CAJ | 학술논문

为了有效地捕集焦炉气及煤层气中的甲烷，提出了一种新型捕集技术：吸收-吸附组合方法，该方法通过把ZIF-8分散到乙二醇水溶液中形成悬浮浆液，实现对甲烷组分的捕集。首先测定了甲烷、氮气和氢气在浆液中的吸收-吸附容量，得出吸着量大小的顺序为CH4＞N2＞H2，然后对CH4/H2和CH4/N2的混合气进行吸着平衡研究，发现浆液均能有选择性地吸着甲烷。对浆液中回收的ZIF-8材料进行XRD表征，分析证明在整个吸着过程中ZIF-8结构没有发生变化并且ZIF-8/乙二醇-水浆液能重复利用。
위료유효지포집초로기급매층기중적갑완，제출료일충신형포집기술：흡수-흡부조합방법，해방법통과파ZIF-8분산도을이순수용액중형성현부장액，실현대갑완조분적포집。수선측정료갑완、담기화경기재장액중적흡수-흡부용량，득출흡착량대소적순서위CH4＞N2＞H2，연후대CH4/H2화CH4/N2적혼합기진행흡착평형연구，발현장액균능유선택성지흡착갑완。대장액중회수적ZIF-8재료진행XRD표정，분석증명재정개흡착과정중ZIF-8결구몰유발생변화병차ZIF-8/을이순-수장액능중복이용。
In order to capture methane effectively from coke oven gas and coalbed methane, this paper proposes a new capture technology: absorption-adsorption combined method to capture methane by suspending ZIF-8 (zeolitic imidazolate framework-8) in a glycol-water solution. Firstly, the absorption-adsorption capacities of methane, nitrogen and hydrogen in the slurry were measured. The order of adsorption capacities were CH4>N2>H2. Then the ability of separationof the slurry forthe mixtures of CH4/H2 and CH4/N2were investigated. It was found that the mixtures can be separated effectively. The recovered ZIF-8 from the slurry was analyzed using XRD, and the results demonstrated that ZIF-8 did not change throughout the separation process and ZIF-8/glycol-water slurry can be reused.