Verfahren zur Entfernung von Schwefelwasserstoff, Ammoniak, Phosphor- und Arsenwasserstoff aus Acetylen

摘要

The invention pertains to a method of removing hydrogen sulfide, ammonia, phosphine and arsine from acetylene in a fixed-bed process, wherein the acetylene to be purified is passed through a number of activated carbon beds in a single- or multistage process, the activated carbon in one bed having been modified with potassium iodide, in another modified with zinc sulfate and in another activated with ammonia. The installation should preferably be designed so that the acetylene to be purified flows first through the activated carbon modified with potassium iodide, then through the activated carbon modified with zinc sulfate and then through the activated carbon activated in an ammonia atmosphere. The claimed method has substantial advantages over the known methods. It is relatively simple in design and does not pose added demands on the apparatus or on the measurement and control equipment.