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中、小型氨厂广泛采用铜氨液精洗原料气中少量的 CO、CO_2、H_2S及 O_2等有害成份,保护氨合成催化剂。铜氨液含有未反应的氨和醋酸外,还含有醋酸铜络四氨(Cu(NH_3)_4AC_2和醋酸亚络铜二氨 Cu(NH_3)_2AC。由于铜氨液中含有大量Cu~+和 Cu~(++),一般认为对碳钢及低合金钢是没有腐蚀作用的,有关这方面的报道也很少。但我们频繁地发现了铜氨液对高压容器有腐蚀损伤,本文对此作简要分析。1 铜洗工段高压容器工作条件分析铜氨液在铜洗塔中自上而下喷
Small and medium-sized ammonia plants widely use copper ammonia liquid to purify the harmful components such as CO, CO_2, H_2S and O_2 in the feed gas to protect ammonia synthesis catalyst. Copper ammonia solution contains unreacted ammonia and acetic acid, but also contains Cu (NH_3) _4AC_2 and Cu (NH_3) _2AC. The Cu_ (NH_3) _2AC contains Cu ~ + and Cu ~ (++), generally believed that there is no corrosion of carbon steel and low alloy steel, there are few reports on this area, but we often found that copper ammonia solution has a corrosive damage to high pressure vessels, this paper Brief Analysis .1 copper washing section of high-pressure vessel working conditions analysis of copper ammonia solution in the copper wash tower from top to bottom spray