Emission Reduction and Energy Performance Improvement with Different Regional Treatment Intensity in China

Teng, Xiangyu; Lu, Danting; Chiu, Yung‐ho

doi:10.3390/en12020237

Cited by 6 publications

(2 citation statements)

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“…Li and Lin 24 divided 30 provinces into three groups to measure China's energy efficiency performance, indicating that the eastern region has achieved the highest progress inefficiency relative to the meta-frontier, followed by the western and the central regions. Teng et al 25 divided 30 Chinese provinces into key and non-key regions and argued that increasing emission treatment expenditures, which can help reduce emissions, is an effective method to improve energy performance.…”

Section: Introductionmentioning

confidence: 99%

The impact of China's financial expenditure on energy and carbon emission efficiency: Applying a meta-dynamic non-radial directional distance function

Xie

Teng

Liu

et al. 2021

Energy & Environment

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China is the world's largest energy consumer and carbon emitter, but despite unbalanced growth among the eastern, central, and western regions, local financial expenditure on energy conservation and environmental protection has increased from 255.1 billion yuan in 2011 to 582.5 billion yuan in 2018. This research thus introduces financial expenditure like a new input into a dynamic meta-frontier non-radial directional distance function to evaluate China's energy and carbon emission efficiency over that period of time. Different from previous studies, after considering financial expenditure we find that most provinces have narrowed their gap with the benchmark frontier, reflecting that increasing financial expenditure does help improve energy and carbon emission efficiency. The results highlight that most provinces should increase their financial expenditure on energy conservation and environmental protection, especially in the central and western regions, so as to narrow their technology gap with the eastern region.

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Section: Introductionmentioning

confidence: 99%

The impact of China's financial expenditure on energy and carbon emission efficiency: Applying a meta-dynamic non-radial directional distance function

Xie

Teng

Liu

et al. 2021

Energy & Environment

Self Cite

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“…More than 38% of electric energy generated globally is based on coal [4,5]. Low costs of coal mining combined with high reserves of the raw material make it an attractive source of energy in emerging markets, such as India or China [6]. The total energy consumption in China was 3.164 million TCE (ton of standard carbon equivalent) in 2018 [7]; this was approximately 54% of the energy consumption in Asia and nearly one-fourth of the global consumption of energy [8].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Modifiers and Method of Application on Fine-Coal Combustion

Tic

Guziałowska-Tic

2019

Energies

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This research work presents the results of studies on the effect of modifiers comprising the salts CuSO 4 ·2H 2 O, NaCl, NH 4 Cl, MgSO 4 ·7H 2 O, CaCl 2 , and urea at various concentrations on the combustion of fine coal. The tests were carried out in a 12-kW laboratory boiler equipped with a rotary-grate retort furnace. The emission levels and concentrations of CO, CO 2 , SO 2 , NO x , and TOC in the flue gas were measured using analyzers. A modifier composed of 350 ppm Cu, Na, Mg, NH 4 + , Ca, and urea showed particularly high activity in the combustion of fine coal. The flue-gas levels of CO, NO x , and SO 2 were reduced by approximately 9%, 12%, and 10%, respectively, in comparison with the modifier-free sample. In this case, the boiler efficiency also increased from 65% in the tests with no modifier to 76% in the tests with the modifier. The proprietary application system, enabling the modifier to be added in exact amounts to the variable flow of fine coal, is also described. It was found that the use of the modifier in coal combustion tests results in lower emissions of harmful fuel components, a higher amount of heat obtained from the fuel unit mass, lower corrosive impact of the fuels, lower boiler maintenance costs, and extended service life.Energies 2019, 12, 4572 2 of 15In Poland, even as much as 80% of electric energy is still based on coal, including brown coal [10]. Looking at the latest investments in the power engineering industry in Poland, such as new power units in power plants, as well as the national energy policy, it seems that coal will continue to be the essential raw material in the generation of electric energy in Poland [10,11].The growing mechanization of coal mining leads to an increased efficiency of the production of fine coal (grain size 0-20 mm). Small coal has a high content of sulfur; therefore, its direct combustion is a serious source of environmental pollution. Reasonable utilization of fine coal is important for sustained development in power engineering [12].Direct coal combustion is a commonly used technology in the production of electric and thermal energy. There are essentially two coal combustion techniques: Bed combustion and suspension combustion. According to the former technique, coal is fed onto a fire grate and the combustion type depends on the directions of flow of the fuel and of the air. This type of combustion takes place in a stoker. The latter type, taking place in a fluidized bed, is a process in which suitably prepared solid particles are suspended in a uniformly distributed upward flow of the fluid. These are high efficiency devices, capable of attaining heating capacities as high as 135 tons of steam per hour [13].Stoker furnaces are the oldest and the most commonly used devices for industrial coal bed combustion. In these devices, crushed coal (typically, 95% particles below 32 mm and 20% to 60% below 6 mm) is fed onto the stoker where primary air flows upward through the coal bed. The crushed coal pieces are heated, dried, degassed, and combusted, lea...

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Environmental policy innovation in China and examining its dynamic relations with air pollution and economic growth using SEM panel data

Azimi

Feng

Zhou

2020

Environ Sci Pollut Res

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Emission Reduction and Energy Performance Improvement with Different Regional Treatment Intensity in China

Cited by 6 publications

References 58 publications

The impact of China's financial expenditure on energy and carbon emission efficiency: Applying a meta-dynamic non-radial directional distance function

The impact of China's financial expenditure on energy and carbon emission efficiency: Applying a meta-dynamic non-radial directional distance function

The Effect of Modifiers and Method of Application on Fine-Coal Combustion

Environmental policy innovation in China and examining its dynamic relations with air pollution and economic growth using SEM panel data

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