CN201106034Y - Cleaning apparatus for coking process tower and device - Google Patents
Cleaning apparatus for coking process tower and device Download PDFInfo
- Publication number
- CN201106034Y CN201106034Y CNU2007201782336U CN200720178233U CN201106034Y CN 201106034 Y CN201106034 Y CN 201106034Y CN U2007201782336 U CNU2007201782336 U CN U2007201782336U CN 200720178233 U CN200720178233 U CN 200720178233U CN 201106034 Y CN201106034 Y CN 201106034Y
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- crude benzol
- tower
- coking process
- transfer line
- coking
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Abstract
A cleaning device used for towers and apparatus used for coking technique comprises a tower and apparatus used for coking technique and is characterized in that the top of the tower and apparatus is provided with a crude benzol spray pipe which is connected with a crude benzol container through a convey pipe. The cleaning device used for towers and apparatus used for coking technique has simple structure and conducts the cleaning circularly without the disruption of production and the loss arising from the disruption; coking crude benzol generated from the coking crude benzol production process is adopted as the cleaning solution and a closed circulation and the recycle of crude benzol can be obtained with less crude benzol consumption, low cost and no pollution. The whole cleaning device has simple operation, good effect and short time and can clean relative pipes while cleaning the tower and apparatus.
Description
Technical field
The utility model belongs to industrial cleaning technique and apparatus field, the on-line cleaning device of the packing tower that is specifically related to use in the coking process, tray column, final cooling tower, interchanger etc.
Background technology
The pyrogenic technological process of production mainly is that coal generates coke in the environment of high temperature (950-1050 ℃), is recovered in the chemical products that produces in the process of coking simultaneously.The product coke can be used as the fuel of blast-furnace smelting, also can be used for steel casting, non-ferrous metal metallurgy, manufacturing water-gas: be used to make the producer gas of producing synthetic ammonia, also can be used for making calcium carbide.The chemical products that produces in process of coking can extract products such as tar, ammonia, naphthalene, crude benzol, hydrogen sulfide, hydrogenation cyanogen through reclaiming, processing, and obtains pure coke-oven gas.Tower, the device equipment seriously foulings of using in the recovery technology in the coking industry in use for some time such as various packing towers, tray column, final cooling tower and interchanger, this fouling mainly are that coking pitch, tar, naphthalene etc. mix organic substance.Such fouling will cause the working efficiency of tower, device to reduce, and the circulating resistance of coal gas increases, and temperature raises, and can cause the obstruction of tower, device when serious, has a strong impact on the safety in production in workshop.This just need in time clear up and clean the fouling in tower, the device.
Coking process commonly used at present mainly contains three kinds of modes with the cleaning of tower, device, the one, mechanical-physical cleans, soon tower, device equipment are opened, packing tower also needs filler is clawed, with high pressure water washing or artificial mechanism cleaning fouling, this method workload is big, wastes time and energy then, and stoppage time is long, and is big for environment pollution; The second way is a solvent cleaning, promptly adopts organic solvent, washes as diesel oil, polyol ethers, alkane solvent etc., and this method need be stopped work and be carried out, and the cost of cleaning solvent is higher, and the washings contaminative is big.The third mode is the basic solution matting, adopts NaOH, Na
2CO
3, or highly basic such as ten sodium disulfonates, with addition of a small amount of haloalkane, water dilution heated wash, needing to stop work and clean, the time is longer, and equipment is had corrosive nature, cleans waste liquid and is difficult to handle, and environmental pollution is bigger.Just can carry out because the technology singularity of coking industry, above-mentioned three kinds of cleaning ways all need again to stop work, this will inevitably cause great idle cost, and to environment existence pollution in various degree.
The utility model content
The purpose of this utility model provides a kind of simple in structure; can form closed cycle; tower in the coking process, device equipment are not shut down the washing unit of the coking process of on-line cleaning with tower, device; this device effectively utilizes the crude benzol product in the coking process; can realize fast, efficient, safe cleaning; can't cause environmental pollution, having solved needs when existing cleaning way and equipment clean to stop work and environment is caused pollution problems in various degree.
The technical solution adopted in the utility model is as follows:
A kind of coking process comprises that with tower, device washing unit coking process with tower, device, is characterized in that the top of described tower, device is provided with the crude benzol spray line, and the crude benzol spray line connects the crude benzol container by transfer line.
Described coking process is that coking process packing tower, tray column, final cooling tower are or/and interchanger with tower, device.
Connection is provided with the crude benzol transferpump on the transfer line of described connection crude benzol container, is provided with the sprinkling power-driven pump near the transfer line that sprays pipe end, sprays on the transfer line between power-driven pump and spray line the crude benzol water cooler is set.
Described coking process is provided with the crude benzol return line with tower, device bottom, and the other end of affiliated crude benzol return line inserts and forms the wash cycles loop on the transfer line that sprays the power-driven pump inlet end.
Described coking process is provided with the grease vent pipe with the bottom of tower, device, and the other end of grease vent pipe connects the emptying groove.
The transfer line that described crude benzol container connects behind the crude benzol transferpump is a plural transfer line in parallel, and each transfer line is provided with and sprays power-driven pump and crude benzol water cooler, and end is provided with spray line.
Coking crude benzene is that the benzene hydrocarbon in the coke-oven gas is absorbed by washing oil in washing the benzene tower, contains the benzene washing oil at the cooled product that obtains of benzene hydrocarbon process by being steamed after distilling.The coking crude benzene main component is a benzene,toluene,xylene, and the grease in tower, the device is had extremely strong solvency action, and crude benzol has stronger volatility simultaneously, cleans in the equipment of back little residual.
In addition, the crude benzol highly volatile cleans in order to make the crude benzol shape that is in a liquid state, and the temperature of spraying crude benzol should not be controlled too high, and optimal temperature is 25～40 ℃.Can be effectively the temperature of crude benzol scavenging solution be controlled in this scope by on transfer line, adding the crude benzol water cooler.To each tower, when device cleans, can directly the crude benzol in the crude benzol container be sprayed cleaning via tower, device top that crude benzol is pumped to required cleaning, the cleaning temperature of crude benzol water cooler control crude benzol can be set on the transfer line simultaneously, crude benzol is in a liquid state.
In order to recycle and realize the wash cycles of crude benzol, a retrieving arrangement can be set in the bottom of tower, device, crude benzol washing lotion, the water after collect cleaning, contain dirty waste liquid.Because crude benzol is lighter than water, the crude benzol proportion behind the molten dirt increases, and sinks to the bottom of retrieving arrangement, the centre is to clean water layer, and the superiors are that crude benzol cleans liquid layer, can carry out recycle to the crude benzol on upper strata like this, and the molten dirty crude benzol of lower floor can be put into another operation, carries out the extraction of crude benzol.Because crude benzol is volatile, the crude benzol that volatilizes can be absorbed again in next procedure, and therefore the benzene class material in the molten dirty crude benzol waste liquid is steamed and gets back in the coal gas in the ammonia still process process and is absorbed.Therefore with crude benzol final cooling tower not being stopped production to clean neither can exert an influence to gas quality, can the benzene operation of washing of back not exerted an influence again.
Also can be directly directly pick out a crude benzol return line with the bottom of tower, device at coking process, the sprinkling crude benzol of exporting in by the crude benzol container is during to certain consumption, utilize this crude benzol return line to carry out the wash cycles utilization of crude benzol, realize the online wash cycles of not stopping work.
If do not stop work when adopting other solvent cleaning, then partial solvent can be entrained with final cooling tower by coal gas, carries out next procedure together with the unsaturated compound polymerization reaction take place in the circulating washing oil.Make the increase of washing oil molecular-weight average, viscosity increase, absorb the crude benzol ability drop.Simultaneously to clean cost more at most also just big more for the amount of the solvent of being carried secretly by coal gas, and the washing oil mass loss is just big more.The material of the waste liquid intractable of cleaning if this solvent belongs to not volatile then finally can cause the water outlet of Treatment of Coking Effluent workshop section to exceed standard, even can have influence on the activity of the biological bacterium of handling waste water.
This device is when carrying out clean-out operation, because of crude benzol dissolution of scale very easily, if the flow of crude benzol is big, dissolved dirt speed is fast, and the proportion of molten dirty crude benzol waste liquid is little, this waste liquid and water stratification be not obvious easily to cause the crude benzol loss when emptying, thus should by the crude benzol pump and spray the flow of power-driven pump control sprinkling crude benzol should not be too fast.Moreover crude benzol is explosives, inflammable items, should adopt antiknock device when carrying crude benzol in the cleaning, preferably adopts canned-motor pump.
The beneficial effects of the utility model are, this coking process is simple in structure with the washing unit of tower, device, can constitute the online clean cycle that do not stop production, no idle cost, scavenging solution adopts the self-produced coking crude benzene of coking crude benzene workshop section, and can realize the closed cycle of cleaning process and the recovery of crude benzol, and the crude benzol consumption is few, cost is low, and is pollution-free.Whole washing unit is easy and simple to handle, effect is obvious, and the time is short, can be to tower, also associated pipe is cleaned when device cleans.
Description of drawings
The invention will be further elaborated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the final cooling tower cleaning structure figure of the utility model embodiment;
Fig. 2 be in the utility model embodiment final cooling tower with the change in resistance graphic representation of scavenging period;
Fig. 3 be in the utility model embodiment final cooling tower with the gas temperature change curve of scavenging period.
Embodiment
As Fig. 1, this coking process mainly is made up of final cooling tower, crude benzol container 1, crude benzol pump 2, transfer line 3, sprinkling power-driven pump 5 and 5 ', crude benzol water cooler 6 and 6 ', the spray line 8 and 8 ' of band cleaning with tower, device washing unit.This final cooling tower to be cleaned is two sections independently housing structures, its epimere tower body 7 ' and lower end tower body 7 independent operatings, the front end of crude benzol container 1 is provided with crude benzol pump 2, crude benzol pump 2 is communicated with spray line by transfer line 4, the front end of crude benzol pump is connected with the transfer line of two parallel connections, be provided with respectively on two transfer lines and spray power-driven pump 5 and 5 ', crude benzol water cooler 6 and 6 ' and spray line 8 and 8 ', spray line 8 ' is positioned at the top of epimere tower body 7 ', and spray line 8 is positioned at the top of hypomere tower body 7.
The bottom of epimere tower body 7 ' and hypomere tower body 7 is provided with crude benzol return line 4 ' and 4 respectively, the other end of crude benzol return line 4 ' inserts the inlet end that sprays power-driven pump 5 ', constitute the recycle that crude benzol sprays scavenging solution, the other end of crude benzol return line 4 inserts the inlet end that sprays power-driven pump 5, also constitute the recycle that crude benzol sprays scavenging solution, because the fouling of hypomere tower body 7 is more, be provided with waste liquid accumulator tank 9 in the bottom of hypomere tower body 7, be used to reclaim the bigger crude benzol that is positioned at lowermost layer of molten dirt amount and clean waste liquid.The inlet end of crude benzol return line 4 can certainly be linked into the upper end liquid layer of waste liquid accumulator tank 9, the superiors that utilize the interior reusable edible crude benzol of accumulator tank to be positioned at waste liquid carry out utilizing the reflux cycle of crude benzol to use.
This transfer line adopts ￠ 25 weldless steel tubes, and crude benzol pump 2 and sprinkling power-driven pump 5 and 5 ' all adopt canned-motor pump.Make the crude benzol in the crude benzol product vessel 1 retain 2/3 earlier, it is standby to do cleaning.Adjust the liquid level＜1000mm of final cooling tower hypomere tower body 7, go out the high 200～300mm of tower mouth than circulation fluid.The notice master control room is carried out monitoring, after connection is known, opens crude benzol pump 2 and adds crude benzol with sprinkling power-driven pump 5 and 5 ' to final cooling tower hypomere tower body 7 and epimere tower body 7 ' circulation fluid, adds and send crude benzol flow 3m
3/ h.In the cleaning process, control the crude benzol temperature, i.e. the sprinkling crude benzol liquid temp of epimere tower body 7 '＜30 ℃, the crude benzol flushing liquor temperature of hypomere tower body 7＜40 ℃ by control crude benzol water cooler 6,6 ' water at low temperature and quantity of circulating water.The limit is cleaned marginal not meaning observing tower internal resistance and is changed and the liquid effluent variation.When not having dirt in the liquid effluent, forbid effluxing to reduce the crude benzol loss, add crude benzol when resistance has when decline to suspend, and increase the spray cycle amount.When the tower resistance recovers normal, and contain dirt in the exterior liquid when low, stop to clean, recover the final cooling tower normal running.The molten dirty crude benzol that produces in the cleaning process is wanted in time outer and is drained into accumulator tank 9, prevents to run and emits.In the cleaning process, suitably increase and wash benzene tower liquid-gas ratio, improve debenzolizing tower top temperature, reduce crude benzol volatilization loss.
By Fig. 3, Fig. 4 as can be seen, this final cooling tower scavenging period is short, only uses 5 days, simple to operate, the post worker independently finish, and the final cooling tower resistance drops to 1250Pa, reduced the resistance of 1750Pa, gas temperature is reduced to 26 ℃ by 32 ℃, and interchanger heat exchange effect is significantly improved.
Claims (6)
1. a coking process comprises that with tower, device washing unit coking process with tower, device, is characterized in that the top of described tower, device is provided with the crude benzol spray line, and the crude benzol spray line connects the crude benzol container by transfer line.
2. coking process according to claim 1 is characterized in that with tower, device washing unit described coking process is that coking process packing tower, tray column, final cooling tower are or/and interchanger with tower, device.
3. coking process according to claim 1 tower, device washing unit, it is characterized in that connecting on the transfer line of described connection crude benzol container the crude benzol transferpump is set, transfer line near the spray pipe end is provided with the sprinkling power-driven pump, sprays on the transfer line between power-driven pump and spray line the crude benzol water cooler is set.
4. coking process according to claim 1 tower, device washing unit, it is characterized in that described coking process is provided with the crude benzol return line with tower, device bottom, the other end of affiliated crude benzol return line inserts and forms the wash cycles loop on the transfer line that sprays the power-driven pump inlet end.
5. coking process according to claim 1 is characterized in that with tower, device washing unit described coking process is provided with the grease vent pipe with the bottom of tower, device, and the other end of grease vent pipe connects the emptying groove.
6. coking process according to claim 1 tower, device washing unit, it is characterized in that the transfer line behind the described crude benzol container connection crude benzol transferpump is plural transfer line in parallel, each transfer line is provided with and sprays power-driven pump and crude benzol water cooler, and end is provided with spray line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201782336U CN201106034Y (en) | 2007-09-28 | 2007-09-28 | Cleaning apparatus for coking process tower and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201782336U CN201106034Y (en) | 2007-09-28 | 2007-09-28 | Cleaning apparatus for coking process tower and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201106034Y true CN201106034Y (en) | 2008-08-27 |
Family
ID=39957831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201782336U Expired - Fee Related CN201106034Y (en) | 2007-09-28 | 2007-09-28 | Cleaning apparatus for coking process tower and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201106034Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103965930A (en) * | 2014-04-21 | 2014-08-06 | 鞍钢股份有限公司 | Recovery method for cleaned objects of final cooling tower |
| CN105858771A (en) * | 2016-05-25 | 2016-08-17 | 中冶焦耐工程技术有限公司 | Ammonia stilling device cleaning method and system |
| CN111363567A (en) * | 2018-12-26 | 2020-07-03 | 苏州永峰联环保科技有限公司 | Coking indirect cooling tower cleaning process and cleaning device thereof |
| CN112266801A (en) * | 2020-10-31 | 2021-01-26 | 张家港宏昌钢板有限公司 | Final cooling tower cleaned by tar dispersant and cleaning method |
| CN112683103A (en) * | 2020-12-30 | 2021-04-20 | 国家能源集团煤焦化有限责任公司 | Cleaning device for primary cooler cooling pipe, coke oven gas cooling device and coke oven assembly |
-
2007
- 2007-09-28 CN CNU2007201782336U patent/CN201106034Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103965930A (en) * | 2014-04-21 | 2014-08-06 | 鞍钢股份有限公司 | Recovery method for cleaned objects of final cooling tower |
| CN103965930B (en) * | 2014-04-21 | 2017-12-05 | 鞍钢股份有限公司 | A kind of recovery method of final cooling tower cleaning material |
| CN105858771A (en) * | 2016-05-25 | 2016-08-17 | 中冶焦耐工程技术有限公司 | Ammonia stilling device cleaning method and system |
| CN111363567A (en) * | 2018-12-26 | 2020-07-03 | 苏州永峰联环保科技有限公司 | Coking indirect cooling tower cleaning process and cleaning device thereof |
| CN112266801A (en) * | 2020-10-31 | 2021-01-26 | 张家港宏昌钢板有限公司 | Final cooling tower cleaned by tar dispersant and cleaning method |
| CN112683103A (en) * | 2020-12-30 | 2021-04-20 | 国家能源集团煤焦化有限责任公司 | Cleaning device for primary cooler cooling pipe, coke oven gas cooling device and coke oven assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20150928 |
|
| EXPY | Termination of patent right or utility model |