小型流化床实验台上镍基载氧体的积炭特性

化工进展

小型流化床实验台上镍基载氧体的积炭特性

张号1，金晶1，刘帅2，路遥1，张传美1，蒋杰1

1上海理工大学能源与动力工程学院，上海 200093；2中国船舶重工集团公司第七一一研究所，上海 201100

出版日期:2013-01-05 发布日期:2013-01-25

Investigation on the carbon deposition of Ni-based oxygen carriers in a small-scale fluidized bed

ZHANG Hao1，JIN Jing1，LIU Shuai2，LU Yao1，ZHANG Chuanmei1，JIANG Jie1

1University of Shanghai for Science and Technology, School of Energy and Power Engineering, Shanghai 200093，China；2 Shanghai Marine Diesel Engine Research Institute, Shanghai 201100，China

Online:2013-01-05 Published:2013-01-25

摘要/Abstract

摘要： 采用小型流化床反应器，研究了Ni基载氧体在不同还原气氛（CH4、CO+H2）和不同反应温度（650 ℃、750 ℃、850 ℃、950 ℃）下的反应特性。结果表明：Ni基载氧体在两种气氛下均表现出较高的反应活性，CO+H2气氛下的还原反应比CH4气氛下的还原反应更完全，两个还原过程中均有积炭的产生，CH4气氛下的积炭比CO+H2气氛下的积炭更为严重；在CH4气氛下，温度的升高有利于Ni基载氧体还原反应的进行，同时还原过程中产生的积炭量也随着温度的升高有所增加，但当温度升高到850 ℃后，温度的增加对还原反应的影响不大。另外，相比于Cu基载氧体，Ni基载氧体虽然有更好的反应活性，但在还原过程中更容易产生积炭。

关键词: 小型流化床, Ni基载氧体, 积炭特性

Abstract: A small-scale fluidized bed was used to study the reactivity of Ni-based oxygen carriers under the reducing conditions (CH4 and CO+H2) at different reaction temperatures (650 ℃,750 ℃,850 ℃,950 ℃). The results reveal that nickel-based oxygen carriers have a high reactivity in both CH4 and CO+H2 atmospheres, and the reaction is more complete under the atmosphere of CO+H2. Furthermore, carbon deposition is found in both reduction processes, but it is more serious in CH4 atmosphere. In addition, the increase of temperature has a great influence on the reactivity of nickel-based oxygen carriers as well as the degree of carbon deposition, but it has less effect on the reduction reaction when the temperature exceeds 850 ℃. Also, nickel-based oxygen carriers have a better reactivity compared with copper-based oxygen carriers, but it is easier to produce carbon deposition during the reduction process.

Key words: small-scale fluidized bed, Ni-based oxygen carriers, carbon deposition characteristic

张号1，金晶1，刘帅2，路遥1，张传美1，蒋杰1. 小型流化床实验台上镍基载氧体的积炭特性[J]. 化工进展.

ZHANG Hao1，JIN Jing1，LIU Shuai2，LU Yao1，ZHANG Chuanmei1，JIANG Jie1. Investigation on the carbon deposition of Ni-based oxygen carriers in a small-scale fluidized bed[J]. Chemical Industry and Engineering Progree.