Download PDF by Navin G. Ashar, Kiran R. Golwalkar: A Practical Guide to the Manufacture of Sulfuric Acid,

By Navin G. Ashar, Kiran R. Golwalkar

ISBN-10: 3319020412

ISBN-13: 9783319020419

ISBN-10: 3319020420

ISBN-13: 9783319020426

This serious quantity presents functional insights on sulfuric acid and similar plant layout and on ideas to enhance and improve considerably the potency of an current plant via small differences. The ebook offers readers with a greater knowing of the state-of-art in sulfuric acid manufacture in addition to, importantly, within the manufacture of value-added items in response to sulfur which are additionally linked to the manufacture of sulfuric acid. total, engineers and plant managers might be brought to applied sciences for making their sulfuric acid businesses extra efficient, remunerative, and environmentally pleasant. A sensible consultant to the Manufacture of Sulfuric Acid, Oleums, and Sulfonating Agents covers sulfuric acid and by-product chemical plant information from the nuts-and-bolts point to a holistic standpoint in line with real box adventure. The ebook is fundamental to an individual excited about imposing a sulfuric acid or similar chemical plant.

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Additional info for A Practical Guide to the Manufacture of Sulfuric Acid, Oleums, and Sulfonating Agents

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24 2 Processes of Manufacture of Sulfuric Acid The temperature of circulating oleum at the inlet of the tower plays a very important role in the proper absorption of the SO3 from the gas phase. It is maintained as low as possible—and generally not allowed to exceed 52–53 °C. There is a considerable escape of acid mist from the oleum tower and hence it is almost always followed by an acid tower (the inter-pass absorption tower). 2 Production of 65% Oleum It would seem logical to increase the strength of 20–25% oleum by absorption of SO3 for production of 65% oleum.

Generally, plant operators maintain the concentration of oleum at around 23–24% if only oleum is to be produced. However, higher concentrations of oleum of around 28–30% are used if it is desired to produce 65% oleum or liquid SO3. Higher strengths of oleum are not very corrosive to steel as compared to weaker 18–20% oleums. This property is taken into consideration when designing and constructing the oleum tower, piping, oleum boiler, heat exchangers, etc. ) It is also found that, rather than a separate circulation tank for the oleum, an extension of the lower boot of the oleum tower with a submerged type circulation pump is safer and easier to operate.

The first pass (as upper ignition layer) and fifth pass (entirely) of the catalyst bed will have a cesium promoted catalyst. This is to ensure faster pick-up of the conversion process after any stoppage and also to achieve closer approach to equilibrium conversion of SO2 to SO3. Instead of the conventional (3+1) DCDA Process, the (3+2) DCDA process can be used. In this innovation, after all the SO3 produced in the first three passes has been absorbed in the oleum towers and the IPAT, the gases will be led through two more catalyst passes instead of the usual one.

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A Practical Guide to the Manufacture of Sulfuric Acid, Oleums, and Sulfonating Agents by Navin G. Ashar, Kiran R. Golwalkar

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