CH_4、CO_2与O_2制合成气的研究 Ⅱ工艺条件的影响

Study of catalytic oxidation and reforming of CH_4, CO_2 and O_2 to syngas over a Ni base catalyst

在固定床反应器中考察了１２％Ｎｉ－５％ＲＥ－２％Ｃｕ－２％Ｌｉ／Ａｌ２Ｏ３（ｍａｓｓ）催化剂在ＣＨ４、ＣＯ２与Ｏ２催化氧化重整制合成气反应中催化剂粒径、工艺操作条件（空速与温度）及原料气配比对反应的影响，确定了较佳的操作条件：催化剂粒径２０～４０目，反应最佳温度为８００℃，ＳＶ＝４×１０４ｍｌ／（ｇ·ｈ）。同时看到在不同的原料气配比的条件下该催化剂的活性亦很稳定，不仅达到了反应平衡，且产物Ｖ（ＣＯ）／Ｖ（Ｈ２）比有很强的调变性。

An investigation is carried out on effects of catalyst particle size, reaction conditions such as space velocity and temperature, and feedstock composition on catalytic oxidation and reforming of CH 4, CO 2 and O 2 to syngas over a 12% Ni 5% RE 2% Cu 2% Li/Al 2O 3 catalyst. The result shows that the suitable particle size of the catalyst is 20～40 mesh, and the optimal condition is at 800℃ with a SV =4×10 4 ml/(g.h) at atmosphere. It is also found that the catalyst has good and stable activity at different feed compositions, and the products CO/H 2 can be easily adjusted between 0.5～1.0 according to different needs.