CN109489057A - The absorption boiler flue gas treatment system of twin-stage - Google Patents
The absorption boiler flue gas treatment system of twin-stage Download PDFInfo
- Publication number
- CN109489057A CN109489057A CN201811489944.4A CN201811489944A CN109489057A CN 109489057 A CN109489057 A CN 109489057A CN 201811489944 A CN201811489944 A CN 201811489944A CN 109489057 A CN109489057 A CN 109489057A
- Authority
- CN
- China
- Prior art keywords
- pipe
- regenerator
- absorber
- flue gas
- reactivator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003546 flue gas Substances 0.000 title claims abstract description 101
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 63
- 239000006096 absorbing agent Substances 0.000 claims abstract description 106
- 239000000779 smoke Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000010865 sewage Substances 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 8
- 238000010079 rubber tapping Methods 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 51
- 230000000694 effects Effects 0.000 abstract description 19
- 239000003595 mist Substances 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 239000000498 cooling water Substances 0.000 description 14
- 238000004064 recycling Methods 0.000 description 14
- 239000002918 waste heat Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 11
- 238000002485 combustion reaction Methods 0.000 description 10
- 230000008929 regeneration Effects 0.000 description 10
- 238000011069 regeneration method Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000003517 fume Substances 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 8
- 230000009467 reduction Effects 0.000 description 8
- 239000007921 spray Substances 0.000 description 8
- 238000009835 boiling Methods 0.000 description 7
- 235000019504 cigarettes Nutrition 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- -1 flue gas Compound Chemical class 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011552 falling film Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- 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
- B01D53/14—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 absorption
- B01D53/1425—Regeneration of liquid absorbents
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
- F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
- F28D21/0007—Water heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/306—Alkali metal compounds of potassium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/70—Condensing contaminants with coolers
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention provides a kind of absorption boiler flue gas treatment systems of twin-stage, including condensing unit, first absorber, first regenerator, second absorber and Second reactivator, boiler sequentially concatenates the first regenerator of connection by flue, condensing unit, first absorber, second absorber, first regenerator is connected to by the first inlet tube and the first drain pipe with the first absorber, first regenerator is connected to by jet chimney with Second reactivator, Second reactivator is connected to by the second inlet tube and the second drain pipe with the second absorber, Second reactivator is connected to by combustion-aid air pipe with boiler.The present invention can achieve the effect that with lower cost-effective Mist heat recovering and moisture, the content for avoiding soluble nitrogen oxide in flue gas that nitrogen oxides in smoke evacuation is polluted, reduced to hygroscopic solution.
Description
Technical field
The present invention relates to boiler smoke processing technology fields, refer in particular to a kind of absorption boiler smoke processing system of twin-stage
System.
Background technique
With the propulsion of gas replacing coal project, gas fired-boiler in heating using more and more extensive.The row of gas fired-boiler
Cigarette water capacity (water vapour content) is significantly larger than the water capacity of coal-burning boiler, and vapor carries a large amount of latent heat, waste heat recycling
Potentiality are very big.Existing flue gas waste heat recovery mode mainly has condensing waste heat recycling (condensing boiler), electric compression heat pump waste heat
Recycling, the recycling of enclosed absorption heat pump waste heat, the open type absorbent formula residual neat recovering system based on solution dehumidification technology.
But it finds in existing waste heat and moisture removal process, using pure electric compression heat pump, need to will be heated back by heat pump
Coolant-temperature gage is reduced to the dew-point temperature of flue gas hereinafter, since the electricity charge are higher, causes the operating cost of Mist heat recovering higher.It closes
Formula/open absorption heat pump often uses natural gas direct combustion as heat source, needs additionally to lay natural gas line and flue, system
Complicated and cost is higher.And flue gas and circulation are situated between currently based on the open type absorbent formula residual neat recovering system of solution dehumidification technology
Matter (solution) directly contacts, and more serious pollution can be caused to solution, and nitrogen oxides emission reduction is not also significant.Therefore how to have
Effect Mist heat recovering and moisture under the premise of reduce cost, reduce flue gas in nitrogen oxides opposite opened absorption system in inhale
Wet solution pollutes and improves nitrogen oxides emission reduction effect as those skilled in the art's urgent problem to be solved.
Summary of the invention
The object of the present invention is to provide a kind of absorption boiler flue gas treatment system of twin-stage, with solve existing fume treatment at
This height, nitrogen oxides in effluent opposite opened absorption system hygroscopic solution, which pollute, and nitrogen oxides emission reduction effect is bad asks
Topic.
In order to achieve the above objectives, the present invention provides a kind of absorption boiler flue gas treatment systems of twin-stage, wherein described double
The absorption boiler flue gas treatment system of grade include condensing unit, the first absorber, the first regenerator, the second absorber and second again
Raw device, boiler sequentially concatenate by flue be connected to first regenerator, the condensing unit, first absorber,
Second absorber, first regenerator are connected to by the first inlet tube and the first drain pipe with first absorber,
First regenerator is connected to by jet chimney with the Second reactivator, the Second reactivator pass through the second inlet tube and
Second drain pipe is connected to second absorber, and the Second reactivator is connected to by combustion-aid air pipe with the boiler.
The absorption boiler flue gas treatment system of twin-stage as described above, wherein the condensing unit includes that condensing tower, water follow
Endless tube, First Heat Exchanger and lye tank, the both ends of the water-circulating pipe respectively with the top of the condensing tower, the condensing tower
Bottom connection, the First Heat Exchanger is set on the water-circulating pipe, and the First Heat Exchanger is changed with the first back-flowing and branched pipe
It is thermally connected, the first back-flowing and branched pipe is connected to the water return pipeline of the boiler, and the water-circulating pipe is equipped with energy will be described
Liquid in condensing tower is delivered to first pump housing at the top of the condensing tower by the bottom of the condensing tower, and the lye tank is logical
It crosses lye supply pipe to be connected to the bottom of the condensing tower, the lye supply pipe is equipped with can be by the lye in the lye tank
It is delivered to second pump housing of the condensing tower, and the lye supply pipe is equipped with the liquid in the condensing tower can be prevented along institute
The check-valves that lye supply pipe flow to the lye tank is stated, the check-valves is located at the lye supply pipe and the condensing tower
Between connectivity part and second pump housing；Liquid discharging tube, the liquid discharging tube and the water-circulating pipe are communicated on the water-circulating pipe
Between connectivity part be located between the water-circulating pipe and the connectivity part and the First Heat Exchanger of the condensing tower, the tapping
Pipe is equipped with bleeder valve.
The absorption boiler flue gas treatment system of twin-stage as described above, wherein the first end of first drain pipe and institute
The bottom connection of the first absorber is stated, the second end of first drain pipe is connected to the top of first regenerator, described
The first end of first inlet tube is connected to the bottom of first regenerator, the second end of first inlet tube and described first
The top of absorber is connected to, and first drain pipe, which is equipped with, to be delivered to described first for the liquid in first absorber
The third pump housing of regenerator, first inlet tube, which is equipped with, to be delivered to described first for the liquid in first regenerator
4th pump housing of absorber, first inlet tube are equipped with the second heat exchanger, second heat exchanger and second back-flowing and branched
Pipe heat exchange connection, the second back-flowing and branched pipe are connected to the water return pipeline of the boiler.
The absorption boiler flue gas treatment system of twin-stage as described above, wherein first regenerator and described first is inhaled
It receives and is equipped with regenerator between device, the second end of first drain pipe runs through the top of the regenerator and first regenerator
The first end of connection, first inlet tube is connected to through the regenerator with the bottom of first regenerator, and described first
Drain pipe and first inlet tube are in the internal heat of the regenerator.
The absorption boiler flue gas treatment system of twin-stage as described above, wherein first drain pipe with described first into
Between liquid pipe by liquid back pipe be connected to, between the liquid back pipe and first drain pipe or the liquid back pipe with described first into
It is connected between liquid pipe by triple valve.
The absorption boiler flue gas treatment system of twin-stage as described above, wherein the first end of second drain pipe and institute
The bottom connection of the second absorber is stated, the second end of second drain pipe is connected to the top of the Second reactivator, described
The first end of second inlet tube is connected to the bottom of the Second reactivator, the second end of second inlet tube and described second
The top of absorber is connected to, and second drain pipe, which is equipped with, to be delivered to described second for the liquid in second absorber
5th pump housing of regenerator, second inlet tube, which is equipped with, to be delivered to described second for the liquid in the Second reactivator
6th pump housing of absorber, second inlet tube are equipped with third heat exchanger, the third heat exchanger and the combustion air
Pipe heat exchange connection, the combustion-aid air pipe concatenation are connected to the Second reactivator and are connected to the boiler.
The absorption boiler flue gas treatment system of twin-stage as described above, wherein the Second reactivator connection, which is equipped with, takes out very
Blank pipe, the vacuum-pumping tube are equipped with vacuum pump.
The absorption boiler flue gas treatment system of twin-stage as described above, wherein the Second reactivator connection is equipped with condensate
Delivery pipe, the condensate delivery pipe are equipped with the 7th pump housing.
The absorption boiler flue gas treatment system of twin-stage as described above, wherein the bottom connection of first absorber is set
There is the first sewage pipe, first sewage pipe is equipped with the first blowdown valve, and the bottom connection of second absorber is equipped with second
Sewage pipe, second sewage pipe are equipped with the second blowdown valve.
The absorption boiler flue gas treatment system of twin-stage as described above, wherein first regenerator is shell-and-tube regeneration
Device, the Second reactivator are the board-like regenerator of interior heat type.
Compared with prior art, advantages of the present invention is as follows:
1, the absorption boiler flue gas treatment system of twin-stage provided by the invention is not needed using electric compression heat pump or natural gas
Heat pump of the direct combustion as heat source does not need additionally to be laid with natural gas line, and can effectively reach reduces fume afterheat and moisture recycling
The effect of cost, while by setting condensing unit, it can be before flue gas enters the first absorber to the soluble nitrogen in flue gas
Oxide is absorbed, and effectively prevents pollution of the soluble nitrogen oxide to hygroscopic solution in flue gas, while improving nitrogen oxidation
Object emission reduction effect, therefore, in the flue gas of the absorption boiler flue gas treatment system discharge of twin-stage provided by the invention, nitrogen oxides contains
Amount and smoke evacuation humidity are reduced, and facilitate Tuo Bai and alleviation haze is formed, bring ecological benefits.
2, the absorption boiler flue gas treatment system of twin-stage provided by the invention is absorbed by the first absorber of setting and second
Device two-stage absorber can carry out step recycling to moisture in flue gas and waste heat, and use the first absorber and the second absorber
Different solution are possibly realized, and the solution that wettability power is weaker but cheap, corrosivity is weak can be used in the solution of the first absorber；The
The solution of two absorbers can be regenerated using the strong solution of wettability power and using non-boiling formula again.
3, the absorption boiler flue gas treatment system of twin-stage provided by the invention passes through the first regenerator of setting and the second regeneration
Device two-stage regenerator can utilize twice fume afterheat, under the premise of the power of regeneration for guaranteeing two-stage regenerator, improve cigarette
Gas waste heat recovering effect.
4, the absorption boiler flue gas treatment system of twin-stage provided by the invention, by the way that combustion-aid air pipe is arranged, and to combustion-supporting
Combustion air warming and humidifying in air hose, advantageously reduces the production quantity of nitrogen oxides during fuel gas buring, from the root
Achieve the effect that nitrogen oxides emission reduction.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
Fig. 1 is the structural schematic diagram of the absorption boiler flue gas treatment system of twin-stage provided by the invention；
Fig. 2 is another structural schematic diagram of the absorption boiler flue gas treatment system of twin-stage provided by the invention.
Drawing reference numeral explanation:
1, condensing unit；
11, condensing tower；
12, water-circulating pipe；
121, first pump housing；
13, First Heat Exchanger；
131, the first back-flowing and branched pipe；
14, lye tank；
15, lye supply pipe；
151, second pump housing；
152, check-valves；
16, liquid discharging tube；
161, bleeder valve；
2, the first absorber；
21, the first inlet tube；
211, the 4th pump housing；
212, the second heat exchanger；
2121, the second back-flowing and branched pipe；
22, the first drain pipe；
221, the third pump housing；
23, liquid back pipe；
231, triple valve；
24, the first sewage pipe；
241, the first blowdown valve；
3, the first regenerator；
31, jet chimney；
4, the second absorber；
41, the second inlet tube；
411, the 6th pump housing；
412, third heat exchanger；
42, the second drain pipe；
421, the 5th pump housing；
43, the second sewage pipe；
431, the second blowdown valve；
5, Second reactivator；
51, vacuum-pumping tube；
511, vacuum pump；
52, condensate delivery pipe；
521, the 7th pump housing；
6, regenerator；
7, boiler；
71, flue；
72, combustion-aid air pipe；
8, chimney；
9, air-introduced machine
Specific embodiment
In order to have clearer understanding to technical solution of the present invention, purpose and effect, now in conjunction with the Detailed description of the invention present invention
Specific embodiment.
As shown in Figures 1 and 2, the present invention provides a kind of absorption boiler flue gas treatment systems of twin-stage, wherein twin-stage is inhaled
Receipts formula boiler flue gas treatment system include condensing unit 1, the first absorber 2, the first regenerator 3, the second absorber 4 and second again
Raw device 5, boiler 7 sequentially concatenate the first regenerator 3 of connection, condensing unit 1, the first absorber 2, second by flue 71 and inhale
Device 4 is received, the first regenerator 3 is connected to by the first inlet tube 21 and the first drain pipe 22 with the first absorber 2, the first regenerator 3
It is connected to by jet chimney 31 with Second reactivator 5, Second reactivator 5 passes through the second inlet tube 41 and the second drain pipe 42 and the
The connection of two absorbers 4, Second reactivator 5 are connected to by combustion-aid air pipe 72 with boiler 7.
To flue gas, in the process of processing, flue gas initially enters the first regenerator 3, the heat as the first regenerator 3
Part of waste heat in flue gas is supplied to the hygroscopic solution that the first regenerator 3 is used to heat the first regenerator 3, again by first by source
Hygroscopic solution in raw device 3, which is heated to boiling, is concentrated by evaporation hygroscopic solution, and hygroscopic solution heats steaming in the first regenerator 3
The vapor that hair generates enters the concentrating regenerative that Second reactivator 5 is hygroscopic solution in Second reactivator 5 by jet chimney 31
Heat is provided, so can effectively realize the recycling of fume afterheat, while not needing setting electric compression heat pump or natural gas straight
The heat pump as heat source is fired, does not need additionally to be laid with natural gas line, reduces cigarette while effective Mist heat recovering can be reached
The purpose of gas waste heat cost recovery；
Then flue gas is entered in condensing unit 1 by flue 71, is contacted simultaneously in condensing unit 1 with recirculated cooling water
Condensation realizes the preliminary water removal of flue gas and further cools down, while passing through recirculated cooling water for the soluble nitrogen oxygen in flue gas
Compound absorbs, and prevents flue gas from polluting to the hygroscopic solution in the first absorber 2 and the second absorber 4, while reaching nitrogen oxygen
The effect of compound emission reduction；
Then, flue gas is entered in the first absorber 2 by flue 71, and the hygroscopic solution in the first absorber 2 is to cigarette
Moisture in gas is absorbed, and the hygroscopic solution in the first absorber 2 is diluted after absorbing the moisture in flue gas, diluted suction
Wet solution by the first drain pipe 22 enter the first regenerator 3 in, by flue gas as regenerator heat source to diluted moisture absorption
Solution carries out ebuillition of heated concentration, and the hygroscopic solution after concentration is returned in the first absorber 2 by the first inlet tube 21；And pass through
The flue gas of first absorber 2 recycling moisture then passes through flue 71 and enters in the second absorber 4, then by the second absorber 4
Interior hygroscopic solution further absorbs the moisture in flue gas, and the hygroscopic solution in the second absorber 4 is in flue gas
Moisture absorbed after be diluted, the hygroscopic solution being diluted by the second drain pipe 42 enter Second reactivator 5 in, with
The vapor that first regenerator 3 generates interior heat diluted hygroscopic solution and makes to inhale as the Second reactivator 5 of heat source
The direct counter current contacting in Second reactivator 5 is dense by hygroscopic solution with combustion air dry in combustion-aid air pipe 72 for wet solution
Contracting, the combustion air in combustion-aid air pipe 72 is heated humidification at the same time, and the hygroscopic solution after concentration passes through the second inlet tube
41 return in the second absorber 4, and the hygroscopic solution in such first absorber 2 and the second absorber 4 is recycled successively to cigarette
Moisture in gas is absorbed, and effectively reduces smoke evacuation humidity, the white effect that disappears is obvious；Finally by the second absorber 4
The flue gas of recycling moisture enters chimney 8 by air-introduced machine 9 and is emitted into atmosphere.
Further, as shown in Figures 1 and 2, the absorption boiler flue gas treatment system of twin-stage provided by the invention, wherein
Condensing unit 1 includes condensing tower 11, water-circulating pipe 12, First Heat Exchanger 13 and lye tank 14, and condensing tower 11 is direct contact type
Condenser, specially spray (filler) tower, the both ends of water-circulating pipe 12 bottom with the top of condensing tower 11, condensing tower 11 respectively
Connection, sprays the recirculated cooling water in condensing tower 11 downwards by the top of condensing tower 11, and pass through in the bottom of condensing tower 11
Water-circulating pipe 12 flows back into the top of condensing tower 11 again, realizes the circulation of recirculated cooling water, in the mistake of recirculated cooling water circulation
Cheng Zhong will enter solubility nox adsorption contained in the flue gas of condensing tower 11, simultaneously because the cooling of recirculated cooling water
Effect makes flue gas cool-down, while the part vapor condensation in flue gas and flowing away circulation with recirculated cooling water, so reaches
Part polluted gas, the purpose that cooling is carried out to flue gas and is tentatively removed water in removal flue gas；First Heat Exchanger 13 is recycled set on water
On pipe 12, and First Heat Exchanger 13 and the first back-flowing and branched heat exchange of pipe 131 connect, and the first back-flowing and branched pipe 131 is returned with boiler 7
Waterpipe connection, recirculated cooling water can absorb the heat of flue gas and heat up during from top to bottom spray in condensing tower 11,
By the way that First Heat Exchanger 13 is arranged on water-circulating pipe 12, the heat that recirculated cooling water absorbs can be transmitted in a manner of heat exchange
To the boiler blow-down water in the first back-flowing and branched pipe 131, the recycling of fume afterheat is realized；Water-circulating pipe 12 is equipped with energy will be cold
Liquid in solidifying tower 11 is delivered to first pump housing 121 at the top of condensing tower 11 by the bottom of condensing tower 11, to guarantee that circulation is cold
But water smooth circulation；Lye tank 14 is connected to by lye supply pipe 15 with the bottom of condensing tower 11, and lye supply pipe 15 is equipped with
Second pump housing 151 that lye in lye tank 14 can be delivered to condensing tower 11 can be made by conveying lye into condensing tower 11
Recirculated cooling water is in alkalinity, so as to further improve recirculated cooling water to the assimilation effect of nitrogen oxides, preferably,
Lye is wet chemical, and potassium carbonate, which absorbs the potassium nitrate generated after soluble nitrogen oxide, can be used for the production of chemical fertilizer；And
Lye supply pipe 15 is equipped with the check-valves that the liquid in condensing tower 11 can be prevented to flow to lye tank 14 along lye supply pipe 15
152, check-valves 152 is located between the connectivity part of lye supply pipe 15 and condensing tower 11 and second pump housing 151, by the way that non-return is arranged
Valve 152 can prevent the liquid reflux in condensing tower 11 from polluting into lye tank 14 to the lye in lye tank 14；Water circulation
Liquid discharging tube 16 is communicated on pipe 12, the connectivity part between liquid discharging tube 16 and water-circulating pipe 12 is located at water-circulating pipe 12 and condensing tower 11
Connectivity part and First Heat Exchanger 13 between, liquid discharging tube 16 is equipped with bleeder valve 161, passes through setting liquid discharging tube 16 and in liquid discharging tube
Bleeder valve 161 is set on 16, periodically the recirculated cooling water in condensing tower 11 can be discharged for staff, to guarantee liquid
The alkalinity for guaranteeing recirculated cooling water under the premise of amount is avoided because part condensate moisture makes circulating cooling in condensing tower 11 in flue gas
Water increases accumulation；In addition, the connectivity part between liquid discharging tube 16 and water-circulating pipe 12 can also be located at water-circulating pipe 12 and condensing tower
Between the connectivity part and First Heat Exchanger 13 at 11 top, change recirculated cooling water after the outflow of the bottom of condensing tower 11 with first
Hot device 13 is discharged again after exchanging heat, further raising fume afterheat utilization efficiency.
Further, as shown in Figures 1 and 2, the absorption boiler flue gas treatment system of twin-stage provided by the invention, wherein
The first end of first drain pipe 22 is connected to the bottom of the first absorber 2, the second end of the first drain pipe 22 and the first regenerator 3
Top connection, the first end of the first inlet tube 21 is connected to the bottom of the first regenerator 3, the second end of the first inlet tube 21 and
The top of first absorber 2 is connected to, by the first absorber 2 after the moisture in hygroscopic solution absorption flue gas in the first absorber 2
Bottom flowed into the first regenerator 3 by the first drain pipe 22 and be heated to boiling and be concentrated, the moisture absorption of obtained concentration is molten
Liquid is entered in the first absorber 2 by the first inlet tube 21 from the top of the first absorber 2 by the bottom of the first regenerator 3
Portion, and spray from top to bottom, the hygroscopic solution and smoke contacts after being concentrated during spray simultaneously absorb the water in flue gas again
Point, it so recycles, the moisture in flue gas is recycled；First drain pipe 22 is equipped with can be by the liquid in the first absorber 2
It is delivered to the third pump housing 221 of the first regenerator 3, the first inlet tube 21 is equipped with and can convey the liquid in the first regenerator 3
To the 4th pump housing 211 of the first absorber 2, the first absorber 2 can guarantee by the setting third pump housing 221 and the 4th pump housing 211
The smooth circulation of interior hygroscopic solution；First inlet tube 21 is equipped with the second heat exchanger 212, the second heat exchanger 212 and second time
The heat exchange connection of moisture branch pipe 2121, the second back-flowing and branched pipe 2121 is connected to the water return pipeline of boiler 7, hygroscopic solution first again
There is very high temperature after heating in raw device 3, will can effectively be inhaled after flowing into the first inlet tube 21 by the second heat exchanger 212
The heat of wet solution exchanges the recycling benefit that the heat of hygroscopic solution is realized to the boiler blow-down water in the second back-flowing and branched pipe 2121
With.
Further, as shown in Figures 1 and 2, the absorption boiler flue gas treatment system of twin-stage provided by the invention,
In, be equipped with regenerator 6 between the first regenerator 3 and the first absorber 2, the second end of the first drain pipe 22 through regenerator 6 with
The top of first regenerator 3 is connected to, and the first end of the first inlet tube 21 is connected to through regenerator 6 with the bottom of the first regenerator 3,
First drain pipe 22 and the first inlet tube 21 are in the internal heat of regenerator 6.It can be to the first drain pipe 22 by setting regenerator 6
Interior diluted hygroscopic solution is preheated, and makes diluted hygroscopic solution before entering the first regenerator 3 and carrying out heating evaporation
Temperature i.e. with higher carries out the burden of heating evaporation to reduce the first regenerator 3 to diluted hygroscopic solution, while can also
The preliminary temperature for reducing the hygroscopic solution after being concentrated in the first regenerator 3.
Further, as shown in Fig. 2, the absorption boiler flue gas treatment system of twin-stage provided by the invention, wherein first
It is connected between drain pipe 22 and the first inlet tube 21 by liquid back pipe 23, between liquid back pipe 23 and the first drain pipe 22 or liquid back pipe
It is connected between 23 and the first inlet tube 21 by triple valve 231.It can be made by setting liquid back pipe 23 and triple valve 231 by the
One drain pipe 22 enters in the first regenerator 3 from the diluted hygroscopic solution only a fraction being discharged in the first absorber 2 and is added
Heat can so reduce the first regenerator 3 for solution and be heated to boiling institute's calorific requirement, effectively improve twin-stage absorption to boiling and being concentrated
The power of regeneration of formula boiler flue gas treatment system, burden is concentrated in the heating for reducing the first regenerator 3, to reduce the first regenerator
3 size, while the heat exchange burden of the second heat exchanger 212 is reduced, reduce the size of the second heat exchanger 212.
Further, as shown in Figures 1 and 2, the absorption boiler flue gas treatment system of twin-stage provided by the invention, wherein
The first end of second drain pipe 42 is connected to the bottom of the second absorber 4, the second end and Second reactivator 5 of the second drain pipe 42
Top connection, the first end of the second inlet tube 41 is connected to the bottom of Second reactivator 5, the second end of the second inlet tube 41 and
The top of second absorber 4 is connected to, by the second absorber 4 after the moisture in hygroscopic solution absorption flue gas in the second absorber 4
Bottom flowed into Second reactivator 5 by the second drain pipe 42 and carry out concentrating regenerative, the hygroscopic solution of obtained concentration is by the
Inside of the bottom of two regenerators 5 by the second inlet tube 41 from the top of the second absorber 4 into the second absorber 4, and by
Upper spray downwards, hygroscopic solution and smoke contacts after being concentrated during spray and the again moisture in absorption flue gas, so
Circulation recycles the moisture in flue gas；Second drain pipe 42, which is equipped with, to be delivered to second again for the liquid in the second absorber 4
5th pump housing 421 of raw device 5, the second inlet tube 41, which is equipped with, can be delivered to the liquid in Second reactivator 5 second absorber 4
The 6th pump housing 411, the smooth circulation of hygroscopic solution can guarantee by the 5th pump housing 421 of setting and the 6th pump housing 411；Second into
Liquid pipe 41 is equipped with third heat exchanger 412, and third heat exchanger 412 and the heat exchange of combustion-aid air pipe 72 connect, and combustion-aid air pipe 72 is gone here and there
Lead to Second reactivator 5 in succession and be connected to boiler 7, hygroscopic solution temperature with higher after Second reactivator 5 is flowing into
The heat of hygroscopic solution can be exchanged to the combustion-supporting sky in combustion-aid air pipe 72 after second inlet tube 41 by third heat exchanger 412
Gas is lowered into the temperature of the hygroscopic solution in the second absorber 4, promotes the wettability power of hygroscopic solution.
Further, as shown in Figures 1 and 2, the absorption boiler flue gas treatment system of twin-stage provided by the invention,
In, the connection of Second reactivator 5 is equipped with vacuum-pumping tube 51, and vacuum-pumping tube 51 is connected to the heating plate inner cavity of Second reactivator 5, takes out true
Blank pipe 51 is equipped with vacuum pump 511, since the heating plate inner cavity of the first regenerator 3 and Second reactivator 5 passes through jet chimney 31
Connection can make the hygroscopic solution in the first regenerator 3 low oxygen-containing in low-pressure low-temperature by setting vacuum-pumping tube 51 with vacuum pump 511
In the state of regenerate, reduce corrosion of the hygroscopic solution to the first regenerator 3, at the same by vacuum-pumping tube 51 and vacuum pump 511 and
When take fixed gas in the heating plate inner cavity of Second reactivator 5 in heat source vapor away, to promote vapor in Second reactivator 5
In condensation effect, improve Second reactivator 5 heat exchange efficiency and maintain the first regenerator 3 in vacuum degree；The return water of boiler 7
It is latter with boiler 7 is entered by the preheating of First Heat Exchanger 13 and the second heat exchanger 212, reduce the consumption of combustion gas in boiler 7
Amount, the connection of Second reactivator 5 are equipped with condensate delivery pipe 52, and condensate delivery pipe 52 is equipped with the 7th pump housing 521, in addition to this may be used also
It is connected to so that condensation tank is arranged with condensate delivery pipe 52, the condensed water obtained after condensation is high-quality condensate, can be arranged by condensate
Pipe 52 is put to be discharged into condensation tank directly as the moisturizing of boiler 7.
Further, as shown in Figures 1 and 2, the absorption boiler flue gas treatment system of twin-stage provided by the invention, wherein
The bottom connection of first absorber 2 is equipped with the first sewage pipe 24, and the first sewage pipe 24 is equipped with the first blowdown valve 241, and second inhales
The bottom connection for receiving device 4 is equipped with the second sewage pipe 43, and the second sewage pipe 43 is equipped with the second blowdown valve 431.Pass through setting first
Sewage pipe 24, the first blowdown valve 241, the second sewage pipe 43 and the second blowdown valve 431 can absorb the first absorber 2 and second
Hygroscopic solution in device 4 carries out discharge replacement, to guarantee the cleaning of hygroscopic solution.
Preferably, the absorption boiler flue gas treatment system of twin-stage provided by the invention, wherein the first regenerator 3 is pipe
Shell-type regenerator, the hygroscopic solution of the first absorber 2 absorbs in flue gas itself to be diluted after moisture, the hygroscopic solution warp being diluted
Regenerator 6 enters the first regenerator of shell-and-tube 3 shell-side after preheating is concentrated after being boiled by the high-temperature flue gas of pipe side, molten after concentration
Liquid is further cooled down in the second heat exchanger 212 by boiler blow-down water after regenerator 6 is tentatively cooling, subsequently into the first absorber 2
The moisture in flue gas is absorbed, a circulation is completed；Second reactivator 5 is the board-like regenerator of interior heat type, from the board-like regeneration of interior heat type
The hygroscopic solution being concentrated that device comes out enters the second absorber 4 by spray after cold air cooling in third heat exchanger 412
It is directly contacted with flue gas, the hygroscopic solution being diluted after moisture in absorption flue gas is again introduced into the board-like regenerator of interior heat type and is concentrated
A circulation is completed in regeneration.In the interior board-like Second reactivator 5 of heat type, hygroscopic solution is in the form of falling liquid film on heating plate plate
It flows from above to below, hygroscopic solution of the heat source vapor in the inner cavity of heating plate to flow on heating plates, in third heat exchanger
Flowing directly connects combustion air after being preheated in 412 by hygroscopic solution with the hygroscopic solution flowed on plate from bottom to top between plate
It touches and concentrating regenerative is carried out to hygroscopic solution and itself be heated humidification simultaneously, the combustion air after warming and humidifying enters in boiler 7
It is combustion-supporting.
Preferably, the absorption boiler flue gas treatment system of twin-stage provided by the invention, wherein since flue gas enters first
Water capacity is also higher when absorber 2 and the first regenerator 3 is boiling type regeneration (etching problem is more prominent), and first absorbs
It is molten that the hygroscopic solution recycled between device 2 and the first regenerator 3 can choose slightly weak but cheap, corrosivity the is weak moisture absorption of wettability power
Liquid, to mitigate corrosion of the hygroscopic solution to the first regenerator 3, since water capacity is lower and the when flue gas enters the second absorber 4
Two regenerators 5 select the board-like countercurrent falling-film regeneration of interior heat type, the moisture absorption recycled between the second absorber 4 and Second reactivator 5
Solution excessively can not scruple solution corrosion and the solution of selecting wettability power strong, to improve flue gas moisture and waste heat recycling effect
Fruit reduces final smoke evacuation water capacity.
Preferably, the absorption boiler flue gas treatment system of twin-stage provided by the invention, wherein the first back-flowing and branched pipe
131 and second back-flowing and branched pipe 2121 be connected to respectively with water return pipeline in parallel or the first back-flowing and branched pipe 131 and
Two back-flowing and branched pipes 2121 sequentially connect in series and are connected to water return pipeline, and the present invention is not limited thereto.
It should be noted that in the present invention, flue gas in the first absorber 2 with the flow direction in the second absorber 4
It can be and pass through the first absorber 2 and the second absorber 4 (adverse current) from bottom to top, or the first absorber can also be horizontally through
2 and second absorber 4 (distributary), the present invention is not limited thereto.
Compared with prior art, advantages of the present invention is as follows:
1, the absorption boiler flue gas treatment system of twin-stage provided by the invention is not needed using electric compression heat pump or natural gas
Heat pump of the direct combustion as heat source does not need additionally to be laid with natural gas line, and can effectively reach reduces fume afterheat and moisture recycling
The effect of cost, while by setting condensing unit, it can be before flue gas enters the first absorber to the soluble nitrogen in flue gas
Oxide is absorbed, and effectively prevents pollution of the soluble nitrogen oxide to hygroscopic solution in flue gas, while improving nitrogen oxidation
Object emission reduction effect, therefore, in the flue gas of the absorption boiler flue gas treatment system discharge of twin-stage provided by the invention, nitrogen oxides contains
Amount and smoke evacuation humidity are reduced, and facilitate Tuo Bai and alleviation haze is formed, bring ecological benefits.
2, the absorption boiler flue gas treatment system of twin-stage provided by the invention is absorbed by the first absorber of setting and second
Device two-stage absorber can carry out step recycling to moisture in flue gas and waste heat, and use the first absorber and the second absorber
Different solution are possibly realized, and the solution that wettability power is weaker but cheap, corrosivity is weak can be used in the solution of the first absorber；The
The solution of two absorbers can be regenerated using the strong solution of wettability power and using non-boiling formula again.
3, the absorption boiler flue gas treatment system of twin-stage provided by the invention passes through the first regenerator of setting and the second regeneration
Device two-stage regenerator can utilize twice fume afterheat, under the premise of the power of regeneration for guaranteeing two-stage regenerator, improve cigarette
Gas waste heat recovering effect.
4, the absorption boiler flue gas treatment system of twin-stage provided by the invention, by the way that combustion-aid air pipe is arranged, and to combustion-supporting
Combustion air warming and humidifying in air hose, advantageously reduces the production quantity of nitrogen oxides during fuel gas buring, from the root
Achieve the effect that nitrogen oxides emission reduction.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any
Those skilled in the art, under the premise of not departing from design and the principle of the present invention made equivalent variations with repair
Change, should belong to the scope of protection of the invention.
Claims (10)
1. a kind of absorption boiler flue gas treatment system of twin-stage, which is characterized in that the absorption boiler smoke processing system of twin-stage
System includes that condensing unit, the first absorber, the first regenerator, the second absorber and Second reactivator, boiler pass through flue
Sequentially concatenation is connected to first regenerator, the condensing unit, first absorber, second absorber, and described the
One regenerator is connected to by the first inlet tube and the first drain pipe with first absorber, and first regenerator passes through steam
Pipeline is connected to the Second reactivator, and the Second reactivator is inhaled by the second inlet tube and the second drain pipe and described second
Device connection is received, the Second reactivator is connected to by combustion-aid air pipe with the boiler.
2. the absorption boiler flue gas treatment system of twin-stage according to claim 1, which is characterized in that the condensing unit packet
Include condensing tower, water-circulating pipe, First Heat Exchanger and lye tank, the both ends of the water-circulating pipe top with the condensing tower respectively
The bottom connection in portion, the condensing tower, the First Heat Exchanger is set on the water-circulating pipe, and the First Heat Exchanger and the
One back-flowing and branched pipe heat exchange connection, the first back-flowing and branched pipe are connected to the water return pipeline of the boiler, the water-circulating pipe
It is equipped with the first pump that the liquid in the condensing tower can be delivered to the top of the condensing tower by the bottom of the condensing tower
Body, the lye tank are connected to by lye supply pipe with the bottom of the condensing tower, and the lye supply pipe is equipped with can be by institute
Second pump housing that the lye in lye tank is delivered to the condensing tower is stated, and the lye supply pipe is described cold equipped with that can prevent
Liquid in solidifying tower flow to the check-valves of the lye tank along the lye supply pipe, and the check-valves is located at lye supply
Between pipe and the connectivity part and second pump housing of the condensing tower；Liquid discharging tube, the tapping are communicated on the water-circulating pipe
The connectivity part that connectivity part between pipe and the water-circulating pipe is located at the water-circulating pipe and the condensing tower is changed with described first
Between hot device, the liquid discharging tube is equipped with bleeder valve.
3. the absorption boiler flue gas treatment system of twin-stage according to claim 1, which is characterized in that first drain pipe
First end be connected to the bottom of first absorber, the second end of first drain pipe is upper with first regenerator
Portion's connection, the first end of first inlet tube are connected to the bottom of first regenerator, and the second of first inlet tube
End is connected to the top of first absorber, and first drain pipe is equipped with can be defeated by the liquid in first absorber
It send to the third pump housing of first regenerator, first inlet tube is equipped with can be defeated by the liquid in first regenerator
Send to the 4th pump housing of first absorber, first inlet tube is equipped with the second heat exchanger, second heat exchanger with
Second back-flowing and branched pipe heat exchange connection, the second back-flowing and branched pipe are connected to the water return pipeline of the boiler.
4. the absorption boiler flue gas treatment system of twin-stage according to claim 1, which is characterized in that first regenerator
Regenerator is equipped between first absorber, the second end of first drain pipe runs through the regenerator and described first
The top of regenerator is connected to, and the first end of first inlet tube connects through the bottom of the regenerator and first regenerator
Logical, first drain pipe and first inlet tube are in the internal heat of the regenerator.
5. the absorption boiler flue gas treatment system of twin-stage according to claim 1, which is characterized in that first drain pipe
It is connected between first inlet tube by liquid back pipe, between the liquid back pipe and first drain pipe or the liquid back pipe
It is connected between first inlet tube by triple valve.
6. the absorption boiler flue gas treatment system of twin-stage according to claim 1, which is characterized in that second drain pipe
First end be connected to the bottom of second absorber, the second end of second drain pipe is upper with the Second reactivator
Portion's connection, the first end of second inlet tube are connected to the bottom of the Second reactivator, and the second of second inlet tube
End is connected to the top of second absorber, and second drain pipe is equipped with can be defeated by the liquid in second absorber
It send to the 5th pump housing of the Second reactivator, second inlet tube is equipped with can be defeated by the liquid in the Second reactivator
Send to the 6th pump housing of second absorber, second inlet tube is equipped with third heat exchanger, the third heat exchanger with
The combustion-aid air pipe heat exchange connection, the combustion-aid air pipe concatenation are connected to the Second reactivator and are connected to the boiler.
7. the absorption boiler flue gas treatment system of described in any item twin-stages according to claim 1~6, which is characterized in that described
Second reactivator connection is equipped with vacuum-pumping tube, and the vacuum-pumping tube is equipped with vacuum pump.
8. the absorption boiler flue gas treatment system of described in any item twin-stages according to claim 1~6, which is characterized in that described
Second reactivator connection is equipped with condensate delivery pipe, and the condensate delivery pipe is equipped with the 7th pump housing.
9. the absorption boiler flue gas treatment system of described in any item twin-stages according to claim 1~6, which is characterized in that described
The bottom connection of first absorber is equipped with the first sewage pipe, and first sewage pipe is equipped with the first blowdown valve, and described second inhales
The bottom connection for receiving device is equipped with the second sewage pipe, and second sewage pipe is equipped with the second blowdown valve.
10. the absorption boiler flue gas treatment system of described in any item twin-stages according to claim 1~6, which is characterized in that described
First regenerator is shell-and-tube regenerator, and the Second reactivator is the board-like regenerator of interior heat type.
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Cited By (1)
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| CN116658887A (en) * | 2023-05-18 | 2023-08-29 | 北京天地融创科技股份有限公司 | Energy-saving system of industrial hot water boiler |
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