Rotating wheel all-in-one machine for waste gas recovery
By utilizing the reflux and temperature control structures of the integrated rotary turbine, the problem of high energy consumption in the treatment of low-concentration waste gas is solved, achieving efficient waste gas treatment and energy utilization, and reducing equipment operating energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 广东鹏锦智能装备股份有限公司
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-28
AI Technical Summary
Low-temperature condensation is energy-intensive when treating low-concentration waste gas, and it is difficult to achieve saturated separation. It requires a continuous supply of a large amount of cold and heat sources.
The integrated desorption and condensation unit utilizes a reflux structure, a temperature control structure, and a detection structure. By monitoring the concentration and temperature of the exhaust gas through the adsorption rotor, reflux pipe, temperature control component, and detector, the unit adjusts the speed of the adsorption rotor and the operation of the temperature control component to achieve efficient desorption and condensation of the exhaust gas and reduce energy consumption.
It improves the treatment quality of low-concentration waste gas, reduces operating energy consumption, avoids equipment blockage, and improves operational stability and energy utilization efficiency.
Smart Images
Figure CN224167229U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of waste gas treatment equipment technology, and in particular to a rotary integrated machine for waste gas recovery. Background Technology
[0002] VOCs (volatile organic compounds) refer to organic compounds that have high saturated vapor pressure, low boiling point, and small molecular weight under standard conditions, and are easily volatile at room temperature. They are one of the main air pollutants and require recovery and treatment before emission. There are various methods for recovering VOCs, such as water absorption, condensation, and membrane separation. Low-temperature condensation, which lowers the temperature to convert gaseous volatile organic compounds into other forms and separates them from the gas, has the advantage of recovering high concentrations of waste liquid, thus making it widely applicable in recovery treatment. However, when treating waste gas with low inlet concentrations, low-temperature condensation makes it difficult to achieve saturation separation, requiring a continuous supply of a large amount of cold and heat sources for operation, resulting in high energy consumption. Utility Model Content
[0003] The purpose of this application is to provide an integrated rotary drum unit for waste gas recovery, which aims to improve the treatment quality of low-concentration waste gas by the waste gas treatment device and reduce operating energy consumption.
[0004] This application provides an integrated rotary drum unit for waste gas recovery, including a housing, and further including an adsorption structure, a reflux structure, a temperature control structure, and a detection structure disposed in the housing; the adsorption structure includes an adsorption pipe passing through the housing, an adsorption rotor disposed in the adsorption pipe, and a speed regulating component connected to the adsorption rotor; the adsorption pipe has a waste gas inlet and a waste gas outlet, the reflux structure includes a reflux pipe connected to one end of the waste gas inlet and one end of the waste gas outlet, the reflux pipe passing through the adsorption rotor, and the temperature control structure disposed in the reflux pipe; the detection structure includes a plurality of temperature transmitters and a gas concentration meter disposed in the adsorption pipe and the reflux pipe.
[0005] Furthermore, the adsorption rotor has an adsorption zone, a cooling zone, and a desorption zone; the reflux pipe is divided into a cooling section, a transfer section, and a regeneration section along its length; the cooling section connects the adsorption pipe and the cooling zone of the adsorption rotor; the transfer section connects the cooling zone and the desorption zone of the adsorption rotor; and the regeneration section connects the desorption zone of the adsorption rotor and the adsorption pipe.
[0006] Furthermore, the gas concentration meter is located in the regeneration section; several temperature transmitters are respectively located in the adsorption pipeline, the transfer section, and the regeneration section.
[0007] Furthermore, the temperature control structure includes a first temperature control component disposed in the transfer section, a second temperature control component disposed in the regeneration section, and a compression component, wherein the first temperature control component and the second temperature control component are connected to the compression component.
[0008] Furthermore, the first temperature control component includes a condenser and an auxiliary heater, the condenser being connected to the compression component.
[0009] Furthermore, the second temperature control component includes a main evaporator and a backup evaporator, the main evaporator and the backup evaporator being connected to the compression component, and the regeneration section being connected to the main evaporator and the backup evaporator.
[0010] Furthermore, the second temperature control component also includes a gas-to-gas heat exchanger, which is disposed in the regeneration section and located between the desorption zone of the adsorption rotor and the main evaporator. The regeneration section returns to the gas-to-gas heat exchanger after passing through the gas-to-gas heat exchanger and the main evaporator.
[0011] Furthermore, the return pipe is equipped with a return valve for controlling the flow rate.
[0012] The beneficial effects of this application are:
[0013] 1. This application discloses an integrated rotary drum unit for waste gas recovery. By incorporating a reflux structure, a temperature control structure, and a detection structure, waste gas is continuously introduced into the adsorption pipe during operation. A speed-regulating component drives the adsorption drum to rotate and adsorb the waste gas. The adsorbed waste gas is then returned to the adsorption drum for further treatment via the reflux pipe. The temperature control structure heats or cools the waste gas to achieve desorption and cooling. The detection structure uses a temperature transmitter and a gas concentration meter to monitor the gas temperature and concentration in the adsorption and reflux pipes. Based on the gas temperature and concentration, the gas treatment status can be determined, allowing for speed adjustment of the adsorption drum. Especially when the waste gas concentration is low, controlling the speed of the adsorption drum controls the concentration ratio, ensuring the waste gas reaches its maximum desorption concentration. This keeps the integrated drum in a continuously efficient desorption state, achieving energy savings, reducing operating energy consumption, and improving the waste gas treatment effect.
[0014] 2. This application discloses a rotary integrated machine for waste gas recovery. The detection structure includes temperature transmitters installed at multiple locations in the adsorption pipe and the return pipe, and a gas concentration meter installed in the regeneration section. This allows for monitoring of the entire gas treatment process, thereby facilitating the determination of the gas treatment status based on temperature and concentration data.
[0015] 3. This application discloses a rotary integrated machine for waste gas recovery. The second temperature control component is equipped with a main evaporator and a backup evaporator. During operation, one of the evaporators is in operation, which can effectively avoid the situation where low-temperature condensation causes channel blockage and equipment shutdown, thereby increasing the operational stability of the integrated machine. At the same time, by setting up a gas-to-gas heat exchanger, the regeneration section is deflected back to the gas-to-gas heat exchanger. After the gas is cooled, it can return to the gas-to-gas heat exchanger to pre-cool the gas about to enter the evaporator, thereby reducing energy waste and further improving the energy efficiency of the integrated machine. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a rotary integrated machine for waste gas recovery provided in an embodiment of this application;
[0017] Figure 2 This is a schematic diagram of the combined structure of the adsorption structure, reflux structure and detection structure in the embodiments of this application.
[0018] Explanation of reference numerals in the attached figures:
[0019] 1. Shell; 2. Adsorption structure; 21. Adsorption pipe; 211. Waste gas inlet; 212. Waste gas outlet; 22. Adsorption rotor; 221. Adsorption zone; 222. Cooling zone; 223. Desorption zone; 23. Speed regulating component; 3. Reflux structure; 31. Reflux pipe; 311. Cooling section; 312. Transfer section; 313. Regeneration section; 32. Reflux valve; 4. Temperature control structure; 41. First temperature control component; 411. Condenser; 412. Auxiliary heater; 42. Second temperature control component; 421. Main evaporator; 422. Backup evaporator; 423. Gas-gas heat exchanger; 43. Compression component; 431. Compressor; 432. Oil-gas separator; 433. Dryer; 434. Expansion valve; 5. Detection structure; 51. Temperature transmitter; 52. Gas concentration meter. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0021] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.
[0023] Reference Figure 1 as well as Figure 2 This application provides a rotary integrated machine for waste gas recovery, including a housing 1, and an adsorption structure 2, a reflux structure 3, a temperature control structure 4, and a detection structure 5 disposed on the housing 1. When the rotary integrated machine is running, waste gas is introduced into the adsorption structure 2, and the adsorption structure 2 adsorbs the waste gas. After adsorption treatment, the waste gas passes through the reflux structure 3 and then through the temperature control structure 4, the adsorption structure 2, and the detection structure 5 for regeneration and desorption. When the waste gas passes through the temperature control structure 4, the temperature control structure 4 lowers the temperature to convert the gaseous volatile organic compounds into other forms and separate them from the gas.
[0024] Specifically, the outer casing is used to support and accommodate the various structures for easy installation. The adsorption structure 2 includes an adsorption pipe 21 passing through the casing 1, an adsorption wheel 22 disposed in the adsorption pipe 21, and a speed regulating component 23 connected to the adsorption wheel 22. The adsorption pipe 21 has a waste gas inlet 211 and a waste gas outlet 212. Waste gas enters from the waste gas inlet 211, and after treatment, part of the waste gas is discharged from the waste gas outlet 212. In this embodiment, the adsorption rotor 22 is located in the middle of the adsorption pipe 21. The adsorption rotor 22 is a zeolite molecular sieve and is driven by a speed regulating component 23, which is a variable frequency speed control motor. Under the drive of the speed regulating component 23, the adsorption rotor 22 rotates continuously. The adsorption rotor 22 has an adsorption zone 221, a cooling zone 222, and a desorption zone 223. When the waste gas passes through the adsorption zone 221, the VOCs in the waste gas are adsorbed by the adsorption rotor 22. The organic waste gas VOCs in the adsorption rotor 22 are desorbed and concentrated to a level of 5-15 times by hot air treatment in the desorption zone 223. After being cooled in the cooling zone 222, the adsorption rotor 22 continues to desorb. The adsorption rotor 22 is existing technology and can be purchased. Its specific structure and working principle will not be described in detail.
[0025] The reflux structure 3 includes a reflux pipe 31 connected to one end of the exhaust gas inlet 211 and one end of the exhaust gas outlet 212. The reflux pipe 31 passes through the adsorption rotor 22 and is equipped with a reflux valve 32 for controlling the flow rate. The reflux pipe 31 is divided into a cooling section 311, a transfer section 312, and a regeneration section 313 along its length. The cooling section 311 connects the adsorption pipe 21 and the cooling zone 222 of the adsorption rotor 22; the transfer section 312 connects the cooling zone 222 and the desorption zone 223 of the adsorption rotor 22; and the regeneration section 313 connects the desorption zone 223 of the adsorption rotor 22 and the adsorption pipe 21.
[0026] Low-concentration waste gas passes through adsorption pipe 21 and then through adsorption rotor 22. The waste gas is adsorbed by adsorption rotor 22 and becomes qualified gas. Part of this qualified waste gas is discharged from waste gas outlet 212 and enters the next treatment process. Part of it passes through return pipe 31 and enters cooling zone 222 and desorption zone 223 in sequence before returning to adsorption pipe 21. It then merges with the newly entered waste gas and enters adsorption rotor 22. The ratio of discharged waste gas to returned waste gas can be controlled by return valve 32.
[0027] Temperature control structure 4 is located in return pipe 31. Temperature control structure 4 includes a first temperature control component 41 located in transfer section 312, a second temperature control component 42 located in regeneration section 313, and a compression component 43. The first temperature control component 41 and the second temperature control component 42 are connected to the compression component 43. Compression component 43 includes a compressor 431, an oil-gas separator 432, a dryer 433, an expansion valve 434, and a compression pipe. The compression pipe is filled with a heat exchange medium. Compression component 43 is used to compress and release the heat exchange medium to achieve heat exchange between the first temperature control component 41 and the second temperature control component 42. Compression component 43 is prior art and can be purchased, so it will not be described in detail.
[0028] The first temperature control component 41 includes a condenser 411 and an auxiliary heater 412. The condenser 411 is connected to the compression component 43. The condenser 411 initially heats the gas, and the auxiliary heater 412 further heats the gas so that the gas temperature meets the desorption standard. In this embodiment, the gas temperature after passing through the auxiliary heater 412 will be increased to 100°C~140°C. After the gas enters the desorption zone 223, it desorbs the organic matter adsorbed in the adsorption wheel 22 and then enters the second temperature control component 42.
[0029] The second temperature control component 42 includes a main evaporator 421 and a standby evaporator 422, which are connected to the compression component 43. A return pipe 31 is connected to both the main evaporator 421 and the standby evaporator 422. The main evaporator 421 and the standby evaporator 422 are used to cool the gas, and only one of them operates at a time to avoid equipment shutdown due to channel blockage caused by low-temperature condensation during the cooling process.
[0030] Furthermore, since some organic matter in the waste gas needs to be condensed to -40℃ before it can be converted into other forms and separated from the gas, meaning the temperature of the waste gas after passing through the evaporator is -40℃, directly returning this waste gas to the adsorption pipe 21 would result in energy waste. Therefore, the second temperature control component 42 also includes a gas-to-gas heat exchanger 423. The gas-to-gas heat exchanger 423 is located in the regeneration section 313, between the desorption zone 223 of the adsorption rotor 22 and the main evaporator 421. After passing through the gas-to-gas heat exchanger 423 and the main evaporator 421, the regeneration section 313 returns to the gas-to-gas heat exchanger 423. That is, after extending from the desorption zone 223, the regeneration section 313 sequentially passes through the gas-to-gas heat exchanger 423, the evaporator, and then back to the adsorption pipe 21. The waste gas after passing through the evaporator passes through the gas-to-gas heat exchanger 423 again to pre-cool the waste gas before it enters the evaporator, thereby effectively reducing the energy consumption of the evaporator and achieving energy-saving effects. It is understandable that the number, location, and opening / closing status of the gas-to-gas heat exchangers 423 can be adjusted according to actual conditions such as the type and concentration of the waste gas.
[0031] The detection structure 5 includes several temperature transmitters 51 and gas concentration meters 52 disposed in the adsorption pipe 21 and the return pipe 31. The temperature transmitters 51 are respectively disposed in the adsorption pipe 21, the transfer section 312, and the regeneration section 313. The temperature transmitters 51 can be replaced by temperature sensors. In this embodiment, there is one gas concentration meter 52 disposed in the regeneration section 313; there are four temperature transmitters 51 disposed in the adsorption pipe 21, before the condenser 411 of the transfer section 312, after the auxiliary heater 412 of the transfer section 312, and in the regeneration section 313. At the same time, the temperature transmitters 51 and the gas concentration meters 52 are electrically connected to the speed regulating component 23. By measuring the temperature and concentration of the waste gas through the temperature transmitters 51 and the gas concentration meters 52, the type and state of the waste gas being treated can be easily determined, and the speed regulating component 23 can be adjusted according to the type and state.
[0032] By setting up the integrated machine in this way, when treating waste gas with low concentration, the speed of the adsorption wheel 22 can be adjusted by the speed regulating component 23, so that the speed of the adsorption wheel 22 is reduced, and the large volume of low-concentration waste gas is converted into a small volume of high-concentration gas for treatment. The compression component 43 can realize heat recovery and exchange to condense the high-concentration gas, thereby effectively reducing the equipment size and operating energy consumption of the condensation adsorption method and achieving energy saving effect.
[0033] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.
Claims
1. A rotary drum integrated machine for waste gas recovery, comprising a housing (1), characterized in that, It also includes an adsorption structure (2), a reflux structure (3), a temperature control structure (4), and a detection structure (5) disposed in the housing (1); the adsorption structure (2) includes an adsorption pipe (21) passing through the housing (1), an adsorption wheel (22) disposed in the adsorption pipe (21), and a speed regulating component (23) connected to the adsorption wheel (22); the adsorption pipe (21) has a waste gas inlet (211) and a waste gas outlet (212); the reflux structure (3) includes a reflux pipe (31) connected to one end of the waste gas inlet (211) and one end of the waste gas outlet (212); the reflux pipe (31) passes through the adsorption wheel (22); the temperature control structure (4) is disposed in the reflux pipe (31); the detection structure (5) includes several temperature transmitters (51) and a gas concentration meter (52) disposed in the adsorption pipe (21) and the reflux pipe (31).
2. The integrated rotary drum machine for waste gas recovery according to claim 1, characterized in that, The adsorption rotor (22) has an adsorption zone (221), a cooling zone (222), and a desorption zone (223); the return pipe (31) is divided into a cooling section (311), a transfer section (312), and a regeneration section (313) along its length. The cooling section (311) connects the adsorption pipe (21) and the cooling zone (222) of the adsorption rotor (22); the transfer section (312) connects the cooling zone (222) and the desorption zone (223) of the adsorption rotor (22); and the regeneration section (313) connects the desorption zone (223) of the adsorption rotor (22) and the adsorption pipe (21).
3. The integrated rotary drum machine for waste gas recovery according to claim 2, characterized in that, The gas concentration meter (52) is located in the regeneration section (313); a number of temperature transmitters (51) are respectively located in the adsorption pipe (21), the transfer section (312) and the regeneration section (313).
4. A rotary drum integrated machine for waste gas recovery according to claim 2 or 3, characterized in that, The temperature control structure (4) includes a first temperature control component (41) disposed in the transfer section (312), a second temperature control component (42) disposed in the regeneration section (313), and a compression component (43), wherein the first temperature control component (41) and the second temperature control component (42) are connected to the compression component (43).
5. A rotary integrated machine for waste gas recovery according to claim 4, characterized in that, The first temperature control component (41) includes a condenser (411) and an auxiliary heater (412), wherein the condenser (411) is connected to the compression component (43).
6. The integrated rotary drum machine for waste gas recovery according to claim 4, characterized in that, The second temperature control component (42) includes a main evaporator (421) and a backup evaporator (422), the main evaporator (421) and the backup evaporator (422) being connected to the compression component (43), and the regeneration section (313) being connected to the main evaporator (421) and the backup evaporator (422).
7. A rotary drum integrated machine for waste gas recovery according to claim 6, characterized in that, The second temperature control component (42) further includes a gas-to-gas heat exchanger (423), which is disposed in the regeneration section (313) and located between the desorption zone (223) of the adsorption rotor (22) and the main evaporator (421). The regeneration section (313) passes through the gas-to-gas heat exchanger (423) and the main evaporator (421) and then returns to the gas-to-gas heat exchanger (423).
8. The integrated rotary drum machine for waste gas recovery according to claim 1, characterized in that, The return pipe (31) is equipped with a return valve (32) for controlling the flow rate.