A continuous production reaction device for high-purity acetylene carbon black

Abstract

The utility model relates to a kind of high-purity acetylene carbon black continuous production reaction devices, including acetylene gas purification tank and combustion furnace, its technical key points are: acetylene gas purification tank upper portion is built-in horizontal baffle, acetylene gas purification tank lower portion is equipped with multiple purification cavities side by side, horizontal baffle is equipped with with the gas outlet of one-to-one correspondence with purification cavity, acetylene gas purification tank outer wall lower portion is equipped with gas inlet pipe, gas inlet pipe terminal end inserts and is arranged side by side last purification cavity, gas inlet pipe starting end is equipped with first check valve, gas inlet pipe is equipped with with the first reversing valve of one-to-one correspondence with other purification cavities, acetylene gas purification tank outer wall upper portion is equipped with liquid supplementing pipe, liquid supplementing pipe starting end is equipped with second check valve, liquid supplementing pipe terminal end inserts and is arranged side by side last purification cavity, liquid supplementing pipe is equipped with with the second reversing valve of one-to-one correspondence with other purification cavities.The device guarantees the continuous purification effect to acetylene gas, to guarantee the high purity of product.

Description

Technical Field

[0001] This utility model relates to the technical field of acetylene black production equipment, specifically to a continuous production reaction device for high-purity acetylene black. Background Technology

[0002] Acetylene black is generally produced by the continuous pyrolysis of acetylene obtained through the calcium carbide process. It possesses excellent electrical conductivity and liquid absorption properties, and is primarily used as the negative electrode in nickel-metal hydride batteries. It can also be used as a conductor in supercapacitors. However, the acetylene gas produced by the calcium carbide process typically contains trace amounts of impurities such as phosphine and hydrogen sulfide. Consequently, the resulting acetylene black inevitably contains trace amounts of harmful impurities such as sulfur and phosphorus, severely impacting its electrical conductivity.

[0003] Based on this, CN 112358748 A discloses a method and equipment for producing high-purity acetylene carbon black, which includes an acetylene generator. One side of the acetylene generator is connected to a purification chamber via a connecting pipe. An air pump is installed on one side of the purification chamber, and the air inlet of the air pump is connected to the purification chamber via an exhaust pipe. Acetylene gas is pre-purified using sodium hypochlorite solution in the purification chamber to improve the purity and conductivity of the acetylene carbon black. However, the following problems still exist: during continuous production, the consumption of sodium hypochlorite solution in the purification chamber is large. As the concentration decreases, the purification effect on acetylene gas is greatly reduced. Simultaneously, the amount of solid impurities at the bottom of the purification chamber increases, which is detrimental to the effective purification of acetylene gas. Utility Model Content

[0004] The purpose of this invention is to provide a high-purity acetylene carbon black continuous production reaction device with a reasonable structure and reliable operation that solves the above problems, ensuring continuous purification of acetylene gas and thus guaranteeing the high purity of the product.

[0005] The technical solution of this utility model is:

[0006] A continuous production reactor for high-purity acetylene carbon black includes an acetylene gas purification chamber and a combustion furnace. The key technical features are: a horizontal partition is built into the upper part of the acetylene gas purification chamber; multiple purification chambers are arranged side-by-side in the lower part of the acetylene gas purification chamber; each purification chamber has a cone-shaped bottom with a discharge valve fixed at its lower end; the top of each purification chamber extends to the horizontal partition; the horizontal partition has gas outlets corresponding to each purification chamber; a gas collection chamber is formed between the horizontal partition and the top of the acetylene gas purification chamber; and the upper part of the outer wall of the acetylene gas purification chamber is provided with an insertion point into the gas collection chamber. The acetylene gas purification chamber has an exhaust pipe, and an intake pipe that passes through each purification chamber sequentially on the lower part of the outer wall of the chamber. The end of the intake pipe is inserted into the last purification chamber arranged in parallel. The starting end of the intake pipe is equipped with a first one-way valve, and the intake pipe is equipped with a first reversing valve corresponding to each of the other purification chambers. The upper part of the outer wall of the acetylene gas purification chamber has a liquid replenishment pipe, the starting end of which is equipped with a second one-way valve. The end of the liquid replenishment pipe is inserted into the last purification chamber arranged in parallel, and the liquid replenishment pipe is equipped with a second reversing valve corresponding to each of the other purification chambers.

[0007] In the aforementioned continuous production reactor for high-purity acetylene black, the exhaust pipe is connected to the raw material inlet of the combustion furnace via a connecting pipe, and an air pump is installed on the connecting pipe.

[0008] In the above-mentioned continuous production reactor for high-purity acetylene carbon black, a liquid collection tank is connected below the discharge valve of each of the purification chambers. The liquid collection tank has a liquid outlet pipe on its side wall and a slag discharge port at its bottom.

[0009] In the aforementioned continuous production reactor for high-purity acetylene black, the purification chamber is provided with multiple horizontal baffles spaced from top to bottom, forming a continuous S-shaped channel, and the air inlet pipe is located below the continuous S-shaped channel.

[0010] The beneficial effects of this utility model are:

[0011] Before entering the combustion furnace, acetylene gas is first purified in an acetylene gas purification chamber. After purification in one chamber for a period of time, the concentration of the purification solution in that chamber decreases, making further purification difficult. Therefore, the acetylene gas is injected into an adjacent second purification chamber through the first reversing valve, and the purification operation is performed through the second purification chamber. In this way, the gas is purified sequentially through each purification chamber without relying on a single chamber. After the purification operation in a purification chamber is completed, the gas is discharged through a discharge valve, and then replenished using a replenishment pipe and the second reversing valve. This ensures continuous purification of the acetylene gas, does not delay the reaction operation of the entire reaction device, and also ensures the high purity of the product. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the acetylene gas purification box of this utility model.

[0014] In the diagram: 1. Acetylene gas purification box, 2. Connecting pipeline, 3. Gas pump, 4. Combustion furnace, 5. Inlet pipe, 6. First one-way valve, 7. Horizontal baffle, 8. Horizontal partition, 9. Gas outlet, 10. Gas collection chamber, 11. Exhaust pipe, 12. Second reversing valve, 13. Liquid replenishment pipe, 14. Second one-way valve, 15. Purification chamber, 16. First reversing valve, 17. Liquid outlet pipe, 18. Discharge valve, 19. Liquid collection tank, 20. Slag discharge port. Detailed Implementation

[0015] The present invention will be described in detail with reference to the accompanying drawings.

[0016] like Figure 1 , Figure 2 As shown, the continuous production reactor for high-purity acetylene carbon black includes an acetylene gas purification chamber 1 and a combustion furnace 4.

[0017] The acetylene gas purification chamber 1 has a horizontal partition 8 built into its upper part, and multiple purification chambers 15 are arranged side by side at the lower part of the acetylene gas purification chamber 1. The bottom of each purification chamber 15 is cone-shaped and a discharge valve 18 is fixed at the lower end. In this embodiment, a liquid collection tank 19 is connected below the discharge valve 18 of each purification chamber 15. A liquid outlet pipe 17 is provided on the side wall of the liquid collection tank 19, and a slag discharge port 20 is provided at the bottom of the liquid collection tank 19.

[0018] The top of the purification chamber 15 extends to a horizontal partition 8, and the horizontal partition 8 is provided with air outlets 9 corresponding to the purification chamber 15. A gas collection chamber 10 is formed between the horizontal partition 8 and the top of the acetylene gas purification box 1, and an exhaust pipe 11 inserted into the gas collection chamber 10 is provided on the upper part of the outer wall of the acetylene gas purification box 1. In this embodiment, the exhaust pipe 11 is connected to the raw material inlet of the combustion furnace 4 via a connecting pipe 2, and an air pump 3 is provided on the connecting pipe 2.

[0019] The lower part of the outer wall of the acetylene gas purification chamber 1 is provided with an inlet pipe 5 that passes through each purification chamber 15 in sequence. The end of the inlet pipe 5 is inserted into the last purification chamber 15 arranged in parallel. The starting end of the inlet pipe 5 is provided with a first one-way valve 6, and the inlet pipe 5 is provided with a first reversing valve 16 corresponding to each of the other purification chambers 15. The upper part of the outer wall of the acetylene gas purification chamber 1 is provided with a liquid replenishment pipe 13. The starting end of the liquid replenishment pipe 13 is provided with a second one-way valve 14, and the end of the liquid replenishment pipe 13 is inserted into the last purification chamber 15 arranged in parallel. The liquid replenishment pipe 13 is provided with a second reversing valve 12 corresponding to each of the other purification chambers 15. Multiple horizontal baffles 7 are arranged at intervals from top to bottom inside the purification chamber 15, and the horizontal baffles 7 form a continuous S-shaped channel. The inlet pipe 5 is located below the continuous S-shaped channel.

[0020] Working principle:

[0021] 1. Before entering the combustion furnace 4, the acetylene gas first enters the acetylene gas purification chamber 1 for pre-purification. Purification is first performed in the first purification chamber 15 on the left. The first reversing valve 16 in the first purification chamber 15 introduces the acetylene gas into its respective purification chamber 15. The acetylene gas moves from bottom to top in a continuous S-shaped channel. During this process, it is purified by the purification solution within. Finally, the acetylene gas is discharged from the outlet 9 to the gas collection chamber 10, and then discharged to the combustion furnace 4 through the exhaust pipe 11 and the gas pump 3.

[0022] 2. After purification in the first purification chamber 15 for a period of time, the concentration of the purification solution in the purification chamber 15 decreases, the first reversing valve 16 in the first purification chamber 15 reverses, and the first reversing valve 16 in the second purification chamber 15 introduces acetylene gas into its own purification chamber 15, and the purification operation is carried out using the second purification chamber 15.

[0023] 3. During this process, the purified solution in the first purification chamber 15 is discharged into the collection tank 19 through the discharge valve 18, and then the new purified solution is replenished into the first purification chamber 15 through the replenishment pipe 13. The various second reversing valves 12 on the replenishment pipe 13 are used for replenishment switching.

[0024] 4. After the second purification chamber 15 completes the gas purification for the set time, acetylene gas is introduced into the third purification chamber 15 under the direction switching action of the first reversing valve 16, while the purification liquid in the second purification chamber 15 is also replaced. This process is repeated.

[0025] 5. Once the solution in the collection tank 19 has accumulated to a certain level, it is introduced into the recycling system via the outlet pipe 17 and the pump. Solid impurities deposited at the bottom of the collection tank 19 can be discharged through the slag discharge port 20.

[0026] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A continuous production reactor for high-purity acetylene carbon black, comprising an acetylene gas purification chamber and a combustion furnace, characterized in that: The acetylene gas purification chamber has a horizontal partition built into its upper part. Multiple purification chambers are arranged side-by-side at the lower part of the acetylene gas purification chamber. Each purification chamber has a cone-shaped bottom with a discharge valve fixed at its lower end. The top of each purification chamber extends to the horizontal partition, which has an outlet corresponding to each purification chamber. A gas collection chamber is formed between the horizontal partition and the top of the acetylene gas purification chamber. An exhaust pipe inserted into the gas collection chamber is located on the upper part of the outer wall of the acetylene gas purification chamber. An inlet pipe passing through each purification chamber sequentially is located on the lower part of the outer wall of the acetylene gas purification chamber. The end of the inlet pipe is inserted into the last purification chamber arranged in parallel. A first one-way valve is located at the beginning of the inlet pipe, and a first reversing valve corresponding to each of the other purification chambers is located on the inlet pipe. A liquid replenishment pipe is located on the upper part of the outer wall of the acetylene gas purification chamber. A second one-way valve is located at the beginning of the liquid replenishment pipe, and the end of the liquid replenishment pipe is inserted into the last purification chamber arranged in parallel. A second reversing valve corresponding to each of the other purification chambers is located on the liquid replenishment pipe.

2. The continuous production reactor for high-purity acetylene black according to claim 1, characterized in that: The exhaust pipe is connected to the raw material inlet of the combustion furnace via a connecting pipe, and an air pump is installed on the connecting pipe.

3. The continuous production reactor for high-purity acetylene black according to claim 1, characterized in that: Each of the purification chambers is connected to a common liquid collection tank below its unloading valve. The liquid collection tank has an outlet pipe on its side wall and a slag discharge port at its bottom.

4. The continuous production reactor for high-purity acetylene black according to claim 1, characterized in that: The purification chamber is provided with multiple horizontal baffles spaced from top to bottom, and each horizontal baffle forms a continuous S-shaped channel. The air intake pipe is located below the continuous S-shaped channel.

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