Production process of methyl isobutyl ketone

A technology of methyl isobutyl ketone and production process, applied in the field of production technology of methyl isobutyl ketone, can solve the problems of high value, high operating temperature and pressure, waste of energy and materials, etc., so as to reduce the risk coefficients, the effect of saving resources and energy

Active Publication Date: 2015-12-09
ZHEJIANG OCEANKING DEVELOPMENT CO LTD
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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 va...

Method used

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  • Production process of methyl isobutyl ketone
  • Production process of methyl isobutyl ketone

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Embodiment Construction

[0018] Reference Figure 1 to Figure 2 Further explanation of the embodiments of the present invention.

[0019] The production process of a methylobaroblatone of the present invention, including the following steps, acetone with a purity of 98.5%is first heated to 90 ° C, and the hydrogen is removed from the hydrogen water fog catcher and then heated with pure preheating with pure preheating.The lattone connection is entered into a fixed bed reactor for reaction, which can increase the concentration of hydrogen in the fixed bed reactor and increase the reaction rate.The fixed bed reactor is equipped with a catalyst with a "strong acidic cationic ion exchange resin" treated by acetate. The reaction temperature is 90 ° C to 120 ° C (excluding 120 ° C), and the reaction pressure is 2.65-3.1MPa.Water cools down the fixed bed reactor, the transformation rate of acetone is greater than 30%, and the selectability of MIBK is greater than 94%. At the same time, it saves a lot of energy, an...

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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...

Claims

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Application Information

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IPC IPC(8): C07C49/04C07C45/73
CPCC07C45/73C07C49/04
Inventor 王时良叶益军郑金成吴尔旭
Owner ZHEJIANG OCEANKING DEVELOPMENT CO LTD
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