CN201344553Y - Water-borne type gas heat-exchanging device - Google Patents
Water-borne type gas heat-exchanging device Download PDFInfo
- Publication number
- CN201344553Y CN201344553Y CNU2009200102885U CN200920010288U CN201344553Y CN 201344553 Y CN201344553 Y CN 201344553Y CN U2009200102885 U CNU2009200102885 U CN U2009200102885U CN 200920010288 U CN200920010288 U CN 200920010288U CN 201344553 Y CN201344553 Y CN 201344553Y
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- water
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- flue gas
- borne type
- flue
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- 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
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- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
A water-borne type gas heat-exchanging device solves the problems due to installing a GGH in an existing wet process flue gas desulfurization device that the heat energy is wasted, the investment is huge, the occupied area is big, the device is corroded and scaled, water leakage is serious, and the like. The water-borne type gas heat-exchanging device comprises heat exchangers which are respectively connected with a hot flue gas chimney flue inlet and a cold flue gas chimney flue outlet. The water-borne type gas heat-exchanging device has the technical key points that the heat exchangers adopt water-borne type heat exchangers with finned pipe split-screen suspension structures which are provided with water circulation pipelines inside and take water as heat transfer medium, water inlets of the water circulation pipelines which are arranged in the water-borne type heat exchangers and exchange heat with the flue gas chimney flue are connected with a water tank through a pressure gauge, a motorised valve, a check valve and a circulation water tank which are arranged in turn, and the water outlets of the water circulation pipelines are connected with a heat supply device. The water-borne type gas heat-exchanging device has rational structure and design, convenient repair and easy operation, saves heat energy, improves the heat transfer efficiency and lowers the temperature of the hot flue gas which is not desulfurized prominently, increases the operation reliability, greatly lowers the investment cost of wet process flue gas desulfurization systems, and reduces the occupied area.
Description
Technical field
The utility model relates to a kind of heat-exchanger rig of boiler tail flue gas, particularly a kind of energy-saving hydrophily formula smoke heat replacing device.It is applicable to coal-burning boiler tail flue gas afterheat utilization.
Background technology
China is a developing country, is maximum in the world coal production and country of consumption.Atmosphere pollution mainly is coal-smoke pollution, and wherein the environmental pollution that causes of the sulfur dioxide of coal fired thermal power plant discharging is the most serious.Therefore, it is extremely urgent with the control sulfur dioxide pollution flue gas to be carried out desulfurization.At present, wet desulphurization accounts for more than 85% of unit total capacity that flue gas desulfurization is installed in the world, and wherein desulfurization method of limestone-gypsum accounts for 37%.Because wet desulphurization requires the absorption tower inlet temperature to be not more than 110 ℃, the method that reduces the absorption tower input gas temperature in the existing desulphurization system mainly is to adopt GGH (gas gasheater, gas-gas heat exchanger) heat exchange.The undesulfured flue gas that is come out by boiler back end ductwork passes through hot gas baffle door, after booster fan boosts, enter the GGH heat exchange from hot flue gas chimney intake, carry out gas-gas heat exchange and reduce flue-gas temperature, enter absorption and the purification of finishing sulfur dioxide in flue gas in the absorption tower from the cold flue gas flue outlet then, the purification flue gas after the desulfurization enters chimney through cold flue gas baffle door, flue gas flue.When wet desulphurization device broke down, flue gas directly entered chimney through bypass flue, by-pass damper door.The operation principle of the GGH that adopts and the rotary regenerative air preheater that structure is similar to station boiler utilize undesulfured hot flue gas to lower the temperature by the cold flue gas that sheet metal level and smooth or the band ripple or thermophore add behind the thermally desulfurizing.Owing to adopt the GGH heat exchange to reduce flue-gas temperature, wasted a large amount of heat energy, have that investment is huge, floor space big, a burn into fouling, the problem such as serious of leaking.So, need to develop heat-exchanger rig before the absorption tower that is fit to China's actual conditions at present.
The utility model content
The purpose of this utility model provides a kind of hydrophily formula smoke heat replacing device, it has solved in the existing wet flue gas desulfurizer must install the waste heat energy that GGH exists, invest that huge, floor space is big, burn into fouling, the problem such as serious of leaking, it is reasonable in design not only, be convenient to maintenance, easy operating, save heat energy, and significantly improve heat exchange efficiency and reduce the temperature of undesulfured hot flue gas, increase the wet flue gas desulfurizer reliability of operation, reduce the cost of investment of wet method fume desulfurizing system greatly and reduce floor space.
The technical scheme that the utility model adopted is: this hydrophily formula smoke heat replacing device comprises respectively and hot flue gas chimney intake, the heat exchanger that the cold flue gas flue outlet connects, its technical essential is: described heat exchanger adopt built-in water circulating pipe with the hydrophily formula heat exchanger of water as the finned tube split screen suspended structure of heat conduction media, be arranged on and carry out the water inlet of water circulating pipe of heat exchange by tactic Pressure gauge with the flue gas flue in the described hydrophily formula heat exchanger, motor-driven valve, check-valves, water circulating pump connects water tank, and the delivery port of described water circulating pipe connects heating plant.
Advantage and the good effect that the utlity model has are: because this device adopts water to replace GGH as the hydrophily formula heat exchanger of the finned tube split screen suspended structure of heat conduction media, so that in desulphurization system, reduce the absorption tower input gas temperature, its reasonable in design, be convenient to maintenance, easy operating, so it has solved in the existing wet flue gas desulfurizer waste heat energy that GGH exists must be installed, invest huge, floor space big, burn into fouling, problem such as leak seriously.Because of the water inlet that is arranged in the heat exchanger connects water tank by tactic Pressure gauge, motor-driven valve, check-valves, water circulating pump, the delivery port of water circulating pipe connects heating plant, make heated hot water be used for heating and bathing by the water circulating pipe that carries out heat exchange with the flue gas flue, realized the UTILIZATION OF VESIDUAL HEAT IN of the preceding boiler tail flue gas of wet process of FGD, so can significantly improve heat exchange efficiency, save heat energy, increased the wet flue gas desulfurizer reliability of operation, reduced the cost of investment of wet method fume desulfurizing system greatly and reduce floor space.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a kind of concrete structure schematic diagram of the present utility model.
Sequence number explanation among the figure: 1 hot flue gas chimney intake, 2 heating feed pipes, 3 hydrophily formula heat exchangers, 4 cold flue gas flue outlets, 5 Pressure gauges, 6 motor-driven valves, 7 check-valves, 8 water circulating pumps, 9 water tanks, 10 heating return pipes, 11 filling pipes.
The specific embodiment
Describe concrete structure of the present utility model in detail according to Fig. 1.This hydrophily formula smoke heat replacing device comprises the hydrophily formula heat exchanger 3 of the built-in water circulating pipe that is connected with hot flue gas chimney intake 1, cold flue gas flue outlet 4 respectively.As the heat conduction media, the profile of making finned tube split screen suspended structure is rectangular heat exchanger to this hydrophily formula heat exchanger 3 with water.The water inlet with the flue gas flue carries out the water circulating pipe of heat exchange that is arranged in the hydrophily formula heat exchanger 3 is connected water tank 9 by tactic Pressure gauge 5, motor-driven valve 6, check-valves 7, water circulating pump 8, the delivery port of water circulating pipe connects heating plant, and water tank 9 also is respectively arranged with heating return pipe 10 and filling pipe 11.The heating return pipe 2 of the heating plant in the present embodiment forms circulating line with the heating return pipe 10 that is connected water tank 9.And the cooling of the recirculated water of built-in water circulating pipe drops to below 110 ℃ hot flue-gas temperature by the undesulfured flue gas that hot flue gas chimney intake 1 enters in the hydrophily formula heat exchanger 3, enters the absorption tower through cold flue gas flue outlet 4 then and sprays desulfurization.
The course of work is as follows: the undesulfured flue gas that is come out by boiler back end ductwork passes through hot gas baffle door, after booster fan boosts, enter hydrophily formula heat exchanger 3 from hot flue gas chimney intake 1, and carrying out heat exchange with heat conduction media water, the water in the heat conduction media forms circulating lines by heating return pipe 2 and the heating return pipe 10 that is connected water tank 9 and carries out the water circulation.Water cooling in this circulating line drops to below 110 ℃ hot flue-gas temperature and is entered the absorption tower by the undesulfured flue gas that hot flue gas chimney intake 1 enters, with the safety in operation that guarantees the absorption tower with carry out the optimum response that desulfurization removes.
Claims (1)
1, a kind of hydrophily formula smoke heat replacing device, comprise the heat exchanger that is connected with hot flue gas chimney intake, cold flue gas flue outlet respectively, it is characterized in that: described heat exchanger adopt built-in water circulating pipe with the hydrophily formula heat exchanger of water as the finned tube split screen suspended structure of heat conduction media, the water inlet with the flue gas flue carries out the water circulating pipe of heat exchange that is arranged in the described hydrophily formula heat exchanger is connected water tank by tactic Pressure gauge, motor-driven valve, check-valves, water circulating pump, the delivery port connection heating plant of described water circulating pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200102885U CN201344553Y (en) | 2009-01-21 | 2009-01-21 | Water-borne type gas heat-exchanging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200102885U CN201344553Y (en) | 2009-01-21 | 2009-01-21 | Water-borne type gas heat-exchanging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201344553Y true CN201344553Y (en) | 2009-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200102885U Expired - Fee Related CN201344553Y (en) | 2009-01-21 | 2009-01-21 | Water-borne type gas heat-exchanging device |
Country Status (1)
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| CN (1) | CN201344553Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225816A (en) * | 2013-05-17 | 2013-07-31 | 延边石岘白麓纸业股份有限公司 | Heat supplying production line |
| CN103528038A (en) * | 2013-10-25 | 2014-01-22 | 上海蕲黄节能环保设备有限公司 | Condensation type float bed energy-saving dust-and-emission-reducing multipurpose boiler |
| CN105423369A (en) * | 2015-12-10 | 2016-03-23 | 合肥顺昌分布式能源综合应用技术有限公司 | Unpowered flue gas waste heat recovery and hot water supply system for commercial gas cooking ovens |
| CN112160898A (en) * | 2020-09-11 | 2021-01-01 | 西安新丝路能源科技有限公司 | Monitoring control device for safe operation of circulating water pump of thermal power plant |
-
2009
- 2009-01-21 CN CNU2009200102885U patent/CN201344553Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225816A (en) * | 2013-05-17 | 2013-07-31 | 延边石岘白麓纸业股份有限公司 | Heat supplying production line |
| CN103528038A (en) * | 2013-10-25 | 2014-01-22 | 上海蕲黄节能环保设备有限公司 | Condensation type float bed energy-saving dust-and-emission-reducing multipurpose boiler |
| CN103528038B (en) * | 2013-10-25 | 2015-01-14 | 上海蕲黄节能环保设备有限公司 | Condensation type float bed energy-saving dust-and-emission-reducing multipurpose boiler |
| CN105423369A (en) * | 2015-12-10 | 2016-03-23 | 合肥顺昌分布式能源综合应用技术有限公司 | Unpowered flue gas waste heat recovery and hot water supply system for commercial gas cooking ovens |
| CN112160898A (en) * | 2020-09-11 | 2021-01-01 | 西安新丝路能源科技有限公司 | Monitoring control device for safe operation of circulating water pump of thermal power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20170121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |