Hydrogenated petroleum resin granulator and granulation method thereof

Abstract

The invention relates to the field of petrochemical industry, in particular to a hydrogenated petroleum resin granulator and a granulation method thereof, comprising a distributor, a conveying device, a cooling device, and a discharge bin. The cooling device includes a water spray pipe, a water spray pipe There is a water spray port on the top, and the water spray pipe is arranged at the lower part of the conveying device. The water spray pipe includes a pre-cooling section and a graded cooling section arranged in sequence. The pre-cooling section is close to the feeding end of the conveying device. stage or multi-stage cooling sections, the cooling sections of the pre-cooling section and the graded cooling section are respectively connected to the water inlet pipes, and the water inlet pipes are connected to the cooling water, and the cooling water in the water inlet pipes of the cooling sections of the pre-cooling section and the graded cooling section The water temperature decreases successively. The invention keeps the temperature difference between the material and the cooling medium stable, and prevents the material from becoming brittle during rapid cooling and difficult to separate from the bonded steel belt.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a hydrogenated petroleum resin granulator. Background technique [0002] Hydrogenated petroleum resin has good viscosity, compatibility, thermal stability and light stability, and can improve the bonding performance of adhesives. It is an essential tackifying component of many adhesives. Widely used in hot melt, pressure sensitive adhesive, structure and decoration of construction industry, automobile assembly, tires, commodity packaging, book binding, sanitary products, shoemaking, hot-melt road marking paint, colored asphalt and other industries. [0003] Hydrogenated petroleum resin is a kind of petroleum resin with better performance after hydrogenation reaction of petroleum resin, which has stronger viscosity than ordinary petroleum resin. At present, the granulation of this product still chooses the rotary belt condensation method used by ordinary petroleum resin. Due...

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Problems solved by technology

[0003] Hydrogenated petroleum resin is a petroleum resin with better performance obtained after hydrogenation reaction of petroleum resin, which has stronger viscosity than ordinary petroleum resin. At present, the granulation of this product still chooses the rotary belt type condensation used by ordinary petroleum resin. Due to the high viscosity of the granulator, the hydrogenated petroleum resin is firmly adhered to the stainless steel belt at the end of the conventional rotary belt granulator in the molten state of 200 ° C. The resin on the steel belt, most of the granulated resin is broken, which greatly reduces the quality of the product

[0004] In addition, for the conventional rotary belt granulator, the cooling water is basically circulating water, regardless of high temperature, low temperature and other cooling areas, without considering the energy gradient distribution setting, the temperature difference in the high temperature section is large, the material is prone to rapid cooling and adhesion, and the circulating water load is large.

Especially in summer, the effect is poor

[0005] Since only one circulating water cooling method is used, in order to achieve the cooling effect, the rotary belt granulator often occupies too large an area, which is not conducive to intensive production

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