火电厂脱硫系统石膏脱水机方案比选
Comparative Selection of Gypsum Dehydrator for Desulfurization Systems in Thermal Power Plants
姚瑶 1张卫峰 1王骞1
作者信息
- 1. 河南省电力勘测设计院,河南郑州 450000
- 折叠
摘要
脱水机是火电厂脱硫系统中的重要设备,直接决定了脱硫副产品——石膏的品质.对石灰石-石膏湿法脱硫工艺中的真空皮带脱水机及圆盘脱水机进行分析对比.真空皮带脱水机技术成熟,结构简单,一次性投资小,运行业绩多,但电耗高,运行费用高;圆盘脱水机占地面积小、电耗低、运行经济性好.以某2×1000 MW火电厂脱硫系统的石膏脱水机选型为例,通过对比设备初投资、电耗、水耗及检修维护费用,圆盘脱水机比真空皮带脱水机初投资增加约345万元,年运行及检修维护费用节约约78.29万元.
Abstract
The dehydrator is an important apparatus in the Fuel Gas Desulfurization(FGD)system of thermal power plants,which directly determines the quality of the desulfurization by-product-gypsum.This essay analyzes and compares the vacuum belt-type dehydrator and disc-type dehydrator in the limestone-gypsum wet desulfurization process.The vacu-um belt-type dehydrator technology is mature,with a simple structure,low initial investment,and high operating per-formance,but it has high consumption and operating costs.The disc-type dehydrator has a small footprint,low power consumption,and operating fees.Taking the selection of gypsum dehydrator for a desulfurization system of 2 × 1000 MW plant as an example,by comparing the initial investment,electricity consumption,water consumption,and maintenance costs of the equipment,the initial investment of the disc-type dehydrator is increased by about 3.45 million Yuan compared to the vacuum belt-type dehydrator,and the annual operation and maintenance costs are saved by about 782.9 thousand Yuan.
关键词
火电/脱硫/石膏脱水机/圆盘脱水机/真空皮带脱水机Key words
thermal generation/desulfurization/gypsum dehydrator/disc filter/vacuum belt dehydrator引用本文复制引用
出版年
2024
NETL
NSTL
万方数据