scholarly journals Innovative approach of low carbon and efficient utilization of coal resources: The polygeneration system of a combination of the gasified coal gas and the pyrolyzed coal gas to form the synthetic gas

2010 ◽  
Vol 4 (4) ◽  
pp. 383-384
Author(s):  
Kechang Xie ◽  
Fan Li
Keyword(s):  
Innovative Approach ◽  
Low Carbon ◽  
Efficient Utilization ◽  
Coal Resources ◽  
Coal Gas ◽  
Synthetic Gas ◽  
Polygeneration System

scholarly journals Study on Efficient Utilization Technology of Coal Pillar Based on Gob-Side Entry Driving in a Coal Mine with Great Depth and High Production

2019 ◽  
Vol 11 (6) ◽  
pp. 1706 ◽  
Author(s):  
Xinyue Li ◽  
Nong Zhang ◽  
Zhengzheng Xie ◽  
Dongxu Liang ◽  
Yiming Zhao
Keyword(s):  
Renewable Resources ◽  
Coal Pillar ◽  
Great Depth ◽  
Efficient Utilization ◽  
Key Technology ◽  
Coal Resources ◽  
High Production ◽  
Efficient Recovery ◽  
Pillar Size

Improving the utilization of non-renewable resources takes a crucial position in circular economy. Gob-side entry driving technology has been widely applied in coal mines in China, such as in the Shilawusu mine (Ordos City, Inner Mongolia), here considered as a case study due to its high safety and resource-recovery rate. However, at present the complexity of coal pillar utilization makes it hard to fully master the key technology for coal pillar size design, which leads to huge waste of coal resources. Based on theoretical calculation and numerical simulation, this study analyzed the basic mechanical structure of coal pillar and the characteristics of its weakening failure, providing theoretical reference for efficient recovery of coal resources. In general, results of this study can be helpful in pursuing the efficient, hence sustainable, development of mines with Gob-side entry driving technology.

scholarly journals German energy transition (Energiewende) and what politicians can learn for environmental and climate policy

2020 ◽  
Author(s):  
Rudolf Rechsteiner
Keyword(s):  
Nuclear Energy ◽  
Energy Transition ◽  
Price Policy ◽  
Economic Approach ◽  
Low Carbon ◽  
Core Concept ◽  
Power Sector ◽  
Coal Gas ◽  
Market Participants ◽  
Damage Costs

Abstract The German Energiewende (energy transition) started with price guarantees for avoidance activities and later turned to premiums and tenders. Dynamic efficiency was a core concept of this environmental policy. Out of multiple technologies wind and solar power—which were considered too expensive at the time—turned out to be cheaper than the use of oil, coal, gas or nuclear energy for power generation, even without considering externalities. The German minimum price policy opened doors in a competitive way, creating millions of new generators and increasing the number of market participants in the power sector. The fact that these new generators are distributed, non-synchronous and weather-dependent has caused contentious discussions and specific challenges. This paper discusses these aspects in detail and outlines its impacts. It also describes Swiss regulations that successfully launched avoidance technologies or services and asks why exactly Pigou's neoclassical economic approach to the internalization of damage costs (externalities) has rarely worked in policy reality, while sector-specific innovations based on small surcharges have been more successful. Based on the model of feed-in tariffs, a concept for the introduction of low-carbon air traffic is briefly outlined. Graphic Abstract

Analysis and Optimization of Material Flow and Energy Flow in the Coking-Steel Co-Production System

2012 ◽  
Vol 524-527 ◽  
pp. 1980-1988
Author(s):  
Hong Fu Li ◽  
Shuo Yun Liu ◽  
Li Hua Zhao ◽  
Hao Bai ◽  
Da Qiang Cang ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Production System ◽  
Material Flow ◽  
Energy Flow ◽  
Waste Heat ◽  
Coal Resources ◽  
Coal Gas ◽  
Efficiency Increase ◽  
Novel Model ◽  
Coking Industry

In this paper, material and energy flow in the coking process were analyzed and thus the possibility of resource and energy efficiency increase was pointed out. Considering the unreasonable structure of coking industry currently, a novel model of coking-steel co-production system was built and its advantages were analyzed in the respects of the use of coal gas, waste heat and coal resources. The results show that the coking-steel co-production system has the more obvious advantages than the traditional coking process.

scholarly journals The Resources of Oil-rich Coals in China

2021 ◽  
Author(s):  
Shuzheng Ning ◽  
Li Zhang ◽  
XinQian Shu ◽  
JianQiang Zhang ◽  
Zhuo Zou ◽  
...  
Keyword(s):  
Mining Area ◽  
Low Rank ◽  
Shaanxi Province ◽  
Volatile Content ◽  
Low Rank Coal ◽  
Coal Resources ◽  
Coal Gas ◽  
Development And Utilization ◽  
Resource Characteristics ◽  
Coal Reserves

Abstract The resource characteristics of coal-rich, oil-deficient, and low-gas have determined the need to fully exploit the advantages of coal resources in China. China holds a large amount of low-rank coal with high volatile content and high tar yield. Based on the abundant oil-rich and low-rank coal resources, resource evaluation and research on its development and utilization are of great significance to the coal geology. According to the estimated reserves, the low-rank coal reserves are about 63.86 billion tons. Among the low-rank coals, the tar yield is greater than 7%, which is called oil-rich coal. Gas and semi-coke resources, which can greatly increase the application value of this type of coal resources. The oil-rich coal resources are widely distributed in the Carboniferous-Permian, Triassic, Jurassic, Cretaceous, and Neogene in China. They are mainly distributed in the three provinces of Inner Mongolia, Shaanxi, Xinjiang, and also Qinghai and Gansu in space. The Carboniferous-Permian oil-rich coal is mainly distributed in Shaanxi Fugu mining area, and the Triassic oil-rich coal is mainly distributed in the Zichang mining area of Shaanxi Province. It shows that the oil-rich coals are mainly lignite and long-flame coal with low metamorphism but also contains a small amount of gas coal and gas-fat coal. The tar yield and volatile content generally have a positive correlation. It has great significance to further study on the oil-rich coal resources.

Energy quality factor and exergy destruction processes analysis for a proposed polygeneration system coproducing semicoke, coal gas, tar and power

2017 ◽  
Vol 149 ◽  
pp. 52-60 ◽  
Author(s):  
Xuye Jing ◽  
Zhiping Zhu ◽  
Pengfei Dong ◽  
Guangjun Meng ◽  
Kun Wang ◽  
...  
Keyword(s):  
Quality Factor ◽  
Exergy Destruction ◽  
Coal Gas ◽  
Polygeneration System

A polygeneration system for methanol and power production based on coke oven gas and coal gas with CO 2 recovery

Energy ◽  
2014 ◽  
Vol 74 ◽  
pp. 174-180 ◽  
Author(s):  
Hu Lin ◽  
Hongguang Jin ◽  
Lin Gao ◽  
Na Zhang
Keyword(s):  
Coke Oven ◽  
Power Production ◽  
Coke Oven Gas ◽  
Coal Gas ◽  
Polygeneration System

scholarly journals Regime Resistance against Low-Carbon Transitions: Introducing Politics and Power into the Multi-Level Perspective

2014 ◽  
Vol 31 (5) ◽  
pp. 21-40 ◽  
Author(s):  
Frank W Geels
Keyword(s):  
Fossil Fuel ◽  
Low Carbon ◽  
Green Innovation ◽  
Coal Gas ◽  
Electricity System ◽  
Power And Resistance ◽  
Multi Level ◽  
Incumbent Regime ◽  
The Uk ◽  
Research And Policy

While most studies of low-carbon transitions focus on green niche-innovations, this paper shifts attention to the resistance by incumbent regime actors to fundamental change. Drawing on insights from political economy, the paper introduces politics and power into the multi-level perspective. Instrumental, discursive, material and institutional forms of power and resistance are distinguished and illustrated with examples from the UK electricity system. The paper concludes that the resistance and resilience of coal, gas and nuclear production regimes currently negates the benefits from increasing renewables deployment. It further suggests that policymakers and many transition-scholars have too high hopes that ‘green’ innovation will be sufficient to bring about low-carbon transitions. Future agendas in research and policy should therefore pay much more attention to the destabilization and decline of existing fossil fuel regimes.

External Conditions Analysis of Coal Comprehensive Utilization Based on Low Carbon Economy

2012 ◽  
Vol 524-527 ◽  
pp. 3626-3630
Author(s):  
Mei Feng Zhu ◽  
Guo Hao Zhao
Keyword(s):  
Industrial Structure ◽  
Coal Industry ◽  
Consumption Pattern ◽  
Low Carbon ◽  
The Sustainable Development ◽  
Coal Resources ◽  
Low Carbon Economy ◽  
Comprehensive Utilization ◽  
External Conditions ◽  
Carbon Economy

The low carbon economy is the basic way to realize the sustainable development. At present, the comprehensive utilization of coal resources is the important content to promote the low carbon economy development. This paper analyzes the external conditions of coal resources comprehensive utilization. First, the economy development needs a large quantity of coal in China, and the coal-dominant energy consumption pattern will not change in the short term. Second, there is a certain delay in adjusting the industrial structure. Third, the sunk cost is higher in the transformation of coal industry. The paper believes that comprehensive utilization of coal resources is the important segment to promote the development of China's low carbon economy under the restriction of the objective conditions.

scholarly journals Synthetic gas networks for the statistical assessment of low-carbon distribution systems

2021 ◽  
Author(s):  
Enrico Vaccariello ◽  
Riccardo Trinchero ◽  
Pierluigi Leone ◽  
Igor S. Stievano
Keyword(s):  
Distribution Systems ◽  
Information Gain ◽  
Network Models ◽  
Structural Features ◽  
Low Carbon ◽  
Gas Networks ◽  
Energy Networks ◽  
Hydraulic Behaviour ◽  
Synthetic Gas ◽  
Low Carbon Energy

Most of the simulation studies on energy networks, including gas grids, derive their results from a limited number of network models. The findings of these works are therefore affected by a substantial case-specificity, which partially limits their validity and prevents their generalisation. To overcome this limitation, the present work proposes a novel statistical-based approach for studying distribution gas networks, enabled by a generator of random gas grids with accurate technical designs and structural features. Ten-thousand random and unique networks are produced in three different tests, where increasingly tight constraints are applied to the synthetisation process for a higher control over the generated grids. The experiments verify the accuracy of the tool and highlight that substantial variations can be found in the hydraulic behaviour (pressures and gas velocities) and structural properties (pipe diameters and network volumes) of real-world gas networks. The observed 10,000 gas grids evidence the information gain offered by statistical-based approaches with respect to traditional case-specific studies. The tool opens a broad range of applications which include, but are not limited to, statistical analyses on the distributed injection of alternative gases, like hydrogen, in integrated, low-carbon, energy systems.

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