A highly efficient gas-solid continuous flow reaction method and device

Abstract

The present invention relates to the technical field of gas-solid continuous reaction, and in particular to an efficient gas-solid continuous flow reaction method, comprising the following steps: the first step is to set a spiral pipe section, the spiral pipe section includes an inlet end and an outlet end, a temperature control device is arranged outside the spiral pipe section, the inlet end is connected to a feeding pipeline, a feeding mechanism is arranged at the middle of the feeding pipeline, the feeding pipeline is connected to a gas supply mechanism, and a gas-solid separator is arranged on the outlet end; the second step is to preheat the spiral pipe section to reach a preset temperature; the third step is to input powder materials and pass high-speed reaction gas; the fourth step is to output the powder materials passing through the spiral pipe section from the outlet end into the gas-solid separator to achieve separation. It solves the technical problem that micro-nano viscous powders with poor dispersibility cannot be subjected to efficient continuous reactions, and is suitable for gas-solid continuous flow reactions with longer reaction residence times. Based on this, an efficient gas-solid continuous flow reaction device is proposed.

Description

Technical Field

[0001] The invention relates to the technical field of gas-solid continuous reaction, and in particular to an efficient gas-solid continuous flow reaction method and device. Background Art

[0002] At present, many common industrial products in our lives are made through gas-solid reactions. Gas-solid reactions play an important role in industrial production, such as iron oxidation, carbon combustion and gasification, the reaction of calcium oxide, magnesium oxide and sulfur dioxide, the reduction of metal oxides, and the preparation of silicon nitride ceramics. In recent years, with the focus on efficient energy utilization and greenhouse gas carbon dioxide emission reduction, people have applied gas-solid reactions to carbon dioxide capture, hydrogen production and nanocombustion, such as the removal of carbon dioxide using solid adsorbents, chemical chain combustion based on metal oxygen carriers, iron-steam hydrogen production, metal micron / nanoparticle combustion, and solar hydrogen production.

[0003] Traditional gas-solid reactions are mainly achieved through fixed bed and gas-solid fluidized bed equipment. However, fixed bed reactors generally have problems such as low gas-solid contact efficiency, easy agglomeration of reactants and low reaction efficiency, and it is difficult to achieve continuous feeding and discharging and reaction.

[0004] Although the fluidized bed gas-solid reactor has high gas-solid contact efficiency and high reaction efficiency, it still has problems such as being unable to achieve continuous gas-solid reaction and material loading and unloading. Especially for micro-nano powders, due to the high inter-particle force, the powders are prone to agglomeration, and the solids have poor dispersion in the gas, which easily forms channeling or surging, thus seriously affecting the fluidization effect and reaction quality. Therefore, it is still difficult for traditional gas-solid fluidized bed reactors to achieve efficient continuous reaction and industrial application of gas-solid reactants.

[0005] Although some ideas and devices for gas-solid continuous reaction have been proposed, such as a continuous fluidized bed device (CN207822991.U), a new gas-solid continuous reaction device (CN218530866.U) and a device and method for preparing chlorinated polyvinyl chloride by continuous gas-solid phase method (CN104971668B), etc., the above devices and methods are basically only applicable to reactions with good fluidity of solid powder and fast gas-solid reaction time.

[0006] Therefore, in response to the above problems and defects, a new method and device for gas-solid continuous reaction that can be applied to micro-nano viscous powders with poor dispersibility and requires a longer reaction residence time is proposed, which is of great significance to industrial production. Summary of the invention

[0007] Therefore, in view of the above problems, the present invention proposes an efficient gas-solid continuous flow reaction method, which solves the technical problem that micro-nano viscous powder with poor dispersibility cannot be efficiently and continuously reacted. Based on this, an efficient gas-solid continuous flow reaction device is proposed.

[0008] To achieve the above object, the present invention adopts the following technical solution: an efficient gas-solid continuous flow reaction method, comprising the following steps:

[0009] The first step is to set a spiral pipe section, the spiral pipe section includes an inlet end located at the bottom and an outlet end located at the top, a temperature control device for controlling the stability of the spiral pipe section is arranged outside the spiral pipe section, the inlet end is connected to a feeding pipeline, a feeding mechanism is arranged at the middle of the feeding pipeline, the feeding mechanism is used to realize the quantitative input of powdered materials, the feeding pipeline is connected to a gas supply mechanism on the side away from the inlet end of the spiral pipe section, the gas supply mechanism is used to supply quantitative / constant speed high-speed reaction gas, and a gas-solid separator is arranged on the outlet end;

[0010] The second step is to preheat the spiral pipe section to reach a preset temperature;

[0011] The third step is to input powder materials and introduce high-speed reaction gas, and use the reaction gas to input the powder materials into the spiral pipe section in a dilute phase transport mode, so that the powder materials and the reaction gas rise in a spiral along the spiral pipe section and undergo a chemical reaction;

[0012] In the fourth step, the powder material passing through the spiral pipe section is output from the outlet end into the gas-solid separator for separation.

[0013] Furthermore, in the second step, the preset temperature is 25-600°C.

[0014] Furthermore, the reaction gas is introduced at a speed of 5-20 m / s.

[0015] Furthermore, in the fourth step, the unused reaction gas after separation is introduced into the gas supply mechanism for recycling.

[0016] Furthermore, the spiral pipe section includes a lower pipe section close to the inlet end, an upper pipe section close to the outlet end, and an intermediate pipe section connecting the lower pipe section and the upper pipe section. The temperature of the lower pipe section is 80%-90% of the preset temperature, the temperature of the intermediate pipe section is the preset temperature, the temperature of the upper pipe section is 85%-95% of the preset temperature, the length of the lower pipe section is 10%-20% of the total length of the spiral pipe section, and the length of the upper pipe section is 10%-20% of the total length of the spiral pipe section.

[0017] Furthermore, the axial pitch of the spiral pipe segment is 50mm-100mm, the pipe radius of the spiral pipe segment is 10mm-50mm, and the spiral radius of the spiral pipe segment is 250mm-2000mm.

[0018] Furthermore, the feeding mechanism includes a precision feeding component arranged on the feeding pipe, a storage bin arranged on the precision feeding component and a vibrating feeder arranged on the storage bin. A pressure reducing valve is arranged on the side of the feeding pipe away from the spiral pipe section, and a flow meter is arranged between the pressure reducing valve and the feeding mechanism.

[0019] Furthermore, the feed pipeline is sequentially arranged into a straight pipe section, an enlarged connection section, an expansion section and a reduction connection section from the feed gas mechanism to the spiral pipe section, and the feed mechanism is arranged at a position on the reduction connection section close to the expansion section, and the diameter of the expansion section is 1.2 to 1.6 times the diameter of the straight pipe section.

[0020] Furthermore, a plurality of guide protrusions are provided on the inner wall of the extension portion to form a spiral shape of the passing airflow.

[0021] A highly efficient gas-solid continuous flow reaction device comprises a device for executing a highly efficient gas-solid continuous flow reaction method.

[0022] By adopting the above technical solution, the beneficial effects of the present invention are:

[0023] 1. This solution disperses the powder material by entraining it with high-speed reaction gas, which solves the problem of easy agglomeration and poor dispersion of powder in the past. It has better gas-solid contact and realizes full reaction between reaction gas and powder material.

[0024] The powder material is entrained by the high-speed reaction gas from the inlet end of the spiral tube section, enters the spiral high-temperature tube section for reaction, and finally outputs from the outlet end, and then enters the gas-solid separator for separation, thereby obtaining a completely reacted product. The entire reaction process is continuous and efficient, solving the problem of previous inability to operate continuously.

[0025] 2. The preset temperature is 25-600°C, and the temperature is set according to the actual reaction needs. The reaction gas introduction speed is 5-20m / s, and the introduction amount can be set according to the actual reaction needs. The length of the spiral pipe section can also be set according to actual needs.

[0026] 3. The setting of the lower pipe section, the middle pipe section and the upper pipe section is not strictly separated, but is only separated in height or length, and the temperature of the lower pipe section, the middle pipe section and the upper pipe section is controlled by an external temperature control device, wherein the middle pipe section is at a preset temperature, the temperature of the lower pipe section is 80%-90% of the preset temperature, and the temperature of the upper pipe section is 85%-95% of the preset temperature.

[0027] The purpose of this setting is to use the lower pipe section as a preheating device to prevent certain powder materials that require high temperature reactions from being unable to adapt to the severe high temperature environment when they directly enter the high temperature environment, resulting in inactivation, decomposition or deterioration. Powder materials directly entering the high temperature area may cause safety hazards due to excessive temperature differences, such as equipment damage or material explosion caused by thermal stress. The preheating process can significantly reduce these safety hazards and make the production process safer and more reliable.

[0028] The cooling of the upper pipe section is mainly used to cooperate with the gas-solid separator and subsequent material cooling, and can enhance the physical stability of the completely reacted materials so that they can be output and avoid unnecessary reactions with the external environment after output.

[0029] 4. Among them, the axial pitch of the spiral pipe segment is 50mm-100mm, the pipe radius of the spiral pipe segment is 10mm-50mm, and the spiral radius of the spiral pipe segment is 250mm-2000mm. This is a set of better settings, which can of course be adjusted according to actual needs, and the total length of the spiral pipe segment can also be adjusted according to actual needs.

[0030] 5. The setting of precise feeding components, storage bins and vibrating feeders can realize the preliminary dispersion of powder materials, so that they are in a basic dispersed state when entering the feeding pipeline, and then use high-speed reaction gas to achieve complete dispersion.

[0031] 6. The arrangement of the straight pipe section, the enlarged connection section, the expansion section and the reduced connection section can make the airflow form a partial cluster state, which is more conducive to the dispersion of the powder material. In addition, a plurality of guide protrusions are arranged on the expansion section, and the guide protrusions can be used to make part of the high-speed reaction gas blown in form a spiral shape. Such an airflow drives the powder material to enter the spiral pipe section with a better flow effect, and the reaction can be more sufficient, and the reaction effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the present invention.

[0033] Figure 2 It is a structural schematic diagram of the spiral pipe section divided into three areas.

[0034] Figure 3 is a schematic diagram of a spiral pipe segment.

[0035] Figure 4 It is a schematic diagram of the cross-sectional structure of the extension part.

[0036] Figure 5 It is a structural schematic diagram of the cross section of the extension part.

[0037] Figure 6 It is a structural diagram of the airflow state of the feed pipeline.

[0038] Reference numerals:

[0039] 1. Spiral pipe section; 11. Inlet end; 12. Outlet end; 13. Lower pipe section; 14. Middle pipe section; 15. Upper pipe section; 2. Temperature control device; 3. Feed pipeline; 31. Straight pipe section; 32. Enlarged connection part; 33. Extension part; 34. Reduced connection part; 35. Guide protrusion; 4. Feeding mechanism; 41. Precision feeding assembly; 42. Storage bin; 43. Vibrating feeder; 5. Air supply mechanism; 6. Gas-solid separator; 7. Pressure reducing valve; 8. Flow meter. DETAILED DESCRIPTION

[0040] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0041] refer to Figures 1 to 6 The present embodiment provides an efficient gas-solid continuous flow reaction device, including a spiral pipe segment 1, wherein the spiral pipe segment 1 includes an inlet end 11 located at the bottom and an outlet end 12 located at the top, and a temperature control device 2 for controlling the stability of the spiral pipe segment 1 is arranged outside the spiral pipe segment 1, and the inlet end 11 is connected to a feeding pipe 3, and a feeding mechanism 4 is arranged at the middle of the feeding pipe 3, and the feeding mechanism 4 is used to realize the quantitative input of powdered materials, and the feeding pipe 3 is connected to a gas supply mechanism 5 on the side away from the inlet end 11 of the spiral pipe segment 1, and the gas supply mechanism 5 is used to supply a quantitative / constant speed high-speed reaction gas, and a gas-solid separator 6 is arranged on the outlet end 12.

[0042] The spiral pipe section 1 includes a lower pipe section 13 near the inlet end 11, an upper pipe section 15 near the outlet end 12, and an intermediate pipe section 14 connecting the lower pipe section 13 and the upper pipe section 15. The temperature of the lower pipe section 13 is 80%-90% of the preset temperature, the temperature of the intermediate pipe section 14 is the preset temperature, and the temperature of the upper pipe section 15 is 85%-95% of the preset temperature. The length of the lower pipe section 13 is 10%-20% of the total length of the spiral pipe section 1, and the length of the upper pipe section 15 is 10%-20% of the total length of the spiral pipe section 1. Figure 3As shown, the axial pitch b of the spiral pipe segment 1 is 50mm-100mm, the pipe radius ra of the spiral pipe segment 1 is 10mm-50mm, and the spiral radius rc of the spiral pipe segment 1 is 250mm-2000mm.

[0043] Of course, the spiral pipe section 1 may not be differentiated, so that the control of the temperature control device 2 does not need to differentiate the temperature zones accordingly.

[0044] The feeding mechanism 4 includes a precise feeding component 41 arranged on the feeding pipe 3, a storage bin 42 arranged on the precise feeding component 41, and a vibrating feeder 43 arranged on the storage bin 42. A pressure reducing valve 7 is arranged on the side of the feeding pipe 3 away from the spiral pipe section 1, and a flow meter 8 is arranged between the pressure reducing valve 7 and the feeding mechanism 4.

[0045] The feed pipe 3 is sequentially arranged from the feed gas mechanism to the spiral pipe section 1 into a straight pipe section 31, an enlarged connection section 32, an expansion section 33 and a reduced connection section 34. The feed mechanism 4 is arranged on the reduced connection section 34 at a position close to the expansion section 33. The diameter of the expansion section 33 is 1.2 to 1.6 times the diameter of the straight pipe section 31. A plurality of guide protrusions 35 are arranged on the inner wall of the expansion section 33 to make the passing airflow form a spiral shape. Figure 4 , Figure 5 As shown, the number of guide protrusions 35 is set to three, which can also be set according to actual needs. By setting multiple guide protrusions 35, the high-speed reaction gas can generate a certain spiral when flowing through, thereby driving the overall airflow to form a certain spiral state. This spiral state can not only achieve better dispersion, but also reduce the strong impact of powder materials on the inner wall, reduce vibration and noise. Moreover, when the spiral airflow passes through the spiral pipe section 1, it can present a better flow effect, so that the reaction effect is better. For example Figure 6 As shown, when the high-speed reaction gas passes through the feed pipe 3, the airflow will have a diffusion effect starting from the expansion connection portion 32, and then when passing through the expansion portion 33, it will be affected by the guide protrusion 35 to produce a certain spiral state, and then pass through the reduction connection portion 34 to form a certain clustering posture, and then enter the spiral pipe section 1. Here, the diameter of the expansion portion 33 should be limited, and it should not be too large or too small. If it is too large or too small, it will lead to poor spiral effect of the airflow and poor clustering effect of the airflow. In this solution, the value is 1.5 times the diameter of the straight pipe section 31.

[0046] When the reaction gas drives the particles into the spiral pipe section, it is not suitable to have a large dispersion, but the dispersion of the sticky powder must be achieved, which requires that the high-speed reaction gas can be well controlled. It is not suitable to have a large dispersion, mainly to prevent the sticky powder particles from touching the feeding pipe and the inner wall of the spiral pipe section in large quantities, which will affect the subsequent movement of the particles after rebounding, and then cause disorder in the bending part of the spiral pipe section, affecting the reaction efficiency and the reaction quality of the particles. Although the setting of the feeding pipe in this scheme only adjusts the cross-section of the feeding pipe, and multiple guide protrusions are set in the guide protrusion. However, it can realize that the reaction gas forms a certain spiral along the axis of the pipeline, and this spiral is mainly carried out along the pipe wall, and it also realizes that the airflow at the pipe wall forms a similar existence to an air cushion, thereby effectively reducing the dispersion of particles to the pipe wall, and due to the high-speed flow of the reaction gas, the particles can maintain a high dispersion along the axis of the pipeline. Thereby achieving effective dispersion and effective flow of the sticky powder after entering the spiral pipe section, thereby realizing the possibility of efficient and continuous reaction.

[0047] Specific as Figure 6 As shown, the cross section of the enlarged connection part 32 gradually increases from the straight pipe section 31 to the expansion part 33; the cross section of the reduced connection part 34 gradually decreases from the expansion part 33 to the spiral pipe section 1. The diameter of the minimum cross section of the reduced connection part 34 is 0.6-0.9 times the diameter of the cross section of the straight pipe section 31. And the length of the reduced connection part is 2-3 times the length of the expansion part 33. After such arrangement, although the viscous powder entering the spiral pipe section 1 has a certain tendency to expand toward the pipe wall, the high-speed reaction gas is in a spiral shape and an air cushion along the pipe wall, which can effectively enhance the movement of the viscous powder particles, thereby enhancing the effect of the continuous reaction.

[0048] Moreover, in this solution, the feeding mechanism 4 is also critical, which requires precise feeding and pre-dispersion, so that the viscous powder can be further dispersed after entering the feeding pipe 3, thereby satisfying the effective dispersion and efficient, continuous and sufficient reaction of the viscous powder in the spiral pipe section 1.

[0049] Moreover, the best way for the high-speed reaction gas is to pass it into the spiral pipe section 1 in a horizontal manner. This horizontal way can form a good air cushion on the pipe wall, and then use the spiral rising method to make the high-speed reaction gas and the particles of the sticky powder gradually rise along the spiral pipe section and continue to react. In this way, when in the lower part of the spiral pipe section, the high-speed airflow will produce a centrifugal effect, so that the particles form a state similar to suspension, and are stably transported in the flow field formed by the reaction gas. In this way, the contact between particles is effectively reduced, collisions and extrusions are reduced, and the probability of crushing is reduced; it can also effectively reduce the wear of particles on the pipe wall and enhance the contact reaction between particles and the flow field. In addition, due to the cooperation of the airflow and the spiral pipe section, the particles form a special bed structure, and the particles are arranged and distributed in an orderly manner in the pipeline, rather than piled up and gathered in a disorderly manner. In the spiral pipeline, the airflow not only drives the particles to move forward, but also forms a certain buffer layer between the particles. This buffer layer can reduce the direct collision and friction between the particles, and further reduce energy loss and wear.

[0050] Moreover, since the high-speed reaction gas introduced in the expansion section forms a spiral, the spiral will cause the particles to rotate, so that the particles have better suspension performance, better reduce the contact between particles, better contact and reaction with the high-speed gas flow, and help reduce the turbulence and eddy current of the fluid in the pipeline. In addition, the spiral pipe section also helps the particles to rotate.

[0051] Generally speaking, spiral pipe sections and feed pipes are made of wear-resistant and corrosion-resistant materials to reduce pipe wear and friction between particles, thereby extending the service life of the equipment.

[0052] The above-mentioned gas supply mechanism 5, temperature control device 2, gas-solid separator 6, vibrating feeder 43, and precision feeding component 41 are all conventional technical means in the art. For example, the gas supply mechanism 5 can use a pressurized method to achieve high-speed supply of reaction gas; for example, the temperature control device 2 can use conventional heating equipment such as a high-temperature resistance furnace, a high-temperature heating furnace, an integral heating hood, or a segmented winding heating belt. The specific situation is to select a suitable heating means according to the use requirements; for example, the gas-solid separator can use conventional equipment such as a cyclone separator; for example, the precision feeding component 41 can use conventional equipment such as a screw feeder.

[0053] Based on the above device, this embodiment also proposes an efficient gas-solid continuous flow reaction method, comprising the following steps:

[0054] In the first step, the gas supply mechanism 5 supplies a quantitative / constant speed high-speed reaction gas. The dried reaction gas is continuously supplied from one side of the feed pipe 3 after passing through the pressure reducing valve 7 and the flow meter 8. The introduction speed of the reaction gas is 5-20 m / s.

[0055] The second step is to preheat the spiral pipe section 1 by using the temperature control device 2 to reach a preset temperature. The preset temperature is 25-600°C;

[0056] The third step is to input powder materials. The dried powder materials are fed into the storage bin 42 through the vibrating feeder 43. The powder materials continuously fall into the feeding pipe 3 through the precise feeding assembly 41 at the bottom of the storage bin 42. Under the action of the high-speed airflow, the powder materials falling into the feeding pipe 3 are entrained and dispersed by the reaction gas to form a gas-solid two-phase flow composed of the material and the reaction gas, thereby realizing the input of the powder materials into the spiral pipe section 1 in a dilute phase conveying manner. Due to the efficient gas-solid contact, the powder materials and the reaction gas at the preset temperature undergo the desired chemical reaction.

[0057] In the fourth step, the powder material after the spiral pipe section 1 is fully reacted is output from the outlet 12, and the gas-solid reaction mixture is first cooled by the heat exchanger and then simultaneously introduced into the cyclone separator for gas-solid separation.

[0058] In the first step, the purpose of introducing the reaction gas is to exhaust the remaining gas in all the pipes and achieve the filling of the reaction gas, and then no more gas is introduced, or a low-speed gas flow is maintained. The purpose of maintaining the introduction of a low-speed gas flow, such as 0.1-0.5m / s, is to keep the reaction gas in all the pipes full.

[0059] Powdered solid-phase reactants can be continuously collected at the bottom of the cyclone separator, and after the gaseous mixture flows out from the top of the cyclone separator, it will be separated through further gas separation processes (such as distillation, condensation or introduction of absorption liquid) to obtain high-purity gaseous reaction products. The separated unreacted reactant gas will be reintroduced into the gas supply mechanism to achieve efficient recycling of the gaseous reactants.

[0060] The powder material is dispersed by high-speed reaction gas entraining it, which solves the problem of easy agglomeration and poor dispersion of powder in the past. It has better gas-solid contact and realizes full reaction between reaction gas and powder material.

[0061] The powder material is entrained by the high-speed reaction gas from the inlet end of the spiral tube section, enters the spiral high-temperature tube section for reaction, and finally outputs from the outlet end, and then enters the gas-solid separator for separation, thereby obtaining a completely reacted product. The entire reaction process is continuous and efficient, solving the problem of previous inability to operate continuously.

[0062] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An efficient gas-solid continuous flow reaction method, characterized in that: The following steps are involved: The first step is to set a spiral pipe section, the spiral pipe section includes an inlet end located at the bottom and an outlet end located at the top, a temperature control device for controlling the stability of the spiral pipe section is arranged outside the spiral pipe section, the inlet end is connected to a feeding pipeline, a feeding mechanism is arranged at the middle of the feeding pipeline, the feeding mechanism is used to realize the quantitative input of powdered materials, the feeding pipeline is connected to a gas supply mechanism on the side away from the inlet end of the spiral pipe section, the gas supply mechanism is used to supply quantitative / constant speed high-speed reaction gas, a gas-solid separator is arranged on the outlet end, the feeding pipeline is arranged to be a straight pipe section, an enlarged connection part, an expansion part and a reduced connection part from the gas supply mechanism to the spiral pipe section, the feeding mechanism is arranged at a position on the reduced connection part close to the expansion part, and the diameter of the expansion part is 1.2 to 1.6 times the diameter of the straight pipe section; The second step is to preheat the spiral pipe section to reach a preset temperature; The third step is to input powder materials and introduce high-speed reaction gas, and use the reaction gas to input the powder materials into the spiral pipe section in a dilute phase transport mode, so that the powder materials and the reaction gas rise in a spiral along the spiral pipe section and undergo a chemical reaction; In the fourth step, the powder material passing through the spiral pipe section is output from the outlet end into the gas-solid separator for separation.

2. An efficient gas-solid continuous flow reaction method according to claim 1, characterized in that: In the second step, the preset temperature is 25-600°C.

3. An efficient gas-solid continuous flow reaction method according to claim 1, characterized in that: The reaction gas is introduced at a speed of 5-20 m / s.

4. The efficient gas-solid continuous flow reaction method according to claim 1, characterized in that: In the fourth step, the unused reaction gas after separation is introduced into the gas supply mechanism for recycling.

5. The efficient gas-solid continuous flow reaction method according to claim 1, characterized in that: The spiral pipe section includes a lower pipe section close to the inlet end, an upper pipe section close to the outlet end, and an intermediate pipe section connecting the lower pipe section and the upper pipe section. The temperature of the lower pipe section is 80%-90% of the preset temperature, the temperature of the intermediate pipe section is the preset temperature, the temperature of the upper pipe section is 85%-95% of the preset temperature, the length of the lower pipe section is 10%-20% of the total length of the spiral pipe section, and the length of the upper pipe section is 10%-20% of the total length of the spiral pipe section.

6. The efficient gas-solid continuous flow reaction method according to claim 1, characterized in that: The axial pitch of the spiral pipe segment is 50mm-100mm, the pipe radius of the spiral pipe segment is 10mm-50mm, and the spiral radius of the spiral pipe segment is 250mm-2000mm.

7. The efficient gas-solid continuous flow reaction method according to claim 1, characterized in that: The feeding mechanism includes a precise feeding component arranged on the feeding pipeline, a storage bin arranged on the precise feeding component and a vibrating feeder arranged on the storage bin. A pressure reducing valve is arranged on the side of the feeding pipeline away from the spiral pipe section, and a flow meter is arranged between the pressure reducing valve and the feeding mechanism.

8. An efficient gas-solid continuous flow reaction method according to claim 1, characterized in that: A plurality of guide protrusions are arranged on the inner wall of the extension part, so as to make the passing airflow form a spiral shape.

9. An efficient gas-solid continuous flow reaction device, characterized in that: It comprises a device for carrying out an efficient gas-solid continuous flow reaction method as claimed in any one of claims 1 to 8.

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