CN109458622A - A kind of acrylonitrile salty organic waste liquid and burned waste gas environmental protection and energy saving exhaust system - Google Patents
A kind of acrylonitrile salty organic waste liquid and burned waste gas environmental protection and energy saving exhaust system Download PDFInfo
- Publication number
- CN109458622A CN109458622A CN201811350958.8A CN201811350958A CN109458622A CN 109458622 A CN109458622 A CN 109458622A CN 201811350958 A CN201811350958 A CN 201811350958A CN 109458622 A CN109458622 A CN 109458622A
- Authority
- CN
- China
- Prior art keywords
- gas
- waste liquid
- acrylonitrile
- waste
- flue gas
- 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
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- 239000007788 liquid Substances 0.000 title claims abstract description 58
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000010815 organic waste Substances 0.000 title claims abstract description 26
- 239000002912 waste gas Substances 0.000 title claims abstract description 22
- 230000007613 environmental effect Effects 0.000 title claims abstract description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000003546 flue gas Substances 0.000 claims abstract description 51
- 239000007789 gas Substances 0.000 claims abstract description 45
- 239000002699 waste material Substances 0.000 claims abstract description 44
- 239000002918 waste heat Substances 0.000 claims abstract description 31
- 238000009413 insulation Methods 0.000 claims abstract description 26
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 150000003839 salts Chemical class 0.000 claims description 33
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 229910021529 ammonia Inorganic materials 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 15
- 239000000446 fuel Substances 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000010808 liquid waste Substances 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000908 ammonium hydroxide Substances 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 4
- 238000009688 liquid atomisation Methods 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 239000004071 soot Substances 0.000 claims description 2
- -1 Alkene nitrile Chemical class 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 17
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 13
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 239000003517 fume Substances 0.000 abstract description 2
- 150000002894 organic compounds Chemical class 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 238000010410 dusting Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000002306 biochemical method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000013517 stratification Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- XLJMAIOERFSOGZ-UHFFFAOYSA-N cyanic acid Chemical compound OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009279 wet oxidation reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005008 domestic process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/36—Water and air preheating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/008—Incineration of waste; Incinerator constructions; Details, accessories or control therefor adapted for burning two or more kinds, e.g. liquid and solid, of waste being fed through separate inlets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/12—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating using gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/10—Supplementary heating arrangements using auxiliary fuel
- F23G2204/103—Supplementary heating arrangements using auxiliary fuel gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/10—Liquid waste
- F23G2209/101—Waste liquor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/10—Catalytic reduction devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/32—Direct CO2 mitigation
Abstract
The invention discloses a kind of acrylonitrile salty organic waste liquid and burned waste gas environmental protection and energy saving exhaust system, meet that waste liquid, exhaust-gas treatment be innoxious, environmental protection and energy saving requirement of minimizing by the processes such as high temperature incineration, waste heat recycling, high temperature and low-temperature denitration, bag-type dusting.This system mainly includes insulation incinerator, membrane wall waste heat boiler, air preheater, economizer, SNCR and SCR denitration device, bag filter, chimney etc..Containing a variety of toxic organic compounds such as acrylonitrile, acetonitrile, hydrogen cyanide in acrylonitrile waste, exhaust gas, complete oxidation, decomposition, generate CO at high temperature2、NOx、N2, heat is recycled by waste heat boiler, after the low-temperature catalyzed denitration of SCR device, fume afterheat is to be discharged into atmosphere by chimney again after so that flue gas is reached national standard by dedusting operation after air preheater recycles.The present invention has the characteristics that manufacturing process is simple, system operational safety is stable, can be widely applied to the industries such as chemical industry, papermaking, automobile tire manufacture.
Description
Technical field
The present invention relates to the high salty organic waste liquid and exhaust gas that generate during production acrylonitrile are carried out burning environmentally friendly section
The system that can be discharged, belongs to energy conservation and environmental protection.Specially a kind of acrylonitrile salty organic waste liquid and burned waste gas environmental protection and energy saving
Exhaust system.
Background technique
Acrylonitrile is a kind of important industrial chemicals, is the important monomer of synthetic fibers, synthetic rubber and synthetic resin.It is existing
Stage production acrylonitrile mostly uses greatly propylene ammmoxidation process, and the method needs to form aqueous solution, aqueous solution warp during the preparation process
Extraction tower isolates acetonitrile, removes hydrogen cyanide in dehydrogenation cyanic acid tower, then obtain acrylonitrile product through dehydration, rectifying.But it makes
Can be generated during standby largely containing a small amount of acrylonitrile, acetonitrile, hydrogen cyanide waste liquid.Acrylonitrile, acetonitrile have certain toxicity,
And hydrogen cyanide has severe toxicity, if the destruction ecological balance is directly damaged so this part waste liquid direct emission will cause environmental pollution
Human health.Therefore the processing method for finding a kind of rationally efficient acrylonitrile waste, to promotion environmental protection and petrochemical industry
Sustainable development is of great significance.
Currently, the domestic method for handling above-mentioned waste liquid mainly has biochemical method, oxidizing process etc..Although biochemical method investment is smaller,
But it is generally very high for the COD concentration of acrylonitrile salty organic waste liquid, treated, and that exhaust gas is difficult is up to standard, so that biochemical method
It is also difficult to implement.Oxidizing process is divided into the oxygen-enriched oxidizing process of anaerobism and wet oxidation process again.Wet oxidation process is cryogenic high pressure oxygenation oxygen
Change method, in 300 DEG C or so pressure, oxygenation and catalyst at 10-20.0MPa carry out catalysis oxygen to acrylonitrile waste to general temperature
Change, not only invest larger, except operating cost is also very high, there is also some potential safety problemss.And such as patent No.
The patent of CN103641277A proposes a kind of " processing method of acrylonitrile waste ", is exactly that anaerobism in above-mentioned oxidizing process is oxygen-enriched
Oxidizing process, the process flow which uses are as follows: short-cut nitrification and denitrification-anoxic-precipitating-catalysis oxidation-aeration-life
Object filter tank, multiple steps come achieve the purpose that handle acrylonitrile waste.The advantages of invention, is: COD, ammonia nitrogen removal rate compare
Height, the water body discharged after processing can reach GB8978-1996 first discharge standard.And it has a drawback in that treatment process and compares
It is more, and need that a large amount of carbon source is added into anoxic pond, in order to provide carbon-nitrogen ratio needed for enough denitrifications, cost of material compared with
Height, reaction time is long, and reaction efficiency is not high, and entire reaction process is cumbersome, and system operation cost is more higher.
Also there are many producers in the country and are handled the high salty organic waste liquid generated during acrylonitrile using incineration method, still
The phenomenon that operation is all very unsuccessful, incinerator burner hearth sodium salt wall built-up is extremely serious, and incinerator furnace bottom sodium salt accumulated plugging causes to burn
Stop one week within three days to clear up, waste heat boiler dust stratification blocks especially severe, and not only high fume temperature smashes downstream component, but also boiler
Dust stratification is extremely difficult to clear up, it has to the dust stratification of cleaning waste heat boiler, most liquid waste treatment systems are brought using high pressure water
It is highly unstable, unreliable and difficult in maintenance to run.In addition to this, due in acrylonitrile waste gas, waste liquid organic matter contain
CN-Substance belongs to fuel type organic nitrogen, and easily conversion generates NO during high-temp combustionXPollutant, if processing is not thorough, no
Meet or be extremely difficult to national environmental standard requirement.
Summary of the invention
The purpose of the present invention is: in view of the above-mentioned defects in the prior art, a kind of danger wastes are provided and destroy that rate is high, waste heat by fire
Recovery efficiency height, simple process, acrylonitrile salty organic waste liquid easy to maintain and burned waste gas environmental protection and energy saving exhaust system.
In order to achieve the above object, providing following technical scheme: a kind of acrylonitrile salty organic waste liquid and burned waste gas ring
Protect energy saving exhaust system, including waste liquid and exhaust gas pretreatment system, waste liquid and exhaust gas feeding system, waste liquid and burned waste gas system
The subsystems such as system, high-temperature flue gas residual neat recovering system and gas cleaning qualified discharge environment-friendly disposal system；
The waste liquid and exhaust gas pretreatment system include waste liquid surge tank and its auxiliary device, off-gas buffer tank and its attached set
It is standby；Waste liquid and exhaust gas feeding system include waste liquid booster pump and atomizing lance, exhaust gas blower and gas flare；It is described useless
Liquid incineration system includes insulation incinerator and its auxiliary device；High-temperature flue gas residual neat recovering system mainly includes membrane wall waste heat pot
Furnace, air preheater, economizer and its auxiliary device；Gas cleaning qualified discharge environment-friendly disposal system mainly includes more than membrane wall
The main bodys such as the high temperature SNCR denitration device, low temperature SCR denitration device, bag filter, the chimney that are arranged in the cooling chamber of heat boiler
Equipment.
The acrylonitrile salty organic waste liquid is sent into the Waste liquid atomization at the top of insulation incinerator after the pressurization of waste liquid booster pump
Insulation incinerator is sprayed into after spray gun, is insulated incinerator inner lining refractory and thermal insulation material, guarantees the organic principle quilt in waste liquid
It is fully oxidized under the high temperature conditions, decompose, the salt in waste liquid is heated at high temperature becomes molten state, and by under insulation incinerator
Portion is flowed out in a liquid-like manner, cooling into the twin shaft cooler for being mounted on insulation incinerator bottom, and scraper plate slagging-off is fallen into after cooling
Machine continues to cool down and be sent into workshop processing；The acrylonitrile organic exhaust gas is sent into after booster fan pressurizes is arranged in insulation burning
The gas burner interface on furnace top, by gas burner according to flue gas flow direction at burner hearth center cross-sectional with quadrangle tangential circle
Pattern burn in burner hearth.
High-temperature flue gas after burning enters membrane wall waste heat boiler, comes into full contact with heat exchange with boiler water, generates saturated vapor
The drum above boiler is risen to, membrane wall waste heat boiler and drum form natural convection loop；The drum and gas-distributing cylinder connect
It connects, the softened water of supplement successively enters drum after thermal deaerator, boiler feed pump and economizer.Sufficiently after heat exchange
Flue gas enters in the air preheater that waste heat boiler is arranged below, and combustion air is sent into air preheater by air blower, with flue gas
After heat exchange, sprays into the gas burner on insulation incinerator top and burn together with auxiliary fuel.It is set after the air preheater
Warm SCR denitration device is set low, in order to guarantee denitration effect, several groups ammonia is installed in the flue before low temperature SCR denitration device
The lower part of gas jets, ammonia nozzle connects tank used for storing ammonia, and ammonia-spraying grid is arranged on spraying the flue after ammonia point, mixes with ammonia
Uniform flue gas enters in low temperature SCR denitration device, under the action of low-temperature denitration catalyst, completes removing NOxReaction.Cigarette
Gas is after the discharge of low temperature SCR denitration device successively by five groups of convection banks in economizer, five groups of all light pipes pair of tube bank
Flowing bundle.The flue gas being discharged from economizer successively passes through bag filter, air-introduced machine, and atmosphere is finally drained into after chimney
In.
It is further improved ground, the furnace wall of the insulation incinerator is poured using the High-Alumina fire resisting of high temperature-resistant acid-resistant caustic corrosion
Material feeding pours, and is insulated incinerator top layout liquid waste spray gun, is atomized by compressed air and sprays into burner hearth.It is insulated on incinerator
Portion arranges two layers of gas burner along furnace height direction for each two meters or so down from top, and every layer of gas burner is in burner hearth
Flue gas flow direction is arranged with the pattern of quadrangle tangential circle according to section of burner hearth；Acrylonitrile waste and auxiliary fuel natural gas pass through combustion gas
Burner burns.
It is further improved ground, the waste heat boiler is along flue gas traveling flow setting three-level cooling chamber, preceding two-stage cooling chamber
Do not arrange convection bank, wherein the urea of the middle part arrangement SNCR denitration of first order cooling chamber or the ammonium hydroxide spout of 20% concentration,
Third level cooling chamber arranges hanging panel convection bank；And steam sootblower is set in cooling chamber position, it is periodically heated to cooling chamber
Face carries out soot blowing, prevents molten state salt from bonding furnace wall, influences heat transfer efficiency.When entering first order cooling chamber due to high-temperature flue gas
Temperature is very high, and salt entrained by flue gas exists with molten state, so molten salt pool is arranged in the first cooling chamber lower part, and in fused salt
Afterburning burner is set in pond, so that the temperature in molten salt pool is consistently higher than 100 DEG C of fusing point of salt in waste liquid or more, to guarantee
Fuse salt can be very good to flow out from fused salt bottom of pond portion, cooling into twin shaft cooler, and it is cold to later fall into scraper slag removing machine continuation
But and it is sent into workshop.
With being further improved, steam outlet pipe road there are two setting on the gas-distributing cylinder, one of them connect with thermal deaerator,
Another connect with external gas utilization unit.
It is further improved ground, combustion air is sent into air preheater by the air blower, after flue gas heat exchange, is fired with auxiliary
Material, which is sprayed into together in the gas burner for being insulated incinerator top, to burn.
The technical measures that this system is taken include:
(1) acrylonitrile salty organic waste liquid is atomized using compressed air from roof of the furnace and is sprayed into furnace, by acrylonitrile organic waste
Gas and auxiliary fuel natural gas burn close to roof of the furnace side wall arrangement burner, i.e., so-called " top spray side burning " is hanged
Floating burning mode carries out waste liquid and burned waste gas.Simultaneously in order to improve efficiency of combustion, increase flue gas in burner hearth stroke, stop when
Between and increase flue gas disturbed in furnace, gas burner is according to flue gas flow direction by with quadrangle tangential circle at burner hearth center cross-sectional
Pattern burn in burner hearth.The suspension of " top spray side burning " is burned mode and is ensured in salty organic waste liquid and organic exhaust gas
Organic component thoroughly destroys by fire, while high-temperature flue gas is disturbed in furnace with the pattern of quadrangle tangential circle, and can be by the inorganic of molten condition
Salt is reunited, and is fallen into furnace bottom molten salt pool by gravity, is reduced powder inorganic salts and is brought posterior means into.(2) after being insulated incinerator
Membrane wall waste heat boiler is set, and most heats in recovered flue gas are used to generate steam and use by oneself or be incorporated to steam pipe for plant area
Net；Waste heat boiler uses membrane wall water pipe waste heat boiler form, and flue gas and membrane wall pipe form parallel baffled, avoids blocking pot
Furnace.(3) arrange that tubular air preheater, combustion air are sent to tubular air preheater, air by air blower after waste heat boiler
It walks in pipe, flue gas is walked outside pipe, and flue gas and pipe effectively increase the coefficient of heat transfer at transversal flow.Air after absorbing flue gas heat
Temperature increases, and insulation incinerator burning is injected into after mixing with the auxiliary fuel in burner, can greatly reduce auxiliary fuel and disappear
Consumption.(4) acrylonitrile, acetonitrile, most nitrogens in hydrogen cyanide are oxidized at a high temperature of being insulated in incinerator
NOX, so not only setting spray urea or 20% ammonium hydroxide carry out high temperature denitration to this system in the middle part of the first cooling chamber of waste heat boiler
SNCR denitration device is provided with low temperature SCR denitration device also before flue gas enters bag filter, is used in sufficiently removing flue gas
NOX, it is ensured that the nitrous oxides concentration in flue gas meets national standard emission request.(5) in view of high-temperature flue gas enters first
Temperature is very high when grade cooling chamber, and the salt carried in flue gas exists with molten state, so in first cooling chamber lower part
Molten salt pool is set, and afterburning burner is installed in the molten salt pool, the temperature in molten salt pool is made to be consistently higher than salt in waste liquid
100 DEG C of fusing point or more of class guarantee that fuse salt can be very good to flow into twin shaft cooler from fused salt bottom of pond portion and are cooled down, so
Water-cooled scraper slag removing machine is fallen into afterwards to continue to cool down together with the salt that incinerator bottom is fallen into using same measure and be sent into vehicle
Between.
The present invention can be by the toxic organic compound in the salty organic waste liquid and exhaust gas that generate in acrylonitrile industrialized production
Decomposed through high temperature incineration complete oxidation, and carried out harmless treatment for decomposition product, dispose waste liquid, exhaust gas while
Thermal energy can also be recycled and generate steam or hot water, the energy has both been saved, avoided secondary pollution, and reached reduction waste discharge
Environmentally friendly purpose.
Detailed description of the invention
Fig. 1 is main equipment distribution map of the invention；
Fig. 2 is the top view of this salty organic waste liquid and burned waste gas exhaust system；
Fig. 3 is the process total figure of this salty organic waste liquid and burned waste gas exhaust system；
It is as shown in the figure: 1, to be insulated incinerator；2, membrane wall waste heat boiler；3, air preheater；4, low temperature SCR denitration device；5,
Economizer；6, bag filter；7, air-introduced machine；8, chimney；9, tank used for storing ammonia；10, liquid waste spray gun；11, gas burner；12,
Drum；13, sub-cylinder；14, air blower；15, boiler feed pump；16, thermal deaerator；17, ammonia-spraying grid；18, low temperature is de-
Denox catalyst；19, molten salt pool；20, twin shaft cooler；21, water-cooled scraper slag removing machine；22, afterburning burner；23, high temperature
SNCR denitration device.
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.Obviously, described embodiment is only the preferred embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of acrylonitrile salty organic waste liquid and burned waste gas environmental protection and energy saving exhaust system as shown in FIG. 1 to FIG. 3, including
Waste liquid and exhaust gas pretreatment system, waste liquid and exhaust gas feeding system, waste liquid and burned waste gas system, high-temperature flue gas waste heat recycling system
System and gas cleaning qualified discharge environment-friendly disposal system；Liquid waste incineration system mainly includes insulation incinerator 1, membrane wall waste heat pot
The equipment such as furnace 2, air preheater 3, SCR denitration device 4, economizer 5, bag filter 6, air-introduced machine 7, chimney 8, the propylene
Penetrating is exhausted after nitrile salty organic waste liquid is sent into the Waste liquid atomization spray gun 10 at 1 top of insulation incinerator after the pressurization of waste liquid booster pump 9
Thermal incinerator 1,1 inner lining refractory of insulation incinerator and thermal insulation material guarantee that the organic matter in waste liquid is complete by high temperature
Oxidation is decomposed, and the salt in waste liquid is heated becomes molten state at high temperature, and in a liquid-like manner from insulation 1 lower part of incinerator
Outflow, it is cooling into the twin shaft cooler 20 for being arranged in insulation 1 bottom of incinerator, fallen into after cooling scraper slag removing machine 21 continue it is cold
But and it is sent into workshop processing；The acrylonitrile organic exhaust gas is sent into after booster fan CO2 pressurization to be arranged on insulation incinerator 1
11 interface of gas burner in portion, by gas burner 11 according to flue gas flow direction at burner hearth center cross-sectional with quadrangle tangential circle
Pattern burn in burner hearth；High-temperature flue gas after burning enters membrane wall waste heat boiler 2, wherein high-temperature flue gas and pot
The heat exchange of furnace water, the generation saturated vapor enter the drum 12 above boiler；Setting three-level is cold in the membrane wall waste heat boiler 2
But room, wherein arranging the urea or 20% concentration of SNCR denitration in the middle part of the first order cooling chamber of membrane wall water pipe waste heat boiler 2
Ammonium hydroxide spout, to high-temperature flue gas carry out high temperature denitration；Membrane wall waste heat boiler 2 and drum 12 form natural convection loop, vapour
Packet 12 is connect with gas-distributing cylinder 13, and the softened water that system is added successively passes through thermal deaerator 16, boiler feed pump 15, economizer
Enter drum 12 after 5；Steam outlet pipe road there are two setting on the gas-distributing cylinder 13, one of them connect with thermal deaerator 16, separately
One connect with external gas utilization unit；Flue gas after heat exchange enters in air preheater 3, and combustion air is sent into empty by air blower 14
Air preheater 3 after flue gas heat exchange, then is sprayed into the burner 11 for being insulated 1 top of incinerator together with auxiliary fuel and is burnt；?
Low temperature SCR denitration device 4 is set after air preheater 3, the flue before low temperature SCR denitration device 4 is equipped with ammonia nozzle,
The lower part for spraying ammonia point connects tank used for storing ammonia 9, and ammonia-spraying grid 17 is arranged after spraying ammonia point, is uniformly mixed flue gas with ammonia, with
Flue gas enters in low temperature SCR denitration device 4 afterwards, under the action of low-temperature denitration catalyst 18, completes removing NOXReaction；Cigarette
Gas enters economizer 5 after the discharge of low temperature SCR denitration device 4, and flue gas enters bag filter 6 after the discharge of economizer 5, from cloth
The flue gas that bag dust collector 6 is discharged drains into atmosphere after being finally introduced into chimney 8 by air-introduced machine 7.
In the present invention unless specifically defined or limited otherwise, the terms such as term " installation ", " setting ", " connection " are answered
It is interpreted broadly, such as may be a fixed connection, may be a detachable connection, or is integral；It can be mechanical connection, it can also
To be electrical connection；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary
Or the interaction relationship of two elements unless otherwise restricted clearly for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term in the present invention is understood as the case may be.
While preferred embodiments of the invention have been illustrated and described, for the ordinary skill in the art,
It is understood that a variety of to the progress of these embodiments can change without departing from the principles and spirit of the present invention, modify,
Replacement and variant, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of acrylonitrile salty organic waste liquid and burned waste gas environmental protection and energy saving exhaust system, by waste liquid and exhaust gas pretreatment system
System, waste liquid and exhaust gas feeding system, waste liquid and burned waste gas system, high-temperature flue gas residual neat recovering system and gas cleaning row up to standard
It puts environment-friendly disposal system to be formed, including insulation incinerator (1), membrane wall waste heat boiler (2), air preheater (3), low temperature
The equipment such as SCR denitration device (4), economizer (5), bag filter (6), air-introduced machine (7), chimney (8), it is characterised in that: third
Alkene nitrile salty organic waste liquid is sent into the Waste liquid atomization spray gun (10) at the top of insulation incinerator (1) after waste liquid booster pump (9) pressurize
Insulation incinerator (1), insulation incinerator (1) inner lining refractory and thermal insulation material are sprayed into afterwards, are guaranteed organic in waste liquid
Object under high temperature environment complete oxidation, decompose, the salt in waste liquid is heated at high temperature becomes molten state, and from insulation incinerator
(1) lower part is flowed out in a liquid-like manner, cooling into the twin shaft cooler (20) for being arranged in insulation incinerator (1) bottom；Insulation is burnt
It burns furnace (1) and arranges membrane wall water pipe waste heat boiler (2) afterwards, in membrane wall water pipe waste heat boiler (2) high temperature flue gas and boiler water
Heat exchange, the saturated vapor of generation enter the drum (12) above boiler；Flue gas after heat exchange enters membrane wall water pipe waste heat boiler
(2) in the air preheater (3) being arranged afterwards；Low temperature SCR denitration device (4) is arranged in the air preheater (3) afterwards, in low temperature
Flue before SCR denitration device (4) is equipped with ammonia nozzle, spray ammonia point lower part connect tank used for storing ammonia (9), spray ammonia point it
Ammonia-spraying grid (17) are set on flue afterwards, the flue gas being uniformly mixed with ammonia enters in low temperature SCR denitration device (4), described
Low-temperature denitration catalyst (18) are filled in low temperature SCR denitration device (4)；Flue gas from low temperature SCR denitration device (4) be discharged after according to
The secondary flue gas by five groups of convection banks in economizer (5), being discharged from the economizer (5) enters bag filter (6), finally
The flue gas being discharged from bag filter (6) is introduced into chimney (8) and drained into atmosphere by air-introduced machine (7).
2. a kind of acrylonitrile salty organic waste liquid according to claim 1 and burned waste gas environmental protection and energy saving exhaust system,
Be characterized in that: the furnace wall of the insulation incinerator (1) is poured using High-Alumina acid-alkali-corrosive-resisting castable refractory resistant to high temperature
It forms；It is described insulation incinerator (1) top layout Waste liquid atomization spray gun (10), be insulated incinerator (1) top from top down
Each two meters or so are arranged two layers of gas burner (11) along furnace height direction, and flue gas flow direction is in burner hearth with the type of quadrangle tangential circle
Formula arranges every layer of gas burner (11) according to section of burner hearth, and acrylonitrile waste gas and auxiliary fuel natural gas are in gas burner
(11) burning in.
3. a kind of acrylonitrile salty organic waste liquid according to claim 1 and burned waste gas environmental protection and energy saving exhaust system,
Be characterized in that: the membrane wall water pipe waste heat boiler (2) sets gradually three-level cooling chamber along flue gas flow, it is contemplated that salt bearing liquid wastes
The bonding feature of salt after burning, first, second grade of larger radiation heating-surface of cooling chamber can allow the salt of molten condition in flue gas
Class is converted into solid salt, is convenient to clean, and only arranges hanging panel convection bank in third level cooling chamber, further cools down to flue gas；?
The ammonium hydroxide spray of the urea of arrangement SNCR denitration or 20% concentration in the middle part of the first order cooling chamber of membrane wall water pipe waste heat boiler (2)
Mouthful, high temperature denitration is carried out to high-temperature flue gas；Steam sootblower is installed in the position of cooling chamber, periodically to membrane wall waste heat boiler
(2) heating surface soot blowing.
4. a kind of acrylonitrile salty organic waste liquid according to claim 3 and burned waste gas environmental protection and energy saving exhaust system,
It is characterized in that: molten salt pool (19) being set in first cooling chamber lower part, and afterburning combustion is installed in the molten salt pool (19)
Burner (22) makes the temperature in molten salt pool (19) be consistently higher than 100 DEG C of fusing point of salt in waste liquid or more, guarantees that fuse salt is smooth
Ground flows into cooling in twin shaft cooler (20) from molten salt pool (19) bottom, later falls into scraper slag removing machine (21) and continues to cool down and send
Enter workshop.
5. a kind of acrylonitrile salty organic waste liquid according to claim 1 and burned waste gas environmental protection and energy saving exhaust system,
Be characterized in that: the membrane wall water pipe waste heat boiler (2) and drum (12) form natural convection loop, the drum (12) with point
Cylinder (13) connection, the softened water of addition is successively after thermal deaerator (16), boiler feed pump (15), economizer (5)
Into drum (12).
6. a kind of acrylonitrile salty organic waste liquid according to claim 5 and burned waste gas environmental protection and energy saving exhaust system,
Be characterized in that: steam outlet pipe road there are two setting on the gas-distributing cylinder (13), one of them connect with thermal deaerator (16), another
It is a to be connect with external gas utilization unit.
7. a kind of acrylonitrile salty organic waste liquid according to claim 1 and burned waste gas environmental protection and energy saving exhaust system,
Be characterized in that: combustion air is sent into air preheater (3) by air blower (14), after flue gas heat exchange, then together with auxiliary fuel
Spray into burning in the gas burner (11) on insulation incinerator (1) top.
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| CN201811350958.8A CN109458622B (en) | 2018-11-14 | 2018-11-14 | Environment-friendly energy-saving discharge system for incineration of acrylonitrile salt-containing organic waste liquid and waste gas |
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| CN201811350958.8A CN109458622B (en) | 2018-11-14 | 2018-11-14 | Environment-friendly energy-saving discharge system for incineration of acrylonitrile salt-containing organic waste liquid and waste gas |
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