Waste gas treatment system

Abstract

The utility model relates to the technical field of waste gas treatment equipment, in particular to a waste gas treatment system which comprises a PLC (programmable logic controller), a first-stage alkaline washing tank, a second-stage sodium hypochlorite tank, a third-stage spray tower, a dry filter, a high-air-volume activated carbon adsorption bed, a carbon monoxide furnace, a fire water tank, a centrifugal induced draft fan, a gas outlet pipe, a conveying pipe and a sealing square pipe, the upper end of the PLC is connected with the three-stage spray tower through a line and controls the three-stage spray tower to be opened and closed, the upper end of the PLC is connected with the dry filter through a line and controls the dry filter to be opened and closed, and the upper end of the PLC is connected with the high-air-volume activated carbon adsorption bed through a line and controls the high-air-volume activated carbon adsorption bed to be opened and closed. The upper end of the PLC is connected with the carbon monoxide furnace through a line and controls the carbon monoxide furnace to be opened and closed, and the upper end of the PLC is connected with the fire water tank through a line and controls the fire water tank to be opened and closed. The working efficiency of waste gas treatment is improved.

Description

Technical Field

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

[0002] Waste gas treatment refers to the pre-treatment of waste gas generated in industrial sites and factory workshops before it is discharged to meet the national standards for waste gas discharge. Generally, waste gas treatment includes organic waste gas treatment, dust waste gas treatment, acid and alkali waste gas treatment, odor waste gas treatment and air sterilization, disinfection and purification.

[0003] In the prior art, the processing device is mostly operated manually to complete the catalytic combustion process and the emission of harmless gases and heat, resulting in low working efficiency. Utility Model Content

[0004] The utility model provides a waste gas treatment system.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A waste gas treatment system includes a PLC controller, a first-level alkali washing tank, a second-level secondary sodium tank, a third-level spray tower, a dry filter, a high-air-volume activated carbon adsorption bed, a carbon monoxide furnace, a fire water tank, a centrifugal induced draft fan, an exhaust pipe, a delivery pipe, a sealed square tube, and an exhaust pipe. The upper end of the PLC controller is connected to the third-level spray tower through a line and controls its opening and closing. The upper end of the PLC controller is connected to the dry filter through a line and controls its opening and closing. The upper end of the PLC controller is connected to the high-air-volume activated carbon adsorption bed through a line and controls its opening and closing. The upper end of the PLC controller is connected to the carbon monoxide furnace through a line and controls its opening and closing. The upper end of the PLC controller is connected to the fire water tank through a line and controls its opening and closing. The right end of the PLC controller is connected to the centrifugal induced draft fan through a line and controls its opening and closing.

[0007] Furthermore, an air inlet pipe is provided at the upper end of the first-level alkali washing tank, the lower end of the air inlet pipe is fixed and connected to the upper end of the first-level alkali washing tank, the lower right end of the first-level alkali washing tank is fixed and connected to the first-level alkali washing tank through a conveying pipe, and the lower right end of the second-level secondary sodium tank is fixed and connected to the lower left end of the third-level spray tower through a conveying pipe.

[0008] Furthermore, the upper end of the three-stage spray tower is fixed and connected to the left end of the dry filter through a conveying pipe, the right end of the dry filter is fixed and connected to the left end of the high air volume activated carbon adsorption bed through a conveying pipe, and the rear end of the high air volume activated carbon adsorption bed is fixed and connected to the rear end of the carbon monoxide furnace through a conveying pipe.

[0009] Furthermore, the upper end of the high air volume activated carbon adsorption bed is fixed and connected to the left end of the centrifugal induced draft fan through a sealed square tube. The upper end of the centrifugal induced draft fan is provided with an air outlet pipe, and the lower end of the air outlet pipe is fixed and connected to the upper air outlet end of the centrifugal induced draft fan.

[0010] Beneficial Effects: After preliminary filtration through a primary alkaline wash tank, a secondary sodium tank, and a tertiary spray tower, the waste gas is fed into a high-volume activated carbon adsorption bed for heating. The activated carbon undergoes thermal desorption, releasing high concentrations of organic gases. These gases are then introduced into the catalytic combustion bed by a desorption circulating fan within the high-volume activated carbon adsorption bed. Catalytic combustion of the waste gas generates harmless gases such as carbon dioxide and water, along with some heat. This heat is then recycled to regenerate the activated carbon within the adsorption bed. Harmless gases are drawn in by a centrifugal induced draft fan and discharged through an exhaust pipe. The entire catalytic combustion process, along with heat recovery and harmless gas emissions, is automatically controlled by a PLC controller, improving waste gas treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure numerals: 1 PLC controller, 2 first-stage alkali washing tank, 3 second-stage secondary sodium tank, 4 third-stage spray tower, 5 dry filter, 6 high air volume activated carbon adsorption bed, 7 carbon monoxide furnace, 8 fire water tank, 9 centrifugal induced draft fan, 10 exhaust pipe, 11 delivery pipe, 12 sealed square tube, 13 intake pipe. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0014] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0015] Reference Figure 1, a waste gas treatment system includes a PLC controller 1, a first-level alkali washing tank 2, a second-level secondary sodium tank 3, a third-level spray tower 4, a dry filter 5, a high-air-volume activated carbon adsorption bed 6, a carbon monoxide furnace 7, a fire water tank 8, a centrifugal induced draft fan 9, an outlet pipe 10, a conveying pipe 11, a sealed square tube 12, and an air inlet pipe 13. The upper end of the PLC controller 1 is connected to the third-level spray tower 4 through a line and controls its opening and closing, the upper end of the PLC controller 1 is connected to the dry filter 5 through a line and controls its opening and closing, the upper end of the PLC controller 1 is connected to the high-air-volume activated carbon adsorption bed 6 through a line and controls its opening and closing, the upper end of the PLC controller 1 is connected to the carbon monoxide furnace 7 through a line and controls its opening and closing, the upper end of the PLC controller 1 is connected to the fire water tank 8 through a line and controls its opening and closing, and the right end of the PLC controller 1 is connected to the centrifugal induced draft fan 9 through a line and controls its opening and closing.

[0016] An air inlet pipe 13 is provided at the upper end of the first-level alkali washing tank 2, and the lower end of the air inlet pipe 13 is fixed and connected to the upper end of the first-level alkali washing tank 2. The lower right end of the first-level alkali washing tank 2 is fixed and connected to the first-level alkali washing tank 2 through a conveying pipe 11, and the lower right end of the second-level secondary sodium tank 3 is fixed and connected to the lower left end of the third-level spray tower 4 through a conveying pipe 11.

[0017] The upper end of the three-stage spray tower 4 is fixed and connected to the left end of the dry filter 5 through a conveying pipe 11, the right end of the dry filter 5 is fixed and connected to the left end of the high air volume activated carbon adsorption bed 6 through a conveying pipe 11, and the rear end of the high air volume activated carbon adsorption bed 6 is fixed and connected to the rear end of the carbon monoxide furnace 7 through a conveying pipe 11.

[0018] The upper end of the high air volume activated carbon adsorption bed 6 is fixed and connected to the left end of the centrifugal induced draft fan 9 through a sealed square tube 12. The upper end of the centrifugal induced draft fan 9 is provided with an air outlet pipe 10, and the lower end of the air outlet pipe 10 is fixed and connected to the upper air outlet end of the centrifugal induced draft fan 9.

[0019] Working principle:

[0020] After preliminary filtration through the primary alkaline wash tank 2, the secondary sodium tank 3, and the tertiary spray tower 4, the exhaust gas is fed into a high-volume activated carbon adsorption bed 6 for heating. The activated carbon undergoes thermal desorption, releasing high concentrations of organic gases. These gases are then introduced into the catalytic combustion bed by a desorption circulation fan within the high-volume activated carbon adsorption bed 6. Catalytic combustion of the exhaust gas generates harmless gases such as carbon dioxide and water, along with some heat. Heat is recovered for desorption and regeneration of the activated carbon within the adsorption bed. Harmless gases are drawn in by a centrifugal induced draft fan 9 and discharged through an exhaust pipe 10. The entire catalytic combustion process, along with heat recovery and harmless gas emission, is automatically controlled by a PLC controller 1, improving exhaust gas treatment efficiency.

[0021] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An exhaust gas treatment system, characterized in that: The invention comprises a PLC controller (1), a first-stage alkali washing tank (2), a second-stage secondary sodium tank (3), a third-stage spray tower (4), a dry filter (5), a high-volume activated carbon adsorption bed (6), a carbon monoxide furnace (7), a fire water tank (8), a centrifugal induced draft fan (9), an air outlet pipe (10), a delivery pipe (11), a sealed square pipe (12), and an air inlet pipe (13). The upper end of the PLC controller (1) is connected to the third-stage spray tower (4) through a circuit and controls the opening and closing of the third-stage spray tower. The upper end of the PLC controller (1) is connected to the third-stage spray tower (4) through a circuit. The upper end of the PLC controller (1) is connected to the high-air-volume activated carbon adsorption bed (6) through a line and controls its opening and closing. The upper end of the PLC controller (1) is connected to the carbon monoxide furnace (7) through a line and controls its opening and closing. The upper end of the PLC controller (1) is connected to the fire water tank (8) through a line and controls its opening and closing. The right end of the PLC controller (1) is connected to the centrifugal induced draft fan (9) through a line and controls its opening and closing.

2. The exhaust gas treatment system according to claim 1, characterized in that: An air inlet pipe (13) is provided at the upper end of the first-stage alkali washing tank (2), and a lower end of the air inlet pipe (13) is fixed to and communicated with the upper end of the first-stage alkali washing tank (2). The lower right end of the first-stage alkali washing tank (2) is fixed to and communicated with the first-stage alkali washing tank (2) via a delivery pipe (11), and the lower right end of the second-stage secondary sodium tank (3) is fixed to and communicated with the lower left end of the third-stage spray tower (4) via a delivery pipe (11).

3. The exhaust gas treatment system according to claim 1, characterized in that: The upper end of the three-stage spray tower (4) is fixed and connected to the left end of the dry filter (5) through a conveying pipe (11), the right end of the dry filter (5) is fixed and connected to the left end of the high-air-volume activated carbon adsorption bed (6) through a conveying pipe (11), and the rear end of the high-air-volume activated carbon adsorption bed (6) is fixed and connected to the rear end of the carbon monoxide furnace (7) through a conveying pipe (11).

4. The exhaust gas treatment system according to claim 1, characterized in that: The upper end of the high-air-volume activated carbon adsorption bed (6) is fixed to and communicated with the left end of the centrifugal induced draft fan (9) via a sealed square tube (12); an air outlet pipe (10) is provided at the upper end of the centrifugal induced draft fan (9); and the lower end of the air outlet pipe (10) is fixed to and communicated with the upper air outlet end of the centrifugal induced draft fan (9).

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