Device system and process for cracking and recycling high-carbon alcohol waste liquid

Abstract

The invention relates to a device system and process for cracking and recycling high-alcohol waste liquid, the device system comprises a hydrogenation unit, a cracking unit and a rectification unit which are connected in sequence, a waste alcohol outlet of the hydrogenation unit is connected with an inlet of the cracking unit, and a heavy component outlet of the rectification unit is connected with an inlet of the hydrogenation unit; the process comprises the following steps: introducing waste alcohol discharged after high-carbon alcohol passes through a hydrogenation unit into a cracking unit, introducing a product after cracking reaction into a rectification unit for rectification separation, and recycling obtained heavy components to the hydrogenation unit. The device system provided by the invention is simple and easy to operate, the cracking unit and the rectification unit are directly added in the original high alcohol production process, the process realizes the recycling of more than 80% of target products and byproducts in the discharged waste alcohol liquid, the high alcohol yield is obviously increased, and the device system is easy to popularize and apply.

Description

Technical field [0001] In particular, the invention relates to high carnols, and more particularly to a device system for high carbonous waste liquid cleavage. Background technique [0002] The hydroformylation reaction refers to the process of carbon monoxide and hydrogen to generate a fatty aldehyde of a carbon atom having a plurality of carbon atoms used in catalysts, and the olefin is commonly used in the chemical industry, which can be produced. An important chemical such as alcohol, octanol, 2-propyl alcohol. Refinery or coal chemical enterprises utilize low-carbon olefin resources, producing a plurality of carbon atoms by hydroformylation, and then hydrogenated by condensation reactions or directly hydrogening hydrogen alcohol products. [0003] Due to the presence of impurities in the raw material, the preparation process of high carbonol usually contains two hydrogenation processes in the first hydrogenation process, that is, the first hydrogenation process, that is, the...

AI Technical Summary

Problems solved by technology

But described method has increased raw material fractionation unit before reaction, and flow process is comparatively complicated, has increased production cost

[0005] At present, the recovery technology of high-carbon alcohol waste liquid has problems such as low utilization rate of waste liquid and high energy consumption. Therefore, it is urgent to develop a high-efficiency high-carbon alcohol waste liquid recovery device and its process, which can solve the above problems

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