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CH-20型焦化蜡油加氢处理催化剂性能及工业应用 总被引:4,自引:0,他引:4
CH-20催化剂以Mo-Ni为加氢活性组分,采用Al2(SO4)3和NaAlO2为原料路线制备Al2O3载体,具有适宜的孔结构,加氢活性高,稳定性好,适用于CGO加氢处理制备催化裂化原料。试验结果表明。在中压(氢压6.4MPa)下,加氢处理氛含量0.49%(碱氮0.19%)、硫含量0.92%的管输CGO,其脱氮率为76%~78%,脱碱氛单~85%,脱硫率在95%以上。该催化剂于1997年2月在长岭炼油化工总厂300kt/a加红装置上工业应用,在反应器入口压力6.3MPa(氢分压5.8MPa)、人口温度340℃的条件下加工氮含量0.45%(碱氛0.165%)的CGO,加氢焦化蜡油(HT-CGO)的碱氮<500μg/g,工业应用效果良好。 相似文献
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以Ni和Mo为活性组分,Al2O3为载体,制备了氧化型Ni-Mo/Al2O3催化剂O-1,在此基础上,以自制的水溶性复合硫化物为硫化剂,制备了器外预硫化型Ni-Mo/Al2O3催化剂S-1,通过BET、XRD和HRTEM等手段对2种催化剂的物化性质做了表征,并对比考察了催化剂对劣质石脑油加氢脱硫脱氮的性能。结果表明:器外预硫化型催化剂对劣质石脑油加氢脱硫脱氮的性能与氧化型催化剂接近,其加氢石脑油产品的硫氮含量均低于0.5 μg/g,这说明采用水溶性复合硫化物为硫化剂可以对氧化型催化剂进行有效地器外预硫化。 相似文献
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连续重整汽油选择性加氢脱烯烃用贵金属催化剂的研究 总被引:2,自引:1,他引:2
研究了Pd/Al2O3催化剂在连续重整汽油选择性加氢脱烯烃反应中的加氢性能,结果表明,对于Pd/Al2O3催化剂采用现有工业常用的工艺条件,不能满足产品需要,其原因是高沸点馏分强吸附在催化剂表面,从而导致催化剂失活.在连续重整汽油BTX馏分选择性加氢脱烯烃的反应过程中,在适宜的工艺条件下,研制的Pd/Al2O3催化剂可以使加氢汽油的溴值小于200 mg-Br·(100 g油)-1、芳烃损失小于0.5个百分点,可以满足芳烃抽提进料的指标要求.采用添加助剂的方法对单纯的Pd贵金属催化剂进行改进,改进的催化剂可用于连续重整汽油全馏分的选择性加氢,具有较好的活性、选择性和稳定性. 相似文献
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采用共沉淀法制备Ni—Cr—Al催化剂,考察了Al2O3含量对反应活性和选择性的影响,利用X射线衍射、程序升温脱附(H2-TPD、Nn3-TPD、CO2-TPD)等手段对催化剂进行了表征,并与反应结果关联。研究表明,催化剂中Al2O2含量显著影响催化剂的酸碱性和活性组分的分散度,同时也影响催化剂吸附氢能力,从而影响催化剂的活性和选择性。共沉淀法制备的Al2O3含量为30%的催化剂活性组分分散度最高,具有适宜的酸、碱性和吸氢能力,因而反应转化率和选择性比其他Al2O3含量催化剂更高,该催化剂在液相空速0.12h^-1、H2空速33mL/g·h、反应温度340℃的条件下进行反应,环己烯基环己酮转化率达99.6%,邻苯基苯酚(OPP)选择性达84.1%。 相似文献
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详细介绍了FF-36加氢精制催化剂和FC-32A加氢裂化催化剂在柴油加氢改质装置上的工业应用。精制催化剂具有反应温度上与裂化催化剂相匹配的加氢脱氮能力,FC-32A具有显著优先裂解重组分能力、开环选择性以及显著提高柴油十六烷值能力。工业标定结果表明,产品汽油、轻质柴油、柴油的硫、氮质量分数均在10-6g/g以内,汽油的脱硫率为98%、脱氮率为99%,轻质柴油脱硫率为99%、脱氮率为99%,柴油脱硫率为99%、脱氮率为99%,达到设计要求。汽油的辛烷值和柴油的十六烷值以及指标达到设计要求。 相似文献
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The apolar and hydrophobic jojoba molecule was made more hydrophilic by the incorporation of primary amino groupsvia the introduction and subsequent reduction of azido groups. The azides were obtained by the substitution of bromine or a mesylate
group introduced into the jojoba oil molecule; by opening of the epoxide ring in epoxy jojoba; or by the addition of bromoazide
to the double bonds of jojoba. 相似文献
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研究了不同条件(静置时间、速度梯度、温度、添加电解质)下模拟含油废水中浮油凝并聚结的过程,探讨了影响浮油稳定性的因素。实验结果及分析表明,适当的静置(20min左右)、一定的速度梯度(1.5~6.9 s~(-1))、较低的温度(5~20℃)以及加入电解质(如NaCl)均可降低浮油废水的稳定性。 相似文献
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Five vegetable oils were each randomized by chemical means (with the use of a sodium potassium alloy) and by enzymatic means
(using a nonspecific lipase). The success of the randomization procedure was confirmed via positional analysis. The oxidative
stabilities of the native and chemically randomized oils were determined at storage temperatures of 28°C and 55°C using absorbance
at 234 nm as indicative of conjugated diene content. No difference between curves occurred in oils stored at 55°C, however,
at the lower temperature all chemically randomized oils had significantly steeper slopes (P<0.05), suggesting a lower stability.
When both enzymatically and chemically randomized oils were compared to native oils at 28°C, no significant difference occurred
between slopes of native and enzymatically randomized oils, however, the end content of conjugated dienes was significantly
higher for chemically randomized canola, corn and soybean oils (P<0.05). No difference was seen between the slopes of the
three different oils from either linseed or sunflower. Since both of these oils exhibited higher oxidation rates, it is possible
that observation of differences between the stability of native and chemically randomized oild is dependent upon the rate
of the reaction. 相似文献
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Temperature effect on the viscosities of palm oil and coconut oil blended with diesel oil 总被引:1,自引:0,他引:1
One of the major difficulties in using crude vegetable oils as substitute fuels in diesel engines is their relatively high
viscosities. Increasing the temperature of the crude vegetable oil, blending it with diesel oil, or the combination of both
offers a simple and effective means of controlling and lowering the viscosities of vegetable oils. This work reports viscosity
data, determined with a rotational bob-and-cup viscometer, for crude palm oil and cononut oil blended with diesel oil over
the temperature range of 20–80°C and for different mixture compositions. All the test oil samples showed a time-independent
newtonian type of flow behavior. The reduction of viscosity with increasing liquid temperature followed an exponential relationship,
with the two constants of the equation being a function of the volume percentage of the vegetable oil in the mixture. A single
empirical equation was developed for predicting the viscosity of these fuel mixtures under varying temperatures and blend
compositions. 相似文献
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研究了用南阳脱沥青油生产凡士林的可能性,提出南阳脱沥青油含有较多的微晶蜡,滴点较高,不是生产凡士林的合适原材料;但若与蜡下油和中等粘度的润滑油、基础油调配后,可生产出同时满足医药和化妆用品标准要求的凡士林产品。 相似文献
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以黄岛油库为例,分析了油库混油现象的原因和解决的办法,在保证生产有序进行的同时,又确保同类不同牌号的油品质量不受影响,对成品油的贮运和管理提供了很好的借鉴。 相似文献