CN204544136U - A kind of methanator - Google Patents
A kind of methanator Download PDFInfo
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- CN204544136U CN204544136U CN201520107103.8U CN201520107103U CN204544136U CN 204544136 U CN204544136 U CN 204544136U CN 201520107103 U CN201520107103 U CN 201520107103U CN 204544136 U CN204544136 U CN 204544136U
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- reaction unit
- catalytic reaction
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- pipe
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Abstract
The utility model discloses a kind of methanator, this reactor comprises circular radial shaped seals pressure-bearing shell (2), air inlet pipe (18), is arranged on catalytic reaction unit (8) in described housing (2) and central tube (12), described reactor also comprise be arranged in described central tube (12) by the conically shaped (7) of a pipe coiling, for sending into cooling medium, reduce the temperature of reactor.The methanator structure that the utility model provides is simple, and bed pressure drop is little, can take heat of reaction away in time, homogenizing bed temperature, improves reaction-ure conversion-age, avoids catalyst to occur superheat region, reduces reactor outlet temperature, extending catalyst service life.
Description
Technical field
The utility model relates to a kind of methanator.
Background technology
Methanator is one of nucleus equipment of coal preparing natural gas project.Methanation reaction is strong exothermic reaction.Research shows, often transforms CO and CO of 1%
2producible adiabatic temperature rise reaches 70 DEG C and 60 DEG C respectively.In order to control methanation reaction temperature, reclaim a large amount of heat energy produced in reaction, industrialization methanation process adopts multiple fixed bed methanator to contact, carry out methanation reaction step by step, a kind of heat-obtaining scheme arranges steam generator at reactor outlet to reclaim reaction heat, another kind of heat-obtaining scheme is in beds, arrange heat removing tube heat-obtaining, controls to react conversion level by compressor cycle portioned product gas.The Davy company of methanation technology patent Shang You Britain of business application, Denmark are realized
the Lugri company of company and Germany.
Current methanator mainly contains two types, and one is axial restraint bed bioreactor, and another kind is radial fixed-bed reactor.Radial bed reactor ratio of height to diameter compared with large, bed pressure drop is little, reactant is short in the beds time of staying, can adopt cold wall form, is uniformly distributed by the perforate realization response thing of conically shaped or central tube, reactant being uniformly distributed in bed is most important.Axial methanator exist reactor apparatus bulky dimensions, bed pressure drop greatly, easily there is local run aways, move heat slowly, low conversion rate and reactor need the problems such as material grade is high.
Therefore, reduce the equipment size of reactor, reduce reactor pressure decrease loss and reactor outlet temperature, improve the transformation efficiency of reactant, reclaim high-temperature position heat as much as possible, the service life of abundant extending catalyst, the demand meeting reactor maximization is technical problem urgently to be resolved hurrily at present.
Utility model content
The purpose of this utility model is to provide a kind of methanator, and this reactor can take heat of reaction away in time, homogenizing bed temperature.
To achieve these goals, the utility model provides a kind of methanator, it is characterized in that: this reactor comprises circular radial shaped seals pressure-bearing shell, extend into the air inlet pipe of enclosure interior, the catalytic reaction unit being arranged on the below of described air inlet pipe in described housing and central tube from described case top; Described catalytic reaction unit be coaxial with cylindrical shell can the container of containing catalyst bed, comprise top sealing plate, sealed bottom plate and sidewall; The madial wall of described sidewall and described housing is formed with annular space, this annular space and described air inlet pipe fluid communication; Described sidewall has pore to make described annular space and described catalytic reaction unit internal flow UNICOM; Described central tube from lower to upper successively through the bottom of described housing and the described sealed bottom plate of catalytic reaction unit enter described catalytic reaction unit center and against or be fixedly connected on the lower surface of described top sealing plate of catalytic reaction unit; The bottom of described central tube has gas outlet, and the inside of central tube is by being positioned at it perforate and described catalytic reaction unit internal flow UNICOM that tube wall of described catalytic reaction unit is arranged; Described reactor also comprise be arranged in described central tube by the conically shaped of a pipe coiling; One end of described pipe is communicated with the cooling medium inlet on described housing by inlet tube; The other end of described pipe is by the cooling medium outlet on outlet and described housing.
Preferably, it is characterized in that, described inlet tube and described outlet pass the described top sealing plate of catalytic reaction unit and are tightly connected with described top sealing plate.
Preferably, it is characterized in that, the top diameter of described conically shaped is 0.5-0.95 times of described inner diameter of centerpipe, and base diameter is 0.2-0.6 times of described inner diameter of centerpipe; The length of described conically shaped is 0.6-1.0 times of the height of described catalytic reaction unit.
Preferably, it is characterized in that, welded seal between the levels of the described pipe of conically shaped described in coiling.
Preferably, it is characterized in that, the bottom of described air inlet pipe is provided with at least one gas distributor for the reaction gas sending into described reactor that distributes.
Preferably, it is characterized in that, the described top sealing plate of described catalytic reaction unit is arranged with the catalyst sealing for cushioning catalyst thermal expansion.
Preferably, it is characterized in that, the described sidewall of described catalytic reaction unit is Johnson Net.
Preferably, it is characterized in that, between the described sealed bottom plate of described catalytic reaction unit and the bottom of described housing, be provided with heat-barrier material district.
The methanator that the utility model provides is compared with existing methanator, and tool has the following advantages:
1, homogeneous temperature in catalytic reaction unit, there will not be beds hot-spot phenomenon, and what can solve reaction heat under limited steric requirements removes problem;
2, the service life (life-span can improve 15%-20%) of catalyst is extended, the axial flow reactor of bed pressure drop comparatively with treating capacity low (20%-35%), reactor outlet temperature does not comparatively establish the low 30-80 DEG C of heat-obtaining conically shaped under the same terms;
3, because heat-obtaining conically shaped construction profile is simple, little to reactor inner fluid flowing interference.According to Practical Project situation, suitable pipe diameter can be chosen, pipe is set and be wound around quantity, reach and remove reaction heat object;
4, not only can apply to coal system and substitute natural gas and gas employing methanation of coke oven technique, also can be used for the fixed-bed catalytic exothermic reactions such as methanol-fueled CLC, CO conversion, F-T synthesis.
Other feature and advantage of the present utility model are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for description, is used from explanation the utility model, but does not form restriction of the present utility model with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the structural representation (in order to simplify accompanying drawing, specifically do not mark the concrete shape of sidewall 13 in FIG, can reference diagram 2) of a kind of detailed description of the invention of the methanator that the utility model provides;
Fig. 2 is the sectional view sectional view of A-A face (namely in Fig. 1) of a kind of detailed description of the invention of the methanator that the utility model provides;
Fig. 3 is the partial schematic diagram of the conically shaped that a kind of detailed description of the invention of the methanator that the utility model provides adopts.
Description of reference numerals
1 air inlet 2 housing 3 first gas distributor 4 inlet tube
5 cooling medium inlet 6 top sealing plate 7 conically shapeds
8 catalytic reaction unit 9 sealed bottom plate 10 gas outlets
11 heat-barrier material district 12 central tube 13 sidewall 14 catalyst sealing 15 outlets
16 cooling medium outlet 17 second gas distributor 18 air inlet pipe 19 annular spaces
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
The utility model provides a kind of methanator, it is characterized in that: this reactor comprises circular radial shaped seals pressure-bearing shell 2, extend into the air inlet pipe 18 of enclosure interior, the catalytic reaction unit 8 being arranged on the below of described air inlet pipe 18 in described housing 2 and central tube 12 from described housing 2 top; Described catalytic reaction unit 8 be coaxial with cylindrical shell 2 can the container of containing catalyst bed, comprise top sealing plate 6, sealed bottom plate 9 and sidewall 13; Described sidewall 13 is formed with annular space 19 with the madial wall of described housing 2, this annular space 19 and described air inlet pipe 18 fluid communication; Described sidewall 13 has pore to make described annular space 19 and described catalytic reaction unit internal flow UNICOM; Described central tube 12 from lower to upper successively through the bottom of described housing 2 and the described sealed bottom plate 9 of catalytic reaction unit enter described catalytic reaction unit 8 center and against or be fixedly connected on the lower surface of described top sealing plate 6 of catalytic reaction unit; The bottom of described central tube 12 has gas outlet 10, and the inside of central tube 12 is by being positioned at it perforate and described catalytic reaction unit 8 internal flow UNICOM that tube wall of described catalytic reaction unit is arranged; Described reactor also comprise be arranged in described central tube 12 by the conically shaped 7 of a pipe coiling; One end of described pipe is communicated with the cooling medium inlet 5 on described housing 2 by inlet tube 4; The other end of described pipe exports 16 by outlet 15 with the cooling medium on described housing 2 and is communicated with.
According to the utility model, it will be understood by those skilled in the art that, the described inlet tube 4 be communicated with described conically shaped 7 and outlet 15 can pass described central tube 12, catalytic reaction unit 8 and housing 2 successively, export 16 be respectively communicated with described cooling medium inlet 5 and cooling medium.Preferably, described inlet tube 4 and described outlet 15 can pass the described top sealing plate 6 of catalytic reaction unit and be tightly connected with described top sealing plate 6 the utility model.
According to the utility model, it will be understood by those skilled in the art that, be uniformly distributed to make the reacting gas in catalytic reaction unit 8, be easy to processing and conically shaped 7 is installed, the top diameter of described conically shaped 7 can be 0.5-0.95 times of described inner diameter of centerpipe, and base diameter can be 0.2-0.6 times of described inner diameter of centerpipe; The length of described conically shaped 7 can be 0.6-1.0 times of the height of described catalytic reaction unit 8.
According to the utility model, in order to make the reacting gas in catalytic reaction unit 8 be uniformly distributed, preferred weld sealing between the levels of the described pipe of conically shaped 7 described in coiling.
According to the utility model, the bottom of described air inlet pipe 18 can be provided with at least one gas distributor for the reaction gas sending into described reactor that distributes, described gas distributor is well-known to those skilled in the art, the utility model repeats no more, and described gas distributor is preferably provided with two.
According to the utility model, the described top sealing plate of described catalytic reaction unit can be provided with the catalyst sealing 14 for cushioning catalyst thermal expansion for 6 times.Described catalyst sealing 14 is well-known to those skilled in the art, can be placed with the filler that the porositys such as heat resisting porcelain ball are greater than methanation catalyst in it.
According to the utility model, it will be appreciated by persons skilled in the art that the described sidewall 13 of described catalytic reaction unit 8 can be Johnson Net, described Johnson Net is well-known to those skilled in the art, and the utility model repeats no more.
According to the utility model, excessively be heated to prevent the bottom of housing 2 and stop beds 8 to move down, heat-barrier material district 11 can be provided with between the described sealed bottom plate 9 of described catalytic reaction unit and the bottom of described housing 2, the heat-barrier materials such as the heat insulating ball of single material or multiple composite, heat insulation felt rug or heat insulating belt can be placed with in described heat-barrier material district 11, this is well-known to those skilled in the art, and the utility model repeats no more.
Further illustrate the utility model below in conjunction with accompanying drawing by embodiment, but therefore the utility model is not subject to any restriction.
As shown in Figure 1, the methanator that the present embodiment adopts comprises the pressure-bearing shell 2 that upper end is provided with air inlet pipe 18, lower end is provided with central tube 12, described housing 2 is also provided with cooling medium inlet 5 and cooling medium outlet 16, the top of described air inlet pipe 18 is provided with air inlet 1, the below that bottom is provided with the first gas distributor 3, first gas distributor 3 is provided with the second gas distributor 17.In described housing 2, reaction zone is radial flow reaction zone, and as shown in Figure 2, the sidewall of catalytic reaction unit 8 is made up of Johnson Net and forms annular space 19 with case inside wall.Catalytic reaction unit 8 top is made up of top sealing plate 6, and bottom is made up of sealed bottom plate 9, stops beds 8 to move down, and prevents reacting gas from entering area of insulation, be provided with heat-barrier material district 11 between the bottom of sealed bottom plate 9 and housing 2.The described top sealing plate 6 of catalytic reaction unit has the catalyst sealing 14 of being filled by heat resisting porcelain ball.Described central tube 12 sealing is fixed on the bottom of catalyst sealed bottom plate 9, catalyst top sealing plate 6 and housing 2, and described central tube 12 inside is provided with heat-obtaining conically shaped 7.As shown in Figure 3, described conically shaped 7 exports 16 with cooling medium inlet 5, cooling medium respectively by inlet tube 4 respectively with outlet 15 and is connected.
In methanator, catalyst packing height is 1500mm, inner diameter of centerpipe is 450mm, the height in the region of central tube perforate is 1400mm, the length 1380mm of conically shaped, top diameter are 412mm, base diameter is 150mm, and conically shaped top is higher than the region 100mm topmost of central tube 12 perforate.
The operation principle of the methanator that the utility model embodiment provides is as follows:
Reaction gas (as coal based synthetic gas or coke-stove gas) enters in housing 2 by air inlet 1, successively by the first gas distributor 3 and the second gas distributor 17, after methanator cross section is uniformly distributed, entered the beds of catalytic reaction unit 8 by sidewall 13 radial direction be made up of Johnson Net after unstripped gas enters annular space 19, under the effect of catalyst, carry out methanation reaction, release a large amount of heats simultaneously.Reacted gas collects at central tube 12 through beds.Cooling medium enters inlet tube 4 from cooling medium entrance 5, enter conically shaped 7 subsequently, the conically shaped 7 that cooling medium is coiled into along pipe flows downward, constantly heat is absorbed in the process flowed downward, arrive backward upper flowing bottom conically shaped, leave methanator by outlet 15 and cooling medium outlet 16.Absorbed the gas product of partial heat along central tube by conically shaped 7, continue across thermal insulating filling district 11, bottom housing 2, leave reactor by gas outlet 10.
The methanator structure that the utility model provides is simple, and bed pressure drop is little, can take heat of reaction away in time, homogenizing bed temperature, improves reaction-ure conversion-age, avoids catalyst to occur superheat region, reduces reactor outlet temperature, extending catalyst service life.
Claims (8)
1. a methanator, is characterized in that: catalytic reaction unit (8) and central tube (12) that this reactor comprises circular radial shaped seals pressure-bearing shell (2), extend into the air inlet pipe (18) of enclosure interior, is arranged on the below of the interior described air inlet pipe (18) of described housing (2) from described housing (2) top; Described catalytic reaction unit (8) be coaxial with cylindrical shell (2) can the container of containing catalyst bed, comprise top sealing plate (6), sealed bottom plate (9) and sidewall (13); Described sidewall (13) is formed with annular space (19) with the madial wall of described housing (2), this annular space (19) and described air inlet pipe (18) fluid communication; Described sidewall (13) has pore to make described annular space (19) and described catalytic reaction unit internal flow UNICOM; Described central tube (12) from lower to upper successively through the bottom of described housing (2) and the described sealed bottom plate (9) of catalytic reaction unit enter described catalytic reaction unit (8) center and against or be fixedly connected on the lower surface of described top sealing plate (6) of catalytic reaction unit; The bottom of described central tube (12) has gas outlet (10), and the inside of central tube (12) is by being positioned at it perforate and described catalytic reaction unit (8) internal flow UNICOM that tube wall of described catalytic reaction unit is arranged; Described reactor also comprise be arranged in described central tube (12) by the conically shaped (7) of a pipe coiling; One end of described pipe is communicated with the cooling medium inlet (5) on described housing (2) by inlet tube (4); The other end of described pipe exports (16) by outlet (15) with the cooling medium on described housing (2) and is communicated with.
2. reactor according to claim 1, it is characterized in that, described inlet tube (4) and described outlet (15) through catalytic reaction unit (8) described top sealing plate (6) and be tightly connected with described top sealing plate (6).
3. reactor according to claim 1, is characterized in that, the top diameter of described conically shaped (7) is 0.5-0.95 times of described inner diameter of centerpipe, and base diameter is 0.2-0.6 times of described inner diameter of centerpipe; The length of described conically shaped (7) is 0.6-1.0 times of the height of described catalytic reaction unit (8).
4. reactor according to claim 1, is characterized in that, welded seal between the levels of the described pipe of conically shaped described in coiling (7).
5. reactor according to claim 1, is characterized in that, the bottom of described air inlet pipe (18) is provided with at least one gas distributor for the reaction gas sending into described reactor that distributes.
6. reactor according to claim 1, is characterized in that, the described top sealing plate (6) of described catalytic reaction unit is arranged with the catalyst sealing (14) for cushioning catalyst thermal expansion.
7. reactor according to claim 1, is characterized in that, the described sidewall (13) of described catalytic reaction unit (8) is Johnson Net.
8. reactor according to claim 1, is characterized in that, is provided with heat-barrier material district (11) between the described sealed bottom plate (9) of described catalytic reaction unit and the bottom of described housing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520107103.8U CN204544136U (en) | 2015-02-13 | 2015-02-13 | A kind of methanator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520107103.8U CN204544136U (en) | 2015-02-13 | 2015-02-13 | A kind of methanator |
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| CN204544136U true CN204544136U (en) | 2015-08-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569443A (en) * | 2017-09-28 | 2019-04-05 | 中国石化工程建设有限公司 | Mobile radial bed reactor |
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2015
- 2015-02-13 CN CN201520107103.8U patent/CN204544136U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569443A (en) * | 2017-09-28 | 2019-04-05 | 中国石化工程建设有限公司 | Mobile radial bed reactor |
| CN109569443B (en) * | 2017-09-28 | 2021-09-10 | 中国石化工程建设有限公司 | Moving radial bed reactor |
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