Gas-solid reactor

Abstract

The utility model provides a gas-solid reactor. The gas-solid reactor comprises a shell, the shell comprises a feeding port, a discharging port, gas inlet channels and a gas outlet channel, the gas inlet channels comprise the first gas inlet channel, the feeding port is formed in one end of the shell, the discharging port is formed in the other end of the shell, the first gas inlet channel is formed in the lower portion of the shell, and one end of the first gas inlet channel is connected with the shell; and the gas outlet channel is arranged at the upper part of the shell and is communicated with the inner cavity of the shell and the outside. According to the gas-solid reactor, the gas inlet channel and the gas outlet channel are formed in the reactor, a large amount of high-temperature pyrolysis tail gas containing ammonia and hydrogen chloride generated in the melting pyrolyzer is recycled, the pyrolysis tail gas is introduced into the gas-solid reactor to enable the interior of the reactor to be kept at a high temperature, the heating energy consumption of the gas-solid reactor is reduced, and the heating efficiency is improved. Meanwhile, the pyrolysis tail gas contains a large amount of ammonia and hydrogen chloride, so that the consumption of hydrogen chloride gas and ammonia gas in the production process is reduced, and the effect of reducing the production cost is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-solid reactors, in particular to a gas-solid reactor. Background Art

[0002] Gas-solid reactors mainly involve the mass transfer and heat transfer process between gas and solid materials. They can be adapted to different chemical production needs and are therefore widely used in the field of chemical production. In particular, in the production process of anhydrous magnesium chloride using low-water ammonia carnallite, gas-solid reactors are one of the indispensable devices.

[0003] In the current preparation method of anhydrous magnesium chloride using low-hydrated ammonia carnallites, it is necessary to heat and dehydrate the low-hydrated ammonia carnallites through a gas-solid reactor, and at the same time, the low-hydrated ammonia carnallites are fully contacted and reacted with hydrogen chloride or ammonia gas, so that the subsequent melt deammoniation and dehydration process is easier to carry out. In this process, on the one hand, continuous heating is required to maintain a high temperature in the gas-solid reactor, which consumes a lot of heating energy. On the other hand, a large amount of hydrogen chloride gas or ammonia gas needs to be filled into the gas-solid reactor, resulting in a large amount of ammonia or hydrogen chloride used in the production process. In the subsequent process of melt calcining the product processed by the gas-solid reactor using a melt pyrolyzer to obtain anhydrous magnesium chloride, a large amount of high-temperature pyrolysis tail gas containing ammonia and hydrogen chloride is generated.

[0004] The existing gas-solid reactor uses a large amount of ammonia and chlorine in the process of preparing anhydrous magnesium chloride, and has high heating energy consumption, which leads to the problem of high production costs. Utility Model Content

[0005] The main purpose of the utility model is to provide a gas-solid reactor that can recycle high-temperature pyrolysis tail gas containing ammonia and chlorine, reduce the amount of ammonia and hydrogen chloride used, reduce energy consumption, avoid waste of resources, and reduce production costs.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a gas-solid reactor is provided, comprising an outer shell, the outer shell comprising a feed port, a discharge port, an air inlet channel and an air outlet channel, the air inlet channel comprising a first air inlet channel, the feed port being arranged at one end of the outer shell, the discharge port being arranged at the other end of the outer shell, the first air inlet channel being arranged at the lower part of the outer shell, one end of the first air inlet channel being connected to the outer shell, and the other end being connected to the pyrolysis tail gas source, the air outlet channel being arranged at the upper part of the outer shell, connecting the inner cavity of the outer shell with the outside.

[0007] Furthermore, the gas-solid reactor also includes a gas transmission channel and an exhaust channel, the gas outlet channel includes a first gas outlet channel, the gas transmission channel is arranged in the outer shell, the side wall of the gas transmission channel includes a first filter screen, and a second gas inlet channel is arranged at the bottom of the gas transmission channel, and the second gas inlet channel is connected to the first gas inlet channel. A partition wall is also provided on the inner side of the outer shell, and the partition wall and the side wall of the outer shell are spaced apart to form an exhaust channel. The partition wall includes a second filter screen located on the side of the exhaust channel close to the gas transmission channel. The first gas outlet channel connects the exhaust channel with the outside, and the first filter screen and the second filter screen are spaced apart to form a material flow area.

[0008] Furthermore, the gas-solid reactor also includes an air introduction system, the air introduction system includes an air introduction chamber, the air outlet channel also includes a second air outlet channel, the air introduction chamber is arranged above the gas transmission channel and is isolated from the gas transmission channel, the side wall of the air introduction chamber includes a third filter screen, the second air outlet channel is arranged on the air introduction chamber, the second air outlet channel connects the air introduction chamber with the outside, and the gas transmission channel is connected to the air introduction chamber through the material flow area.

[0009] Furthermore, the air induction system also includes a back-blowing air channel, which is arranged on the air induction chamber and connects the air induction chamber with the outside; and / or, the exhaust channel also includes an air collecting area, which is located on the top of the second filter screen and is arranged between the outer shell and the partition wall, and the first air outlet channel is arranged corresponding to the air collecting area and is connected to the air collecting area.

[0010] Furthermore, the gas-solid reactor also includes a gas transmission channel and an air introduction system, the gas outlet channel includes a second gas outlet channel, the gas transmission channel is arranged in the outer shell, the side wall of the gas transmission channel includes a first filter screen, and a second gas inlet channel is provided at the bottom of the gas transmission channel, and the second gas inlet channel is connected to the first gas inlet channel. The gas introduction system includes an air introduction chamber, the air introduction chamber is arranged above the gas transmission channel, the side wall of the air introduction chamber includes a third filter screen, the second gas outlet channel is arranged on the air introduction chamber, and the second gas outlet channel connects the air introduction chamber with the outside.

[0011] Furthermore, the air bleed system also includes a back-blowing air channel, which is arranged on the air bleed chamber and connects the air bleed chamber with the outside.

[0012] Furthermore, the gas-solid reactor includes a material flow area, a temperature detector is provided on the shell, and the temperature detector is connected to the material flow area; and / or a sight glass is provided on the shell.

[0013] Furthermore, the gas-solid reactor includes a material flow area, a material taking pipe is provided on the shell, the material taking pipe passes through the shell and extends into the material flow area, and an opening and closing structure is provided at one end of the material taking pipe.

[0014] Furthermore, the material taking pipe includes a main pipe and a branch pipe that are interconnected. The main pipe extends into the material flow area, and the inner wall of the main pipe near one end of the material flow area is provided with a thread. The opening and closing structure includes a movable rod arranged in the main pipe, and a plug is provided at one end of the movable rod extending into the material flow area, and the other end extends out of the main pipe. The plug cooperates with the main pipe thread, and the branch pipe is provided on the part of the main pipe extending out of the outer shell, and extends obliquely downward from the main pipe; and / or, a guide portion is provided on the lower side of the connection position of the branch pipe in the main pipe, and the top surface of the guide portion is an inclined surface, and the extension direction of the inclined surface is the same as the extension direction of the branch pipe.

[0015] Furthermore, the gas-solid reactor includes a gas transmission channel, and the gas-solid reactor also includes a material guide cone, which is arranged on the top of the gas transmission channel.

[0016] The technical solution of the present invention is applied, the gas-solid reactor includes an outer shell, which forms an internal reaction space of the gas-solid reactor, the outer shell includes a feed port, a discharge port, an air inlet channel and an air outlet channel, the air inlet channel includes a first air inlet channel, the material is fed into the gas-solid reactor from the feed port, and the pyrolysis tail gas enters the gas-solid reactor from the first air inlet channel arranged at the lower part of the outer shell, and the material is blown upward to float and roll in the gas-solid reactor, so that the pyrolysis tail gas and the material are fully in contact and reacted, and the fully reacted material falls to the bottom of the gas-solid reactor and is discharged from the gas-solid reactor from the feed port, and the pyrolysis tail gas is discharged from the gas-solid reactor through the air outlet channel arranged at the upper part of the outer shell. By arranging the air inlet channel and the air outlet channel on the gas-solid reactor, a large amount of high-temperature pyrolysis tail gas containing ammonia and chlorine generated in the subsequent melting pyrolyzer is reused. After the high-temperature pyrolysis tail gas is passed into the gas-solid reactor, a higher temperature in the gas-solid reactor can be maintained, thereby reducing the energy consumption of heating the gas-solid reactor. At the same time, the pyrolysis tail gas contains a large amount of ammonia and chlorine, which reduces the amount of chlorine and ammonia used in the production process, thereby achieving the effect of reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present invention are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 The overall structural diagram of a gas-solid reactor according to an embodiment of the present invention is shown;

[0019] Figure 2 A side view of the overall structure of a gas-solid reactor according to an embodiment of the present invention is shown;

[0020] Figure 3 Shown Figure 2 AA section view;

[0021] Figure 4The overall structural diagram of a gas-solid reactor according to an embodiment of the present invention is shown;

[0022] Figure 5 Shown Figure 4 BB cross-sectional view;

[0023] Figure 6 The overall structural diagram of a gas-solid reactor according to an embodiment of the present invention is shown;

[0024] Figure 7 Shown Figure 6 CC sectional view;

[0025] Figure 8 A side view of the overall structure of a gas-solid reactor according to an embodiment of the present invention is shown;

[0026] Figure 9 The overall structural diagram of a gas-solid reactor according to an embodiment of the present invention is shown;

[0027] Figure 10 A side view of the overall structure of a gas-solid reactor according to an embodiment of the present invention is shown;

[0028] Figure 11 The overall structural diagram of a gas-solid reactor according to an embodiment of the present invention is shown;

[0029] Figure 12 A side view showing the overall structure of a gas-solid reactor according to an embodiment of the present invention; and

[0030] Figure 13 The figure shows the overall structure of the material taking pipe of the gas-solid reactor according to one embodiment of the present invention.

[0031] The above drawings include the following reference numerals:

[0032] 1. Outer shell; 2. Feed port; 3. Discharge port; 4. First air inlet channel; 5. Second air inlet channel; 6. First air outlet channel; 7. Second air outlet channel; 8. Air transmission channel; 9. Exhaust channel; 10. Partition wall; 11. First filter screen; 12. Second filter screen; 13. Third filter screen; 14. Air inlet chamber; 15. Back-blowing air channel; 16. Material flow area; 17. Thermometer; 18. Sight glass; 19. Feed pipe; 191. Main pipe; 192. Branch pipe; 20. Movable rod; 21. Plug; 22. Guide cone; 23. Guide part; 24. Gas collecting area. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] like Figures 1 to 13 As shown, according to an embodiment of the present utility model, the gas-solid reactor includes a shell 1, the shell 1 includes a feed port 2, a discharge port 3, an air inlet channel and an air outlet channel, the air inlet channel includes a first air inlet channel 4, the feed port 2 is arranged at one end of the shell 1, the discharge port 3 is arranged at the other end of the shell 1, the first air inlet channel 4 is arranged at the lower part of the shell 1, one end of the first air inlet channel 4 is connected to the shell 1, and the other end is connected to the pyrolysis tail gas source, and the air outlet channel is arranged at the upper part of the shell 1, connecting the inner cavity of the shell 1 with the outside.

[0035] In the above technical solution, the gas-solid reactor includes a shell 1, which forms an internal reaction space of the gas-solid reactor. The shell 1 includes a feed port 2, a discharge port 3, an air inlet channel and an air outlet channel. The air inlet channel includes a first air inlet channel 4. The material is fed into the gas-solid reactor from the feed port 2, and the pyrolysis exhaust gas enters the gas-solid reactor from the first air inlet channel 4 provided at the lower part of the shell 1. The material is blown upward to float and tumble in the gas-solid reactor, so that the pyrolysis exhaust gas and the material are fully in contact and reacted. The fully reacted material falls to the bottom of the gas-solid reactor and is discharged from the discharge port 3. The pyrolysis tail gas is discharged from the gas-solid reactor through the upper air outlet channel arranged on the outer shell 1. By arranging the air inlet channel and the air outlet channel on the gas-solid reactor, a large amount of high-temperature pyrolysis tail gas containing ammonia and chlorine generated in the subsequent melting pyrolyzer can be reused. After the high-temperature pyrolysis tail gas is passed into the gas-solid reactor, a higher temperature in the gas-solid reactor can be maintained, which reduces the energy consumption for heating the gas-solid reactor. At the same time, the pyrolysis tail gas contains a large amount of ammonia and chlorine, which reduces the amount of chlorine and ammonia used in the production process, thereby achieving the effect of reducing production costs.

[0036] In one embodiment, the gas-solid reactor is a fluidized bed or a moving bed.

[0037] In one embodiment, the gas-solid reactor also includes a gas supply channel 8 and an exhaust channel 9, the gas outlet channel includes a first gas outlet channel 6, the gas supply channel 8 is arranged in the outer shell 1, the side wall of the gas supply channel 8 includes a first filter screen 11, and a second gas inlet channel 5 is arranged at the bottom of the gas supply channel 8, and the second gas inlet channel 5 is connected to the first gas inlet channel 4. A partition wall 10 is also provided on the inner side of the outer shell 1, and the partition wall 10 and the side wall of the outer shell 1 are spaced apart to form the exhaust channel 9. The partition wall 10 includes a second filter screen 12 located on the side of the exhaust channel 9 close to the gas supply channel 8. The first gas outlet channel 6 connects the exhaust channel 9 with the outside, and the first filter screen 11 and the second filter screen 12 are spaced apart to form a material flow area 16.

[0038] In one embodiment, a bracket is provided on the inner wall of the gas-solid reactor, and the bracket includes a support member and a clamp. The clamp is locked around the gas transmission channel 8. One end of the support member is connected to the clamp, and the other end abuts against the inner wall of the gas-solid reactor, thereby supporting and fixing the gas transmission channel 8 in the outer shell 1 through the bracket.

[0039] In the above technical solution, the gas-solid reactor also includes a gas delivery channel 8 and an exhaust channel 9. The gas delivery channel 8 can make the pyrolysis tail gas gather in the gas delivery channel 8 and then be uniformly ejected in all directions from the side walls of the gas delivery channel 8, thereby avoiding the problem that the pyrolysis tail gas ejected from a single gas outlet is blocked by the material, resulting in the pyrolysis tail gas and the material being unable to fully contact and react, thereby increasing the contact area between the pyrolysis tail gas and the material so that the pyrolysis tail gas and the material are more fully in contact, and at the same time, the heat distribution of the pyrolysis tail gas in the gas-solid reactor is more uniform; the side walls of the gas delivery channel 8 The first filter screen 11 is provided to isolate the gas transmission channel 8 from the material flow area 16, thereby preventing the material flowing in the material flow area 16 from entering the gas transmission channel 8 to hinder the flow of the pyrolysis exhaust gas, and at the same time preventing the material from entering the gas transmission channel 8 and causing the air inlet channel to be blocked; a second air inlet channel 5 is provided at the bottom of the gas transmission channel 8, and the second air inlet channel 5 is connected to the first air inlet channel 4, and the pyrolysis exhaust gas enters the gas transmission channel 8 through the first air inlet channel 4 and the second air inlet channel 5; between the partition wall 10 on the inner side of the shell 1 and the side wall of the shell 1 The exhaust channel 9 is formed by the interval arrangement, and the second filter screen 12 can be reliably fixed on the exhaust channel 9 near the gas transmission channel 8; the exhaust channel 9 can make the pyrolysis exhaust gas gather in the exhaust channel 9 and then be discharged from the gas-solid pyrolyzer through the first outlet channel 6; the exhaust channel 9 and the material flow area 16 are isolated from each other by setting the second filter screen 12, and the contact reaction between the material and the pyrolysis exhaust gas is concentrated in the material flow area 16 between the first filter screen 11 and the second filter screen 12 through the cooperation of the first filter screen 11 and the second filter screen 12. The first filter screen 11 and the second filter screen 12 form a material flow area 16, which is mainly used for material circulation, so that the material and dust particles flowing in the material flow area 16 can be prevented from entering the exhaust channel 9 with the pyrolysis exhaust gas and causing the first outlet channel 6 to be blocked; the first outlet channel 6 connects the exhaust channel 9 with the outside, so that the pyrolysis exhaust gas can be discharged from the gas-solid pyrolyzer through the exhaust channel 9; the material flow area 16 formed between the first filter screen 11 and the second filter screen 12 is mainly used for material circulation, so that the material can fully contact and react with the pyrolysis exhaust gas in this area.

[0040] In one embodiment, the gas-solid reactor also includes an air introduction system, the air introduction system includes an air introduction chamber 14, the air outlet channel also includes a second air outlet channel 7, the air introduction chamber 14 is arranged above the gas transmission channel 8 and is isolated from the gas transmission channel 8, the side wall of the air introduction chamber 14 includes a third filter screen 13, the second air outlet channel 7 is arranged on the air introduction chamber 14, the second air outlet channel 7 connects the air introduction chamber 14 with the outside, and the gas transmission channel 8 is connected to the air introduction chamber 14 through the material flow area 16.

[0041] In the above technical solution, the air inlet chamber 14 is arranged above the air supply channel 8 and is isolated from the air supply channel 8. After the pyrolysis exhaust gas enters the air supply channel 8 through the air inlet channel, it gathers in the air supply channel 8, so that the air pressure in the air supply channel 8 is greater than the air pressure in the material flow area 16. Under the action of air pressure, the pyrolysis exhaust gas enters the material flow area 16 from the air supply channel 8 through the first filter 11. Then, since the air inlet chamber 14 is connected to the outside through the second air outlet channel 7, the atmospheric pressure in the air inlet chamber 14 is maintained at the same level as that in the outside. Therefore, the air pressure in the material flow area 16 is greater than the air pressure in the air inlet chamber 14. After the pyrolysis exhaust gas flows into the material flow area 16 and fully contacts and reacts with the material, the pyrolysis exhaust gas enters the air inlet chamber 14 through the filtration of the third filter 13 under the action of air pressure, and is then discharged from the gas-solid reactor through the second air outlet channel 7 connected to the outside.

[0042] In one embodiment, the air bleed system also includes a back-blowing air channel 15, which is arranged on the air bleed chamber 14, and the back-blowing air channel 15 connects the air bleed chamber 14 with the outside; and / or, the exhaust channel 9 also includes an air collecting area 24, which is located at the top of the second filter screen 12 and is arranged between the outer shell 1 and the partition wall 10, and the first air outlet channel 6 is arranged corresponding to the air collecting area 24 and is connected to the air collecting area 24.

[0043] In the above technical solution, the gas-solid reactor is provided with a first gas outlet channel 6 and a second gas outlet channel 7 for discharging pyrolysis exhaust gas. Compared with the single-path exhaust technical solution which is only provided with the first gas outlet channel 6 or the second gas outlet channel 7, the above-mentioned dual-path exhaust technical solution can further improve the discharge efficiency of the pyrolysis exhaust gas, thereby improving the pyrolysis exhaust gas ventilation capacity of the gas-solid reactor, that is, the old pyrolysis exhaust gas which has consumed a large amount of chlorine and ammonia and a large amount of heat is discharged from the gas-solid reactor as soon as possible, and at the same time, new high-temperature pyrolysis exhaust gas containing a large amount of chlorine and ammonia is quickly replenished, so as to better maintain the high-temperature environment in the gas-solid reactor, and at the same time, it can also ensure that the pyrolysis exhaust gas contains sufficient chlorine and ammonia, further improving the material processing effect; the pyrolysis exhaust gas loses a lot of heat in the process of flow and reaction, so when it reaches the air inlet chamber 14, due to The temperature drop will cause sublimation, and crystals will form on the third filter 13, causing blockage. Therefore, a back-blowing air channel 15 is set on the air inlet chamber 14, so that the back-blowing gas outside the gas-solid reactor is blown into the air inlet chamber 14 through the back-blowing air channel 15. The crystals formed on the third filter 13 are sublimated into gas again through the blowing action of the back-blowing gas and high-temperature heating. Together with the back-blowing gas and the pyrolysis exhaust gas, the crystals are discharged from the gas-solid reactor through the second air outlet channel 7, avoiding the problem of pyrolysis exhaust gas sublimation crystals blocking the third filter 13; the gas collection area 24 is located at the top of the second filter 12 and is arranged between the outer shell 1 and the partition wall 10, and the first air outlet channel 6 is arranged corresponding to the gas collection area 24 and is connected to the gas collection area 24, so that the pyrolysis exhaust gas entering the exhaust channel 9 is further gathered at the first air outlet channel 6, thereby improving the exhaust efficiency of the pyrolysis exhaust gas.

[0044] In one embodiment, the gas-solid reactor also includes a gas transmission channel 8 and an air introduction system, the gas outlet channel includes a second gas outlet channel 7, the gas transmission channel 8 is arranged in the outer shell 1, the side wall of the gas transmission channel 8 includes a first filter screen 11, and a second gas inlet channel 5 is provided at the bottom of the gas transmission channel 8. The second gas inlet channel 5 is connected to the first gas inlet channel 4, and the air introduction system includes an air introduction chamber 14, the air introduction chamber 14 is arranged above the gas transmission channel 8, the side wall of the air introduction chamber 14 includes a third filter screen 13, the second gas outlet channel 7 is arranged on the air introduction chamber 14, and the second gas outlet channel 7 connects the air introduction chamber 14 with the outside.

[0045] In the above technical solution, the gas transmission channel 8 can allow the pyrolysis exhaust gas to gather in the gas transmission channel 8 and then be uniformly ejected in all directions from the side walls of the gas transmission channel 8, thereby increasing the contact area between the pyrolysis exhaust gas and the material so that the pyrolysis exhaust gas and the material are in more sufficient contact, and at the same time, the heat distribution of the pyrolysis exhaust gas in the gas-solid reactor is more uniform; the side wall of the gas transmission channel 8 includes a first filter 11, and the provision of the first filter 11 prevents the material flowing in the material flow area 16 from flowing back into the gas transmission channel 8 and causing blockage of the air inlet channel; A second air inlet channel 5 is provided at the bottom of the air delivery channel 8, and the second air inlet channel 5 is connected to the first air inlet channel 4. The pyrolysis exhaust gas enters the air delivery channel 8 through the first air inlet channel 4 and the second air inlet channel 5; the air inlet chamber 14 is provided above the air delivery channel 8 and is isolated from the air delivery channel 8, so that the pyrolysis exhaust gas enters the material flow area 16 through the air delivery channel 8 and fully contacts and reacts with the material, and then enters the air inlet chamber 14 after being filtered by the third filter screen 13, and then discharged from the gas-solid reactor through the second air outlet channel 7 connected to the outside.

[0046] In one embodiment, the first filter screen 11 or the second filter screen 12 or the third filter screen 13 is a Johnson screen. The Johnson screen has a large opening range, a high opening rate, uniform pores, a long life and a low price, so that the filter screen has a better filtering effect on the material in the gas-solid reactor and reduces production costs.

[0047] In one embodiment, the first filter screen 11 or the second filter screen 12 or the third filter screen 13 is a metal sintered mesh, which has good filtering accuracy and high temperature resistance, so that the filter screen can maintain a good and stable filtering effect even in the high temperature environment of the gas-solid reactor.

[0048] In one embodiment, the bleed air system further includes a back-blowing air channel 15 , which is disposed on the bleed air chamber 14 and connects the bleed air chamber 14 with the outside.

[0049] In the above technical solution, the pyrolysis exhaust gas loses a large amount of heat during the flow and reaction process, so when it reaches the air inlet chamber 14, it will condense due to the decrease in temperature, and form crystals on the third filter 13, causing blockage. Therefore, a back-blowing air channel 15 is provided on the air inlet chamber 14, so that the back-blowing gas outside the gas-solid reactor is blown into the air inlet chamber 14 through the back-blowing air channel 15. The crystals formed on the third filter 13 are sublimated into gas again through the blowing action of the back-blowing gas and high-temperature heating, and are discharged from the gas-solid reactor together with the back-blowing gas and the pyrolysis exhaust gas through the second air outlet channel 7, thereby avoiding the problem of condensation and crystallization of the pyrolysis exhaust gas blocking the third filter 13.

[0050] In one embodiment, the gas-solid reactor includes a material flow area 16 , a temperature detector 17 is provided on the housing 1 , and the temperature detector 17 is connected to the material flow area 16 ; and / or a sight glass 18 is provided on the housing 1 .

[0051] In the above technical solution, the material flow zone 16 is mainly used for material circulation, so that the material can fully contact and react with the pyrolysis exhaust gas in this area; the thermometer 17 is mainly used to measure the temperature of the material flow zone 16 in the gas-solid reactor to ensure that the gas-solid reactor always maintains a suitable temperature range to complete the material reaction. In addition, the thermometer 17 can also be used to measure the moisture content of the material to determine whether the moisture content of the material meets the requirements for entering the next process.

[0052] In one embodiment, the temperature detector 17 uses the Karl Fischer method to measure the moisture content of the material.

[0053] In one embodiment, the gas-solid reactor includes a material flow area 16 , and a material taking pipe 19 is provided on the shell 1 . The material taking pipe 19 passes through the shell 1 and extends into the material flow area 16 . An opening and closing structure is provided at one end of the material taking pipe 19 .

[0054] In the above technical solution, the material undergoing drying and reaction in the material flow area 16 can be sampled through the material taking pipe 19. An opening and closing structure is provided at one end of the material taking pipe 19. By controlling the opening and closing of the opening and closing structure, the material can be prevented from leaking out of the gas-solid reactor through the material taking pipe 19 along with the pyrolysis exhaust gas during non-sampling time.

[0055] In one embodiment, the material taking pipe 19 includes a main pipe 191 and a branch pipe 192 that are interconnected. The main pipe 191 extends into the material flow area 16. The inner wall of the main pipe 191 near one end of the material flow area 16 is provided with a thread. The opening and closing structure includes a movable rod 20 arranged in the main pipe 191. The movable rod 20 extends into the material flow area 16 and a plug 21 is provided at one end. The surface of the plug 21 is provided with a thread, and the other end extends out of the main pipe 191. The plug 21 is threadedly matched with the main pipe 191. The branch pipe 192 is arranged on the part of the main pipe 191 extending out of the outer shell 1, and extends obliquely downward from the main pipe 191; and / or, a guide portion 23 is provided on the lower side of the connection position of the branch pipe 192 in the main pipe 191, and the top surface of the guide portion 23 is an inclined surface, and the extension direction of the inclined surface is the same as the extension direction of the branch pipe.

[0056] In the above technical solution, the movable rod 20 is rotated to screw the plug 21 out of the main pipe 191, thereby opening the opening and closing structure, allowing the material to enter the main pipe 191 from the opening at one end of the main pipe 191 close to the material flow area 16, and then be discharged through the branch pipe 192 to obtain a material sample, and then the movable rod 20 is pulled down to make the plug 21 contact the internal thread of the end of the main pipe 191 close to the material flow area 16, and the movable rod 20 is rotated to screw the plug 21 into the main pipe 191 so that the plug 21 is threadedly connected to the main pipe 191, thereby closing the opening and closing structure and completing the material taking process; a guide portion 23 is provided on the lower side of the connection position of the branch pipe 192 in the main pipe 191, and the guide portion 23 guides the material entering the main pipe 191 during the material taking process to turn to the branch pipe 192, and is discharged from the material taking pipe 19 from the branch pipe 192, to avoid the material accumulating at the bottom of the main pipe 191 and jamming the movable rod 20.

[0057] In one embodiment, the movable rod 20 is pushed to push the plug 21 out of the main pipe 191, thereby opening the opening and closing structure and obtaining a material sample. The movable rod 20 is pulled to retract the plug 21 into the main pipe 191, sealing the opening of the main pipe 191 near one end of the material flow area 16, thereby closing the opening and closing structure and completing the material collection process.

[0058] In one embodiment, a handle is provided at one end of the movable rod 20 away from the plug, and the handle can be used to more conveniently operate the movable rod to achieve rotation or push-pull movements.

[0059] In one embodiment, the gas-solid reactor includes a gas transmission channel 8, and the gas-solid reactor also includes a material guide cone 22. The material guide cone 22 is arranged at the top of the gas transmission channel 8 to guide the material entering the gas-solid reactor from the feed port 2 to prevent the accumulation of material and the blockage of the material flow area 16.

[0060] The working process of the gas-solid reactor of the present invention is as follows: the pyrolysis tail gas generated in the melt pyrolysis process enters the gas delivery channel 8 through the first air inlet channel 4 and the second air inlet channel 5. The pyrolysis tail gas gathers in the gas delivery channel 8 and is evenly blown into the material flow area 16 through the first filter screen 11 on the side wall of the gas delivery channel 8. The material enters the gas-solid reactor from the feed port 2. The material is diverted by being arranged at the top of the gas delivery channel 8 so that the material can flow to the material flow area 16 without material accumulation and blockage. The material contacts the pyrolysis tail gas in the material flow area 16, and the two fully react to adjust the material moisture content and other indicators. The standard meets the standards of subsequent processes, and then the material falls to the bottom of the gas-solid reactor through the material flow area 16 under the action of gravity, and is discharged from the gas-solid reactor through the discharge port 3 to the next process equipment, and the pyrolysis exhaust gas follows the air flow from the material flow area 16 through the partition wall 10 and the second filter screen 12 to ensure that the pyrolysis exhaust gas without mixed materials enters the exhaust channel 9. After the pyrolysis exhaust gas gathers in the exhaust channel 9, it is discharged from the gas-solid reactor through the first outlet channel 6, thereby realizing the reuse of a large amount of high-temperature pyrolysis exhaust gas containing ammonia and chlorine generated in the melt pyrolyzer to dry the material and perform chlorination reaction treatment.

[0061] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: the gas-solid reactor includes a shell 1, which forms an internal reaction space of the gas-solid reactor. The shell 1 includes a feed port 2, a discharge port 3, an air inlet channel and an air outlet channel. The air inlet channel includes a first air inlet channel 4. The material is fed into the gas-solid reactor from the feed port 2, and the pyrolysis exhaust gas enters the gas-solid reactor from the first air inlet channel 4 provided at the lower part of the shell 1. The material is blown upward to float and tumble in the gas-solid reactor, so that the pyrolysis exhaust gas and the material are fully in contact and reacted. The fully reacted material falls into the gas-solid reactor. The bottom of the reactor is discharged from the gas-solid reactor through the discharge port 3, and the pyrolysis tail gas is discharged from the gas-solid reactor through the outlet channel arranged on the upper part of the shell 1. By arranging the air inlet channel and the air outlet channel on the gas-solid reactor, a large amount of high-temperature pyrolysis tail gas containing ammonia and chlorine generated in the subsequent melting pyrolyzer can be reused. After the high-temperature pyrolysis tail gas is passed into the gas-solid reactor, a higher temperature in the gas-solid reactor can be maintained, which reduces the energy consumption for heating the gas-solid reactor. At the same time, the pyrolysis tail gas contains a large amount of ammonia and chlorine, which reduces the amount of chlorine and ammonia used in the production process, thereby achieving the effect of reducing production costs.

[0062] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0063] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A gas-solid reactor, characterized in that: The invention comprises a shell (1), wherein the shell (1) comprises a feed port (2), a discharge port (3), an air inlet channel and an air outlet channel, wherein the air inlet channel comprises a first air inlet channel (4), wherein the feed port (2) is arranged at one end of the shell (1), and the discharge port (3) is arranged at the other end of the shell (1), and the first air inlet channel (4) is arranged at the lower part of the shell (1), wherein one end of the first air inlet channel (4) is connected to the shell (1), and the other end is connected to a pyrolysis tail gas source, and the air outlet channel is arranged at the upper part of the shell (1) to connect the inner cavity of the shell (1) with the outside.

2. The gas-solid reactor according to claim 1, characterized in that: The gas-solid reactor further comprises a gas delivery channel (8) and an exhaust channel (9), wherein the exhaust channel comprises a first exhaust channel (6), the gas delivery channel (8) is arranged in the shell (1), the side wall of the gas delivery channel (8) comprises a first filter screen (11), a second gas inlet channel (5) is arranged at the bottom of the gas delivery channel (8), and the second gas inlet channel (5) is connected to the first gas inlet channel (4), a partition wall (10) is further arranged on the inner side of the shell (1), the partition wall (10) and the side wall of the shell (1) are spaced apart to form the exhaust channel (9), the partition wall (10) comprises a second filter screen (12) located on a side of the exhaust channel (9) close to the gas delivery channel (8), the first exhaust channel (6) communicates with the exhaust channel (9) and the outside, and the first filter screen (11) and the second filter screen (12) are spaced apart to form a material flow area (16).

3. The gas-solid reactor according to claim 2, characterized in that: The gas-solid reactor further includes an air introduction system, the air introduction system includes an air introduction chamber (14), the air outlet channel further includes a second air outlet channel (7), the air introduction chamber (14) is arranged above the air delivery channel (8) and is isolated from the air delivery channel (8), the side wall of the air introduction chamber (14) includes a third filter screen (13), the second air outlet channel (7) is arranged on the air introduction chamber (14), the second air outlet channel (7) connects the air introduction chamber (14) with the outside, and the air delivery channel (8) is connected to the air introduction chamber (14) through the material flow area (16).

4. The gas-solid reactor according to claim 3, characterized in that The air induction system further includes a back-blowing air channel (15), which is arranged on the air induction chamber (14) and connects the air induction chamber (14) with the outside; and / or, the exhaust channel (9) further includes an air collecting area (24), which is located on the top of the second filter (12) and is arranged between the outer shell (1) and the partition wall (10), and the first air outlet channel (6) is arranged corresponding to the air collecting area (24) and is connected to the air collecting area (24).

5. The gas-solid reactor according to claim 1, characterized in that: The gas-solid reactor further comprises a gas delivery channel (8) and an air inlet system, wherein the gas outlet channel comprises a second gas outlet channel (7), the gas delivery channel (8) is arranged in the shell (1), the side wall of the gas delivery channel (8) comprises a first filter screen (11), a second gas inlet channel (5) is arranged at the bottom of the gas delivery channel (8), the second gas inlet channel (5) is connected to the first gas inlet channel (4), the gas inlet system comprises an air inlet chamber (14), the air inlet chamber (14) is arranged above the gas delivery channel (8), the side wall of the air inlet chamber (14) comprises a third filter screen (13), the second gas outlet channel (7) is arranged on the gas inlet chamber (14), and the second gas outlet channel (7) connects the gas inlet chamber (14) with the outside.

6. The gas-solid reactor according to claim 5, characterized in that: The bleed air system further comprises a back-blowing air channel (15), wherein the back-blowing air channel (15) is arranged on the bleed air chamber (14), and the back-blowing air channel (15) connects the bleed air chamber (14) with the outside.

7. The gas-solid reactor according to any one of claims 1 to 6, characterized in that: The gas-solid reactor comprises a material flow area (16), a temperature detector (17) is provided on the housing (1), and the temperature detector (17) is connected to the material flow area (16); and / or a sight glass (18) is provided on the housing (1).

8. The gas-solid reactor according to any one of claims 1 to 6, characterized in that: The gas-solid reactor comprises a material flow area (16), a material taking pipe (19) is provided on the shell (1), the material taking pipe (19) passes through the shell (1) and extends into the material flow area (16), and an opening and closing structure is provided at one end of the material taking pipe (19).

9. The gas-solid reactor according to claim 8, characterized in that: The material taking pipe (19) includes a main pipe (191) and a branch pipe (192) that are interconnected. The main pipe (191) extends into the material flow area (16). The inner wall of the main pipe (191) near one end of the material flow area (16) is provided with a thread. The opening and closing structure includes a movable rod (20) provided in the main pipe (191). One end of the movable rod (20) extending into the material flow area (16) is provided with a plug (21), and the other end extends out of the main pipe (19). 1), the plug (21) is threadably engaged with the main pipe (191), the branch pipe (192) is arranged on the portion of the main pipe (191) extending outside the housing (1), and extends obliquely downward from the main pipe (191); and / or, a guide portion (23) is provided inside the main pipe (191) at the lower side of the connection position of the branch pipe (192), the top surface of the guide portion (23) is an inclined surface, and the extension direction of the inclined surface is the same as the extension direction of the branch pipe (192).

10. The gas-solid reactor according to any one of claims 1 to 6, characterized in that: The gas-solid reactor comprises a gas transmission channel (8), and the gas-solid reactor further comprises a material guide cone (22), wherein the material guide cone (22) is arranged at the top of the gas transmission channel (8).

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