电力科技与环保
電力科技與環保
전력과기여배보
ELECTRIC POWER ENVIRONMENTAL PROTECTION
2015年
3期
4-8
,共5页
锰氧化物%汞污染控制%吸附性能%可再生汞吸附剂%汞的脱附
錳氧化物%汞汙染控製%吸附性能%可再生汞吸附劑%汞的脫附
맹양화물%홍오염공제%흡부성능%가재생홍흡부제%홍적탈부
manganese oxides%flue gas mercury pol ution control%absorbong capacity%regenerable mercury sor-bent%mercury desorption
以不同锰盐为锰源制备了三种锰氧化物，并将其作为吸附剂用于模拟烟气中零价汞的脱除。采用PXRD、TEM、N2吸附、H2－TPR、XPS等技术手段对制备的吸附剂进行了表征，利用固定床装置考察了其在不同温度下对模拟烟气中零价汞的吸附能力，并对穿透后吸附剂的脱附性能进行试验探讨。结果表明不同锰源制备的锰氧化物在低温条件下对零价汞的吸附性能不同，其中以硝酸锰为锰源制备的锰氧化物具有较高的吸附性能，并且吸附在锰氧化物表面的汞能够在加热条件下释放出来。另外，试验还发现当烟气中无SO2时，制备的吸附剂具有较好的循环使用性能。
以不同錳鹽為錳源製備瞭三種錳氧化物，併將其作為吸附劑用于模擬煙氣中零價汞的脫除。採用PXRD、TEM、N2吸附、H2－TPR、XPS等技術手段對製備的吸附劑進行瞭錶徵，利用固定床裝置攷察瞭其在不同溫度下對模擬煙氣中零價汞的吸附能力，併對穿透後吸附劑的脫附性能進行試驗探討。結果錶明不同錳源製備的錳氧化物在低溫條件下對零價汞的吸附性能不同，其中以硝痠錳為錳源製備的錳氧化物具有較高的吸附性能，併且吸附在錳氧化物錶麵的汞能夠在加熱條件下釋放齣來。另外，試驗還髮現噹煙氣中無SO2時，製備的吸附劑具有較好的循環使用性能。
이불동맹염위맹원제비료삼충맹양화물，병장기작위흡부제용우모의연기중령개홍적탈제。채용PXRD、TEM、N2흡부、H2－TPR、XPS등기술수단대제비적흡부제진행료표정，이용고정상장치고찰료기재불동온도하대모의연기중령개홍적흡부능력，병대천투후흡부제적탈부성능진행시험탐토。결과표명불동맹원제비적맹양화물재저온조건하대령개홍적흡부성능불동，기중이초산맹위맹원제비적맹양화물구유교고적흡부성능，병차흡부재맹양화물표면적홍능구재가열조건하석방출래。령외，시험환발현당연기중무SO2시，제비적흡부제구유교호적순배사용성능。
A series of manganese oxides were prepared by using different manganese salts as manganese sources.The prepared manganese oxides were first characterized by powder X -ray diffraction ( PXRD ) , transmission electron microscopy ( TEM) , nitrogen adsorption, H2 temperature-programmed reduction ( H2 -TPR) and X-ray photoelectron spectrum( XPS) , and then employed as simulated flue gas mercury sorbent. Their capacities for absorbing elemental mercury from simulated flue gas were experimental y investigated.The results showed that manganese oxides prepared by di fferent manganese source had different mercury capacities at different temperature.Among them, sorbent made from manganese nitrate showed the highest mercury ca-pacity at lower temperature.Moreover, the adsorbed mercury could desorb from sorbent surface at higher tem-perature which showed the feasibility for preparing regenerable mercury sorbents.
