Treatment system and method for VOCs gas with high sulfur content and oxygen content

Abstract

The invention provides a treatment system and method for high-sulfur-content and high-oxygen-content VOCs (volatile organic compounds) gas, in the treatment system, a gas explosion risk detection system is arranged on a pipeline between a fan system and an acid-making incineration system, and preset parameters corresponding to an explosion lower limit are set on the gas explosion risk detection system; the gas explosion risk degree detection system is configured to be communicated when the combustible matter concentration parameter in the VOCs gas of the rear-section pipeline of the air distribution system is lower than a preset parameter, and is disconnected and discharges the VOCs gas in the pipeline when the combustible matter concentration parameter is not lower than the preset parameter. According to the treatment system for the high-sulfur-content and high-oxygen-content VOCs gas, the VOCs gas in the VOCs gas collecting system serves as combustion air to be sent to the acid making incineration system, and therefore the problems that an existing negative pressure gas system cannot treat the high-oxygen-content VOCs gas, and a combustion furnace in an existing combustion method process cannot directly discharge the combusted high-sulfur-content VOCs gas are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of VOCs gas treatment, and in particular to a high-sulfur and high-oxygen VOCs gas treatment system and method. BACKGROUND

[0002] In the chemical industry, metallurgy and other industries, VOCs gas treatment is an important environmental protection problem. Since the types of generated VOCs gas are various, the properties are different, and the characteristics of the source are also different, according to their respective characteristics, the treatment methods are also various. The commonly used methods mainly include the introduction of negative pressure coal gas system method and combustion method. The introduction of negative pressure coal gas system method basically eliminates the unorganized emission of tail gas, has low operation cost, simple process, and no secondary pollution. Secondly, the VOCs introduced into the negative pressure system can recover the valuable components such as benzene and ammonia contained in VOCs through the coal gas purification system, so as to realize the transformation of waste into treasure.

[0003] However, the above prior art has the following defects:

[0004] If air or other high-oxygen gas leaks into the negative pressure system and eventually enters the coal gas pipeline, there is a safety risk of coal gas explosion, which can easily cause the VOCs treatment system to shut down, affect the VOCs recovery effect and system safety. The above prior art is only suitable for low-oxygen VOCs gas treatment of part of the storage tank and device near the negative pressure coal gas system and with good sealing performance. For storage tanks that cannot be completely sealed and equipment and devices that do not completely achieve sealed loading and sealed unloading, the generated VOCs gas has a high oxygen content and cannot be directly introduced into the coal gas negative pressure system for recovery.

[0005] If the combustion method is used to treat such VOCs, on the one hand, the energy consumption is high and the operation cost is high, and on the other hand, the toxic gas generated by the combustion of high-sulfur VOCs gas by the combustion method will have the problem of exceeding the standard of pollutants, and cannot be directly discharged into the air. It is necessary to increase the subsequent flue gas purification process.

[0006] Therefore, in order to solve the above problems, the present application provides a high-sulfur and high-oxygen VOCs gas treatment system and method which can treat high-oxygen VOCs gas and avoid the problem that high-sulfur VOCs gas treated by the combustion method cannot be directly discharged. SUMMARY

[0007] In order to solve the above technical problems of the existing VOCs gas treatment, the present application provides a high-sulfur and high-oxygen VOCs gas treatment system and method.

[0008] According to one purpose of the present application, the present application provides a high-sulfur and high-oxygen VOCs gas treatment system, comprising a VOCs gas collection system, an air distribution system, a fan system, and an acid-making incineration system connected in sequence through pipelines, wherein the fan system is configured to provide power for the gas in the pipeline between the VOCs gas collection system and the acid-making incineration system, and the air distribution system is configured to introduce external air into the pipeline to dilute the VOCs gas.

[0009] A gas explosion risk detection system is arranged on the pipeline between the fan system and the acid-making incineration system, and a preset parameter corresponding to the lower explosive limit is arranged on the gas explosion risk detection system. The gas explosion risk detection system is configured to be connected when the combustible concentration parameter of the VOCs gas in the pipeline after the air distribution system is lower than the preset parameter, and to be disconnected and to diffuse and discharge the VOCs gas in the pipeline when the combustible concentration parameter is not lower than the preset parameter.

[0010] Preferably, a pretreatment system is arranged between the VOCs gas collection system and the fan system, and the pretreatment system is configured to preliminarily remove the easily crystallized impurities in the VOCs gas in the pipeline.

[0011] Preferably, the VOCs gas collection system is divided into a tank top VOCs gas collection system and a loading VOCs gas collection system connected in parallel.

[0012] The pretreatment system comprises an acid and alkali washing pretreatment device and an oil washing pretreatment device. The acid and alkali washing pretreatment device is arranged between the tank top VOCs gas collection system and the inlet of the air distribution system, and the oil washing pretreatment device is arranged between the loading VOCs gas collection system and the inlet of the air distribution system.

[0013] Preferably, an interlocked remote pressure gauge and a regulating valve are arranged on the pipeline of the tank top VOCs gas collection system and the loading VOCs gas collection system.

[0014] Preferably, a steam purging and heat tracing system is arranged on the pipeline between the VOCs gas collection system and the pretreatment system.

[0015] Preferably, the high-sulfur and high-oxygen VOCs gas treatment system further comprises:

[0016] An emergency shutdown system, wherein the gas explosion risk detection system and the emergency shutdown system are connected in sequence between the fan system and the acid-making incineration system, the gas explosion risk detection system controls the connection of the emergency shutdown system, and the emergency shutdown system is configured to disconnect the pipeline and diffuse and discharge the VOCs gas in the pipeline in cooperation with the air distribution system and the fan system.

[0017] Preferably, the preset parameter on the gas explosion risk detection system is 25% of the lower explosion limit.

[0018] Preferably, the pipeline between the fan system and the acid-making incineration system is a gas main pipe, the gas explosion risk detection system comprises an FTA detector arranged on the gas main pipe, the emergency shutdown system comprises an emergency release pipe connected to one end of the gas main pipe, the emergency release pipe and the gas main pipe are both provided with a quick cut valve, and the quick cut valve on the gas main pipe is located at the rear section of the emergency release pipe.

[0019] Preferably, the acid-making incineration system comprises combustion air fans and acid-making incineration furnaces connected in sequence.

[0020] The number of combustion air fans and the number of acid-making incineration furnaces are both multiple, the combustion air fans are arranged in parallel to form a combustion air fan group, and the acid-making incineration furnaces are connected in series to the pipeline at the rear section of the combustion air fans.

[0021] A method is also provided, comprising the above-mentioned high-sulfur and high-oxygen VOCs gas treatment system, and the high-sulfur and high-oxygen VOCs gas treatment system is provided with a set value 1 not lower than the preset parameter and a set value 2 lower than the preset parameter.

[0022] The method comprises:

[0023] S1. Adjust the gas explosion risk detection system to the set value 1, close the front pipeline of the acid-making incineration system and open the release, and start the fan system and the air distribution system.

[0024] S2. After the combustible concentration parameter in the VOCs gas in the rear pipeline of the air distribution system is stabilized to the set value 2, put the air distribution system into automatic.

[0025] S3. Close the release and open the front pipeline of the acid-making incineration system.

[0026] S4. Maintain the combustible gas concentration below the set value 2 through the gas explosion risk detection system.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] The high-sulfur and high-oxygen VOCs gas treatment system solves the problems that the existing negative pressure gas system cannot process high-oxygen VOCs gas and the combustion furnace in the existing combustion method process cannot directly discharge high-sulfur VOCs gas after combustion by collecting VOCs gas in the VOCs gas collection system as combustion air and sending it to the acid-making incineration system.

[0029] Additionally, a wind distribution system and an acid-making incineration system are additionally provided. The wind distribution system is used to dilute the combustible concentration in the VOCs gas. The gas explosion risk detection system is used to disconnect and diffuse the VOCs gas in the pipeline when the combustible concentration in the VOCs gas in the pipeline is not lower than the preset parameter, so as to strictly control the combustible gas concentration in the VOCs gas in the pipeline to be lower than the preset parameter corresponding to the lower limit of explosion, and avoid the influence of the combustible concentration in the VOCs gas on the acid-making incineration system.

[0030] The application is further described below in combination with the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a whole schematic view of the high-sulfur and high-oxygen VOCs gas processing system. DETAILED DESCRIPTION

[0032] The following description is used to fully describe the application so as to enable those skilled in the art to implement the application. The preferred embodiments in the following description are only used as examples, and other obvious modifications can be thought by those skilled in the art. The basic principles defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the application.

[0033] Please refer to Figure 1 The application provides a technical solution: a high-sulfur and high-oxygen VOCs gas processing system, which comprises a VOCs gas collection system 1, a wind distribution system 2, a fan system 3 and an acid-making incineration system 4 connected in sequence through a pipeline. The fan system 3 is configured to provide power for the gas in the pipeline between the gas collection system and the acid-making incineration system 4. The wind distribution system 2 is configured to introduce external air into the pipeline to dilute the VOCs gas.

[0034] A gas explosion risk detection system 5 is arranged on the pipeline between the fan system 3 and the acid-making incineration system 4. The gas explosion risk detection system 5 is provided with a preset parameter corresponding to the lower limit of explosion. The gas explosion risk detection system 5 is configured to be connected when the combustible concentration parameter in the VOCs gas in the pipeline after the wind distribution system 2 is lower than the preset parameter, and disconnected and diffuse the VOCs gas in the pipeline when the combustible concentration parameter is not lower than the preset parameter.

[0035] The processing system sends the VOCs gas in the VOCs gas collection system 1 to the acid-making incineration system 4 as combustion air, so as to solve the problems that the existing negative pressure gas system cannot process high-oxygen VOCs gas, and the combustion furnace in the existing combustion method process cannot directly discharge the high-sulfur VOCs gas after combustion.

[0036] In addition, the air distribution system 2 is used to dilute the combustible concentration in the VOCs gas, and the combustible gas explosion risk detection system 5 is used to disconnect and diffuse the VOCs gas in the pipeline when the combustible concentration in the VOCs gas in the pipeline is not less than the preset parameter, so as to strictly control the combustible gas concentration in the VOCs gas in the pipeline to be lower than the preset parameter corresponding to the lower limit of explosion, and avoid the influence of the combustible concentration in the VOCs gas on the acid-making incineration system 4.

[0037] Further, the VOCs gas collection system 1 and the fan system 3 are provided with a pretreatment system 6, which is configured to preliminarily remove acidic medium, alkaline medium, naphthalene, tar and other easily crystallized impurities in the VOCs gas in the pipeline, and prevent the pipeline from being excessively corroded and blocked.

[0038] Specifically, in the treatment system of high-sulfur and high-oxygen VOCs gas, the VOCs gas collection system 1 is divided into a tank top VOCs gas collection system 101 and a loading VOCs gas collection system 102 connected in parallel.

[0039] The pretreatment system 6 includes an acid and alkali pretreatment device 601 and an oil washing pretreatment device 602. The acid and alkali pretreatment device 601 is arranged between the tank top VOCs gas collection system 101 and the inlet of the air distribution system 2, and the oil washing pretreatment device 602 is arranged between the loading VOCs gas collection system 102 and the inlet of the air distribution system 2, so that the gases discharged from the two parts of the gas collection system can be independently pretreated when in use.

[0040] Further, in the VOCs gas collection system 1, in order to ensure a certain negative pressure suction force and prevent the suction force of a certain VOCs gas collection point from being too large to cause the effect of the remaining VOCs gas collection points to be weak, an interlocked remote pressure gauge and a regulating valve are arranged on the pipelines of the tank top VOCs gas collection system 101 and the loading VOCs gas collection system 102, so as to realize accurate control of the suction force of the VOCs gas.

[0041] In the embodiment, the air distribution system 2 adopts an air distribution regulating valve for diluting the combustible concentration in the VOCs gas.

[0042] The fan system 3 adopts a suction fan to provide power for VOCs gas collection.

[0043] Further, a steam purging and heat tracing system 7 is arranged on the pipeline between the VOCs gas collection system 1 and the pretreatment system 6, as shown in Figure 1, the steam purging and heat tracing system 7 is not a separate device, but a set of auxiliary process system integrated on the gas conveying pipeline, which solves the problem of temperature change when conveying special component gas under long distance and complex working conditions, and is an indispensable auxiliary process system to ensure the operation, sustainability and stability of the main process system. It ensures that the VOCs gas always maintains a specific physical state during the conveying process, prevents condensation and blockage caused by temperature changes, and thus ensures the continuous and stable operation of the entire process. In this embodiment, the steam purging and heat tracing system 7 is provided between the tank top VOCs gas collection system 101 and the pretreatment system 6, and between the loading VOCs gas collection system 102 and the pretreatment system 6.

[0044] For the specific structure of the gas explosion risk detection system 5, please continue to refer to Figure 1 , the treatment system of the high-sulfur and high-oxygen VOCs gas further comprises:

[0045] An emergency shutdown system 8, the gas explosion risk detection system 5 and the emergency shutdown system 8 are sequentially connected between the fan system 3 and the acid-making incineration system 4, the gas explosion risk detection system 5 is connected to the emergency shutdown system 8, and the emergency shutdown system 8 is configured to disconnect the pipeline and cooperate with the air distribution system 2 and the fan system 3 to diffuse and discharge the VOCs gas in the pipeline. In use, the gas explosion risk detection system 5 controls the disconnection and connection of the pipeline according to the gas concentration in the pipeline through the emergency shutdown system 8, when the pipeline is disconnected, the air distribution system 2, the fan system 3 and the emergency shutdown system 8 are sequentially connected to diffuse and discharge the gas in the pipeline, thereby reducing the combustible concentration of the VOCs gas in the pipeline to below the preset parameter.

[0046] As a preferred, the preset parameter on the gas explosion risk detection system 5 is 25% of the lower explosion limit, that is, when the combustible concentration of the VOCs gas in the pipeline reaches 25% of the lower explosion limit, the gas explosion risk detection system 5 quickly disconnects the VOCs gas main pipe 9 through the emergency shutdown system 8, and is discharged by emergency diffusion.

[0047] In the embodiment, the pipeline between the fan system 3 and the acid-making incineration system 4 is a gas main pipe 9, the gas explosion risk detection system 5 comprises an FTA detector 501 arranged on the gas main pipe 9, the emergency shutdown system 8 comprises an emergency release pipe 801 having one end communicated with the gas main pipe 9, the emergency release pipe 801 and the gas main pipe 9 are both provided with quick cut valves 10, and the quick cut valve 10 on the gas main pipe 9 is located at a rear section of the emergency release pipe 801. The FTA detector 501 detects the combustible concentration of VOCs gas in the gas main pipe 9. When the combustible concentration of VOCs gas is not lower than the lower limit concentration parameter of explosion, the gas main pipe 9 is cut off through the quick cut valve 10, and the quick cut valve 10 on the emergency release pipe 801 is opened to connect the pipeline to the emergency release pipe 801. When the combustible concentration of VOCs gas is lower than the lower limit concentration parameter of explosion, the opening and closing states of the two quick cut valves 10 are opposite.

[0048] The acid-making incineration system 4 comprises combustion-supporting air fans 401 and acid-making incineration furnaces 402 communicated in sequence.

[0049] The number of the combustion-supporting air fans 401 and the number of the acid-making incineration furnaces 402 are both plural, the combustion-supporting air fans 401 are arranged in parallel to form a combustion-supporting air fan group, and the acid-making incineration furnaces 402 are arranged in series at a rear pipeline of the combustion-supporting air fans 401. As a preferred, in the embodiment, the number of the combustion-supporting air fans 401 is 3, and the number of the acid-making incineration furnaces 402 is 2. The parallel operation of the multiple fans forms a redundant system. On the one hand, when one of the fans needs to be shut down for routine maintenance or failure, the remaining fans can still continue to operate, only the total air volume is reduced, which greatly improves the availability of the entire VOCs treatment system, avoids the whole system shutdown due to single equipment failure, and affects the main production process and environmental protection standard. On the other hand, the production load may fluctuate, and the total combustion-supporting air volume can be flexibly adjusted by starting and stopping different number of fans, so as to accurately match the demand of the acid-making incineration furnaces 402 under different production loads, and realize energy-saving operation. The two acid-making incineration furnaces 402 are arranged in parallel, and one standby and one in use are used at the same time, i.e. not opened at the same time.

[0050] The acid-making incineration system 4 is a prior art, and the high-sulfur and high-oxygen VOCs gas is recovered and treated without adding a flue gas purification treatment system.

[0051] Based on the above VOCs gas treatment system, a method is also provided, which generally comprises:

[0052] In the initial stage, i.e. the initial stage of starting the system, the combustible concentration of VOCs gas is preliminarily reduced to a safe and acceptable level through manual or basic control;

[0053] An optimization and automation stage, which aims to put the system into full automatic operation after achieving the initial safety target, to realize more accurate, stable and efficient continuous control.

[0054] Specifically, the high-sulfur and oxygen-containing VOCs gas treatment system is provided with a set value 1 not lower than the preset parameter and a set value 2 lower than the preset parameter;

[0055] The method comprises:

[0056] Open the hand valves before and after the regulating valve on the pipeline of the slot top VOCs gas collection system 101 and the loading VOCs gas collection system 102, and put the pressure regulation into automatic, open the steam purging and heat preservation system 7;

[0057] Open the pretreatment system 6;

[0058] Open the gas explosion risk detection system 5, which uses the FTA detector 501, and set the interlocking value on the FTA detector 501 to the set value 1;

[0059] Close the VOCs gas main pipe 9 quick cut valve 10 before the acid making incineration system 4, and open the quick cut valve 10 of the emergency release pipe 801;

[0060] Open the fan system 3, gradually increase the speed, and make the gas pressure in the pipeline before the fan system 3 reach P1, and put the fan system 3 into automatic;

[0061] Open the air distribution system 2, which uses air distribution regulating valves, and put the air distribution regulating valves into automatic, so that the FTA detector 501 value reaches the set value 2;

[0062] Open the VOCs gas main pipe 9 quick cut valve 10 before the combustion air fan 401, close the quick cut valve 10 of the emergency release pipe 801, send the VOCs gas to the acid making incineration system 4, put the system into automatic, and complete the initial stage of the system;

[0063] When the VOCs gas combustible concentration appears abnormal or other production problems occur, and the FTA detector 501 value reaches the set value 1, the VOCs gas main pipe 9 quick cut valve 10 is automatically closed, and the quick cut valve 10 of the emergency release pipe 801 is automatically opened;

[0064] After the abnormal situation is handled, the system is put into use again.

[0065] In this embodiment, the set value 1 is an interlocking set value, the value of the set value 1 is 25%, that is, when the detection system value exceeds 25%, it will be interlocked to emergency release, and the set value 2 is a safety value lower than 25%, and as a preferred, the set value 2 is 10%.

[0066] Further, the high-sulfur oxygen-containing VOCs gas treatment system is further provided with an alarm value between the set value 1 and the set value 2, the gas explosion risk detection system is electrically connected with an audible and light alarm device, the audible and light alarm device is started when the value detected by the gas explosion risk detection system exceeds the alarm value, and the audible and light alarm device emits audible and light alarms. As preferred, the alarm value is 15%, and the set value 2 and the alarm value are both adjustable.

[0067] In summary, the high-sulfur oxygen-containing VOCs gas treatment system mainly comprises a VOCs gas collection system 1, a pretreatment system 6, a wind distribution system 2, a fan system 3, a gas explosion risk detection system 5, an emergency shutdown system 8 and an acid-making incineration system 4.

[0068] The VOCs gas in the VOCs gas collection system 1 is sent to the acid-making incineration system 4 by the fan system 3; the pretreatment system 6 is arranged before the VOCs gas enters the main pipe to preliminarily remove the acidic medium, the alkaline medium and the naphthalene, tar and other easily crystallized impurities in the VOCs gas, so as to prevent the pipeline from being excessively corroded and blocked; the VOCs gas sent to the acid-making incineration system 4 is diluted by the wind distribution system 2 and detected by the online gas explosion risk detection system 5, and then sent to the acid-making incineration system 4; when the lower limit of explosion is 25%, the emergency shutdown system 8 quickly shuts off the VOCs gas main pipe 9, and the VOCs gas is discharged by emergency release.

[0069] The treatment system realizes the collection and recovery of high-sulfur oxygen-containing VOCs gas, effectively treats the high-sulfur oxygen-containing VOCs gas generated in the plant, solves the environmental protection problem of the enterprise, realizes the automatic collection and treatment of high-sulfur oxygen-containing VOCs gas, basically does not need manual participation under normal circumstances, adopts multiple methods for preventing pipeline blockage, can effectively prevent pipeline blockage, reduces the occurrence of pipeline blockage and the workload of daily maintenance, and has simple system, does not need to add a flue gas purification treatment system, and has low project investment and operation cost.

[0070] The above-described embodiments are only used to illustrate the technical ideas and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot be limited to the patent application range of the present application, that is, any equivalent changes or modifications made according to the disclosed spirit of the present application still fall within the patent range of the present application.

Claims

1. A treatment system for high-sulfur and oxygen-containing VOCs gas, characterized in that, include: The VOCs gas collection system (1), air distribution system (2), fan system (3), and acid incineration system (4) are connected in sequence by pipelines. The fan system (3) is configured to provide power for the gas in the pipeline between the VOCs gas collection system (1) and the acid incineration system (4). The air distribution system (2) is configured to introduce external air into the pipeline to dilute the VOCs gas. A gas explosion hazard detection system (5) is installed on the pipeline between the fan system (3) and the acid production and incineration system (4). The gas explosion hazard detection system (5) is equipped with a preset parameter corresponding to the lower explosion limit. The gas explosion hazard detection system (5) is configured to connect when the concentration parameter of combustibles in the VOCs gas in the downstream pipeline of the air distribution system (2) is lower than the preset parameter, and disconnect and release the VOCs gas in the pipeline when it is not lower than the preset parameter.

2. The treatment system for high sulfur and oxygen-containing VOCs gas according to claim 1, characterized in that, A pretreatment system (6) is provided between the VOCs gas collection system (1) and the fan system (3). The pretreatment system (6) is configured to initially remove easily crystallizable impurities from the VOCs gas in the pipeline.

3. The treatment system for high sulfur and oxygen-containing VOCs gas according to claim 2, characterized in that, The VOCs gas collection system (1) is divided into a parallel tank top VOCs gas collection system (101) and a vehicle-mounted VOCs gas collection system (102). The pretreatment system (6) includes an acid washing and alkaline washing pretreatment device (601) and an oil washing pretreatment device (602). The acid washing and alkaline washing pretreatment device (601) is located between the inlet of the tank top VOCs gas collection system (101) and the air distribution system (2). The oil washing pretreatment device (602) is located between the loading VOCs gas collection system (102) and the inlet of the air distribution system (2).

4. The treatment system for high sulfur and oxygen-containing VOCs gas according to claim 3, characterized in that, The pipelines of the tank top VOCs gas collection system (101) and the vehicle loading VOCs gas collection system (102) are equipped with interlocked remote pressure gauges and regulating valves.

5. The treatment system for high sulfur and oxygen-containing VOCs gas according to claim 1, characterized in that, A steam purging and heat tracing system (7) is installed on the pipeline between the VOCs gas collection system (1) and the pretreatment system (6).

6. The treatment system for high sulfur and oxygen-containing VOCs gas according to claim 1, characterized in that, The system for treating high-sulfur and oxygen-containing VOCs gases also includes: The emergency shut-off system (8) is connected in series between the fan system (3) and the acid production and incineration system (4). The gas explosion hazard detection system (5) controls the connection of the emergency shut-off system (8). The emergency shut-off system (8) is configured to disconnect the pipeline and cooperate with the air distribution system (2) and the fan system (3) to release and discharge VOCs gas in the pipeline.

7. A treatment system for high sulfur and oxygen-containing VOCs gas according to claim 1, characterized in that, The preset parameter on the gas explosion hazard detection system (5) is 25% of the lower explosion limit.

8. A treatment system for high sulfur and oxygen-containing VOCs gas according to claim 1, characterized in that, The pipeline between the fan system (3) and the acid production and incineration system (4) is a gas main pipe (9). The gas explosion hazard detection system (5) includes an FTA detector (501) installed on the gas main pipe (9). The emergency shut-off system (8) includes an emergency vent pipe (801) with one end connected to the gas main pipe (9). Both the emergency vent pipe (801) and the gas main pipe (9) are equipped with quick-cut valves (10). The quick-cut valve (10) on the gas main pipe (9) is located at the rear end of the emergency vent pipe (801).

9. A treatment system for high-sulfur and oxygen-containing VOCs gas according to claim 1, characterized in that, The acid production and incineration system (4) includes a combustion air blower (401) and an acid production and incineration furnace (402) connected in sequence. The number of combustion air blowers (401) and the number of acid incinerators (402) are both multiple. The combustion air blowers (401) are arranged in parallel to form a combustion air blower group, and the acid incinerators (402) are connected in series in the downstream pipeline of the combustion air blowers (401).

10. A method comprising a treatment system for high sulfur-containing and oxygen-containing VOCs gas as described in any one of claims 1-9, wherein the high sulfur-containing and oxygen-containing VOCs gas treatment system is provided with a set value 1 not lower than the preset parameter and a set value 2 lower than the preset parameter; The method includes: S1. Set the gas explosion hazard detection system (5) to the set value 1, shut down the front pipeline of the acid production and incineration system (4) and open the venting, start the fan system (3) and the air distribution system (2). S2. After the concentration of combustibles in the VOCs gas in the downstream pipeline of the air distribution system (2) stabilizes to the set value 2, the air distribution system (2) is put into automatic mode. S3. Close the vent and open the front pipeline of the acid production and incineration system (4); S4. The concentration of the combustible gas is maintained below the set value of 2 by means of the gas explosion hazard detection system (5).

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