CN213408222U - Integrated efficient desulfurization and water removal device - Google Patents
Integrated efficient desulfurization and water removal device Download PDFInfo
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- CN213408222U CN213408222U CN202021921660.0U CN202021921660U CN213408222U CN 213408222 U CN213408222 U CN 213408222U CN 202021921660 U CN202021921660 U CN 202021921660U CN 213408222 U CN213408222 U CN 213408222U
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- alkali liquor
- alkali
- desulfurization
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Abstract
The utility model discloses a high-efficient desulfurization water trap of integral type, it includes desulfurization water trap system, alkali lye control system, SO2A concentration regulation control system, wherein the desulfurization and water removal system comprises an alkali liquor-containing buffer tank, a desulfurization tower and a coolerThe alkali liquor control system comprises an alkali liquor circulating pump, a liquid level control valve and a water-alkali mixer for realizing the cyclic utilization and discharge of alkali liquor, and the SO2The concentration regulation control system comprises an SO installed at the outlet of a chimney of a combustion furnace2Concentration detector and variable frequency pump capable of automatically adjusting and controlling flue gas SO2The concentration of (c). The utility model discloses a structure of desulfurization dewatering set formula as an organic whole has greatly reduced area and purified gas moisture content to adopt DCS control system regulation and control alkali lye liquid level and flue gas SO2Concentration, realizes automatic control operation of gas desulfurization, reduces labor intensity and controls SO2The concentration is less than or equal to 50mg/m3And meets the environmental protection standard.
Description
Technical Field
The utility model relates to a fuel gas handles technical field, especially relates to a high-efficient desulfurization water trap of integral type.
Background
Fuel gases such as biogas, coal gas and refinery gas can generate hydrogen sulfide with high concentration in the production process. Hydrogen sulfide is an acidic gas and can cause pollution, corrosion and other hazards to the environment, equipment, pipelines, instruments and the like. At present, the treatment capacity of fuel gas is less than or equal to 1500m3In the condition of/h and continuous treatment, the hydrogen sulfide in the fuel gas is usually removed by adopting a wet desulphurization process. The process principle of wet desulphurization is as follows: and the gas enters the desulfurizing tower, flows upwards through the packing layer, is in reverse contact with the downward flowing absorption liquid, escapes from the top of the tower after being contacted, and enters the next step for water removal. The absorption liquid which absorbs the hydrogen sulfide flows out from the bottom of the tower and automatically flows to the buffer tank, the circulating liquid is mixed with fresh alkali liquor through the circulating pump and then sent back to the desulfurizing tower for recycling, and meanwhile, a part of circulating liquid is discharged, so that balance of inlet and outlet liquid is realized.
In the desulfurization process, the main related equipment has equipment such as desulfurizing tower, buffer tank, alkali lye circulating pump and delivery pump, and these equipment area is big, extravagant space, and the purified gas water content that comes out from the desulfurizing tower top increases, is unfavorable for the burning, need add the cooler before the burning and further remove water to the purified gas. In addition, when the hydrogen sulfide content of the fuel gas is increased, the desulfurization process needs to manually adjust the flow of the fresh alkali liquor, so that the desulfurization effect of the desulfurization tower is increased, the requirement of environment-friendly emission after the purified gas is combusted is met, and the operation labor intensity is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high-efficient desulfurization water trap of integral type reduces equipment area to realize the gas desulfurization automatic control operation.
The utility model discloses a realize through following technical scheme:
an integrated high-efficiency desulfurization and dehydration device comprises a desulfurization and dehydration system, an alkali liquor control system and SO2The concentration regulation and control system comprises a desulfurization tower, an alkali liquor buffer tank and a cooler, wherein the desulfurization and water removal system comprises the desulfurization tower, the alkali liquor buffer tank and the cooler, and the alkali liquor buffer tank, the desulfurization tower and the cooler are sequentially connected from top to bottom to form integrated equipment; the alkali liquor control system comprises an alkali liquor circulating pump, a liquid level control valve and a water-alkali mixer, the alkali liquor circulating pump is connected below the alkali liquor buffer tank through a pipeline, the liquid level control valve is installed on the side wall of the alkali liquor buffer tank, one end of the water-alkali mixer is connected with the desulfurizing tower through a pipeline, and the other end of the water-alkali mixer is connected with the alkali liquor circulating pump through a pipeline; the SO2The concentration regulation control system is connected with the water-alkali mixer through a pipeline according to the SO at the outlet of a combustion furnace chimney2Adjusting the addition amount of the alkali liquor.
Compared with the prior art, the utility model discloses following technological effect has:
the utility model provides an integrated high-efficiency desulfurization and water removal device, which develops and designs equipment such as a desulfurizing tower, a buffer tank, a cooler and the like into integrated equipment, greatly reduces the occupied area, and effectively reduces the water content of purified gas; additionally provided with an alkali liquor control system and SO2The concentration adjusting and controlling system can convey the circulating alkali liquor which flows back into the alkali liquor buffer tank into the desulfurizing tower again through the alkali liquor controlling system, so that the alkali liquor can be recycled; in SO2SO in the operation process of the concentration regulation control system2The concentration detector detects the concentration of sulfur dioxide in the flue gas discharged from the chimney of the combustion furnace, and the sulfur dioxide passes throughThe control system feeds back a signal to the variable frequency pump, and the variable frequency pump automatically adjusts the addition of the fresh alkali liquor according to the concentration of sulfur dioxide, so that the processing capacity of the desulfurizing tower is increased, and the automatic control operation of gas desulfurization is realized.
Further, the SO2The concentration regulation control system comprises SO2Concentration detector and inverter pump, inverter pump with the water alkali blender passes through the pipe connection, SO2The concentration detector is arranged at the outlet of the chimney of the combustion furnace and is electrically connected with the variable frequency pump. By SO2The concentration detector detects the concentration of sulfur dioxide in the flue gas discharged from the chimney of the combustion furnace, and feeds back a signal to the variable frequency pump through the control system if the concentration of sulfur dioxide is equal to or lower than the concentration of sulfur dioxide in the flue gas2The concentration is close to 50mg/m3The variable frequency pump automatically adjusts the amount of fresh alkali liquor added into the desulfurizing tower, increases the processing capacity of the desulfurizing tower, reduces the content of sulfides in the fuel gas, and maintains the SO in the subsequently discharged flue gas2The concentration is less than or equal to 50mg/m3And meets the environmental protection standard.
Furthermore, a liquid level control valve in the alkali liquor control system comprises a liquid level transmitter and a liquid level regulating valve, wherein the liquid level transmitter is installed on the side edge of the alkali liquor buffer tank, and the liquid level regulating valve is electrically connected with the liquid level transmitter. Install the liquid level changer in alkali lye buffer tank side, can detect the liquid level of alkali lye in the buffer tank constantly, when the liquid level reached the upper limit value, liquid level changer feedback signal to liquid level governing valve, through the discharge of liquid level governing valve control alkali lye, discharge the absorption liquid to specific position, the follow-up environmental protection of being convenient for is handled.
Furthermore, the desulfurizing tower, the alkali liquor buffer tank and the cooler are directly connected into an integrated device through flange openings. The desulfurizing tower is connected with the flange mouth at alkali lye buffer tank top, and the cooler then is the flange mouth lug connection with the desulfurizing tower top, and the three constitutes the equipment of integral type, can reduce area through the integrated design, still can conveniently dismantle the maintenance simultaneously.
Further, the variable frequency pump is provided with an alkali liquor inlet, and a soft water inlet is arranged between the variable frequency pump and the water alkali mixer.
Drawings
FIG. 1 is a schematic structural view of an integrated high-efficiency desulfurization and dehydration device of the present invention;
FIG. 2 is a schematic structural view of a desulfurization and dewatering system of the integrated high-efficiency desulfurization and dewatering device of the present invention;
FIG. 3 is a schematic view of an alkali liquor control system of the integrated high-efficiency desulfurization and dehydration device of the present invention;
FIG. 4 shows the SO of the integrated high-efficiency desulfurizing and dewatering device2Schematic diagram of a detection system.
Wherein, 1, a desulfurization and water removal system; 2-an alkali liquor control system; 3-SO2A concentration regulation control system; 4-furnace chimney; 11-an alkali liquor buffer tank; 12-a desulfurization tower; 13-a cooler; 14-a gas inlet; 15-an alkali liquor inlet; 16-a purified gas outlet; 21-an alkali liquor circulating pump; 22-a level transmitter; 23-liquid level regulating valve; 24-a water alkali mixer; 31-SO2A concentration detector; 32-variable frequency pump; 33-fresh lye inlet; 34-Soft water inlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1, the utility model discloses a high-efficient desulfurization water trap of integral type, including desulfurization water trap system 1, alkali lye control system 2 and SO2Concentration regulation control system 3, the three passes through pipeline interconnect, and wherein desulfurization dewatering system 1 is arranged in removing the hydrogen sulfide in the gas and reducing the water content of gas, and alkali lye control system 2 is through stepping up and carry the circulation alkali lye to reuse in desulfurizing tower 12, realizes the cyclic utilization of alkali lye, and SO passes through the pipe connection of pipeline2The concentration regulation control system 3 detects the concentration of sulfur dioxide in the flue gas discharged from a combustion furnace chimney 4 and detects the concentration of sulfur dioxide according to SO2The conveying amount of the fresh alkali liquor is adjusted by concentration, and automatic control gas desulfurization is realized. The alkali liquor control system and the SO of the utility model2The adjusting and controlling processes of the concentration adjusting and controlling system are controlled by the DCS control system.
Specifically, as shown in fig. 2, the desulfurization and water removal system 1 comprises an alkali liquor buffer tank 11, a desulfurization tower 12 and a cooler 13, wherein the desulfurization tower 11 is connected with a flange port at the top of the alkali liquor buffer tank 12, the cooler 13 is connected with a flange port at the top of the desulfurization tower 12, and the three components form an integrated device, so that the occupied area is greatly reduced. The treatment process of the integrated desulfurization and dehydration system 1 is as follows: the gas enters into desulfurizing tower 12 from the gas entry 14 of desulfurizing tower 12 bottom, desulfurizing tower 12 top is provided with alkali lye entry 15, the gas gets into the back from desulfurizing tower 12 bottom, with the alkali lye countercurrent contact in the tower, take off hydrogen sulfide, the gas of desorption hydrogen sulfide gets into cooler 13 and cools off the dewatering, through cooler 13 cooling dewatering, reduce moisture content after, discharge from the purified gas export 16 at cooler 13 top, get into next process, the alkali lye that has absorbed hydrogen sulfide flows back to the alkali lye buffer tank 11 of bottom.
Specifically, as shown in fig. 3, the alkali liquor control system 2 includes an alkali liquor circulating pump 21, a liquid level transmitter 22, a liquid level regulating valve 23 and a water-alkali mixer 24, the alkali liquor circulating pump 21 is disposed at the lower part of the alkali liquor buffer tank 11, and most of the alkali liquor in the alkali liquor buffer tank 11 flows into the alkali liquor circulating pump 21 through a pipeline; the liquid level transmitter 22 is installed on the side wall of the alkali liquor buffer tank 11 and used for monitoring the height of the liquid level in the alkali liquor buffer tank 11, when the liquid level in the alkali liquor buffer tank 11 reaches an upper limit value, the liquid level transmitter 22 feeds back a signal to the liquid level regulating valve 23 electrically connected with the liquid level transmitter through a DCS control system, the liquid level regulating valve 23 controls and increases the liquid discharge amount of circulating alkali liquor, reduces the liquid level in the alkali liquor buffer tank 11, and maintains the liquid level balance in the alkali liquor buffer tank 11; the water-alkali mixer 24 is arranged near the top of the desulfurizing tower 12, one end of the water-alkali mixer is connected with the alkali liquor inlet 14 at the top of the desulfurizing tower 12, the other end of the water-alkali mixer is connected with the alkali liquor circulating pump 21, the circulating alkali liquor of the alkali liquor buffer tank 11 can return to the desulfurizing tower 12 through the alkali liquor circulating pump 21 and the water-alkali mixer 24 for reuse, and the circulation utilization of the alkali liquor is realized.
In particular, the SO2The concentration regulation control system 3 comprises SO2Concentration detector 31 and variable frequency pump 32, SO2The concentration detector 31 is arranged at the front end of the combustion furnace chimney 4, the variable frequency pump 32 and the SO2The concentration detector 31 is electrically connected with the water-alkali mixer 24 through a pipeline, a fresh alkali liquor inlet 33 is arranged on the variable frequency pump 32, and the variable frequency pump is connected with the fresh alkali liquor inlet 33A soft water inlet 34 is arranged between the frequency pump 32 and the water alkali mixer 24, and when SO is contained in the flue gas at the outlet of the chimney2At higher concentrations, SO is initiated2The concentration detector 31 gives an alarm, and feeds back a signal to the variable frequency pump 32 through the DCS control system, the variable frequency pump 32 conveys fresh alkali liquor into the water alkali mixer 24 through the fresh alkali liquor inlet 33, the alkali liquor amount is adjusted, the treatment capacity of the desulfurizing tower is increased, the content of sulfide in fuel gas is reduced, and SO in subsequently discharged flue gas is maintained2The concentration is less than or equal to 50mg/m3The requirements of (1).
To sum up, the utility model provides a high-efficient desulfurization water trap of integral type through with alkali lye buffer tank, desulfurizing tower and cooler connect into integral type equipment from bottom to top, reduce equipment area and purify the moisture content of gas to alkali lye control system and SO have been add2The concentration control and regulation system can convey the circulating alkali liquor which flows back into the alkali liquor buffer tank into the desulfurizing tower again through the alkali control system, so that the alkali liquor can be recycled; by SO2Concentration regulation control system detects SO in flue gas that fires burning furnace chimney exhaust2Concentration, automatic adjustment of fresh alkali liquor addition, SO control2The concentration is less than or equal to 50mg/m3And meets the environmental protection standard.
The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology if they do not depart from the spirit and scope of the present invention.
Claims (5)
1. An integrated efficient desulfurization and dehydration device is characterized by comprising a desulfurization and dehydration system, an alkali liquor control system and SO2The concentration regulation and control system comprises a desulfurization tower, an alkali liquor buffer tank and a cooler, wherein the alkali liquor buffer tank, the desulfurization tower and the cooler are sequentially connected from top to bottom to form integrated equipment; the alkali liquor control system comprises an alkali liquor circulating pump, a liquid level control valve and a water-alkali mixer, wherein the alkali liquor circulating pump is connected below the alkali liquor buffer tank through a pipelineThe liquid level control valve is arranged on the side wall of the alkali liquor buffer tank, one end of the water-alkali mixer is connected with the desulfurizing tower through a pipeline, and the other end of the water-alkali mixer is connected with the alkali liquor circulating pump through a pipeline; the SO2The concentration regulation control system is connected with the water-alkali mixer through a pipeline according to the SO at the outlet of a combustion furnace chimney2Adjusting the addition amount of the alkali liquor.
2. The integrated high-efficiency desulfurization and water removal device according to claim 1, wherein the SO2The concentration regulation control system comprises SO2Concentration detector and inverter pump, inverter pump with the water alkali blender passes through the pipe connection, SO2The concentration detector is arranged at the outlet of the chimney of the combustion furnace and is electrically connected with the variable frequency pump.
3. The integrated efficient desulfurization and water removal device according to claim 1, wherein the liquid level control valve comprises a liquid level transmitter and a liquid level regulating valve, the liquid level transmitter is installed on the side wall of the alkali liquor buffer tank to detect the liquid level in the alkali liquor buffer tank, and the liquid level regulating valve is electrically connected with the liquid level transmitter.
4. The integrated efficient desulfurization and water removal device according to claim 1, wherein the desulfurization tower, the lye buffer tank and the cooler are connected through flange ports to form an integrated device.
5. The integrated high-efficiency desulfurization and water removal device according to claim 2, wherein the variable frequency pump is provided with a concentrated alkali liquid inlet, and a soft water inlet is arranged between the variable frequency pump and the water alkali mixer.
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| CN202021921660.0U CN213408222U (en) | 2020-09-04 | 2020-09-04 | Integrated efficient desulfurization and water removal device |
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| CN202021921660.0U CN213408222U (en) | 2020-09-04 | 2020-09-04 | Integrated efficient desulfurization and water removal device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797735A (en) * | 2021-10-16 | 2021-12-17 | 安徽省华鑫铅业集团有限公司 | Tail gas treatment method based on ammonia desulphurization |
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2020
- 2020-09-04 CN CN202021921660.0U patent/CN213408222U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797735A (en) * | 2021-10-16 | 2021-12-17 | 安徽省华鑫铅业集团有限公司 | Tail gas treatment method based on ammonia desulphurization |
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