CN215667864U - Intelligent biogas desulfurization coupling deodorization treatment system - Google Patents
Intelligent biogas desulfurization coupling deodorization treatment system Download PDFInfo
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- CN215667864U CN215667864U CN202122268260.5U CN202122268260U CN215667864U CN 215667864 U CN215667864 U CN 215667864U CN 202122268260 U CN202122268260 U CN 202122268260U CN 215667864 U CN215667864 U CN 215667864U
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Abstract
The utility model provides an intelligent biogas desulfurization coupling deodorization treatment system, which comprises a fan, a biological desulfurization tower, a nutrition pool and a controller, wherein the air inlet end of the fan is connected with an odor input end, the air outlet end of the fan is respectively connected with the biological desulfurization tower and the nutrition pool, the top of the biological desulfurization tower is provided with a pressure transmitter and an exhaust hole, the interior of the biological desulfurization tower is provided with a spray device, a packing layer and a liquid storage pool, the exhaust hole is connected with a user end by adopting a pipeline provided with a biogas analyzer, the spray device is sequentially connected with a circulating pump and the nutrition pool, the liquid storage pool is provided with an overflow port, the odor inlet, the methane inlet and the sewage port are respectively used for connecting the liquid storage tank with the nutrition tank, the air outlet end of the fan, the methane input end and the sewage treatment device, the nutrition tank is provided with a plurality of transmitters, and the controller is used for acquiring the measurement data of the methane analyzer and the transmitters in the system and controlling the opening and closing states of the valves in the system. The utility model uses the odor to maintain the aerobic state of the nutrient solution and the tower, thereby effectively reducing the cost of methane desulfurization.
Description
Technical Field
The utility model relates to the technical field of biological energy utilization, in particular to an intelligent biogas desulfurization coupling deodorization treatment system.
Background
The biogas biological desulphurization device utilizes the fan to introduce air or oxygen as oxidized H2The electron acceptor of S needs to strictly control the introduction amount of air or oxygen, and the desulfurization bacteria in the biological desulfurization tower filler are propagated by the nutrient solution and absorb H from the mixed methane2S, mixing H in the biogas2The S is converted into elemental sulfur and then converted into sulfuric acid, the pH value is continuously reduced due to the acid production reaction in the process, the generated sulfuric acid needs to be discharged from the biological desulfurization tower after reaching a certain acidity, and otherwise, the desulfurization effect of the desulfurization bacteria on the biogas is influenced.
At present, biological desulfurization technology is widely applied to odor desulfurization, but the technical requirement of methane desulfurization is higher than that of odor desulfurization. Patent CN 110484321A discloses an acid method biological desulfurization device and process, which are improved aiming at the problem of blockage of a desulfurization tower, and the processes of biogas desulfurization and wastewater denitrification are coupled by utilizing an anaerobic autotrophic denitrification process, so that two pollutants, namely sulfur and nitrogen, are removed while the waste is treated by the waste. Patent CN 111892964A discloses biogas biological desulfurization equipment and method for anaerobic fermentation of kitchen waste, which utilize kitchen waste leachate nitrified liquid under aerobic conditions as a circulating liquid main body, reduce the energy consumption of an aeration device, and have high culture desulfurization speed and high efficiency. Patent CN 112843999A discloses a biological treatment process and a device for sulfur-containing and nitrogen-containing waste gas, and provides a high-efficiency, energy-saving, economic and stable-operation biological treatment process and a device for sulfur-containing and nitrogen-containing waste gas. However, the existing biogas biological desulfurization technology has the following defects:
(1) the desulfurization process of the biogas biological desulfurization system needs to continuously introduce air or oxygen into the system for 24 hours through air supply equipment such as a fan, so that the energy consumption is high;
(2) the acid production reaction in the biogas biological desulfurization system causes that the nutrient solution can not be recycled, the reduction of pH in the nutrient solution can inhibit the activity of biological desulfurization bacteria to a certain extent, acid liquor needs to be discharged periodically, meanwhile, in order to ensure the desulfurization efficiency of biological flora in the biological desulfurization tower, the nutrient solution and alkaline substances need to be added continuously in the system operation process, and the operation cost of the biogas biological desulfurization system is greatly increased;
(3) the common control system of the biogas desulfurization device usually adopts PLC local control, and operators manually monitor the operation of the biogas biological desulfurization system, so that a large amount of manpower is consumed.
Therefore, an intelligent biogas desulfurization coupling deodorization treatment system is urgently needed to be provided aiming at the comprehensive application of biogas desulfurization and deodorization treatment, so that the odor generated in the operation process of a biogas project is fully utilized.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art and provides an intelligent biogas desulfurization coupling deodorization treatment system, and by combining deodorization and a biogas desulfurization process, the investment of an aeration fan in a biogas desulfurization system is reduced, and the cost of biogas desulfurization treatment is reduced.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an intelligent biogas desulfurization coupling deodorization treatment system comprises a fan, a biological desulfurization tower, a nutrition pool and a controller;
the air inlet end of the fan is connected with the biogas engineering workshop through a deodorization pipeline, the air outlet end of the fan is connected with the air inlet end of a first pipeline, the air outlet end of the first pipeline is divided into two paths, one path is connected with the bottom of the biological desulfurization tower through a second pipeline, and the other path is connected with the bottom of the nutrition pool through a third pipeline;
the top of the biological desulfurization tower is provided with a pressure transmitter and an exhaust hole, the exhaust hole is connected with a user side through an exhaust pipeline, and a methane analysis device is arranged on the exhaust pipeline; the biological desulfurization tower is internally provided with a spraying device, a packing layer and a liquid storage tank from top to bottom in sequence, the spraying device is connected with the liquid outlet end of a circulating pump through a circulating pipeline, the liquid inlet end of the circulating pump is connected with a nutrient tank through a liquid inlet pipeline, the side wall of the liquid storage tank is provided with an overflow port, an odor inlet, a methane inlet and a sewage port from top to bottom in sequence, wherein the overflow hole is communicated with the nutrient tank through an overflow pipeline, the odor inlet is communicated with a second pipeline, the methane inlet is connected with a methane input end through a methane pipeline, and the sewage port is connected with a sewage treatment device through a sewage pipeline;
nutrient solution is stored in the nutrient pool, and a temperature transmitter, a liquid level transmitter and a pH transmitter are arranged on the nutrient pool;
the first pipeline is provided with a pressure stabilizing regulating valve, the second pipeline is provided with an electric regulating valve and an odor flow transmitter, the third pipeline is provided with a regulating valve, the methane pipeline is provided with a methane flow transmitter, and the sewage pipeline is provided with a sewage discharge valve;
the pressure transmitter, the temperature transmitter, the liquid level transmitter, the pH transmitter, the pressure stabilizing regulating valve, the electric regulating valve, the odor flow transmitter, the methane flow transmitter, the regulating valve and the sewage discharge valve are all connected with the controller.
Preferably, the circulating pipeline, the exhaust pipeline and the biogas pipeline are all provided with maintenance valves.
Preferably, the waste valve is provided as a ball valve.
The utility model has the following beneficial technical effects:
according to the utility model, the deodorization process and the methane desulfurization process are combined, the pH value of the nutrient solution in the nutrient pool is adjusted by using the odor generated in the methane engineering workshop, alkaline substances are not required to be additionally added into the methane desulfurization system to adjust the pH value of the nutrient solution, the acid liquor discharge time in the methane desulfurization system is prolonged, the full utilization of waste gas in the methane engineering workshop is realized, and the operation cost of the methane desulfurization system is reduced. Meanwhile, the utility model can be combined with a sewage treatment device to provide acid liquor for sewage treatment for the sewage treatment device, thereby realizing the reutilization of the acid liquor generated by the methane desulfurization treatment and being beneficial to reducing the treatment cost of sewage.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. fan, 2, biological desulfurizing tower, 3, nutrition pool, 4, pressure transmitter, 5, marsh gas analytical equipment, 6, spray set, 7, packing layer, 8, liquid storage tank, 9, circulating pump, 10, steady voltage governing valve, 11, electrical control valve, 12, odor flow transmitter, 13, marsh gas flow transmitter, 14, blowdown valve, 15, governing valve, 16, temperature transmitter, 17, liquid level transmitter, 18, pH transmitter, 19, maintenance valve.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "bottom", "top", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only terms of relationships determined for convenience in describing structural relationships of the components or elements of the present invention, and do not particularly indicate any components or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "connected" and "connecting" should be interpreted broadly, and mean either a fixed connection or an integral connection or a detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
The utility model is further illustrated with reference to the following figures and examples.
An intelligent biogas desulfurization coupling deodorization treatment system is shown in figure 1 and comprises a fan 1, a biological desulfurization tower 2, a nutrition pool 3 and a controller.
The fan 1 is used for removing odor (containing a large amount of NH) generated in the biogas engineering workshop3) The biogas digester is introduced into a biological desulfurization tower 2 and a nutrition pool 3, the air inlet end of a fan 1 is connected with a biogas engineering workshop through a deodorization pipeline, the air outlet end of the fan 1 is connected with the air inlet end of a first pipeline, the air outlet end of the first pipeline is divided into two paths, one path is connected with the bottom of the biological desulfurization tower 2 through a second pipeline, the other path is connected with the bottom of the nutrition pool 3 through a third pipeline, and a pressure-stabilizing regulating valve 10 is arranged on the first pipeline and used for ensuring the stability of the air pressure in the system; the second pipeline is provided with an electric control valve 11 and an odor flow transmitter 12, the electric control valve 11 is used for adjusting the flow of odor entering the second pipeline so as to control the flow of odor entering the biological desulfurization tower 2, and the odor flow transmitter 12 is used for measuring the flow of odor in the second pipeline; the third pipeline is provided with a regulating valve 15 for inputting odor into the nutrition pool.
The top of the biological desulfurization tower 2 is provided with a pressure transmitter 4 and an exhaust hole, the pressure transmitter 4 is used for measuring the internal pressure of the biological desulfurization tower, the exhaust hole is connected with a user end through an exhaust pipeline and used for providing the processed clean biogas for the user, a biogas analysis device 5 is arranged on the exhaust pipeline, and the biogas analysis device 5 is used for detecting whether the processed biogas meets the processing requirements. The biological desulfurization tower 2 is internally provided with a spraying device 6, a packing layer 7 and a liquid storage tank 8 from top to bottom in sequence, the spraying device 6 is connected with the liquid outlet end of a circulating pump 9 through a circulating pipeline, the liquid inlet end of the circulating pump 9 is connected with a nutrient tank 3 through a liquid inlet pipeline, the circulating pump is used for extracting nutrient solution from the nutrient tank, and the spraying device is used for spraying the nutrient solution on the packing layer. The liquid storage tank 8 of the biological desulfurization tower 2 is used for storing acid liquor seeped from the packing layer, the side wall of the biological desulfurization tower is sequentially provided with an overflow port, an odor inlet, a methane inlet and a sewage port from top to bottom, wherein the overflow port is used for overflowing liquid in the liquid storage tank, and the overflowing liquid passes throughThe pipeline is connected with the nutrition pool to control the volume of liquid in the liquid storage pool; the odor inlet is communicated with the second pipeline and is used for inputting a large amount of NH into the biological desulfurization tower3Odor of (2); the biogas inlet is connected with a biogas input end through a biogas pipeline and is used for introducing biogas to be processed into the biological desulfurization tower for desulfurization treatment, and the biogas pipeline is provided with a biogas flow transmitter 13 which is used for monitoring the flow of biogas in the biogas pipeline in real time; the sewage port is connected with the sewage treatment device through a sewage pipeline, and a sewage discharge valve 14 is arranged on the sewage pipeline and used for discharging acid liquor in the liquid storage tank into the sewage treatment device in time for treatment and carrying out sewage treatment in cooperation with the sewage treatment device.
Nutrient solution is stored in the nutrient pool 3 and is used for providing nutrition and nitrogen sources required by survival for the desulfurization bacteria in the biological desulfurization tower, and a temperature transmitter 16, a liquid level transmitter 17 and a pH transmitter 18 are arranged on the nutrient pool 3.
The pressure transmitter 4, the temperature transmitter 16, the liquid level transmitter 17, the pH transmitter 18, the pressure-stabilizing regulating valve 10, the electric regulating valve 11, the odor flow transmitter 12, the methane flow transmitter 13 and the sewage discharge valve 14 are all connected with a controller, and the controller is used for receiving the measurement data of each transmitter in the system in real time and regulating and controlling the relevant valves according to the measurement data of each transmitter; and the circulating pipeline, the exhaust pipeline, the biogas pipeline and the third pipeline are all provided with maintenance valves 19, and all the maintenance valves are in an open state in the use process of the system.
Before the intelligent methane desulfurization coupling deodorization treatment system disclosed by the application starts to work, the blowdown valve 14 in the system is in a closed state, and other valves are in an open state. In the working process of the intelligent methane desulfurization coupling deodorization treatment system, a methane engineering workshop generates a large amount of NH3The odor is blown into the first pipeline by the fan 1 after passing through the deodorization pipeline, enters the liquid storage pool of the biological desulfurizing tower 2 through the second pipeline all the way, enters the nutrition pool 3 through the third pipeline in the other way of odor, is dissolved in the nutrient solution in the nutrition pool 3, not only provides a nitrogen source for the propagation of the desulfurizing bacteria in the biological desulfurizing tower, but also can adjust the pH value of the nutrient solution, prolongs the use of the nutrient solutionService life; the biogas to be treated enters a liquid storage tank 8 of a biological desulfurization tower 2 through a biogas pipeline, a controller controls an electric regulating valve 11 according to the measurement results of an odor flow transmitter 12 on a second pipeline and a biogas flow transmitter 13 on the biogas pipeline, the ratio of the odor content at the air inlet end of the biological desulfurization tower 2 to the biogas content is regulated, a circulating pump 9 is started by the controller, the circulating pump 9 extracts nutrient solution from a nutrient tank 3, a spraying device 6 in the biological desulfurization tower 2 sprays the nutrient solution on a packing layer 7 to provide nutrition for desulfurization bacteria in the biological desulfurization tower, the desulfurization bacteria convert the sulfur in the original biogas into sulfuric acid after the desulfurization treatment of the biogas, the generated acid solution seeps into the liquid storage tank 8, overflows from an overflow hole when the acid solution in the liquid storage tank 8 is excessive, flows into the nutrient tank 3 for recycling, and the treated biogas is discharged from an exhaust hole at the top of the biological desulfurization tower, after entering the exhaust pipeline, the biogas enters the exhaust pipeline and is detected to be qualified by the biogas analysis device 5, and then the biogas can be directly conveyed to a user end. The temperature transmitter 16, the liquid level transmitter 17 and the pH transmitter 18 are arranged in the nutrition pool 3, and when the pH value of the nutrient solution in the nutrition pool 3 is measured by the pH transmitter 18 and is less than 3, the controller controls the adjusting valve 15 on the third pipeline to be opened, more odor is introduced into the nutrition pool 3, and the pH value of the nutrient solution in the nutrition pool is adjusted; when the pH value of the nutrient solution in the nutrient pool 3 measured by the pH transmitter 18 is not less than 3 and the liquid level height measured by the liquid level transmitter 17 is greater than a set value, the controller controls the sewage valve 14 on the sewage pipeline to be opened, and acid liquor in the liquid storage pool 8 of the biological desulfurization tower is discharged.
The acid liquor produced by the system can also be used in a sewage treatment device. The controller closes the regulating valve 15 on the third pipeline to stop filling NH into the nutrient solution3Because of the desulfurization effect of the desulfurization bacteria, the pH value of the acid solution at the bottom of the desulfurization tower is gradually reduced, at the moment, if the pH value of the nutrient solution in the nutrient tank 3 is measured by the pH transmitter 18 to be less than 3, the controller opens the sewage discharge valve 14 on the sewage pipeline, the acid solution in the liquid storage tank 8 of the biological desulfurization tower is discharged and flows into the sewage treatment device for sewage treatment, and the acid solution required by the sewage treatment is provided for the sewage treatment device; if the pH value of the nutrient solution in the nutrient pool 3 measured by the pH transmitter 18 is not less than 3,the biological desulfurization tower continues to desulfurize the biogas to be treated.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the present invention, and it should be understood by those skilled in the art that various modifications and changes may be made without inventive efforts based on the technical solutions of the present invention.
Claims (3)
1. An intelligent biogas desulfurization coupling deodorization treatment system is characterized by comprising a fan (1), a biological desulfurization tower (2), a nutrition pool (3) and a controller;
the air inlet end of the fan (1) is connected with a biogas engineering workshop through a deodorization pipeline, the air outlet end of the fan (1) is connected with the air inlet end of a first pipeline, the air outlet end of the first pipeline is divided into two paths, one path is connected with the bottom of the biological desulfurization tower (2) through a second pipeline, and the other path is connected with the bottom of the nutrition pool (3) through a third pipeline;
the top of the biological desulfurization tower (2) is provided with a pressure transmitter (4) and an exhaust hole, the exhaust hole is connected with a user end through an exhaust pipeline, and a methane analysis device (5) is arranged on the exhaust pipeline; the biological desulfurization tower (2) is internally provided with a spraying device (6), a packing layer (7) and a liquid storage tank (8) from top to bottom in sequence, the spraying device (6) is connected with the liquid outlet end of a circulating pump (9) through a circulating pipeline, the liquid inlet end of the circulating pump (9) is connected with a nutrient tank (3) through a liquid inlet pipeline, the side wall of the liquid storage tank (8) is provided with an overflow port, an odor inlet, a methane inlet and a sewage port from top to bottom in sequence, wherein the overflow hole is communicated with the nutrient tank (3) through an overflow pipeline, the odor inlet is communicated with a second pipeline, the methane inlet is connected with a methane input end through a methane pipeline, and the sewage port is connected with a sewage treatment device through a sewage pipeline;
nutrient solution is stored in the nutrient pool (3), and a temperature transmitter (16), a liquid level transmitter (17) and a pH transmitter (18) are arranged on the nutrient pool (3);
a pressure stabilizing regulating valve (10) is arranged on the first pipeline, an electric regulating valve (11) and an odor flow transmitter (12) are arranged on the second pipeline, a regulating valve (15) is arranged on the third pipeline, a biogas flow transmitter (13) is arranged on the biogas pipeline, and a sewage valve (14) is arranged on the sewage pipeline;
the pressure transmitter (4), the temperature transmitter (16), the liquid level transmitter (17), the pH transmitter (18), the pressure stabilizing regulating valve (10), the electric regulating valve (11), the odor flow transmitter (12), the methane flow transmitter (13), the regulating valve (15) and the sewage discharge valve (14) are all connected with the controller.
2. An intelligent biogas desulfurization coupling deodorization treatment system according to claim 1, wherein the circulating pipeline, the exhaust pipeline and the biogas pipeline are provided with maintenance valves (19).
3. An intelligent biogas desulfurization coupling deodorization treatment system according to claim 1, characterized in that the blowdown valve (14) is provided as a ball valve.
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