Increasing the capacity of an evaporation unit

Abstract

The IGPC Engineering Department designed a basic technological project for an evaporation unit for detergent zeolite production at "Zeolite Mira", Mira, Italy. The evaporation unit was for a capacity of 15,000 t/h of evaporated water per hour from 26,000 t/h of 11 % NaOH solution.The gained product meets all quality regulation, as well as environmental regulations. The evaporation process is fully automatized, and the product has uniform quality. There is no waste material in detergent zeolite production, because all products with unsatisfactory quality are returned to the process. The production process can be controlled manually, which is necessary during start-up, and repairs. A fully closed cycle of filtrate was achieved by installing an evaporation unit. 11% NaOH solution is produced in detergent zeolite filtration, which is dangerous waste. It is evaporated to 26% NaOH solution and afterwards returned to the wet hydrate dissolution plant. In this way environmental protection is achieved, as well as a highly economical process.

Keywords

• Evaporation unit
• Technology
• Plant