CN108147409B - A production equipment for physical activation of activated carbon and its application - Google Patents

Abstract

The invention discloses a production equipment for physical activation of activated carbon and its application. The equipment includes an activation furnace. The top of the activation furnace is provided with a feed inlet and an activation tail gas outlet. The inner chamber of the activation furnace is divided into a connected activation chamber and Separation chamber; the bottom of the activation chamber and the separation chamber are equipped with water vapor inlets, the air pressure in the activation chamber is greater than the pressure in the separation chamber; the bottom of the separation chamber is provided with a discharge port; the high-temperature heat carrier delivery pipe passes through the ash outlet and the separation chamber The room is connected, the bottom of the high-temperature heat carrier delivery pipe is equipped with a blower device, and the top of the high-temperature heat carrier delivery pipe is connected to the activation furnace; the waste heat boiler is connected to the steam inlet through the steam pipe, and the combustion chamber of the waste heat boiler is respectively passed through The first waste heat pipe and the second waste heat pipe communicate with the activated tail gas outlet and the high-temperature heat carrier delivery pipe. The purpose of the invention is to solve the problems of high price, complicated structure and low product conversion rate of the existing activation furnace.

Description

A production equipment for physical activation of activated carbon and its application

technical field

The invention relates to the technical field of activated carbon production equipment, in particular to a production equipment for physical activation of activated carbon and its application.

Background technique

There are two main methods of producing activated carbon: one is the chemical activation method using powdery woody raw materials such as bamboo and sawdust, using zinc chloride or phosphoric acid as the active agent; the other is using wood (bamboo) charcoal and fruit shell charcoal. , wood (bamboo) shavings charcoal, etc. as raw materials, using water vapor or flue gas as the physical activation method of the activator. Due to the increasing protection of forest resources in our country, charcoal resources are decreasing day by day. In addition, with the increasing demand for activated carbon production for raw materials of fruit shells, the supply of charcoal and shell charcoal raw materials for activated carbon produced by steam physical methods is in short supply.

The physical activation method is generally divided into two steps: carbonization and activation. First, the raw material is carbonized at about 500 ° C, and then activated at high temperature with water vapor or carbon dioxide and other gases. The activation process is carried out in a special activation furnace. At present, the equipment for producing activated carbon by physical activation generally uses Sleep activation furnace, rotary activation furnace and rake activation furnace.

Sleep activation furnace is an activation equipment introduced by our country in the 1950s. After several generations of domestic scientific research personnel have been continuously improved and perfected, the process technology has been very mature. At present, Sleep furnace is mainly used by domestic coal-based activated carbon production enterprises. Activate the device. Its main advantage is that no external heating source is required during normal production, and the water gas generated during activation maintains the thermal balance of the activation furnace itself through combustion, while low power consumption; it can simultaneously produce multiple types of activated carbon raw materials, which is very suitable for the domestic and foreign activated carbon market. The demand adaptability is relatively good; easy to control, stable operation, small daily maintenance workload; long activation time, about 72 hours, excellent and uniform product quality; long service life of equipment (production of coal-based activated carbon can generally be used for 6-9 years). The main disadvantages of the Sleep furnace are the low conversion rate of a single set of equipment, the complex structure of the activation furnace, the long construction period, the difficulty of starting and stopping the furnace, the slow replacement of raw materials and the adjustment of the process, and the difficulty in realizing mechanized production. Bulk density has certain requirements.

The method of using the rotary activation furnace to make activated carbon is to add the sawdust raw material from one end of the rotary furnace, dry, carbonize and activate it in the rotary furnace, and discharge the material from the other end of the rotary furnace. There are two defects: one is the converter. The airflow of the converter flows towards the discharge end. The temperature of the feed end of the converter is relatively low, and the wood chips are not easy to be dried and carbonized, so combustible gas cannot be produced. Therefore, it is difficult to increase the temperature of the feed end of the converter. Good effect, when the sawdust is transported to the higher temperature part with the rotation of the converter, it is easy to catch fire when it meets the air and reduces the yield of activated carbon. The drying, carbonization and activation of the sawdust are all carried out in the latter part of the converter, and the activation zone is short , the activation time in the converter is short, the activation time is about 15 hours, which affects the activation effect and product quality; second, the water vapor generated during the drying process of wood chips is mixed with the combustible gas generated during carbonization, which will reduce the combustible gas flammability; the rotary activation furnace consumes a lot of energy, the production capacity of a single equipment is small, the process adjustment and control are difficult, and the product quality is unstable.

The rake-type activation furnace uses continuously rotating furnace rake arms and rake teeth to turn the materials in the furnace, so that the materials can be evenly turned and fully contacted with water vapor at high temperature to ensure uniform activation and stable product quality. The rake activation furnace is the most advanced activation equipment at present. It overcomes the randomness and incompleteness of manual turning, has a high degree of mechanization and automation, and greatly reduces labor intensity. One worker can operate multiple activation furnaces, but the price of the rake activation furnace Expensive, large investment in equipment, limited popularity in China, and materials in the furnace have certain wear and pulverization, and there are dead ends, especially in the production of small particle size or powdered activated carbon.

Contents of the invention

The object of the present invention is to provide a production equipment for physical activation of activated carbon and its application to solve the problems of high price, complex structure and low activation efficiency of activated carbon produced by the existing activation furnace.

During the activation process, the carbonized material reacts with the carbonized material at high temperature with a mild oxidizing gas such as water vapor, carbon dioxide or air, and the C atoms inside the carbonized material combine with the activator and escape in the form of CO+H ₂ or CO. To form a pore structure, the activation reaction equation is as follows:

C+2H ₂ O→2H ₂ +CO ₂ ΔH＝18kcal

C+H ₂ O→H ₂ +CO ΔH＝31kcal

CO ₂ +C→2CO ΔH＝18kcal

It can be seen from the above three chemical reaction formulas that all three reactions are endothermic reactions, that is, as the activation reaction proceeds, the temperature in the activation reaction area of the activation furnace will gradually decrease. If the temperature in the activation area is lower than 800 ° C, the above The activation reaction cannot be carried out normally, so in the activation reaction area of the activation furnace, it is necessary to feed part of the oxidizing gas and the gas generated by the activation to supplement the heat at the same time, or to supplement the external heat source to ensure the activation temperature of the activation reaction area of the activation furnace.

To achieve the above object, the technical solution of the present invention is:

A production equipment for physical activation of activated carbon, which is also suitable for physical activation of activated coke, and the equipment includes:

An activation furnace, the top of the activation furnace is provided with a feed inlet and an activation tail gas outlet, and a partition is arranged in the activation furnace, and the partition divides the inner cavity of the activation furnace into an activation chamber and a separation chamber; the activation chamber and The bottom of the separation chamber is provided with water vapor inlet, the vapor pressure in the activation chamber is greater than the vapor pressure in the separation chamber; the bottom of the separation chamber is provided with a discharge port;

High-temperature heat carrier delivery pipe, the high-temperature heat carrier delivery pipe communicates with the separation chamber through the ash outlet, the bottom of the high-temperature heat carrier delivery pipe is provided with a blower device, and the top of the high-temperature heat carrier delivery pipe is connected to the activation furnace; The side of the pipe is connected to the temperature control feeder;

A waste heat boiler, the waste heat boiler communicates with the water vapor inlet through a steam pipe, and the combustion chamber of the waste heat boiler communicates with the activated tail gas outlet and the high-temperature heat transfer pipe through the first waste heat pipe and the second waste heat pipe respectively .

Through the above technical scheme, it is possible to realize the movement of materials from top to bottom, and the movement of water vapor from bottom to top, so that the gas (steam) and solids can reach good contact and fusion, and the activation reaction efficiency can be effectively improved; by adjusting the air pressure in the separation chamber The principle of being able to separate particles of different quality realizes that part of the reacted ultrafine particles can be circulated into the activation furnace through the high-temperature heat carrier delivery pipe as a heat carrier to play the role of heat-conducting material; the activation tail gas generated in the activation furnace and The high-temperature flue gas generated in the high-temperature heat transfer pipe is passed into the waste heat boiler as fuel to produce water vapor, achieving the effect of waste gas recycling.

In one embodiment, the top of the high-temperature heat carrier delivery pipe is connected to the activation furnace through a heat carrier reserved chamber, and the heat carrier reserved room is connected to a combustion chamber of a waste heat boiler through a second waste heat pipe.

Through the above technical solution, the gas-solid conduction between the high-temperature heat carrier delivery pipe, the activation furnace and the waste heat boiler can be better realized.

In one embodiment, an ignition device is provided on the high-temperature heat carrier delivery pipe.

Through the above technical solution, the combustion of the material in the high-temperature heat carrier delivery pipe can be realized.

In one embodiment, a slag outlet is provided at the bottom of the high-temperature heat transfer pipe.

Through the above technical proposal, the discharge of waste slag in the high-temperature heat carrier delivery pipe can be realized.

In one embodiment, manholes are arranged on the side wall of the activation furnace.

Through the above technical scheme, people enter the activation furnace through the manhole to check and maintain the activation furnace.

In one embodiment, secondary air supply holes are provided in the middle of the activation furnace.

Through the above technical proposal, through the secondary air supply hole to ventilate into the activation furnace, the material can be more fully contacted with the gas to ensure the quality of the product.

In one embodiment, the angle formed by the ash outlet cylinder and the axis of the activation furnace is greater than 0°C and less than 90°C.

Through the above technical scheme, it is beneficial for the ultrafine particles in the separation chamber to be introduced into the high-temperature heat carrier delivery pipe.

In one embodiment, waste heat pipe control valves are installed on the first waste heat pipe and the second waste heat pipe.

Through the above technical proposal, it is beneficial to the control of the air flow in the first waste heat pipeline and the second waste heat pipeline, and is conducive to safe production.

In one embodiment, a water vapor control valve is installed on the water vapor pipe.

Through the above technical solution, the amount of water vapor entering the activation chamber and the separation chamber is controlled by the water vapor control valve, thereby adjusting the air pressure in the activation chamber and the separation chamber.

A kind of method that adopts the production equipment of a kind of activated carbon physical activation to prepare activated carbon, described method comprises:

The material is fed into the furnace from the feed port of the activation furnace, and the water vapor required for activation is introduced into the furnace from the bottom of the activation furnace through the water vapor tube to fuse with the material. The vapor pressure is greater than the vapor pressure in the separation chamber. The material particles enter the separation chamber from the activation chamber, and the particles entering the separation chamber are separated into suspended particles and sedimentary particles; /or burn under the action of the blast device to form flue gas and high-temperature solid heat carrier, the flue gas is transported to the combustion chamber of the waste heat boiler through the second waste heat pipe, and the high-temperature solid heat carrier enters the activation furnace from the top of the activation furnace as a heat source for heat conduction The added raw materials participate in the activation reaction together; the deposited particles are continuously discharged through the discharge port;

The high-temperature activated tail gas generated during the activation reaction is transported from the outlet of the activated tail gas to the combustion chamber of the waste heat boiler through the first waste heat pipe; the high-temperature activated tail gas and hot flue gas are transported to the combustion chamber of the waste heat boiler to generate The water vapor as the water vapor required for activation participates in the activation reaction.

Through the above technical scheme, it is necessary to use a small amount of materials and igniters as reaction raw materials in the early stage of activation to generate energy as the initial reaction energy, and use a small amount of energy to act on the waste heat boiler to generate water vapor to start the reaction, and there is no need to supplement external energy in the middle and late stages of activation , only need to use a part of the material as a circulating heat carrier to provide an external heat source for the activation reaction, and recycle the waste heat and tail gas generated in the reaction process to prepare water vapor, and the generated water vapor will participate in the reaction as an activator required for activation. The principle of thermal balance forms a self-sufficient circulation system.

The present invention has the following advantages:

The present invention uses the principle of thermal balance to calculate, and uses the fine material particles in the material as the circulating heat carrier to heat (heat conduct) the raw material. The bottom of the activation furnace is fed with water vapor, and the top is fed with materials to form a vertical heat cycle, so that the equipment has high heat transfer efficiency. , the characteristics of good gas-solid fusion can accelerate activation and shorten the activation time; the present invention has simple structure, low cost, large production capacity, high product quality, and can produce granular activated carbon and powder activated carbon. These advantages make the present invention more effective than rake activation furnace Activation equipment such as Sleep activation furnace and rotary activation furnace have more obvious advantages.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

Example 1

A kind of activated carbon physical activation production equipment as shown in Fig. 1 comprises activation furnace 1, high-temperature heat carrier delivery pipe 3 and waste heat boiler 12, activation furnace 1 is vertical and vertical to the ground, and high-temperature heat carrier delivery pipe 3 is perpendicular to the ground set up;

The top of the activation furnace 1 is provided with a feed inlet 10 and an activation tail gas outlet 11, and the activation reaction material is dropped into the activation furnace 1 from the feed inlet 10, and the activation tail gas generated by activation is discharged through the activation tail gas outlet 11, and the bottom of the activation furnace 1 A water vapor inlet is provided, and the water vapor required for activation enters the activation furnace 1 from bottom to top through the water vapor inlet. The activation furnace 1 is provided with a partition 2, and the partition 2 separates the bottom inner cavity of the activation furnace 1 into interconnected Activation chamber 4 and separation chamber 9, the effect of dividing plate 2 prevents the suspended material in separation chamber 9 from returning in activation chamber 4; The bottom of described activation chamber 4 and separation chamber 9 is all provided with steam inlet, and described activation chamber The vapor pressure in 4 is greater than the vapor pressure in the separation chamber 9, and the air pressure in the activation chamber 4 and the separation chamber 9 is controlled by adjusting the water vapor flow rate entering the activation chamber 4 and the separation chamber 9. The air pressure in the activation chamber 4 is greater than the air pressure in the separation chamber 9 In the case that the material in the activation chamber 4 enters the separation chamber 9 smoothly under the condition that the air pressure difference exists; the bottom of the separation chamber 9 is provided with a discharge port 5;

The high-temperature heat carrier delivery pipe 3 communicates with the separation chamber 9 through the ash outlet 6, and the materials entering the separation chamber 9 are affected by the reduction of the air pressure. The materials with small mass form suspended particles under the air pressure, and the materials with large mass are under the pressure of gravity. The deposited particles are formed under the action, and the deposited particles are discharged from the discharge port 5 at the bottom of the separation chamber 9, and the suspended small particles enter the high-temperature heat carrier delivery pipe 3 through the ash outlet 6, and the bottom of the high-temperature heat carrier delivery pipe 3 is provided with a blower device 7. The blower device 7 provides the gas required for the combustion of the suspended particles, and at the same time provides the lifting force for the movement of the high-temperature heat carrier in the high-temperature heat carrier delivery pipe 3. The top of the high-temperature heat carrier delivery pipe 3 is preheated by the heat carrier. The retention chamber 18 is in communication with the activation furnace 1, and the high-temperature solid heat carrier and flue gas generated by the combustion of the suspended particles in the high-temperature heat transfer pipe 3 enter the heat carrier reserved chamber 18, because the heat carrier reserved chamber 18 is connected to the activation furnace 1 Conduction, the high-temperature solid heat carrier entering the heat carrier reserve chamber 18 then enters the activation furnace 1, conducts heat to the newly added raw material, mixes it with the material in the activation chamber 4, and increases the temperature of the activation reaction area. The reserved room 18 communicates with the combustion chamber of the waste heat boiler 12 through the second waste heat pipe 17; the side of the high-temperature heat carrier delivery pipe 3 is connected to the temperature control feeder 8, and the activation furnace can be lifted by the feed temperature control machine 8 The supplementary fuel required by the temperature, such as superfine powder raw material, is added in the high-temperature heat carrier delivery pipe 3;

The waste heat boiler 12 communicates with the water vapor inlet through a water vapor pipe 14, and a water vapor control valve is installed on the water vapor pipe 14, and the water vapor pipes 14 leading to the activation chamber 4 and the separation chamber 9 are respectively installed There are a first water vapor control valve and a second water vapor control valve, through which the pressures of the activation chamber 4 and the separation chamber 9 are respectively adjusted, and the combustion chamber of the waste heat boiler 12 is respectively passed through the second water vapor control valve. A waste heat pipe 13 and a second waste heat pipe 17 communicate with the activated tail gas outlet 11 and the high-temperature heat carrier delivery pipe 3, and pass the tail gas generated in the activation furnace 1 and the high-temperature heat carrier delivery pipe 3 into the waste heat boiler 12 is used as fuel to heat water to achieve the effect of waste gas recycling.

The high-temperature heat carrier delivery pipe 3 is provided with an ignition device 19 , and the igniter or supplementary fuel is ignited by the ignition device 19 , thereby realizing the combustion of the material in the high-temperature heat carrier delivery pipe 3 .

The bottom of the high-temperature heat carrier delivery pipe 3 is provided with a slag outlet 20, and the large particle material overflowing in the high-temperature heat carrier delivery pipe 3 cannot be lifted, which affects the heat cycle efficiency and forms some slag materials. Discharge of waste slag in the heat transfer pipe.

A manhole 15 is arranged on the side wall of the activation furnace 1, and a person can enter the activation furnace through the manhole 15 to check and maintain the activation furnace 1.

The middle part of the activation furnace 1 is provided with a secondary air supply hole 16. The material located in the upper middle part of the activation furnace 1 may not have sufficient contact with the water vapor introduced from the bottom. In order to ensure the quality of the product, the secondary air supply hole 16 is used to activate Ventilation in the furnace 1 can realize more sufficient gas-solid fusion of materials.

The angle formed by the ash outlet tube 6 and the axis of the activation furnace 1 is greater than 0°C and less than 90°C, which is beneficial for fine particles in the separation chamber 9 to be introduced into the high-temperature heat carrier delivery pipe 3 .

Both the first waste heat pipe 13 and the second waste heat pipe 17 are equipped with waste heat pipe control valves, which is conducive to the control of the air flow in the first waste heat pipe 13 and the second waste heat pipe 17, and is conducive to safe production.

The method for preparing activated carbon by adopting the production equipment of the activated carbon physical activation is as follows:

In the initial stage of activation, add the igniter and some fine materials to the high-temperature heat carrier delivery pipe 3 through the temperature-controlled feeder 8, open the blast device 7, and ignite through the ignition device 19, and the fine materials are discharged in the high-temperature heat carrier delivery pipe 3. After being heated and burned, it enters the heat carrier reserved room 18, and the flue gas generated by the combustion enters the combustion chamber of the waste heat boiler 12 through the second waste heat pipe 17, and the heated fine material and the material added from the feed port 10 are fed from the upper And enter the activation furnace 1 from the bottom, open the water vapor control valve at the same time, the water vapor enters the activation chamber 4 and the separation chamber 9 from bottom to top, and the activation reaction starts when the activation temperature and the water vapor meet the conditions;

In the middle and late stage of activation, the material is added into the furnace from the feed port 10 of the activation furnace 1, and the water vapor required for activation is passed through the steam pipe 14 from the bottom of the activation furnace 1 into the furnace to fuse with the material, and the mass of the material is formed due to the movement and collision. Different particles, control the air pressure in the activation chamber 4 to be greater than the air pressure in the separation chamber 9, the particles enter the separation chamber 9 from the activation chamber 4, and the particles entering the separation chamber 9 are separated into suspended particles and sedimentary particles; the suspended particles pass through the ash outlet 6 It is transported to the high-temperature heat carrier delivery pipe 3, and is combusted under the action of the blast device to form flue gas and high-temperature solid heat carrier. The heat carrier enters the activation furnace 1 from the top of the activation furnace 1 and serves as a heat source to conduct heat to the newly added raw materials, and participates in the activation reaction together; the deposited particles are continuously discharged through the discharge port 5;

The high-temperature activated tail gas generated during the activation reaction is transported from the activated tail gas outlet 11 to the combustion chamber of the waste heat boiler 12 through the first waste heat pipe 13; The water vapor generated in the waste heat boiler 12 is used as an activator required for activation to participate in the activation reaction.

The energy for raising the temperature of the raw materials required for the activation reaction comes from the combustion of the suspended particles, and the suspended particles are recycled into the activation furnace to conduct heat to the newly added raw materials; the energy for generating the activator (water vapor) comes from the waste heat of the suspended particles combustion and the activation reaction The displaced high-temperature activated exhaust gas, such as hydrogen, carbon monoxide and methane, is combustible.

Although the present invention has been described in detail with general descriptions and specific examples above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, the modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the protection scope of the present invention.

Claims (10)

1. A kind of production equipment of activated carbon physical activation is characterized in that, its equipment comprises: Activation furnace (1), the top of the activation furnace (1) is provided with a feed inlet (10) and an activation tail gas outlet (11), the activation furnace (1) is provided with a partition (2), and the partition (2) will The inner cavity of the activation furnace (1) is divided into a connected activation chamber (4) and a separation chamber (9); the bottoms of the activation chamber (4) and the separation chamber (9) are provided with water vapor inlets, and the activation The air pressure in the chamber (4) is greater than the air pressure in the separation chamber (9); the bottom of the separation chamber (9) is provided with a discharge port (5); The high-temperature heat carrier delivery pipe (3), the high-temperature heat carrier delivery pipe (3) communicates with the separation chamber (9) through the ash outlet (6), and the bottom of the high-temperature heat carrier delivery pipe (3) is provided with a blower device (7 ), the top of the high-temperature heat carrier delivery pipe (3) is connected to the activation furnace (1); the side of the high-temperature heat carrier delivery pipe (3) is connected to a temperature-controlled feeder (8); A waste heat boiler (12), the waste heat boiler (12) is connected to the water vapor inlet through a steam pipe (14), and the combustion chamber of the waste heat boiler (12) passes through the first waste heat pipe (13) and the second waste heat pipe (13) respectively. The waste heat pipeline (17) communicates with the activated tail gas outlet (11) and the high-temperature heat carrier delivery pipe (3). 2. The production equipment of a kind of activated carbon physical activation as claimed in claim 1, is characterized in that, the top of described high-temperature heat carrier delivery pipe (3) conducts with activation furnace (1) through heat carrier reserve chamber (18) , the heat carrier reserved chamber (18) communicates with the combustion chamber of the waste heat boiler (12) through the second waste heat pipe (17). 3. The production equipment for physical activation of activated carbon according to claim 1, characterized in that, an ignition device (19) is arranged on the high-temperature heat carrier delivery pipe (3). 4. The production equipment for physical activation of activated carbon according to claim 1, characterized in that a slagging outlet (20) is provided at the bottom of the high-temperature heat transfer pipe (3). 5. The production equipment of a kind of activated carbon physical activation as claimed in claim 1, characterized in that, manholes (15) are arranged on the side wall of the activation furnace (1). 6. The production equipment for physical activation of activated carbon according to claim 1, characterized in that, a secondary air supply hole (16) is arranged in the middle of the activation furnace (1). 7. The production equipment for physical activation of activated carbon according to claim 2, characterized in that the angle formed by the ash discharge cylinder (6) and the axis of the activation furnace (1) is greater than 0°C and less than 90°C. 8 . The production equipment for physical activation of activated carbon according to claim 1 , characterized in that, waste heat pipe control valves are installed on the first waste heat pipe ( 13 ) and the second waste heat pipe ( 17 ). 9. The production equipment of a kind of activated carbon physical activation as claimed in claim 1, characterized in that, a water vapor control valve is installed on the water vapor pipe (14). 10. A method that adopts the production equipment of activated carbon physical activation according to any one of claims 1-9 to prepare activated carbon, is characterized in that, the method comprises: The material is fed into the furnace from the feed port (10) of the activation furnace (1), and the water vapor required for activation passes through the water vapor tube (14) from the bottom of the activation furnace (1) into the furnace to fuse with the material. Collision forms particles with different masses, and the air pressure in the activation chamber (4) is controlled to be greater than the air pressure in the separation chamber (9). The particles enter the separation chamber (9) from the activation chamber (4), and the particles entering the separation chamber (9) are separated into suspended particles and deposited particles; the suspended particles are transported to the high-temperature heat transfer pipe (3) through the ash outlet (6), and burnt under the action of the blast device (7) to form flue gas and high-temperature solid heat carrier, and the flue gas passes through The second waste heat pipe (17) is transported to the combustion chamber of the waste heat boiler (12), and the high-temperature solid heat carrier enters the activation furnace (1) from the top of the activation furnace (1) as a heat source, and heat conducts the newly added raw material to heat up and participate in the activation reaction; The deposited particles are continuously discharged through the discharge port (5); the activation temperature is controlled by a temperature-controlled feeder (8); The high-temperature activated tail gas generated during the activation reaction is sent from the activated tail gas outlet (11) to the combustion chamber of the waste heat boiler (12) through the first waste heat pipe (13); the high-temperature activated tail gas and flue gas are sent to the waste heat boiler (12) The heat generated by combustion in the combustion chamber acts on the steam generated by the waste heat boiler (12) to participate in the activation reaction as an activator required for activation.

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