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在固 体床流动 反应装置 上考察 了 Ｎｉ／ γ Ａｌ２ Ｏ３ 催化 甲烷 部分 氧化 制合 成 气反 应过 程 中的积炭问 题． 结 果表明 ：反应床 层温度升 高，积炭 量降 低；温 度降 低，积 炭量 增加， 当温 度在 ６００ ℃附近时，积 炭量增 加很快． 积炭产 生位于 催化剂床 层出口段 ． 随 着压力的 增加，催 化剂 积炭 量增 加很快． 当空速超 过一定 值时，随 着空速的 增加，催 化剂积 炭量 减少 ，说明 积炭 产生 过 程受 动力 学 影响很大． 根据反 应体系 的热力学 分析与 各种反应 条件对催 化剂积 炭的影响 得出甲 烷部分催 化氧化制合成气 反应体 系中的积 炭主要是 由 Ｃ Ｏ 歧 化和 Ｃ Ｏ＋ Ｈ２ 还 原反应 产生，而不 是 Ｃ Ｈ４ 的裂解 ．
In the solid bed flow reactor, the carbon deposition in the reaction of partial oxidation of methane to syngas was investigated in the presence of Ni / γ-Al2 O3. The results show that the temperature of the reaction bed increases and the coke deposition decreases, while the temperature decreases and the coke deposition increases. When the temperature is around 600 ℃, the carbon deposition increases rapidly. Coke production occurs at the outlet of the catalyst bed. As the pressure increases, the amount of catalyst coke increases rapidly. When the airspeed exceeds a certain value, with the increase of airspeed, the amount of catalyst coke deposition decreases, indicating that the coke production process is strongly influenced by the kinetics. According to the thermodynamic analysis of the reaction system and the influence of various reaction conditions on the catalyst carbon deposition, it was found that the carbon deposition in the reaction system of partial catalytic oxidation of methane to syngas is mainly caused by C O disproportionation and C O + H2 reduction reaction instead of C H 4 Cleavage.