共查询到20条相似文献,搜索用时 109 毫秒
1.
2.
简要介绍针对焦炉气制甲醇过程中焦炉气利用率较低的生产现状,提出了焦炉气制甲醇装置补充二氧化碳的方法,以优化焦炉气成份,达到提高焦炉气利用率的目的。 相似文献
3.
河北沧州200 kt/a焦炉气制甲醇项目,利用焦化装置副产的焦炉煤气,通过脱硫、纯氧转化及热回收、压缩、甲醇合成、精馏等工艺制取甲醇,本文简述了该焦炉气制甲醇装置工艺路线和各主要工段的工艺流程,阐述了该装置的设计技术特点和焦炉气制甲醇项目注意的要点。 相似文献
4.
分析了焦化产业湿法熄焦技术存在的问题,简述了现有焦炉综合利用技术的现状及发展瓶颈;提出了半湿法焦炉气制天然气联产甲醇的新工艺。结果表明,该工艺具有以下优势:①可提高焦炉气产量,调整焦炉气有效成分,改善湿法熄焦工况;②可省去单一焦炉气制甲醇装置的转化工序和空分设备,节省项目投资;③可省去单一焦炉气制天然气装置中的甲烷化工艺过程,剔除了甲烷化技术瓶颈的约束。 相似文献
5.
6.
详细介绍了焦炉气制甲醇的工艺技术,对过程补碳及装置的工艺特点进行了简介,为焦炉气的合理利用提供了借鉴参考。 相似文献
7.
建立了适合我国焦炉气制甲醇生命周期能源消耗与排放的分析模型,进行了焦炉气制甲醇生命周期的分析研究。研究发现,焦炉气制甲醇生命周期以原煤消耗为主,原油消耗下降为占化石能源消耗结构的1%。在总能源消耗方面,焦炉气制甲醇高于传统汽油和煤气化制甲醇路线,其在燃料阶段的能源消耗是传统汽油的6.9倍;与煤气化制甲醇相比,燃料阶段的能耗高出煤气化制甲醇约11%。在温室气体排放方面,焦炉气制甲醇路线温室气体的排放量约是传统汽油的1.8倍,其CO2和GHGs排放比煤气化制甲醇路线的少10%以上。 相似文献
8.
0引言
我公司200kt/a焦炉气配水煤气制甲醇项目于2008年6月投产。该项目利用公司焦化厂的32650m^3/h焦炉气为主要原料,焦炉气中甲烷转化采用纯氧转化工艺,甲醇精馏采用预精馏塔、加压精馏塔、常压精馏塔、回收塔的“三加一塔”工艺流程。 相似文献
9.
10.
11.
焦炉煤气生产甲醇技术进展及产业化现状 总被引:8,自引:0,他引:8
焦炉煤气制甲醇工艺的研发成功,不仅可以有效利用焦炉气资源,同时生产甲醇原料气。介绍了焦炉气制甲醇工艺中的净化工艺和转化工艺,以及该技术在我国目前的应用状况,并分析了其经济性指标。国内8万t/a及12万t/a两套装置顺利开车及稳定运行证明该工艺成熟、可靠。 相似文献
12.
Study on a multifunctional energy system producing coking heat, methanol and electricity 总被引:1,自引:0,他引:1
A multifunctional energy system (MES) capable of consuming coke oven gas (COG) and coal, and simultaneously producing coking heat, methanol and electricity, was subject to an exergy analyses based on Energy Utilization Diagrams (EUDs). In this system a coal-fired coke oven is adopted to produce coke and COG, where non-coking coal is burned to supply thermal energy to the coking process. The COG and coal gas gasified from coal in a gasifier, were mixed to produce syngas for methanol synthesis. Since COG rich in hydrogen and coal gas rich in CO, the mixture of COG and coal gas can easily adjust the mole ratio of CO to H2 of syngas instead of the conversional reforming and shift processes. The active component of syngas is firstly converted into methanol and then the rest is introduced to a gas turbine for power generation. As a result, the overall efficiency of the MES system is about 62.3%, and its energy savings ratio is about 15% comparing with individual systems. The paper provides a new approach to use coal more efficiently and cleanly. 相似文献
13.
Dry reforming of coke oven gases over activated carbon to produce syngas for methanol synthesis 总被引:1,自引:0,他引:1
J.M. Bermúdez 《Fuel》2010,89(10):2897-2902
The dry reforming of coke oven gases (COG) over an activated carbon used as catalyst has been studied in order to produce a syngas suitable for methanol synthesis. The primary aim of this work was to study the influence of the high amount of hydrogen present in the COG on the process of dry reforming, as well as the influence of other operation conditions, such us temperature and volumetric hourly space velocity (VHSV). It was found that the reverse water gas shift (RWGS) reaction takes place due to the hydrogen present in the COG, and that its influence on the process increases as the temperature decreases. This situation may give rise to the consumption of the hydrogen present in the COG, and the consequent formation of a syngas which is inappropriate for the synthesis of methanol. This reaction can be avoided by working at high temperatures (about 1000 °C) in order to produce a syngas that is suitable for methanol synthesis. It was also found that the RWGS reaction is favoured by an increase in the VHSV. In addition, the active carbon FY5 was proven to be an adequate catalyst for the production of syngas from COG. 相似文献
14.
15.
焦炉煤气制甲醇是一项具有明显经济效益、良好环境效益和社会效益的绿色可持续发展焦化技术工艺,焦炉煤气深度净化是关键技术。介绍JT-8型加氢催化剂在焦炉煤气制甲醇装置上的工业应用。工业应用结果表明,采用的JT-8型焦炉煤气加氢转化催化剂有机硫加氢转化率达98.1%、不饱和烃加氢饱和转化率达100%、O2深度转化率达100%;二级脱硫反应器出口净化气中杂质含量和总硫含量完全满足后续工序<0.1 mg·m-3的要求,保证了生产装置长周期稳定运行。JT-8型加氢催化剂适应性强、深度转化能力高(有机硫加氢转化、不饱和烃加氢饱和及O2深度转化)、副反应少、性能稳定、处理量大和运行寿命长,具有明显的经济效益。 相似文献
16.
17.
18.
与煤制甲醇和天然气制甲醇工艺相比,焦炉煤气制甲醇不仅可以有效利用焦炉煤气中的氢,而且具有低成本的优势。在焦炉煤气制甲醇工艺基础上,文中提出了3种具有发展潜力的焦炉煤气综合利用方案:①气化煤气-焦炉煤气制甲醇生产方案;② 焦炉煤气-乙炔-甲醇下游产品方案;③ 气化煤气-焦炉煤气-乙炔-甲醇下游产品方案。以200×104 t焦炭的生产规模分析了3种方案经济性,其毛利润分别为24.21亿元,18.92亿元和28.74亿元;内部收益率分别为28.29%、24.34%和27.11%。气化煤气-焦炉煤气-乙炔-甲醇下游产品方案充分发挥了规模效应和产品高附加值的特点,具有明显的经济优势;系统灵活性高,抵御市场风险能力强。 相似文献
19.