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Wysłany: Pon 22:10, 17 Sty 2011
Temat postu: Modification of the oxidation of aminophenol _980
Modification of the oxidation of aminophenol
Reducing agent and production methods, product sales do not go out there temporary deterioration of the situation, we often used. Proved through the years, these two methods is quite effective. Re-reduction deal with the production of bleaching we co-operate as an important link with the activated carbon addition on decolorization have a very important relationship. Production of activated carbon in the normal dosage of 2.5% p-aminophenol, and in the treatment of activated carbon materials, addition of deterioration of 4%, which in the first half of 1985, the number of approved products and then proceeds to restore the normal appearance of the products compare the two the same color in the bleaching operation is also activated when particular attention to increase the temperature of liquid, in fact, feed temperature control is also an important condition for decolorization, feed temperature 6o-_8O. C, start adding activated carbon, then open the pores of activated carbon, the adsorption capacity of the best, when the temperature rose to 80 ℃ should last 15 - 20 minutes, so that the full adsorption of activated carbon impurities, and then the temperature rose above 90 ℃, pores of activated carbon can be closed at this time, the impurities in the package Qi kept tightly in there, marking ten Shuyou Li Ke access to technical literature over the activated carbon carrying the towel in the bleaching properties. Poor sales of products in the past, factory inventories aminophenol which trapped ultra-serious deterioration of coral metamorphic five tons, after re-reduction treatment, the qualified products have reached the requirements of (r were carried out extensive analysis by the relevant tests for qualified products) for mild deterioration aminophenol, then at any time in the production of its mild reduction treatment by deteriorating items and then deal with the loss of buildings was also 5-8%. And serious deterioration products by re-reduction treatment,
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, the loss rate of 1O to 12%. V. CONCLUSIONS 1. Ferrite reduction advantages: 1) hydrochloric acid using iron powder reduction of £ p-nitrophenol is a commonly used industrial process older method, iron powder is used in mechanical processing of industrial scrap iron down the ground into a certain fineness powders not only economically cheap, and easy to get in terms of resources, and to produce qualified products. 2) iron faster acid reduction, carbon gray cast iron, manganese, silicon, sulfur, phosphorus and other elements, the presence of electrolytes in the electrochemical reaction, corrosion of iron very fast wet breast, which can speed up the reduction reaction speed, the use of zfJ, t less, and save energy, reduce product cost. 2. Disadvantages: System Restore iron amino acid phenol oxidation deterioration of their products difficult to overcome. Over the years various manufacturers and research departments have done a lot of effort and a lot of work, but did not find a satisfactory solutions. 3. Oxidative deterioration of re-reduction of paracetamol by the success of the deterioration of paracetamol with sodium or iron reductant different re-reduction treatment, re-qualified products obtained success. This results not only in the production of succinic arts through the storm, and the product companies to avoid the economic losses caused by deterioration Xin. Especially in the current domestic and international markets the increasing demand for paracetamol, as a manufacturer of paracetamol increased the yield significantly, for the expanded reproduction of practical significance. To increase warehousing capacity after large-scale production to provide a technically feasible measures to ensure product quality, so as to achieve greater business after the economic expansion has laid a solid foundation. Quarry Books Quarry fight books c c c Kwame wins book battle war book wins praise the book master c c c hairpin boast boast boast c debit competing books c c c Kwame Kwame book book won the war book series \American Society for Metals standardization bodies (A) in accordance with its large computer database of the world iron and steel (grade) of the data compiled from the \Engineers Chen Hengqing translated into Chinese by the China Standard Publishing House. The book includes 34 countries of the world, international and national institutions 5O issued nearly a thousand types of steel material grades, according to cast iron, cast steel, carbon steel, Taiwan bronze, stainless steel, corrosion resistant steel,
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