Manufacturing method of diisobutylene
I. INTRODUCTION
Diisobutylene is an important raw material for the production of chemicals, which is widely used in the fields of fine chemicals, plastics, rubber and pharmaceuticals. With the continuous development of science and technology, the manufacturing method of diisobutene is being improved and optimized. This paper will introduce the manufacturing method of diisobutylene, including raw material selection, reaction principle, process flow, equipment selection and other aspects.
II. Raw material selection
The main raw material for manufacturing diisobutylene is isobutylene. Isobutylene is a colorless, flammable gas with irritating odor, which can be obtained from petroleum cracking or natural gas separation. When choosing raw materials, the purity and content of isobutene should be ensured to avoid adverse effects on the subsequent reaction.
Three, reaction principle
Diisobutylene manufacturing method mainly adopts olefinic complex decomposition reaction, i.e. two isobutylene molecules are connected head-to-tail under certain conditions to produce diisobutylene. The reaction needs to be carried out under the action of a catalyst, and commonly used catalysts include acid catalysts and metal catalysts. The reaction temperature and pressure need to be controlled during the reaction to ensure the smooth progress of the reaction.
4. Process flow
The manufacturing process of diisobutylene mainly includes the following steps:
1. Raw material pretreatment: purify and dry the isobutylene to ensure that its purity and moisture content meet the requirements of the reaction.
2. Reaction: The pretreated isobutylene is introduced into the reactor, and the olefin complex decomposition reaction is carried out under the action of catalyst to generate diisobutylene.
3. Product Separation and Purification: After the reaction, the reaction products are separated and purified to obtain diisobutene products with high purity.
4. Catalyst regeneration: the used catalyst is regenerated to restore its activity and realize the recycling of catalyst.
V. Equipment selection
In the manufacturing process of diisobutene, it is necessary to select suitable equipment to ensure the smooth progress of production. The following is the main equipment selection:
1. Reactor: the reactor with good mass and heat transfer performance should be selected to ensure the uniformity and efficiency of the reaction. Commonly used reactor types include stirred kettle reactor and fixed bed reactor.
2. Separation equipment: according to the requirements of product separation and purification, choose suitable separation equipment, such as distillation tower, absorption tower and so on.
3. Storage equipment: choose suitable storage equipment, such as tanks, cylinders, etc., to ensure the safety of product storage and ease of use.
VI. Safety production and environmental protection requirements
In the manufacturing process of diisobutylene, it is necessary to pay attention to safety production and environmental protection requirements. Effective measures should be taken to reduce the safety risks in the production process, such as strengthening the maintenance of equipment and improving the operating procedures. Meanwhile, the treatment and emission control of the production waste gas should be strengthened to reduce the impact on the environment.
VII.CONCLUSION
Diisobutylene, as an important raw material for the production of chemicals, has been continuously improved and optimized in its manufacturing method. In the selection of raw materials, reaction principle, process flow and equipment selection, attention should be paid to the improvement of production efficiency and product quality, and at the same time, safety production and environmental protection management should be strengthened in order to realize the sustainable development of production.
