CN212316052U

CN212316052U - Immersed biogas desulfurization device

Info

Publication number: CN212316052U
Application number: CN202020106608.3U
Authority: CN
Inventors: 李卫松; 朱磊; 李坤昌; 韦萌
Original assignee: Henan Lantu Environmental Protection Technology Co ltd
Current assignee: Henan Lantu Environmental Protection Technology Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2021-01-08
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses an immersed biogas desulfurization device, which comprises a spray tower, a regeneration tower and a sedimentation tank; a spray tower: the inner wall of the spray tower is provided with a packing support plate, the packing support plate is sequentially provided with a bottom layer of packing, a redistributor and a top layer of packing, a demister is arranged above the top layer of packing, the top end of the spray tower is communicated with a clean biogas pipeline, the side surface of the spray tower is communicated with a crude biogas inlet pipeline, and the crude biogas inlet pipeline is provided with a check valve; a regeneration tower: the top end of the regeneration tower is communicated with an emptying valve, the side surface of the regeneration tower is provided with an air blower, the side surface of the regeneration tower is communicated with a first circulating pump, and the first circulating pump is communicated with the bottom end of the spray tower; a sedimentation tank: the sedimentation tank is communicated with the bottom end of the regeneration tower, the bottom end of the sedimentation tank is communicated with a discharge pipeline, and the immersed biogas desulfurization device can avoid the generation of secondary wastes and has the effects of low power consumption, high desulfurization and no pollution.

Description

Immersed biogas desulfurization device

Technical Field

The utility model relates to a marsh gas purifies technical field, specifically is an submergence formula marsh gas desulphurization unit.

Background

In the anaerobic fermentation process of high-concentration organic wastewater, hydrogen and biogas resources can be generated, the recoverable value is high, but the generated biogas is mixed with more hydrogen sulfide gas, the strict regulation is provided in the national environmental protection standard, when the biogas is used as a fuel energy source, the hydrogen sulfide content in the biogas cannot exceed 20mg/m for carrying out heavy year, and the hydrogen sulfide corrodes an iron pipeline seriously, so that after the biogas is generated, the desulfurization is carried out firstly and then the transportation or the use is carried out, the currently common biogas desulfurization methods are dry desulfurization, wet desulfurization and biological desulfurization, the dry desulfurization effect is good, the desulfurization efficiency is high, but the solid desulfurizer needs to be replaced regularly, the method is suitable for engineering projects with low hydrogen sulfide content and small gas content, the conventional wet desulfurization is to mix alkali liquor and desulfurizer with the biogas by an atomization spraying method, and the project with large gas content and high hydrogen sulfide content is suitable for projects, however, the desulfurization mode can generate secondary waste, in addition, the wastewater treatment and discharge cost after desulfurization is too high, the desulfurization effect is relatively low in the actual operation of biological desulfurization, wastewater containing sulfuric acid can be generated, secondary pollution exists, and the environmental protection is not facilitated.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide an submergence formula marsh gas desulphurization unit, this submergence formula marsh gas desulphurization unit can avoid the production of secondary discarded object, has low-power consumption, high desulfurization, pollution-free effect, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: an immersed biogas desulfurization device comprises a spray tower, a regeneration tower and a sedimentation tank;

a spray tower: the inner wall of the spray tower is provided with a packing support plate, the packing support plate is sequentially provided with a bottom layer of packing, a redistributor and a top layer of packing, a demister is arranged above the top layer of packing, the top end of the spray tower is communicated with a clean biogas pipeline, the side surface of the spray tower is communicated with a crude biogas inlet pipeline, and the crude biogas inlet pipeline is provided with a check valve;

a regeneration tower: the top end of the regeneration tower is communicated with an emptying valve, the side surface of the regeneration tower is provided with an air blower, the side surface of the regeneration tower is communicated with a first circulating pump, and the first circulating pump is communicated with the bottom end of the spray tower;

a sedimentation tank: the sedimentation tank is communicated with the bottom end of the regeneration tower, the bottom end of the sedimentation tank is communicated with a discharge pipeline, a valve is mounted on the discharge pipeline, the side surface of the sedimentation tank is communicated with a second circulating pump, a water outlet of the second circulating pump is communicated with the spray tower through a water pipe, an atomization sprayer is mounted at the end part of the water pipe, and the atomization sprayer is positioned between the filler at the top layer and the demister;

the input ends of the first circulating pump, the air blower and the second circulating pump are electrically connected with the output end of the external single chip microcomputer.

Further, still include the aeration head, the aeration head is installed at the tip of thick marsh gas inlet line, and is located the bottom of spray column, utilizes the aeration head can make in gaseous bubble form with the small-particle diameter gets into the spray column, can accelerate the reaction efficiency of blender and desulfurizer.

Compared with the prior art, the beneficial effects of the utility model are that: the immersed methane desulfurization device has the following advantages:

the immersed biogas desulfurization device can efficiently remove hydrogen sulfide gas in biogas, can not generate wastewater in the desulfurization process, is beneficial to environmental protection, can regenerate desulfurizer, consumes less resources, can improve the contact area and the contact time of gas and liquid by adopting the immersed design, realizes efficient desulfurization, and can recover high-quality sulfur products after desulfurization.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1 check valve, 2 filler supporting plates, 3 fillers, 4 redistributors, 5 atomizing sprayers, 6 demisters, 7 clean biogas pipelines, 8 first circulating pumps, 9 regeneration towers, 10 air blowers, 11 sedimentation tanks, 12 second circulating pumps, 13 valves, 14 emptying valves, 15 crude biogas inlet pipelines, 16 aeration heads and 17 spray towers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: an immersed biogas desulfurization device comprises a spray tower 17, a regeneration tower 9 and a sedimentation tank 11;

a spray tower 17: the inner wall of the spray tower 17 is provided with a filler supporting plate 2, the filler supporting plate 2 is used for supporting the filler 3 in the spray tower 17, the filler supporting plate 2 is sequentially provided with a bottom layer of filler 3, a redistributor 4 and a top layer of filler 3, the filler 3 can stop the floating of particles, the distributor 4 can uniformly distribute liquid containing a desulfurizer to ensure that mixed liquid fully reacts with methane, a demister 6 is arranged above the top layer of filler 3, the demister 6 mainly comprises fixing devices such as wave-shaped blades, plates and clamping strips and can remove small particle fog contained in the gas, the top end of the spray tower 17 is communicated with a methane clean pipeline 7 for discharging the purified methane, the side surface of the spray tower 17 is communicated with a crude methane inlet pipeline 15, the crude methane inlet pipeline 15 is provided with a check valve 1, and the methane enters the spray tower 17 from the crude methane inlet pipeline 15, the device also comprises an aeration head 16, wherein the aeration head 16 is arranged at the end part of the crude biogas inlet pipeline 15 and is positioned at the bottom end of the spray tower 17, and biogas is discharged from the aeration head 16 after entering the crude biogas inlet pipeline 15, so that on one hand, the biogas can be divided into bubbles with small particle size, the biogas and water mist containing a desulfurizer fully react, the chemical reaction efficiency is improved, on the other hand, the bubbles with small particle size passing through the aeration head 16 can be attached to the surface of sulfur particles, an air flotation effect is formed, and the sulfur simple substance is prevented from being enriched and blocked at the bottom of the spray tower 17;

a regeneration tower 9: the top end of the regeneration tower 9 is communicated with an air release valve 14, the side surface of the regeneration tower 9 is provided with an air blower 10, the side surface of the regeneration tower 9 is communicated with a first circulating pump 8, the first circulating pump 8 is communicated with the bottom end of a spray tower 17, the regeneration of a desulfurizer can be realized in the regeneration tower 9, the desulfurizer reacts with oxygen, the quality of the desulfurizer is not changed in the whole process, and the defect that secondary pollutants are easily generated in the traditional desulfurization method is overcome;

a sedimentation tank 11: the sedimentation tank 11 is communicated with the bottom end of the regeneration tower 9, regenerated desulfurizer can enter the sedimentation tank 11, the bottom end of the sedimentation tank 11 is communicated with a discharge pipeline, a valve 13 is arranged on the discharge pipeline, sulfur particles can be precipitated at the bottom end of the sedimentation tank 11 under the action of gravity after the desulfurizer containing the sulfur particles enters the sedimentation tank 11, the sulfur particles can be periodically collected through the control valve 13, the side surface of the sedimentation tank 11 is communicated with a second circulating pump 12, a water outlet of the second circulating pump 12 is communicated with a spray tower 17 through a water pipe, an atomizing sprayer 5 is arranged at the end part of the water pipe, the atomizing sprayer 5 is positioned between a filler 3 and a demister 6 at the top layer, the second circulating pump 12 is used for conveying the mixed liquid of the desulfurizer to the spray tower 17 and spraying out from the atomizing sprayer 5 in the form of water mist to react with methane to remove hydrogen sulfide gas in the methane, simultaneously, carbon dioxide gas can be removed;

wherein, the input ends of the first circulating pump 8, the blower 10 and the second circulating pump 12 are electrically connected with the output end of the external singlechip.

When in use: firstly, a second circulating pump 12 and a first circulating pump 8 are opened, the flow rates of the first circulating pump and the second circulating pump are consistent, under the action of the second circulating pump 12, liquid containing the desulfurizer above a sedimentation tank 11 is conveyed into an atomizing sprayer 5 in a spray tower 17, the liquid containing the desulfurizer is sprayed into the spray tower 17 in a water mist stroke, a check valve 1 is opened, methane enters the spray tower 17 from a crude methane inlet pipeline 15, is subjected to electrolytic reaction with the liquid containing the desulfurizer in a small particle bubble mode under the action of an aeration head 16, simultaneously rises and reacts with the water mist, sulfur elementary substances and the desulfurizer in the water mist produced after the reaction fall into the bottom end of the spray tower 17 and are conveyed into a regeneration blower 9 under the action of the first circulating pump 8, the purified methane is discharged out of the spray tower 17 from a clean methane pipeline 7, a 10 is opened, and the liquid containing the sulfur elementary substances and the desulfurizer reacts with oxygen, the cyclic utilization is realized to complex iron, the desulfurizer regenerates, the desulfurizer that contains the sulphur granule simultaneously gets into in the sedimentation tank 11 once more, realize the cyclic regeneration utilization of desulfurizer, the sulphur granule deposits gradually in the bottom of sedimentation tank 11 under the action of gravity to discharge the collection to the sulphur granule through valve 13 regularly, after the technology is stable, the tiny particle bubble of aeration head 16 department can be attached to on sulphur granule surface, form the effect of air supporting, avoid the enrichment of sulphur simple substance in the spray column 17 bottom, prevent to arouse and block up.

It should be noted that the preferred model of the first circulation pump 8 and the second circulation pump 12 disclosed in the present embodiment is isdigrgrgihgygigb 150-160A, the preferred model of the blower 10 is RB-1520, and the external one-chip microcomputer controls the first circulation pump 8, the blower 10 and the second circulation pump 12 to operate by a method commonly used in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An immersed biogas desulfurization device is characterized in that: comprises a spray tower (17), a regeneration tower (9) and a sedimentation tank (11);

spray tower (17): the inner wall of the spray tower (17) is provided with a filler supporting plate (2), the filler supporting plate (2) is sequentially provided with a bottom layer of filler (3), a redistributor (4) and a top layer of filler (3), a demister (6) is arranged above the top layer of filler (3), the top end of the spray tower (17) is communicated with a clean biogas pipeline (7), the side surface of the spray tower (17) is communicated with a crude biogas inlet pipeline (15), and the crude biogas inlet pipeline (15) is provided with a check valve (1);

regeneration column (9): the top end of the regeneration tower (9) is communicated with an emptying valve (14), the side surface of the regeneration tower (9) is provided with an air blower (10), the side surface of the regeneration tower (9) is communicated with a first circulating pump (8), and the first circulating pump (8) is communicated with the bottom end of a spray tower (17);

sedimentation tank (11): the sedimentation tank (11) is communicated with the bottom end of the regeneration tower (9), the bottom end of the sedimentation tank (11) is communicated with a discharge pipeline, a valve (13) is installed on the discharge pipeline, the side surface of the sedimentation tank (11) is communicated with a second circulating pump (12), a water outlet of the second circulating pump (12) is communicated with a spray tower (17) through a water pipe, an atomization sprayer (5) is installed at the end part of the water pipe, and the atomization sprayer (5) is located between the filler (3) at the top layer and the demister (6);

the input ends of the first circulating pump (8), the blower (10) and the second circulating pump (12) are electrically connected with the output end of an external singlechip.

2. The submerged biogas desulfurization device of claim 1, characterized in that: the device also comprises an aeration head (16), wherein the aeration head (16) is arranged at the end part of the crude methane inlet pipeline (15) and is positioned at the bottom end of the spray tower (17).