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深耕“绿电”十二载

2017-08-30 06:16:35   中国青年网

8月28日,大唐湘潭发电有限责任公司发电机组高负荷运行,为长株潭城市群输送电力。

潭宣 摄

湖南日报记者 彭雅惠 通讯员 肖彬

在长株潭城市群中心,坐落着湖南一大型火力发电企业——大唐湘潭发电有限责任公司(简称“湘潭发电公司”)。

众所周知,火电企业以煤发电,而煤燃烧后会产生少量硫,以致排放的烟气中会含有二氧化硫,是造成酸雨的“罪魁祸首”,不仅污染空气,而且破坏土壤和水质。

8月28日,记者从长沙出发,沿京港澳高速行驶不到1个小时,便抵达湘潭发电公司。走进厂区,办公楼、机组厂房、煤棚、变电站有序布局,道路干净不见尘土,空气清新不闻异味。记者对火力发电的印象完全被颠覆。

“我们是全省唯一一家连续5年获得省环境诚信企业荣誉的发电企业。”湘潭发电公司副总经理郑丙文说。

这家年耗煤量达260万吨的发电企业,如何把火电变“绿电”?

12年技改,造就“近零排放”

“建厂时,发电厂所在地还是湘潭市的远郊,没料想随着发展已变为长株潭城市群中心。”郑丙文介绍说,作为三地最大支撑电源,湘潭发电公司对长株潭地区用电质量、电源安全具有不可替代作用;而处于长株潭国家两型社会示范区和国家大气联防联控重点区域,又把企业推到环保的风口浪尖。

2005年,国家环保电价政策尚未明朗,湘潭发电公司就在全省率先进行烟气排放全脱硫技术改造。

“尽管还背负银行贷款数十亿元,公司仍筹措资金5.5亿元,完成了对所有发电机组的脱硫工程建设,当年即减少二氧化硫排放量4.8万余吨。”郑丙文告诉记者。

脱硫后,湘潭发电公司紧接着打响了脱硝、除尘攻坚战。到“十二五”末,氮氧化物、烟尘污染物排放较“十一五”末分别下降87.74%、76.23%。湘潭发电公司环保设施建设和治污水平已处于全省领先地位。

而此时,国家又提出了更为严苛的节能减排目标要求。根据国家和省要求,湘潭发电公司须于2019年前完成4台发电机组超低排放改造。

“环保赶前不赶后。”郑丙文说,2015年底,湘潭发电公司投资5亿余元,再次在全省率先技改,启动了超低排放改造工程。2016年3、4号机组通过环保验收,大气污染物排放达到了燃气机组水平。

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