WO2020063745A1 - 一种滚筒法直接干化无机污泥的方法及装置 - Google Patents
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Abstract
Description
Claims (13)
- 一种利用熔渣干化无机污泥的方法,其特征是,包括如下步骤:混合熔渣与污泥,待污泥含水量降低到3%~15%后,分离钢渣和干污泥。
- 如权利要求1所述的利用熔渣干化无机污泥的方法,其特征是,熔渣与污泥的混合质量比为1.5~3。
- 如权利要求1所述的利用熔渣干化无机污泥的方法,其特征是,采用筛分和旋分相结合的方式,实现钢渣和干污泥的分离。
- 如权利要求1所述的利用熔渣干化无机污泥的方法,其特征是,所述方法还包括尾气处理和尾泥处理步骤。
- 如权利要求4所述的利用熔渣干化无机污泥的方法,其特征是,所述尾气处理包括,采用湿法碱洗和/或活性炭吸附方法,将干化污泥所产生的尾气中存在的粉尘、硫化物和有机化合物处理后排放;所述尾泥处理包括,将所产生的粉尘经湿法洗涤或喷淋后聚集,与待干化污泥混合搅拌后,与熔渣混合进行干化处理。
- 如权利要求1所述的利用熔渣干化无机污泥的方法,其特征是,在容纳有钢球的滚筒中进行熔渣与污泥的混合。
- 如权利要求6所述的利用熔渣干化无机污泥的方法,其特征是,所述方法包括,熔渣和污泥分别由相应的输送装置输送入容纳有钢球的滚筒中,待污泥含水率降低到3%~15%后,钢渣和干污泥的混合物由位于滚筒出口端的渣泥输送装置输送到渣泥分离装置,进行钢渣与干污泥的分离;干化污泥过程中所产生的尾气中存在的粉尘、硫化物和有机化合物由滚筒出口进入尾气处理装置,处理后达标排放;尾气处理过程中分离出来的粉尘经由尾气处理装置的尘泥出口进入尾泥混配装置,与待干化的污泥混合后经由泥浆输送管道输入至所述滚筒内。
- 如权利要求3所述的利用熔渣干化无机污泥的方法,其特征是,所述渣泥分离装置采用筛分方式,筛网目数不小于60目。
- 如权利要求1所述的利用熔渣干化无机污泥的方法,其特征是,以分批、流加或半流加方式进行混合和干化。
- 一种滚筒法直接干化无机污泥的方法,其特征是,包括如下步骤:1)滚筒渣泥混合干化熔渣和污泥分别由各自的输送装置按一定的流量比例被送进滚筒,熔渣、污泥在滚筒转动和钢球滚动的作用下完成混合、换热、脱水、冷却和破碎,熔渣和污泥实现冷却和干化并直接排出;其中,无机污泥原始含水率为70%~99%,干化后目标含水率为3%~15%;熔渣与无机污泥的渣泥流量比为1.5~3.0,无机污泥的流量为10t/h~80t/h;2)渣泥分离采用筛分和旋分相结合的方式,实现钢渣和干污泥的分离;3)尾气处理采用湿法碱洗、活性炭吸附方法,将滚筒法干化污泥所产生的尾气中存在粉尘、硫化物、有机化合物处理后排放;4)尾泥处理尾气处理过程中产生的粉尘经湿法洗涤或喷淋后聚集,然后经由输送设备送入尾泥混配装置中,与原始污泥混合搅拌后,由污泥泵定期送入滚筒进行干化处理;经混合搅拌后的尾泥含水率与无机污泥原始含水率原始污泥含水率偏差不超过±5%。
- 如权利要求10所述的滚筒法直接干化无机污泥的方法,其特征是,步骤2)渣泥分离采用筛分方式,筛网目数不小于60目。
- 一种用于滚筒法直接干化无机污泥的装置,其特征在于,包括:滚筒,其容纳若干钢球;渣泥输送装置,其进口端对应所述滚筒的出口;渣泥分离装置,其进口端对应所述渣泥输送装置的出口,其出口对应不同料仓;尾气处理装置,其进气口通过输送管道连接所述滚筒的出口;尾泥混配装置,其进口通过输送管道连接所述尾气处理装置的尘泥出口;泥浆输送管道,用于连接尾泥混配装置的出口与滚筒的进口;污泥泵,设置在泥浆输送管道上,用于将污泥泵送至滚筒。
- 如权利要求12所述的用于滚筒法直接干化无机污泥的装置,其特征在于,所述渣泥分离装置采用筛分方式,筛网目数不小于60目。
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EP4190919A4 (en) * | 2020-07-31 | 2023-12-06 | Baoshan Iron & Steel Co., Ltd. | METHOD AND INTEGRATED DRYING DEVICE FOR DRY GRANULAR SLAG AND SLUDGE |
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JP7190560B2 (ja) | 2022-12-15 |
TWI815980B (zh) | 2023-09-21 |
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US20210347665A1 (en) | 2021-11-11 |
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US11891318B2 (en) | 2024-02-06 |
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