CN115155192B - Purifying and discharging device for flue gas desulfurization and denitrification - Google Patents
Purifying and discharging device for flue gas desulfurization and denitrification Download PDFInfo
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- CN115155192B CN115155192B CN202210815386.6A CN202210815386A CN115155192B CN 115155192 B CN115155192 B CN 115155192B CN 202210815386 A CN202210815386 A CN 202210815386A CN 115155192 B CN115155192 B CN 115155192B
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- desulfurization
- denitrification
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 94
- 230000023556 desulfurization Effects 0.000 title claims abstract description 94
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000003546 flue gas Substances 0.000 title claims abstract description 24
- 238000007599 discharging Methods 0.000 title claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 48
- 238000001514 detection method Methods 0.000 claims abstract description 47
- 239000002245 particle Substances 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000005192 partition Methods 0.000 claims description 23
- 239000007921 spray Substances 0.000 claims description 16
- 230000001502 supplementing effect Effects 0.000 claims description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 8
- 239000008187 granular material Substances 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004202 carbamide Substances 0.000 claims description 6
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 6
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 6
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 239000002918 waste heat Substances 0.000 claims description 6
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 6
- 239000002250 absorbent Substances 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 5
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 4
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims description 3
- 239000005695 Ammonium acetate Substances 0.000 claims description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 3
- 239000005751 Copper oxide Substances 0.000 claims description 3
- -1 alkyl glyceryl ether Chemical compound 0.000 claims description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
- 229940043376 ammonium acetate Drugs 0.000 claims description 3
- 235000019257 ammonium acetate Nutrition 0.000 claims description 3
- 235000019270 ammonium chloride Nutrition 0.000 claims description 3
- VZTDIZULWFCMLS-UHFFFAOYSA-N ammonium formate Chemical compound [NH4+].[O-]C=O VZTDIZULWFCMLS-UHFFFAOYSA-N 0.000 claims description 3
- 229960000892 attapulgite Drugs 0.000 claims description 3
- RCMWGBKVFBTLCW-UHFFFAOYSA-N barium(2+);dioxido(dioxo)molybdenum Chemical compound [Ba+2].[O-][Mo]([O-])(=O)=O RCMWGBKVFBTLCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- 235000012255 calcium oxide Nutrition 0.000 claims description 3
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 229910000361 cobalt sulfate Inorganic materials 0.000 claims description 3
- 229940044175 cobalt sulfate Drugs 0.000 claims description 3
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 claims description 3
- 229910000431 copper oxide Inorganic materials 0.000 claims description 3
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 3
- 229960001763 zinc sulfate Drugs 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- UQYMPAFTBYDYCN-UHFFFAOYSA-N n'-[2-(dioctadecylamino)ethyl]ethane-1,2-diamine Chemical compound CCCCCCCCCCCCCCCCCCN(CCNCCN)CCCCCCCCCCCCCCCCCC UQYMPAFTBYDYCN-UHFFFAOYSA-N 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- JVXHQHGWBAHSSF-UHFFFAOYSA-L 2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate;hydron;iron(2+) Chemical compound [H+].[H+].[Fe+2].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O JVXHQHGWBAHSSF-UHFFFAOYSA-L 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 22
- 239000012535 impurity Substances 0.000 abstract description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 6
- 238000007667 floating Methods 0.000 abstract description 6
- 238000001179 sorption measurement Methods 0.000 description 11
- 239000010815 organic waste Substances 0.000 description 6
- 238000003795 desorption Methods 0.000 description 5
- 229960001484 edetic acid Drugs 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000007084 catalytic combustion reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- 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
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- 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
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
-
- 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
- B01D53/30—Controlling by gas-analysis apparatus
-
- 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
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- 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
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- 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
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a purifying and discharging device for flue gas desulfurization and denitrification, and relates to the technical field of flue gas treatment. The invention comprises a filtering device, a desulfurization and denitrification reaction device, a drying device and a first detection device; the first detection device is provided with two outlet ends, one outlet end is directly communicated with the exhaust device, the other outlet end is communicated with the secondary treatment device through a pipeline A, and the outlet of the secondary treatment device is communicated with a second detection device; be provided with the check valve on the pipeline A, the intercommunication has the muffler on the pipeline A between check valve and the secondary treatment device, and the one end of muffler communicates with an gas outlet of second detection device, and another gas outlet of second detection device communicates an blast pipe, blast pipe intercommunication exhaust apparatus. According to the invention, high-temperature industrial flue gas is introduced into the filtering device, and oily particle floating dust impurities generated by fossil energy combustion are filtered and adsorbed by the filtering device.
Description
Technical Field
The invention belongs to the technical field of flue gas treatment, and particularly relates to a purifying and discharging device for flue gas desulfurization and denitrification.
Background
Industrial waste gas is an important source of atmospheric pollutants; the organic waste gas mainly comes from waste gas discharged in the production process of petroleum and chemical industry, and is characterized by large quantity, large fluctuation of organic matter content, combustibility, certain toxicity, malodor and ozone layer damage caused by the discharge of chlorofluorocarbon. Storage facilities for petroleum and chemical industries and petrochemical products, printing and other industries related to petroleum and chemical industry, occasions and combustion equipment where petroleum and petrochemical products are used, and various transportation means using petroleum products as fuel are sources of organic waste gas.
The combustion of fossil energy sources such as petroleum not only generates organic waste gas, but also generates gases such as some particles, floating dust impurities, carbon dioxide and the like; conventional, such as CN112156612a, discloses an organic waste gas treatment system based on fossil energy combustion. The organic waste gas treatment system comprises at least two activated carbon adsorption tanks which are connected in parallel, wherein a first air inlet pipeline is arranged at the bottom of each activated carbon adsorption tank, an A valve is arranged on each first air inlet pipeline, the top of each activated carbon adsorption tank is connected with an adsorption fan through a purification pipeline, a B valve is arranged on each purification pipeline, the top of each activated carbon adsorption tank is connected with catalytic combustion equipment through a desorption pipeline, a C valve is arranged on each desorption pipeline, the catalytic combustion equipment is connected with a desorption fan, each desorption fan is connected to the bottom of each activated carbon adsorption tank through a hot air pipeline, a D valve is arranged on each hot air pipeline, an air supplementing pipeline is arranged between each D valve and each desorption fan, a second air inlet pipeline is further arranged at the top of each activated carbon adsorption tank, and an E valve is arranged on each second air inlet pipeline, and the negative pressure of each second air inlet pipeline is higher than that of each first air inlet pipeline. When the device is used, the activated carbon adsorption box is adopted for adsorption, and floating dust impurities such as oily particles and the like are used for a long time by activated carbon, so that the activated carbon in the activated carbon adsorption box needs to be replaced frequently, and the cost is high; and the use of activated carbon having adsorbed organic waste gas also has a problem of inconvenient handling.
Disclosure of Invention
The invention aims to provide a purification and emission device for flue gas desulfurization and denitrification, which is used for filtering and adsorbing oily particle floating dust impurities generated by fossil energy combustion by introducing high-temperature industrial flue gas into a filtering device, so that the problems of high cost and frequent replacement of active carbon in an active carbon adsorption box in the prior art are solved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a purifying and discharging device for flue gas desulfurization and denitrification, which comprises a filtering device, a desulfurization and denitrification reaction device, a drying device and a first detection device; the first detection device is provided with two outlet ends, one outlet end is directly communicated with the exhaust device, the other outlet end is communicated with the secondary treatment device through a pipeline A, and the outlet of the secondary treatment device is communicated with a second detection device; the pipeline A is provided with a one-way valve, a return air pipe is communicated with the pipeline A between the one-way valve and the secondary treatment device, one end of the return air pipe is communicated with an air outlet of the second detection device, the other air outlet of the second detection device is communicated with an exhaust pipe, the exhaust pipe is communicated with the exhaust device, and a valve C is arranged on the exhaust pipe; the air return pipe is provided with a valve A; the valve A, the valve C, the first detection device and the second detection device are all connected with a processing module.
Further, the filter device comprises a box body, an air inlet pipe A and an air outlet pipe A are respectively communicated with the bottom and the top of the box body, a porous partition plate is arranged in the box body between the air inlet pipe A and the air outlet pipe A, and a first stone layer, a sawdust layer and a second stone layer are paved on the porous partition plate.
Further, an annular water supplementing spray pipe is arranged in the box body right above the porous partition plate, and a spray head is arranged on the water supplementing spray pipe; a raindrop sensor is arranged right below the porous partition plate, and the water supplementing spray pipe is communicated with a water supplementing pipe provided with a valve B; and the raindrop sensor and the valve B are connected with the processing module.
Further, the desulfurization and denitrification reaction device comprises a closed device body, wherein two vertical partition boards are arranged in the device body in parallel, and a desulfurization and denitrification cavity A, a desulfurization and denitrification cavity B and a drying cavity are formed by separation of the partition boards; the desulfurization and denitrification cavity A is filled with desulfurization and denitrification granules; a desulfurization and denitrification solution is filled in the desulfurization and denitrification cavity B; the drying cavity is filled with drying particles; the bottom of the device body is also provided with an air inlet pipe B and an air outlet pipe B which are communicated with the desulfurization and denitrification cavity A and the drying cavity respectively; a first pipe penetrates through the partition plate between the desulfurization and denitrification cavity A and the desulfurization and denitrification cavity B, the air inlet end of the first pipe is positioned at the top of the desulfurization and denitrification cavity A and is higher than the liquid level of the desulfurization and denitrification solution, and the air outlet end of the first pipe extends to the bottom of the desulfurization and denitrification cavity B; the separator between the desulfurization and denitrification cavity B and the drying cavity is penetrated with a second pipe, the air inlet end of the second pipe is positioned at the top of the desulfurization and denitrification cavity B and is higher than the liquid level of the desulfurization and denitrification solution, and the air outlet end of the second pipe extends to the bottom of the drying cavity.
Further, the desulfurization and denitrification granule comprises the following raw materials in parts by weight: 2 to 7 parts of sodium carbonate, 1 to 3 parts of aluminum oxide, 2 to 8 parts of aluminum hydroxide, 2 to 5 parts of ferric trichloride, 2 to 6 parts of ferric trioxide, 3 to 10 parts of potassium permanganate, 3 to 10 parts of potassium chlorate, 10 to 35 parts of active attapulgite clay, 15 to 30 parts of urea, 2 to 4 parts of ammonium formate, 2 to 4 parts of ammonium chloride, 6 to 23 parts of ammonium acetate, 3 to 9 parts of manganese oxide, 9 to 12 parts of copper chloride, 1 to 3 parts of copper oxide, 2 to 4 parts of zinc sulfate, 1 to 3 parts of zinc nitrate, 7 to 18 parts of potassium dichromate, 1.0 to 1.5 parts of titanium dioxide, 0.5 to 1.0 part of barium molybdate, 0.5 to 1.5 parts of cobalt sulfate, 0.5 to 1.5 parts of vanadium pentoxide, 0.3 to 0.7 part of cerium oxide, 0.1 to 0.2 part of sodium dodecyl benzene sulfonate and 0.1 to 0.2 part of alkyl glyceryl ether sulfonate; the drying particles are quicklime particles or activated carbon particles.
Further, the desulfurization and denitrification solution is dimethyl sulfoxide solution; or mixing urea 40-50 weight parts, sodium carbonate 60-80 weight parts, EDTA ferric oxide 0.2-0.8 weight parts, auxiliary absorbent 0.2-0.8 weight parts and distearyl diethylenetriamine 0.5-0.8 weight parts; the total weight of EDTA (ethylene diamine tetraacetic acid) and iron, the auxiliary absorbent and the surfactant is more than 1.2 weight parts, 700-900 weight parts of deionized water is added, the mixture is stirred uniformly, and a proper amount of sodium hydroxide is added to adjust the pH to 10-12.
Further, the drying device comprises a drying box, wherein an air inlet is formed in the bottom of the drying box, an air outlet is formed in the top of the drying box, and drying particles are filled in the drying box; the air outlet is a transparent column body, and anhydrous copper sulfate is filled in the transparent column body.
Further, the secondary treatment device and the desulfurization and denitrification reaction device have the same structure; the second detection device and the first detection device have the same structure; the first detection device comprises a bin body, and a detection sensor is arranged in the bin body; the detection sensor is used for detecting NO X Concentration and SO 2 Concentration.
Further, a waste heat recovery device is arranged between the desulfurization and denitrification reaction device and the filtering device.
The invention has the following beneficial effects:
the invention utilizes the filter device to filter and adsorb oily particle floating dust impurities generated by fossil energy combustion by introducing high-temperature industrial flue gas into the filter device; meanwhile, the desulfurization and denitration of the flue gas are performed after the removal, so that the consumption of desulfurization and denitration liquid in the desulfurization and denitration process is reduced, and the treatment efficiency of the sulfur and denitration liquid is synchronously improved.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a purge drain apparatus according to the present invention;
FIG. 2 is a schematic diagram of a filter device according to the present invention;
FIG. 3 is a schematic diagram of the desulfurization and denitrification reaction device.
Detailed Description
As shown in fig. 1, a purifying and discharging device for flue gas desulfurization and denitrification;
when the device is used, flue gas generated by burning fossil fuel enters the filter device 1, the filter device 1 is used for filtering, oily particle floating dust impurities generated by burning fossil energy are absorbed and filtered, tail gas without solid impurity particles generated after filtering enters the desulfurization and denitrification reaction device 2 for desulfurization and denitrification reaction, then enters the drying device 3 for drying, and then enters the first detection device 4 for detecting the treatment condition after drying, and if the treatment is finished, the flue gas is directly discharged through the exhaust device 7, otherwise, the flue gas is introduced into the secondary treatment device 5 for secondary treatment; the processed gas is introduced into the second detection device 6, at the moment, the processing condition is detected, if the processing is completed, the gas is directly discharged through the exhaust device 7, otherwise, the processed gas is introduced into the secondary processing device 5 through the gas return pipe 43 for processing again until the detection and display processing is completed and the gas is discharged through the exhaust device 7;
the purifying and discharging device comprises a filtering device 1, a desulfurization and denitrification reaction device 2, a drying device 3 and a first detection device 4; the first detection device 4 is provided with two outlet ends, one outlet end is directly communicated with the exhaust device 7, the other outlet end is communicated with the secondary treatment device 5 through a pipeline A41, and the outlet of the secondary treatment device 5 is communicated with the second detection device 6; the pipeline A41 is provided with a one-way valve 42, a return air pipe 43 is communicated with the pipeline A41 between the one-way valve 42 and the secondary treatment device 5, one end of the return air pipe 43 is communicated with one air outlet of the second detection device 6, the other air outlet of the second detection device 6 is communicated with an exhaust pipe 61, the exhaust pipe 61 is communicated with the exhaust device 7, and a valve C62 is arranged on the exhaust pipe 61; the air return pipe 43 is provided with a valve A44; the valve A44, the valve C62, the first detection device 4 and the second detection device 6 are all connected with a processing module;
in the above, the first detection device 4 and the second detection device 6 acquire the detection parameters, and the processing module controls the opening and closing of the valve a44 and the valve C62.
The filtering device 1 comprises a box body 10, wherein an air inlet pipe A11 and an air outlet pipe A12 are respectively communicated with the bottom and the top of the box body 10, a porous partition plate 13 is arranged in the box body between the air inlet pipe A11 and the air outlet pipe A12, and a first stone layer 131, a sawdust layer 132 and a second stone layer 133 are paved on the porous partition plate 13; an annular water supplementing spray pipe 14 is arranged in the box body 10 right above the porous partition plate 13, and a spray head is arranged on the water supplementing spray pipe 14; a rain drop sensor is arranged right below the porous partition plate 13, and a water supplementing pipe provided with a valve B is communicated with the water supplementing spray pipe 14; the raindrop sensor and the valve B are both connected with the processing module.
Spraying clear water into the sawdust layer 132 and the like through the water supplementing spray pipe 14, so that the sawdust layer 132 is always in a wet state;
detecting whether the first stone layer 131 drops by a raindrop sensor; if yes, the sawdust layer 132 is in a wet state, the valve B is closed to stop spraying water, otherwise, when the raindrop sensor detects that no water drops fall off at intervals of 40 seconds, the valve B is opened to spray water.
The desulfurization and denitrification reaction device 2 comprises a closed device body 20, wherein two vertical partition plates 21 are arranged in the device body 20 in parallel, and a desulfurization and denitrification cavity A22, a desulfurization and denitrification cavity B23 and a drying cavity 24 are formed by separation of the partition plates 21; the desulfurization and denitrification cavity A22 is filled with desulfurization and denitrification granules; a desulfurization and denitrification solution is filled in the desulfurization and denitrification cavity B23; the drying chamber 24 is filled with dry particles; the bottom of the device body 20 is also provided with an air inlet pipe B201 and an air outlet pipe B202 which are communicated with the desulfurization and denitrification cavity A22 and the drying cavity 24 respectively; a first pipe 25 is arranged on the partition plate 21 between the desulfurization and denitrification cavity A22 and the desulfurization and denitrification cavity B23 in a penetrating way, the air inlet end of the first pipe 25 is positioned at the top of the desulfurization and denitrification cavity A22 and is higher than the liquid level of the desulfurization and denitrification solution, and the air outlet end of the first pipe 25 extends to the bottom of the desulfurization and denitrification cavity B23; a second pipe 26 is arranged on the partition plate 21 between the desulfurization and denitrification cavity B23 and the drying cavity 24 in a penetrating way, the air inlet end of the second pipe 26 is positioned at the top of the desulfurization and denitrification cavity B23 and is higher than the liquid level of the desulfurization and denitrification solution, and the air outlet end of the second pipe 26 extends to the bottom of the drying cavity 24.
The tail gas without solid impurity particles generated after filtration enters a desulfurization and denitrification cavity A22 of a desulfurization and denitrification reaction device 2, primary desulfurization and denitrification treatment is carried out under the action of desulfurization and denitrification granules, then gas enters a desulfurization and denitrification cavity B23, and secondary desulfurization and denitrification treatment is carried out under the action of desulfurization and denitrification solution; and then passed into the drying chamber 24 for drying.
The desulfurization and denitrification granule consists of the following raw materials in parts by weight: 5 parts of sodium carbonate, 2 parts of aluminum oxide, 5 parts of aluminum hydroxide, 3 parts of ferric trichloride, 3 parts of ferric oxide, 8 parts of potassium permanganate, 8 parts of potassium chlorate, 20 parts of active attapulgite clay, 20 parts of urea, 3 parts of ammonium formate, 3 parts of ammonium chloride, 18 parts of ammonium acetate, 6 parts of manganese oxide, 10 parts of copper chloride, 2 parts of copper oxide, 23 parts of zinc sulfate, 2 parts of zinc nitrate, 12 parts of potassium dichromate, 1.2 parts of titanium dioxide, 1.0 part of barium molybdate, 1.5 parts of cobalt sulfate, 1.5 parts of vanadium pentoxide, 0.3 part of cerium oxide, 0.1 part of sodium dodecyl benzene sulfonate and 0.1 part of alkyl glyceryl ether sulfonate; the dry particles are quicklime particles.
The desulfurization and denitrification solution is prepared by mixing 45 parts by weight of urea, 70 parts by weight of sodium carbonate, 0.5 part by weight of EDTA (ethylene diamine tetraacetic acid) ferric oxide, 0.25 part by weight of auxiliary absorbent and 0.5 part by weight of distearoyl diethylenetriamine; adding 750 parts by weight of deionized water, uniformly stirring, adding a proper amount of sodium hydroxide, and adjusting the pH to 11.
The drying device 3 comprises a drying box, the bottom of the drying box is provided with an air inlet, the top of the drying box is provided with an air outlet, and the drying box is filled with drying particles; the air outlet is a transparent column body, and anhydrous copper sulfate is filled in the transparent column body; through drying device 3 setting, detect after drying the tail gas after handling, anhydrous copper sulfate's setting simultaneously can in time judge whether the tail gas contains water.
The secondary treatment device 5 and the desulfurization and denitrification reaction device 2 have the same structure; and the second detection device 6 and the first detection device 4 have the same structure; the first detection device 4 comprises a bin body, and a detection sensor is arranged in the bin body; NO detection sensor for detecting X Concentration and SO 2 Concentration.
A waste heat recovery device is arranged between the desulfurization and denitrification reaction device 2 and the filtering device 1, and the temperature of the gas entering the desulfurization and denitrification reaction device 2 is reduced by using the arrangement of the waste heat recovery device, so that a large amount of desulfurization and denitrification solution is prevented from being brought out by overhigh temperature; meanwhile, the waste heat recovery is convenient for carrying out heat recovery on the high-temperature gas, and the waste heat recovery device can be used for heating water and the like.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. A purify discharging equipment for flue gas desulfurization denitration, its characterized in that: comprises a filtering device (1), a desulfurization and denitrification reaction device (2), a drying device (3) and a first detection device (4);
the first detection device (4) is provided with two outlet ends, one outlet end is directly communicated with the exhaust device (7), the other outlet end is communicated with the secondary treatment device (5) through a pipeline A (41), and the outlet of the secondary treatment device (5) is communicated with a second detection device (6);
the pipeline A (41) is provided with a one-way valve (42), a return air pipe (43) is communicated with the pipeline A (41) between the one-way valve (42) and the secondary treatment device (5), one end of the return air pipe (43) is communicated with an air outlet of the second detection device (6), the other air outlet of the second detection device (6) is communicated with an exhaust pipe (61), the exhaust pipe (61) is communicated with the exhaust device (7), and a valve C (62) is arranged on the exhaust pipe (61);
a valve A (44) is arranged on the air return pipe (43);
the valve A (44), the valve C (62), the first detection device (4) and the second detection device (6) are all connected with a processing module; the filtering device (1) comprises a box body (10), wherein an air inlet pipe A (11) and an air outlet pipe A (12) are respectively communicated with the bottom and the top of the box body (10), a porous partition plate (13) is arranged in the box body between the air inlet pipe A (11) and the air outlet pipe A (12), and a first stone layer (131), a sawdust layer (132) and a second stone layer (133) are paved on the porous partition plate (13);
an annular water supplementing spray pipe (14) is arranged in the box body (10) right above the porous partition plate (13), and a spray head is arranged on the water supplementing spray pipe (14);
a raindrop sensor is arranged right below the porous partition plate (13), and the water supplementing spray pipe (14) is communicated with a water supplementing pipe provided with a valve B;
the raindrop sensor and the valve B are connected with the processing module;
clean water is sprayed into the sawdust layer (132) through the water supplementing spray pipe (14), so that the sawdust layer (132) is always in a wet state;
detecting whether water drops fall off on the first stone layer (131) through a raindrop sensor; if yes, the sawdust layer (132) is in a wet state, the valve B is closed to stop spraying water, otherwise, when the raindrop sensor detects that no water drops fall off at intervals of 40 seconds, the valve B is opened to spray water.
2. The purifying and discharging device for flue gas desulfurization and denitrification according to claim 1, wherein the desulfurization and denitrification reaction device (2) comprises a sealed device body (20), two vertical partition boards (21) are arranged in the device body (20) in parallel, and a desulfurization and denitrification cavity A (22), a desulfurization and denitrification cavity B (23) and a drying cavity (24) are formed by the partition boards (21) in a separation mode;
the desulfurization and denitrification cavity A (22) is filled with desulfurization and denitrification granules; a desulfurization and denitrification solution is filled in the desulfurization and denitrification cavity B (23); the drying cavity (24) is filled with drying particles;
the bottom of the device body (20) is also provided with an air inlet pipe B (201) and an air outlet pipe B (202) which are communicated with the desulfurization and denitrification cavity A (22) and the drying cavity (24) respectively;
a first pipe (25) is arranged on the partition plate (21) between the desulfurization and denitrification cavity A (22) and the desulfurization and denitrification cavity B (23) in a penetrating way, the air inlet end of the first pipe (25) is positioned at the top of the desulfurization and denitrification cavity A (22) and is higher than the liquid level of the desulfurization and denitrification solution, and the air outlet end of the first pipe (25) extends to the bottom of the desulfurization and denitrification cavity B (23);
the desulfurization and denitrification cavity B (23) and the drying cavity (24) are provided with a second pipe (26) in a penetrating mode on a partition plate (21), the air inlet end of the second pipe (26) is located at the top of the desulfurization and denitrification cavity B (23) and is higher than the liquid level of the desulfurization and denitrification solution, and the air outlet end of the second pipe (26) extends to the bottom of the drying cavity (24).
3. The purification and emission device for flue gas desulfurization and denitrification as claimed in claim 2, wherein the desulfurization and denitrification granules are composed of the following raw materials in parts by weight: 2 to 7 parts of sodium carbonate, 1 to 3 parts of aluminum oxide, 2 to 8 parts of aluminum hydroxide, 2 to 5 parts of ferric trichloride, 2 to 6 parts of ferric trioxide, 3 to 10 parts of potassium permanganate, 3 to 10 parts of potassium chlorate, 10 to 35 parts of active attapulgite clay, 15 to 30 parts of urea, 2 to 4 parts of ammonium formate, 2 to 4 parts of ammonium chloride, 6 to 23 parts of ammonium acetate, 3 to 9 parts of manganese oxide, 9 to 12 parts of copper chloride, 1 to 3 parts of copper oxide, 2 to 4 parts of zinc sulfate, 1 to 3 parts of zinc nitrate, 7 to 18 parts of potassium dichromate, 1.0 to 1.5 parts of titanium dioxide, 0.5 to 1.0 part of barium molybdate, 0.5 to 1.5 parts of cobalt sulfate, 0.5 to 1.5 parts of vanadium pentoxide, 0.3 to 0.7 part of cerium oxide, 0.1 to 0.2 part of sodium dodecyl benzene sulfonate and 0.1 to 0.2 part of alkyl glyceryl ether sulfonate; the drying particles are quicklime particles or activated carbon particles.
4. The purification and emission device for flue gas desulfurization and denitrification as claimed in claim 2, wherein the desulfurization and denitrification solution is dimethyl sulfoxide solution; or mixing urea 40-50 weight parts, sodium carbonate 60-80 weight parts, EDTA ferric oxide 0.2-0.8 weight parts, auxiliary absorbent 0.2-0.8 weight parts and distearyl diethylenetriamine 0.5-0.8 weight parts;
wherein the sum of the weight of EDTA iron, the auxiliary absorbent and the surfactant is more than 1.2 weight parts, 700-900 weight parts of deionized water is added, the mixture is stirred uniformly, and a proper amount of sodium hydroxide is added to adjust the pH to 10-12.
5. The purification and emission device for flue gas desulfurization and denitrification according to claim 1, wherein the drying device (3) comprises a drying box, an air inlet is arranged at the bottom of the drying box, an air outlet is arranged at the top of the drying box, and drying particles are filled in the drying box; the air outlet is a transparent column body, and anhydrous copper sulfate is filled in the transparent column body.
6. The purification and emission device for flue gas desulfurization and denitrification according to claim 1, wherein the secondary treatment device (5) and the desulfurization and denitrification reaction device (2) are identical in structure; the second detection device (6) and the first detection device (4) have the same structure; the first detection device (4) comprises a bin body, and a detection sensor is arranged in the bin body.
7. The purification and emission device for desulfurization and denitrification of flue gas according to claim 6, wherein the detection sensor is for detecting NO X Concentration and SO 2 Concentration.
8. The purifying and discharging device for flue gas desulfurization and denitrification according to claim 1, wherein a waste heat recovery device is arranged between the desulfurization and denitrification reaction device (2) and the filtering device (1).
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