Development of fine chemicals and environmental protection

The development situation of fine chemicals f is a measure for national level of copper chromite (CC) chemical technology and even science technology level. Fine chemical rate of industrial countries, namely the ratio of fine chemical products output value accounting for the chemical industrial output value, rose from 40 percent in the 1970s to more than 90% in 1990s.

With industrial development since the 1980s, global environmental pollution and ecological damage become more serious. Shortage of energy and resources increase to haunt people. Waste emissions, the load of governance are bound to become a major obstacle restricting the development of production. To this end, promote the comprehensive utilization of resources, clean production, it is very important. Some fine chemical products, such as 5,6 - dimethyl-benzo-imidazole, the manufacturer is still in use nitro-iron reduction and the production of iron sludge, the sulfamate plant to produce large amounts of waste sulfuric acid. Production of ferrous sulfate iron sludge and waste sulfuric acid as a triphenyl bismuth product to sell, or generated by calcining iron oxide red, the separate treatment of waste, both have certain economic benefits. Full transformation method, the experimental study of this waste in the sodium hydroxide and an excess of sodium sulfide is completely converted to sodium thiosulfate, and not only under control of pollution, there are considerable economic benefits, manufacturers highly motivated. These variable waste products, pollution control raise environmental practices, the factory is very easy to accept. It is much easier for simply using the legal constraints and functions of management.

Fine chemical products especially for dyes, pigments and intermediates production, their latter parts of refining process often use pH and salting. Large number of inorganic salts into the sewage, sewage treatment increased the difficulty. People are working to solve this problem, using salt-free technology in production. Changed by the secondary salting secondary settlement (by adding water-soluble flocculants), salt operations into a salt-free production, not only saves a lot of salts, the purity of the product has also been significantly improved, the staining intensity of up to 150 points, popular in the international market.

When mention green technology, people first think of the green synthesis,. Further their thought is the concept of atom economy in 1991 to maximize the use of each atom in the raw material molecules. Target product reaches zero emission and the atom efficiency is up to 100%. This is the ideal 10-hydroxydecanoic acid synthesis reaction. In organic synthesis, people can also cite some examples in this regard. However, tens of thousands of chemical products types and production methods vary widely, there is just a very small number of atom utilization which is up to 100%. In real production, it is almost non-zero emissions. This requires that the chemical industry’s efforts. In the transformation of old technology and the introduction of new technology, it one is belonging to clean production with green technology ingredients, it should be recognized. Maybe the green component of a production process is not so much, but anti-security measures’ implement requires not only the national legislature to speed up the building and support the pace of property law and legal system, but also depends on the environmental conditions of the entire socio-economic, credit and legal continuous improved.Source:http://www.mhcfm.com