PL6598B1 - A method of producing methanol and other oxygen-containing organic compounds. - Google Patents

Description

In recent times, it has been found that the action of appropriate contact masses on a mixture consisting of carbon monoxide and hydrogen can be synthetically produced at higher temperature and high pressure, methanol and other oxygen-containing organic compounds. In carrying out this process, it is often the case that the activity of the contact mass diminishes more or less quickly. Even lining the hot copper chamber to protect the iron walls from carbon deposition caused by the decomposition of carbon monoxide with hydrogen is not conducive to an increase in activity. This is because it turned out that the mass activity is negatively influenced by iron volatile compounds, and above all by carbon dioxide, or by the resulting iron-containing deposits. It has now been discovered that these inconveniences can be removed when heated parts apparatus in contact with carbon monoxide, as well as other metal parts inside, such as contact body supports, electric heaters, heat exchangers, be equipped with metal sheaths or with sheaths made of a metal table or metals, sufficiently under operating conditions resistant to carbon monoxide, and in addition, since in the cooler parts of the apparatus, take appropriate measures to prevent the penetration of iron particles or its compounds into the hot zone containing the contact. This is achieved in that the heated parts are made of copper, silver or aluminum or alloys of these metals, or that the parts are covered or lined with these metals. Also, special grades of steels with high levels of chromium, manganese, tungsten, vanadium or molybdenum are suitable for this purpose; the above-mentioned metal coatings may also be used. For cooler or colder parts of the apparatus, such as high-pressure wire, etc., metals or metal alloys as indicated above may also be used for lining or coating; among others, low-melting metals, such as zinc, tin, lead or their alloys, or other permanent coatings, such as asphalt, enamel or as regards aluminum, it should be noted that the temperature should not be too high. high. The pressure, in particular the partial pressure of carbon monoxide, plays a major role in the case of aluminum in general, and the higher the temperature the higher the lower the partial pressure of the carbon monoxide. Usually the highest temperature when aluminum is used is around 550 ° C. As for the particular grades of steel, it is possible to mention, for example, Krupp steel of the V 2 A brand, containing 20% chromium, 7% nickel, 0.27% carbon, 0.45% silicon and 0, 35% manganese. A similar material can advantageously be used to produce electric resistors for heating, and if necessary, heating a mixture of gases. The above-mentioned coatings of chrome, tungsten and the like can be produced in a satisfactory manner on by electroplating, e.g. by electroplating. In order to protect the wall from the action of heated and compressed hydrogen at the same time, it is possible to use this method with advantage, including the known methods of working with high-pressure hydrogen, i.e., for example, by using a copper pipe a plaque-coated or jacketed iron tube, further lined inside with a tube with thin walls of metals above the recessed or lined with these metals. PL PL

Claims (5)

1. Patent claims. 1. A process for the production of methanol and other oxygen-containing organic compounds by catalytic reduction of carbon monoxide with hydrogen at high temperature and high pressure, characterized by the fact that the reactions are carried out in an apparatus in which both the hot reaction vessel and other hot or cold parts, which come into contact with carbon monoxide, are made of metals or metal alloys or covered or lined with such metals or alloys or a non-metallic material, which material, under the conditions prevailing in the relevant parts of the apparatus, they show sufficient strength and do not form volatile compounds with carbon monoxide. 2. Implementation of the method according to claim 1, characterized by the fact that copper or silver or alloys of these metals are used for the production or lining of hot and in contact with carbon monoxide parts of the apparatus, for parts of the apparatus less hot or cold - copper or silver, or metals low-melting like aluminum, tin, zinc or lead, etc. or alloys of these metals. 3. A variant of the method according to claim 3. The method of claim 1, wherein the hot parts of the apparatus in contact with carbon monoxide are made of aluminum or its alloys or are covered with aluminum or its alloys. 4. A variant of the method according to claim 1, characterized by the fact that the hot parts of the apparatus in contact with carbon monoxide are made of special grades of steel, containing significant amounts of chromium, manganese, tungsten, vanadium or molybdenum, or these parts are made of these grades steel. 5. A variant of the method according to claim The apparatus of claim 1, wherein the surfaces of the apparatus exposed to carbon monoxide are coated with chromium, manganese, molybdenum, tungsten or uranium. A variant of the process according to claim 1, characterized in that the less hot or cold parts of the apparatus are covered with paint such as asphalt, enamel or the like with materials. I. G. Farbenindustrie Aktiengesellschafh Zastepca: M. Skrzypkowski, patent attorney, Printing by L. Boguslawski. Warsaw. PL PL