Manufacturing Method of High Purity Diethyl Carbonate (DEC)
Diethyl Carbonate (DEC) is an important organic chemical raw material, which is widely used in the fields of pharmaceuticals, pesticides, plastics, and spices. Among them, high purity diethyl carbonate is a necessary raw material for many high-end applications. In this paper, a manufacturing method of high purity diethyl carbonate will be introduced.
I. Raw materials and equipment
1. Raw materials: ethanol, carbon dioxide, catalyst (e.g., sulfuric acid, phosphoric acid, etc.), dehydrating agent (e.g., anhydrous magnesium sulfate, etc.).
2. Equipment: reactor, condenser, fractionating tower, storage tank, pump, valve, etc.
2. Process flow
1. Add ethanol and catalyst into the reactor, stirring and heating to a certain temperature.
2. Admit carbon dioxide gas, control the reaction temperature and pressure, so that ethanol and carbon dioxide under the action of the catalyst to carry out esterification reaction to produce diethyl carbonate.
3. At the end of the reaction, the reaction solution is distilled to separate out the unreacted ethanol and water.
4. After distillation, the diethyl carbonate is dried by adding a dehydrating agent to remove the residual water.
5. After drying, the diethyl carbonate is distilled to obtain high purity diethyl carbonate product.
3. Operation points
1. Control the reaction temperature and pressure to avoid the occurrence of side reactions.
2. Control the distillation temperature and vacuum degree during the distillation process to ensure the purity of the product.
3. Select suitable dehydrating agent in drying process, and control the drying time and temperature.
4. Adjust the operating parameters according to the requirements of product purity in the process of distillation.
4. Safety and environmental protection measures
1. Strictly observe the safety operation regulations during the operation to ensure the safety of employees and equipment.
2. Waste and waste water should be properly disposed of to avoid pollution to the environment.
3. Strengthen the maintenance and upkeep of the equipment to reduce the occurrence of malfunction and leakage accidents.
V. Quality control
1. Conduct quality inspection of raw materials to ensure that the quality of raw materials meets the requirements.
2. Carry out real-time monitoring of the production process to find and solve problems in time.
3. Conduct quality inspection on products to ensure that the purity of products meets the requirements.
VI. Revenue Analysis
The revenue of manufacturing high purity diethyl carbonate mainly depends on the purity of the product, production and sales price. Generally speaking, the selling price of high purity diethyl carbonate is higher, so it can bring higher revenue. At the same time, increasing the yield can also reduce the cost per unit of product and increase the revenue.
VII.Market Prospects
As an important organic chemical raw material, diethyl carbonate of high purity has a wide range of applications in the fields of medicine, pesticides, plastics, spices and so on. With the continuous development of science and technology, the application fields of diethyl high purity carbonate will continue to expand. Therefore, the market prospect of high purity diethyl carbonate is very broad.
In conclusion, the manufacturing method of high purity diethyl carbonate needs to control the reaction conditions, operation process and product quality, and at the same time, strengthen the safety and environmental protection management and quality control, in order to obtain high-quality products and achieve better economic and social benefits.
