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 PDF

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Publication number
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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heat exchanger
connect
outlet
water
cooling
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CN201910575132.XA
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杨江
顾亚萍
王桂锋
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United Engineers Ltd In China
China United Engineering Corp Ltd
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United Engineers Ltd In China
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Priority to CN201910575132.XA priority Critical patent/CN110307558A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/14Separation 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
    • B01D53/1456Removing acid components
    • B01D53/1481Removing sulfur dioxide or sulfur trioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/14Separation 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
    • B01D53/18Absorbing units; Liquid distributors therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/006Layout of treatment plant
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/06Arrangements of devices for treating smoke or fumes of coolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/08Arrangements of devices for treating smoke or fumes of heaters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/20Reductants
    • B01D2251/206Ammonium compounds
    • B01D2251/2062Ammonia
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00Preventing emissions
    • F23J2215/20Sulfur; Compounds thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/15081Reheating of flue gases
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage

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  • 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

A kind of ammonia process of desulfurization tower flue gas disappears white structure and its operation method
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)

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
CN201910575132.XA 2019-06-28 2019-06-28 A kind of ammonia process of desulfurization tower flue gas disappears white structure and its operation method Pending CN110307558A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111013361A (en) * 2019-12-27 2020-04-17 浙江德创环保科技股份有限公司 Wet flue gas desulfurization low-temperature waste heat utilization and white elimination system
CN111330401A (en) * 2020-04-02 2020-06-26 杭州鼎飞数控科技有限公司 Energy-saving, non-blocking and less-maintenance industrial oil fume purifier
CN111457408A (en) * 2020-03-06 2020-07-28 复旦大学 Flue gas rotational flow injection de-whitening coupling absorption type heat pump waste heat recovery device and method

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