Tail gas treatment device for safe production of trimethyl phosphite

Abstract

The utility model relates to the technical field of trimethyl phosphite safety production, in particular to a tail gas treatment device for trimethyl phosphite safety production, which comprises an operation box, a spraying mechanism is mounted at the top end of the operation box, the spraying mechanism comprises a placing box and a spraying part, the spraying part is mounted at the bottom end of the placing box, and the spraying part is mounted at the bottom end of the placing box. The spraying part is installed on the upper side of the interior of the spraying box, an air inlet pipe is arranged at the left end of the spraying box and extends to the outer side of the left end of the operation box, a C-shaped pipe is installed on the right side of the spraying box, a water collecting box is arranged on the bottom side of the spraying box, and a purification mechanism is installed on the bottom side of the interior of the operation box and comprises a purification box and a screen. Primarily treated tail gas can be conveyed through a C-shaped pipe on the right side of the spraying box to be matched with a purification box on the bottom side to be purified, operation can be carried out continuously through the design, resource consumption is reduced, inactivated activated carbon can be taken out through an extension rod to be replaced, and therefore the applicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of safe production technology of trimethyl phosphite, specifically to a tail gas treatment device for safe production of trimethyl phosphite. Background Technology

[0002] Trimethyl phosphite, as an important organophosphorus chemical raw material, is widely used in pesticides, pharmaceuticals, plastic additives and many other fields;

[0003] For example, CN214106778U discloses a processing device for producing trimethyl phosphite, including a cylindrical tank, a stirring device, a first pipe and a second pipe. The first pipe enters the tank from the top or upper part, and the second pipe enters the tank from the bottom or lower part. The ends of the first pipe and the second pipe are connected to umbrella-shaped distributors, and the two umbrella-shaped distributors are arranged opposite to each other and are located inside a mixing isolation body. The periphery of the mixing isolation body is fixedly installed inside the tank by connecting rods, and several liquid outlets are evenly opened on the side. The aforementioned trimethyl phosphite production processing device can fully mix raw materials, increase reaction yield, has a high degree of automation, and produces high product content. However, the waste gas generated during the trimethyl phosphite production process requires alkaline water spraying followed by activated carbon adsorption before the exhaust gas can meet emission standards. Existing processing devices occupy a large area, increasing production costs. Furthermore, existing spraying devices cannot quickly treat continuously transported exhaust gas, resulting in low efficiency. Additionally, the activity of activated carbon decreases after prolonged adsorption, further reducing the effectiveness of exhaust gas treatment. Therefore, there is an urgent need to design an exhaust gas treatment device for the safe production of trimethyl phosphite to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a tail gas treatment device for the safe production of trimethyl phosphite, in order to solve the problems mentioned in the background art, which require the exhaust gas generated on the upper side of trimethyl phosphite to be treated by alkaline water spray reaction and then by activated carbon adsorption before the exhaust gas can meet the emission standards. However, the existing treatment devices occupy a large area, which increases the production cost. Furthermore, the existing spray devices cannot quickly treat the continuously transported exhaust gas and have low efficiency. At the same time, the activity of activated carbon decreases after long-term adsorption, thus reducing the effect of exhaust gas treatment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tail gas treatment device for the safe production of trimethyl phosphite, comprising an operation box, a spray mechanism installed at the top of the operation box, the spray mechanism comprising a placement box and spray components, a spray component installed at the bottom of the placement box, the spray component installed on the upper inner side of the spray box, an air inlet pipe extending to the outer left side of the operation box at the left end of the spray box, a C-shaped pipe installed on the right side of the spray box, a water collection box at the bottom of the spray box, a purification mechanism installed on the bottom inner side of the operation box, the purification mechanism comprising a purification box and a screen, the bottom end of the purification box connected to the bottom end of the C-shaped pipe at the right end, a screen fixedly installed on the bottom inner side of the purification box, a purification component slidably mounted on the upper side of the screen, and three sets of support plates installed on the lower left inner side of the operation box.

[0006] Preferably, a partition plate is fixed in the center of the inside of the control box, a water collection tank is installed on the upper side of the partition plate, and an extension opening is provided on the lower left wall of the control box.

[0007] Preferably, the spraying component includes a water pump and five sets of connecting pipes. The water pump is installed inside the top side of the control box and connected to the bottom side of the placement box. The five sets of connecting pipes pass through the top of the spraying box and are respectively installed at the top of the five sets of porous square pipes. Multiple sets of atomizing nozzles are installed at the bottom of each set of porous square pipes.

[0008] Preferably, three sets of circular holes are evenly spaced on the bottom side of the inside of the spray box, and the three sets of circular holes are perpendicular to the top of the water collection box.

[0009] Preferably, the inside of the water collection tank is provided with a triangular groove, and a drain pipe is installed on the left side of the inside of the triangular groove, extending to the outer left end of the control box.

[0010] Preferably, an outwardly extending exhaust pipe is installed on the upper left side of the interior of the purification box, and slide rails are fixed on both the front and rear walls of the interior of the purification box, with a square groove opened on the left wall of the interior of the purification box.

[0011] Preferably, the purification component includes a sliding box, the front end of which slides within a slide rail, a breathable mesh pad is installed at the bottom of the sliding box, and two sets of extension rods are fixed to the left end of the sliding box, with a horizontal plate connecting and fixing the left ends of the two sets of extension rods.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This is a tail gas treatment device for the safe production of trimethyl phosphite. The water pump in the spray unit can evenly transport the gas into a porous square pipe through five sets of connecting pipes, and then spray it out through atomizing nozzles. This design can uniformly and quickly treat the tail gas, improving efficiency and convenience. The pre-treated tail gas can be transported to the purification box on the bottom side through the C-shaped pipe on the right side of the spray box for further purification. This design allows for continuous operation and saves resources.

[0014] This device for treating exhaust gas in the safe production of trimethyl phosphite allows for the discharge of wastewater through a triangular groove and drain pipe in the water collection tank. A screen installed in the purification tank prevents activated carbon from falling out. Activated carbon placed inside the sliding box adsorbs and treats the discharged exhaust gas, improving the quality of purification. An extension rod allows for the removal and replacement of deactivated activated carbon, thus enhancing the device's versatility. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the present utility model;

[0016] Figure 2 This is a front sectional view of the present invention;

[0017] Figure 3 This is a cross-sectional view of the internal structure of the spray box of this utility model;

[0018] Figure 4 This is a cross-sectional view of the internal structure of the purification box of this utility model.

[0019] In the diagram: 1. Control box; 11. Partition plate; 12. Extension port; 2. Spraying mechanism; 21. Placement box; 22. Spraying component; 221. Water pump; 222. Connecting pipe; 223. Perforated square pipe; 224. Atomizing nozzle; 3. Spraying box; 301. Circular hole; 31. Air inlet pipe; 32. C-shaped pipe; 4. Water collection box; 41. Triangular groove; 42. Drain pipe; 5. Purification mechanism; 51. Purification box; 511. Exhaust pipe; 512. Slide rail; 513. Square groove; 52. Screen; 53. Purification component; 531. Sliding box; 532. Breathable mesh pad; 533. Extension rod; 514. Horizontal plate; 6. Support plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 One embodiment provided by this utility model:

[0022] A tail gas treatment device for safe production of trimethyl phosphite is disclosed in this application. The water pump 221, atomizing nozzle 224, and breathable mesh pad 532 used in this application are commercially available products, and their principles and connection methods are existing technologies well known to those skilled in the art. The device includes an operation box 1, with a spray mechanism 2 installed at the top of the operation box 1. The spray mechanism 2 includes a placement box 21 and spray elements 22. The spray elements 22 are installed at the bottom of the placement box 21. Inside the upper side of the spray box 3, an air inlet pipe 31 is provided at the left end of the spray box 3, extending to the outer left side of the operation box 1. A C-shaped pipe 32 is installed on the right side of the spray box 3. A water collection tank 4 is provided at the bottom side of the spray box 3. A purification mechanism 5 is installed at the bottom inside the operation box 1. The purification mechanism 5 includes a purification box 51 and a screen 52. The right end of the purification box 51 is connected to the bottom end of the C-shaped pipe 32. A screen 52 is fixed at the bottom inside the purification box 51. A purification component 53 is slidably provided on the upper side of the screen 52. Three sets of support plates 6 are installed on the lower left side inside the operation box 1.

[0023] As a further feature of this invention, a partition plate 11 is fixedly installed in the center of the internal part of the control box 1, a water collection tank 4 is installed on the upper side of the partition plate 11, and an extension opening 12 is provided on the lower left wall of the control box 1 to facilitate the replacement of activated carbon.

[0024] Furthermore, the spray unit 22 includes a water pump 221 and five sets of connecting pipes 222. The water pump 221 is installed inside the top side of the control box 1 and connected to the bottom side of the placement box 21. The five sets of connecting pipes 222 pass through the top of the spray box 3 and are respectively installed at the top of five sets of porous square pipes 223. Multiple sets of atomizing nozzles 224 are installed at the bottom of each set of porous square pipes 223 to further treat the exhaust gas, which is convenient and quick.

[0025] Furthermore, three sets of circular holes 301 are evenly spaced on the bottom side of the inside of the spray box 3. The three sets of circular holes 301 are vertically positioned on the top side of the water collection box 4. A triangular groove 41 is provided inside the water collection box 4. A drain pipe 42 is installed on the left side of the inside of the triangular groove 41, extending to the outer left side of the operation box 1, which facilitates the reception and discharge of alkaline water.

[0026] As a further improvement of this utility model, an outwardly extending exhaust pipe 511 is installed on the upper left side of the interior of the purification box 51. Slide rails 512 are fixedly provided on both the front and rear walls of the interior of the purification box 51. A square groove 513 is opened on the left wall of the interior of the purification box 51. The purification component 53 includes a sliding box 531. The front end of the sliding box 531 slides in the slide rail 512. A breathable mesh pad 532 is installed at the bottom of the interior of the sliding box 531. Two sets of extension rods 533 are fixedly provided on the left end of the sliding box 531. A horizontal plate 514 is provided on the left end of the two sets of extension rods 533 for connection and fixation. This is beneficial for activated carbon to adsorb and treat the exhaust gas, thereby improving the quality of exhaust gas purification.

[0027] Working principle: When in use, the user first sends the exhaust gas through the air inlet pipe 31 on the top left of the control box 1 into the spray box 3. Then, the water pump 221 is turned on to extract the alkaline water in the box 21 and sends it through the five sets of connecting pipes 222 on the bottom to the porous square pipe 223 inside the spray box 3. The water is then sprayed out through the atomizing nozzle 224 to react with the exhaust gas. The atomized alkaline water falls through the circular hole 301 on the bottom into the triangular groove 41 inside the water collection box 4 and is discharged through the drain pipe 42 on the left. After the exhaust gas is treated by the alkaline water, it can be sent through the C-shaped pipe 32 on the right to the bottom of the purification box 51. When the exhaust gas rises, it is adsorbed by the activated carbon placed inside the sliding box 531 and then discharged through the exhaust pipe 511 on the upper left. When the activated carbon loses its activity, the horizontal plate 514 is pulled to drive the extension rod 533 to pull out the sliding box 531 for replacement. Finally, it is filled in through the extension port. The above is the complete working principle of this utility model.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tail gas treatment device for safe production of trimethyl phosphite, comprising an operation box (1), characterized in that: A spraying mechanism (2) is installed at the top of the operating box (1). The spraying mechanism (2) includes a placement box (21) and a spraying component (22). The spraying component (22) is installed at the bottom of the placement box (21). The spraying component (22) is installed on the upper side inside the spraying box (3). An air inlet pipe (31) is provided at the left end of the spraying box (3) and extends to the outer side of the left end of the operating box (1). A C-shaped pipe (32) is installed on the right side of the spraying box (3). The bottom side of the operation box (1) is provided with a water collection tank (4). The bottom side of the operation box (1) is equipped with a purification mechanism (5). The purification mechanism (5) includes a purification box (51) and a screen (52). The right end of the purification box (51) is connected to the bottom end of the C-shaped tube (32). The bottom side of the purification box (51) is fixed with a screen (52). The upper side of the screen (52) is provided with a purification component (53). The lower left side of the operation box (1) is equipped with three sets of support plates (6).

2. The tail gas treatment device for safe production of trimethyl phosphite according to claim 1, characterized in that: A partition plate (11) is fixed in the center of the inside of the operation box (1), a water collection tank (4) is installed on the upper side of the partition plate (11), and an extension opening (12) is provided on the lower left wall of the operation box (1).

3. The tail gas treatment device for safe production of trimethyl phosphite according to claim 1, characterized in that: The spray unit (22) includes a water pump (221) and five sets of connecting pipes (222). The water pump (221) is installed inside the top side of the operation box (1) and connected to the bottom side of the placement box (21). The five sets of connecting pipes (222) pass through the top of the spray box (3) and are respectively installed at the top of five sets of porous square pipes (223). Multiple sets of atomizing nozzles (224) are installed at the bottom of each set of porous square pipes (223).

4. The tail gas treatment device for safe production of trimethyl phosphite according to claim 1, characterized in that: Three sets of circular holes (301) are evenly spaced on the bottom side of the inside of the spray box (3), and the three sets of circular holes (301) are perpendicular to the top of the water collection box (4).

5. The tail gas treatment device for safe production of trimethyl phosphite according to claim 1, characterized in that: The water collection tank (4) has a triangular groove (41) inside, and a drain pipe (42) is installed on the left side of the inside of the triangular groove (41) and extends to the outer left side of the operation box (1).

6. The tail gas treatment device for safe production of trimethyl phosphite according to claim 1, characterized in that: An outwardly extending exhaust pipe (511) is installed on the upper left side of the interior of the purification box (51). Slide rails (512) are fixed on both the front and rear walls of the interior of the purification box (51). A square groove (513) is opened on the left wall of the interior of the purification box (51).

7. The tail gas treatment device for safe production of trimethyl phosphite according to claim 1, characterized in that: The purification component (53) includes a sliding box (531), the front end of which slides in a slide rail (512), and a breathable mesh pad (532) is installed at the bottom of the inner side of the sliding box (531). Two sets of extension rods (533) are fixed at the left end of the sliding box (531), and the left ends of the two sets of extension rods (533) are connected and fixed by a cross plate (514).

Images