PL2385B1 - A method of producing methyl alcohol or other oxygen-containing organic compounds from carbon oxides. - Google Patents

Description

Priority: April 5. 1923 (Mute ') It has been shown that the action of suitable catalysts on a gas mixture consisting of carbon monoxide or dioxide and hydrogen or hydrocarbon under pressure and high temperature can produce alcohol with good yield methyl, and sometimes other oxygen organic compounds. In carrying out this process in practice, difficulties often arise, such as the fact that the mass of the loss becomes active rapidly or that undesirable side reactions arise, for example, hydrocarbons are produced in a predominant amount. As the research has shown, the reason for this phenomenon lies in the insufficient purification of gases, despite the fact that the purification was carried out in an ordinary manner with great care, because in this case it is sometimes necessary to free not only sulfur organic compounds, but also from volatile iron compounds: in particular, traces of iron carbonyl should be removed from the gases, only after the gases have been purified to such an extent that even the most sensitive analytical agents cannot detect organic sulfur compounds and volatile ferric compounds, the contact mass works for quite a long time and produces methyl alcohol and similar compounds. This method allows the use of a variety of industrial gases. Most preferably the composition of these gases should be such that the amount of hydrogen exceeds the amount of carbon monoxide. For example, it is possible to use a water gas containing 40% carbon monoxide, 55% hydrogen, 4% nitrogen and 1% hydrocarbons, or gases obtained by distilling coal, such as: light gas, coke oven gas, or gas obtained in low temperature coking or a mixture of these gases, adding to it before or after purification, as necessary, the missing amounts of individual components, e.g. hydrogen or carbon monoxide, or removing excess of some of them until the desired gas composition is reached, for example, per 1 volume of carbon monoxide, 3 to 4 volumes of hydrogen. Unsaturated and aromatic hydrocarbons may be removed prior to the final purification. For the final purification, the most effective working methods are usually employed for the final purification prior to removing the major amount of contaminants. For example, in order to absorb carbon oxysulphide (COS) and other organic sulfur compounds, a sufficiently large amount of activated carbon is used, or soda or potassium lime is decomposed, or both are used sequentially simultaneously. You can also pass the gasses hot over a mass containing alkaline. The most effective method of purification is that the gases to be treated, when mixed with water vapor, are passed over the contact mass, suitable for the partial conversion of carbon monoxide and water vapor into carbon dioxide and hydrogen, as a result of which sulfur organic compounds decompose The removal of iron carbonyl from gases, which is not so easily removed from contact poisoning bodies during normal cleaning, requires a special cleaning process to produce hydrogen sulphide, which can easily be removed. For this purpose, the gases are led through a layer of activated carbon, which absorbs the iron carbonyl, or passed hot over the mass containing copper or also over the previous contact, and the resulting iron mist is removed without filtering the mixture. gases can be compressed under normal pressure or with prior compression. The contact mass should also not contain sulfur and other harmful components; for this purpose, it has turned out to be most advantageous to add to the mass a certain amount of strong bases or ingredients that produce the latter, so that small amounts of sulfur, chlorine, phosphorus, arsenic, and other ingredients do not completely or damage only insignificantly. this could be, for example, copper. PL

Claims (2)

Patent claims. 1. The catalytic process for the production of methyl alcohol and other oxygen-containing organic compounds from carbon oxides by reaction with hydrogen or hydrocarbon at high temperature and high pressure, a significant difference between which the gas mixture reacts It is completely freed not only from ordinary bodies poisoning the contact mass, but also from volatile iron compounds. 2. The method according to claim In the presence of a contact mass, Badische Anilin - & Soda - Fabrik. 1, characterized by the fact that the purification of the reaction gas mixture is effected by steam in the presence of a contact mass. Deputy: M. Skrzypkowski, * patent attorney. Print by L. Boguslawski, Warsaw. PL