排序方式: 共有20条查询结果,搜索用时 15 毫秒
1.
The gaseous products of co-pyrolysis of waste tires and biomass under DC arc plasma condition were investigated. The results showed that the volumetric concentration of acetylene in carbon-containing gases obtained when waste tires, biomass and coal were separately pyrolyzed was 14.6%, 13.7% and 10.6% respectively when the parameters experimental run were 150 A of electric current, 310 V of voltage, 2.0 m^3 · h^-1 of flux of argon, 0.65 m^3 · h^-1 of flux of main hydrogen, 0.4 m^3 ·h^-1 of flux of auxiliary hydrogen and 5.0 × 10^-4 kg · s^-1 of feed rate. Under the same condition, the volumetric concentration of acetylene in carbon-containing gases produced from the mixtures of biomass and waste tires when the mass ratio of biomass and waste tire was 1/2 increased obviously, nearly 2--3 times that of tires or biomass pyrolyzed separately. The concentration of acetylene was closely related to the volatile matter and the amount of oxygen. In addition, the possible mechanism of the pyrolysis occurred under plasma condition was proposed. 相似文献
2.
3.
4.
利用油气生成的地质历史过程中温度-时间补偿效应,运用“慢速升温+长时间恒温”的方法,采用热重分析法和改进的封闭系统热解装置,在热解终温范围350℃~550℃,升温速率5K/min,恒温时间24h等比较温和的反应条件下,研究了不同变质程度的神木煤、东山煤和阳城煤的热解过程,并运用傅立叶变换红外光谱(FTIR)、X-射线衍射(XRD)、元素分析等现代仪器分析技术研究了不同温度下热解所得到的系列化固态产物.研究结果表明:采用改进的热解装里能得到较好的模拟热解实验结果,至少在上述实验条件下可以得到很好的结果;煤样的元素组成、物理和化学特性、所含官能团种类和数量等不同,使得在相同条件下所发生反应不同,尤其是高变质程度的阳城无烟煤与其它煤差异更大.所以,固态产物的组成特性和随热解温度的变化规律不同;相对高阶煤而言,选用中等变质程度的烟煤可以得到更好的模拟效果. 相似文献
5.
6.
7.
8.
石灰石在煤的水蒸气气化过程中固疏作用的研究 总被引:3,自引:3,他引:0
本文通过EMPA,SEM对四种石灰石在煤气化(水蒸气+N2)过程中固硫能力的对比,系统研究了石灰石组成,结构,分解温度及Ca/S比,添加物对石灰石固流特性的影响,结果表明:石灰石分解温度是所研究煤气化过程中影响石灰石固硫量的主要因素;石灰石粒度为180-200目时,Ca/S比在1.0-1.5范围内固硫效果最好。 相似文献
9.
研究了CaCO_3对煤气化过程中所产生的H_2S等硫化物的吸收作用,着重探讨了石灰石的种类、Ca/S比及粒度大小对固硫作用的影响,初步确定了合适的固硫吸收剂及适当的操作条件。 相似文献
10.