Abstract: The invention pertains to a novel additive for fuels comprising iso-propanol in an amount of from 60-70 Vol.-%, diesel and gasoline each in an amount of from 10-20 vol.-% and water in an amount of from 1-5 vol.-%. In another aspect the composition comprises Iso-propanol in an amount of from 60-70 vol.-%, lineseed oil in an amount of from 15-25 vol.-%, gasoline fuel in an amount of from 10-20 vol.-%, and water in an amount of from 1-5 vol.-%. The invention further relates to the use of the said additive in reducing carbon monoxide (CO) and unburnt hydrocarbons (HC) levels from emissions of combustion engines.

Abstract: The invention pertains to a novel additive for fuels comprising iso-propanol in an amount of from 60-70 Vol.-%, diesel and gasoline each in an amount of from 10-20 vol.-% and water in an amount of from 1-5 vol.-%. In another aspect the composition comprises Iso-propanol in an amount of from 60-70 vol.-%, lineseed oil in an amount of from 15-25 vol.-%, gasoline fuel in an amount of from 10-20 vol.-%, and water in an amount of from 1-5 vol.-%. The invention further relates to the use of the said additive in reducing carbon monoxide (CO) and unburnt hydrocarbons (HC) levels from emissions of combustion engines.

Abstract: Disclosed is a method for liquefying a hydrocarbon-rich stream, in particular a natural gas stream, by indirectly exchanging hear with the coolant mixture of a coolant mixture circuit. In said method, the coolant mixture is condensed in two or more stages, is divided into at least one lower-boiling and at least one higher-boiling coolant mixture fraction, and the coolant mixture fractions are evaporated at different temperature levels against the hydrocarbon-rich stream that is to be cooled and liquefied and are then combined before being condensed once again. The coolant mixture fractions are not entirely evaporated during normal operation and are preferably not superheated. Preferably, at least 1 to 10 percent by weight of the total amount of the coolant mixture are not evaporated.

Abstract: In the liquefaction of a hydrocarbon by indirect heat exchange with the refrigerant mixture of a refrigerant mixture cycle, the refrigerant mixture being compressed in multiple stages, the compressed refrigerant mixture (23) is at least partially condensed (E4) downstream of the penultimate compressor stage and is fractionated (D4) into a higher-boiling liquid fraction (26) and a lower-boiling gas fraction (24). The lower-boiling gas fraction (24) is compressed to the final pressure, partially condensed (E5) and fractionated (D5) into a lower-boiling gas fraction (10) and a higher-boiling liquid fraction (27). The higher-boiling liquid fraction (27) is added to the partially condensed refrigerant mixture stream (23), and the gas fraction (10) forms the lower-boiling refrigerant mixture fraction and the liquid fraction (26) forms the higher boiling refrigerant mixture fraction of the refrigerant mixture cycle.

Abstract: For the low-temperature separation of a gaseous mixture containing essentially hydrogen, C.sub.1+ -hydrocarbons, and carbon monoxide, resulting in a purified gaseous mixture to be processed, after the low-temperature separation, in methanol synthesis, the gaseous mixture is cooled and subsequently fed to a scrubbing column to scrub out the C.sub.1+ -hydrocarbons with liquid CO. A product containing essentially hydrogen and carbon monoxide is obtained at the head of the scrubbing column. The resultant liquid CO, loaded essentially with the C.sub.1+ -hydrocarbons, is withdrawn as the sump product from the column and introduced into a C.sub.1+ -CO separating column.