Polyaluminum Chloride Production Line
Polyaluminium chloride, commonly known as water purifying agent, or coagulant, also known as polyaluminium chloride, referred to as polyaluminum, the English name PACÃ¯¼Å together with basic aluminum chloride, spray-dried polyaluminum chloride belongs to the related class of water purification agents.
It is a polynuclear, multi-nuclear complex cationic inorganic polymer flocculant. The appearance of the solid product is yellow or white solid powder, and its chemical formula is [AL2(OH)nCL6-n]m. (wherein, 1 N 5, m 10), and it is easily soluble in water, has strong bridging adsorption, and undergoes physical changes such as electrochemistry, coagulation, adsorption and precipitation in the hydrolysis process, and finally produces [AL2(OH)3 (OH) 3] to achieve purification purposes.
1. No additional additives are needed, the floc formation is fast and coarse, the activity is high, the sedimentation is high, and the precipitation is fast. Therefore, the purification effect on high turbidity water is particularly remarkable.
2. It is suitable for wide pH range and reduces the PH value of raw water, so it has no corrosive effect on pipeline equipment.
3. Strong decolorization, strong detergency. The water purification effect is 4-6 times that of AL2(SO4)3 and 3-5 times that of ALCL3. Small dosage, high efficiency; low cost and high benefit.
This product is mainly used for the purification of domestic drinking water and industrial wastewater, special water quality treatment (such as oily sewage, printing and dyeing papermaking sewage, smelting sewage, containing radioactive characteristics, containing Pb, Cr and other toxic heavy metals and F-containing sewage, etc.). In addition, it is also widely used in precision casting, oil drilling, leather making, metallurgical papermaking and so on.
The high-efficiency spray-polymerized aluminum chloride designed and produced by our company adopts acid-soluble process:
The first method is to carry out the reaction by using hydrochloric acid and bauxite and calcium aluminate powder as raw materials. The reaction liquid can be filtered by a filter press, or the natural sedimentation method of the polymerization tank can be used, and the liquid is generated by a direct combustion type hot blast stove to generate a heat source. It is made by centrifugal spray drying and is used for the treatment of industrial sewage. The container can be packed up to 25 tons by natural sedimentation.
The second method uses hydrochloric acid, aluminum hydroxide and calcium aluminate powder as raw materials, and is carried out in a reaction vessel under normal pressure. The reaction liquid can be filtered by a filter press, and the liquid is subjected to a direct-fired or heat-exchanged hot-air stove. The heat source is generated by centrifugal spray drying, and the product is used for the treatment of drinking water.
The centrifugal spray drying tower adopts the advanced downwind mode, which is more energy-saving, the product quality is more stable, the life of the drying tower is prolonged, and the drying cost is greatly reduced. It is more active than the spray-dried polyaluminum chloride in the updraft mode, and its performance is more incomparable than the conventional method of drying polyaluminum chloride.
The reactor adopts a more humanized design, adopts the above-ground reaction kettle, and the reactor is treated with a new composite material, which eliminates the shortcomings of the old reactor, such as short service life and high maintenance cost. The gas of the reactor is absorbed more reasonably, and the harmful components can hardly be detected in the exhaust gas. The entire wastewater generated during the reaction and drying process is returned to the production and there is no discharge of wastewater.