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環己胺的生產工藝技術及技術路線選擇

發布來源:http://www.elisabethmoss.net    更新時間:2023-06-20 點擊數:

目前,世界上主要有六種環己胺制備方法,即苯胺催化加氫常壓法和加壓法、硝基環己烷還原法、氯代環己烷催化氨解法、環己烯直接氨化法、環己酮催化氨化法、環己醇催化氨化法。
At present, there are six main preparation methods of Cyclohexylamine in the world, namely, aniline catalytic hydrogenation under normal pressure and pressure, Nitrocyclohexane reduction, chlorocyclohexane catalytic ammoniation, Cyclohexene direct ammoniation, Cyclohexanone catalytic ammoniation, Cyclohexanol catalytic ammoniation.
環己胺生產工藝路線有四條,即苯胺加氫還原法、環己醇催化氨化法、環己酮催化氨化法、硝基環己烷還原法;目前世界上主要工業化方法是前兩條路線,不同國家因為原料價格不一樣,而選擇不同的原料路線。
There are four production processes of Cyclohexylamine, namely, aniline hydrogenation reduction, Cyclohexanol catalytic ammoniation, Cyclohexanone catalytic ammoniation, and Nitrocyclohexane reduction; At present, the main industrialization methods in the world are the first two routes, and different countries choose different raw material routes due to different raw material prices.
我國一般采用苯胺催化加氫合成環己胺,同時聯產二環己胺,根據反應條件和催化劑不同,可以得到不同比例的環己胺和二環己胺,若不刻意調節,一般可以副產得到10%左右的二環己胺。
In China, aniline catalytic hydrogenation is generally used to synthesize Cyclohexylamine, and Dicyclohexylamine is co produced. According to different reaction conditions and catalysts, different proportions of Cyclohexylamine and Dicyclohexylamine can be obtained. If no deliberate adjustment is made, about 10% of Dicyclohexylamine can be produced by by-product.
苯胺催化加氫常壓法和加壓法
Aniline catalytic hydrogenation under atmospheric and pressurized conditions
苯胺催化加氫制取環己胺與二環己胺的催化劑以主要活性元素分類,可分為鈷系、釕系、鎳系和鈀系等四類。
The catalysts for the catalytic hydrogenation of aniline to Cyclohexylamine and Dicyclohexylamine can be classified into cobalt, ruthenium, nickel and palladium based on the main active elements.
環己胺
硝基環己烷催化氨化法
Catalytic ammoniation of Nitrocyclohexane
硝基環己烷原料不易得,很少有資料報道。
The raw material of Nitrocyclohexane is not easy to obtain, and there are few data reports.
氯代環己烷催化氨解法
Catalytic ammonolysis of chlorocyclohexane
氯代環己烷雖然原料不難得到,但工藝路線拉長,且生成物中有氯化氫,對設備的要求也很高,報道資料很少。
Although the raw materials for chlorocyclohexane are not difficult to obtain, the process route is elongated, and hydrogen chloride is present in the product, requiring high equipment requirements. There are few reported materials.
環己烯直接氨化法
Direct ammoniation of Cyclohexene
以β-沸石為催化劑,NH3:C6H10=1.5,在壓力55MPa,溫度300℃工藝條件下,反應時間16小時,環己胺的單程收率為7.1%,故收率很低。但環己烯直接氨化法還存在著轉化率低、設備利用率不高,反應條件要求比較高的缺點。
with β- With zeolite as catalyst, NH3: C6H10=1.5, under the process condition of 55MPa pressure and 300 ℃ temperature, the reaction time is 16 hours, and the single pass yield of Cyclohexylamine is 7.1%, so the yield is very low. However, the direct ammoniation of Cyclohexene still has the disadvantages of low conversion rate, low utilization rate of equipment and high requirements for reaction conditions.
環己胺的生產工藝技術及技術路線選擇相關內容就講解到這里了,希望能夠給您好的幫助,還有幾個線路選擇可以來網站http://www.elisabethmoss.net看看!
The production process technology of Cyclohexylamine and the selection of Technology roadmap have been explained here. I hope it can help you. There are several other route options available on the website http://www.elisabethmoss.net Look!

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