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新型多喷嘴对置式水煤浆气化技术工业化应用 总被引:3,自引:0,他引:3
煤气化技术是实现煤炭洁净利用的关键。介绍了新型多喷嘴对置式水煤浆气化炉流场、煤气化机理及其工业化应用概况。通过工业化运行结果表明:该装置气化效率高,交叉流式洗涤冷却水分布器的水均布,气化炉运转平稳,负荷可调节范围大,洗涤、冷却性能好,该技术打破了国外对水煤浆气化技术的垄断。 相似文献
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多喷嘴对置式水煤浆气化技术及其优势 总被引:1,自引:0,他引:1
1 多喷嘴对置式水煤浆气化工艺的开发及应用情况简介 1.1 多喷嘴对置式水煤浆气化工艺开发情况 多喷嘴对置式新型水煤浆气化技术是由华东理工大学、兖矿鲁南化肥厂 (水煤浆气化及煤化工国家工程研究中心)、中国天辰化学工程公司共同承担的"九五"国家重点科技攻关项目,并已申请了国家专利. 相似文献
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多喷嘴对置水煤浆气化炉的开发与应用 总被引:1,自引:0,他引:1
介绍多喷嘴对置水煤浆气化炉的实验室研究及中试情况,并与Texaco水煤浆气化技术进行了比较,结果表明,多喷嘴对置气化技术优于Texaco技术。 相似文献
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介绍了在PKM气化炉中弱粘结性双阳煤的试烧情况,并给出了主要工艺参数控制范围。试烧结果表明:依兰煤中配入50%双阳煤,汽氧比6.0:1时,气化炉工况良好。 相似文献
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详细介绍了Shell气化炉的主要组成(按工艺功能分):气化反应段、急冷段、输气管段、气体返回段、气体冷却段、辅助设备等,总结了气化炉的结构特点:结构复杂、控制点多、操作难度大、制粉系统故障率高等,并对气化炉的安装、操作维修进行了说明,以期对引进技术的消化吸收工作起指导作用。 相似文献
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关于Shell煤气化装置的投煤试车及载气切换 总被引:1,自引:0,他引:1
介绍了Shell粉煤气化装置投煤试车前的准备工作;分析了装置试运行期间的常见问题;从输送煤粉的载气由氮气切换为CO2以及炉温控制方面论述了气化炉工艺操作要点,提出了完善装置的建议。结果表明,投煤试车成功后,装置以90%负荷稳定运行,最高负荷达到97%,且有效气体产量稳定在8万m^3/h。 相似文献
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A numerical model based on the Eulerian–Eulerian two-fluid approach is used to simulate the gasification of coal char inside an entrained flow gasifier. In this model, effects of thermophoresis of coal char particles are thoroughly investigated. The thermophoresis is due to the gas temperature gradient caused by absorpted heat of coal char gasification. This work, firstly, calculates the gas temperature gradient and thermophoretic force at1100 °C,1200 °C,1300 °C and 1400 °C wall temperatures. Then, the changes of particle volume fraction and velocity in the gasifier are studied in the simulation with thermophoresis or not. The results indicate that considering the particle thermophoresis has some effects on the calculation of particle volume fraction in the gasifier, especially at wall temperature of 1400 °C, and the maximum particle volume fraction variance ratio reaches up to 1.38% on wall surface of the gasifier. These effects are mainly caused by large gas temperature gradient along the radial direction of the gasifier. For the particle velocity, the changes are small but can be observable along radial direction of the gasifier, which has good agreement with the distributions of radial gas temperature gradient and thermophoretic force. These changes above may have certain effects on gasification reaction rates in this Eulerian model. So the change of gasification reaction rates in the simulation with thermophoresis or not is studied finally. 相似文献
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Duan Feng Bao-Sheng Jin Ya-Ji Huang Bin Li Yu Sun Yiming Wu Ming-Yao Zhang 《Korean Journal of Chemical Engineering》2010,27(6):1707-1714
High temperature preheated air and steam as gasifying agent and coal gasification was performed in a pressurized turbulent
circulating fluidized bed (CFB) gasification pilot plant to investigate the pressurized gasification process and estimate
its potential. Within the scope of this paper this test facility as well as its operation behavior was described. Furthermore,
the parameter pressure has been investigated regarding its influence on the syngas composition and was presented and discussed
in the following. The results show that the gasification quality is improved at higher pressure because of the better fluidization
in the reactor. Coal gasification at a higher pressure shows advantages in lower heat value and carbon conversion. With the
gasifier pressure increased from 0.1MPa to 0.3MPa, the gas heating value is increased by 15%. Increasing the gasifier pressure
would increase the carbon conversion from 57.52% to 76.76%. Also, the dry gas yield and efficiency of cold gas increase little
with the increase of the gasifier pressure. The operating parameter of pressure exists at optimum operating range for this
specific CFB coal gasification process. 相似文献
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煤气化过程的模型和模拟与优化操作 总被引:5,自引:2,他引:5
介绍了煤气化过程的模型和煤气化过程采用机理模型的理由,固定床煤气化过程机理模型的建立以及模拟计算的结果,并探讨了固定床水煤气化炉和流化床水煤气炉制气过程优化操作参数的确定。开发的数学模型已用于制气炉的模拟计算,与实测数据比较符合,由气化过程的数学模拟气化过程不同条件下各种参数的变化规律,进而可得出气化过程的优化操作条件,其确定过程比试验法安全,省时,省料。 相似文献
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介绍福建本地型煤的特点及型煤间歇气化存在的问题。通过富氧气化攻关,证明福建本地型煤采用富氧气化比间歇气化更具优势,富氧气化可有效解决劣质煤的气化问题。经实际运行证实:富氧气化本地型煤具有炉况相对稳定、产气量大、煤耗低、炉渣残碳含量低等优点,但也存在炉上温度高、煤气中CO2含量高等问题,有待进一步解决。 相似文献
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针对制约壳牌煤气化装置长周期高负荷运行的主要因素---煤质问题,开展了壳牌煤气化装置的配煤研究。依据以本地煤为主、外地煤为辅的配煤原则进行了多煤种的复配试验,得到了适合壳牌气化炉运行的配煤方案,从而解决了因煤质问题导致气化炉积灰或垮渣等问题,实现了壳牌煤气化装置的长周期、高负荷运行。 相似文献