CN209054576U - A kind of low-temp desulfurization denitrification integral equipment - Google Patents
A kind of low-temp desulfurization denitrification integral equipment Download PDFInfo
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- CN209054576U CN209054576U CN201821729653.3U CN201821729653U CN209054576U CN 209054576 U CN209054576 U CN 209054576U CN 201821729653 U CN201821729653 U CN 201821729653U CN 209054576 U CN209054576 U CN 209054576U
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- Prior art keywords
- condensation
- desulphurization denitration
- flue gas
- denitration tower
- tower
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 39
- 230000023556 desulfurization Effects 0.000 title claims abstract description 33
- 238000009833 condensation Methods 0.000 claims abstract description 86
- 230000005494 condensation Effects 0.000 claims abstract description 86
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000003546 flue gas Substances 0.000 claims abstract description 74
- 239000003517 fume Substances 0.000 claims abstract description 31
- 239000000428 dust Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000012856 packing Methods 0.000 claims abstract description 25
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 23
- 239000002904 solvent Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 49
- 239000002699 waste material Substances 0.000 claims description 37
- 235000019738 Limestone Nutrition 0.000 claims description 20
- 239000006028 limestone Substances 0.000 claims description 20
- 238000000605 extraction Methods 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 4
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 22
- 239000002253 acid Substances 0.000 abstract description 15
- 239000000356 contaminant Substances 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 9
- 239000007787 solid Substances 0.000 abstract description 8
- 238000000746 purification Methods 0.000 abstract description 6
- 239000003595 mist Substances 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 17
- 239000002923 metal particle Substances 0.000 description 9
- 239000004071 soot Substances 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000005345 coagulation Methods 0.000 description 6
- 230000015271 coagulation Effects 0.000 description 6
- 239000005416 organic matter Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 238000003916 acid precipitation Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000003009 desulfurizing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005367 electrostatic precipitation Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000013528 metallic particle Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of low-temp desulfurization denitrification integral equipment, including fume dust remover, and condensation desulphurization denitration tower and chimney；The condensation desulphurization denitration tower includes the poly- cooler of miniature Venturi type and suitable solvents atomizing layer and packing layer；Due to the double action for condensing and absorbing, increase the absorptivity of gaseous pollutant, cigarette ash and weight solid metal recycle in deduster, and acid contaminant and gaseous state heavy metal recycle in condensing tower, reduce work difficulty, increase working efficiency, since the moisture in flue gas is largely condensed, reduce purified flue gas water content, so that white cigarette mist will not be generated, and due to the degree of purification of flue gas height, the outlet temperature of flue gas is low, it is possible to reduce the height of chimney, and heat recovery is carried out to flue gas, capacity usage ratio can be increased, reduce cost.
Description
Technical field
The utility model relates to a kind of low-temp desulfurization denitrification integral equipment.
Background technique
" acid rain " is one of puzzlement global environment problem." acid rain " to soil, crops, forest, lake, fish, build
It is very big to build the harm such as object, seriously destroys ecological environment, " acid rain " has compromised many areas in the world.With world wide
Interior that environmental protection requirement is continuously improved, China is also increasingly stringenter the discharge standard of flue gas, for dry method, due to catching
Collection ability is limited, low efficiency, amount of by-products are big, and there is the danger of blocking, thus is eliminated；Wet process is since humidity increases, cigarette
Chimney discharge smog is serious, and many places cannot use；And opposite more half wet process is limited for heavy metal taking-up, it is necessary to
The dosage and other equipment for increasing active carbon, increase the amount of cost and solid byproducts, and process flow is compared with unmanageable.
Utility model content
The technical problem to be solved by the present invention is to provide it is a kind of it is structurally reasonable, for flue gas low-temperature desulphurization denitration one
Body equipment, Lai Tigao denitrification efficiency and reduction cost.
To solve the above-mentioned problems, the utility model adopts the following technical solution:
A kind of low-temp desulfurization denitrification integral equipment, including fume dust remover, and be arranged in fume dust remover side
, condensation desulphurization denitration tower for being further processed to flue gas, and the chimney of condensation desulphurization denitration tower side is set；It is described
Condensing desulphurization denitration tower includes condensation desulphurization denitration tower ontology, and the miniature Wen of condensation desulphurization denitration tower body interior is arranged in
The poly- cooler of tubular type, and be arranged in condensation desulphurization denitration tower body interior and be located at the poly- cooler of miniature Venturi type above
Suitable solvents atomizing layer, and be arranged in condensation desulphurization denitration tower body interior and be located at suitable solvents atomizing layer on
The packing layer of side.
Further, be provided with heat-exchangers of the plate type outside the condensation desulphurization denitration tower, the heat-exchangers of the plate type with
The miniature poly- cooler connection of Venturi type.
Further, it is provided with lye tank (vat) outside the condensation desulphurization denitration tower, the lye tank (vat) is connect with packing layer, institute
It states and is provided with circulating pump between lye tank (vat) and packing layer.
Further, condensation desulphurization denitration tower bottom end side is connected with air blower, the condensation desulphurization denitration tower bottom
The end other side is connected with water pump, and the water pump is connected with waste liquid tank, and the waste liquid tank is connected with pulverized limestone feed bin.
Further, condensation desulphurization denitration tower top end is provided with high efficiency demister, and the high efficiency demister is connected with
Tower top air-introduced machine, the tower top air-introduced machine are connect with chimney.
Further, heat regenerator is provided between the fume dust remover and condensation desulphurization denitration tower, the heat is returned
Receiving device includes the first heat regenerator, and the second heat regenerator connecting with the first heat regenerator side, first heat regenerator
The other side is connected with air-introduced machine, and the air-introduced machine is connect with fume dust remover, and second heat regenerator and condensation desulfurization are de-
The connection of nitre tower.
Further, the fume dust remover is connected with boiler, and the fume dust remover and boiler are connected with cigarette ash
Basin.
The beneficial effects of the utility model are: increasing the suction of gaseous pollutant due to the double action for condensing and absorbing
Yield, cigarette ash and weight solid metal recycles in deduster and acid contaminant and gaseous state heavy metal recycle in condensing tower,
Work difficulty is reduced, working efficiency is increased, since the moisture in flue gas is largely condensed, reduces purified flue gas and contains
Water, so that white cigarette mist will not be generated, and due to the degree of purification of flue gas height, the outlet temperature of flue gas is low, it is possible to reduce chimney
Height, and heat recovery is carried out to flue gas, can increase capacity usage ratio, reduce cost.
Detailed description of the invention
Fig. 1 is a kind of low-temp desulfurization denitrification integral equipment overall structure schematic diagram of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
As shown in fig.1, a kind of low-temp desulfurization denitrification integral equipment, including fume dust remover 1, and be arranged in flue gas
1 side of dust-extraction unit, condensation desulphurization denitration tower 2 for being further processed to flue gas, and setting is in condensation desulphurization denitration tower 2
The chimney 3 of side；The fume dust remover 1 is connected with boiler 11, and the fume dust remover 1 is connected with cigarette ash with boiler 11
Basin 12, for collecting the soot particulates deposited in boiler 11 and fume dust remover 1 and solid-state heavy metal particles；The condensation
Desulphurization denitration tower 2 include condensation desulphurization denitration tower ontology 21, and be arranged in condensation desulphurization denitration tower ontology 21 inside, be used for cigarette
Gas gathers the poly- cooler 22 of cold miniature Venturi type, and is arranged in inside condensation desulphurization denitration tower ontology 21 and is located at miniature
22 top of the poly- cooler of Venturi type, the solubility for absorbing the acid contaminant in flue gas, organic matter and heavy metal it is molten
Agent atomizing layer 23, and be arranged in it is inside condensation desulphurization denitration tower ontology 21 and be located at it is above suitable solvents atomizing layer 23,
For the packing layer 24 of flue gas deep desulfuration, the 2 bottom end side of condensation desulphurization denitration tower is connected with for condensation desulfurization to be discharged
The air blower 25 of 2 inside smoke of denitrating tower, 2 top of condensation desulphurization denitration tower is provided with high efficiency demister 26, described efficient
Demister 26 is connected with tower top air-introduced machine 27, and the tower top air-introduced machine 27 is connect with chimney 3, and flue gas can pass through high efficiency demister 26
It is discharged after entering chimney 3 after progress demisting, the 2 bottom end other side of condensation desulphurization denitration tower is connected with water pump 28, the water pump
28 are connected with waste liquid tank 4, and the waste liquid tank 4 is connected with pulverized limestone feed bin 41, and condensation desulphurization denitration tower 2 is deposited on after purification
The waste liquid of bottom is pumped into waste liquid tank 4 via water pump 28, then the pulverized limestone in pulverized limestone feed bin 41 is poured into waste liquid tank 4 and is carried out
It neutralizes, heat-exchangers of the plate type 5, the heat-exchangers of the plate type 5 and miniature Venturi tube is provided with outside the condensation desulphurization denitration tower 2
The poly- cooler 22 of formula connects, and coagulation liquid is cooled down, is provided with lye tank (vat) 6, the alkali outside the condensation desulphurization denitration tower 2
Liquid bath 6 is connect with packing layer 24, is provided with circulating pump 61 between the lye tank (vat) 6 and packing layer 24, can to packing layer 24 into
Row supplement desulfurizing agent, is provided with heat regenerator 7 between the fume dust remover 1 and condensation desulphurization denitration tower 2, carries out to flue gas
Heat recovery, the heat regenerator 7 include the first heat regenerator 71, and the second heat connecting with 71 side of the first heat regenerator is returned
Device 72 is received, 71 other side of the first heat regenerator is connected with air-introduced machine 73, and the air-introduced machine 73 connects with fume dust remover 1
It connects, second heat regenerator 72 is connect with condensation desulphurization denitration tower 2.
In conjunction with Fig. 1, a kind of desulphurization denitration process of low-temp desulfurization denitrification integral equipment of the utility model, including following step
It is rapid:
1) flue gas that boiler 11 generates first has carried out preliminary dedusting in boiler 11, leaves the larger cigarette ash in flue gas
Particle and solid-state heavy metal particles, then by carrying out electrostatic precipitation inside dust-extraction unit 1, dust-extraction unit 1 passes through Electrostatic Absorption
Small soot particulates and solid metallic particle in effect absorption flue gas, soot particulates that boiler 11 and dust-extraction unit 1 deposit and
Solid-state heavy metal particles are packed into the cigarette ash basin 12 of connection and are stored；
2) flue gas by step 1) processing is entered in the first heat regenerator 71 by air-introduced machine 73 carries out preliminary heat time
It receives, the medium of the first heat regenerator 71 is cold water, obtains hot water, is entered and first by the flue gas that the first heat regenerator 71 is handled
The second heat regenerator 72 that heat regenerator 71 connects carries out second of heat recovery, and the medium of the second heat regenerator 72 is air,
Obtain heating combustion air；
3) flue gas by step 2) processing enters in condensation desulphurization denitration tower 2, and enters the poly- cooling of miniature Venturi type
It is cooled to 38 DEG C by poly- in device 22, makes the temperature dew-point temperature of flue gas hereinafter, absorbing in flue gas largely to generate condensed water
HCI, part SOx, NOX and removal heavy metal vapor, the heat-exchangers of the plate type 5 connecting with the poly- cooler 22 of miniature Venturi type can
Coagulation liquid is cooled to 35 DEG C, guarantee that condensation process is executing always；
4) flue gas by step 3) processing enters suitable solvents atomizing layer 23, and with it is therein in micro- liquid it is granular can
Soluble solvent is contacted, and acid contaminant, organic matter and heavy metal in flue gas are absorbed；
5) flue gas by step 4) processing enters packing layer 24, and packing layer 24 is carried out by the lye tank (vat) 6 outside connection tower
Lye, which is recycled and controlled by pH, carries out deep desulfuration, and the pH value for controlling doctor solution is 9.5, and the flue gas by desulfurization process is logical
It crosses after high efficiency demister 26 removes microlayer model and chimney 3 is poured by tower top air-introduced machine 27 is discharged；
6) by step 3), step 4) and step 5) processing be deposited on condensation 2 bottom of desulphurization denitration tower acid waste liquid by
Water pump 28 is discharged into waste liquid tank 4, then the pulverized limestone in pulverized limestone feed bin 41 is poured into waste liquid tank 4 and in acid waste liquid progress
With waste liquid per ton pours into 14kg pulverized limestone；
7) acid waste liquid that step 6) neutralizes is discharged into after sewage treatment plant is further processed and is discharged.
Embodiment 2
As shown in fig.1, a kind of low-temp desulfurization denitrification integral equipment, including fume dust remover 1, and be arranged in flue gas
1 side of dust-extraction unit, condensation desulphurization denitration tower 2 for being further processed to flue gas, and setting is in condensation desulphurization denitration tower 2
The chimney 3 of side；The fume dust remover 1 is connected with boiler 11, and the fume dust remover 1 is connected with cigarette ash with boiler 11
Basin 12, for collecting the soot particulates deposited in boiler 11 and fume dust remover 1 and solid-state heavy metal particles；The condensation
Desulphurization denitration tower 2 include condensation desulphurization denitration tower ontology 21, and be arranged in condensation desulphurization denitration tower ontology 21 inside, be used for cigarette
Gas gathers the poly- cooler 22 of cold miniature Venturi type, and is arranged in inside condensation desulphurization denitration tower ontology 21 and is located at miniature
22 top of the poly- cooler of Venturi type, the solubility for absorbing the acid contaminant in flue gas, organic matter and heavy metal it is molten
Agent atomizing layer 23, and be arranged in it is inside condensation desulphurization denitration tower ontology 21 and be located at it is above suitable solvents atomizing layer 23,
For the packing layer 24 of flue gas deep desulfuration, the 2 bottom end side of condensation desulphurization denitration tower is connected with for condensation desulfurization to be discharged
The air blower 25 of 2 inside smoke of denitrating tower, 2 top of condensation desulphurization denitration tower is provided with high efficiency demister 26, described efficient
Demister 26 is connected with tower top air-introduced machine 27, and the tower top air-introduced machine 27 is connect with chimney 3, and flue gas can pass through high efficiency demister 26
It is discharged after entering chimney 3 after progress demisting, the 2 bottom end other side of condensation desulphurization denitration tower is connected with water pump 28, the water pump
28 are connected with waste liquid tank 4, and the waste liquid tank 4 is connected with pulverized limestone feed bin 41, and condensation desulphurization denitration tower 2 is deposited on after purification
The waste liquid of bottom is pumped into waste liquid tank 4 via water pump 28, then the pulverized limestone in pulverized limestone feed bin 41 is poured into waste liquid tank 4 and is carried out
It neutralizes, heat-exchangers of the plate type 5, the heat-exchangers of the plate type 5 and miniature Venturi tube is provided with outside the condensation desulphurization denitration tower 2
The poly- cooler 22 of formula connects, and coagulation liquid is cooled down, is provided with lye tank (vat) 6, the alkali outside the condensation desulphurization denitration tower 2
Liquid bath 6 is connect with packing layer 24, is provided with circulating pump 61 between the lye tank (vat) 6 and packing layer 24, can to packing layer 24 into
Row supplement desulfurizing agent, is provided with heat regenerator 7 between the fume dust remover 1 and condensation desulphurization denitration tower 2, carries out to flue gas
Heat recovery, the heat regenerator 7 include the first heat regenerator 71, and the second heat connecting with 71 side of the first heat regenerator is returned
Device 72 is received, 71 other side of the first heat regenerator is connected with air-introduced machine 73, and the air-introduced machine 73 connects with fume dust remover 1
It connects, second heat regenerator 72 is connect with condensation desulphurization denitration tower 2.
In conjunction with Fig. 1, a kind of desulphurization denitration process of low-temp desulfurization denitrification integral equipment of the utility model, including following step
It is rapid:
1) flue gas that boiler 11 generates first has carried out preliminary dedusting in boiler 11, leaves the larger cigarette ash in flue gas
Particle and solid-state heavy metal particles, then by carrying out electrostatic precipitation inside dust-extraction unit 1, dust-extraction unit 1 passes through Electrostatic Absorption
Small soot particulates and solid metallic particle in effect absorption flue gas, soot particulates that boiler 11 and dust-extraction unit 1 deposit and
Solid-state heavy metal particles are packed into the cigarette ash basin 12 of connection and are stored；
2) flue gas by step 1) processing is entered in the first heat regenerator 71 by air-introduced machine 73 carries out preliminary heat time
It receives, the medium of the first heat regenerator 71 is cold water, obtains hot water, is entered and first by the flue gas that the first heat regenerator 71 is handled
The second heat regenerator 72 that heat regenerator 71 connects carries out second of heat recovery, and the medium of the second heat regenerator 72 is air,
Obtain heating combustion air；
3) flue gas by step 2) processing enters in condensation desulphurization denitration tower 2, and enters the poly- cooling of miniature Venturi type
It is cooled to 28 DEG C by poly- in device 22, makes the temperature dew-point temperature of flue gas hereinafter, absorbing in flue gas largely to generate condensed water
HCI, part SOx, NOX and removal heavy metal vapor, the heat-exchangers of the plate type 5 connecting with the poly- cooler 22 of miniature Venturi type can
Coagulation liquid is cooled to 25 DEG C, guarantee that condensation process is executing always；
4) flue gas by step 3) processing enters suitable solvents atomizing layer 23, and with it is therein in micro- liquid it is granular can
Soluble solvent is contacted, and acid contaminant, organic matter and heavy metal in flue gas are absorbed；
5) flue gas by step 4) processing enters packing layer 24, and packing layer 24 is carried out by the lye tank (vat) 6 outside connection tower
Lye, which is recycled and controlled by pH, carries out deep desulfuration, and the pH value for controlling doctor solution is 8.5, and the flue gas by desulfurization process is logical
It crosses after high efficiency demister 26 removes microlayer model and chimney 3 is poured by tower top air-introduced machine 27 is discharged；
6) by step 3), step 4) and step 5) processing be deposited on condensation 2 bottom of desulphurization denitration tower acid waste liquid by
Water pump 28 is discharged into waste liquid tank 4, then the pulverized limestone in pulverized limestone feed bin 41 is poured into waste liquid tank 4 and in acid waste liquid progress
With waste liquid per ton pours into 10kg pulverized limestone；
7) acid waste liquid that step 6) neutralizes is discharged into after sewage treatment plant is further processed and is discharged.
Embodiment 3
As shown in fig.1, a kind of low-temp desulfurization denitrification integral equipment, including fume dust remover 1, and be arranged in flue gas
1 side of dust-extraction unit, condensation desulphurization denitration tower 2 for being further processed to flue gas, and setting is in condensation desulphurization denitration tower 2
The chimney 3 of side；The fume dust remover 1 is connected with boiler 11, and the fume dust remover 1 is connected with cigarette ash with boiler 11
Basin 12, for collecting the soot particulates deposited in boiler 11 and fume dust remover 1 and solid-state heavy metal particles；The condensation
Desulphurization denitration tower 2 include condensation desulphurization denitration tower ontology 21, and be arranged in condensation desulphurization denitration tower ontology 21 inside, be used for cigarette
Gas gathers the poly- cooler 22 of cold miniature Venturi type, and is arranged in inside condensation desulphurization denitration tower ontology 21 and is located at miniature
22 top of the poly- cooler of Venturi type, the solubility for absorbing the acid contaminant in flue gas, organic matter and heavy metal it is molten
Agent atomizing layer 23, and be arranged in it is inside condensation desulphurization denitration tower ontology 21 and be located at it is above suitable solvents atomizing layer 23,
For the packing layer 24 of flue gas deep desulfuration, the 2 bottom end side of condensation desulphurization denitration tower is connected with for condensation desulfurization to be discharged
The air blower 25 of 2 inside smoke of denitrating tower, 2 top of condensation desulphurization denitration tower is provided with high efficiency demister 26, described efficient
Demister 26 is connected with tower top air-introduced machine 27, and the tower top air-introduced machine 27 is connect with chimney 3, and flue gas can pass through high efficiency demister 26
It is discharged after entering chimney 3 after progress demisting, the 2 bottom end other side of condensation desulphurization denitration tower is connected with water pump 28, the water pump
28 are connected with waste liquid tank 4, and the waste liquid tank 4 is connected with pulverized limestone feed bin 41, and condensation desulphurization denitration tower 2 is deposited on after purification
The waste liquid of bottom is pumped into waste liquid tank 4 via water pump 28, then the pulverized limestone in pulverized limestone feed bin 41 is poured into waste liquid tank 4 and is carried out
It neutralizes, heat-exchangers of the plate type 5, the heat-exchangers of the plate type 5 and miniature Venturi tube is provided with outside the condensation desulphurization denitration tower 2
The poly- cooler 22 of formula connects, and coagulation liquid is cooled down, is provided with lye tank (vat) 6, the alkali outside the condensation desulphurization denitration tower 2
Liquid bath 6 is connect with packing layer 24, is provided with circulating pump 61 between the lye tank (vat) 6 and packing layer 24, can to packing layer 24 into
Row supplement desulfurizing agent, is provided with heat regenerator 7 between the fume dust remover 1 and condensation desulphurization denitration tower 2, carries out to flue gas
Heat recovery, the heat regenerator 7 include the first heat regenerator 71, and the second heat connecting with 71 side of the first heat regenerator is returned
Device 72 is received, 71 other side of the first heat regenerator is connected with air-introduced machine 73, and the air-introduced machine 73 connects with fume dust remover 1
It connects, second heat regenerator 72 is connect with condensation desulphurization denitration tower 2.
In conjunction with Fig. 1, a kind of desulphurization denitration process of low-temp desulfurization denitrification integral equipment of the utility model, including following step
It is rapid:
1) flue gas that boiler 11 generates first has carried out preliminary dedusting in boiler 11, leaves the larger cigarette ash in flue gas
Particle and solid-state heavy metal particles, then by carrying out electrostatic precipitation inside dust-extraction unit 1, dust-extraction unit 1 passes through Electrostatic Absorption
Small soot particulates and solid metallic particle in effect absorption flue gas, soot particulates that boiler 11 and dust-extraction unit 1 deposit and
Solid-state heavy metal particles are packed into the cigarette ash basin 12 of connection and are stored；
2) flue gas by step 1) processing is entered in the first heat regenerator 71 by air-introduced machine 73 carries out preliminary heat time
It receives, the medium of the first heat regenerator 71 is cold water, obtains hot water, is entered and first by the flue gas that the first heat regenerator 71 is handled
The second heat regenerator 72 that heat regenerator 71 connects carries out second of heat recovery, and the medium of the second heat regenerator 72 is air,
Obtain heating combustion air；
3) flue gas by step 2) processing enters in condensation desulphurization denitration tower 2, and enters the poly- cooling of miniature Venturi type
It is cooled to 33 DEG C by poly- in device 22, makes the temperature dew-point temperature of flue gas hereinafter, absorbing in flue gas largely to generate condensed water
HCI, part SOx, NOX and removal heavy metal vapor, the heat-exchangers of the plate type 5 connecting with the poly- cooler 22 of miniature Venturi type can
Coagulation liquid is cooled to 30 DEG C, guarantee that condensation process is executing always；
4) flue gas by step 3) processing enters suitable solvents atomizing layer 23, and with it is therein in micro- liquid it is granular can
Soluble solvent is contacted, and acid contaminant, organic matter and heavy metal in flue gas are absorbed；
5) flue gas by step 4) processing enters packing layer 24, and packing layer 24 is carried out by the lye tank (vat) 6 outside connection tower
Lye, which is recycled and controlled by pH, carries out deep desulfuration, and the pH value for controlling doctor solution is 9, passes through by the flue gas of desulfurization process
Chimney 3 is poured by tower top air-introduced machine 27 after the removing microlayer model of high efficiency demister 26 to be discharged；
6) by step 3), step 4) and step 5) processing be deposited on condensation 2 bottom of desulphurization denitration tower acid waste liquid by
Water pump 28 is discharged into waste liquid tank 4, then the pulverized limestone in pulverized limestone feed bin 41 is poured into waste liquid tank 4 and in acid waste liquid progress
With waste liquid per ton pours into 12kg pulverized limestone；
7) acid waste liquid that step 6) neutralizes is discharged into after sewage treatment plant is further processed and is discharged.
Experimental example:
Experimental subjects: dry desulfurization denitration device, method desulphurization denitration equipment, wet desulphurization denitration device and this Shen semi-moist
Low-temp desulfurization denitrification integral equipment please.
Experimental method: control group one uses dry desulfurization denitration device, and control group two is set using method desulphurization denitration semi-moist
Standby, control group three uses a kind of low-temp desulfurization denitrification integral equipment of the application using wet desulphurization denitration device and experimental group
Carry out fume treatment.
Table 1 is four kinds of equipment fume treatment information
Table 1
In conjunction with table 1, compare dry desulfurization denitration device, method desulphurization denitration equipment semi-moist, wet desulphurization denitration device and
A kind of a kind of low-temp desulfurization denitrification integral equipment of the application, it can be seen that low-temp desulfurization denitrification integral equipment of the application
Not only reactant dosage is few, and solid byproducts amount is few, and no white cigarette mist and operation operation are simple, additionally it is possible to reduce use cost.
The beneficial effects of the utility model are: increasing the suction of gaseous pollutant due to the double action for condensing and absorbing
Yield, cigarette ash and weight solid metal recycles in deduster and acid contaminant and gaseous state heavy metal recycle in condensing tower,
Work difficulty is reduced, working efficiency is increased, since the moisture in flue gas is largely condensed, reduces purified flue gas and contains
Water, so that white cigarette mist will not be generated, and due to the degree of purification of flue gas height, the outlet temperature of flue gas is low, it is possible to reduce chimney
Height, and heat recovery is carried out to flue gas, can increase capacity usage ratio, reduce cost.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, any change or replacement expected without creative work should all be covered within the protection scope of the present utility model.
Claims (7)
1. a kind of low-temp desulfurization denitrification integral equipment, it is characterised in that: including fume dust remover, and be arranged in flue gas ash removal
Device side, condensation desulphurization denitration tower for being further processed to flue gas, and condensation desulphurization denitration tower side is set
Chimney；The condensation desulphurization denitration tower includes condensation desulphurization denitration tower ontology, and setting in condensation desulphurization denitration tower body interior
The poly- cooler of miniature Venturi type, and condensation desulphurization denitration tower body interior is set and to be located at miniature Venturi type poly-
Suitable solvents atomizing layer above cooler, and condensation desulphurization denitration tower body interior is set and be located at soluble molten
Packing layer above agent atomizing layer.
2. a kind of low-temp desulfurization denitrification integral equipment as described in claim 1, it is characterised in that: the condensation desulphurization denitration
Heat-exchangers of the plate type is provided with outside tower, the heat-exchangers of the plate type is connect with the poly- cooler of miniature Venturi type.
3. a kind of low-temp desulfurization denitrification integral equipment as described in claim 1, it is characterised in that: the condensation desulphurization denitration
Lye tank (vat) is provided with outside tower, the lye tank (vat) is connect with packing layer, is provided with circulating pump between the lye tank (vat) and packing layer.
4. a kind of low-temp desulfurization denitrification integral equipment as described in claim 1, it is characterised in that: the condensation desulphurization denitration
Tower bottom end side is connected with air blower, and the condensation desulphurization denitration tower bottom end other side is connected with water pump, and the water pump is connected with
Waste liquid tank, the waste liquid tank are connected with pulverized limestone feed bin.
5. a kind of low-temp desulfurization denitrification integral equipment as described in claim 1, it is characterised in that: the condensation desulphurization denitration
Tower top end is provided with high efficiency demister, and the high efficiency demister is connected with tower top air-introduced machine, and the tower top air-introduced machine and chimney connect
It connects.
6. a kind of low-temp desulfurization denitrification integral equipment as described in claim 1, it is characterised in that: the fume dust remover
Heat regenerator is provided between condensation desulphurization denitration tower, the heat regenerator includes the first heat regenerator, and is returned with the first heat
The second heat regenerator of device side connection is received, first heat regenerator other side is connected with air-introduced machine, the air-introduced machine and cigarette
The connection of gas dust-extraction unit, second heat regenerator are connect with condensation desulphurization denitration tower.
7. a kind of low-temp desulfurization denitrification integral equipment as described in claim 1, it is characterised in that: the fume dust remover
It is connected with boiler, the fume dust remover and boiler are connected with cigarette ash basin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821729653.3U CN209054576U (en) | 2018-10-24 | 2018-10-24 | A kind of low-temp desulfurization denitrification integral equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821729653.3U CN209054576U (en) | 2018-10-24 | 2018-10-24 | A kind of low-temp desulfurization denitrification integral equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209054576U true CN209054576U (en) | 2019-07-02 |
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|---|---|---|---|
| CN201821729653.3U Expired - Fee Related CN209054576U (en) | 2018-10-24 | 2018-10-24 | A kind of low-temp desulfurization denitrification integral equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209054576U (en) |
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2018
- 2018-10-24 CN CN201821729653.3U patent/CN209054576U/en not_active Expired - Fee Related
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