Drying device for producing sodium dihydrogen phosphate

Abstract

The invention discloses a drying device for producing sodium dihydrogen phosphate, which comprises a water filtering device, a water filtering plate is arranged under the water filtering device, a water filtering collecting chamber is arranged under the water filtering plate, and a discharge is arranged at the bottom of the side of the water filtering device. The tail end of the discharge pipe is connected with a drying chamber, the top of the drying chamber is provided with a plurality of ventilation pipes, and the drying chamber is provided with a spiral plate from top to bottom, and an aeration shaft is provided on the axis of the spiral plate, and on the aeration shaft A plurality of aeration rods are connected, and a plurality of aeration holes are arranged on the aeration rod; a plurality of evenly distributed through holes are arranged on the spiral plate; a refrigeration device is arranged in the drying chamber. The drying device of the present invention can improve the drying efficiency of the sodium dihydrogen phosphate, and keep it dried in a low-temperature environment, thereby avoiding thermal decomposition of the sodium dihydrogen phosphate.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a drying device for producing sodium dihydrogen phosphate. Background technique [0002] Sodium dihydrogen phosphate is colorless crystal or white crystalline powder. Odorless, salty, sour. When heated to 100°C, all crystal water will be lost, and it will turn into sodium metaphosphate when heated. Soluble in water, almost insoluble in ethanol, its aqueous solution is acidic. Sodium dihydrogen phosphate is used as an acidity regulator in food processing such as brewing and dairy products; it is used as a binding agent and stabilizer in meat products; , cooked minced meat are widely used. At the same time, it can also be used as a buffer, water softener, and used in the manufacture of sodium hexametaphosphate and sodium pyrophosphate. Therefore, in the field of chemical industry, the preparation of sodium dihydrogen phosphate is very much, and wherein, sodium dihydrogen phosp...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the drying efficiency is low in the drying process of the existing device; at the same time, though sodium dihydrogen phosphate itself is non-toxic, thermal decomposition will release toxic phosphorus oxide and sodium oxide smoke, while the existing The device did not take into acco...

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