Manufacturing method of n-octanol
I. Introduction
N-octanol is an important raw material for the production of chemicals, which is widely used in the fields of coatings, inks, detergents, plastic plasticizers and so on. With the growing market demand, the manufacturing method of n-octanol has become a hot research topic. In this paper, we will introduce the manufacturing method of n-octanol, including raw materials, process flow, reaction principle, equipment, operation steps, quality control, safe production and environmental protection requirements.
II. Raw materials
The raw materials for the manufacture of n-octanol are mainly paraffin oil and hydrogen. Paraffin oil is a kind of hydrocarbon, the main component is alkane, with a high number of carbon atoms. Hydrogen is used as a reducing agent to reduce unsaturated hydrocarbons such as olefins in paraffin oil.
3. Process flow
The manufacturing process of n-octanol mainly consists of the following steps:
1. Hydrotreating of paraffin oil: paraffin oil is mixed with hydrogen and hydrogenation reaction is carried out at high temperature and high pressure to reduce unsaturated hydrocarbons, such as olefins, in paraffin oil to saturated hydrocarbons.
2. Alcoholization reaction: Hydrotreated paraffin oil is mixed with syngas (a mixture of hydrogen and carbon monoxide), and the alcoholization reaction is carried out under the action of catalyst to produce n-octanol and water.
3. Separation and refining: The mixture after the alcoholization reaction is separated to obtain crude octanol and water. The crude n-octanol is then refined to remove impurities and obtain pure n-octanol product.
Four, reaction principle
The main reaction principle involved in the manufacturing process of n-octanol includes hydrogenation and alcoholization reaction. Hydrogenation reaction is under the action of high temperature, high pressure and catalyst, so that the unsaturated hydrocarbons in paraffin oil and hydrogen undergo addition reaction to produce saturated hydrocarbons. Alcoholization reaction is under the action of catalyst to make the hydrotreated paraffin oil react with syngas to produce n-octanol and water.
V. Equipments
The equipments to be used in the manufacturing process of n-octanol include hydrogenation reactor, alcoholization reactor, separation tower, refining tower and so on. Hydrogenation reactor and alcoholization reactor need to have the performance of high temperature and high pressure resistance, and need to be equipped with catalyst adding system. Separation tower and refining tower need to have the ability of high efficiency separation and refining to ensure the purity of the product.
VI. Operation steps
The operation steps for manufacturing n-octanol mainly include the following:
1. Hydrotreating: mix paraffin oil and hydrogen according to a certain proportion, add it into the hydrotreating reactor, and carry out the hydrotreating reaction under high temperature and high pressure.
2. Alcoholization reaction: Paraffin oil after hydrotreating is mixed with syngas and added into alcoholization reactor to carry out alcoholization reaction under the action of catalyst.
3. Separation and refining: The mixture after the alcoholization reaction is introduced into the separation tower for separation operation to obtain crude octanol and water. The crude n-octanol is then introduced into the refining tower for refining operation to obtain pure n-octanol product.
VII. Quality control
In the manufacturing process of n-octanol, the quality of the product needs to be strictly controlled to ensure that the product meets the relevant standards. The main quality control indexes include the purity, color, acidity and moisture of n-octanol. In order to ensure the quality of the products, it is necessary to establish a perfect quality inspection system, and monitor and adjust the key parameters in the production process in real time.
VIII, safe production and environmental protection requirements
Octanol manufacturing process needs to pay attention to safe production and environmental protection requirements. The production process should strictly abide by relevant laws and regulations to ensure employee health and production safety. At the same time, the management of wastewater, waste gas and other pollutants should be strengthened to reduce the impact on the environment.
IX.Conclusion
Octanol, as an important raw material for the production of chemicals, its manufacturing method involves the control of several links and process parameters. In order to ensure the quality of the product and production safety, it is necessary to establish a perfect quality inspection system and safe production management system. At the same time, strengthening environmental protection management and reducing the impact on the environment are important guarantees for the sustainable development of the n-octanol manufacturing industry.
