Pinacolone continuous production system
A production system and reactor technology, applied in the field of pinacolone continuous production system, can solve the problems of low continuous degree and achieve the effect of improving conversion efficiency
Pending Publication Date: 2020-11-10
南通鸿富达利化工有限公司
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a continuous production system of pinacolone, which can solve the problem of adopting independent feeding mode in the production of general pinacolone, intermediate products need to be transported, and effective circulation reaction cannot be carried out, resulting in continuous low-level problem
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[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0025] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...
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The invention relates to a pinacolone continuous production system. The pinacolone continuous production system is characterized by comprising a continuous addition reaction module and a continuous condensation reaction module, according to the method, the isopentene and the hydrochloric acid in the raw materials of the pinacolone are subjected to the addition reaction, the isopentene and the hydrochloric acid are cooled through the cooler, then the cyclic addition reaction is carried out under the pumping of the addition reaction circulating pump, and the excessive hydrochloric acid and the two-stage addition reactors are adopted, so that the sufficient reaction of the isopentene is guaranteed; the cyclic continuous control is adopted, so that the conversion rate of the isopentene can reach 99 percent or above; the output end of the buffer tank and the output end of the formaldehyde are directly connected in parallel and cooled through the condensation cooler, then the cyclic condensation reaction is performed under the pumping of the condensation reaction circulation pump, the sufficient reaction of the dichloroisopentane is ensured by adopting excessive formaldehyde, and the conversion rate of the dichloroisopentane can be over 99 percent by adopting cyclic continuous control. The conversion efficiency of the product is improved, and continuous production is achieved.
Description
technical field [0001] The invention relates to the technical field of pinacolone production, in particular to a continuous pinacolone production system. Background technique [0002] Pinacolone, namely 3,3-dimethyl-2-butanone, is an important raw material for the production of pesticides such as fenzaine and pleiotrope, and an intermediate for various fine chemical products such as medicines and dyes. In the general pinacolone production process, the addition of isopentene and hydrochloric acid is used to generate 2-chloroisopentane, and then 2-chloroisopentane is condensed with formaldehyde to produce pinacolone and hydrochloric acid; [0003] In the general addition reaction and condensation reaction of pinacolone, the degree of autocontinuity is low, which leads to a problem that the conversion rate of isopentene into pinacolone is low. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a continuous production ...
Claims
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Login to View More IPC IPC(8): C07C45/60C07C49/04C07D319/06C07C17/08C07C19/01
CPCC07C17/08C07C45/60C07D319/06C07C19/01C07C49/04
Inventor 葛八权
Owner 南通鸿富达利化工有限公司