CN213668691U - A high-efficient desulfurization absorption tower for industrial flue gas - Google Patents
A high-efficient desulfurization absorption tower for industrial flue gas Download PDFInfo
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- CN213668691U CN213668691U CN202022437823.4U CN202022437823U CN213668691U CN 213668691 U CN213668691 U CN 213668691U CN 202022437823 U CN202022437823 U CN 202022437823U CN 213668691 U CN213668691 U CN 213668691U
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Abstract
The utility model discloses a high-efficient desulfurization absorption tower for industrial flue gas, including desulfurization absorption tower body, the middle part of desulfurization absorption tower body is provided with the flue gas import, the top of desulfurization absorption tower body is provided with direct vent chimney, the lower part of direct vent chimney is located this internal second grade defroster that has set gradually from top to bottom of desulfurization absorption tower, the one-level defroster, the second grade shower, the one-level shower, the upper portion of defroster all is provided with the upper portion flushing line, the defroster lower part all is provided with the lower part flushing line, the shower circulating pipe is connected and is provided with the circulating pump, the bottom of circulating pipe and the bottom intercommunication of desulfurization absorption tower body, flue gas import and flue gas pipe connection, be provided with the draught fan on the flue gas pipe, the inside shower that is provided with of flue gas import, the inside lower part that is located flue. The device has the advantages of advanced integral technology, reliable equipment operation, small resistance, simple and convenient operation and maintenance, and is a practical and effective flue gas treatment process.
Description
Technical Field
The utility model relates to a flue gas desulfurization technical field, concretely relates to a high-efficient desulfurization absorption tower for industrial flue gas.
Background
China is one of the largest coal producing and consuming countries in the world, and the proportion of coal in an energy structure is as high as about 80%. At present, a large amount of sulfur dioxide, carbon monoxide, dust and smoke dust are generated in the process of producing silicon carbide, SO SO2 in flue gas in the process of producing silicon carbide is a main SO2 pollution source, and the treatment of SO2 in coal-fired flue gas is mainly wet flue gas desulfurization. In the wet desulphurization, the absorption tower is the main equipment for carrying out the flue gas desulphurization and is also the key equipment. For the absorption tower, how to deal with the change of the flue gas volume caused by the load change is very important, because the change of the flue gas volume directly causes the change of the flow velocity in the tower, and a plurality of parameters such as the desulfurization efficiency, the water flushing volume of the demister and the like are influenced. Meanwhile, in the process of treating SO2, a large amount of dust and smoke dust contained in the flue gas can also corrode and block the demisting system and the spraying system, SO that the structures of the demisting system and the spraying system are also considered in the design of the desulfurization absorption tower, and the working efficiency of the whole desulfurization absorption tower is improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that prior art exists, a high-efficient desulfurization absorption tower for industrial flue gas is provided, through being connected of automatic control system and flush fluid governing valve, one-level circulating pump, secondary circulating pump, draught fan, last water control valve, blowoff valve when it is used, can adjust the flue gas velocity of flow in the tower, what of the volume that sprays of absorption liquid, improve desulfurization efficiency, guarantee dust removal effect to reduce the consumption of defroster sparge water and absorption liquid generally.
The utility model discloses a following technical scheme realizes:
a high-efficiency desulfurization absorption tower for industrial flue gas comprises a desulfurization absorption tower body, wherein a flue gas inlet is formed in the middle of the desulfurization absorption tower body, a direct exhaust chimney is arranged at the top of the desulfurization absorption tower body, the lower part of the direct exhaust chimney is positioned in the desulfurization absorption tower body, and a second-stage demister, a first-stage demister, a second-stage spray pipe and a first-stage spray pipe are sequentially arranged from top to bottom, the upper parts of the second-stage demister and the first-stage demister are respectively provided with an upper washing pipeline, the lower parts of the second-stage demister and the first-stage demister are respectively provided with a lower washing pipeline, the upper washing pipeline and the lower washing pipeline are connected with a washing liquid inlet pipe, the upper washing pipeline and the lower washing pipeline are respectively provided with a washing liquid regulating valve, the first-stage spray pipe is connected, the bottom of one-level circulating pipe and the bottom intercommunication of desulfurization absorption tower body, the second grade shower is connected with the second grade circulating pipe, be provided with the second grade circulating pump on the second grade circulating pipe, the bottom of second grade circulating pipe and the bottom intercommunication of desulfurization absorption tower body, flue gas inlet and flue gas pipeline are connected, the last draught fan that is provided with of flue gas pipeline, the inside shower that is provided with of flue gas inlet, be connected with the upper hose on the shower, be provided with water-supply control valve on the upper hose, the inside lower part that is located flue gas inlet of desulfurization absorption tower body is provided with the absorption liquid, the bottom of desulfurization absorption tower body is provided with the blowoff valve.
Further, a high-efficient desulfurization absorption tower for industrial flue gas, be provided with high-pressure cleaning shower nozzle on upper portion washout duct, the lower part washout duct.
Further, a high-efficient desulfurization absorption tower for industrial flue gas, all be provided with high-pressure vaporific shower nozzle on one-level shower, second grade shower, the shower.
Further, a high-efficient desulfurization absorption tower for industrial flue gas, the gas inlet sets up to the horn mouth, is close to the inside expansion one side that is the horn mouth of desulfurization absorption tower body, the gas inlet is provided with the angle of downward sloping, the angle of slope sets up to: between 10 and 15 degrees.
Further, a high-efficient desulfurization absorption tower for industrial flue gas, be provided with the defogging blade on one-level defroster, the second grade defroster.
Further, a high-efficient desulfurization absorption tower for industrial flue gas, be provided with automatic control system on the desulfurization absorption tower body, automatic control system is connected with flush fluid governing valve, one-level circulating pump, second grade circulating pump, draught fan, water control valve, blowoff valve electricity, and automatic control system controls the switch and the opening and the stop of flush fluid governing valve, one-level circulating pump, second grade circulating pump, draught fan, water control valve, blowoff valve.
Further, a high-efficient desulfurization absorption tower for industrial flue gas, this internal inside that is located the absorption liquid of desulfurization absorption tower is provided with liquid concentration detector.
Further, a high-efficient desulfurization absorption tower for industrial flue gas, the material of desulfurization absorption tower originally from inside to outside sets gradually to granite, acidproof clay, carbon steel.
At present, can produce a large amount of sulfur dioxide at the in-process of production carborundum, carbon monoxide, the dust, the smoke and dust, how can the efficient get rid of harmful substance be the difficult problem that needs to solve at present, so this application provides a high-efficient desulfurization absorption tower for industrial flue gas, including desulfurization absorption tower body, the middle part of desulfurization absorption tower body is provided with the flue gas import, the top of desulfurization absorption tower body is provided with direct vent chimney, the lower part of direct vent chimney is located desulfurization absorption tower body and has set gradually the second grade defroster from top to bottom, the one-level defroster, the second grade shower, the one-level shower, the second grade flushing fluid, the upper portion of one-level defroster all is provided with the upper portion and washes the pipeline, the lower part of second grade defroster, the lower part of one-level defroster all is provided with the lower part and washes the pipeline, All be provided with the flush fluid governing valve on the lower part flushing pipe, the one-level shower is connected with the one-level circulating pipe, be provided with the one-level circulating pump on the one-level circulating pipe, the bottom of one-level circulating pipe and the bottom intercommunication of desulfurization absorption tower body, the second grade shower is connected with the second grade circulating pipe, be provided with the second grade circulating pump on the second grade circulating pipe, the bottom of second grade circulating pipe and the bottom intercommunication of desulfurization absorption tower body, flue gas inlet and flue gas piping connection, be provided with the draught fan on the flue gas pipeline, the inside shower that is provided with of flue gas inlet, be connected with the water pipe on the shower, be provided with water control valve on the water pipe, the inside lower part that is located flue gas inlet of desulfurization. In the absorption process, under the action of high-temperature and high-speed flowing flue gas, complex physical and chemical reactions are formed on the surface of slurry from top to bottom, on one hand, water on the surface of the slurry absorbs SO2 in the flue gas and generates an outside-in diffusion process in slurry particles, and a concentration gradient of SO2 is formed in the slurry particles; on the other hand, the moisture on the surface of the slurry gradually evaporates, the surface moisture gradually decreases, and the moisture diffuses from the inside of the slurry to the surface. During the absorption of the slurry droplets, evaporation, the moisture content on the surface gradually decreases and the concentration of SO2 on the surface gradually increases, SO that during the descent of the droplets, the slurry droplets gradually saturate during evaporation and absorption, and the absorption process tends to stop. And in the descending process of the liquid drops, the liquid drops collide with each other, so that the small liquid drops are changed into large liquid drops, and the surface area of the absorbent is reduced. The combined result of these processes is that the absorption rate gradually slows down as the droplets fall away from the head. The demister is used for separating liquid drops carried by flue gas and is provided with a washing water system and a spraying system (comprising a pipeline, a valve, a nozzle and the like). The demister system comprises a coarse demister arranged at the lower part and two fine demisters arranged at the upper part. The first stage demister located below is a large liquid droplet separator, and the blade gap is slightly larger and is used for separating larger liquid droplets carried by the rising flue gas. The second demister above is a fine liquid droplet separator, the distance between the blades is small, and the fine liquid droplet separator is used for separating fine slurry liquid droplets in rising flue gas and washing water droplets of the demister. When the flue gas flows through the demister, liquid drops are left on the baffle due to the inertia effect. Because the retained liquid drops also contain solid substances, the risk of scaling on the baffle exists, and meanwhile, in order to ensure that the pressure drop generated when the flue gas passes through the demister does not exceed a set value, the online cleaning is required to be carried out regularly. For this purpose, periodically operated cleaning devices are provided, including nozzle systems. The flushing medium is industrial water.
To sum up, the utility model discloses a following beneficial effect:
1. the utility model relates to a high-efficient desulfurization absorption tower for industrial flue gas, this desulfurization absorption tower are provided with automatic control system, through the connection of automatic control system and flush fluid governing valve, one-level circulating pump, second grade circulating pump, draught fan, water feeding control valve, blowoff valve, can adjust the flue gas velocity in the tower, what of the volume that sprays of absorption liquid, improve desulfurization efficiency, guarantee dust removal effect to reduce the consumption of defroster sparge water and absorption liquid in general.
2. The utility model relates to a high-efficient desulfurization absorption tower for industrial flue gas, the abundant reduction working costs of this set of device, the desulfurizer source is reliable, and the by-product is dealt with rationally, does not arrange outward and does not produce secondary pollution, desulfurization water cyclic utilization, complete equipment economy is reasonable
3. The utility model relates to a high-efficient desulfurization absorption tower for industrial flue gas, the device holistic technique is advanced, equipment operation is reliable, the resistance is little, the operation is easy and simple to handle, the maintenance is convenient, the technology is administered to the conscientious effectual flue gas.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Reference numbers and corresponding part names in the drawings:
1-a desulfurization absorption tower body, 2-a straight-line chimney, 3-a first-stage demister, 4-a second-stage demister, 5-an upper-part flushing pipeline, 6-a lower-part flushing pipeline, 7-a flushing liquid inlet pipe, 8-a flushing liquid regulating valve, 9-a first-stage spraying pipe, 10-a second-stage spraying pipe, 11-a first-stage circulating pipe, 12-a second-stage circulating pipe, 13-a first-stage circulating pump, 14-a second-stage circulating pump, 15-a flue gas inlet, 16-a flue gas pipeline, 17-an induced draft fan, 18-a spraying pipe, 19-a water feeding pipe, 20-a water feeding control valve, 21-absorption liquid and 22-a.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Examples
As shown in figure 1, a high-efficiency desulfurization absorption tower for industrial flue gas comprises a desulfurization absorption tower body 1, a flue gas inlet 15 is arranged at the middle part of the desulfurization absorption tower body 1, a direct exhaust chimney 2 is arranged at the top part of the desulfurization absorption tower body 1, a second-stage demister 4, a first-stage demister 3, a second-stage spray pipe 10 and a first-stage spray pipe 9 are sequentially arranged at the lower part of the direct exhaust chimney 2 in the desulfurization absorption tower body 1 from top to bottom, upper flushing pipes 5 are arranged at the upper parts of the second-stage demister 4 and the first-stage demister 3, lower flushing pipes 6 are arranged at the lower parts of the second-stage demister 4 and the first-stage demister 3, the upper flushing pipe 5 and the lower flushing pipe 6 are connected with a flushing fluid inlet pipe 7, regulating valves 8 are arranged on the upper flushing pipe 5 and the lower flushing pipe 6, and the first-stage spray pipe 9 is connected with a, be provided with one-level circulating pump 13 on the one-level circulating pipe 11, the bottom of one-level circulating pipe 11 and desulfurization absorption tower body 1's bottom intercommunication, second grade shower 10 is connected with second grade circulating pipe 12, be provided with second grade circulating pump 14 on the second grade circulating pipe 12, the bottom of second grade circulating pipe 12 and desulfurization absorption tower body 1's bottom intercommunication, flue gas inlet 15 is connected with flue gas pipeline 16, be provided with draught fan 17 on the flue gas pipeline 16, the inside shower 18 that is provided with of flue gas inlet 15, be connected with water-supply pipe 19 on the shower 18, be provided with water-supply control valve 20 on the water-supply pipe 19, the inside lower part that is located flue gas inlet 15 of desulfurization absorption tower body 1 is provided with absorption liquid 21, the bottom of desulfurization absorption tower body 1 is provided with blowoff valve 22.
Specifically, the upper flushing pipeline 5 and the lower flushing pipeline 6 are provided with high-pressure cleaning nozzles.
Specifically, the first-stage spray pipe 9, the second-stage spray pipe 10 and the spray pipe 18 are all provided with high-pressure mist spray heads.
Specifically, flue gas inlet 15 sets up to the horn mouth, is close to the inside expansion one side that is the horn mouth of desulfurization absorption tower body 1, flue gas inlet 15 is provided with the angle of downward sloping, the angle of slope sets up to: between 10 and 15 degrees.
Specifically, the first-stage demister 3 and the second-stage demister 4 are provided with demisting blades.
Specifically, be provided with automatic control system on the desulfurization absorption tower body 1, automatic control system is connected with flush fluid governing valve 8, one-level circulating pump 13, second grade circulating pump 14, draught fan 17, water control valve 20, blowoff valve 22 electricity, and automatic control system controls the switch and the start-stop of flush fluid governing valve 8, one-level circulating pump 13, second grade circulating pump 14, draught fan 17, water control valve 20, blowoff valve 22.
Specifically, a liquid concentration detector is arranged inside the absorption liquid 21 in the desulfurization absorption tower body 1.
Specifically, the desulfurization absorption tower body 1 is sequentially provided with granite, acid-resistant daub and carbon steel from inside to outside.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a high-efficient desulfurization absorption tower for industrial flue gas, its characterized in that, includes desulfurization absorption tower body (1), the middle part of desulfurization absorption tower body (1) is provided with flue gas inlet (15), the top of desulfurization absorption tower body (1) is provided with direct vent chimney (2), the lower part of direct vent chimney (2) is located desulfurization absorption tower body (1) and has set gradually second grade defroster (4), one-level defroster (3), second grade shower (10), one-level shower (9) from top to bottom, the upper portion of second grade defroster (4), one-level defroster (3) all is provided with upper portion flushing pipe (5), the lower part of second grade defroster (4), one-level defroster (3) all is provided with lower part flushing pipe (6), upper portion flushing pipe (5), lower part flushing pipe (6) are connected with flush fluid feed liquor pipe (7), all be provided with flush fluid governing valve (8) on upper portion washing pipeline (5), lower part washing pipeline (6), one-level shower (9) are connected with one-level circulating pipe (11), be provided with one-level circulating pump (13) on one-level circulating pipe (11), the bottom of one-level circulating pipe (11) and the bottom intercommunication of desulfurization absorption tower body (1), second grade shower (10) are connected with second grade circulating pipe (12), be provided with second grade circulating pump (14) on second grade circulating pipe (12), the bottom of second grade circulating pipe (12) and the bottom intercommunication of desulfurization absorption tower body (1), flue gas inlet (15) are connected with flue gas pipeline (16), be provided with draught fan (17) on flue gas pipeline (16), flue gas inlet (15) inside is provided with shower (18), be connected with water feeding pipe (19) on shower (18), the device is characterized in that an upper water control valve (20) is arranged on the upper water pipe (19), absorption liquid (21) is arranged on the lower portion, located at the flue gas inlet (15), of the inside of the desulfurization absorption tower body (1), and a blow-down valve (22) is arranged at the bottom of the desulfurization absorption tower body (1).
2. The tower of claim 1, wherein the upper washing pipe (5) and the lower washing pipe (6) are provided with high pressure cleaning nozzles.
3. The tower of claim 1, wherein the primary spray pipe (9), the secondary spray pipe (10) and the spray pipe (18) are provided with high pressure mist spray nozzles.
4. The high-efficiency desulfurization absorption tower for industrial flue gas according to claim 1, wherein the flue gas inlet (15) is arranged as a bell mouth, the enlarged side of the bell mouth is close to the inside of the desulfurization absorption tower body (1), the flue gas inlet (15) is provided with a downward inclined angle, and the inclined angle is arranged as follows: between 10 and 15 degrees.
5. The tower of claim 1, wherein the first-stage demister (3) and the second-stage demister (4) are provided with demisting blades.
6. The efficient desulfurization absorption tower for industrial flue gas according to claim 1, wherein an automatic control system is arranged on the desulfurization absorption tower body (1), the automatic control system is electrically connected with the flushing liquid regulating valve (8), the primary circulating pump (13), the secondary circulating pump (14), the induced draft fan (17), the water supply control valve (20) and the blowdown valve (22), and the automatic control system controls the on-off and on-off of the flushing liquid regulating valve (8), the primary circulating pump (13), the secondary circulating pump (14), the induced draft fan (17), the water supply control valve (20) and the blowdown valve (22).
7. The high-efficiency desulfurization absorption tower for industrial flue gas according to claim 1, characterized in that a liquid concentration detector is arranged inside the absorption liquid (21) in the desulfurization absorption tower body (1).
8. The high-efficiency desulfurization absorption tower for industrial flue gas according to claim 1, wherein the desulfurization absorption tower body (1) is made of granite, acid-resistant daub and carbon steel from inside to outside in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022437823.4U CN213668691U (en) | 2020-10-28 | 2020-10-28 | A high-efficient desulfurization absorption tower for industrial flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022437823.4U CN213668691U (en) | 2020-10-28 | 2020-10-28 | A high-efficient desulfurization absorption tower for industrial flue gas |
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| CN213668691U true CN213668691U (en) | 2021-07-13 |
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| CN202022437823.4U Active CN213668691U (en) | 2020-10-28 | 2020-10-28 | A high-efficient desulfurization absorption tower for industrial flue gas |
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