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A method for producing chlorinated paraffin-52 by combining thermal chlorination and photocatalysis

A chlorinated paraffin and photocatalysis technology, applied in petrochemical modification and other directions, can solve the problems of uneven distribution of chlorine gas, low chlorine gas conversion rate, uneven ultraviolet light irradiation, etc., to shorten the reaction time, save energy costs, Even heating effect

Active Publication Date: 2019-03-12
广西盛亚科技集团股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN02148592.5 discloses a production method for continuous chlorinated paraffin, adopts multiple reactors connected in series, and feeds chlorine gas from the top, so the distribution of the forced chlorine gas is uneven, the conversion rate of chlorine gas is not high, and the hydrogen chloride produced by the reaction at the same time The chlorine content in the tail gas is also high
CN 100371425C introduces chlorine gas from the bottom of the reactor, and ultraviolet light catalyzes chlorination reaction, but the irradiation of ultraviolet light is uneven, resulting in excessive local exothermic burning

Method used

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  • A method for producing chlorinated paraffin-52 by combining thermal chlorination and photocatalysis

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Effect test

Embodiment 1

[0029] A method for producing chlorinated paraffin-52 in combination with thermal chlorination and photocatalysis, comprising the following steps:

[0030] 1) Prepare a filter screen 2, the filter screen 2 is composed of the following materials in parts by weight: 10 parts of carbon fiber, 20 parts of silica gel, 5 parts of polyurethane resin, and 1 part of seaweed particles;

[0031] 2) Melt the solid paraffin and flow through the filter screen 2 to obtain refined liquid paraffin;

[0032] 3) described refining liquid paraffin is passed into reactor 5 that is added with catalyzer; Described catalyzer is 0.1% of solid paraffin weight;

[0033] 4) The reactor 5 is rotated along the horizontal axis, and the refined liquid paraffin and the catalyst are mixed for 10 min at a temperature of 80° C.;

[0034] 5) Feed chlorine gas into the position of the horizontal axis where the reactor 5 rotates, keep the reactor rotating along the horizontal axis, use a black light lamp 6 to irra...

Embodiment 2

[0042] A method for producing chlorinated paraffin-52 in combination with thermal chlorination and photocatalysis, comprising the following steps:

[0043] 1) Prepare a filter screen 2, the filter screen 2 is composed of the following materials in parts by weight: 15 parts of carbon fiber, 40 parts of silica gel, 10 parts of polyurethane resin, and 5 parts of seaweed particles;

[0044] 2) Melting the solid paraffin and flowing through the filter screen 2 to obtain refined liquid paraffin;

[0045] 3) said refined liquid paraffin is passed into the reactor 5 that is added with catalyzer; Said catalyzer is 0.2% of solid paraffin weight;

[0046] 4) Rotating the reactor 5 along the horizontal axis, mixing the refined liquid paraffin and the catalyst at a temperature of 100° C. for 10 minutes;

[0047] 5) Feed chlorine gas into the position of the horizontal axis where the reactor 5 rotates, keep the reactor rotating along the horizontal axis, use a black light lamp 6 to irradia...

Embodiment 3

[0055] A method for producing chlorinated paraffin-52 in combination with thermal chlorination and photocatalysis, comprising the following steps:

[0056] 1) Prepare a filter screen 2, the filter screen 2 is composed of the following materials in parts by weight: 12 parts of carbon fiber, 30 parts of silica gel, 8 parts of polyurethane resin, and 3 parts of seaweed particles;

[0057] 2) Melting the solid paraffin and flowing through the filter screen 2 to obtain refined liquid paraffin;

[0058] 3) said refined liquid paraffin is passed into the reactor 5 that is added with catalyzer; Said catalyzer is 0.2% of solid paraffin weight;

[0059] 4) The reactor 5 is rotated along the horizontal axis, and the refined liquid paraffin and the catalyst are mixed for 8 minutes at a temperature of 90° C.;

[0060] 5) Feed chlorine gas into the position of the horizontal axis where the reactor 5 rotates, keep the reactor rotating along the horizontal axis, irradiate the reactor with a ...

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Abstract

The invention discloses a method for producing chlorinated paraffin-52 by combining a thermal chlorination process and a photocatalysis process. The method comprises the following steps: 1) preparing a filter screen; 2) melting solid paraffin, and enabling the molten paraffin to flow through the filter screen to obtain refined liquid paraffin; 3) feeding the refined liquid paraffin into a reactor with a catalyst; 4) rotating the reactor along a transverse axis, and mixing for 5-10min at a temperature of 80-100 DEG C; 5) introducing chlorine to the position of the transverse axis where the reactor rotates; keeping the reactor rotating along the transverse axis; irradiating the reactor with a black light lamp; performing photo-initiation for 40-60min at 70-75 DEG C; performing a chlorination reaction for 2-3h at 50-70 DEG C; 6) stopping the chlorination reaction; collecting the product of the chlorination reaction; adding a stabilizer and a modifier; stirring uniformly; cooling to obtain chlorinated paraffin-52. By adopting the transversely rotating reactor, the ultraviolet irradiation is uniform, the heating is uniform, and a uniform reaction is realized.

Description

technical field [0001] The invention relates to the field of chlorinated paraffin, in particular to a method for producing chlorinated paraffin-52 by combining a thermal chlorination method and a photocatalytic method. Background technique [0002] Chlorinated paraffins, also known as chlorocarbons, are chlorinated derivatives of paraffins. They have the advantages of low volatility, flame retardancy, good electrical insulation, and low price. They can be used as flame retardants and PVC co-plasticizers. Widely used in plastics, rubber and other products, and also as additives in coatings and lubricating oils. At present, the industrial production methods of chlorinated paraffin include thermal chlorination method, catalytic chlorination method and photochlorination method. The thermal chlorination method uses thermal energy to obtain chlorine free radicals. It operates smoothly and is widely used in industry, but the color of the product cannot be well guaranteed. The pho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G73/38
CPCC10G73/38
Inventor 程昊黄文艺李彦青李利军覃长昌刘文真莫向勇
Owner 广西盛亚科技集团股份有限公司
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