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

By Navin G. Ashar, Kiran R. Golwalkar

This serious quantity presents useful insights on sulfuric acid and similar plant layout and on recommendations to enhance and improve considerably the potency of an present plant by way of small variations. The publication presents readers with a greater figuring out of the state-of-art in sulfuric acid manufacture in addition to, importantly, within the manufacture of value-added items in line with sulfur which are additionally linked to the manufacture of sulfuric acid. total, engineers and plant managers can be brought to applied sciences for making their sulfuric acid organisations extra efficient, remunerative, and environmentally pleasant. A functional advisor to the Manufacture of Sulfuric Acid, Oleums, and Sulfonating Agents covers sulfuric acid and by-product chemical plant info from the nuts-and-bolts point to a holistic point of view according to genuine box adventure. The publication is quintessential to someone concerned with enforcing a sulfuric acid or comparable 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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5 Pressure Process The conversion of SO2 to SO3 increases as the operating pressure is increased since there is a reduction in volume during the reaction 2SO 2 + O 2 ® 2SO3 The increase can be achieved by maintaining optimum temperatures in the catalyst bed. Increasing the process gas pressure can reduce the required size of the equipment, but the higher power consumption of the blower offsets the advantage gained. Hence most SA plants are built to operate at only a little above atmospheric pressure.

Regular replacement of the tubes every 2 years and pressure tests during annual shutdowns will be found useful. Gas Heated Oleum Boiler—GHOB Hot gases from the exit of one or more of the converter passes is used for boiling the oleum. The heat transfer rates are low in GHOB due to process gas being the heating medium and hence these units are bigger in size. The hold-up of oleum on the shell is also greater. 26 2 Processes of Manufacture of Sulfuric Acid These units need bigger and stronger support structures The plant designer does not have many options available for locating these units since they need main process gas duct connections at inlet and exit.

4 gives an overview of techniques that have a positive effect on, that is reduce, the emissions of SO2 for the manufacturing of sulfuric acid. Most sulfuric plants have taken general primary optimization measures like process control. a. 6 All All All All All <200 <200 <200 <1,000 <200 <2 <2 <2 <2 <2 There are many other processes available for SO2 removal from stack gases. Some of them are listed below: 1. By absorption in liquid medium such as (a) Sodium hydroxide solution (b) Sodium carbonate solution (c) Alkali fly ash (d) Ammonium hydroxide solution 2.

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