Polymerization kettle feeding device and using method thereof

A technology of a polymerization kettle and a feeding end is applied in the field of the feeding device of the polymerization kettle, which can solve the problems of low utilization rate of the polymerization kettle, poor stability of the polyvinyl chloride resin, long feeding time, etc., and avoid high polymerization degree of the polyvinyl chloride resin. , The effect of reducing the width of molecular weight distribution and saving feeding time

Active Publication Date: 2016-06-29
XINJIANG HUATAI HEAVY CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a polymerization tank feeding device and its use method, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of the existing production of polyvinyl chloride The 110m 3 polymerizer feeding process has the problems of long feeding time, low utilization rate of the polymerizer, and poor stability of the product PVC resin

Method used

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  • Polymerization kettle feeding device and using method thereof
  • Polymerization kettle feeding device and using method thereof

Examples

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Effect test

Embodiment 1

[0023] Embodiment 1, as attached figure 1 As shown, the feed device for the polymerization kettle includes a polymerization kettle 1 and a base 2; A monomer pipeline 3 is fixedly connected to a feed end, a terminator pipeline 4 is fixedly connected to a second feed end, a discharge end is provided at the bottom of the polymerization kettle 1, and a discharge end is fixedly connected to a discharge end. Pipeline 5, a first control valve 6 is fixedly installed on the discharge pipeline 5, a tee 7 is fixedly installed on the discharge pipeline 5 between the polymerization kettle 1 and the first control valve 6, and a tee 7 is fixedly connected to the tee 7 The hot ion-free water pipeline 8, the second control valve 9 is fixedly installed on the hot ion-free water pipeline 8, and the initiator is fixedly connected to the hot ion-free water pipeline 8 between the tee 7 and the second control valve 9 Pipeline 10 and cold deionized water pipeline 11, the third control valve 12 is...

Embodiment 2

[0029] Embodiment 2, as attached figure 1 As shown, the use method of the feed device of the polymerization kettle is carried out according to the following steps: the first step is to smear the anti-sticking agent on the inner wall of the polymerization kettle, and the pressure in the polymerization kettle is controlled to be -0.07MPa to -0.05MPa; the second Step, add 190 parts to 200 parts of cold deionized water by weight in the polymerization kettle through the cold deionized water pipeline, add 8.75 to 10.5 parts by weight in the polymerization kettle through the dispersant pipeline, and the concentration is 4 % aqueous solution of dispersant, add 1 part to 1.5 parts of aqueous buffer solution with a concentration of 10% by weight to the polymerization tank through the buffer pipeline, so that the cold deionized water enters with the aqueous solution of dispersant and the aqueous solution of buffer In the polymerization kettle, add 410 to 420 parts of vinyl chloride mo...

Embodiment 3

[0030] Embodiment 3, as attached figure 1 As shown, the use method of the polymerization kettle feeding device is carried out according to the following steps: the first step is to apply anti-sticking agent on the inner wall of the polymerization kettle, and the pressure in the polymerization kettle is controlled to be -0.07MPa or -0.05MPa; the second Step, add 190 parts or 200 parts of cold deionized water in the polymerization kettle by parts by weight through the cold deionized water pipeline, add 8.75 parts or 10.5 parts by weight in the polymerization kettle through the dispersant pipeline with a concentration of 4 % aqueous solution of dispersant, add 1 part or 1.5 parts of aqueous buffer solution with a concentration of 10% by weight to the polymerization tank through the buffer pipeline, so that the cold deionized water enters with the aqueous solution of dispersant and the aqueous solution of buffer In the polymerization kettle, add 410 parts or 420 parts of vinyl ...

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Abstract

The invention relates to the technical field of polyvinyl chloride polymerization kettles, and relates to a polymerization kettle feeding device and its use method; the polymerization kettle feeding device includes a polymerization kettle and a base; A first feed end and a second feed end are respectively provided, a monomer pipeline is fixedly connected to the first feed end, a terminator pipeline is fixedly connected to the second feed end, and a The discharge end is fixedly connected with a discharge pipeline. In the present invention, the vinyl chloride monomer, cold ion-free water, dispersant aqueous solution and buffer aqueous solution are added at the same time, which not only saves the feeding time, but also avoids the high degree of polymerization polymerization at a lower temperature during the feeding process of the polymerization kettle. The production of the vinyl chloride resin reduces the molecular weight distribution width of the polyvinyl chloride resin, makes the performance of the polyvinyl chloride resin obtained in the present invention more stable, saves costs and improves production efficiency.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride polymerization kettles, and relates to a polymerization kettle feeding device and a use method thereof. Background technique [0002] Currently producing 110m of PVC 3 The feeding process of the polymerization kettle adopts the cross-feeding method of cold ion-free water and hot ion-free water. After water passes through the mass flowmeter, it is added into the polymerization kettle from the bottom of the kettle, and the buffer feeding pump, dispersant feeding pump, and initiator feeding pump are started at the same time to add buffer, dispersant, and initiator to the cold ion-free water pipeline. The dispersant and initiator are brought into the polymerization kettle through cold deionized water. Buffer, dispersant, initiator and other additives are added before the cold deionized water, after the cold deionized water is added, start the monomer feeding pump to add recycled monome...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J4/02B01J19/18C08F114/06C08F2/01C08F2/20
Inventor 冯斌张睿郝江涛詹乃瑞陈凤盛国斌姜禹陈建平
Owner XINJIANG HUATAI HEAVY CHEM CO LTD
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