Zeolite runner comprehensive system for treating peculiar smell and organic waste gas in tobacco industry

Abstract

The utility model belongs to the technical field of organic waste gas treatment, and particularly relates to a zeolite rotating wheel comprehensive system for treating peculiar smell and organic waste gas in the tobacco industry, which comprises an alkaline washing tower, a waste gas pipe mounted on the alkaline washing tower, a water washing tower connected to one side of the alkaline washing tower, and a dry type filtering device connected to one side of the water washing tower far away from the alkaline washing tower. The side, away from the water washing tower, of the dry type filtering device is connected with a zeolite rotating wheel, the zeolite rotating wheel comprises an adsorption area, a desorption area and a cooling area, the adsorption area on the zeolite rotating wheel is connected with an adsorption fan, the end, away from the adsorption area, of the adsorption fan is connected with a chimney, and an outlet of the cooling area on the zeolite rotating wheel is connected with a desorption heat exchanger. One end, far away from the cooling area, of the desorption heat exchanger is connected into the desorption area on the zeolite rotating wheel. According to the device, organic waste gas generated in the tobacco processing process can be effectively removed through the adsorption, concentration and desorption processes of the zeolite rotating wheel, meanwhile, the operation cost is reduced, and secondary pollution is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of organic waste gas treatment technology, specifically relating to a zeolite rotor integrated system for treating odors and organic waste gas from the tobacco industry. Background Technology

[0002] During the tobacco processing and production process, the heating, humidification, and drying of tobacco leaves generate a large amount of organic waste gas. This waste gas contains a variety of organic chemical substances, such as aromatic hydrocarbons and alkanes, which have irritating odors and pose a potential threat to human health. Workers exposed to these waste gases may experience physical and psychological reactions such as dizziness and depression. In severe cases, it may even lead to symptoms such as nausea and vomiting. Long-term exposure may also cause irreversible damage to multiple tissues and organs.

[0003] Currently, the main methods for treating odorous waste gas from the tobacco industry include water washing, photocatalysis, and activated carbon adsorption. However, these individual treatment technologies have certain limitations. While water washing can remove some water-soluble organic matter, it is not effective for treating insoluble substances. Photocatalysis is less efficient when treating low-concentration waste gas and requires sophisticated equipment. Although activated carbon adsorption has high adsorption efficiency, it requires frequent replacement of activated carbon after saturation, increasing treatment costs and posing a risk of secondary pollution.

[0004] Given the complex composition, low concentration, and large volume of waste gas from the tobacco industry, a single treatment process is insufficient to achieve the desired results. Therefore, developing a highly efficient, economical, and environmentally friendly waste gas treatment system is particularly urgent. Utility Model Content

[0005] The purpose of this invention is to provide a zeolite rotor integrated system for treating odors and organic waste gases in the tobacco industry. It can effectively remove organic waste gases generated during tobacco processing through the adsorption, concentration and desorption processes of the zeolite rotor, while reducing operating costs and secondary pollution.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A zeolite rotor integrated system for treating odors and organic waste gas in the tobacco industry includes an alkaline scrubbing tower with a waste gas pipe installed on it. A water scrubbing tower is connected to one side of the alkaline scrubbing tower, a dry filter is connected to the side of the water scrubbing tower away from the alkaline scrubbing tower, and a zeolite rotor is connected to the side of the dry filter is away from the water scrubbing tower.

[0008] The zeolite rotor includes an adsorption zone, a desorption zone, and a cooling zone;

[0009] The adsorption zone on the zeolite rotor is connected to an adsorption fan, and a chimney is connected to the end of the adsorption fan away from the adsorption zone.

[0010] The outlet of the cooling zone on the zeolite rotor is connected to a desorption heat exchanger, and the end of the desorption heat exchanger away from the cooling zone is connected to the desorption zone on the zeolite rotor.

[0011] The outlet of the desorption zone on the zeolite rotor is connected to a desorption fan. The end of the desorption fan away from the desorption zone is connected to a preheating heat exchanger. The end of the preheating heat exchanger away from the desorption fan is connected to a flame arrester. The end of the flame arrester away from the preheating heat exchanger is connected to the inlet of the catalytic combustion device.

[0012] The outlet of the catalytic combustion device is connected to the desorption heat exchanger, and the desorption heat exchanger is connected to the preheating heat exchanger. A chimney is connected to the end of the preheating heat exchanger away from the desorption heat exchanger.

[0013] The technical effects achieved by this utility model are as follows:

[0014] This invention utilizes a combined and synergistic process of multiple technologies, including chemical spraying purification, zeolite rotor physical adsorption, and high-efficiency catalytic oxidation, to effectively solve the problems of particulate matter, organic pollutants, and odor in tobacco exhaust gas.

[0015] This invention utilizes an automatic dosing device mounted on an alkali washing tower, comprising a metering and dosing system, a reagent dissolution and preparation system, a safety system, and a control system. It achieves high-precision and high-stability reagent addition through a liquid metering pump, reducing the workload of personnel and equipment maintenance.

[0016] This invention improves the overall thermal efficiency of the equipment by using a desorption heat exchanger and a preheating heat exchanger to preheat the desorbed gas from the rotor and the exhaust gas from the inlet of the catalytic combustion device with the high-temperature hot gas from the outlet of the catalytic combustion device.

[0017] This invention features a desorption temperature regulating valve and a heat exchange flow regulating valve connected in parallel to the outlet of the zeolite rotor cooling zone and the desorption heat exchanger. By dynamically adjusting the two valves, precise control of the desorption temperature can be achieved. Attached Figure Description

[0018] Figure 1 This is a system schematic diagram of this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Alkali washing tower; 2. Automatic dosing device for alkali washing tower; 3. Water washing tower; 4. Demisting device; 5. Dry filtration device; 6. Zeolite rotor; 61. Adsorption zone; 62. Desorption zone; 63. Cooling zone; 7. Adsorption fan; 8. Chimney; 9. Heat exchange flow regulating valve; 10. Desorption temperature regulating valve; 11. Preheating heat exchanger; 12. Desorption heat exchanger; 13. Catalytic combustion device; 14. Flame arrester; 15. Desorption fan; 16. Desorption fresh air valve; 17. Inlet fresh air valve. Detailed Implementation

[0021] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0022] like Figure 1 As shown, a zeolite rotary integrated system for treating odors and organic waste gas from the tobacco industry includes an alkaline scrubbing tower 1 equipped with an automatic dosing device 2. Furthermore, an air inlet valve 17 is installed on the waste gas pipe of the alkaline scrubbing tower 1. Through the installation of the air inlet valve 17, a certain amount of fresh air can be introduced to dilute the high-concentration waste gas, reducing its concentration to a range that the alkaline scrubbing tower 1 can effectively handle, ensuring the stability of the treatment effect. Moreover, introducing an appropriate amount of fresh air through the air inlet valve 17 can balance the waste gas. The flow rate is adjusted to maintain a relatively stable airflow within the alkaline scrubbing tower 1, ensuring sufficient contact time between the waste gas and the scrubbing liquid, thereby improving the treatment effect. The automatic dosing device 2 of the alkaline scrubbing tower is used to automatically add chemicals to the alkaline scrubbing tower 1. An waste gas pipe is installed on the alkaline scrubbing tower 1, and a water scrubbing tower 3 is connected to one side of the alkaline scrubbing tower 1. A dry filter device 5 is connected to the side of the water scrubbing tower 3 away from the alkaline scrubbing tower 1. A demisting device 4 is connected between the outlet of the water scrubbing tower 3 and the dry filter device 5. During operation, the water scrubbing tower 3 will cause the waste gas to carry a large number of water droplets. If these water droplets directly enter the dry filter device 5, the filter material will become damp, resulting in reduced filtration efficiency and increased resistance. In addition, the water droplets may contain some dissolved or suspended impurities, which will gradually accumulate on the surface of the filter material after entering the dry filter device 5, causing filter blockage, increasing the operating resistance of the system, and affecting the normal operation of the entire exhaust gas treatment system. Therefore, the installation of the demister device 4 can avoid the above problems. The dry filter device 5 is a two-stage dry filter device. The side of the dry filter device 5 away from the water washing tower 3 is connected to the zeolite rotor 6.

[0023] The zeolite rotor 6 includes an adsorption zone 61, a desorption zone 62, and a cooling zone 63;

[0024] An adsorption zone 61 on the zeolite rotor 6 is connected to an adsorption fan 7, and a chimney 8 is connected to the end of the adsorption fan 7 away from the adsorption zone 61.

[0025] The outlet of the cooling zone 63 on the zeolite rotor 6 is connected to a desorption heat exchanger 12, and the end of the desorption heat exchanger 12 away from the cooling zone 63 is connected to the desorption zone 62 on the zeolite rotor 6.

[0026] The outlet of the desorption zone 62 on the zeolite rotor 6 is connected to a desorption fan 15. Furthermore, a desorption fresh air valve 16 connects the desorption zone 62 and the desorption fan 15. The desorption fresh air valve 16 allows the introduced fresh air to act as a heat carrier, making the externally supplied heat more uniform and promoting the desorption of the adsorbate. A preheating heat exchanger 11 is connected to the end of the desorption fan 15 furthest from the desorption zone 62. A flame arrester 14 is connected to the end of the preheating heat exchanger 11 furthest from the desorption fan 15, and the inlet of the catalytic combustion device 13 is connected to the end of the flame arrester 14 furthest from the preheating heat exchanger 11. A flame arrester 14 connects the preheating heat exchanger 11 and the catalytic combustion device 13. The catalytic combustion device 13... The reaction is an oxidation reaction, which may produce a high-temperature flame. If, due to some sudden situation, such as airflow fluctuation or equipment failure, the flame propagates backward to the preheating heat exchanger 11, it may cause the combustible mixture in the preheating heat exchanger 11 to explode or burn violently, causing a serious safety accident. The flame arrester 14 can effectively prevent the flame from passing through, cut off the flame propagation path, prevent backfire, and ensure the safety of equipment and personnel. The outlet of the cooling zone 63 and the desorption heat exchanger 12 are connected in parallel with the heat exchange flow regulating valve 9 and the desorption temperature regulating valve 10. By setting the heat exchange flow regulating valve 9 and the desorption temperature regulating valve 10, the heat exchange flow rate and the desorption temperature can be regulated.

[0027] The outlet of the catalytic combustion device 13 is connected to the desorption heat exchanger 12, and the desorption heat exchanger 12 is connected to the preheating heat exchanger 11. A chimney 8 is connected to the end of the preheating heat exchanger 11 away from the desorption heat exchanger 12.

[0028] All of the above-mentioned components can be connected by pipes, such as alkaline washing tower 1 and water washing tower 3 being connected by pipes.

[0029] The pretreatment system consists of an alkaline washing tower 1, an automatic dosing device for the alkaline washing tower 2, a water washing tower 3, a demisting device 4, and a dry filtration device 5. The rotary adsorption system consists of an adsorption zone 61 on the zeolite rotor 6, an adsorption fan 7, and a chimney 8. The desorption catalytic combustion system consists of a desorption zone 62 on the zeolite rotor 6, a desorption fan 15, and a catalytic combustion device 13.

[0030] The normal adsorption method of the equipment is as follows: the collected organic waste gas passes through the alkaline washing tower 1 and the water washing tower 3 to remove water-soluble odor organic substances and some particulate matter, then enters the demisting device 4 to remove liquid water droplets, and then passes through the dry filter device 5 to remove most of the particulate matter. Finally, the qualified gas after adsorption in the adsorption zone 61 on the zeolite rotor 6 is discharged to the chimney 8 through the adsorption fan 7.

[0031] The normal desorption process of the equipment is as follows: a stream of gas drawn from the outlet of the dry filter device 5 is cooled down in the cooling zone 63 of the zeolite rotor 6 and then enters the desorption heat exchanger 12 for heat exchange and heating. The heated gas desorbs the gas in the desorption zone 62 of the zeolite rotor 6. The desorbed high-concentration waste gas is preheated by the desorption fan 15, the preheating heat exchanger 11 and the flame arrester 14 and then enters the catalytic combustion device 13 for high-temperature catalytic decomposition.

[0032] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A zeolite rotor integrated system for treating odors and organic waste gas from the tobacco industry, comprising an alkaline scrubbing tower (1), wherein an exhaust gas pipe is installed on the alkaline scrubbing tower (1), characterized in that: A water washing tower (3) is connected to one side of the alkaline washing tower (1), and a dry filter device (5) is connected to the side of the water washing tower (3) away from the alkaline washing tower (1). A zeolite rotor (6) is connected to the side of the dry filter device (5) away from the water washing tower (3). The zeolite rotor (6) includes an adsorption zone (61), a desorption zone (62), and a cooling zone (63). The adsorption zone (61) on the zeolite rotor (6) is connected to an adsorption fan (7), and the end of the adsorption fan (7) away from the adsorption zone (61) is connected to a chimney (8). The outlet of the cooling zone (63) on the zeolite rotor (6) is connected to a desorption heat exchanger (12), and one end of the desorption heat exchanger (12) away from the cooling zone (63) is connected to the desorption zone (62) on the zeolite rotor (6). The outlet of the desorption zone (62) on the zeolite rotor (6) is connected to a desorption fan (15), and the end of the desorption fan (15) away from the desorption zone (62) is connected to a preheating heat exchanger (11). The end of the preheating heat exchanger (11) away from the desorption fan (15) is connected to a flame arrester (14), and the end of the flame arrester (14) away from the preheating heat exchanger (11) is connected to the inlet of the catalytic combustion device (13). The outlet of the catalytic combustion device (13) is connected to the desorption heat exchanger (12), and the desorption heat exchanger (12) is connected to the preheating heat exchanger (11). The end of the preheating heat exchanger (11) away from the desorption heat exchanger (12) is connected to a chimney (8).

2. The zeolite rotor integrated system for treating odors and organic waste gas in the tobacco industry according to claim 1, characterized in that: A demisting device (4) is connected between the outlet of the water washing tower (3) and the dry filter device (5).

3. The zeolite rotor integrated system for treating odors and organic waste gas in the tobacco industry according to claim 1, characterized in that: The alkaline washing tower (1) is equipped with an automatic dosing device (2).

4. The zeolite rotor integrated system for treating odors and organic waste gas in the tobacco industry according to claim 1, characterized in that: A heat exchange flow regulating valve (9) and a desorption temperature regulating valve (10) are connected in parallel between the outlet of the cooling zone (63) and the desorption heat exchanger (12).

5. The zeolite rotor integrated system for treating odors and organic waste gas in the tobacco industry according to claim 1, characterized in that: An air inlet valve (17) is installed on the exhaust gas pipe of the alkaline washing tower (1).

6. The zeolite rotor integrated system for treating odors and organic waste gas in the tobacco industry according to claim 1, characterized in that: A desorption fresh air valve (16) is connected between the desorption zone (62) and the desorption fan (15).

7. The zeolite rotor integrated system for treating odors and organic waste gas in the tobacco industry according to claim 1, characterized in that: A flame arrester (14) is connected between the preheating heat exchanger (11) and the catalytic combustion device (13).

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