CN110420557A - A kind of wet desulphurization denitration absorption plant - Google Patents
A kind of wet desulphurization denitration absorption plant Download PDFInfo
- Publication number
- CN110420557A CN110420557A CN201910763214.7A CN201910763214A CN110420557A CN 110420557 A CN110420557 A CN 110420557A CN 201910763214 A CN201910763214 A CN 201910763214A CN 110420557 A CN110420557 A CN 110420557A
- Authority
- CN
- China
- Prior art keywords
- stomata
- desulphurization denitration
- absorption plant
- layer
- flue gas
- Prior art date
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 46
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 114
- 239000007921 spray Substances 0.000 claims abstract description 61
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 57
- 239000003546 flue gas Substances 0.000 claims abstract description 57
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000007789 gas Substances 0.000 claims abstract description 53
- 238000005507 spraying Methods 0.000 claims abstract description 47
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 46
- 230000003647 oxidation Effects 0.000 claims abstract description 36
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 36
- 239000007800 oxidant agent Substances 0.000 claims abstract description 23
- 230000001590 oxidative effect Effects 0.000 claims abstract description 23
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000908 ammonium hydroxide Substances 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims description 31
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 28
- 229960002163 hydrogen peroxide Drugs 0.000 claims description 22
- 238000001802 infusion Methods 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 8
- 230000023556 desulfurization Effects 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims 2
- 238000002386 leaching Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 27
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 16
- 239000007788 liquid Substances 0.000 description 11
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000005864 Sulphur Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 3
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 3
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 3
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- AOSFMYBATFLTAQ-UHFFFAOYSA-N 1-amino-3-(benzimidazol-1-yl)propan-2-ol Chemical compound C1=CC=C2N(CC(O)CN)C=NC2=C1 AOSFMYBATFLTAQ-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8637—Simultaneously removing sulfur oxides and nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention provides a kind of wet desulphurization denitration absorption plants, the desulphurization denitration absorption plant includes desulphurization denitration tower, flue gas air intake is arranged in the lower part of desulphurization denitration tower side wall, bottom-up in desulphurization denitration tower to set gradually flue gas mixed distribution device, oxidation spraying layer, the first gas cap layer, spray ammonia distribution layer, the second gas cap layer, inhale ammonia spraying layer, demister, flue gas gas outlet；The desulphurization denitration absorption plant further includes oxidant supply reservoir, buffer pool.Desulphurization denitration absorption plant of the invention first by after sulfur dioxide and nitrogen oxides, is absorbed with ammonium hydroxide, and the sulfur dioxide and nitrogen oxides of the ammonia and oxidized residual that overflow then are absorbed with hydrogen peroxide.The desulfuration efficiency of desulphurization denitration absorption plant of the invention is high, and denitration efficiency is high, and ammonia overflows few.
Description
Technical field
The invention belongs to flue gas purifying equipment technical fields, and in particular to a kind of wet desulphurization denitration absorption plant.
Background technique
Mode that there are many desulphurization denitration processing of coking flue gas in the prior art, but existing technical method and device
Have the disadvantage that the device process flow of the prior art is not reasonable, and gas-liquid mixed is not enough when desulphurization denitration spray,
Cause desulfurization off sulfide effect poor, gas phase amount of ammonia slip is more.
Summary of the invention
A kind of wet desulphurization denitration absorption is provided it is an object of the invention to overcome the shortcomings of the prior art place
Device.
To achieve the above object, the technical scheme adopted by the invention is as follows: a kind of wet desulphurization denitration absorption plant, it is described de-
Sulphur denitration absorption plant includes desulphurization denitration tower, and the lower part of desulphurization denitration tower side wall, desulphurization denitration tower is arranged in flue gas air intake
It is interior it is bottom-up set gradually flue gas mixed distribution device, oxidation spraying layer, the first gas cap layer, spray ammonia distribution layer, the second gas cap layer,
Inhale ammonia spraying layer, demister, flue gas gas outlet；
The desulphurization denitration absorption plant further includes oxidant supply reservoir, and it is defeated to be provided with hydrogen peroxide in oxidant supply reservoir
Enter pipe and store hydrogenperoxide steam generator, oxidant supply bottom of pond portion is provided with the equal stringing of ozone, and the equal stringing of ozone and ozone are sent out
Raw device piping connection, ozone are evenly distributed with pipe end and are communicated with the equal leftover of bolt of cloth of ozone；
The desulphurization denitration absorption plant further includes buffer pool；
The flue gas mixed distribution device and flue gas air intake piping connection, the smoke distribution mouth of flue gas mixed distribution device are uniform
It is arranged in the same level on desulphurization denitration absorption tower；
The oxidation spraying layer includes the first spray head and catalyst plates, and first spray head passes through infusion pump and oxidation
Agent supply reservoir piping connection, the catalyst plates are fixed on vertically in the shaft of the first gas cap layer bottom, and the shaft is solid vertically
Due to the first gas cap layer bottom middle position, catalyst plates are provided with 2-8 block, and catalyst plates are symmetrical with the spindle central, turn
Axis is fixedly connected with the rotor horizontally rotated and is driven by motor, and the injection direction of the first spray head is towards catalyst plates plate face, and
The desulphurization denitration inner wall of tower of the oxidation spraying layer is arranged in one spray head, and oxidation spraying layer bottom, which is provided with, leads to the buffering
The third return pipe in pond；
The spray ammonia distribution layer is provided with the second spray head, and the second spray head passes through infusion pump and ammonium hydroxide feeding mechanism pipeline
Connection；
The suction ammonia spraying layer is provided with third spray head, and third spray head passes through infusion pump and oxidant supply reservoir pipeline
Connection；
The first gas cap layer includes baffle, stomata, stomata cylinder, stomata cap, and the baffle is laterally arranged and extends to de-
Four wall of sulphur denitrating tower separates oxidation spraying layer and spray ammonia distribution layer, and the stomata is uniformly distributed in the baffle and penetrates through oxidation spray
Drenching layer and spray ammonia distribution layer, each stomata are correspondingly arranged a stomata cylinder and stomata cap, the stomata cylinder up and down, stomata
Cylinder is fixed on above baffle and the surrounding of each stomata cylinder surrounds corresponding stomata, and the stomata cap is set to above stomata cylinder,
The projection straight down of the stomata cap covers corresponding stomata, and the baffle of the first gas cap layer, which is equipped with, leads to described delay
Rush first return pipe in pond；
The second gas cap layer includes baffle, stomata, stomata cylinder, stomata cap, and the baffle is laterally arranged and extends to de-
Four wall of sulphur denitrating tower separates spray ammonia distribution layer and inhales ammonia spraying layer, and the stomata is uniformly distributed in the baffle and penetrates through spray ammonia point
Layer of cloth and inhale ammonia spraying layer, each stomata is correspondingly arranged a stomata cylinder and stomata cap, the stomata cylinder up and down, stomata
Cylinder is fixed on above baffle and the surrounding of each stomata cylinder surrounds corresponding stomata, and the stomata cap is set to above stomata cylinder,
The projection straight down of the stomata cap covers corresponding stomata, and the baffle of the second gas cap layer, which is equipped with, leads to described delay
Rush second return pipe in pond.
The operational process of above-mentioned desulphurization denitration absorption plant are as follows: high-temperature flue gas passes through the flue gas of desulphurization denitration tower side wall lower part
Entrance is distributed in desulphurization denitration tower bottom through flue gas mixed distribution device and flows up, at the same time, in oxidant supply reservoir
Hydrogenperoxide steam generator dissolved with ozone by infusion pump by oxidation spraying layer spray head be sprayed on oxidation spraying layer and to
The flue gas of upper flowing mixes, the sulfur dioxide and nitrogen oxide (NO in flue gasx) gas generates sulfur trioxide and two after peroxidating
Nitrogen oxide, part sulfur trioxide and nitrogen dioxide are dissolved in hydrogenperoxide steam generator and form sulfuric acid and nitric acid by aoxidizing spraying layer bottom
The third return pipe in portion enters buffer pool, remaining sulfur trioxide and nitrogen dioxide and is flowed up with flue gas by the first gas cap layer
Into spray ammonia distribution layer, the remnants' for the spilling being also dissolved in originally in hydrogenperoxide steam generator that companion flue gas flows up is smelly
Oxygen, sulfur trioxide and nitrogen dioxide are converted into ammonium sulfate, ammonium hydrogen sulfate, ammonium nitrate in spray ammonia distribution layer, in oxidation spraying layer
Non- complete oxidation with flue gas enters the sulfur dioxide of spray ammonia distribution layer and further by ammonium hydroxide absorbs and is spilled off ozone oxidation
Enter buffer pool at ammonium sulfate, ammonium hydrogen sulfate and by the first return pipe, the ammonia overflowed in spray ammonia distribution layer is in company with flue gas
It is absorbed in inhaling ammonia spraying layer, inhales ammonia spraying layer and inhaled using the hydrogenperoxide steam generator dissolved with ozone in oxidant supply reservoir
The ammonia overflowed is received, while can also further aoxidize sulfur dioxide and nitrogen oxide (NO remaining in last stage flue gasx) gas
And ammonium sulfate and ammonium nitrate are partially converted into dissolution ammonia in a liquid, the liquid of raising is to the absorption efficiency of ammonia, more
The spilling of the good ammonia avoided, the flue gas after inhaling ammonia spraying layer and absorbing ammonia are arranged after demister from desulphurization denitration tower
Out.Above-mentioned desulphurization denitration absorption plant uses initial oxidation sulfur dioxide and nitrogen oxide (NOx) gas then absorbed with ammonium hydroxide, then
The ammonia overflowed, and the remaining sulfur dioxide of simultaneous oxidation and nitrogen oxide (NO are absorbed with the hydrogen peroxide dissolved with ozonex) gas
Body, process is reasonable and improves sulfur dioxide and nitrogen oxide removal efficiency, reduces the spilling of ammonia, and the liquid warp of spraying layer
It crosses after return pipe enters buffer pool and mixes, it can be with oxygen by third return pipe and the remaining hydrogen peroxide of the first return pipe, ozone
Change the ammonium sulfite not being fully oxidized or ammonium bisulfite, resource rational utilization of the inflow of the second return pipe, obtained sulphur
The product purity of sour ammonium and ammonium nitrate is high；The rotation for the catalyst plates being vertically arranged in oxidation spraying layer is so that be sprayed at catalyst
Hydrogenperoxide steam generator on plate is due to spraying and what the rotation of catalyst plates was formed has mutually rushed the smaller drop of formation, with flue gas
Contact it is more abundant, improve oxidation efficiency.
Preferably, the equal leftover of bolt of cloth of the ozone is provided with intensive gas delivery outlet, and the aperture of gas delivery outlet is 1 μm of -20 μ
m。
Above-mentioned being provided with for the equal leftover of bolt of cloth of ozone is distributed more evenly across in hydrogenperoxide steam generator conducive to ozone.
Preferably, the catalyst plates are two vertical plates or sectional elevation is wavy plate.
Two vertical plates enable to the retention time of hydrogenperoxide steam generator on a catalyst is opposite to extend, and generation flowing makes
It obtains and enables to hydrogen peroxide molten for wavy plate with the contact of the flue gas flowed up better long period, sectional elevation
The retention time of liquid on a catalyst is longer, so that the flue gas flowed up is sufficiently in the contact of hydrogen peroxide bigger serface,
Improve oxidation efficiency.
Preferably, the catalyst plates are provided with 3-6 block, and catalyst plates are symmetrical with the spindle central.
Preferably, the flue gas mixed distribution device is provided with several jet mechanisms, and the jet mechanism includes air jet pipe, spray
Gas head and air nozzle, the air jet pipe it is fixed vertically and with flue gas air intake pipeline connection, the jet thrust is flattened cylindrical shape,
Inside forms hollow flattened cylindrical shape cavity, and there is circular through hole in jet thrust bottom surface, and the through-hole outer rim is fixed with annulus, annulus
Outside air jet pipe, jet thrust is connected to by circular through hole with air jet pipe sliding sleeve, and annular groove or convex annular are arranged outside air jet pipe
Block limitation annulus slides up and down, and the air nozzle is the hollow tube of L-type or class L-type, and each jet thrust is provided with 3-8 jet
One end perforation jet thrust side wall of mouth, air nozzle is connected to jet thrust inner cavity, plane where the hollow tube axle center of air nozzle and spray
The cylindrical bottom of gas head is parallel, 3-8 air nozzle central symmetry on the same jet thrust, the L-type bending of 3-8 air nozzle
Direction is the same clockwise.
The setting of the air jet pipe and jet thrust of the jet mechanism allows jet thrust using air jet pipe as center axis level
It is freely rotated, air nozzle is set as the hollow tube of L-type or class L-type, and one end is connected to jet thrust, the L-type bending of the other end
Direction is the same clockwise, after inputting flue gas, since the recoil effect of flue gas rotates jet thrust, does not need to move
Power can more evenly input flue gas, due to the rotation of jet thrust, increase the disturbance of flue gas, be more advantageous to mixed with hydrogen peroxide
Oxidation is closed, oxidation efficiency is improved.
Preferably, each jet thrust is provided with 4-6 air nozzle.
Preferably, the angle of the hollow tube air nozzle of the L-type or class L-type is 75-105 degree.
Preferably, the jet thrust and air jet pipe contact position are provided with sealing ring.
Preferably, the first agitating device is provided in the oxidant supply reservoir.
The first agitating device in oxidant supply reservoir can make ozone distribution more evenly.
Preferably, the second agitating device is provided in the buffer pool.
Agitating device in buffer pool can be such that remaining hydrogen peroxide and ammonium sulfite, cigarette ammonium hydrogen sulfate preferably mixes
It closes.
Preferably, the injection direction of first spray head and the angle of horizontal direction are no more than 10 degree.
The beneficial effects of the present invention are: the present invention provides a kind of wet desulphurization denitration absorption plant, of the invention is de-
The desulfuration efficiency of sulphur denitration absorption plant is high, and denitration efficiency is high, and ammonia overflows few.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the desulphurization denitration absorption plant of the embodiment of the present invention.
Fig. 2 is the partial schematic diagram of the first gas cap layer of the desulphurization denitration absorption plant of the embodiment of the present invention.
Fig. 3 is the schematic cross-section of the Section A-A of the desulphurization denitration absorption plant of the embodiment of the present invention.
Fig. 4 is the schematic diagram of the jet mechanism of the desulphurization denitration absorption plant of the embodiment of the present invention, wherein (a) is main view
Figure (b) is top view.
Fig. 5 is the schematic diagram of the catalyst plates of the desulphurization denitration absorption plant of the embodiment of the present invention, wherein (a) is main view
Figure is (b) schematic cross-section of section B-B
Wherein, 1, desulphurization denitration tower, 2, flue gas air intake, 3, flue gas mixed distribution device, 4, oxidation spraying layer, the 5, first spray
Drench head, 6, catalyst plates, 61, shaft, 7, motor, the 8, first gas cap layer, 81, stomata cylinder, 82, stomata, 83, gas cap, 84, gear
Plate, 9, spray ammonia distribution layer, the 10, second spray head, the 11, second gas cap layer, 12, third spray head, 13, inhale ammonia spraying layer, 14, remove
Day with fog, 15 flue gas gas outlets, the 16, first return pipe, the 17, second return pipe, the 18, second agitating device, 19, buffer pool, 20, oxygen
Agent supply reservoir, 21, the equal stringing of ozone, the 22, first agitating device, 23, ozone generator, 24, air jet pipe, 25, air nozzle,
26, jet thrust, 27, annulus, 28, annular lug, 29, third return pipe.
Specific embodiment
To better illustrate the object, technical solutions and advantages of the present invention, below in conjunction with specific embodiment to the present invention
It is described further.
Embodiment 1
As a kind of desulphurization denitration absorption plant of the embodiment of the present invention, as shown in Figure 1, Figure 2, Figure 3, Figure 4, the desulfurization
Denitration absorption plant includes desulphurization denitration tower 1, and the lower part of desulphurization denitration tower side wall, desulphurization denitration tower is arranged in flue gas air intake 2
It is interior it is bottom-up set gradually flue gas mixed distribution device 3, oxidation spraying layer 4, the first gas cap layer 8, spray ammonia distribution layer 9, the second gas
Cap layers 11 inhale ammonia spraying layer 13, demister 14, flue gas gas outlet 15；
The desulphurization denitration absorption plant further includes oxidant supply reservoir 20, is provided with hydrogen peroxide in oxidant supply reservoir
Input pipe simultaneously stores hydrogenperoxide steam generator, and oxidant supply bottom of pond portion is provided with the equal stringing 21 of ozone, the equal stringing of ozone with it is smelly
Oxygen Generator 23 connects, and ozone is evenly distributed with pipe end and is connected with the equal leftover of bolt of cloth of ozone, is provided with first in the oxidant supply reservoir and stirs
Device 22 is mixed, the equal leftover of bolt of cloth of ozone is provided with intensive gas delivery outlet, and the aperture of gas delivery outlet is 1 μm -20 μm；
The desulphurization denitration absorption plant further includes buffer pool 19, and the second agitating device 18 is provided in the buffer pool；
The flue gas mixed distribution device 3 and 2 piping connection of flue gas air intake, as shown in figure 4, the flue gas mixed distribution device
3 are provided with several jet mechanisms, and the jet mechanism includes air jet pipe 24, jet thrust 26 and air nozzle 25, the air jet pipe 24
It is vertical fixed and with 2 pipeline connection of flue gas air intake, the jet thrust 26 is flattened cylindrical shape, and inside forms hollow flat circle
There are circular through hole in cylindrical cavity, jet thrust bottom surface, and the through-hole outer rim is fixed with annulus 27, and annulus sliding sleeve is in air jet pipe 24
Outside, jet thrust 26 is connected to by circular through hole with air jet pipe 24, is arranged on the limitation annulus of annular lug 28 outside air jet pipe 24 and is glided
Dynamic, the jet thrust 26 and 24 contact position of air jet pipe are provided with sealing ring, and the air nozzle 25 is the hollow of L-type or class L-type
The angle of the hollow tube air nozzle of pipe, the L-type or class L-type is 90 degree, and each jet thrust 26 is provided with 6 air nozzles 25,
One end perforation 26 side wall of jet thrust of air nozzle 25 is connected to jet thrust inner cavity, plane where the hollow tube axle center of air nozzle and spray
The cylindrical bottom of gas head is parallel, 6 on the same jet thrust air nozzle central symmetry, the L-type overbending direction of 6 air nozzles
For the same clockwise；
The oxidation spraying layer include the first spray head 5 and catalyst plates 6, first spray head 5 by infusion pump with
20 piping connection of oxidant supply reservoir, the catalyst plates 6 are fixed in the shaft 61 of 8 bottom of the first gas cap layer vertically, described
Shaft is fixed on the first gas cap layer bottom middle position vertically, and catalyst plates are provided with 6 pieces, and 6 plate of catalyst is with the shaft 61
Central symmetry, the catalyst plates are two vertical plates, and shaft 61 is fixedly connected with the rotor horizontally rotated and is driven by motor 7, the
Horizontally toward the desulfurization of the oxidation spraying layer is arranged in catalyst plates plate face 6, the first spray head to the injection direction of one spray head 5
Denitration inner wall of tower, oxidation spraying layer are provided with the third return pipe 29 for leading to the buffer pool；
The spray ammonia distribution layer 9 is provided with the second spray head 10, and the second spray head 10 is filled by infusion pump and ammonium hydroxide supply
Set piping connection；
The suction ammonia spraying layer 13 is provided with third spray head 12, and third spray head passes through infusion pump and oxidant supply reservoir
Piping connection；
As shown in Fig. 2, the first gas cap layer 8 includes baffle 84, stomata 82, stomata cylinder 81, stomata cap 83, the baffle
84 are laterally arranged and extend to four wall of desulphurization denitration tower separation oxidation spraying layer 4 and spray ammonia distribution layer 9, equal 82 even points of the stomata
It is distributed in the baffle 84 and penetrates through oxidation spraying layer 4 and spray ammonia distribution layer 9, each stomata 82 is correspondingly arranged a stomata cylinder 81
With stomata cap 83, up and down, stomata cylinder 81 is fixed on baffle 84 above and the surrounding of each stomata cylinder 81 to the stomata cylinder 81
Corresponding stomata 82 is surrounded, the stomata cap 83 is set to 81 top of stomata cylinder, the projection straight down of the stomata cap 83
Corresponding stomata 82 is covered, the baffle of the first gas cap layer 8 is equipped with the first return pipe 16 for leading to the buffer pool；
The second gas cap layer 11 includes baffle, stomata, stomata cylinder, stomata cap, and the baffle is laterally arranged and extends to
Four wall of desulphurization denitration tower separates spray ammonia distribution layer 9 and inhales ammonia spraying layer 13, and the stomata is uniformly distributed in the baffle and penetrates through
It sprays ammonia distribution layer and inhales ammonia spraying layer, each stomata is correspondingly arranged a stomata cylinder and stomata cap, and the stomata cylinder passes through up and down
Logical, stomata cylinder is fixed on above baffle and the surrounding of each stomata cylinder surrounds corresponding stomata, and the stomata cap is set to stomata
Cylinder top, the projection straight down of the stomata cap cover corresponding stomata, and the baffle of the second gas cap layer is equipped with logical
To the second return pipe 17 of the buffer pool.
The operational process of the desulphurization denitration absorption plant of the present embodiment are as follows: high-temperature flue gas passes through under 1 side wall of desulphurization denitration tower
The smoke inlet 2 in portion is distributed in desulphurization denitration tower bottom through flue gas mixed distribution device 3 and flows up, at the same time, oxidant
The hydrogenperoxide steam generator dissolved with ozone in supply reservoir 20 is sprayed on by infusion pump by the spray head 5 of oxidation spraying layer 4
Oxidation spraying layer is mixed with the flue gas flowed up, and gas-liquid natural separation, liquid enters buffer pool, flue gas by third return pipe
It is flowed up by the first gas cap layer and sprays ammonia distribution layer, after flue gas and ammonium hydroxide blended absorbent, gas-liquid natural separation, liquid leads to
It crosses the first return pipe and enters buffer pool, flue gas is flowed up by the second gas cap layer inhales ammonia spraying layer, and inhaling ammonia spraying layer makes
Flue gas, gas-liquid natural separation are absorbed with the hydrogenperoxide steam generator dissolved with ozone in oxidant supply reservoir, liquid passes through second
Return pipe enters buffer pool, and gas is discharged after flowing upward through demister from desulphurization denitration tower.
The desulphurization denitration absorption plant desulfuration efficiency of the present embodiment is high, and denitration efficiency is high, and ammonia overflows few.
Embodiment 2
As a kind of desulphurization denitration absorption plant of the embodiment of the present invention, as shown in figure 5, the present embodiment and embodiment 1
Unique difference are as follows: the catalyst plates are that sectional elevation is wavy plate.
The desulphurization denitration absorption plant of the present embodiment enables to peroxidating due to using sectional elevation for wavy plate
The retention time of hydrogen solution on a catalyst is longer, so that the flue gas flowed up sufficiently connecing in hydrogen peroxide bigger serface
Touching, improves oxidation efficiency desulfuration efficiency and denitration efficiency is higher compared to embodiment 1.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of range is protected, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should
Understand, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the essence of technical solution of the present invention
And range.
Claims (10)
1. a kind of wet desulphurization denitration absorption plant, which is characterized in that the desulphurization denitration absorption plant includes desulphurization denitration tower,
Flue gas air intake is arranged in the lower part of desulphurization denitration tower side wall, bottom-up in desulphurization denitration tower to set gradually flue gas mixed distribution
Device, the first gas cap layer, spray ammonia distribution layer, the second gas cap layer, inhales ammonia spraying layer, demister, flue gas gas outlet at oxidation spraying layer；
The desulphurization denitration absorption plant further includes oxidant supply reservoir, and hydrogen peroxide input pipe is provided in oxidant supply reservoir
And hydrogenperoxide steam generator is stored, oxidant supply bottom of pond portion is provided with the equal stringing of ozone, the equal stringing of ozone and ozone generator
Piping connection, ozone are evenly distributed with pipe end and are communicated with the equal leftover of bolt of cloth of ozone；
The desulphurization denitration absorption plant further includes buffer pool；
The flue gas mixed distribution device and flue gas air intake piping connection, the smoke distribution mouth of flue gas mixed distribution device are uniformly arranged
In the same level on desulphurization denitration absorption tower；
The oxidation spraying layer includes the first spray head and catalyst plates, and first spray head is supplied by infusion pump and oxidant
Pond piping connection is answered, the catalyst plates are fixed on vertically in the shaft of the first gas cap layer bottom, and the shaft is fixed on vertically
First gas cap layer bottom middle position, catalyst plates are provided with 2-8 block, and catalyst plates are symmetrical with the spindle central, and shaft is solid
The rotor horizontally rotated is connected calmly and is driven by motor, and the injection direction of the first spray head is sprayed towards catalyst plates plate face, first
The desulphurization denitration inner wall of tower of the oxidation spraying layer is arranged in leaching head, and oxidation spraying layer bottom, which is provided with, leads to the buffer pool
Third return pipe；
The spray ammonia distribution layer is provided with the second spray head, and the second spray head is connected by infusion pump and ammonium hydroxide feeding mechanism pipeline
It connects；
The suction ammonia spraying layer is provided with third spray head, and third spray head is connected by infusion pump and oxidant supply reservoir pipeline
It connects；
The first gas cap layer includes baffle, stomata, stomata cylinder, stomata cap, and the baffle, which is laterally arranged and extends to desulfurization, to be taken off
Four wall of nitre tower separates oxidation spraying layer and spray ammonia distribution layer, and the stomata is uniformly distributed in the baffle and penetrates through oxidation spraying layer
With spray ammonia distribution layer, each stomata is correspondingly arranged a stomata cylinder and stomata cap, and up and down, stomata cylinder is solid for the stomata cylinder
Above baffle and the surrounding of each stomata cylinder surrounds corresponding stomata, and the stomata cap is set to above stomata cylinder, described
The projection straight down of stomata cap covers corresponding stomata, and the baffle of the first gas cap layer, which is equipped with, leads to the buffer pool
The first return pipe；
The second gas cap layer includes baffle, stomata, stomata cylinder, stomata cap, and the baffle, which is laterally arranged and extends to desulfurization, to be taken off
Four wall of nitre tower separates spray ammonia distribution layer and inhales ammonia spraying layer, and the stomata is uniformly distributed in the baffle and penetrates through spray ammonia distribution layer
With suction ammonia spraying layer, each stomata is correspondingly arranged a stomata cylinder and stomata cap, and up and down, stomata cylinder is solid for the stomata cylinder
Above baffle and the surrounding of each stomata cylinder surrounds corresponding stomata, and the stomata cap is set to above stomata cylinder, described
The projection straight down of stomata cap covers corresponding stomata, and the baffle of the second gas cap layer, which is equipped with, leads to the buffer pool
The second return pipe.
2. desulphurization denitration absorption plant according to claim 1, which is characterized in that the equal leftover of bolt of cloth of ozone is provided with intensively
Gas delivery outlet, the aperture of gas delivery outlet is 1 μm -20 μm.
3. desulphurization denitration absorption plant according to claim 1, which is characterized in that the catalyst plates be two vertical plates or
Person's sectional elevation is wavy plate.
4. desulphurization denitration absorption plant according to claim 1, which is characterized in that the catalyst plates are provided with 3-6 block,
Catalyst plates are symmetrical with the spindle central.
5. desulphurization denitration absorption plant according to claim 1, which is characterized in that the flue gas mixed distribution device is provided with
Several jet mechanisms, the jet mechanism include air jet pipe, jet thrust and air nozzle, and the air jet pipe is fixed vertically and and flue gas
Air intake pipeline connection, the jet thrust are flattened cylindrical shape, and inside forms hollow flattened cylindrical shape cavity, jet thrust bottom surface
There is circular through hole, the through-hole outer rim is fixed with annulus, and for annulus sliding sleeve outside air jet pipe, jet thrust passes through circular through hole and spray
Tracheae connection, annular groove is arranged in air jet pipe outside, and perhaps annular lug limitation annulus slides up and down the air nozzle as L-type or class
The hollow tube of L-type, each jet thrust are provided with 3-8 air nozzle, and one end of air nozzle penetrates through in jet thrust side wall and jet thrust
Chamber connection, plane where the hollow tube axle center of air nozzle is parallel with the cylindrical bottom of jet thrust, the 3-8 on the same jet thrust
A air nozzle central symmetry, the L-type overbending direction of 3-8 air nozzle are the same clockwise.
6. desulphurization denitration absorption plant according to claim 5, which is characterized in that the hollow tube of the L-type or class L-type
The angle of air nozzle is 75-105 degree.
7. desulphurization denitration absorption plant according to claim 5, which is characterized in that the jet thrust and air jet pipe contact position
It is provided with sealing ring.
8. desulphurization denitration absorption plant according to claim 1, which is characterized in that be provided in the oxidant supply reservoir
First agitating device.
9. desulphurization denitration absorption plant according to claim 1, which is characterized in that be provided with second in the buffer pool and stir
Mix device.
10. desulphurization denitration absorption plant according to claim 1, which is characterized in that the injection side of first spray head
It is no more than 10 degree to the angle of horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910763214.7A CN110420557B (en) | 2019-08-19 | Wet desulfurization denitration absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910763214.7A CN110420557B (en) | 2019-08-19 | Wet desulfurization denitration absorbing device |
Publications (2)
| Publication Number | Publication Date |
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| CN110420557A true CN110420557A (en) | 2019-11-08 |
| CN110420557B CN110420557B (en) | 2024-07-26 |
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