Gum rosin processing unit adopting vacuum filtration method

Abstract

The invention discloses a gum rosin processing unit adopting a vacuum filtration method, and the gum rosin processing unit comprises a dissolving device, a clarification plant and a distilling device, wherein the dissolving device comprises a dissolving kettle, a hopper and a grease feed tank; the dissolving kettle is connected with a direct water vapor source; the clarification plant comprises a vacuum filtering device and a negative pressure device matched with the vacuum filtering device; the negative pressure device comprises a vacuum cylinder and a low-position water-jet vacuum unit; the distilling device comprises a distilling kettle and a fraction purifying device; a grease liquid outlet of the dissolving kettle is technically connected with an inlet of the vacuum filtering device; a pure grease liquid outlet of the vacuum filtering device is technically connected with the inlet of the distilling kettle; and a distillation outlet of the distilling kettle is technically connected with the fraction purifying device. By replacing the traditional natural sedimentation clarification method by a vacuum filtration method, the gum rosin processing unit disclosed by the invention increases the clarification speed, reduces the time of the grease liquid in a high-temperature environment, increases good quality rate, reduces the amount of intermediate-layer grease liquid, and increases the yield of the product. The method mentioned in the invention is suitable for production of gum rosin adopting an intermittent or continuous vapor method.

Description

technical field [0001] The invention belongs to the technical field of rosin production, and in particular relates to a processing device for gum rosin by a vacuum filtration method with high clarification speed and high production efficiency of dissolving fat liquid. Background technique [0002] With the development of industrial technology and electronic technology and the accumulation of production experience, my country's rosin production and reprocessing technology has made great progress, and product quality and grade rate have also been significantly improved. Especially in recent years, my country's rosin production is at the forefront of the world. Rosin is an important industrial raw material, including gum rosin, wood rosin, tall oil rosin. Gum rosin is also known as relaxing incense, light in color, large acid value, and high softening point; wood rosin is also called leaching rosin, its quality is not as good as gum rosin, its color is dark, its acid value is ...

AI Technical Summary

Problems solved by technology

The commonly used preparation method of gum rosin is the steam method, whether it is intermittent steam method or continuous steam method, what removes impurities in the dissolved fat liquid is the natural clarification process, that is, the method of natural sedimentation by gravity, which has great disadvantages Disadvantages: multiple clarification tanks are required to cooperate with the operation (usually 3 or 4), and the natural flow method leads to a very long clarification process, at least 18-24 hours from dissolution to clarification, which not only takes up a lot of production time , and during the clarification period, a large amount of coal, water, electricity, steam and other energy sources are required, resulting in serious production waste; in addition, the natural sedimentation method has low clarification efficiency, and will produce a large amount of middle layer fat liquid containing impurities, which needs to be extracted again Recycling not only increases the pressure of the auxiliary process, but also causes further waste because it cannot be completely recycled; moreover, the dissolved fat liquid is stored in a high-temperature environment for too long and is easy to oxidize, which increases the color number of the fat liquid and reduces the High quality rate

Excessive clarification time also increases carbon dioxide emissions, and multiple clarifiers increase the floor area and equipment investment, which will increase the investment of the enterprise

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