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   催化裂化(fcc) 在 材料科学 分类中 的翻译结果: 查询用时:0.127秒
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催化
裂化
fcc
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  cracking
In addition, thermal cracking, thermal oxidization, carbonization and cyclization of organic substances on the surface of brake block can make the friction surface produce pores or cracks, thus fatigue wear occurs.
      
Study on reformulation of fluid catalytic cracking gasoline and increasing production of light olefins
      
Formation of coke in thermal cracking of jet fuel under supercritical conditions
      
Continuous-flow reactor experiments were carried out to study coke formation from thermal cracking of home-made jet fuel RP-3 under supercritical conditions.
      
The starting cracking temperature of RP-3 fuel was determined to be 471.8°C by differential scanning calorimetry (DSC).
      
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The OTA technology jointly developed by Fushun Research Institute of Petroleum Processing of SINOPEC and Dalian University of Technology was introduced briefly. The OTA technology upgraded full range FCC gasoline by alkylation, aromatization, isomerization and little cracking can deeply reduce olefin level in FCC gasoline. On the other hand, the road octane number( (R+M)/2) loss is very low, gasoline yield is high. The test results indicate that the desulfurization and olefin removal of FCC gasoline of OTA are...

The OTA technology jointly developed by Fushun Research Institute of Petroleum Processing of SINOPEC and Dalian University of Technology was introduced briefly. The OTA technology upgraded full range FCC gasoline by alkylation, aromatization, isomerization and little cracking can deeply reduce olefin level in FCC gasoline. On the other hand, the road octane number( (R+M)/2) loss is very low, gasoline yield is high. The test results indicate that the desulfurization and olefin removal of FCC gasoline of OTA are about 60%~77% respectively, road octane number( (R+M)/2) loss is 0~1.2 units, C~+_5 gasoline yield is 92.0%~97.0%, and chemical hydrogen consumption is 0.20%~0.40%.

介绍了抚顺石油化工研究院和大连理工大学合作开发的OTA(Olefintoaromatics&alkylates)全馏份催化裂化(FCC)汽油降烯烃技术,利用OTA技术对全馏份FCC汽油进行了加氢改质处理,通过烃类烷基化、芳构化、异构化和少量裂化等烃类转化反应,使烯烃含量大幅度降低,同时产物的辛烷值损失较低,汽油收率高。结果表明:OTA技术FCC汽油脱硫率约为70%、烯烃饱和率为60%~77%,抗爆指数(R+M)/2损失0~1.2,C+5汽油液收92.0%~97.0%,化学氢耗为0.20%~0.40%。

TiO_2 nanoparticles was prepared via sol-gel process and then modified by span-40 in ethanol.The result obtained by FT-IR shows that there is span-40 on the surface of TiO_2 nanoparticles.And photocatalytic oxidative desulfurization of fluid catalytic cracking(FCC) gasoline in oil-water extraction system using modified TiO_2 as photocatalyst was studied.A 500 W high pressure Hg lamp was used as the UV-light source for irradiation.Desulfurization rate of FCC gasoline can reach 92.8% after 2 h under the conditions...

TiO_2 nanoparticles was prepared via sol-gel process and then modified by span-40 in ethanol.The result obtained by FT-IR shows that there is span-40 on the surface of TiO_2 nanoparticles.And photocatalytic oxidative desulfurization of fluid catalytic cracking(FCC) gasoline in oil-water extraction system using modified TiO_2 as photocatalyst was studied.A 500 W high pressure Hg lamp was used as the UV-light source for irradiation.Desulfurization rate of FCC gasoline can reach 92.8% after 2 h under the conditions of V(H_2O)∶V(FCC gasoline)=1∶1 and amount of modified TiO_2 at 1 g/L in reaction system.And under such conditions the photochemical oxidative desulfurization kinetics of FCC gasoline is the first-order with apparent rate constant of 1.3289 h~(-1) and half-time of 0.52 h.

以非离子表面活性剂span-40为改性剂在乙醇中对合成的纳米TiO2进行了表面改性,利用傅里叶红外光谱进行了表征,并研究了其在水/油两相系统中光催化氧化催化裂化汽油脱硫情况。结果表明,纳米TiO2表面有span-40存在,并能稳定悬浮存在于油相中;在水/油体积比为1∶1、亲油性纳米TiO2加入量为1 g/L的条件下,以500 W高压汞灯为光源照射2 h后,催化裂化(FCC)汽油的脱硫率为92.8%;光催化氧化FCC汽油脱硫为一级动力学反应,反应速率常数为1.3289 h-1,半衰期为0.52 h。

 
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