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深耕“绿电”十二载

2017-08-30 06:16:35   中国青年网

同年底,公司又启动了1、2号机组改造。“员工主动放弃休息,夜以继日,在保质量、保安全的前提下,仅用55天工期,就完成了1号机组改造,创下了一个奇迹。”湘潭发电公司环保部副主任杨飞指着排污在线监控系统说,已完成超低排放改造的1、3、4号机组,脱硝效率平均值达90%以上,氮氧化物浓度控制在30毫克/立方米左右;脱硫效率99.3%以上,二氧化硫排放控制在20毫克/立方米左右;烟尘排放控制在2毫克/立方米左右,“这意味着烟囱排出的基本上是水蒸气,实现了‘近零排放’。”

再生利用,探索“变废为宝”

在火力发电公司,“三废”处理永远是头等大事。废气的问题解决了,废水、废渣怎么办?

“绿色发展,不能局限于治理,发展循环经济、走资源节约之路才是长效机制。”副总经理郑丙文说,这是湘潭发电公司领导班子的共识。

公司建成投产了污水集成处理系统,对除灰用水、煤场废水、酸碱污水等100%进行循环回收利用,连冲洗输煤皮带间地面的废水,都要回收、处理、再利用,杜绝企业对周围水体的污染。

粉煤灰、脱硫石膏是火电厂主要废渣,容易造成二次污染。湘潭发电公司设计并建成了全国第一条电力粉煤灰干灰生产线,把煤灰制成修筑高速公路的上好材料,市场抢着要。同时,还开发出脱硫石膏板项目。如今,公司粉煤灰综合利用率达100%,脱硫石膏利用率100%。

“今后连水蒸气都不浪费。”湘潭发电公司发展计划部副主任陈新告诉记者,公司启动了湘潭高新区能源综合利用示范项目,将利用发电产生的水蒸汽向周边工业企业和居民小区集中供热或制冷。目前,已向飞鸽制药输送水蒸汽万余吨,大量减少了制药企业燃烧小锅炉排放的烟尘、二氧化硫和氮氧化物。“绿电,不仅能打造绿色电厂,还将成就绿色城市。”

■链接

我省全力推进清洁发电

2015年,我省全面实施燃煤电厂超低排放和节能改造工作。预计到2018年底,全省所有具备改造条件的现役燃煤发电机组可实现超低排放,烟尘、二氧化硫、氮氧化物排放浓度将分别不高于10、35、50毫克/立方米,其中长株潭地区机组到2020年烟尘排放浓度不高于5毫克/立方米。同时,到2020年,全省现役燃煤发电机组改造后平均供电煤耗低于310克/千瓦时。

在全力推进火电清洁生产同时,我省还加大开发利用风能、太阳能和生物质能等清洁新能源发电的力度。“十二五”以来,先后建成华能苏宝鼎、大唐城步南山等风电基地,常德汉寿、桃源等大型光伏发电项目,桑植、江永等绿色能源示范县项目有序推进,以风电、光伏为代表的新能源开发步入了有序发展“快车道”。

根据《湖南省“十三五”可再生能源发展规划》,实现能源结构清洁转型是重点工作之一,我省将继续有序发展清洁高效火电,全面实施现役燃煤机组节能减排改造升级;优先发展风电、光伏发电等新能源,到2020年全省风电、光伏发电装机将分别达到600万千瓦和300万千瓦。新能源发电量占全省发电总量超过3%。

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