原料煤は硫黄分4.5%，含氯2.5%，用于气化。システム選材においてはどのような注意点がありますか？

2017-01-13View Original

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原料煤は硫黄4.5%，含氯2.5%，用于气化。系统选材方面有什么注意的的？

Reply #22017-01-13

高硫黄、高氯这是气化中最头疼的。高硫黄易造成灰水pH的降低，除了产生腐蚀，还会降低硅胶的溶解度，而硅胶含量太高易使沉降槽灰水发白，而单组份的阳离子聚丙烯酰胺对于硅胶的絮凝沉降效果很差。高氯的后果就是灰水和黑水中氯根的增加。灰水系统温度最高可达35度，如此高的温度配以高极性氯根，使系统腐蚀更加增加，尤其是不锈钢材质。为了降低灰水系统氯根，最好的办法就是增加排污。期待有好的技术出现！

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原料煤は硫黄分4.5%，含氯2.5%，用于气化。システム選材においてはどのような注意点がありますか？

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