Grease epoxidation reaction device

Abstract

The invention provides a grease epoxidation reaction device and belongs to the technical field of epoxy grease production. The device comprises a reaction tank, an intermediate tank, a circulating pump and a hydraulic cavitation device which are sequentially connected through reaction circulating pipelines to form a circular reaction system. A material circulating outlet is formed in the upper end of a shell cover of the reaction tank, a material circulating inlet is formed in the lower end of the shell cover, and the material circulating outlet and the material circulating inlet are connected with the reaction circulating pipelines. A material inlet is formed in the input end of the circulating pump, the reaction tank is a tube nest type reactor, a tube nest and a baffle plate are arranged in the reaction tank, a first heat exchange medium inlet and outlet and a second heat exchange medium inlet and outlet are formed in the lower end and the upper end of a barrel of the reaction tank, and valves are correspondingly arranged on the pipelines. The device is simple in structure, reasonable in design, low in investment, low in energy consumption and production cost, high in product quality and beneficial for engineering enlargement.

Description

technical field [0001] The invention belongs to the technical field of epoxy grease production, in particular to a grease epoxidation reaction device. Background technique [0002] In the industrial production process of epoxy oil, the epoxidation reaction is the main reaction in the production process system of epoxy oil ester, and the epoxidation process equipment must ensure: 1 The oil is fully mixed with the hydrogen peroxide and formic acid in the water phase to ensure non-toxicity The phase interface of the homogeneous reaction promotes the rapid reaction; 2. The epoxidation reaction is a strong exothermic reaction, which requires the equipment to remove the reaction heat in a timely and rapid manner; Replication to achieve capacity expansion. [0003] Existing grease epoxidation reaction devices mostly use mechanical stirring reactors (Chinese patents CN201482479U, CN101914219B, CN102391210A, CN101139328B, CN101284821A, CN100580025C, CN100590188C, CN101928267B, CN102...

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Problems solved by technology

[0003] Existing grease epoxidation reaction devices mostly use mechanical stirring reactors (Chinese patents CN201482479U, CN101914219B, CN102391210A, CN101139328B, CN101284821A, CN100580025C, CN100590188C, CN101928267B, CN102675254A mainly rely on paddles in the stirring process to achieve mixing), It is easy to form a small cycle, resulting in insufficient contact and mixing of oil, hydrogen peroxide, and formic acid, so that the reaction efficiency is low; in addition, the stirring structure is adopted, the larger the reaction tank, the greater the stirring power, which is not conducive to industrial scale-up

Chinese patent CN102993132B uses a hydraulic cavitation reactor to achieve effective mixing of two phases, but there are still some defects in heat transfer

Moreover, in the traditional stirred tank reaction device, the disturbance between the material and the cooling medium is small, resulting in a small heat transfer coefficient, which is not conducive to timely and effectively removing the heat released during the reaction process, which in turn leads to an increase in side reactions and affects Quality of products

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