Method for producing synthesis gas for methanol production

摘要

Method for producing synthesis gas for methanol production The present invention relates to a method for producing synthesis gas from a hydrocarbon containing feed, which synthesis gas is particularly suitable for subsequent use in methanol production. In this method, a feed (100) is divided into two streams, wherein one stream is subjected to catalytic partial oxidation (CPO) (2) and the other stream is subjected to steam reforming (5) followed by a water gas shift reaction (51). The two streams are then recombined and can be used further in methanol synthesis (6). The recombined stream preferably has an R ratio, being a molar ratio (H2−C02)/(CO+C02), in the range of 1.9-2.2 and preferably about 2. The invention further relates to a method for producing methanol from a hydrocarbon containing feed, wherein first synthesis gas is obtained according to the method of the invention, which synthesis gas is further used to produce methanol. Also, the invention relates to a method of adapting an existing methanol plant to the methanol production process of the invention.

主权项

1. Method for producing synthesis gas from a hydrocarbon containing feed, comprising the steps of:
(i) dividing a hydrocarbon containing feed into first and second hydrocarbon feeds, (ii) subjecting said first hydrocarbon feed to catalytic partial oxidation (CPO) yielding a first reaction product mixture comprising H2, CO and CO2, (iii) subjecting said second hydrocarbon feed to steam reforming followed by a water gas shift reaction to yield a second reaction product mixture, and (iv) combining said first and said second reaction product mixtures to yield a synthesis gas for methanol synthesis, wherein the first reaction product mixture comprises less than 10% CO2 on dry basis.