On August 17th, Zhejiang Hung Kai Petrochemical's 120,000-ton/year polypropylene project contracted by China Chemical Engineering Jisan Construction Co., Ltd. was successfully tested at one time and qualified products were produced. The project is located in Zhapu Industrial Park, Jiaxing Port, covers an area of ​​45630.2m2, and uses domestic self-developed ZG process to produce polypropylene. During the construction, Sihuajian Company's warfighters overcome difficulties such as high groundwater level, tight schedule, and multi-unit cross-operations. They have formulated strict quality assurance measures and fully implemented the HSE policy. After 16 months of hard work, they successfully completed construction tasks. Highly praised by the owners.
Acids exist universally in our life. There are both numerous kinds of natural acid compounds with biological functions and massive synthesized acids which are used in many ways.
In industry
Acids are fundamental reagents in treating almost all processes in today's industry. In the chemical industry, acids react in neutralization reactions to produce salts. For example, nitric acid reacts with ammonia to produce ammonium nitrate, a fertilizer. Additionally, carboxylic acids can be esterified with alcohols, to produce esters. Acids are often used to remove rust and other corrosion from metals in a process known as pickling. They may be used as an electrolyte in a wet cell battery, such as sulfuric acid in a car battery.
In food
Many acids can be found in various kinds of food as additives, as they alter their taste and serve as preservatives. Phosphoric acid, for example, is a component of cola drinks. Acetic acid is used in day-to-day life as vinegar. Citric Acid is used as a preservative in sauces and pickles. Certain acids are used as drugs. Acetylsalicylic acid (Aspirin) is used as a pain killer and for bringing down fevers.
Acid catalysis
Acids are used as catalysts in industrial and organic chemistry; for example, sulfuric acid is used in very large quantities in the alkylation process to produce gasoline. Some acids, such as sulfuric, phosphoric, and hydrochloric acids, also effect dehydration and condensation reactions. In biochemistry, many enzymes employ acid catalysis.
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