Development history of Suwei pure alkali process

Ammonia-alkali method makes the production realize continuous production, improves the utilization rate of salt, and the product quality is pure, so it is called soda ash, but its biggest advantage lies in its low cost. 1867, the products made by factories in Solvi won the bronze prize at the Paris World Expo, and this law was officially named Solvey's Law. At this time, the price of soda ash dropped sharply. The news spread to Britain, and Hutchinson Company, a British company engaged in producing alkali in Lubran, obtained the right to monopolize Solvefa for two years. 1873, Hutchinson Company was reorganized into Bunemen Company, and a large factory for producing soda ash was established. Later, France, Germany, the United States and other countries set up factories one after another. These countries have initiated SolwayGuide, and the design drawings are only open to member countries and are absolutely confidential. Where there are improvements or new discoveries, member States communicate with each other and agree not to apply for patents to prevent leaks. In addition to technology, there are also business restrictions. They sell goods by district. For example, the China market is monopolized by the British company Bremen. Because of such a strict organization, anyone who can't get permission from Solvay's guild can't ask the details of ammonia and alkali production at all. For many years, many countries have failed to explore the manufacturer of Solvefa. Until 1933, Hou wrote a book "The Manufacture of Soda Alkali", which made the production method of soda in Solvi public. Later, it was replaced by the more advanced Hou's alkali production method.