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A platform for research: civil engineering, architecture and urbanism
Resourceful treatment process for waste incineration fly ash washing liquid
The invention discloses a resourceful treatment process for waste incineration fly ash washing liquid, fly ash is pretreated and then washed to remove chlorine, washed fly ash slag can be used as a raw material for cement production, and washed washing liquid is subjected to resourceful utilization. The resource utilization comprises the following steps: adding an organic precipitant into the water washing liquid, reacting for a certain time at a certain temperature to remove heavy metals in the water washing liquid, concentrating the water washing liquid without the heavy metals through electrodialysis, evaporating and crystallizing the concentrated liquid to recover chlorine salts, and recycling fresh water for fly ash water washing, so that the water consumption for fly ash water washing is reduced. The industrial energy consumption can be reduced, and the cost is saved; and the water washing liquid is subjected to resource utilization, so that the economic benefit of the fly ash is improved, and the loss of water resources in fly ash treatment is reduced.
本发明公开了一种垃圾焚烧飞灰水洗液资源化处理的工艺，飞灰经过预处理后进行水洗除氯，水洗后的飞灰渣可作为原料进行水泥生产，水洗后的水洗液进行资源化利用。所述的资源化利用为，在水洗液中加入有机沉淀剂，在一定温度下反应一定时间来脱除水洗液中的重金属，脱除重金属的水洗液通过电渗析浓缩，浓缩后的液体蒸发结晶回收氯盐，淡水回用于飞灰水洗，减少飞灰水洗的用水量。该发明可降低工业能耗，节约成本；且对水洗液进行了资源化利用，进而提高飞灰的经济效益，减少飞灰处理中的水资源的损耗。
Resourceful treatment process for waste incineration fly ash washing liquid
The invention discloses a resourceful treatment process for waste incineration fly ash washing liquid, fly ash is pretreated and then washed to remove chlorine, washed fly ash slag can be used as a raw material for cement production, and washed washing liquid is subjected to resourceful utilization. The resource utilization comprises the following steps: adding an organic precipitant into the water washing liquid, reacting for a certain time at a certain temperature to remove heavy metals in the water washing liquid, concentrating the water washing liquid without the heavy metals through electrodialysis, evaporating and crystallizing the concentrated liquid to recover chlorine salts, and recycling fresh water for fly ash water washing, so that the water consumption for fly ash water washing is reduced. The industrial energy consumption can be reduced, and the cost is saved; and the water washing liquid is subjected to resource utilization, so that the economic benefit of the fly ash is improved, and the loss of water resources in fly ash treatment is reduced.
本发明公开了一种垃圾焚烧飞灰水洗液资源化处理的工艺，飞灰经过预处理后进行水洗除氯，水洗后的飞灰渣可作为原料进行水泥生产，水洗后的水洗液进行资源化利用。所述的资源化利用为，在水洗液中加入有机沉淀剂，在一定温度下反应一定时间来脱除水洗液中的重金属，脱除重金属的水洗液通过电渗析浓缩，浓缩后的液体蒸发结晶回收氯盐，淡水回用于飞灰水洗，减少飞灰水洗的用水量。该发明可降低工业能耗，节约成本；且对水洗液进行了资源化利用，进而提高飞灰的经济效益，减少飞灰处理中的水资源的损耗。
Resourceful treatment process for waste incineration fly ash washing liquid
一种垃圾焚烧飞灰水洗液资源化处理的工艺
YUAN JUNSHENG (author) / HU DONGLIANG (author) / CAI CAIHONG (author) / CAI DANIU (author) / ZHANG YINGWU (author) / WANG YICONG (author) / WU ZHIDA (author) / CAI YUERONG (author)
2024-07-30
Patent
Electronic Resource
Chinese
IPC:
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C01D
Verbindungen der Alkalimetalle, d.h. des Lithiums, Natriums, Kaliums, Rubidiums, Cäsiums oder Franciums
,
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
/
C04B
Kalk
,
LIME
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