卷烟厂烟草真空回潮机抽真空蒸汽的余热回收

分析了卷烟厂蒸汽喷射式真空回潮机抽真空蒸汽余热回收利用的价值,简要论述了余热回收的难点;介绍了真空回潮机抽真空蒸汽余热回收系统的结构及工作原理;指出余热回收系统应用后,郑州卷烟厂每年可减少天然气消耗约25万m3,同时降低了对周边环境的噪音和热蒸汽污染,设备的抽真空效率提高了16.2%。

蒸汽-水喷射混合器的设计与应用

介绍了蒸汽-水喷射混合器的工作原理相关的设计计算及其在蒸汽-水热回收系统中的成功应用。该混合器与传统的间接式换热器相比具有系统阻力小和换热效率高的特点,此技术适合于化工加压设备自动或手动控温操作系统的余热回收。

锅炉油改气节能减排工程

为响应地方政府号召实施清洁生产,某企业实施了锅炉油改气节能减排工程,通过油改气燃料替代,将原来的2台6t/h燃油锅炉改造为2台6t/h燃天然气锅炉,同时对锅炉蒸汽系统开展了余热回收利用,节约了锅炉供水,减少了燃料消耗和尾气污染物排放。项目年综合节能量为992t标准煤,减少废水排放量约18000t,减少年燃料费用、环保设施年运行费用共计126万元,达到了节能降耗、减污增效的目的。

Optimal Analysis of Pure Low-Temperature Waste Heat Recovery Generation System

In this paper, a detailed thermodynamic analysis of the pure low-temperature waste heat recovery generation system is presented. The parameters affecting the system performance are compared to obtain the most significant ones; furthermore, parameter values are optimized for the largest power generating capability of the system. It is found that the most important parameters are inlet flue gas temperature, steam pressure and the pinch point temperature difference. There is an optimal superheated steam pressure value for giving the maximum generation power per unit flue gas. With the increase of inlet flue gas temperature, the generating power increases and the optimized steam pressure rises as well. However, with increase in pinch point temperature difference, the generating power decreases and the optimized steam pressure decreases as well. The theoretical calculation provides a theoretical basis for the parameters optimization in the design of the pure low-temperature waste heat recovery eeneration swtem