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1-30万吨/年 有机肥生产工艺及成套设备

2020
10/22
被阅读:142次

本工艺主要针对养殖场粪便、造纸厂污泥、糠醛厂残渣、城市污水处理厂的浓缩污泥等有机原料设计。为了降低物料的水分,提高有机质、杀灭病菌,首先应对原料进行发酵处理,在此过程中,添加好氧发酵必须的有机成分和养分

1-30万吨/年 有机肥生产工艺及成套设备

1-30万吨/年 有机肥生产工艺及成套设备

10000-300000t/y

Biology organic ferfilizer

process & equipments

■ 流程说明

◎(1)本工艺主要针对养殖场粪便、造纸厂污泥、糠醛厂残渣、城市污水处理厂的浓缩污泥等有机原料设计。

◎(2)为了降低物料的水分,提高有机质、杀灭病菌,首先应对原料进行发酵处理,在此过程中,添加好氧发酵必须的有机成分和养分,通过发酵过程中产生的高温杀灭病菌,蒸发水分,将纤维类物质腐熟分解。

◎(3)通过上述工序后,物料水分降至35%以下,有机质提高5%以上,利用专用有机物料粉碎机进行粉碎,使物料粒径达到1.5mm以下,满足造粒的需求。

◎(4)粉状的N、P、K、填料(主要是粘结剂)等无机原料经计量后与粉状有机物质同时进入混合工序,掺混均匀的物料经皮带输送机送入造粒机。

◎(5)造粒之后的物料尽管已形成颗粒,但此时颗粒水分偏高,无法满足包装运输的要求,该物料经皮带输送机送至回转式干燥机进行干燥。出干燥机的物料温度较高,通过回转式冷却机进行冷却处理,进一步提高颗粒强度、降低水分,之后经过粗筛、细筛,筛除大颗粒和细粉,获得成品。大颗粒返料经返料粉碎机粉碎后与细筛筛下的细粉共同关注造粒机,再次参与造粒过程。

■ Description of Process Flow

◎ (1) This process is designed for mainly sludge from paper mill, residua from furfrual factory, dejecta from breeding field and thickened sludge from municipal sewage disposal works.

◎ (2) The common points of the above materials are. containing organic substance of 25%~45%, higher moisture conten, bulky granule and containing fiber. Thereby first ferment raw materials in order to reduce materials, moisture, increase organic substance and kill zyme. During fermenting raw materials, add organic components and nutrients necessary for aerobic ferment. thereby generate high temperature which can synchronously kill zyme, vapor moisture and decompose fiber-type substances.

◎ (3) After the above process step. the moisture of the materials can reach below 35% and the organic substance can increase by above 5%. Use special Organic Substance Pulverizer to pulverize the materials to make the material granule diameter reach below 1.5mm which can meet the requliement for granulating.

◎ (4) After being metered. the powdery inorganic materials such as N.P.K and fillers (mainly including bond) etc. go into mixing process-step synchronoushy together with the powdery organic substances. The materials mixed evenly are conveyed into Granulator by belt conveyor. During granulating. properly control the proportion between the moisture and fillers. which can efficiently control the bulk and strength of the granules and ensure a final product rate of 70%~95% (final product rate is dependent on granulating way).

◎ (5) Although the materials after granulating have come into being granules. the granules at this time have a quite high moisture. which can't meet the requirements of packaging and shipping . Thus,the materials are conveyed to rotary drier by belt conveyor for drying , The temperature of the materiais coming out of drier is quite high. and then the materials are sent to rotary cooler for cooling to further increase the granule strength and reduce the moisture. And then, the cooled granules are coorse-sieved and fine-sieved to separate large granules and fine powder ,finally final products are achieved.

1-30万吨/年 有机肥生产工艺及成套设备
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