Safe and controllable combustible tail gas treatment device

Abstract

The utility model discloses a safe and controllable flammable tail gas treatment device, which relates to the technical field of tail gas treatment, and comprises a main pipeline, the front end of the main pipeline is respectively connected with a first valve, a second valve and a third valve; the booster fan is arranged in the middle of the main pipeline, an emergency torch conveying pipe is arranged on the front side of the outer portion of the main pipeline, a first adjusting valve is arranged at the upper end of the emergency torch conveying pipe, the booster fan is electrically connected with the first adjusting valve, and when the fan breaks down and stops running or a follow-up workshop section accident occurs, linkage starting is conducted, and the emergency torch conveying pipe is started. The first regulating valve is automatically opened, the second regulating valve is closed, combustible tail gas is emergently sent to an accident torch for treatment, and the whole system is in a safe state.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a safe and controllable combustible tail gas treatment device. Background Technique

[0002] During the production process of factories, due to the different components of combustible gases produced by different devices, the components are complex after mixing, and the pressures are different, making it difficult to regulate and treat. The tail gas of traditional devices generally adopts the incineration method. However, due to the difficulty in regulating the components of the tail gas before incineration such as oxygen content and the lack of real-time monitoring, safety problems are likely to occur. Therefore, we propose a safe and controllable combustible tail gas treatment device to solve the problems mentioned above. Content of the Utility Model

[0003] The purpose of the utility model is to provide a safe and controllable combustible tail gas treatment device to solve the problems mentioned in the above background technique, that is, during the production process of factories, due to the different components of combustible gases produced by different devices, the components are complex after mixing, and the pressures are different, making it difficult to regulate and treat. The tail gas of traditional devices generally adopts the incineration method. However, due to the difficulty in regulating the components of the tail gas before incineration such as oxygen content and the lack of real-time monitoring, safety problems are likely to occur.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a safe and controllable combustible tail gas treatment device, including a main pipeline, and the front end of the main pipeline is respectively connected with a first valve, a second valve and a third valve;

[0005] It further includes:

[0006] A booster fan, which is arranged in the middle of the main pipeline. An accident flare pipeline is arranged on the front side of the outer part of the main pipeline. A first regulating valve is arranged at the upper end of the accident flare pipeline, and the booster fan is electrically connected with the first regulating valve. A second regulating valve is arranged on the outer part of the main pipeline, and the second regulating valve is located in front of the booster fan. A pressure transformer is arranged on the outer part of the main pipeline, and the pressure transformer is located behind the second regulating valve. Valve groups are arranged at both the inlet and outlet of the booster fan. An exhaust chimney is arranged behind the main pipeline.

[0007] Preferably, a low-pressure nitrogen pipeline is arranged at the front end of the booster fan.

[0008] Preferably, a replacement drain is arranged at the outlet of the booster fan.

[0009] Preferably, a monitoring panel is arranged on the outlet pipeline of the booster fan.

[0010] Preferably, a sampling port is arranged behind the main pipeline, and the sampling port is located behind the monitoring panel.

[0011] Preferably, a solenoid valve group is arranged behind the main pipeline, and the solenoid valve group is located behind the monitoring panel.

[0012] Preferably, a flame arrester is arranged behind the main pipeline, a combustion device is arranged behind the flame arrester, and the exhaust pipe is connected to the combustion device.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The safe and efficient treatment method includes an accident flare, a booster fan, a valve group, a monitoring panel, a solenoid valve group and a combustion device, which is mainly used to improve the efficiency and safety of combustible tail gas treatment. This method has a short process, low investment and obvious effect. It can not only treat the difficult-to-treat combustible tail gas with multiple components and different pressures after mixing at low cost, but also improve the surrounding ecological environment problems. When the combustible tail gas sent by the system is in negative pressure, it will display ≤ 0 kPa on the pressure transformer, the booster fan will stop running in a chain reaction, and at the same time, the inlet regulating valve will be closed and the valve will be closed to ensure that the whole system is in a safe state.

[0015] 2. The first valve, the second valve and the third valve respectively transport low-pressure combustible tail gas, medium-pressure combustible tail gas and high-pressure combustible tail gas. The device installs a pipeline leading to the accident flare on the main pipeline of combustible tail gas under different positive pressures, and a first regulating valve is arranged on the pipeline leading to the accident flare, which is interlocked with the variable-frequency booster fan. When the fan fails to operate or an accident occurs in the subsequent section, it will be started in a chain reaction, the first regulating valve will be automatically opened, the second regulating valve will be closed, and the combustible tail gas will be sent to the accident flare for emergency treatment to ensure that the whole system is in a safe state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the first half of the overall structure of the present utility model;

[0018] Figure 3 is a schematic diagram of the second half of the overall structure of the present utility model;

[0019] In the figure: 1, the first valve; 2, the second valve; 3, the third valve; 4, the first regulating valve; 5, the accident flare delivery pipe; 6, the second regulating valve; 7, the booster fan; 8, the replacement drain; 9, the valve group; 10, the monitoring panel; 11, the sampling port; 12, the solenoid valve group; 13, the flame arrester; 14, the combustion device; 15, the exhaust pipe; 16, the pressure transformer; 17, the low-pressure nitrogen pipeline; 18, the main pipeline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Please refer to Figures 1-3 , an embodiment provided by the present utility model: a safe and controllable combustible tail gas treatment device, including a main pipeline 18, the front end of the main pipeline 18 is respectively connected with a first valve 1, a second valve 2 and a third valve 3;

[0022] It further includes:

[0023] A booster fan 7, which is arranged in the middle of the main pipeline 18. An accident flare transmission pipe 5 is arranged on the front side of the outside of the main pipeline 18. A first regulating valve 4 is arranged at the upper end of the accident flare transmission pipe 5, and the booster fan 7 and the first regulating valve 4 are electrically connected to each other. A second regulating valve 6 is arranged on the outside of the main pipeline 18, and the second regulating valve 6 is located in front of the booster fan 7. A pressure transformer 16 is arranged on the outside of the main pipeline 18, and the pressure transformer 16 is located behind the second regulating valve 6. Valve groups 9 are arranged at both the inlet and outlet of the booster fan 7. An exhaust chimney 15 is arranged behind the main pipeline 18.

[0024] A display is arranged on one side of the pressure transformer 16, which can display the pressure value. When the combustible tail gas sent by the system is in negative pressure, it will display ≤0 kPa on the pressure transformer 16, and the booster fan 7 will be stopped by interlock. At the same time, the inlet regulating valve will be closed and the valve will be closed to ensure that the whole system is in a safe state.

[0025] Please refer to Figure 2 , a low-pressure nitrogen pipeline 17 is arranged at the front end of the booster fan 7, which is used for nitrogen replacement during maintenance, start-up and shutdown, or when the combustible gas is close to negative pressure. The nitrogen pipeline is opened to prevent negative pressure.

[0026] Please refer to Figure 3 , a replacement drain 8 is arranged at the outlet of the booster fan 7, which is beneficial to regularly discharge the moisture in the system pipeline, ensure the long-term stable operation of instruments and other equipment, and is used for regular drainage of the system pipeline.

[0027] Please refer to Figure 3 , a monitoring panel 10 is arranged on the outlet pipeline of the booster fan 7. The monitoring panel 10 displays the data monitored by the gas content on-line monitoring system, which is beneficial to the on-line monitoring of each component before the combustible tail gas enters the combustion device 14, facilitates the regulation of the intake parameters and stabilizes the combustion.

[0028] Please refer to Figure 3, a sampling port 11 is provided behind the main pipeline 18, and the sampling port 11 is located behind the monitoring panel 10, preventing the influence caused by inaccurate detection or malfunction of the gas content on-line monitoring system, and further calibrating the detection of the combustible tail gas content.

[0029] Please refer to Figure 3 , a solenoid valve group 12 is provided behind the main pipeline 18, and the solenoid valve group 12 is located behind the monitoring panel 10, and is used for automatically interlocking and cutting off when the system makes an emergency stop or the combustion device 14 operates abnormally, ensuring the safe and stable operation of the whole system.

[0030] Please refer to Figure 3 , a flame arrester 13 is provided behind the main pipeline 18, a combustion device 14 is provided behind the flame arrester 13, and the exhaust stack 15 is connected to the combustion device 14. The setting of the flame arrester 13 is beneficial to preventing backfire when the combustion device 14 fails or makes an emergency stop, ensuring the safe and stable operation of the system.

[0031] Working principle: Implementation plan for low-pressure working conditions:

[0032] Step 1: Light the pilot light of the combustion device 14, open the first valve 1 to introduce the combustible device tail gas, observe the pressure situation in the pressure transformer 16, and when the system is close to negative pressure, it is necessary to open the low-pressure nitrogen pipeline 17, otherwise it is not necessary;

[0033] Step 2: When the pressure is positive, open the booster fan 7, boost the combustible tail gas and send it to the subsequent process, and wait for the combustion device 14 to slowly burn and heat up;

[0034] Step 3: When the outlet pressure of the booster fan 7 is stable at a certain pressure, the gas content on-line monitoring system feeds back the data to the monitoring panel 10, observe the changes of the components of the data displayed on the monitoring panel 10, and when the parameters are stable within the combustible range, turn on the main burner of the combustion device 14 to burn;

[0035] Step 4: After the system operates stably, regularly open the replacement drain 8 valve to drain the moisture in the system pipeline;

[0036] Step 5: Keep the middle device behind the combustion device 14 unobstructed, and discharge the tail gas up to standard through the exhaust stack 15;

[0037] Step 6: When the system fails or an emergency occurs, the first regulating valve 4 is interlocked to open, the second regulating valve 6 is interlocked to close, and the combustible tail gas is transported to the emergency flare for treatment and discharge through the emergency flare transfer pipe 5.

[0038] Step 7: When the combustible tail gas shows ≤0 kPa in the pressure transformer 16, interlock to stop the booster fan 7, and at the same time close the second regulating valve 6 at the inlet and the first valve 1 to make the whole system make an emergency stop.

[0039] Medium-pressure operating condition implementation plan:

[0040] Step 1: Light the pilot flame of the combustion device 14, and open the second valve 2 to introduce the tail gas of the combustible device;

[0041] Step 2: Open the booster fan 7, boost the pressure of the combustible tail gas and send it to the subsequent process, and wait for the combustion device 14 to slowly burn and heat up;

[0042] Step 3: When the outlet pressure of the booster fan 7 stabilizes at a certain pressure, the gas content on-line monitoring system feeds back the data to the monitoring panel 10, observe the changes in the components of the data displayed on the monitoring panel 10, and when the parameters are stable within the combustible range, turn on the main burner of the combustion device 14 to burn;

[0043] Step 4: After the system operates stably, regularly open the replacement drain 8 valve to discharge the moisture in the system pipeline;

[0044] Step 5: Keep the intermediate device behind the combustion device 14 unobstructed, and discharge the tail gas through the exhaust stack 15 after reaching the standard;

[0045] Step 6: When a fault or emergency occurs in the system, the first regulating valve 4 is interlocked to open, the second regulating valve 6 is interlocked to close, and the combustible tail gas is discharged to the accident flare transfer pipe 5 for treatment and discharge.

[0046] High-pressure operating condition implementation plan:

[0047] Step 1: Close the inlet valve leading to the booster fan 7, open the valve group 9, light the pilot flame of the combustion device 14, and open the third valve 3 to introduce the tail gas of the combustible device;

[0048] Step 2: When the combustion device 14 slowly burns and heats up to a certain temperature, the gas content on-line monitoring system feeds back the data to the monitoring panel 10, observe the changes in the components of the data displayed on the monitoring panel 10, and when the parameters are stable within the combustible range, turn on the main burner of the combustion device 14 to burn;

[0049] Step 3: After the system operates stably, regularly open the replacement drain 8 valve to discharge the moisture in the system pipeline;

[0050] Step 4: Keep the intermediate device behind the combustion device 14 unobstructed, and discharge the tail gas through the exhaust stack 15 after reaching the standard;

[0051] Step 5: When a fault or emergency occurs in the system, the first regulating valve 4 is interlocked to open, the second regulating valve 6 is interlocked to close, and the combustible tail gas is discharged to the accident flare transfer pipe 5 for treatment and discharge.

[0052] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A safe and controllable combustible tail gas treatment device, comprising a main line (18), the front end of the main line (18) being respectively connected to a first valve (1), a second valve (2) and a third valve (3); Features: Also includes: A booster fan (7) is arranged in the middle of a main line (18); an accident flare delivery pipe (5) is arranged on the front side of the outside of the main line (18); a first regulating valve (4) is arranged on the upper end of the accident flare delivery pipe (5); and the booster fan (7) and the first regulating valve (4) are electrically connected to each other; a second regulating valve (6) is arranged on the outside of the main line (18), and the second regulating valve (6) is located in front of the booster fan (7); a pressure transformer (16) is arranged on the outside of the main line (18), and the pressure transformer (16) is located behind the second regulating valve (6); valve groups (9) are arranged at the inlet and outlet of the booster fan (7); and an exhaust pipe (15) is arranged behind the main line (18).

2. A safe, controllable and flammable tail gas treatment device according to claim 1, characterized in that: A low-pressure nitrogen pipeline (17) is provided at the front end of the booster fan (7).

3. A safe, controllable and flammable tail gas treatment device according to claim 1, characterized in that: A displacement shower (8) is provided at the outlet of the booster fan (7).

4. A safe and controllable combustible tail gas treatment device according to claim 1, characterized in that: A monitoring panel (10) is provided on the outlet pipeline of the booster fan (7).

5. A safe, controllable and flammable tail gas treatment device according to claim 1, characterized in that: A sampling port (11) is provided behind the main line (18), and the sampling port (11) is located behind the monitoring panel (10).

6. A safe, controllable and flammable tail gas treatment device according to claim 1, characterized in that: A solenoid valve group (12) is arranged behind the main line (18), and the solenoid valve group (12) is located behind the monitoring panel (10).

7. A safe, controllable and flammable tail gas treatment device according to claim 1, characterized in that: A flame arrester (13) is arranged behind the main line (18), a combustion device (14) is arranged behind the flame arrester (13), and an exhaust pipe (15) is connected to the combustion device (14).

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