GB761501A - Improvements in the catalytic cracking of hydrocarbon oils - Google Patents
Improvements in the catalytic cracking of hydrocarbon oilsInfo
- Publication number
- GB761501A GB761501A GB22914/54A GB2291454A GB761501A GB 761501 A GB761501 A GB 761501A GB 22914/54 A GB22914/54 A GB 22914/54A GB 2291454 A GB2291454 A GB 2291454A GB 761501 A GB761501 A GB 761501A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reactor
- catalyst
- gas oil
- riser
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G11/14—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts
- C10G11/18—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts according to the "fluidised-bed" technique
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
<PICT:0761501/III/1> In a process for the catalytic cracking of heavy hydrocarbon oils employing the heat-balanced fluidized catalyst technique, hot gas oil separated from the cracked products is cooled and then mixed with hot regenerated catalyst to produce a suspension of catalyst in oil vapours having a temperature above the cracking temperature (but not above 1050 DEG F.); this suspension is passed through a transfer line into the bottom of the fluidized catalyst bed in the reaction zone; and the fresh feed oil, preheated to a temperature below the cracking temperature, is separately introduced into the bottom of the fluidized catalyst bed, wherein the two streams intermingle to produce a suspension of catalyst in oil vapour at the cracking temperature. The process produces good quality gasoline, and obviates overcracking of the feed. The relative depth of cracking may be varied by the amount of cooling and heating, respectively, of the two streams fed to the reaction zone. The apparatus shown comprises a preheating furnace 9, a reactor 2, a product fractionator 6 to which are connected sidestrippers 7 and 8, a cooler 10 connected to the lower end of a riser 5 which leads up into the bottom of reactor 2, and a regenerator 1 which is connected to the lower end of riser 5 by standpipe 3. Gas oil at 600 DEG F. removed from the sidestrippers is passed through line 14 to cooler 10 where it is cooled to 180 DEG F. This recycle gas oil is then introduced into riser 5 where it mixes with regenerated catalyst at 1100 DEG F. from standpipe 3 to form a suspension of catalyst in oil vapours at about 1000 DEG F., which flows up the riser to reactor 2. Virgin gas oil is preheated in furnace 9 to 740 DEG F., and is then discharged through line 15 into the reactor at the top of riser 5. The feed rate ratio of virgin gas oil to recycle gas oil is 2:1; and the temperature of the mixture where it mingles with the fluidized bed of catalyst in reactor 2 is about 900 DEG F. A pressure of 11 p.s.i.g. is maintained in the reactor. The product vapours, issuing from the reactor through line 11, are passed to fractionator 6. Gasoline and gases are withdrawn from the head of the fractionator, and gas oil fractions are taken off into side-strippers 7 and 8. Spent catalyst leaves reactor 2 through line 4, and is regenerated in regenerator 1 which is maintained at a pressure of 16 p.s.i.g.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US761501XA | 1953-08-10 | 1953-08-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB761501A true GB761501A (en) | 1956-11-14 |
Family
ID=22130224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22914/54A Expired GB761501A (en) | 1953-08-10 | 1954-08-06 | Improvements in the catalytic cracking of hydrocarbon oils |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE951472C (en) |
FR (1) | FR1112738A (en) |
GB (1) | GB761501A (en) |
NL (1) | NL86279C (en) |
-
0
- NL NL86279D patent/NL86279C/xx active
-
1954
- 1954-08-06 GB GB22914/54A patent/GB761501A/en not_active Expired
- 1954-08-08 DE DEN9303A patent/DE951472C/en not_active Expired
- 1954-08-09 FR FR1112738D patent/FR1112738A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1112738A (en) | 1956-03-19 |
NL86279C (en) | 1957-04-15 |
DE951472C (en) | 1956-10-31 |
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