CN206285690U - A kind of device for eliminating white cigarette - Google Patents

A kind of device for eliminating white cigarette Download PDF

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Publication number
CN206285690U
CN206285690U CN201621326498.1U CN201621326498U CN206285690U CN 206285690 U CN206285690 U CN 206285690U CN 201621326498 U CN201621326498 U CN 201621326498U CN 206285690 U CN206285690 U CN 206285690U
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CN
China
Prior art keywords
water
flue gas
hot
air
heater
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CN201621326498.1U
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Chinese (zh)
Inventor
施明菊
章丽华
李开建
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四川省简阳空冷器制造有限公司
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Priority to CN201621326498.1U priority Critical patent/CN206285690U/en
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Publication of CN206285690U publication Critical patent/CN206285690U/en

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    • 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

Abstract

The utility model discloses a kind of device for eliminating white cigarette, including:Water heater, is arranged on heat smoke pipeline;Desulfurization, wet cottrell, are set by the heat smoke pipeline after water heater;Flue gas condenser, is arranged on by the heat smoke pipeline after desulfurization, wet cottrell;Air heater, is connected by circulating hot-water pump, circulating hot water pipeline with water heater;Cooling tower, is connected by circulating cooling water pump, recirculated cooling water pipeline with flue gas condenser;Hot-air duct, is arranged in chimney, and its entrance point is connected with the hot-blast outlet end of air heater.Steam in wet flue gas is reduced 70~80% by the utility model using recirculated cooling water spray condensation process, the hot-air being added into again in chimney mixes, heats, drying heel row to air, the thermal source of hot-air uses circulating hot water technique, compared with from cigarette heat exchange method, have the advantages that flue gas resistance is small, energy consumption is low, reliability is high.

Description

A kind of device for eliminating white cigarette
Technical field
The utility model is related to flue gases purification field, is used to eliminate coal-fired and fossil energy more particularly in the field A kind of purifier of produced flue gas afterwards.
Background technology
Due to the energy resources natural endowment of China's few gas rich in coal and poor in oil, units of heat coal price is well below oil price gas price in addition, Cause more than annual 40 hundred million tons of raw coal, it is most by high temperature heat source that burning conversion is the industries such as metallurgy, electric power, chemical industry, move Power steam, process steam, produce the flue gas of tcm about more than 30 every year.In the prior art, gas cleaning governance process In, major part uses wet desulphurization or wet static dedusting technology, the technology to be stripped of most SO2, flue dust, nitrogen in flue gas Oxide, heavy metal, there is certain good effect.The smoke gas treatment of Some Enterprises, moreover it is possible to reach and be far below《(GB13223- 2011) fossil-fuel power plant atmospheric pollutant emission standard》:Dust≤5mg/m3, sulfur dioxide≤35mg/m3, nitrogen oxides is (with NO2 Meter)≤50mg/m3, mercury≤0.03mg/m3, the gas turbine steam discharge standard of blackness≤1 degree index, is the Coal Energy Source of China Clean utilization provides important leverage.
But wet desulphurization or wet static dedusting in gas cleaning governance process, but roll up the water of flue gas Vapour, reaches 10~20% concentration, not only consumes water resource, and especially in the quiet wind weather that temperature is relatively low, humidity is larger, flue gas In substantial amounts of steam small water droplet is condensed into the presence of cold air, rapidly, the high concentration sour gas such as CO2 in flue gas, Then formed and grown up along with small water droplet, be constantly dissolved among water droplet, and reduce the steam partial pressure of water drops surface, make water Drop fast growth, as dense acid white cigarette, acid white cigarette by the PM hazes grain absorption in air, can further reduce its table again The steam partial pressure in face, reduces air humidity, and reaches its metastable state that balances each other, the haze as pollution environment, Here it is the reason for white cigarette that chimney is emerged is considered as haze accomplice by people.Therefore, quiet wind weather especially in the winter time, reduces cigarette The white cigarette that chimney is excluded, efficiently contributes to mitigate haze, and this knows together as industry.
The conventional method of existing elimination white cigarette is substantially exactly the flue gas for conceding chimney in the mixing with air, cooling, expansion Dissipate during, temperature is not dropped to also below the dew-point temperature of water vapour, just make flue gas and steam therein be diffused into air it In.Therefore, dehumidification, heating are carried out to flue gas, the physical basis of the white cigarette that exactly removes smoke, conventional method has:
1. condensing heat-exchange method, is shown in accompanying drawing 1, and wet flue gas temperature exactly is dropped into 25 or so DEG C from 50~60 DEG C, in making flue gas Moisture condensation separate out flue gas system for aqueous water, then will be arranged to air by chimney after flue gas with heat exchanger.But should Method has heat exchanger to invest the deficiency of big big, perishable flue gas resistance, reliability, stability difference.
2. from cigarette heat exchange method, see accompanying drawing 2, be exactly the temperature using dry flue gas before desulfurization, heating desulfurization or wet electrostatic are removed Wet flue gas after dirt device reach more than 80 DEG C, and the technology does not need outer supplying heat source, is widely used in power industry, and initial operation stage is changed The hot device coefficient of heat transfer is high, wet flue gas can be reached into more than 80 DEG C, and after about running 1~3 year, the colloid, solid in flue gas are micro- Grain is attached to heat exchanger surface, finally causes the coefficient of heat transfer to be greatly reduced, and flue-gas temperature does not increase, and chimney emits white cigarette in the same old way, together When also also have heat exchanger is easily blocked, fragile, flue gas resistance is big deficiency.
3. electric demisting method, because the moisture content at a temperature of flue gas after desulfurization is in full state, most steam are still Exist with gaseous state, have no a large amount of droplets, so demisting effect on driving birds is not good, also also equipment investment is big, power consumption is high, poor reliability etc. It is not enough;
4. combination drying method, is only to remix heat smoke after first spray water is separated, to be discharged again after reducing vapor content, The method needs clean heat smoke, because the heat smoke dust content in reality is all higher, though white cigarette can be reduced, increased Flue dust, the method only can be not tight in environmental requirement, and has the place use of the steel plant of heat smoke.
Utility model content
In view of heat exchanger coefficient of heat transfer decay that the existing apparatus and method for eliminating white cigarette are present is fast, easily block, perishable, Flue gas resistance is big, it is impossible to be completely eliminated white cigarette, or eliminates white cigarette performance and can not for a long time keep etc. deficiency, and the utility model is carried Go out a kind of condensation dehydration+hot-air combination drying device to solve.
The utility model is achieved through the following technical solutions:
A kind of device for eliminating white cigarette, including:
Water heater, is arranged on heat smoke pipeline;
Desulfurization, wet cottrell, are set by the heat smoke pipeline after water heater;
Flue gas condenser, is arranged on by the heat smoke pipeline after desulfurization, wet cottrell;
Air heater, is connected by circulating hot-water pump, circulating hot water pipeline with water heater, constitutes loop body;
Cooling tower, is connected by circulating cooling water pump, recirculated cooling water pipeline with flue gas condenser, constitutes loop body;
Hot-air duct, is arranged in chimney, and its entrance point is connected with the hot-blast outlet end of air heater.
Further, the air inlet of the air heater is additionally provided with blower fan.
Further, flue gas condensing recirculated water water-distributing device is provided with the cooling tower and flue gas condensing recirculated water is filled out Material, the flue gas condensing recirculated water water-distributing device is arranged at the water inlet lower end in cooling tower, the flue gas condensing recirculated water Filler is arranged on flue gas condensing recirculated water water-distributing device lower end.
Further, also including pond partition wall and filler partition wall, the pond partition wall sets what cooling tower bottom was formed In pond, described filler partition wall is arranged on flue gas condensing circulation water packing
Further, the hot-air duct is arranged vertically along chimney direction.
The utility model has set the hot-air duct put vertically upward in chimney, sets blower fan outside chimney and air adds Hot device, water heater is set on the dry flue gas passage before desulfurization;Between water heater and air heater, cycling hot is set Water pump and circulating hot water pipeline, constitute hot water circulation loop structure;With hot-air pipeline connect chimney in hot-air duct and And air heater;Cooling tower is set outside flue gas condenser, will be cooled down by circulating cooling water pump, recirculated cooling water pipeline Tower and flue gas condenser are connected, and constitute cooling water circulation loop structure.
As a result of said structure, the utility model cooling tower is worked off one's feeling vent one's spleen middle CO2、SO2、NOX, flue dust etc. concentration it is remote Less than flue gas hundreds times, the steam partial pressure of droplet surface is far above the middle steam partial pressure of flue gas droplet, so, from cooling tower Water vapour droplet into air can dissipate in an atmosphere faster, so as to greatly reduce the formation of haze;Further, since cigarette Gas and cooling water directly contact, heat are mainly the mass transfer mode directly dissolved by water vapour, heat are brought into cooling water, Not only film coefficient of heat transfer is high, it is to avoid the problem of energy saving reduction and smoke flow resistance is small more than heat exchanger, can Flue gas blower fan power consumption is reduced, helps further to reduce SO in flue gas2、NOX, Hg, the influence of the harmful substance such as flue dust.
Brief description of the drawings
Fig. 1 is existing condensing heat-exchange method white-smoke-removing process principle figure;
Fig. 2 is existing white cigarette heat exchange method white-smoke-removing process principle figure;
Fig. 3 is the utility model structure principle chart.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described further to the utility model.
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain this Utility model, is not used to limit the utility model.
It is the improvement of existing white cigarette cancellation element the utility model discloses a kind of device for eliminating white cigarette, including:
Water heater, is arranged on heat smoke pipeline;
Desulfurization, wet cottrell, are set by the heat smoke pipeline after water heater;
Flue gas condenser, is arranged on by the heat smoke pipeline after desulfurization, wet cottrell;
Air heater, is connected by circulating hot-water pump, circulating hot water pipeline with water heater, constitutes loop body;
Cooling tower, is connected by circulating cooling water pump, recirculated cooling water pipeline with flue gas condenser, constitutes loop body;
Hot-air duct, is arranged in chimney, and its entrance point is connected with the hot-blast outlet end of air heater.
In the present embodiment, flue gas condenser structure is hollow-spraying-tower structure, or filling-material structure is provided with gas-liquid in outlet side Isolating construction.
Application method of the present utility model is as follows:
In more than 30 DEG C of temperature, even if the flue gas of vapour concentration 13% or so enters air from chimney, due to water vapour Diffusion rate is big in an atmosphere, is also not in white cigarette, the blower fan that can now stop, circulating cooling water pump and circulating hot-water pump, with Save power electric consumption;
When temperature is less high, such as 25 DEG C or so, the larger weather of humidity, flue gas slightly has white cigarette, now can only open Blower fan, allows normal temperature air first to mix with wet flue gas in chimney, reduces the vapour concentration in flue gas, you can eliminate chimney breast cigarette White cigarette in gas;
When temperature is relatively low, such as 15 DEG C or so, the also big weather of humidity then will simultaneously open blower fan and circulating hot water Pump, makes the heat of dry flue gas be transferred in hot-air by recirculated water, so as to reduce flue gas in desulfurization or wet static dedusting work The water that skill absorbs, hot-air mixes in chimney with wet flue gas, further reduces the relative humidity in flue gas, you can eliminate The white cigarette of chimney breast;
In temperature very low winter, then need to open flue gas condenser and circulating cooling water pump, blower fan and circulating hot water simultaneously Pump, after flue gas removes most of steam first in the flue gas condenser, flue gas again in chimney with hot-air combination drying heel row Enter air, you can eliminate white cigarette.
Above-described embodiment is preferred embodiment of the present utility model, is not the limit to technical solutions of the utility model System, as long as the technical scheme that can be realized on the basis of above-described embodiment without creative work, is regarded as falling into In the rights protection scope of the utility model patent.

Claims (5)

1. it is a kind of eliminate white cigarette device, it is characterised in that including:
Water heater, is arranged on heat smoke pipeline;
Desulfurization, wet cottrell, are set by the heat smoke pipeline after water heater;
Flue gas condenser, is arranged on by the heat smoke pipeline after desulfurization, wet cottrell;
Air heater, is connected by circulating hot-water pump, circulating hot water pipeline with water heater, constitutes loop body;
Cooling tower, is connected by circulating cooling water pump, recirculated cooling water pipeline with flue gas condenser, constitutes loop body;
Hot-air duct, is arranged in chimney, and its entrance point is connected with the hot-blast outlet end of air heater.
2. it is according to claim 1 it is a kind of eliminate white cigarette device, it is characterised in that the air inlet of the air heater Place is additionally provided with blower fan.
3. it is according to claim 1 it is a kind of eliminate white cigarette device, it is characterised in that be provided with flue gas in the cooling tower Condensation cycle water cloth water installations and flue gas condensing circulation water packing, the flue gas condensing recirculated water water-distributing device are arranged on cooling tower At interior water inlet lower end, the flue gas condensing circulation water packing is arranged on flue gas condensing recirculated water water-distributing device lower end.
4. a kind of device for eliminating white cigarette according to claim 3, it is characterised in that also including pond partition wall and filler every Wall, the pond partition wall is set in the pond that cooling tower bottom is formed, and described filler partition wall is arranged on flue gas condensing recirculated water In filler.
5. it is according to claim 1 it is a kind of eliminate white cigarette device, it is characterised in that the hot-air duct is along chimney Direction is arranged vertically.
CN201621326498.1U 2016-12-06 2016-12-06 A kind of device for eliminating white cigarette CN206285690U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621326498.1U CN206285690U (en) 2016-12-06 2016-12-06 A kind of device for eliminating white cigarette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621326498.1U CN206285690U (en) 2016-12-06 2016-12-06 A kind of device for eliminating white cigarette

Publications (1)

Publication Number Publication Date
CN206285690U true CN206285690U (en) 2017-06-30

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CN201621326498.1U CN206285690U (en) 2016-12-06 2016-12-06 A kind of device for eliminating white cigarette

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106512637A (en) * 2016-12-06 2017-03-22 四川省简阳空冷器制造有限公司 Device and method for removing white smoke
CN107433118A (en) * 2017-07-21 2017-12-05 上海交通大学 A kind of system and method for desulfurization fume eliminating white smoke
CN108579420A (en) * 2018-05-21 2018-09-28 襄阳泽东化工集团有限公司 Nitrate produces the processing system and treatment process of tail gas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106512637A (en) * 2016-12-06 2017-03-22 四川省简阳空冷器制造有限公司 Device and method for removing white smoke
CN106512637B (en) * 2016-12-06 2019-03-26 四川省简阳空冷器制造有限公司 A kind of device and method for eliminating white cigarette
CN107433118A (en) * 2017-07-21 2017-12-05 上海交通大学 A kind of system and method for desulfurization fume eliminating white smoke
CN108579420A (en) * 2018-05-21 2018-09-28 襄阳泽东化工集团有限公司 Nitrate produces the processing system and treatment process of tail gas

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