Degassing equipment

An equipment and air channel technology, applied in the field of degassing equipment, can solve the problems of poor degassing effect and poor stirring effect of degassing equipment, and achieve the effects of improving stirring effect, preventing excessive pressure and improving degassing effect.

Inactive Publication Date: 2016-04-20
ZHEJIANG TIANCHEN PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention lies in the poor stirring effect and poor degassing effect of the degassing equipment in the prior art, thereby providing a degassing equipment with good stirring effect and good degassing effect

Method used

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  • Degassing equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a degassing device, such as figure 1 shown, including,

[0036] The kettle body 1 has an accommodation space, a feed port, an air extraction hole 14 at the top of the kettle and a discharge port 13 at the bottom;

[0037] Stirring device, including a rotating shaft 3 arranged vertically at the center of the kettle body 1 and driven by a power device to rotate, and several paddles 4 arranged on the rotating shaft 3;

[0038] The power device 2 is arranged outside the kettle body 1, and is connected to the rotating shaft 3 in transmission, and is used to drive the rotating shaft 3 to rotate;

[0039] A vacuum device communicated with the air extraction hole 14 for extracting the gas in the kettle body 1;

[0040] The rotating shaft 21 is hollow to form an air passage 31, and the paddle 4 is formed with a number of air jets communicating with the air passage 31;

[0041] One end of the air passage 31 communicates with the steam supply pipe, so t...

Embodiment 2

[0061] The present embodiment provides a kind of degassing method of carboxylated styrene-butadiene latex, using the degassing equipment of embodiment 1, the temperature of the described steam that is passed into air channel 31 is 150 ℃, and the steam addition is 20kg / h (by kettle per ton of carboxylated styrene-butadiene latex emulsion in the body 1), the rotational speed of the rotating shaft 21 is 8 revolutions per minute, and the pressure of -0.09MPa is kept in the kettle body 1 by a vacuum device, and the temperature is kept at 60 ℃, the steam feeding time is 1.5h, after which the steam feeding is stopped, and 2Nm 3 The nitrogen of / h (calculated with every ton of carboxylated styrene-butadiene latex emulsion in the kettle body 1) passes into the time for half an hour, and when the temperature in the kettle body 1 is lower than 50° C., the carboxylated styrene-butadiene latex is discharged.

Embodiment 3

[0063] The present embodiment provides a kind of degassing method of carboxylated styrene-butadiene latex, using the degassing equipment of embodiment 1, the temperature of the described steam that is passed into airway 31 is 160 ℃, and the steam addition is 22kg / h (by kettle per ton of carboxylated styrene-butadiene latex emulsion in the body 1), the rotational speed of the rotating shaft 21 is 11 revolutions per minute, and the pressure of -0.09MPa is kept in the kettle body 1 by a vacuum device, and the temperature is kept at 65 ℃, the steam feeding time is 1.8h, after which the steam feeding is stopped, and 3Nm 3 The nitrogen of / h (calculated with every ton of carboxylated styrene-butadiene latex emulsion in the still body 1), feed time 50 minutes, and when the temperature in the still body 1 was lower than 50 ℃, carboxylated styrene-butadiene latex was discharged.

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Abstract

The invention relates to degassing equipment. A stirring device and a steam inletting mechanism are integrated; a high-temperature steam circulation channel is formed in a revolving shaft and blades of the stirring device; high-temperature steam is sprayed from air nozzles in the blades; as the blades and the air nozzles are respectively located in a kettle body, therefore an effect of dispersing the steam be exerted; moreover, the blades and the air nozzles can also rotate along with the revolving shaft, so that the steam can reaches all positions in the kettle body more evenly, and a stirring effect of the high-temperature steam on a liquid mixture in the kettle body is increased; during an inletting and stirring process of the high-temperature steam, gases in the liquid mixture are separated out and pumped away by a vacuum plant, therefore a degassing device is increased.

Description

technical field [0001] The invention relates to a degassing device, which belongs to the technical field of chemical equipment. Background technique [0002] The polymer polymerization reaction is to add various reactants into the reaction vessel, and control the reaction conditions to polymerize the reaction monomers to form a polymer. In order to make the reaction proceed uniformly, it is necessary to stir the reactants in the reaction vessel. At present, mechanical stirring is often used to stir the reactants. [0003] Chinese patent document CN104231173A discloses a degassing kettle, which includes a kettle body and a stirring device, and the kettle body is provided with a material inlet, a material outlet, a steam inlet, and a gas extraction port. In specific use, high-pressure steam enters the interior of the kettle body through the steam inlet at the bottom of the kettle body to stir the liquid mixture in the kettle body. Then pump air through the suction port to r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/00
CPCB01D19/0052
Inventor 张弘强吉耀军史华芳张宏伟
Owner ZHEJIANG TIANCHEN PLASTIC IND
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