CN210278746U - High-efficient flue gas white device that disappears - Google Patents
High-efficient flue gas white device that disappears Download PDFInfo
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- CN210278746U CN210278746U CN201920480391.XU CN201920480391U CN210278746U CN 210278746 U CN210278746 U CN 210278746U CN 201920480391 U CN201920480391 U CN 201920480391U CN 210278746 U CN210278746 U CN 210278746U
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Abstract
The utility model relates to a high-efficient flue gas white device that disappears belongs to industrial waste gas treatment environmental protection and energy field. Including a cooling water circulating pump, No. two cooling water circulating pumps, No. three cooling water circulating pumps, moisturizing case, moisturizing pump, No. two moisturizing pumps, cooling tower, condensation heat exchanger, a valve, No. two valves, No. three valves and No. four valves. The condensing heat exchanger is arranged in the slurry tank of the desulfurization system, the temperature of slurry in the slurry tank of the desulfurization system is reduced through dividing wall type heat exchange, and then the temperature of flue gas at the outlet of the desulfurization tower is reduced through the spraying circulation of the slurry circulating pump, so that the effects of condensing, dehumidifying and whitening purified flue gas are achieved. According to the method, the metal material with the grade of 2205 is adopted, the heat exchanger is arranged in a coil pipe manner, the reliability of the system is enhanced, the operation cost is reduced, the condensation temperature of slurry is ensured, and the condensation effect of flue gas at a desulfurization outlet is ensured.
Description
Technical Field
The utility model belongs to industrial waste gas handles environmental protection and energy field, concretely relates to high-efficient flue gas white device that disappears.
Background
Along with the strictness of national environmental protection policies, certain regions put forward the requirements of deep emission reduction and smoke whitening for coal-fired power plants. According to the specific acceptance standard of local environmental protection policy, the flue gas temperature at the inlet of the chimney of the coal-fired power plant needs to be controlled to be about 45 ℃. The temperature of the flue gas of the coal-fired power plant after wet desulphurization is generally between 49 ℃ and 55 ℃, and the flue gas after desulphurization needs to be further condensed and dehumidified and then enters a chimney to be discharged into the atmosphere.
The prior art includes both external condensation and internal condensation.
The cooler is arranged on a clean flue at a desulfurization outlet by condensation outside the tower, and the temperature of the desulfurized flue gas is directly reduced by dividing wall type heat exchange. The technical transformation has the advantages of large engineering quantity, high static engineering investment, more newly-increased smoke resistance and smaller fan allowance, and the fan needs to be transformed.
The cooler is arranged at the outlet main pipe of the slurry circulating pump at the top of the desulfurization layer by condensation in the tower, and cooled slurry is sprayed into the absorption tower to exchange heat with flue gas so as to indirectly reduce the temperature of the flue gas after desulfurization, for example, the Chinese patent with the application number of 201720680534.2. The technology has higher requirement on site arrangement, and after the transformation is completed, the slurry circulating pump corresponding to the heat exchanger needs to be operated for a long time, so that the power consumption of the circulating pump is increased, and if the heat exchanger fails and stops operation, the risk that the temperature of the flue gas exceeds the standard exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a high-efficiency smoke whitening device.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a high-efficient flue gas white device that disappears which characterized in that: including a cooling water circulating pump, No. two cooling water circulating pumps, No. three cooling water circulating pumps, moisturizing case, moisturizing pump, No. two moisturizing pumps, cooling tower, condensation heat exchanger, a valve, No. two valves, No. three valves and No. four valves.
The first cooling water circulating pump, the second cooling water circulating pump and the third cooling water circulating pump are installed in a circulating water pipeline in parallel, outlets of the first cooling water circulating pump, the second cooling water circulating pump and the third cooling water circulating pump are communicated with an inlet of a first valve, an outlet of the first valve is communicated with an inlet of a condensation heat exchanger, an outlet of the condensation heat exchanger is communicated with an inlet of a third valve, an outlet of the third valve is communicated with an inlet of a cooling tower, an outlet of the cooling tower is communicated with an inlet of a water replenishing tank, an outlet of the water replenishing tank is communicated with an inlet of a fourth valve, and an outlet of the fourth valve is communicated with the first cooling water circulating pump, the second cooling water circulating pump and the third cooling water circulating pump to form a closed circulating structure; in addition, the import of a moisturizing pump and No. two moisturizing pumps passes through the pipeline and links to each other with the demineralized water tank, and the export of a moisturizing pump and No. two moisturizing pumps links to each other with the moisturizing tank for provide the moisturizing of high-efficient flue gas and take off white device.
The working principle is as follows: arrange the condensation heat exchanger in coal fired power plant desulfurization system's thick liquid pond, reduce the thick liquid temperature in the desulfurization system thick liquid pond through dividing wall type heat transfer, rethread desulfurization thick liquid spraying system's circulation reduces the desulfurizing tower export flue gas temperature, reaches the effect that pure flue gas condenses the dehumidification white that disappears.
The smoke whitening system comprises a slurry cooling system, a cooling water circulating system, a cooling water supplementing system and a cooling water radiating system; the slurry cooling system: the condensing heat exchanger is made of metal materials with the grade of 2205, and is spirally arranged in a slurry pool of the desulfurization system in a light pipe structure; the cooling water circulation system comprises: constructing circulation of a slurry cooling system and a cooling water radiating system by using demineralized water as a medium through a plurality of circulating water pumps, and determining the number of running water pumps according to the circulating water quantity and the cooling water temperature; the cooling water charging system: the device comprises a water replenishing tank and a water replenishing pump which are used as cooling water buffer and daily water replenishing of a flue gas whitening system; the cooling water heat dissipation system comprises: the cold source can be selected according to the actual situation of the coal-fired power plant, and the cold water tower or the mechanical ventilation cooling tower can be selected as the cold source.
Compared with the prior art, the utility model, have following advantage and effect: the condensing heat exchanger is arranged in the slurry tank of the desulfurization system, so that the system is simplified, and the investment is reduced; the system does not increase the resistance of the fan or the slurry circulating pump, reduces the power consumption of the fan or the slurry circulating pump, reduces the operation cost, and improves the safe and stable operation reliability of the system.
Drawings
Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.
In the figure: no. 1, No. 2, No. 3, the moisturizing case 4, No. 5, No. 6, cooling tower 7, condensation heat exchanger 8, No. 9, No. 10, No. three valves 11, No. four valves 12 of cooling water circulating pump, No. two cooling water circulating pumps.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1, in this embodiment, high-efficient flue gas white device that disappears includes cooling water circulating pump 1, No. two cooling water circulating pumps 2, No. three cooling water circulating pumps 3, moisturizing case 4, No. one moisturizing pump 5, No. two moisturizing pumps 6, cooling tower 7, condensation heat exchanger 8, No. one valve 9, No. two valves 10, No. three valves 11 and No. four valves 12.
The first cooling water circulating pump 1, the second cooling water circulating pump 2 and the third cooling water circulating pump 3 are installed in a circulating water pipeline in parallel, outlets of the first cooling water circulating pump 1, the second cooling water circulating pump 2 and the third cooling water circulating pump 3 are communicated with an inlet of a valve 9, an outlet of the valve 9 is communicated with an inlet of a condensing heat exchanger 8, an outlet of the condensing heat exchanger 8 is communicated with an inlet of a valve 11, an outlet of the valve 11 is communicated with an inlet of a cooling tower 7, an outlet of the cooling tower 7 is communicated with an inlet of a water replenishing tank 4, an outlet of the water replenishing tank 4 is communicated with an inlet of a valve 12, an outlet of the valve 12 is communicated with the first cooling water circulating pump 1, the second cooling water circulating pump 2 and the third cooling water circulating pump 3, and a closed circulating structure is formed; in addition, the import of a moisturizing pump 5 and No. two moisturizing pumps 6 passes through the pipeline and links to each other with the demineralized water tank, and the export of a moisturizing pump 5 and No. two moisturizing pumps 6 links to each other with moisturizing tank 4 for the moisturizing that provides high-efficient flue gas and takes off white device.
The working principle is as follows: arrange condensation heat exchanger 8 in coal fired power plant desulfurization system's thick liquid pond, reduce the thick liquid temperature in the desulfurization system thick liquid pond through dividing wall type heat transfer, rethread desulfurization thick liquid spraying system's circulation reduces the desulfurizing tower export flue gas temperature, reaches the effect that pure flue gas condenses the dehumidification white that disappears.
The smoke whitening system comprises a slurry cooling system, a cooling water circulating system, a cooling water supplementing system and a cooling water radiating system; slurry cooling system: the condensing heat exchanger 8 is made of metal materials with the grade of 2205, and is spirally arranged in a slurry pool of the desulfurization system in a light pipe structure; a cooling water circulation system: constructing circulation of a slurry cooling system and a cooling water radiating system by using demineralized water as a medium through a plurality of circulating water pumps, and determining the number of running water pumps according to the circulating water quantity and the cooling water temperature; cooling water charging system: the system comprises a water replenishing tank 4 and a water replenishing pump which are used as cooling water buffer and daily water replenishing of a flue gas whitening system; cooling water cooling system: the cold source can be selected according to the actual situation of the coal-fired power plant, and the cold water tower or the mechanical ventilation cooling tower can be selected as the cold source.
In this embodiment, the efficient smoke whitening comprises the following steps:
1. introducing the desalted water of the coal-fired power plant into a water replenishing tank 4 and an auxiliary circulating pipeline through a first water replenishing pump 5 and a second water replenishing pump 6 to serve as cooling circulating water;
2. cooling the circulating cooling water to 20 ℃ through a cooling tower 7;
3. the cooling circulating water is sent into a condensation heat exchanger 8 in the slurry tank through a first cooling water circulating pump 1, a second cooling water circulating pump 2 and a third cooling water circulating pump 3, heat exchange is carried out between the cooling circulating water and the slurry through a tubular heat exchanger, the temperature of the cooling circulating water is increased from 20 ℃ to 30 ℃, and the temperature of the slurry is reduced from 50 ℃ to 43 ℃;
4. cooling the cooling circulating water at 30 ℃ in a cooling tower 7, and repeating the process of the step 3 for circulation after cooling to 20 ℃;
5. the slurry at the temperature of 43 ℃ exchanges heat with the flue gas in the desulfurization system through a slurry circulating pump: condensing the flue gas and the slurry after heat exchange until the flue gas meets the requirement; the temperature of the slurry is increased after heat exchange with the flue gas;
6. according to the change of the temperature of the slurry, the opening degrees of the first valve 9, the second valve 10, the third valve 11 and the fourth valve 12 are adjusted, the flow of cooling circulating water is controlled, the heat exchange quantity of the slurry and the circulating cooling water is controlled, and the change of the temperature of the slurry is controlled.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications and alterations made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the scope of the present invention.
Claims (2)
1. The utility model provides a high-efficient flue gas white device that disappears which characterized in that: the system comprises a first cooling water circulating pump (1), a second cooling water circulating pump (2), a third cooling water circulating pump (3), a water replenishing tank (4), a first water replenishing pump (5), a second water replenishing pump (6), a cooling tower (7), a condensing heat exchanger (8), a first valve (9), a second valve (10), a third valve (11) and a fourth valve (12); a cooling water circulating pump (1), No. two cooling water circulating pumps (2) and No. three cooling water circulating pumps (3) are installed in circulating water pipeline in parallel, and the export of a cooling water circulating pump (1), No. two cooling water circulating pumps (2) and No. three cooling water circulating pumps (3) all is linked together with the import of a valve (9), the export of a valve (9) is linked together with the import of condensation heat exchanger (8), the export of condensation heat exchanger (8) is linked together with the import of No. three valve (11), the export of No. three valve (11) is linked together with the import of cooling tower (7), the export of cooling tower (7) is linked together with the import of moisturizing case (4), the export of moisturizing case (4) is linked together with the import of No. four valve (12), the export of No. four valve (12) and a cooling water circulating pump (1), The second cooling water circulating pump (2) and the third cooling water circulating pump (3) are communicated to form a closed circulating structure; in addition, the import of a moisturizing pump (5) and No. two moisturizing pumps (6) passes through the pipeline and links to each other with desalting water tank, and the export of a moisturizing pump (5) and No. two moisturizing pumps (6) links to each other with moisturizing tank (4) for provide the moisturizing of high-efficient flue gas white removal device.
2. The high-efficiency smoke whitening device according to claim 1, characterized in that: the condensing heat exchanger (8) is made of metal materials with the grade of 2205, and is spirally arranged in a slurry pool of a desulfurization system of a coal-fired power plant in a light pipe structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920480391.XU CN210278746U (en) | 2019-04-10 | 2019-04-10 | High-efficient flue gas white device that disappears |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920480391.XU CN210278746U (en) | 2019-04-10 | 2019-04-10 | High-efficient flue gas white device that disappears |
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| CN210278746U true CN210278746U (en) | 2020-04-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235694A (en) * | 2021-04-26 | 2021-08-10 | 西安西热节能技术有限公司 | Arrange flue gas water intaking device in wet flue gas desulfurization tower export flue |
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2019
- 2019-04-10 CN CN201920480391.XU patent/CN210278746U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235694A (en) * | 2021-04-26 | 2021-08-10 | 西安西热节能技术有限公司 | Arrange flue gas water intaking device in wet flue gas desulfurization tower export flue |
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