Production process of methyl isobutyl ketone

Abstract

The invention provides a production process of methyl isobutyl ketone. The production process includes the following steps that a, hydrogen is conveyed into a water mist catcher for water removal; b, hydrogen and acetone are mixed and conveyed into a reactor to react, an adopted catalyst is strong acid positive ion exchange resin treated through palladium acetate, a reaction product is subjected to water removal again through hydrogen obtained after condensation separation and reused in the reactor for the reaction; c, alkali is added to a condensation product solution; d, the product solution to which alkali is added enters an acetone light-component tower to be separated, a solution produced from the bottom of the tower enters an acetone recovery tower for rectification, negative pressure operation is conducted in the acetone recovery tower, acetone produced from the top of the tower is reused in a fixed bed reactor, coarse MIBK produced from the bottom of the tower enters a phase separator; e, the coarse MIBK enters an MIBK light-component tower for rectification, heavy components produced from the bottom of the tower enter a finished MIBK tower for rectification, and finished MIBK is produced from the lateral line of the finished MIBK tower. Thus, energy utilization is greatly reduced, and meanwhile safe and efficient production can be facilitated while the utilization rate of original raw materials is guaranteed.

Description

Technical field [0001] The invention involves the field of chemical production technology, especially the production process of a methylisobaroblatone. Background technique [0002] MIBK (methylobarl) is usually referred to as isopropyratone, hexone, or 4-methyl-2-pentone. It is a colorless stable and flammable liquid, which has a pleasant smell.1.4%~ 7.5%, it must be prohibited from approaching the source of the fire. When storing, a closed container must be used and kept at low temperature.Avoid long -term contact with the skin.It is slightly soluble with water, but it can be completely dissolved with general organic solvents. It is mainly used as spray paint, nitro fiber, certain fiber ether, camphor, oil, and natural and synthetic rubber solvents. It is an excellent solvent.Then it has the characteristics of not strong volatility and strong temperature in temperature. It is not easy to hydrolyze in the acid -base solution. Therefore, it has a wide range of application areas a...

AI Technical Summary

Problems solved by technology

Although compared with the traditional one-step method, the average conversion rate of acetone has been improved, and the process is simple, with few by-products, and it also improves the maximum recycling of raw materials and energy consumption, but due to the selection of catalysts and various processes in process engineering The parameters are not perfect enough, so it will still lead to a lot of waste of energy and materials, the amount of by-products is still at a high value, and the operating temperature and pressure are high, so there are still greater risks in safety issues

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