CN201482464U - Reforming catalyst stripper - Google Patents
Reforming catalyst stripper Download PDFInfo
- Publication number
- CN201482464U CN201482464U CN2009201772297U CN200920177229U CN201482464U CN 201482464 U CN201482464 U CN 201482464U CN 2009201772297 U CN2009201772297 U CN 2009201772297U CN 200920177229 U CN200920177229 U CN 200920177229U CN 201482464 U CN201482464 U CN 201482464U
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- baffle
- water conservancy
- conservancy diversion
- guide vane
- stripper
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Abstract
The utility model relates to a reforming catalyst stripper. A barrel body is internally provided with a stripping steam distributor and at least two-stage stripping sections, the stripping section is baffle-type or combined-type of baffle and guide filler, gas passages are arranged on a conical baffle and an annular baffle, and a horizontal grate is arranged in an annular space between the conical baffle and the inner wall of the barrel body. In the baffle and guide filler combined structure of the stripping section, the guide filler section and the baffle section are interlaced in the space of the stripping section along the axial direction of the barrel body, and the guide filler unit is a splayed or square guide vane. In the utility model, as the horizontal grate is arranged on the baffle, the gas-solid exchange is reinforced, and the back-mixing of particles and formation of particles and air mass are prevented; as the gas passages are arranged on the conical baffle and the annular baffle, the steam quantity required for achieving the general stripping effect is reduced, and the energy consumption is reduced; the gas-solid contact mass transfer effect is enhanced through the use of the guide filler; and the flexibility of the project implementation is improved through the multiple choices of the technical scheme.
Description
Technical field
The utility model relates to the petrochemical technology field, particularly relates to a kind of catalytic converting catalyst stripper.
Background technology
At petrochemical industry, often to carry out stripping, with the foreign gas of removing solid particle absorption, carrying secretly to solid particle.For example in hydrocarbon raw material fluidized catalytic conversion device settler, when reaction finished, the catalyst after gas solid separation was still carried part oil gas secretly, cause the green coke amount to increase, light oil yield descends, and to this, often adopts the way of steam stripping that the oil gas in the catalyst is replaced.Result of study shows, if displace whole oil gas from catalyst, it is about 1/3rd that amount of coke can reduce, and the hydrogen-carbon ratio in the coke can reduce to 6%, and present application technology still has suitable distance apart from this target.
The contact effect of gas-solid two-phase directly affects oil gas and is replaced efficient with desorption in the stripper, and gas-solid contact effect is mainly by the stripper structures shape.Traditional catalyst stripping equipment is to add the herringbone baffle plate or dish baffle strengthens Srteam Stripping effect in stripping section, but these two kinds of stripping baffles structures also exist catalyst distribution inequality, the local problems such as bridge formation of losing fluidization and causing thus in operation except steam stripping efficiency is low.In order to prevent that catalyst from walking short circuit, Uop Inc. has set up perforate and adapter on outer baffle and the skirtboard in stripper, in order to strengthen mass transfer; The stripper baffle forms of Mobil company and UOP substantially roughly the same, but fine structure is different on the inner and outer ring baffle plate.Added many triangle swivel plates as the US5910240 patent on the inner and outer ring baffle plate, the catalyst that flows downward is had the rotation guide functions, vapour is affixed to be touched to improve; The US5549814 patent has proposed multilayer grid inner parts structure, and every layer of grid arranged as bicycle spoke, has window on the every spoke, so that the gas-solid exchange; The stripping apparatus of the Mobil company of US5531884 patent disclosure vertically on interior ring baffle plate and outer shroud baffle plate offers a plurality of catalyst down-comers, for catalyst provides additional passage.Chinese patent ZL98250779.8 is provided with perforate on the baffle plate of existing stripper, make the catalyst of the perforate of flowing through further fill the cavity of baffle plate below downwards, increases the gas-solid contact area.More than these are mainly reflected in the baffle plate part to the comprehensive point of improvement of stripper plant.
Catalyst is moved down in stripping apparatus and contact by the baffle plate that uses perpendicular separation with the stripping medium counter flow, steam stripping efficiency is improved, increase contacting of catalyst and stripping medium and move horizontally catalyst, can from catalyst, go out more hydrocarbon by stripping.ZL01212424.9 is provided with distribution plate below the perforate of Internal baffle and outer shroud baffle plate, the solid-phase catalyst that flows downward flows into distribution plate by perforate, arrives the baffle plate below after quadratic distribution, has filled the cavity of baffle plate below, has increased the gas-solid contact area; ZL200420075014.1 proposes interlaced arrangement cone disk type stripping baffles structure, arranges the deflector of two-layer perforated panel or cell structure between multilayer stripping section baffle plate, to reduce the back-mixing of catalyst; The design of the Flapper type stripping of ZL200680052721.0 has radially the downspout that stretches out from the central shaft of stripping part, and its structure can guarantee the moving horizontally of catalyst of leap baffle surface.
In recent years, novel patent design is with the inner member replacement ring baffle in the past that is similar to grid or structured packing, for example the patent US5716585 of Total company adopts multilayer corrugated plate filler as the stripper inner member, and every layer of filler is made up of a plurality of corrugated platings, leaves the spatial domain between each layer; The cellular construction of the structured packing of the patent US6224833 of Koch-Glitsch company is the tabular grid that a kind of centre has mutual cross mesh, and the placement orientation of these steel plates and stripper axis structure have a certain degree; ZL01128770.5 uses the stripper that is provided with at least two sections packing layers, and filler is the screen filler that is crossed as rhombus, diamond passages and stripper axially parallel; Be provided with one or more layers of packing layer in the ZL200410083892.2 stripper, the inner member that constitutes described packing layer comprises the auxiliary guide vane more than two and two major flow blades that are the splayed configuration setting of fixedlying connected with auxiliary guide vane.Adopt distribution that structured packing can improve gas phase media and catalyst significantly and contact, thereby can obviously improve steam stripping efficiency.
Though the catalytic converting catalyst stripper of existing these structures has to a certain degree been improved steam stripping efficiency, also exists efficient not high, steam consumption is big, has the defectives such as formation of back-mixing and the particle or the big air mass of particle sometimes.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of catalytic converting catalyst stripper of novel structure on the catalyst stripping Equipment Foundations of existing public technology and use.
For reaching above-mentioned purpose, the utility model adopts following technical scheme:
A kind of catalytic converting catalyst stripper, comprise cylindrical shell, be provided with stripped vapor distributor and two-stage stripping section at least in the cylindrical shell, stripping section is baffle-type or baffle plate water conservancy diversion stuffing composite, it is characterized in that: described baffle-type structure comprises conical baffled and ring baffle, conical baffled and ring baffle is provided with the gas passage, and the annular space between conical baffled and cylinder inboard wall is provided with horizontal grate.
A kind of catalytic converting catalyst stripper of the present utility model, its optimized technical scheme can be: in the described stripping section baffle plate water conservancy diversion stuffing composite structure, the water conservancy diversion packing section is provided with multilayer water conservancy diversion filler, alternately arranges along the tubular axis direction in the stripping section space with the baffle plate section.
A kind of catalytic converting catalyst stripper of the present utility model, its optimized technical scheme can be: in the described stripping section baffle plate water conservancy diversion stuffing composite structure, water conservancy diversion filler unit structure is splayed or square guide vane.
A kind of catalytic converting catalyst stripper of the present utility model, the further improved technical scheme of above-mentioned optimized technical scheme can be: described stripping section baffle plate water conservancy diversion stuffing composite structure, the cellular construction of water conservancy diversion filler is the splayed guide vane, every layer of water conservancy diversion filler comprises the staggered up and down stacked said units structure of at least two groups, each group comprises the cellular construction that plural along continuous straight runs is arranged in parallel, and is fixedly connected between the adjacent cellular construction.The technical scheme that technique scheme is further concrete is that described splayed guide vane angle angle is 30-150 °.
A kind of catalytic converting catalyst stripper of the present utility model, the further improved technical scheme of above-mentioned optimized technical scheme can be: described stripping section baffle plate water conservancy diversion stuffing composite structure, the cellular construction of water conservancy diversion filler is for there being certain thickness square guide vane, the mutual skewed crossing of each square guide vane forms rectangle or diamond structure, and two-layer up and down square guide vane is staggered stacked.The technical scheme that technique scheme is further concrete is that described square guide vane angle of the crossing angle is 30-150 °.
Above-mentioned further improved technical scheme also can make up mutually, thereby reaches better technique effect.
A kind of catalytic converting catalyst stripper of the present utility model, its optimized technical scheme can also be: the baffle-type structure comprises conical baffled and ring baffle, on conical baffled and ring baffle, be provided with the gas passage, the gas passage is round hole or nozzle, along the radially even circumference of baffle plate.
A kind of catalytic converting catalyst stripper of the present utility model, its optimized technical scheme can also be: replace the conical baffled and ring baffle of arranging multiplayer along the tubular axis direction in cylindrical shell, be provided with 1-20 exhaust body path on conical baffled and ring baffle, the annular space between conical baffled lower edge or middle part and cylinder inboard wall is provided with horizontal grate.
In the utility model, it is descending that the catalyst that has oil gas or a flue gas enters cylindrical shell from stripper cylindrical shell upper end, it is up that steam enters cylindrical shell from the cylindrical shell lower end, steam and catalyst stripping section comprehensive engagements at different levels in stripper in the up process, displace oil gas or flue gas in the catalyst, and it is up until discharging from the cylindrical shell upper end to carry oil gas or flue gas.
Adopt catalytic converting catalyst stripper of the present utility model, steam stripping efficiency is reached more than 98%.
Compared with prior art, catalytic converting catalyst stripper provided by the utility model has following beneficial effect:
At first, improve by baffle arrangement existing baffle plate water conservancy diversion stuffing composite stripper, annular space between conical baffled lower edge or middle part and cylinder inboard wall is provided with horizontal grate, dwindled the rising bubble diameter, strengthen the gas-solid exchange, prevented the formation of back-mixing and the particle or the big air mass of particle simultaneously;
Second, at existing baffle plate water conservancy diversion stuffing composite stripper, on conical baffled and ring baffle, the gas passage nozzle is set, the stripped vapor that accumulates in conical baffled, ring baffle below is risen equably, repeatedly reallocation by each layer nozzle, increased the contacting efficiency of steam and catalyst, can not only reduce quantity of steam required when reaching common Srteam Stripping effect, cut down the consumption of energy, and can be when the stripped vapor amount remains unchanged, propose more oil gas from catalyst Shanghai Automobile Factory, improve the product organic efficiency;
The 3rd, water conservancy diversion filler unit architecture advances to existing baffle plate water conservancy diversion stuffing composite stripper is splayed or square guide vane, can make catalyst change flow direction in the process of flowing from top to bottom, be the part catalyst when guide vane flows down, flow to the both sides of blade simultaneously, the horizontal movement that produces can reduce the beds diameter, strengthens gas-solid contact mass transfer effect; The use of water conservancy diversion filler makes stripped vapor and catalyst granules be subdivided into the little gas-solid subregion of single size in the flow-guiding channel of filler, has improved the gas-solid contacting efficiency;
The 4th, in stripper, be divided into the above stripping section of two-stage, can realize by conical baffled, the ring baffle of setting up grid, nozzle, also can realize by baffle plate water conservancy diversion stuffing composite structure, improved the flexibility of engineering construction greatly.
Description of drawings
Fig. 1: baffle-type catalytic converting catalyst stripper structural representation of the present utility model.
Fig. 2: baffle plate water conservancy diversion stuffing composite catalytic converting catalyst stripper structural representation of the present utility model.
Fig. 3-4: stripper baffle plate A-A of the present utility model to, B-B to cut-away view.
Fig. 5-7: the C-C that stripper water conservancy diversion filler unit structure of the present utility model is the splayed guide vane is to cut-away view and guide vane stereogram.
Fig. 8-10: the C-C that stripper water conservancy diversion filler unit structure of the present utility model is square shape guide vane is to cut-away view and guide vane stereogram.
Figure 11: the catalyst, the stripping media flow direction schematic diagram that adopt baffle plate water conservancy diversion stuffing composite catalytic converting catalyst stripper shown in Figure 2.
Number description: 10 settler space; 20 cylindrical shells; 21 catalyst (arrow is represented to flow downward); 30 is conical baffled; 31 nozzles; 32 grids; 40 ring baffles; 41 nozzles; 50 water conservancy diversion fillers; 51 splayed guide vanes; 52 square guide vanes; 60 stripped vapor distributors; 61 stripped vapors (arrow is represented upwards to flow); α splayed guide vane angle; The square guide vane angle of the crossing of β.
The specific embodiment
Describe the technical solution of the utility model in detail below in conjunction with accompanying drawing, but protection domain of the present utility model includes, but are not limited to this:
Fig. 1 is a baffle-type catalytic converting catalyst stripper structural representation of the present utility model, the baffle-type stripper is arranged in the stripping section of settler space below 10, and this stripper comprises: cylindrical shell 20, conical baffled 30, ring baffle 40, grid 32, nozzle 31 and 41, stripped vapor distributor 60.Concrete structure is: stripper is formed along axially alternately arranging of cylindrical shell 20 by multilayer conical baffled 30 and ring baffle 40, its A-A of conical baffled 30 to cutaway view as shown in Figure 3, the radially nozzle 31 of even circumference of 1-20 row is set on 30, annular space between conical baffled 30 lower edges and cylindrical shell 20 inwalls is provided with horizontal grate 32, the B-B of ring baffle 40 is provided with the radially even nozzle 41 of circumference of 1-20 row on 40 to cutaway view as shown in Figure 4.Distance between each layer conical baffled 30 and the ring baffle 40, conical baffled 30 with the size of ring baffle top nozzle row number and hole area, can require and the size in stripper space be selected to arrange according to process conditions.
The stripping process of stripper shown in Figure 1 is: need carry out steam stripped reclaimable catalyst and be entered by the settler space 10 on stripper top, pass through conical baffled 30 successively, grid 32, ring baffle 40 is S-shaped along under the gravity current, from the stripped vapor of stripped vapor distributor 60 by conical baffled 30, nozzle 31 on the ring baffle 40,41 or the ejection of the slit of grid 32, by controlling suitable nozzle row number, nozzle diameter and stripped vapor pressure, reclaimable catalyst can not pass nozzle, have only steam can pass through nozzle, thereby catalyst and stripped vapor conical baffled 30 and ring baffle 40 on be staggered counter current contacting, through repeatedly contacting stripping, finish steam stripped catalyst and flowed out by the stripper bottom, the steam that carries oil gas flows out from stripper top.
Fig. 2 is a baffle plate water conservancy diversion stuffing composite catalytic converting catalyst stripper structural representation of the present utility model, this combined type stripping device can be divided into two parts: baffle plate section and water conservancy diversion packing section, alternately arrange along cylindrical shell 20 by multilayer baffle plate 30,40 and multilayer water conservancy diversion filler 50 respectively.The detailed structure of conical baffled 30, ring baffle 40, grid 32 respectively as shown in Figure 3-4; Water conservancy diversion filler 50 and plate washer 30,40 alternately arrange along cylindrical shell 20, its cellular construction is splayed or square guide vane, Fig. 5-the 7th, the C-C when stripper water conservancy diversion filler unit structure 50 is splayed guide vane 51 is to cut-away view and guide vane stereogram, every layer of water conservancy diversion filler comprises the staggered up and down stacked said units structure 51 of at least two groups, as E-E to shown in, each group comprises the cellular construction 51 that plural along continuous straight runs is arranged in parallel, fixedly connected between the adjacent cellular construction, splayed guide vane 51 angle α are 30-150 °, its design can guarantee that catalyst when guide vane 51 flows down, can produce horizontal movement simultaneously; Fig. 8-the 10th, the C-C when stripper water conservancy diversion filler unit structure is square guide vane 52 is to cut-away view and guide vane stereogram, square guide vane 52 thickness are generally more than 5mm, to guarantee enough mechanical strengths, the mutual skewed crossing of each square guide vane forms rectangle or diamond structure, its angle of the crossing β is 30-150 °, and two-layer up and down square guide vane is staggered stacked; Each layer filler generally is made into the filler that regular shape is easy to load.This combined type stripping device can be regulated structure flexibly according to the difference of process conditions, the concrete size of each stripping section, nozzle quantity etc. can require to determine according to apparatus structure and stripping, as long as convenient construction, installation do not have specific (special) requirements under the prerequisite that satisfies the stripping requirement.
Figure 11 is for adopting the catalyst of baffle plate water conservancy diversion stuffing composite catalytic converting catalyst stripper shown in Figure 2, stripping media flow direction schematic diagram, catalyst 21 enters the catalytic conversion steam stripping device from settler space 10, S-shaped from top to bottom suitable gravity effect flows through conical baffled 30, grid 32, ring baffle 40, water conservancy diversion filler 50, with from bottom to top by the nozzle on the ring baffle 40 41, nozzle 31 on conical baffled 30, slit on the grid 32, stripped vapor 61 adverse currents of ejection such as water conservancy diversion filler 50 paths such as grade are conflicted, through repeatedly steam stripped catalyst 21 outflow bottom stripper, the stripped vapor that carries oil gas upwards enters settler space 10.
The utility model can be used as the stripper of various catalytic convention designs, with oil gas or the flue gas that removes catalyst entrainment; When being used for stripping catalyst entrained oil gas, the design situation of riser reactor or outer riser reactor in stripper of the present utility model is applicable to simultaneously.
Claims (9)
1. catalytic converting catalyst stripper, comprise cylindrical shell, be provided with stripped vapor distributor and two-stage stripping section at least in the cylindrical shell, stripping section is baffle-type or baffle plate water conservancy diversion stuffing composite, it is characterized in that: described baffle-type structure comprises conical baffled and ring baffle, conical baffled and ring baffle is provided with the gas passage, and the annular space between conical baffled and cylinder inboard wall is provided with horizontal grate.
2. a kind of catalytic converting catalyst stripper as claimed in claim 1, it is characterized in that: in the described stripping section baffle plate water conservancy diversion stuffing composite structure, the water conservancy diversion packing section is provided with multilayer water conservancy diversion filler, alternately arranges along the tubular axis direction in the stripping section space with the baffle plate section.
3. a kind of catalytic converting catalyst stripper as claimed in claim 1 is characterized in that: in the described stripping section baffle plate water conservancy diversion stuffing composite structure, water conservancy diversion filler unit structure is splayed or square guide vane.
4. as claim 2 or 3 described a kind of catalytic converting catalyst strippers, it is characterized in that: described stripping section baffle plate water conservancy diversion stuffing composite structure, the cellular construction of water conservancy diversion filler is the splayed guide vane, every layer of water conservancy diversion filler comprises the staggered up and down stacked said units structure of at least two groups, each group comprises the cellular construction that plural along continuous straight runs is arranged in parallel, and is fixedly connected between the adjacent cellular construction.
5. a kind of catalytic converting catalyst stripper as claimed in claim 4 is characterized in that: described splayed guide vane angle angle is 30-150 °.
6. as claim 2 or 3 described a kind of catalytic converting catalyst strippers, it is characterized in that: described stripping section baffle plate water conservancy diversion stuffing composite structure, the cellular construction of water conservancy diversion filler is for there being certain thickness square guide vane, the mutual skewed crossing of each square guide vane forms rectangle or diamond structure, and two-layer up and down square guide vane is staggered stacked.
7. a kind of catalytic converting catalyst stripper as claimed in claim 6 is characterized in that: described square guide vane angle of the crossing angle is 30-150 °.
8. a kind of catalytic converting catalyst stripper as claimed in claim 1, it is characterized in that: the baffle-type structure comprises conical baffled and ring baffle, be provided with the gas passage on conical baffled and ring baffle, the gas passage is round hole or nozzle, along the radially even circumference of baffle plate.
9. a kind of catalytic converting catalyst stripper as claimed in claim 1, it is characterized in that: in cylindrical shell, replace the conical baffled and ring baffle of arranging multiplayer along the tubular axis direction, be provided with 1-20 exhaust body path on conical baffled and ring baffle, the annular space between conical baffled lower edge or middle part and cylinder inboard wall is provided with horizontal grate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201772297U CN201482464U (en) | 2009-08-27 | 2009-08-27 | Reforming catalyst stripper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201772297U CN201482464U (en) | 2009-08-27 | 2009-08-27 | Reforming catalyst stripper |
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|---|---|
| CN201482464U true CN201482464U (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201772297U Expired - Fee Related CN201482464U (en) | 2009-08-27 | 2009-08-27 | Reforming catalyst stripper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559239A (en) * | 2010-12-30 | 2012-07-11 | 中国石油天然气集团公司 | Cut-over ultrashort contact rotational flow reactor |
| CN111565835A (en) * | 2017-11-30 | 2020-08-21 | 德希尼布工艺技术股份有限公司 | Multi-directional apparatus for steam-solid mixing |
| CN114425278A (en) * | 2020-10-15 | 2022-05-03 | 中国石油化工股份有限公司 | Device and method for producing low-carbon olefin and application |
-
2009
- 2009-08-27 CN CN2009201772297U patent/CN201482464U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559239A (en) * | 2010-12-30 | 2012-07-11 | 中国石油天然气集团公司 | Cut-over ultrashort contact rotational flow reactor |
| CN111565835A (en) * | 2017-11-30 | 2020-08-21 | 德希尼布工艺技术股份有限公司 | Multi-directional apparatus for steam-solid mixing |
| CN111565835B (en) * | 2017-11-30 | 2023-01-13 | 特恩工艺技术股份有限公司 | Multi-directional apparatus for steam-solid mixing |
| CN114425278A (en) * | 2020-10-15 | 2022-05-03 | 中国石油化工股份有限公司 | Device and method for producing low-carbon olefin and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: QINGDAO JINGRUN PETROCHEMICAL ENGINEERING CO., LTD. Assignor: Shi Baozhen Contract record no.: 2012410000050 Denomination of utility model: Catalytic conversion catalyst stripper Granted publication date: 20100526 License type: Exclusive License Record date: 20120515 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: QINGDAO JINGRUN PETROCHEMICAL ENGINEERING CO., LTD. Assignor: Shi Baozhen Contract record no.: 2012410000050 Denomination of utility model: Catalytic conversion catalyst stripper Granted publication date: 20100526 License type: Exclusive License Record date: 20120515 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| DD01 | Delivery of document by public notice |
Addressee: Shi Baozhen Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice |
Addressee: Shi Baozhen Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20160827 |
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| CF01 | Termination of patent right due to non-payment of annual fee |