Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Oxy-fuel combustion carbon capture cement kiln system and method for preparing cement clinker
The invention discloses an oxy-fuel combustion carbon capture cement kiln system and a method for preparing cement clinker, comprising a first raw material preheating and predecomposition system, a second raw material preheating and predecomposition system and a flue gas capture and purification system, air outlets of the second row of cyclone preheaters are respectively communicated with a circulating flue gas inlet of the pre-combustion furnace and a flue gas inlet of the flue gas capturing and purifying system, and part of flue gas of the flue gas capturing and purifying system is communicated with an air outlet pipe of the second decomposing furnace through a branch pipe; the purity of the high-purity oxygen is 75-85%, the CO2 dry basis concentration in the flue gas discharged by the second raw material preheating and pre-decomposing system is 75-85%, and the CO2 dry basis concentration in the flue gas entering the air outlet pipe of the second decomposing furnace by the flue gas capturing and purifying system is 95-99%. According to the invention, the purity of high-purity oxygen and the temperature of the flue gas at the outlet of the second decomposing furnace are reduced, so that the dry basis concentration of CO2 in the flue gas of the second raw material preheating and pre-decomposing system is further improved, the heat exchange efficiency of the raw materials and the concentration of CO2 in the subsequently captured and purified flue gas are improved, and the purposes of saving energy and reducing consumption are achieved.
本发明公开了一种全氧燃烧碳捕集的水泥窑系统及制备水泥熟料的方法，包括第一生料预热预分解系统、第二生料预热预分解系统和烟气捕集提纯系统，第二列旋风预热器出风口分别与预燃烧炉循环烟气进口、烟气捕集提纯系统烟气进口连通，烟气捕集提纯系统部分烟气通过支管与第二分解炉出风管连通；高纯度氧气纯度75～85％，第二生料预热预分解系统排出烟气中CO2干基浓度75～85％，烟气捕集提纯系统进第二分解炉出风管烟气中CO2干基浓度95～99％。本发明降低了高纯度氧气纯度和第二分解炉出口烟气温度，使第二生料预热预分解系统烟气中CO2干基浓度进一步提高，提高了生料换热效率及后续捕集提纯烟气中CO2浓度，达到了节能降耗。
Oxy-fuel combustion carbon capture cement kiln system and method for preparing cement clinker
The invention discloses an oxy-fuel combustion carbon capture cement kiln system and a method for preparing cement clinker, comprising a first raw material preheating and predecomposition system, a second raw material preheating and predecomposition system and a flue gas capture and purification system, air outlets of the second row of cyclone preheaters are respectively communicated with a circulating flue gas inlet of the pre-combustion furnace and a flue gas inlet of the flue gas capturing and purifying system, and part of flue gas of the flue gas capturing and purifying system is communicated with an air outlet pipe of the second decomposing furnace through a branch pipe; the purity of the high-purity oxygen is 75-85%, the CO2 dry basis concentration in the flue gas discharged by the second raw material preheating and pre-decomposing system is 75-85%, and the CO2 dry basis concentration in the flue gas entering the air outlet pipe of the second decomposing furnace by the flue gas capturing and purifying system is 95-99%. According to the invention, the purity of high-purity oxygen and the temperature of the flue gas at the outlet of the second decomposing furnace are reduced, so that the dry basis concentration of CO2 in the flue gas of the second raw material preheating and pre-decomposing system is further improved, the heat exchange efficiency of the raw materials and the concentration of CO2 in the subsequently captured and purified flue gas are improved, and the purposes of saving energy and reducing consumption are achieved.
本发明公开了一种全氧燃烧碳捕集的水泥窑系统及制备水泥熟料的方法，包括第一生料预热预分解系统、第二生料预热预分解系统和烟气捕集提纯系统，第二列旋风预热器出风口分别与预燃烧炉循环烟气进口、烟气捕集提纯系统烟气进口连通，烟气捕集提纯系统部分烟气通过支管与第二分解炉出风管连通；高纯度氧气纯度75～85％，第二生料预热预分解系统排出烟气中CO2干基浓度75～85％，烟气捕集提纯系统进第二分解炉出风管烟气中CO2干基浓度95～99％。本发明降低了高纯度氧气纯度和第二分解炉出口烟气温度，使第二生料预热预分解系统烟气中CO2干基浓度进一步提高，提高了生料换热效率及后续捕集提纯烟气中CO2浓度，达到了节能降耗。
Oxy-fuel combustion carbon capture cement kiln system and method for preparing cement clinker
一种全氧燃烧碳捕集的水泥窑系统及制备水泥熟料的方法
PENG XUEPING (Autor:in) / DAI ZHONGYUAN (Autor:in) / CHEN CHANGHUA (Autor:in) / KIM JU-JUNG (Autor:in) / WAN FUWEI (Autor:in)
20.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
F27B
Industrieöfen, Schachtöfen, Brennöfen, Retorten allgemein
,
FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
/
C04B
Kalk
,
LIME
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
CEMENT KILN SYSTEM AND METHOD FOR PREPARING CEMENT CLINKER
| Europäisches Patentamt | 2022
Cement kiln system and method for preparing cement clinker
| Europäisches Patentamt | 2023
CEMENT PRE-CALCINER KILN SYSTEM AND METHOD FOR PREPARING CEMENT CLINKER
| Europäisches Patentamt | 2021
Cement clinker and method for preparing cement from cement clinker
| Europäisches Patentamt | 2022