Tail gas dechlorination device for chlorinated paraffin preparation and production

Abstract

The utility model discloses a tail gas dechlorination device for chlorinated paraffin preparation and production, including the fermentation tank of alkali solution storage in the inner chamber bottom, one side of the fermentation tank inner chamber is fixedly connected with the heat exchange bucket, the inner chamber of heat exchange bucket is provided with the heat exchange cylinder, the bottom end of heat exchange cylinder extends to the bottom of fermentation tank inner chamber, the inner chamber of heat exchange cylinder rotatably is provided with first rotating link, the utility model relates to paraffin tail gas dechlorination technical field. The tail gas dechlorination device for chlorinated paraffin preparation and production, through secondary purification process, second rotating link rotation drives the rotation of the stirring vane, can agitate the alkali solution in the fermentation tank inner chamber, and then the smaller steam pocket is secondary broken, forms the tiny steam pocket, and then improves the contact area of tail gas and alkali solution, and then improves the purification quality to the tail gas, is favorable to the production and processing use of chlorinated paraffin, improves the environmental protection of chlorinated paraffin production and processing tail gas emission.

Description

Technical Field

[0001] This utility model relates to the field of paraffin tail gas dechlorination technology, specifically a tail gas dechlorination device for the preparation and production of chlorinated paraffin. Background Technology

[0002] Chlorinated paraffin is an organic compound, a chlorinated derivative of paraffin hydrocarbons, and can be used as a flame retardant and an auxiliary plasticizer for polyvinyl chloride. During the production of paraffin, a large amount of hydrogen chloride gas and unreacted chlorine gas are generated. Because chlorine gas is very dangerous to the human body, existing paraffin production requires the use of exhaust gas treatment equipment to purify these heat-treated exhaust gases. The purification process generally involves introducing the paraffin exhaust gas into an alkaline solution for dechlorination. This process creates a steam trap inside the alkaline solution, which in turn prevents the alkaline solution from purifying part of the paraffin exhaust gas.

[0003] Chinese patent CN220310125U discloses a device for dechlorinating the tail gas of chlorinated paraffin preparation. This technical solution uses a water pump to draw alkaline solution from inside the tank through a water pumping pipe and introduce it into the interior of a spray block for circulating spraying. The alkaline solution sprayed by the spray block breaks the steam drum, allowing the sprayed alkaline solution to react with the paraffin tail gas in the steam drum for purification. The purified solution then flows through the gap between the baffle and the spray block to the replenishment pipe for discharge, thus achieving a more thorough dechlorination of the paraffin tail gas. This device avoids the situation where the steam drum blocks the alkaline solution from purifying part of the paraffin tail gas.

[0004] However, the dechlorination device for the tail gas of the chlorinated paraffin preparation and production process does not have the function of breaking up the steam drum during use. This results in a large steam drum in the alkaline solution, which reduces the contact area between the tail gas and the alkaline solution, thereby reducing the purification quality of the tail gas and making it unfavorable for the dechlorination and purification of chlorinated paraffin tail gas. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a tail gas dechlorination device for the preparation and production of chlorinated paraffin, which solves the problem that the tail gas dechlorination device for the preparation and production of chlorinated paraffin does not have a steam drum crushing function during use, resulting in a large steam drum in the alkaline solution.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a dechlorination device for tail gas in the preparation and production of chlorinated paraffin, comprising a fermenter with an alkaline solution stored at the bottom of its inner cavity, a heat exchange tank fixedly connected to one side of the inner cavity of the fermenter, a heat exchange cylinder provided in the inner cavity of the heat exchange tank, the bottom end of the heat exchange cylinder extending to the bottom of the inner cavity of the fermenter, a first rotating rod rotatably provided in the inner cavity of the heat exchange cylinder, and a plurality of cutting blades fixedly connected to the surface of the first rotating rod;

[0007] A second rotating rod is rotatably mounted on the other side of the bottom of the inner wall of the fermentation tank. Several stirring blades are fixedly connected to the surface of the second rotating rod. A transmission mechanism that simultaneously drives the first rotating rod and the second rotating rod is provided at the bottom of the fermentation tank.

[0008] Furthermore, a water injection pipe communicating with the inner cavity of the heat exchange tank is provided on the upper part of the side wall of the fermentation tank, and a drain pipe communicating with the inner cavity of the heat exchange tank is provided on the lower part of the side wall of the fermentation tank.

[0009] Furthermore, the top of the side wall of the fermenter is provided with an air injection pipe that communicates with the top of the heat exchange cylinder, and a number of heat exchange fins are fixedly connected to the surface of the heat exchange cylinder.

[0010] Furthermore, a drain pipe is provided at the bottom of the side wall of the fermentation tank, and a replenishment pipe is connected to the top of the side wall of the fermentation tank. Both the drain pipe and the replenishment pipe are equipped with valves.

[0011] Furthermore, a liquid pump is fixedly connected to the bottom of the side wall of the fermenter, the inlet pipe of the liquid pump extends to the bottom of the inner cavity of the fermenter, a spray plate is fixedly connected to the top of the inner wall of the fermenter, the outlet pipe of the liquid pump is connected to a guide pipe, and the other end of the guide pipe is connected to the spray plate.

[0012] Furthermore, the transmission mechanism includes a transmission box, a motor, and a drive gear. The transmission box is fixedly connected to the bottom of the fermentation tank, the motor is fixedly connected to the bottom of the transmission box, the output shaft of the motor extends rotatably into the inner cavity of the transmission box, the drive gear is fixedly connected to the output shaft of the motor, and the bottom ends of the second rotating rod and the first rotating rod both extend into the inner cavity of the transmission box and are fixedly connected to a driven gear that meshes with the drive gear.

[0013] Furthermore, the top of the front side of the fermentation tank is connected to 21, and a dustproof net is provided on the front side of 21.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: After injecting tail gas into the inner cavity of the heat exchange cylinder, the tail gas comes into contact with the alkaline solution in the inner cavity of the heat exchange cylinder for initial neutralization and purification. After the first rotating rod rotates, it drives multiple cutting blades to rotate, which can cut and break the steam drum in the inner cavity of the heat exchange cylinder to form smaller steam drums. The steam drums that have been broken in the first stage enter the bottom of the inner cavity of the fermentation tank for secondary neutralization and purification. During the secondary purification process, the second rotating rod rotates, which drives the stirring blades to rotate, which can stir the alkaline solution in the inner cavity of the fermentation tank, thereby breaking the smaller steam drums in the second stage to form micro steam drums. This increases the contact area between the tail gas and the alkaline solution, thereby improving the purification quality of the tail gas, which is beneficial to the production and processing of chlorinated paraffin and improves the environmental friendliness of the tail gas emissions from the production and processing of chlorinated paraffin. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the liquid pump and guide tube in this utility model;

[0017] Figure 3 This is a front sectional view of the present invention.

[0018] In the diagram: 1. Fermentation tank; 2. Transmission box; 3. Heat exchange tank; 4. Heat exchange cylinder; 5. Gas injection pipe; 6. Water injection pipe; 7. Drain pipe; 8. Heat exchange fins; 9. First rotating rod; 10. Driven gear; 11. Cutting blade; 12. Motor; 13. Drive gear; 14. Second rotating rod; 15. Stirring blade; 16. Sewage pipe; 17. Liquid replenishment pipe; 18. Liquid pump; 19. Guide pipe; 20. Spray plate; 21. Exhaust pipe; 22. Dustproof net. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-3 This utility model provides a technical solution: a tail gas dechlorination device for the preparation and production of chlorinated paraffin, including a fermenter 1 with an alkaline solution stored at the bottom of the inner cavity, a heat exchange tank 3 fixedly connected to one side of the inner cavity of the fermenter 1, and a heat exchange cylinder 4 provided in the inner cavity of the heat exchange tank 3.

[0021] The bottom end of the heat exchange cylinder 4 extends to the bottom of the inner cavity of the fermenter 1. The inner cavity of the heat exchange cylinder 4 is rotatably provided with a first rotating rod 9, and several cutting blades 11 are fixedly connected to the surface of the first rotating rod 9.

[0022] A second rotating rod 14 is rotatably mounted on the other side of the bottom of the inner wall of the fermentation tank 1. Several stirring blades 15 are fixedly connected to the surface of the second rotating rod 14. A transmission mechanism that simultaneously drives the first rotating rod 9 and the second rotating rod 14 is provided at the bottom of the fermentation tank 1.

[0023] After the exhaust gas is injected into the inner cavity of the heat exchange cylinder 4, the exhaust gas comes into contact with the alkaline solution in the inner cavity of the heat exchange cylinder 4 for initial neutralization and purification. After the first rotating rod 9 rotates and drives multiple cutting blades 11 to rotate, the steam drum can be cut and broken in the inner cavity of the heat exchange cylinder 4 to form a smaller steam drum.

[0024] The initially crushed steam drums enter the bottom of the inner cavity of fermenter 1 for secondary neutralization and purification. During the secondary purification process, the second rotating rod 14 rotates, driving the stirring blade 15 to rotate, which stirs the alkaline solution in the inner cavity of fermenter 1, thereby further crushing the smaller steam drums to form micro steam drums.

[0025] Increasing the contact area between exhaust gas and alkaline solution improves the purification quality of exhaust gas, which is beneficial for the production, processing and use of chlorinated paraffin, and enhances the environmental friendliness of exhaust gas emissions from chlorinated paraffin production and processing.

[0026] A water injection pipe 6 is provided on the upper part of the side wall of fermenter 1, which is connected to the inner cavity of heat exchange tank 3, and a drain pipe 7 is provided on the lower part of the side wall of fermenter 1, which is connected to the inner cavity of heat exchange tank 3.

[0027] After water is injected into the inner cavity of the heat exchange tank 3 through the water injection pipe 6, the water entering the inner cavity of the heat exchange tank 3 can be heated through the heat transfer of the heat exchange tank 4, which facilitates the recovery of residual heat in the exhaust gas. The heated water can be discharged through the drain pipe 7. Both the water injection pipe 6 and the drain pipe 7 are equipped with valves.

[0028] The top of the side wall of the fermenter 1 is provided with an air injection pipe 5 that communicates with the top of the heat exchange cylinder 4. Several heat exchange fins 8 are fixedly connected to the surface of the heat exchange cylinder 4. The heat exchange fins 8 increase the contact area between the heat exchange cylinder 4 and the water flow, thereby improving the heating effect on the water flow.

[0029] A drain pipe 16 is provided at the bottom of the side wall of fermenter 1, and a replenishment pipe 17 is connected to the top of the side wall of fermenter 1. Both the drain pipe 16 and the replenishment pipe 17 are equipped with valves. The replenishment pipe 17 facilitates the addition of alkaline solution to the inner cavity of fermenter 1.

[0030] A liquid pump 18 is fixedly connected to the bottom of the side wall of the fermenter 1. The inlet pipe of the liquid pump 18 extends to the bottom of the inner cavity of the fermenter 1. A spray plate 20 is fixedly connected to the top of the inner wall of the fermenter 1. The outlet pipe of the liquid pump 18 is connected to a guide pipe 19. The other end of the guide pipe 19 is connected to the spray plate 20.

[0031] After the liquid pump 18 starts working, it can draw the alkaline solution from the inner cavity of the fermenter 1 and inject it into the inner cavity of the spray plate 20 through the guide pipe 19. After being diverted by several nozzles on the spray plate 20, it is sprayed out, thereby performing a third neutralization treatment on the tail gas after the second neutralization, which improves the treatment effect of the tail gas. The tail gas after treatment can be discharged through the liquid replenishment pipe 17.

[0032] The transmission mechanism includes a transmission box 2, a motor 12, and a drive gear 13. The transmission box 2 is fixedly connected to the bottom of the fermentation tank 1, and the motor 12 is fixedly connected to the bottom of the transmission box 2.

[0033] The output shaft of motor 12 extends rotatably into the inner cavity of transmission box 2. The drive gear 13 is fixedly connected to the output shaft of motor 12. The bottom ends of the second rotating rod 14 and the first rotating rod 9 both extend into the inner cavity of transmission box 2 and are fixedly connected to the driven gear 10 that meshes with the drive gear 13.

[0034] After the motor 12 starts working, it can drive the drive gear 13 to rotate. Then, through the transmission of the two driven gears 10, it can simultaneously drive the second rotating rod 14 and the first rotating rod 9 to rotate.

[0035] An exhaust pipe 21 is connected to the top of the front side of the fermentation tank 1, and a dustproof net 22 is installed on the front side of the exhaust pipe 21.

[0036] During operation, after the exhaust gas is injected into the inner cavity of the heat exchange cylinder 4, the exhaust gas comes into contact with the alkaline solution in the inner cavity of the heat exchange cylinder 4 for initial neutralization and purification. After the first rotating rod 9 rotates, it drives multiple cutting blades 11 to rotate, which can cut and break the steam drum in the inner cavity of the heat exchange cylinder 4 to form smaller steam drums. The steam drums that have been broken in the first stage enter the bottom of the inner cavity of the fermenter 1 for secondary neutralization and purification. During the secondary purification process, the second rotating rod 14 rotates, which drives the stirring blades 15 to rotate, which can stir the alkaline solution in the inner cavity of the fermenter 1, thereby breaking the smaller steam drums in the second stage to form micro steam drums, thereby increasing the contact area between the exhaust gas and the alkaline solution, and thus improving the purification quality of the exhaust gas.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tail gas dechlorination device for the preparation and production of chlorinated paraffin, comprising a fermenter (1) with an alkaline solution stored at the bottom of its inner cavity, characterized in that: A heat exchange barrel (3) is fixedly connected to one side of the inner cavity of the fermenter (1). A heat exchange cylinder (4) is provided in the inner cavity of the heat exchange barrel (3). The bottom end of the heat exchange cylinder (4) extends to the bottom of the inner cavity of the fermenter (1). A first rotating rod (9) is rotatably provided in the inner cavity of the heat exchange cylinder (4). Several cutting blades (11) are fixedly connected to the surface of the first rotating rod (9). A second rotating rod (14) is rotatably arranged on the other side of the bottom of the inner wall of the fermentation tank (1). Several stirring blades (15) are fixedly connected to the surface of the second rotating rod (14). A transmission mechanism that simultaneously drives the first rotating rod (9) and the second rotating rod (14) is provided at the bottom of the fermentation tank (1).

2. The tail gas dechlorination device for the preparation and production of chlorinated paraffin according to claim 1, characterized in that: The upper part of the side wall of the fermenter (1) is provided with a water injection pipe (6) that communicates with the inner cavity of the heat exchange tank (3), and the lower part of the side wall of the fermenter (1) is provided with a drain pipe (7) that communicates with the inner cavity of the heat exchange tank (3).

3. The tail gas dechlorination device for the preparation and production of chlorinated paraffin according to claim 1, characterized in that: The top of the side wall of the fermenter (1) is provided with an air injection pipe (5) that communicates with the top of the heat exchange cylinder (4), and a number of heat exchange fins (8) are fixedly connected to the surface of the heat exchange cylinder (4).

4. The tail gas dechlorination device for the preparation and production of chlorinated paraffin according to claim 1, characterized in that: A drain pipe (16) is provided at the bottom of the side wall of the fermentation tank (1), and a replenishment pipe (17) is connected to the top of the side wall of the fermentation tank (1). Both the drain pipe (16) and the replenishment pipe (17) are equipped with valves.

5. The tail gas dechlorination device for the preparation and production of chlorinated paraffin according to claim 1, characterized in that: A liquid pump (18) is fixedly connected to the bottom of the side wall of the fermentation tank (1). The inlet pipe of the liquid pump (18) extends to the bottom of the inner cavity of the fermentation tank (1). A spray plate (20) is fixedly connected to the top of the inner wall of the fermentation tank (1). The outlet pipe of the liquid pump (18) is connected to a guide pipe (19). The other end of the guide pipe (19) is connected to the spray plate (20).

6. The tail gas dechlorination device for the preparation and production of chlorinated paraffin according to claim 1, characterized in that: The transmission mechanism includes a transmission box (2), a motor (12), and a drive gear (13). The transmission box (2) is fixedly connected to the bottom of the fermentation tank (1). The motor (12) is fixedly connected to the bottom of the transmission box (2). The output shaft of the motor (12) extends rotatably into the inner cavity of the transmission box (2). The drive gear (13) is fixedly connected to the output shaft of the motor (12). The bottom ends of the second rotating rod (14) and the first rotating rod (9) both extend into the inner cavity of the transmission box (2) and are fixedly connected to a driven gear (10) that meshes with the drive gear (13).

7. The tail gas dechlorination device for the preparation and production of chlorinated paraffin according to claim 1, characterized in that: The top of the front side of the fermenter (1) is connected to 21, and a dustproof net (22) is provided on the front side of the 21.

Images