A stirred tank for the preparation of tetrabromobisphenol A

A technology of tetrabromobisphenol and stirring tank, which is applied in the field of stirring tank, can solve the problems of stirring motor stop, large reverse meshing force, structural damage, etc., and achieve the effect of reducing transmission resistance, reducing rotation speed and improving mixing effect

Active Publication Date: 2022-02-18
山东金宜善新材料有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide a stirred tank for the preparation of tetrabromobisphenol A, to solve the problem that the opposite meshing force between the forward half gear and the reverse bevel gear in the forward and reverse switching state in the prior art is too large, if The technical problem of not slowing down the stirring components, or causing structural damage or even the extreme speed braking of the stirring motor

Method used

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  • A stirred tank for the preparation of tetrabromobisphenol A
  • A stirred tank for the preparation of tetrabromobisphenol A
  • A stirred tank for the preparation of tetrabromobisphenol A

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Embodiment Construction

[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them.

[0032] The components of the embodiments of the invention generally described and shown in the figures herein may be arranged and designed in a variety of different configurations. 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.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the...

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Abstract

The invention discloses a stirred tank for preparing tetrabromobisphenol A, and relates to the technical field of stirred tanks, including a stirred tank body, a cover plate installed on the top of the stirred tank body, and a discharge device installed at the bottom of the stirred tank body mechanism, a plurality of feeding pipes are installed on the cover plate, a lifting mechanism is fixed on the top of the cover plate, a transmission mechanism is installed on the lifting end of the lifting mechanism, and a transmission mechanism is connected to one side of the transmission mechanism. The drive mechanism, the bottom end of the transmission mechanism passes through the bottom inner wall of the cover plate and is connected to the stirring shaft, and there are multiple sets of stirring mechanisms distributed equidistantly on the peripheral outer wall of the stirring shaft, and three stirring mechanisms form one group and distributed in a circle. The invention can increase the motion resistance between the stirring tube and the reaction liquid, so that the stirring shaft can quickly reduce the rotation speed, and reduce the transmission resistance when the motor restarts to drive the stirring shaft counterclockwise, thereby protecting the motor.

Description

technical field [0001] The invention relates to the technical field of stirred tanks, in particular to a stirred tank used for preparing tetrabromobisphenol A. Background technique [0002] Tetrabromobisphenol A is a derivative of bisphenol A. It is a white powder and is mainly used as an additive for plastic products. It is one of the commonly used brominated flame retardants. Tetrabromobisphenol A is produced by bromination of bisphenol A. According to different reaction conditions, it can be divided into direct bromination method, catalytic bromination method, oxidative bromination method, etc. Oxidative bromination method is one of the most commonly used preparation methods. This method is carried out in a solvent in the presence of hydrogen peroxide. Add bisphenol A, n-octanol and water into the stirred tank, stir, control the temperature at 25°C, add bromine dropwise within 45 minutes, add hydrogen peroxide, and keep warm for 10 minutes. Raise the temperature to 80...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F27/90
Inventor 方典科魏志潘立海王宝军杨华瑞
Owner 山东金宜善新材料有限公司
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