Input acid compositions H2SO4 production

Fig. 23.5. Acid plant water requirement as a function of mass SO3 into H2SO4 making tower. The water requirement increases with increasing SO3 input mass, Section 23.7.4. With a 100% H2SO4 product, the slope is 0.225 (Fig. 23.2). With 2 mass% H2O, 98 mass% H2SO4 product acid, it is 0.25 (as shown). It varies, therefore, with product acid composition.

Fig. 21.1. Heat transfer flowsheet for single contact, suliiir burning sulfuric acid plant. It is simpler than industrial plants, which nearly always have 4 catalyst beds rather than 3. The gaseous product is cool, SO3 rich gas, ready for H2SO4 making. The heat transfer product is superheated steam. All calculations in this chapter are based on this figure s feed gas composition and catalyst bed input gas temperatures. All bed pressures are 1.2 bar. The catalyst bed output gas temperatures are the intercept temperatures calculated in Sections 12.2, 15.2 and 16.3.

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See also in sourсe #XX -- [ ]

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