CAJ | 학술논문

采用天然石灰石做脱硫剂,在固定床上进行硫化氢高温脱除的试验研究,考察了脱硫剂粒径、反应温度、气速及高温煤气中H_2对石灰石脱硫性能的影响,同时还用热晕分析(TG)、扫描电镜(SEM)、X-射线衍射(XRD)等测试手段对脱硫剂的物相组成和结构等进行了表征.结果表明,脱硫剂的粒径对脱硫效果的影响很大,0.38～0.83 mm的石灰石脱硫效果最佳;温度对脱硫效果的影响比较复杂,最佳的操作温度为850℃;气速对脱硫效果的影响较明显,脱硫剂的穿透时间随气速的减小而加长;H_2对脱硫过程起阻碍作用,气速越小,这种阻碍作用越明显.
채용천연석회석주탈류제,재고정상상진행류화경고온탈제적시험연구,고찰료탈류제립경、반응온도、기속급고온매기중H_2대석회석탈류성능적영향,동시환용열훈분석(TG)、소묘전경(SEM)、X-사선연사(XRD)등측시수단대탈류제적물상조성화결구등진행료표정.결과표명,탈류제적립경대탈류효과적영향흔대,0.38～0.83 mm적석회석탈류효과최가;온도대탈류효과적영향비교복잡,최가적조작온도위850℃;기속대탈류효과적영향교명현,탈류제적천투시간수기속적감소이가장;H_2대탈류과정기조애작용,기속월소,저충조애작용월명현.
Natural limestone was adopted as a high-temperature desulfurization sorbent. Tests for removal of H_2S with limestone at high temperatures were carried out in a fixed bed reactor. The effects of reaction temperature, gas velocity, particle size and H_2 in hot gas on the desulfurization performance were tested. The structure and composition were also studied by thermogravimetry (TG) , scanning electron microscopy (SEM) and X-ray diffraction (XRD). It is showed that the particle size has a great influence on desulfurization performance. The limestone of 0. 38～0. 83 mm has the best desulfurization effect; the temperature has a complicated influence on desulfurization performance, the desulfurization sorbent has the best desulfurization effect at 850 ℃ ; gas velocity also has a distinct influence on desulfurization performance, desulfurization breakthrough time becomes longer as the gas velocity decreases; H_2 can inhibit the desulfurization process, it is more obvious as the gas velocity decreases.