Quality Control

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

By Navin G. Ashar, Kiran R. Golwalkar

This severe quantity presents functional insights on sulfuric acid and comparable plant layout and on recommendations to enhance and improve considerably the potency of an latest plant via small differences. The e-book presents readers with a greater realizing 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 may be brought to applied sciences for making their sulfuric acid organisations extra efficient, remunerative, and environmentally pleasant. A functional consultant to the Manufacture of Sulfuric Acid, Oleums, and Sulfonating Agents covers sulfuric acid and spinoff chemical plant information from the nuts-and-bolts point to a holistic point of view in keeping with genuine box adventure. The booklet is crucial to somebody concerned about enforcing a sulfuric acid or comparable chemical plant.

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Extra resources for A Practical Guide to the Manufacture of Sulfuric Acid, Oleums, and Sulfonating Agents

Example text

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. 3 Kcal / g Mole further to the right. 0 °C. As lower temperature favors higher overall conversion it is obvious that a higher yield of the above reaction will be obtained as compared to the conventional (3+1) DCDA process.

A. plants generally consist of some unconverted SO2, unabsorbed SO3, and acid mist escaping from demisters installed in final absorption tower. These are minimized by the following techniques: • Providing a continuously operating alkali scrubber for SCSA plants. • Using a DCDA process instead of SCSA and cesium promoted catalyst in the last pass of the converter. • Strict control of process temperatures and SO2 percentages in gases at the inlet to the converter. • Use of efficient hot gas filters and sulfur filters to minimize the deposition of ash on the catalyst surfaces.

In India it is the State Pollution Control Boards and the height is generally 30 m above ground level. 1 Production of 25% Oleum The gases exiting from the converter passes contain SO3 and SO2—their relative quantities being dependent on the conversion of SO2 that has taken place so far. 8% in the last pass, depending on the plant design, catalyst loading, operating conditions, etc. It is essential that the gases contain as high a concentration of SO3 as possible in order to have a good mass transfer rate for absorption in the circulating stream of oleum in the tower.

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