Manufacturing method of cycloheptanol
Cycloheptanol is an important raw material for the production of chemicals, which is widely used in the fields of pharmaceuticals, pesticides, spices and so on. This article will introduce the manufacturing method of cycloheptanol, including raw material selection, reaction principle, operation steps, equipment requirements and so on.
I. Raw material selection
The raw materials for the manufacture of cycloheptanol are mainly cycloheptanone and hydrogen. Among them, cycloheptanone is a common chemical raw material, which can be obtained through the synthesis of phenol, acetone and other compounds. Hydrogen can be produced by water electrolysis, natural gas and other methods.
II. Reaction Principle
The manufacture of cycloheptanol mainly involves the conversion of cycloheptanone to cycloheptanol through a hydrogenation reduction reaction. Hydrogenation reduction reaction is a reaction in which the unsaturated bonds in an organic compound are reduced to saturated bonds by the addition of hydrogen. In this reaction, the carbonyl group of cycloheptanone is reduced to a hydroxyl group to produce cycloheptanol.
3. Procedure
1. Cycloheptanone is added to the reactor and the stirrer is turned on for uniform dispersion.
2. Admit hydrogen gas, control the reaction temperature in the appropriate range, while maintaining a certain pressure and stirring speed.
3. The pH and alcohol content of the reaction solution need to be constantly monitored during the reaction so that the reaction conditions can be adjusted and the catalyst added in time.
4. When the cycloheptanol content reaches a certain level, the passage of hydrogen is stopped and the reaction solution is cooled to room temperature.
5. Separate the cycloheptanol from the reaction liquid by distillation, extraction, etc. to get pure cycloheptanol product.
4. Equipment Requirements
The manufacture of cycloheptanol requires the use of equipment such as hydrogenation reactors, stirrers, hydrogen compressors, and distillation towers. These equipments need to be corrosion-resistant, high-temperature-resistant and high-pressure-resistant to ensure the safety and stability of the production process.
V. Precautions
1. During the production process, the reaction temperature and pressure need to be strictly controlled to avoid side reactions and safety accidents.
2. Suitable catalysts and additives need to be used to improve reaction efficiency and product quality.
3. Regular maintenance and repair of production equipment and pipelines are needed to ensure smooth and stable production process.
In short, the manufacture of cycloheptanol requires the selection of suitable raw materials and reaction conditions, strict control of the production process, and the use of suitable equipment and catalysts to ensure product quality and production safety.
