CN205216812U - Fixed fluidized bed evaluation device - Google Patents
Fixed fluidized bed evaluation device Download PDFInfo
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- CN205216812U CN205216812U CN201520986866.4U CN201520986866U CN205216812U CN 205216812 U CN205216812 U CN 205216812U CN 201520986866 U CN201520986866 U CN 201520986866U CN 205216812 U CN205216812 U CN 205216812U
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Abstract
The utility model relates to a fixed fluidized bed evaluation device mainly is that the present fixed fluidized bed evaluation device of solution can not sweep the problem that the sample was remained by reactor portion after the difference evaluated step collection solid powder sample and evaluate the completion. This fixed fluidized bed evaluation device's reactor from top to bottom comprises upper portion settling section, middle part conversion zone and lower part dispersion section, is connected with the sample collection pipeline in the reactor side, and the one end of sample collection pipeline stretches into reactor portion, and the other end is connected with the through way valve in the reactor outside. The utility model discloses the catalyst powder sample that different evaluation steps were gathered at any time in the realization are simply operated to the accessible, and physicochemical property's such as the specific surface of monitoring sample product under the differential response step, pore volume, long -pending charcoal performance change reaches the remaining sample of the reactor reactor that blows off simultaneously, guarantee the uniformity of reactor sample.
Description
Technical field
The utility model belongs to the catalytic cracking unit of petroleum hydrocarbon, particularly a kind of fixed fluidized bed evaluating apparatus being convenient to residual sample in collection solid powder sample and purge.
Background technology
Fluid catalytic cracking (FCC) is the topmost deep processing operating procedure of heavy oil lighting, can be obtained the product of many high values such as liquefied petroleum gas, pressure naphtha, gasoline by catalytic cracking.No matter be process exploitation, or catalyst preparation, or feedstock oil, catalyst reactivity worth evaluation, all be unable to do without experimental rig.The conventional experimental rig in catalytic cracking field mainly comprises: micro-anti-, fixed fluidized bed, the middle scale riser catalytic cracking unit of light oil micro-reactor, heavy oil etc.The advantages such as wherein, it is low that fixed fluidized bed reaction experiment device has cost, and heat transfer efficiency is high, bed isothermal, and operation and maintenance costs is few, are widely used in catalytic cracking experimental study.
When adopting conventional fixed fluidized bed evaluating apparatus to carry out sample evaluation, generally there is following step, load and unload sample, preheating, atomization, oil-feed, reaction, stripping, (Chen Junwu edits " catalytic cracking process and engineering " second edition in regeneration, Sinopec publishing house, 2005) etc.Simultaneously, in order to better investigate the cracking performance of catalyst sample to oil product, and the specific surface of product under differential responses step, pore volume, the change of the physico-chemical properties such as coking resistivity, need to collect atomization, oil-feed, sample under the different steps such as reaction, in addition, in the sample evaluation procedure of routine, be in the catalyst sample of fluidized state in the reactor, because size distribution is different, when adopting the fluidizing gas of same speed to carry out fluidisation, the catalyst sample fluidizing velocity in the reactor of variable grain size is then inconsistent, so, reactor internal upper part settling section, middle part conversion zone and bottom dispersion section have the sample of variable grain size, and they are different for time of staying in reactor, the degree participating in reaction is also different, the size of sample to catalytic cracking reaction effect that zones of different investigated further by the sample being captured in the zones of different such as settling section in reactor is of great significance.In addition, in order to better simulate the performance of industrial poising agent, or the mechanism of the heavy metals such as the anti-vanadium of Study of Catalyst, need in feedstock oil, add the corresponding heavy metals such as vanadium, then adopt this feedstock oil on fixed fluidized bed device, carry out circulation evaluation, this just requires the performance of multi collect sample characterization sample preventing from heavy metal, more than study and all need to develop a kind of fixed fluidized bed evaluating apparatus that can facilitate collected specimens, to meet the diversified evaluation requirements such as the investigation of example reaction dynamics, catalyst coking resistivity.
In addition, in device reaction device, varigrained sample can be attached to the surface of the inwall of reactor, the outer wall of fluidisation pipeline, the outer wall of feed line and filter respectively, the sample of attachment reaches certain quantity can affect next sample evaluation quality, attachment sample on the filter also can affect the result of use of filter thus the change of the pressure that induces reaction, affect the collimation of response data, so after sample evaluation completes, should the sample of purge internal residual in time, ensure uniformity and the evaluation quality of sample in reactor.
U.S. Patent number USP6069012, China Patent No. CN201310495171.1, China Patent No. CN201310085580.4, China Patent No. CN201210020247.0, China Patent No. CN201310086190.9, the patent documents such as China Patent No. CN01220332.7 disclose a kind of fixed fluidized-bed reactor for FCC tests research respectively, above-mentioned patent document is all carried out adjustment in various degree to the structure of fixed fluidized-bed reactor, but all do not relate to the problem carrying out gathering solid powder sample and carrying out after having evaluated purging under the condition of assess sample different step.
In sum, existing fixed fluidized bed device all can only after completing evaluation, when drawing off all samples, could analyze accordingly sample, and the demand of carrying out purge inside after different reactions steps gathers solid powder sample and evaluated can not be met.
Utility model content
The purpose of this utility model is to overcome the weak point existed in above-mentioned technology, and providing a kind of can gather solid powder sample in differential responses step and carry out the fixed fluidized bed evaluating apparatus of residual sample in purge after having evaluated.
The utility model provides a kind of fixed fluidized bed evaluating apparatus, reactor is from top to bottom by top settling section I, middle part conversion zone II and bottom dispersion section III composition, the top of described reactor is provided with flange 1, flange 1 is provided with thermocouple sheath 2, fluidizing gas pipe 3, reaction oil gas delivery line 4 and feedstock oil oil inlet pipe 7, described thermocouple sheath 2, described fluidizing gas pipe 3, described reaction oil gas delivery line 4 and described feedstock oil oil inlet pipe 7 all pass into described inside reactor through described flange 1, described middle part conversion zone center of inside is provided with strengthening distributor 10, described feedstock oil oil inlet pipe 7 all extends perpendicularly through described flange 1 and described strengthening distributor 10 with described fluidizing gas pipe 3, described reaction oil gas delivery line 4 is connected with the filter 5 of described inside reactor, described filter 5 is fixed on bottom described flange 1, the side of described reactor is connected with sample collection pipeline 6, described inside reactor is stretched in one end of described sample collection pipeline 6, the other end is connected with straight-through valve 8 in described reactor outside.
Above-mentioned fixed fluidized bed evaluating apparatus, is characterized in that, described sample collection pipeline 6 is in the axially distribution 1-5 group of described reactor.
Described fixed fluidized bed evaluating apparatus, is characterized in that, described sample collection pipeline 6 is 3 groups, and described top settling section, described middle part conversion zone, described bottom dispersion section are respectively provided with sample collection pipeline 6 described in a group.
Above-mentioned fixed fluidized bed evaluating apparatus, is characterized in that, described sample collection pipeline 6 is sleeve structure, and described sleeve structure comprises interior pipe 601 and outer tube 602, is sealed between described interior pipe 601 and described outer tube 602 by seal member 11.
Above-mentioned fixed fluidized bed evaluating apparatus, is characterized in that, described seal member 11 adopts thread seal, cutting ferrule to seal or snap ring sealing.
The fixed fluidized bed evaluating apparatus of the one that the utility model provides, sample collection pipeline is axially connected with at reactor, and adopt sleeve structure, this sleeve structure can move up in reactor inside diameter, can according to the needs of research, under evaluation different step, axially and in radial direction catalyst solid powder sample is gathered in reactor, and all samples need not be drawn off, all the other samples be retained in reactor can proceed corresponding research, with this, both catalyst can better have been investigated under different reactions steps, anti-carbon deposit in different conversion zones, pore volume, the performances such as specific surface, assess effectiveness can be improved again, in addition, by external air source (compressed air, nitrogen etc.) object of the inner remaining sample of axial purge can be reached respectively by the straight-through valve be connected with sample collection pipeline, if when sample collection pipeline is sleeve structure, by adjusting the interior pipe length inside in reactor footpath, again it is connected with straight-through valve, then can reach the object of radial purge, thus decrease the residual of the position such as reactor wall and filter sample as far as possible, to ensure in reactor fill the uniformity of sample.In addition, the utility model only need carry out less transformation and just can reach the object gathering solid powder sample under differential responses steps and purge on original fixed fluidized bed device.
Accompanying drawing explanation
The structural representation of the fixed fluidized-bed reactor that Fig. 1 provides for USP6069012.
Fig. 2 is the structural representation of a kind of fixed fluidized bed evaluating apparatus of the utility model.
Reference numeral is: 1-flange, 2-thermocouple sheath, 3-fluidizing gas pipe, 4-reaction oil gas delivery line, 5-filter, 6-sample collection pipeline, 7-feedstock oil oil inlet pipe, 8-straight-through valve, and pipe in 601-, 602-outer tube, 10-strengthens distributor, 11-seal member
Detailed description of the invention
When not conflicting, the feature in the embodiment in the application can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with embodiment.
The utility model provides a kind of fixed fluidized bed evaluating apparatus, reactor is provided with top settling section I from top to bottom, middle part conversion zone II and bottom dispersion section III, the top of reactor is provided with flange 1, flange 1 is provided with thermocouple sheath 2, fluidizing gas pipe 3, reaction oil gas delivery line 4 and feedstock oil oil inlet pipe 7, these components all pass into inside reactor through flange 1, conversion zone center of inside is provided with strengthening distributor 10, feedstock oil oil inlet pipe 7 and fluidizing gas pipe 3 all extend perpendicularly through flange 1 and strengthen distributor 10, reaction oil gas delivery line 4 is connected with the filter 5 of inside reactor, filter 5 is fixed on bottom flange 1, reactor side is connected with sample collection pipeline 6, inside reactor is stretched in one end of sample collection pipeline 6, the other end is connected with straight-through valve 8 in reactor outside.
Described sample collection pipeline 6 axially to distribute 1-5 group at reactor, preferably 3 groups, lays respectively at reactor top settling section, middle part conversion zone, bottom dispersion section.
Described sample collection pipeline 6 is preferably sleeve structure, is sealed between described interior pipe 601 and outer tube 602 by seal member 11.
Described seal member 11 adopts thread seal, cutting ferrule to seal or snap ring sealing.
Before plant running, load a certain amount of catalyst in reactor, catalyst is mainly gathered in the dispersion section of reactor bottom.Fluidizing gas can adopt air or steam, dispersion section is sent into by fluidizing gas pipe, the catalyst be used in fluidized reactor, setting reaction condition, after reaching certain reaction condition, start to carry out oil-feed successively, the steps such as reaction, if need the coking resistivity (gathering the solid powder sample not needing to regenerate) investigating sample, then after stripping completes, do not enter regeneration link, pass into nitrogen fluidisation, open straight-through valve, solid powder sample is gone out by sample collection pipe flow will, then can complete axially different region and (gather settling section as required, conversion zone, dispersion section etc.) sample collection.If when sample collection pipeline is sleeve structure, interior pipe is adjusted to corresponding position and sealed by seal member with outer tube, opening the straight-through valve be connected with interior pipe, just can complete Different Diameter in reactor to solid powder sample collection.After sample collection completes, as other performance of catalyst in reactor pressed powder need be investigated, then only need to continue setting experiment condition to test, and do not need samples all in reactor to draw off completely, finally realize object that is axial in reactor under different step in evaluation procedure, radial zones of different sample collection.
After an evaluation test terminates, most sample has been drawn off from reactor bottom, external air source (compressed air, nitrogen etc.) is accessed respectively reactor axially in different straight-through valve, and then by pipe in adjustment sleeve pipe in reactor inside diameter length upwards, thus reach axial, the radial object purged of inside reactor, blow off the sample remained in reactor reactor, ensure next time assess sample time, the uniformity of sample in reactor.
Claims (5)
1. a fixed fluidized bed evaluating apparatus, it is characterized in that, reactor is from top to bottom by top settling section I, middle part conversion zone II and bottom dispersion section III composition, the top of described reactor is provided with flange (1), flange (1) is provided with thermocouple sheath (2), fluidizing gas pipe (3), reaction oil gas delivery line (4) and feedstock oil oil inlet pipe (7), described thermocouple sheath (2), described fluidizing gas pipe (3), described reaction oil gas delivery line (4) and described feedstock oil oil inlet pipe (7) all pass into described inside reactor through described flange (1), described middle part conversion zone center of inside is provided with strengthening distributor (10), described feedstock oil oil inlet pipe (7) and described fluidizing gas pipe (3) all extend perpendicularly through described flange (1) and described strengthening distributor (10), described reaction oil gas delivery line (4) is connected with the filter (5) of described inside reactor, described filter (5) is fixed on described flange (1) bottom, the side of described reactor is connected with sample collection pipeline (6), described inside reactor is stretched in one end of described sample collection pipeline (6), the other end is connected with straight-through valve (8) in described reactor outside.
2. fixed fluidized bed evaluating apparatus according to claim 1, is characterized in that, described sample collection pipeline (6) is in the axially distribution 1-5 group of described reactor.
3. fixed fluidized bed evaluating apparatus according to claim 2, it is characterized in that, described sample collection pipeline (6) is 3 groups, and described top settling section I, described middle part conversion zone II, described bottom dispersion section III are respectively provided with sample collection pipeline (6) described in a group.
4. fixed fluidized bed evaluating apparatus according to claim 1 and 2, it is characterized in that, described sample collection pipeline (6) is sleeve structure, described sleeve structure comprises interior pipe (601) and outer tube (602), is sealed between described interior pipe (601) and described outer tube (602) by seal member (11).
5. fixed fluidized bed evaluating apparatus according to claim 4, is characterized in that, described seal member (11) adopts the sealing of thread seal, cutting ferrule or snap ring sealing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520986866.4U CN205216812U (en) | 2015-12-02 | 2015-12-02 | Fixed fluidized bed evaluation device |
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| CN201520986866.4U CN205216812U (en) | 2015-12-02 | 2015-12-02 | Fixed fluidized bed evaluation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108854868A (en) * | 2017-05-08 | 2018-11-23 | 神华集团有限责任公司 | Fluidized-bed reactor and its application |
| CN113717747A (en) * | 2020-05-26 | 2021-11-30 | 中国石油天然气股份有限公司 | Catalytic cracking reactor for laboratory |
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2015
- 2015-12-02 CN CN201520986866.4U patent/CN205216812U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108854868A (en) * | 2017-05-08 | 2018-11-23 | 神华集团有限责任公司 | Fluidized-bed reactor and its application |
| CN108854868B (en) * | 2017-05-08 | 2020-11-24 | 神华集团有限责任公司 | Fluidized bed reactor and application thereof |
| CN113717747A (en) * | 2020-05-26 | 2021-11-30 | 中国石油天然气股份有限公司 | Catalytic cracking reactor for laboratory |
| CN113717747B (en) * | 2020-05-26 | 2023-02-28 | 中国石油天然气股份有限公司 | Catalytic cracking reactor for laboratory |
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