A device for treating VOCs exhaust gas

Abstract

The utility model provide a kind of suitable for VOCs waste gas treatment device for the deficiency of prior art, including setting up breather valve and emergency relief valve at the top of production device, the output of the breather valve and emergency relief valve is equipped with first solenoid valve, the output of all the first solenoid valve is communicated with communicating pipe communication;The output of the communicating pipe is sequentially connected with collecting device and booster frame, the booster frame is equipped with booster equipment for the gas in communicating pipe is boosted, and the output of booster frame is communicated with boiler, incinerator and torch respectively through dispersing pipe;Second solenoid valve is equipped on the connecting pipe of the dispersing pipe and boiler, incinerator, torch.The utility model can realize the collection of VOCs waste gas, become the fuel of enterprise internal boiler, incinerator, torch after boosting, reduce the use amount of conventional fuel to boiler and other equipment on the one hand. On the other hand, the discharge amount of VOCs waste gas to atmosphere is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of VOCs waste gas treatment technology, specifically relating to a device suitable for VOCs waste gas treatment. Background Technology

[0002] VOCs are volatile organic compounds, and current mainstream treatment methods include water dissolution treatment, combustion destruction treatment, and recycling and cooling treatment. However, in the chemical industry, especially in coal chemical enterprises, the production equipment is complex, and the types of waste emitted are numerous, with complex compositions and large concentration variations. VOCs mainly originate from the fugitive emissions of exhaust gas from the breather valves and emergency relief valves on the top of atmospheric pressure storage tanks in tank farms.

[0003] Existing technologies are insufficient to completely recover and utilize this type of waste gas. On the one hand, this leads to excessive VOCs content in the atmosphere, causing environmental pollution and posing environmental safety hazards. On the other hand, unrecovered VOCs waste gas is wasted as a usable resource, failing to create additional value for enterprises and not meeting the industry's needs for energy conservation and efficient resource utilization. Targeted technologies are urgently needed to solve these problems. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a VOCs waste gas treatment device, including a production device. The top of the production device is equipped with a breather valve and an emergency relief valve. The output ends of both the breather valve and the emergency relief valve are equipped with first solenoid valves, and the output ends of all first solenoid valves are connected to a connecting pipe. The output end of the connecting pipe is sequentially connected to a collection device and a pressurizing frame. The pressurizing frame contains a pressurizing device for pressurizing the gas in the connecting pipe, and the output end of the pressurizing frame is connected to a boiler, an incinerator, and a flare via a dispersing pipe. A second solenoid valve is installed on the connecting pipes of the dispersing pipe to the boiler, incinerator, and flare.

[0005] Furthermore, the pressurization frame is equipped with one of the following: a Roots blower, a vacuum pump, or a compressor.

[0006] Furthermore, the pressurizing frame is equipped with at least two of the following as pressurizing devices: a Roots blower, a vacuum pump, or a compressor. The pressurizing frame is equipped with pressurizing input pipes and pressurizing output pipes that are connected to the pressurizing devices one by one. Each pressurizing input pipe is equipped with a third solenoid valve. The input ends of the pressurizing input pipes are interconnected and then connected to the output end of the collecting device. The output ends of the pressurizing output pipes are interconnected and then connected to the input end of the dispersing pipe.

[0007] Furthermore, the inner walls of the connecting pipe, collecting device, pressurizing frame, and dispersing pipe are all provided with an anti-corrosion layer.

[0008] Furthermore, the collecting device is equipped with an electronic barometer. The signal output terminal of the electronic barometer is connected to the PLC control system. The control signal output terminal of the PLC control system is connected to the boosting equipment installed in the boosting frame and to the control signal input terminal of each second solenoid valve.

[0009] The advantages of this invention are as follows: This invention can collect and pressurize VOCs waste gas to serve as fuel for boilers, incinerators, and flares within enterprises. On the one hand, it reduces the amount of conventional fuel used in boilers and other equipment, lowering energy consumption and cost, and improving economic efficiency. On the other hand, it significantly reduces the emission of VOCs waste gas into the atmosphere, solving the air pollution problem caused by the inability to completely recover and utilize traditional VOCs waste gas, eliminating environmental safety hazards, and meeting green environmental protection requirements. Attached Figure Description

[0010] Figure 1 The figure shown is a three-dimensional structural schematic diagram of this utility model;

[0011] Figure 2 The figure shown is a front view of the overall structure of this utility model;

[0012] Figure 3 The diagram shown is a schematic diagram of the waste gas treatment technology of this utility model.

[0013] In the diagram: 1. Production unit; 2. Breathing valve; 3. Emergency relief valve; 4. Connecting pipe; 5. Collection device; 6. Pressure boosting frame; 7. Dispersion pipe; 8. Boiler; 9. Incinerator; 10. Flare. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0015] This utility model provides an exemplary device for treating VOCs waste gas, such as... Figure 1 and Figure 2As shown: The device includes a production unit 1. A breather valve 2 and an emergency relief valve 3 are installed at the top of the production unit 1. Both the breather valve 2 and the emergency relief valve 3 have a first solenoid valve at their output ends. The output ends of all the first solenoid valves are connected to a connecting pipe 4. A collection device 5 and a pressurizing frame 6 are sequentially connected to the output end of the connecting pipe 4. One-way valves can be added to the input and output ends of the collection device 5 as needed to prevent the collected waste gas from flowing backwards. The pressurizing frame 6 contains a pressurizing device to pressurize the gas in the connecting pipe 4. The output end of the pressurizing frame 6 is connected to a boiler 8, an incinerator 9, and a flare 10 via a dispersing pipe 7. A second solenoid valve is installed on the connecting pipes of the dispersing pipe 7 to the boiler 8, incinerator 9, and flare 10.

[0016] like Figure 3 As shown, the operation of this device is as follows: VOCs waste gas generated in production unit 1 is discharged through the breather valve 2 and emergency relief valve 3 at the top. Breather valve 2 is used for waste gas discharge under normal operating conditions of production unit 1, while emergency relief valve 3 is used for waste gas discharge under emergency conditions such as overpressure. The first solenoid valve at the output end of both valves can control the opening and closing of their connection to the connecting pipe 4, ensuring precise entry of waste gas into the connecting pipe 4. For example, under normal conditions, only the first solenoid valve corresponding to breather valve 2 is open; in an emergency, the first solenoid valve corresponding to emergency relief valve 3 is opened, achieving precise control of waste gas emissions under different operating conditions and preventing disorderly emissions. Afterwards, the connecting pipe 4 transports the waste gas to the collection device 5 for centralized collection, avoiding the need for separate treatment of small amounts of waste gas and improving treatment efficiency. It also provides a stable source of waste gas for subsequent pressurization and treatment processes. After a certain amount of waste gas is collected in the collection device 5, it is introduced into the pressurization frame 6. The waste gas, after being pressurized by the pressurization equipment within the pressurization frame 6, enters at least one of the following through the dispersion pipe 7: boiler 8, incinerator 9, and flare 10. Specifically, the connection between the dispersion pipe 7 and the second solenoid valve at the connection point of the boiler 8, incinerator 9, or flare 10 is controlled. During actual treatment, one or more second solenoid valves can be opened according to the waste gas treatment volume and equipment operating status to distribute the waste gas to the corresponding treatment equipment, ensuring timely and efficient treatment of the waste gas and avoiding processing stagnation due to excessive load or malfunction of a single device.

[0017] This invention enables the collection and pressurization of VOCs waste gas, which can then be used as fuel for boilers, incinerators, and flares within enterprises. On one hand, it reduces the amount of conventional fuel used in boilers and other equipment, lowering energy consumption and costs, and improving economic efficiency. On the other hand, it significantly reduces the amount of VOCs waste gas emitted into the atmosphere, solving the air pollution problem caused by the inability to completely recover and utilize traditional VOCs waste gas, eliminating environmental safety hazards, and meeting green environmental protection requirements.

[0018] This utility model provides an example of a pressure boosting frame, wherein the pressure boosting frame 6 is equipped with one of a Roots blower, a vacuum pump, or a compressor.

[0019] This utility model provides an exemplary pressure boosting frame 6, which is equipped with at least two of the following as pressure boosting devices: a Roots blower, a vacuum pump, or a compressor. The pressure boosting frame 6 is equipped with a pressure boosting input pipe and a pressure boosting output pipe that are connected to the pressure boosting devices one by one. Each pressure boosting input pipe is equipped with a third solenoid valve. The input ends of the pressure boosting input pipes are interconnected and then connected to the output end of the collecting device 5. The output ends of the pressure boosting output pipes are interconnected and then connected to the input end of the dispersing pipe 7.

[0020] This setting allows for the selection of appropriate booster equipment to pressurize the exhaust gas based on the pressure requirements of boiler 8, incinerator 9, and flare 10 by adjusting the opening and closing of the third solenoid valve.

[0021] In this invention, an anti-corrosion layer is provided on the inner walls of the connecting pipe 4, the collecting device 5, the pressurizing frame 6, and the dispersing pipe 7. This design can resist corrosive components in the exhaust gas and ensure stable operation of the device.

[0022] This utility model provides an exemplary collection device 5, which is equipped with an electronic barometer. The signal output terminal of the electronic barometer is connected to the signal of a PLC control system. The control signal output terminal of the PLC control system is connected to the signal of a booster device installed in a booster frame 6, and to the signal of the control signal input terminal of each second solenoid valve.

[0023] At this time, the electronic barometer monitors the pressure of the exhaust gas in the collection device 5 in real time. When the pressure reaches the preset threshold, the PLC controls the booster device in the booster box 6 to start, boosting the exhaust gas in the collection device 5 and delivering it to at least one of the boiler 8, incinerator 9, and flare 10 for exhaust gas treatment. The corresponding second solenoid valve is opened to allow the exhaust gas to smoothly enter the treatment mechanism.

[0024] It should be noted and understood that various modifications and improvements can be made to the present invention as described in the above description without departing from the spirit and scope of the claims. Therefore, the scope of the claimed technical solutions is not limited to any specific exemplary teachings given.

Claims

1. A device for treating VOCs waste gas, comprising a production unit (1), characterized in that, The production device (1) is equipped with a breather valve (2) and an emergency relief valve (3) at its top. The output ends of the breather valve (2) and the emergency relief valve (3) are equipped with first solenoid valves. The output ends of all the first solenoid valves are connected to the connecting pipe (4). The output end of the connecting pipe (4) is connected to a collection device (5) and a pressurizing frame (6) in sequence. The pressurizing frame (6) is equipped with a pressurizing device to pressurize the gas in the connecting pipe (4). The output end of the pressurizing frame (6) is connected to the boiler (8), the incinerator (9) and the flare (10) respectively through the dispersion pipe (7). The connecting pipes of the dispersion pipe (7) to the boiler (8), the incinerator (9) and the flare (10) are all equipped with second solenoid valves.

2. The VOCs waste gas treatment device according to claim 1, characterized in that, The pressure booster frame (6) is equipped with one of the following: a Roots blower, a vacuum pump, or a compressor.

3. The VOCs waste gas treatment device according to claim 1, characterized in that, The pressurizing frame (6) is equipped with at least two of the following as pressurizing devices: a Roots blower, a vacuum pump, or a compressor. The pressurizing frame (6) is equipped with a pressurizing input pipe and a pressurizing output pipe that are connected to the pressurizing devices one by one. The pressurizing input pipe is equipped with a third solenoid valve. The input ends of the pressurizing input pipes are connected to each other and then connected to the output end of the collecting device (5). The output ends of the pressurizing output pipes are connected to each other and then connected to the input end of the dispersing pipe (7).

4. The VOCs waste gas treatment device according to claim 1, characterized in that, The inner walls of the connecting pipe (4), the collecting device (5), the pressurizing frame (6), and the dispersing pipe (7) are all provided with anti-corrosion layers.

5. The VOCs waste gas treatment device according to claim 1, characterized in that, The collecting device (5) is equipped with an electronic barometer. The signal output terminal of the electronic barometer is connected to the PLC control system. The control signal output terminal of the PLC control system is connected to the boosting equipment in the boosting frame (6) and to the control signal input terminal of each second solenoid valve.

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