CN107321135A - A kind of low temperature charcoal base combined desulfurization and denitration flue gas system and its application method - Google Patents
A kind of low temperature charcoal base combined desulfurization and denitration flue gas system and its application method Download PDFInfo
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- CN107321135A CN107321135A CN201710717818.9A CN201710717818A CN107321135A CN 107321135 A CN107321135 A CN 107321135A CN 201710717818 A CN201710717818 A CN 201710717818A CN 107321135 A CN107321135 A CN 107321135A
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- 239000003546 flue gas Substances 0.000 title claims abstract description 67
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000003610 charcoal Substances 0.000 title claims abstract description 37
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 32
- 230000023556 desulfurization Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 43
- 239000011593 sulfur Substances 0.000 claims abstract description 43
- 230000008929 regeneration Effects 0.000 claims abstract description 41
- 238000011069 regeneration method Methods 0.000 claims abstract description 41
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 28
- 239000004744 fabric Substances 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 11
- 230000008439 repair process Effects 0.000 claims abstract description 10
- 238000011065 in-situ storage Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 50
- 238000010438 heat treatment Methods 0.000 claims description 29
- 229910021529 ammonia Inorganic materials 0.000 claims description 24
- 239000003054 catalyst Substances 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 11
- 230000002779 inactivation Effects 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N Nitrogen dioxide Chemical compound O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 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 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
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- 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
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- 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
- B01D53/8603—Removing sulfur compounds
- B01D53/8609—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—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
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/102—Oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
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- Engineering & Computer Science (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The present invention relates to a kind of low temperature charcoal base combined desulfurization and denitration flue gas system and its application method, wherein, the system includes completely identical in structure first reactor, second reactor and the 3rd reactor, first reactor, second reactor and the 3rd reactor include filling active carbon material in centrally located charcoal bedding layer, left and right sides cloth style grid and the left and right sides plenum chamber in outside, charcoal bedding layer.The present invention is by using identical three reactors, while having fine de-sulfur, denitration and regeneration function, fine de-sulfur, denitrification process series connection are in parallel with regenerative process, and can carry out simultaneously, really realize in-situ regeneration.The reactor of the present invention is made up of charcoal bedding layer, left and right sides cloth style grid and the left and right sides plenum chamber in center, and bed front face area is big, it is ensured that gas is evenly distributed in its work and regenerative process, and reduces occupation area of equipment.The present invention makes the desulphurization denitration performance of active carbon material be further enhanced.
Description
Technical field
Join the present invention relates to a kind of combined desulfurization and denitration flue gas system and its application method, more particularly to a kind of low temperature charcoal base
Close desulphurization denitration flue gas system and its application method.
Background technology
At present, in the flue gas desulfurization and denitrification technology of boiler of power plant, Industrial Boiler and industrial furnace, active carbon material
(such as activated coke) desulfurization combined purifying technique with its water saving, integrated purifying, non-secondary pollution, the low advantage of operation temperature at home
It has been applied outside.Due to the limited sorption capacity of active carbon material, lost activity after desulphurization denitration, must be by regeneration
Can activity recovery simultaneously recycle, therefore the regeneration of active carbon material is essential process in the technique use.
A kind of existing flue gas pollutant joint removal methods based on activity solid absorbent, the main body of this method is main
It is made up of the grey calcium circulation desulfurization (NGD) of high magnification, active carbon material fine de-sulfur and active carbon material denitrification apparatus, using direct heat
The mode of flue gas, solves the regeneration issues of active carbon material, realizes the reasonable employment of the energy, with higher desulfurization
Efficiency and denitration efficiency, achieve good effect.The regeneration of this method carbon material uses in-situ regeneration, but carbon material is used
In still can partly move, produce abrasion, and operate it is relative complex.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of low temperature charcoal base combined desulfurization and denitration flue gas system and its making
With method, problem present in existing process is further solved, desulphurization and denitration agent regenerative process can be realized simultaneously, it is real to realize
In-situ regeneration, and it is simple to operation, the desulphurization denitration performance of active carbon material is further enhanced.
To achieve the above object, the present invention takes following technical scheme：A kind of low temperature charcoal base combined desulfurization and denitration flue gas system
System, it is characterised in that it includes completely identical in structure first reactor, second reactor and the 3rd reactor, described first
Reactor, second reactor and the 3rd reactor include centrally located charcoal bedding layer, left and right sides cloth style grid and outside
Left and right sides plenum chamber, filling active carbon material in charcoal bedding layer；
Wherein, the left side plenum chamber of the first reactor is by connecting pipe and the outlet of NGD equipment, heating furnace and draws
Blower fan is connected, and sets first to switch on the connecting pipe of the outlet with the NGD equipment, heating furnace and air-introduced machine respectively
Valve, the 4th switching valve and the 3rd switching valve；The right side plenum chamber of the first reactor is set by connecting pipe with ammonia area and NGD
Standby entrance is connected, and respectively with set on the connecting pipe of the ammonia area and the entrance of NGD equipment the second switching valve and
5th switching valve；
The left side plenum chamber of the second reactor is by connecting pipe and the outlet of the NGD equipment, heating furnace and draws
Blower fan is connected, and sets the 6th to switch on the connecting pipe of the outlet with the NGD equipment, heating furnace and air-introduced machine respectively
Valve, the 9th switching valve and the 8th switching valve；The right side plenum chamber of the second reactor by connecting pipe and the ammonia area and
The entrance of NGD equipment is connected, and respectively with setting the 7th to switch on the connecting pipe of the ammonia area and the entrance of NGD equipment
Valve and the 8th switching valve；
The left side plenum chamber of 3rd reactor is by connecting pipe and the outlet of the NGD equipment, heating furnace and draws
Blower fan is connected, and respectively on the connecting pipe of the outlet with the NGD equipment, heating furnace and air-introduced machine set the tenth all
Change valve, the 14th switching valve and the 13rd switching valve；The right side plenum chamber of 3rd reactor by connecting pipe with it is described
Ammonia area is connected with the entrance of NGD equipment, and respectively with setting on the connecting pipe of the ammonia area and the entrance of NGD equipment
12 switching valves and the 15th switching valve.
A kind of application method of low temperature charcoal base combined desulfurization and denitration flue gas system, comprises the following steps：
1) by the first switching valve, the second switching valve, the 7th switching valve, the 8th switching valve, the 14th switching valve and the 15th
Switching valve is opened, and remaining switching valve is closed, and first reactor is used as denitration reaction as fine de-sulfur reactor, second reactor
Device, the 3rd reactor, as regeneration reactor, is now the first stage；
2) after the catalyst inactivation in first reactor of the first stage as fine de-sulfur reactor, the tenth is simultaneously closed off
Four switching valves and the 15th switching valve, open the 12nd switching valve and the 13rd switching valve, close the 8th switching valve；Is opened again
Six switching valves, close the first switching valve and the second switching valve, open the 4th switching valve and the 5th switching valve；So as to which first be reacted
Device switches to regeneration reactor；Second reactor is switched into fine de-sulfur reactor simultaneously, the 3rd reactor is switched into denitration
Reactor, is now second stage；
3) after the catalyst inactivation in second reactor of the second stage as fine de-sulfur reactor, the 4th is simultaneously closed off
Switching valve and the 5th switching valve, open the second switching valve and the 3rd switching valve, close the 13rd switching valve；Open again the tenth all
Valve is changed, the 6th switching valve and the 7th switching valve is closed, the 9th switching valve and the tenth switching valve is opened；So as to which second reactor be cut
Regeneration reactor is changed to, while the 3rd reactor is switched into fine de-sulfur reactor, first reactor is switched into denitration reaction
Device, is now the phase III；
4) after the catalyst inactivation in the 3rd reactor of the phase III as fine de-sulfur reactor, the 9th is simultaneously closed off
Switching valve and the tenth switching valve, open the 7th switching valve and the 8th switching valve, close the 3rd switching valve；The first switching is opened again
Valve, closes the 11st switching valve and the 12nd switching valve, opens the 14th switching valve and the 15th switching valve；So as to anti-by the 3rd
Answer device to switch to regeneration reactor, first reactor is switched into fine de-sulfur reactor, switches to denitration anti-second reactor
Device is answered, now system switches back into the first stage；So move in circles.
The flow direction for having completed the flue gas after thick desulfurization from NGD is advanced fine de-sulfur reactor, then enters Benitration reactor,
Fine de-sulfur, denitrification process series connection；Meanwhile, the heat smoke from heating furnace enters regeneration reactor, regenerative process and fine de-sulfur and
Denitrification process is in parallel；The flue gas completed after thick desulfurization from NGD enters the left side plenum chamber of fine de-sulfur reactor, then through a left side
The SO that side cloth style grid enter in the charcoal bedding layer of fine de-sulfur reactor, flue gas2Removed by active carbon material, with the water in flue gas
Generation H is combined with oxygen2SO4Absorption is in active carbon material hole；Remove SO2Flue gas afterwards enters right side through right side cloth style grid
Plenum chamber, the flue gas for going out fine de-sulfur reactor from right side plenum chamber is mixed with dilution ammonia, subsequently into the right side of Benitration reactor
Side plenum chamber, then the NO entered through right side cloth style grid in the charcoal bedding layer of Benitration reactor, flue gas is in the presence of catalyst,
Or by NH3Reduction generation N2And H2O takes away with flue gas, or by O in flue gas2Oxidation generation NO2, and adsorb in active carbon material hole
It is interior；Remove left side cloth style grid of the flue gas through Benitration reactor after NO and enter left side plenum chamber, plenum chamber goes out denitration from left side
The clean flue gas of reactor is discharged into air by air-introduced machine；Meanwhile, the heat smoke from heating furnace enters the left side of regeneration reactor
Plenum chamber, then through left side cloth style grid into the charcoal bedding layer of regeneration reactor, the regeneration gas that active carbon material is produced is by heating agent
Carry, through right side cloth style grid enter right side plenum chamber, the flue gas for going out regeneration reactor from right side plenum chamber return to before NGD with
The fresh smoke mixing that boiler is produced, subsequently into NGD, so as to realize in-situ regeneration.
The present invention is due to taking above technical scheme, and it has advantages below：1st, a kind of low temperature charcoal base of the invention joint
Desulphurization denitration flue gas system and its application method, by using identical three reactors, while having fine de-sulfur, denitration
And regeneration function, fine de-sulfur, denitrification process series connection are in parallel with regenerative process, and can carry out simultaneously, really realize in-situ regeneration.
2nd, a kind of low temperature charcoal base combined desulfurization and denitration flue gas system of the invention and its application method, take off due to having carried out depth before denitration
Sulphur, therefore reduce the influence to denitration reaction, it is ensured that denitration efficiency.3rd, a kind of low temperature charcoal base combined desulfurization of the invention takes off
Nitre flue gas system and its application method, Benitration reactor can be adjusted flexibly according to smoke behavior, when flue-gas temperature is higher than 100 DEG C
When, it is passed through the reducing agents such as ammonia and nitrogen oxides is reduced to nitrogen, when flue-gas temperature is less than 100 DEG C, passes through reactor carbon materials
Material bed catalyst oxidation generation nitrogen dioxide is simultaneously adsorbed, and sending into NGD desulfurizers by regenerative process absorbs.4th, of the invention one
Low temperature charcoal base combined desulfurization and denitration flue gas system and its application method are planted, as a result of identical fixed bed reactors, is passed through
Valve transfer realizes power and energy, has both improved the utilization rate and interchangeability of equipment, and quick, convenient switching can be realized again.5、
A kind of low temperature charcoal base combined desulfurization and denitration flue gas system and its application method of the present invention, reactor by center charcoal bedding layer,
Left and right sides cloth style grid and left and right sides plenum chamber composition, bed front face area are big, it is ensured that gas in its work and regenerative process
It is evenly distributed, and reduces occupation area of equipment.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of present invention work in the first stage；
Fig. 3 is the structural representation that the present invention is operated in second stage；
Fig. 4 is the structural representation that the present invention is operated in the phase III.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Charcoal base combined desulfurization and denitration flue gas system, is that the grey calcium circulating flue gas desulfurization (NGD) of high magnification is urged with charcoal based selective
Change the part of reduction and oxidation (C-SCR and C-SCO) denitrating flue gas coupling technique system, the flue gas after the thick desulfurization of NGD enters
Activated coke combined desulfurization and denitration device, completes fine de-sulfur and C-SCR and C-SCO denitrations.Whole bed after absorbent charcoal based catalyst inactivation
Regeneration, the heating agent that regeneration needs is a small amount of clean flue gas after circulating fan pressurizes and reheated through boiler furnace.Carbon material
The regeneration gas of generation carries out combined desulfurization and denitration device by heating agent, and it is mixed to return to the fresh smoke produced before NGD with boiler
Close, subsequently into NGD riser reactors, SO therein2、NO2Finally by the active Ca (OH) in circulating ash2Absorb and solidify,
Desulfurization degree more than 98%, denitration rate more than 90% finally can be achieved.
Based on above-mentioned principle, as shown in figure 1, a kind of low temperature charcoal base combined desulfurization and denitration flue gas system that the present invention is provided,
It includes first reactor A, second reactor B and the 3rd reactor C, first reactor A, second reactor B and the 3rd reaction
Device C is identical, and can not only be used for fine de-sulfur reactor, can also be used as Benitration reactor or regeneration reactor；First is anti-
Device A, second reactor B and the 3rd reactor C is answered to include charcoal bedding layer, left and right sides cloth style grid and the left and right sides gas collection in center
Filling active carbon material in case, charcoal bedding layer.
Wherein, first reactor A left side plenum chamber passes through connecting pipe and outlet, heating furnace and the air inducing of NGD equipment
Machine is connected, and sets the first switching valve A on the connecting pipe of the outlet with NGD equipment, heating furnace and air-introduced machine respectively1、
4th switching valve A4With the 3rd switching valve A3；First reactor A right side plenum chamber passes through connecting pipe and ammonia area and NGD equipment
Entrance be connected, and respectively with setting the second switching valve A on the connecting pipe of ammonia area and the entrance of NGD equipment2With the 5th
Switching valve A5.Second reactor B left side plenum chamber passes through connecting pipe and the outlet of NGD equipment, heating furnace and air-introduced machine phase
Connection, and the 6th switching valve B is set on the connecting pipe of the outlet with NGD equipment, heating furnace and air-introduced machine respectively1, the 9th
Switching valve B4With the 8th switching valve B3；Second reactor B right side plenum chamber is entered by connecting pipe and ammonia area and NGD equipment
Mouth is connected, and respectively with setting the 7th switching valve B on the connecting pipe of ammonia area and the entrance of NGD equipment2With the tenth switching
Valve B5.3rd reactor C left side plenum chamber is connected by connecting pipe with the outlet of NGD equipment, heating furnace and air-introduced machine,
And the 11st switching valve C is set on the connecting pipe of the outlet with NGD equipment, heating furnace and air-introduced machine respectively1, the 14th cut
Change valve C4With the 13rd switching valve C3；3rd reactor C right side plenum chamber is entered by connecting pipe and ammonia area and NGD equipment
Mouth is connected, and respectively with setting the 12nd switching valve C on the connecting pipe of ammonia area and the entrance of NGD equipment2With the 15th
Switching valve C5.By controlling the first to the 15th switching valve A1-A5、B1-B5And C1-C5Opening and closing, control the thick desulfurization from NGD
Flue gas, the heat smoke from heating furnace and the NH3 from ammonia area pass through first reactor A, second reactor B, the 3rd reactor C
Sequencing so that realize fine de-sulfur, denitration and regenerate three processes switching；And fine de-sulfur, denitrification process are connected, Ran Houyu
Regenerative process is in parallel, and fine de-sulfur and denitrification process are carried out simultaneously with regenerative process, really realize in-situ regeneration.
A kind of low temperature charcoal base combined desulfurization and denitration flue gas system of the present invention when in use, comprises the following steps：
1) as shown in Fig. 2 by the first switching valve A1, the second switching valve A2, the 7th switching valve B2, the 8th switching valve B3, the tenth
Four switching valve C4With the 15th switching valve C5Open, other switching valves are closed.The flue gas completed after thick desulfurization warp from NGD
First switching valve A1Plenum chamber on the left of into first reactor A, then enter first reactor A charcoal beddings through left side cloth style grid
SO in layer, flue gas2Removed by active carbon material, generation H is combined with the water and oxygen in flue gas2SO4Absorption is in active carbon material hole
In gap.Remove SO2Flue gas afterwards enters right side plenum chamber through right side cloth style grid, goes out first reactor A's from right side plenum chamber
Flue gas is in the second switching valve A2Afterwards at flue gas house steward, mixed with the dilution ammonia from ammonia-spraying grid.Increase the flue gas after ammonia through the
Seven switching valve B2Plenum chamber on the right side of into second reactor B, then enter second reactor B charcoals bedding layer through right side cloth style grid,
NO in flue gas is in the presence of catalyst, or by NH3Reduction generation N2And H2O takes away with flue gas, or by O in flue gas2Oxidation life
Into NO2, and adsorb in active carbon material hole.Remove the flue gas after NO and enter left through cloth style grid on the left of second reactor B
Side plenum chamber.Go out second reactor B clean flue gas through the 8th switching valve B from left side plenum chamber3Air is discharged into by air-introduced machine.Together
When, the heat smoke from heating furnace is through the 14th switching valve C4Plenum chamber on the left of into the 3rd reactor C, then through left side cloth style
Grid enter the 3rd reactor C charcoals bedding layer, and the regeneration gas that active carbon material is produced is carried by heating agent, entered through right side cloth style grid
Right side plenum chamber, the flue gas for going out the 3rd reactor C from right side plenum chamber returns to the fresh smoke produced before NGD with boiler and mixed
Close, subsequently into NGD riser reactors, so as to realize in-situ regeneration.The flow direction of flue gas is advanced fine de-sulfur reactor, then is entered
Benitration reactor, therefore first reactor A is fine de-sulfur reactor, second reactor B is Benitration reactor, the 3rd reactor C
It it is now the first stage for regeneration reactor.
2) as shown in figure 3, after catalyst inactivation in first reactor A of the first stage as fine de-sulfur reactor,
Simultaneously close off the 14th switching valve C4With the 15th switching valve C5, open the 12nd switching valve C2With the 13rd switching valve C3, close
8th switching valve B3；The 6th switching valve B is opened again1, close the first switching valve A1With the second switching valve A2, open the 4th switching valve A4
With the 5th switching valve A5；So as to which first reactor A is switched into regeneration reactor；Switch to essence de- second reactor B simultaneously
Reaction of Salmon-Saxl device, Benitration reactor is switched to by the 3rd reactor C, is now second stage.
3) as shown in figure 4, after catalyst inactivation in second reactor B of the second stage as fine de-sulfur reactor,
Simultaneously close off the 4th switching valve A4With the 5th switching valve A5, open the second switching valve A2With the 3rd switching valve A3, close the 13rd and cut
Change valve C3；The 11st switching valve C is opened again1, close the 6th switching valve B1With the 7th switching valve B2, open the 9th switching valve B4With
Ten switching valve B5；So as to which second reactor B is switched into regeneration reactor, while switching to fine de-sulfur anti-3rd reactor C
Device is answered, first reactor A is switched into Benitration reactor, is now the phase III.
4) after the catalyst inactivation in the 3rd reactor C of the phase III as fine de-sulfur reactor, is simultaneously closed off
Nine switching valve B4With the tenth switching valve B5, open the 7th switching valve B2With the 8th switching valve B3, close the 3rd switching valve A3；Open again
First switching valve A1, close the 11st switching valve C1With the 12nd switching valve C2, open the 14th switching valve C4With the 15th switching
Valve C5；So as to which the 3rd reactor C is switched into regeneration reactor, first reactor A is switched into fine de-sulfur reactor, by second
Reactor B switches to Benitration reactor, and now system switches back into the first stage.So move in circles, realize in-situ regeneration.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each part, set location and its connected mode etc.
It can all be varied from, every equivalents carried out on the basis of technical solution of the present invention and improvement should not be arranged
In addition in protection scope of the present invention.
Claims (3)
1. a kind of low temperature charcoal base combined desulfurization and denitration flue gas system, it is characterised in that it is anti-that it includes completely identical in structure first
Device, second reactor and the 3rd reactor are answered, the first reactor, second reactor and the 3rd reactor are included in being located at
The active carbon materials of filling in charcoal bedding layer, left and right sides cloth style grid and the left and right sides plenum chamber in outside of centre, the charcoal bedding layer
Material；
Wherein, the left side plenum chamber of the first reactor passes through connecting pipe and outlet, heating furnace and the air-introduced machine of NGD equipment
Be connected, and set respectively on the connecting pipe of the outlet with the NGD equipment, heating furnace and air-introduced machine the first switching valve,
4th switching valve and the 3rd switching valve；The right side plenum chamber of the first reactor passes through connecting pipe and ammonia area and NGD equipment
Entrance be connected, and respectively with setting the second switching valve and on the connecting pipe of the ammonia area and the entrance of NGD equipment
Five switching valves；
The left side plenum chamber of the second reactor passes through connecting pipe and outlet, heating furnace and the air-introduced machine of the NGD equipment
Be connected, and respectively on the connecting pipe of the outlet with the NGD equipment, heating furnace and air-introduced machine set the 6th switching valve,
9th switching valve and the 8th switching valve；The right side plenum chamber of the second reactor passes through connecting pipe and the ammonia area and NGD
The entrance of equipment is connected, and respectively with setting the 7th switching valve on the connecting pipe of the ammonia area and the entrance of NGD equipment
With the 8th switching valve；
The left side plenum chamber of 3rd reactor passes through connecting pipe and outlet, heating furnace and the air-introduced machine of the NGD equipment
It is connected, and sets the 11st to switch on the connecting pipe of the outlet with the NGD equipment, heating furnace and air-introduced machine respectively
Valve, the 14th switching valve and the 13rd switching valve；The right side plenum chamber of 3rd reactor passes through connecting pipe and the ammonia
Area is connected with the entrance of NGD equipment, and respectively with setting the tenth on the connecting pipe of the ammonia area and the entrance of NGD equipment
Two switching valves and the 15th switching valve.
2. a kind of application method of low temperature charcoal base combined desulfurization and denitration flue gas system, comprises the following steps：
1) by the first switching valve, the second switching valve, the 7th switching valve, the 8th switching valve, the 14th switching valve and the 15th switching
Valve is opened, and remaining switching valve is closed, and first reactor is as fine de-sulfur reactor, and second reactor is as Benitration reactor, and the
Three reactors, as regeneration reactor, are now the first stage；
2) after the catalyst inactivation in first reactor of the first stage as fine de-sulfur reactor, simultaneously close off the 14th and cut
Valve and the 15th switching valve are changed, the 12nd switching valve and the 13rd switching valve is opened, the 8th switching valve is closed；The 6th is opened again to cut
Valve is changed, the first switching valve and the second switching valve is closed, the 4th switching valve and the 5th switching valve is opened；So as to which first reactor be cut
It is changed to regeneration reactor；Second reactor is switched into fine de-sulfur reactor simultaneously, the 3rd reactor is switched into denitration reaction
Device, is now second stage；
3) after the catalyst inactivation in second reactor of the second stage as fine de-sulfur reactor, the 4th switching is simultaneously closed off
Valve and the 5th switching valve, open the second switching valve and the 3rd switching valve, close the 13rd switching valve；The 11st switching is opened again
Valve, closes the 6th switching valve and the 7th switching valve, opens the 9th switching valve and the tenth switching valve；So as to which second reactor be switched
For regeneration reactor, while the 3rd reactor is switched into fine de-sulfur reactor, first reactor is switched into Benitration reactor,
It is now the phase III；
4) after the catalyst inactivation in the 3rd reactor of the phase III as fine de-sulfur reactor, the 9th switching is simultaneously closed off
Valve and the tenth switching valve, open the 7th switching valve and the 8th switching valve, close the 3rd switching valve；The first switching valve is opened again, is closed
The 11st switching valve and the 12nd switching valve are closed, the 14th switching valve and the 15th switching valve is opened；So as to by the 3rd reactor
Regeneration reactor is switched to, first reactor is switched into fine de-sulfur reactor, second reactor is switched into Benitration reactor,
Now system switches back into the first stage；So move in circles.
3. a kind of application method of low temperature charcoal base combined desulfurization and denitration flue gas system as claimed in claim 2, it is characterised in that
The flow direction for having completed the flue gas after thick desulfurization from NGD is advanced fine de-sulfur reactor, then enters Benitration reactor, fine de-sulfur,
Denitrification process is connected；Meanwhile, the heat smoke from heating furnace enters regeneration reactor, regenerative process and fine de-sulfur and denitrification process
It is in parallel；
The flue gas completed after thick desulfurization from NGD enters the left side plenum chamber of fine de-sulfur reactor, then through left side cloth style
The SO that grid enter in the charcoal bedding layer of fine de-sulfur reactor, flue gas2Removed, combined with the water and oxygen in flue gas by active carbon material
Generate H2SO4Absorption is in active carbon material hole；Remove SO2Flue gas afterwards enters right side plenum chamber through right side cloth style grid, from
The flue gas that right side plenum chamber goes out fine de-sulfur reactor is mixed with dilution ammonia, subsequently into the right side plenum chamber of Benitration reactor,
The NO entered again through right side cloth style grid in the charcoal bedding layer of Benitration reactor, flue gas is in the presence of catalyst, or by NH3Also
It is primary into N2And H2O takes away with flue gas, or by O in flue gas2Oxidation generation NO2, and adsorb in active carbon material hole；Removing
Left side cloth style grid of the flue gas through Benitration reactor after NO enter left side plenum chamber, and from left side, plenum chamber goes out Benitration reactor
Clean flue gas is discharged into air by air-introduced machine；
Meanwhile, the heat smoke from heating furnace enters the left side plenum chamber of regeneration reactor, then enters again through left side cloth style grid
The charcoal bedding layer of raw reactor, the regeneration gas that active carbon material is produced is carried by heating agent, enters right side collection through right side cloth style grid
Gas tank, the flue gas for going out regeneration reactor from right side plenum chamber returns to the fresh smoke produced before NGD with boiler and mixed, Ran Houjin
Enter NGD, so as to realize in-situ regeneration.
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| CN110966613A (en) * | 2019-12-20 | 2020-04-07 | 煤科院节能技术有限公司 | Method and system for treating low-temperature denitration inactivation activated carbon material thermal regeneration waste gas |
| CN111495138A (en) * | 2020-04-26 | 2020-08-07 | 安徽顺达环保科技股份有限公司 | Desulfurization and denitrification equipment and process capable of circularly accelerating flue gas cracking catalysis |
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