Synergistic utilization of coal and other energy – Key to low carbon economy

doi:10.1007/s11708-010-0136-4

Front Energ

0, Vol.

Issue () : 1-19 https://doi.org/10.1007/s11708-010-0136-4

FEATURE ARTICLE

Synergistic utilization of coal and other energy – Key to low carbon economy

Weidou NI(

), Zhen CHEN

State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

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Abstract

In China, coal is a dominant component of energy mix, and it is expected to remain as such over the next 30 to 40 years. Coal is expected to be used even more in power generation. The direct combustion of coal already has been causing severe pollution and ecological degradation, and it is quite difficult to address the need to reduce greenhouse gas (GHG) given the direct combustion of coal. Therefore, the polygeneration system based on coal gasification, which is one of the major examples of synergistic utilization of coal, is proposed. It is a comprehensive solution to meet the energy challenges China is facing. Furthermore, the synergy of fossil fuels (especially coal) with renewable energy, the synergy of different kinds of energy for energy storage, the synergy of centralized and distributed supply of different kinds of energy, and the synergy of different kinds of energy in smart energy grid (power, gas, heat, and water) are the keys to making China a low-carbon economy. Carbon dioxide (CO₂) mitigation in China should begin from the coal-chemical industry given their accumulated relevant experiences. The mitigation process should gradually be transformed into the “IGCC+ polygeneration+ CCUS”. The objectives of this paper are to describe the synergistic utilization of coal, and to analyze the synergy of coal with other energy resources, and to propose the scientific and technological problems to achieve these synergies.

Keywords synergy clean and efficient utilization of coal coal-based polygenration CO₂ mitigation energy storage

Corresponding Author(s): NI Weidou,Email:niwd@mail.tsinghua.edu.cn

Issue Date: 05 March 2011

Cite this article:

Weidou NI,Zhen CHEN. Synergistic utilization of coal and other energy – Key to low carbon economy[J]. Front Energ, 0, (): 1-19.

URL:

https://academic.hep.com.cn/fie/EN/10.1007/s11708-010-0136-4
https://academic.hep.com.cn/fie/EN/Y0/V/I/1

Fig.1 Renewable energy development trend in China

Fig.2 Nuclear power development forecast for China

Fig.3 Natural gas demand forecast for China

Fig.4 IEA - International Energy Agency; EIA - Energy Information Administration; CAE - Chinese Academy of Engineering; NEO - former National Energy Office
Oil demand forecast for China

Fig.5 Data source: Consulting Report of “China’s Medium- and Long-term Development Strategy Research” (from the Chinese Academy of Engineering, 2010)
Primary energy mix forecast

Fig.6 CO emission predictions

Tab.1 Generation costs with or without CO capture provided by some American research institutes

Fig.7 Block diagram of polygeneration system

Fig.8 Stand-alone systems of methanol production and wind power

Fig.9 Synergy system of methanol production with wind power

Tab.2 Material flows of different cases

Fig.10 Diagram of an adiabatic compressed air energy storage system

Fig.11 - diagram of integrated Brayton and Rankine cycles

Fig.12 Diagram of integrated cycle of Brayton with Rankine cycle

Fig.13 Centralized heat supply networks in cities with various heat sources

Fig.14 Power and natural gas consumption of Beijing in 2007

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