For CO 2 hydrogenation, ethylene showed negligible impact on CO 2 conversion, CO selectivity, or CH 4 selectivity but primarily served as a feedstock for the
Abstract The following sections are included: Coal to Olefins – Current Technology Coke and Town Gas Coke Ovens and Gas Retorts Indirect Conversion of Coal to Olefins Coal
In light of the significance and challenges towards the study and application of coal and coal derivatives in emerging renewable and clean energy, this review provides an overview of some
To reduce the dependence of olefin production on the limited petroleum, considerable efforts have been made in synthesizing olefins from alternative energy resources. Here, we evaluate the techno-economic feasibility of coal-to-olefin technology based on Fischer-Tropsch synthesis.
In this work, the third-generation Grubbs catalyst (G-III), which is efficient for olefin metathesis reactions, has been adopted as a homogeneous catalyst for Li–CO 2
Four coal-to-olefins technology scenarios are compared for nine indicators. Secondary technological progress largely increases environmental benefits. Coupling
This research extended the previous design of biomass gasification-based methanol synthesis to an efficient biomass-to-olefins (BTO) system for saving fossil fuel, reducing CO 2 emission, and improving the sustainability of light olefins production. The BTO system was modeled using
Battery material innovator X-Batt has partnered with Consol Innovations, an offshoot of Consol Energy (NASDAQ: CEIX), to fast-track their coal-based anode technology.
Taking advantage of coalbed methane as a substitute for coal fuel can facilitate CO 2 reduction in addition to CO 2 sequestration. Here, the CO 2 reduction potential and economic impact of CO
Producing 1 t olefins requires about 4.1 t coal, accompanying 5.79 t CO 2 emissions. The value is 7.1 times that of the OTO process. China's 12th five-year plan clearly promised that a carbon trading market would be gradually established and CO 2 emissions intensity would be reduced correspondingly.
Four coal-to-olefins technology scenarios are compared for nine indicators. Secondary technological progress largely increases environmental benefits. Coupling renewables greatly mitigates carbon emissions and resource scarcity. Coupling renewables rebounds energy use and offsets technological progress.
It was found that the coal-based olefins process show prominent advantage in product cost because of the low price of its feedstock. However, it suffers from the limitations of higher capital investment, lower energy efficiency, and higher emissions.
The sensitivity analysis highlights the significant influence of olefin and feedstock coal prices on the economic benefits. This implies the need to seek a market that can maximize olefin prices and minimize feedstock coal prices.
It is seen that producing 1 t olefins from coal requires about 30 t fresh water. The water consumption of the CTO process is 4.2 times that of the OTO process. China's coal mines locate at a few water-limited provinces, such as Shanxi, Inner Mongolia, and Xinjiang. However, most of coal-based chemical processes are water-intensive .
In order to reduce oil consumption, coal is considered as a natural alternative feedstock for olefins production. For coal-rich countries, especially China, developing coal-based olefins industry is regarded as of great important to sustainable development of chemical processing industry as well as national economy.
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