Duplex centrifugal-film evaporator for preparing basic cupric carbonate

Abstract

The invention relates to a duplex centrifugal-film evaporator for preparing basic cupric carbonate, which includes a drive system, a vapor treatment chamber, an evaporation chamber and a tapered discharging chamber, wherein a gas-liquid filter and a gas-liquid separator are arranged inside the vapor treatment chamber; the outer wall of the vapor treatment chamber is provided with a tail gas collecting opening and a secondary vapor recovering opening; a distributing device is arranged at the top end of the vapor treatment chamber; a material inlet is formed in the outer wall of the distributing device; the secondary vapor recovering opening is communicated with the material inlet sequentially through a condenser and a feeding pump; a jacket is arranged inside the evaporation chamber; the outer wall of the jacket is provided with a vapor outlet and a condensate water outlet; the vapor outlet and the condensate water outlet are communicated with each other, and are communicated with the material inlet sequentially through a vacuum pump, the condenser and the feeding pump; one side of a discharge valve of the tapered discharging chamber is connected with a sample collector; the other side of the discharge valve is connected with a screw rod feeder; and the screw rod feeder is communicated with the material inlet sequentially through the condenser and the feeding pump. The duplex centrifugal-film evaporator realizes on-line production detection and treatment as well as on-line recovery and utilization of gas, liquid and residues, thereby improving the product quality and yield.

Description

Technical field [0001] The invention relates to a thin film evaporator, in particular to a compound centrifugal thin film evaporator for preparing high-purity basic copper carbonate. Background technique [0002] The traditional production of basic copper carbonate generally uses a coil evaporator. Because the coil is easy to scale and difficult to clean, the resulting product has high impurity content and low yield, and its application is greatly restricted. Since copper is an important non-ferrous resource in the country, the price is relatively expensive, and the yield and quality directly affect the production cost. Centrifugal thin-film evaporator is a new type of evaporator widely used in chemical, light industry, food, pharmaceutical and environmental protection industries recently. In recent years, people have done a lot on the product quality, production energy consumption, and service life of evaporators. Improvements, such as the patent number 201020165218.X "A Rotary...

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Problems solved by technology

However, the evaporators involved in the above-mentioned published patents generally have low yields of processed products, insufficient utilization of vapor, liquid and residues generated by evaporation, large energy consumption, and high costs. Therefore, it is necessary to develop a method that can produce high-purity ash Type copper carbonate, and can fully recycle vapor, liquid and residue at the same time, a new type of thin film evaporator with high yield

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