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A platform for research: civil engineering, architecture and urbanism
Method for in-situ regeneration of SCR (Selective Catalytic Reduction) denitration catalyst by coupling with cement production process
The invention discloses a method for in-situ regeneration of an SCR (Selective Catalytic Reduction) denitration catalyst by coupling with a cement production process, which comprises the following steps: 1) firstly, carrying out short circuit on a reactor in a cement production process system; (2) carrying out air cleaning on the catalyst bed layer by using compressed air; 3) performing water spraying cleaning on the catalyst bed layer through high-pressure water spraying; 4) blowing in compressed air again to remove excessive moisture; and 5) introducing hot air, and calcining the catalyst bed layer in a heat exchange form to realize regeneration. The method can be used for regenerating the catalyst in high-temperature SCR and medium-low-temperature SCR in a cement production process, the service time of the catalyst is prolonged, and the denitration activity of the catalyst is recovered; the catalyst regeneration is coupled with the cement production process, so that the transportation cost and the heating cost generated by disassembling and transporting the catalyst back to a manufacturer for regeneration are avoided, the energy consumption can be saved to the maximum extent, the original process is not influenced, the generated wastewater and waste gas can be treated by the cement production process, and additional treatment equipment and investment are not increased.
本发明公开了一种与水泥生产工艺耦合进行SCR脱硝催化剂原位再生的方法，如下步骤：1)首先，在水泥生产工艺系统中对反应器进行短路；2)使用压缩空气对催化剂床层进行空气清洗；3)通过高压喷水对催化剂床层进行喷水清洗；4)再次鼓入压缩空气，去除多余水分；5)引入热风，通过换热形式对催化剂床层进行煅烧，实现再生。本发明可用于水泥生产工艺高温SCR、中低温SCR中催化剂的再生，延长了催化剂使用时间，恢复催化剂脱硝活性；将催化剂再生与水泥生产工艺耦合，避免将催化剂拆卸运回厂家进行再生产生的运输费用和加热费用，可最大限度节约能耗，不影响原工艺，产生的废水废气均可被水泥生产工艺处置，不增加额外处理设备和投资。
Method for in-situ regeneration of SCR (Selective Catalytic Reduction) denitration catalyst by coupling with cement production process
The invention discloses a method for in-situ regeneration of an SCR (Selective Catalytic Reduction) denitration catalyst by coupling with a cement production process, which comprises the following steps: 1) firstly, carrying out short circuit on a reactor in a cement production process system; (2) carrying out air cleaning on the catalyst bed layer by using compressed air; 3) performing water spraying cleaning on the catalyst bed layer through high-pressure water spraying; 4) blowing in compressed air again to remove excessive moisture; and 5) introducing hot air, and calcining the catalyst bed layer in a heat exchange form to realize regeneration. The method can be used for regenerating the catalyst in high-temperature SCR and medium-low-temperature SCR in a cement production process, the service time of the catalyst is prolonged, and the denitration activity of the catalyst is recovered; the catalyst regeneration is coupled with the cement production process, so that the transportation cost and the heating cost generated by disassembling and transporting the catalyst back to a manufacturer for regeneration are avoided, the energy consumption can be saved to the maximum extent, the original process is not influenced, the generated wastewater and waste gas can be treated by the cement production process, and additional treatment equipment and investment are not increased.
本发明公开了一种与水泥生产工艺耦合进行SCR脱硝催化剂原位再生的方法，如下步骤：1)首先，在水泥生产工艺系统中对反应器进行短路；2)使用压缩空气对催化剂床层进行空气清洗；3)通过高压喷水对催化剂床层进行喷水清洗；4)再次鼓入压缩空气，去除多余水分；5)引入热风，通过换热形式对催化剂床层进行煅烧，实现再生。本发明可用于水泥生产工艺高温SCR、中低温SCR中催化剂的再生，延长了催化剂使用时间，恢复催化剂脱硝活性；将催化剂再生与水泥生产工艺耦合，避免将催化剂拆卸运回厂家进行再生产生的运输费用和加热费用，可最大限度节约能耗，不影响原工艺，产生的废水废气均可被水泥生产工艺处置，不增加额外处理设备和投资。
Method for in-situ regeneration of SCR (Selective Catalytic Reduction) denitration catalyst by coupling with cement production process
一种与水泥生产工艺耦合进行SCR脱硝催化剂原位再生的方法
ZHAO LIN (author) / ZHOU WEI (author) / WANG YONGGANG (author) / CHENG ZHAOHUAN (author) / PENG XUEPING (author) / NIE WENHAI (author)
2022-08-09
Patent
Electronic Resource
Chinese
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