本文選題：載硫活性炭　切入點(diǎn)：天然氣　出處：《中國環(huán)境科學(xué)》2016年02期

【摘要】：在固定床反應(yīng)裝置上考察了商業(yè)載硫活性炭脫除天然氣中氣態(tài)Hg0的吸附性能、影響因素、再生方法以及吸附動(dòng)力學(xué),同時(shí)結(jié)合BET,FTIR,XRD等表征手段提出載硫活性炭脫汞機(jī)理.結(jié)果表明,空速對脫汞效率限制作用有限,空速從12000h-1提高至48000h-1,脫除率變化范圍在7%以內(nèi).增加汞濃度在初始階段可以提高其脫汞率,增加單位質(zhì)量活性炭對汞的吸附量,提高溫度會(huì)增加吸附體系內(nèi)的活化分子,提高脫汞率,溫度在80℃時(shí)效果最優(yōu),但是溫度過高則會(huì)產(chǎn)生負(fù)面效應(yīng).不同階段的動(dòng)力學(xué)擬合結(jié)果表明化學(xué)吸附是整個(gè)吸附過程的控制步驟.熱脫附實(shí)驗(yàn)表明載硫活性炭的脫汞溫度是在300~450℃,再生后對汞的吸附能力減弱,其原因可歸為再生過程中碳硫鍵的損失和活性炭二次碳化時(shí)表面的燒蝕.
[Abstract]:The adsorption properties, influencing factors, regeneration methods and adsorption kinetics of gaseous Hg0 from natural gas by commercial activated carbon loaded with sulfur were investigated in a fixed-bed reactor. At the same time, the mechanism of mercury removal from activated carbon supported on sulfur was proposed by means of FTIR XRD. The results showed that space velocity had limited effect on the efficiency of mercury removal. The space velocity is increased from 12000h-1 to 48000h-1, and the removal rate is within 7%. Increasing mercury concentration in the initial stage can increase the mercury removal rate, increase the amount of mercury adsorption per unit mass of activated carbon, and increase the temperature to increase the activated molecules in the adsorption system. When the temperature is 80 鈩，

本文編號(hào)：1682883