介绍了汽油 -液化石油气 (L PG)两用燃料发动机空燃比的调节和作者研制成功的无混合器式双蒸发器 L PG供气系统。该供气系统取消了 L PG发动机惯用的混合器 ,在原机双腔化油器的主、副腔喉管处钻孔 ,接入 L PG主供气系和 L PG加浓系 ,...介绍了汽油 -液化石油气 (L PG)两用燃料发动机空燃比的调节和作者研制成功的无混合器式双蒸发器 L PG供气系统。该供气系统取消了 L PG发动机惯用的混合器 ,在原机双腔化油器的主、副腔喉管处钻孔 ,接入 L PG主供气系和 L PG加浓系 ,从而取消了混合器 ,解决了全负荷时动力性与部分负荷时燃料经济性、排放之间的矛盾 ,取得了良好的效果。用该系统改装的汽油 - L PG两用燃料发动机 ,在燃用汽油时性能无任何变化 ,燃用 L PG时取得了动力性、燃料经济性和排放指标俱佳的效果。展开更多
Synthesis of liquefied petroleum gas (LPG) from synthesis gas using hybrid catalyst consisting of methanol synthesis catalyst and USY or ZSM-5 was investigated in a fixed bed reactor. The composition of the hybrid cat...Synthesis of liquefied petroleum gas (LPG) from synthesis gas using hybrid catalyst consisting of methanol synthesis catalyst and USY or ZSM-5 was investigated in a fixed bed reactor. The composition of the hybrid catalyst had great effect on the activity and selectivity of the catalyst. The effect of reaction temperature (260℃～360℃),GHSV(1500h^-1～9000h^-1)were investigated. The results showed that the best reaction temperature of bifunctional catalyst which consisted of MeLi and ZSM-5 zeolite is 325℃, and the CO conversion achieved 72.28%. The hybrid catalyst, which consisted of ZSM-5 zeolite and methanol synthesis catalyst, demonstrated a highly activity for the formation of light hydrocarbon and the selectivity for C3 and C4 hydrocarbons was 23.90% and 19.06% respectively.展开更多
文摘介绍了汽油 -液化石油气 (L PG)两用燃料发动机空燃比的调节和作者研制成功的无混合器式双蒸发器 L PG供气系统。该供气系统取消了 L PG发动机惯用的混合器 ,在原机双腔化油器的主、副腔喉管处钻孔 ,接入 L PG主供气系和 L PG加浓系 ,从而取消了混合器 ,解决了全负荷时动力性与部分负荷时燃料经济性、排放之间的矛盾 ,取得了良好的效果。用该系统改装的汽油 - L PG两用燃料发动机 ,在燃用汽油时性能无任何变化 ,燃用 L PG时取得了动力性、燃料经济性和排放指标俱佳的效果。
文摘Synthesis of liquefied petroleum gas (LPG) from synthesis gas using hybrid catalyst consisting of methanol synthesis catalyst and USY or ZSM-5 was investigated in a fixed bed reactor. The composition of the hybrid catalyst had great effect on the activity and selectivity of the catalyst. The effect of reaction temperature (260℃～360℃),GHSV(1500h^-1～9000h^-1)were investigated. The results showed that the best reaction temperature of bifunctional catalyst which consisted of MeLi and ZSM-5 zeolite is 325℃, and the CO conversion achieved 72.28%. The hybrid catalyst, which consisted of ZSM-5 zeolite and methanol synthesis catalyst, demonstrated a highly activity for the formation of light hydrocarbon and the selectivity for C3 and C4 hydrocarbons was 23.90% and 19.06% respectively.
