Chemical company uses hot water, rather than steam, to heat their 10,000 pound capacity jacketed blender. The system must mix powders and small quantities of liquids, then dry the mixture in a very short time.
Product example: 7,000 pound batch is vacuum dried to 2,000 pounds in less than 12 hours.
There is no flexibility in the quality of the product produced, it must be precise to specification and consistent. Product is very heat sensitive so tight temperature control is required. Steam poses a problem with overheating and product burn-on.