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Continuous production method of chlorinated paraffin

A technology for chlorinated paraffin and paraffin oil, applied in the direction of petrochemical modification, etc., can solve the problems of uneven distribution of chlorine gas, low chlorine gas conversion rate, affecting the quality of by-produced hydrochloric acid products, etc. The effect of production accidents

Inactive Publication Date: 2008-02-27
SHANGHAI CHLOR ALKALI CHEM
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Problems solved by technology

[0004] Chinese patent CN02148592.5 discloses a continuous production method of chlorinated paraffins. The method adopts multiple reactors connected in series for continuous production of chlorinated paraffins. However, the defects of this method are very significant. The inlet of the raw material chlorine of this method is arranged on the top of each reactor, therefore, the distribution of the chlorine gas introduced is not uniform, the conversion rate of chlorine gas is not high, and the content of chlorine gas entrained in the hydrogen chloride tail gas produced by the reaction is also relatively high, thus affecting the Product quality of hydrochloric acid

Method used

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Embodiment 1

[0025] Using the flow process of Figure 1, the circulating material and chlorine gas in Figure 2 enter the device 103, and there are 5 reactors to prepare chlorinated paraffin.

[0026] The paraffin oil enters the reactor 1 continuously through the paraffin oil inlet 104, and the chlorine gas enters the reactor from the bottom of the reactor 1 through the circulating material and the chlorine gas entering device 103, and chlorination reaction is carried out under the catalysis of the ultraviolet light emitted by the ultraviolet lamp. The reaction product of the first stage enters the reactor of the next stage to continue the reaction, and the reaction product of the last reactor enters the follow-up section for refining, and the hydrogen chloride produced by the reaction enters the tail gas treatment system from the tail gas outlet 106 at the top of the reactor;

[0027] The reaction product overflowing from the upper part of the reactor 1 enters the inlet of the external coole...

Embodiment 2

[0036] Adopt the device identical with embodiment 1, prepare chlorinated paraffin, select 3 reactors for use.

[0037] The technological conditions of the reaction are as follows: the reaction temperature is 105°C, the reaction pressure is 0.04Mpa, and the flow rate of paraffin oil is 1.875m 3 / h, the flow rate of chlorine gas is 800m 3 / h, the volume ratio of circulating material to chlorine gas is:

[0038] Circulating material: chlorine = 1:20;

[0039] The residence time of the material in the reactor is 25 hours,

[0040] The power of the ultraviolet lamp is 5 kW;

[0041] The average chlorine content gradient of the materials between each reactor is 20%, so as to ensure that the discharge of the last reactor reaches the specified index. The specific gravity of the materials in each reactor is as follows:

[0042] The second reactor: 18 (70°C Bomido), the third reactor: 27 (70°C Bomido); the molecular weight of paraffin oil is 200. The conversion rate was 99%.

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Abstract

The present invention discloses a method for continuously producing chloroparaffine. Said method includes the following steps: making paraffin oil be passed through paraffin oil inlet and continuously fed into reactor; making chlorine gas be passed through circulation material and chlorine gas feeding device and fed into reactor from bottom portion of said reactor; under the catalysis of UV light making them implement chlorination reaction; making reaction product of the prior-stage be fed into reactor of next-stage to make continuous reaction, making the reaction product of the last reactor be fed into subsequent work-shop section to make refinement; making the reaction product overflowed from upper portion of reactor be fed into inlet of external cooling device, cooled, then passed through circulating pump, conveyed and premixed with chlorine gas, then fed into reactor.

Description

technical field [0001] The invention relates to a production method of chlorinated paraffin, in particular to a method for continuous production of chlorinated paraffin. Background technique [0002] Chlorinated paraffin is an important industrial raw material, such as an auxiliary plasticizer for polyvinyl chloride, and can also be used as an anticoagulant, tackifier, paint stabilizer, etc. [0003] Due to the importance of chlorinated paraffins in industrial applications, the optimization of their production methods has attracted widespread attention. [0004] Chinese patent CN02148592.5 discloses a continuous production method of chlorinated paraffins. The method adopts multiple reactors connected in series for continuous production of chlorinated paraffins. However, the defects of this method are very significant. The inlet of the raw material chlorine of this method is arranged on the top of each reactor, therefore, the distribution of the chlorine gas introduced is no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G73/38
Inventor 孙国连江雄旺孙建平唐征生孙良进
Owner SHANGHAI CHLOR ALKALI CHEM
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