About the traditional chemical: now use a lot of high toxic substances in the chemical production inevitable demand, such as aromatic hydrocarbons, organic metal catalyst, such as halogenated hydrocarbon solvent (such as dichloromethane, chloroform), small molecule toxic substances such as formaldehyde, methanol, methyl sulfate two for organic peroxides substances may some poor safety, chemical solvent highly volatile combustible (such as ethanol, acetone etc.), although these materials have a variety of health and safety problems, but these materials may have the ideal solvent catalyst reaction activity maybe separation characteristics and has to withstand the low market price, so now most of chemical products is still difficult to find for more security more green instead of. In fact, in the process of production, transportation and storage, we only need to conform to operation rules, theoretically, these poisonous and harmful articles are safe for people and environment. However, due to the fact that oil resources are becoming less and less, the requirements of safety and environmental protection of chemical industry are increasing.
About green chemistry: twelve principles of Green Chemistry I'm not here to transfer, there is Wikipedia. Simply say, green chemistry is now emerging as possible toward safety, improve the response of clean, renewable and atom economy policies in the effort, now in some areas, such as the green chemical solvent replacement, renewable biomass, supercritical fluid, cleaning composition and cleaning catalyst and has made must break, but now the development of green chemistry is far not enough to shake the traditional chemical status. There is a long way to go in the future. But this year, the most influential journal in the two quarter is Green Chemistry. The impact factor of the journal is 8. It is clear that green chemistry is indeed a hot research field, and looking for safer and cleaner alternatives is also the direction of future chemical and chemical engineering.
irst, the chemical itself is wrong natural, so want to be green, a bit rough, the biggest problem lies in the chemical, it will combine response, there will be many by-products of chemical reaction, the vast majority of cases are in demand and the effect of catalyst heat will occur under, in other words, chemistry is a cost and release process. Secondly, green chemistry is a relative term, from a sense of green chemistry, chemical enterprises try to reduce pollution emissions, as little as possible on the high energy consumption and high pollution projects, for example, our company now has successfully transformed, and has to work in order to carry out the construction of beautiful vision, I think the practice of green chemistry and chemical beauty is a fun. Our company is in before the coal chemical industry as the foundation of the traditional chemical enterprises, and later on the phosphorus chemical industry, pollution is still high, until two years ago, the company in the analysis of the situation, decided not to engage in high polluting and energy projects, and built a 100 thousand tons of Caprolactam, caprolactam as spinning upstream raw materials due to the precision of petrochemical products, is one of the materials of benzene, although benzene is toxic and harmful substances,
But the whole project itself does not require high temperature and high pressure, nor does it cause too much waste gas and wastewater. Compared with the previous coal chemical industry and phosphorus chemical industry, the whole plant area is almost like the light industrial plant area. But even so, it still has a certain amount of pollution, only a little little. Third, now without green chemistry, there is no way out now. The high energy - consuming chemical industry has no room for survival now. What is it? Due to the high energy consumption of chemical production, there are no technical barriers to it. Repeated construction is too simple and the threshold is very low. Therefore, the excess capacity of the state now calls for such capacity. In order to invigorate the local finance, the local government did not have the bottom line, which led to the severe overcapacity. Now the mall began boomed, many enterprises become a zombie companies, not open, start is a loss. In addition, we like to engage in image project, not repeat the chaos to build a project is built, complement each other, eventually formed a closed cycle, the end of the self-produced self-sufficiency, homegrown, profitability ranked five before the occupation. Fourth, as for the substantive development, there is no right to speak. The question is to be answered by the elites. I just want to say that the road of green chemistry is still very long and is very difficult to occupy. At last, I came up with a question: whether the so-called green chemistry refers to biochemistry, if it's biochemistry, the green chemistry is relatively simple.