摘要
为探索电厂水处理工艺绿色发展的可行途径,针对爪哇7号电厂及电厂所在地区对水和冷源的实际需求,结合爪哇7号电厂水处理系统的技术特点,将水处理系统中的原料和工质进行高效利用和循环利用,探索出一条电厂水处理工艺的绿色发展途径。这条途径的具体设计思路为:将离子交换膜技术引入电厂水处理工艺中,将原来外排的高盐度的海水淡化浓海水,通过电解方式制成氢氧化钠、氯气和氢气,分别作为离子交换树脂的再生用碱、循环水的杀菌灭藻剂和发电机的冷却用氢;将高碱度的海水淡化浓海水直接引入吸收塔进行烟气脱硫,以提高海水脱硫系统的脱硫效率;扩大低温多效蒸馏海水淡化的制水规模,提高浓海水的产量并对外供应高品质的淡水,在降低火电厂冷源损失的同时实现水电联产;加装蒸汽型溴化锂吸收式冷水机组,充分利用机组低品位蒸汽制冷并对外供冷,在降低火电厂冷源损失的同时实现冷电联产。
In order to explore the feasible approach of green development of water treatment process in power plant,in view of the actual demand for water and cold source in Jawa-7 Electric Power Plant and the area where the power plant is located,combined with the technical characteristics of the water treatment system of Jawa-7 Electric Power Plant,the raw materials and working medium in the water treatment system are efficiently utilized and recycled, and a green development path of water treatment process in power plant is discovered. The specific design pattern of the approach is as follows:Introduce the ion exchange membrane technology into the water treatment process of the electric power plant,desalinize the original externally discharged high salinity seawater and make the concentrated seawater into sodium hydroxide,chlorine and hydrogen by electrolysis,which were respectively used as alkali for regeneration of ion exchange resin,bactericide for circulating water and hydrogen for cooling generator;desalinize the seawater with high alkalinity and introduce the concentrated seawater directly into the absorption tower for flue gas desulfurization to improve the desulfurization efficiency of the seawater desulfurization system;expand the water production scale of low temperature multi-effect distillation desalination,improve the production of concentrated seawater and supply high quality fresh water externally to realize cogeneration of water and power while reducing the loss of cold sources in thermal power plant;install the steam type lithium bromide absorption chiller,make full use of the low-grade steam of the unit for refrigeration and external cooling,thus reducing the loss of cold source in thermal power plant and realizing the cogeneration of cooling and power.
作者
聂鑫
Nie Xin(Shenhua Guohua(Indonesia)Jawa Operation&Maintenance Co.,Ltd.,Serang,Banten,42161)
出处
《能源科技》
2020年第6期91-95,共5页
Energy Science and Technology
关键词
绿色化学
水处理工艺
浓海水
水电联产
冷电联产
green chemistry
water treatment technology
concentrated seawater
co-generation of waterand power
co-generation of cooling and power
