitator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242604.6A CN110846085B (en) | 2019-12-06 | 2019-12-06 | Method and device for cleaning electric tar precipitator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110846085A CN110846085A (en) | 2020-02-28 |
| CN110846085B true CN110846085B (en) | 2024-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911242604.6A Active CN110846085B (en) | 2019-12-06 | 2019-12-06 | Method and device for cleaning electric tar precipitator |
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| Country | Link |
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| CN (1) | CN110846085B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058498B (en) * | 2020-08-26 | 2022-11-22 | 包头钢铁（集团）有限责任公司 | Fault processing method for coal gas purification electric tar precipitator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1057835A (en) * | 1996-08-14 | 1998-03-03 | San Techno Kk | Collecting device for oily fume |
| KR20040024076A (en) * | 2002-09-13 | 2004-03-20 | 주식회사 포스코 | An apparatus for cleaning a electric dust collector |
| JP2008156380A (en) * | 2006-12-20 | 2008-07-10 | Jfe Chemical Corp | Method for cleaning regularly stacked packed tower |
| CN101302447A (en) * | 2008-05-14 | 2008-11-12 | 莱芜市泰山焦化有限公司 | Method for changing benzol scrubber to scrub oil when resistance rises in winter |
| JP2009279496A (en) * | 2008-05-20 | 2009-12-03 | Hitachi Plant Technologies Ltd | Oil mist remover and machining system equipped with the same |
| CN103305239A (en) * | 2013-06-20 | 2013-09-18 | 内蒙古包钢钢联股份有限公司 | Method for online cleaning coke oven gas pipeline |
| CN205436025U (en) * | 2015-12-21 | 2016-08-10 | 上海梅山钢铁股份有限公司 | Electrical tar precipitator self - cleaning device |
| CN206440179U (en) * | 2016-12-28 | 2017-08-25 | 山东潍焦集团薛城能源有限公司 | A kind of primary cooler tar light oil flusher |
| CN211420077U (en) * | 2019-12-06 | 2020-09-04 | 中冶焦耐(大连)工程技术有限公司 | Cleaning device for electrical tar precipitator |
-
2019
- 2019-12-06 CN CN201911242604.6A patent/CN110846085B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1057835A (en) * | 1996-08-14 | 1998-03-03 | San Techno Kk | Collecting device for oily fume |
| KR20040024076A (en) * | 2002-09-13 | 2004-03-20 | 주식회사 포스코 | An apparatus for cleaning a electric dust collector |
| JP2008156380A (en) * | 2006-12-20 | 2008-07-10 | Jfe Chemical Corp | Method for cleaning regularly stacked packed tower |
| CN101302447A (en) * | 2008-05-14 | 2008-11-12 | 莱芜市泰山焦化有限公司 | Method for changing benzol scrubber to scrub oil when resistance rises in winter |
| JP2009279496A (en) * | 2008-05-20 | 2009-12-03 | Hitachi Plant Technologies Ltd | Oil mist remover and machining system equipped with the same |
| CN103305239A (en) * | 2013-06-20 | 2013-09-18 | 内蒙古包钢钢联股份有限公司 | Method for online cleaning coke oven gas pipeline |
| CN205436025U (en) * | 2015-12-21 | 2016-08-10 | 上海梅山钢铁股份有限公司 | Electrical tar precipitator self - cleaning device |
| CN206440179U (en) * | 2016-12-28 | 2017-08-25 | 山东潍焦集团薛城能源有限公司 | A kind of primary cooler tar light oil flusher |
| CN211420077U (en) * | 2019-12-06 | 2020-09-04 | 中冶焦耐(大连)工程技术有限公司 | Cleaning device for electrical tar precipitator |
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| CN110846085A (en) | 2020-02-28 |
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