CAJ | 학술논문

利用自制的能实现等温下热重测量的装置，针对石灰石循环吸收 CO2工艺，研究了烟气中水蒸气对石灰石循环煅烧/碳酸化特性的影响规律。结果表明，煅烧阶段水蒸气的存在会降低吸收剂活性，而碳酸化过程中水蒸气则会大幅度提高碳酸化转化率，如，在20%水蒸气下，第8次转化率为29.43%，而无水时仅为19.46%。当煅烧及碳酸化阶段均含有20%水蒸气时，衰减趋势和转化率与仅碳酸化过程含有水蒸气类似，但呈现的规律不是仅煅烧或仅碳酸化阶段存在水蒸气时效果的简单相加。在本实验条件及实验温度范围内，考虑水蒸气的影响，900~950℃煅烧、700℃碳酸化是针对实验用石灰石的较佳反应温度。
이용자제적능실현등온하열중측량적장치，침대석회석순배흡수 CO2공예，연구료연기중수증기대석회석순배단소/탄산화특성적영향규률。결과표명，단소계단수증기적존재회강저흡수제활성，이탄산화과정중수증기칙회대폭도제고탄산화전화솔，여，재20%수증기하，제8차전화솔위29.43%，이무수시부위19.46%。당단소급탄산화계단균함유20%수증기시，쇠감추세화전화솔여부탄산화과정함유수증기유사，단정현적규률불시부단소혹부탄산화계단존재수증기시효과적간단상가。재본실험조건급실험온도범위내，고필수증기적영향，900~950℃단소、700℃탄산화시침대실험용석회석적교가반응온도。
By means of a customized thermogravimetric analysis system that can measure the weight change of samples at constant temperature, the influence of steam on the limestone calcination/carbonation cyclic reactions were studied. Results show that steam reduces the sorbent activity during calcination, while it greatly increases carbonation conversion ratio during the carbonation (for instance, the ratio at the eighth cycle is 29.43% with 20% steam, but only 19.46% without steam). The carbonation ratios of sorbents are very similar whenever both calcination and carbonation contain 20% steam or only 20% steam present in carbonation stage. But, the effect is not added together of the results of two stage separately-steam only in calcination and only in carbonation. Taking steam into consideration, calcinations at 900~950 ℃ and carbonation at 700 ℃ is the optimum reaction temperature for the tested limestone.