CN110307558A - A kind of ammonia process of desulfurization tower flue gas disappears white structure and its operation method - Google Patents
A kind of ammonia process of desulfurization tower flue gas disappears white structure and its operation method Download PDFInfo
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- CN110307558A CN110307558A CN201910575132.XA CN201910575132A CN110307558A CN 110307558 A CN110307558 A CN 110307558A CN 201910575132 A CN201910575132 A CN 201910575132A CN 110307558 A CN110307558 A CN 110307558A
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000003546 flue gas Substances 0.000 title claims abstract description 41
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 230000008569 process Effects 0.000 title claims abstract description 35
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 27
- 230000023556 desulfurization Effects 0.000 title claims abstract description 26
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000005406 washing Methods 0.000 claims abstract description 48
- 239000000498 cooling water Substances 0.000 claims abstract description 44
- 238000011010 flushing procedure Methods 0.000 claims abstract description 21
- 239000003595 mist Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims description 31
- 230000008676 import Effects 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 15
- 230000003009 desulfurizing effect Effects 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 5
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 35
- 230000000694 effects Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000010795 Steam Flooding Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- 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
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
-
- 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
-
- 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
- F23J15/006—Layout of treatment plant
-
- 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
- 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
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- 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
- F23J2215/20—Sulfur; 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
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/15081—Reheating of flue gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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 Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention provides a kind of ammonia process of desulfurization tower flue gas and disappears white structure and its operation method, investment is lower, operation is more stable, method is simpler, it is white high-efficient to disappear, and can be used for existing ammonia process of desulfurization tower apparatus, the white transformation that disappears is carried out on the basis of not changing original ammonia process of desulfurization tower structure.It loop solution pipeline and water washing cycles slot and is connected to the filter, filter is connect with air heat exchanger, and air heat exchanger is connect with plate heat exchanger, and plate heat exchanger is connect with water washing cycles slot；Water washing cycles slot is pumped with water washing cycles and mist eliminator flushing water pump is connect；Cooling water pump is connect with self-sucking pot and cooling water pipeline, and cooling water pipeline is connect with plate heat exchanger；Centrifugal blower is connect with air heat exchanger, and air heat exchanger is connect with steam heater, and steam heater is connect with hot air duct.
Description
Technical field
Disappear white structure and its operation method the present invention relates to a kind of ammonia process of desulfurization tower flue gas, is used for flue gas desulfurization field.
Background technique
Since ammonia process of desulfurization reaction rate is fast, absorbent utilization rate is high, is able to maintain desulfuration efficiency 95-99%, and without secondary dirt
The advantages of contaminating, having both the feature of environmental protection and economic benefit, which gets more and more attention.It is inhaled in ammonia type flue gas desulfurizing system
Tower outlet is received, the neat stress of discharge is mixing diffusion with atmosphere by the flue gas that chimney is discharged into atmosphere due to being in wet saturation state
Temperature reduces in the process, and the elutriation in flue gas goes out, and forms white haze on chimney periphery, is commonly called as " plume ", promotes the formation of haze, right
Civil plantation and vision cause to perplex.With national environmental protection administer require be increasingly stringenter, mostly put into effect successively plume disappear it is white
Requirement.For current existing ammonia process of desulfurization tower apparatus, on the basis of not changing original ammonia process of desulfurization tower structure, exploitation one
Kind of ammonia process of desulfurization tower flue gas disappears white structure and method engineering practice value with higher.
Existing ammonia process of desulfurization flue gas disappears white technology, as shown in the Chinese patent application No. is 201810992331.6, this
Method is that heat exchanger and steam drive type absorption type heat pump assembly are arranged between the outlet and cyclic water tank of washing section liquid trap,
To realize that flue gas desulfurization disappears white purpose.There are larger drawbacks for this method, and wherein steam drive type absorption type heat pump assembly exists
When actual motion, boundary parameter, such as heat source import coolant-temperature gage and flow, driving steam pressure and the degree of superheat, due to by each
It is influenced in kind in, external factor and the operating condition of absorption type heat pump assembly is made much to deviate design conditions, be not achieved original
Cooling effect disappears white efficiency to influence flue gas；In addition it is such as precooled only by setting heat exchanger, follows bad aqueous solution
In impurity may block, corrode heat exchanger, influence the set steady of cooling efficiency and the white system that disappears.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide a kind of reasonable in design
Ammonia process of desulfurization tower flue gas disappears white structure and its operation method, invests that lower, operation is more stable, method is simpler, it is white high-efficient to disappear,
And using existing ammonia process of desulfurization tower apparatus, the white transformation that disappears is carried out on the basis of not changing original ammonia process of desulfurization tower structure.
Technical solution used by the present invention solves the above problems is: a kind of ammonia process of desulfurization tower flue gas disappears white structure, including
Desulfurizing tower, residual heat of electric power plant jet chimney, plant steam tube and power plant cooling water tower reservoir, desulfurizing tower are provided with washing section collection
Liquid device, circulating water flushing distributor, demister and tower exit stack；
It is characterized by also including filter, air heat exchanger, plate heat exchanger, loop solution bypass ducts, water washing cycles
Slot, mist eliminator flushing water pump, water washing cycles pump, steam heater, centrifugal blower, self-sucking pot, cooling water pump, cooling water pipeline,
Hot air duct and loop solution pipeline；The circulating water outlet of washing section liquid trap is connect with the import of loop solution pipeline；
The outlet of loop solution pipeline is divided into two-way, is connected all the way by the import of loop solution bypass duct and water washing cycles slot
It connects, the import connection of another way and filter, the outlet of filter and the loop solution import of air heat exchanger connect, air
The loop solution outlet of heat exchanger is connect with the loop solution import of plate heat exchanger, the loop solution of plate heat exchanger
Outlet is connect with the import of water washing cycles slot；The outlet of water washing cycles slot is divided into two-way, and the import with water washing cycles pump connects all the way
It connects, another way is connect with the import of mist eliminator flushing water pump, the outlet of water washing cycles pump and the charging of circulating water flushing distributor
Mouth connection, the outlet of mist eliminator flushing water pump and the rinse mouth of demister connect；Power plant cooling water tower reservoir and self-sucking pot connect
It connects；The import of cooling water pump is connect with self-sucking pot, and outlet is connect with the import of cooling water pipeline, the outlet of cooling water pipeline and plate
The cooling water inlet of formula heat exchanger connects, and the cooling water outlet of plate heat exchanger is connect with power plant cooling water tower reservoir；Centrifugation
The outlet of blower and the intake interface of air heat exchanger connect, the outlet interface of air heat exchanger and the air inlet connecting of steam heater
Mouth connection, the outlet interface of steam heater are connect with hot air duct, the tower exit stack connection of hot air duct and desulfurizing tower；Electricity
The connection of the steam inlet of factory's afterheat steam pipeline and steam heater, the steam (vapor) outlet and plant steam tube of steam heater connect
It connects.
The invention also includes draining melt pit, the outlet of cooling water pipeline is connect with draining melt pit.
The cooling water outlet of plate heat exchanger of the present invention is connect with draining melt pit.
Centrifugal blower of the present invention is two, the using and the reserved.
A kind of ammonia process of desulfurization tower flue gas disappears the operation method of white structure, it is characterised in that: process is as follows:
The loop solution that washing section liquid trap is collected successively passes through filter filtering, air heat exchanger cooling, plate heat exchanger
Enter water washing cycles slot after cooling；Centrifugal blower blasts air to air heat exchanger and carries out level-one cooling to loop solution；By
Process water is pumped into plate heat exchanger out of power plant cooling water tower reservoir by cooling water pump, to the loop solution after level-one cooling
Second level cooling is carried out, process water returns power plant cooling water tower reservoir repeated recycling utilize, and reduces the recirculated water after temperature
Solution enters back into water washing cycles slot, and the loop solution after cooling is sent into circulating water flushing distributor by water washing cycles pump
Spraying cooling again is carried out to flue gas；
The steam of residual heat of electric power plant jet chimney enters steam heater, to the air for having been subjected to air heat exchanger level-one and heating out
Second level heating is carried out, the air after heating enters tower exit stack by hot air duct, is sufficiently mixed with neat stress, so that finally
The neat stress temperature of discharge chimney is enhanced, and it is white to achieve the purpose that flue gas dehumidifying disappears.
Compared with prior art, the present invention having the following advantages that and effect:
1, the present invention cools down to the cooled recirculated water continuous several times spraying cooling of the flue gas purified in desulfurizing tower, low temperature
Recirculated water reduces the water capacity of exhaust gas temperature and smoke evacuation, so that the content of steam in the flue gas of chimney is lowered into, into cigarette
Flue gas after the dehumidifying of chimney discharges after passing through the hot wind mixing heating of steam heater through chimney breast, reaches flue gas and disappears white mesh
, and meet environmental protection, power conservation requirement, there are significant economical, societal benefits.
2, using existing ammonia process of desulfurization tower apparatus, disappear on the basis of not changing original ammonia process of desulfurization tower structure
White transformation, reforming technology route is simple, at low cost.
3, it is gone that filter is arranged before air heat exchanger on pipeline by recirculated water, filter, which can filter out, to be possible to block up
The impurity for filling in, corroding subsequent heat-exchanger rig has well solved the unavoidable blockage problem of heat exchanger, has kept loop solution cold
But system work is more stable.
4, while once cooling using air heat exchanger to loop solution, centrifugal blower outlet air is carried out
Level-one heating, that is, plant energy consumption can be reduced again by reaching good heat transfer effect；Plate heat exchanger is to utilize the existing cooling of power plant
Process water in tower reservoir, to carrying out second level cooling again from having been subjected to the recirculated water after air heat exchanger level-one cools,
The process water of circulation returns the recycling of cooling tower reservoir, meets environmental protection, power conservation requirement.
5, the recirculated water of low temperature rinses sparger system by water in tower and carries out spraying cooling again to flue gas, reduces net in tower
The temperature of flue gas, and then achieve the purpose that reduce humidity of flue gas in tower.
6, by reducing the temperature of recirculated water, so that the NH in washing section and demisting section flue gas3In spray, demisting technique mistake
More soluble into recirculated water in journey, ammonia escape amount is less, desulfurization neat stress cleanliness is higher.
7, flue gas has not been only reached to disappear white purpose, and it is compact-sized, method is simple, stable, investment is low, disappear white effect
Rate is high.
Detailed description of the invention
Fig. 1 is the partial structural diagram one of the embodiment of the present invention.
Fig. 2 is the partial structural diagram two of the embodiment of the present invention.
Fig. 3 is the partial structural diagram three of the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Referring to figures 1-3, the embodiment of the present invention includes desulfurizing tower 1, filter 12, air heat exchangers 13, plate heat exchanger
14, loop solution bypass duct 15, water washing cycles slot 16, mist eliminator flushing water pump 17, water washing cycles pump 18, steam heater
19, centrifugal blower 20, residual heat of electric power plant jet chimney 21, power plant cooling water tower reservoir 22, self-sucking pot 23, cooling water pump 24, cold
But waterpipe 25, draining melt pit 26, hot air duct 28, loop solution pipeline 29 and plant steam tube 30.
Desulfurizing tower 1 is disposed with oxidation panel 2 from lower to upper, prewashing section 3, absorber portion liquid trap 5, absorber portion 6, lower layer remove
Day with fog 7, washing section liquid trap 8, circulating water flushing distributor 9, upper layer demister 11, tower exit stack 4.The lower part of desulfurizing tower 1
It is provided with tower inlet flue duct 27, tower inlet flue duct 27 is located at the lower section of prewashing section 3.
The circulating water outlet of washing section liquid trap 8 is connect with the import of loop solution pipeline 29；Loop solution pipeline
29 outlet is divided into two-way, is connect, is disappeared with the import of water washing cycles slot 16 by loop solution bypass duct 15 all the way
Bai Shi, loop solution bypass duct 15 is closed, and when without disappearing white, loop solution bypass duct 15 is opened；It recycles water-soluble
The another way that liquid pipe road 29 exports is connect with the import of filter 12, the outlet of filter 12 and the recirculated water of air heat exchanger 13
The loop solution outlet of solution inlet port connection, air heat exchanger 13 is connect with the loop solution import of plate heat exchanger 14,
The loop solution outlet of plate heat exchanger 14 is connect with the import of water washing cycles slot 16, and the outlet of water washing cycles slot 16 is divided into two
Road is connect with the import of water washing cycles pump 18 all the way, and another way is connect with the import of mist eliminator flushing water pump 17, water washing cycles pump
18 outlet is connect with the feed inlet of circulating water flushing distributor 9, the outlet of mist eliminator flushing water pump 17 and lower layer's demister 7 and
The rinse mouth of upper layer demister 11 connects.
Power plant cooling water tower reservoir 22 is connect by self priming pump with self-sucking pot 23.The import of cooling water pump 24 and self-sucking pot
23 connection, outlet connect with the import of cooling water pipeline 25, the outlet of cooling water pipeline 25 is divided into two-way, all the way with plate-type heat-exchange
The cooling water inlet of device 14 connects, and another way is connect with draining melt pit 26.The cooling water outlet of plate heat exchanger 14 and power plant are cold
But water tower reservoir 22 and draining melt pit 26 connect.
The outlet of centrifugal blower 20 is connect with the intake interface of air heat exchanger 13, the outlet interface of air heat exchanger 13 with
The intake interface of steam heater 19 connects, and the outlet interface of steam heater 19 is connect with hot air duct 28, hot air duct 28
It is connect with the tower exit stack 4 of desulfurizing tower 1.Residual heat of electric power plant jet chimney 21 is connect with the steam inlet of steam heater 19, is steamed
The steam (vapor) outlet of vapour heater 19 is connect with plant steam tube 30.Centrifugal blower 20 is two, the using and the reserved.
Flue gas flow direction: the former flue gas outside system enters desulfurizing tower 1 by tower inlet flue duct 27, by the pre- of prewashing section 3
Circulation fluid cooling washing is washed, prewashing circulation fluid is concentrated by the preheating of former flue gas at the same time；Flue gas is absorbed section liquid trap 5
Absorber portion 6 is risen through after collecting recirculated water, is absorbed circulation fluid washing desulphurization, and by 7 demisting of lower layer's demister, washing section
Liquid trap 8 collects recirculated water, and then flue gas is using the circulating water flushing distributor 9 of two-stage, and be cooled loop solution removing
Fine particulates simultaneously reduce temperature, and by 11 demisting of upper layer demister；Last neat stress is discharged from tower exit stack 4.
Loop solution flow direction: it is water-soluble that washing section liquid trap 8 collects the circulation got off after circulating water flushing distributor 9 sprays
Liquid, then loop solution successively enters after the filtering of filter 12, the cooling of air heat exchanger 13, plate heat exchanger 14 cool down
Water washing cycles slot 16；Centrifugal blower 20 blasts air to air heat exchanger 13 and carries out level-one cooling to loop solution；By cooling down
Process water is pumped into plate heat exchanger 14 out of power plant cooling water tower reservoir 22 by water pump 24, water-soluble to the circulation after level-one cooling
Liquid carries out second level cooling, and the loop solution after reducing temperature enters back into water washing cycles slot 16, will by water washing cycles pump 18
Loop solution after cooling is sent into circulating water flushing distributor 9 and carries out spraying cooling again to flue gas, and reaching reduces net cigarette in tower
The temperature of gas, the purpose for reducing humidity of flue gas in tower.
Steam-stream of hot air to: the steam of residual heat of electric power plant jet chimney 21 enters steam heater 19, to having been subjected to air
The air that 13 level-one of heat exchanger heats out carries out second level heating, and the air after heating enters tower by hot air duct 28 and exports cigarette
Chimney 4, is sufficiently mixed with neat stress, so that finally the neat stress temperature of discharge chimney is raised to >=80 DEG C, reaches flue gas dehumidifying
Disappear white purpose.The outlet of steam heater 19 installation steam trap connection, the steam after heat exchange enter back into the steaming of the power plant on integrated pipe frame
Steam pipe road 30.
Cooling water flow direction: the process water cooling water pump 24 in power plant cooling water tower reservoir 22 is pumped into plate heat exchanger
14, to second level cooling is carried out again from having been subjected to the loop solution after 13 level-one of air heat exchanger cools, process water returns again
To 22 repeated recycling utilize of power plant cooling water tower reservoir.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to structure of the invention example explanation described in this specification.It is all according to
According to equivalence changes or simple change that the invention patent design structure, feature and principle is done, it is included in this hair
In the protection scope of bright patent.Those skilled in the art can do described specific embodiment various
The mode that the modify or supplement or adopt of various kinds is similar substitutes, and without departing from structure of the invention or surmounts present claims
Range defined in book, is within the scope of protection of the invention.
Claims (5)
- The white structure 1. a kind of ammonia process of desulfurization tower flue gas disappears, including desulfurizing tower, residual heat of electric power plant jet chimney, plant steam tube and electricity Factory's cooling tower reservoir, desulfurizing tower are provided with washing section liquid trap, circulating water flushing distributor, demister and tower outlet cigarette Chimney；It is characterized by also including filter, air heat exchanger, plate heat exchanger, loop solution bypass ducts, water washing cycles Slot, mist eliminator flushing water pump, water washing cycles pump, steam heater, centrifugal blower, self-sucking pot, cooling water pump, cooling water pipeline, Hot air duct and loop solution pipeline；The circulating water outlet of washing section liquid trap is connect with the import of loop solution pipeline； The outlet of loop solution pipeline is divided into two-way, is connected all the way by the import of loop solution bypass duct and water washing cycles slot It connects, the import connection of another way and filter, the outlet of filter and the loop solution import of air heat exchanger connect, air The loop solution outlet of heat exchanger is connect with the loop solution import of plate heat exchanger, the loop solution of plate heat exchanger Outlet is connect with the import of water washing cycles slot；The outlet of water washing cycles slot is divided into two-way, and the import with water washing cycles pump connects all the way It connects, another way is connect with the import of mist eliminator flushing water pump, the outlet of water washing cycles pump and the charging of circulating water flushing distributor Mouth connection, the outlet of mist eliminator flushing water pump and the rinse mouth of demister connect；Power plant cooling water tower reservoir and self-sucking pot connect It connects；The import of cooling water pump is connect with self-sucking pot, and outlet is connect with the import of cooling water pipeline, the outlet of cooling water pipeline and plate The cooling water inlet of formula heat exchanger connects, and the cooling water outlet of plate heat exchanger is connect with power plant cooling water tower reservoir；Centrifugation The outlet of blower and the intake interface of air heat exchanger connect, the outlet interface of air heat exchanger and the air inlet connecting of steam heater Mouth connection, the outlet interface of steam heater are connect with hot air duct, the tower exit stack connection of hot air duct and desulfurizing tower；Electricity The connection of the steam inlet of factory's afterheat steam pipeline and steam heater, the steam (vapor) outlet and plant steam tube of steam heater connect It connects.
- The white structure 2. ammonia process of desulfurization tower flue gas according to claim 1 disappears, it is characterised in that: it further include draining melt pit, it is cold But the outlet of waterpipe is connect with draining melt pit.
- The white structure 3. ammonia process of desulfurization tower flue gas according to claim 1 disappears, it is characterised in that: the plate heat exchanger Cooling water outlet is connect with draining melt pit.
- The white structure 4. ammonia process of desulfurization tower flue gas according to claim 1 disappears, it is characterised in that: the centrifugal blower is two Platform, the using and the reserved.
- The operation method of white structure 5. ammonia process of desulfurization tower flue gas described in a kind of claim 1-4 any claim disappears, it is special Sign is: process is as follows:The loop solution that washing section liquid trap is collected successively passes through filter filtering, air heat exchanger cooling, plate heat exchanger Enter water washing cycles slot after cooling；Centrifugal blower blasts air to air heat exchanger and carries out level-one cooling to loop solution；By Process water is pumped into plate heat exchanger out of power plant cooling water tower reservoir by cooling water pump, to the loop solution after level-one cooling Second level cooling is carried out, process water returns power plant cooling water tower reservoir repeated recycling utilize, and reduces the recirculated water after temperature Solution enters back into water washing cycles slot, and the loop solution after cooling is sent into circulating water flushing distributor by water washing cycles pump Spraying cooling again is carried out to flue gas；The steam of residual heat of electric power plant jet chimney enters steam heater, to the air for having been subjected to air heat exchanger level-one and heating out Second level heating is carried out, the air after heating enters tower exit stack by hot air duct, is sufficiently mixed with neat stress, so that finally The neat stress temperature of discharge chimney is enhanced, and it is white to achieve the purpose that flue gas dehumidifying disappears.
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