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Flash dryer
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Product Description
Filter cake paste material drying equipment is only one: China national new products and national torch plan project
A, the performance and characteristics of flash drying
Instant drying, the drying time 1-5 seconds, the product does not overheat, uniform quality, liquidity is good;
System is closed without cross contamination, yield > 99% above;
Heat source USES the hot blast stove, steam, electricity, flue gas, coal, gas and liquid as fuel, combustion mode for direct or indirect, hot blast temperature 90-600 ℃;
High thermal efficiency, strong evaporation capacity, heat consumption of 1100-1200 kcal/kgH2o, series products of kgH2o evaporation capacity of 90-90 / h (single);
To adapt to the filter cake, dry paste high moisture materials, material moisture content can reach more than 85%, water cut is less than 0.5%;
Cover an area of an area small, less of choose and employ persons, equipment integrated operation cost is low.
Second, the drying process
Flash drying system is mainly composed of the heat source, feeder, the trap host, drying, moisture materials into the flash feeder (2), and into the drying chamber (3), (7) in mechanical dispersible tablet and the heater (1) under the action of warm air heating, rapid dry flour, after grading ring (6) classification into trap (4) capture, capture the material through the discharging mouth (8), tail gas by induced draft fan (5) closed.
The choice of three, dryer system
According to the characteristics of the drying material, mainly considering drying products, dry atmosphere, heat-sensitive, dispersion, choose the way to form a complete set of dry, most products select flash drying basic configuration mode can satisfy the requirement of production technology, supporting way system configuration choice figure for reference.
Heating mode and configuration
Heater is for conveying flash drying heat source equipment, can use steam electric heating mode of air heating (c), indirect heating of hot air stove, gas heating (b) (a), using for heating fuels such as coal, oil, gas, the input air temperature can be in 100-600 ℃.
feeder
Feeder is to all kinds of humidity and viscosity of the material continuously into the drying machine, the structure of the feeder designed according to the different physical properties, divided into single and double spiral feeding way, with shaft without shaft screw and multiaxial screw, etc., to prevent feeding bunker bulk material, increase the screwdown, when conveying liquid material, with special feeding way for delivery.
Drying host (drying chamber)
Drying the host assumes the circular structure and drying chamber set scattered leaves, at the bottom of the drying chamber equipped with clearance, factors such as shape, ring gap at the bottom of the drying chamber with the change of the drying material to carry on the adjustment, drying chamber from 250-2750 - mm diameter size changes, drying room temperature can be as high as 600 ℃.
Material catcher
Due to drying chamber after drying of material into the trap capture, dry powder, grain size, the proportion of adhesion after the selection of trap configuration there is a close relationship, the choice of trap commonly used a1, b1, form, material to choose from the aspects of material corrosion, heat resistance, etc.
In the drying process with special properties and special process requirement of material drying, such as inert gas protection, heat-sensitive, antistatic property, should adopt different ways of conform to the process of system configuration.
Closed loop system
System with inert gas (usually nitrogen) circulation, processing contain volatiles and dry can't contact with oxygen evaporation of volatiles in the condenser of the raw inert gas is added according to the pressure change and determine the oxygen content in the system.
Four, drying machine parameter selection
Drying machine production and heating temperature mainly about, see chart, drying machine production capacity within the scope of the series machines can reach several kilograms to several tons of production, the product series table drawings, the important parameters of dryer is the inlet and outlet temperature and velocity of drying chamber, the parameter selection should be based on product property, water content, proportion, the product particle size and so on, also should be tested in the lab, make reasonable choice.
Evaporation curve SKSZ spin flash dryer
The application of five, the dryer
Flash dryer is suitable for a variety of material drying, applied to different materials dry areas.Application field and under typical use such as:
Molybdenum concentrate drying machine, white drying machine, dryer, kaolin carbon black dryer
Company Profile
Liaoning Dongda Powder Engineering Technology Co., Ltd. was established in 1990. More than 50 technological personnel, specialists and professors from Northeastern University have built up the hard core of our scientific research and engineering design. We have obtained many patents in various technologies, such as drying and calcining technologies and powder making technologies, etc. Our equipment has been honored with dozens of awards at the national level.
Our equipment is widely used in industries of chemical, non-metallic, metallurgical, medical, and building with especially successful applications to calcining zinc oxide, nickel oxide, kaolin, molybdenum oxide, vanadium pentoxide and gypsum production. Our equipment has been sold many countries and regions, such as Indonesia, Malaysia, Korea, Vietnam and Taiwan, Russia, Belgium, Italy, etc.
Factory Capability
Our company has a complete system of research, design, manufacture, installation and debugging, after-sales service and its relevant engineering technicians. Our manufacture base occupies an area of 4000 m2 with modern machining equipment and core equipment for a general manufacture company. The annual manufacture capability can reach to more than 100 million yuan RMB in cooperation with our group company.
Domestic Business
We have developed a variety of dryers with flash evaporation technology as the representative. Several products have award the project of China Torch Program and state level new products as well as national patents. More than 400 sets of flash evaporation equipment have been sold to domestic and overseas factories or companies.
We have business relations with more than 500 companies in China and have business relations and technological cooperation with dozen of big chemical companies, such as Shandong Qilu Petrochemical, Jiangxi Jiujiang Petrochemical, Gansu Jinchuan Company, Shenyang Chemical Industries Group, Northeast Pharmaceutical Group, Shanghai Chlorine Alkali Company, Shanghai Baosteel Group Corp., Chengde Vanadium and Titanium Company, Beijing Huaneng Group, Datang Corp Group, etc. Also we have good cooperation relationships with more than ten universities and institutes in China.
International Cooperation
Internationally we conduct business and trade communications with more than ten countries and regions, such as Finland, South Korea, Singapore, Indonesia, Malaysia, Thailand and North Korea, etc.
Culture
DongDa Powder is striving to create a harmonious culture atmosphere in the enterprise, to build up a consolidated upward team spirit, to regularly organize professional training, technical communications to company employees, to send employees to study and learning abroad. We endeavor to make the employees dedicated to our Company; love to work, and to enjoy an cooperative working environment to create outstanding performance.
Contact Us
- Liaoning Dongda Powder Engineering Technology Co., Ltd.
- Contact namejoanna zhou
- Phone86-24-23201036
- AddressTianCi Street, Hunnan New District, Shenyang City, Liaoning Province, China Shenyang,Liaoning
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