Efficient biogas desulfurization treatment device

Abstract

The utility model discloses an efficient biogas desulfurization treatment device, which is characterized in that a spray tower comprises a spray main tower and an L-shaped biogas lead-in flue, and a liquid medicine tank, a lower horizontal spray pipe group, a cyclone spray area, a filter filler component, an upper horizontal spray pipe group and a water-gas separation mechanism are sequentially arranged in the spray main tower from bottom to top; the communicating end of the L-shaped biogas leading-in flue is arranged on the outer side wall of the spraying tower in a butt joint mode and located between the liquid medicine groove and the lower horizontal spraying pipe set, a gas inlet is formed in the gas inlet end of the L-shaped biogas leading-in flue, and one end of the lower horizontal spraying pipe set horizontally penetrates through the side wall of the spraying main tower and extends into one section of the interior of the L-shaped biogas leading-in flue to form a pretreatment spraying pipe set; a discharge port is formed in the top of the spraying main tower; and a radiation type spraying mechanism is arranged in the cyclone type spraying area. The device is favorable for improving the treatment capacity of the desulfurization spray tower, improving the desulfurization efficiency and ensuring that the emission of the biogas power generation tail gas does not pollute the atmosphere.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of biogas power generation, in particular to an efficient biogas desulfurization treatment device. BACKGROUND

[0002] The recycling of landfill biogas is an economically feasible and environmentally beneficial technology. By improving the biogas collection rate, increasing the generator set, and improving the power generation capacity, the power generation efficiency is effectively improved. The main component of biogas is methane, and biogas is composed of 50%-80% methane, 20%-40% carbon dioxide, 0%-5% nitrogen, less than 1% hydrogen, less than 0.4% oxygen, and 0.1%-3% hydrogen sulfide. When biogas is used for power generation, it must be desulfurized. During the power generation peak, the biogas consumption is large, the processing capacity of the desulfurization spray tower is small, the desulfurization efficiency is low, and the exhaust gas of the biogas power generation contains sulfur components, which will pollute the atmosphere when discharged. CONTENT OF THE UTILITY MODEL

[0003] The present application solves the technical problems of the prior art, and provides an efficient biogas desulfurization treatment device, which helps to improve the processing capacity of the desulfurization spray tower, improve the desulfurization efficiency, and ensure that the exhaust gas of the biogas power generation does not pollute the atmosphere, thereby providing strong protection for maintaining the normal production order of long-period biogas power generation.

[0004] The present application solves the above technical problems through the following technical solutions.

[0005] The efficient biogas desulfurization treatment device comprises a spray tower, the spray tower comprises a spray main tower and an L-shaped biogas introduction flue, the inside of the spray main tower is sequentially provided from bottom to top with a liquid medicine tank, a lower horizontal spray pipe group, a cyclone type spray zone, a filter filler assembly, an upper horizontal spray pipe group and a water-gas separation mechanism, the communication end of the L-shaped biogas introduction flue is butt-jointed and arranged on the outside wall of the spray tower and located between the liquid medicine tank and the lower horizontal spray pipe group, the gas inlet end of the L-shaped biogas introduction flue is provided with a gas inlet, one end of the lower horizontal spray pipe group horizontally penetrates through the side wall of the spray main tower and extends into the inside of the L-shaped biogas introduction flue to form a pretreatment spray pipe group, the top of the spray main tower is provided with a discharge port, the cyclone type spray zone is provided with a radial type spray mechanism, the radial type spray mechanism comprises an L-shaped spray main pipe, a vertical pipe section of the L-shaped spray main pipe is provided with a lower spray unit, the lower spray unit comprises three to five layers of spray branch pipe groups which are vertically spaced and circumferentially staggered, each layer of spray branch pipe group is composed of two spray branch pipes which are horizontally and symmetrically arranged, the communication end of the spray branch pipe is communicated with the vertical pipe section, a plurality of spray heads are arranged on the pipe body of the spray branch pipe, and the liquid medicine tank is communicated with the radial type spray mechanism, the lower horizontal spray pipe group and the upper horizontal spray pipe group through a liquid supply pipeline.

[0006] As preferred, the spray branch length of each layer spray branch group of the lower spray unit gradually decreases from the upper layer to the lower layer.

[0007] As preferred, the spray branch of the lower spray unit is upwardly inclined and has an angle of 5-15 degrees with the horizontal direction.

[0008] As preferred, the lower horizontal spray pipe group, the upper horizontal spray pipe group and the pretreatment spray pipe group are each composed of a horizontally arranged spray straight pipe and a plurality of spray heads installed on the spray straight pipe.

[0009] As preferred, the spray heads of the lower horizontal spray pipe group and the pretreatment spray pipe group are arranged to spray upward.

[0010] As preferred, the spray heads of the upper horizontal spray pipe group are arranged to spray downward.

[0011] As preferred, the spray heads of the lower spray unit are arranged to spray downward.

[0012] As preferred, the filter filler assembly is composed of a mesh plate and a porous ceramic oxidation catalytic filler installed on the mesh plate.

[0013] As preferred, the water-gas separation mechanism includes a mounting frame and a water collector arranged on the mounting frame.

[0014] As preferred, a sodium hypochlorite concentration meter and a liquid supply pump are arranged on the liquid supply pipeline.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The tower body structure is optimized, an L-shaped biogas introduction flue is added, the biogas introduction channel is optimized, the biogas passing time is delayed, a pretreatment spray pipe group is added, the spray density is increased, the desulfurization liquid and the biogas are fully contacted, high-efficiency desulfurization is realized, the generation of sulfur scale is effectively reduced, the safe and reliable operation of the equipment is maintained, the biogas power generation tail gas emission does not pollute the atmosphere, and strong support is provided for maintaining the normal production order of long-period biogas power generation.

[0017] 2. The spray main tower is provided with a lower horizontal spray pipe group, a radiation type spray mechanism, a filter filler assembly and an upper horizontal spray pipe group from bottom to top, forming a multi-layer overlapping spray zone, greatly enhancing the spray density, delaying the biogas passing time, improving the full contact between the desulfurization liquid and the biogas, realizing high-efficiency desulfurization, effectively reducing the generation of sulfur scale, and being beneficial to improving the safety and stability of the biogas power generation system. BRIEF DESCRIPTION OF DRAWINGS

[0018] The following drawings are intended to facilitate the description of the preferred embodiments and do not constitute a limitation on the scope of protection of the present application.

[0019] Figure 1 is a structural schematic diagram of an embodiment of the present application.

[0020] In the diagram: 1-Spray tower, 2-Main spray tower, 3-L-shaped biogas inlet flue, 4-Medicine tank, 5-Lower horizontal spray pipe assembly, 6-Cyclone spray zone, 7-Filter packing assembly, 8-Upper horizontal spray pipe assembly, 9-Water-gas separation mechanism, 10-Air inlet, 11-Pretreatment spray pipe assembly, 12-Discharge outlet, 13-L-shaped main spray pipe, 14-Vertical pipe section, 15-Lower spray unit, 16-Spray branch pipe, 17-Spray head, 18-Liquid supply pipeline. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] like Figure 1 As shown in the figure, the high-efficiency biogas desulfurization treatment device of this application includes a spray tower 1, which includes a main spray tower 2 and an L-shaped biogas inlet flue 3. The top of the main spray tower 2 has an outlet 12. Inside the main spray tower 2, from bottom to top, are arranged a chemical tank 4, a lower horizontal spray pipe assembly 5, a cyclone spray zone 6, a filter packing assembly 7, an upper horizontal spray pipe assembly 8, and a water-gas separation mechanism 9. The connecting end of the L-shaped biogas inlet flue 3 is connected to the outer wall of the spray tower 1 and located between the chemical tank 4 and the lower horizontal spray pipe assembly 5. The air inlet end of the L-shaped biogas inlet flue 3 is provided with an air inlet 10.

[0023] One end of the lower horizontal spray pipe assembly 5 horizontally passes through the side wall of the main spray tower 2 and extends into the L-shaped biogas inlet flue 3 to form a pretreatment spray pipe assembly 11. Furthermore, the lower horizontal spray pipe assembly 5, the upper horizontal spray pipe assembly 8, and the pretreatment spray pipe assembly 11 are all composed of horizontally arranged straight spray pipes and several nozzles installed on the straight spray pipes. In this embodiment, the nozzles of the lower horizontal spray pipe assembly 5 and the pretreatment spray pipe assembly 11 are all arranged to spray upwards. The nozzles of the upper horizontal spray pipe assembly 8 are all arranged to spray downwards.

[0024] The cyclone spray area 6 is provided with a radial spray mechanism, which includes an L-shaped spray main pipe 13, and a lower spray unit 15 arranged on a vertical pipe section 14 of the L-shaped spray main pipe 13. The lower spray unit 15 includes three to five layers of vertically spaced and circumferentially staggered spray branch pipe groups, each of which is composed of two horizontally symmetrically arranged spray branch pipes 16, the communicating ends of which are communicated with the vertical pipe section 14, and a plurality of spray heads 17 arranged on the pipe body of the spray branch pipes 16. Further, the spray heads 17 of the lower spray unit 15 are arranged to spray downward. In the embodiment, the lengths of the spray branch pipes 16 of each layer of the spray branch pipe groups of the lower spray unit 15 gradually decrease from the upper layer to the lower layer. The spray branch pipes 16 of the lower spray unit 15 are inclined upward and have an included angle of 5 to 15 degrees with the horizontal direction.

[0025] The liquid tank 4 is communicated with the radial spray mechanism, the lower horizontal spray pipe group 5 and the upper horizontal spray pipe group 8 through a liquid supply pipeline 18. The liquid supply pipeline 18 is provided with a sodium hypochlorite concentration meter and a liquid supply pump. The filter filler assembly 7 is composed of a mesh plate and a porous ceramic oxidation catalytic filler installed on the mesh plate. The water-air separation mechanism 9 includes a mounting frame and a water collector arranged on the mounting frame.

[0026] The above-described embodiments only express several embodiments of the present application, which are described in a more specific and detailed manner, but should not be understood as limiting the scope of the patent application. It should be noted that for ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

Claims

1. A high efficiency biogas desulfurization treatment device, characterized in that: The utility model provides a kind of spray tower (1), the spray tower (1) includes spray main tower (2) and L-shaped marsh gas introduction flue (3), the inside of spray main tower (2) is sequentially provided with liquid tank (4), lower horizontal spray pipe group (5), cyclone type spray area (6), filter filler assembly (7), upper horizontal spray pipe group (8) and water-gas separation mechanism (9) from bottom to top, the communication end of L-shaped marsh gas introduction flue (3) is butt joint and located between the liquid tank (4) and the lower horizontal spray pipe group (5) on the outside wall of spray tower (1), the air inlet end of the L-shaped marsh gas introduction flue (3) is provided with air inlet (10), one end of the lower horizontal spray pipe group (5) passes through the side wall of spray main tower (2) and extends into the inside of L-shaped marsh gas introduction flue (3) and forms pretreatment spray pipe group (11), the top of spray main tower (2) is provided with discharge port (12), the cyclone type spray area (6) is provided with radiation type spray mechanism, the radiation type spray mechanism includes L-shaped spray main pipe (13), L-shaped spray main pipe (13) is provided with lower spray unit (15) on vertical pipe section (14), lower spray unit (15) includes three to five layers of spray branch pipe group spaced vertically and staggered circumferentially, each layer of spray branch pipe group is formed by two spray branch pipes (16) arranged horizontally symmetrically, the communication end of the spray branch pipe (16) is communicated with the vertical pipe section (14), the pipe body of the spray branch pipe (16) is provided with a plurality of spray heads (17), the liquid tank (4) is communicated with the radiation type spray mechanism, lower horizontal spray pipe group (5) and upper horizontal spray pipe group (8) by liquid supply pipeline (18).

2. The high-efficiency biogas desulfurization treatment device according to claim 1, characterized in that: The length of the spray branch pipe (16) of each layer of spray branch pipe group of the lower spray unit (15) gradually decreases from the upper layer to the lower layer.

3. The efficient biogas desulfurization treatment device according to claim 1, characterized in that: The spray branch pipe (16) of the lower spray unit (15) is inclined upward and has an angle of 5 to 15 degrees with the horizontal direction.

4. The efficient biogas desulfurization treatment device according to claim 1, characterized in that: The lower horizontal spray pipe group (5), the upper horizontal spray pipe group (8) and the pretreatment spray pipe group (11) are each composed of a horizontal spray straight pipe and a plurality of spray heads installed on the spray straight pipe.

5. The high efficiency biogas desulfurization treatment device according to claim 4, characterized in that: The spray heads of the lower horizontal spray pipe group (5) and the pretreatment spray pipe group (11) are arranged to spray upward.

6. The high efficiency biogas desulfurization treatment device according to claim 4, characterized in that: The spray heads of the upper horizontal spray pipe group (8) are arranged to spray downward.

7. The efficient biogas desulfurization treatment device according to claim 1, characterized in that: The spray heads (17) of the lower spray unit (15) are arranged to spray downward.

8. The efficient biogas desulfurization treatment device according to claim 1, characterized in that: The filter filler assembly (7) is composed of a mesh plate and a porous ceramic oxidation catalytic filler installed on the mesh plate.

9. The efficient biogas desulphurization treatment device according to claim 1, characterized in that: The water-gas separation mechanism (9) includes a mounting frame and a water collector installed on the mounting frame.

10. The efficient biogas desulphurization treatment device according to claim 1, characterized in that: The liquid supply pipeline (18) is provided with a sodium hypochlorite concentration meter and a liquid supply pump.

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