CN100520268C - Fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant - Google Patents
Fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant Download PDFInfo
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- CN100520268C CN100520268C CN 200610030242 CN200610030242A CN100520268C CN 100520268 C CN100520268 C CN 100520268C CN 200610030242 CN200610030242 CN 200610030242 CN 200610030242 A CN200610030242 A CN 200610030242A CN 100520268 C CN100520268 C CN 100520268C
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- fume
- heat pipe
- heat
- flue gas
- upper shell
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Abstract
The present invention relates to a fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant including a heat pipe, a tube sheet, a lower casing and a upper casing, wherein the lower casing and the upper casing are connected through the tube sheet on both sides. The two sides of the lower casing are respectively disposed with a hot smoke gas inlet, a hot smoke gas outlet. The two sides of the upper casing are respectively disposed with a cold smoke gas inlet, a cold smoke gas outlet. The heat pipe is vertically arranged between the lower casing and the upper casing, characterized in that, the heat pipe in the lower casing adopts the plain carbon steel with the low requirement of low temperature corrosion and low price or the Corten steel, while the heat pipe in the upper casing uses the ND steel having relatively high requirement of low temperature corrosion and high price or the corrosionproof stainless steel. The two heat pipes are welded, wherein the welded part is arranged on the joint of the upper casing and the lower casing. The advantages of the invention are with high heat utilization efficiency, no leakage, low operating energy consumption, small volume and convenient to maintain.
Description
Technical field
The present invention relates to a kind of fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant, belong to Coal,steam plant with FGD environmental protection and energy saving technical field.
Background technology
Thermal power plant fired power generating unit flue gas desulfurization at present has been inevitable requirement.The flue-gas temperature of boiler emission is generally about 130 ℃, in wet desulphurization, at first this temperature to be reduced to about 90 ℃ from 130 ℃, then could high-efficiency desulfurization, about 40～50 ℃ of the flue-gas temperature that flows out after the desulfurization in the desulfurizing tower, the consideration that needs from environmental protection and afterbody corrosion protection of equipment need export this cigarette temperature and be heated to 60～80 ℃ by 40～50 ℃.
Cool to about 90 ℃ from 130 ℃, many at present with swinging flue gas-flue gas heat exchange device and 2 kinds of modes of spray cooling, be warmed up to about 60～80 ℃ from 40～50 ℃, many at present with swinging flue gas-flue gas heat exchange device and steam-2 kinds of modes of flue gas heat exchange device, wherein swinging flue gas-flue gas heat exchange device heat-transfer surface adopts resistant material, and floor space is big, equipment price is high and maintenance load is big.
Summary of the invention
The purpose of this invention is to provide a kind of fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant, realization is transferred to the flue gas heat of relatively-high temperature the flue gas of relative low temperature, under the prerequisite that satisfies each link heat demand of system, reach purpose energy-conservation and water saving.
For realizing above purpose, technical scheme of the present invention provides a kind of fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant, by heat pipe, tube sheet, lower house, upper shell is formed, lower house is connected with the tube sheet of upper shell by both sides, the lower house both sides are respectively equipped with hot gas approach, hot exhanst gas outlet, the upper shell both sides are respectively equipped with the cold flue gas import, the cold flue gas outlet, heat pipe is vertical in the middle of lower house and the upper shell, it is characterized in that, described heat pipe is welded into by first heat pipe and second heat pipe, its weld is located at the junction of lower house and upper shell, described first heat pipe is located in the lower house, adopt low temperature resistant corrosion less demanding, the ordinary carbon steel that price is lower or examine a time steel and make, described second heat pipe is located in the upper shell, adopts low temperature resistant corrosion requirement higher relatively, higher ND steel or the corrosion-resistant stainless steel of price made.
Owing to the equal factor of sulfuric acid vapor content in moisture difference, the flue gas in content of ashes difference, the flue gas in flue-gas temperature difference, the flue gas, make flue gas dew point temperature difference, that is: the cold end corrosion situation of the hot junction of heat pipe flue gas-flue gas heat exchange device and cold junction is different, the present invention is directed to flue gas-flue gas heat exchange of heat pipe hot junction cold end corrosion situation different with cold junction, adopt the heat resistant material of unlike material, material is worked according to his ability, just right, under the prerequisite that does not influence function of use, effectively reduce equipment cost.
Advantage of the present invention be heat energy utilization rate height, substantially do not have leakage, operation energy consumption is low, volume is little, price is low, convenience easy to maintenance.
Description of drawings
Fig. 1 is a kind of fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant structural representation.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, be a kind of fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant structural representation, described fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant is by heat pipe 1, tube sheet 2, lower house 3, upper shell 4 is formed, lower house 3 is connected with the tube sheet 2 of upper shell 4 by both sides, lower house 3 both sides are respectively equipped with hot gas approach 6, hot exhanst gas outlet 7, upper shell 4 both sides are respectively equipped with cold flue gas import 8, cold flue gas outlet 9, heat pipe 1 is vertical in the middle of lower house 3 and the upper shell 4, first heat pipe of being located in the lower house 3 10 adopts low temperature resistant corrosion less demanding, the ordinary carbon steel that price is lower or examine a time steel and make, second heat pipe 11 of being located at upper shell 4 adopts low temperature resistant corrosion to require higher relatively, higher ND steel or the corrosion-resistant stainless steel of price made, first heat pipe 10 and second heat pipe 11 are welded into heat pipe 1, and its weld is located at the junction of lower house 3 and upper shell 4.
Flue gas-flue gas heat exchange of heat pipe is installed in the flue gas desulphurization system flue, when hot flue gas enters heat pipe flue gas-flue gas heat exchange device from the hot gas approach 6 of lower house 3, to flow out from hot exhanst gas outlet 7 behind the medium in heat transferred first heat pipe 10 of hot flue gas, medium flows in second heat pipe 11 of upper shell 4 in first heat pipe 10, the cold flue gas that heat transferred is come in from the cold flue gas import 8 of upper shell 4, flow out from cold flue gas outlet 9 after the cold flue gas heating, finish transfer of heat, reduce the hot flue-gas temperature of import, improve the purpose that exports the cold flue gas temperature.
Heat pipe outer surface adopts efficient expansion fin heating surface, makes that flue gas-flue gas heat exchange of heat pipe volume is little, and floor space is few; The heat pipe hot junction is adopted the ordinary carbon steel that low temperature resistant corrosion is less demanding, price is lower or is examined a steel and make, thereby has reduced equipment manufacturing cost; Heat pipe is single to have a style of one's own, and changes easily, and maintenance load is little.
Claims (1)
1. a flue gas desulphurization is with flue gas one flue gas heat exchange of heat pipe, by heat pipe (1), tube sheet (2), lower house (3), upper shell (4) is formed, lower house (3) is connected with the tube sheet (2) of upper shell (4) by both sides, lower house (3) both sides are respectively equipped with hot gas approach (6), hot exhanst gas outlet (7), upper shell (4) both sides are respectively equipped with cold flue gas import (8), cold flue gas outlet (9), heat pipe (1) is vertical in the middle of lower house (3) and the upper shell (4), it is characterized in that, described heat pipe (1) is welded into by first heat pipe (10) and second heat pipe (11), its weld is located at the junction of lower house (3) and upper shell (4), described first heat pipe (10) is located in the lower house (3), adopt low temperature resistant corrosion less demanding, the ordinary carbon steel that price is lower or examine a time steel and make, described second heat pipe (11) is located in the upper shell (4), adopts low temperature resistant corrosion requirement higher relatively, higher ND steel or the corrosion-resistant stainless steel of price made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610030242 CN100520268C (en) | 2006-08-21 | 2006-08-21 | Fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610030242 CN100520268C (en) | 2006-08-21 | 2006-08-21 | Fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1908568A CN1908568A (en) | 2007-02-07 |
| CN100520268C true CN100520268C (en) | 2009-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610030242 Expired - Fee Related CN100520268C (en) | 2006-08-21 | 2006-08-21 | Fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100520268C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102188888A (en) * | 2011-04-12 | 2011-09-21 | 王晓晔 | A wet method treatment process of purified flue gas with a water collection function in the process and a processing apparatus thereof |
| CN102614757B (en) * | 2012-04-20 | 2014-03-12 | 山东国舜建设集团有限公司 | Fin-type double-phase steel heat pipe exchanger and flue gas desulfurization equipment using same |
| CN104864410A (en) * | 2014-02-21 | 2015-08-26 | 中石化洛阳工程有限公司 | Cast-iron heat tube air preheater |
| CN103968406B (en) * | 2014-05-13 | 2016-06-01 | 上海发电设备成套设计研究院 | A kind of hydrophily flue gas-smoke heat exchanging system and method that can prevent low temperature corrosion |
| CN105277029A (en) * | 2015-11-26 | 2016-01-27 | 烟台创元热能科技有限公司 | Heat pipe type smoke reheater |
-
2006
- 2006-08-21 CN CN 200610030242 patent/CN100520268C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1908568A (en) | 2007-02-07 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20190821 |