二氯乙基铝生产工艺
英文回答:
EDC Process.
The EDC process is a chemical process for the production of ethylene dichloride (EDC), a key intermediate in the production of polyvinyl chloride (PVC). The process involves the reaction of ethylene with chlorine in the presence of a catalyst, typically a metal chloride such as ferric chloride (FeCl3). The reaction takes place in a reactor, typically a bubble column or a fluidized bed reactor, at a temperature of around 250-300°C and a pressure of around 1-2 bar.
The EDC process is a highly exothermic reaction, and the heat generated must be removed to prevent the temperature from rising too high. This is typically done by circulating a coolant through the reactor jacket. The reaction products are then cooled and separated in a distillation column, with the EDC product being collected at the top of the column and the unreacted ethylene and chlorine being recycled to the reactor.
The EDC process is a relatively simple and efficient process, and it is the most widely used method for the production of EDC. The process has been in commercial use for over 50 years, and it has been continuously improved over time to increase efficiency and reduce costs.
Oxychlorination Process.
The oxychlorination process is another chemical process for the production of EDC. This process involves the reaction of ethylene with hydrogen chloride (HCl) and oxygen in the presence of a catalyst, typically a copper chloride catalyst. The reaction takes place in a reactor, typically a fixed bed reactor, at a temperature of around 250-300°C and a pressure of around 1-2 bar.
The oxychlorination process is a less exothermic reaction than the EDC process, and the heat generated can be more easily controlled. This allows the reaction to be carried out at a higher temperature, which results in a higher conversion of ethylene to EDC. The reaction products are then cooled and separated in a distillation column, with the EDC prod
uct being collected at the top of the column and the unreacted ethylene, HCl, and oxygen being recycled to the reactor.
The oxychlorination process is a more complex process than the EDC process, but it can achieve a higher conversion of ethylene to EDC. The process is also more environmentally friendly, as it does not produce any by-products. However, the oxychlorination process is more expensive to operate than the EDC process, and it is not as widely used.
中文回答:
EDC工艺。
EDC工艺是生产二氯乙烷(EDC)的一种化学工艺,二氯乙烷是生产聚氯乙烯(PVC)的关键中间体。该工艺涉及在催化剂(通常是氯化铁(FeCl3)等金属氯化物)存在下,乙烯与氯反应。反应在反应器中进行,通常是鼓泡 колон 或流化床反应器,温度约为250-300°C,压力约为1-2 bar。
EDC工艺是一个高度放热反应,必须去除产生的热量以防止温度升高过高。这通常通过在
反应器夹套中循环冷却剂来完成。然后在精馏塔中冷却并分离反应产物,EDC产物收集在塔顶,未反应的乙烯和氯循环回到反应器中。
EDC工艺是一个相对简单且高效的工艺,它是生产EDC最广泛使用的方法。该工艺已商业化使用50多年,并且随着时间的推移不断改进以提高效率并降低成本。
氧氯化工艺。
氧氯化工艺是生产EDC的另一种化学工艺。该工艺涉及在催化剂(通常是氯化铜催化剂)存在下,乙烯与氯化氢(HCl)和氧气反应。反应在反应器中进行,通常是固定床反应器,温度约为250-300°C,压力约为1-2 bar。
氧氯化工艺比EDC工艺放热反应更小,产生的热量更容易控制。这使得反应可以在更高的温度下进行,这导致乙烯转化为EDC的转化率更高。然后在精馏塔中冷却并分离反应产物,EDC产物收集在塔顶,未反应的乙烯、HCl和氧气循环回到反应器中。
氧氯化工艺比EDC工艺复杂,但它可以实现更高的乙烯转化为EDC的转化率。该工艺也更环保,因为它不产生任何副产品。然而,氧氯化工艺的运行成本高于EDC工艺,而且应用也
不如EDC工艺广泛。reactor then
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