关键词: 天然气, 煤, 共气化, 合成气, 热态模拟

Abstract: A new process, natural gas & coal co-gasification for synthesis gas production,was developed by combining natural gas steam reforming and coal gasification process.The H₂/CO ratio of crude synthesis gas could be controlled in the range of 1.0—2.0. Using a moving bed as reactor, coke and coal as the raw materials in the preliminary study of hot simulative experiments, the effects of blowing parameters H₂O/CH₄/O₂ on the temperature in the flame zone and the H₂/CO ratio of synthesis gas were investigated.Natural gas and oxygen were blown into the reactor at the same position to keep the temperature of reactor above 1000 ℃ and the blowing parameters H₂O/CH₄/O₂ were adjusted to produce crude synthesis gas, in which the H₂/CO ratio varied to the range of 1.0—2.0, the contents of active compounds (H₂ and CO) were more than 90.0% and the residue methane was less than 2.0%.The concept of natural gas & coal co-gasification process is correct and feasible.

Key words: 天然气, 煤, 共气化, 合成气, 热态模拟