CN209512640U - A kind of primary cooler lower section membrane off-line cleaning system - Google Patents
A kind of primary cooler lower section membrane off-line cleaning system Download PDFInfo
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- CN209512640U CN209512640U CN201822016402.7U CN201822016402U CN209512640U CN 209512640 U CN209512640 U CN 209512640U CN 201822016402 U CN201822016402 U CN 201822016402U CN 209512640 U CN209512640 U CN 209512640U
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- lower section
- primary cooler
- cleaning
- pipeline
- ammonium hydroxide
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Abstract
The utility model relates to a kind of primary cooler lower section membrane off-line cleaning systems, including U-shaped water seal, rinse bath, cleaning pump and fluid level control device；Hot ammonia inlet is set on condensate circulation pipeline, and the outlet of cleaning ammonium hydroxide is set on the condensate circulation pipeline between primary cooler lower section and water sealed tank, the tar ammonia pipeline in gas-liquid separator downstream in raw coke oven gas recovery system is connected by cleaning ammonia water pipeline；The hot ammonium hydroxide flow direction after cleaning is cleaned in ammonia water pipeline and is successively arranged U-shaped water seal, rinse bath, cleaning pump and regulating valve, the regulating valve and the liquidometer interlocking composition fluid level control device being set on rinse bath.The utility model is suitable for more primary coolers in parallel, offline primary cooler lower section is constantly rinsed using hot ammonium hydroxide, hot ammonium hydroxide not recycling after cleaning, but the tar ammonia pipeline in gas-liquid separator downstream is drained into outside, it can effectively clear up the impurity such as coal dust, the naphthalene of heat-transfer pipe and the accumulation of primary cooler inner wall.
Description
Technical field
The utility model relates to coke oven gas primary-cooling technical fields more particularly to a kind of primary cooler lower section to clean offline and be
System.
Background technique
During reclaiming clean coke-oven gas, the raw coke oven gas escaped from coke furnace carbonization chamber through tedge first through bridge tube into
Enter gas collecting tube, after gas-liquid separator, raw coke oven gas, which enters primary cooler, to be continued to cool down for raw coke oven gas and tar ammonia mixture.Primary cooler
It is middle that sub-sectional cooling is carried out to raw coke oven gas using industrial circulating water and water at low temperature, generally use upper and lower two-stage structure.It is just cold to strengthen
The heat exchange efficiency of device, the de- naphthalene efficiency for improving primary cooler, upper section are sprayed with tar ammonia emulsion, as shown in Figure 1, just cold
The condensate circulation of device lower section 1 pumps the condensate circulation that 10 send and continuously sprays, and condensate liquid is passed through through the bottom of primary cooler lower section 1
Enter lower section after water sealed tank 8 and condense liquid bath 9, then send through condensate circulation pump 10 to the circulation sprinkling of the top of primary cooler lower section 1；It is more
Remaining condensate liquid is sent by condensate circulation pump 10 to the tar ammonia pipeline 11 in gas-liquid separator downstream.
A large amount of coal dusts, naphthalene and tar vapor are carried in raw coke oven gas after gas-liquid separator, the effect of primary cooler is by waste coal
Gas is cooled to about 22 DEG C from about 82 DEG C, and removes most naphthalene in raw coke oven gas, reduces follow-up equipment resistance, for further recycling
Chemical products provides advantage.The tar vapor of the overwhelming majority is condensed out in gas collecting tube and primary cooler upper section, and primary cooler
Lower section is different from primary cooler upper section, and not having difference in height can not realize that gravity flow updates, and primary cooler lower section temperature is lower, burnt
Oil content is again seldom, causes most of naphthalene in coal gas to be precipitated, easily accumulates, cause on heat-transfer pipe and primary cooler lower section inner wall
Equipment resistance improves, can only be by current technology to reduce the cooling effect of primary cooler and increase the load of system
Compel frequently purging.And the impurity such as naphthalene, coal dust that primary cooler lower section purges out enter in flushing liquor and condensate liquid and are recycled, and make
It obtains the cleaning of primary cooler lower section to be not thorough, short time internal resistance repeats to increase.Although increasing flushing liquor renewal amount has certain effect,
Most of impurity is still brought into the primary cooler lower section of operation, and vicious circle can not effectively solve primary cooler lower section blockage problem.
The Chinese patent of Publication No. CN103589440A discloses that " a kind of hot ammonium hydroxide washes the side of coke oven gas primary-cooling device
Method " proposes and cleans primary cooler lower section using hot ammonia circulation, but there are following limitations for its technical solution: 1) cleaning ammonium hydroxide
Primary cooler lower section condensation liquid bath is had to pass through, it, so just can only be right because lower section condensation liquid bath is the necessaries of primary cooling process
Primary cooler lower section carries out on-line cleaning, or primary cooler is all stopped production and is cleaned, inflexible for use, influences economic benefit；
2) when on-line cleaning, coke-stove gas continues into primary cooler lower section, and a large amount of naphthalenes, the coal dust carried is still accumulating, hot ammonium hydroxide
Cleaning effect is limited.
Summary of the invention
The utility model provides a kind of primary cooler lower section membrane off-line cleaning system, the primary cooler in parallel suitable for more, benefit
Offline primary cooler lower section is constantly rinsed with hot ammonium hydroxide, the hot ammonium hydroxide not recycling after cleaning, but gas-liquid point is drained into outside
Tar ammonia pipeline from device downstream can effectively clear up the impurity such as coal dust, the naphthalene of heat-transfer pipe and the accumulation of primary cooler inner wall.
In order to achieve the above object, the utility model is implemented with the following technical solutions:
A kind of primary cooler lower section membrane off-line cleaning system, the primary cooler are more parallel connections, the top of every primary cooler lower section
If spray equipment, spray equipment connects the condensate outlet of primary cooler lower section bottom by condensate circulation pipeline, along condensate liquid
Flow direction sets gradually water sealed tank, lower section condensation liquid bath and condensate circulation pump on condensate circulation pipeline；It is described offline clear
The system of washing includes U-shaped water seal, rinse bath, cleaning pump and fluid level control device；On the condensate circulation pipeline of spray equipment upstream
If hot ammonia inlet, hot ammonia inlet is connected by hot ammonia inlet pipeline with the hot ammonium hydroxide conveyance conduit of coke-oven plant, hot ammonium hydroxide
Controlled valve is set on inlet duct；The outlet of cleaning ammonium hydroxide is set on condensate circulation pipeline between primary cooler lower section and water sealed tank,
The tar ammonia pipeline in gas-liquid separator downstream in raw coke oven gas recovery system is connected by cleaning ammonia water pipeline；The hot ammonia after cleaning
Water flowing direction, clean ammonia water pipeline on be successively arranged U-shaped water seal, rinse bath, cleaning pump and regulating valve, the regulating valve be set to
Liquidometer interlocking composition fluid level control device on rinse bath.
Compared with prior art, the utility model has the beneficial effects that
1) the hot ammonium hydroxide drawn from coke-oven plant contains tar, and temperature is high, and pressure is big, can effectively clear up the accumulation of primary cooler lower section
The impurity such as coal dust, naphthalene；
2) coal dust and naphthalene washed out enters eventually into tar product, and object without secondary pollution generates, and protects environment；
3) hot ammonium hydroxide directly outer tar ammonia pipeline for draining into gas-liquid separator downstream after the flushing of primary cooler lower section, no
It is recycled, guarantees cleaning effect；
4) scavenging period can be manually set as needed, primary cooler lower section is cleaned thoroughly, primary cooler service efficiency is improved,
Extend the primary cooler service life；
5) it cleans and U-shaped water seal is set in ammonia water pipeline, thoroughly cut off, do not interfere with each other with the primary cooler of online production；
6) the liquidometer interlocking being arranged on regulating valve and rinse bath is adjusted, and is made to keep certain liquid level in rinse bath, be cleaned
Cheng Wuxu manual adjustment realizes automation control, and operating process is easy, quick, saves human cost；
7) hot ammonium hydroxide is cleaned to corresponding primary cooler lower section sprinkling using original lower section condensate circulation sprinkling system,
Structure is simple, easy to operate, and small investment, low energy consumption.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of primary cooler lower section membrane off-line cleaning system described in the utility model.
In figure: 1. primary cooler lower section, 2. 4. rinse bath of hot ammonia inlet 3.U shape water seal, 5. liquidometer, 6. cleaning pump
7. 8. water sealed tank of regulating valve, 9. lower section condenses the tar ammonia that 10. condensate circulation of liquid bath pumps 11. gas-liquid separator downstreams
Pipeline 12. cleans ammonium hydroxide outlet
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing:
As shown in Figure 1, a kind of primary cooler lower section membrane off-line cleaning system described in the utility model, the primary cooler be more simultaneously
Connection, the top of every primary cooler lower section 1 set spray equipment, and spray equipment connects primary cooler lower section 1 by condensate circulation pipeline
The condensate outlet of bottom sets gradually water sealed tank 8, lower section condensate liquid along condensate flow direction on condensate circulation pipeline
Slot 9 and condensate circulation pump 10；The membrane off-line cleaning system includes U-shaped water seal 3, rinse bath 4, cleaning pump 6 and Liquid level dress
It sets；Hot ammonia inlet 2 is set on the condensate circulation pipeline of spray equipment upstream, hot ammonia inlet 2 passes through hot ammonia inlet pipeline
It is connected with the hot ammonium hydroxide conveyance conduit of coke-oven plant, sets controlled valve on hot ammonia inlet pipeline；Primary cooler lower section 1 and water sealed tank 8
Between condensate circulation pipeline on set cleaning ammonium hydroxide outlet 12, pass through cleaning ammonia water pipeline connect raw coke oven gas recovery system in gas
The tar ammonia pipeline 11 in liquid/gas separator downstream；The hot ammonium hydroxide flow direction after cleaning is cleaned in ammonia water pipeline and is successively arranged U-shaped
Water seal 3, rinse bath 4, cleaning pump 6 and regulating valve 7, the regulating valve 7 and the interlocking composition liquid level of liquidometer 5 being set on rinse bath 4
Control device.
A kind of technical process of primary cooler lower section membrane off-line cleaning system is as follows: the primary cooler is more parallel connections, when certain
When the lower section of primary cooler needs to clean, it is first turned off corresponding primary cooler, is at off-line state, then utilizes lower section condensate liquid
Circulation sprinkling system cleans primary cooler lower section 1 with hot ammonium hydroxide to the corresponding sprinkling of primary cooler lower section 1 cleaning；Heat after cleaning
Ammonium hydroxide flows into rinse bath 4 by lower liquid pipe road, then gas-liquid separator downstream will be drained into outside the hot ammonium hydroxide after cleaning by cleaning pump 6
Tar ammonia pipeline 11；It is successively passed through hot ammonium hydroxide into corresponding primary cooler lower section 1, until completing primary cooler lower section 1
Cleaning.
The working principle of primary cooler lower section membrane off-line cleaning system described in the utility model is: tar can dissolve in coal gas
Naphthalene, the hot ammonium hydroxide tar content that coke-oven plant is drawn are typically about 0.5g/L, and temperature is high, pressure is big, and the utility model
Middle hot ammonium hydroxide is not recycled, and impurity will not accumulate, therefore the coal dust and the impurity such as naphthalene that block to primary cooler lower section 1 have well
Elimination effect.Primary cooler lower section 1 uses offline cleaning way, and can set scavenging period according to user demand.
The cleaning ammonia water pipeline setting U-shaped water seal 3 of primary cooler lower section 1 to rinse bath 4 is to avoid cleaning using water-seal principle
When air enter potential danger caused by the primary cooler of online production.
In the utility model, the hot ammonium hydroxide for cleaning to primary cooler lower section 1 does not enter back into offline primary cooler lower section 1 and pushes up
Portion carries out circulation sprinkling, because hot ammonium hydroxide rinses, primary effect specific heat ammonia circulation flushing effect is well very much, and flushing is got off
Coal dust and the impurity such as naphthalene will not be again introduced into primary cooler lower section 1, can ensure that the effect of cleaning in this way.In addition, passing through cleaning
Liquidometer 5 on slot 4 and the interlocking of regulating valve 7 are adjusted, keep the level stability in rinse bath 4, it can be achieved that system is automatic, safety,
Stable operation.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (1)
1. a kind of primary cooler lower section membrane off-line cleaning system, the primary cooler is more parallel connections, is set at the top of every primary cooler lower section
Spray equipment, spray equipment connect the condensate outlet of primary cooler lower section bottom by condensate circulation pipeline, along condensation liquid stream
Direction is moved, water sealed tank, lower section condensation liquid bath and condensate circulation pump are set gradually on condensate circulation pipeline；It is characterized in that,
The membrane off-line cleaning system includes U-shaped water seal, rinse bath, cleaning pump and fluid level control device；The condensate liquid of spray equipment upstream
Hot ammonia inlet, the hot ammonium hydroxide conveyance conduit phase that hot ammonia inlet passes through hot ammonia inlet pipeline and coke-oven plant are set on circulating line
Even, controlled valve is set on hot ammonia inlet pipeline；Cleaning is set on condensate circulation pipeline between primary cooler lower section and water sealed tank
Ammonium hydroxide outlet connects the tar ammonia pipeline in gas-liquid separator downstream in raw coke oven gas recovery system by cleaning ammonia water pipeline；Edge
Hot ammonium hydroxide flow direction after cleaning is cleaned in ammonia water pipeline and is successively arranged U-shaped water seal, rinse bath, cleaning pump and regulating valve, the tune
The liquidometer interlocking composition fluid level control device for saving valve and being set on rinse bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822016402.7U CN209512640U (en) | 2018-12-04 | 2018-12-04 | A kind of primary cooler lower section membrane off-line cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822016402.7U CN209512640U (en) | 2018-12-04 | 2018-12-04 | A kind of primary cooler lower section membrane off-line cleaning system |
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| Publication Number | Publication Date |
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| CN209512640U true CN209512640U (en) | 2019-10-18 |
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| CN201822016402.7U Active CN209512640U (en) | 2018-12-04 | 2018-12-04 | A kind of primary cooler lower section membrane off-line cleaning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405631A (en) * | 2018-12-04 | 2019-03-01 | 中冶焦耐(大连)工程技术有限公司 | A kind of offline cleaning process of primary cooler lower section and system |
-
2018
- 2018-12-04 CN CN201822016402.7U patent/CN209512640U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405631A (en) * | 2018-12-04 | 2019-03-01 | 中冶焦耐(大连)工程技术有限公司 | A kind of offline cleaning process of primary cooler lower section and system |
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