A skid-mounted device for maintenance gas treatment

Abstract

The present invention discloses a skid-mounted equipment for the treatment of maintenance gas, including: a cooling device, a gas-liquid separation device, an integrated absorption tower, and a bio-catalyst tower. After the maintenance gas enters the cooling device, it is fully heat exchanged and cooled, and the maintenance gas is cooled to below 50°C before entering the gas-liquid separation device. The cooled maintenance gas is cooled again inside the gas-liquid separation device, so that the low-boiling-point organic matter in the maintenance gas is fully processed. A two-stage separation structure is arranged in the gas-liquid separation device, namely a coalescence module and a proton membrane separation module, so that the water vapor in the maintenance gas is effectively isolated. The maintenance gas after the water vapor is isolated enters the integrated absorption tower, and the gas-liquid phase flows in reverse, so that the maintenance gas and the absorption liquid fully react. The inside of the integrated absorption tower is filled with a filler of a certain thickness to increase the residence time of the maintenance gas in the absorption tower. Finally, the maintenance gas enters the bio-catalyst tower, and the remaining organic matter in the gas phase is forged and decomposed under the action of the bio-catalyst.

Description

Technical Field

[0001] The invention relates to the technical field of treatment of petroleum, petrochemical and pharmaceutical maintenance gas, and in particular to a skid-mounted device for treatment of maintenance gas. Background Art

[0002] In the production process of petroleum, petrochemical, pharmaceutical and refinery, regular maintenance of equipment is an indispensable link. During the maintenance period, a large amount of exhaust gas will be generated. These exhaust gases usually contain a variety of pollutants, such as sulfide, nitrogen oxides, volatile organic compounds (VOCs), particulate matter, etc.

[0003] At present, the treatment of equipment maintenance exhaust is relatively insufficient, resulting in a large amount of harmful gases being directly discharged into the atmosphere, causing serious pollution to the environment. In addition, the VOCs gases generated by equipment maintenance are of many types and complex components. Maintenance exhaust gases are often high temperature, high heat, and high water vapor. If such conditions are not pre-treated, they will have a great impact on VOCs treatment equipment. The existing treatment equipment for maintenance exhaust gas mainly adopts treatment methods including condensation recovery method, absorption method, direct combustion method, etc., which have the disadvantages of high energy consumption, high operating cost, high technical requirements, and difficult control. Summary of the invention

[0004] To solve the above technical problems, the present invention provides a skid-mounted device for repair gas treatment. In order to have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its only purpose is to present some concepts in a simple form as a preface to the detailed description that follows.

[0005] The present invention adopts the following technical solution:

[0006] The present invention provides a skid-mounted device for repair gas treatment, comprising:

[0007] The cooling device is used to cool the inspection gas by exchanging heat with a cooling medium, so that the temperature of the inspection gas is reduced to below 50°C;

[0008] A gas-liquid separation device is arranged at the output side of the cooling device, and is used to separate the gas and liquid of the maintenance gas after the temperature is reduced, and remove 90% of the water in the maintenance gas;

[0009] An integrated absorption tower is arranged at the output side of the gas-liquid separation device, and is used to process the inspection gas after gas-liquid separation to preliminarily remove organic matter in the inspection gas;

[0010] A biocatalyst tower is arranged at the output side of the integrated absorption tower, and is used to further process the inspection gas output by the integrated absorption tower to decompose organic substances in the inspection gas;

[0011] The control system is used to obtain the detection data of the sensor and send control instructions to the switch valve.

[0012] Furthermore, the cooling device includes: a heat exchanger, an inlet-side thermometer, an inlet-side pressure gauge and an outlet-side thermometer; the heat medium inlet of the heat exchanger is connected to the exhaust gas source pipeline for conveying maintenance gas, the heat medium outlet of the heat exchanger is connected to the gas-liquid separation device, the inlet-side thermometer and the inlet-side pressure gauge are arranged at the heat medium inlet of the heat exchanger, and the outlet-side thermometer is arranged at the heat medium outlet of the heat exchanger.

[0013] Furthermore, the gas-liquid separation device includes: a gas separation tower body, a condensing coil and a gas distributor; the condensing coil is arranged at the bottom of the inner cavity of the gas separation tower body, a waste gas inlet is arranged on the side of the gas separation tower body, and the gas distributor is arranged at the waste gas inlet.

[0014] Furthermore, the gas-liquid separation device also includes: a primary spray layer, a coalescing module, a secondary spray layer, a proton membrane separation module and a waste gas outlet; the primary spray layer is located above the condensing coil, the coalescing module is located above the primary spray layer, the secondary spray layer is located above the coalescing module, and the proton membrane separation module is located above the secondary spray layer; the waste gas outlet is arranged at the top of the gas separation tower body.

[0015] Furthermore, the gas-liquid separation device also includes: a remote liquid level gauge and a differential pressure gauge; the differential pressure gauge is arranged at the upper and lower ends of the coalescing module; and the remote liquid level gauge is arranged in the gas separation tower body.

[0016] Furthermore, the integrated absorption tower includes: a first-level spray tower body, a second-level spray tower body, a conveying pipeline, a solution storage tank, a connecting pipe and a connecting pipe valve; the first-level spray tower body and the second-level spray tower body are connected in series through the conveying pipeline, and two cavities are arranged in the solution storage tank, one of which is connected to the interior of the first-level spray tower body, and the other is connected to the interior of the second-level spray tower body, the two cavities are connected through the connecting pipe, and the connecting pipe valve is arranged on the connecting pipe.

[0017] Furthermore, processing modules are provided on both the first-stage spray tower body and the second-stage spray tower body; the processing modules include: a spray tower gas distributor, a spray tower packing layer, a spray tower spray layer, a spray tower coalescing unit, a spray tower circulating pump and a coalescing unit flushing device; the spray tower gas distributor is arranged on the first-stage spray tower body and the second-stage spray tower body, the spray tower packing layer is arranged inside the first-stage spray tower body and the second-stage spray tower body, the spray tower spray layer is arranged above the spray tower packing layer, the spray tower coalescing unit is arranged above the spray tower spray layer, the coalescing unit flushing device is arranged on the upper and lower sides of the spray tower coalescing unit, the liquid inlet of the spray tower circulating pump is connected to the solution storage tank, and the liquid outlet of the spray tower circulating pump is connected to the spray tower spray layer.

[0018] Furthermore, the bio-catalase tower includes: a bio-catalase tower body, a bio-catalase tower gas distributor, a bio-catalase tower aggregation unit, a bio-catalase bed, a nutrient solution spray layer, a bio-catalase tower outlet and a drain port; the bio-catalase tower gas distributor is arranged on the bio-catalase tower body, the bio-catalase bed is arranged above the bio-catalase tower aggregation unit, and the nutrient solution spray layer is arranged above the bio-catalase bed.

[0019] The beneficial effects brought by the present invention are as follows: the maintenance gas is processed in sequence by a cooling device, a gas-liquid separation device, a first-level spray tower body, a second-level spray tower body, and a bio-catalyzed enzyme tower, which has the advantages of low cost, good purification effect, no secondary pollution, easy control, and is suitable for the pretreatment of maintenance gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic structural diagram of a skid-mounted device for repair gas treatment according to the present invention;

[0022] Figure 2 It is a schematic structural diagram of the cooling device of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the gas-liquid separation device of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the integrated absorption tower of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the biological catalase tower of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the gas distributor, the spray tower gas distributor, and the biocatalyst tower gas distributor of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the primary spray layer, the secondary spray layer, the spray tower spray layer and the nutrient solution spray layer of the present invention. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be clear that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1-7 As shown, in some illustrative embodiments, a skid-mounted equipment for maintenance gas treatment is provided, which is mainly used to pre-treat the high-temperature, high-heat, and high-water-gas organic maintenance gas on site, and to cool, absorb, and decompose the maintenance gas to ensure that the maintenance gas is ultimately discharged in compliance with the standards. Specifically, the equipment includes: a cooling device 1, a gas-liquid separation device 2, an integrated absorption tower, and a bio-catalyst tower 5.

[0030] When the maintenance gas enters the cooling device 1, it is fully heat exchanged and cooled, and the maintenance gas temperature is reduced to below 50°C before entering the gas-liquid separation device 2. The cooled maintenance gas will be cooled again inside the gas-liquid separation device 2, so that the low-boiling point organic matter in the maintenance gas can be fully processed. A two-stage separation structure is set in the gas-liquid separation device 2, namely, a coalescing module and a proton membrane separation module, so that the water vapor in the maintenance gas can be effectively isolated, providing a good working condition for the next processing equipment. The maintenance gas after isolating the water vapor enters the integrated absorption tower, and the gas and liquid phases flow in reverse, so that the maintenance gas and the absorption liquid react fully. The inside of the integrated absorption tower is filled with a certain thickness of filler to increase the residence time of the maintenance gas in the absorption tower. The above design can fully remove the organic matter in the maintenance gas. Finally, the maintenance gas enters the bio-catalyst tower 5, and the remaining organic matter in the gas phase is decomposed by forging under the action of the bio-catalyst.

[0031] The above processes are coupled and used to effectively treat the maintenance gas and ultimately achieve emission standards.

[0032] The cooling device 1 is used to cool the maintenance gas through heat exchange with the cooling medium, so that the temperature of the maintenance gas is reduced to below 50°C. Specifically, in the cooling device 1, the cooling medium and the maintenance gas are heat exchanged, and the heat exchange goal is to cool the 165°C maintenance waste gas to 50°C. The flow parts used in the cooling device 1 need to have strong heat resistance and corrosion resistance, and a flow valve is set on the pipeline to achieve gas volume adjustment for the maintenance gas, thereby meeting the fluctuation of gas volume on site.

[0033] The cooling device 1 includes: a heat exchanger 101, an inlet side thermometer 102, an inlet side pressure gauge 103 and an outlet side thermometer 104. The heat exchanger 101 is a tubular heat exchanger, and the cooling method of the maintenance gas can be specified according to the actual working conditions on site, that is, if the temperature of the maintenance gas is greater than or equal to 120°C, the cooling method is air cooling, and the cooling medium is low-temperature gas. If the temperature of the maintenance gas is less than 120°C, the cooling method is water cooling, and the cooling medium is low-temperature water. The heat exchanger 101 can use multiple pipeline modules in series, and the number of modules can be adjusted according to the gas volume of the maintenance gas.

[0034] The heat medium inlet of the heat exchanger 101 is connected to the waste gas source pipeline 105 for conveying maintenance gas, and is connected by a hose, which can be quickly installed and removed. The heat medium outlet of the heat exchanger 101 is connected to the gas-liquid separation device 2, and the inlet side thermometer 102 and the inlet side pressure gauge 103 are arranged at the heat medium inlet of the heat exchanger 101, and the outlet side thermometer 104 is arranged at the heat medium outlet of the heat exchanger 101. The inlet side pressure gauge 103 is used to monitor the pressure of the inlet pipeline, match the pressure of the on-site maintenance equipment, and prevent damage to the equipment. The outlet side thermometer 104 is used to feedback data to control the outlet temperature to prevent the outlet temperature from being too high and affecting the subsequent processing equipment.

[0035] The gas-liquid separation device 2 is arranged at the output side of the cooling device 1, and is used to separate the gas and liquid of the maintenance gas after the temperature is reduced, and remove 90% of the water in the maintenance gas. The gas flow rate in the gas-liquid separation device 2 needs to be controlled below 0.5m / s to increase the residence time of the maintenance gas in the tower and ensure that the water content of the maintenance gas meets the requirements of the next processing unit. The flow-through parts inside the gas-liquid separation device 2 need to have certain heat resistance and corrosion resistance.

[0036] Specifically, the gas-liquid separation device 2 includes: a gas separation tower body 6, an exhaust gas inlet 7, a condensing coil 8, a gas distributor 9, a primary spray layer 10, a coalescing module 11, a secondary spray layer 12, a proton membrane separation module 13, an exhaust gas outlet 14, a remote liquid level gauge 15 and a differential pressure gauge 17.

[0037] The condensing coil 8 is arranged at the bottom of the inner cavity of the gas separation tower body 6, the side of the gas separation tower body 6 is provided with an exhaust gas inlet 7, and the gas distributor 9 is arranged at the exhaust gas inlet 7. The inspection gas enters the gas-liquid separation device 2 after being cooled by the cooling device 1, and is evenly distributed inside the gas separation tower body 6 through the gas distributor 9. The inspection gas moves upward and passes through the condensing coil 8, and the inspection gas is cooled and cooled for a second time, so that the low-boiling point organic matter in the inspection gas is fully processed. In this application, the cooling target of the condensing coil 8 is to reach a temperature of 25°C to meet the requirements of the next processing procedure.

[0038] The primary spray layer 10 is located above the condensing coil 8 , the coalescing module 11 is located above the primary spray layer 10 , the secondary spray layer 12 is located above the coalescing module 11 , and the proton membrane separation module 13 is located above the secondary spray layer 12 ; the exhaust gas outlet 14 is arranged at the top of the gas separation tower body 6 .

[0039] After the maintenance gas passes through the secondary cooling of the condensing coil 8, it continues to move upward in the tower and contacts the spray liquid sprayed from the primary spray layer 10, and then rises to the coalescing module 11. The coalescing module 11 performs the initial water vapor isolation to isolate most of the water vapor in the maintenance gas, and then continues to move upward in the tower and contacts the spray liquid sprayed from the secondary spray layer 12, and then rises to the proton membrane separation module 13. The proton membrane separation module 13 performs secondary water vapor isolation on the maintenance gas, and finally is discharged through the waste gas outlet 14 to enter the next process. A temperature monitor can be set on the upper part of the gas-liquid separation device 2 to monitor the waste gas outlet temperature.

[0040] The interior of the coalescing module 11 is filled with high-performance coalescing materials, which have a large specific surface area and good hydrophilicity. When the maintenance gas passes through the coalescing material, the water vapor molecules in the gas are physically adsorbed on the surface of the coalescing material, gradually forming tiny water droplets. As the water droplets continue to gather and reach a certain weight, they fall off under the action of gravity, thereby partially removing the water vapor in the maintenance gas. The proton membrane separation module 13 uses a proton membrane material with selective permeability. Under the action of water vapor, the proton membrane material allows water molecules to pass through, while other gas components are blocked, so that the water vapor in the maintenance gas is further removed. After being processed by the proton membrane separation module 13, the water vapor content in the maintenance gas has dropped to a low level.

[0041] The coalescence module 11 and the proton membrane separation module 13 form a two-stage water vapor isolation, so that the water vapor of the maintenance gas can be isolated by more than 90%, thereby improving the water vapor removal effect and providing a good working condition for the downstream processing equipment.

[0042] A differential pressure gauge 17 is provided at the upper and lower ends of the coalescing module 11 to monitor the pressure difference between the two ends in real time. The pressure difference data is an important indicator reflecting the change in the internal resistance of the coalescing module 11. When a certain amount of water droplets and other impurities accumulate inside the coalescing module 11, the internal resistance will increase, thereby increasing the pressure difference between the upper and lower ends. The differential pressure gauge 17 uploads the collected pressure difference data to the control system in real time. The control system obtains the data and compares it with the preset threshold. When the pressure difference value detected by the differential pressure gauge 17 reaches or exceeds the threshold, the control system determines that the coalescing module 11 needs to be cleaned, that is, it sends a corresponding control instruction to the cleaning device. After receiving the control instruction, the cleaning device will start the flushing and spraying program to clean the coalescing module 11.

[0043] The remote liquid level meter 15 is arranged in the gas separation tower body 6, and collects the liquid height data in the tower in real time and uploads it to the control system. When the liquid level exceeds the threshold, the control system controls the corresponding valve to open for drainage. When the liquid level is lower than the threshold, the control system controls the corresponding pump body to open for liquid replenishment.

[0044] The integrated absorption tower includes: a primary spray tower body 3, a secondary spray tower body 4, a delivery pipeline 304, a solution storage tank 20, a connecting pipe 26, and a connecting pipe valve 25. The primary spray tower body 3 and the secondary spray tower body 4 are both provided with a processing module, specifically, the processing module includes: a spray tower gas distributor 19, a spray tower packing layer 21, a spray tower spray layer 22, a spray tower coalescing unit 23, a spray tower circulation pump 24, and a coalescing unit flushing device 32. The integrated absorption tower is arranged at the output side of the gas-liquid separation device 2, and is used to process the maintenance gas after gas-liquid separation, so as to preliminarily remove organic matter in the maintenance gas.

[0045] The first-stage spray tower body 3 and the second-stage spray tower body 4 are connected in series through a delivery pipeline 304, that is, the integrated absorption tower of the present application is used in series with two towers to fully absorb the maintenance waste gas. The two towers share a solution storage tank 20, and two cavities are arranged in the solution storage tank 20, one of which is connected to the interior of the first-stage spray tower body 3, and the other cavity is connected to the interior of the second-stage spray tower body 4. The two cavities are connected through a connecting pipe 26, and a connecting pipe valve 25 is arranged on the connecting pipe 26.

[0046] The structural design of sharing the same solution storage tank 20 and two independent cavities in the tank allows the integrated absorption tower of the present application to select one solvent or two solvents according to specific working conditions, thereby making the integrated absorption tower have multiple options for the working conditions of the maintenance gas, and can be well applied to the treatment of the maintenance gas. When using one solvent, the solvent volume in the two cavities is balanced by opening and closing the connecting pipe valve 25. When using two solvents, the connecting pipe valve 25 is in a normally closed state. In addition, the solvent in the solvent storage tank 20 needs to meet the circulation volume of the two towers, and the circulation volume of the two towers meets the liquid-gas ratio variation in the range of 4-10.

[0047] The spray tower gas distributor 19 is arranged on the side wall of the first-stage spray tower body 3 and the second-stage spray tower body 4. Its main function is to ensure that the maintenance gas can be evenly distributed when entering the spray tower, and to avoid the formation of short-circuit flow or vortex in the tower, thereby improving the treatment efficiency of the spray tower. The spray tower packing layer 21 is arranged inside the first-stage spray tower body 3 and the second-stage spray tower body 4, and is located above the spray tower gas distributor 19. The packing layer provides a large surface area, so that the gas and the spray liquid can be fully in contact, thereby improving the removal efficiency of the maintenance waste gas.

[0048] The spray tower spray layer 22 is arranged above the spray tower packing layer 21, and the spray tower coalescing unit 23 is arranged above the spray tower spray layer 22. The spray tower coalescing unit 23 is used to collect and remove tiny droplets in the gas to improve the cleanliness of the gas. The coalescing unit flushing device 32 is arranged on the upper and lower sides of the spray tower coalescing unit 23. The coalescing unit flushing device 32 is used to regularly clean the spray tower coalescing unit 23 to prevent the spray tower coalescing unit 23 from reducing its efficiency due to the accumulation of too many pollutants. The flushing operation can remove dirt and blockages on the spray tower coalescing unit 23 to keep it in good working condition.

[0049] After water vapor separation, the inspection gas firstly enters the tower evenly through the spray tower gas distributor 19 on the first-stage spray tower body 3 and moves upward. At the same time, the spray liquid sprayed by the spray tower spray layer 22 moves downward and fully reacts with the inspection gas in the spray tower packing layer 21 located in the middle of the tower body. In this process, the inspection gas and the spray liquid in the upper part of the tower body move in the opposite direction, the interior of the tower body is in a turbulent state as a whole, the gas and liquid are fully mixed, and the reaction is complete. A spray tower coalescing unit 23 is set at the top of the tower body to isolate the water in the gas phase in the first-stage spray tower body 3 to avoid excessive water in the gas phase, which causes an imbalance in the liquid phase in the next process.

[0050] The maintenance gas discharged from the first-stage spray tower body 3 enters the second-stage spray tower body 4 through the conveying pipe 304, and evenly enters the tower through the spray tower gas distributor 19 on the second-stage spray tower body 4 and moves upward. At the same time, the spray liquid sprayed by the spray tower spray layer 22 in the second-stage spray tower body 4 moves downward and fully reacts with the maintenance gas in the spray tower packing layer 21. A spray tower condensation unit 23 is arranged on the top of the second-stage spray tower body 4 to isolate the moisture in the gas phase in the second-stage spray tower body 4.

[0051] The first-stage spray tower body 3 and the second-stage spray tower body 4 are designed in the form of gas-liquid countercurrent flow, and a spray tower packing layer 21 and a spray tower spray layer 22 are added in the tower. The flow rate of the gas in the tower is below 0.5m / s, thereby ensuring the residence time and reaction efficiency of the maintenance gas in the tower and ensuring the removal rate of organic matter in the maintenance gas. In addition, the first-stage spray tower body 3 and the second-stage spray tower body 4 can be adjusted according to the specific working conditions of the maintenance gas. For example, if the gas volume and concentration of the maintenance gas are relatively low, a single tower can be used for absorption treatment, otherwise two towers are connected in series for absorption treatment.

[0052] The spray volume of the spray layer 22 of the spray tower can be adjusted according to the organic content in the inspection gas to ensure that the liquid-gas ratio in the tower is not less than 6. The absorbent used in the spray layer 22 of the spray tower is aimed at the overall removal of non-methane. If one solvent is used for absorption, the absorption efficiency is above 70%. The use of double towers in series for treatment can ensure that the absorption refining rate is above 97%. If dual-purpose solvent absorption is used, the comprehensive treatment rate is above 97%.

[0053] The liquid inlet of the spray tower circulation pump 24 is connected to the solution storage tank 20, and the liquid outlet of the spray tower circulation pump 24 is connected to the spray tower spray layer 22. The absorption liquid falling from the spray tower spray layer 22 enters the solution storage tank 20, and is then transported back to the spray tower spray layer 22 through the spray tower circulation pump 24 to achieve recycling absorption.

[0054] The bio-catalase tower 5 is arranged at the output side of the integrated absorption tower, and is used to further process the inspection gas output by the integrated absorption tower, that is, the inspection gas discharged from the integrated absorption tower finally enters the bio-catalase tower 5 to decompose the organic matter in the inspection gas. Specifically, the remaining organic matter in the gas phase is forged and decomposed under the action of the bio-catalase, and the bio-catalase tower 5 includes: a bio-catalase tower body 51, a bio-catalase tower gas distributor 34, a bio-catalase tower agglomeration unit 35, a bio-catalase bed 36, a nutrient solution spray layer 37, a bio-catalase tower outlet 38 and a drain port 39.

[0055] The bio-catalase tower gas distributor 34 is arranged on the bio-catalase tower body 51, the bio-catalase bed 36 is arranged above the bio-catalase tower coalescing unit 35, and the nutrient solution spray layer 37 is arranged above the bio-catalase bed 36. The inspection gas is evenly distributed in the tower from the bio-catalase tower gas distributor 34 on the bio-catalase tower body 51, and the gas moves upward, enters the bio-catalase tower coalescing unit 35 for water vapor isolation, and then enters the bio-catalase bed 36. The short-chain organic matter of the organisms in the inspection gas is adsorbed and decomposed in the bio-catalase bed 36 to ensure that the best inspection gas meets the emission standards. At the same time, the nutrient solution spray layer 37 sprays the bio-catalase nutrient solution to regularly supplement the nutrition for the bio-catalase bed 36, increase the growth of bio-catalase and effective bacteria, and increase the service life of the bio-catalase bed.

[0056] The gas flow rate of the bio-catalase tower 5 needs to be controlled below 0.5 m / s to ensure the residence time of the inspection gas in the tower; at the same time, the height of the bio-catalase bed 36 needs to meet the time for the catalase to decompose organic matter.

[0057] Biocatalyst mainly decomposes short-chain alkane organic matter, and its decomposition efficiency is above 15%. Compared with conventional activated carbon projects, biocatalyst has a longer application cycle. Activated carbon adsorption is mainly based on the size of its iodine value, while biocatalyst is based on the number of biocatalysts and effective bacteria. By regularly spraying biocatalyst nutrient solution, a good growth environment is provided for biocatalyst and effective bacteria, extending its use cycle.

[0058] The control system is used to obtain the detection data of the sensor and send control instructions to the switch valve.

[0059] For example, the control system obtains the detection data of the inlet side thermometer 102, the inlet side pressure gauge 103, the outlet side thermometer 104, the remote liquid level gauge 15, and the differential pressure gauge 17, and sends control instructions to the connecting pipe valve 25 and the spray tower circulation pump 24.

[0060] The control system can use PLC and adopt remote or automatic control. For example, the temperature and pressure detection of the inlet and outlet of the cooling device are all controlled by remote transmission, and the switch valves on the pipelines in the system are remote or electric switch valves, which can reduce the number of on-site control points for personnel, increase the degree of system automation, and reduce labor input.

[0061] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A skid-mounted device for maintenance gas treatment, characterized in that: include: The cooling device is used to cool the inspection gas by exchanging heat with a cooling medium, so that the temperature of the inspection gas is reduced to below 50°C; A gas-liquid separation device is arranged at the output side of the cooling device, and is used to separate the gas and liquid of the maintenance gas after the temperature is reduced, and remove 90% of the water in the maintenance gas; An integrated absorption tower is arranged at the output side of the gas-liquid separation device, and is used to process the inspection gas after gas-liquid separation to preliminarily remove organic matter in the inspection gas; A biocatalyst tower is arranged at the output side of the integrated absorption tower, and is used to further process the inspection gas output by the integrated absorption tower to decompose organic matter in the inspection gas; The control system is used to obtain the detection data of the sensor and send control instructions to the switch valve.

2. The skid-mounted equipment for treatment of maintenance gas according to claim 1, characterized in that: The cooling device includes: a heat exchanger, an inlet-side thermometer, an inlet-side pressure gauge and an outlet-side thermometer; the heat medium inlet of the heat exchanger is connected to the exhaust gas source pipeline for conveying maintenance gas, the heat medium outlet of the heat exchanger is connected to the gas-liquid separation device, the inlet-side thermometer and the inlet-side pressure gauge are arranged at the heat medium inlet of the heat exchanger, and the outlet-side thermometer is arranged at the heat medium outlet of the heat exchanger.

3. The skid-mounted equipment for treatment of maintenance gas according to claim 2, characterized in that: The gas-liquid separation device comprises: a gas separation tower body, a condensing coil and a gas distributor; the condensing coil is arranged at the bottom of the inner cavity of the gas separation tower body, a waste gas inlet is arranged on the side of the gas separation tower body, and the gas distributor is arranged at the waste gas inlet.

4. The skid-mounted equipment for treatment of maintenance gas according to claim 3, characterized in that: The gas-liquid separation device also includes: a primary spray layer, a coalescing module, a secondary spray layer, a proton membrane separation module and a waste gas outlet; the primary spray layer is located above the condensing coil, the coalescing module is located above the primary spray layer, the secondary spray layer is located above the coalescing module, and the proton membrane separation module is located above the secondary spray layer; the waste gas outlet is arranged at the top of the gas separation tower body.

5. The skid-mounted equipment for treatment of maintenance gas according to claim 4, characterized in that: The gas-liquid separation device further comprises: a remote level gauge and a differential pressure gauge; the differential pressure gauge is arranged at the upper and lower ends of the coalescing module; the remote level gauge is arranged in the gas separation tower body.

6. The skid-mounted equipment for treatment of service gas according to claim 5, characterized in that: The integrated absorption tower includes: a first-level spray tower body, a second-level spray tower body, a conveying pipeline, a solution storage tank, a connecting pipe and a connecting pipe valve; the first-level spray tower body and the second-level spray tower body are connected in series through the conveying pipeline, two cavities are arranged in the solution storage tank, one of the cavities is connected to the interior of the first-level spray tower body, and the other cavity is connected to the interior of the second-level spray tower body, the two cavities are connected through the connecting pipe, and the connecting pipe valve is arranged on the connecting pipe.

7. The skid-mounted equipment for treatment of maintenance gas according to claim 6, characterized in that: The first-stage spray tower body and the second-stage spray tower body are both provided with processing modules; the processing modules include: a spray tower gas distributor, a spray tower packing layer, a spray tower spray layer, a spray tower coalescing unit, a spray tower circulating pump and a coalescing unit flushing device; the spray tower gas distributor is arranged on the first-stage spray tower body and the second-stage spray tower body, the spray tower packing layer is arranged inside the first-stage spray tower body and the second-stage spray tower body, the spray tower spray layer is arranged above the spray tower packing layer, the spray tower coalescing unit is arranged above the spray tower spray layer, the coalescing unit flushing device is arranged on the upper and lower sides of the spray tower coalescing unit, the liquid inlet of the spray tower circulating pump is connected to the solution storage tank, and the liquid outlet of the spray tower circulating pump is connected to the spray tower spray layer.

8. The skid-mounted equipment for treatment of maintenance gas according to claim 7, characterized in that: The bio-catalase tower includes: a bio-catalase tower body, a bio-catalase tower gas distributor, a bio-catalase tower aggregation unit, a bio-catalase bed, a nutrient solution spray layer, a bio-catalase tower outlet and a drain port; the bio-catalase tower gas distributor is arranged on the bio-catalase tower body, the bio-catalase bed is arranged above the bio-catalase tower aggregation unit, and the nutrient solution spray layer is arranged above the bio-catalase bed.

Images