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Device and method for high-efficiency production of chlorinated paraffin

A technology for chlorinated paraffin and a production device, which is applied to the field of high-efficiency production devices for chlorinated paraffin, can solve the problems of unguaranteed product color, easy escape of chlorine gas bubbles, low utilization rate of chlorine gas, etc. The effect of reducing production costs and increasing productivity

Inactive Publication Date: 2018-12-18
安徽绿色谷创客空间股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No matter which method is used for production, high reaction temperature, long reaction time, low utilization rate of chlorine gas, serious chlorine leakage in tail gas, and unguaranteed product color are all common problems.
The traditional chlorination method is to directly use the chlorine pipe to pass chlorine gas into the reaction solution in the chlorination tank. The chlorine gas in the reaction solution is mixed and reacted by free diffusion and convection. The contact area is small, and the chlorine gas bubbles are easy to escape. out, the reaction efficiency is low

Method used

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  • Device and method for high-efficiency production of chlorinated paraffin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation of Chlorinated Paraffins in Batch Production

[0019] a. Add liquid paraffin oil in the 6300L kettle 1, open the external circulation pump 2 and circulate the reaction solution in the chlorination kettle 1;

[0020] b. open the chlorine pipe connected to the gas feed port 42 on the gas-liquid mixer 4 and start to feed chlorine, and chlorine gas will be sucked into the gas-liquid mixer 4 by the negative pressure formed in the gas-liquid mixer 4 by the circulating reaction solution Pass in the chlorination still 1 after internal mixing, reaction;

[0021] c. Keep the flow rate of the circulating pump 2 and the amount of chlorine flowing between 1:1 and 1:3 for chlorine flow, and adjust the circulating water of the heat exchanger 3 to maintain the temperature in the chlorination tank 1 at 70-90°C;

[0022] d. Observe the density change of the reaction liquid in the chlorination kettle 1, and the reaction ends after the density is qualified.

[0023] The chlor...

Embodiment 2

[0025] Preparation of Chlorinated Paraffins in Continuous Production

[0026] a. Put six 6300L chlorination tanks in series for chlorination production, continuously add paraffin oil to the first chlorination tank, and the reaction liquid will enter the series of chlorination tanks in sequence through overflow, and open the external circulation pump of each tank to circulate in the tank The reaction solution;

[0027] b. Open the chlorine pipe to start the chlorine flow, and use the negative pressure formed by the circulating reaction liquid in the gas-liquid mixer to suck the chlorine gas into the mixer for mixing, and pass it into the kettle after reacting;

[0028] c. Control the amount of paraffin oil feed (m 3 / h) and chlorine flow (m 3 / h) The ratio is 1:1.5~1:2, adjust the circulating water to maintain the temperature in the chlorination tank at 70~90°C;

[0029] d. Observe the density change of the reaction solution in each chlorination tank, properly adjust the amo...

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Abstract

The invention discloses a device and a method for high-efficiency production of chlorinated paraffin, and relates to the technical field of preparation of chlorinated paraffin. The production device comprises a chlorination kettle, a circulation pump, a heat exchanger and a gas-liquid mixer, the gas-liquid mixer is provided with a gas inlet and a liquid inlet, the discharging port of the gas-liquid mixer is connected to the feeding port of the chlorination kettle through a pipeline, the discharging port of the chlorination kettle is connected to the inlet of the circulation pump, the outlet ofthe circulation pump is connected with one end of the heat exchanger, and the other end of the heat exchanger is connected with the liquid inlet of the gas-liquid mixer through a pipeline. The production method comprises the following steps: chlorine is fully mixed and reacted with paraffin oil in the gas-liquid mixer, and the obtained reaction product enters the chlorination kettle, and undergoes a chlorination reaction. The gas-liquid mixer is arranged on the basis of a original device to fully mix the paraffin oil and the chlorine outside the kettle and increase the contact area, so the reaction speed is accelerated, the reaction time is shortened, the reaction temperature is lowered, the productivity is increased, and the chlorine utilization rate is improved.

Description

technical field [0001] The invention relates to the technical field of chlorinated paraffin preparation, in particular to a high-efficiency production device and production method of chlorinated paraffin. Background technique [0002] Chlorinated paraffin is a chlorinated derivative of paraffin. It has the advantages of low volatility, flame retardancy, good electrical insulation, and low price. It can be used as a flame retardant and an auxiliary plasticizer for polyvinyl chloride. Due to the rapid development of the plastics processing industry, the excellent properties of chlorinated paraffins are gradually recognized by people. At present, in my country's plasticizer series, chlorinated paraffin is second only to DOP, and the output of DBP occupies the third place. [0003] At present, the industrial production methods of chlorinated paraffin include thermal chlorination, catalytic chlorination and photochlorination. No matter which method is used for production, high ...

Claims

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Application Information

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IPC IPC(8): C10G73/38
CPCC10G73/38
Inventor 李云政陈太林江立新
Owner 安徽绿色谷创客空间股份有限公司
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