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Automatic bromine adding device for synthesizing tetrabromobisphenol A and control method thereof

A technology of tetrabromobisphenol and control method, which is applied in the direction of feeding device, control/regulating process, chemical instrument and method, etc., can solve the problems that hidden dangers are difficult to eradicate, product purity cannot be guaranteed, and workers are required to have high sense of responsibility. The effect of reducing labor intensity, stable melting point and improving purity

Active Publication Date: 2018-11-13
山东金宜善新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Tetrabromobisphenol A has many steps in the synthesis process, many types of raw materials, and many influencing factors. At present, domestic manufacturers are manually feeding operations. The standard operating conditions are safety interlocking temperature, liquid level and other indicators, manual control of feeding sequence and Speed, the synthesis process is relatively stable, but during the synthesis dripping time of about 6 hours, workers require a high sense of responsibility, frequently walk around to check the temperature records, estimate the trend of temperature rise, and adjust the hand valve frequently.
If the operation is not serious or there are mistakes, it will be difficult to smoothly complete the indicators of the synthesis process, the purity of the product cannot be guaranteed, and the safety hazard is difficult to eradicate

Method used

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  • Automatic bromine adding device for synthesizing tetrabromobisphenol A and control method thereof
  • Automatic bromine adding device for synthesizing tetrabromobisphenol A and control method thereof
  • Automatic bromine adding device for synthesizing tetrabromobisphenol A and control method thereof

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Effect test

Embodiment 1

[0030] Such as figure 1 A tetrabromobisphenol A synthesis process automatic bromine addition device shown, including a bromine discharge device 1 and a control metering device 2 connected to it through a pipeline to feed into a reaction device 3, and a cooling device is provided outside the reaction device 4. Also includes an automatic regulating device 5; wherein said bromine discharge device includes a bromine metering tank 11 and a main manual valve 12 connected to the outlet of the bromine metering tank; said control metering device includes a manual valve 21, a shut-off valve 22 and a metering pump 23 , the cut-off valve is connected in parallel with the metering pump in series; the reaction device includes a reactor 31 and an agitator 32 arranged inside the reactor; the cooling device includes a frozen brine inlet pipe 41 and a frozen brine return pipe 42 , the frozen brine return pipe is provided with a flow meter 43 and a frozen brine return pump 44 .

[0031] Wherein...

Embodiment 2

[0035] A kind of control method of tetrabromobisphenol A synthetic procedure automatic bromination device The whole process consists of 4 stages:

[0036] S1. The first-stage automatic adjustment system collects the temperature feedback data in the reaction device, and outputs corresponding control signals to the metering pump and the frozen brine return water pump according to the temperature data. When the temperature feedback data in the reaction device reaches the set temperature value into the second stage;

[0037]S2. The automatic adjustment system collects the temperature feedback in the reaction device, the inlet water temperature feedback, the return water temperature feedback, and the data of the frozen brine flowmeter, and forms two control signals according to the constant temperature control algorithm 1, which are respectively output to the metering pump and the frozen brine pump driver , and collect the weight feedback of the bromine metering tank at the same ti...

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Abstract

The invention discloses an automatic bromine adding device for synthesizing tetrabromobisphenol A and a control method thereof, relating to the field of chemical synthesis equipment. The automatic bromine adding device comprises a bromine discharge device, a control metering device connected with the bromine discharge device through a pipeline to feed materials into a reaction device, and an automatic adjusting device, wherein the reaction device is externally provided with a cooling device. The automatic bromine adding device realizes segmentation control, can automatically adjust the amountof bromine added according to the temperature of a reaction still, and can control the flow rate of brine, the weight of bromine added and other data as well as a feeding sequence to ensure a more stable synthesis reaction, thereby improving product purity, lowering labor intensity of workers and improving a safety factor of production.

Description

technical field [0001] The invention relates to the field of tetrabromobisphenol A production, in particular to an automatic bromine addition device in the synthesis process of tetrabromobisphenol A. Background technique [0002] Tetrabromobisphenol A (TBBPA), chemical name 4,4-isopropylidene-bis-(2,6-dibromophenol), is a relatively common brominated flame retardant. As a reactive flame retardant, it can be used in epoxy resin, polyurethane resin, etc.; as an additive flame retardant, it can be used in polystyrene, SAN resin and ABS resin, etc. These resins are widely used in the production of printed circuit boards, electronic potting Materials, housings of household appliances and electronic products. As an additive flame retardant, it is applied to polycarbonate, unsaturated resin, polystyrene and other thermoplastics and some thermosetting plastic resins to impart flame retardancy. [0003] The catalytic reaction stage of tetrabromobisphenol A production and synthesis ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J4/02B01J19/00B01J19/18C07C37/62C07C39/367
CPCB01J4/008B01J4/02B01J19/0006B01J19/0013B01J19/18C07C37/62B01J2219/00087B01J2204/005B01J2204/002C07C39/367
Inventor 方典科李恩魏志潘立海乔连昌
Owner 山东金宜善新材料有限公司
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