Waste gas separation catalytic conversion coupling rotating wheel equipment

Abstract

The utility model discloses waste gas separation catalytic conversion coupling rotating wheel equipment which is composed of a pretreatment device and a waste gas separation catalytic rotating wheel, and the pretreatment device is composed of a pretreatment gas inlet, a filtering area, a water removal area and a pretreatment gas outlet; the waste gas separation catalytic rotating wheel is composed of a rotating wheel shell, a motor, an adsorption separation area, a catalytic conversion area, a heat recovery area and a cooling standby area, the four areas jointly form a circular wheel face, the base of the wheel face is a honeycomb-shaped silicon-aluminum molecular sieve, and the surface of the wheel face is coated with an adsorption and catalysis bifunctional material. The equipment couples the functions of waste gas pretreatment, adsorption separation, catalytic conversion and the like, and the integrated equipment has the advantages of being compact, convenient to transport, load and unload, low in cost, easy and convenient to operate, high in applicability and the like.

Description

Technical Field

[0001] This utility model belongs to the technical field of air pollution control equipment, specifically relating to a waste gas separation catalytic conversion coupled rotor device. Background Technology

[0002] Industrial waste gas is generally a mixture of air and harmful gases, with a complex composition. Besides nitrogen, oxygen, and water vapor, it also contains dust, various harmful gases, and greenhouse gases such as CO2. Waste gas treatment processes include physical methods such as filtration, absorption, and adsorption; chemical methods such as oxidation-reduction, acid-base neutralization, and catalytic conversion; biological methods; and combinations of these methods. Different components often require different optimal treatment methods. For example, the optimal method for desulfurization is generally absorption, the optimal method for denitrification is catalytic reduction, while VOCs and CO2 require combined process equipment for treatment.

[0003] Combination processes offer advantages such as diverse solutions and flexible adjustments, but they also inevitably lead to problems such as large equipment size, high investment and operating costs, and complex maintenance. Integrated equipment that couples several functions can solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a waste gas separation catalytic conversion coupled rotor device to solve the problems of large equipment size, high investment and operating costs, and complex maintenance in existing combined processes.

[0005] To overcome the shortcomings of existing technologies, this utility model provides a waste gas separation and catalytic conversion coupled rotor device, the specific technical solution of which is as follows:

[0006] A waste gas separation catalytic conversion coupled rotor device is composed of a pretreatment device (A) and a waste gas separation catalytic rotor (B). The pretreatment device (A) is composed of a pretreatment inlet (11), a filtration zone (12), a water removal zone (13), and a pretreatment outlet (14). The waste gas separation catalytic rotor (B) is composed of a rotor housing (2), a motor (3), an adsorption separation zone (4), a catalytic conversion zone (5), a heat recovery zone (6), and a cooling standby zone (7). The adsorption separation zone (4), the catalytic conversion zone (5), the heat recovery zone (6), and the cooling standby zone (7) together form a circular wheel surface. The base of the wheel surface is a honeycomb silicon-aluminum molecular sieve, and the surface is coated with an adsorption-catalytic dual-function material.

[0007] The pretreatment device (A) consists of two sets used in parallel and alternately. The filter material used in the filtration zone (12) of each set is polytetrafluoroethylene double-coated glass fiber fabric, and the adsorbent used in the water removal zone (13) is modified silica gel composite material.

[0008] The wheel housing (2) consists of a metal shell (21) and a sealing ring (22). The sealing ring (22) has a brush structure and is coated with lubricating oil, which provides a good sealing effect and reduces frictional resistance.

[0009] The speed range of the motor (3) is 1-20 r / h.

[0010] The adsorption separation zone (4) consists of an adsorption zone wheel surface (41), an exhaust gas inlet (42), and a tail gas outlet (43).

[0011] The catalytic conversion zone (5) consists of a catalytic zone wheel surface (51), a serpentine heater (52), a reaction gas inlet (53), and a product gas outlet (54).

[0012] The heat recovery zone (6) consists of a heat exchange zone wheel surface (61), a serpentine heat exchanger (62), a preheated exhaust gas inlet (63), and a preheated exhaust gas outlet (64).

[0013] The beneficial effects of this utility model are: compared with combined process equipment that is large, has high investment and operating costs and is complex to maintain, this equipment couples functions such as waste gas pretreatment, adsorption separation and catalytic conversion. The integrated equipment has the advantages of compact equipment, easy transportation and loading and unloading, low cost, simple operation and strong applicability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a waste gas separation catalytic conversion coupled rotor device according to the present invention.

[0015] Among them: (A) - pretreatment device; (11) - pretreatment air inlet; (12) - filtration zone; (13) - water removal zone; (14) - pretreatment air outlet; (B) - waste gas separation catalytic rotor; (2) - rotor shell; (21) - metal shell; (22) - sealing ring; (3) - motor; (4) - adsorption separation zone; (41) - adsorption zone wheel surface; (42) - waste gas inlet; (43) - tail gas outlet; (5) - catalytic conversion zone; (51) - catalytic zone wheel surface; (52) - serpentine heater; (53) - reaction gas inlet; (54) - product gas outlet; (6) - heat recovery zone; (61) - heat exchange zone wheel surface; (62) - serpentine heat exchanger; (63) - waste gas inlet to be preheated; (64) - waste gas outlet after preheating; (7) - cooling standby zone. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to specific embodiments, but the present invention is not limited to the following specific embodiments.

[0017] Example 1

[0018] like Figure 1 As shown, a multifunctional dust filtration, absorption, adsorption, and catalysis device is composed of a pretreatment device (A) and a waste gas separation catalytic rotor (B). The pretreatment device (A) is composed of a pretreatment inlet (11), a filtration zone (12), a water removal zone (13), and a pretreatment outlet (14). The waste gas separation catalytic rotor (B) is composed of a rotor housing (2), a motor (3), an adsorption separation zone (4), a catalytic conversion zone (5), a heat recovery zone (6), and a cooling and standby zone (7). The adsorption separation zone (4), the catalytic conversion zone (5), the heat recovery zone (6), and the cooling and standby zone (7) together form a circular wheel surface. The base of the wheel surface is a honeycomb silicon-aluminum molecular sieve, and the surface is coated with an adsorption-catalytic dual-function material.

[0019] The pretreatment device (A) consists of two sets used in parallel and alternately. The filter material used in the filtration zone (12) of each set is polytetrafluoroethylene double-coated glass fiber fabric, and the adsorbent used in the water removal zone (13) is modified silica gel composite material.

[0020] The wheel housing (2) consists of a metal shell (21) and a sealing ring (22). The sealing ring (22) has a brush structure and is coated with lubricating oil, which provides a good sealing effect and reduces frictional resistance.

[0021] The speed range of the motor (3) is 1-20 r / h.

[0022] The adsorption separation zone (4) consists of an adsorption zone wheel surface (41), an exhaust gas inlet (42), and a tail gas outlet (43).

[0023] The catalytic conversion zone (5) consists of a catalytic zone wheel surface (51), a serpentine heater (52), a reaction gas inlet (53), and a product gas outlet (54).

[0024] The heat recovery zone (6) consists of a heat exchange zone wheel surface (61), a serpentine heat exchanger (62), a preheated exhaust gas inlet (63), and a preheated exhaust gas outlet (64).

[0025] Furthermore, the pretreatment device (A) needs to be regenerated or have its parts replaced after a period of use. To ensure continuous pretreatment, the two devices are used alternately.

[0026] The exhaust gas separation catalytic rotor (B) rotates at a constant speed in the counterclockwise direction under the drive of the motor (3).

[0027] The temperature of the adsorption separation zone (4) is below 150°C, the temperature of the catalytic conversion zone is below 300°C, the heat recovery efficiency of the heat recovery zone (6) is as high as 70%-80%, and the temperature of the cooling standby zone (7) is between the heat recovery zone (6) and the adsorption separation zone (4). Considering that the sealing ring (22) in the rotor housing (2) is in long-term contact with the rotor, a special high-temperature resistant silicone that can withstand temperatures up to 350°C is used, and the lubricating oil on the surface of the silicone is a high-temperature resistant lubricating oil.

[0028] Example 2

[0029] The process of treating waste gas containing particulate matter, water vapor, and CO2 using the equipment in Example 1 is as follows: First, the waste gas enters the pretreatment device (A), where it passes through the filtration zone (12) and the dewatering zone (13) for dust removal and water removal; second, the pretreated waste gas enters the serpentine heat exchanger (62) through the preheated waste gas inlet (63) for heat exchange. The waste gas is preheated to 80-120°C while the temperature of the heat exchange zone wheel surface (61) is reduced to 120-180°C. Then, the waste gas enters the adsorption zone wheel surface (41) through the preheated waste gas outlet (64) along the waste gas inlet (42) of the adsorption separation zone (4). The CO2 in the waste gas is adsorbed by the dual-functional material on the wheel surface and separated. The purified waste gas is discharged through the tail gas outlet (43); third, the adsorption... The CO2-coated wheel surface rotates to the catalytic conversion zone (5) driven by the motor. At this time, H2 is introduced through the reaction gas inlet (53). CO2 and H2 in the catalytic zone wheel surface (51) undergo catalytic conversion under the catalytic action of the bifunctional material and the heating action (200-300℃) of the serpentine heater (52). Different products such as methane, methanol and ethanol can be obtained by selecting different bifunctional materials and different reaction conditions. These products are collected, purified and stored for later use after being discharged from the product gas outlet (54). Finally, the catalytic zone wheel surface (51) rotates to the heat recovery zone (6) and the cooling standby zone (7) in sequence to complete the heat recovery and cooling of the wheel surface. Then it rotates to the adsorption separation zone (4) to continue adsorbing and separating CO2 and catalytic hydrogenation conversion. This cycle repeats.

[0030] Example 3

[0031] The equipment in Example 1 is used to treat waste gas containing particulate matter, water vapor, and VOCs. The process is as follows: First, the waste gas enters the pretreatment device (A), where it passes through the filtration zone (12) and the dewatering zone (13) for dust removal and water removal. Second, the pretreated waste gas enters the serpentine heat exchanger (62) through the preheated waste gas inlet (63) for heat exchange. The waste gas is preheated to 40-60°C while the temperature of the heat exchange zone wheel surface (61) is reduced to 90-120°C. Then, the waste gas enters the adsorption zone wheel surface (41) through the preheated waste gas outlet (64) along the waste gas inlet (42) of the adsorption separation zone (4). The VOCs in the waste gas are adsorbed by the dual-functional material on the wheel surface and separated. The purified waste gas exits through the tail gas outlet. The VOCs are discharged from the outlet (43); then, the wheel surface that has adsorbed VOCs rotates to the catalytic conversion zone (5) driven by the motor. At this time, air is introduced through the reaction gas inlet (53). The VOCs in the wheel surface (51) of the catalytic zone are catalytically converted under the catalytic effect of the bifunctional material and the heating effect (180-250℃) of the serpentine heater (52), and the VOCs are oxidized and decomposed into small molecule products such as CO2 and H2O, and then discharged from the product gas outlet (54); finally, the wheel surface (51) of the catalytic zone rotates to the heat recovery zone (6) and the cooling standby zone (7) in sequence to complete the heat recovery and cooling of the wheel surface, and then rotates to the adsorption separation zone (4) to continue adsorbing and separating VOCs and catalytic oxidation decomposition, and so on.

[0032] The above are merely exemplary embodiments of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent exchange or substitution fall within the scope of protection of this utility model.

Claims

1. A waste gas separation and catalytic conversion coupled rotor device, characterized in that, The equipment consists of a pretreatment device (A) and a waste gas separation catalytic rotor (B). The pretreatment device (A) consists of a pretreatment inlet (11), a filtration zone (12), a water removal zone (13), and a pretreatment outlet (14). The waste gas separation catalytic rotor (B) consists of a rotor housing (2), a motor (3), an adsorption separation zone (4), a catalytic conversion zone (5), a heat recovery zone (6), and a cooling standby zone (7). The adsorption separation zone (4), the catalytic conversion zone (5), the heat recovery zone (6), and the cooling standby zone (7) together form a circular wheel surface. The base of the wheel surface is a honeycomb silicon-aluminum molecular sieve, and the surface is coated with an adsorption-catalytic dual-function material.

2. The waste gas separation catalytic conversion coupled rotor device according to claim 1, characterized in that, The pretreatment device (A) consists of two sets used in parallel and alternately. The filter material used in the filtration zone (12) of each set is polytetrafluoroethylene double-coated glass fiber fabric, and the adsorbent used in the water removal zone (13) is modified silica gel composite material.

3. The waste gas separation catalytic conversion coupled rotor device according to claim 1, characterized in that, The wheel housing (2) consists of a metal shell (21) and a sealing ring (22), wherein the sealing ring (22) has a brush structure and is coated with lubricating oil.

4. The waste gas separation catalytic conversion coupled rotor device according to claim 1, characterized in that, The speed range of the motor (3) is 1-20 r / h.

5. The waste gas separation catalytic conversion coupled rotor device according to claim 1, characterized in that, The adsorption separation zone (4) consists of an adsorption zone wheel surface (41), an exhaust gas inlet (42), and a tail gas outlet (43).

6. The waste gas separation catalytic conversion coupled rotor device according to claim 1, characterized in that, The catalytic conversion zone (5) consists of a catalytic zone wheel surface (51), a serpentine heater (52), a reaction gas inlet (53), and a product gas outlet (54).

7. The waste gas separation catalytic conversion coupled rotor device according to claim 1, characterized in that, The heat recovery zone (6) consists of a heat exchange zone wheel surface (61), a serpentine heat exchanger (62), a preheated exhaust gas inlet (63), and a preheated exhaust gas outlet (64).

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