Composite multi-chamber RTO waste gas treatment equipment with ultrahigh purification rate

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to ultrahigh-purification-rate combined type multi-chamber RTO waste gas treatment equipment which comprises a purification tower body, a plurality of heat storage chambers are arranged at the lower end in the purification tower body, an integral combustion chamber is arranged above the heat storage chambers, and an air inlet is formed in the purification tower body. And the combustion chamber is communicated with each heat storage chamber through a gas channel. A vertically-distributed middle partition plate is arranged in the middle of the interior of the combustion chamber, turbulent flow baffles are arranged at the upper ends and the lower ends of the two sides of the middle partition plate, a center flow guide ring penetrates through the middle of the middle partition plate, and the center flow guide ring and the multiple turbulent flow baffles jointly form a multi-stage baffling mixing mechanism in the combustion chamber. The ultrahigh-purification-rate combined type multi-chamber RTO waste gas treatment equipment improves the waste gas treatment efficiency and the heat energy utilization rate, and has the advantages of being high in purification rate, stable in operation and low in energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a high-purity composite multi-chamber RTO waste gas treatment device. Background Technology

[0002] With the continuous development of industrial production, the emission of volatile organic compounds (VOCs) has attracted increasing attention. Regenerative Thermal Oxidizers (RTO), as a highly efficient waste gas treatment device, are widely used in industries such as chemical, coating, and printing. Its basic principle is to oxidize and decompose organic pollutants in waste gas into carbon dioxide and water through high temperatures, while simultaneously recovering heat using heat storage materials, achieving the dual goals of energy conservation and environmental protection. Currently, common RTO equipment includes two-chamber, three-chamber, and multi-chamber structures, capable of meeting the waste gas treatment needs under different operating conditions.

[0003] Existing multi-chamber RTO equipment still suffers from limited purification efficiency during actual operation, especially when treating high-concentration, complex organic waste gas. Due to factors such as uneven airflow distribution, insufficient residence time, or low thermal energy utilization in the combustion chamber, the waste gas cannot be fully oxidized and decomposed, affecting the overall purification effect. Furthermore, due to the relatively simple internal structure of the combustion chamber and the lack of effective flow guidance and mixing design, it is difficult to achieve uniform mixing and complete combustion of waste gas and air, which can easily lead to secondary pollution risks and energy waste. Utility Model Content

[0004] The purpose of this invention is to provide a high-purity composite multi-chamber RTO waste gas treatment device to solve the problems of low waste gas treatment efficiency, uneven airflow distribution, incomplete combustion, and high energy consumption of current multi-chamber RTO equipment mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-purity composite multi-chamber RTO waste gas treatment device, comprising a purification tower body, with multiple heat storage chambers located at the lower end of the purification tower body, and an integral combustion chamber located above the heat storage chambers. The combustion chamber and each heat storage chamber are connected via gas channels. A vertically distributed baffle plate is located in the center of the combustion chamber, with baffles at both the upper and lower ends of both sides of the baffle plate. A central guide ring passes through the center of the baffle plate. The central guide ring and the multiple baffles together form a multi-stage baffle mixing mechanism inside the combustion chamber.

[0006] Preferably, the baffle plate has a rectangular opening, and the rectangular opening on the baffle plate has a cross grid structure composed of multiple transverse guide strips and longitudinal guide strips, wherein the transverse guide strips and longitudinal guide strips are arranged perpendicularly to each other.

[0007] Preferably, the interior of the central guide ring is provided with a plurality of radial structures composed of radial guide vanes and annular deflectors. The radial guide vanes are evenly distributed along the circumference of the central guide ring, and annular deflectors are connected between adjacent radial guide vanes.

[0008] Preferably, each of the heat storage chambers is provided with a central guide column inside, and the surface of the central guide column is provided with a swirling flow guide groove.

[0009] Preferably, the inner end of the baffle is provided with a baffle on both the front and rear sides, and the baffle extends vertically along the edge of the baffle to form an airflow wrapping flow path.

[0010] Preferably, the turbulence baffle is inclined relative to the central axis of the combustion chamber, with an inclination angle of 30°-60°.

[0011] Compared with existing technologies, the beneficial effects of this utility model are: this ultra-high purification rate composite multi-chamber RTO waste gas treatment equipment improves waste gas treatment efficiency and thermal energy utilization, and has the advantages of high purification rate, stable operation, and low energy consumption. Through the combined design of the central baffle and the central guide ring, the equipment achieves uniform airflow distribution and efficient flow guidance. The multi-stage baffle mixing path formed by the turbulence baffle enhances airflow turbulence, extends the waste gas residence time, and allows the waste gas to be fully oxidized and decomposed in the high-temperature zone. At the same time, the rational layout of the heat storage chamber and gas channel further improves the heat recovery efficiency and effectively reduces the equipment's operating energy consumption. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a composite multi-chamber RTO waste gas treatment device with ultra-high purification rate according to this utility model;

[0013] Figure 2 This is a schematic diagram of the connection structure between the baffle and the partition plate of a composite multi-chamber RTO waste gas treatment device with ultra-high purification rate according to this utility model.

[0014] Figure 3 This is a schematic diagram of the internal structure of the central guide ring of a composite multi-chamber RTO waste gas treatment device with ultra-high purification rate according to this utility model.

[0015] In the diagram: 1. Purification tower body; 2. Heat storage chamber; 3. Gas passage; 4. Combustion chamber; 5. Middle partition; 6. Baffle; 601. Horizontal guide bar; 602. Longitudinal guide bar; 7. Central guide ring; 701. Radial guide vane; 702. Annular baffle; 8. Central guide column. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3This utility model provides a technical solution: a high-purity composite multi-chamber RTO waste gas treatment device, including a purification tower body 1. The upper and lower ends of the purification tower body 1 are respectively provided with a waste gas inlet and a purified gas outlet for inputting waste gas and discharging purified gas. Multiple heat storage chambers 2 are located at the lower end of the purification tower body 1. An integral combustion chamber 4 is located above the heat storage chambers 2. The combustion chamber 4 and each heat storage chamber 2 are connected by a gas channel 3. A vertically distributed partition plate 5 is located in the middle of the combustion chamber 4. Baffles 6 are located at the upper and lower ends of both sides of the partition plate 5, and a central guide ring 7 passes through the middle of the partition plate 5. The central guide ring 7 and multiple heat storage chambers 2... The baffles 6 together form a multi-stage baffle mixing mechanism inside the combustion chamber 4. In this structure, the exhaust gas first enters multiple heat storage chambers 2 at the lower end of the purification tower 1. Under the action of the heat storage material, preliminary heat recovery and temperature increase are achieved. Then, it is evenly introduced into the combustion chamber 4 through the gas channel 3. During this process, the baffle 5 is vertically installed in the middle of the combustion chamber 4, symmetrically dividing the airflow space, causing the exhaust gas entering the combustion chamber 4 to flow in zones. The central guide ring 7 is installed through the middle of the baffle 5, guiding the mainstream airflow to diffuse evenly along its circumference, preventing concentrated airflow from impacting a certain area. Simultaneously, the baffles 6 are respectively installed at the upper and lower ends on both sides of the baffle 5, interacting with the central baffle 5. The core guide ring 7 forms a synergistic effect, creating a multi-stage deflection mixing path as the airflow passes through, effectively breaking the laminar flow state, enhancing turbulence, and extending the residence time of exhaust gas in the combustion chamber 4, allowing the exhaust gas to be fully oxidized and decomposed under high temperature conditions. This structure achieves a more uniform airflow distribution, a more efficient mixing effect, and a higher thermal energy utilization rate, thereby solving the problems of low purification efficiency, high energy consumption, and secondary pollution caused by uneven airflow distribution, insufficient mixing, and short residence time in the combustion chamber in existing technologies. The turbulence baffle 6 is provided with a rectangular opening, and the rectangular opening on the turbulence baffle 6 is provided with an intersection composed of multiple transverse guide strips 601 and longitudinal guide strips 602. The cross-grid structure features transverse guide strips 601 and longitudinal guide strips 602 arranged perpendicularly and alternately. In this structure, as the exhaust gas flows through the rectangular opening of the baffle 6 within the combustion chamber 4, the cross-grid structure of the transverse and longitudinal guide strips 601 and 602 cuts and disperses the airflow in multiple directions, creating localized vortices and stronger turbulence as the airflow passes through the baffle 6. This further enhances the mixing uniformity of the exhaust gas and its contact efficiency with oxygen. Simultaneously, this cross-grid structure effectively increases the airflow path length while maintaining a good airflow channel, extending the residence time of the exhaust gas in the combustion chamber 4, thereby improving overall purification efficiency and thermal energy utilization. The central guide ring 7 contains multiple radial structures composed of radial guide vanes 701 and annular baffles 702. The radial guide vanes 701 are evenly distributed along the circumference of the central guide ring 7, and adjacent radial guide vanes 701 are connected by annular baffles 702.This structure can guide and divert the mainstream airflow entering the central area of ​​combustion chamber 4 in multiple directions, causing the airflow to diffuse radially along the direction of the guide vanes, effectively improving the uniformity of airflow distribution. Simultaneously, the annular baffle 702 forms a local vortex zone between adjacent radial guide vanes 701, enhancing the turbulence and mixing between airflows, further promoting sufficient contact and uniform mixing of exhaust gas and oxygen. This structure, by optimizing the airflow organization in the central area, extends the residence time of exhaust gas in the high-temperature zone, also improving oxidation decomposition efficiency. Each heat storage chamber 2 is equipped with a central guide column 8, and the surface of the central guide column 8 is provided with swirling guide grooves. After the exhaust gas enters the heat storage chamber 2, it is affected by the swirling guide grooves on the surface of the central guide column 8, forming a rotating and rising airflow pattern, allowing the exhaust gas to achieve preliminary uniform distribution and preheating before passing through the heat storage material. The flow channel enhances the contact efficiency between the airflow and the heat storage material, improving heat exchange while avoiding local airflow short-circuiting or dead zones. This further improves the heat recovery efficiency and stability of the heat storage chamber 2. The inner end of the baffle 6 has baffles on both the front and rear sides, extending vertically along its edge to form an enveloping flow path. This structure effectively guides and surrounds the airflow as it passes through the baffle 6, creating a partially closed flow path. This enhances the retention and mixing intensity of the airflow within the combustion chamber 4. The baffle 6 is inclined relative to the central axis of the combustion chamber 4 at an angle of 30°-60°. This structure allows the airflow to flow along the inclined direction after entering the combustion zone, further breaking the laminar flow state, increasing turbulence and distribution uniformity, and further extending the residence time of the exhaust gas in the high-temperature zone.

[0018] Working Principle: When using this ultra-high purification rate composite multi-chamber RTO waste gas treatment equipment, the waste gas first enters multiple heat storage chambers 2 at the lower end of the purification tower 1. Under the action of the heat storage material, preliminary heat recovery and heating are carried out. Then, it is introduced into the combustion chamber 4 through the gas channel 3. After entering the combustion chamber 4, the waste gas is separated by the partition plate 5 and flows to the two sides of the combustion chamber 4. It is also evenly diffused along the circumference of the central guide ring 7. The mainstream airflow entering the central area of ​​the combustion chamber 4 is guided and diverted in multiple directions by the radial structure composed of radial guide plates 701 and annular baffle plates 702 inside the central guide ring 7, so that the airflow diffuses radially. At the same time, the airflow passes through the turbulence baffle 6 and the rectangular opening on the turbulence baffle 6. The cross grid structure composed of transverse guide strips 601 and longitudinal guide strips 602 cuts and disperses the airflow in multiple directions, so that the airflow forms local vortices and stronger turbulence effects when passing through, further enhancing the mixing uniformity. Finally, the waste gas completes full oxidation and decomposition in a high-temperature environment, thus completing a series of processes.

[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-purity composite multi-chamber RTO waste gas treatment device, comprising a purification tower body (1), wherein a plurality of heat storage chambers (2) are provided at the lower end of the purification tower body (1), and an integral combustion chamber (4) is provided above the heat storage chambers (2), wherein the combustion chamber (4) and each heat storage chamber (2) are connected by a gas channel (3), characterized in that: The combustion chamber (4) has a vertically distributed partition plate (5) in the middle. Both the upper and lower ends of the partition plate (5) are provided with baffles (6). A central guide ring (7) runs through the middle of the partition plate (5). The central guide ring (7) and multiple baffles (6) together form a multi-stage flow deflection and mixing mechanism inside the combustion chamber (4).

2. The ultra-high purification rate composite multi-chamber RTO waste gas treatment equipment according to claim 1, characterized in that: The baffle (6) has a rectangular opening, and the rectangular opening of the baffle (6) has a cross grid structure composed of multiple transverse guide strips (601) and longitudinal guide strips (602), and the transverse guide strips (601) and longitudinal guide strips (602) are arranged perpendicularly to each other.

3. The ultra-high purification rate composite multi-chamber RTO waste gas treatment equipment according to claim 1, characterized in that: The interior of the central guide ring (7) is provided with a plurality of radial structures consisting of radial guide vanes (701) and annular baffles (702). The radial guide vanes (701) are evenly distributed along the circumference of the central guide ring (7), and annular baffles (702) are connected between adjacent radial guide vanes (701).

4. The ultra-high purification rate composite multi-chamber RTO waste gas treatment equipment according to claim 1, characterized in that: Each heat storage chamber (2) is equipped with a central guide column (8), and the surface of the central guide column (8) is provided with a swirling flow guide groove.

5. The ultra-high purification rate composite multi-chamber RTO waste gas treatment equipment according to claim 1, characterized in that: The inner end of the baffle (6) is provided with baffles on both the front and rear sides, and the baffles extend vertically along the edge of the baffle (6) to form an airflow wrapping flow path.

6. The ultra-high purification rate composite multi-chamber RTO waste gas treatment equipment according to claim 1, characterized in that: The turbulence baffle (6) is inclined relative to the central axis of the combustion chamber (4) at an angle of 30°-60°.

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