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    • 6. 发明授权
    • HCN removal from syngas using chemical and biological treatment
    • 使用化学和生物处理从合成气中除去HCN
    • US08303849B2
    • 2012-11-06
    • US12942833
    • 2010-11-09
    • Robert Hickey
    • Robert Hickey
    • C10K1/08
    • B01D53/1425B01D53/58B01D2251/70B01D2257/406B01D2257/408C02F3/006C02F3/302C02F2101/16C02F2101/163C02F2101/18C02F2103/18C02F2209/001C02F2209/06C02F2305/06Y02A50/2346
    • A method of HCN removal from syngas including treating a hot syngas stream for conversion to chemical products by removing various components from the hot syngas stream by: passing the hot syngas stream to a scrubber; adding aldehyde to a circulating scrubber water; capturing ammonia and HCN in the circulating scrubber water and condensing water from the hot syngas stream into the circulating scrubber water; withdrawing a scrubber waste water effluent from the scrubber comprising absorbed ammonia, ammonium, and absorbed HCN, and glycol nitriles, formed from the reaction of the aldehydes with HCN, from the scrubber; withdrawing a treated syngas stream effluent from the scrubber having a reduced concentration of ammonia and HCN; and, passing at least a portion of the scrubber waste water effluent stream to a biological treatment zone for the removal of ammonia, absorbed HCN, and glycol nitriles.
    • 一种从合成气中除去HCN的方法,包括通过以下方法从热合成气流中除去各种组分来处理热合成气流以转化为化学产物:将热合成气流送至洗涤器; 将醛加入到循环洗涤器水中; 在循环洗涤器水中捕集氨和HCN,并将来自热合成气流的水冷凝成循环洗涤器水; 从洗涤器中抽出洗涤塔的废水排出物,其中包括吸收的氨,铵和被吸收的HCN,以及由醛与HCN反应形成的乙腈腈; 从具有降低的氨和HCN浓度的洗涤器中取出经处理的合成气流流出物; 并且将洗涤器废水流出物流的至少一部分通入生物处理区以除去氨,吸收的HCN和乙二醇腈。