FIG. 3.6.10 Integrated process development.

FIG. 3.6.11 Letter acid production. (Reprinted, with permission, from Ian G. Laing, 1992, Waste minimisation: The role of process development, Chemistry & Industry [21 September].

Raw material consumption reduced from 13.3 tn to 7.5

tn per ton of product—a decrease of 44%. The solvents were recycled, and the hydrochloric acid (gas) was converted back to chlorosulphonic acid and recycled in the process. Sulfur dioxide gas was purified, liquified, and sold for external recycling (no sulfur dioxide emissions). All waste was reduced by about half and the aqueous effluent by about 80%. The organic load in the aqueous effluent was reduced by more than 97% through the integration of wet air oxidation, and waste gas was reduced to zero through the inclusion of waste air incineration.

As in another plant, the waste was drastically reduced but not totally eliminated. Even with ever increasing automation and processing technologies, the optimization between the input and output streams of a production process is never complete. The potential for improving efficiency always exists.

Trash To Cash

Trash To Cash

This book will surely change your life due to the fact that after reading this book and following through with the steps that are laid out for you in a clear and concise form you will be earning as much as several thousand extra dollars a month,  as you can see by the cover of the book we will be discussing how you can make cash for what is considered trash by many people, these are items that have value to many people that can be sold and help people who need these items most.

Get My Free Ebook

Post a comment