Waste gas treatment device

Abstract

The utility model provides a waste gas treatment device which comprises a zeolite rotating wheel, a heat exchanger, an oxidizing furnace, a fan and a proportioning valve, a first pipeline and a second pipeline which are connected in parallel are arranged between the zeolite rotating wheel and the heat exchanger, the first pipeline is used for introducing adsorbed gas into the heat exchanger, and the second pipeline is used for introducing the adsorbed gas into the heat exchanger. The second pipeline is used for introducing the gas into a zeolite rotating wheel for desorption; the heat exchanger is connected with the oxidizing furnace through a third pipeline, the third pipeline and the zeolite rotating wheel are further connected with a fourth pipeline, the proportioning valve and the fan are arranged on the third pipeline, the proportioning valve is located on the side close to the heat exchanger, the outlet end of the fan faces one side of the oxidizing furnace, and the outlet end of the fan faces the other side of the oxidizing furnace. And the communication point of the fourth pipeline and the third pipeline is positioned between the proportioning valve and the fan. Through the arrangement, the structure is simple, and the working temperature of the zeolite rotating wheel can be effectively adjusted.

Description

Technical Field

[0001] The utility model relates to the field of waste gas treatment, in particular to a waste gas treatment device. Background Art

[0002] As an efficient and environmentally friendly waste gas treatment technology, the zeolite rotor plays a vital role in numerous industrial and commercial sectors. Its applications encompass industrial waste gas treatment, air purification, volatile organic compound (VOC) treatment, and air purification in specialized locations. Taking VOC treatment as an example, the specific process is as follows: VOC-containing waste gas enters the zeolite rotor, where the vast majority of the VOCs are adsorbed by the zeolite on the rotor, significantly reducing the VOC content and resulting in cleaner gas that meets emission standards. The waste gas, after adsorption by the rotor and subsequent high-temperature desorption, becomes a highly concentrated VOC gas. This concentration significantly reduces the volume of the waste gas, thereby reducing the operating costs of subsequent treatment procedures.

[0003] In the above process, a heat exchanger is required to supply heat to the zeolite rotor, and a separate fan is usually used for heat supply. However, this method is not suitable for situations where the heat demand is small and the heat source temperature is high.

[0004] Therefore, it is necessary to design an exhaust gas treatment device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the deficiencies of the prior art and to provide an exhaust gas treatment device which has a simple structure and can effectively control the working temperature of a zeolite runner.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a waste gas treatment device, which includes a zeolite rotor, a heat exchanger, an oxidation furnace, a fan and a proportional control valve, a first pipeline and a second pipeline in parallel are provided between the zeolite rotor and the heat exchanger, the first pipeline is used to pass the adsorbed gas into the heat exchanger, and the second pipeline is used to pass the gas into the zeolite rotor for desorption; the heat exchanger and the oxidation furnace are connected by a third pipeline, and the third pipeline and the zeolite rotor are also connected by a fourth pipeline, the proportional control valve and the fan are arranged on the third pipeline, the proportional control valve is located on the side adjacent to the heat exchanger, the outlet end of the fan faces the side of the oxidation furnace, and the connection point between the fourth pipeline and the third pipeline is located between the proportional control valve and the fan.

[0007] As a further improved technical solution of the present invention, a fifth pipeline is further provided at the front end of the zeolite runner, and the fifth pipeline is used to pass the exhaust gas into the zeolite runner. The fifth pipeline is provided with a filter for filtering and removing impurities from the exhaust gas.

[0008] As a further improved technical solution of the present invention, the heat exchanger includes a first inlet, a first outlet, a second inlet and a second outlet, the first inlet is a high-temperature gas inlet, the first outlet is connected to the third pipeline, the second inlet is connected to the first pipeline, and the second outlet is connected to the second pipeline.

[0009] As a further improved technical solution of the present invention, the temperature of the high-temperature gas is 650-800°C, and the operating temperature of the desorption zone in the zeolite wheel is 160-230°C.

[0010] As a further improved technical solution of the present invention, the proportional control valve is a pneumatic proportional control valve.

[0011] As a further improved technical solution of the present invention, a thermocouple is provided on the second pipeline.

[0012] As a further improved technical solution of the present invention, the heat exchanger is a coil heat exchanger or a shell and tube heat exchanger.

[0013] As a further improved technical solution of the present invention, the zeolite rotor includes a rotor having an adsorption zone, a desorption zone, a cooling zone, and a motor for driving the rotor to rotate.

[0014] It can be seen from the above technical solution that the exhaust gas treatment device of the present invention sets a proportional control valve and a fan at the heat exchange medium outlet end of the heat exchanger, utilizes the negative pressure of the fan inlet to allow the heat exchange medium to pass through the heat exchanger smoothly, and adjusts the air intake size of the heat exchange medium through the proportional control valve, thereby accurately controlling the desorption temperature of the zeolite wheel, which not only avoids energy waste caused by excessively high temperature, but also prevents the problem of desorption efficiency being affected by excessively low temperature; in addition, precise temperature control not only ensures the high working efficiency of the zeolite wheel, but also greatly extends its service life.

[0015] Through the above technical solutions, the utility model effectively solves the problems of low efficiency and high energy consumption in traditional waste gas treatment, and realizes high efficiency and energy saving in waste gas treatment, which not only helps to reduce the operating costs of enterprises, but also makes a positive contribution to environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of an exhaust gas treatment device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Please refer to Figure 1As shown, the utility model provides an exhaust gas treatment device, which includes a zeolite rotor 1, a heat exchanger 2, an oxidation furnace 5, a fan 4 and a proportional control valve 3. A first pipeline 11 and a second pipeline 12 are provided in parallel between the zeolite rotor 1 and the heat exchanger 2. The heat exchanger 2 and the oxidation furnace 5 are connected by a third pipeline 13. The third pipeline 13 and the zeolite rotor 1 are also connected by a fourth pipeline 14.

[0019] The zeolite rotor 1 is used to adsorb and desorb exhaust gas to concentrate it. It comprises a rotor with adsorption, desorption, and cooling zones, and a motor that drives the rotor. A fifth conduit 15 is located at the front end of the zeolite rotor 1. This conduit is used to pass exhaust gas into the zeolite rotor 1 and is equipped with a filter 6 to filter and remove impurities from the exhaust gas.

[0020] The heat exchanger 2 is used for heat exchange. The heat exchanger of the present invention is preferably a coil heat exchanger or a shell-and-tube heat exchanger. The first pipeline 11 is used to pass the gas after adsorption into the heat exchanger 2, and the second pipeline 12 is used to pass the gas after adsorption treatment and heat exchange into the zeolite rotor 1 for desorption. Specifically, the heat exchanger 2 includes a first inlet 21, a first outlet 22, a second inlet 23 and a second outlet 24. The first inlet 21 is the inlet of high-temperature gas (heat exchange medium), the first outlet 22 is the outlet of the heat exchange medium, the first outlet 22 is connected to the third pipeline 13, the second inlet 22 is connected to the first pipeline 11, and the second outlet 24 is connected to the second pipeline 12. In this embodiment, high-temperature gas is used as the heat exchange medium of the heat exchanger. The temperature of the high-temperature gas is 650-800°C, which is used to provide heat to the gas after adsorption treatment. A thermocouple is also provided on the second pipeline 12 to monitor the temperature of the gas after heat exchange.

[0021] The proportional control valve 3 and fan 4 are installed on the third pipeline 13. The proportional control valve 3 is located on the side adjacent to the heat exchanger 2. The proportional control valve 3 is preferably a pneumatic proportional control valve. The outlet of the fan 4 faces the oxidation furnace 5. The connection point between the fourth pipeline 14 and the third pipeline 13 is located between the proportional control valve 3 and the fan 4. The arrangement of the proportional control valve 3 and the fan 4 allows the system to adjust the high-temperature airflow according to actual needs, thereby maintaining the operating temperature of the desorption zone of the zeolite rotor 1 at 160-230°C.

[0022] Terms such as "front" and "back" used herein to denote relative spatial positions are used for ease of explanation to describe the relationship of one feature relative to another feature as shown in the accompanying drawings. It should be understood that, depending on the placement of the product, these terms may be intended to encompass different orientations besides those shown in the drawings and should not be construed as limitations on the claims.

[0023] In addition, the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in this field should understand that technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the scope of the claims of the present invention.

Claims

1. An exhaust gas treatment device, characterized in that: The invention comprises a zeolite rotor, a heat exchanger, an oxidation furnace, a blower and a pneumatic proportional control valve. A first pipeline and a second pipeline connected in parallel are provided between the zeolite rotor and the heat exchanger. The first pipeline is used to pass the adsorbed gas into the heat exchanger, and the second pipeline is used to pass the gas into the zeolite rotor for desorption. The heat exchanger and the oxidation furnace are connected by a third pipeline. The third pipeline and the zeolite rotor are also connected by a fourth pipeline. The pneumatic proportional control valve and the blower are provided on the third pipeline. The pneumatic proportional control valve is located on the side adjacent to the heat exchanger, the outlet end of the fan is facing the side of the oxidation furnace, and the connection point between the fourth pipeline and the third pipeline is located between the pneumatic proportional control valve and the fan; a fifth pipeline is also provided at the front end of the zeolite rotor, and the fifth pipeline is used to pass the exhaust gas into the zeolite rotor. The fifth pipeline is provided with a filter for filtering and removing impurities from the exhaust gas; a thermocouple is provided on the second pipeline, and the operating temperature of the desorption zone in the zeolite rotor is 160-230°C.

2. The exhaust gas treatment device according to claim 1, characterized in that: The heat exchanger includes a first inlet, a first outlet, a second inlet and a second outlet. The first inlet is a high-temperature gas inlet. The first outlet is connected to the third pipeline. The second inlet is connected to the first pipeline. The second outlet is connected to the second pipeline.

3. The exhaust gas treatment device according to claim 2, characterized in that: The temperature of the high-temperature gas is 650-800°C.

4. The exhaust gas treatment device according to claim 1, wherein: The heat exchanger is a coil heat exchanger or a shell and tube heat exchanger.

5. The exhaust gas treatment device according to claim 1, wherein: The zeolite rotor comprises a rotor with an adsorption zone, a desorption zone, a cooling zone, and a motor for driving the rotor to rotate.

Images