Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
System and method for capturing and mineralizing converter flue gas CO2 through steel slag-wastewater
The invention discloses a system and a method for capturing and mineralizing CO2 in converter flue gas by steel slag-wastewater. The method comprises the following steps: step (1), crushing steel slag and grinding into steel slag micro powder with the particle size of less than 150 microns; (2) the steel slag micro powder and the steel mill wastewater are simultaneously placed in mixing equipment for a Ca < 2 + > leaching reaction; (3) conveying the mixed steel slag slurry from which Ca < 2 + > is leached to a mineralization reactor, and meanwhile, introducing converter flue gas to carry out gas-liquid-solid three-phase mineralization reaction; and (4) carrying out solid-liquid separation on the mineralized slurry after the reaction is finished to obtain mineralized steel slag. Compared with a two-phase mineralization reaction, the method has the advantages that the carbon sequestration rate of the steel slag is increased, the mineralization rate of the steel slag is increased, green low-carbon cement can be prepared after the prepared steel slag is mixed with cured cement, the performance of the cement is better, the problems of discharge and recycling of wastes such as the steel slag, wastewater and waste gas are solved, waste discharge is reduced, and energy conservation and environmental protection are facilitated.
本发明公开了一种钢渣‑废水捕集矿化转炉烟气CO2的系统和方法，包括如下步骤：步骤(1)：将钢渣破碎并研磨制成＜150μm的钢渣微粉；步骤(2)：将钢渣微粉和钢厂废水同时置于混料设备中进行Ca2+浸出反应；步骤(3)：将浸出Ca2+的混合钢渣料浆输送至矿化反应器，同时通入转炉烟气进行气‑液‑固三相矿化反应；步骤(4)：将反应结束后的矿化料浆固液分离得到矿化钢渣。本申请相较两相矿化反应增强了钢渣固碳率，提升钢渣的矿化率，制备得到的钢渣与熟化水泥混合后能够制备得到绿色低碳水泥，且水泥的性能更优，解决了钢渣、废水和废气等废物的排放和循环再利用问题，减少废物排放，有利于节能环保。
System and method for capturing and mineralizing converter flue gas CO2 through steel slag-wastewater
The invention discloses a system and a method for capturing and mineralizing CO2 in converter flue gas by steel slag-wastewater. The method comprises the following steps: step (1), crushing steel slag and grinding into steel slag micro powder with the particle size of less than 150 microns; (2) the steel slag micro powder and the steel mill wastewater are simultaneously placed in mixing equipment for a Ca < 2 + > leaching reaction; (3) conveying the mixed steel slag slurry from which Ca < 2 + > is leached to a mineralization reactor, and meanwhile, introducing converter flue gas to carry out gas-liquid-solid three-phase mineralization reaction; and (4) carrying out solid-liquid separation on the mineralized slurry after the reaction is finished to obtain mineralized steel slag. Compared with a two-phase mineralization reaction, the method has the advantages that the carbon sequestration rate of the steel slag is increased, the mineralization rate of the steel slag is increased, green low-carbon cement can be prepared after the prepared steel slag is mixed with cured cement, the performance of the cement is better, the problems of discharge and recycling of wastes such as the steel slag, wastewater and waste gas are solved, waste discharge is reduced, and energy conservation and environmental protection are facilitated.
本发明公开了一种钢渣‑废水捕集矿化转炉烟气CO2的系统和方法，包括如下步骤：步骤(1)：将钢渣破碎并研磨制成＜150μm的钢渣微粉；步骤(2)：将钢渣微粉和钢厂废水同时置于混料设备中进行Ca2+浸出反应；步骤(3)：将浸出Ca2+的混合钢渣料浆输送至矿化反应器，同时通入转炉烟气进行气‑液‑固三相矿化反应；步骤(4)：将反应结束后的矿化料浆固液分离得到矿化钢渣。本申请相较两相矿化反应增强了钢渣固碳率，提升钢渣的矿化率，制备得到的钢渣与熟化水泥混合后能够制备得到绿色低碳水泥，且水泥的性能更优，解决了钢渣、废水和废气等废物的排放和循环再利用问题，减少废物排放，有利于节能环保。
System and method for capturing and mineralizing converter flue gas CO2 through steel slag-wastewater
一种钢渣-废水捕集矿化转炉烟气CO2的系统和方法
WANG BO (Autor:in) / HU SHILEI (Autor:in) / LI NA (Autor:in) / YANG HUAN (Autor:in) / LIANG QUANXUN (Autor:in) / DENG YI (Autor:in) / ZHUANG YUANFA (Autor:in)
22.11.2024
Patent
Elektronische Ressource
Chinesisch
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