Technique method for producing gasoline by using methanol through one-step method

Abstract

The invention relates to a technique method for producing gasoline by using methanol through a one-step method. The technique method comprises the following steps: (1) heating methanol and water and then feeding in a reactor, wherein the methanol is converted into C1-C12 hydrocarbon products under proper conditions; (2) carrying out heat exchange to the C1-C12 hydrocarbon products and then feeding in a separator, to obtain generation water, non-condensable gas and a liquid product containing C3-C12, wherein the liquid product is pumped into a stabilizing tower through a pump; (3) separating out gasoline fraction and liquefied gas in the stabilizing tower, discharging non-condensable gas from the tower top, wherein the gasoline fraction serves as a gasoline product and a gasoline absorbent; (4) feeding the non-condensable gas in an absorption tower, recovering C<3+> by using the gasoline absorbent, separating out dry gas from the tower top, and returning the gasoline absorbent to the stabilizing tower. According to the technical scheme, the technique method has the advantages of short technique flow, small equipment investment, low operation cost, high methanol conversion rate, high gasoline productivity being more than 36%, and greatly improved product distribution.

Description

technical field [0001] The invention relates to a process for producing gasoline from methanol, in particular to a process for producing gasoline with one-step methanol. Background technique [0002] As my country's oil resources become increasingly tense, my country's dependence on imported crude oil has already exceeded 50%, resulting in rising product oil prices; at the same time, vehicle exhaust emissions have also brought serious environmental pollution. my country's energy structure is characterized by rich coal, little gas, and lack of oil. Therefore, from the perspective of energy security, it is more important to develop oil alternative energy. Converting coal into methanol, and then producing gasoline and other petrochemical products from methanol is one of the effective ways to solve my country's oil shortage. [0003] Mobil Corporation of the United States first invented the methanol-to-gasoline (MTG) technology, applied for a number of patents, and built an MTG...

AI Technical Summary

Problems solved by technology

The existing MTG technology has the disadvantages of long process ...

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