CN1415701A - Method for catalyzing and cracking petroleum hydrocarbon in relaying mode - Google Patents
Method for catalyzing and cracking petroleum hydrocarbon in relaying mode Download PDFInfo
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- CN1415701A CN1415701A CN 01134269 CN01134269A CN1415701A CN 1415701 A CN1415701 A CN 1415701A CN 01134269 CN01134269 CN 01134269 CN 01134269 A CN01134269 A CN 01134269A CN 1415701 A CN1415701 A CN 1415701A
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Abstract
A relay-type catalytic cracking process for pertroleum hydrocarbon includes such steps as feeding the regenerating agent in the internal tube and the ring reactino space between internal and external tubes of reactor while flowing upward, feeding raw hydrocarbon oil in internal tube, contacting with catalyst for reaction, flowing the rsultant upward, aggregating the resultant with the regenerating agent from internal tube, reaction, gas-solid separation, feeding oil gas iater separating system, and regenerating catalyst for cyclic use. Its advantage is high reaction activity and selectivity.
Description
Technical field
The invention belongs to the catalyst cracking method of petroleum hydrocarbon under the situation that does not have hydrogen, more particularly, is that a kind of employing double tube reactor carries out hydrocarbon ils relay cracked catalyst cracking method.
Background technology
In the catalytic cracking process of routine, the steam atomizing of stock oil water also sprays in the riser tube, contacts with high temperature catalyst (600～700 ℃) from revivifier therein, vaporizes immediately and reacts.The residence time of oil gas in riser tube is very short, generally has only several seconds.Reaction product is isolated through cyclonic separator and is left reactor behind the catalyzer of carrying secretly and remove separation column.Long-pending have the catalyzer (title reclaimable catalyst) of coke to fall into following stripping stage by settling vessel.The chevron shaped plate washer of multilayer is housed in the stripping stage and feeds overheated steam in the bottom, oil gas that adsorbs on the reclaimable catalyst and the oil gas between the particle are displaced by water vapour and return top.Reclaimable catalyst behind stripping enters revivifier by inclined tube to be generated.The main effect of revivifier is the carbon deposit that generates because of reaction on the burning-off catalyzer, activity of such catalysts is recovered.Catalyzer after the regeneration (title regenerator) falls into upflow tube, sends reactor cycles back to through regenerator sloped tube and uses.
On the basis of above-mentioned catalyst cracking method, disclosed a kind of catalyst cracking method of two reactor among the ZL94217873.4.Concentrate in the 7th nd Annual Meeting of catalytic cracking cooperative groups, name is called the paper of " adopt two-stage riser FCC technology fortifying catalytic reaction process, reduce content of olefin in gasoline research " and has also reported this method.This method is with the two-stage riser reactors in series, and stock oil at first contacts with the high temperature regeneration agent in first section reactor and reacts, and the reaction times should be less than 1 second, and reacted oil gas separates immediately with catalyzer.The reaction oil gas of being told injects second section reactor, contacts, reacts with the agent of new regenerated high temperature regeneration once more, makes oil gas and catalyst separating in experience after the short reaction times equally, and reaction oil gas is sent into and carried out product separation in the subsequent separation system.Long-pendingly have the spent agent of coke to send into the revivifier coke burning regeneration behind stripping by first section reactor and second section reactor are isolated, the catalyzer after the regeneration returns in first section and second section reactor and recycles.Adopt this two-stage catalytic cracking process, because the average activity and the selectivity of catalyzer improve greatly, shortened the reaction times, thereby strengthened catalyzed reaction, reduce thermal response and disadvantageous secondary reaction effectively, can reach the purpose that improves reaction depth, improves product distribution and quality product.But adopt this method no matter be the construction cost of device, or the improvement expenses of equipment can increase therefore and significantly all.In addition, in the actual industrial production process,, also can make the operation easier of device increase many because flow process is complicated.
Summary of the invention
The objective of the invention is to: a kind of method for catalyzing and cracking petroleum hydrocarbon in relaying mode is provided, makes the catalytic cracking process of petroleum hydrocarbon not only have high reaction activity and high, selectivity, and can make process simplification, easy and simple to handle.
Petroleum hydrocarbon in relaying mode cracking method provided by the invention may further comprise the steps:
(1) regenerator enters the bottom of double tube reactor through the catalyst inlet pipe, and upwards flows under the effect of pre-lifting medium, and the regenerators of 20～80 heavy % flow into interior pipe; And the catalyzer of rest part enter in the annular reaction space between pipe and the outer tube, and under the pre-effect that promotes medium, continue upwards to flow;
(2) hydrocarbon oil crude material injects the interior pipe of this reactor, contacts, reacts with wherein catalyzer, and reactant flow upwards flows along wall;
(3) in the ingress of convergence tube, the reactant flow in the interior pipe with converge, react from annular reaction spatial regenerator, and enter in the gas-solid sharp separation equipment through convergence tube, make reaction oil gas and reaction afterwards the catalyzer of carbon deposit be separated;
(4) reaction oil gas is sent into subsequent separation system, and reacted catalyzer through stripping, regeneration after, Returning reactor recycles.
Compared with prior art, beneficial effect of the present invention is mainly reflected in following aspect:
Method provided by the invention can reduce the construction cost and the process cost of device significantly.Compared with prior art, this method only is provided with the gentle solid separation system of a cover reaction, and therefore, therefore the expense of plant construction or plant modification all can reduce.In actual production process, process simplification can make device be easier to operation and maintenance.
Method provided by the invention can realize the flexible adjustment of multiple production decision, for example to produce the scheme of liquefied gas, gasoline, diesel oil, adjusts to produce the scheme of low-carbon alkenes such as ethene, propylene, butylene.Oil refining enterprise adopts this method in time to adjust the product mix according to the variation of the market requirement, obtains remarkable economic efficiency more.
Method provided by the invention can obviously be improved the catalytic cracking product selectivity, reduces coke and dry gas yied.Catalyzer in the annular reaction space between interior pipe and the outer tube is in the flow process that makes progress, heat transfer by tube wall, the reactant flow that constantly is interior pipe is replenished a part of heat, after the logistics of the catalyzer of annular space and interior pipe converges, further for the hydrocarbon ils catalyzed reaction provides required heat and agent-oil ratio, like this, the convergence tube temperature out reduces with the temperature difference that interior pipe agent oil initially contacts temperature, the temperature drop that is whole reactor reduces, thereby has improved product selectivity.
Method provided by the invention can obviously improve the catalyzed conversion degree of depth.Hydrocarbon oil feed enters in the convergence tube after the cracking in interior pipe, contacts with regenerator from the high temperature of annular space, high reactivity, no carbon content, and the further cracking of hydrocarbon ils (relay cracking), thus improved cracking level, help increasing light olefins output.
Description of drawings
Fig. 1 and Fig. 2 are the structural representations of telescoping catalyst cracker of the present invention.
Fig. 3 and Fig. 4 are the principle flow charts that the invention provides method.
Embodiment
Method provided by the present invention can adopt double tube reactor as shown in Figure 1.This reactor mainly comprises with lower member: regenerator inlet tube 1, interior pipe 2, outer tube 3, convergence tube 4, promote distribution rings 5,6 and 7 and feed nozzle 8 and 9 in advance; Wherein, interior pipe 2 is coaxial with outer tube 3, and the ratio of interior pipe cross sectional area of tube core and inner and outer pipes annular space cross-sectional area is 1: 0.1～10; The lower end of interior pipe 2 is positioned at regenerator inlet top, and interior length of tube accounts for 10～70% of this total reactor length; One end of convergence tube 4 links to each other with outer tube 3 upper ends, and the other end links to each other with gas-solid separation equipment, and convergence tube 4 is 1: 0.2～0.8 with the ratio of the cross-sectional area of interior pipe 2; Pre-lifting distribution rings 5,6 and 7 lays respectively at the bottom of this reactor, interior pipe and outer tube.This reactor has been applied for utility model patent, and application number is 01258820.2.
Method provided by the present invention can also adopt double tube reactor as shown in Figure 2.This reactor mainly comprises with lower member: catalyst inlet pipe 21 and 22, interior pipe 2, outer tube 3, convergence tube 4, promote distribution rings 5 and 7 and feed nozzle 8 and 9 in advance; Wherein, interior pipe 2 is coaxial with outer tube 3, and the ratio of interior pipe cross sectional area of tube core and inner and outer pipes annular space cross-sectional area is 1: 0.1～10; Catalyst inlet pipe 21 links to each other with the lower end of interior pipe 2, and interior length of tube accounts for 10～70% of this total reactor length; The distance of outer tube 3 lower ends to interior pipe 2 lower ends accounts for 5～20% of this total reactor length, and catalyst inlet pipe 22 links to each other with the lower end of outer tube 3; One end of convergence tube 4 links to each other with outer tube 3 upper ends, and the other end links to each other with gas-solid separation equipment 11, and convergence tube 4 is 1: 0.2～0.8 with the ratio of the cross sectional area of tube core of interior pipe 2; The bottom of the annular space in pre-lifting distribution rings 5 and 7 lays respectively between pipe and the inner and outer pipe; The bottom of pipe and outer tube in feed nozzle 8 and 9 lays respectively at.This reactor has been applied for utility model patent, and application number is 01264042.5.
In method provided by the invention, the regenerator that enters double tube reactor through the catalyst inlet pipe can be the high temperature regeneration agent from revivifier, also can be through the suitable regenerator after the cooling of catalyst cooler.
The catalyzer that the present invention uses can be any catalyzer that is applicable to catalytic cracking process, its active ingredient can be selected from Y type or HY type zeolite, the ultrastable Y that contains or do not contain rare earth and/or phosphorus, the ZSM-5 series zeolite that contains or do not conform to rare earth and/or phosphorus or supersiliceous zeolite, β zeolite, the ferrierite with five-membered ring structure a kind of, two or three, also can be the amorphous silicon aluminium catalyzer.Catalyzer of the present invention preferably contains the ZSM-5 series zeolite of 0.5～35 heavy % or other the supersiliceous zeolite with five-membered ring structure.Such zeolite can add when making catalyzer, also can make independent catalyzer or auxiliary agent, adds in industrial use, uses with catalyst mix.
In method provided by the invention, the annular reaction spatial bottom between the bottom of double tube reactor, interior pipe bottom and interior pipe and the outer tube all can be provided with pre-lifting medium.The pre-medium that promotes adopts steam, dry gas or their mixture all can.Interior pipe gas superficial linear speed is 0.3～6.0m/s, and the gas superficial linear speed of the annular space between the inner and outer pipe is 0.2～8.0m/s.
The pipe hydrocarbon oil crude material is selected from injecting: the mixture of one or more of time processing gasoline fraction, secondary processing of gasoline cut, time processing diesel oil distillate, secondary processing diesel oil cut, straight-run gas oil, wax tailings, deasphalted oil, hydrofined oil, hydrocracking tail oil, decompressed wax oil, vacuum residuum or long residuum.Wherein, preferred: the mixture of one or more in straight-run gas oil, wax tailings, deasphalted oil, hydrofined oil, hydrocracking tail oil, decompressed wax oil, vacuum residuum or the long residuum.
Hydrocarbon oil crude material is as follows at the reaction conditions of interior pipe: 460～580 ℃ of temperature of reaction, preferred 480～550 ℃; Reaction pressure 0.1～0.6MPa, preferred 0.2～0.4MPa; Agent-oil ratio 3～15, preferred 4～10; Oil gas is 1.0～10 seconds in the residence time of interior pipe, preferred 1.5～5.0 seconds; Temperature before catalyzer contacts with hydrocarbon ils is 620～720 ℃, preferred 650～700 ℃; Atomizing steam 1～15 heavy % (accounting for raw material), preferred 2～10 heavy %.
Hydrocarbon ils is as follows at the reaction conditions of convergence tube: 490～720 ℃ of temperature of reaction, preferred 500～700 ℃; Reaction pressure 0.1～0.6MPa, preferred 0.2～0.4MPa; Agent-oil ratio 4～40, preferred 5～30; Oil gas is 0.5～10 second in the residence time of interior pipe, preferred 1.0～5.0 seconds; Water-oil ratio (water vapor and hydrocarbon ils weight ratio) 3～45 heavy % (accounting for raw material), preferred 5～35 heavy %.
Further specify method provided by the invention below in conjunction with accompanying drawing, but therefore do not make the present invention be subjected to any restriction.
As shown in Figure 3, regenerator enters the bottom of double tube reactor through catalyst inlet pipe 1, and under the effect of pre-lifting medium, upwards flow, pipe 2 in the catalyzer of 20～80 heavy % flows into, and the catalyzer of rest part enter in annular reaction space between pipe 2 and the outer tube 3, and under the pre-effect that promotes medium, continue upwards mobile; Hydrocarbon oil crude material injects the interior pipe of this reactor respectively through nozzle 8, contact, react with catalyzer, and reactant flow continues upwards to flow along wall; Reactant flow in the interior pipe is converged, is reacted in the ingress of convergence tube 4 and from the regenerator in the annular reaction space between interior pipe 2 and the outer tube 3, and enter in the settling vessel 12 through convergence tube, gas-solid sharp separation equipment, reaction oil gas is separated with the catalyzer of reaction back carbon deposit; Reaction oil gas enters subsequent separation system 14, further be separated into various products, and reacted catalyzer falls into stripper 13, the entrained reaction oil gas of stripping catalyst under the effect of water vapour; Catalyzer behind the stripping is sent into revivifier 15 coke burning regenerations, and the catalyzer Returning reactor after the regeneration recycles.
As shown in Figure 4, regenerator enters the interior pipe 2 of canular reactor with agent entering through two way and the annular reaction space between interior pipe 2 and the outer tube 3 respectively through catalyst inlet pipe 21 and 22, and upwards flows under the effect of pre-lifting medium.Hydrocarbon oil crude material injects the interior pipe of this reactor respectively through nozzle 8, contact, react with catalyzer, and reaction oil gas and mixture of catalysts upwards flow along wall.Reactant flow in the interior pipe is converged, is reacted in the ingress of convergence tube 4 and from the regenerator in the annular reaction space between interior pipe 2 and the outer tube 3, and enters settling vessel 12 through convergence tube, gas-solid sharp separation equipment.In settling vessel, reaction oil gas is separated with the catalyzer of reaction back carbon deposit.Reaction oil gas enters subsequent separation system 14, further is separated into various products.Reacted catalyzer falls into stripper 13, the entrained reaction oil gas of stripping catalyst under the effect of water vapour.Catalyzer behind the stripping is sent into revivifier 15 coke burning regenerations, and the catalyzer Returning reactor after the regeneration recycles.
Except that above-mentioned Fig. 3 and shown in Figure 4, in method provided by the invention, the regenerated catalyst that enters reactor can enter the bottom of double tube reactor again after catalyst cooler cooling.
The following examples will give further instruction to method provided by the invention, but therefore the present invention is not subjected to any restriction.
Used catalyzer is that trade names are respectively RMG, CIP-1 and CEP by Qilu Petrochemical catalyst plant industrial production among the embodiment, and these three kinds of catalyzer have all passed through hydrothermal aging.Its main character is referring to table 2.Used hydrocarbon oil crude material is mixed 30 heavy %VR for grand celebration VGO among the embodiment, and its character sees Table 1.The testing apparatus that is adopted among the embodiment is small-sized telescoping catalytic cracking unit.
Embodiment 1
The present embodiment explanation: with the heavy petroleum hydrocarbon is raw material, adopts relay cracking method provided by the invention can obtain higher liquefied gas, gasoline and diesel yield.
Main testing sequence is as follows: as shown in Figure 3, regenerator enters the bottom of double tube reactor through catalyst inlet pipe 1, and under the effect of pre-lifting steam, upwards flow, pipe 2 in the catalyzer of 70 heavy % flows into, and the catalyzer of all the other 30 heavy % enter in annular reaction space between pipe 2 and the outer tube 3, and under the pre-effect that promotes steam, continue upwards mobile; Stock oil shown in the table 1 is injected the interior pipe of this reactor by nozzle 8 after preheating, contact, react with catalyzer, and reactant flow continues upwards to flow along wall; Reaction oil gas in the interior pipe and mixture of catalysts are converged, are reacted in the ingress of convergence tube 4 and from the regenerator in the annular reaction space between interior pipe 2 and the outer tube 3, and enter in the settling vessel 12 through convergence tube, gas-solid sharp separation equipment, reaction oil gas is separated with the catalyzer of reaction back carbon deposit; Reaction oil gas enters subsequent separation system 14, further be separated into various products, and reacted catalyzer falls into stripper 13, the entrained reaction oil gas of stripping catalyst under the effect of water vapour; Catalyzer behind the stripping is sent into revivifier 15 coke burning regenerations, and the catalyzer Returning reactor after the regeneration recycles.
Main operational condition and product distribute referring to table 3.As can be seen from Table 3, the present invention can make total lighter hydrocarbons liquid receive (liquefied gas+gasoline+diesel oil) and reach 86.62 heavy % under lower dry gas and coke yield.
The present embodiment explanation: with the heavy petroleum hydrocarbon is raw material, adopts relay cracking method provided by the invention can obtain higher yield of light olefins such as propylene.
Main testing sequence is as follows: as shown in Figure 4, regenerator enters the interior pipe 2 of canular reactor with agent entering through two way and the annular reaction space between interior pipe 2 and the outer tube 3 respectively through catalyst inlet pipe 21 and 22, and upwards flows under the effect of pre-lifting medium.The catalyzer of pipe accounts for 40% of total catalyst in flowing into, and the catalyzer that flows into annular space accounts for 60%.Hydrocarbon oil crude material injects the interior pipe of this reactor respectively through nozzle 8, contact, react with catalyzer, and reaction oil gas and mixture of catalysts upwards flow along wall.Reactant flow in the interior pipe is converged, is reacted in the ingress of convergence tube 4 and from the regenerator in the annular reaction space between interior pipe 2 and the outer tube 3, and enters settling vessel 12 through convergence tube, gas-solid sharp separation equipment.In settling vessel, reaction oil gas is separated with the catalyzer of reaction back carbon deposit.Reaction oil gas enters subsequent separation system 14, further is separated into various products.Reacted catalyzer falls into stripper 13, the entrained reaction oil gas of stripping catalyst under the effect of water vapour.Catalyzer behind the stripping is sent into revivifier 15 coke burning regenerations, and the catalyzer Returning reactor after the regeneration recycles.
Main operational condition and product distribute referring to table 3.As can be seen from Table 3, when based on the low-carbon alkene of propylene during as the main purpose product, the present invention can make ethene, propylene and butylene productive rate reach 4.79 heavy %, 24.01 heavy % and 15.28 heavy % respectively under lower dry gas and coke yield.
The present embodiment explanation: with the heavy petroleum hydrocarbon is raw material, adopts relay cracking method provided by the invention can obtain higher yield of light olefins such as ethene.
Main testing sequence is as follows: as shown in Figure 4, regenerator enters the interior pipe 2 of canular reactor with agent entering through two way and the annular reaction space between interior pipe 2 and the outer tube 3 respectively through catalyst inlet pipe 21 and 22, and upwards flows under the effect of pre-lifting medium.The catalyzer of pipe accounts for 50% of total catalyst in flowing into, and the catalyzer that flows into annular space accounts for 50%.Hydrocarbon oil crude material injects the interior pipe of this reactor respectively through nozzle 8, contact, react with catalyzer, and reaction oil gas and mixture of catalysts upwards flow along wall.Reactant flow in the interior pipe is converged, is reacted in the ingress of convergence tube 4 and from the regenerator in the annular reaction space between interior pipe 2 and the outer tube 3, and enters settling vessel 12 through convergence tube, gas-solid sharp separation equipment.In settling vessel, reaction oil gas is separated with the catalyzer of reaction back carbon deposit.Reaction oil gas enters subsequent separation system 14, further is separated into various products.Reacted catalyzer falls into stripper 13, the entrained reaction oil gas of stripping catalyst under the effect of water vapour.Catalyzer behind the stripping is sent into revivifier 15 coke burning regenerations, and the catalyzer Returning reactor after the regeneration recycles.
Main operational condition and product distribute referring to table 3.As can be seen from Table 3, when based on the low-carbon alkene of ethene during as the main purpose product, the present invention can make ethene, propylene and butylene productive rate reach 27.63 heavy %, 17.62 heavy % and 5.06 heavy % respectively.Table 1
Table 2
* be lytic activity index table 3
*Total lighter hydrocarbons liquid receipts=yield of liquefied gas+yield of gasoline+diesel yield
| The stock oil title | Grand celebration VGO mixes 30%VR |
| Density (20 ℃), g/cm 3Refractive index (70 ℃) kinematic viscosity, mm 2/ s, 80 ℃ of 100 ℃ of condensation points, ℃ aniline point, ℃ carbon residue, heavy % | ????0.8881 ????1.4784 ????31.88 ????18.09 ????＞50 ????112.9 ????2.7 |
| Four components, heavy % stable hydrocarbon aromatic hydrocarbons gum asphalt | ? ????62.1 ????25.2 ????12.6 ????0.1 |
| Elementary composition, heavy % C H S N Br, gBr/100g | ? ????85.74 ????13.01 ????0.13 ????0.20 ????2.8 |
| Metal content, ppm Fe Ni Cu V Na | ? ????2.3 ????3.0 ????＜0.1 ????0.1 ????2.6 |
| Boiling range, the | ? ????339 ????388 ????421 ????473 ????526 |
| Characterization factor | ????12.7 |
| The catalyzer title | ????RMG | ????CIP-1 | ????CEP |
| Chemical constitution, m% Al 2O 3????Na 2O physical properties specific surface area, m 2/ g pore volume, cm 3/ g tap density, g/cm 3Abrasion index, the m%/h size composition, v% 0～20 μ m 20～40 μ m 40～80 μ m＞80 μ m hydrothermal aging condition aging temperatures, ℃ digestion time, h is aging, and the back is active *，％ | ????42.2 ????0.19? ? ????206 ????0.22 ????0.81 ????1.4? ? ????2.6 ????10.3 ????51.6 ????35.5? ? ????800 ????17 ????69 | ????52.0 ????0.09? ? ????210 ????0.30 ????0.80 ????1.6? ? ????5.2 ????20.4 ????61.8 ????12.6? ? ????800 ????17 ????43* | ????46.3 ????0.04? ? ????152 ????0.24 ????0.86 ????0.91? ? ????3.6 ????13.7 ????42.9 ????39.8? ? ????820 ????23 ????53* |
| Test number | Embodiment 1 | | |
| The main operational condition of catalyzer: interior pipe inlet amount, the g/h raw material preheating temperature, ℃ temperature of reaction, ℃ agent-oil ratio reaction times, the s atomized water, heavy % regeneration temperature, ℃ convergence tube temperature of reaction, ℃ agent-oil ratio reaction times, the s water-oil ratio, heavy % | ????RMG ? ? ????1108 ????290 ????495 ????5.5 ????1.62 ????5.8 ????663 ? ????515 ????7.9 ????1.86 ????5.8 | ????CIP-1 ? ? ????490 ????290 ????530 ????5.8 ????1.58 ????20.1 ????710 ? ????580 ????14.5 ????1.56 ????22.8 | ????CEP ? ? ????363 ????290 ????620 ????15.7 ????1.47 ????30.0 ????845 ? ????650 ????31.4 ????1.73 ????36.7 |
| Material balance, heavy % dry gas liquefied gas gasoline, diesel heavy oil coke amounts to | ? ????3.03 ????31.69 ????44.38 ????10.55 ????4.96 ????5.39 ????100.00 | ? ????9.50 ????46.03 ????26.15 ????8.42 ????3.22 ????6.88 ????100.00 | ? ????41.15 ????26.08 ????16.12 ????4.73 ????1.54 ????10.38 ????100.00 |
| Transformation efficiency, the total lighter hydrocarbons liquid of heavy % is received *, heavy % ethene, heavy % propylene, heavy % butylene, heavy % | ????84.49 ????86.62 ????1.24 ????11.42 ????13.07 | ????88.36 ????80.60 ????4.79 ????24.01 ????15.28 | ????93.73 ????46.93 ????27.63 ????17.62 ????5.06 |
Claims (13)
1, a kind of method for catalyzing and cracking petroleum hydrocarbon in relaying mode is characterized in that this method may further comprise the steps:
(1) regenerator enters the bottom of double tube reactor through the catalyst inlet pipe, and upwards flows under the effect of pre-lifting medium, and the regenerators of 20～80 heavy % flow into interior pipe; And the catalyzer of rest part enter in the annular reaction space between pipe and the outer tube, and under the pre-effect that promotes medium, continue upwards to flow;
(2) hydrocarbon oil crude material injects the interior pipe of this reactor, contacts, reacts with wherein catalyzer, and reactant flow upwards flows along wall;
(3) in the convergence tube ingress of this reactor, the reactant flow in the interior pipe with converge, react from annular reaction spatial regenerator, and enter in the gas-solid sharp separation equipment through convergence tube, make reaction oil gas and reaction afterwards the catalyzer of carbon deposit be separated;
(4) reaction oil gas is sent into subsequent separation system, and reacted catalyzer through stripping, regeneration after, Returning reactor recycles.
2, according to the method for claim 1, it is characterized in that described reactor mainly comprises with lower member: regenerator inlet tube (1), interior pipe (2), outer tube (3), convergence tube (4), promote distribution rings (5), (6) and (7) and feed nozzle (8) and (9) in advance; Wherein, interior pipe (2) is coaxial with outer tube (3), and the ratio of interior pipe cross sectional area of tube core and inner and outer pipes annular space cross-sectional area is 1: 0.1～10; The lower end of interior pipe (2) is positioned at regenerator inlet top, and interior length of tube accounts for 10～70% of this total reactor length; One end of convergence tube (4) links to each other with outer tube (3) upper end, and the other end links to each other with gas-solid separation equipment (11), and convergence tube (4) is 1: 0.2～0.8 with the ratio of the cross-sectional area of interior pipe (2); Pre-lifting distribution rings (5), (6) and (7) lay respectively at the bottom of this reactor, interior pipe and outer tube.
3, according to the method for claim 1, it is characterized in that described reactor mainly comprises with lower member: catalyst inlet pipe (21) and (22), interior pipe (2), outer tube (3), convergence tube (4), promote distribution rings (5) and (7) and feed nozzle (8) and (9) in advance; Wherein, interior pipe (2) is coaxial with outer tube (3), and the ratio of interior pipe cross sectional area of tube core and inner and outer pipes annular space cross-sectional area is 1: 0.1～10; Catalyst inlet pipe (21) links to each other with the lower end of interior pipe (2), and interior length of tube accounts for 10～70% of this total reactor length; The distance of outer tube (3) lower end to interior pipe (2) lower end accounts for 5～20% of this total reactor length, and catalyst inlet pipe (22) links to each other with the lower end of outer tube (3); One end of convergence tube (4) links to each other with outer tube (3) upper end, and the other end links to each other with gas-solid separation equipment (11), and convergence tube (4) is 1: 0.2～0.8 with the ratio of the cross sectional area of tube core of interior pipe (2); The bottom of the annular space in pre-lifting distribution rings (5) and (7) lays respectively between pipe and the inner and outer pipe; The bottom of pipe and outer tube in feed nozzle (8) and (9) lay respectively at.
4,, it is characterized in that the described catalyzer that enters double tube reactor through the catalyst inlet pipe is regenerator or cooled regenerator according to the method for claim 1.
5, according to the method for claim 1 or 4, it is characterized in that described activity of such catalysts component can be selected from Y type or HY type zeolite, the ultrastable Y that contains or do not contain rare earth and/or phosphorus, the ZSM-5 series zeolite that contains or do not contain rare earth and/or phosphorus or supersiliceous zeolite, β zeolite, the ferrierite with five-membered ring structure a kind of, two or three.
6,, it is characterized in that containing in the described catalyzer ZSM-5 series zeolite of 0.5～35 heavy % or other supersiliceous zeolite with five-membered ring structure according to the method for claim 5.
7,, it is characterized in that the hydrocarbon oil crude material of pipe in the described injection is selected from: the mixture of one or more of time processing gasoline fraction, secondary processing of gasoline cut, time processing diesel oil distillate, secondary processing diesel oil cut, straight-run gas oil, wax tailings, deasphalted oil, hydrofined oil, hydrocracking tail oil, decompressed wax oil, vacuum residuum or long residuum according to the method for claim 1.
8,, it is characterized in that the hydrocarbon oil crude material of pipe in the described injection is selected from: the mixture of one or more of straight-run gas oil, wax tailings, deasphalted oil, hydrofined oil, hydrocracking tail oil, decompressed wax oil, vacuum residuum or long residuum according to the method for claim 7.
9, according to the method for claim 1, it is characterized in that described hydrocarbon oil crude material is as follows at the reaction conditions of interior pipe: 480～700 ℃ of temperature of reaction, reaction pressure 0.1～0.6MPa, agent-oil ratio 3～30, oil gas are 1.0～10 seconds, catalyzer with temperature before hydrocarbon ils contacts in the residence time of interior pipe is 620～800 ℃, atomizing steam 1～30 heavy %.
10, according to the method for claim 9, it is characterized in that described hydrocarbon oil crude material is as follows at the reaction conditions of interior pipe: 500～680 ℃ of temperature of reaction, reaction pressure 0.2～0.4MPa, agent-oil ratio 4～25, oil gas are 1.5～5.0 seconds, catalyzer with temperature before hydrocarbon ils contacts in the residence time of interior pipe is 640～750 ℃, atomizing steam 2～25 heavy %.
11, according to the method for claim 1, it is characterized in that described hydrocarbon ils at the reaction conditions of convergence tube is: 490～720 ℃ of temperature of reaction, reaction pressure 0.1～0.6MPa, agent-oil ratio 4～40, the residence time of oil gas in convergence tube are 0.5～10 second, water vapour and the ratio of feed weight is 3～45 heavy %.
12, according to the method for claim 11, it is characterized in that described hydrocarbon ils at the reaction conditions of convergence tube is: 500～700 ℃ of temperature of reaction, reaction pressure 0.2～0.4MPa, agent-oil ratio 5～30, the residence time of oil gas in convergence tube are 1.0～5 seconds, water vapour and the ratio of feed weight is 5～35 heavy %.
13, according to the method for claim 1, it is characterized in that the gas superficial linear speed of described interior pipe is 0.3～6.0m/s, the gas superficial linear speed of the annular space between the inner and outer pipe is 0.2～8.0m/s.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011342692A CN1184282C (en) | 2001-10-30 | 2001-10-30 | Method for catalyzing and cracking petroleum hydrocarbon in relaying mode |
| JP2002249000A JP4412886B2 (en) | 2001-08-29 | 2002-08-28 | Catalytic cracking of petroleum hydrocarbons |
| US10/229,155 US20030116471A1 (en) | 2001-08-29 | 2002-08-28 | Catalytic cracking process of petroleum hydrocarbons |
| FR0210720A FR2829143B1 (en) | 2001-08-29 | 2002-08-29 | PROCESS FOR CATALYTIC CRACKING OF PETROLEUM HYDROCARBONS |
Applications Claiming Priority (1)
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| CNB011342692A CN1184282C (en) | 2001-10-30 | 2001-10-30 | Method for catalyzing and cracking petroleum hydrocarbon in relaying mode |
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| CN1184282C CN1184282C (en) | 2005-01-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453502A (en) * | 2010-10-26 | 2012-05-16 | 中国石油化工股份有限公司 | Conversion method for hydrocarbon oil |
| CN102453501A (en) * | 2010-10-26 | 2012-05-16 | 中国石油化工股份有限公司 | Hydrocarbon oil conversion method |
| CN103974773A (en) * | 2011-12-12 | 2014-08-06 | 环球油品公司 | Process and apparatus for mixing two streams of catalyst |
-
2001
- 2001-10-30 CN CNB011342692A patent/CN1184282C/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453502A (en) * | 2010-10-26 | 2012-05-16 | 中国石油化工股份有限公司 | Conversion method for hydrocarbon oil |
| CN102453501A (en) * | 2010-10-26 | 2012-05-16 | 中国石油化工股份有限公司 | Hydrocarbon oil conversion method |
| CN102453502B (en) * | 2010-10-26 | 2014-01-15 | 中国石油化工股份有限公司 | Conversion method for hydrocarbon oil |
| CN103974773A (en) * | 2011-12-12 | 2014-08-06 | 环球油品公司 | Process and apparatus for mixing two streams of catalyst |
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| Publication number | Publication date |
|---|---|
| CN1184282C (en) | 2005-01-12 |
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