CN202315654U - Flue gas dewatering and reheating device - Google Patents
Flue gas dewatering and reheating device Download PDFInfo
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- CN202315654U CN202315654U CN2011204427826U CN201120442782U CN202315654U CN 202315654 U CN202315654 U CN 202315654U CN 2011204427826 U CN2011204427826 U CN 2011204427826U CN 201120442782 U CN201120442782 U CN 201120442782U CN 202315654 U CN202315654 U CN 202315654U
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- heat exchanger
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Abstract
The utility model provides a flue gas dewatering and reheating device which is used for effectively realizing dewatering and reheating of flue gas discharged from an industrial boiler or industrial furnace. The flue gas dewatering and reheating device comprises a flue, a heat pipe gas-to-gas heat exchanger and an enamel pipe condensation dryer; the flue is connected with a lower layer of the heat pipe gas-to-gas heat exchanger, the enamel pipe condensation dryer and an upper layer of the heat pipe gas-to-gas heat exchanger in sequence; a S-shaped heat exchange pipe of the enamel pipe condensation dryer is respectively connected with a cold water pipe and a hot water pipe; high-temperature wet flue enters from the lower layer of the heat pipe gas-to-gas heat exchanger and is preliminarily cooled, then enters the condensation dryer for heat exchange with water and is further cooled after being subjected to heat exchange; the flue gas which is subjected to cooling condensation dewatering and mechanical dewatering enters the upper layer of the heat pipe gas-to-gas heat exchanger and absorbs heat of high-temperature flue gas which is transferred from a heat pipe and passes through the lower layer of the heat pipe gas-to-gas heat exchanger; and dry flue which is heated by the upper layer of the heat pipe gas-to-gas heat exchanger passes through the flue, is pressurized by a draught fan and is discharged through a chimney finally. Due to adoption of the flue gas dewatering and reheating device disclosed by the utility model, local acid rain can be prevented from generating around the industrial boiler or industrial furnace, the diffusion capability of the flue gas is enhanced, and the pollution is reduced.
Description
Technical field
The utility model relates to when moisture is higher in the flue gas that is produced after Industrial Boiler, the industrial furnace fuel combustion; The method and apparatus that heats up again through condensation dehydration; Relate in particular to thermo-power station, boiler such as waste incineration power station particularly, the dehydration reheat machine of the higher flue gas of the moisture that produces.
Background technology
Often water content is higher for generating plant flue gas after wet desulphurization, denitration, the particularly flue gas in waste incineration power station, and its water content is prone to form white cigarette generally 25-30% winter, causes power station local acid rain on every side, and is bigger to the harm of power station ambient contamination.Around in the power station, produce local acid rain, need remove the moisture in the flue gas in advance, and then improve flue-gas temperature, improve the diffusivity of flue gas.
Because of containing corrosive substance and harmful substance such as sulfur oxide in the flue gas, when its cooling condensation, can produce heavy corrosion to equipment.Usually adopt the water spraying cooling at present, and then heat up.Yet water spray back flue gas can contain a large amount of mechanical waters, follow-up intensification difficulty, and water consumption is big, handles in the water of back to contain a large amount of harmful substances, the wastewater treatment difficulty.Simultaneously, a large amount of heats of flue gas can not be recovered utilization.
Summary of the invention
The utility model technical problem to be solved is, a kind of effective realization thermo-power station discharging fume-dehydrating and reheater are provided, and produces local acid rain around avoiding in the power station, strengthens the diffusivity of flue gas, reduces and pollutes.
The utility model comprises flue and smoke heat replacing device, and said smoke heat replacing device comprises heat pipe gas-gas heat exchanger, enamel pipe condensate dryer; Flue connects heat pipe gas-gas heat exchanger lower floor, enamel pipe condensate dryer, heat pipe gas-gas heat exchanger upper strata successively; The snakelike heat exchange tube of enamel pipe condensate dryer connects cold water pipe and hot-water line respectively.
As hot-water line being connected to cold pouring tower, cold pouring tower below is provided with water cooling pond, and water cooling pond is connected with cold water pipe through water pump, then the hot water heat transfer process that is used for the enamel pipe condensate dryer capable of circulation.
Because of the processing flue gas contains the deep-etching material; Be corroded for fear of heat exchange element, said enamel hot pipe gas-gas heat exchanger is heat transfer element with the heat pipe, and heat pipe is carbon steel light pipe or finned tube; According to the corrosion situation, the part or all of outer surface of the endotherm section of heat pipe and heat release section burns plating enamel; Said enamel pipe condensate dryer is heat transfer element with the snakelike heat exchange tube, and snakelike heat exchange tube is carbon steel light pipe or finned tube, sidles flue gas outward, leakes water in the inboard, and its outer surface burns plating enamel.
For guaranteeing the fume-dehydrating effect, set up a mechanical dehydration device between the upper strata smoke inlet of enamel pipe condensate dryer exhanst gas outlet and heat pipe gas-gas heat exchanger.The dewatering elements of said mechanical dehydration device should adopt resistant material.Said mechanical dehydration device can be the folded plate type dehydrator, venetian blind type dehydrator, spiral-flow type dehydrator, any flue gas machinery such as screen type dehydrator dehydrator.
Simultaneously; Said enamel hot pipe gas-gas heat exchanger flue gas passes through the shell inner surface of part through shell inner surface partly and mechanical dehydration device flue gas through the shell inner surface of part, said enamel pipe condensate dryer flue gas; All lay heatproof glass flakes resin anticorrosive coat or acidproof unsetting pours protective layer, not perishable to guarantee the apparatus casing inner surface.
The housing outer surface of said heat pipe gas-gas heat exchanger is laid heat-insulation layer.
In addition, said flue is a carbon steel material, and flue gas lays heatproof glass flakes resin anticorrosive coat through the flue shell inner surface of part, and the outer surface of flue housing lays heat-insulation layer; Said chimney internal layer is carbon steel material and lays heatproof glass flakes resin anticorrosive coat that the chimney skin is a concrete material.
Bottom in heat pipe gas-gas heat exchanger or enamel pipe condensate dryer can be provided with water transport port, to discharge condensed water etc.
On the flue of the flue gas import and export that connects the enamel hot pipe gas-gas heat exchanger, bypath valve is set, to make things convenient for overhaul of the equipments.
Adopt the heat dry flue gas of wet flue gas during the utility model flue gas reheat, need not add heat.The hot water discord flue gas contact that produces during the flue gas cooling, not contaminated, this hot water heat still is all recyclable utilization of water, and the utilization that fully improves flue gas heat energy reduces pollution emissions.Compare with prior art, the utlity model has following advantage:
1, has higher anti-low temperature sulfur corrosion ability;
When 2, flue gas heats again, do not need to add again heat;
3, cooling water discord flue gas contact, not contaminated, do not need sewage disposal, heat and water can utilize.
Description of drawings
Fig. 1 is the overall structure sketch map of the said device of the utility model;
Fig. 2 is the enamel hot pipe gas-gas heat exchanger structural representation that the utility model adopts;
Fig. 3 is the enamel pipe condensate dryer structural representation that the utility model adopts.
Among the figure: 1-enamel hot pipe gas-gas heat exchanger, 2-enamel pipe condensate dryer, 3-mechanical dehydration device, 4-water pump, 5-pond, 6-cold pouring tower, 7-valve sets, 8-flue, 9-blower fan, 10-chimney, 11-cold water pipe, 12-hot-water line.
The specific embodiment
As shown in Figure 1: the said device of the utility model comprises enamel hot pipe gas-gas heat exchanger 1, enamel pipe condensate dryer 2, mechanical dehydration device 3, water pump 4, pond 5, cold pouring tower 6, valve sets 7, flue 8, blower fan 9 and chimney 10, cold water pipe 11, hot-water line 12.
As shown in Figure 1: flue 8 connects lower floor, enamel pipe condensate dryer 2, the mechanical dehydration device 3 of enamel hot pipe gas-gas heat exchanger 1, upper strata, blower fan 9 and the chimney 10 of enamel hot pipe gas-gas heat exchanger 1 successively.The snakelike heat exchange tube of water pump 4, cold water pipe 11, enamel pipe condensate dryer 2, hot-water line 12, cold pouring tower 6 connect successively, and cold pouring tower 6 belows are provided with pond 5.The bypath valve group 7 that on the flue of the flue gas import and export that connects the enamel hot pipe gas-gas heat exchanger, is provided with can be convenient to maintenance of equipment.
As shown in Figure 2, enamel hot pipe gas-gas heat exchanger 1 is divided into the two-layer up and down of mutual isolation, vertically arranges as the heat pipe 1A of heat exchange element.
As shown in Figure 3, the heat exchanger tube of enamel pipe condensate dryer 2 is snakelike heat exchange tube 2A, and snakelike heat exchange tube 2A can vertically arrange, but also horizontal arrangement.
During actual motion, flow is that 65000 Nm3/h, temperature are that 150 ℃ flue gas gets into from the lower floor of enamel hot pipe gas-gas heat exchanger 1, and through heat exchange, flue-gas temperature is reduced to 95 ℃, gets into enamel pipe condensate dryer 2 and water heat exchange then, and flue-gas temperature is reduced to 50 ℃.The temperature of coming out from enamel pipe condensate dryer 2 is 50 ℃ a flue gas, removes mechanical water through mechanical dehydration device 3 again.Flue gas is reduced to 50 ℃ from 150 ℃, and after removing mechanical water through mechanical dehydration device 3 again, its final water content will reduce to 14% from 28%.Simultaneously, through the water of water pump 4 with 20 ℃, flow is about 78 tons/h, and in the coiled pipe of cold water pipe 11 input enamel pipe condensate dryer 2, water temperature can reach 70 ℃ after heat exchange.Most of hot water is used for other purpose.Unnecessary hot water is stored in the pond 5 after cold pouring tower 6 coolings.Flue gas flow behind cooling condensation dehydration and mechanical dehydration is 55000Nm3/h, gets into the epimere of enamel hot pipe gas-gas heat exchanger 1 again, absorbs the heat that heat pipe transmits, and flue-gas temperature is heated to 115 ℃.Heat up the back flue gas through flue 8, through blower fan 9 pressurizations, from chimney 10 dischargings.
Claims (7)
1. a fume-dehydrating reheat machine comprises flue and smoke heat replacing device, it is characterized in that: said smoke heat replacing device comprises heat pipe gas-gas heat exchanger, enamel pipe condensate dryer; Flue connects heat pipe gas-gas heat exchanger lower floor, enamel pipe condensate dryer, heat pipe gas-gas heat exchanger upper strata successively; The snakelike heat exchange tube of enamel pipe condensate dryer connects cold water pipe and hot-water line respectively.
2. fume-dehydrating reheat machine according to claim 1 is characterized in that: said heat pipe gas-gas heat exchanger is heat transfer element with the heat pipe, and heat pipe is carbon steel light pipe or finned tube, and the part or all of outer surface of the endotherm section of heat pipe and heat release section burns plating enamel; Said enamel pipe condensate dryer is heat transfer element with the snakelike heat exchange tube, and snakelike heat exchange tube is carbon steel light pipe or finned tube, and its outer surface burns plating enamel.
3. fume-dehydrating reheat machine according to claim 1 is characterized in that: between the upper strata smoke inlet of enamel pipe condensate dryer exhanst gas outlet and heat pipe gas-gas heat exchanger, set up a mechanical dehydration device.
4. fume-dehydrating reheat machine according to claim 3; It is characterized in that: said heat pipe gas-gas heat exchanger flue gas passes through the shell inner surface of part and the shell inner surface that mechanical dehydration device flue gas passes through part through the shell inner surface of part, said enamel pipe condensate dryer flue gas, all lays heatproof glass flakes resin anticorrosive coat or acidproof unsetting pours protective layer.
5. fume-dehydrating reheat machine according to claim 1 is characterized in that: the outer surface of said heat pipe gas-gas heat exchanger housing lays heat-insulation layer.
6. fume-dehydrating reheat machine according to claim 1 is characterized in that: said flue is a carbon steel material, and flue gas lays heatproof glass flakes resin anticorrosive coat through the flue shell inner surface of part, and the outer surface of flue housing lays heat-insulation layer.
7. fume-dehydrating reheat machine according to claim 1 is characterized in that:: the bottom in heat pipe gas-gas heat exchanger or enamel pipe condensate dryer is provided with the water transport port that can discharge condensed water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204427826U CN202315654U (en) | 2011-11-10 | 2011-11-10 | Flue gas dewatering and reheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204427826U CN202315654U (en) | 2011-11-10 | 2011-11-10 | Flue gas dewatering and reheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202315654U true CN202315654U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204427826U Expired - Lifetime CN202315654U (en) | 2011-11-10 | 2011-11-10 | Flue gas dewatering and reheating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202315654U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500199A (en) * | 2011-11-10 | 2012-06-20 | 南京圣诺热管有限公司 | Flue gas dehydrating and reheating method and device |
| CN104110969A (en) * | 2014-07-11 | 2014-10-22 | 深圳市华星光电技术有限公司 | Gas cooling device and high-temperature operating system |
| CN104235827A (en) * | 2013-06-13 | 2014-12-24 | 烟台龙源电力技术股份有限公司 | Boiler smoke waste heat utilization system |
| CN104857820A (en) * | 2015-05-14 | 2015-08-26 | 广东华信达节能环保有限公司 | Method for eliminating white smoke of condensed flue gas and condenser for same |
| CN108930971A (en) * | 2017-05-24 | 2018-12-04 | 中国科学院广州能源研究所 | A kind of tail gas white-smoke-removing device and method of wet desulphurization, denitration |
-
2011
- 2011-11-10 CN CN2011204427826U patent/CN202315654U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500199A (en) * | 2011-11-10 | 2012-06-20 | 南京圣诺热管有限公司 | Flue gas dehydrating and reheating method and device |
| CN104235827A (en) * | 2013-06-13 | 2014-12-24 | 烟台龙源电力技术股份有限公司 | Boiler smoke waste heat utilization system |
| CN104110969A (en) * | 2014-07-11 | 2014-10-22 | 深圳市华星光电技术有限公司 | Gas cooling device and high-temperature operating system |
| CN104110969B (en) * | 2014-07-11 | 2016-03-30 | 深圳市华星光电技术有限公司 | A kind of gas cooling device and high-temperature operation system |
| CN104857820A (en) * | 2015-05-14 | 2015-08-26 | 广东华信达节能环保有限公司 | Method for eliminating white smoke of condensed flue gas and condenser for same |
| CN108930971A (en) * | 2017-05-24 | 2018-12-04 | 中国科学院广州能源研究所 | A kind of tail gas white-smoke-removing device and method of wet desulphurization, denitration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |