By Navin G. Ashar
This booklet offers a whole, in-depth research for at the influence of liquid sulfur dioxide and liquid sulfur trioxide to hold out complicated and tough sulfonations, in addition to manufacture of sulfuric acid with a CAPEX requirement of lower than part, a space requirement below one-third, and no emission of sulfur dioxide. The techniques defined during this quantity represents an cutting edge process suitable to the present production procedures of sulfuric acid, sulfamic acid, para toluene sulfonic acid and different sulfonated product.
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But this can lead to lower production rate of SO3 vapours from the GHOB/SHOB. Hence, a latest innovation to maximise the production of SO3 is to adopt a Twin Tower System wherein two Oleum Towers operate in series with lean and strong Oleum. This is found to be cost-effective and enhances overall efﬁciency above 40 %. b. Evaporation efﬁciency The circulating oleum is to be boiled by the heating medium (either plant gases for steam) to produce SO3 vapours. If the boiling is continued for longer time, the amount of SO3 vapour produced per metric tonne of oleum (fed to the boiler) will be more.
This can be converted to SO2 and subsequently converted to 98 % Sulphuric Acid by the process described in this process with minor modiﬁcations. NEAT has applied for an international patent for the same. From environmental considerations, the storage of sulphur cake is a ﬁre hazard and a solid waste disposal problem. The leachate being acidic creates liquid effluent problems. It is suggested that the sulphur sludge in a slurry/molten form can be pumped into the reactor and be converted to sulphur dioxide.
For a 4000 TPY Part A—For 15 TPD liquid SO2 plant Energy Balance and Material balance in Appendices section. Part B—For 12 TPD liquid SO3 plant material and energy balance in Appendices section. 8 Conclusion The above analysis clearly indicates the future of Sulphuric acid and sulphonating agents technology which can be applied in an innovative manner. Certain case studies are elaborated in the Chap. 7 to highlight the potential of future research and innovations. 1 Introduction One of the ﬁrst applications is suggested for the production of Sulphamic Acid (NH2SO2OH).