【摘要】 提出了采用CaO与稻壳灰的水合产物作为新型CO₂吸收剂。研究表明,当水合时间为8h、水合温度为75℃和Si/Ca摩尔比为1.0时,CaO/稻壳灰吸收剂能获得最佳循环碳酸化转化率;经过20次循环反应碳酸化转化率可达0.44,比相同反应条件下CaO/H₂O吸收剂的转化率提高了42%,是原CaO转化率的2倍。650～700℃时有利于CaO/稻壳灰的碳酸化反应;在高煅烧温度下比CaO/H₂O和CaO具有更好的抗烧结能力。更多还原

【Abstract】 The mixture of hydration product of CaO and rice husk ash was proposed as a novel CO₂ sorbent.The cyclic carbonation test results show that when hydration time is 8 h,hydration temperature is 75℃,and mole ratio of CaO to rice husk ash is 1.0,CaO/rice husk ash sorbent achieves the optimum cyclic carbonation conversion which remains 0.44 after 20 cycles.It is higher than that of CaO/H₂O by 42%at the same reaction conditions,and is twice as high as that of CaO.Temperature range of 650～700℃is beneficial to carbonation reaction of CaO/rice husk ash.The novel sorbent exhibits better anti-sintering behavior than CaO/H₂O or CaO.更多还原