CN-121971985-A - Air purification device for chemical raw material preparation

Abstract

The invention belongs to the technical field of air purification devices, in particular to an air purification device for preparing chemical raw materials, which comprises a tower body, an exhaust pipe for discharging gas reaching standards and a silk screen for removing aerosol in the gas, wherein the silk screen is arranged in the exhaust pipe, a spraying layer and a packing layer for chemically neutralizing the waste gas are also arranged in the tower body, cleaning components are arranged on two sides of the silk screen, and the two groups of cleaning components are symmetrically distributed. And simultaneously, two groups of cleaning seats move on two sides of the silk screen, so that the uniformly distributed rollers apply continuous and flexible mechanical shearing force to the surface of the silk screen, and the hard crystallization layer combined with the silk screen fiber inlay can be effectively crushed and stripped. The online cooperative cleaning of mechanical scraping-hydraulic cleaning is realized, and the hard scale removal rate is remarkably improved. So as to reduce manpower and shutdown, ensure the purification treatment effect on waste gas during the preparation of chemical raw materials, and further ensure the production continuity.

Inventors

• Pang Junyang

Assignees

• 安徽省顺宵化工有限公司

Dates

Publication Date

20260505

Application Date

20260316

Claims (8)

1. 1. The air purification device for preparing the chemical raw materials comprises a tower body (1), an exhaust pipe (11) for discharging gas reaching the standard and a silk screen (12) for removing aerosol in the gas, wherein the silk screen (12) is arranged in the exhaust pipe (11), and a spraying layer and a packing layer for chemically neutralizing the waste gas are further arranged in the tower body (1); The device is characterized in that cleaning components are arranged on two sides of the silk screen (12), and the two groups of cleaning components are symmetrically distributed; the cleaning assembly comprises a cleaning seat (2) and rollers (21), the cleaning seat (2) is slidably mounted in the exhaust pipe (11), two rows of rollers (21) are arranged on one side, close to the silk screen (12), of the cleaning seat (2), and the two rows of rollers (21) are longitudinally equidistantly distributed along the outer wall of the cleaning seat (2); The cleaning seat (2) is internally and uniformly provided with flushing pipes (31), each flushing pipe (31) is communicated with each other through a connecting pipe (3), and the connecting pipes (3) penetrate through the top of the cleaning seat (2) and extend outwards.
2. 2. The air purification device for preparing chemical raw materials according to claim 1, wherein a first reciprocating screw rod (24) is arranged in the cleaning seat (2) in a threaded manner, the first reciprocating screw rod (24) is rotatably arranged in the exhaust pipe (11), and a motor (25) is arranged at one end of the first reciprocating screw rod (24).
3. 3. An air purification device for preparing chemical raw materials according to claim 2, wherein a mounting frame (22) is arranged outside each roller (21), and each mounting frame (22) is slidably arranged in the cleaning seat (2); A moving plate (216) is elastically installed in the cleaning seat (2) through a spring (217), and the moving plate (216) is arranged at one end of the installation frame (22).
4. 4. An air purification device for preparing chemical raw materials according to claim 3, wherein each mounting frame (22) is embedded with a movable seat (211), and each movable seat (211) is slidably arranged in the cleaning seat (2); Every is listed as remove seat (211) and is established into two sets of, two sets of remove seat (211) all screw thread installation in the outside of second reciprocating screw (212), second reciprocating screw (212) rotate install in clearance seat (2), the top fixed mounting of second reciprocating screw (212) has first gear (213), one side meshing of first gear (213) has first rack board (214), first rack board (214) fixed mounting is in blast pipe (11).
5. 5. The air purification device for preparing chemical raw materials according to claim 3, wherein the two sides of the mounting frame (22) are provided with first protection plates (218), and the two first protection plates (218) are slidably arranged on the outer wall of the cleaning seat (2).
6. 6. The air purification device for preparing chemical raw materials according to claim 4, wherein the two groups of mounting frames (22) are fixedly connected through connecting plates (23), the two connecting plates (23) are respectively and slidably arranged at two ends of a moving plate (216), cams (215) are arranged on one side of two ends of the moving plate (216), and the two cams (215) are fixedly arranged on the outer wall of a second reciprocating screw rod (212).
7. 7. The air purification device for preparing chemical raw materials according to claim 1, wherein a slag discharging plate (4) is arranged at one side, close to a silk screen (12), of the bottom of the cleaning seat (2), and the slag discharging plate (4) is slidably arranged in a slag discharging groove (26).
8. 8. The air purification device for preparing the chemical raw materials according to claim 7, wherein one side of the slag discharging plate (4) is fixedly connected with a sliding block (41), the sliding block (41) is slidably installed in the cleaning seat (2), a threaded rod (42) is connected with the sliding block (41) in a threaded mode, a second gear (43) is fixedly connected to the top end of the threaded rod (42), a third gear (44) is meshed with one side of the second gear (43), a rotating shaft (45) is fixedly installed in the third gear (44), a second rack (46) is meshed with one side of the third gear (44), and the second rack (46) is slidably installed in the cleaning seat (2).

Description

Air purification device for chemical raw material preparation Technical Field The invention belongs to the technical field of air purification devices, and particularly relates to an air purification device for preparing chemical raw materials. Background During the preparation, storage and filling of raw materials such as hydrogen peroxide, glacial acetic acid and the like, a large amount of process waste gas containing acidic, oxidative and organic volatile matters is generated. At present, a spray absorption tower is generally adopted in the industry as a core purification unit, and alkali liquor is utilized to chemically neutralize acid gas. However, the spraying process itself produces a large amount of "secondary aerosols" based on alkaline solutions and reaction products (e.g., sodium acetate). To remove these aerosols, prevent visible plume emissions and corrosion of downstream equipment, the addition of a wire mesh mist eliminator to the top of the spray tower has become a standard configuration. Existing solutions typically rely on an on-line flushing system to maintain the patency of the wire mesh mist eliminator. It is common practice to provide a fixed or rotating shower above the screen, periodically flushing with clear water, intended to flush away contaminants adhering to the screen surface. However, in the actual operation process, particularly when treating chemical waste gas which is easy to crystallize such as sodium acetate, because firm chemical combination and physical inlay are formed between hard scale layers such as sodium acetate crystals and silk screen fibers through crystallization force, the shear force simply relying on water flow is far insufficient to destroy and peel off the scale layers. In addition, hard scale tends to accumulate at the intersections of the wires, and water currents are difficult to penetrate effectively and act on the whole scale layer, resulting in frequent unplanned shutdowns, and off-line chemical soak cleaning after the whole screen module is disassembled. This not only results in high maintenance costs and a harsh working environment, but also seriously affects the continuity and economy of production. Therefore, the invention provides an air purifying device for preparing chemical raw materials. Disclosure of Invention In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved. The technical scheme includes that the air purifying device for preparing the chemical raw materials comprises a tower body, an exhaust pipe for discharging standard-reaching gas and a silk screen for removing aerosol in the gas, wherein the silk screen is arranged in the exhaust pipe, and a spraying layer and a packing layer for chemically neutralizing the waste gas are further arranged in the tower body; cleaning components are arranged on two sides of the silk screen, and the two groups of cleaning components are symmetrically distributed; the cleaning assembly comprises a cleaning seat and rollers, the cleaning seat is slidably mounted in the exhaust pipe, two rows of rollers are arranged on one side, close to the silk screen, of the cleaning seat, and the two rows of rollers are longitudinally equidistantly arranged along the outer wall of the cleaning seat; The cleaning seat is internally and uniformly provided with flushing pipes, each flushing pipe is communicated with each other through a connecting pipe, and the connecting pipes penetrate through the top of the cleaning seat and extend outwards. The cleaning seat is internally provided with a first reciprocating screw rod in a threaded manner, the first reciprocating screw rod is rotatably arranged in the exhaust pipe, and one end of the first reciprocating screw rod is provided with a motor. The outer part of each roller is provided with a mounting frame, and each mounting frame is slidably arranged in the cleaning seat; the cleaning seat is internally provided with a movable plate through a spring, and the movable plate is arranged at one end of the mounting frame. Each mounting frame is internally embedded with a movable seat, and each movable seat is slidably arranged in the cleaning seat; Each row of movable seats are arranged into two groups, the two groups of movable seats are respectively and spirally arranged outside a second reciprocating screw rod, the second reciprocating screw rod is rotatably arranged in the cleaning seat, a first gear is fixedly arranged at the top of the second reciprocating screw rod, a first rack plate is meshed with one side of the first gear, and the first rack plate is fixedly arranged in the exhaust pipe. The both sides of mounting bracket all are provided with first guard plate, two equal slidable mounting of first guard plate is at the outer wall of clearance seat. The two groups of mounting frames are fixedly connected through connecting plates, the two connecting plates are respectively and slidably mou