| 摘要 |
A method for retrofitting a methanol plant comprising of: a) installing a carbon dioxide, carbon monoxide and hydrogen separation unit in association with an original methanol plant comprising: i) at least one reformer for converting a hydrocarbon to a syngas stream containing carbon dioxide, carbon monoxide and hydrogen, and ii) a methanol synthesis loop for converting hydrogen and carbon monoxide from the syngas stream to methanol; b) installing a line to divert at least part of the syngas steram to the seperation unit to separate all or part of the syngas stream into respective streams rich in carbon dioxide, carbon monoxide and hydrogen; c) adapting the original methanol plant for supplying at least a portion of the carbon dioxide rich stream to the reformer, to the methanol synthesis loop, or a combination; d) adapting the methanol synthesis loop for operation at a redced throughput relative to the original methanol plant; and e) installing a reactor for reacting at least a portion of the carbon monoxide rich stream from the separation unit with methanol from the methanol synthesis loop to form a product selected from the group consisting of acetic acid, acetic anhydride, methyl formate, methyl acetate and various combinations. |
