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Nano calcium carbonate production process
The invention discloses a nano calcium carbonate production process which comprises the following steps: lifting limestone and anthracite which are crushed to a certain specification to the top of a lime kiln according to a certain ratio, uniformly distributing the materials in the lime kiln by a distributor, blowing air from the bottom of the lime kiln by using an air blower, combusting the anthracite in the kiln, exchanging heat of calcined kiln gas containing carbon dioxide by using a heat exchanger, then feeding the calcined kiln gas into a kiln gas purification system, discharging quicklime from the kiln bottom after exchanging heat with air, screening out ash slag from the discharged quicklime in a rotary screen, lifting the quicklime into a lime bin (the quicklime kiln gas contains 30% of CO2 and has the temperature of about 200-300 DEG C), reducing the temperature by using the heat exchanger, removing smoke dust and sulfide gas, then feeding the quicklime kiln gas into a gas-water separator to separate water mist, and feeding the purified lime kiln gas to a carbonization section; and the process has the advantages that the normal production process is complete, the efficiency and yield of the nano calcium carbonate are improved, the production cost of the nano calcium carbonate is reduced, the trouble of manual packaging and storage is reduced, and the production efficiency of the nano calcium carbonate is improved.
本发明公开了一种纳米碳酸钙生产工艺，将破碎到一定规格的石灰石和无烟煤按一定的配比提升至石灰窑顶部，由布料器将物料均匀地分布在石灰窑内，利用鼓风机从石灰窑底部鼓风，燃烧窑内无烟煤，煅烧后含二氧化碳的窑气经换热器换热后进入窑气净化系统，生石灰则在与空气换热后从窑底排出，排出的生石灰在回转筛中筛出灰渣，生石灰提升至石灰仓中(石灰窑气含CO2约30％，温度约200～300℃经换热器降温除去烟尘、硫化物气体后再进入气‑水分离器分离水雾，净化后的石灰窑气送往碳化工段)；本发明具有完整的正产流程、提高了纳米碳酸钙的效率和产量、降低了纳米碳酸钙的生产成本、减少人工包装和储存的麻烦，提高纳米碳酸钙的生产效率的优点。
Nano calcium carbonate production process
The invention discloses a nano calcium carbonate production process which comprises the following steps: lifting limestone and anthracite which are crushed to a certain specification to the top of a lime kiln according to a certain ratio, uniformly distributing the materials in the lime kiln by a distributor, blowing air from the bottom of the lime kiln by using an air blower, combusting the anthracite in the kiln, exchanging heat of calcined kiln gas containing carbon dioxide by using a heat exchanger, then feeding the calcined kiln gas into a kiln gas purification system, discharging quicklime from the kiln bottom after exchanging heat with air, screening out ash slag from the discharged quicklime in a rotary screen, lifting the quicklime into a lime bin (the quicklime kiln gas contains 30% of CO2 and has the temperature of about 200-300 DEG C), reducing the temperature by using the heat exchanger, removing smoke dust and sulfide gas, then feeding the quicklime kiln gas into a gas-water separator to separate water mist, and feeding the purified lime kiln gas to a carbonization section; and the process has the advantages that the normal production process is complete, the efficiency and yield of the nano calcium carbonate are improved, the production cost of the nano calcium carbonate is reduced, the trouble of manual packaging and storage is reduced, and the production efficiency of the nano calcium carbonate is improved.
本发明公开了一种纳米碳酸钙生产工艺，将破碎到一定规格的石灰石和无烟煤按一定的配比提升至石灰窑顶部，由布料器将物料均匀地分布在石灰窑内，利用鼓风机从石灰窑底部鼓风，燃烧窑内无烟煤，煅烧后含二氧化碳的窑气经换热器换热后进入窑气净化系统，生石灰则在与空气换热后从窑底排出，排出的生石灰在回转筛中筛出灰渣，生石灰提升至石灰仓中(石灰窑气含CO2约30％，温度约200～300℃经换热器降温除去烟尘、硫化物气体后再进入气‑水分离器分离水雾，净化后的石灰窑气送往碳化工段)；本发明具有完整的正产流程、提高了纳米碳酸钙的效率和产量、降低了纳米碳酸钙的生产成本、减少人工包装和储存的麻烦，提高纳米碳酸钙的生产效率的优点。
Nano calcium carbonate production process
一种纳米碳酸钙生产工艺
LEI JIANQIANG (author)
2022-01-04
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
/
B82Y
Bestimmter Gebrauch oder bestimmte Anwendung von Nanostrukturen
,
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
/
C04B
Kalk
,
LIME
| European Patent Office | 2017