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CN-116855288-B - Biogas purifying treatment system

CN116855288BCN 116855288 BCN116855288 BCN 116855288BCN-116855288-B

Abstract

The application relates to a biogas purification treatment system, which relates to the field of biogas purification and comprises a filter, a dehydrator, a desulfurizing tower, a fine filter and a gas storage tank, wherein the dehydrator comprises a dehydration body and a detection channel, a water absorption color-changing component is arranged on the dehydration body and used for detecting the content of water in the detection channel, a gas inlet is formed in the dehydration body, a gas outlet I and a gas outlet II are formed in the detection channel, a sealing component is arranged on the dehydration body and used for sealing the gas outlet I or the gas outlet II, a connecting pipe I and a connecting pipe II are arranged on the dehydration body, the connecting pipe I is used for connecting the gas outlet I and the desulfurizing tower, and the connecting pipe II is used for connecting the gas outlet II and the gas inlet. The water in the dehydrated methane is detected through the water absorption color-changing component, so that water residues in the dehydrated methane are reduced, water residues in the gas storage tank are reduced, and the situation that the gas storage tank is frozen by the water in the methane is reduced.

Inventors

  • LI WEI
  • ZHANG ZHENGQIANG
  • CHEN BO
  • GUO HUAIQING
  • GUO LIRONG
  • NI LINJIE
  • ZHU JIANYUN

Assignees

  • 浙江万泰环境工程有限公司

Dates

Publication Date
20260512
Application Date
20230808

Claims (6)

  1. 1. The biogas purification treatment system comprises a filter (1), a dehydrator (2), a desulfurizing tower (3), a fine filter (4) and a gas storage tank (5), wherein biogas sequentially passes through the filter (1), the dehydrator (2), the desulfurizing tower (3) and the fine filter (4) and is purified and stored in the gas storage tank (5), and is characterized in that the dehydrator (2) comprises a dehydrating body (21) and a detection channel (22) arranged on the dehydrating body (21), a water-absorbing color-changing component (8) is arranged on the dehydrating body (21), the water-absorbing color-changing component (8) stretches into the detection channel (22), the water-absorbing color-changing component (8) is used for detecting the content of water in the detection channel (22), an air inlet (2112) is formed in the dehydrating body (21), an air outlet I (2222) and an air outlet II (2221) are formed in the detection channel (22), a sealing component (7) is arranged on the dehydrating body (21), the sealing component (7) is used for sealing the air outlet I (2222) or the air outlet II (1), the dehydrating body (21) is provided with an air outlet II (22223) and the air outlet II (23) is connected with the connecting pipe (23), the second connecting pipe (24) is used for connecting the second air outlet (2221) and the air inlet (2112); the sealing assembly (7) comprises a regulating disc (71) rotatably connected to the dewatering body (21), a first sealing element (72) and a second sealing element (73) which are arranged on the regulating disc (71), an opening (74) is formed in the regulating disc (71), a second air outlet (2221) is arranged on a rotating path of the second sealing element (73) and the opening (74), the opening (74) is used for being communicated with the second air outlet (2221), a first air outlet (2222) is arranged on a rotating path of the first sealing element (72), when the second sealing element (73) seals the second air outlet (2221), the first air outlet (2222) is communicated with the first connecting pipe (23), and when the opening (74) is communicated with the second air outlet (2221), the first sealing element (72) seals the first air outlet (2222); The water-absorbing color-changing component (8) comprises a rotary table (81) rotatably connected to the dewatering body (21) and a plurality of water-absorbing color-changing pieces (82) arranged on the rotary table (81), and the detection channel (22) is positioned on the moving path of the water-absorbing color-changing pieces (82); a cover plate (9) is rotatably connected to the dehydration body (21), and the cover plate (9) is used for rotatably covering one end, close to the dehydration body (21), of the detection channel (22); The cover plate (9), the rotary plate (81) and the regulating plate (71) are mutually parallel, the rotary direction of the rotary plate (81) is the same as the rotary direction of the cover plate (9) when the detecting channel (22) is opened, the regulating plate (71) is connected with a transmission rod (76) in a sliding manner, the sliding direction of the transmission rod (76) is consistent with the radial direction of the regulating plate (71), the cover plate (9) is provided with a first driving rod (91), the rotary plate (81) is provided with a plurality of second driving rods (811), the second driving rod (811) and the water absorbing color changing piece (82) are correspondingly arranged, the transmission rod (76) is positioned between the adjacent first driving rod (91) and the second driving rod (811), the first driving rod (91) is provided with a guide surface (911), the first guide surface (911) is inclined in a direction away from the rotating shaft of the cover plate (9), the second driving rod (811) is provided with a guide surface (11), the second guide surface (8111) is inclined in a direction away from the rotating shaft of the cover plate (9), the second guide surface (8111) is inclined towards the rotating shaft (11), the sliding friction of the transmission rod (76) is larger than the rotating friction of the adjusting disc (71), a limiting block (711) is arranged on the adjusting disc (71), the limiting block (711) is used for limiting the rotating angle of the adjusting disc (71), the distance between the rotating axes of the cover plate (9) and the rotating disc (81) is larger than the sum of the radiuses of the cover plate (9) and the rotating disc (81), and the distance between the first driving rod (91) and the rotating axes of the cover plate (9) is smaller than the sum of the maximum distances between the second driving rod (811) and the rotating disc (81).
  2. 2. The biogas purification treatment system as claimed in claim 1, wherein the included angle between two adjacent driving rods (811) is larger than twice the rotation angle of the driving rod (76), the turntable (81) is provided with a plurality of air holes (812) in an opening manner, and the air holes (812) are positioned between the adjacent water-absorbing color-changing pieces (82).
  3. 3. The biogas purification treatment system as recited in claim 1, wherein the water-absorbing color-changing piece (82) is a color-changing silica gel block, a drying box (25) is arranged on the dehydration body (21), the turntable (81) is positioned in the drying box (25), and the detection channel (22) penetrates through the drying box (25).
  4. 4. The biogas purification treatment system as recited in claim 1, wherein the detection channels (22) are provided with a plurality of first connecting pipes (23) corresponding to the detection channels (22), and second connecting pipes (24) corresponding to the detection channels (22).
  5. 5. A biogas purification treatment system according to claim 4, wherein the dehydration body (21) comprises a dehydration part (211) and a gas storage part (212), the gas inlet (2112) is arranged at the dehydration part (211), the detection channel (22) is communicated with the gas storage part (212), and the detection channel (22) is arranged above the gas storage part (212).
  6. 6. A biogas purification treatment system according to claim 1, wherein the detection channel (22) is provided with a window (26), and the window (26) is used for observing the water-absorbing color-changing component (8).

Description

Biogas purifying treatment system Technical Field The application relates to the field of biogas purification, in particular to a biogas purification treatment system Background Biogas is a mixed gas, and its main component is methane, and then contains hydrogen sulfide, saturated steam, high-carbon hydrocarbon and other impurities (from ethane C2H6 to heptane C7H 16), and sometimes contains nitrogen, helium, hydrogen, siloxane, halogenated hydrocarbon and solid particles. The biogas in the district level can be used for generating electricity and used as mechanical power, and the biogas produced in large and medium-sized biogas engineering can be used for generating electricity, burning a boiler, processing food, heating and the like. Because the biogas contains the impurities and the flow, pressure, temperature, concentration and the like of the biogas are unstable, and the biogas is directly used for equipment corrosion, grinding and the like caused by the gas power generation, thereby seriously shortening the service life of the gas power generator, and the biogas is required to be purified by a biogas purification system before being utilized so as to solve the problems. The marsh gas purifying system consists of filter, dehydrator, desulfurizing tower, fine filter, gas tank, etc. Filtering solid impurities in the biogas by a filter, respectively removing water molecules and sulfur molecules in the biogas by a desulfurizing tower and a dehydrator, further filtering the biogas by a fine filter, and storing the biogas in a gas storage tank after meeting the use standard. In the related art, methane is dehydrated from a dehydrator and enters a pipeline, and partial water molecules in the methane entering the gas storage tank are not removed, so that when the methane is pressurized and stored in the gas storage tank, the water in the methane is frozen and is easy to damage the gas storage tank, and the improvement is needed. Disclosure of Invention In order to prevent the gas storage tank from being frozen out by water in the biogas, the application provides a biogas purifying treatment system. The biogas purification treatment system provided by the application adopts the following technical scheme: The utility model provides a marsh gas purifying treatment system, includes filter, dehydrator, desulfurizing tower, smart filter, gas holder and pipeline, marsh gas is in the gas holder through filter, dehydrator, desulfurizing tower, smart filter's purification in proper order along the pipeline is stored, the dehydrator includes the dehydration body and locates detect the passageway on the dehydration body, be equipped with the water absorption subassembly that discolours on the dehydration body, the water absorption subassembly that discolours stretches into detect the passageway, the water absorption subassembly that discolours is used for detecting the content of water in the detect passageway, the air inlet has been seted up on the dehydration body, air outlet one and air outlet two have been seted up on the detect passageway, be equipped with seal assembly on the dehydration body, seal assembly is used for shutoff air outlet one or air outlet two, be equipped with on the dehydration body connecting pipe one with connecting pipe two, connecting pipe one be used for connecting air outlet one with the desulfurizing tower, connecting pipe two be used for connecting air outlet two with the air inlet. Through adopting above-mentioned technical scheme, in the in-process of actual purification marsh gas, marsh gas gets into dehydration body along the pipeline after the filtration of filter and dewaters, marsh gas after the dehydration gets into in the detection passageway, when passing through the detection passageway, marsh gas is through the subassembly that discolours that absorbs water, staff observes the expansion piece that absorbs water, when the colour of the subassembly that discolours that absorbs water changes, seal assembly shutoff gas outlet, make marsh gas flow out from gas outlet two get into in connecting pipe two, and then get into again in the dehydration body from the air inlet along connecting pipe two, dewater in the marsh gas after the dehydration gets into the detection passageway, if the colour of the subassembly that discolours that absorbs water does not change, seal assembly shutoff gas outlet two, marsh gas in the detection passageway gets into connecting pipe two from the gas outlet, get into desulfurization in the desulfurizing tower. The water in the dehydrated methane is detected through the water absorption color-changing component, so that water residues in the dehydrated methane are reduced, water residues in the gas storage tank are reduced, and the situation that the gas storage tank is frozen by the water in the methane is reduced. Preferably, the sealing assembly comprises a regulating disc rotatably connected to the dewatering body, a first sealing element and a second s