8#水煤浆气化炉停车安全联锁优化方案

通过对比第八套气化炉与前七套气化炉停车过程中工艺参数变化,发现8#气化炉停车过程中存在煤浆给料泵出口压力低于气化炉压力的现象,从多方面分析原因,最终通过优化8#气化炉停车安全联锁顺控,彻底解决高压煤浆泵出口压力低于气化炉压力的问题,保证气化炉停车安全。经过一年的开停车实践证明,8#气化炉停车安全联锁优化后比原设计更安全、更合理。     

四喷嘴气化炉液位异常探讨

四喷嘴气化炉在我厂试车和投产以来,随着气化炉负荷的提升,出现了加入的激冷水远大于合成气中饱和水蒸汽和气化炉排出黑水的总量,但气化炉的液位仍只能维持在低液位,随着负荷由低向高增加,气化炉液位急剧下降,致使气化炉整个系统难以操作,无法提高系统负荷,下面将以气化炉的水平衡的分析及传热机理探讨,对工艺工况进行优化,并提出改善措施。     

德士古气化炉投料失败原因分析

德士古气化炉投料成功与否,受诸多因素影响,如气化炉膛温度,煤浆浓度,氧煤比及煤浆、氧气阀门动作顺序正确与否等,其中气化炉的蓄热量（即气化炉炉膛温度）是一个关键因素。在气化炉投料过程中,出现了各种各样影响气化炉投料失败的原因,通过比较有针对意义的德士古气化炉开车投料过程进行了分析、总结。     

气化炉蒸汽控制保护系统

我公司采用壳牌煤气化装制,年产5×105t甲醇项目,在试生产中,一次偶然情况,造成气化炉超温,气化炉蒸汽产量迅速上升,因处理及时,未造成重大损失.基于此种情况,公司决定将气化炉的蒸汽产量引入气化炉保护系统中,当蒸汽产量达到危险值时,声光报警通知操作工,当蒸汽产量达到一个极限值时,引起ESD气化炉主联锁动作,迅速停掉四个煤烧嘴,有效保护气化炉.     

中天合创气化炉长周期运行实践与措施

结合GE水煤浆气化炉的特点,通过分析中天合创超过100 d运行周期的单台气化炉,总结气化炉长周期运行的经验,为延长气化炉运行周期找到优化的措施和思路。     

火焰光度原子吸收法测定气化炉炉渣中微量铬仪器工作条件及降低仪器故障率的研究

对气化炉炉砖冲蚀磨损情况进行监测和研判是提高气化炉运行周期的重要技术措施之一,而通过监测分析气化炉炉渣中的铬含量并结合气化炉的实际运行工况,可较为准确地研判炉砖的磨损情况.陕西长青能源化工有限公司采用火焰光度原子吸收法测定气化炉炉渣中微量铬时,总是会遇到分析灵敏度差、标准曲线线性相关性达不到试验要求、仪器使用过程中故障...     

粉煤气化炉反应室漏水及应对措施研究

介绍了壳牌粉煤加压气化炉中调和水冷却系统和水汽系统的工艺流程,结合壳牌粉煤加压气化炉的运行经验,分析DCS系统工艺指标变化,判定气化炉漏水的具体部位。从气化炉进料稳定性、炉温过高或过低、锅炉给水水质、烧嘴罩安装等方面分析了泄漏的原因,给出提高氧煤比来提高气化炉反应室炉温,降低系统水/汽系统与气化炉反应室压差减少泄漏量等保生产的应急措施。     

Shell气化炉恒力吊架系统调试

Shell气化炉装置中,为了保证气化炉温度变化时的伸缩,在合成气冷却器末端装有1组恒力吊架系统,以吸收气化炉及冷却器的热应力。恒力吊架系统在安装和试车期间需要几次定位调试,准确调试对保障气化炉的正常运行至关重要。以下就调试步骤及调试过程中应注意的问题进行介绍。     

浅谈原料煤灰分及灰熔点对水煤浆气化炉的影响

本文根据神华包头煤化工分公司德士古水煤浆气化炉在运行中由于原料煤质出现偏差,对气化炉运行造成的较大影响,简要介绍了气化原料煤质中灰分、灰熔点对气化炉安全运行的影响,并提出了相应的处理办法。     

基于IGCC两段式干煤粉加压气化炉温度测量元件的研究

气化炉温度,作为设备运行的重要控制参数,其测量准确性对工况的控制存在重要意义。气化炉内环境复杂,对温度元件材质要求极高,使用过程中经常出现严重磨损,元件损坏,影响测量,通过对气化炉内温度的长期研究。论述了气化炉炉温的合理选型方法。     

Experimental Study on a Hot‐Oxygen Burner in a Bench‐Scale Gasifier

The direct‐ignition technology of an entrained‐flow coal‐water slurry gasifier with hot‐oxygen burner (HOB) is presented. Experimental tests were carried out using diesel oil and coal‐water slurry in a bench‐scale entrained‐flow opposed multi‐burner (OMB) gasifier. Using a CCD camera equipped with high‐temperature endoscope, flame images inside the gasifier were recorded and subsequently processed. The results show that the HOB diesel flame is more stable than the normal two‐channel burner flame typically used. Entrained‐flow coal‐water slurry gasifiers can start up using the HOB directly without a higher preheated wall temperature. An HOB can potentially save gasifier preheating time and operation costs and enables a wide range of future applications.     

气化烧嘴冷却水泵回路改造及联锁优化

简介四喷嘴对置式气化炉烧嘴冷却水泵回路配置及联锁设置的情况,针对运行过程中出现的诸多问题,分析其原因,并采取了一系列优化、改造措施,由此保障了气化炉的长周期稳定运行。     

Shell粉煤气化装置运行分析

总结了Shell粉煤气化装置开车以来的运行情况、工艺技术管理、气化炉操作经验等。探讨了煤气化装置在运行中出现的问题,分析其原因,并提出具体的解决措施。Shell粉煤气化装置有待进一步解决的主要问题是总碳转化率达不到99.9%的设计要求,关键设备、阀门、管线的磨蚀和腐蚀等。     

多喷嘴对置式气化炉带水问题研究

本文结合多年的操作经验,对多喷嘴对置式气化炉带水现象的原因,以及气化炉带水对正常生产操作的影响进行了分析探讨,并提出了改进措施,为加强气化炉运行操作、促进和改善气化系统的安全、稳定、长周期运行提供参考。     

鲁奇加压气化炉的运行与技术改造

根据国内鲁奇炉的使用情况，总结了山西天脊煤化工集团公司１０年的运行经验和技术改造成果，提出了鲁奇炉在我国的发展方向。     

Experimental investigations of long stick wood gasification in a bottom lit updraft fixed bed gasifier

Based on the experience of the gasifier users on the efforts and energy for wood chip preparation in a typical gasifier, we have embarked on the development of a gasifier suitable to work with long stick woody biomass as the feed materials. In the context of the impact of gasifiers, as decentralized energy delivery devices such an approach, it is hoped, would be an attractive option in rural areas both in domestic and industrial sectors. In the present paper in the gasifier operation, there is a fixed quantity of char that is combusted to gasify a fixed amount of wood, and the gasifier does not operate in a steady state manner. In this present work, focus is made on the development of a gasifier using long sticks of wood as feed materials. With this concept, a 10 kW thermal output power gasifier is designed and constructed. The gas and airflows can be converted to the air/fuel ratio, the most important aspect of gasifier operation. The air/fuel ratio shows operation in a combustion mode at start up, a gasification mode for the middle part of the run and a charcoal gasification mode at the end of the run. Since the interest here is exploring and validating of this concept, a bottom lit updraft gasifier is designed mainly to look at the gas yield and other favourable factors and to use this gas so obtained for thermal applications. The rate of feed was between 9 and 10 kg/h and continuous operation for 5 h was made in a couple of runs to study the performance. In this paper we report the salient features of our efforts and results, yielding a gasifier efficiency of 73%.     

多喷嘴对置式水煤浆加压气化炉拱顶耐火砖蚀损机理及应对措施分析

分析了多喷嘴对置式水煤浆加压气化炉拱顶耐火砖蚀损的主要机理,即炉内流场分布规律决定了拱顶部位是耐火砖的薄弱环节,气化炉设计尺寸、对应操作压力、负荷、工艺喷嘴装配尺寸是主要影响因素.从设备、操作、管理等方面总结了避免拱顶耐火砖蚀损过快的应对措施.目前,拱顶耐火砖累计使用周期已超过8000h.     

煤气化发电与甲醇联产工程项目建设和运行总结

介绍了煤气化发电与甲醇联产系统空分、气化、净化、甲醇合成、燃气发电等的技术方案,讨论、分析了四喷嘴对置式新型水煤浆气化炉的性能与技术特点;并对气化炉在原始开车过程中出现的双炉拱顶超温现象进行了分析,通过调整烧嘴结构、优化操作,大大提升了拱顶耐火砖的使用寿命。运行稳定后,气化炉中合成气有效成分84.9%,碳转化率98%～99%,渣中可燃物5%～15%,吨甲醇耗煤1.35t,热电偶平均使用寿命≥2个月。     

GSP气化炉激冷水系统阀门的使用与技术改造

介绍了GSP气化炉激冷水系统流程和阀门使用情况,分析了阀门易磨损的原因,给出了具体的阀门改造方案:选用高硬度陶瓷材料和滑板阀结构。改造后,阀门使用时间由最初的不到3天延长到1年以上,有助于提高气化炉的稳定运行能力。     

Numerical Simulation and Assessment of a Two‐Stage Gasifier Modified from an Opposed Multi‐Burner Gasifier

An opposed multi‐burner (OMB) entrained‐flow gasifier with coal water slurry feeding is developed by the East China University of Science and Technology. A 3D model is employed to numerically simulate the gas flow field, motion of char particles, and distributions of temperature and gaseous components in an OMB gasifier and in a conceptual two‐stage gasifier modified from the OMB gasifier (TS‐OMB gasifier). Results show that the TS‐OMB gasifier produces higher concentration and productivity of the effective gases (CO+H₂) with a slightly higher carbon conversion than the OMB gasifier. The reasons for the differences between these two types of gasifier are discussed by means of numerical simulation. This information is valuable for guiding the design of an advanced OMB gasifier.