CN210874732U - Flue gas deep cooling, condensation remove white system in coordination - Google Patents
Flue gas deep cooling, condensation remove white system in coordination Download PDFInfo
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- CN210874732U CN210874732U CN201920761891.0U CN201920761891U CN210874732U CN 210874732 U CN210874732 U CN 210874732U CN 201920761891 U CN201920761891 U CN 201920761891U CN 210874732 U CN210874732 U CN 210874732U
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Abstract
The utility model discloses a flue gas degree of depth cooling, condensation are white system in coordination, including dust remover, draught fan, desulfurizing tower, chimney, set up degree of depth cooler and flue gas condenser respectively around the desulfurizing tower, degree of depth cooler sets up between draught fan and desulfurizing tower entry, and flue gas condenser sets up between desulfurizing tower export and chimney. The utility model reduces the water content of the flue gas outlet through multi-stage cooling and condensation by deep cooling of the flue gas in front of the desulfurizing tower and flue gas condensation behind the desulfurizing tower, thereby achieving the purposes of saving water and whitening; meanwhile, the flue gas condensed liquid is used for carrying out secondary washing on the desulfurized flue gas, so that the dust emission can be effectively reduced.
Description
Technical Field
The utility model relates to a technical field is administered to the flue gas, concretely relates to flue gas deep cooling, condensation take off white system in coordination.
Background
And for the wet desulphurization system, the temperature of the flue gas outlet is supersaturated wet flue gas, the temperature of the flue gas is 50-55 ℃, and a large amount of water vapor is carried, so that the desulphurization system needs to supplement a large amount of water. Meanwhile, as the smoke carries a large amount of water vapor, white rain is generated after the smoke is discharged into the atmosphere from the chimney and is cooled.
The current mainstream wet smoke plume treatment technology comprises a smoke reheating technology and a smoke condensing technology. The pure flue gas reheating needs to consume a large amount of heat, does not really reduce the water content in the flue gas, has a common effect of removing the smoke and rain, and is more used as a supplementary means. Such as rotary GGH, tubular GGH, MGGH, heat pipe heat exchanger, steam heat exchanger, etc.; the flue gas condensation technology achieves the aim of removing white by installing a flue gas condensation heat exchanger after desulfurization to reduce the temperature of flue gas and remove water, and has large equipment and high investment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flue gas degree of depth cooling, condensation take off white system in coordination.
Realize the utility model discloses the technical solution of purpose does: the utility model provides a flue gas degree of depth cooling, condensation are white system in coordination, includes dust remover, draught fan, desulfurizing tower, chimney, sets up degree of depth cooler and flue gas condenser around the desulfurizing tower respectively, and degree of depth cooler sets up between draught fan and desulfurizing tower entry, and flue gas condenser sets up between desulfurizing tower export and chimney.
Compared with the prior art, the utility model discloses a show the advantage and do: the flue gas deep cooling and condensation cooperative de-whitening system of the utility model reduces the water content of the flue gas outlet through deep cooling and cooling of the flue gas in front of the desulfurizing tower and flue gas condensation behind the desulfurizing tower, and achieves the purposes of saving water and de-whitening; meanwhile, the flue gas condensed liquid is used for carrying out secondary washing on the desulfurized flue gas, so that the dust emission can be effectively reduced.
Drawings
Fig. 1 is the schematic diagram of the system for deep cooling and condensation of flue gas and cooperative whitening.
Detailed Description
As shown in figure 1, a flue gas deep cooling, condensation are white system in coordination, including dust remover 2, draught fan 3, desulfurizing tower 5, chimney 7, set up deep cooler 4 and flue gas condenser 6 around the desulfurizing tower 5 respectively, and deep cooler 4 sets up between draught fan 3 and desulfurizing tower entry, and flue gas condenser 6 sets up between desulfurizing tower 5 export and chimney 7.
The deep cooler 4 and the flue gas condenser 6 are cooled by low-temperature condensate water, and the temperature of the low-temperature condensate water is 0-35 ℃. The deep cooler 4 and the flue gas condenser 6 share a set of condensed water inlet and outlet pipelines 10 and 11, and are controlled to be switched on and off through valves.
The deep cooler 4 is an indirect heat exchanger, cooling water is not in direct contact with the flue gas, and the temperature of the flue gas is adjusted and controlled according to a deep cooler valve 8.
The rear end of the flue gas condenser 6 is provided with a heating and warming device. The outlet temperature of the flue gas condenser 6 is 30-45 ℃, and the regulation and control are carried out according to a flue gas condenser valve 9.
The deep cooler 4 and the flue gas condenser 6 are made of stainless steel, fluoroplastic or enamel pipes.
The present invention will be described in detail with reference to the following examples.
Examples
The utility model discloses a flue gas degree of depth cooling, condensation in coordination take off white system and are applicable to 1 flue gas of boiler and take off white improvement, as shown in fig. 1, 1 flue gas of boiler gets into the afterbody flue after the burning heat transfer, through dust remover 2, draught fan 3 in proper order, then get into desulfurizing tower 5 and carry out the flue gas purification and handle the back and emit into chimney 7. The deep cooler 4 of the flue gas in front of the desulfurizing tower and the flue gas condenser 6 behind the desulfurizing tower are used for deep cooling and condensation in a synergistic manner to reduce the temperature and the water content of the flue gas, so that the aims of saving energy, saving water and whitening are fulfilled; meanwhile, the flue gas condensed liquid is used for carrying out secondary washing on the desulfurized flue gas, so that the dust emission can be effectively reduced.
The deep cooler 4 and the flue gas condenser 6 behind the desulfurizing tower are sequentially arranged in series for cooperative treatment; the circulating cooling water is connected in parallel to supply water, so that the heat exchange temperature difference in the deep cooler 4 is improved, the heat exchange effect is enhanced, and the cost is reduced. And discharging the cooling return water after heat exchange into a return water main pipe for heat energy recovery.
The flue gas deep cooler and the condenser are simultaneously cooled by low-temperature condensate water, and the temperature of the low-temperature condensate water is in the range of 0-35 ℃.
The deep cooler 4 is arranged in the middle of a flue at the inlet of the desulfurization tower behind the induced draft fan, the flue behind the outlet of the induced draft fan is reduced to 60-90 ℃ from 100-130 ℃, the deep cooler 4 is an indirect heat exchanger, cooling water is not in direct contact with flue gas, and the temperature of the flue gas behind the deep cooler 4 is adjusted and controlled according to a valve 8 of the deep cooler, so that the temperature and the water content of clean flue gas at the desulfurization outlet can be reduced, and the cooling processing load of a rear flue gas condenser is reduced. Because the flue gas temperature is lower after the desulfurization outlet, the heat exchange of the flue gas condenser 6 is more economical and convenient than that of the deep cooler 4 under the condition of the same energy heat exchange quantity.
The temperature of the outlet of the flue gas condenser 6 is reduced to 30-45 ℃, and the regulation and control are carried out according to the flue gas condenser valve 9. A flue gas heating device can be added behind the flue gas condenser 6 according to the situation to raise the smoke exhaust temperature of the chimney 7.
The flue gas deep cooler and the condenser adopt corrosion-resistant, wear-resistant and anti-blocking designs, and the materials can be corrosion-resistant stainless steel, fluoroplastic or enamel pipes.
The utility model discloses set up degree of depth cooling and condensation heat exchanger around wet flue gas desulfurization tower and make desulfurization exit temperature 30 ~ 45 ℃, carry out degree of depth dewatering. Deep cooling device and flue gas condenser before the desulfurizing tower entry are a cooling in coordination, condensation cooling and take off white system, and the temperature that the flue gas deep cooling device accessible was adjusted and is got into the desulfurizing tower flue gas reduces desulfurizing tower outlet temperature.
Claims (3)
1. A flue gas deep cooling and condensation collaborative de-whitening system comprises a dust remover (2), an induced draft fan (3), a desulfurizing tower (5) and a chimney (7), and is characterized in that a deep cooler (4) and a flue gas condenser (6) are respectively arranged at the front and the back of the desulfurizing tower (5), the deep cooler (4) is arranged between the induced draft fan (3) and an inlet of the desulfurizing tower, and the flue gas condenser (6) is arranged between an outlet of the desulfurizing tower and the chimney (7);
the deep cooler (4) and the flue gas condenser (6) are cooled by low-temperature condensed water, and the temperature of the low-temperature condensed water is 0-35 ℃;
the deep cooler (4) and the flue gas condenser (6) share a set of condensed water inlet and outlet pipelines and are controlled to be switched on and off through a valve;
the deep cooler (4) is an indirect heat exchanger, cooling water is not in direct contact with the flue gas, and the temperature of the flue gas is regulated and controlled according to a deep cooler valve (8);
the rear end of the flue gas condenser (6) is provided with a heating and warming device.
2. The deep cooling and condensation cooperative de-whitening system for flue gas as claimed in claim 1, wherein the outlet temperature of the flue gas condenser (6) is 30-45 ℃, and is adjusted by a flue gas condenser valve (9).
3. The deep cooling and condensation cooperative de-whitening system for flue gas as claimed in claim 1, wherein the deep cooler (4) and the flue gas condenser (6) are made of stainless steel, fluoroplastic or enamel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920761891.0U CN210874732U (en) | 2019-05-24 | 2019-05-24 | Flue gas deep cooling, condensation remove white system in coordination |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920761891.0U CN210874732U (en) | 2019-05-24 | 2019-05-24 | Flue gas deep cooling, condensation remove white system in coordination |
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| CN210874732U true CN210874732U (en) | 2020-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141942A (en) * | 2019-05-24 | 2019-08-20 | 南京晨光集团有限责任公司 | A kind of flue gas depth is cooling, condensation collaboration takes off white system |
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2019
- 2019-05-24 CN CN201920761891.0U patent/CN210874732U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141942A (en) * | 2019-05-24 | 2019-08-20 | 南京晨光集团有限责任公司 | A kind of flue gas depth is cooling, condensation collaboration takes off white system |
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