CN110055099A - A kind of processing method of catalytic cracking recycle oil - Google Patents
A kind of processing method of catalytic cracking recycle oil Download PDFInfo
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- CN110055099A CN110055099A CN201910423222.7A CN201910423222A CN110055099A CN 110055099 A CN110055099 A CN 110055099A CN 201910423222 A CN201910423222 A CN 201910423222A CN 110055099 A CN110055099 A CN 110055099A
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- oil
- recycle
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- 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
- C10G69/00—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process
- C10G69/02—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only
- C10G69/06—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only including at least one step of thermal cracking in the absence of hydrogen
-
- 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
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/02—Gasoline
-
- 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
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/04—Diesel oil
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (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
The present invention provides a kind of processing methods of catalytic cracking recycle oil, comprising the following steps: a) mixes recycle oil with slurry oil, obtains mixing slurry oil；B) the mixing slurry oil for obtaining step a) carries out cracking conversion, respectively obtains converted product and wax tailings；C) wax tailings obtained step b) carry out hydrogenation reaction, obtain plus hydrogen after wax oil.The processing method provided by the present invention no longer send recycle oil to riser reactor, but the fractionation column base for being adjusted to catalytic cracking unit is mixed with slurry oil, to both improve the property of slurry oil, reduce its coking tendency, the influence for avoiding recycle oil to react fresh feed again, and the conversion ratio of recycle oil is improved, improve product distribution, there is distinct economic.The experimental results showed that the processing method can convert 30%~50% recycle oil to the converted products such as diesel oil, gasoline and coke, remaining recycle oil further obtains adding wax oil after hydrogen that can again return to catalytic cracking unit as quality raw materials.
Description
Technical field
The present invention relates to oil refining processing technique fields, more specifically, are related to a kind of catalytic cracking recycle oil
Processing method.
Background technique
Catalytic cracking unit can all separate in fractionating column and generate recycle oil, and recycle oil belongs to device intermediate product, conventional
Processing method is that freshening is recycled inside device, by itself and fresh feed mixed feeding to riser reactor.Applicant is according to dress
Setting influence of data in June, the 2016 analysis recycle oil to product distribution, (recycle oil is blended in riser with fresh feed to react
It is not mutually indepedent, it is interactional, the product point of fresh feed can not be calculated by the product distribution of mixed feeding
Cloth, this method are that product distribution is carried out theoretic folding according to the ratio of fresh feed 86.02% and recycle oil 13.98%
It calculates, then product distribution corresponding with miscella charging compares, according to product distribution differential analysis recycle oil to the shadow of reaction
Ring):
Device recycle oil freshening amount is 33t/h, processing capacity 203t/h, recycle ratio 16.26%, main product distribution
It see the table below:
From the point of view of product distribution difference result, recycle oil and fresh feed mixed feeding, the influence to product distribution is still
Biggish, its conversion ratio reduces nearly 2.5 percentage points after recycle oil freshening, the most it is apparent that liquefied gas and yield of gasoline difference
2.42 and 1.95 percentage points are reduced, the olefin yields such as same ethylene, propylene isobutene also have and reduce by a small margin, corresponding heavy oil
Go up respectively with coke 2.22 and 2.02 percentage points, diesel yield slightly goes up.
To sum up, recycle oil composition enters back into the conversion ratio of riser reactor mainly based on aromatic hydrocarbons and polycyclic ring alkane
It is very low, it is affected to entire product distribution, the most it is apparent that liquefied gas and yield of gasoline reduce, corresponding heavy oil and coke
Carbon yield goes up.
Summary of the invention
In view of this, can be improved back the purpose of the present invention is to provide a kind of processing method of catalytic cracking recycle oil
The conversion ratio of oil refining improves product distribution, has distinct economic.
The present invention provides a kind of processing methods of catalytic cracking recycle oil, comprising the following steps:
A) recycle oil is mixed with slurry oil, obtains mixing slurry oil；
B) the mixing slurry oil for obtaining step a) carries out cracking conversion, respectively obtains converted product and wax tailings；
C) wax tailings obtained step b) carry out hydrogenation reaction, obtain plus hydrogen after wax oil.
Preferably, recycle oil described in step a) is in the middle part of the fractionating column of catalytic cracking unit；The slurry oil comes from and urges
Change the fractionation column base of cracking unit.
Preferably, the mass ratio of recycle oil described in step a) and slurry oil is 8.5:(1~8).
Preferably, the process of mixing described in step a) specifically:
Freshening oil pipeline is incorporated to slurry oil pipeline, and slowly opens valve to valve opening and opens to 40%~60%, freshening
Oil is fully incorporated slurry oil pipeline and mixes with slurry oil, obtains mixing slurry oil.
Preferably, the speed for opening valve is 4% aperture/h~6% aperture/h.
Preferably, the process that conversion is cracked described in step b) carries out in coking plant；The temperature of the cracking conversion
It is 490 DEG C~495 DEG C, the time is 30s~35s.
Preferably, converted product described in step b) includes:
Diesel oil 40wt%~55wt%；
Gasoline 5wt%~10wt%；
Coke is surplus.
Preferably, the process of hydrogenation reaction described in step c) carries out in Wax Oil Hydrogenation Unit；The hydrogenation reaction
Hydrogenation pressure is 10MPa~11MPa, and temperature is 340 DEG C~360 DEG C, and the time is 0.7s~1s.
The present invention provides a kind of processing methods of catalytic cracking recycle oil, comprising the following steps: a) by recycle oil and oil
Slurry mixing obtains mixing slurry oil；B) the mixing slurry oil for obtaining step a) carries out cracking conversion, respectively obtains converted product and coke
Change wax oil；C) wax tailings obtained step b) carry out hydrogenation reaction, obtain plus hydrogen after wax oil.Compared with prior art, originally
The processing method that invention provides no longer send recycle oil to riser reactor, but is adjusted to the fractionation of catalytic cracking unit
Tower bottom is mixed with slurry oil, to both improve the property of slurry oil, reduces its coking tendency, and avoid recycle oil to fresh feed
The influence of reaction, and by the conversion ratio of particular procedure technique raising recycle oil, improve product distribution, there is significantly economic imitate
Benefit.The experimental results showed that the processing method provided by the present invention can convert 30%~50% recycle oil to diesel oil, gasoline and
The converted products such as coke, the recycle oil of residue 70%~50% further obtain adding wax oil after hydrogen that can again return to catalytic cracking dress
It sets as quality raw materials.
In addition, the processing method provided by the present invention is small to the improvement of former catalytic cracking unit, it is at low cost；And it can be small size
Degree reduces crude oil and starches internal circulating load, to reduce energy consumption.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
The present invention provides a kind of processing methods of catalytic cracking recycle oil, comprising the following steps:
A) recycle oil is mixed with slurry oil, obtains mixing slurry oil；
B) the mixing slurry oil for obtaining step a) carries out cracking conversion, respectively obtains converted product and wax tailings；
C) wax tailings obtained step b) carry out hydrogenation reaction, obtain plus hydrogen after wax oil.
The present invention first mixes recycle oil with slurry oil, obtains mixing slurry oil.In the present invention, the recycle oil preferably comes
In the middle part of the fractionating column of catalytic cracking device.In the present invention, the product distribution of the recycle oil is preferred specifically:
Hydrogen 0.1wt%~1wt%；
Dry gas 1wt%~2wt%；
Ethylene 0.1wt%~0.5wt%；
Propylene 5wt%~10wt%；
Isobutene 1wt%~2wt%；
Liquefied gas 10wt%~20wt%；
Gasoline 10wt%~20wt%；
Diesel oil 20wt%~30wt%；
Heavy oil 30wt%~40wt%；
Coke 9.5wt%~10wt%；
More preferably:
Hydrogen 0.4wt%~0.5wt%；
Dry gas 1.5wt%~1.6wt%；
Ethylene 0.2wt%~0.3wt%；
Propylene 6wt%~7wt%；
Isobutene 1.4wt%~1.5wt%；
Liquefied gas 15wt%~16wt%；
Gasoline 15wt%~16wt%；
Diesel oil 20wt%~25wt%；
Heavy oil 30wt%~35wt%；
Coke 9.8wt%~9.9wt%.
In the present invention, fractionation column base of the slurry oil from catalytic cracking unit.In the present invention, the slurry oil
Product distribution is preferred specifically:
Pitch 2wt%~8wt%；
Colloid 9wt%~15wt%；
Saturated hydrocarbons 13wt%~19wt%；
Aromatic hydrocarbon 64wt%~70wt%；
More preferably:
Pitch 5wt%；
Colloid 12wt%；
Saturated hydrocarbons 16wt%；
Aromatic hydrocarbon 67wt%.
In the present invention, the mass ratio of the recycle oil and slurry oil is preferably 8.5:(1~8), more preferably 8.5:6.8.
In addition, the mass ratio of the recycle oil and slurry oil is subject to processing the influence of many factors such as raw material and operating parameter, it is generally not
It is changeless.
In the present invention, the amount of the recycle oil is preferably the 5%~15% of the processing capacity of catalytic cracking unit, more preferably
It is 5%.In the preferred embodiment of the invention, the amount of the recycle oil is the 5% of the processing capacity of catalytic cracking unit, described to urge
The processing capacity for changing cracking unit is 170t/h, i.e., the amount of the described recycle oil is 8.5t/h.
In the present invention, the mixed process is preferred specifically:
Freshening oil pipeline is incorporated to slurry oil pipeline, and slowly opens valve to valve opening and opens to 40%~60%, freshening
Oil is fully incorporated slurry oil pipeline and mixes with slurry oil, obtains mixing slurry oil；
More preferably:
Freshening oil pipeline is incorporated to slurry oil pipeline, and slowly opens valve to valve opening and opens to 50%, recycle oil is whole
It is incorporated to slurry oil pipeline to mix with slurry oil, obtains mixing slurry oil.
In the present invention, it is had by adding one between the freshening oil pipeline and slurry oil pipeline of former catalytic cracking unit
The pipeline of valve can be realized freshening oil pipeline being incorporated to slurry oil pipeline, small to the improvement of former catalytic cracking unit, at low cost.
In addition, after freshening oil pipeline is incorporated to slurry oil pipeline, by both control flow according to the mass ratio of above-mentioned recycle oil and slurry oil,
Crude oil slurry internal circulating load can be reduced by a small margin, to reduce oil-slurry pump power consumption and fractionating system energy consumption.
The present invention by the way of above-mentioned slow opening valve, can anti-locking apparatus there is fluctuation.In the present invention,
The speed for opening valve is preferably 4% aperture/h~6% aperture/h, more preferably 5% aperture/h.
After obtaining the mixing slurry oil, obtained mixing slurry oil is carried out cracking conversion by the present invention, is respectively obtained conversion and is produced
Object and wax tailings.In the present invention, the mixing slurry oil preferably reduces by 4%~60% compared to crude oil slurry asphalt quality content,
So as to improve the property of slurry oil, its coking tendency is reduced.
In the present invention, the process of the cracking conversion carries out preferably in coking plant；The temperature of the cracking conversion
Preferably 490 DEG C~495 DEG C, more preferably 493 DEG C~495 DEG C；The time of the cracking conversion is preferably 30s~35s, more excellent
It is selected as 33s~35s.
The present invention can be converted in coking plant, be obtained through above-mentioned cracking conversion process, recycle oil 30%~50%
Converted product preferably include:
Diesel oil 40wt%~55wt%；
Gasoline 5wt%~10wt%；
Coke is surplus；
More preferably:
Diesel oil 52wt%~53wt%；
Gasoline 7wt%~8wt%；
Coke 39wt%~41wt%.
The recycle oil of residue 70%~50% generates wax tailings, and the present invention further adds obtained wax tailings
Hydrogen reaction, obtain plus hydrogen after wax oil.In the present invention, the process of the hydrogenation reaction carries out in Wax Oil Hydrogenation Unit；It is described
The hydrogenation pressure of hydrogenation reaction is preferably 10MPa~11MPa, more preferably 10.5MPa；The temperature of the hydrogenation reaction is preferably
340 DEG C~360 DEG C, more preferably 345 DEG C~350 DEG C；The time of the hydrogenation reaction is preferably 0.7s~1s, more preferably
0.85s~0.9s.
The present invention uses above-mentioned hydrogenation reaction, can convert saturated hydrocarbons for 90% or more aromatic hydrocarbons in wax tailings, add hydrogen
Wax oil can again return to catalytic cracking unit as quality raw materials afterwards.
The processing method provided by the present invention no longer send recycle oil to riser reactor, but is adjusted to catalytic cracking
The fractionation column base of device is mixed with slurry oil, to both improve the property of slurry oil, reduces its coking tendency, and avoid recycle oil
Influence to fresh feed reaction, and by the conversion ratio of particular procedure technique raising recycle oil, improve product distribution, has aobvious
Write economic benefit.
The present invention provides a kind of processing methods of catalytic cracking recycle oil, comprising the following steps: a) by recycle oil and oil
Slurry mixing obtains mixing slurry oil；B) the mixing slurry oil for obtaining step a) carries out cracking conversion, respectively obtains converted product and coke
Change wax oil；C) wax tailings obtained step b) carry out hydrogenation reaction, obtain plus hydrogen after wax oil.Compared with prior art, originally
The processing method that invention provides no longer send recycle oil to riser reactor, but is adjusted to the fractionation of catalytic cracking unit
Tower bottom is mixed with slurry oil, to both improve the property of slurry oil, reduces its coking tendency, and avoid recycle oil to fresh feed
The influence of reaction, and by the conversion ratio of particular procedure technique raising recycle oil, improve product distribution, there is significantly economic imitate
Benefit.The experimental results showed that the processing method provided by the present invention can convert 30%~50% recycle oil to diesel oil, gasoline and
The converted products such as coke, the recycle oil of residue 70%~50% further obtain adding wax oil after hydrogen that can again return to catalytic cracking dress
It sets as quality raw materials.
In addition, the processing method provided by the present invention is small to the improvement of former catalytic cracking unit, it is at low cost；And it can be small size
Degree reduces crude oil and starches internal circulating load, to reduce energy consumption.
In order to further illustrate the present invention, it is described in detail below by following embodiment.Following embodiment of the present invention
Used in recycle oil from catalytic cracking unit fractionating column in the middle part of；The product distribution ginseng of the recycle oil is shown in Table 1.
The Product distribution data of recycle oil used in 1 embodiment of table
The fractionation column base of slurry oil used from catalytic cracking unit；The product distribution ginseng of the slurry oil is shown in Table 2.
The Product distribution data of slurry oil used in 2 embodiment of table
The processing capacity of the catalytic cracking unit is 170t/h, and the amount of recycle oil accounts for the 5% of fresh feed, i.e. 8.5t/h.
Embodiment 1
(1) freshening oil pipeline is incorporated to slurry oil pipeline, and slowly opens valve according to 5% aperture/h, until valve opening is opened
When to 50%, it is that 6.8t/h slurry oil mixes that recycle oil, which is fully incorporated slurry oil pipeline with flow according to the amount of 8.5t/h, is mixed
Slurry oil；The mixing slurry oil studies on asphaltene amount content is 2%.
Meanwhile the internal circulating load for mixing slurry oil reduces by 5% compared to crude oil slurry, slurry oil pump power can accordingly reduce 7KW.
(2) the mixing slurry oil that step (1) obtains is sent to coking plant and carries out cracking conversion, controlled at 490 DEG C, when
Between be 33s, respectively obtain converted product and wax tailings.
Calculated, there is 40% freshening oil-breaking to be converted into converted product, wherein 52% is converted into diesel oil, 8% is converted into
Gasoline, 40% is converted into coke；The recycle oil of residue 60% generates wax tailings.
(3) wax tailings that step (2) obtains are sent to Wax Oil Hydrogenation Unit and carries out hydrogenation reaction, control hydrogenation pressure is
10.5MPa, temperature be 345 DEG C, time 0.8s, obtain plus hydrogen after wax oil；Wax oil can again return to catalysis and split after described plus hydrogen
Makeup is set as quality raw materials.
Through calculating, aromatic component 92% is converted into saturated hydrocarbons in wax tailings.
Embodiment 2
(1) freshening oil pipeline is incorporated to slurry oil pipeline, and slowly opens valve according to 5% aperture/h, until valve opening is opened
When to 50%, it is that 6.8t/h slurry oil mixes that recycle oil, which is fully incorporated slurry oil pipeline with flow according to the amount of 8.5t/h, is mixed
Slurry oil；The mixing slurry oil studies on asphaltene amount content is 2%.
Meanwhile the internal circulating load for mixing slurry oil reduces by 5% compared to crude oil slurry, slurry oil pump power can accordingly reduce 7KW.
(2) the mixing slurry oil that step (1) obtains is sent to coking plant and carries out cracking conversion, controlled at 493 DEG C, when
Between be 33s, respectively obtain converted product and wax tailings.
Calculated, there is 43% freshening oil-breaking to be converted into converted product, wherein 52% is converted into diesel oil, 8% is converted into
Gasoline, 40% is converted into coke；The recycle oil of residue 57% generates wax tailings.
(3) wax tailings that step (2) obtains are sent to Wax Oil Hydrogenation Unit and carries out hydrogenation reaction, control hydrogenation pressure is
10.5MPa, temperature be 345 DEG C, time 0.85s, obtain plus hydrogen after wax oil；Wax oil can again return to catalysis and split after described plus hydrogen
Makeup is set as quality raw materials.
Through calculating, aromatic component 93% is converted into saturated hydrocarbons in wax tailings.
Embodiment 3
(1) freshening oil pipeline is incorporated to slurry oil pipeline, and slowly opens valve according to 5% aperture/h, until valve opening is opened
When to 50%, it is that 6.8t/h slurry oil mixes that recycle oil, which is fully incorporated slurry oil pipeline with flow according to the amount of 8.5t/h, is mixed
Slurry oil；The mixing slurry oil studies on asphaltene amount content is 2%.
Meanwhile the internal circulating load for mixing slurry oil reduces by 5% compared to crude oil slurry, slurry oil pump power can accordingly reduce 7KW.
(2) the mixing slurry oil that step (1) obtains is sent to coking plant and carries out cracking conversion, controlled at 495 DEG C, when
Between be 35s, respectively obtain converted product and wax tailings.
Calculated, there is 45% freshening oil-breaking to be converted into converted product, wherein 52% is converted into diesel oil, 8% is converted into
Gasoline, 40% is converted into coke；The recycle oil of residue 55% generates wax tailings.
(3) wax tailings that step (2) obtains are sent to Wax Oil Hydrogenation Unit and carries out hydrogenation reaction, control hydrogenation pressure is
10.5MPa, temperature be 345 DEG C, time 0.9s, obtain plus hydrogen after wax oil；Wax oil can again return to catalysis and split after described plus hydrogen
Makeup is set as quality raw materials.
Through calculating, aromatic component 95% is converted into saturated hydrocarbons in wax tailings.
The above description of the disclosed embodiments, enables those skilled in the art to implement or use the present invention.It is right
A variety of modifications of these embodiments will be readily apparent to those skilled in the art, and as defined herein one
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
It will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with the principles and novel features disclosed herein
Widest scope.
Claims (8)
1. a kind of processing method of catalytic cracking recycle oil, comprising the following steps:
A) recycle oil is mixed with slurry oil, obtains mixing slurry oil；
B) the mixing slurry oil for obtaining step a) carries out cracking conversion, respectively obtains converted product and wax tailings；
C) wax tailings obtained step b) carry out hydrogenation reaction, obtain plus hydrogen after wax oil.
2. processing method according to claim 1, which is characterized in that recycle oil described in step a) carrys out catalytic cracking dress
In the middle part of the fractionating column set；Fractionation column base of the slurry oil from catalytic cracking unit.
3. processing method according to claim 1, which is characterized in that the mass ratio of recycle oil described in step a) and slurry oil
For 8.5:(1~8).
4. processing method according to claim 1, which is characterized in that the process of mixing described in step a) specifically:
Freshening oil pipeline is incorporated to slurry oil pipeline, and slowly opens valve to valve opening and opens to 40%~60%, recycle oil is complete
Portion is incorporated to slurry oil pipeline and mixes with slurry oil, obtains mixing slurry oil.
5. processing method according to claim 4, which is characterized in that it is described open valve speed be 4% aperture/h~
6% aperture/h.
6. processing method according to claim 1, which is characterized in that crack the process of conversion described in step b) in coking
It is carried out in device；The temperature of the cracking conversion is 490 DEG C~495 DEG C, and the time is 30s~35s.
7. processing method according to claim 1, which is characterized in that converted product described in step b) includes:
Diesel oil 40wt%~55wt%；
Gasoline 5wt%~10wt%；
Coke is surplus.
8. processing method according to claim 1, which is characterized in that the process of hydrogenation reaction described in step c) is in wax oil
It is carried out in hydrogenation plant；The hydrogenation pressure of the hydrogenation reaction is 10MPa~11MPa, and temperature is 340 DEG C~360 DEG C, and the time is
0.7s~1s.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453543A (en) * | 2010-10-15 | 2012-05-16 | 中国石油化工股份有限公司 | Combined process of hydrotreatment and catalytic cracking for residuum |
| CN103059998A (en) * | 2011-10-21 | 2013-04-24 | 中国石油化工股份有限公司 | Combined process for treating residual oil |
| CN103540359A (en) * | 2012-07-12 | 2014-01-29 | 中国石油天然气股份有限公司 | Low-grade heavy oil catalytic conversion process for increasing yield of low-carbon olefins and gasoline |
-
2019
- 2019-05-21 CN CN201910423222.7A patent/CN110055099B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453543A (en) * | 2010-10-15 | 2012-05-16 | 中国石油化工股份有限公司 | Combined process of hydrotreatment and catalytic cracking for residuum |
| CN103059998A (en) * | 2011-10-21 | 2013-04-24 | 中国石油化工股份有限公司 | Combined process for treating residual oil |
| CN103540359A (en) * | 2012-07-12 | 2014-01-29 | 中国石油天然气股份有限公司 | Low-grade heavy oil catalytic conversion process for increasing yield of low-carbon olefins and gasoline |
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