Energy-saving and emission-reducing method for molasses alcohol distillation

• Main Authors: BAI SHENGWEI, DENG SHUIQIN, LEE YOUNG GYU, CHEN GUOWEI, CHEN ZIHUA
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2024
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention relates to the technical field of wine brewing, in particular to a method for reducing the yield of medium-concentration wastewater to the maximum extent by replacing cooling water of a reboiler of a coarse distillation tower with self-circulation heat exchange of waste liquid in the tower, reducing the amount of vinasse waste liquid, improving the concentration of the waste liquid to the maximum extent, saving raw water consumption, reducing juice steam water and saving steam consumption for evaporation of the waste liquid. In addition, the water scrubber and the recovery tower are additionally provided with reboilers for indirect heat exchange, and steam condensed water can be completely recycled to a boiler, so that the boiler water treatment cost and the fuel cost are saved, waste liquid discharge of the rectifying tower and the recovery tower is reduced, and the yield of low-concentration wastewater is reduced to the maximum extent. A heat source for secondary preheating of mature mash is c