硫酸系统改造与烟酸试生产工艺（Modification of sulphuric acid system and production process of Niacin）.docVIP

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硫酸系统改造与烟酸试生产工艺（Modification of sulphuric acid system and production process of Niacin）.doc

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硫酸系统改造与烟酸试生产工艺（Modification of sulphuric acid system and production process of Niacin）

硫酸系统改造与烟酸试生产工艺（Modification of sulphuric acid system and production process of Niacin） Pdf documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view. newspaper Avenue Report Modification of sulphuric acid system and production process of Niacin The Yuguang for the production of fuming sulfuric acid and sulfuric acid to transform the original system and the new production facilities, to try to control the production period index. The white paper Yinronghua 104.5%, also known as standard acid. The system completed an annual output of 100 thousand tons of hair of niacin, need to add a fuming sulfuric acid absorption tower and acid production system, taking into account changes in process control, add a 1300m3/h cooling water circulation system through calculation. 1. equipment modification of absorption process. (1) a brief description of the technological process after modification. A SO3 sent from the converter flue gas, through the control valve, a certain amount of gas into the nicotinic acid absorption tower and spray from the top circulating acid countercurrent contact SO3 in flue gas by cyclic acid absorption, absorption of cyclic acid concentration of SO3 was increased. With the increase of cyclic acid concentration, acid absorption tower from the first cycle of string into 98% sulfuric acid, increase the acid product acid. After the absorption of the nicotinic acid absorption tower, the gas enters into the first absorption tower with another part of the SO3 flue gas to produce sulfuric acid with a concentration of 98%. (2) equipment modification. This transformation is in the absorption tower Before adding a fuming sulfuric acid absorption tower, according to an annual output of 100 thousand tons of sulfuric acid, the absorption tower diameter is 4.2m, the configuration of the head for acid circulating pump 37m, SO3 into the absorption tower of the nicotinic acid gas volum