CN215049429U - A waste water degradation device of recycling for producing coke - Google Patents
A waste water degradation device of recycling for producing coke Download PDFInfo
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- CN215049429U CN215049429U CN202120699584.1U CN202120699584U CN215049429U CN 215049429 U CN215049429 U CN 215049429U CN 202120699584 U CN202120699584 U CN 202120699584U CN 215049429 U CN215049429 U CN 215049429U
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Abstract
The utility model discloses a waste water degradation device of recycling for producing coke, including coke oven, wastewater disposal basin, cold drum electricity catch device and ammonia still, coke oven waste water output end is connected with first transfer chain and second transfer chain through the delivery pump, the wastewater disposal basin is connected to an evaporation tower through the delivery pump, and an evaporation tower output is connected to the secondary evaporation tower. This a waste water degradation recycles device for producing coke handles coke oven waste water respectively through setting up first transfer chain and second transfer chain, through first transfer chain, primary evaporation tower and secondary evaporation tower effective treatment coking waste water, effectively realizes effectively drawing of resource and utilizing in the waste water through the second transfer chain, and this a waste water degradation recycles device for producing coke's waste water treatment mode is diversified, and waste water utilization rate is high, possesses economic benefits.
Description
The technical field is as follows:
the utility model relates to a coke production technical field specifically is a waste water degradation recycles device for producing coke.
Background art:
the coke oven wastewater refers to wastewater generated in the processes of coking, gas purification, chemical product recovery and chemical product refining, and belongs to high-concentration organic wastewater which is toxic, harmful and difficult to degrade. According to the estimation that 0.5 ton of wastewater is generated per 1 ton of coke produced on average, 2.25 million tons of coking wastewater are generated in the coking industry of China every year, and are utilized in wet quenching or blast furnace converter slag treatment after pretreatment such as ammonia evaporation and biochemical treatment, or further deeply treated to be used as make-up water of circulating water, and finally all the wastewater is discharged into the atmosphere in a water vapor mode. The coking wastewater is mainly derived from moisture in coking coal and is generated in the processes of coal gas cooling and purification, wherein the coal gas overflows along with coal gas in the high-temperature dry distillation process. The coking wastewater mainly comprises the following types of (1) desulfurization waste liquid: waste water generated in the desulfurization process of coke oven gas, (2) residual ammonia water: after the crude gas of the coke oven bridge pipe is sprayed, washed and cooled by ammonia water circulation, the condensate of the crude gas of the coke oven after tar residue and tar are separated, which is the most main part of coking wastewater and is also the most difficult-to-treat wastewater in the world with extremely complex components and dozens of pollution components, (3) other coking wastewater: chemical production wastewater, circulating cooling system sewage, dust removal wastewater, domestic wastewater and the like.
The desulfurization waste liquid generated by desulfurization of the coke oven gas by the HPF method contains ammonium thiocyanate, ammonium thiosulfate and other secondary salts, and the ammonium thiocyanate has high toxicity to microorganisms and cannot be treated by a conventional biochemical process, so that the waste liquid is sent to a coking coal yard and sprayed with coking coal, the sensory stimulation is strong, large secondary pollution is formed, and the storage, transportation and operation environment is directly influenced; a large amount of frozen blocks are caused in winter, the treatment is difficult, and the feeding is influenced; the secondary salt in the waste liquid is decomposed and converted into sulfur-containing substances in coal gas and coke in the coke oven, so that the product quality is influenced, the load of the processes such as desulfurization and the like is increased, the investment for extracting the crude salt by adopting a salt extraction process is less, but the crude salt has no market, so that the waste liquid becomes new solid waste, and the purified salt can solve the problems of the sale and the cost of pure salt, and is a method worthy of being adopted. But coke waste water treatment among the prior art mode is comparatively single, and in the in-process of realizing waste water normal treatment, how to remove dust, desulfurization, denitration and water conservation utilize and become the problem that needs the solution at present urgently, to prior art's not enough, the waste water degradation recycle device who is used for producing coke of existing design.
The utility model has the following contents:
an object of the utility model is to provide a waste water degradation recycles device for producing coke to propose the problem that current coke waste water treatment mode is comparatively single, have the defect in solving above-mentioned background art.
The utility model discloses by following technical scheme implement: the utility model provides a waste water degradation recycles device for producing coke, includes coke oven, wastewater disposal basin, cold drum electrical catching device and ammonia still, coke oven waste water output end is connected with first transfer chain and second transfer chain through the delivery pump, the wastewater disposal basin is connected to a vaporization tower through the delivery pump, and a vaporization tower output is connected to the secondary evaporation tower, and the output of secondary evaporation tower is connected to circumferential weld venturi tube and sludge treatment system, and circumferential weld venturi tube output is connected to compound dehydrator and sludge treatment system, and compound dehydrator output is connected to sludge treatment system, the aqueous ammonia output of cold drum electrical catching device is connected with third transfer chain and fourth transfer chain through the delivery pump, ammonia still is connected to thiamine treatment tower and desulfurizing tower, thiamine treatment tower is connected to the benzene washing tower, the benzene washing tower is connected to the benzene removal tower.
Preferably, the first transfer line is connected to a waste water pond.
Preferably, the second conveying line is connected to a cold drum electric catching device.
Preferably, the third transfer line is connected to an ammonia still.
Preferably, the fourth transfer line is connected to a quenching tower.
The utility model has the advantages that: this a waste water degradation recycles device for producing coke handles coke oven waste water respectively through setting up first transfer chain and second transfer chain, through first transfer chain, primary evaporation tower and secondary evaporation tower effective treatment coking waste water, effectively realizes effectively drawing of resource and utilizing in the waste water through the second transfer chain, and this a waste water degradation recycles device for producing coke's waste water treatment mode is diversified, and waste water utilization rate is high, possesses economic benefits.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the process of the wastewater degradation recycling device for producing coke according to the present invention.
In the figure: 1. coke oven, 2, wastewater disposal basin, 3, first transfer line, 4, second transfer line, 5, primary evaporation tower, 6, secondary evaporation tower, 7, compound dehydrator, 8, sludge treatment system, 9, cold drum electric catching device, 10, third transfer line, 11, fourth transfer line, 12, ammonia still, 13, ammonium sulfate treatment tower, 14, desulfurizing tower, 15, benzene washing tower, 16, benzene removing tower, 17, coke quenching tower, 18, circular seam venturi tube.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a waste water degradation recycling device for producing coke comprises a coke oven 1, a wastewater pool 2, a primary evaporation tower 5, a secondary evaporation tower 6, a compound dehydrator 7, a sludge treatment system 8, a cold drum electric catching device 9, an ammonia evaporating tower 12, a thiamine treatment tower 13, a desulfurizing tower 14, a benzene washing tower 15, a benzene removing tower 16, a coke quenching tower 17 and a circumferential seam venturi tube 18, wherein the waste water output end of the coke oven 1 is connected with a first conveying line 3 and a second conveying line 4 through a conveying pump, the first conveying line 3 is connected to the wastewater pool 2, the second conveying line 4 is connected to the cold drum electric catching device 9, the waste water can be treated in a diversified manner through the first conveying line 3 and the second conveying line 4, the selectivity is high, the wastewater pool 2 is connected to the primary evaporation tower 5 through the conveying pump, the output end of the primary evaporation tower 5 is connected to the secondary evaporation tower 6, the output end of the secondary evaporation tower 6 is connected to the circumferential seam venturi tube 18 and the sludge treatment system 8, the output end of a circular seam venturi 18 is connected to a compound dehydrator 7 and a sludge treatment system 8, the output end of the compound dehydrator 7 is connected to the sludge treatment system 8, residual organic and harmful components without pyrolysis and thermal oxidation can be washed and absorbed in circulating drainage through secondary evaporation washing of a primary evaporation tower 5 and a secondary evaporation tower 6 and washing through the circular seam venturi 18, pollutants are ensured not to be transferred to the atmosphere and also not to be transferred to a subsequent gas system through large-water-volume dilution and neutralization absorption of circulating water, the ammonia water output end of a cold drum electric catching device 9 is connected with a third conveying line 10 and a fourth conveying line 11 through a conveying pump, the third conveying line 10 is connected to an ammonia still 12, the residual ammonia water can be conveyed into the ammonia still 12 through the third conveying line 10 for treatment, so that resource recovery treatment is realized, the fourth conveying line 11 is connected to a coke quenching tower 17, the residual ammonia water can be conveyed into the coke quenching tower 17 through the fourth conveying line 11, effectively realize the recycle of aqueous ammonia, save the aqueous ammonia raw materials and use, ammonia still 12 is connected to thiamine treating column 13 and desulfurizing tower 14, and thiamine treating column 13 is connected to benzene scrubber 15, and benzene scrubber 15 is connected to debenzolization tower 16.
The working principle is as follows: when the device for degrading and recycling the waste water for producing coke is used, when the waste water generated by the coke oven 1 is conveyed into the first conveying line 3, the waste water is conveyed into the waste water tank 2 through the first conveying line 3, so that the coking waste water is evaporated into dry steam after the waste water in the waste water tank 2 is continuously treated by the primary evaporation tower 5 and the secondary evaporation 6, dust in the smoke contains a certain amount of alkaline components such as quicklime powder and the like, acid components in the coking waste water can be neutralized and rapidly sprayed and dried to form salt, the salt is removed along with coarse dry ash, harmful components such as organic components, cyanides and the like in the coking waste water can be pyrolyzed and thermally oxidized into carbon dioxide, nitrogen and moisture by high-temperature smoke, and the residual organic components without pyrolysis and thermal oxidation can be washed by the secondary evaporation of the primary evaporation tower 5 and the secondary evaporation tower 6 and washed by the annular seam pipe 18, so that the residual organic components without pyrolysis and thermal oxidation can be pyrolyzed, Harmful components are washed and absorbed in the circulating drainage, and the pollutants are ensured not to be transferred into the atmosphere and also not to be transferred into a gas system in the next step through large-water-volume dilution and neutralization absorption of the circulating water, when the waste water generated by the coke oven 1 is conveyed to the second conveying line 4, the waste water in the second conveying line 4 is conveyed to the cold drum electric catching device 9 for treatment, the residual ammonia water can be conveyed to the coke quenching tower 17 through the fourth conveying line 11, the recycling of the ammonia water is effectively realized, the residual ammonia water can be conveyed into an ammonia still 12 through a third conveying line 10 for treatment, the ammonia still 12 is connected to a desulfurizing tower 14 and an ammonium sulfate treating tower 13, the desulfurizing tower 14 is used for realizing desulfurization and sulfur recovery, the ammonium sulfate treatment tower 13 can recover ammonium sulfate, and the benzene washing tower 15 and the debenzolization tower 16 can recover crude benzene resources, which is the use process of the wastewater degradation and recycling device for producing coke.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a waste water degradation recycles device for producing coke, includes coke oven (1), wastewater disposal basin (2), cold drum electricity catches device (9) and ammonia still (12), its characterized in that: the waste water output end of the coke oven (1) is connected with a first conveying line (3) and a second conveying line (4) through a conveying pump, a waste water pool (2) is connected to a primary evaporation tower (5) through the conveying pump, the output end of the primary evaporation tower (5) is connected to a secondary evaporation tower (6), the output end of the secondary evaporation tower (6) is connected to a circumferential seam venturi tube (18) and a sludge treatment system (8), the output end of the circumferential seam venturi tube (18) is connected to a composite dehydrator (7) and the sludge treatment system (8), the output end of the composite dehydrator (7) is connected to the sludge treatment system (8), the ammonia water output end of a cold drum electric catching device (9) is connected with a third conveying line (10) and a fourth conveying line (11) through the conveying pump, an ammonia distillation tower (12) is connected to a thiamine treatment tower (13) and a desulfurization tower (14), the thiamine treatment tower (13) is connected to a benzene washing tower (15), the benzene washing tower (15) is connected to a benzene removal tower (16).
2. The wastewater degradation recycling device for producing coke according to claim 1, wherein: the first transport line (3) is connected to a waste water basin (2).
3. The wastewater degradation recycling device for producing coke according to claim 1, wherein: the second conveying line (4) is connected to a cold drum electric catching device (9).
4. The wastewater degradation recycling device for producing coke according to claim 1, wherein: the third conveying line (10) is connected to an ammonia still (12).
5. The wastewater degradation recycling device for producing coke according to claim 1, wherein: the fourth transfer line (11) is connected to a quenching tower (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120699584.1U CN215049429U (en) | 2021-04-06 | 2021-04-06 | A waste water degradation device of recycling for producing coke |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120699584.1U CN215049429U (en) | 2021-04-06 | 2021-04-06 | A waste water degradation device of recycling for producing coke |
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| Publication Number | Publication Date |
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| CN215049429U true CN215049429U (en) | 2021-12-07 |
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| CN202120699584.1U Active CN215049429U (en) | 2021-04-06 | 2021-04-06 | A waste water degradation device of recycling for producing coke |
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| CN (1) | CN215049429U (en) |
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2021
- 2021-04-06 CN CN202120699584.1U patent/CN215049429U/en active Active
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