The latex from the polymerization process is polymerized and discharged into the discharge tank, and the latex is stirred by a mixer in the discharge tank to produce a large amount of foam, and the foam floats up into the defoaming machine. After defoaming,VC gas entrained a small amount of foam into the defoaming tower, and then defoaming again in the defoaming tower. The gas phase monomer is recycled into the gas cabinet by the vacuum pump, the emulsion flows into the bottom of the tower, and enters the discharge tank by the defoaming tower outlet pump. After the defoamer is completed, the latex enters the drying process through the bottom of the discharge tank. Defoaming process flow. After the polymerization reaction is over, the discharge recovery system is started and the PVC slurry is automatically discharged into the discharge tank. The top of the discharge tank is installed with a mechanical defoaming machine. The defoaming machine uses the powerful centrifugal force generated by the high-speed rotating rotor to accelerate the settling speed of the particles in the liquid and sink the materials differently. The drop coefficient and buoyancy density of the material are separated.

When the material is rotating at high speed in the machine, it is affected by centrifugal force, and the gravity separation motion generated along the vector direction and the upward pushing effect generated by the material's own weight separate the bubbles. It is used to eliminate the foam in the discharge tank, after the gas-liquid separation, the recovery of VC and the recovery of VC - in the polymerization system, and enter the defoamator. The internal of the defoamator tower is the spina structure tray, and the foam ensnare material in the gas phase is cut by the spina on the tray when passing through the tray, the gas phase continues to rise, and the solid and liquid phase sink by their own gravity to achieve the purpose of eliminating the recovery of the ensnare material in the gas phase. Defoamer collection of unreacted. Of vinyl chloride, into the recovery gas tank. The PVC slurry latex pump collected at the bottom of the tower is pumped back into the discharge tank.

The main equipment of the defoaming process includes discharge tank stirring device, defoaming machine, defoaming tower, vacuum pump, defoaming tower pump, etc. The defoaming tower has been independently developed by the company, and the defoaming tower has certain use value in the production of PVC paste resin.

The foam defroster is a closed round tower body, the bottom of the tower body is provided with a discharge port, the tower body is provided with a multi-layer tray, the lowest tray and the discharge port between the feed port, the recovered VC gas is fed; The top of the tower body is provided with an air outlet, and the removed VC gas is returned by a vacuum pump. Air collecting cabinet; The middle part of the tower body and the upper part of the top tray are provided with a water inlet for washing the tray. In paste resin production, the main component of removing VC gas in the foam is the tray, the upper part of the defoaming tray is provided with a buffer cover, the buffer cover is hemispherical, the lower part of the buffer cover is provided with legs, the lower part of the leg is provided with barbed wire, the barbed wire is conical downward, and the lower part of the barbed wire is provided with spikes, which cause damage to the foam, and the conical barbed wire increases the defoamination area of each layer of the tray. The defoaming efficiency is improved, and the buffer cover and support leg can buffer and drain the emulsion generated after defoaming, which is conducive to the emulsion entering the bottom of the tower. The deoaming tower has simple and practical structure and good defoaming performance.

Shenzhen QDI Technology Co., Ltd. was established in 2019, is a collection of production, sales, research and development as one of the technology company; The main products are planetary centrifugal vacuum stirring defoaming machine, magnetic material swing machine, scraping grinding machine, automatic screen plate micro testing light table, screen plate oven, anti-precipitation rolling machine, non-standard hardware products and non-standard machine equipment R & D and production, film storage equipment and accessories, etc. The company's products are widely used in the material industry, circuit board action, printing industry, photoelectric industry. LCD industry and so on.

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