CN210332264U - Desulfurized flue gas white elimination device - Google Patents
Desulfurized flue gas white elimination device Download PDFInfo
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- CN210332264U CN210332264U CN201920976366.0U CN201920976366U CN210332264U CN 210332264 U CN210332264 U CN 210332264U CN 201920976366 U CN201920976366 U CN 201920976366U CN 210332264 U CN210332264 U CN 210332264U
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- flue gas
- desulfurization
- desulfurizing tower
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Abstract
A desulfurized flue gas white elimination device relates to the field of environmental protection. The device of the utility model comprises a desulfurizing tower and a chimney. The structure is characterized in that a slurry cooler, a heat pump system and a flue gas heater are sequentially connected between the desulfurizing tower and the chimney; the slurry cooler is arranged in a desulfurization slurry pool at the bottom of the desulfurization tower. The heat pump system comprises an evaporator, a generator, an absorber and a condenser which are connected in sequence. And conveying the flue gas discharged from the top of the desulfurizing tower to a flue gas heater. Compared with the prior art, the utility model discloses can reduce the flue gas moisture content and improve the fume emission temperature, when eliminating wet plume phenomenon, have with low costs, former system destructive power is little, the efficient characteristics of desulfurization.
Description
Technical Field
The utility model relates to an environmental protection field, especially desulfurization flue gas white device that disappears.
Background
China is a country with large energy consumption, and in an energy structure, coal occupies the main body of energy efficiency consumption of China for a long time. However, the combustion of coal can generate various pollutants such as particulate matters, nitrogen oxides, sulfur oxides and the like, and a large-scale coal-fired facility is mostly provided with various pollutant removal equipment to control the flue gas to reach corresponding emission standards.
The wet desulphurization technology is the mainstream desulphurization technology of the existing large coal-fired boiler and has the characteristics of maturity, reliability and high efficiency. In the wet desulphurization process, the flue gas and the desulphurization slurry are mixed in a desulphurization tower, so that sulfur oxides and the like in the flue gas are absorbed and removed, and simultaneously, a large amount of water vapor generated by heat exchange enters the flue gas. The purified flue gas is in a saturated state, is mixed with ambient air in the discharging process, and the temperature is reduced to condense water vapor, so that wet smoke plume, also called white smoke, is formed near a chimney.
With the increasingly strict environmental protection requirements of China, the requirements of parts of developed areas on the emission of wet smoke plume are gradually raised. In 2016, 1 month, Shanghai released the provincial level local standard of "emission standard of atmospheric pollutants for coal-fired power plants". In 6 months 2017, Shanghai environmental protection agency issued technical requirements (trial) for testing gypsum rain and colored smoke plume of coal-fired power plants in Shanghai. 9 months in 2018, DB 33/2147 promulgated by the government of people in Zhejiang province and 2018 province-level local standard of emission standard of atmospheric pollutants of coal-fired power plants.
In order to solve the wet smoke plume phenomenon, the MGGH technology for treating low-temperature smoke is widely installed and used at present. The technology has the problems of increased flue resistance, serious corrosion of a heat exchanger, larger investment, influence on the thermal efficiency of a boiler and the like, and the development and the improvement of the wet smoke plume elimination technology are necessary.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a desulfurization flue gas whitening device. The method can reduce the moisture content of the flue gas and improve the emission temperature of the flue gas, and has the characteristics of low cost, small destructive power of an original system and high desulfurization efficiency while eliminating the phenomenon of wet smoke plume.
In order to achieve the above object, the technical solution of the present invention is implemented as follows:
a desulfurized flue gas white elimination device comprises a desulfurizing tower and a chimney. The structure is characterized in that a slurry cooler, a heat pump system and a flue gas heater are sequentially connected between the desulfurizing tower and the chimney; the slurry cooler is arranged in a desulfurization slurry pool at the bottom of the desulfurization tower. The heat pump system comprises an evaporator, a generator, an absorber and a condenser which are connected in sequence. And conveying the flue gas discharged from the top of the desulfurizing tower to a flue gas heater.
The utility model discloses owing to adopted above-mentioned structure, it has following advantage and profitable effect to compare with prior art:
1. by using the heat pump technology, the low-temperature waste heat of the original desulfurization system can be effectively utilized, the consumption of high-grade energy is reduced, and the influence on the original boiler thermodynamic system is reduced.
2. The temperature of the desulfurization slurry is reduced, so that the exhaust gas temperature at the outlet of the desulfurization device is reduced, and the content of water vapor in the exhaust gas is reduced; the low-temperature waste heat is transferred to the heated and desulfurized clean flue gas, so that the flue gas temperature is increased, and the phenomenon of wet smoke plume can be further eliminated.
3. The temperature of the desulfurization slurry is reduced, so that the removal of sulfur oxides in the desulfurization tower is facilitated, and the working efficiency of desulfurization equipment is improved.
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Drawings
Fig. 1 is a schematic view of the smoke whitening device of the present invention.
Detailed Description
Referring to fig. 1, the utility model discloses white device is disappears to desulfurization flue gas includes desulfurizing tower 1, thick liquid cooler 3, heat pump system, flue gas heater 4 and chimney 9 that connect gradually. The slurry cooler 3 is arranged in a desulfurization slurry pool 2 at the bottom of the desulfurization tower 1. The heat pump system comprises an evaporator 5, a generator 6, an absorber 7 and a condenser 8 which are connected in sequence. The flue gas discharged from the top of the desulfurizing tower 1 is conveyed to a flue gas heater 4.
The utility model discloses the during operation, the thick liquid in desulfurization thick liquid pond 2 through with the flue gas heat transfer after, contain the low temperature waste heat that can utilize. The slurry cooler 3 reduces the temperature of the desulfurized slurry by absorbing the low-temperature waste heat of the desulfurized slurry; and the heat is carried to the heat pump system to be used as a driving heat source of the evaporator 5 and the generator 6 of the heat pump system to drive the heat pump to work. The heat generated by the absorber 7 and the condenser 8 is sent to the flue gas heater 4 to heat the purified flue gas, so as to increase the emission temperature of the flue gas, and the heated flue gas is discharged through a chimney 9.
The utility model utilizes the heat pump technology and the low-temperature waste heat of the desulfurization system, and reduces the temperature and the water vapor content of the flue gas at the outlet of the desulfurization device by reducing the temperature of the desulfurization slurry; the low-temperature waste heat of the desulfurization slurry is reasonably utilized to heat the purified flue gas, the exhaust temperature is increased, and the aim of eliminating wet smoke plume is fulfilled.
Claims (1)
1. A desulfurized flue gas white elimination device comprises a desulfurizing tower (1) and a chimney (9), and is characterized in that a slurry cooler (3), a heat pump system and a flue gas heater (4) are sequentially connected between the desulfurizing tower (1) and the chimney (9); the slurry cooler (3) is arranged in a desulfurization slurry pool (2) at the bottom of the desulfurization tower (1), and the heat pump system comprises an evaporator (5), a generator (6), an absorber (7) and a condenser (8) which are connected in sequence; and the flue gas discharged from the top of the desulfurizing tower (1) is conveyed to a flue gas heater (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920976366.0U CN210332264U (en) | 2019-06-27 | 2019-06-27 | Desulfurized flue gas white elimination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920976366.0U CN210332264U (en) | 2019-06-27 | 2019-06-27 | Desulfurized flue gas white elimination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210332264U true CN210332264U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920976366.0U Active CN210332264U (en) | 2019-06-27 | 2019-06-27 | Desulfurized flue gas white elimination device |
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| CN (1) | CN210332264U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112138534A (en) * | 2019-06-27 | 2020-12-29 | 同方环境股份有限公司 | Desulfurization flue gas white elimination system |
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2019
- 2019-06-27 CN CN201920976366.0U patent/CN210332264U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112138534A (en) * | 2019-06-27 | 2020-12-29 | 同方环境股份有限公司 | Desulfurization flue gas white elimination system |
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