detailed description

Vitamin C drugs are white monoclinic crystals or crystalline powders with a melting point of 190 ℃ -192 ℃. They have no foul odor or acid, and their color gradually turns slightly yellow over time. This drug is easily soluble in water, slightly soluble in ethanol, and insoluble in ether and chloroform. Its aqueous solution exhibits an acidic reaction. The specific rotation of a 5% (W/V) aqueous solution with a pH of 2.1-2.6 (W/V) is+20.5 ° to 21.5 °

Fluidized bed parameters:

(1) Drying form: vibrating fluidized bed

(2) Heat source: saturated vapor pressure: ≤ 0.8MPa

(3) Drying method: The air treated by a medium to low efficiency filter is heated (the heater is made of stainless steel 304 tube and stainless steel 304 fins), and the hot air enters the equipment after being treated by a high-temperature filter.

(4) Dehumidification method: Clean air is dehumidified by a surface cooler and enters the equipment. Cold water temperature: 15 ℃ in winter and 9 ℃ in summer.

(5) Basic requirements for equipment manufacturing: ① Compliance with FDA requirements. Require the material in contact with the material to be 316L, and all other materials to be 304 (including air duct flanges). The equipment chamber and the inner wall of the air duct should be polished with a polishing accuracy of less than 0.4 μ m, and there should be no wall hanging phenomenon. The entire equipment needs to undergo anti-static treatment. Insulate the host equipment and hot air ducts with a stainless steel 304 outer skin and argon arc welding seams to meet production capacity requirements.