Spray dryer for processing gelatin sludge

Abstract

The invention discloses a spray dryer for processing gelatin sludge. The spray dryer comprises a cylinder. The interior of the cylinder comprises an upper gas-liquid mixing chamber and a lower dryingchamber. The middle upper part of the gas-liquid mixing chamber is communicated with a sludge conveyer and a hot air convection device. Sludge conveyed by the sludge conveyer and hot air supplied by the hot air convection device form a convection current in the gas-liquid mixing chamber. Multiple air nozzles are uniformly distributed between the gas-liquid mixing chamber and the lower drying chamber. The air nozzles are used for forming an upward hot air current in the gas-liquid mixing chamber. The drying chamber is used for drying the sludge from the gas-liquid mixing chamber. Through the cooperation action of the sludge conveyer and the hot air convection device, the liquid-state sludge rapidly forms the granular sludge, a forming rate of sludge particles can be effectively improved bythe air nozzles, and the qualified drying sludge is obtained finally through the secondary drying. The energy consumption of a whole process is less, the time consumption is short, and problems of a traditional sludge drying machine that the energy consumption is high and the time consumption is long are solved.

Description

technical field [0001] The invention relates to the field of gelatin sludge drying equipment, in particular to a spray dryer used for gelatin sludge treatment. Background technique [0002] In the production of gelatin, the generation of waste water mainly comes from the processes of degreasing, pickling, liming, neutralization, and glue making. When the waste water is purified, it will produce a large amount of sludge. Traditionally, the sewage generated by gelatin waste water The sludge treatment method is to send the sludge to a filter press for pressure filtration, and then obtain a filter cake with a water content of 18-27wt%, which is dried in the yard and then sent to the fertilizer plant. Because the filter cake contains a large amount of bone waste, organic matter and colloids, during the drying process of the storage yard, under the action of microorganisms, the filter cake is decomposed by microorganisms and releases foul-smelling gases, resulting in a bad environ...

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Problems solved by technology

[0005] The object of the invention of the present invention is: in view of the above-mentioned existing problems, provide a kind of spray drier that is used for gelatin sludge treatment, through the cooperative action of sludge conveyer and hot air convection device, make the sludge in liquid state rapidly heat Granular sludge is formed under drying, and the rising hot air flow formed by the air nozzle can effectively improve the forming rate of sludge particles. Finally, qualified granular dried sludge is obtained after secondary drying in the drying chamber. The whole process consumes less energy. Short time consumption, which solves the problems of high energy consumption and long time consumption of traditional sludge dryers

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