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公开(公告)号：US4913800A
公开(公告)日：1990-04-03
申请号：US275886
申请日：1988-11-25
CPC分类号： B01J8/1809 , C10G49/12 , C10G49/26 , Y10S208/01
摘要： A method has been discovered for controlling catalytic reactor bed temperature in an ebullated bed process. A sour, aromatic feedstock is mixed with a conventional ebullated bed residual oil feedstock in a controlled ratio. The aromatic feedstock is catalytically cracked and thereby releases heat. The flow rate of the aromatic feedstock is controlled to maintain the reactor bed at a selected catalytic reaction temperature.Both feedstocks are upgraded to a fuel boiling range fraction and the fired heater is eliminated for the conventional feedstock and optionally for the hydrogen-containing gas feed stream as well.
摘要翻译： 已经发现了用于控制沸腾床方法中的催化反应器床温度的方法。 将酸性芳香原料与常规沸腾床残余油原料以控制的比例混合。 芳族原料被催化裂化，从而释放热量。 控制芳族原料的流速以将反应器床保持在选定的催化反应温度。 两种原料都升级到燃料沸程，燃烧的加热器也可以用于常规原料，也可以任选地用于含氢气体进料流。
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公开(公告)号：US4895639A
公开(公告)日：1990-01-23
申请号：US321112
申请日：1989-03-09
摘要： In an ebullated bed process, a residual hydrocarbon oil and a hydrogen containing gas is passed upwardly through an ebullated bed of catalyst in a hydrocracking zone at a temperature in the range of 650.degree. F. to 950.degree. F. and pressure of 1000 psia to 5000 psia. FCCU catalyst fines are added to the ebullated bed in an amount of 15 wt % to 21 wt % of total catalyst comprising hydrocracking catalyst and fines. A hydrocracked oil is recovered characterized by having a reduced sediment content.
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公开(公告)号：US5108580A
公开(公告)日：1992-04-28
申请号：US320432
申请日：1989-03-08
申请人： Govanon Nongbri , Gerald V. Nelson , Roy E. Pratt , Charles H. Schrader , William B. Livingston , Michael P. Bellinger , Scott M. Sayles
发明人： Govanon Nongbri , Gerald V. Nelson , Roy E. Pratt , Charles H. Schrader , William B. Livingston , Michael P. Bellinger , Scott M. Sayles
CPC分类号： C10G69/04
摘要： In a two stage catalytic cracking process a heavy cycle gas oil fraction (HCGO) nominal boiling range 600.degree. F. to 1050.degree. F., API gravity of -10.degree. to +10.degree. and 65 to 95 vol % aromatics is recycled to extinction between an ebullated bed hydrocracking zone and fluidized catalytic cracking zone to yield a liquid fuel and lighter boiling range fraction as the light fraction from each zone.The catalyst in the fluidized catalytic cracking zone is maintained at a micro activity 68 to 72 while cracking a virgin gas oil to HCGO. HCGO is then mixed with vacuum residuum and hydrocracked in an ebullated bed reactor. The mid range fraction is recycled to the fluidized catalytic cracking zone. The 1000.degree. F..sup.+ fraction is blended with a fuel oil.
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公开(公告)号：US4898663A
公开(公告)日：1990-02-06
申请号：US275831
申请日：1988-11-25
IPC分类号： C10G47/26
CPC分类号： C10G47/26
摘要： In an ebullated bed process, it has been found that in switching from one sediment yielding feedstock to a second sediment yielding feedstock that the transient sediment concentration is 5 to 8 times the steady state concentration. Such transients have caused unit shutdowns with lost production time.A method has been found which avoids these high transient sediment concentrations. Second feedstock is added incrementally (1 vol % to 2 vol % of the final rate) over the period of a week or more and sediment in the product analyzed. After full second feedstock rate is achieved, first feedstock is reduced incrementally with sediment analysis. Higher unit utilization is achieved with the corresponding increased yearly production.
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