CN202683178U - Upper-inlet and lower-outlet type continuous reforming reactor - Google Patents
Upper-inlet and lower-outlet type continuous reforming reactor Download PDFInfo
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- CN202683178U CN202683178U CN 201220300849 CN201220300849U CN202683178U CN 202683178 U CN202683178 U CN 202683178U CN 201220300849 CN201220300849 CN 201220300849 CN 201220300849 U CN201220300849 U CN 201220300849U CN 202683178 U CN202683178 U CN 202683178U
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Abstract
The utility model discloses an upper-inlet and lower-outlet type continuous reforming reactor which comprises a cylinder body, an upper end socket and a lower end socket, wherein the upper end socket and the lower end socket are respectively formed in two ends of the cylinder body and are fixedly connected with the cylinder body to from a sealing structure. The continuous reforming reactor is in a radial structure; a distributor, a gas collecting channel, a gas distributing channel and a catalyst bed layer are arranged in the reactor; and the distributor is connected with a reaction material feeding port. Due to the adoption of a radial structure with smaller pressure drop, the upper-inlet and lower-outlet type continuous reforming reactor disclosed by the utility model can be directly connected with an upper hopper and a lower hopper; reaction materials can continuously finish the reaction through the catalyst radial bed layer with the smaller pressure drop; and a catalyst can continuously enter or exit of the reactor and move in the bed layer, so that the optimization of continuous reforming reaction conditions by a countercurrent moving bed is realized.
Description
Technical field
The utility model relates to the reforming reactor field, furtherly, relates to a kind of upper entering and lower leaving type continuous reforming reactor.
Background technology
The reaction of carrying out in the continuous reforming reactor of petroleum chemical industry is to carry out under the effect of catalyst, the beds that passes through that reaction mass is continuous reacts, and beds is continuous moving from the top down in reactor, and catalyst is wanted the continuous reactor that enters and leave.The characteristics of CONTINUOUS REFORMER require reactor should provide namely in conjunction with two passages of reaction mass and catalyst independently again, meanwhile, and the resistance drop of the internals of reduce reactor and beds again.Therefore, the internal structure of reactor should be able to satisfy this two basic demands simultaneously, and reactor adopts the radially moving bed pattern of thin beds.
The pattern of counter-flow moving bed continuous reforming reactor is different from existing CONTINUOUS REFORMER, the reactor of prior art adopts two or more arranged superposed mostly, and counter-flow moving bed CONTINUOUS REFORMER is reverse conveying at the reaction zone catalyst, reactor must be single layout, require reactor pressure to fall further reduction, and for the sealed reaction thing, each reactor must directly connect in top and the bottom up and down hopper, structurally will satisfy this requirement.
Its catalyst bed layer height of the reactor of prior art is fixed, and the reserve of catalyst in reactor is can not adjusting of fixing; Reaction mass can not so that this part catalyst forms dead band, can not be fully utilized by the partially catalyzed agent below the gas-distributing channel, and easy carbon distribution in the above.
The utility model is in conjunction with the different characteristics of counter-flow moving bed CONTINUOUS REFORMER and prior art, internal structure to reactor is optimized and improves, so that the catalyst inventory in the reactor can be adjusted within the specific limits, and eliminate the catalyst dead band with the catalyst of partial reaction material below gas-distributing channel.
The utility model content
For solving problems of the prior art, the utility model provides a kind of upper entering and lower leaving type continuous reforming reactor, the radial structure that adopts lower resistance to fall, and can directly be connected with the top and the bottom hopper, but the realization response material continuously by the less catalyst of Pressure Drop radially bed finish reaction, the turnover reactor that the catalyst energy is continuous is also mobile in bed, realizes thus the optimization of counter-flow moving bed CONTINUOUS REFORMER reaction condition.
The purpose of this utility model provides a kind of upper entering and lower leaving type continuous reforming reactor.
Comprise: cylindrical shell, top end socket and bottom head, top end socket and bottom head are separately positioned on the two ends of cylindrical shell, are fixedly connected to form the structure of sealing with cylindrical shell;
Described top end socket is sphere or elliposoidal, and the top is provided with reaction mass charging aperture and catalyst charge pipe;
Described bottom head is sphere or elliposoidal, and the bottom is provided with reacting product outlet and catalyst discharge nozzle;
Be provided with baffle plate between described reactor shell and the top end socket, described catalyst charge pipe passes baffle plate and stretches in the interior beds of reactor.
Described reactor is radial structure, is provided with distributor, gas collection road, gas-distributing channel and beds in the reactor;
Distributor coupled reaction material charging aperture,
Described gas collection road is the interior space of central tube of reactor, described central tube upper end closed, and the lower end is connected with reacting product outlet, arrange porose on the center tube wall, the percent opening of central tube is preferably 10 ~ 30%, preferably uses the Johnson Net manufacturing, and the slit between the Johnson Net grating is 0.2～2.0mm.
The enclosed construction of central tube upper end, this structure not only had been used for center seal pipe upper end but also as the support of baffle plate, and can come with the bolt position that is located at differing heights on this enclosed construction the height of controllable register, can change within the specific limits like this loadings of the Height Adjustment catalyst reactor of beds.
Lower end closed is opened wide in described gas-distributing channel upper end;
Described beds is annular, is arranged between gas collection road and the gas-distributing channel.
Described gas-distributing channel is the annular circulation passage that forms between outer screen cloth and the reactor wall,
Described outer screen cloth is and the body concentric tubular structure of reactor cylinder, is enclosed within outside the central tube.
The inner space runner that described gas-distributing channel also can form for a plurality of sector drums with perforate, described sector drum is close to reactor wall along circumferentially arranging continuously;
It is attached to the reactor wall side for the arc of not perforate described sector drum, is the arc of perforate in the beds side, and its percent opening is preferably 10 ~ 30%, preferably uses the Johnson Net manufacturing, and the slit between the Johnson Net grating is 0.2～2.0mm;
Above-described outer screen cloth and sector drum are the annular brace modes, described annular brace is to fix all annular gripper shoes at the reactor barrel of foot, outer screen cloth and sector drum are as on this annular backup pad, this annular brace mode is more firm, because also have outside catalyst below the annular backup pad of screen cloth and sector drum, do not make it to form the dead band in order to take full advantage of this part catalyst, open aperture at annular backup pad and form gas passage, make the partial reaction material in the gas-distributing channel enter catalyst zone below the annular backup pad by this gas passage, so just reduce the dead band of catalyst, improved the utilization rate of catalyst.
Described catalyst charge pipe is a plurality of, along circumferentially evenly distributing, namely on the end socket of top, evenly distributes on the circumference take reactor axis as the center of circle;
Described catalyst discharge nozzle is a plurality of, along circumferentially evenly distributing, namely on bottom head, evenly distributes on the circumference take reactor axis as the center of circle;
The quantity of described catalyst charge pipe and catalyst discharge nozzle is preferably 8,12,16,20 or 24, most preferably is 12.
The specification of catalyst charge pipe and catalyst discharge nozzle can adopt common specification in the prior art, as: DN40, DN80, DN100, DN150; Sch.80 or Sch.160.
The ratio of height to diameter of described reactor is 2 ~ 3.
Specifically can be by the following technical solutions:
Cylindrical shell, top end socket, bottom head, gas-distributing channel, gas collection road, reaction mass charging aperture, reacting product outlet, catalyst charge pipe, catalyst discharge nozzle, distributor, plate washer are capital equipment and parts.
Reaction feed enters reactor with gaseous state from the reaction mass charging aperture, enter gas-distributing channel by distributor, the duct radial centripetal of then passing on the gas-distributing channel wall is carried out reforming reaction by beds, the duct that the product that reaction generates passes the collection airway walls enters the gas collection road and then leaves reactor from reacting product outlet, catalyst enters reactor by the catalyst charge pipe, annular bed between gas-distributing channel and gas collection road moves down, leave reactor finally by the catalyst discharge nozzle, but thus the realization response material continuously by the less catalyst of Pressure Drop radially bed finish reaction, the turnover reactor that catalyst can be continuous is also mobile in bed.
The reactor catalyst bed is moving bed, and catalyst is continuous moving from the top down, and radially by beds and reacting therein, operating pressure is 0.1～1.0MPa (g) for reactant and hydrogen, and operating temperature is normal temperature～550 ℃.
Used catalyst is the materials such as industrial continuous reforming catalyst, platiniferous tin in the reactor, is the spherical particles of diameter 1.0～2.5mm, bulk density 450～850kg/m
3, contain the carbon distribution of 0～10% (wt).
Technical essential of the present utility model is:
The ratio of height to diameter of 1 reactor is strictly controlled: the ratio of height to diameter of reactor has determined thickness and the gas actual internal area of beds, flow velocity when the gas communication sectional area determines gas by central tube, catalyst " is attached to " on the center tube wall if flow velocity is too high, bed can not move down, and is called " adherent " phenomenon.Gas velocity when " adherent " can be calculated, and the ratio of height to diameter that strictly control reactor makes gas flow rate be lower than " adherent " gas speed below 20%.General ratio of height to diameter is controlled in 2 ~ 3 scopes.
Pressure drop values and the allocation proportion of 2 each inner part of control reactor: if the scope of the pressure drop values of each inner part of reactor is improper or ratio is unreasonable, will produce reaction mass at the top and the bottom of beds skewness, the utility model controls and adjusts pressure drop values and the allocation proportion of each inner part of reactor by the thickness of adjusting and optimize the percent opening in gas-distributing channel, gas collection road and beds, the control total reactor pressure is reduced to every meter bed of 0.02MPa/() about, so that unevenness is less than 3%.
Effect of the present utility model is:
Adopt the radially moving bed continuous reforming reactor of upper entering and lower leaving type, by strictly controlling respectively the ratio of height to diameter of reactor, optimize the physical dimension of each inner part, so that gas flow rate is fast far below " adherent " gas, and the reactant under the condition of low pressure drop in the realization response device is evenly distributed in beds, optimize reaction condition, satisfied the requirement of counter-flow moving bed CONTINUOUS REFORMER.
Description of drawings
Fig. 1 is upper entering and lower leaving type continuous reforming reactor structural representation of the present utility model
Fig. 2 is that gas-distributing channel is the upper entering and lower leaving type continuous reforming reactor cross sectional representation of outer screen cloth pattern
Fig. 3 is that gas-distributing channel is the upper entering and lower leaving type continuous reforming reactor cross sectional representation of a plurality of sector drums
Description of reference numerals:
1 cylindrical shell; 2 top end sockets; 3 bottom heads; 4 gas-distributing channels; 5 gas collection roads;
6 reaction mass charging apertures; 7 reacting product outlets; 8 catalyst charge pipes;
9 catalyst discharge nozzles; 10 distributors; 11 plate washers; 12 beds;
13 central tubes; 14 outer screen clothes; 15 sector drums
The specific embodiment
Below in conjunction with embodiment, further specify the utility model.
Embodiment:
As shown in Figure 1, a kind of upper entering and lower leaving type continuous reforming reactor comprises: cylindrical shell 1, top end socket 2 and bottom head 3, and top end socket 2 and bottom head 3 are separately positioned on the two ends of cylindrical shell 1, are fixedly connected to form the structure of sealing with cylindrical shell 1;
Described top end socket 2 is spherical, and the top is provided with reaction mass charging aperture 6 and catalyst charge pipe 8;
Described bottom head 3 is spherical, and the bottom is provided with reacting product outlet 7 and catalyst discharge nozzle 9;
Be provided with baffle plate 11 between described reactor shell 1 and the top end socket 2, described catalyst charge pipe 8 passes baffle plate 11 and stretches in the interior beds 12 of reactor.
Described reactor is radial structure, is provided with distributor 10, gas collection road 5, gas-distributing channel 4 and beds 12 in the reactor;
Distributor 10 coupled reaction material charging apertures 6,
Described gas collection road 5 is the space in the central tube 13 of reactor, described central tube 13 upper end closeds, and the lower end is connected with reacting product outlet 7, arranges porose on central tube 13 walls;
Described gas-distributing channel 4 upper ends are opened wide, lower end closed;
Described beds 12 is annular, is arranged between gas collection road 5 and the gas-distributing channel 4.
Described gas-distributing channel 4 is the annular circulation passages that form between outer screen cloth 14 and the reactor wall, and as shown in Figure 2, described outer screen cloth 14 is and the body concentric tubular structure of reactor cylinder, is enclosed within outside the central tube.
Described catalyst charge pipe is 12, along circumferentially evenly distributing;
Described catalyst discharge nozzle is 12, along circumferentially evenly distributing.
Embodiment 2:
With embodiment 1, difference only is
Described gas-distributing channel is 26 inner space runners that form with the sector drum 15 of perforate, and described sector drum is close to reactor wall along circumferentially arranging continuously; As shown in Figure 3,
It is attached to the reactor wall side for the arc of not perforate described sector drum 15, is the arc of perforate in the beds side, the sagitta 140mm of arc, chord length 250mm, percent opening 25.1%; Made by Johnson Net.
Claims (8)
1. upper entering and lower leaving type continuous reforming reactor is characterized in that:
Described reactor comprises: cylindrical shell, top end socket and bottom head, and top end socket and bottom head are separately positioned on the two ends of cylindrical shell, are fixedly connected to form the structure of sealing with cylindrical shell;
Described top end socket is sphere or elliposoidal, and the top is provided with reaction mass charging aperture and catalyst charge pipe;
Described bottom head is sphere or elliposoidal, and the bottom is provided with reacting product outlet and catalyst discharge nozzle;
Be provided with baffle plate between described reactor shell and the top end socket, described catalyst charge pipe passes baffle plate and stretches in the interior beds of reactor;
Described reactor is radial structure, is provided with distributor, gas collection road, gas-distributing channel and beds in the reactor;
Distributor coupled reaction material charging aperture,
Described gas collection road is the interior space of central tube of reactor, described central tube upper end closed, and the lower end is connected with reacting product outlet, arranges porose on the center tube wall;
Lower end closed is opened wide in described gas-distributing channel upper end;
Described beds is annular, is arranged between gas collection road and the gas-distributing channel.
2. upper entering and lower leaving type continuous reforming reactor as claimed in claim 1 is characterized in that:
Described gas-distributing channel is the annular circulation passage that forms between outer screen cloth and the reactor wall,
Described outer screen cloth is and the body concentric tubular structure of reactor cylinder, is enclosed within outside the central tube.
3. upper entering and lower leaving type continuous reforming reactor as claimed in claim 1 is characterized in that:
Described gas-distributing channel is the inner space runner that a plurality of sector drums with perforate form, and described sector drum is close to reactor wall along circumferentially arranging continuously,
It is attached to the reactor wall side for the arc of not perforate described sector drum, is the arc of perforate in the beds side.
4. upper entering and lower leaving type continuous reforming reactor as claimed in claim 1 is characterized in that:
Described catalyst charge pipe is a plurality of, along circumferentially evenly distributing;
Described catalyst discharge nozzle is a plurality of, along circumferentially evenly distributing.
5. upper entering and lower leaving type continuous reforming reactor as claimed in claim 4 is characterized in that:
The quantity of described catalyst charge pipe and catalyst discharge nozzle is 8,12,16,20 or 24.
6. upper entering and lower leaving type continuous reforming reactor as claimed in claim 1 is characterized in that:
Described central tube percent opening is 10～30%.
7. upper entering and lower leaving type continuous reforming reactor as claimed in claim 1 is characterized in that:
The percent opening of the arc of described perforate is 10～30%.
8. such as the described upper entering and lower leaving type of one of claim 1 ~ 7 continuous reforming reactor, it is characterized in that:
The ratio of height to diameter of described reactor is 2 ~ 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220300849 CN202683178U (en) | 2012-06-21 | 2012-06-21 | Upper-inlet and lower-outlet type continuous reforming reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220300849 CN202683178U (en) | 2012-06-21 | 2012-06-21 | Upper-inlet and lower-outlet type continuous reforming reactor |
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| Publication Number | Publication Date |
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| CN202683178U true CN202683178U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220300849 Expired - Lifetime CN202683178U (en) | 2012-06-21 | 2012-06-21 | Upper-inlet and lower-outlet type continuous reforming reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358455A (en) * | 2013-07-17 | 2013-10-23 | 苏州园方包装有限公司 | Foaming cylinder used in pre-foaming machine |
-
2012
- 2012-06-21 CN CN 201220300849 patent/CN202683178U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358455A (en) * | 2013-07-17 | 2013-10-23 | 苏州园方包装有限公司 | Foaming cylinder used in pre-foaming machine |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |
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| CX01 | Expiry of patent term |