Environment-friendly zeolite regeneration device
By designing environmentally friendly boilestone regeneration devices and using multi -layer empty cavity structure and catalytic decomposition technology to solve the problem of poor honeycomb bloodpace and great energy consumption, it has achieved efficient and environmentally friendly energy saving effects.
Patent Information
- Application Number
- CN202422986590.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-12-05
Smart Images
Figure CN222384841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of organic matter desorption, in particular to an environmentally friendly zeolite regeneration device. Background Art
[0002] Honeycomb zeolite is a natural mineral with a microporous structure. Its working principle is to adsorb and separate molecules through its microporous structure. The microporous structure of honeycomb zeolite is very regular, with a pore size between 4-10 angstroms, which enables it to adsorb molecules with a certain selectivity in size and shape. The adsorption capacity of honeycomb zeolite mainly comes from its microporous structure. When molecules enter the micropores of honeycomb zeolite, they interact with the chemical functional groups on the surface of the micropores and are adsorbed inside the micropores. Since the microporous structure of honeycomb zeolite is very regular, it is able to selectively adsorb molecules, which makes it widely used in separating and purifying molecules. For example, in the petrochemical industry, honeycomb zeolite can be used to separate alkanes and aromatic hydrocarbons. The microporous structure of honeycomb zeolite can selectively adsorb alkane molecules without adsorbing aromatic hydrocarbon molecules, which allows alkanes and aromatic hydrocarbons to be effectively separated and purified. Another application of zeolite is in air purification. Honeycomb zeolite can be used to adsorb harmful gases in the air, such as sulfur dioxide, nitrogen oxides and volatile organic compounds. The microporous structure of honeycomb zeolite can selectively adsorb these harmful gases, thereby purifying the air.
[0003] When the honeycomb zeolite is saturated with adsorption, hot air (180-220℃) is usually used to desorb the honeycomb zeolite. However, for the high-boiling point substances adsorbed by the honeycomb zeolite, if the temperature of the hot air is not high enough, it cannot be desorbed, which will affect the adsorption performance of the zeolite in the long run. During desorption, the hot air passes through the zeolite particle bed from bottom to top. If a large number of zeolite particles are accumulated and the bed is too thick, it is not only not conducive to the smooth passage of hot air, but also easy to cause uneven desorption effect. In addition, the loading and replacement of the bed zeolite particles are time-consuming and laborious. In addition, the organic gas obtained by desorption should be handled in time to avoid environmental pollution. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an environmentally friendly zeolite regeneration device with good desorption effect, energy saving, environmental protection and manpower saving.
[0005] The environmentally friendly zeolite regeneration device described in the utility model includes a regeneration bin, a catalytic decomposition bin, a heat exchanger and an electric heater. The top of the regeneration bin is provided with a feed port and an organic waste gas outlet, the bottom of the regeneration bin is provided with a discharge port and a high-temperature gas inlet, the high-temperature gas inlet is connected to the refrigerant outlet of the heat exchanger through the electric heater, the refrigerant inlet of the heat exchanger is connected to the gas supply pipe, the heat medium inlet of the heat exchanger is connected to the gas outlet at the top of the catalytic decomposition bin, the gas inlet at the bottom of the catalytic decomposition bin is connected to the organic waste gas outlet of the regeneration bin, and a catalyst layer is provided in the catalytic decomposition bin;
[0006] The regeneration bin comprises a first cylinder, a second cylinder and a third cylinder. The first cylinder, the second cylinder and the third cylinder are hollow and coaxial cylindrical structures. The inner cavity of the first cylinder forms a first cavity, a second cavity is formed between the first cylinder and the second cylinder, and a third cavity is formed between the second cylinder and the third cylinder. A plurality of first through holes are distributed on the side wall of the first cylinder. The first cavity and the second cavity are connected only through the first through holes. A feeding screw is provided on the side wall of the first cylinder. The feeding screw is provided in the second cavity. The outer edge of the feeding screw slides against the side wall of the second cylinder. A rotating shaft is fixed at the central axis of the first cylinder. The rotating shaft is fixedly connected to the output end of the motor. A plurality of first partition plates are provided from top to bottom in the first cavity. The first partition plates divide the first cavity into a plurality of first sub-cavities arranged vertically.
[0007] A plurality of second through holes are distributed on the side wall of the second cylinder, and the second cavity and the third cavity are connected only through the second through holes. A plurality of second partition plates are arranged from top to bottom in the third cavity, and the second partition plates are staggered with the first partition plates, and the second partition plates divide the third cavity into a plurality of second sub-cavities arranged vertically; the upper end of the second cavity is connected to the feed port, and the lower end of the second cavity is connected to the discharge port, the second sub-cavity located at the lower end is connected to the high-temperature gas inlet, and the second sub-cavity located at the upper end is connected to the organic waste gas outlet.
[0008] Preferably, the discharge port is connected to the discharge bin.
[0009] Preferably, a gas separation plate is provided between the gas inlet at the bottom of the catalytic decomposition chamber and the catalyst layer.
[0010] Preferably, a transverse S-shaped heat exchange tube is provided inside the heat exchanger, and two ends of the transverse S-shaped heat exchange tube are respectively the heat medium inlet and the heat medium outlet of the heat exchanger.
[0011] Preferably, a water outlet pipe is provided at the bottom of the transverse S-shaped heat exchange tube, and a water outlet valve is provided on the water outlet pipe.
[0012] Preferably, an electric heating tube is provided inside the electric heater.
[0013] Preferably, the first cylinder includes an upper top surface and a lower bottom surface, and the rotating shaft passes through the upper top surface and the lower bottom surface and is fixedly connected to both the upper top surface and the lower bottom surface.
[0014] Preferably, it also includes a support seat, and the rotating shaft passes through the first cylinder and is rotatably connected to the support seat.
[0015] The working process of the utility model is as follows: the zeolite particles to be desorbed enter the second cavity of the regeneration bin through the feed port, the motor is started, the shaft drives the first cylinder to rotate, and the zeolite particles are slowly transported downward in the second cavity under the action of the feeding screw. During this period, the high-temperature air inlet transports high-temperature air to the third cavity, first entering the second sub-cavity at the bottom, and then under the action of the second partition plate, the high-temperature air passes through the second through hole, the second cavity and the first through hole in turn into the first sub-cavity, and then under the action of the first partition plate, the high-temperature air passes through the first through hole, the second cavity and the second through hole in turn into the second sub-cavity of the upper layer, and so on. Push, each time the hot air passes through the second cavity, it will heat the zeolite therein, so that the zeolite is regenerated. The zeolite is pushed downward by the feeding screw. During the pushing process, hot air is continuously introduced to heat the zeolite to achieve regeneration. Then the hot air carrying the desorbed organic waste gas enters the second sub-chamber at the top and is discharged from the organic waste gas outlet and enters the catalytic decomposition bin. Under the action of the catalyst layer, it is decomposed into carbon dioxide and water and releases heat. The decomposed gas enters the heat exchanger as a heat medium, preheats the airflow transported by the air supply pipe and is discharged. The preheated air enters the electric heater for further heating and is sent to the regeneration bin as high-temperature gas for zeolite regeneration.
[0016] Valves can be installed on the pipeline according to control needs, and the flow of materials in the corresponding pipeline can be conveniently controlled and adjusted by opening and closing the valves.
[0017] Compared with the prior art, the beneficial effects of the utility model are:
[0018] 1. The organic waste gas desorbed by zeolite is treated in time, and the heat generated by the decomposition of the organic waste gas is recovered for preheating of hot air, which is more environmentally friendly and energy-saving;
[0019] 2. There are multiple layers of cavities in the regeneration bin. The first partition plate and the second partition plate allow the hot air to pass through the zeolite particles multiple times, resulting in a better desorption effect. The feeding screw avoids material blockage and automatically discharges the material, saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the structure of the environmentally friendly zeolite regeneration device of the utility model;
[0021] Figure 2 This is a schematic diagram of the internal structure of the regeneration bin of the utility model;
[0022] In the figure: 1. regeneration chamber; 2. catalytic decomposition chamber; 3. heat exchanger; 4. electric heater; 5. feed port; 6. organic waste gas outlet; 7. discharge port; 8. high-temperature gas inlet; 9. catalyst layer; 10. first cylinder; 11. second cylinder; 12. third cylinder; 13. second cavity; 14. first through hole; 15. feed screw; 16. rotating shaft; 17. motor; 18. first partition plate; 19. first sub-cavity; 20. second through hole; 21. second partition plate; 22. second sub-cavity; 23. discharge chamber; 24. gas distributor; 25. S-shaped heat exchange tube; 26. water outlet pipe; 27. electric heating tube; 28. support seat; 29. gas supply pipe. DETAILED DESCRIPTION
[0023] The present invention will be described clearly and completely below with reference to the accompanying drawings.
[0024] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation for the convenience of expression and do not represent a sequential relationship.
[0025] like Figure 1 As shown, the environmentally friendly zeolite regeneration device described in the utility model includes a regeneration bin 1, a catalytic decomposition bin 2, a heat exchanger 3 and an electric heater 4. The top of the regeneration bin 1 is provided with a feed port 5 and an organic waste gas outlet 6, and the bottom of the regeneration bin 1 is provided with a discharge port 7 and a high-temperature gas inlet 8. The high-temperature gas inlet 8 is connected to the refrigerant outlet of the heat exchanger 3 through the electric heater 4, and the refrigerant inlet of the heat exchanger 3 is connected to the gas supply pipe 29. The heat medium inlet of the heat exchanger 3 is connected to the gas outlet at the top of the catalytic decomposition bin 2, and the gas inlet at the bottom of the catalytic decomposition bin 2 is connected to the organic waste gas outlet 6 of the regeneration bin 1. A catalyst layer 9 is provided in the catalytic decomposition bin 2;
[0026] like Figure 2 As shown, the regeneration chamber 1 includes a first cylinder 10, a second cylinder 11 and a third cylinder 12. The first cylinder 10, the second cylinder 11 and the third cylinder 12 are hollow and coaxial cylindrical structures. The first cylinder 10 forms a first cavity in the inner cavity, a second cavity 13 is formed between the first cylinder 10 and the second cylinder 11, and a third cavity is formed between the second cylinder 11 and the third cylinder 12. The side wall of the first cylinder 10 is distributed with a plurality of first through holes 14. The first cavity and the second cavity 13 are only connected through the first through hole 14, a feeding screw 15 is provided on the side wall of the first cylinder 10, the feeding screw 15 is arranged in the second cavity 13, the outer edge of the feeding screw 15 slides against the side wall of the second cylinder 11, a rotating shaft 16 is fixed at the central axis of the first cylinder 10, the rotating shaft 16 is fixedly connected to the output end of the motor 17, a plurality of first partition plates 18 are provided from top to bottom in the first cavity, and the first partition plates 18 divide the first cavity into a plurality of first sub-cavities 19 arranged up and down;
[0027] A plurality of second through holes 20 are distributed on the side wall of the second cylinder 11, and the second cavity 13 and the third cavity are connected only through the second through holes 20. A plurality of second partition plates 21 are arranged from top to bottom in the third cavity, and the second partition plates 21 are staggered with the first partition plates 18. The second partition plates 21 divide the third cavity into a plurality of second sub-cavities 22 arranged vertically; the upper end of the second cavity 13 is connected to the feed port 5, and the lower end of the second cavity 13 is connected to the discharge port 7. The second sub-cavity 22 at the lower end is connected to the high-temperature gas inlet 8, and the second sub-cavity 22 at the upper end is connected to the organic waste gas outlet 6.
[0028] The discharge port 7 is connected to the discharge bin 23 .
[0029] A gas distributor plate 24 is provided between the gas inlet at the bottom of the catalytic decomposition chamber 2 and the catalyst layer 9 .
[0030] A transverse S-shaped heat exchange tube 25 is provided inside the heat exchanger 3, and the two ends of the transverse S-shaped heat exchange tube are respectively the heat medium inlet and the heat medium outlet of the heat exchanger 3. A water outlet pipe 26 is provided at the bottom of the transverse S-shaped heat exchange tube 25. The carbon dioxide and water obtained after the decomposition of the organic waste gas absorb heat when passing through the S-shaped heat exchange tube 25, and part of the water vapor may remain in the tube, and after a long time, liquid may be formed and accumulated at the bottom of the tube. The water outlet pipe 26 can be opened regularly to discharge this part of water to avoid clogging of the S-shaped heat exchange tube 25.
[0031] An electric heating tube 27 is provided inside the electric heater 4 .
[0032] The first cylinder 10 includes an upper top surface and a lower bottom surface. The rotating shaft 16 passes through the upper top surface and the lower bottom surface and is fixedly connected to both the upper top surface and the lower bottom surface.
[0033] It also includes a support seat 28 , and the rotating shaft 16 passes through the first cylinder 10 and is rotatably connected to the support seat 28 .
[0034] The working process is as follows: the zeolite particles to be desorbed enter the second cavity 13 of the regeneration bin 1 through the feed port 5, the motor 17 is started, the shaft 16 drives the first cylinder 10 to rotate, and the zeolite particles are slowly transported downward in the second cavity 13 under the action of the feeding screw 15. During this period, the high-temperature air inlet 8 transports high-temperature air to the third cavity, first entering the second sub-cavity 22 at the bottom, and then under the blocking effect of the second partition plate 21, the high-temperature air passes through the second through hole 20, the second cavity 13 and the first through hole 14 in turn into the first sub-cavity 19, and then under the blocking effect of the first partition plate 18, it passes through the first through hole 14, the second cavity 13 and the second through hole 20 in turn into the second sub-cavity 22 of the upper layer, and so on. The two cavities 13 will heat the zeolite therein to regenerate the zeolite, and the zeolite is pushed downward by the feeding screw 15. During the pushing process, hot air is continuously introduced to heat the zeolite to achieve regeneration. The regenerated zeolite is discharged through the discharge port 7 and stored in the discharge bin 23; the hot air carrying the desorbed organic waste gas enters the second sub-chamber 22 at the top and is discharged from the organic waste gas outlet 6, and enters the catalytic decomposition bin 2 after being evenly divided by the gas separator 24. Under the action of the catalyst layer 9, it is decomposed into carbon dioxide and water and releases heat. The decomposed gas enters the heat exchanger 3 as a heat medium, and preheats the airflow transported by the air supply pipe 29 and is discharged from the heat medium outlet of the heat exchanger 3. The preheated air enters the electric heater 4 for further heating and is then sent to the regeneration bin 1 as a high-temperature gas for zeolite regeneration.
Claims
1. An environmentally friendly zeolite regeneration device, characterized in that: The invention comprises a regeneration chamber (1), a catalytic decomposition chamber (2), a heat exchanger (3) and an electric heater (4); the top of the regeneration chamber (1) is provided with a feed inlet (5) and an organic waste gas outlet (6); the bottom of the regeneration chamber (1) is provided with a feed outlet (7) and a high-temperature gas inlet (8); the high-temperature gas inlet (8) is connected to a refrigerant outlet of the heat exchanger (3) through the electric heater (4); the refrigerant inlet of the heat exchanger (3) is connected to a gas supply pipe (29); the heat medium inlet of the heat exchanger (3) is connected to a gas outlet at the top of the catalytic decomposition chamber (2); the gas inlet at the bottom of the catalytic decomposition chamber (2) is connected to the organic waste gas outlet (6) of the regeneration chamber (1); and a catalyst layer (9) is provided in the catalytic decomposition chamber (2); The regeneration chamber (1) comprises a first cylinder (10), a second cylinder (11) and a third cylinder (12); the first cylinder (10), the second cylinder (11) and the third cylinder (12) are hollow and coaxial cylindrical structures; the inner cavity of the first cylinder (10) forms a first cavity; a second cavity (13) is formed between the first cylinder (10) and the second cylinder (11); a third cavity is formed between the second cylinder (11) and the third cylinder (12); a plurality of first through holes (14) are distributed on the side wall of the first cylinder (10); the first cavity and the second cavity (13) are connected to each other; 3) are connected only through the first through hole (14), a feeding screw (15) is provided on the side wall of the first cylinder (10), the feeding screw (15) is arranged in the second cavity (13), the outer edge of the feeding screw (15) slides against the side wall of the second cylinder (11), a rotating shaft (16) is fixed at the central axis of the first cylinder (10), the rotating shaft (16) is fixedly connected to the output end of the motor (17), a plurality of first partition plates (18) are provided from top to bottom in the first cavity, the first partition plates (18) divide the first cavity into a plurality of first sub-cavities (19) arranged in an upper and lower manner; A plurality of second through holes (20) are distributed on the side wall of the second cylinder (11); the second cavity (13) and the third cavity are connected only through the second through holes (20); a plurality of second partition plates (21) are arranged from top to bottom in the third cavity; the second partition plates (21) and the first partition plates (18) are arranged in an alternating manner; the second partition plates (21) divide the third cavity into a plurality of second sub-cavities (22) arranged in an upper and lower arrangement; the upper end of the second cavity (13) is connected to the feed port (5); the lower end of the second cavity (13) is connected to the discharge port (7); the second sub-cavity (22) at the lowermost end is connected to the high-temperature gas inlet (8); and the second sub-cavity (22) at the uppermost end is connected to the organic waste gas outlet (6).
2. The environmentally friendly zeolite regeneration device according to claim 1, characterized in that: The discharge port (7) is connected to the discharge bin (23).
3. The environmentally friendly zeolite regeneration device according to claim 1, characterized in that: A gas separation plate (24) is provided between the gas inlet at the bottom of the catalytic decomposition chamber (2) and the catalyst layer (9).
4. The environmentally friendly zeolite regeneration device according to claim 1, characterized in that: A transverse S-shaped heat exchange tube (25) is provided inside the heat exchanger (3), and two ends of the transverse S-shaped heat exchange tube are respectively a heat medium inlet and a heat medium outlet of the heat exchanger (3).
5. The environmentally friendly zeolite regeneration device according to claim 4, characterized in that: A water outlet pipe (26) is provided at the bottom of the transverse S-shaped heat exchange tube (25).
6. The environmentally friendly zeolite regeneration device according to claim 1, characterized in that: An electric heating tube (27) is provided inside the electric heater (4).
7. The environmentally friendly zeolite regeneration device according to claim 1, characterized in that: The first cylinder (10) comprises an upper top surface and a lower bottom surface, and the rotating shaft (16) passes through the upper top surface and the lower bottom surface and is fixedly connected to both the upper top surface and the lower bottom surface.
8. The environmentally friendly zeolite regeneration device according to claim 1, characterized in that: It also includes a support seat (28), and the rotating shaft (16) passes through the first cylinder (10) and is rotatably connected to the support seat (28).