丙烯腈装置焚烧炉余热回收利用的分析

An Analysis of the Recovery and Utilization of Waste Heat from a Acrylonitrile Plant Incinerator

对丙烯腈装置旧焚烧炉焚烧废水后产生的余热在能源利用方面存在不合理的地方进行了介绍,提出了通过增设一台卧式焚烧炉,利用导热油作为热载体,对废水焚烧后产生的余热进行回收利用的方案,对余热回收系统在运行过程中产生的导热油炉管腐蚀和炉管结垢的问题及原因进行了阐述,通过改变废水焚烧流程实现不同的废水分开焚烧的办法解决了炉管腐蚀的问题,在新焚烧炉增设吹灰器的办法解决了炉管结垢问题,达到了合理利用焚烧炉余热的目的。

An analysis is conducted of the irrational factors concerning the utilization of waste heat energy produced after the wastewater is burned by using an old acrylonitrile plant incinerator.A scheme is proposed to additionally install a horizontal incinerator and to use heat-conduction oil as a heat carrier to recover and utilize the waste heat produced after the incineration of waste water.Expounded are such problems as the corrosion of heat conduction oil furnace-tubes during the operation of the waste heat recovery system and scale deposit formed on furnace tubes and their underlying causes.The furnace tube corrosion problem has been solved through a change in waste water incineration flow path and the implementation of separate incineration of different flows of waste water.The problem of scale deposit formation on furnace tubes was solved by additionally installing soot blowers on the new incinerators,thus attaining the aim of rationally utilizing the waste heat produced by the incinerators.