XSG Spin Flash Dryer

DESCRIPTION

XZG Series Spin Flash Dryer is continuous drying equipment specially designed for shaped cake, cream paste, and paste slurry materials. The clean heat medium goes into the drying room from the tangent direction and creates a strong rotary vortex air current when it’s in motion with the stirrer. The wet material is added to the drying room in a fixed quantity, and it will be crushed and dry under high speed stirring action. The top of the drying room has particle size classification, the big particles will be stopped by the classifier and the fine powder will be discharged from the center of the ring and collected by the cyclone separator. The big particles will return to the drying room and continue to be crushed and dry.

FEATURES

(1) The raw material is processed by cutting, shearing, blowing, floating, and rotating, then become granulated shape and separated greatly; the relative velocity between solid phase and gas phase is great, this strengthens the process of heating exchange.
(2) Design with compact structure and required small occupied area, and the machine is easy to control and maintain.
(3) The hot air enters into the bottom of machine and creates strong rotating airflow; it can wash out material that sticking on the inside surface.
(4) The high temperature area is at the bottom of the machine, the heat sensitive raw material will not directly contact with heating surface. As a result, carbonization and color change problems can be solved.
(5) The dryer is running under negative or micro negative pressure, there is no need other crushing machine to crush raw material, and the circumstance pollution will not occur.
(6) A segmenting ring and a rotational flow piece are equipped in the upper drying room in order to control granulated size and final moisture to satisfy required moisture containing rate and granulation.

WORKING PRINCIPLE

The hot air enters into the bottom of the drier in tangent direction. Under the driving of the stirrer, a powerful rotating wind field is formed. The paste state materials enter into the drier through the screw feeder. Under the powerful function of the stirring vanes at high-speed rotation, the materials are distributed under the function of strike, friction and shearing force. The cake state materials will be smashed and contact the hot air fully and the materials are heated and dried. The dehydrated materials will go up with the hot-air flow. The step rings will stop and keep the big particles. Small particles will be discharged out of the drier from the center of the machine and the material will be collected by cyclone separator of dust collector. The wet or big particles will be swing towards to the wall by the centrifugal force function and the materials will be crushed again after fall down to the bottom.

APPLICABLE MATERIALS

Organics: Atrazine (Pesticides), Cadmium Laurate, Benzoic Acid, Germicide, Sodium Oxalate, Cellulose Acetate, Organic Pigments, and etc. Dyes: Anthraquinone, Black Iiron Oxide, Indigo Pigments, Butyric Acid, Titanium Hydroxide, Zinc Sulfide, Azo Dye Intermediates, and etc. Inorganic: Borax, Calcium Carbonate, Hydroxide, Copper Sulfate, Iron Oxide, Barium Carbonate, Antimony Trioxide, Metal Hydroxides, Heavy Metal Salts, Synthetic Cryolite, and etc. Food: Soy Protein, Gelatinized Starch, Lees, Wheat Sugar, Wheat Starch, and etc.

TECHNICAL PARAMETERS

Item \ Model	XSG-2	XSG-4	XSG-6	XSG-8	XSG-10	XSG-12	XSG-16	XSG-20
Tower Diameter (mm)	200	400	600	800	1000	1200	1600	2000
Air amount (M3/h)	350-500	1150-2000	2450-4500	4450-7550	7000-12500	10000-20000	18000-36000	28200-56500
Water Evaporation (kg/h)	12-17	40-70	80-150	150-250	230-4250	300-600	600-1000	1000-1500
Total Power (kW)	10	20	40	65	85	105	150	230
Max. Equipment Height (m)	4.0	4.8	5.8	6.5	7.1	7.8	8.8	10.1
Occupied Area (m2)	15	20	28	35	40	52	80	150

Note:
1. The evaporated amount of moistureis calculated when the temperature of inlet is l80oC and Ihe temperature of outlet is180oC and the temperature of outlet is 180oC;
2. Besides the models above mentioned, special specification can also be made as request;
3. The equipped capacity above mentioned is standard. The power can also be decreased in accordance with pracitcal condition.

Raw Material Example & Characteristics (based on Model XZG-6)

Item \ Raw Material	Stearate Acid	Aluminum hydroxide	Zinc Carbonate	Monosultap	TMTD	DSD Acid	Red Iron Oxide	Antimony Dioxide	Cuprous Chloride	White carbon black
Inlet Air Temperature (oC)	150	180	150	120	140	150	200	180	200	280
Primary Moisture (%)	80	55	80	30	65	60	60	45	30	85
Final Moisture (%)	0.5	1.5	1.0	1.0	0.5	0.5	0.5	1.0	3.0	5.0
Practical Drying Capacity (kg/h)	140-160	250-280	130-170	80-110	80-120	80-120	300-350	280-320	290-310	250-300

Item \ Raw Material	ZDC accelerant ZDC	Oil soluble ink	Substitute Zinc Manganate	Phthaloc- yanin dye	Calcium citrate	Superfine calcium carbonate	Slurry treatment agent	Sodium isocyanurate dioxide	Sodium isocyanurate trioxide
Inlet Air Temperature (oC)	150	150	120	150	140	160	200	180	150
Primary Moisture (%)	60	45	30	55	40	70	75	25	30
Final Moisture (%)	0.5	2.0	1.0	1.0	1.0	1.5	5.0	0.2-2	1.0
Practical Drying Capacity (kg/h)	80-110	350-380	120-150	160-180	300-350	430-470	290-310	80-120	90-150