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Henan Chemical Industry High-tech Development Strategies (c)

Drilling and production needs, research and development of efficient,[link widoczny dla zalogowanych], high quality, energy saving, low pollution of new oil field chemicals. Food additives: focus on the development of additional products and balanced nutritional food 5, to improve the nutritional effects of food. Addition of protein, amino acids, nutrition enhancer, vitamins and trace elements (such as Ca, Zn, Fe, P); improve the quality of the food processing additives, such as emulsifiers, thickeners, sour agent, fermentation agent; extend food shelf life preservatives, antioxidants. Feed additives: focus on the development of amino acids, fungicides, growth enhancers and animal health supplies of fish, to 2000, China's feed production will reach 80 million t, the required amount of the main additives: Met 30 000 t or more, depends on acid 2.5 ~ 30 000 t, vitamins 5.5 ~ 60000 t, feed phosphates 20 to 25 million t, 1.5 ~ 20,000 mildew antioxidant t, Drug additives 15000 t, all kinds of antibiotics 35000 t. Paper Fine Chemicals: focus on the development, combined with our lack of resources and international pulp wood pulp prices, the development of features in line with our resources, and paper production status of products supporting; use of various fine chemicals synergy , supporting the development and paper products, and product series, low cost, high efficiency of its features; develop multi-functional, wide range of new products, development of \Salt and Chemical: Henan soda ash, caustic soda, salt production and annual consumption of 60 to 70 million t, basically from Shandong, Hebei, Jiangsu, Qinghai and other places. The average factory price per ton of salt to 250 to 300 yuan, of which rail and short-distance transport costs 60 to 150. Alkali industry, two in Henan Province to pay 600.07 billion yuan a year on shipping and packaging fees. Henan Zhongyuan salt reserves, content, brine concentration, quality and stability. At 100 salt, the average is only 40 yuan per ton of salt. Alkali production concentrated in the two in Henan Province Jiaozuo (with salt 220,000 t), Zhengzhou (with salt 25 million t), Kaifeng (with salt 30,000 t), a total of 50 million with the salt t, the province accounted for two alkali salt used in the production of 71 ~ 83. Pingdingshan resin plant by the Central Plains salt brine production of caustic soda (mixed against more than 30%), reduce the cost of 70 million tons of alkali, obvious benefits. But the operation must be shipped 3.3t lt salt brine,[link widoczny dla zalogowanych], far away from the Central Plains salt Kaifeng,[link widoczny dla zalogowanych], Central China Jiaozuo the use of a salt brine, is economically feasible. Brine for this pipeline to be laid, with a total investment of 1.4 billion, 3-year pay off the principal and interest, starting from the first 4 years, the Central Plains salt can produce benefits 75 million yuan each year. (To be continued) * 6 Abstract gas gas separation membranes based on Wu Yin 1998 Henan Chemical Research D 7. Han Wulin f, (Tianjin University 300072) (first-Tech Instruments Co., Ltd. Tianjin 300192) membrane characteristics of the development process, when the existing system of gas separation membranes were reviewed, and when separation performance of a variety of gas separation membranes elaborated. , Keywords selective membrane permeability of the gas dust limonene wing is, ��. _ --- _-A __ - '-'-a __-_ - a-r \ v 'a membrane separation is a new separation technology, has to polyimide (PI) is a class ring chain compounds,[link widoczny dla zalogowanych], the first low consumption, simple equipment, easy operation, has been widely used in oil exploration, chemical industry, food packaging, preservation, oil refinery waste recycling, energy efficiency of industrial furnaces, and environmental protection. Therefore, countries (mainly Europe, America, Japan and other countries) into research and development,[link widoczny dla zalogowanych], in order to make progress in this area. In recent decades, many gas separation membranes have been developed, some of which have been applied, this process will be characterized based on its development has been divided into the main polyimide gas separation membranes for gas separation, gas separation of organic silicon film, film, promotion of transfer film containing amino four. A polyimide gas separation by the Bogert and Renshaw [�� synthesized in 1906, according to the structure of polyimide and preparation methods can be divided into two categories: �� the main chain polyimides containing aliphatic chain; �� main chain containing aromatic polyimide. PI in the mid-80s has been seriously, its good mechanical properties, chemical stability, thermal stability and processing properties used in gas separation on the first [2 chu]. Especially in a strong industrial background of the separation system, such as H2/Nz, 02/N2, H2 / a, CO2/Nz, (/ a wait to have good results (see Table 1). Table 1PI gas separation membrane The results followed the general principles of membrane material: selectivity of the low permeability of high permeability and high selectivity low. and several polyamide Received Date :1998 -02-25
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