Method of manufacturing 95% ethanol
I. INTRODUCTION
Ethanol, also known as alcohol, is an organic compound widely used in the chemical, pharmaceutical and food industries. Among them, 95% ethanol has special applications in many fields due to its specific concentration and properties. In this article, the manufacturing method of 95% ethanol will be introduced in detail.
2. Raw materials and equipment
1. Raw materials: the main raw material is starch or waste molasses, and the auxiliary raw materials are yeast, phosphoric acid and lime.
2. Equipment: fermenter, distillation tower, condenser, storage tanks and so on.
3. Manufacturing steps
1. Starch saccharification: add starchy raw material into warm water, adjust pH value, add saccharification enzyme for saccharification to produce glucose.
2. Fermentation: cool the glucose solution to the appropriate temperature, access the yeast for fermentation to produce ethanol and carbon dioxide.
3. Distillation: The fermentation solution is heated to boiling and the ethanol vapors are collected by condensation through a condenser to obtain crude ethanol.
4. Distillation: The crude ethanol enters into the distillation tower and is purified to 95% ethanol by distillation.
4. Precautions
1. Control the fermentation temperature to avoid too high or too low temperature affecting the yeast activity.
2. Keep the pH value in the fermenter stable to ensure yeast growth and fermentation process.
3. In the process of distillation, strictly control the temperature and pressure in the tower to ensure product quality.
V. Quality standard
The quality standard of 95% ethanol should be in accordance with the following regulations: ethanol content ≥95%, moisture ≤5%, acidity ≤0.005%, and other impurities should be in accordance with relevant regulations.
VI. Safety and environmental protection
1. The production process should strictly follow the safety operation regulations to prevent fire, explosion and other accidents.
2. Waste should be properly disposed of to avoid pollution to the environment.
VII. Conclusion
The manufacture of 95% ethanol involves a number of links and considerations, and requires strict control of the quality of raw materials, equipment, operation and other aspects. Through scientific manufacturing methods and strict quality control, high-quality 95% ethanol can be produced to meet the needs of the chemical industry, medicine and other fields. Meanwhile, the production process also needs to pay attention to safety and environmental protection to ensure the sustainability and social benefits of the production activities.
