【正文】
esis,separation and crystallization of the three main granulation processes. The design mainly includes the entire process of urea production process design,synthesis and granulation Section of the material balance and heat balance selection of equipment, factory layout design. Design plans include major urea production process maps,profiles workshop,workshop floor plan and palnt layout. KEY WORDS:Urea,Process Design 1. 尿素的概況 尿素外觀為白色晶體或粉末,是動(dòng)物蛋白質(zhì)代謝后的產(chǎn)物,通常用作植物的氮肥。它在肝合成,其過程被稱為尿素循環(huán)。尿素易溶于水,在 20℃時(shí) 100ml 水中可溶解 105g,水溶液呈中性反應(yīng)。 粒狀尿素成品規(guī)格:(質(zhì)量比) 含氮量 46%(折合成尿素 %,其中不包括縮二脲含氮量) 縮二脲 % 水分 % 其他雜質(zhì) % 2 2. 工藝設(shè)計(jì)