CN109592858A - A kind of Coking Plant Wastewater zero-emission concentrated water processing system and its processing method - Google Patents
A kind of Coking Plant Wastewater zero-emission concentrated water processing system and its processing method Download PDFInfo
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- CN109592858A CN109592858A CN201910085875.9A CN201910085875A CN109592858A CN 109592858 A CN109592858 A CN 109592858A CN 201910085875 A CN201910085875 A CN 201910085875A CN 109592858 A CN109592858 A CN 109592858A
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- pipeline
- deduster
- coke oven
- coking
- flue gas
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- 238000004939 coking Methods 0.000 title claims abstract description 83
- 239000002351 wastewater Substances 0.000 title claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 238000003672 processing method Methods 0.000 title abstract description 13
- 239000000571 coke Substances 0.000 claims abstract description 82
- 239000003546 flue gas Substances 0.000 claims abstract description 60
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 36
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 26
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 20
- 230000023556 desulfurization Effects 0.000 claims abstract description 20
- 238000000889 atomisation Methods 0.000 claims abstract description 18
- 239000000779 smoke Substances 0.000 claims abstract description 14
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims description 33
- 230000001939 inductive effect Effects 0.000 claims description 5
- 239000010865 sewage Substances 0.000 abstract description 4
- 238000004581 coalescence Methods 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 8
- 230000008020 evaporation Effects 0.000 description 6
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000108 ultra-filtration 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
Abstract
The invention belongs to field of sewage treatment equipment more particularly to a kind of Coking Plant Wastewater zero-emission concentrated water processing systems and its processing method, comprising the following steps: step 1: the flue gas in coke oven flue enters desulfurizing tower and carries out dry desulfurization；Step 2: the flue gas after desulfurization enters deduster one through pipeline and is handled；Step 3: flue gas enters SCR reactor after the processing of deduster one and carries out denitration；The coking concentrated water being stored in coking wastewater pond after biochemical treatment and film process is pumped to coke oven flue gas in the pipeline after desulphurization denitration with water simultaneously, it is through the compressed air in air compressor that coking concentrated water is atomization in pipeline through atomizer；Step 4: the flue gas after denitration process evaporates the atomization waste water sprayed into pipeline, and the impurities in water that gives up enters deduster two with solid form and ash with flue gas under the action of air-introduced machine together, is captured by deduster two, with grey outlet；Step 5: water vapour enters coke oven smoke stack emission after smoke temperature is fallen to a certain temperature.
Description
Technical field
The present invention relates to field of sewage treatment equipment more particularly to a kind of Coking Plant Wastewater zero-emission concentrated water processing system and
Its processing method.
Background technique
Biochemical treatment is generally passed through in the sewage treatment of coke-oven plant at present, and into micro-filtration, ultrafiltration, reverse osmosis units, clear water is used
Used in recirculated water, concentrated water out, generally enter efficient evaporative crystallization technique, crystallization processes using an effect evaporation technique,
Or multiple-effect evaporation technology (MED) or mechanical vapor recompression technology (MVR), investment is big, energy consumption is high, for this purpose, inside coke-oven plant
It merges, optimize in technique, form coking concentrated water New Process for Treatment.
According to the requirement of national environmental protection policy, coke-stove gas burning generates in coke-oven plant's process of coking smoke SO 2, NOx,
Particulate matter cannot reach discharge index requirement, for this purpose, coke-oven plant must build flue gas desulfurization denitration dust-removing environmental protection facility.With
Coke oven enlargement, smoke evacuation is without white cigarette and the safety is improved, unique de- in conjunction with the low specific condition of coke oven exhaust gas temperature
Sulphur denitration scheme is different from the desulphurization denitration scheme of the other industries such as power plant, gradually converts from all multi-schemes to unique scheme,
That is 260 DEG C of flue gases enter low temperature SCR denitration after dry desulfurization, into waste heat boiler, enter after blower suction pressurization original
Smokestack high altitude discharge.
For coke-oven plant's sewage treatment after depth film process, concentrated water builds concentration and evaporation system, and investment is big, steam consumption quantity is big,
The steam of evaporation needs to condense or must also carry out biochemical treatment according to index, increases biochemical treatment load, repeats to increase operation
Expense, the steam boiler needed also want auxiliary construction, seriously increase production cost, for this reason, it may be necessary to a kind of Coking Plant Wastewater zero-emission
Put concentrated water processing system and its processing method.
Summary of the invention
The invention proposes a kind of Coking Plant Wastewater zero-emission concentrated water processing system and its processing methods.
To achieve the goals above, present invention employs following technical solutions:
A kind of Coking Plant Wastewater zero-emission concentrated water processing system and its processing method, including coke oven flue, the coke oven cigarette
The end in road is connected with coke oven chimney, and the side of the coke oven flue is connected with desulfurizing tower by pipeline, and the desulfurizing tower passes through
Pipeline is connected with deduster one, and the deduster one is connected with SCR reactor by pipeline, and the SCR reactor passes through pipeline
It is connected with deduster two, the deduster two-way piping is connected with coke oven chimney, between the SCR reactor and deduster two
Pipeline in be provided with spray head, the spray head is connected with air compressor and coking wastewater pump, the deduster on the outside of pipeline
Air-introduced machine is provided at pipeline between two and coke oven chimney.
Further, the end that draws water of the coking wastewater pump is connected with coking wastewater pond.
Further, the spray head is atomizer.
Further, the spray head is arranged in the middle position of pipeline, the quantity of the spray head at least one.
Further, the air-introduced machine and pipeline are tightly connected.
Further, the air inducing direction of the air-introduced machine is that deduster two arrives coke oven chimney direction.
A kind of Coking Plant Wastewater zero-emission concentrated water treatment method, comprising the following steps:
Step 1: the flue gas in coke oven flue enters desulfurizing tower and carries out dry desulfurization；
Step 2: the flue gas after desulfurization enters deduster one through pipeline and is handled；
Step 3: flue gas enters SCR reactor after the processing of deduster one and carries out denitration；Simultaneously will by biochemical treatment and
The coking concentrated water being stored in coking wastewater pond after film process is pumped to coke oven flue gas in the pipeline after desulphurization denitration with water,
It is through the compressed air in air compressor that coking concentrated water is atomization in pipeline through atomizer；
Step 4: the flue gas after denitration process evaporates the atomization waste water sprayed into pipeline, and the impurities in water that gives up is with solids
Form and ash enter deduster two with flue gas under the action of air-introduced machine together, are captured by deduster two, with grey outlet；
Step 5: water vapour enters coke oven smoke stack emission after smoke temperature is fallen to a certain temperature.
Usefulness: the present invention is atomized coalescence aerodynamic field by construction flue inward eddy, makes the fine powder carried in flue gas
Hard hit and turbulent closure scheme occur for heavy metal and suspended particle in dirt and waste water, and rapid coalescence is at bulky grain.Coalescence
The specific resistance of bulky grain is substantially reduced, and is easier to charged, is easily captured by deduster two, is realized the high-effective dust-removing of subparticle, burnt
Change waste water treatment process is simply ingenious, and equipment cost is lower, and swirling flow atomizing coking wastewater coalescence dedusting utilizes high-temperature flue gas waste heat
The evaporating completely for realizing coking wastewater, is not required to additional evaporation energy consumption, is more conducive to energy conservation and environmental protection.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
In figure: 1, deduster one, 2, pipeline, 3, SCR reactor, 4, air compressor, 5, water pump, 6, coking wastewater pond,
7, deduster two, 8, air-introduced machine, 9, coke oven chimney, 10, coke oven flue, 11, desulfurizing tower, 12, spray head.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Embodiment 1:
A kind of Coking Plant Wastewater zero-emission concentrated water processing system and its processing method, including coke oven flue 10, the coke oven
The end of flue 10 is connected with coke oven chimney 9, and the side of the coke oven flue 10 is connected with desulfurizing tower 11 by pipeline 2, described
Desulfurizing tower 11 is connected with deduster 1 by pipeline 2, and the deduster 1 is connected with SCR reactor 3 by pipeline 2, described
SCR reactor 3 is connected with deduster 27 by pipeline 2, and the deduster 27 is connected with coke oven chimney 9 by pipeline 2, described
Spray head 12 is provided in pipeline 2 between SCR reactor 3 and deduster 27, the spray head 12 connects free on the outside of pipeline 2
Air compressor 4 and coking wastewater pump 5, are provided with air-introduced machine 8 at the pipeline 2 between the deduster 27 and coke oven chimney 9.
A kind of Coking Plant Wastewater zero-emission concentrated water treatment method, comprising the following steps:
Step 1: the flue gas in coke oven flue 10 enters desulfurizing tower 11 and carries out dry desulfurization；
Step 2: the flue gas after desulfurization is handled through pipeline 2 into deduster 1；
Step 3: flue gas enters SCR reactor 3 after the processing of deduster 1 and carries out denitration；Biochemical treatment will be passed through simultaneously
The pipe to coke oven flue gas after desulphurization denitration is sent with the coking concentrated water water pump 5 being stored in coking wastewater pond 6 after film process
It is through the compressed air in air compressor 4 that coking concentrated water is atomization in pipeline 2 through atomizer 12 in road 2；
Step 4: the flue gas after denitration process evaporates the atomization waste water sprayed into pipeline 2, and the impurities in water that gives up is with solids
Form and ash enter deduster 27 with flue gas under the action of air-introduced machine 8 together, are captured by deduster 27, with grey outlet；
Step 5: water vapour enters coke oven chimney 9 after smoke temperature is fallen to a certain temperature and discharges.
Embodiment 2:
A kind of Coking Plant Wastewater zero-emission concentrated water processing system and its processing method, including coke oven flue 10, the coke oven
The end of flue 10 is connected with coke oven chimney 9, and the side of the coke oven flue 10 is connected with desulfurizing tower 11 by pipeline 2, described
Desulfurizing tower 11 is connected with deduster 1 by pipeline 2, and the deduster 1 is connected with SCR reactor 3 by pipeline 2, described
SCR reactor 3 is connected with deduster 27 by pipeline 2, and the deduster 27 is connected with coke oven chimney 9 by pipeline 2, described
Spray head 12 is provided in pipeline 2 between SCR reactor 3 and deduster 27, the spray head 12 connects free on the outside of pipeline 2
Air compressor 4 and coking wastewater pump 5, are provided with air-introduced machine 8, institute at the pipeline 2 between the deduster 27 and coke oven chimney 9
The end that draws water for stating coking wastewater pump 5 is connected with coking wastewater pond 6.
A kind of Coking Plant Wastewater zero-emission concentrated water treatment method, comprising the following steps:
Step 1: the flue gas in coke oven flue 10 enters desulfurizing tower 11 and carries out dry desulfurization；
Step 2: the flue gas after desulfurization is handled through pipeline 2 into deduster 1；
Step 3: flue gas enters SCR reactor 3 after the processing of deduster 1 and carries out denitration；Biochemical treatment will be passed through simultaneously
The pipe to coke oven flue gas after desulphurization denitration is sent with the coking concentrated water water pump 5 being stored in coking wastewater pond 6 after film process
It is through the compressed air in air compressor 4 that coking concentrated water is atomization in pipeline 2 through atomizer 12 in road 2；
Step 4: the flue gas after denitration process evaporates the atomization waste water sprayed into pipeline 2, and the impurities in water that gives up is with solids
Form and ash enter deduster 27 with flue gas under the action of air-introduced machine 8 together, are captured by deduster 27, with grey outlet；
Step 5: water vapour enters coke oven chimney 9 after smoke temperature is fallen to a certain temperature and discharges.
Embodiment 3:
A kind of Coking Plant Wastewater zero-emission concentrated water processing system and its processing method, including coke oven flue 10, the coke oven
The end of flue 10 is connected with coke oven chimney 9, and the side of the coke oven flue 10 is connected with desulfurizing tower 11 by pipeline 2, described
Desulfurizing tower 11 is connected with deduster 1 by pipeline 2, and the deduster 1 is connected with SCR reactor 3 by pipeline 2, described
SCR reactor 3 is connected with deduster 27 by pipeline 2, and the deduster 27 is connected with coke oven chimney 9 by pipeline 2, described
Spray head 12 is provided in pipeline 2 between SCR reactor 3 and deduster 27, the spray head 12 connects free on the outside of pipeline 2
Air compressor 4 and coking wastewater pump 5, are provided with air-introduced machine 8, institute at the pipeline 2 between the deduster 27 and coke oven chimney 9
The end that draws water for stating coking wastewater pump 5 is connected with coking wastewater pond 6, and the spray head 12 is atomizer 12.
A kind of Coking Plant Wastewater zero-emission concentrated water treatment method, comprising the following steps:
Step 1: the flue gas in coke oven flue 10 enters desulfurizing tower 11 and carries out dry desulfurization；
Step 2: the flue gas after desulfurization is handled through pipeline 2 into deduster 1；
Step 3: flue gas enters SCR reactor 3 after the processing of deduster 1 and carries out denitration；Biochemical treatment will be passed through simultaneously
The pipe to coke oven flue gas after desulphurization denitration is sent with the coking concentrated water water pump 5 being stored in coking wastewater pond 6 after film process
It is through the compressed air in air compressor 4 that coking concentrated water is atomization in pipeline 2 through atomizer 12 in road 2；
Step 4: the flue gas after denitration process evaporates the atomization waste water sprayed into pipeline 2, and the impurities in water that gives up is with solids
Form and ash enter deduster 27 with flue gas under the action of air-introduced machine 8 together, are captured by deduster 27, with grey outlet；
Step 5: water vapour enters coke oven chimney 9 after smoke temperature is fallen to a certain temperature and discharges.
Embodiment 4:
A kind of Coking Plant Wastewater zero-emission concentrated water processing system and its processing method, including coke oven flue 10, the coke oven
The end of flue 10 is connected with coke oven chimney 9, and the side of the coke oven flue 10 is connected with desulfurizing tower 11 by pipeline 2, described
Desulfurizing tower 11 is connected with deduster 1 by pipeline 2, and the deduster 1 is connected with SCR reactor 3 by pipeline 2, described
SCR reactor 3 is connected with deduster 27 by pipeline 2, and the deduster 27 is connected with coke oven chimney 9 by pipeline 2, described
Spray head 12 is provided in pipeline 2 between SCR reactor 3 and deduster 27, the spray head 12 connects free on the outside of pipeline 2
Air compressor 4 and coking wastewater pump 5, are provided with air-introduced machine 8, institute at the pipeline 2 between the deduster 27 and coke oven chimney 9
The end that draws water for stating coking wastewater pump 5 is connected with coking wastewater pond 6, and the spray head 12 is atomizer 12, and the spray head 12 is arranged
In the middle position of pipeline 2, the quantity of the spray head 12 at least one.
A kind of Coking Plant Wastewater zero-emission concentrated water treatment method, comprising the following steps:
Step 1: the flue gas in coke oven flue 10 enters desulfurizing tower 11 and carries out dry desulfurization；
Step 2: the flue gas after desulfurization is handled through pipeline 2 into deduster 1；
Step 3: flue gas enters SCR reactor 3 after the processing of deduster 1 and carries out denitration；Biochemical treatment will be passed through simultaneously
The pipe to coke oven flue gas after desulphurization denitration is sent with the coking concentrated water water pump 5 being stored in coking wastewater pond 6 after film process
It is through the compressed air in air compressor 4 that coking concentrated water is atomization in pipeline 2 through atomizer 12 in road 2；
Step 4: the flue gas after denitration process evaporates the atomization waste water sprayed into pipeline 2, and the impurities in water that gives up is with solids
Form and ash enter deduster 27 with flue gas under the action of air-introduced machine 8 together, are captured by deduster 27, with grey outlet；
Step 5: water vapour enters coke oven chimney 9 after smoke temperature is fallen to a certain temperature and discharges.
Embodiment 5:
A kind of Coking Plant Wastewater zero-emission concentrated water processing system and its processing method, including coke oven flue 10, the coke oven
The end of flue 10 is connected with coke oven chimney 9, and the side of the coke oven flue 10 is connected with desulfurizing tower 11 by pipeline 2, described
Desulfurizing tower 11 is connected with deduster 1 by pipeline 2, and the deduster 1 is connected with SCR reactor 3 by pipeline 2, described
SCR reactor 3 is connected with deduster 27 by pipeline 2, and the deduster 27 is connected with coke oven chimney 9 by pipeline 2, described
Spray head 12 is provided in pipeline 2 between SCR reactor 3 and deduster 27, the spray head 12 connects free on the outside of pipeline 2
Air compressor 4 and coking wastewater pump 5, are provided with air-introduced machine 8, institute at the pipeline 2 between the deduster 27 and coke oven chimney 9
The end that draws water for stating coking wastewater pump 5 is connected with coking wastewater pond 6, and the spray head 12 is atomizer 12, and the spray head 12 is arranged
In the middle position of pipeline 2, the quantity of the spray head 12 at least one, the air-introduced machine 8 and pipeline 2 are tightly connected.
A kind of Coking Plant Wastewater zero-emission concentrated water treatment method, comprising the following steps:
Step 1: the flue gas in coke oven flue 10 enters desulfurizing tower 11 and carries out dry desulfurization；
Step 2: the flue gas after desulfurization is handled through pipeline 2 into deduster 1；
Step 3: flue gas enters SCR reactor 3 after the processing of deduster 1 and carries out denitration；Biochemical treatment will be passed through simultaneously
The pipe to coke oven flue gas after desulphurization denitration is sent with the coking concentrated water water pump 5 being stored in coking wastewater pond 6 after film process
It is through the compressed air in air compressor 4 that coking concentrated water is atomization in pipeline 2 through atomizer 12 in road 2；
Step 4: the flue gas after denitration process evaporates the atomization waste water sprayed into pipeline 2, and the impurities in water that gives up is with solids
Form and ash enter deduster 27 with flue gas under the action of air-introduced machine 8 together, are captured by deduster 27, with grey outlet；
Step 5: water vapour enters coke oven chimney 9 after smoke temperature is fallen to a certain temperature and discharges.
Embodiment 6:
A kind of Coking Plant Wastewater zero-emission concentrated water processing system and its processing method, including coke oven flue 10, the coke oven
The end of flue 10 is connected with coke oven chimney 9, and the side of the coke oven flue 10 is connected with desulfurizing tower 11 by pipeline 2, described
Desulfurizing tower 11 is connected with deduster 1 by pipeline 2, and the deduster 1 is connected with SCR reactor 3 by pipeline 2, described
SCR reactor 3 is connected with deduster 27 by pipeline 2, and the deduster 27 is connected with coke oven chimney 9 by pipeline 2, described
Spray head 12 is provided in pipeline 2 between SCR reactor 3 and deduster 27, the spray head 12 connects free on the outside of pipeline 2
Air compressor 4 and coking wastewater pump 5, are provided with air-introduced machine 8, institute at the pipeline 2 between the deduster 27 and coke oven chimney 9
The end that draws water for stating coking wastewater pump 5 is connected with coking wastewater pond 6, and the spray head 12 is atomizer 12, and the spray head 12 is arranged
In the middle position of pipeline 2, the quantity of the spray head 12 at least one, the air-introduced machine 8 and pipeline 2 are tightly connected, described
The air inducing direction of air-introduced machine 8 is that deduster 27 arrives 9 direction of coke oven chimney.
A kind of Coking Plant Wastewater zero-emission concentrated water treatment method, comprising the following steps:
Step 1: the flue gas in coke oven flue 10 enters desulfurizing tower 11 and carries out dry desulfurization；
Step 2: the flue gas after desulfurization is handled through pipeline 2 into deduster 1；
Step 3: flue gas enters SCR reactor 3 after the processing of deduster 1 and carries out denitration；Biochemical treatment will be passed through simultaneously
The pipe to coke oven flue gas after desulphurization denitration is sent with the coking concentrated water water pump 5 being stored in coking wastewater pond 6 after film process
It is through the compressed air in air compressor 4 that coking concentrated water is atomization in pipeline 2 through atomizer 12 in road 2；
Step 4: the flue gas after denitration process evaporates the atomization waste water sprayed into pipeline 2, and the impurities in water that gives up is with solids
Form and ash enter deduster 27 with flue gas under the action of air-introduced machine 8 together, are captured by deduster 27, with grey outlet；
Step 5: water vapour enters coke oven chimney 9 after smoke temperature is fallen to a certain temperature and discharges.
Usefulness: the present invention is atomized coalescence aerodynamic field by construction flue inward eddy, makes the fine powder carried in flue gas
Hard hit and turbulent closure scheme occur for heavy metal and suspended particle in dirt and waste water, and rapid coalescence is at bulky grain.Coalescence
The specific resistance of bulky grain is substantially reduced, and is easier to charged, is easily captured by deduster 27, is realized the high-effective dust-removing of subparticle, burnt
Change waste water treatment process is simply ingenious, and equipment cost is lower, and swirling flow atomizing coking wastewater coalescence dedusting utilizes high-temperature flue gas waste heat
The evaporating completely for realizing coking wastewater, is not required to additional evaporation energy consumption, is more conducive to energy conservation and environmental protection.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of Coking Plant Wastewater zero-emission concentrated water processing system, including coke oven flue, which is characterized in that the coke oven flue
End is connected with coke oven chimney, and the side of the coke oven flue is connected with desulfurizing tower by pipeline, and the desulfurizing tower passes through pipeline
It is connected with deduster one, the deduster one is connected with SCR reactor by pipeline, and the SCR reactor is connected by pipeline
There is deduster two, the deduster two-way piping is connected with coke oven chimney, the pipe between the SCR reactor and deduster two
Spray head is provided in road, the spray head is connected with air compressor and coking wastewater pump, two He of deduster on the outside of pipeline
Air-introduced machine is provided at pipeline between coke oven chimney.
2. a kind of Coking Plant Wastewater zero-emission concentrated water processing system according to claim 1, which is characterized in that the coking
The end that draws water of waste water pump is connected with coking wastewater pond.
3. a kind of Coking Plant Wastewater zero-emission concentrated water processing system according to claim 2, which is characterized in that the spray head
For atomizer.
4. a kind of Coking Plant Wastewater zero-emission concentrated water processing system according to claim 3, which is characterized in that the spray head
The middle position of pipeline is set, the quantity of the spray head at least one.
5. a kind of Coking Plant Wastewater zero-emission concentrated water processing system according to claim 4, which is characterized in that the air inducing
Machine and pipeline are tightly connected.
6. a kind of Coking Plant Wastewater zero-emission concentrated water processing system according to claim 5, which is characterized in that the air inducing
The air inducing direction of machine is that deduster two arrives coke oven chimney direction.
7. a kind of Coking Plant Wastewater zero-emission concentrated water treatment method as described in any one in claim 1-6, feature exist
In: the following steps are included:
Step 1: the flue gas in coke oven flue enters desulfurizing tower and carries out dry desulfurization；
Step 2: the flue gas after desulfurization enters deduster one through pipeline and is handled；
Step 3: flue gas enters SCR reactor after the processing of deduster one and carries out denitration；At simultaneously will be by biochemical treatment and film
The coking concentrated water being stored in coking wastewater pond after reason is pumped to coke oven flue gas in the pipeline after desulphurization denitration with water, through sky
Compressed air in air compressor is atomization in pipeline through atomizer by coking concentrated water；
Step 4: the flue gas after denitration process evaporates the atomization waste water sprayed into pipeline, and the impurities in water that gives up is with solid form
Enter deduster two under the action of air-introduced machine with flue gas together with ash, is captured by deduster two, with grey outlet；
Step 5: water vapour enters coke oven smoke stack emission after smoke temperature is fallen to a certain temperature.
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