2,3-Dimethylbutanol (2,3-DMB) is an important raw material for the production of chemicals, which is widely used in the fields of fine chemicals, pharmaceuticals and pesticides. This article will introduce the manufacturing method of 2,3-Dimethylbutanol, including raw material selection, reaction principle, process flow, equipment selection and other aspects.
I. Raw material selection
The raw materials for the manufacture of 2,3-dimethylbutanol are mainly acetone, hydrogen and methanol. Among them, acetone is a common organic solvent, hydrogen as a reducing agent and methanol as an alcoholizing agent. All of these raw materials are relatively easy to obtain and relatively inexpensive.
II. Reaction Principle
The manufacture of 2,3-dimethylbutanol is mainly accomplished by two steps, the hydrogenation reduction reaction of acetone and the alcoholization reaction. The specific reaction principle is as follows:
1. Hydrogenation reduction reaction: acetone generates 2-propanol through hydrogenation reduction reaction under the action of hydrogen.
2. Alcoholization reaction: 2-propanol and methanol under the action of acid catalyst, alcoholization reaction to generate 2,3-dimethylbutanol and water.
Three, process flow
2,3-dimethylbutanol manufacturing process mainly includes the following steps:
1. acetone hydrogenation reduction: acetone and hydrogen mixed in a certain proportion, into the hydrogenation reactor, under the action of the catalyst to carry out the hydrogenation reduction reaction to generate 2-propanol.
2. Alcoholization reaction: 2-propanol and methanol are mixed according to a certain proportion, add acid catalyst, and enter the alcoholization reactor to carry out the alcoholization reaction to produce 2,3-dimethylbutanol and water.
3. Distillation and separation: the product of alcoholization reaction is distilled and separated to get 2,3-dimethylbutanol and water.
Four, equipment selection
In the manufacturing process of 2,3-dimethylbutanol, it is necessary to use hydrogenation reactor, alcoholization reactor, distillation tower and other equipment. When choosing these equipments, it is necessary to make a comprehensive consideration according to the production scale, product quality, safety and environmental protection and other factors, and choose the appropriate equipment type and material.
V. Operation points
In the manufacturing process of 2,3-dimethylbutanol, the following operation points need to be noted:
1. Control the proportion of raw materials and reaction temperature, pressure and other parameters to ensure that the reaction is carried out smoothly.
2. The selection and use of catalyst should be appropriate to ensure the selectivity and efficiency of the reaction.
3. Control the temperature and pressure and other parameters when distilling and separating to ensure product quality and yield.
4. Enhance the maintenance and upkeep of the equipment to ensure the normal operation and service life of the equipment.
All in all, the manufacture of 2,3-dimethylbutanol needs to master the selection of raw materials, reaction principle, process flow, equipment selection, etc., and at the same time, strengthen the operation management and safety and environmental protection work, in order to ensure the smooth progress of production and stable improvement of product quality.
