Rotating wheel device and waste gas treatment system
By designing a rotary device, the high-temperature gas heat energy is captured by the flue gas duct and heat exchange components, solving the problem of unrecovered heat in the incinerator, realizing heat reuse and energy saving, reducing operating costs and protecting the environment.
Patent Information
- Application Number
- CN202423182642.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In existing technologies, the heat from the high-temperature gases generated by incinerators cannot be effectively recovered and reused, resulting in energy waste and increased operating costs.
Design a rotary device including an incinerator, a flue gas duct, a rotary wheel assembly and a heat exchange assembly. The device captures the thermal energy of high-temperature gas through the flue gas duct and the heat exchange assembly, and uses it to heat the gas in the rotary wheel assembly, thereby realizing heat recovery and reuse.
It enables the recovery and reuse of heat from the gas after combustion in the incinerator, saving energy, reducing operating costs, and protecting the environment.
Smart Images
Figure CN223622929U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste gas treatment technology, and more specifically, to a rotary device and a waste gas treatment system. Background Technology
[0002] In existing technologies, zeolite rotors concentrate organic waste gas, which is then subjected to high-temperature oxidation in an incinerator, significantly meeting environmental protection requirements such as achieving emission standards for organic matter and reducing pollution. The typical operating procedure for conventional zeolite rotor and direct-fired incinerator systems includes: organic waste gas first undergoes adsorption and concentration in a zeolite rotor, followed by high-concentration oxidation in the incinerator. During this process, the combustion of organic matter releases a large amount of heat.
[0003] However, the inventors discovered that in conventional operating systems of existing technologies, the high-temperature gas generated by the combustion furnace is directly emitted, resulting in the ineffective recovery and reuse of heat from this gas, leading to a significant waste of energy. This not only increases operating costs but also has a certain impact on the environment. Utility Model Content
[0004] The purpose of this utility model is to provide a rotary device and a waste gas treatment system, including an incinerator, a flue gas duct, a rotary device assembly, and a heat exchange assembly. The flue gas duct is connected to the outlet of the incinerator for discharging the high-temperature gas generated by the incinerator to the outside. The heat exchange assembly is installed on the flue gas duct to capture the heat energy carried by the high-temperature gas in the flue gas duct, thereby heating the gas entering the rotary device assembly. Based on the above, the rotary device assembly includes a rotary wheel, a cooling gas inlet pipe, a cooling gas delivery pipe, a first hot gas delivery pipe, and a concentrated waste gas pipe. The rotary wheel has a cooling zone and a desorption zone. During the operation of the rotary device, the heat energy of the incinerator is transferred to the desorption zone of the rotary wheel by the airflow passing through the flue gas duct, heat exchange assembly, and rotary device assembly, thereby increasing efficiency through heating. Therefore, the rotary device provided in this application can recover and reuse the heat of the gas after combustion in the incinerator, saving energy consumption, reducing operating costs, and protecting the environment. Attached Figure Description
[0005] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0006] Figure 1 This is a schematic diagram of the structure of the rotary device provided in this embodiment;
[0007] Figure 2 This is a schematic diagram of the structure of the wheel provided in this embodiment;
[0008] Figure 3 This is a schematic diagram of the incinerator, flue gas duct, and heat exchange components provided in this embodiment.
[0009] Figure 4 The schematic diagram shows that there are two rotor assemblies and two heat exchange assemblies provided in this embodiment.
[0010] Icons: 10-Rotator assembly; 100-Incinerator; 300-Flue gas duct; 500-Rotator assembly; 510-Rotator; 511-Adsorption zone; 513-Cooling zone; 515-Desorption zone; 521-Cooling gas inlet pipeline; 522-Cooling gas delivery pipeline; 523-First hot gas delivery pipeline; 524-Concentrated waste gas pipeline; 5241-Desorption fan; 525-Second hot gas delivery pipeline; 526-Second bypass pipeline; 5261-Control valve; 531-Waste gas inlet pipeline; 533-Clean gas pipeline; 5331-Adsorption fan; 700-Heat exchange assembly; 710-First heat exchanger; 730-Second heat exchanger; 900-Chimney. Detailed Implementation
[0011] The rotary device in the related technology directly discharges the high-temperature gas generated by the combustion furnace, resulting in the failure to effectively recover and reuse the heat in this high-temperature gas, causing a large amount of energy waste.
[0012] To address the aforementioned problems, this utility model provides a rotary device 10 and a waste gas treatment system, which can recover and reuse the heat of the gas after combustion in the incinerator 100, saving energy consumption, thereby achieving the beneficial effects of reducing operating costs and protecting the environment.
[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0014] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0015] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0016] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0017] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0018] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0019] The following describes in detail the overall structure, working principle, and technical effects of the rotary device 10 and the waste gas treatment system provided by this utility model through embodiments and in conjunction with the accompanying drawings.
[0020] Figure 1 This is a schematic diagram of the structure of the rotating device 10 provided in this embodiment. Figure 2 This is a schematic diagram of the structure of the rotor 510 provided in this embodiment. Figure 3 For a structural schematic diagram of the incinerator 100, flue gas duct 300, and heat exchange assembly 700 provided in this embodiment, please refer to [link / reference]. Figure 1 and Figure 3 This utility model provides a rotary device 10, which is applied in a waste gas treatment system and can achieve the beneficial effect of recovering and reusing the heat of the gas after combustion in the incinerator 100.
[0021] The rotary device 10 includes an incinerator 100, a flue gas duct 300, a rotary assembly 500, and a heat exchange assembly 700. The flue gas duct 300 is connected to the outlet of the incinerator 100 and is used to discharge the high-temperature gas generated by the incinerator 100 to the outside. The heat exchange assembly 700 is disposed on the flue gas duct 300 and is used to capture the heat energy carried by the high-temperature gas in the flue gas duct 300, thereby heating the gas entering the rotary assembly 500. Based on the above, the rotary assembly 500 includes a rotary wheel 510, a cooling gas inlet pipe 521, a cooling gas delivery pipe 522, a first hot gas delivery pipe 523, and a concentrated waste gas pipe 524. The rotary wheel 510 is provided with a cooling zone 513 and a desorption zone 515.
[0022] Based on the above, since the two opposite sides of the cooling zone 513 are connected to the cooling gas inlet pipe 521 and the cooling gas delivery pipe 522 respectively, the cooling air introduced from the cooling gas inlet pipe 521 passes through the cooling zone 513, reducing the temperature of the rotor assembly 500. Furthermore, since the inlet and outlet of the first heat exchanger 710 are connected to the cooling gas delivery pipe 522 and the first hot gas delivery pipe 523 respectively, the cooling air leaving the cooling zone 513 is heated by the first heat exchanger 710 and transformed into desorbed hot air.
[0023] Subsequently, since the desorption zone 515 is connected to the first hot gas delivery pipeline 523 and the concentrated waste gas pipeline 524 on opposite sides, the desorption hot air passes through the adsorption zone 511, removing the organic compounds in the adsorption zone 511. During this process, the originally clean desorption hot air absorbs and carries away the desorbed organic compounds, transforming from clean air into concentrated waste gas containing organic compounds. Furthermore, since the inlet and outlet of the second heat exchanger 730 are connected to the concentrated waste gas pipeline 524 and the inlet of the incinerator 100, respectively, the concentrated waste gas, after being further preheated by the second heat exchanger 730, is sent to the incinerator 100 for high-temperature incineration.
[0024] It should be added that desorption refers to the process of releasing VOCs (volatile organic compounds) from the adsorbent material. In the above process, the heat energy of the incinerator 100 is transferred to the desorption zone 515 of the rotor 510 through the airflow in the flue gas duct 300, heat exchange assembly 700, and rotor assembly 500. This heating increases the thermal motion of VOC molecules, making it easier for them to detach from the adsorbent material and increasing the desorption efficiency. In other words, the rotor device 10 provided in this application can recover and reuse the heat from the gas after combustion in the incinerator 100, saving energy, reducing operating costs, and protecting the environment.
[0025] Additionally, it should be noted that the aforementioned adsorption-capable rotor 510 can be a zeolite concentration rotor 510 or a rotor 510 made of other materials. The heat exchanger in the heat exchange assembly 700 is a shell-and-tube heat exchanger, which facilitates heat recovery through physical heat exchange without the addition of fuel.
[0026] In some embodiments, such as 1 and Figure 2 As shown, the rotor assembly 500 also includes an exhaust gas inlet pipe 531 and a clean gas pipe 533. The rotor 510 also includes an adsorption zone 511, with its opposite sides connected to the exhaust gas inlet pipe 531 and the clean gas pipe 533, respectively. It should be noted that the exhaust gas supplied by the exhaust gas inlet pipe 531, during its passage through the adsorption zone 511, has its VOCs adsorbed by the adsorption zone 511, thus transforming it into clean gas, which is then discharged from the clean gas pipe 533.
[0027] In addition, the rotor assembly 500 also includes an adsorption fan 5331, which is installed on the clean gas pipeline 533 to regulate the gas flow rate within the clean gas pipeline 533. Similarly, the rotor assembly 500 also includes a desorption fan 5241, which is installed on the concentrated waste gas pipeline 524 to regulate the gas flow rate within the concentrated waste gas pipeline 524. It is easy to understand that by adjusting the gas flow rate within the clean gas pipeline 533 / concentrated waste gas pipeline 524, the operating requirements of the entire rotor device 10 can be better matched, avoiding insufficient purification due to excessively high flow rates or low treatment efficiency due to excessively low flow rates.
[0028] Additionally, it should be noted that the cooling air introduced into the cooling zone 513 mentioned above can achieve the beneficial effect of providing suitable temperature conditions for this adsorption process. Since the purpose of the cooling air is to cool the rotor 510, its composition or concentration is not specifically limited. For example, the cooling air can be fresh air, or clean air from the clean air pipeline 533, or exhaust gas from the exhaust gas inlet pipeline 531.
[0029] Specifically, in the embodiment where the cooling air is exhaust gas from the exhaust gas inlet pipe 531, the impeller assembly 500 also includes a first bypass pipe, which connects the exhaust gas inlet pipe 531 and the cooling gas inlet pipe 521. It is readily understood that, based on the first bypass pipe, a portion of the gas can be directly extracted from the exhaust gas as cooling air, eliminating the need for an external cooling source.
[0030] Please refer to it again. Figure 1 The rotor assembly 500 also includes a second hot gas delivery pipe 525 and a second bypass pipe 526. The second hot gas delivery pipe 525 connects the outlet of the second heat exchanger 730 and the inlet of the incinerator 100, while the second bypass pipe 526 connects the second hot gas delivery pipe 525 and the concentrated waste gas pipe 524. Based on the aforementioned second bypass pipe 526, the concentrated waste gas is divided into two parts: one part enters the second heat exchanger 730 for heating before entering the second hot gas delivery pipe 525; the other part enters directly into the second hot gas delivery pipe 525. It is easy to understand that this differentiated design provides additional operational flexibility, allowing for adjustments to the system configuration under different operating conditions to optimize performance and efficiency.
[0031] Building upon the above, to achieve precise control of the concentrated waste gas temperature, the impeller assembly 500 also includes a control valve 5261. The control valve 5261 is located in the second bypass pipe 526 and is used to adjust the airflow from the concentrated waste gas pipe 524 into the second hot gas delivery pipe 525 via the second bypass pipe 526. It is easy to understand that by adjusting the concentrated waste gas flow rate in the second bypass pipe 526 through the control valve 5261, the flow rate of concentrated waste gas entering the second heat exchanger 730 can be correspondingly adjusted. In particular, when there is insufficient waste heat in the flue gas duct 300, increasing the flow rate of concentrated waste gas into the second hot gas delivery pipe 525 prevents excessive concentrated waste gas from entering the second heat exchanger 730, thereby achieving the beneficial effect of prioritizing the recovery and utilization of waste heat by the first heat exchanger 710.
[0032] Please refer again. Figure 1 The rotary device 10 also includes a chimney 900, and the clean gas pipeline 533 and the flue gas pipeline 300 are both connected to the chimney 900. It should be noted that using the same chimney 900 can, on the one hand, achieve unified emission management and simplify the design of the emission system; on the other hand, it can also save installation space, reduce the equipment footprint, and simplify installation and maintenance.
[0033] Please see Figure 4 To better adapt to the actual application of enterprise production, the number of rotor assembly 500 and heat exchange assembly 700 is at least two. Similar to the previous embodiment, each rotor assembly 500 is connected to the incinerator 100 through a corresponding heat exchange assembly 700, and each heat exchange assembly 700 is installed on the flue gas duct 300 to achieve the beneficial effect of recovering and reusing the heat of the gas after combustion in the incinerator 100.
[0034] Based on this, it can be explained that at least two rotor assemblies 500 are respectively connected in parallel in the rotor device 10 and operate independently to adapt to both large and small exhaust gas volumes. In addition, the two parallel rotor devices 10 can also be used as backup machines for each other in the initial stage, thereby effectively preventing system equipment downtime.
[0035] When the waste gas treatment volume is less than or equal to a preset value, the rotor device 10 is determined to be in the capacity ramp-up stage. At this time, one of the rotor components 500 and the corresponding heat exchange components 700 is selected for startup to meet the needs of the capacity ramp-up stage and small-volume waste gas treatment, thereby achieving the beneficial effect of more effectively improving the stability and safety of the rotor device 10 operation and reducing system instability caused by flow fluctuations. Figure 4 Taking two rotor components 500 and two heat exchange components 700 as an example, one of the two rotor components 500 is started, and the corresponding heat exchange component 700 is started accordingly.
[0036] Accordingly, when the waste gas treatment volume exceeds a preset value, the rotary device 10 is determined to be in full-capacity operation. At this time, all rotary components 500 and corresponding heat exchange components 700 are simultaneously activated to meet the large-volume waste gas treatment requirements, significantly increasing the treatment capacity of the rotary device 10 and ensuring efficient waste gas treatment even under high load conditions. Figure 4 Taking two rotor assemblies 500 and two heat exchange assemblies 700 as an example, the two rotor assemblies 500 are started simultaneously, and the corresponding heat exchange assemblies 700 are started accordingly.
[0037] It should also be noted that during the stage of large-volume waste gas treatment, the heat energy generated by the incinerator 100 will simultaneously heat four heat exchangers (two first heat exchangers 710 and two second heat exchangers 730), resulting in insufficient heat energy. Therefore, considering the priority of desorption treatment, the control valve 5261 is opened to increase the volume of concentrated waste gas entering the second hot gas delivery pipeline 525 directly through the second bypass pipeline 526, preventing excessive concentrated waste gas from entering the second heat exchanger 730. This ensures that the heat in the flue gas duct 300 is fully exchanged with the first heat exchanger 710, thereby meeting the high-temperature desorption requirements.
[0038] Additionally, it should be noted that, as Figure 4 As shown, the second hot gas delivery pipes 525 in the two rotor assemblies 500 can be connected to each other, thereby introducing the mixed waste gas into the incinerator 100. Furthermore, gas concentration monitoring instruments can be installed in the two connected second hot gas delivery pipes 525 to ensure that the waste gas concentration in the incinerator 100 is maintained at the lower explosive limit of 25%, thus ensuring the safe operation of the system. Temperature detection instruments can also be installed in the two separate first hot gas delivery pipes 523 to ensure that the temperature of the hot gas entering the desorption zone 515 of the rotor 510 remains within a constant range. It should be noted that the above monitoring instruments are all configured in a conventional manner to ensure that the temperature and concentration of the device are within the safe operating range.
[0039] Taking two rotating wheel assemblies 500 as an example, the working principle and process of the rotating wheel device 10 provided in this application are as follows:
[0040] When the waste gas treatment capacity is less than or equal to a preset value, i.e., when the rotary device 10 is in the capacity ramp-up phase, a rotary assembly 500 and its corresponding heat exchange assembly 700 are selected for operation. At this time, the waste gas supplied by the waste gas inlet pipe 531, during its passage through the adsorption zone 511, has its VOCs adsorbed by the adsorption zone 511, thus transforming it into clean gas, which is then discharged through the clean gas pipe 533 and the chimney 900. Cooling air supplied by the cooling air inlet pipe 521 passes through the cooling zone 513, lowering the rotary wheel 510. Subsequently, the cooling air is heated by the first heat exchanger 710, transforming into desorption hot air. The desorption hot air passes through the adsorption zone 511, removing the organic compounds from the adsorption zone 511. During this process, the originally clean desorption hot air absorbs and carries away the desorbed organic compounds, transforming from clean air into concentrated waste gas containing organic compounds. Subsequently, the concentrated waste gas is further preheated by the second heat exchanger 730 and then sent to the incinerator 100 for high-temperature incineration. In the above process, the heat energy of the incinerator 100 is transferred to the desorption zone 515 of the rotor 510 through the airflow in the flue gas duct 300, heat exchange assembly 700, and rotor assembly 500 for recovery and reuse.
[0041] When the waste gas treatment volume exceeds the preset value and the rotary device 10 is operating at full capacity, both rotary wheel assemblies 500 and their corresponding heat exchange assemblies 700 operate simultaneously. It is easy to understand that the operation mode of the two rotary wheel assemblies 500 and their corresponding heat exchange assemblies 700 is the same as that during the capacity ramp-up phase described above. The difference lies in that the control valve 5261 on the second bypass pipe 526 is opened, increasing the airflow of concentrated waste gas into the second hot gas delivery pipe 525 and decreasing the airflow of concentrated waste gas entering the second heat exchanger 730. This achieves the beneficial effect of prioritizing the recovery and utilization of waste heat in the first heat exchanger 710.
[0042] In summary, this utility model provides a rotary device 10, including an incinerator 100, a flue gas duct 300, a rotary assembly 500, and a heat exchange assembly 700. The flue gas duct 300 is connected to the outlet of the incinerator 100 and is used to discharge the high-temperature gas generated by the incinerator 100 to the outside. The heat exchange assembly 700 is disposed on the flue gas duct 300 and is used to capture the heat energy carried by the high-temperature gas in the flue gas duct 300, thereby heating the gas entering the rotary assembly 500. Based on the above, the rotary assembly 500 includes a rotary wheel 510, a cooling gas inlet pipe 521, a cooling gas delivery pipe 522, a first hot gas delivery pipe 523, and a concentrated waste gas pipe 524. The rotary wheel 510 is provided with a cooling zone 513 and a desorption zone 515. During the operation of the rotary device 10, the thermal energy of the incinerator 100 is transferred to the desorption zone 515 of the rotary wheel 510 via the airflow passing through the flue gas duct 300, heat exchange assembly 700, and rotary wheel assembly 500, thereby increasing efficiency through heating. Based on this, the rotary device 10 provided in this application can recover and reuse the heat of the gas after combustion in the incinerator 100, saving energy consumption, reducing operating costs, and protecting the environment.
[0043] In addition, this application also provides a waste gas treatment system, which includes the rotary device 10 in the aforementioned embodiments, capable of recovering and reusing the heat of the gas after combustion in the incinerator 100, saving energy consumption, and achieving the beneficial effects of reducing operating costs and protecting the environment. Furthermore, the waste gas treatment system may also include a pre-filtration device, thereby pre-treating the waste gas before introducing it into the rotary device 10.
[0044] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A rotary device, characterized in that, include: Incinerator (100); A flue gas duct (300) is connected to the outlet of the incinerator (100); A rotor assembly (500) includes a rotor (510), a cooling gas inlet pipe (521), a cooling gas delivery pipe (522), a first hot gas delivery pipe (523), and a concentrated waste gas pipe (524); wherein the rotor (510) is provided with a cooling zone (513) and a desorption zone (515), and the two opposite sides of the cooling zone (513) are respectively connected to the cooling gas inlet pipe (521) and the cooling gas delivery pipe (522), and the two opposite sides of the desorption zone (515) are respectively connected to the first hot gas delivery pipe (523) and the concentrated waste gas pipe (524); A heat exchange assembly (700) is disposed on the flue gas duct (300) and includes a first heat exchanger (710) and a second heat exchanger (730); wherein the inlet and outlet of the first heat exchanger (710) are respectively connected to the cooling gas conveying pipeline (522) and the first hot gas conveying pipeline (523), and the inlet and outlet of the second heat exchanger (730) are respectively connected to the concentrated waste gas pipeline (524) and the inlet of the incinerator (100).
2. The rotary device according to claim 1, characterized in that, The rotor assembly (500) further includes a second hot gas delivery pipeline (525) and a second bypass pipeline (526), wherein the second hot gas delivery pipeline (525) is connected to the outlet of the second heat exchanger (730) and the inlet of the incinerator (100), and the second bypass pipeline (526) is connected to the second hot gas delivery pipeline (525) and the concentrated waste gas pipeline (524).
3. The rotary device according to claim 2, characterized in that, The impeller assembly (500) further includes a control valve (5261) disposed on the second bypass pipe (526) for regulating the air volume entering the second hot gas delivery pipe (525) via the second bypass pipe (526).
4. The rotary device according to claim 1, characterized in that, The rotor assembly (500) further includes an exhaust gas inlet pipe (531) and a clean gas pipe (533). The rotor (510) further includes an adsorption zone (511), and the two opposite sides of the adsorption zone (511) are respectively connected to the exhaust gas inlet pipe (531) and the clean gas pipe (533).
5. The rotary device according to claim 4, characterized in that, The rotor assembly (500) further includes an adsorption fan (5331), which is disposed on the purified gas pipeline (533) and is used to adjust the gas flow rate in the purified gas pipeline (533); the rotor assembly (500) further includes a desorption fan (5241), which is disposed on the concentrated waste gas pipeline (524) and is used to adjust the gas flow rate in the concentrated waste gas pipeline (524).
6. The rotary device according to claim 4, characterized in that, The rotary device (10) also includes a chimney (900), and the clean gas pipeline (533) and the flue gas pipeline (300) are both connected to the chimney (900).
7. The rotary device according to any one of claims 1 to 6, characterized in that, The number of the rotor assembly (500) and the heat exchange assembly (700) is at least two, and each rotor assembly (500) is connected to the incinerator (100) through the corresponding heat exchange assembly (700), and each heat exchange assembly (700) is disposed on the flue gas duct (300).
8. The rotary device according to claim 7, characterized in that, If the amount of exhaust gas to be treated is less than or equal to a preset value, the impeller assembly (500) and the corresponding heat exchange assembly (700) shall be started in one of the following ways:
9. The rotary device according to claim 7, characterized in that, If the amount of exhaust gas to be treated exceeds the preset value, all the rotor assemblies (500) and the corresponding heat exchange assemblies (700) are started simultaneously.
10. A waste gas treatment system, characterized in that, Includes the rotary device as described in any one of claims 1 to 9.