Gasification of a typical low-rank coal in 65MWth KEDA® circulating fluidized-bed gasifier

Ruyi Shao; Yuanyuan Shao; Jesse Zhu; Min Peng

doi:10.1016/j.joei.2023.101176

Gasification of a typical low-rank coal in 65MW_th KEDA® circulating fluidized-bed gasifier

Ruyi Shao, Yuanyuan Shao, Jesse Zhu, Min Peng

CBI Green Chemicals and Energy Centre

Research output: Journal Publication › Article › peer-review

Abstract

The KEDA® circulating fluidized-bed (KEDA®CFB) gasifier is a high-temperature air-blown circulating fluidized bed developed by KEDA (ANHUI) Clean Energy Co., Ltd to produce clean industrial gas. This project describes the design and the initial operating results of using low-rank coal to produce industrial fuel gas in a 65MW_th KEDA®CFB industrial-scale plant with a feeding rate of 13 ton/hr. The gasification process was carried out at an ambient pressure and temperatures at 980 ± 10 °C. A long-term stable operation was achieved for more than 20 days. Cold gas efficiency could reach 73% with a gas high heating value of 5.89MJ/Nm³ at a steam-to-coal ratio of 0.38 and an equivalence ratio of 0.3. During the stable operation, it was also observed that the operational bed temperature has to be kept under the residual ash fusion temperatures (AFTs) to avoid aggregation and defluidization.

Original language	English
Article number	101176
Journal	Journal of the Energy Institute
Volume	107
DOIs	https://doi.org/10.1016/j.joei.2023.101176
Publication status	Published - Apr 2023

Keywords

Gasification performance
Industrial scale
KEDA®CFB
Low ash fusion temperatures

ASJC Scopus subject areas

Control and Systems Engineering
Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.joei.2023.101176

Cite this

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title = "Gasification of a typical low-rank coal in 65MWth KEDA{\textregistered} circulating fluidized-bed gasifier",

abstract = "The KEDA{\textregistered} circulating fluidized-bed (KEDA{\textregistered}CFB) gasifier is a high-temperature air-blown circulating fluidized bed developed by KEDA (ANHUI) Clean Energy Co., Ltd to produce clean industrial gas. This project describes the design and the initial operating results of using low-rank coal to produce industrial fuel gas in a 65MWth KEDA{\textregistered}CFB industrial-scale plant with a feeding rate of 13 ton/hr. The gasification process was carried out at an ambient pressure and temperatures at 980 ± 10 °C. A long-term stable operation was achieved for more than 20 days. Cold gas efficiency could reach 73% with a gas high heating value of 5.89MJ/Nm3 at a steam-to-coal ratio of 0.38 and an equivalence ratio of 0.3. During the stable operation, it was also observed that the operational bed temperature has to be kept under the residual ash fusion temperatures (AFTs) to avoid aggregation and defluidization.",

keywords = "Gasification performance, Industrial scale, KEDA{\textregistered}CFB, Low ash fusion temperatures",

author = "Ruyi Shao and Yuanyuan Shao and Jesse Zhu and Min Peng",

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year = "2023",

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doi = "10.1016/j.joei.2023.101176",

language = "English",

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AU - Shao, Ruyi

AU - Shao, Yuanyuan

AU - Zhu, Jesse

AU - Peng, Min

PY - 2023/4

Y1 - 2023/4

N2 - The KEDA® circulating fluidized-bed (KEDA®CFB) gasifier is a high-temperature air-blown circulating fluidized bed developed by KEDA (ANHUI) Clean Energy Co., Ltd to produce clean industrial gas. This project describes the design and the initial operating results of using low-rank coal to produce industrial fuel gas in a 65MWth KEDA®CFB industrial-scale plant with a feeding rate of 13 ton/hr. The gasification process was carried out at an ambient pressure and temperatures at 980 ± 10 °C. A long-term stable operation was achieved for more than 20 days. Cold gas efficiency could reach 73% with a gas high heating value of 5.89MJ/Nm3 at a steam-to-coal ratio of 0.38 and an equivalence ratio of 0.3. During the stable operation, it was also observed that the operational bed temperature has to be kept under the residual ash fusion temperatures (AFTs) to avoid aggregation and defluidization.

AB - The KEDA® circulating fluidized-bed (KEDA®CFB) gasifier is a high-temperature air-blown circulating fluidized bed developed by KEDA (ANHUI) Clean Energy Co., Ltd to produce clean industrial gas. This project describes the design and the initial operating results of using low-rank coal to produce industrial fuel gas in a 65MWth KEDA®CFB industrial-scale plant with a feeding rate of 13 ton/hr. The gasification process was carried out at an ambient pressure and temperatures at 980 ± 10 °C. A long-term stable operation was achieved for more than 20 days. Cold gas efficiency could reach 73% with a gas high heating value of 5.89MJ/Nm3 at a steam-to-coal ratio of 0.38 and an equivalence ratio of 0.3. During the stable operation, it was also observed that the operational bed temperature has to be kept under the residual ash fusion temperatures (AFTs) to avoid aggregation and defluidization.

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