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发明公开
CN103599816A 一种离线清洗钙中毒SCR脱硝催化剂的清洗剂及清洗方法 失效 - 权利终止 转让

一种离线清洗钙中毒SCR脱硝催化剂的清洗剂及清洗方法
摘要：
一种离线清洗钙中毒SCR脱硝催化剂的清洗剂及清洗方法，该清洗剂是由多氨基多羧基类螯合剂、氨水以及去离子水混合而成的；将钙中毒SCR脱硝催化剂浸入配制好的清洗剂中清洗30～120分钟；然后漂洗、干燥，最后在300℃～500℃下煅烧以除去残留在SCR脱硝催化剂中的清洗剂，即得到清洗后的SCR脱硝催化剂。本发明清洗剂来源广泛，价格低廉，便于规模化生产。其清洗方法适合于SCR脱硝催化剂模块的整体清洗。经试验证明，采用本发明制得的清洗剂对钙中毒SCR脱硝催化剂进行清洗，其清洗效果在50%～93%；因此，本发明能够在SCR脱硝催化剂离线再生时对SCR脱硝催化剂中的硫酸钙具有良好的去除作用。
摘要（英）：

The invention relates to a cleaning agent and a cleaning method for off-line cleaning a calcium-poisoned SCR (Selective Catalytic Reduction) denitration catalyst. The cleaning agent is formed by mixing a polyamino polycarboxyl chelating agent, ammonium water and deionized water. The cleaning method comprises the following steps: immersing the calcium-poisoned SCR denitration catalyst in the prepared cleaning agent to clean for 30-120 minutes; then, rinsing and drying; finally, calcining at 300-500 DEG C to remove the cleaning agent in the SCR denitration catalyst so as to obtain the cleaned SCR denitration catalyst. The cleaning agent provided by the invention is wide in source, low in price and convenient to production on a large scale. The cleaning method is suitable for integrally cleaning an SCR denitration catalyst module. Tests verify that the cleaning agent provided by the invention is used for cleaning the calcium-poisoned SCR denitration catalyst, and the cleaning effect is ranging from 50-93%. Therefore, the cleaning agent provided by the invention has a good removal effect to calcium sulfate in the SCR denitration catalyst when the SCR denitration catalyst is generated off-line.

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