共查询到20条相似文献,搜索用时 78 毫秒
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应用ChemCAD软件,采用吉布斯反应器模型对转化炉进行模拟,分析了温度、压力、进气量等各工艺条件对反应的影响。模拟结果表明,焦炉煤气部分氧化制取合成气适宜的操作条件为:进气温度500℃,反应压力1.85 MPa,进入转化炉各物流的摩尔流量COG(焦炉煤气):H_2O:O_2:CO_2=1:0.8:0.21:0.095。 相似文献
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《化学反应工程与工艺》2015,(4)
基于Curran反应机理,采用Chemkin软件对贫氧条件下的焦炉气非催化部分氧化过程进行了模拟,并考察了反应温度、反应压力和氧气与焦炉气物质的量之比对焦炉气非催化部分氧化制合成气反应的影响。结果表明:该模型能较好地模拟工业操作条件下的焦炉气非催化部分氧化反应;焦炉气非催化部分氧化动力学时间尺度为毫秒级;反应温度越高,动力学时间越短,当温度提高至1373 K后,动力学时间未见明显缩短;反应压力越大,动力学时间越短,当压力提高至3.0MPa后,动力学时间未见明显缩短;氧气和焦炉气物质的量之比越大,动力学时间越短,但得到的合成气摩尔分数以及H_2和CO物质的量之比也相应降低:当氧气和焦炉气物质的量之比增大至0.262后,合成气中H2和CO物质的量之比维持在2.0~2.5。 相似文献
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Perovskite-type oxygen-permeable membrane reactors of BaCo0.7Fe0.2Nb0.1O3−δ packed with Ni-based catalyst had high oxygen permeability and could be used for syngas production by partial oxidation of methane in coke oven gas (COG). The BCFNO membrane itself had a poor catalytic activity to partial oxidation of CH4 in COG. After the catalyst was packed on the membrane surface, 92% of methane conversion, 90% of H2 selectivity, 104% of CO selectivity and as high as 15 ml/cm2/min of oxygen permeation flux were obtained at 1148 K. During continuously operating for 550 h at 1148 K, no degradation of performance of the BCFNO membrane reactor was observed under the condition of hydrogen-rich COG. The possible reaction pathways were proposed to be an oxidation-reforming process. The oxidation of H2 in COG with the surface oxygen on the permeation side improves the oxygen flux through the membrane, and H2O reacts with CH4 by reforming reactions to form H2 and CO. 相似文献
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为替代污染严重的电石法制乙炔工艺,寻求一条洁净化乙炔生产工艺,利用100 k W直流等离子体装置进行了焦化厂焦炉煤气与解析气制乙炔的研究,分析了原料气流量、氢烷比、反应腔体直径对反应指标的影响。结果表明,随着原料气流量增大,焦炉煤气和解析气主要指标变化趋势相同,CH_4转化率、乙炔选择性、乙炔收率提高,能耗下降,其中焦炉煤气CH_4转化率为50.13%~62.95%,乙炔选择性为60.1%~71.3%,乙炔收率为30.1%~44.8%;解析气CH_4转化率为56.65%~69.56%,乙炔选择性为70.05%~83.33%,乙炔收率为39.6%~57.9%。随着氢烷比的提高,CH_4转化率、乙炔选择性和收率下降,且解析气中CO_2和O_2含量较高,促进了CH_4裂解,使解析气反应结果较好,CH_4转化率最高为69.56%,乙炔选择性83.33%,乙炔收率57.96%,乙炔能耗最低为13.66 k Wh/kg。反应腔体直径为16 mm时,反应结果优于直径17 mm。 相似文献
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我国焦化产业每年副产大量焦炉煤气。从市场前景、技术进展以及效益分析等方面对焦炉煤气经甲醇生产芳烃进行了阐述,为发展绿色、健康、可持续的焦化产业提供了一条新途径。 相似文献
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以H2S、CO2和空气模拟焦炉煤气,以超重机为脱硫设备,采用湿式氧化法脱除焦炉煤气中的H2S,研究了超重力因子、液气比、气液接触时间、原料气中H2S含量等工艺参数对脱硫率的影响规律,结果表明:脱硫效率随着超重力因子、液气比、气液接触时间和原料气中H2S浓度的增大而增大。确定了适宜的工艺参数,在气液接触时间为0.15 s的条件下,获得了98%以上的脱硫效率,CO2的脱除率稳定在1.0%左右,超重力法脱硫技术实现了高效、快速脱硫。在生产现场建成了处理气量为10000 m3/h的工程化超重力湿式氧化法脱硫装置,运行结果显示:超重力湿式氧化法脱除焦炉煤气中H2S技术具有脱硫效率高、气液接触时间短、操作弹性大、设备体积小等优点,H2S脱除率可稳定在90%以上,应用前景广阔。 相似文献
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神马集团首山焦化公司自主创新研发了整体一步法焦炉煤气制二甲醚新工艺,首先对焦炉煤气提氢,制粗甲醇后再合成二甲醚;公司自主研发了醇醚联产二合一生产装置,研制开发了高活性WD型催化剂和汽化提馏塔等设备,经济和环境效益显著。 相似文献
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对煤制乙二醇与焦炉煤气制乙二醇的工艺路线、设备、投资、生产成本及经济效益进行了比较。得出结论,焦炉煤气制乙二醇优于煤制乙二醇。 相似文献
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Hydrogen production by the partial oxidation and steam reforming of tar from hot coke oven gas 总被引:1,自引:0,他引:1
Masaki Onozaki Koji Watanabe Takao Hashimoto Hitoshi Saegusa Yukuo Katayama 《Fuel》2006,85(2):143-149
Hot coke oven gas (COG) with a temperature of about 1050 K was produced from a test unit for coke production, the capacity of which was 80 kg of coal. The COG was introduced into an experimental unit with a tar converter where oxygen and steam were injected. Over 98% of the total carbon in the hot COG was partially oxidized, reformed with steam and converted to hydrogen and CO. About 1 Nm3/h of hydrogen was continuously produced for 5 h in this experiment. The experimental results suggest that three to five times the amount of hydrogen and CO that were present in the original COG could be recovered by this technology, utilizing the heat of the hot COG for the reaction. The feasibility study showed that hydrogen can be produced by this technology at a lower cost and higher efficiency than by the separation of cold COG. 相似文献
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