Low-pressure boiling and solidifying device of liquid polyaluminium chloride
A technology of polyaluminum chloride and low-pressure boiling, which is applied in the fields of aluminum chloride, aluminum halide, flocculation/sedimentation water/sewage treatment, etc., which can solve the problems of high heat consumption, low thermal efficiency, and large equipment volume, and improve production Efficiency, reduced product cost, and simple structure
Active Publication Date: 2013-03-20
广东慧信环保有限公司
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Problems solved by technology
However, spray drying also has the following disadvantages: first, when the air temperature is lower than 150°C, the volumetric heat transfer coefficient is low, and the volume of the equipment used is large; second, the separation requirements for the gas-solid mixture are relatively high, and two-stage dust removal is generally required The third is that the thermal efficiency is not high, and the heat consumption is large
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[0017] refer to figure 1 , a kind of liquid polyaluminum chloride low-pressure boiling solidification device provided by the present invention comprises material bin 1, and described material bin 1 is provided with feed inlet 2, discharge outlet 3, preferably, described feed inlet 2 is provided with Stop valve 22, the discharge port 3 is provided with a sealing cover 23.
[0018] A heating device 4 for heating the material bin 1 is provided below the material bin 1, a steam outlet 5 is arranged above the material bin 1, and a steam pipe 6 is connected to the steam outlet 5, and the steam pipe 6 is connected with a pipe for extracting A vacuum device 7 for the air inside the material bin 1. Since the liquid generates vapor pressure when it volatilizes, when the vapor pressure (saturated vapor pressure) is equal to the external pressure, the liquid will boil, and the temperature at this time is the boiling point of the liquid. Therefore, in this embodiment, the vacuum device 7...
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The invention discloses a low-pressure boiling and solidifying device of liquid polyaluminium chloride, comprising a material bin, wherein the material bin is provided with a material inlet and a material outlet; a heating device for supplying heat to the material bin is arranged below the material bin; a steam outlet is arranged above the material bin and connected with a steam pipeline; the steam pipeline is connected with a vacuum pumping device for pumping the air in the material bin; and a stirrer for smashing the solidifying material is also arranged in the material bin. By means of the device, the moisture in the material can be largely evaporated at the low temperature to ensure that liquid polyaluminium chloride is rapidly dehydrated till solidification. The device disclosed by the invention is simple in structure and automatic in control, has the advantages of increasing the production efficiency, saving the energy, reducing the product cost and the like and is suitable for large-scale popularization and application.
Description
technical field [0001] The invention relates to a curing device, in particular to a low-pressure boiling curing device for liquid polyaluminum chloride. Background technique [0002] Liquid polyaluminum chloride is an inorganic polymer compound, because of its unique physical and chemical properties, it is currently one of the most widely used flocculants. Liquid polyaluminum chloride is mainly used in the purification treatment of tap water, production sewage and industrial wastewater. Polyaluminum chloride has a large molecular structure and strong adsorption capacity. It only needs a small amount to achieve a good treatment effect, thereby greatly reducing the treatment cost. [0003] Since liquid polyaluminum chloride is in an undried state, tank trucks are required for transportation, and the unit transportation cost is too high, so companies generally convert liquid polyaluminum chloride into solids that are easier to transport for sale. The most commonly used drying...
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Inventor 谭铭卓龙德顺
Owner 广东慧信环保有限公司