Method for producing monohydric alcohol from water and olefins

Abstract

The invention provides a method for producing monohydric alcohol from water and olefins, which comprises the following steps: reacting demineralized water and olefins subjected to pressurization and heating in a multistage superimposed fixed-bed reactor at 130-250 DEG C under the pressure of 4.0-8.0 MPaG; and reducing the pressure of the reacted mixture to 0.5-1.0 MPaA, cooling to 40-60 DEG C, and separating to obtain the unreacted olefins, process water and monohydric alcohol product. The multistage superimposed fixed-bed reactor is formed by superimposing a plurality of stages or sections of fixed beds, wherein the number of beds N is greater than or equal to 2 and smaller than or equal to 20. The technique adopts the one-step alcohol synthesis method by multistage superimposed fixed-bed reaction, thereby simplifying the synthesis route and greatly lowering the production cost; the equipment has the advantages of simple structure and low investment; and the catalyst can use a resin catalyst which is nontoxic, harmless and pollution-free, so the production process is environment-friendly.

Description

technical field [0001] The invention relates to the technical field of chemical production, in particular to a process method for generating unit alcohols from water and olefins through a multi-stage superimposed fixed bed. Background technique [0002] Alcohol chemicals are important organic solvents and chemical raw materials, which can be used in medicine, fine chemicals, spices, cleaning agents and other industries. They are widely used and have broad market prospects. [0003] The method of reacting water and olefins to form monoalcohols was the first to use sulfuric acid indirect hydration method, using sulfuric acid as a catalyst, and the reaction was carried out in the liquid phase. high. At present, the production method of monoalcohol is mainly the direct hydration of olefins under the catalysis of resin: the production of monoalcohol from olefins is to use countercurrent or floating bed to produce monoalcohol; or single-stage downstream fixed bed to produce monoa...

AI Technical Summary

Problems solved by technology

The advantages and disadvantages of this method are: the advantage is that compared with the indirect hydration method, the resin catalyst is used, which is non-toxic and harmless, and the production environment is friendly; the disadvantage is that the reactor structure is more complicated, the equipment investment is higher, the product conversion rate is low, and the production cost is higher.

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