A blast furnace gas desulfurization activated carbon regeneration process and device

Abstract

The present invention belongs to the technical field of desulfurization activated carbon regeneration, and relates to a blast furnace gas desulfurization activated carbon regeneration process and device, the regeneration device includes a washing and extraction tank, a regeneration reactor, a gas detection and analysis system, an automatic control system, a temperature monitoring system, and a deoxygenation reactor; the regeneration process includes S1, washing and extraction, S2, heating regeneration: according to the sulfur content of the outlet gas of the regeneration reactor, the heating temperature is adjusted by gradient, and the temperature range of the regeneration reactor is controlled: 150-300°C, and the temperature gradient is 30-50°C; S3, gas circulation, air oxidation, so that elemental sulfur is precipitated from polysulfide. The regeneration process of the present invention has a small carbon loss rate, increases the number of regenerations, and further reduces costs; the temperature of the thermal regeneration process is 150-300°C, the regeneration temperature is low, and the regeneration temperature can be adjusted according to the outlet gas concentration gradient, reducing energy consumption, and at the same time ammonia resources can be recycled, reducing the amount of solution used and the amount of waste liquid discharged, and the regeneration process can obtain elemental sulfur with economic value.

Description

Technical Field

[0001] The present invention belongs to the technical field of desulfurization activated carbon regeneration, and relates to a process and device for regenerating desulfurization activated carbon for blast furnace gas. Background Art

[0002] Blast furnace gas (BFG) is the largest combustible gas produced by iron and steel production enterprises, and its main components are N 2 , CO 2 , CO, H 2 , etc. Due to the presence of a large amount of combustible gas CO, blast furnace gas has a wide range of uses and can be sent to user units such as blast furnace hot stoves, rolling mill heating furnaces, and gas power generation as fuel. At the same time, since blast furnace gas contains a small amount of sulfur elements, it is easy to cause the SO 2 in the flue gas after combustion of downstream users to exceed the standard, and the volume of the gas increases, the temperature is high, and the pressure is low after use. In addition, downstream users are numerous and scattered. Adopting end-of-pipe treatment faces difficulties such as large equipment investment, high costs, and operation management.

[0003] In the research on desulfurization at the source of blast furnace gas, the process of hydrolytic conversion + adsorption for removing sulfur compounds has become the first choice among many current source desulfurization processes due to its strong applicability, simple operation, high desulfurization efficiency, etc. Among them, activated carbon / modified activated carbon has become a widely used desulfurization adsorbent in this process due to its advantages such as stable chemical properties, large specific surface area, and rich surface groups. The main desulfurization reactions occurring on the activated carbon adsorbent are:

[0004] 2H 2 S + O 2 →2S↓ + 2H 2 O

[0005] As the desulfurization process progresses, the elemental sulfur generated by the desulfurization reaction continuously deposits on the surface and pores of the activated carbon. When the active sites of the activated carbon are completely covered by elemental sulfur, the activated carbon is saturated with adsorption and loses its catalytic activity.

[0006] At present, the main treatment methods for saturated activated carbon are incineration, landfill, and regeneration. The first two methods do not make full use of resources and there are also problems of secondary pollution. Therefore, the research on desorption regeneration and harmless treatment of saturated activated carbon is of great significance for environmental protection, economic benefits, and resource utilization.

[0007] At present, the research on thermal regeneration using air, inert gas, and steam as media has been very mature and is the main application technology for industrial activated carbon desorption regeneration at the present stage. It has the advantages of high and stable regeneration efficiency, but has high energy consumption (the thermal regeneration temperature is usually above 450°C), large self-heat loss of the activated carbon, a carbon loss rate generally between 5% and 10%, collapse of the activated carbon pore structure, and the risk of spontaneous combustion of the activated carbon when the heating temperature is too high.

[0008] Therefore, there is an urgent need for a new type of activated carbon regeneration process for blast furnace gas desulfurization, which can not only reduce energy consumption and carbon loss rate, but also restore the adsorption performance of activated carbon and realize the multiple utilization of adsorbents. Summary of the Invention

[0009] In view of this, the purpose of the present invention is to solve the deficiencies existing in the existing activated carbon regeneration technology and provide a regeneration process and device for activated carbon for blast furnace gas desulfurization.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] A regeneration process for activated carbon for blast furnace gas desulfurization includes the following steps:

[0012] S1. Washing and extraction: Place the activated carbon with saturated adsorption in a washing and extraction tank filled with (NH 4 ) 2 S solution. At room temperature, use (NH 4 ) 2 S solution to wash and extract the activated carbon multiple times, so that the elemental sulfur deposited in the saturated activated carbon dissolves in the solution to form polysulfide;

[0013] S2. Heating regeneration: Subsequently, place the activated carbon in a regeneration reactor, heat the regeneration reactor. After the temperature rises to the set temperature, open the NH 3 make-up gas pipe valve and N 2 / steam make-up gas pipe valve on the regeneration reactor, and bring the elemental sulfur vapor sublimated by heating into the washing and extraction tank through the introduced gas. Space velocity under operating conditions: 100h -1 1300h -1 ;

[0014] A gas detection port is provided on the regeneration reactor, and the gas detection port is connected to a gas detection and analysis system to analyze the component content of the outlet gas in real time. According to the sulfur content of the outlet gas, the heating temperature is adjusted in a gradient manner to control the temperature range of the regeneration reactor: 110 - 1300 °C, and the temperature gradient: 30 - 110 °C; after the heating regeneration is completed and cooled to room temperature, the regenerated activated carbon can be obtained;

[0015] S3. Gas circulation and air oxidation: A gas transmission pipeline is provided on the washing and extraction tank. While heating and regenerating, air is blown into the solution in the washing and extraction tank. The heated gas coming out of the regeneration reactor brings heat to the solution in the washing and extraction tank, increasing the solution temperature and causing part of the (NH 4 ) 2 S in the solution to decompose to generate NH 3 , and the following reactions are included in the system:

[0016] (NH4) 2 S n +0.1O 2 →2NH 3 +nS↓+H 2 O;

[0017] Elemental sulfur is precipitated from the polysulfide by the oxidation of air, settles to the bottom of the washing and extraction tank, and the generated NH 3 After deoxidation treatment, it enters the regeneration reactor to recycle ammonia. After the regeneration is completed, the solution in the washing and extraction tank is collected and treated to obtain solid elemental sulfur.

[0018] Furthermore, in step S2, the specific method of adjusting the heating temperature in a gradient manner is: when the sulfur content in the outlet gas decreases to the set concentration value, the heating temperature is increased to the next temperature value according to the set gradient.

[0019] Furthermore, in step S1, the number of washing and extraction times is 311 times, and the time for each washing and extraction is 0.111.1 h.

[0020] A blast furnace gas desulfurization activated carbon regeneration device includes:

[0021] A washing and extraction tank, which contains (NH 4 ) 2 S solution for washing and extracting saturated activated carbon, so that the elemental sulfur deposited in the saturated activated carbon dissolves in the solution to form polysulfide;

[0022] A regeneration reactor, which is provided with an NH 3 make-up gas pipe, an N 2 / steam make-up gas pipe, a regeneration gas outlet pipe, and a heating system;

[0023] The NH 3 make-up gas pipe is used to provide or supplement the ammonia required for regeneration; the N 2 / steam make-up gas pipe is used to provide or supplement the nitrogen required for regeneration; the heating system is used to provide heat for the regeneration of activated carbon;

[0024] The regeneration gas outlet pipe is communicated with the washing and extraction tank, and the gas generated after the regeneration of activated carbon is introduced into the solution of the washing and extraction tank;

[0025] An air input pipeline is also provided on the washing and extraction tank for introducing air into the solution; the washing and extraction tank is communicated with a deoxidation reactor through a pipeline, and the deoxidation reactor is communicated with the regeneration reactor through a regeneration gas inlet pipeline; the gas generated after the regeneration of activated carbon and the ammonia generated by the reaction of air with the solution in the washing and extraction tank enter the regeneration reactor for recycling after being deoxidized by the deoxidation reactor;

[0026] A gas detection and analysis system is provided with a gas detection port on the regeneration reactor, and the gas detection and analysis system is connected to the gas detection port for detecting the content of each component of the gas after the regeneration reaction.

[0027] Furthermore, a temperature monitoring system is also provided on the regeneration reactor for real-time monitoring of the temperature in the regeneration reactor.

[0028] Furthermore, an automatic control system is included. The temperature monitoring system, the gas detection and analysis system, and the heating system are all connected to the automatic control system. The temperature monitoring system and the gas detection and analysis system transmit the monitoring data to the automatic control system for analysis and processing, and the automatic control system automatically controls the heating process of the heating system according to the monitoring data.

[0029] Furthermore, the NH 3 make-up gas pipe, N 2 / steam make-up gas pipe, gas detection port, regeneration gas inlet pipe, and regeneration gas outlet pipe are all provided with valves and flow meters. The valves and flow meters are all connected to the automatic control system; the automatic control system controls the opening and closing degree of the valves according to the real-time flow data, thereby automatically controlling the intake and make-up gas processes of the regeneration gas.

[0030] Furthermore, the heating system adopts the method of electric heating or microwave heating.

[0031] Furthermore, the gas detection and analysis system is a gas chromatograph detector for detecting the content of each component of the gas after the regeneration reaction, especially the sulfide content, such as H 2 S, COS, etc.

[0032] The beneficial effects of the present invention are as follows:

[0033] 1. The carbon loss rate of the regeneration process of the present invention is relatively small, only 1% - 3%. At the same time, the number of regeneration times is increased, and the number of regeneration times ≥ 1 time, further reducing the cost; the temperature in the thermal regeneration process of the present invention is 110 - 1300 °C, the regeneration temperature is relatively low, and the regeneration temperature can be adjusted according to the concentration gradient of the outlet gas, reducing energy consumption.

[0034] 2. The ammonia resources in the present invention are recycled, reducing the usage amount of the solution and the discharge amount of the waste liquid. At the same time, elemental sulfur with economic value can be obtained during the regeneration process.

[0035] Other advantages, objectives, and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. Brief Description of the Drawings

[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail and preferably below in conjunction with the accompanying drawings, where:

[0037] Figure 1 This is a schematic diagram of the process for regenerating activated carbon for desulfurizing blast furnace gas in the present invention.

[0038] Figure 2 This is a schematic diagram of the device for regenerating activated carbon for desulfurizing blast furnace gas in the present invention.

[0039] Reference numerals: 1 - inlet pipeline for regeneration gas; 2 - temperature monitoring system; 3 - NH 3 make-up gas pipeline; 4 - N 2 / steam make-up gas pipeline; 1 - heating system; 6 - regeneration reactor; 7 - outlet pipeline for regeneration gas; 8 - gas detection port; 9 - gas chromatograph detector; 10 - deoxidation reactor. Specific embodiments

[0040] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0041] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to the present invention; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0042] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation to the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] Embodiment 1

[0044] Please refer to Figure 2 , which is a regenerating device for blast furnace gas desulfurization activated carbon, including a washing and extraction tank, a regeneration reactor 6, a gas detection and analysis system, an automatic control system, a temperature monitoring system 2, and a deoxidation reactor 10;

[0045] Among them, the washing and extraction tank is filled with (NH 4 ) 2 S solution, which is used to wash and extract the saturated activated carbon, so that the elemental sulfur deposited in the saturated activated carbon dissolves in the solution to form polysulfide;

[0046] The regeneration reactor 6 is provided with an NH3 supply pipe 3, an N2 / steam supply pipe 4, a regeneration gas outlet pipe 7, and a heating system 1; the NH3 supply pipe 3 is used to provide or supplement the ammonia required for regeneration; the N2 / steam supply pipe 4 is used to provide or supplement the nitrogen required for regeneration; the heating system 1 is used to provide heat for the regeneration of activated carbon;

[0047] The regeneration gas outlet pipe 7 is connected to the washing and extraction tank, and the gas generated after the regeneration of the activated carbon is introduced into the solution in the washing and extraction tank; an air input pipeline is also provided on the washing and extraction tank, which is used to introduce air into the solution; the washing and extraction tank is connected to the deoxidation reactor 10 through a pipeline, and the deoxidation reactor 10 is connected to the regeneration reactor 6 through a regeneration gas inlet pipe 1; the gas generated after the regeneration of the activated carbon and the ammonia generated by the reaction of air and the solution in the washing and extraction tank enter the regeneration reactor 6 for recycling after being deoxidized by the deoxidation reactor 10.

[0048] Among them, a gas detection port 8 is also provided on the regeneration reactor 6, and the gas detection and analysis system is connected to the gas detection port 8, which is used to detect the content of each component of the gas after the regeneration reaction.

[0049] The temperature monitoring system 2 is installed on the regeneration reactor 6, which is used to monitor the temperature in the regeneration reactor 6 in real time. The temperature monitoring system 2, the gas detection and analysis system, and the heating system 1 are all connected to the automatic control system. The temperature monitoring system 2 and the gas detection and analysis system transmit the monitoring data to the automatic control system for analysis and processing, and the automatic control system automatically controls the heating process of the heating system 1 according to the monitoring data.

[0050] Among them, valves and flow meters are installed on the NH3 supply pipe 3, the N2 / steam supply pipe 4, the gas detection port 8, the regeneration gas inlet pipe 1, and the regeneration gas outlet pipe 7, and the valves and flow meters are all connected to the automatic control system; the automatic control system controls the opening and closing degree of the valves according to the real-time flow data, so as to automatically control the intake and air supply processes of the regeneration gas.

[0051] Among them, the heating system 1 can adopt the methods of electric heating or microwave heating, and the gas detection and analysis system adopts a gas chromatograph detector 9.

[0052] Please refer to Figure 1 , which is a schematic diagram of the process flow for the regeneration of activated carbon for blast furnace gas desulfurization. Using the activated carbon regeneration device for blast furnace gas desulfurization in this embodiment to regenerate the activated carbon, the following steps are included:

[0053] S1. Washing and extraction: Place 100 kg of activated carbon that has reached saturation adsorption into 2 tons of (NH 4 ) 2 S solution. At room temperature, wash and extract with (NH 4 ) 2 S solution multiple times. The number of times: 1 time, and the washing and extraction time each time: 1.1 h, so that the elemental sulfur deposited in the saturated activated carbon dissolves in the solution to form polysulfide.

[0054] S2. Heating regeneration: Subsequently, place the activated carbon into the regeneration reactor 6, turn on the heating system 1. After the temperature rises to the set temperature, open the valve of the NH3 makeup gas pipe 3 and the valve of the N 2 / steam makeup gas pipe, and control the flow ratio as NH 3 :N 2 / steam = 1:3. Bring the elemental sulfur vapor sublimated by heating into the washing and extraction pool through the introduced gas. The working space velocity is: 210 h -1 ; The gas chromatograph detector 9 analyzes the gas component content at the gas detection port 8 in real time. When the sulfur content in the outlet gas ≤ 10 ppm, increase the heating temperature, control the temperature range of the regeneration reactor 6: 180 - 270 °C, the temperature gradient: 30 °C. After the heating regeneration is completed and cooled to room temperature, the regenerated activated carbon can be obtained.

[0055] S3. Gas circulation, air oxidation: While heating regeneration is in progress, blow air into the solution. The total air flow rate: 100 L / h. The heated gas brings heat to the solution in the washing and extraction pool, increasing the solution temperature, and causing part of the (NH 4 ) 2 S in the solution to decompose to generate NH 3 , and the main reactions in the system are as follows:

[0056] (NH4) 2 S n +0.1O 2 →2NH 3 +nS↓+H 2 O

[0057] Through the oxidation of air, elemental sulfur is precipitated from the polysulfide and settles to the bottom of the washing pool, and the generated NH 3After being deoxidized by the deoxidation reactor 10, it enters the regeneration reactor 6 through the regeneration gas inlet pipe 1 to realize the recycling of ammonia resources. After the regeneration is completed, the solution in the washing and extraction tank is collected and processed, and then solid elemental sulfur can be obtained.

[0058] Example 2

[0059] This example uses the blast furnace gas desulfurization activated carbon regeneration device in Example 1. The difference from Example 1 is the different process parameters. The regeneration process includes the following steps:

[0060] S1. Washing and extraction: Place 1000 kg of activated carbon with saturated adsorption in 3 tons of (NH 4 ) 2 S solution with a mass concentration of 20%. At room temperature, wash and extract with (NH 4 ) 2 S solution for multiple times. The number of times is 4 times, and the washing and extraction time for each time is 1 h, so that the elemental sulfur deposited in the saturated activated carbon dissolves in the solution to form polysulfide.

[0061] S2. Heating regeneration: Then place the activated carbon in the regeneration reactor 6, turn on the heating system 1. After the temperature rises to the set temperature, open the valve of the NH3 makeup gas pipe 3 and the valve of the N 2 / steam makeup gas pipe, and control the flow ratio of NH 3 :N 2 / steam = 2:3. Bring the elemental sulfur vapor sublimated by heating into the washing and extraction tank through the introduced gas. The space velocity of the working condition is: 200 h -1 ; The gas chromatograph detector 9 analyzes the gas component content at the gas detection port 8 in real time. When the sulfur content in the outlet gas ≤ 30 ppm, increase the heating temperature, control the temperature range of the regeneration reactor 6: 110 - 1300 °C, the temperature gradient is 10 °C, set the heating time for each temperature gradient section: 1.1 h. After the heating regeneration is completed and cooled to room temperature, the regenerated activated carbon catalyst can be obtained.

[0062] S3. Gas circulation and air oxidation: While heating and regenerating, blow air into the solution, control the total air flow: 1000 L / h. The heated gas brings heat to the solution in the washing and extraction tank, raising the solution temperature, and causing part of the (NH 4 ) 2 S in the solution to decompose to generate NH 3 , and the main reactions in the system are as follows:

[0063] (NH4) 2 S n +0.1O 2 →2NH 3 +nS↓+H 2 O

[0064] Elemental sulfur is precipitated from polysulfides by the oxidation of air and settles to the bottom of the washing tank to generate NH 3 After deoxidation treatment, it enters the regeneration reactor 6 again through the regeneration gas inlet pipe 1 to realize the recycling of ammonia resources. After the regeneration is completed, after collecting and treating the solution in the washing and extraction tank, solid elemental sulfur can be obtained.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A blast furnace gas desulfurization activated carbon regeneration process, characterized in that: The steps include: S1. Washing and extraction: Place the activated carbon that has reached saturation in a washing and extraction tank filled with (NH4)2S solution. At room temperature, wash and extract the activated carbon with (NH4)2S solution for multiple times to dissolve the elemental sulfur deposited in the saturated activated carbon into the solution to form polysulfide. S2. Heating regeneration: Then place the activated carbon in the regeneration reactor and heat the regeneration reactor. When the temperature reaches the set temperature, open the NH3 gas supply pipe valve and the N2 / water vapor gas supply pipe valve on the regeneration reactor, and bring the heated and sublimated elemental sulfur vapor into the washing extraction tank through the introduced gas. The working air velocity is 100h -1 ~300h -1 ; The regeneration reactor is provided with a gas detection port, which is connected to a gas detection and analysis system to analyze the outlet gas component content in real time. According to the outlet gas sulfur content, the heating temperature is adjusted by gradient to control the temperature range of the regeneration reactor: 150-300°C, the temperature gradient: 30-50°C; after the heating regeneration is completed and cooled to room temperature, the regenerated activated carbon is obtained; S3, gas circulation, air oxidation: The washing and extraction tank is provided with a gas delivery pipeline. During heating and regeneration, air is blown into the solution in the washing and extraction tank. The heated gas coming out of the regeneration reactor brings heat to the solution in the washing and extraction tank, raising the temperature of the solution and decomposing part of the (NH4)2S in the solution to generate NH3. The system includes the following reactions: (NH4)2S n +0.5O2→2NH3+nS↓+H2O; Elemental sulfur is precipitated from polysulfides through the oxidation of air and settles to the bottom of the washing and extraction tank. The generated NH3 is deoxygenated and then enters the regeneration reactor for recycling of ammonia. After the regeneration is completed, the solution in the washing and extraction tank is collected and processed to obtain solid elemental sulfur.

2. The blast furnace gas desulfurization activated carbon regeneration process according to claim 1, characterized in that: In step S2, the specific method of gradient regulating the heating temperature is: when the sulfur content of the outlet gas decreases to a set concentration value, the heating temperature is increased to the next temperature value according to the set gradient.

3. The blast furnace gas desulfurization activated carbon regeneration process according to claim 1, characterized in that: In step S1, the washing and extraction times are 3 to 5 times, and the washing and extraction time for each time is 0.5 to 1.5 hours.

4. A blast furnace gas desulfurization activated carbon regeneration device, characterized in that: include: A washing extraction tank, wherein the washing extraction tank contains a (NH4)2S solution for washing and extracting saturated activated carbon, so that the elemental sulfur deposited in the saturated activated carbon is dissolved in the solution to form polysulfide; A regeneration reactor, wherein the regeneration reactor is provided with an NH3 air supply pipe, a N2 / water vapor air supply pipe, a regeneration gas outlet pipe, and a heating system; the NH3 air supply pipe is used to provide or supplement ammonia required for regeneration; the N2 / water vapor air supply pipe is used to provide or supplement nitrogen required for regeneration; the heating system is used to provide heat for activated carbon regeneration; The regeneration gas outlet pipe is connected to the washing and extraction tank, and is used to pass the gas generated after the activated carbon is regenerated into the solution in the washing and extraction tank; The washing and extraction tank is also provided with an air input pipeline for introducing air into the solution in the washing and extraction tank; the washing and extraction tank is connected to the deoxygenation reactor through a pipeline, and the deoxygenation reactor is connected to the regeneration reactor through a regeneration gas inlet pipeline; the gas generated after the activated carbon is regenerated and the ammonia generated by the reaction of the air with the solution in the washing and extraction tank is deoxygenated in the deoxygenation reactor and then enters the regeneration reactor for recycling; A gas detection and analysis system, wherein the regeneration reactor is also provided with a gas detection port, and the gas detection and analysis system is connected to the gas detection port to detect the content of each component of the gas after the regeneration reaction; The regeneration reactor is also provided with a temperature monitoring system for real-time monitoring of the temperature in the regeneration reactor; the heating system adopts electric heating or microwave heating.

5. The activated carbon regeneration device for blast furnace gas desulfurization according to claim 4 is characterized in that: It also includes an automatic control system, and the temperature monitoring system, gas detection and analysis system, and heating system are all connected to the automatic control system. The temperature monitoring system and the gas detection and analysis system transmit the monitoring data to the automatic control system for analysis and processing, and the automatic control system automatically controls the heating process of the heating system according to the monitoring data.

6. The activated carbon regeneration device for blast furnace gas desulfurization according to claim 5 is characterized in that: The NH3 gas supply pipe, N2 / water vapor gas supply pipe, gas detection port, regeneration gas inlet pipe and regeneration gas outlet pipe are all provided with valves and flow meters, and the valves and flow meters are all connected to the automatic control system; the automatic control system controls the opening and closing degree of the valve according to the real-time flow data, thereby automatically controlling the intake and supply process of the regeneration gas.

7. The activated carbon regeneration device for blast furnace gas desulfurization according to claim 4 is characterized in that: The gas detection and analysis system is a gas chromatograph detector.

Images