The utility model belongs to a sulfur based compound fertilizer heat recovery device, which includes a drying granulation machine, the tail gas outlet of the drying granulation machine is connected with the granulation tail gas outlet of the air heat exchanger through the exhaust inlet of the air heat exchanger, and the air inlet of the air heat exchanger is connected with the hot air outlet of the air heat exchanger and the hot air is out. The mouth is connected to the room temperature air pipe through the 13 pass. The third end of the first three is connected to the outlet of the hot air furnace through the two or three pass, and the third end of the two or three pass is connected to the hot air inlet of the drying granulation machine through the air ducting machine. The room temperature air pipe is connected by the inlet of the blower and the hot air furnace, and the bottom of the drying granulation machine is described. One side of the drying granulation machine is provided with a compound fertilizer raw material slurry on one side of the drying granulation machine, with simple structure and reasonable design, which can reduce the temperature of the tail gas of the granulation, reduce the energy consumed to reduce the temperature of the washing water and improve the washing effect.
【技术实现步骤摘要】
一种硫基复合肥热量回收装置
本技术属于喷浆造粒硫基复合肥
,具体涉及一种硫基复合肥热量回收装置。
技术介绍
硫基复合肥中的硫元素是继氮、磷、钾后的第四大营养元素,可有效改善土壤中的缺硫状况,能有效提高各类经济作物的外观、品质,特别是对马铃薯、西瓜、甜菜等忌氯作物,硫基复合肥更是不可缺少的。目前国内硫基复合肥生产一般采用低温转化喷浆造粒工艺:氯化钾与浓硫酸反应,得到不含氯元素的硫酸氢钾溶液,同时副产浓度为31%wt的工业盐酸。然后经硫酸氢钾溶液与磷酸一铵、尿素混合制成混酸料浆;混酸料浆在管式反应器中与氨发生中和反应后,喷入烘干造粒机中涂布成粒得到复合肥颗粒;最后再经筛分、冷却、包膜等处理后包装出售。其中烘干造粒机是硫基复合肥生产的核心设备。由于喷入烘干造粒机中的料浆中含有一定量的水分(20%-30%wt),在造粒中需要将料浆快速烘干,除去水分,以得到硬度、外观等都符合产品要求的复合肥颗粒。烘干过程一般采用高达450℃左右的热空气进行,而热空气采用热风炉将室温空气加热至800-1000℃,再引入室温空气调温至450℃后吹入喷浆造粒机。经过烘干的颗粒进入筛分等后续 ...
【技术保护点】
一种硫基复合肥热量回收装置,包括烘干造粒机(1),其特征在于:烘干造粒机(1)的尾气出口(2)通过空气换热器(3)的尾气进口(4)与空气换热器(3)的造粒尾气出口(15)相连,空气换热器(3)的室温空气进口(14)与空气换热器(3)的热空气出口(5)相连通,热空气出口(5)通过第一三通(6)与室温空气管道(7)相连,第一三通(6)的第三端通过第二三通(8)与热风炉(9)出口相连,第二三通(8)的第三端通过引风机(10)与烘干造粒机(1)的热空气进口(11)相连,所述室温空气管道(7)通过鼓风机(12)和热风炉(9)进口相连,所述烘干造粒机(1)的底部设有复合肥颗粒出口(13 ...
【技术特征摘要】
1.一种硫基复合肥热量回收装置,包括烘干造粒机(1),其特征在于:烘干造粒机(1)的尾气出口(2)通过空气换热器(3)的尾气进口(4)与空气换热器(3)的造粒尾气出口(15)相连,空气换热器(3)的室温空气进口(14)与空气换热器(3)的热空气出口(5)相连通,热空气出口(5)通过第一三通(6)与室温空气管道(7)相连,...
【专利技术属性】
技术研发人员:温云,郝春源,孙帅,闫雪梅,程子防,宋仁委,尚卫平,张伟利,
申请(专利权)人:河南心连心化肥有限公司,
类型:新型
国别省市:河南,41
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