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针对废铁渣载氧体,在小型固定床反应器上进行了燃煤加压化学链燃烧试验以及载氧体持续循环能力的研究,结果表明,压力增加抑制了煤的初始热解过程,提高了煤焦的气化过程以及气化产物与载氧体之间的反应。随着压力增加,CO_2浓度和燃料的转化率增加,CO和CH_4的浓度降低,载氧体的转化率也随压力的增加而增加。由于载氧体载氧能力一定,随燃料与载氧体质量比增加,CO_2浓度和燃料的转化率降低,不利于CO_2捕集和能源的高效利用。循环试验表明,随循环次数增加,载氧体活性逐渐增强,热解气体和煤焦气化产物的转化率以及燃料的转化率均得到提高。
Aiming at the scrap iron carrier oxygen, the experiments of pressurized coal combustion and the continuous circulation of oxygen carrier were carried out in a small fixed bed reactor. The results show that the pressure increase restrains the initial pyrolysis process of coal and increases The gasification process of char as well as the reaction between the gasification product and the oxygen carrier. With the increase of pressure, CO 2 concentration and fuel conversion rate increased, the concentration of CO and CH 4 decreased, and the conversion rate of oxygen carrier also increased with the increase of pressure. Due to the oxygen carrying capability of the oxygen carrier is certain, as the mass ratio of fuel to oxygen carrier increases, the CO 2 concentration and fuel conversion rate decrease, which is not conducive to CO 2 capture and efficient use of energy. Cyclic tests show that the oxygen carrier activity gradually increases with the increase of the number of cycles, and the conversion of pyrolysis gas and char gasification products and the conversion of fuels are all improved.