硫酸车间基础知识.（Basic knowledge of sulphuric acid workshop）.doc

硫酸车间基础知识.（Basic knowledge of sulphuric acid workshop） This article is contributed by Tong Zugang DOC 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. Basic knowledge of sulphuric acid workshop (1) nature of H2SO4: Chemical properties: 1, water absorption 2, oxidation 3, corrosive 4, dehydration, hydration, sulfonation (2) physical property It is a colorless, transparent, oily liquid, heavier than water P=1.8269 (93%) (3) molecular formula: H2SO4 (4) H2SO4 production method More than 80% of sulfuric acid is produced by contact process, and sulfuric acid produced by our plant is also used for contact process. First, the process (1) SO2 gas manufacturing (2) SO2 gas purification (3) SO2 contact oxidation SO3 (4) SO3 gas absorption Two, SO2 gas reaction equation (1) 4Fe7S8+5302=14Fe2O3+32SO2 (total reaction) 4FeS+7O2=2Fe2O3+4SO2 (Hong Zha) 3Fe7S8+38O2=7Fe3O4+24SO2 (Hei Zha) (2) when O2 is excessive, the slag is red (Fe2O3), and when O2 is insufficient, the slag is black (Fe3O4) (3) when the O2 excess gas SO2 concentration is not high and the SO3 (the original fog) when O2 lack of gas with high SO2 concentration, basically no SO3 (original acid). (4) when O2 is excessive, no S is promoted, and the residue is low in sulfur content, when O2 is insufficient The ascending S has higher sulfur content in the residue. (5) in practice, in order to combine two advantages of red slag and black slag, slag Color is generally controlled by brown. Three 、 purification of furnace gas 1, purification of the three major purposes: The cooling of the dust removing mist and other impurities (such as AS\Se) 2, dust on the post process hazards? Blocking piping and equipment. The catalyst surface will be covered, the catalyst will scar, the activity will decrease, the resistance will be increased, and the conversion rate will be reduced. Entering the finished product acid affects the quality of f