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System and process for resourceful treatment of waste incineration fly ash
The invention discloses a system and a process for resourceful treatment of waste incineration fly ash. The system comprises a thermal desorption system, a water washing system and a drying system, wherein the thermal desorption system is provided with multiple stages of cyclone separators; each stage of cyclone separator simultaneously has the functions of gas-solid mixing, heat exchange and gas-solid separation; hot flue gas is introduced into a flue gas inlet of the last stage of cyclone separator; the flue gas and the fly ash are subjected to heat exchange in the cyclone separator; and organic toxicants such as dioxin in the fly ash are pyrolyzed and gasified at high temperature. The fly ash subjected to thermal desorption treatment passes through the waster washing system to remove insoluble salt, liquid enters a crystallization salt-making system to prepare sodium chloride and potassium chloride products, and solid is dried by a drying system and then enters a cement making system to prepare a cement finished product. The system and the process are combined to realize harmlessness, recycling and reduction of the fly ash.
本发明公开了一种资源化处理垃圾焚烧飞灰的系统及工艺，包括热脱附系统、水洗系统和干燥系统；热脱附系统设有多级旋风分离器，每级旋风分离器同时兼具气固混合、换热和气固分离的功能，在末级旋风分离器的烟气进口中通入热烟气，烟气与飞灰在旋风分离器内进行热交换，飞灰中二噁英等有机毒物在高温热解气化。经过热脱附处理后的飞灰先经过水洗系统去难溶性盐，液体进入结晶制盐系统制成氯化钠和氯化钾产物，固体先经过干燥系统干燥后进入水泥制作系统制成水泥成品。本发明的系统和工艺结合实现飞灰的无害化、资源化和减量化。
System and process for resourceful treatment of waste incineration fly ash
The invention discloses a system and a process for resourceful treatment of waste incineration fly ash. The system comprises a thermal desorption system, a water washing system and a drying system, wherein the thermal desorption system is provided with multiple stages of cyclone separators; each stage of cyclone separator simultaneously has the functions of gas-solid mixing, heat exchange and gas-solid separation; hot flue gas is introduced into a flue gas inlet of the last stage of cyclone separator; the flue gas and the fly ash are subjected to heat exchange in the cyclone separator; and organic toxicants such as dioxin in the fly ash are pyrolyzed and gasified at high temperature. The fly ash subjected to thermal desorption treatment passes through the waster washing system to remove insoluble salt, liquid enters a crystallization salt-making system to prepare sodium chloride and potassium chloride products, and solid is dried by a drying system and then enters a cement making system to prepare a cement finished product. The system and the process are combined to realize harmlessness, recycling and reduction of the fly ash.
本发明公开了一种资源化处理垃圾焚烧飞灰的系统及工艺，包括热脱附系统、水洗系统和干燥系统；热脱附系统设有多级旋风分离器，每级旋风分离器同时兼具气固混合、换热和气固分离的功能，在末级旋风分离器的烟气进口中通入热烟气，烟气与飞灰在旋风分离器内进行热交换，飞灰中二噁英等有机毒物在高温热解气化。经过热脱附处理后的飞灰先经过水洗系统去难溶性盐，液体进入结晶制盐系统制成氯化钠和氯化钾产物，固体先经过干燥系统干燥后进入水泥制作系统制成水泥成品。本发明的系统和工艺结合实现飞灰的无害化、资源化和减量化。
System and process for resourceful treatment of waste incineration fly ash
一种资源化处理垃圾焚烧飞灰的系统及工艺
CAI ZHUHUA (author) / CHEN ZONGDA (author) / RAN SHUBING (author) / WANG ZHICHENG (author) / LEI JUNXI (author)
2021-12-07
Patent
Electronic Resource
Chinese
IPC:
B04C
APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
,
Zentrifugalapparate mit freier Wirbelströmung, z.B. Zyklone
/
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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