Method for vinasse tube bank type drying and exhaust gas and steam condensed liquid heat recycling

Abstract

The invention relates to a method for vinasse tube bank type drying and exhaust gas and steam condensed liquid heat recycling. The method comprises the following steps: (1), after centrifuging vinasse, obtaining a wet vinasse material and vinasse clear liquid, and after concentrating the vinasse clear liquid, feeding concentrated liquid into a concentrated liquid storage tank; (2), conveying the wet vinasse material and the concentrated liquid to a material return spiral conveyor, conveying the wet vinasse material and the concentrated liquid to a mixing spiral conveyor together, mixing, and after mixing uniformly, feeding the mixture into a tube bank type drying machine; (3), feeding saturated steam into the tube bank type drying machine, and heating and drying the material mixture in a reverse flow manner so as to obtain a dried material, exhaust gas and condensed water; (4), after separating the exhaust gas by a cyclone separator, obtaining a separated material and separated exhaust gas, feeding the separated material into the material return spiral conveyor, and cyclically utilizing the separated material; (5), feeding the separated exhaust gas into a sprinkling tower, washing the exhaust gas, and separately producing secondary steam A and washing water left after heat exchange; and (6), feeding the condensed water into a condensed water flash evaporation tank, carrying out flash evaporation on the condensed water, and separately producing secondary steam B and condensed liquid. The method is simple and reliable, is continuous in running, saves energy, reduces consumption and is safe and environment-friendly.

Description

technical field [0001] The invention relates to the technical fields of energy recovery, energy saving and consumption reduction, in particular to a method for recovery of distiller's lees tube bundle drying tail gas and steam condensate heat. Background technique [0002] During the drying process of distiller's grains, a large amount of tail gas and steam condensate will be produced. Direct discharge will cause energy waste and pollute the environment. In this case, it is necessary to develop a suitable process technology for energy recovery of tail gas and steam condensate. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a simple, reliable, continuous operation, energy-saving, safe and environment-friendly method for recovery of distiller's lees tube-bundle drying tail gas and steam condensate heat. [0004] In order to solve the above problems, the distiller's grain tube-bundle drying tail gas and steam cond...

AI Technical Summary

Problems solved by technology

[0002] During the drying process of distiller's grains, a large amount of tail gas and steam condensate will be produced. Direct discharge will cause energy waste and pollute the environment.

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