CN105423325A - Steam cooling system for low-temperature smoke and working method - Google Patents
Steam cooling system for low-temperature smoke and working method Download PDFInfo
- Publication number
- CN105423325A CN105423325A CN201510983664.9A CN201510983664A CN105423325A CN 105423325 A CN105423325 A CN 105423325A CN 201510983664 A CN201510983664 A CN 201510983664A CN 105423325 A CN105423325 A CN 105423325A
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- China
- Prior art keywords
- steam
- flue gas
- temperature
- steam condenser
- cooling system
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Classifications
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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention relates to a steam cooling system for low-temperature smoke and a working method. A traditional coal-fired generator set adopts no heating device at the smoke downstream of a desulfurization tower; and the smoke discharge temperature in a chimney is lower after the spraying by the desulfurization tower. The steam cooling system for low-temperature smoke comprises a desulfurization tower (1); the desulfurization tower is connected with a steam cooler (2); the steam cooler is respectively connected with a chimney (3), an auxiliary steam input device (4) and a drain tank (7); the drain tank (7) is connected with a boiler drainage system (6); and an adjusting valve (5) is mounted between the auxiliary steam input device and the steam cooler. The steam cooling system is applied to the smoke temperature adjustment.
Description
technical field:
the present invention relates to a kind of steam cooling system for low-temperature flue gas and method of work.
background technology:
power Plant in China take coal as main fuel, containing a large amount of moisture and dust in flue gas after coal burning, as flue-gas temperature is lower, these moisture and dust enter can in the short period of time in air, suspend in low altitude area air and gather formation droplet, droplet is combined with dust again, very easily forms haze.
tradition Thermal generation unit is not as adopted any heater in desulfurizing tower flue gas downstream, and in desulfurizing tower spray after funnel, exhaust gas temperature is lower, and average flue-gas temperature is lower than 50 DEG C.The developed country such as American-European, Japanese is to Thermal generation unit, and have clear and definite regulation through chimney discharged to the flue-gas temperature of air, wherein the U.S. and Japan require to be not less than 80 DEG C, and Britain requires to be not less than 72 DEG C.Keep higher flue-gas temperature in chimney, not only effectively can reduce the formation probability of haze in air, also can alleviate the cold end corrosion phenomenon of flue gas to metalwork in chimney, reduce power plant operation and maintenance expense.
summary of the invention:
the object of this invention is to provide a kind of steam cooling system for low-temperature flue gas and method of work, solve the problem that smog discharge temperature is inadequate.
above-mentioned object is realized by following technical scheme:
a kind of steam cooling system for low-temperature flue gas, its composition comprises: desulfurizing tower, described desulfurizing tower is connected with steam condenser, described steam condenser is connected with chimney, auxiliary steam input unit, drain tank respectively, described drain tank is connected with boiler draining system, is provided with control valve between described auxiliary steam input unit and steam condenser.
utilize a method of work for the steam cooling system for low-temperature flue gas described in claim 1, the method comprises the steps:
first, after steam condenser is arranged in desulfurizing tower along flow of flue gas direction, steam condenser utilizes power plant's auxiliary steam and flue gas heat exchange, improve flue-gas temperature, flue-gas temperature being increased to more than flue gas water dew point, is 75 DEG C ~ 85 DEG C, the flue gas dilation angle entered in air can be made greatly to increase, can atmospheric environment be improved, effectively reduce the formation probability of haze in air, and alleviate chimney corrosion;
condense into water after auxiliary steam heat release, flow into drain tank by tube connector, finally recycled by boiler draining system.The steam flow entering steam condenser is regulated by the control valve of steam condenser porch, when unit load is higher, when exhaust gas volumn is larger, strengthens control valve opening; Otherwise, when unit is in underload, then reduce control valve opening.
beneficial effect of the present invention:
the present invention utilizes power plant's auxiliary steam directly to add heat smoke, more than flue gas to flue gas water dew point, it is 75 DEG C ~ 85 DEG C, water is condensed into after auxiliary steam heat release, condensate water is by the connecting pipe between steam condenser and drain tank, enter drain tank, finally get back to boiler of power plant draining system and recycle.Auxiliary steam flow can use the control valve being arranged in steam condenser entrance to regulate through row, and when unit is in high load capacity, exhaust gas volumn is comparatively large, strengthens control valve opening, the steam flow entering steam condenser being increased, adding heat smoke to requiring temperature; Otherwise, when unit is in underload, then reduce control valve opening.
the present invention alleviate coal unit to ambient influnence while, reduce chimney corrosion.Described apparatus structure is simple, be easy to realize, easy for installation, have a good application prospect, to development environment friendly, resource-conserving Thermal generation unit important in inhibiting.
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present invention.
detailed description of the invention:
embodiment 1:
a kind of steam cooling system for low-temperature flue gas, its composition comprises: desulfurizing tower 1, described desulfurizing tower is connected with steam condenser 2, described steam condenser is connected with chimney 3, auxiliary steam input unit 4, drain tank 7 respectively, described drain tank is connected with boiler draining system 6, is provided with control valve 5 between described auxiliary steam input unit and described steam condenser.
embodiment 2:
the steam cooling system for low-temperature flue gas according to embodiment 1, described steam condenser is along after flow of flue gas direction is arranged in desulfurizing tower, steam condenser utilizes power plant's auxiliary steam and flue gas heat exchange, improve more than flue-gas temperature to flue gas water dew point, be 75 DEG C ~ 85 DEG C, after auxiliary steam heat release, condense into water.
embodiment 3:
the steam cooling system for low-temperature flue gas according to embodiment 1, described drain tank is connected with steam condenser by pipeline, and the condensate water formed after storing auxiliary steam heat release, condensate water is finally got back to boiler draining system and reclaimed.
embodiment 4:
the steam condenser for low-temperature flue gas according to embodiment 1, described control valve is arranged in the steam side entrance of steam condenser, is used for regulating the auxiliary steam flow entering steam condenser.
embodiment 5:
utilize a method of work for the steam cooling system for low-temperature flue gas described in claim 1, the method comprises the steps:
first, after steam condenser is arranged in desulfurizing tower along flow of flue gas direction, steam condenser utilizes power plant's auxiliary steam and flue gas heat exchange, improve flue-gas temperature, flue-gas temperature being increased to more than flue gas water dew point, is 75 DEG C ~ 85 DEG C, the flue gas dilation angle entered in air can be made greatly to increase, can atmospheric environment be improved, effectively reduce the formation probability of haze in air, and alleviate chimney corrosion;
condense into water after auxiliary steam heat release, flow into drain tank by tube connector, finally recycled by boiler draining system.The steam flow entering steam condenser is regulated by the control valve of steam condenser porch, when unit load is higher, when exhaust gas volumn is larger, strengthens control valve opening; Otherwise, when unit is in underload, then reduce control valve opening.
Claims (2)
1. the steam cooling system for low-temperature flue gas, its composition comprises: desulfurizing tower, it is characterized in that: described desulfurizing tower is connected with steam condenser, described steam condenser is connected with chimney, auxiliary steam input unit, drain tank respectively, described drain tank is connected with boiler draining system, is provided with control valve between described auxiliary steam input unit and steam condenser.
2. utilize a method of work for the steam cooling system for low-temperature flue gas described in claim 1, it is characterized in that: the method comprises the steps:
First, after steam condenser is arranged in desulfurizing tower along flow of flue gas direction, steam condenser utilizes power plant's auxiliary steam and flue gas heat exchange, improve flue-gas temperature, flue-gas temperature being increased to more than flue gas water dew point, is 75 DEG C ~ 85 DEG C, the flue gas dilation angle entered in air can be made greatly to increase, can atmospheric environment be improved, effectively reduce the formation probability of haze in air, and alleviate chimney corrosion; Condense into water after auxiliary steam heat release, flow into drain tank by tube connector, finally recycled by boiler draining system, the steam flow entering steam condenser is regulated by the control valve of steam condenser porch, when unit load is higher, when exhaust gas volumn is larger, strengthen control valve opening; Otherwise, when unit is in underload, then reduce control valve opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510983664.9A CN105423325A (en) | 2015-12-24 | 2015-12-24 | Steam cooling system for low-temperature smoke and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510983664.9A CN105423325A (en) | 2015-12-24 | 2015-12-24 | Steam cooling system for low-temperature smoke and working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105423325A true CN105423325A (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510983664.9A Pending CN105423325A (en) | 2015-12-24 | 2015-12-24 | Steam cooling system for low-temperature smoke and working method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105423325A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185866A (en) * | 2019-04-19 | 2019-08-30 | 江苏惠泽润尔能源科技有限公司 | High-pressure heater hydrophobic pipeline anti-scouring system |
| CN113813634A (en) * | 2021-08-23 | 2021-12-21 | 中国神华煤制油化工有限公司 | Condensate recovery equipment and methanol-to-olefin device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202203970U (en) * | 2011-08-05 | 2012-04-25 | 洛阳蓝海实业有限公司 | Secondary energy saving and utilizing device for furnace exhaust gas waste heat |
| CN102494329A (en) * | 2011-12-21 | 2012-06-13 | 王俊杰 | Device for utilizing flue gas waste heat of boiler comprehensively |
| CN103574630A (en) * | 2012-07-19 | 2014-02-12 | 中国电力工程顾问集团华东电力设计院 | Method for improving temperature of smoke discharged by chimney of thermal power plant, smoke heating system and thermal power generation unit |
| CN204026714U (en) * | 2014-05-29 | 2014-12-17 | 舒少辛 | A kind of device of fume afterheat comprehensive utilization |
| CN205208604U (en) * | 2015-12-24 | 2016-05-04 | 哈尔滨锅炉厂有限责任公司 | A steam cooling system for low temperature flue gas |
-
2015
- 2015-12-24 CN CN201510983664.9A patent/CN105423325A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202203970U (en) * | 2011-08-05 | 2012-04-25 | 洛阳蓝海实业有限公司 | Secondary energy saving and utilizing device for furnace exhaust gas waste heat |
| CN102494329A (en) * | 2011-12-21 | 2012-06-13 | 王俊杰 | Device for utilizing flue gas waste heat of boiler comprehensively |
| CN103574630A (en) * | 2012-07-19 | 2014-02-12 | 中国电力工程顾问集团华东电力设计院 | Method for improving temperature of smoke discharged by chimney of thermal power plant, smoke heating system and thermal power generation unit |
| CN204026714U (en) * | 2014-05-29 | 2014-12-17 | 舒少辛 | A kind of device of fume afterheat comprehensive utilization |
| CN205208604U (en) * | 2015-12-24 | 2016-05-04 | 哈尔滨锅炉厂有限责任公司 | A steam cooling system for low temperature flue gas |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185866A (en) * | 2019-04-19 | 2019-08-30 | 江苏惠泽润尔能源科技有限公司 | High-pressure heater hydrophobic pipeline anti-scouring system |
| CN113813634A (en) * | 2021-08-23 | 2021-12-21 | 中国神华煤制油化工有限公司 | Condensate recovery equipment and methanol-to-olefin device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160323 |