DTDC的节能实践Energy saving practice of DTDC

Abstract

为了降低大豆压榨厂中DTDC的蒸汽消耗量，对DTDC的结构和操作进行调整，并介绍了回收DT层热风余热、DC热风尾气余热及DTDC夹层余热的工艺技术。将DT气相温度由72~75 ℃下调至68~70 ℃，搅拌翅改为折弯式，各层的旋转阀配置变频电机，让物料呈悬浮状；DC热风层每层配一台风机，装变频电机，增加节能层。实践证明：经调整后的DTDC生产的成品豆粕外表呈金黄色,散发出浓香味，残溶在190~300 mg/kg；豆粕的KOH蛋白质溶解度大于80%；DTDC蒸汽消耗量得到有效降低。In order to reduce the steam consumption of DTDC in the soybean pressing plant, the structure and operation of DTDC were adjusted, and the process technology of recovering the waste heat of DT layer hot air, DC hot air vent gas and the waste heat in the interlayer of DTDC were introduced. The DT gas phase temperature was adjusted from 72-75 ℃ to 68-70 ℃, the stirring fins were changed to bending type, and the rotary valves in each layer were equipped with inverter motors to make the materials in suspension; the DC hot air layer was equipped with one blower fitted with inverter motors in each layer, and the energy-saving layer was increased. Practice had proved that the finished soybean meal produced by the adjusted DTDC had golden yellow appearance with a strong aroma, and the residual solvent was 190-300 mg/kg, KOH protein solubility of the soybean meal was greater than 80%, and steam consumption of the DTDC was effectively reduced.

Keywords

• 气相温度；回收余热；豆粕残溶；koh蛋白质溶解度
• gas phase temperature; waste heat recovery; residual solvent in soybean meal; koh protein solubility