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首页> 外文期刊>Israel journal of chemistry >CO2 Reduction to Substitute Natural Gas: Toward a Global Low Carbon Energy System
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CO2 Reduction to Substitute Natural Gas: Toward a Global Low Carbon Energy System

机译：减少二氧化碳替代天然气:走向全球低碳能源体系

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摘要

Methane has proven to be an outstanding energy carrier and is the main component of natural gas and substitute natural gas (SNG). SNG may be synthesized from the CO2 and hydrogen available from various sources and may be introduced into the existing infrastructure used by the natural gas sector for transport and distribution to power plants, industry, and households. Renewable SNG may be generated when H2 is produced from renewable energy sources, such as solar, wind, and hydro. In parallel, the use of CO2-containing feed streams from fossil origin or preferably, from biomass, permits the avoidance of CO2 emissions. In particular, the biomass-to-SNG conversion, combined with the use of renewable H2 obtained by electrolysis, appears a promising way to reduce CO2 emissions con- siderably, while avoiding energy intensive CO2 separation from the bio feed streams. The existing technologies for the production of SNG are described in this short review, along with the need for renewed research and development efforts to improve the energy efficiency of the renewables-to-SNG conversion chain. Innovative technologies aiming at a more efficient management of the heat delivered in the exothermic methanation process are therefore highly desirable. The production of renewable SNG through the Sabatier process is a key process to the transition towards a global sustainable energy system, and is complementary to other renewable energy carriers such as methanol, dimethyl ether, formic acid, and Fischer-Tropsch fuels.
机译：甲烷已经被证明是一位杰出的能量载体,是天然气的主要成分和替代天然气)。合成的二氧化碳和氢气从不同的来源和可能引入现有的基础设施使用的自然天然气行业的运输和分配电厂、工业和家庭。生产合成天然气可能时生成氢气可再生能源,如太阳能、风能、和水电。饲料流从化石产地或最好,从生物量、许可避免二氧化碳排放。转换,结合使用可再生H2通过电解,出现一个有前途的方法减少二氧化碳排放con - siderably,避免能源密集型二氧化碳的分离生物饲料来源。生产合成天然气在这短描述审查,以及需要重新研究和发展努力提高能源renewables-to-SNG转换的效率链。热量传递的高效管理因此,放热甲烷化过程非常可取的。通过Sabatier过程是一个关键过程对全球可持续发展的过渡能源系统,是其他的补充可再生能源运营商如甲醇,二甲醚,甲酸,费燃料。

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