Flow characteristics in a chemical-looping-combustion tower reactor

被引：0

作者：

Zhu X. ^{[1
]}

Shen L. ^{[1
]}

Shen T. ^{[1
]}

Yan J. ^{[1
]}

机构：

[1] Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2021年 / 40卷 / 08期

关键词：

Bubble tower; Chemical looping combustion; Fluidized bed; Gas-solid flow; Pressure measurement; Reactor;

D O I：

10.16085/j.issn.1000-6613.2020-2030

中图分类号：

学科分类号：

摘要：

Chemical looping technology is now limited by its insufficient fuel conversion and inefficient carbon capture. To solve such critical issues, a novel chemical-looping combustion (CLC) system for tower bubbling fluidized bed was designed. The whole loop system consisted of a tower fuel reactor (FR), an air reactor (AR), two loop-seals (LS), two cyclone separators, two risers and two down-comers. In cold model studies, methods of pressure measurement and outlet gas detection were applied to investigate the flow characteristics under different fluidization numbers, including pressure distribution, gas-solid distribution, solid circulation rate, and gas leakage. The results showed that the pressure balance in the system was guaranteed by the loop-seals. The FR fluidization number should be controlled between 3.5-4.0, which could guarantee a good gas-solid distribution in the FR, and lower the pressure loss between baffles. The solid circulation rate in the system was proportional to the pressure drop in the riser with a maximum of 0.013kg/s, and was mainly influenced by the fluidization number in reactors. The gas leakage from loop-seals to reactors was around 4%-8%, but there was no gas leakage between the FR and AR, which provided a good experimental basis for the design and operation of the thermal CLC system. © 2021, Chemical Industry Press Co., Ltd. All right reserved.

引用

页码：4144 / 4151

页数：7

共 29 条

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