胡景福,郭显平

• 1:台州发电厂
• 2:台州发电厂 浙江台州318016
• 3:浙江台州318016

摘要(Abstract)：

燃煤电厂灰水回用对环保、节水和提高效益都有着重要意义,但系统结垢问题突出。基于灰水防垢机理,提出采用海水代替淡水冲灰防垢的技术方案。指出利用海水的高离子强度和大pH缓冲能力,代替淡水冲灰防垢是可行的。选用灰水比为1:5、补充水率20%的海水冲灰工艺经济可靠,对海滨电厂有应用价值。
The ash-water recycling system in the power plant is of great importance to water saving and environmental protection and economic benefit.However,the serious problem of scaling occurs in the ash-water recycling system,and the solution to prevent scaling is the key to successful recycling the ash-water.Based on the scaling prevention mechanism of the ash-water system,this paper presents a technical project which adopts the seawater instead of the fresh water to prevent the scaling.Due to its high salinity,low activity coefficient and effective decreasing the pH value.The test results show:the seawater is introduced into the ash-water recycling system,shows the seawater prevents the scaling effectively and economically,when the mixture ratio of ash to water is 1 to 5,the rate of water supply is about 20%,the process is in stale and reliable operation.The technique of adopting the seawater to prevent the scaling finds good reference to the coastal power plants.

关键词(KeyWords)： 灰水;回用;海水;防垢
ash-water recycling;seawater;scaling prevention

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 胡景福,郭显平

DOI: 10.19585/j.zjdl.2007.05.004

参考文献(References)：

• [1]宋晖,曹顺安,范圣平,等.火电厂水力冲灰系统防垢技术研究现状与发展趋势[J].华北电力技术,2004(9):50-54.
• [2]庄贤盛.海水与淡水冲灰系统灰水闭路循环结垢机理[J].广东电力,2001,14(5):22-24.
• [3]周晓蔚,陈广海,周柏青.火电厂灰场回水系统防垢技术研究[J].华北电力技术.2004(2):8-11.
• [4]陈敏,唐永明,杨文忠,等.燃煤电厂冲灰水闭路循环系统的结垢及防止[J].工业用水与废水,2006,37(1):4-6.