CN110846085A - Cleaning technology and device for electrical tar precipitator - Google Patents
Cleaning technology and device for electrical tar precipitator Download PDFInfo
- Publication number
- CN110846085A CN110846085A CN201911242604.6A CN201911242604A CN110846085A CN 110846085 A CN110846085 A CN 110846085A CN 201911242604 A CN201911242604 A CN 201911242604A CN 110846085 A CN110846085 A CN 110846085A
- Authority
- CN
- China
- Prior art keywords
- tar
- tar precipitator
- rich
- stop valve
- outlet
- 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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Links
- 239000012716 precipitator Substances 0.000 title claims abstract description 60
- 238000004140 cleaning Methods 0.000 title claims abstract description 30
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 60
- 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
- 238000005406 washing Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000001556 precipitation Methods 0.000 claims abstract description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims description 19
- 239000003034 coal gas Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 2
- 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
- 238000002407 reforming Methods 0.000 abstract description 2
- 239000002912 waste gas Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 5
- 238000000746 purification Methods 0.000 description 4
- 239000000571 coke Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 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
Images
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
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- 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 comprises an oil-rich storage tank, a feeding pump and a heater, wherein 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 are removed by utilizing the principle that the oil-rich can dissolve the tar and the dissolving speed is increased along with the temperature rise. The beneficial effects are as follows: 1) the utilization rate of original equipment and pipelines is high, and the investment cost is saved; 2) the plug in the electrical tar precipitator can be dissolved by heating the rich oil (washing oil and crude benzene); 3) no waste gas is generated, rich oil is a final-cooling benzene washing product and is a raw material of a crude benzene working section, the rich oil is still used as a crude benzene raw material after washing, a mixture containing tar and naphthalene is sent into a tar ammonia water separation tank, no raw material investment is generated in the whole washing process, no secondary pollutant is generated, and the environment is protected; 4) simple equipment, easy operation, perfect and reasonable structure, no need of reforming original equipment and pipelines, low cost, less investment and low energy consumption.
Description
Technical Field
The invention relates to a cleaning device in the technical field of coking, in particular to a cleaning technology and a cleaning device of an electric tar precipitator.
Background
The electric tar precipitator is one of important devices in a coke oven gas purification system, and mainly has the functions of removing tar droplets in the coke oven gas and ensuring smooth gas purification. As a part of the captured impurities such as naphthalene, tar and the like are deposited on the precipitation electrode and the corona electrode, and a part of the captured impurities flows into the bottom of the electrical tar precipitator. Although the coal gas is cleaned by the conventional ammonia water, the time is long, the tar layer is accumulated more and more thickly, corona wire breakage or voltage and current fluctuation is caused, the tar removing efficiency is reduced, and the bottom of the electrical tar precipitator is blocked sometimes to influence the smooth gas purification.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a technology and a device for cleaning an electric tar precipitator, a tar layer on a precipitation pole and a corona pole of the electric tar precipitator and tar at the bottom of the electric tar precipitator, so that the treatment effect of the electric tar precipitator is ensured, and the smooth gas purification is ensured.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cleaning device for an electric tar precipitator comprises an oil-rich storage tank, a feeding pump and a heater, and is characterized in that a partition plate is arranged inside the oil-rich storage tank, a mixture outlet stop valve is arranged at the bottom of the left side, an oil-rich 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 an inlet of the feeding pump, an outlet of the feeding pump is connected with an inlet of the heater through a pipeline and a benzene removal working section through the pipeline, an outlet of the heater is connected with a cleaning liquid inlet of the electric tar precipitator, a tar outlet of the electric tar precipitator is connected below the liquid level in a water seal tank through a pipeline, and the upper part.
And a first stop valve is arranged on a pipeline at the benzene removal working section at the outlet of the feeding pump, and a second stop valve is arranged on a pipeline between the outlet of the feeding pump and the heater and close to the heater.
A cleaning technology of an electric tar precipitator is characterized in that the technology utilizes the principle that rich oil can dissolve tar, the dissolving speed is increased along with the temperature rise, tar layers on a precipitation pole and a corona pole of the electric tar precipitator and tar at the bottom of the electric tar precipitator are removed, and the cleaning technology comprises the following steps:
1) when the electrical tar precipitator is cleaned, firstly, a coal gas inlet valve and a coal gas outlet valve of the electrical tar precipitator are closed, and internal coal gas is replaced;
2) closing the first stop valve and the mixture outlet stop valve, opening the second stop valve, enabling rich oil from final-cooling benzene washing to enter the right side of a partition plate of the rich oil storage tank from a rich oil inlet, entering a heater through a feed pump for heating, then entering an electric tar precipitator from a cleaning liquid inlet of the electric tar precipitator, spraying by using an original ammonia water spraying device of the electric tar precipitator to dissolve tar layers on a precipitation pole and a corona pole of the electric tar precipitator and tar at the bottom of the electric tar precipitator, and finally enabling a tar outlet of the electric tar precipitator to flow into the left side of the partition plate of the rich oil storage tank through a water seal tank;
3) when the rich oil on the left side of the rich oil storage tank is higher than the partition plate, the rich oil flows to the right side of the partition plate through the partition plate and flows circularly together with the rich oil from the final cooling benzene washing to be sprayed circularly;
4) after the cleaning is finished, the second stop valve is closed, the first stop valve 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 first stop valve through the feeding pump for regeneration, 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 feeding pump, a heater, a part of pipelines and valves are needed to be added, the utilization rate of original equipment and pipelines is high, and the investment cost is saved;
2) the plug in the electrical tar precipitator can be dissolved by heating the rich oil (washing oil and crude benzene);
3) the cleaning system is a closed system, no waste gas is generated, rich oil is a final-cooling benzene cleaning product and is a raw material of a crude benzene working section, the rich oil is still used as the crude benzene raw material after cleaning, 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 reforming the original equipment and pipeline, low cost, less investment and low energy consumption.
Drawings
FIG. 1 is a schematic diagram of the process structure of the present invention.
In the figure: 1-rich oil storage tank 11-partition plate 12-rich oil inlet 13-mixture outlet stop valve 2-feeding pump 3-heater 4-electric tar precipitator 5-water seal tank 6-stop valve I7-stop valve II
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in figure 1, the cleaning device for the electric tar precipitator comprises an oil-rich storage tank 1, a feeding pump 2 and a heater 3, wherein a partition plate 11 is arranged inside the oil-rich storage tank 1, a mixture outlet stop valve 13 is arranged at the bottom of the left side, an oil-rich 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 an inlet of the feeding pump 2, an outlet of the feeding pump 2 is connected with an inlet of the heater 3 through one path and a benzene removal section through the other path, an outlet of the heater 3 is connected with a cleaning liquid inlet of the electric tar precipitator 4, a tar outlet of the electric tar precipitator 4 is connected below the liquid level in a water-sealed tank 5 through a pipeline, and an upper part of the water.
And a first stop valve 6 is arranged on a pipeline at the benzene removal working section at the outlet of the feed pump 2, and a second stop valve 7 is arranged between the outlet of the feed pump 2 and the heater 3 and on the pipeline close to the heater 3.
A cleaning technology of an electric tar precipitator is characterized in that the technology utilizes the principle that rich oil can dissolve tar layers on a precipitation pole and a corona pole 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 cleaning the electrical tar precipitator, firstly, closing a coal gas inlet valve and a coal gas outlet valve of the electrical tar precipitator 4, and replacing the internal coal gas;
2) closing the first stop valve 6 and the mixture outlet stop valve 13, opening the second stop valve 7, enabling rich oil from the final cooling benzene washing to enter the right side of a partition plate 11 of the rich oil storage tank 1 from a rich oil inlet, entering a heater 3 through a feed pump 2 for heating, then entering the electric tar precipitator 4 from a cleaning liquid inlet of the electric tar precipitator 4, spraying by using an original ammonia water spraying device of the electric tar precipitator 4, dissolving a tar layer on a precipitation pole and a corona pole of the electric tar precipitator 4 and tar at the bottom of the electric tar precipitator 4, and finally enabling a tar outlet of the electric tar precipitator 4 to flow into the left side of the partition plate 11 of the rich oil storage tank 1 through a water seal tank 5;
3) when the rich oil on the left side of the rich oil storage tank 1 is higher than the partition plate 11, the rich oil flows to the right side of the partition plate 11 through the partition plate 11, and circularly flows and is sprayed together with the rich oil from the final cooling benzene washing (when the liquid level in the rich oil storage tank 1 reaches a given height, a valve of the rich oil from the final cooling benzene washing is closed, and the rich oil is stopped being supplemented);
4) after the cleaning is finished, the second stop valve 7 is closed, the first stop valve 6 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 for regeneration through the first stop valve 6 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 (3)
1. A cleaning device for an electric tar precipitator comprises an oil-rich storage tank, a feeding pump and a heater, and is characterized in that a partition plate is arranged inside the oil-rich storage tank, a mixture outlet stop valve is arranged at the bottom of the left side, an oil-rich 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 an inlet of the feeding pump, an outlet of the feeding pump is connected with an inlet of the heater through a pipeline and a benzene removal working section through the pipeline, an outlet of the heater is connected with a cleaning liquid inlet of the electric tar precipitator, a tar outlet of the electric tar precipitator is connected below the liquid level in a water seal tank through a pipeline, and the upper part.
2. The electrical tar precipitator cleaning device according to claim 1, wherein a first stop valve is arranged on a pipeline of the outlet of the feeding pump to the debenzolization section, and a second stop valve is arranged on a pipeline between the outlet of the feeding pump and the heater and near the heater.
3. The technology for cleaning the electrical tar precipitator for realizing the cleaning technology of the electrical tar precipitator in claim 1 is characterized in that the technology utilizes the principle that rich oil can dissolve tar, the dissolution speed is increased along with the temperature rise, and tar layers on a precipitation pole and a corona pole of the electrical tar precipitator and tar at the bottom of the electrical tar precipitator are removed, and the technology comprises the following steps:
1) when the electrical tar precipitator is cleaned, firstly, a coal gas inlet valve and a coal gas outlet valve of the electrical tar precipitator are closed, and internal coal gas is replaced;
2) closing the first stop valve and the mixture outlet stop valve, opening the second stop valve, enabling rich oil from final-cooling benzene washing to enter the right side of a partition plate of the rich oil storage tank from a rich oil inlet, entering a heater through a feed pump for heating, then entering an electric tar precipitator from a cleaning liquid inlet of the electric tar precipitator, spraying by using an original ammonia water spraying device of the electric tar precipitator to dissolve tar layers on a precipitation pole and a corona pole of the electric tar precipitator and tar at the bottom of the electric tar precipitator, and finally enabling a tar outlet of the electric tar precipitator to flow into the left side of the partition plate of the rich oil storage tank through a water seal tank;
3) when the rich oil on the left side of the rich oil storage tank is higher than the partition plate, the rich oil flows to the right side of the partition plate through the partition plate and flows circularly together with the rich oil from the final cooling benzene washing to be sprayed circularly;
4) after the cleaning is finished, the second stop valve is closed, the first stop valve 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 first stop valve through the feeding pump for regeneration, 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 true CN110846085A (en) | 2020-02-28 |
| CN110846085B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058498A (en) * | 2020-08-26 | 2020-12-11 | 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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| 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 |
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| JP2009279496A (en) * | 2008-05-20 | 2009-12-03 | Hitachi Plant Technologies Ltd | Oil mist remover and machining system equipped with the same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058498A (en) * | 2020-08-26 | 2020-12-11 | 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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|---|---|
| CN110846085B (en) | 2024-06-11 |
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