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近年来,重油的催化裂化迅速发展,新型的重油催化裂化催化剂被不断应用于工业中。我国重油催化裂化催化剂在性能上有了重大的突破:其重油裂化能力大大提高,抗重金属污染,并且干气和焦炭产率较低,不断研发的新品种,本文阐述了近年来我国重油催化裂化催化剂的发展状况。 相似文献
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提高重油加工深度、增加轻质油收率是炼厂扩能增效的重要途径。抗焦活化剂通过抑制胶质沥青质聚集、调节催化剂酸性中心以及抑制过量自由基反应等作用,减少了催化裂化反应过程中热裂化和缩合反应的发生,可有效降低重油催化裂化焦炭产率,提高轻质油收率。本文跟踪考察了抗焦活化剂Z-18在尼日尔炼厂重油催化裂化装置上的工业应用效果。工业应用结果表明,Z-18具有明显的抗焦效果,应用后新鲜催化剂的平均单耗为989.0mg/kg,低于1150mg/kg的设计消耗指标;在原料性质变差的工况下重油催化裂化装置焦炭产率降低了0.2个百分点,轻质油收率增加了1.09个百分点,产品质量未发生明显变化。抗焦活化剂Z-18的应用可以使重油催化裂化装置产生较好的经济效益。 相似文献
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介绍了LOG-90型高辛烷值型重油催化裂化催化剂的反应性能,并进行固定流化床评价。结果表明,与对比催化剂相比,优化反应条件后,LOG-90型催化剂重油产率由5.31%降为5.04%,焦炭产率由8.37%升为8.53%,总液体收率由83.27%降为83.15%,丙烯收率由4.06%升为6.32%,研究法辛烷值提高1.14个单位,达到90.64,马达法辛烷值提高0.85个单位,达到82.50。1.2 Mt·a-1催化裂化装置工业应用结果表明,与空白标定相比,总结标定时油浆产率和总液体收率基本相当,汽油研究法辛烷值提高1.57个单位,达到91.5。单柱色谱法与多维色谱法综合分析结果表明,汽油辛烷值增加是芳烃含量与异构烃含量共同增加的结果。 相似文献
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随着中国化工昌邑石化催化裂化装置(生产能力为1400kt/a)所用原料组分的日益重质化以及进口催化剂国产化要求,原来所用进口重油催化裂化GCR-MV催化剂换用新型重油催化裂化CRM-200催化剂进行工业应用试验。工业应用结果表明:CRM-200催化剂在抗重金属污染方面,较进口GCR-MV催化剂强,在原料V,Ca,Fe质量分数增加的条件下,其平衡剂活性维持及裂解能力达到生产要求;同时催化剂单耗由空白标定时的1.38kg/t减少为1.187kg/t,降低了催化剂成本,提高了装置的经济效益;在掺渣率基本相当的情况下,CRM-200标定时产品分布进一步优化,液化气收率下降0.53个百分点,汽油和柴油收率分别提高0.45和2.27百分点,总液体收率增加1.31百分点,干气产率稍有降低,油浆产率降低1.1百分点。总体来看,CRM-200催化剂性能优于进口催化剂。 相似文献
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对工业拟薄水铝石做了深入表征,并详细研究了拟薄水铝石胶溶酸铝比、催化剂中拟薄水铝石含量以及铝溶胶含量对催化剂重油分子裂化性能的影响。研究显示,拟薄水铝石酸化酸铝比(体积质量比,mL/g)从0增至0.20,孔体积从0.39 cm3/g降至0.27 cm3/g,酸化后酸量先增加后减少,同时催化剂的孔体积下降,重油转化能力先增强后减弱;催化剂中拟薄水铝石质量分数从10%增至25%,催化剂重油转化能力逐渐增强,但随着拟薄水铝石含量的增加,重油产率下降趋势逐渐减小;铝溶胶含量增加将导致催化剂孔体积下降,催化剂重油转化能力下降。 相似文献
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本文介绍了LV-23催化剂的工业应用情况,并对工业应用结果进行了分析,结果表明, LV-23催化剂有很强的抗重金属污染能力,表现出较好的汽油选择性、焦炭选择性、较高的轻油收率和对不同生产方案的适应性。 相似文献
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催化裂化催化剂RSC-2006采用焦炭选择性较好的大孔富硅基质以降低焦炭收率;添加活性基质组分以增强催化剂的重油裂化能力,同时调节基质的表面酸性,在保证重油预裂化能力的同时改善焦炭选择性;对分子筛进行物化处理,清理和疏通分子筛的孔道,改善分子筛对劣质重油催化裂化的可接近性;引入抗金属污染组分,提高催化剂的抗金属污染能力。工业应用结果表明,催化剂具有优异的重油转化能力和优良的焦炭选择性。与对比催化剂相比,油浆和焦炭收率降低,大幅增加高价值产品收率,液化气+汽油+柴油收率提高。 相似文献
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CA-2000 FCC催化剂在ARGG装置上的应用 总被引:2,自引:0,他引:2
详细介绍了CA-2000流化催化裂化(FCC)催化剂在扬州石油化工厂采用中国石化石油化工科学研究院开发的ARGG技术的FCC装置上的应用情况。工业应用结果表明,CA-2000催化剂具有较强的重油转化能力,产品选择性好焦炭产率低,液态烃收率高,抗重金属污染能力较强,可以满足原油性能变差、重油掺炼比提高后工厂的实际生产要求。 相似文献
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以大庆减压蜡油掺杂30%减压渣油为原料,在固定流化床评价装置上考察不同硅铝比的β分子筛助剂的催化裂化反应性能。结果表明,β分子筛硅铝比较小时,重油产率减小,轻油收率和总液体收率增加,气体(干气+液化气)产率减少,而汽油辛烷值增加,但过高硅铝比的β分子筛影响重油转化,适中硅铝比β分子筛助剂的反应性能较好。以中国石油天然气股份有限公司大连石化分公司四催化原料油为原料,在ACE装置上对比评价了直接合成与脱铝改性后获得的相近硅铝比的β分子筛助剂的催化裂化反应性能。结果表明,脱铝改性后获得的β分子筛的重油产率较低,轻油收率和总液体收率均有提高。 相似文献
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R. W. Rammler 《加拿大化工杂志》1970,48(5):552-560
Synthetic crude oil can be produced from oil sand by application of the Lurgi-Ruhrgas process which is characterized by the circulation of fine-grained heat carriers. The process is described and information given on its commercial application to date, which relates to the cracking of hydrocarbons to olefins and the carbonization of fine-grained coal. Reference is made to distillation tests on approx. 45 tons of raw oil sand. The yield of oil in commercial plants is expected to be approx. 95% by weight. Studies and computations show that beneficiated oil sand used as feedstock has advantages over raw oil sand. It is suggested that in a commercial plant beneficiation and LR distillation should be combined. Based on the present state of Technology LR units for an output of about 8,000 - 12,000 bbl/day of crude oil could be built. The approximate capital and operating costs of such a unit are indicated. In closing, reference is made to further possible applications of the LR process. 相似文献
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V. H. Holsinger F. E. Luddy C. S. Sutton H. E. Vettel C. Allen F. B. Talley 《Journal of the American Oil Chemists' Society》1978,55(5):473-477
In order to increase its potential as a food ingredient, an oil fraction derived from a commercial edible beef tallow was
substituted for soybean oil in a formulation designed to yield a spray-dried free-flowing powder readily reconstitutable with
water to yield a nutritious beverage. If desired, the beverage powder could be fortified with a vitamin-mineral premix containing
iron. After 6 months of storage at 37 C, no significant difference in flavor score was observed between samples containing
the beef tallow oil fraction and control samples containing soybean oil. There was also no significant difference in flavor
scores received by samples containing the beef tallow oil fraction fortified with vitamins and minerals and fortified control
samples. However, peroxide values were eight times greater in the unfortified control samples. The beef tallow oil fraction
warrants further study as a food ingredient in engineered food systems where enhanced oxidative stability is desirable. 相似文献
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Michael J. Webb 《Nutrient Cycling in Agroecosystems》2009,83(2):163-178
The theory, and the statistics and mathematics of using factorial fertiliser trials to assist in making fertiliser recommendations
for neighbouring commercial plantings is presented as a conceptual framework and in a format for practical application. As
an example, the yield and leaf nutrient levels from a typical factorial fertiliser rate trial (nitrogen by potassium) were
modelled using multiple linear regression and the resulting response surfaces used to determine the maximum agronomic yield
and optimum economic yield and to calculate the requirement for ‘basal’ fertiliser. Leaf nutrient data in both the trial and
commercial plantings was used to estimate the requirement for ‘corrective’ fertiliser, where necessary, to increase the leaf
nutrient levels to the target leaf nutrient level for maximum yield. All the mathematics required can be incorporated into
a spreadsheet calculator that uses costs (e.g. fertiliser) and prices (e.g. oil) to calculate optimum economic fertiliser
application rates. Problems with extrapolating the results of fertiliser trials to commercial plantings can be overcome by
matching each trial with a corresponding commercial planting domain. 相似文献
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润滑油基础油加氢联合工艺研究 总被引:1,自引:0,他引:1
介绍了采用临氢降凝-加氢精制串联方法制取润滑油基础的实验结果,用此种方法所得到的基础油收率在45%以上,粘度指数100,含硫,氮,芳烃等杂质较少,降凝效果较好,有良好的工业应用前景。 相似文献