| 摘要 |
<p>Disclosed is a process for producing the crystal of glutamic acid, which includes filtering the fermented liquid of glutamic acid by ceramic membrane to remove the thallus in the fermented liquid of glutamic acid, then making the obtained clearing fermented liquid of glutamic acid gradient temperature lowering crystallization using batch continuous isoelectric method in the crystallizing tank, and sulfuric acid is added in the crystallizing tank by calandria porous showering method to reduce pH value, wherein the feed liquid is discharged continuously into the lower-stage tank using the mode of overflow on the top of tank, and in the lower-stage tank 2/3 of feed liquid is from the upper-stage tank by overflow and 1/3 of feed liquid is concentrated liquid. The crystal of glutamic acid obtained by the method is the alpha mode.</p> |
