Our factory's idle second-hand forced circulation evaporator

Our factory's idle second-hand forced circulation evaporator

Regarding the company:

Heze Development Zone DeDe Chemical Equipment Sales Center supplies: second-hand drying equipment, second-hand domestically imported disc separators, second-hand heat-conducting oil furnaces, second-hand horizontal spiral centrifuges, second-hand plate and frame filter presses, second-hand horizontal scraper centrifuges, and second-hand horizontal two-stage piston pushing centrifuges Used tube bundle dryer, used flash dryer, used enamel reaction kettle, used stainless steel reaction kettle, used stainless steel tube condenser, etc., used stainless steel cold and hot cylinders, used high-pressure homogenizer, used dairy equipment, used beverage equipment, edible oil processing plant, feed processing plant precision factory, dairy factory, food protein factory, beverage factory complete set of production equipment.

Regarding images:

Attention to issues:

The circulation flow rate of liquid in the heating tube is usually within the range of 1.2-3.0 meters per second (when there are many grains in the suspension, the hardness of the pipe used is low, and the viscosity of the liquid is high, a low value is selected). The heating tube can be vertical one-way, vertical two-way, horizontal one-way, or horizontal two-way, with the latter two having a smaller overall height but the tube is not easy to clean and the tube wall is prone to wear.

The head of the circulating pump should match the resistance of the circulating system, usually with a high flow rate. Due to the temperature of the solution approaching the boiling point, attention should be paid to the issue of cavitation when selecting pumps.

Introduction:

The forced circulation evaporator is used to prevent scaling or crystallization of products boiling on the heating surface. Therefore, the flow velocity in the tube must be high. When the circulating liquid flows through the heat exchanger, it is heated and then partially evaporated when the pressure in the separator decreases, thereby cooling the liquid to its boiling point temperature at the corresponding pressure. Due to the circulation pump, the operation of the evaporator is largely independent of temperature differences. The recycling speed of materials can be precisely adjusted. The evaporation rate is set within a certain range. In crystallization applications, crystals can be separated from circulating crystal slurry by adjusting the circulation flow rate and using special separator designs. The equipment adopts pump forced circulation, with high evaporation rate and significant concentration ratio, especially suitable for the evaporation of materials with high concentration or viscosity;

Working Principle:

A type of evaporation equipment. The circulation of solution inside the equipment mainly relies on the forced flow generated by external power. The cycle speed can generally reach 1.5-3.5 meters per second. High heat transfer efficiency and production capacity. The raw material liquid is pumped from bottom to top by a circulation pump and flows upward along the inner tube of the heating chamber. The mixture of steam and liquid foam enters the evaporation chamber and separates. The steam is discharged from the upper part, and the fluid is blocked and falls down. It is sucked in by the circulation pump through the conical bottom and then enters the heating tube to continue the circulation.

Features:

Advantages: high heat transfer coefficient, resistance to salt precipitation, anti scaling, strong adaptability, easy to clean.

Disadvantages: High consumption of kinetic energy and long residence time of the solution; The cost and maintenance expenses are slightly higher.

Scope of application:

Forced circulation evaporator is suitable for evaporation and concentration in industries such as chemical, food, pharmaceutical, environmental engineering, waste liquid evaporation and recovery, which have scaling, crystallinity, heat sensitivity (low temperature), high concentration, high viscosity, and contain insoluble solids.

Our factory's idle second-hand forced circulation evaporator