CN204198703U - A kind of coking crude benzene Separation of Water secondary utilization device - Google Patents
A kind of coking crude benzene Separation of Water secondary utilization device Download PDFInfo
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- CN204198703U CN204198703U CN201420562093.2U CN201420562093U CN204198703U CN 204198703 U CN204198703 U CN 204198703U CN 201420562093 U CN201420562093 U CN 201420562093U CN 204198703 U CN204198703 U CN 204198703U
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- water
- separation
- alkali
- benzene
- remained ammonia
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- 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
Abstract
The utility model relates to a kind of coking crude benzene Separation of Water secondary utilization device, utilize Separation of Water that coking crude benzene operation debenzolizing tower distills as raw material, by pipeline, the crude benzol Separation of Water that light benzene control separator is separated is incorporated into final cooling tower as the supplementary water of renewal, supplement trace ammonia still process NaOH(concentration 40% in final cooling tower simultaneously) solution, Separation of Water and NaOH solution is made to be mixed to form basic solution, after whole SAPMAC method, from circulating-pump outlet, unnecessary solution is directly sent into remained ammonia groove, enter ammonia steaming system.Adopt Separation of Water water as a supplement, not only save a large amount of industrial fresh waters, fill into micro-NaOH solution can absorb in and the acid mist carried secretly in coal gas, prevent the anticorrosion of final cooling tower packing support and equipment, part benzene volatilization in simultaneously contacting with coal gas in Separation of Water directly enters coal gas, reach and wash benzene tower, reclaim the part light benzene of Separation of Water, simple to operate, environmental protection and energy saving, investment cost are few and safe and reliable to operation.
Description
Technical field
The utility model relates to a kind of coking crude benzene Separation of Water secondary utilization device, is the device of the Separation of Water second stage employ of a kind of debenzolizing tower distillation after controlling separator specifically, belongs to coke oven gas purification technical field.
Background technology
At present, coke-oven plant is in the process of producing crude benzol or light benzene, and the general steam that adopts takes off benzene method.And when adopting the method, often all can produce a certain amount of Separation of Water, this part crude benzol Separation of Water is about the 0.8-1.2 of light benzene output doubly, coke-oven plant concentrates after adopting collection to send suction gas line, be mixed into the process of ammoniacal liquor system, substantially can not get effective utilization, and a certain amount of volatile benzene contained in Separation of Water, the loss of benzene, while contaminate environment, also bring tremendous influence to the production cost of coke-oven plant, in production practice, people have dropped into a large amount of manpower and materials and have gone to solve problems.As Chinese patent " a kind of water saving, energy-conservation and reduce coke oven gas purification novel process and the device of equipment corrosion ", the patent No.: CN200910248854.This technique and device adopt the whole SAPMAC method liquid in the crude benzol Separation of Water dilution final cooling tower in crude benzol water distilling apparatus, after final cooling tower recycles using unnecessary solution as the complex acid of ammonium sulfate device and spray saturex wash water.This technique adopts the whole SAPMAC method liquid in crude benzol Separation of Water dilution final cooling tower, reduces the concentration of acid in whole SAPMAC method liquid to a certain extent, alleviates whole SAPMAC method liquid because containing the corrosion of acid to whole cooling system, using unnecessary solution as the complex acid of ammonium sulfate device and spray saturex wash water, effectively reduce the consumption that final cooling tower supplements industrial fresh water, but because crude benzol Separation of Water contains the benzene of very high density, the Separation of Water of this part is sent into saturex and uses water as a supplement, because temperature is at about 55 DEG C in saturex flowing full groove, a large amount of light benzenes can be evaporated, contaminate environment, affect the health of worker, and when adopting whizzer blanking, because solution contains benzene, centrifuge separation process also produces a large amount of benzene gas, the personnel safety of serious harm centrifuge operations work.
As can be seen here, existing technical scheme does not thoroughly effectively solve the above-mentioned technical barrier of the long-standing problem industry.
Summary of the invention
In view of the defect that above-mentioned prior art exists, the present invention proposes a kind of coking crude benzene Separation of Water secondary utilization device, utilize the mode of gravity flow that the Separation of Water that light benzene controls separator is incorporated into final cooling tower, Separation of Water is adopted to replace industrial fresh water as final cooling tower make up water, fill into a certain amount of NaOH solution simultaneously, in and acid mist in coal gas, the redundant solution after recycling utilizes whole SAPMAC method pump directly to deliver to remained ammonia groove and processes, and realizes utilization again and the effectively process of Separation of Water.
In order to solve above technical problem, the invention provides a kind of coking crude benzene Separation of Water secondary utilization device, comprise light benzene and control separator, final cooling tower, ammonia still, remained ammonia groove, remained ammonia pump, remained ammonia pipeline, it is characterized in that: also comprise the Separation of Water pipeline that is arranged in parallel and add alkali pipeline, described Separation of Water pipeline comprises alkali lye mixing tank, be separated water pipe, it starts from the water port that light benzene controls separator, the water port that light benzene controls separator is connected with alkali lye mixer entrance through being separated water pipe, alkali lye mixer outlet is connected with final cooling tower hypomere water-in, the described alkali pipeline that adds comprises and adds alkali pump, remained ammonia static mixer, add alkali pipe, it starts from and adds alkali pump, add alkali pump outlet one tunnel one to add alkali pipe and be connected with the import of remained ammonia static mixer, another road adds alkali pipe through another and is connected with the import of alkali lye mixing tank, the whole SAPMAC method flushing liquor outlet of hypomere of described final cooling tower is connected with the import of remained ammonia groove by whole SAPMAC method pump one tunnel, another road is connected with final cooling tower epimere whole SAPMAC method flushing liquor entrance, the outlet of remained ammonia groove is connected with remained ammonia static mixer entrance through remained ammonia pipeline by remained ammonia pump, the outlet of remained ammonia static mixer is connected with ammonia still import.
The technical scheme that the present invention limits further is: aforesaid coking crude benzene Separation of Water secondary utilization device, and one end that the nearly final cooling tower of separation water pipe is connected with alkali lye mixing tank is U-tube road, and is highly 1.5-2.0m.This kind of structure can meet the coal gas requirement in shutoff final cooling tower, ensures coal gas cannot be flowed in separator along Separation of Water pipeline, cause the problem that coal gas is overflowed.
Further, aforesaid coking crude benzene Separation of Water secondary utilization device, connects the alkali pipe that adds adding alkali pump and alkali lye mixing tank and is provided with NaOH solution under meter.Can show by installing NaOH solution under meter and regulate the NaOH solution amount entering final cooling tower, being convenient to the NaOH content controlling cold flushing liquor eventually.
The beneficial effects of the utility model are: the utility model utilizes crude benzol Separation of Water as raw material, for the supplementary water of final cooling tower, supplement by the mode of gravity flow and upgrade the flushing liquor of final cooling tower, realizing operate continuously, save the consumption of industrial fresh water, reduce production cost.The utility model has also allocated micro-NaOH solution into, not only increases the alkalescence of circulation flushing liquor, absorbs to have neutralized to carry out from sulphur ammonium operation the acid mist that coal gas carries secretly, reduces and carrys out from sulphur ammonium operation the sulphuric acid mist content that coal gas carries secretly, prevent the corrosion of equipment.Meanwhile, because unnecessary flushing liquor finally sends into remained ammonia groove, directly send ammonia still process process by remained ammonia pipe, the NaOH in solution is utilized effectively, directly decomposes solid ammonium-salt with remained ammonia to ammonia steaming system.Part light benzene in Separation of Water is volatilized in final cooling tower, is mixed into coal gas, directly to washing benzene operation, has reclaimed part light benzene.The airtight environmental protection of the utility model, solves the problem of light benzene volatilization contaminate environment, improves environment-friendly quality.
The utility model running cost is low, substantially cost is not needed, the last major part of a small amount of NaOH solution filled into enters ammonia steaming system and decomposes solid ammonium-salt, save a large amount of industrial fresh water, calculate according to 1,100,000 tons of coke, generation per hour about 2m3/h Separation of Water, according to industrial fresh water price 2 yuan/ton calculating, reduce expenses in year into: 40.04 ten thousand yuan; Meanwhile, reclaim the light benzene in Separation of Water, light benzene amount is about and is separated 1% of the water yield, light benzene price according to 7000 yuan/ton of calculating, annual benefit is: 122.6 ten thousand yuan.
Accompanying drawing explanation
Fig. 1 is schema of the present utility model.
Embodiment
A kind of coking crude benzene Separation of Water secondary utilization device that the present embodiment provides, as shown in Figure 1, comprises two pipelines be arranged in parallel and is separated water pipe 6, alkali lye subtube and adds alkali pipe 11.Wherein, add alkali pipeline and comprise lye pump 9, this lye pump 9 is connected to remained ammonia mixing tank 2 by adding alkali pipe 11, then inputs to ammonia still 1 via remained ammonia mixing tank 2.Separation of Water pipeline comprises light benzene and controls separator 8, the water port 7 that light benzene controls separator 8 is connected with separation water pipe 6, be separated water pipe and be connected to final cooling tower 4 hypomere, by Separation of Water pipeline, isolated Separation of Water is directly introduced into final cooling tower 4 hypomere, Separation of Water enters final cooling tower 4 by Separation of Water pipeline continuous print.Simultaneously, pipeline before being separated water pipe 6 and entering final cooling tower 4 is U-tube road, and the height in this U-tube road, at 1.5m ~ 2.0m, can meet the coal gas requirement in shutoff final cooling tower, guarantee makes coal gas cannot flow in separator 8 along Separation of Water pipeline, causes the problem that coal gas is overflowed.And alkali lye mixing tank 5 is provided with on one end of the nearly final cooling tower 4 in U-tube road, Separation of Water, by entering alkali lye mixing tank 5 behind U-tube road, enters final cooling tower 4 hypomere after alkali lye mixing tank 5 mixes with the 40%NaOH solution from lye pump 9.
Draw an alkali lye subtube to alkali lye mixing tank 5 adding on alkali pipeline 11, final cooling tower 4 is entered after the 40%NaOH solution of trace mixes with Separation of Water by alkali lye mixing tank 5, whole SAPMAC method flushing liquor is made to keep alkalescence, 1 ‰ are not more than containing NaOH concentration in controlled circulation flushing liquor, be convenient to and the acid mist in coal gas, ensure that final cooling tower 4 body and packing support not by the acid gas corrosion come from sulphur ammonium operation, extension device work-ing life.Meanwhile, on alkali lye is in charge of, be also provided with NaOH solution under meter 10, regulated the NaOH solution amount entering final cooling tower 4 by flow indication, be convenient to the NaOH content controlling cold flushing liquor eventually.
Final cooling tower 4 is connected to whole SAPMAC method pump 12 by pipeline, excess basic flushing liquor (NaOH concentration≤1 ‰) by after whole SAPMAC method pump 12 circulates) water-in of remained ammonia groove 14 is introduced by the water outlet of whole SAPMAC method pump 12, mix with remained ammonia, weaken the alkalescence of flushing liquor, after mixing, in ammoniacal liquor, content is less than 0.1 ‰, remained ammonia groove 14 is connected with remained ammonia pump 13, remained ammonia pump 13 is connected to remained ammonia mixing tank 2 by remained ammonia pipe again, inputs to ammonia still 1 process via remained ammonia mixing tank 2.Ensure that in flushing liquor, NaOH is utilized effectively.Utilize remained ammonia groove 14 capacity large simultaneously, the feature that regulating power is strong, after flushing liquor enters remained ammonia groove 14, flushing liquor is diluted, alkalescence significantly weakens, after mixing, remained ammonia NaOH content is less than 0.1 ‰, is only and enters 1/10 of ammonia still 1 remained ammonia NaOH content, be not enough to the operation affecting ammonia still process, therefore ammonia steaming system can not be caused chaotic, affect the water quality of waste water.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (4)
1. a coking crude benzene Separation of Water secondary utilization device, comprise light benzene and control separator, final cooling tower, ammonia still, remained ammonia groove, remained ammonia pump, remained ammonia pipeline, it is characterized in that: also comprise the Separation of Water pipeline that is arranged in parallel and add alkali pipeline, described Separation of Water pipeline comprises alkali lye mixing tank, is separated water pipe, and it starts from the water port that light benzene controls separator, the water port that light benzene controls separator is connected with alkali lye mixer entrance through being separated water pipe, and alkali lye mixer outlet is connected with final cooling tower hypomere water-in, the described alkali pipeline that adds comprises and adds alkali pump, remained ammonia static mixer, add alkali pipe, it starts from and adds alkali pump, add alkali pump outlet one tunnel one to add alkali pipe and be connected with the import of remained ammonia static mixer, another road adds alkali pipe through another and is connected with the import of alkali lye mixing tank, the whole SAPMAC method flushing liquor outlet of hypomere of described final cooling tower is connected with the import of remained ammonia groove by whole SAPMAC method pump one tunnel, another road is connected with final cooling tower epimere whole SAPMAC method flushing liquor entrance, the outlet of remained ammonia groove is connected with remained ammonia static mixer entrance through remained ammonia pipeline by remained ammonia pump, the outlet of remained ammonia static mixer is connected with ammonia still import.
2. coking crude benzene Separation of Water secondary utilization device according to claim 1, is characterized in that: one end that the nearly final cooling tower of described separation water pipe is connected with alkali lye mixing tank is U-tube road.
3. coking crude benzene Separation of Water secondary utilization device according to claim 2, is characterized in that: described U-tube road, is highly 1.5-2.0m.
4. coking crude benzene Separation of Water secondary utilization device according to claim 1, is characterized in that: the alkali pipe that adds that described connection adds alkali pump and alkali lye mixing tank is provided with NaOH solution under meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420562093.2U CN204198703U (en) | 2014-09-26 | 2014-09-26 | A kind of coking crude benzene Separation of Water secondary utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420562093.2U CN204198703U (en) | 2014-09-26 | 2014-09-26 | A kind of coking crude benzene Separation of Water secondary utilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204198703U true CN204198703U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420562093.2U Withdrawn - After Issue CN204198703U (en) | 2014-09-26 | 2014-09-26 | A kind of coking crude benzene Separation of Water secondary utilization device |
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| CN (1) | CN204198703U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104232172A (en) * | 2014-09-26 | 2014-12-24 | 南京钢铁股份有限公司 | Device and process for secondarily utilizing coked crude benzene separation water |
| CN109111959A (en) * | 2018-10-23 | 2019-01-01 | 马鞍山钢铁股份有限公司 | A kind of coal oven dithio-gas ammonium hydroxide cooling system |
-
2014
- 2014-09-26 CN CN201420562093.2U patent/CN204198703U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104232172A (en) * | 2014-09-26 | 2014-12-24 | 南京钢铁股份有限公司 | Device and process for secondarily utilizing coked crude benzene separation water |
| CN109111959A (en) * | 2018-10-23 | 2019-01-01 | 马鞍山钢铁股份有限公司 | A kind of coal oven dithio-gas ammonium hydroxide cooling system |
| CN109111959B (en) * | 2018-10-23 | 2024-05-03 | 马鞍山钢铁股份有限公司 | Coke oven raw gas ammonia water cooling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150311 Effective date of abandoning: 20170728 |
|
| AV01 | Patent right actively abandoned |