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Industrial Continuously Low Temperature Vacuum Belt Dryer

Belt Vacuum Dryer is a method of continuously distributing liquid raw materials on a conveyor belt under vacuum conditions. The materials are dried with the conveyor belt on the heating plate, and then cooled, embrittled and pulverized. A low temperature drying method. During the whole drying process, the extract is in a vacuum, closed environment, and the drying process is mild (operating temperature 30-135° C), which can maintain its physical properties to the maximum extent and obtain a high quality final product.
Since the material is gradually dried under a vacuum for a period of time, the particles obtained by drying have a certain degree of crystallization effect, and at the same time, there are micropores inside from the microscopic structure. After directly pulverizing to the required particle size, the flowability of the particles is very good, and it can be directly tableted or filled with mash, and the particles have good fast solubility.
In addition, a series of parameters can be adjusted online to meet the process requirements of different products, such as the belt speed of the vacuum (solid) belt drying track, the thickness of the layer, the drying temperature, the vacuum degree and etc. The dry product can retain its color, aroma and taste to the utmost extent, and obtain a high quality final product.
Vacuum belt drying technology has a wide range of applications and can be applied to most extracts and solid. Especially for materials with high viscosity, easy to build, thermoplastic and heat sensitive, vacuum belt drying can overcome the shortcomings of too dry and too dense spray drying powder. In addition, a series of parameters such as drying time of vacuum belt drying, feed rate, material thickness, drying temperature and environmental vacuum can be adjusted to suit the process requirements of different products, for heat sensitivity, high concentration, high sugar content, Materials such as high viscosity are also fully tested. At this point, belt vacuum dryers are far superior to spray dryers.
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Vacuum Belt Dryer

Continuous Vacuum Belt Dryer is used for gentle drying of pasty and liquid products like malt mixes, meat extracts, herbal extracts etc.

Vacuum Belt Dryer
for powder and particle

Belt Vacuum Dryer is a method of continuously distributing liquid raw materials on a conveyor belt under vacuum conditions. The materials are dried with the conveyor belt on the heating plate, and then cooled, embrittled and pulverized. A low temperature drying method. During the whole drying process, the extract is in a vacuum, closed environment, and the drying process is mild (operating temperature 30-135° C), which can maintain its physical properties to the maximum extent and obtain a high quality final product.
       
       Since the material is gradually dried under a vacuum for a period of time, the particles obtained by drying have a certain degree of crystallization effect, and at the same time, there are micropores inside from the microscopic structure. After directly pulverizing to the required particle size, the flowability of the particles is very good, and it can be directly tableted or filled with mash, and the particles have good fast solubility.
       
       In addition, a series of parameters can be adjusted online to meet the process requirements of different products, such as the belt speed of the vacuum (solid) belt drying track, the thickness of the layer, the drying temperature, the vacuum degree and etc. The dry product can retain its color, aroma and taste to the utmost extent, and obtain a high quality final product.

Advantages for the use of Vacuum Dryers

low product temperatures

minimal loss of flavors

very small product loss

no product oxidation

no mechanical stress to the product

controllable Maillard reaction

controllable solubility (instant characteristics) of the dried products

possibility to recover solvents

automatic cleaning

Equipment advantages

Continuous feeding and continuous discharging under vacuum condition.

Achieve drying, pulverizing and granulating processes under vacuum.

Process automation, continuous and pipeline in the drying process.

Organic solvents can be recycled, no emissions, no pollution.

System operating costs are 1/3 of vacuum oven and spray drying.

Shredded mesh 20-120 mesh
(adjustable).

According to the characteristics of the material, the corresponding equipment can be carried out online for the drying  process parameters.

Low temperature and fast drying process will greatly improve product quality.

Continuous discharge in 30-60 minutes, product recovery rate of more than 99%.

The material has excellent instant solubility after drying, which is unmatched by other
traditional drying.

Complete the granulation process under vacuum to avoid secondary moisture absorption, waste, and pollution.

It can solve the continuous drying of heat sensitive, high sugar and high viscosity materials.

The entire system and process meet
GMP requirements.

It will not pollute the environment due to dust and odor.

The entire system is automatically controlled by PLC.

Implement online CIP automatic cleaning.

Low labor costs, up to 2 operators.

Product parameters

Model Layer Evaporation area
Water evaporation kg/h Heating temperature range
°C
Vacuum range
pa
Diameter mm Length mm Height mm Feed moisture content
%
Dry powder moisture content
%
Number of discharges
BVD207 2 7 5.6-7.7 30-145 1000-5000 1200 7500 2000 20-80 0.5-5 20-120
BVD210 2 10 8-11 1200 9000 2000
BVD320 3 20 16-22 30-145 1000-5000 1600 9000 2500 20-80 0.5-5 20-120
BVD330 3 30 24-33 1600 12000 2500
BVD430 4 30 24-33 30-145 1000-5000 1900 9000 3400 20-80 0.5-5 20-120
BVD435 4 35 28-38 1900 10500 3400
BVD440 4 40 32-44 1900 12000 3400
BVD450 4 50 40-55 1900 13500 3400
BVD455 4 55 44-60 1900 15000 3400
BVD460 4 60 48-66 1900 16500 3400
BVD550 5 50 40-55 30-145 1000-5000 2200 10500 3700 20-80 0.5-5 20-120
BVD560 5 60 48-66 2200 12000 3700
BVD565 5 65 52-71 2200 13500 3700
BVD575 5 75 60-82 2200 15000 3700
BVD585 5 85 68-93 2200 16500 3700
BVD650 6 50 40-55 30-145 1000-5000 2200 9000 3700 20-80 0.5-5 20-120
BVD660 6 60 48-66 2200 10500 3700
BVD670 6 70 56-77 2200 12000 3700
BVD685 6 85 68-93 2200 13500 3700
BVD695 6 95 76-100 2200 15000 3700
BVD6105 6 105 84-115 2200 16500 3700
BVD6115 6 115 92-126 2200 18000 3700
BVD7110 7 110 88-121 30-145 1000-5000 2500 15000 4000 20-80 0.5-5 20-120
BVD7125 7 125 100-137 2500 16500 4000
BVD7140 7 140 112-154 2500 18000 4000
BVD8135 8 137 109-150 30-145 1000-5000 2800 15000 4500 20-80 0.5-5 20-120
BVD8150 8 153 122-168 2800 16500 4500
BVD8170 8 170 136-187 2800 18000 4500
BVD9170 9 172 137-190 30-145 1000-5000 3000 16500 4900 20-80 0.5-5 20-120
BVD9190 9 191 152-210 3000 18000 4900
BVD10190 10 191 152-210 30-145 1000-5000 3000 16500 4900 20-80 0.5-5 20-120
BVD10210 10 211 168-231 3000 18000 4900

Range of Application

Vacuum belt dryer finds its application in a wide range of industries – especially for products that are difficult to dry and process using the traditional dryer techniques. These include, but are not limited to: conventional and western pharmaceutical products, biological products, food, health foods, chemicals, and food additives, etc.



Food Products

Used to produce food products such as malt extract, tea powder, corn paste, instant beverage, and cocoa powder. The fineness of the powder and the granules’ size for food products such as coffee can be controlled using specific crusher equipment.            

Other food products include: Rice protein powder, hops extract, wheat essence, vegetable juice concentrate, meat extracts,chocolate products, instant soup, etc.



Pharmaceutical products

Pharma products such as Chinese medicine extracts, embryos, plant extracts, and PVPK products are primarily produced using Vacuum Belt Dryers. Other pharma products processed using VBDs are vitamins, fermentation broth, antibiotics, and active medicinal substances, etc.



Chemical products

VBDs are also used to produce chemical products such as the lithium battery used in a wide range of electric vehicles and emamectin benzoate (an insecticide used in pest control).


   

Range of Application

Feed System

Vacuuming System

Heating System

CIP Cleaning System

Control System

Control Cabinet




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