Vacuum dryer can be used to dry heat responsive hygroscopic and toxic supplies. If the supply for drying is a clarification, it can be dehydrated by means of vacuum tray dryer as the flush can be better by reduction. To progress superiority of commodities, such as for fruit conservation, hybrid drying combines osmotic dryness follow by heat pump ventilation and microwave-vacuum drying prove successful.
Vacuum Dryer has many advantages: low anxiety dehydrated oxygen satisfied is low, to avoid the oxidative worsening of the dry substance can be dehydrated and combustible and volatile hazardous supplies; so that the vaporization of damp in the substance at low temperature, simple to dehydrated heat responsive supplies; proficient of recuperating the expensive and valuable ingredient; be dehydrated supplies can put off the production of dry supplies, noxious and dangerous substance. Consequently, the more and more extensive submission of vacuum dryer.
The major problem of the vacuum dryer is require for a pumping steam vacuum arrangement, production the speculation in paraphernalia costs, high functioning costs; low competence of paraphernalia, construction of miniature. Also, since the vacuum drying has much compensation, a number of merchandise had to use a vacuum dryer. On the other hand, the technological level and consciousness of the idea of the boundaries, the expansion is comparatively measured.
A quantity of views of the progress of vacuum dryer
1) Novelty is the primary way of expansion Vacuum Dryer
Vacuum Tray Dryer progress is sluggish, there is one significant motive is that each other simulation, suspended in the similar mechanical level, the lack of novelty simulation capability, haste, and pioneering ideas, and a diminutive speculation the enhanced practice in provisions of superiority and following service, and a number of effort. None of these is the enlargement of the vacuum dryer a good quality way to be dedicated to the individual, substance and economic possessions to be pioneering.
2) Energy preservation is the key to the progress of vacuum dryer:-
The power deficiency has external universal attention, the conventional impression that the vacuum dryer power expenditure, for the reason that it needs to enlarge the vacuum pump but did not see the identical kind of substance, dehydrated to the similar dampness satisfied, the real energy expenditure assessment. In fact, vacuum drying, ventilation at low down temperature in a congested space, power waste is comparatively minute. On the other hand, the vacuum dryer power saving is immobile the key to expansion. Compare with other types of dryers, vacuum dryer of vigour have to focus on the on the based on reason intend, assortment and use of the vacuum system.
Pumping the vacuum arrangement of steam, not many, there are two main module, one is in a straight line pumping vapour pump, irrigate inoculation pump, vapour jet pumps, irrigate loop pumps and damp Roots pump; previous The way to grasp irrigate concentration. Are two conducts to superior power expenditure than the preceding type of control saving way have to be to augment the pumping efficiency of the pump; the direction of the latter type of energy efficient intend, such as gas-solid phase modify heat arrangement and thermal competence.
3) Incessant Vacuum Dryer is a significant technique to progress produce acquiesce, energy preservation:-
Permanent vacuum dryer is sequence of vacuum dryer, the supplementary less time to saving the increase production. It does not have to similar to cycle-type vacuum dryer to manufacture a cycle, paraphernalia and low temperature change in time, resultant in fraction of the vigour exhausted on frequent heating of the machine mechanism.
4) Vacuum dryer, and other ventilation process amalgamation is the method of manufacture should be promote:-
Vacuum dryer is combining with other drying method to get better manufacture competence, diminish manufactured goods cost. vacuum drying can make sure product superiority, before vacuum drying, maintenance after blanch, dewatering by centrifuge, and then the arctic air ventilation to get rid of surface irrigate, and then into the vacuum dryer, it is can realize important look up the construction competence, while plummeting construction costs. Amalgamation of drench and freeze-drying is also an amalgamation of one of the conduct. This is comparable to combinations of experimentation to find a variety of expend.