Scope of application: climbing film evaporator

Climbing film evaporator is suitable for processing capacity is bigger, heat-sensitive, solution viscosity small and easy to bubble, but there is not suitable for high viscosity, crystal precipitation and scale of the solution. For large quantities of dilute solution. If the solution concentration increased dramatically with the evaporation process. It is recommended to use falling film evaporator.

Climbing film evaporator working principle:

The structure of the climbing film evaporator liquid into the heating tube heating, according to the principle of siphon pump into the separator liquid and steam after separation, through the circular pipe flow back to the evaporator, form a closed cycle, as a result, this kind of evaporator is also called external loop evaporator.

Heating tube is made up of heat exchange tube, raw material liquid after preheating reached boiling point or near the boiling point, introduced by the bottom of the heating chamber, secondary steam drive for high speed rise, along the wall flow and evaporation heat exchange tube, on top of the heating chamber, can achieve the required concentration at the bottom of the completion fluid by the separation chamber, secondary steam produced by the group is located in the upper plate separation to remove bubbles, drops, sundry become after the effect of the heat source. Climbing film evaporator is suitable for processing capacity is bigger, heat-sensitive, solution viscosity small and easy to bubble, but there is not suitable for high viscosity, crystal precipitation and scale of the solution.

Climbing film evaporator's brief introduction:

Brand/model: progress Chen industrial co., LTD

Operating pressure: the atmospheric pressure

Film evaporator litres film evaporator is also called climbing film evaporator, it based on siphon principle of pump operation, according to the lift force of the steam produced in the process of boiling bubbles, liquid and steam flow and flow, at the same time, the steam increase, thus, produce liquid film on the wall, the liquid up "climb". And flow to the campaign with the rib to produce highly turbulent in the liquid.

The characteristics of the evaporator is has long heating tube (about 5 ~ 7 m), but the heating chamber and the difference in temperature between boiling room must also big, otherwise, the steam flow of energy shortage in conveying liquid membrane and climb.

The characteristics of climbing film evaporator:

Normal operation is the key to make climbing film evaporator liquid materials in the continuous liquid film is formed on the wall. Climbing film evaporator structure is actually a single tube side upright installation fixed tube sheet heat exchanger. Climbing film evaporator in the heating chamber is composed of one or several long vertical tube, climbing film evaporator  flash evaporator) is a kind of high efficiency evaporation equipment  it can made by evaporating liquid in the evaporator liquid film shaped through the heated surface  quickly make light phase evaporation  thus shortening the residence time of heating  to strengthen the effect of evaporation.

A: the material import

B: condensed water outlet

C: steam inlet

D: concentrate exports

E: secondary steam outlet