CN205208601U - A closed cigarette water heat exchange system for low temperature flue gas - Google Patents
A closed cigarette water heat exchange system for low temperature flue gas Download PDFInfo
- Publication number
- CN205208601U CN205208601U CN201521090289.7U CN201521090289U CN205208601U CN 205208601 U CN205208601 U CN 205208601U CN 201521090289 U CN201521090289 U CN 201521090289U CN 205208601 U CN205208601 U CN 205208601U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- heater
- exchange system
- gas
- heat exchange
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Chimneys And Flues (AREA)
Abstract
(B, ) the utility model relates to a closed cigarette water heat exchange system for low temperature flue gas. China thermal power factory uses coal to be main fuel, coal -fired unit boiler exhaust's flue gas behind traditional environmental protection equipments such as denitration, dust removal, desulfurization, in the flue gas to contain the pollutant still higher, still great to the environmental hazard. A closed cigarette water heat exchange system for low temperature flue gas which constitutes and includes: gas cooler (b) (b) 1 (b) (b), the gas cooler be connected with dust remover (b) (b) 2 (b) (b), circulating water pump (b) (b) 8 (b) (b), steam heater (b) (b) (6) (b) (b) respectively, the dust remover pass through the pipeline and be connected with draught fan (b) (b) (3) (b) (b), the draught fan pass through the pipeline and be connected with desulfurizing tower (b) (b) (4) (b) (b), the desulfurizing tower be connected with flue gas heater (b) (b) (5) (b) (b), the flue gas heater be connected with chimney (b) (b) (9) (b) (b), steam heater and condensate water heating (b) (b) (7) (b) (b) ware be connected, condense water heater with flue gas heater connection. The utility model discloses be applied to the fume emission heat transfer. (B, )
Description
technical field:
the utility model relates to a kind of closed cigarette hydrothermal exchange system for low-temperature flue gas.
background technology:
power Plant in China take coal as main fuel, and the flue gas of coal unit boiler emission is after the Traditional Environmental-protection equipment such as denitration, dedusting, desulfurization, and the contained pollutant in flue gas is still higher, still larger to environmental hazard.
tradition Thermal generation unit environmental protecting device mainly comprises: deduster, desulfurizing tower and chimney form.Traditional Environmental-protection equipment can not utilize the after-heat in low-temperature flue gas; Deduster efficiency of dust collection is not high, very easily causes reentrainment of dust; Desulfurizing tower sloughs DeGrain to the sulfur trioxide in flue gas oxysulfide and desulfurizing tower water consumption is excessive; As do not adopted any heater in desulfurizing tower flue gas downstream, after desulfurizing tower spray, in chimney, exhaust gas temperature is lower, and average flue-gas temperature, lower than 50 DEG C, causes chimney breast flue gas dilation angle less, very easily causes the atmospheric photochemistries such as haze to pollute.So in sum, tradition coal-burning power plant's environmental protection equipment energy consumption and water consumption higher, and not obvious to multiple pollutant removal effect, to environment and economy of power plant Efficiency larger, in today that environmental requirement is more and more higher, the index of correlation requirement of country and society can not be met.
under current environmental protection and Energy situation, reduce coal unit pollutant emission, with the further unit efficiency that improves, there is very important realistic meaning.Sulfur trioxide removal efficiency in conventional electric power generation unit environmental protection equipment and dust removal efficiency can not meet environmental requirement.The utility model utilizes gas cooler that the flue-gas temperature entering deduster is reduced to below flue gas acid dew point, it is 85 DEG C ~ 100 DEG C, now flue gas volume flow declines, the flue gas flow rate entering deduster declines, the time of staying of flue gas in deduster increases, and can improve the exhaust gas dust removal efficiency of deduster; Simultaneously because flue-gas temperature is down to below flue gas acid dew point, the sulfur trioxide drop in flue gas can be coated on exhaust gas dust particle in a large number, and sulfur trioxide together can be removed in deduster along with exhaust gas dust, greatly increases the removal efficiency of sulfur trioxide in flue gas.
because the temperature of flue gas in chimney is often lower than 50 DEG C, very easily form the atmospheric photochemistry environmental pollutions such as haze, the utility model arranges flue gas heater in desulfurizing tower exit, be increased to more than flue gas water dew point, it is 75 DEG C ~ 85 DEG C, increase the dilation angle of chimney breast flue gas, avoid droplet to be formed in compared with the air of low altitude area, effectively can alleviate the impact on atmospheric environment.
summary of the invention:
the purpose of this utility model is to provide a kind of closed cigarette hydrothermal exchange system for low-temperature flue gas, solves the problem of smoke emissioning pollution environment.
above-mentioned object is realized by following technical scheme:
a kind of closed cigarette hydrothermal exchange system for low-temperature flue gas, its composition comprises: gas cooler, described gas cooler is connected with deduster, water circulating pump, steam heater respectively, described deduster is connected with air-introduced machine by pipeline, described air-introduced machine is connected with desulfurizing tower by pipeline, described desulfurizing tower is connected with flue gas heater, described flue gas heater is connected with chimney, described steam heater is connected with condensation water heater, and described condensation water heater is connected with flue gas heater.
the beneficial effects of the utility model:
the utility model while effectively reducing Thermal generation unit environmental pollution, the heat again in recoverable part low-temperature flue gas.Utilize water circulating pump and multiple heat transmission equipment can form the closed circuit of a complete closure.When unit load is higher, when gas cooler inlet flue gas temperature is higher, it is required to flue gas liberated heat that the flue gas heat that gas cooler absorbs is greater than flue gas heater, steam off heater and condensation water heater bypass, open condensation water heater and steam heater bypass, unnecessary heat is used for adding Hot gas turbine condensate water, improves unit economy; Otherwise, during underload, when gas cooler inlet flue gas temperature is lower, it is required to flue gas liberated heat that the flue gas heat that gas cooler absorbs is less than flue gas heater, open steam heater and condensation water heater bypass, close condensation water heater and steam heater bypass, additional heat enters native system, makes flue gas heater be enough to flue-gas temperature to be increased to require temperature.
the utility model, while the pollutant emission reducing generating set, achieves the further raising of generating set economy.Described system architecture is simple, be easy to realize, easy for installation, have a good application prospect, power plant's operating cost can be reduced further, obvious facilitation is produced to the energy-conserving and environment-protective of power plant.
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present utility model.
detailed description of the invention:
embodiment 1:
a kind of closed cigarette hydrothermal exchange system for low-temperature flue gas, its composition comprises: gas cooler 1, described gas cooler is connected with deduster 2, water circulating pump 8, steam heater 6 respectively, described deduster is connected with air-introduced machine 3 by pipeline, described air-introduced machine is connected with desulfurizing tower 4 by pipeline, described desulfurizing tower is connected with flue gas heater 5, described flue gas heater is connected with chimney 9, described steam heater and condensate water heat 7 devices and are connected, and described condensation water heater is connected with described flue gas heater.
embodiment 2:
the closed cigarette hydrothermal exchange system for low-temperature flue gas according to embodiment 1 or 2, before described gas cooler is arranged in deduster along flow of flue gas direction, gas cooler utilizes recirculated water and flue gas heat exchange, reduce flue-gas temperature, heat exchange element material can adopt metal or nonmetal, and can adopt light pipe or extended surface tube pattern, flue-gas temperature can be reduced to below flue gas acid dew point, it is 85 DEG C ~ 100 DEG C, to improve efficiency of dust collection and sulfur trioxide removal efficiency.
embodiment 3:
the closed cigarette hydrothermal exchange system for low-temperature flue gas according to embodiment 1 or 2, after described flue gas heater is arranged in desulfurizing tower along flow of flue gas direction, flue gas heater utilizes recirculated water and flue gas heat exchange, improve flue-gas temperature, heat exchange element material can adopt metal or nonmetal, and can adopt light pipe or extended surface tube pattern, flue-gas temperature can be increased to more than flue gas water dew point, be 75 DEG C ~ 85 DEG C, increase flue gas dilation angle in an atmosphere, reduce haze and pollute occurrence probability.
embodiment 4:
the closed cigarette hydrothermal exchange system for low-temperature flue gas according to embodiment 1 or 2, after described steam heater is arranged in gas cooler along circulation water flow direction, steam heater utilizes recirculated water and steam heat-exchanging, improves circulating water temperature, can adopt shell-and-tube or baffle heater.
embodiment 5:
the closed cigarette hydrothermal exchange system for low-temperature flue gas according to embodiment 1 or 2, after described condensation water heater is arranged in steam heater along circulation water flow direction, condensation water heater utilizes recirculated water and the heat exchange of steam turbine condensate water, improve steam turbine condensing water temperature, shell-and-tube or baffle heater can be adopted.
embodiment 6:
according to embodiment 1, described water circulating pump 5 provides mobilization dynamic for whole system recirculated water, in order to overcome SR, can adopt centrifugal or axial flow pump.
embodiment 7:
the closed cigarette hydrothermal exchange system for low-temperature flue gas according to embodiment 1 or 2, flue gas enters the flue gas of deduster after gas cooler, flue-gas temperature is reduced to below flue gas acid dew point, it is 85 DEG C ~ 100 DEG C, flue gas volume flow declines, in deduster, flue gas flow rate declines, and gas residence time increases, and can improve the exhaust gas dust removal efficiency of deduster; Simultaneously because flue-gas temperature is down to below flue gas acid dew point, sulfur trioxide drop in flue gas is coated on exhaust gas dust particle in a large number, sulfur trioxide together can be removed in deduster along with exhaust gas dust, greatly increase the removal efficiency of sulfur trioxide, also reduce the entrance flue gas temperature of desulfurizing tower simultaneously, effectively can reduce desulfurizing tower water consumption.
enter the flue gas of chimney after flue gas heater, temperature is increased to more than flue gas water dew point, it is 75 DEG C ~ 85 DEG C, increase the dilation angle of chimney breast flue gas, avoid the formation of air low-to-medium altitude droplet, effectively can alleviate the impact of Thermal generation unit on atmospheric environment, reduce the occurrence probability that haze pollutes.
Claims (1)
1. the closed cigarette hydrothermal exchange system for low-temperature flue gas, its composition comprises: gas cooler, it is characterized in that: described gas cooler is connected with deduster, water circulating pump, steam heater respectively, described deduster is connected with air-introduced machine by pipeline, described air-introduced machine is connected with desulfurizing tower by pipeline, described desulfurizing tower is connected with flue gas heater, described flue gas heater is connected with chimney, described steam heater is connected with condensation water heater, and described condensation water heater is connected with flue gas heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521090289.7U CN205208601U (en) | 2015-12-24 | 2015-12-24 | A closed cigarette water heat exchange system for low temperature flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521090289.7U CN205208601U (en) | 2015-12-24 | 2015-12-24 | A closed cigarette water heat exchange system for low temperature flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205208601U true CN205208601U (en) | 2016-05-04 |
Family
ID=55846318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521090289.7U Active CN205208601U (en) | 2015-12-24 | 2015-12-24 | A closed cigarette water heat exchange system for low temperature flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205208601U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402755A (en) * | 2015-12-24 | 2016-03-16 | 哈尔滨锅炉厂有限责任公司 | Closed smoke-water heat exchange system for low-temperature smoke and working method |
| CN110787612A (en) * | 2019-10-25 | 2020-02-14 | 光大生物热电(六安)有限公司 | Biomass power generation recycling device and method |
-
2015
- 2015-12-24 CN CN201521090289.7U patent/CN205208601U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402755A (en) * | 2015-12-24 | 2016-03-16 | 哈尔滨锅炉厂有限责任公司 | Closed smoke-water heat exchange system for low-temperature smoke and working method |
| CN110787612A (en) * | 2019-10-25 | 2020-02-14 | 光大生物热电(六安)有限公司 | Biomass power generation recycling device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104100994B (en) | A kind of based on flue gas waste heat recovery and the boiler energy-saving emission-reduction system of thermal technology again | |
| CN103968401B (en) | Dedusting-desulfurization-UTILIZATION OF VESIDUAL HEAT IN integral system of low PM2.5 discharge | |
| CN204494453U (en) | A kind of energy-saving and emission-reduction system based on the exhaust heat stepped utilization of coal steam-electric plant smoke | |
| CN105937773A (en) | Power station boiler condensing flue gas dehumidification and purification energy-saving system | |
| CN208704475U (en) | A kind of flue gas for coking industry wet desulphurization takes off white system | |
| CN204438718U (en) | Residual heat from boiler fume drying brown coal system and boiler smoke system | |
| CN104165351A (en) | Emission reduction and energy conservation system without GGH | |
| CN105402761A (en) | Deep coupling utilization system for turbine steam exhaust waste heat and boiler flue gas waste heat | |
| CN205208601U (en) | A closed cigarette water heat exchange system for low temperature flue gas | |
| CN105289212A (en) | Smoke abatement water-saving method and device of desulfurization exhaust | |
| CN202733927U (en) | Smoke heating system and thermal power generating unit for increasing exhaust gas temperature of thermal power station chimney | |
| CN210729109U (en) | Novel coal-fired power generation ultralow emission flue gas pollution control system | |
| CN105402755A (en) | Closed smoke-water heat exchange system for low-temperature smoke and working method | |
| CN102645112B (en) | Waste heat recovery system for improving efficiency of electric dust collector | |
| CN206280944U (en) | A kind of coal fired power plant broad sense heat regenerative system of combination nature draught cooling tower | |
| CN202630747U (en) | Waste heat recovery system capable of improving efficiency of electric dust collector | |
| CN205109331U (en) | Desulfurization tail gas smoke elimination water saving fixtures | |
| CN104075303A (en) | Flue gas waste-heat utilization device for thermal oil furnace | |
| CN209885543U (en) | White smoke plume eliminating system for wet desulphurization | |
| CN204043443U (en) | Gas cooler | |
| CN210584458U (en) | Low-temperature flue gas white elimination system for wet desulphurization | |
| CN209116583U (en) | A kind of residual heat of electric power plant utilization system | |
| CN207137666U (en) | A kind of cigarette cooler for being applied to flue gas after burning combines mercury removal device with ultraviolet | |
| CN207763512U (en) | A kind of wet process of FGD white cigarette controlling device | |
| CN207907270U (en) | A kind of white misty rain joint flue gas waste heat recovery system of elimination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |