Wuxi Guanya Refrigeration Technology co., ltd

Measures for stable operation of short-range molecular distiller

If the short-range molecular distiller is inefficient during operation, it will affect the use of the associated refrigeration heating temperature control system. How does the short-range molecular distiller maintain stable operation?

If the steam pressure entering the first effect film evaporator is too low, the preheating section of the liquid entering the tube will increase, which correspondingly shortens the film evaporation distance of the annular flow section, which will result in insufficient heat transfer and decrease in productivity. Or the discharge concentration does not meet the requirements. Therefore, within a certain range, appropriately increasing the pressure of the heating steam increases the temperature difference between the steam and the material, that is, the amount of heat transfer increases, and increases the evaporation rate. However, the vapor pressure should not be too high, otherwise the "dry wall area" of the heating pipe will reduce the heat transfer coefficient value, and the discharge concentration will be too high, which will easily cause the discharge pipe to clog and affect normal production.

The higher the vacuum of the short-range molecular distiller evaporating evaporator, the lower the boiling point of the liquid, and the higher the average temperature difference between the hot and cold fluids, the better the heat transfer effect. At the same time, under vacuum, the superheat temperature of the bubble generated at the lower inlet exceeds the temperature difference from the heat transfer in the film, so evaporation can be carried out completely on the surface of the film.

The short-flow molecular distiller is introduced into the rising film evaporator and the raw steam enters the first effect tube bundle and is discharged from the lower portion of the evaporator. In actual operation, the raw steam cannot be fully utilized, and a large amount of hot steam is discharged out of the evaporator together with the condensed water. The waste heat from the steam passing through the shell is used as a heat source, and a preheater is added before the feed liquid enters the effect-lift membrane evaporator to preheat the liquid to a higher temperature, so that not only the heat source can be fully utilized, but also waste is avoided. It can reduce the evaporator load and shorten the evaporation time, which is beneficial to the improvement of the evaporator production capacity.

The short-range molecular distiller should pay attention to maintaining its stable and efficient operation mode in actual operation, so that it is more stable and efficient in operation with the refrigeration heating temperature control system of LNEYA.

(This article is from the source network, if there is any infringement, please contact to delete.)
Related News
Related Products
  • SLJ -110℃~-150℃

    SLJ -110℃~-150℃

    January 11, 2018Temperature ranges from - 5 ~ - 150 ℃, can meet different temperature; Adopt environmental protection refrigerants; Famous brand semi-closed piston compressor, semi-closed bipolar piston compressor, semi-hermetic screw compressor, main brand are BOCK.view
  • Single Fluid Heat Transfer System SR

    Single Fluid Heat Transfer System SR

    April 10, 2018Working temperature range from -25℃to 200℃, other temperature range need to set to the widest temperature range(-50℃to 250℃) Centralized control of 2~20 reactors, each reactor's and jacket temperature can be set independently. One system control multipleview
  • Reactor Temperature System ZLF

    Reactor Temperature System ZLF

    April 10, 2018A set of cooling heat exchanger, heat exchanger, through proportional adjusting valve control cold heat into the heat exchanger, then through the uniform medium input to the reactor jacketed to do heat exchange and temp. Control, system has inside expansiview
  • LT -45℃~30℃

    LT -45℃~30℃

    April 10, 2018Low Temperature Cooling Chiller LT model: LT-5018N,LT-5040N,LT-5062N,LT-5090N,LT-50A1N,LT-50A2N; Medium Temperature Range: -45℃~30℃. ASET multifunctional controller, control outlet temperature of water tankview
  • TES -45℃~250℃

    TES -45℃~250℃

    February 28, 2019-45℃~+200℃ 2.5kW~25kW ±0.3℃view
  • TES -85℃~200℃

    TES -85℃~200℃

    February 28, 2019Temperature control range:-85 ° C ~ 200 ° CPower range:2.5kW~25kWTemperature control accuracy:±0.3°CModelTES-8525WTES-8555WTES-85A10WTES-85A15WTES-85A25WTemp. Range-85℃~200℃-85℃~200℃-85℃~200℃-85℃~200℃-85℃~200℃Heating P...view
products
Contact
Tel: + 86 18751546043
E-mail: sales@cnzlj.com
Add: No.203, Hongyun Road, Hongshan Street, Optoelectronics Park, Xinwu District, Wuxi City, Jiangsu Province, China
code chat