CN110407385A - A kind of coal chemical industrial wastewater processing system and its processing method - Google Patents
A kind of coal chemical industrial wastewater processing system and its processing method Download PDFInfo
- Publication number
- CN110407385A CN110407385A CN201910630161.1A CN201910630161A CN110407385A CN 110407385 A CN110407385 A CN 110407385A CN 201910630161 A CN201910630161 A CN 201910630161A CN 110407385 A CN110407385 A CN 110407385A
- Authority
- CN
- China
- Prior art keywords
- effect
- evaporator
- waste water
- vertical tube
- tube evaporator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 42
- 239000000126 substance Substances 0.000 title claims abstract description 42
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 39
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 85
- 239000002351 wastewater Substances 0.000 claims abstract description 69
- 238000009279 wet oxidation reaction Methods 0.000 claims abstract description 32
- 238000002425 crystallisation Methods 0.000 claims abstract description 23
- 230000008025 crystallization Effects 0.000 claims abstract description 23
- 238000004094 preconcentration Methods 0.000 claims abstract description 19
- 238000001704 evaporation Methods 0.000 claims abstract description 15
- 230000008020 evaporation Effects 0.000 claims abstract description 15
- 238000007701 flash-distillation Methods 0.000 claims abstract description 7
- 238000002207 thermal evaporation Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 230000008676 import Effects 0.000 claims description 15
- 238000005119 centrifugation Methods 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 10
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- 239000012047 saturated solution Substances 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 5
- 150000003839 salts Chemical class 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
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- 238000002306 biochemical method 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
- 238000005516 engineering process Methods 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 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
- 206010011224 Cough Diseases 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- WNYFTWLTSLCQLO-UHFFFAOYSA-N [As].N1=CC=CC=C1 Chemical compound [As].N1=CC=CC=C1 WNYFTWLTSLCQLO-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 229940111121 antirheumatic drug quinolines Drugs 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 150000001716 carbazoles Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002475 indoles Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 150000003248 quinolines Chemical class 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
Abstract
A kind of coal chemical industrial wastewater processing system and its processing method, belong to technical field of waste water processing.The coal chemical industrial wastewater processing system includes wet oxidation device, waste water pre-concentration subsystem and crystallization subsystem.Coal chemical industrial waste water is before entering wet oxidation reactor, pre-concentration is carried out by thermal evaporation in low-temperature multi-effect evaporator, the coal chemical industrial waste water amount into wet oxidation device is greatly reduced, the energy consumption of wet oxidation reactor reduces, and significantly reduces the cost of wet oxidation reaction processing waste water.The steam generated using the high-temperature high-pressure waste water flash distillation of wet oxidation reactor outlet, it can be achieved that without under conditions of external heat source, completes the concentration of coal chemical industrial waste water as the heat source of low-temperature multi-effect evaporator.To in wet oxidation treated high-salt wastewater evaporation and crystal process, using the low temperature secondary steam of end effect vertical tube evaporator in level-vertical tube vapo(u)rization system as the heat source of horizontal tube evaporator, waste water is concentrated, the energy consumption of wastewater zero discharge can be significantly reduced.
Description
Technical field
The present invention relates to a kind of coal chemical industrial wastewater processing system and its processing methods, belong to technical field of waste water processing.
Background technique
Due to the feature that rich coal resources in China, coal are complete, China's coal chemical industry has advantageous development
Advantage develops rapidly under the support of national policy, however coal chemical industry enterprises waste discharge is with high concentration gas washing wastewater
Main, containing poisonous and harmful substances such as a large amount of phenol, cyanogen, oil, ammonia nitrogens, COD is generally in 5000mg/L or so, ammonia nitrogen in comprehensive wastewater
In 200 ~ 500mg/L, organic pollutant contained by waste water includes the jeterocyclic chemistry of phenols, polycyclc aromatic compound and nitrogenous, oxygen, sulphur
Object etc. is closed, is a kind of industrial wastewater for typically containing organic compound difficult to degrade.Easily biodegradable organics in waste water are main
It is phenolic compound and benzene-like compounds；Arsenic coughs up, naphthalene, furans, narrows azole and belongs to degradable type organic；Organic matter difficult to degrade
Mainly there are arsenic pyridine, carbazole, biphenyl, terphenyl etc..The coal chemical industrial waste water of high pollution also promotes the quick hair of field of waste water treatment
Exhibition, the technology of domestic processing coal chemical industrial waste water mainly has biochemical method, wet oxidation process etc. at present, and biochemical method is to quinolines, indoles
Some hardly degraded organic substance treatment effects such as class, pyridines, carbazoles are poor, although and wet oxidation process to COD treatment effect
Obviously, but processing cost is high, and in order to give full play to the advantage that Wet Oxidation Process handles COD, urgent need is developed new
Technology reduces wet oxidation processing cost.
Summary of the invention
In order to make up for the deficiencies of the prior art, the present invention proposes a kind of coal chemical industrial wastewater processing system and its processing method,
It is mainly used for wastewater treatment.The processing system crystallizes two parts by waste water pre-concentration and Waste water concentrating and forms.By triple effect evaporation
Waste water after device realizes pre-concentration, improves oxidation processes efficiency, reduces processing cost.High-salt wastewater after flash distillation passes through
Pre-concentration horizontal tube evaporator and two effect vertical tube evaporators, evaporative crystallization realize zero-emission, reduce the pollution to environment.
The present invention adopts the following technical scheme: a kind of coal chemical industrial wastewater processing system, it includes wet oxidation device, it is also wrapped
Include waste water pre-concentration subsystem and crystallization subsystem, the waste water pre-concentration subsystem include flash tank, low-temperature multi-effect evaporator,
Condenser and vacuum pump, the feed pump for supplying coal chemical industrial waste water are connected by the tube side import of pipeline and condenser, condenser
Tube side is exported connects each effect import spray tube of low-temperature multi-effect evaporator through pipeline side by side, and the two of the previous effect of low-temperature multi-effect evaporator
Secondary jet chimney connects the vapor chamber of next effect, and the low-temperature multi-effect evaporator is respectively imitated outlet and successively connected using pipeline through delivery pump
Wet oxidation device and flash tank are connect, the top of the flash tank connects the steam inlet of low-temperature multi-effect evaporator through jet chimney,
The shell side import of the steam (vapor) outlet connection condenser of low-temperature multi-effect evaporator, the shell-side outlet of condenser connect condensed water through pipeline
Pump and vacuum pump, the condensed water in vapor chamber also connect condensate pump through pipeline；The crystallization subsystem is evaporated comprising horizontal tube
Device, the second effect vertical tube evaporator, the first effect vertical tube evaporator and centrifugation crystallization apparatus, Medium Pressure Steam Pipeline connection the first effect vertical tube
Two at the top of the shell side steam inlet of evaporator, the shell side steam (vapor) outlet of the first effect vertical tube evaporator and the first effect vertical tube evaporator
The shell side steam inlet of secondary jet chimney connection the second effect vertical tube evaporator, the shell side steam (vapor) outlet of the second effect vertical tube evaporator and
The tube side steam inlet of secondary steam pipeline connection horizontal tube evaporator at the top of second effect vertical tube evaporator；The flash tank
Shell side import of the lower part through high-salt wastewater pipeline connection horizontal tube evaporator, the shell-side outlet of horizontal tube evaporator using pipeline according to
The tube side and centrifugation crystallization apparatus of the secondary tube side that the second effect vertical tube evaporator is connected in series, the first effect vertical tube evaporator；The water
The tube side steam (vapor) outlet and shell side steam (vapor) outlet of horizontal tube evaporator are connected to the shell side import of condenser through pipeline；The horizontal tube
The shell side condensed water of evaporator tube side condensed water, the second effect vertical tube evaporator and the first effect vertical tube evaporator is connected with condensate pump
Condensation water tank.
A kind of processing method of the coal chemical industrial waste water, using the following steps:
(a) coal chemical industrial waste water is by feeding the tube side being pumped into condenser, and the end effect of low-temperature multi-effect evaporator is to there is vacuum degree
The shell side of condenser supplies steam preheating waste water, and waste water temperature is increased to 40 DEG C -50 DEG C by 20 DEG C -25 DEG C；
(b) coal chemical industrial waste water after preheated sprays into each effect evaporator heating steaming through the spray tube in low-temperature multi-effect evaporator respectively
Hair, the secondary steam generated in preceding 1st effective evaporator the also heat source as next effect steamer, completion pre-concentration, waste water salinity by
1%-3% is increased to 5%-6%, and the waste water after pre-concentration is transported to wet oxidation reactor through delivery pump；Wet oxidation reactor goes out
The waste water COD of mouth is reduced to 1500-2000mg/L, and 250 DEG C -300 DEG C of high-temperature high-pressure waste water flashes in flash tank, flash distillation life
At heat source of 55 DEG C -65 DEG C of the Low Temperature Steam as low-temperature multi-effect evaporator, the waste water salinity after flash distillation mentions by 5%-6%
Height arrives 7%-8%；
(c) heat source that middle pressure steam imitates vertical tube evaporator, the second effect vertical tube evaporator and horizontal tube evaporator as first, first
The secondary steam that effect vertical tube evaporator generates also is used as the heat source of the second effect vertical tube evaporator, what the second effect vertical tube evaporator generated
Secondary steam is also used as the heat source of horizontal tube evaporator；
(d) coal chemical industrial waste water after flashing is concentrated again in horizontal tube evaporator, and waste water salinity is increased to 8%- by 7%-8%
9%, the waste water after concentration is generated saturated solution by thermal evaporation in concatenated two effects vertical tube evaporator, in centrifugation crystallization apparatus
Crystallization is completed, realizes the zero-emission of waste water；
(e) in low-temperature multi-effect evaporator, condenser, horizontal tube evaporator, the second effect vertical tube evaporator and the first effect vertical tube evaporation
Reclamation of condensate water in device enters condensation water tank.
The beneficial effects of the present invention are: this coal chemical industrial wastewater processing system includes wet oxidation device, waste water pre-concentration
System and crystallization subsystem.Coal chemical industrial waste water is before entering wet oxidation reactor, by thermal evaporation in low-temperature multi-effect evaporator
Pre-concentration is carried out, the coal chemical industrial waste water amount into wet oxidation device is greatly reduced, the energy consumption of wet oxidation reactor reduces,
Significantly reduce the cost of wet oxidation reaction processing waste water.Life is flashed using the high-temperature high-pressure waste water of wet oxidation reactor outlet
At steam as low-temperature multi-effect evaporator heat source, it can be achieved that without completing coal chemical industrial waste water under conditions of external heat source
Concentration.To in wet oxidation treated high-salt wastewater evaporation and crystal process, end effect vertical tube in level-vertical tube vapo(u)rization system is utilized
Heat source of the low temperature secondary steam of evaporator as horizontal tube evaporator, is concentrated waste water, can significantly reduce waste water zero-emission
The energy consumption put.
Detailed description of the invention
Fig. 1 is a kind of coal chemical industrial wastewater processing system figure.
In figure: 1, wet oxidation reactor, 2, flash tank, 3, low-temperature multi-effect evaporator, 3a, spray tube, 3b, vapor chamber,
4, condenser, 5, vacuum pump, 6, feed pump, 7, horizontal tube concentration evaporator, the 8, second effect vertical tube evaporator, the 9, first effect vertical tube
Evaporator, 10, delivery pump, 11, condensate pump, 12, centrifugation crystallization apparatus, 13, condensation water tank.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, technical solution in the embodiment of the present invention carry out clearly,
It is fully described by, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Fig. 1 shows a kind of coal chemical industrial wastewater processing system figure.In figure, this coal chemical industrial wastewater processing system includes wet type
Oxidator 1, waste water pre-concentration subsystem and crystallization subsystem.Waste water pre-concentration subsystem includes flash tank 2, low-temperature multi-effect evaporation
Device 3, condenser 4 and vacuum pump 5, the feed pump 6 for supplying coal chemical industrial waste water are connect by pipeline with the tube side import of condenser 4,
The tube side outlet of condenser 4 connects each effect import spray tube 3a of low-temperature multi-effect evaporator 3, low-temperature multi-effect evaporation through pipeline side by side
The secondary steam pipeline of the previous effect of device 3 connects the vapor chamber 3b of next effect.Low-temperature multi-effect evaporator 3 is respectively passed through effect outlet using pipeline
Delivery pump 10 is sequentially connected wet oxidation device 1 and flash tank 2, and the top of flash tank 2 is through jet chimney connection low-temperature multi-effect evaporation
The steam inlet of device 3, the shell side import of the steam (vapor) outlet connection condenser 4 of low-temperature multi-effect evaporator 3, the shell side of condenser 4 go out
Mouth connects condensate pump 11 and vacuum pump 5 through pipeline, and the condensed water in vapor chamber 3b also connects condensate pump 11 through pipeline.Crystallization
Subsystem includes that horizontal tube evaporator 7, second imitates the effect vertical tube evaporator 9 of vertical tube evaporator 8, first and centrifugation crystallization apparatus 12,
The shell side steam inlet of Medium Pressure Steam Pipeline connection the first effect vertical tube evaporator 9, the shell side steam of the first effect vertical tube evaporator 9 go out
Mouth connects the shell side steam inlet of the second effect vertical tube evaporator 8 with the secondary steam pipeline at 9 top of the first effect vertical tube evaporator, the
The secondary steam pipeline at 8 top of shell side steam (vapor) outlet and the second effect vertical tube evaporator of two effect vertical tube evaporators 8 connects horizontal tube
The tube side steam inlet of evaporator 7.Shell side import of the lower part of flash tank 2 through high-salt wastewater pipeline connection horizontal tube evaporator 7,
The shell-side outlet of horizontal tube evaporator 7 is sequentially connected in series the tube side of the second effect vertical tube evaporator 8, the first effect vertical tube using pipeline
The tube side and centrifugation crystallization apparatus 12 of evaporator 9.The tube side steam (vapor) outlet and shell side steam (vapor) outlet of horizontal tube evaporator 7 are through pipeline
It is connected to the shell side import of condenser 4.7 tube side condensed water of horizontal tube evaporator, the second effect vertical tube evaporator 8 and the first effect vertical tube
The shell side condensed water and condensate pump 11 of evaporator 9 connect condensation water tank 13.
The processing method of this coal chemical industrial waste water, using the following steps:
(a) coal chemical industrial waste water is sent into the tube side in condenser 4 by feed pump 6, and the end effect of low-temperature multi-effect evaporator 3 is to there is vacuum degree
The shell side of condenser 4 supply steam preheating waste water, waste water temperature is increased to 40 DEG C -50 DEG C by 20 DEG C -25 DEG C；
(b) coal chemical industrial waste water after preheated sprays into each effect evaporator through the spray tube 3a in low-temperature multi-effect evaporator 3 respectively and adds
Thermal evaporation, the secondary steam generated in preceding 1st effective evaporator the also heat source as next effect steamer, completes pre-concentration, waste water salt
Degree is increased to 5%-6% by 1%-3%, and the waste water after pre-concentration is transported to wet oxidation reactor 1 through delivery pump 10；Wet oxidation is anti-
The waste water COD for answering device 1 to export is reduced to 1500-2000mg/L, and 250 DEG C -300 DEG C of high-temperature high-pressure waste water is dodged in flash tank 2
It steams, flashes heat source of 55 DEG C -65 DEG C of the Low Temperature Steam of generation as low-temperature multi-effect evaporator 3, the waste water salt after flash distillation
Degree is increased to 7%-8% by 5%-6%；
(c) middle pressure steam imitates the heat source of vertical tube evaporator 8 and horizontal tube evaporator 7 as the first effect vertical tube evaporator 9, second,
The secondary steam that first effect vertical tube evaporator 9 generates also is used as the heat source of the second effect vertical tube evaporator 8, the second effect vertical tube evaporator
8 secondary steams generated are also used as the heat source of horizontal tube evaporator 7；
(d) coal chemical industrial waste water after flashing is concentrated again in horizontal tube evaporator 7, and waste water salinity is increased to 8%- by 7%-8%
9%, the waste water after concentration is generated saturated solution by thermal evaporation in concatenated two effects vertical tube evaporator, in centrifugation crystallization apparatus 12
Middle completion crystallization, realizes the zero-emission of waste water；
(e) vertical tube evaporator 8 and the first effect vertical tube are imitated in low-temperature multi-effect evaporator 3, condenser 4, horizontal tube evaporator 7, second
Reclamation of condensate water in evaporator 9 enters condensation water tank 13.
Using above technical scheme, coal chemical industrial waste water enters condenser by feed pump pressurization and is preheated, cold with entering
The end effect steam heat-exchanging of the low-temperature multi-effect evaporator of condenser, coal chemical industrial waste water are increased to 50 DEG C by 20 DEG C, and steam is condensed into liquid
Outflow.Coal chemical industrial waste water after preheating flow to low-temperature multi-effect evaporator, and evaporation, waste water salt are heated in low-temperature multi-effect evaporator
Degree is increased to 5% by 3%, is then pressed and delivered to wet oxidation reactor and flash tank by delivery pump；Waste water after pressurization enters
High temperature and pressure wet oxidation reactor can remove exhausted most regions in waste water under the action of high temperature, high pressure, catalyst
COD.300 DEG C or so of waste water enters flash tank flash distillation after the processing of wet oxidation device, and the saturated vapor flashed is as low temperature
The heat source of the first evaporator of multi-effect evaporator, unevaporated waste water flow to horizontal tube evaporator and is concentrated again in flash tank, gives up
Salinity water is increased to 6.7% or so by 5% or so.Horizontal tube evaporator is with middle pressure steam and the concatenated vertical tube evaporator discharge of two effects
Steam as heat source, the high-salt wastewater flowed out from flash tank is concentrated by evaporation, the steam of generation is condensed into condensation through condenser
The salinity of high-salt wastewater is concentrated into 9% or so by 6.7% after evaporation by water.High-salt wastewater after concentration flow to the evaporation of two effect vertical tubes
9% brine waste is concentrated by evaporation, generates mainly using the middle pressure steam of external high temperature as heat source by device, two effect vertical tube evaporators
It is saturated waste water, is crystallized in centrifugation crystallization apparatus, realizes the zero-emission of pollutant.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.Although with reference to the foregoing embodiments
Invention is explained in detail, and those skilled in the art still can be to documented by aforementioned each implementation example
Technical solution is modified, or equivalent substitution of some or all of the technical features；And these are modified or replace
It changes, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (2)
1. a kind of coal chemical industrial wastewater processing system, it includes wet oxidation device (1), and it is characterized in that: further comprising waste water pre-concentrations
Subsystem and crystallization subsystem, the waste water pre-concentration subsystem include flash tank (2), low-temperature multi-effect evaporator (3), condenser
(4) and vacuum pump (5) feed pump (6) for, supplying coal chemical industrial waste water is connect by pipeline with the tube side import of condenser (4), cold
The tube side outlet of condenser (4) connects each effect import spray tube (3a) of low-temperature multi-effect evaporator (3), low-temperature multi-effect through pipeline side by side
The secondary steam pipeline of evaporator (3) previous effect connects the vapor chamber (3b) of next effect, and the low-temperature multi-effect evaporator (3) respectively imitates
Outlet is sequentially connected wet oxidation device (1) and flash tank (2), the top of the flash tank (2) through delivery pump (10) using pipeline
The steam (vapor) outlet of steam inlet through jet chimney connection low-temperature multi-effect evaporator (3), low-temperature multi-effect evaporator (3) connects condensation
The shell side import of device (4), the shell-side outlet of condenser (4) is through pipeline connection condensate pump (11) and vacuum pump (5), vapor chamber
Condensed water in (3b) also connects condensate pump (11) through pipeline；The crystallization subsystem includes horizontal tube evaporator (7), second
Imitate vertical tube evaporator (8), the first effect vertical tube evaporator (9) and centrifugation crystallization apparatus (12), the first effect of Medium Pressure Steam Pipeline connection
The shell side steam inlet of vertical tube evaporator (9), the shell side steam (vapor) outlet of the first effect vertical tube evaporator (9) and the first effect vertical tube evaporation
The shell side steam inlet of the second effect vertical tube evaporator (8) of secondary steam pipeline connection at the top of device (9), the second effect vertical tube evaporator
(8) shell side steam (vapor) outlet and second imitates secondary steam pipeline connection horizontal tube evaporator (7) at the top of vertical tube evaporator (8)
Tube side steam inlet；Shell side import of the lower part of the flash tank (2) through high-salt wastewater pipeline connection horizontal tube evaporator (7),
The shell-side outlet of horizontal tube evaporator (7) is sequentially connected in series the tube side of the second effect vertical tube evaporator (8), the first effect using pipeline
The tube side of vertical tube evaporator (9) and centrifugation crystallization apparatus (12)；The tube side steam (vapor) outlet and shell side of the horizontal tube evaporator (7)
Steam (vapor) outlet is connected to the shell side import of condenser (4) through pipeline；Horizontal tube evaporator (7) the tube side condensed water, the second effect
The shell side condensed water and condensate pump (11) connection condensation water tank (13) of vertical tube evaporator (8) and the first effect vertical tube evaporator (9).
2. a kind of processing method of coal chemical industrial waste water according to claim 1, it is characterized in that: using the following steps:
(a) coal chemical industrial waste water is sent into the tube side in condenser (4) by feed pump (6), and the end effect of low-temperature multi-effect evaporator (3) is to having
The shell side of the condenser (4) of vacuum degree supplies steam preheating waste water, and waste water temperature is increased to 40 DEG C -50 DEG C by 20 DEG C -25 DEG C；
(b) coal chemical industrial waste water after preheated sprays into each effect evaporation through the spray tube (3a) in low-temperature multi-effect evaporator (3) respectively
Device heating evaporation, the secondary steam generated in preceding 1st effective evaporator the also heat source as next effect steamer, completes pre-concentration, gives up
Salinity water is increased to 5%-6% by 1%-3%, and the waste water after pre-concentration is transported to wet oxidation reactor (1) through delivery pump (10)；It is wet
The waste water COD of formula oxidation reactor (1) outlet is reduced to 1500-2000mg/L, and 250 DEG C -300 DEG C of high-temperature high-pressure waste water is being dodged
Flash distillation, flashes heat source of 55 DEG C -65 DEG C of the Low Temperature Steam of generation as low-temperature multi-effect evaporator (3) in steaming pot (2), dodges
Waste water salinity after steaming is increased to 7%-8% by 5%-6%；
(c) middle pressure steam is as the first effect vertical tube evaporator (9), the second effect vertical tube evaporator (8) and horizontal tube evaporator (7)
Heat source, the secondary steam that the first effect vertical tube evaporator (9) generates also are used as the heat source of the second effect vertical tube evaporator (8), the second effect
The secondary steam that vertical tube evaporator (8) generates also is used as the heat source of horizontal tube evaporator (7)；
(d) coal chemical industrial waste water after flashing is concentrated again in horizontal tube evaporator (7), and waste water salinity is increased to by 7%-8%
8%-9%, the waste water after concentration is generated saturated solution by thermal evaporation in concatenated two effects vertical tube evaporator, in centrifugation crystallization apparatus
(12) crystallization is completed in, realizes the zero-emission of waste water；
(e) in low-temperature multi-effect evaporator (3), condenser (4), horizontal tube evaporator (7), the second effect vertical tube evaporator (8) and the
Reclamation of condensate water in one effect vertical tube evaporator (9) enters condensation water tank (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910630161.1A CN110407385B (en) | 2019-07-12 | 2019-07-12 | Coal chemical wastewater treatment system and treatment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910630161.1A CN110407385B (en) | 2019-07-12 | 2019-07-12 | Coal chemical wastewater treatment system and treatment method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110407385A true CN110407385A (en) | 2019-11-05 |
| CN110407385B CN110407385B (en) | 2024-04-12 |
Family
ID=68361284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910630161.1A Active CN110407385B (en) | 2019-07-12 | 2019-07-12 | Coal chemical wastewater treatment system and treatment method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110407385B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111592163A (en) * | 2020-05-28 | 2020-08-28 | 山东建筑大学 | Desulfurization wastewater zero-discharge treatment system and treatment method |
| CN112456720A (en) * | 2021-01-25 | 2021-03-09 | 华夏碧水环保科技有限公司北京分公司 | CWO and MVR combined wastewater pretreatment system and pretreatment method |
| CN114890532A (en) * | 2022-07-12 | 2022-08-12 | 杭州沈氏节能科技股份有限公司 | Spiral casing pipe reactor and micro-channel wet oxidation system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100128533A (en) * | 2009-05-28 | 2010-12-08 | 주식회사 에이치엔 | A processing apparatus for wastewater treatment having a condenser |
| CN102992427A (en) * | 2012-12-12 | 2013-03-27 | 众和海水淡化工程有限公司 | Wastewater zero-discharge treatment system |
| CN103553164A (en) * | 2013-10-25 | 2014-02-05 | 大连理工大学 | High-salt wastewater treatment system for horizontal-vertical tube falling film multiple-effect evaporation |
| CN105645497A (en) * | 2016-01-12 | 2016-06-08 | 华东理工大学 | Recovery method of coal gasification system brine wastewater |
| CN108773869A (en) * | 2018-05-15 | 2018-11-09 | 大连理工大学 | A kind of low-temperature multi-effect is concentrated by evaporation the processing system and its processing method of high-salt wastewater |
| CN210656540U (en) * | 2019-07-12 | 2020-06-02 | 绍兴润泰环保科技有限公司 | Coal chemical wastewater treatment system |
-
2019
- 2019-07-12 CN CN201910630161.1A patent/CN110407385B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100128533A (en) * | 2009-05-28 | 2010-12-08 | 주식회사 에이치엔 | A processing apparatus for wastewater treatment having a condenser |
| CN102992427A (en) * | 2012-12-12 | 2013-03-27 | 众和海水淡化工程有限公司 | Wastewater zero-discharge treatment system |
| CN103553164A (en) * | 2013-10-25 | 2014-02-05 | 大连理工大学 | High-salt wastewater treatment system for horizontal-vertical tube falling film multiple-effect evaporation |
| CN105645497A (en) * | 2016-01-12 | 2016-06-08 | 华东理工大学 | Recovery method of coal gasification system brine wastewater |
| CN108773869A (en) * | 2018-05-15 | 2018-11-09 | 大连理工大学 | A kind of low-temperature multi-effect is concentrated by evaporation the processing system and its processing method of high-salt wastewater |
| CN210656540U (en) * | 2019-07-12 | 2020-06-02 | 绍兴润泰环保科技有限公司 | Coal chemical wastewater treatment system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111592163A (en) * | 2020-05-28 | 2020-08-28 | 山东建筑大学 | Desulfurization wastewater zero-discharge treatment system and treatment method |
| CN112456720A (en) * | 2021-01-25 | 2021-03-09 | 华夏碧水环保科技有限公司北京分公司 | CWO and MVR combined wastewater pretreatment system and pretreatment method |
| CN114890532A (en) * | 2022-07-12 | 2022-08-12 | 杭州沈氏节能科技股份有限公司 | Spiral casing pipe reactor and micro-channel wet oxidation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110407385B (en) | 2024-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110407385A (en) | A kind of coal chemical industrial wastewater processing system and its processing method | |
| CN106495386A (en) | A kind of processing method and processing device of high salinity organic wastewater with difficult degradation thereby | |
| CN103922543B (en) | Garbage leachate disposal method | |
| CN101786754A (en) | Zero-emission treatment process for salt-containing wastewater | |
| WO2006094437A1 (en) | A method and an multi-effect evaporation for waste water of alkylene oxides | |
| CN104193064B (en) | Produce the treatment process of acid washing water and neutralized wastewater in tetrabromo-bisphenol process | |
| CN110386706A (en) | A kind for the treatment of high-concentration saline organic wastewater processing system and method | |
| CN110683695A (en) | Glycine wastewater recycling treatment process | |
| CN103265091A (en) | Mechanical ventilation forced circulation evaporation device and liquid material evaporation method | |
| CN114230071A (en) | Treatment method of DMF (dimethyl formamide) -containing wastewater | |
| CN208362091U (en) | A kind for the treatment of high-concentration saline organic wastewater processing system | |
| CN113735209A (en) | Full-quantification landfill leachate treatment device and process | |
| CN210656540U (en) | Coal chemical wastewater treatment system | |
| CN110790333A (en) | Leachate treatment system of hazardous waste disposal center | |
| CN215905885U (en) | Full-quantification landfill leachate treatment device | |
| CN104973641A (en) | Method of combination of flue gas low-temperature waste heat utilization and salt-containing waste water treatment | |
| CN210974332U (en) | A decyanation ammonia distillation system for surplus aqueous ammonia in coking production | |
| CN205391766U (en) | Evaporative concentration device of cellulose solvent NMMO aqueous solution | |
| CN103833094A (en) | Method for treating high-salinity wastewater | |
| CN211169932U (en) | Leachate treatment system of hazardous waste disposal center | |
| CN210736251U (en) | Carrier gas extraction HPE evaporation system | |
| CN211310912U (en) | Landfill leachate membrane concentrate evaporation concentration system | |
| CN210645170U (en) | Double-effect external circulation evaporator | |
| CN206352097U (en) | A kind of processing unit of high salinity organic wastewater with difficult degradation thereby | |
| CN111470564A (en) | Evaporation equipment and method with direct contact heat transfer and indirect contact heat transfer coupled |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |