Acetylene production system and acetylene carbon black production system
By using an asbestos packing layer to purify acetylene twice in the acetylene production system, the problem of high ash content in acetylene black in existing technologies has been solved, and high-quality production of acetylene black has been achieved.
Patent Information
- Application Number
- CN202423033681.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-09
AI Technical Summary
In existing technologies, when acetylene is purified through desulfurization, dehydrogenation, and dehydration and then used to prepare acetylene black, the ash content of the acetylene black is high, which affects product quality.
An acetylene production system is adopted, including an acetylene purification device. The acetylene is purified twice using an asbestos packing layer. The purification packing layer is set inside the shell. Acetylene is introduced into the purification packing layer through a distributor to remove harmful impurities such as phosphine and hydrogen sulfide. The ash content is reduced when acetylene is subsequently used to produce acetylene carbon black.
The purification treatment of the asbestos filler layer significantly reduces the ash content of acetylene black and improves product quality.
Smart Images
Figure CN223747214U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of chemical technology, especially to an acetylene production system and an acetylene carbon black production system. BACKGROUND
[0002] Acetylene is a commonly used chemical raw material, molecular formula C2H2, commonly known as wind coal and calcium carbide gas, is the smallest member in the acetylene compound series, is used for welding metal and as raw material to participate in chemical organic synthesis, participates in chemical synthesis, generally needs higher purity; Acetylene is a colorless, extremely flammable gas at room temperature.
[0003] The existing acetylene industrial preparation method adopts calcium carbide method, that is, calcium carbide reacts with water to generate acetylene, and the acetylene contains a large amount of impurity gases such as phosphine and hydrogen sulfide. Due to the physicochemical properties of hydrogen sulfide and phosphine, such as flammability, toxicity and strong irritation, the quality of acetylene synthesis products is seriously affected, and purification treatment is required before use. In the prior art, acetylene is purified by desulfurization, dehydrogenation and dehydration. When the acetylene purified by the prior art is used to prepare acetylene carbon black, the ash content of the acetylene carbon black is high. SUMMARY
[0004] Therefore, the utility model provides an acetylene production system and an acetylene carbon black production system to solve the technical problem that the ash content of acetylene carbon black is high when acetylene is purified by desulfurization, dehydrogenation and dehydration and the acetylene purified by the prior art is used to prepare acetylene carbon black.
[0005] The technical scheme for solving the above technical problem is as follows:
[0006] An acetylene production system comprises an acetylene purification device, and the acetylene purification device comprises:
[0007] A shell, two ends of the shell are an acetylene gas inlet end and an acetylene gas outlet end respectively;
[0008] A distributor is arranged in the shell and located at the acetylene gas inlet end;
[0009] Two purification filler layers are arranged in the shell in the direction from the acetylene gas inlet end to the acetylene gas outlet end, and both are located at the side of the distributor away from the acetylene gas inlet end, and the purification filler layer is a stone wool filler layer;
[0010] The acetylene production system further comprises an acetylene reaction tower and a desulfurization and dehydrogenation system, the gas outlet end of the acetylene reaction tower is connected with the acetylene gas inlet end, and the acetylene gas outlet end is connected with the gas inlet end of the desulfurization and dehydrogenation system.
[0011] Preferably, the desulfurization and dehydrogenation system comprises a desulfurization reaction tower, a dehydrogenation reaction tower and a dehydration reaction tower, the acetylene outlet end is connected with the gas inlet end of the desulfurization reaction tower, the gas outlet end of the desulfurization reaction tower is connected with the gas inlet end of the dehydrogenation reaction tower, and the gas outlet end of the dehydrogenation reaction tower is connected with the gas inlet end of the dehydration reaction tower.
[0012] Preferably, the acetylene reaction tower is provided with a pure water feeding pipe and a calcium carbide feeding pipe.
[0013] Preferably, the system further comprises an acetylene storage tank, which is connected with the gas outlet end of the desulfurization and dehydrogenation system.
[0014] An acetylene black production system comprises the acetylene production system.
[0015] Compared with the prior art, the acetylene production system has at least the following advantages:
[0016] The acetylene production system and the acetylene black production system have the following advantages. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the acetylene production system.
[0018] In the drawing: the shell 100, the distributor 110, the purification filler layer 120, the acetylene reaction tower 200, the pure water feeding pipe 210, the calcium carbide feeding pipe 220, the desulfurization reaction tower 300, the dehydrogenation reaction tower 400, the dehydration reaction tower 500, and the acetylene storage tank 510. DETAILED DESCRIPTION
[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0020] Please refer to Figure 1 The application discloses an acetylene purification device, which comprises
[0021] The shell 100 has an acetylene gas inlet end and an acetylene gas outlet end at two ends thereof;
[0022] The distributor 110 is arranged in the shell 100 and located at the acetylene gas inlet end.
[0023] The at least one purification filler layer 120 is arranged in the shell 100 in a direction from the acetylene gas inlet end to the acetylene gas outlet end and located at a side of the distributor 110 away from the acetylene gas inlet end.
[0024] Specifically, acetylene is introduced into the shell 100 through the acetylene gas inlet end, transported to the purification filler layer 120 along the distributor 110, and purified by the purification filler layer 120 arranged in the shell 100, which can be provided with two purification filler layers 120 to purify acetylene twice to remove harmful impurities such as phosphine and hydrogen sulfide in the acetylene, facilitating subsequent reactions. The purified acetylene is transported out of the shell 100 through the acetylene gas outlet end and enters the next process. The acetylene is purified by the purification filler layer 120, and the obtained acetylene carbon black has low ash content and good quality when acetylene is used to prepare acetylene carbon black.
[0025] In a preferred embodiment, the purification filler layer 120 is an asbestos filler layer.
[0026] Specifically, asbestos can be divided into serpentine asbestos and amphibole asbestos, and the amphibole asbestos is divided into blue asbestos, tremolite asbestos, actinolite asbestos, etc. As a preferred embodiment, the asbestos in the present application is preferably blue asbestos. Asbestos has high fire resistance, electrical insulation and thermal insulation, and blue asbestos has good filtering performance, important characteristics such as chemical toxicant resistance and air purification contaminated by radioactive substances. The acetylene is filtered and purified by the asbestos filler layer, and the obtained acetylene carbon black has low ash content and good quality when acetylene is used to prepare acetylene carbon black.
[0027] The application further discloses an acetylene production system comprising the acetylene purification device.
[0028] Since the acetylene is purified by the purification filler layer 120 in the above-mentioned acetylene purification device, the application discloses an acetylene production system comprising the acetylene purification device.
[0029] In a preferred embodiment, the system further comprises an acetylene reaction tower 200 and a desulfurization and dehydrogenation system. The acetylene gas outlet end of the acetylene reaction tower 200 is connected to the acetylene gas inlet end, and the acetylene gas inlet end is connected to the acetylene gas outlet end of the desulfurization and dehydrogenation system.
[0030] Specifically, calcium carbide (calcium carbide) and water are introduced into the acetylene reaction tower 200 to react to generate crude acetylene gas, the crude acetylene gas is introduced into the shell 100 through the acetylene gas inlet end, and is transported to the purification filler layer 120 along the distributor 110, the purification filler layer 120 is arranged in the shell 100 in an interval, the acetylene is purified through the purification filler layer 120, the purification filler layer 120 can be provided with two, and the acetylene is purified twice, the harmful impurities such as phosphine and hydrogen sulfide in the acetylene are purified, the purified acetylene is transported to the desulfurization and dehydrogenation system through the acetylene gas outlet end, the acetylene is desulfurized and dehydrogenated, and the acetylene after desulfurization and dehydrogenation is transported to the next process.
[0031] In a preferred embodiment, the desulfurization and dehydrogenation system comprises a desulfurization reaction tower 300, a dehydrogenation reaction tower 400 and a dehydration reaction tower 500, the acetylene gas outlet end is connected with the gas inlet end of the desulfurization reaction tower 300, the gas outlet end of the desulfurization reaction tower 300 is connected with the gas inlet end of the dehydrogenation reaction tower 400, the gas outlet end of the dehydrogenation reaction tower 400 is connected with the gas inlet end of the dehydration reaction tower 500, and the acetylene reaction tower 200 is provided with a pure water feeding pipe 210 and a calcium carbide feeding pipe 220.
[0032] Specifically, pure water is introduced into the acetylene reaction tower 200 through the pure water feeding pipe 210, calcium carbide (calcium carbide) is introduced into the acetylene reaction tower 200 through the calcium carbide feeding pipe 220, the pure water and the calcium carbide react in the acetylene reaction tower 200 to generate crude acetylene gas, the crude acetylene gas is transported out through the gas outlet end of the acetylene reaction tower 200, is transported into the shell 100 through the acetylene gas inlet end, and is transported to the purification filler layer 120 along the distributor 110, the acetylene is purified by the purification filler layer 120, and the purified acetylene is transported to the desulfurization reaction tower 300 through the acetylene gas outlet end, so that the purified acetylene is desulfurized, the acetylene after desulfurization is transported to the dehydrogenation reaction tower 400 through the gas outlet end of the desulfurization reaction tower 300, the acetylene after desulfurization is dehydrogenated by the dehydrogenation reaction tower 400, the acetylene after dehydrogenation is transported to the dehydration reaction tower 500 through the gas outlet end of the dehydrogenation reaction tower 400, and the acetylene after dehydrogenation is dehydrated by the dehydration reaction tower 500 to obtain acetylene.
[0033] In a preferred embodiment, the desulfurization and dehydrogenation system comprises a desulfurization reaction tower 300, a dehydrogenation reaction tower 400 and a dehydration reaction tower 500, the acetylene gas outlet end is connected with the gas inlet end of the desulfurization reaction tower 300, the gas outlet end of the desulfurization reaction tower 300 is connected with the gas inlet end of the dehydrogenation reaction tower 400, the gas outlet end of the dehydrogenation reaction tower 400 is connected with the gas inlet end of the dehydration reaction tower 500, and the acetylene reaction tower 200 is provided with a pure water feeding pipe 210 and a calcium carbide feeding pipe 220.
[0034] Specifically, the acetylene product after dehydration is transported to the acetylene storage tank 510 through the gas outlet end of the desulfurization and dehydrogenation system for storage.
[0035] The embodiment of the present application also discloses an acetylene carbon black production system comprising the acetylene production system.
[0036] Due to the above-mentioned acetylene production system, the acetylene produced after purification in the above-mentioned acetylene purification device, the embodiment of the application discloses an acetylene carbon black production system, comprising the above-mentioned acetylene production system.
[0037] The utility model will be further described below in combination with specific embodiments.
[0038] I, the small block of calcium carbide raw material with a particle size of 65mm is put into the acetylene generator and reacts with water to generate crude acetylene gas, and the crude acetylene gas is purified by conventional purification means to obtain acetylene A.
[0039] The small block of calcium carbide raw material with a particle size of 65mm is put into the acetylene generator and reacts with water to generate crude acetylene gas, and the crude acetylene gas is purified by the purification means of the application to obtain acetylene B.
[0040] The acetylene A and the acetylene B are respectively introduced into the cracking furnace, wherein the feeding amount of acetylene is ≥4m 3 The cracking temperature of the cracking furnace is 1600℃±50℃, the pressure of the acetylene introduced into the cracking furnace is 10kPa, the temperature is 15℃, the flow rate is 5m 3 / min, the acetylene reacts in the cracking furnace to generate acetylene carbon black and produce tail gas, and after being compressed by pressing, gas-solid separation is carried out to obtain acetylene carbon black, and through detection, the ash content of the acetylene carbon black obtained from acetylene A is 0.23%, and the ash content of the acetylene carbon black obtained from acetylene B is 0.12%.
[0041] It can be seen that after the acetylene is purified by the conventional purification means, the acetylene carbon black is prepared by using the acetylene, and the ash content of the acetylene carbon black detected is 0.23%; after the acetylene is purified by the purification filler layer 120 in the application, the acetylene carbon black is prepared by using the acetylene, and the ash content of the acetylene carbon black detected is 0.12%.
[0042] The above-mentioned is only the preferred embodiment of the utility model, and of course cannot limit the right range of the utility model, and the person skilled in the art can understand that all or part of the processes of the above-mentioned embodiments are realized, and the equivalent changes made according to the utility model claim still belong to the range covered by the utility model.
Claims
1. An acetylene production system, characterized by: The acetylene purification device comprises: a shell, two ends of the shell being an acetylene gas inlet end and an acetylene gas outlet end respectively; a distributor arranged in the shell and located at the acetylene gas inlet end; two purification filler layers, the two purification filler layers being arranged in the shell in a direction from the acetylene gas inlet end to the acetylene gas outlet end and both being located at a side of the distributor away from the acetylene gas inlet end, the purification filler layers being asbestos filler layers; The acetylene production system further comprises an acetylene reaction tower, a desulfurization and dehydrogenation system, an acetylene gas outlet end of the acetylene reaction tower being connected with the acetylene gas inlet end, and the acetylene gas outlet end being connected with a gas inlet end of the desulfurization and dehydrogenation system.
2. The acetylene production system of claim 1, wherein: The desulfurization and dehydrogenation system comprises a desulfurization reaction tower, a dehydrogenation reaction tower and a dehydration reaction tower, the acetylene gas outlet end being connected with a gas inlet end of the desulfurization reaction tower, a gas outlet end of the desulfurization reaction tower being connected with a gas inlet end of the dehydrogenation reaction tower, and a gas outlet end of the dehydrogenation reaction tower being connected with a gas inlet end of the dehydration reaction tower.
3. The acetylene production system of claim 1, wherein: The acetylene reaction tower is provided with a pure water feeding pipe and a calcium carbide feeding pipe.
4. The acetylene production system of claim 1, wherein: The system further comprises an acetylene storage tank connected with a gas outlet end of the desulfurization and dehydrogenation system.
5. An acetylene carbon black production system characterized by: The system comprises the acetylene production system according to any one of claims 1 to 4.