CN210656540U - Coal chemical wastewater treatment system - Google Patents
Coal chemical wastewater treatment system Download PDFInfo
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- CN210656540U CN210656540U CN201921090940.9U CN201921090940U CN210656540U CN 210656540 U CN210656540 U CN 210656540U CN 201921090940 U CN201921090940 U CN 201921090940U CN 210656540 U CN210656540 U CN 210656540U
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- 239000000126 substance Substances 0.000 title claims abstract description 35
- 239000003245 coal Substances 0.000 title claims abstract description 34
- 238000004065 wastewater treatment Methods 0.000 title abstract description 13
- 239000002351 wastewater Substances 0.000 claims abstract description 70
- 238000002425 crystallisation Methods 0.000 claims abstract description 19
- 230000008025 crystallization Effects 0.000 claims abstract description 19
- 238000004094 preconcentration Methods 0.000 claims abstract description 14
- 239000007800 oxidant agent Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 20
- 239000007921 spray Substances 0.000 claims description 4
- 238000009279 wet oxidation reaction Methods 0.000 abstract description 21
- 238000001704 evaporation Methods 0.000 abstract description 9
- 230000008020 evaporation Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000012141 concentrate Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000002306 biochemical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229940111121 antirheumatic drug quinolines Drugs 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 150000001716 carbazoles Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 150000002475 indoles Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- -1 polycyclic aromatic compounds Chemical class 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 150000003248 quinolines Chemical class 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A coal chemical wastewater treatment system belongs to the technical field of wastewater treatment. The coal chemical industry wastewater treatment system comprises a wet type oxidizer, a wastewater preconcentration subsystem and a crystallization subsystem. Before entering the wet oxidation reactor, the coal chemical industry wastewater is heated and evaporated in the low-temperature multi-effect evaporator for preconcentration, so that the amount of the coal chemical industry wastewater entering the wet oxidation reactor is greatly reduced, the energy consumption of the wet oxidation reactor is reduced, and the cost for treating the wastewater by the wet oxidation reaction is obviously reduced. Steam generated by flashing high-temperature and high-pressure wastewater at the outlet of the wet oxidation reactor is used as a heat source of the low-temperature multi-effect evaporator, so that the concentration of the coal chemical wastewater can be completed without an external heat source. In the process of evaporating and crystallizing the high-salinity wastewater subjected to wet oxidation treatment, the low-temperature secondary steam of a last-effect vertical tube evaporator in a horizontal-vertical tube evaporation system is used as a heat source of the horizontal tube evaporator to concentrate the wastewater, so that the energy consumption of zero discharge of the wastewater can be obviously reduced.
Description
Technical Field
The utility model relates to a coal chemical industry effluent disposal system belongs to waste water treatment technical field.
Background
Because of the characteristics of abundant coal resources and complete coal types in China, the coal chemical industry in China has unique development advantages and is rapidly developed under the support of national policies, however, the wastewater discharged by coal chemical enterprises is mainly high-concentration coal gas washing wastewater, contains a large amount of toxic and harmful substances such as phenol, cyanogen, oil, ammonia nitrogen and the like, COD in the comprehensive wastewater is about 5000mg/L generally, ammonia nitrogen is 200-500 mg/L, organic pollutants contained in the wastewater comprise phenols, polycyclic aromatic compounds, heterocyclic compounds containing nitrogen, oxygen and sulfur and the like, and the industrial wastewater containing organic compounds difficult to degrade is a typical industrial wastewater containing organic compounds difficult to degrade. Easily degradable organic matters in the wastewater are mainly phenolic compounds and benzene compounds; arsenic, naphthalene, furan and imidazole belong to degradable organic matters; the refractory organic substances include pyridine, carbazole, biphenyl, terphenyl, etc. The highly polluted coal chemical wastewater also promotes the rapid development of the wastewater treatment field, the domestic technology for treating the coal chemical wastewater at present mainly comprises a biochemical method, a wet oxidation method and the like, the biochemical method has poor treatment effect on some refractory organic matters such as quinolines, indoles, pyridines, carbazoles and the like, the wet oxidation method has obvious treatment effect on COD (chemical oxygen demand), but the treatment cost is high, and in order to fully exert the advantages of the wet oxidation technology on COD treatment, a new technology is urgently needed to be developed to reduce the treatment cost of wet oxidation.
Disclosure of Invention
In order to make up the deficiency of the prior art, the utility model provides a coal chemical wastewater treatment system, mainly used waste water treatment. The treatment system consists of two parts of wastewater pre-concentration and wastewater concentration and crystallization. The wastewater after passing through the triple-effect evaporator realizes preconcentration, improves the oxidation treatment efficiency and reduces the treatment cost. The high-salinity wastewater after flash evaporation passes through the preconcentration horizontal tube evaporator and the dual-effect vertical tube evaporator to be evaporated and crystallized, so that zero emission is realized, and the pollution to the environment is reduced.
The utility model adopts the following technical scheme: the utility model provides a coal chemical industry effluent disposal system, it includes wet-type oxidizer, it still includes waste water preconcentration subsystem and crystallization subsystem, waste water preconcentration subsystem contains flash tank, low temperature multi-effect evaporator, condenser and vacuum pump, and the charge pump of supplying with coal chemical industry waste water passes through the tube side access connection of pipeline with the condenser, and the tube side export of condenser is through each effect import shower of pipeline parallel connection low temperature multi-effect evaporator, the preceding secondary steam pipe connection of effect of low temperature multi-effect evaporator next steam chamber of effecting, each effect export of low temperature multi-effect evaporator adopts the pipeline to connect gradually wet-type oxidizer and flash tank through the delivery pump, the upper portion of flash tank is through the steam inlet of steam pipe connection low temperature multi-effect evaporator, and the shell side import of low temperature multi-effect evaporator's steam outlet connection condenser, and the shell side export of condenser is through pipe connection condensate pump and vacuum pump, the condensed water in the steam cavity is also connected with a condensed water pump through a pipeline; the crystallization subsystem comprises a horizontal tube evaporator, a second-effect vertical tube evaporator, a first-effect vertical tube evaporator and a centrifugal crystallization device, a medium-pressure steam pipeline is connected with a shell side steam inlet of the first-effect vertical tube evaporator, a shell side steam outlet of the first-effect vertical tube evaporator and a secondary steam pipeline at the top of the first-effect vertical tube evaporator are connected with a shell side steam inlet of the second-effect vertical tube evaporator, and a shell side steam outlet of the second-effect vertical tube evaporator and a secondary steam pipeline at the top of the second-effect vertical tube evaporator are connected with a tube side steam inlet of the horizontal tube evaporator; the lower part of the flash tank is connected with a shell pass inlet of the horizontal tube evaporator through a high-salinity wastewater pipeline, and a shell pass outlet of the horizontal tube evaporator is sequentially connected with a tube pass of the second-effect vertical tube evaporator, a tube pass of the first-effect vertical tube evaporator and a centrifugal crystallization device in series through pipelines; the tube side steam outlet and the shell side steam outlet of the horizontal tube evaporator are connected to the shell side inlet of the condenser through pipelines; and the tube side condensate water of the horizontal tube evaporator, the shell side condensate water of the second-effect vertical tube evaporator and the shell side condensate water of the first-effect vertical tube evaporator and a condensate water pump are connected with a condensate water tank.
The utility model has the advantages that: the coal chemical industry wastewater treatment system comprises a wet type oxidizer, a wastewater preconcentration subsystem and a crystallization subsystem. Before entering the wet oxidation reactor, the coal chemical industry wastewater is heated and evaporated in the low-temperature multi-effect evaporator for preconcentration, so that the amount of the coal chemical industry wastewater entering the wet oxidation reactor is greatly reduced, the energy consumption of the wet oxidation reactor is reduced, and the cost for treating the wastewater by the wet oxidation reaction is obviously reduced. Steam generated by flashing high-temperature and high-pressure wastewater at the outlet of the wet oxidation reactor is used as a heat source of the low-temperature multi-effect evaporator, so that the concentration of the coal chemical wastewater can be completed without an external heat source. In the process of evaporating and crystallizing the high-salinity wastewater subjected to wet oxidation treatment, the low-temperature secondary steam of a last-effect vertical tube evaporator in a horizontal-vertical tube evaporation system is used as a heat source of the horizontal tube evaporator to concentrate the wastewater, so that the energy consumption of zero discharge of the wastewater can be obviously reduced.
Drawings
FIG. 1 is a diagram of a coal chemical wastewater treatment system.
In the figure: 1. the system comprises a wet oxidation reactor, 2, a flash tank, 3, a low-temperature multi-effect evaporator, 3a, a spray pipe, 3b, a steam cavity, 4, a condenser, 5, a vacuum pump, 6, a feed pump, 7, a horizontal pipe concentration evaporator, 8, a second-effect vertical pipe evaporator, 9, a first-effect vertical pipe evaporator, 10, a conveying pump, 11, a condensate pump, 12, a centrifugal crystallization device, 13 and a condensate water tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.
FIG. 1 shows a diagram of a coal chemical wastewater treatment system. In the figure, the coal chemical industry wastewater treatment system comprises a wet type oxidizer 1, a wastewater preconcentration subsystem and a crystallization subsystem. The wastewater preconcentration subsystem comprises a flash tank 2, a low-temperature multi-effect evaporator 3, a condenser 4 and a vacuum pump 5, a feed pump 6 for supplying wastewater in the coal chemical industry is connected with a tube side inlet of the condenser 4 through a pipeline, a tube side outlet of the condenser 4 is connected with each effect inlet spray pipe 3a of the low-temperature multi-effect evaporator 3 in parallel through a pipeline, and a secondary steam pipeline of a previous effect of the low-temperature multi-effect evaporator 3 is connected with a steam cavity 3b of a next effect. The outlets of the low-temperature multi-effect evaporator 3 are sequentially connected with the wet type oxidizer 1 and the flash tank 2 through a delivery pump 10 by adopting pipelines, the upper part of the flash tank 2 is connected with the steam inlet of the low-temperature multi-effect evaporator 3 through a steam pipeline, the steam outlet of the low-temperature multi-effect evaporator 3 is connected with the shell pass inlet of the condenser 4, the shell pass outlet of the condenser 4 is connected with the condensate pump 11 and the vacuum pump 5 through pipelines, and the condensate water in the steam cavity 3b is also connected with the condensate pump 11 through a pipeline. The crystallization subsystem comprises a horizontal tube evaporator 7, a second-effect vertical tube evaporator 8, a first-effect vertical tube evaporator 9 and a centrifugal crystallization device 12, a medium-pressure steam pipeline is connected with a shell-side steam inlet of the first-effect vertical tube evaporator 9, a shell-side steam outlet of the first-effect vertical tube evaporator 9 and a secondary steam pipeline at the top of the first-effect vertical tube evaporator 9 are connected with a shell-side steam inlet of the second-effect vertical tube evaporator 8, and a shell-side steam outlet of the second-effect vertical tube evaporator 8 and a secondary steam pipeline at the top of the second-effect vertical tube evaporator 8 are connected with a tube-side steam inlet of the horizontal tube evaporator 7. The lower part of the flash tank 2 is connected with a shell pass inlet of a horizontal tube evaporator 7 through a high-salinity wastewater pipeline, and a shell pass outlet of the horizontal tube evaporator 7 is sequentially connected with a tube pass of a second-effect vertical tube evaporator 8, a tube pass of a first-effect vertical tube evaporator 9 and a centrifugal crystallization device 12 in series through pipelines. The tube-side vapor outlet and the shell-side vapor outlet of the horizontal tube evaporator 7 are connected to the shell-side inlet of the condenser 4 via pipes. The tube side condensate water of the horizontal tube evaporator 7, the shell side condensate water of the second effect vertical tube evaporator 8 and the first effect vertical tube evaporator 9 and the condensate water pump 11 are connected with a condensate water tank 13.
The treatment method of the coal chemical industry wastewater comprises the following steps:
(a) the coal chemical industry wastewater is sent to a tube pass in a condenser 4 by a feed pump 6, the last effect of a low-temperature multi-effect evaporator 3 supplies steam to a shell pass of the condenser 4 with vacuum degree for preheating the wastewater, and the temperature of the wastewater is increased from 20-25 ℃ to 40-50 ℃;
(b) the preheated coal chemical industry wastewater is respectively sprayed into each effect evaporator through a spray pipe 3a in a low-temperature multi-effect evaporator 3 to be heated and evaporated, secondary steam generated in the former effect evaporator is also used as a heat source of the next effect steamer to finish preconcentration, the salinity of the wastewater is increased from 1-3% to 5-6%, and the preconcentrated wastewater is conveyed to a wet oxidation reactor 1 through a conveying pump 10; COD of the wastewater at the outlet of the wet oxidation reactor 1 is reduced to 1500-2000mg/L, the high-temperature and high-pressure wastewater at the temperature of 250-300 ℃ is flashed in a flash tank 2, the low-temperature steam at the temperature of 55-65 ℃ generated by flashing is used as a heating heat source of a low-temperature multi-effect evaporator 3, and the salinity of the flashed wastewater is increased to 7-8% from 5-6%;
(c) medium-pressure steam is used as a heat source of the first-effect vertical tube evaporator 9, the second-effect vertical tube evaporator 8 and the horizontal tube evaporator 7, secondary steam generated by the first-effect vertical tube evaporator 9 is also used as a heat source of the second-effect vertical tube evaporator 8, and secondary steam generated by the second-effect vertical tube evaporator 8 is also used as a heat source of the horizontal tube evaporator 7;
(d) the coal chemical industry wastewater after flash evaporation is concentrated again in the horizontal tube evaporator 7, the salinity of the wastewater is improved from 7-8% to 8-9%, the concentrated wastewater is heated and evaporated in the two-effect vertical tube evaporator connected in series to generate saturated solution, crystallization is completed in the centrifugal crystallization device 12, and zero discharge of the wastewater is realized;
(e) and steam condensate water in the low-temperature multi-effect evaporator 3, the condenser 4, the horizontal tube evaporator 7, the second-effect vertical tube evaporator 8 and the first-effect vertical tube evaporator 9 is recycled into a condensate water tank 13.
By adopting the technical scheme, the coal chemical industry wastewater enters the condenser for preheating after being pressurized by the feed pump, and exchanges heat with the last-effect steam of the low-temperature multi-effect evaporator entering the condenser, the temperature of the coal chemical industry wastewater is raised to 50 ℃ from 20 ℃, and the steam is condensed into liquid to flow out. The preheated coal chemical wastewater flows to a low-temperature multi-effect evaporator, is heated and evaporated in the low-temperature multi-effect evaporator, the salinity of the wastewater is increased from 3% to 5%, and then is pressurized and conveyed to a wet oxidation reactor and a flash tank by a conveying pump; the pressurized wastewater enters a high-temperature high-pressure wet oxidation reactor, and most of COD in the wastewater can be removed under the action of a catalyst at high temperature and high pressure. The wastewater at about 300 ℃ treated by the wet-type oxidizer enters a flash tank for flash evaporation, saturated steam obtained by flash evaporation is used as a heat source of a first-effect evaporator of the low-temperature multi-effect evaporator, the unevaporated wastewater in the flash tank flows to a horizontal tube evaporator for secondary concentration, and the salinity of the wastewater is improved from about 5% to about 6.7%. The horizontal tube evaporator uses medium-pressure steam and steam discharged by a double-effect series-connected vertical tube evaporator as heat sources, high-salt wastewater flowing out of a flash tank is evaporated and concentrated, the generated steam is condensed into condensate water through a condenser, and the salinity of the high-salt wastewater is concentrated to about 9% from 6.7% after evaporation. The concentrated high-salinity wastewater flows to the dual-effect vertical tube evaporator, the dual-effect vertical tube evaporator mainly uses external high-temperature medium-pressure steam as a heat source to evaporate and concentrate 9% of saline wastewater to generate saturated wastewater, and the saturated wastewater is crystallized in the centrifugal crystallization device, so that zero emission of pollutants is realized.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may still modify the technical solutions described in the foregoing embodiments, or may substitute some or all of the technical features of the embodiments; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (1)
1. The utility model provides a coal chemical industry effluent disposal system, it includes wet-type oxidizer (1), characterized by: the system also comprises a wastewater preconcentration subsystem and a crystallization subsystem, wherein the wastewater preconcentration subsystem comprises a flash tank (2), a low-temperature multi-effect evaporator (3), a condenser (4) and a vacuum pump (5), a feed pump (6) for supplying coal chemical wastewater is connected with a tube side inlet of the condenser (4) through a pipeline, a tube side outlet of the condenser (4) is connected with each effect inlet spray pipe (3 a) of the low-temperature multi-effect evaporator (3) in parallel through a pipeline, a secondary steam pipeline of the previous effect of the low-temperature multi-effect evaporator (3) is connected with a steam cavity (3 b) of the next effect, each effect outlet of the low-temperature multi-effect evaporator (3) is sequentially connected with a wet-type oxidizer (1) and the flash tank (2) through a delivery pump (10), the upper part of the flash tank (2) is connected with a steam inlet of the low-temperature multi-effect evaporator (3) through a steam pipeline, and a steam outlet of the low-temperature multi, the shell pass outlet of the condenser (4) is connected with a condensate pump (11) and a vacuum pump (5) through pipelines, and the condensate water in the steam cavity (3 b) is also connected with the condensate pump (11) through a pipeline; the crystallization subsystem comprises a horizontal tube evaporator (7), a second-effect vertical tube evaporator (8), a first-effect vertical tube evaporator (9) and a centrifugal crystallization device (12), a medium-pressure steam pipeline is connected with a shell-side steam inlet of the first-effect vertical tube evaporator (9), a shell-side steam outlet of the first-effect vertical tube evaporator (9) and a secondary steam pipeline at the top of the first-effect vertical tube evaporator (9) are connected with a shell-side steam inlet of the second-effect vertical tube evaporator (8), and a shell-side steam outlet of the second-effect vertical tube evaporator (8) and a secondary steam pipeline at the top of the second-effect vertical tube evaporator (8) are connected with a tube-side steam inlet of the horizontal tube evaporator (7); the lower part of the flash tank (2) is connected with a shell pass inlet of a horizontal tube evaporator (7) through a high-salinity wastewater pipeline, and a shell pass outlet of the horizontal tube evaporator (7) is sequentially connected with a tube pass of a second-effect vertical tube evaporator (8), a tube pass of a first-effect vertical tube evaporator (9) and a centrifugal crystallization device (12) in series through pipelines; the tube side steam outlet and the shell side steam outlet of the horizontal tube evaporator (7) are connected to the shell side inlet of the condenser (4) through pipelines; and the tube side condensate water of the horizontal tube evaporator (7), the shell side condensate water of the second effect vertical tube evaporator (8) and the first effect vertical tube evaporator (9) and a condensate water pump (11) are connected with a condensate water tank (13).
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| CN201921090940.9U CN210656540U (en) | 2019-07-12 | 2019-07-12 | Coal chemical wastewater treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110407385A (en) * | 2019-07-12 | 2019-11-05 | 绍兴润泰环保科技有限公司 | A kind of coal chemical industrial wastewater processing system and its processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110407385A (en) * | 2019-07-12 | 2019-11-05 | 绍兴润泰环保科技有限公司 | A kind of coal chemical industrial wastewater processing system and its processing method |
| CN110407385B (en) * | 2019-07-12 | 2024-04-12 | 绍兴润泰环保科技有限公司 | Coal chemical wastewater treatment system and treatment method thereof |
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