CN105289440A - Hydrogen storage reactor and system with fin and spiral coil type heat exchanger coupled - Google Patents
Hydrogen storage reactor and system with fin and spiral coil type heat exchanger coupled Download PDFInfo
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Abstract
The invention discloses a hydrogen storage reactor and system with a fin and a spiral coil type heat exchanger coupled, and belongs to the technical field of chemical reactor design. The overall structure of the reactor is a cylindrical shell, and the fin and the spiral coil type heat exchanger subjected to geometric structure optimization are coupled in the shell in an integrated mode, and a heat exchange fluid inlet and outlet pipeline and a hydrogen inlet and outlet pipeline are fixed to the top end and bottom end of the shell respectively. Heat exchange fluid enters the spiral coil type heat exchanger from the center of the top end of the shell, and flows out of the center of the bottom end of the shell, and hydrogen enters the shell through multiple holes channels evenly distributed in the top end of the shell, and reacts with metal hydride. The hydrogen storage reactor and system have the advantages that operation is easy, the structure is compact, hydrogen can be fast dispersed into a bed layer, the heat and mass transfer effect is good, and the hydrogen storage reactor and system are suitable for hydrogen occasions with the large heat effect in the hydrogenation/dehydrogenation reaction process.
Description
Technical field
The invention belongs to chemical reactor design field, relate to a kind of storage hydrogen reactor, be specifically related to storage hydrogen reactor that a kind of fin is coupled with coil heat exchanger and system.
Background technology
At present, following several classification is mainly contained for the hydride hydrogen-storing reactor that fuel factor in hydrogenation/dehydrogenation course of reaction is larger both at home and abroad:
1, hydrogen reactor---heat-exchange tube is centered around the periphery of circular cylindrical reactor to the storage of heat-exchange tube externally-wound type, heat exchanging fluid enters from reactor upper side, until another side, lower end is flowed out, hydrogen enters hydride bed by the aperture on housing axle central tube through filter screen, progressively react with bed with radial direction, until close to the shell rim place of heat-exchange tube.This reactor has that structure is simple, heat transfer effect is better, the features such as hydrogenation/dehydrogenation reaction rate is very fast, but due to hydrogen through filter screen therefrom heart time of starting to be diffused into needed for the bed at heat-exchange tube place longer, housing radial direction has certain internal temperature gradient, skewness, overall efficiency is not high.(InternationalJournalofHydrogenEnergy,2013,38(22):9570-9577)。
2, straight pipe type heat exchanger coupling storage hydrogen reactor---metal hydride solid material is placed in the reaction zone of cylindrical housings, filter screen is fixed respectively in housing top and bottom, hydrogen is by being diffused rapidly in hydride bed after filter screen, and react with it, hydrogenation/dehydrogenation process produces or the heat of needs is taken away by the heat exchanging fluid be distributed in the straight pipe type heat-exchange tube of housing axle center or inputted.The features such as this reactor has simple and compact for structure, and gas phase drag is less, but due to the heat exchange area of straight pipe type heat exchanger tube limited, heat exchange efficiency is more general, not too be applicable to the storage hydrogen occasion (AppliedEnergy, 2013,112:1181-1189) that fuel factor in course of reaction is larger.
3, the storage hydrogen reactor of multi beam little tubing heat exchanger coupling---between the upper end and bottom of reactor shell, fix the passage of tube bank as heat exchanging fluid of multiple small diameter, hydrogen enters in reactor and metal hydride between the little tubular type heat-exchange tube of multi beam reacts from the side of housing through filter screen.This reactor has the simple and good heat and mass effect of structure; but because heat exchanger mostly is the tube bank of small diameter; treating capacity is less; and the resistance that hydrogen diffuses into reaction bed inside is larger; thus its scale application (AppliedThermalEngineering is limited; 1998,18 (6): 457-480).
4, the storage hydrogen reactor of micropassage type heat exchanger coupling---in order to increase heat exchange area, reaching the object of enhanced heat exchange effect, by heat-exchange tube microchannel, namely using internal diameter at the straight tube of below 1mm as heat transfer fluid channels.Although this reactor has the advantage that reaction speed is fast, good effect of heat exchange, structure are also compacter, but due to microchannel processed complex, cost is higher, and heat exchanger thinner thickness, and in hydrogenation/dehydrogenation process, produce thermal stress, fragile micropassage type heat exchanger (InternationalJournalofHydrogenEnergy, 2013,38 (35): 15242-15253).
5, the storage hydrogen reactor of helix tube type micro channel heat exchanger coupling---in order to improve the shortcoming of above-mentioned micropassage type heat exchanger easy crack damage in hydrogenation/dehydrogenation course of reaction, tubular type microchannel is designed to spirality by this reactor, avoids in heat transfer process because the thermal stress of generation of expanding with heat and contract with cold is to the infringement of tubular type microchannel.But add manufacturing process difficulty and cost equally, and due to heat exchanger caliber less, heat exchanging fluid is once there be dirt easily to result in blockage phenomenon (China, CN.201310189618.2).
Although other classes that 6, U-tube formula, arc heat-exchangers of the plate type are coupled are stored up, hydrogen reactor---these reactors have easy to operate, the features such as compact conformation, reaction rate are very fast, but its heat-transfer effect is more general, and process is difficult, replaceability is poor, also cannot be applied at present in actual storage hydrogen industry.
As can be seen here, all there are some defects in above-mentioned existing all kinds of storage hydrogen reactor, in actual industry application, there is restriction.
Summary of the invention
In order to overcome the defect that above-mentioned prior art exists, the storage hydrogen reactor that the object of the present invention is to provide a kind of fin to be coupled with coil heat exchanger and system, this storage hydrogen reactor is simple to operate, treating capacity is large, easily repair and replacement, long service life, heat and mass excellent effect.
The present invention is achieved through the following technical solutions:
The invention discloses the storage hydrogen reactor that a kind of fin is coupled with coil heat exchanger, comprise housing and be arranged on upper cover and the low head of housing upper/lower terminal, the junction of upper cover, low head and housing is respectively equipped with top tube sheet and bottom tube sheet, cavity between upper cover and top tube sheet forms gas phase dashpot, cavity between low head and bottom tube sheet forms heat exchanging fluid dashpot, and the cavity between top tube sheet and bottom tube sheet forms reaction bed district; The sidewall in reaction bed district offers material import and export, upper cover roof offers gas phase entrance and the heat exchanging fluid that communicates with reaction bed district exports, the diapire of low head is offered heat exchanging fluid entrance; Be provided with in reaction bed district for the coil hot switching path by heat exchanging fluid, and be arranged in juxtaposition some row's fins at the outer surface of this coil hot switching path.
Be provided with in the upper surface of top tube sheet only for the filter screen of hydrogen turnover, filter screen is made up of stainless steel, and filter screen thickness is 0.5 ~ 1mm, and aperture is 400 ~ 500 orders.
The screw pitch of coil hot switching path and the ratio of screw diameter are 0.333, and some row's fins are distributed on the outer surface of coil hot switching path evenly and at intervals.
Upper cover sidewall offers gas phase dashpot exhaust outlet.
Densely covered some gas phase ducts on the tube sheet of top, gas phase duct is with coaxial annular form around top tube sheet axle central distribution, and aperture is 3 ~ 5mm.
Some temperature tubes for measuring metal hydride bed reaction temperature are being provided with relative on the reaction bed district sidewall of side with material import and export.
Temperature tube is interval 45mm each other.
Upper cover and all adopt flange to be connected between low head with housing, and seal with flange seal ring.
Brace type bearing is also provided with bottom low head.
The invention also discloses the reactor assembly of the hydrogen storage media be made up of storage hydrogen reactor, comprise storage hydrogen reactor, hydrogen source gas cylinder and thermostatical oil bath, the pipeline that thermostatical oil bath is connected with storage hydrogen reactor is provided with delivery pump, flow control valve, flowmeter successively; The pipeline that hydrogen source gas cylinder is connected with storage hydrogen reactor is provided with pressure-reducing valve, triple valve, Pressure gauge and pressure-control valve successively; Vavuum pump is connected with triple valve by pipeline.
Compared with prior art, the present invention has following useful technique effect:
Because the fuel factor of hydrogenation/dehydrogenation reaction in hydride hydrogen-storing process is comparatively large, therefore, the heat-transfer effect of enhanced reactor inside is more conducive to promoting hydrogenation/dehydrogenation reaction, thus improves the overall hydrogen storage property of reactor.Therefore storage hydrogen reactor disclosed by the invention, be provided with for the coil hot switching path by heat exchanging fluid in reaction bed district, and be arranged in juxtaposition some row's fins at the outer surface of this coil hot switching path, utilize the secondary circulation characteristic of spiral coil and the larger heat transfer area of fin, heat-transfer effect between enhanced heat exchange fluid and metal hydride, thus promote the carrying out of reaction, and the coil heat exchanger geometry containing fin is optimized, reactor is regulated to be applicable to different types of hydride hydrogen-storing process (different reaction heat effects) by the temperature and flow velocity that control heat exchanging fluid.Meanwhile, the easily detachable upper and lower end socket of the present invention is connected with housing, facilitates maintenance and the replacing of coil hot switching path.Compared with the storage hydrogen reactor be coupled with current existing heat exchanger external, straight pipe type, the little tubular type of multi beam, micropassage type, U-shaped tubing heat exchanger etc., the present invention has that simple to operate, treating capacity is large, easily replacing, long service life, heat and mass excellent effect and the feature such as gas phase diffusion resistance is little, can meet the application of the larger hydride hydrogen-storing technology of fuel factor in hydrogenation/dehydrogenation process.
Further, filter is arranged at the upper surface of top tube sheet, has two objects: one is enter in gas phase dashpot in order to avoid impurity enters in reaction bed with hydride; Two is in order to avoid filter screen in use causes distortion even to damage because of the fuel factor of hydrogenation/dehydrogenation reaction generation, filter screen is arranged on the tube sheet upper surface position, top away from conversion zone, in reduction course of reaction of trying one's best, variations in temperature is on the impact of filter screen.Filter screen is stainless steel, and its aperture, within the scope of 400 ~ 500 orders, enters end socket region to prevent metal hydride powder and is mixed in hydride powder with other impurity.
Further, after Geometrical optimization, the screw pitch of spiral coil and the ratio of screw diameter are 0.333, and fin is distributed on spiral coil every 35mm gap uniformity.
Further, in view of the high risk feature such as inflammable and explosive of hydrogen, be provided with gas phase dashpot exhaust outlet in upper cover side, be connected with outdoor environment, in emergency circumstances.
Further, housing is arranged the temperature tube for measuring metal hydride bed reaction temperature, in order to the reaction temperature of monitoring reactor bed inside, respectively in the upper, middle and lower segment of reactor, be uniformly distributed temperature tube every 45mm, according to the reaction temperature of monitoring, estimate the reaction heat of hydrogenation/dehydrogenation process, according to the size of reaction heat, initial import hydrogen pressure, heat exchanging fluid flow velocity and temperature are controlled to adjust.
Accompanying drawing explanation
Fig. 1 is the storage hydrogen reactor structural representation that fin of the present invention is coupled with coil heat exchanger;
Fig. 2 is end socket of the present invention and shell flange connection diagram;
Fig. 3 is tube sheet aperture, top of the present invention distribution schematic diagram;
Fig. 4 is seal washer schematic diagram between inventive pipeline and tube sheet;
Fig. 5 is brace type bearing schematic diagram of the present invention;
Fig. 6 is the invention process system flow block diagram.
Wherein, 1 is housing; 2 is upper cover; 3 is gas phase entrance; 4 is meteorological dashpot; 5 is heat exchanging fluid outlet; 6 is the packing ring between tube sheet and pipeline; 7 is filter screen; 8 is gas phase dashpot exhaust outlet; 9 is Flange joint; 10 is top tube sheet; 11 is material import and export; 12 is coil hot switching path; 13 is fin; 14 is heat exchanging fluid dashpot; 15 is brace type bearing; 16 is heat exchanging fluid entrance; 17 is low head; 18 is bottom tube sheet; 19 is temperature tube; 20 is reaction bed district; 21 is nut; 22 is flange; 23 is bolt; 24 is flange seal ring; 25 is gas phase duct; 26 is hydrogen source gas cylinder; 27 is vavuum pump; 28 is Pressure gauge; 29 is flowmeter; 30 is delivery pump; 31 is thermostatical oil bath.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, and the explanation of the invention is not limited.
See Fig. 1, the storage hydrogen reactor that fin disclosed by the invention is coupled with coil heat exchanger, comprise columniform housing 1 and be arranged on upper cover 2 and the low head 17 of housing 1 upper/lower terminal, upper cover 2, low head 17 are respectively equipped with top tube sheet 10 and bottom tube sheet 18 with the junction of housing 1, cavity between upper cover 2 and top tube sheet 10 forms gas phase dashpot 4, cavity between low head 17 and bottom tube sheet 18 forms heat exchanging fluid dashpot 14, and the cavity between top tube sheet 10 and bottom tube sheet 18 forms reaction bed district 20; The sidewall in reaction bed district 20 offers material import and export 11, upper cover 2 roof offers gas phase entrance 3 and the heat exchanging fluid that communicates with reaction bed district 20 exports 5, the diapire of low head 17 is offered heat exchanging fluid entrance 16; Be provided with in reaction bed district 20 for the coil hot switching path 12 by heat exchanging fluid, and be arranged in juxtaposition some row's fins 13 at the outer surface of this coil hot switching path 12.Hydride solid-phase reactant is then filled between coil hot switching path 12 and housing 1, and the heat discharging/absorb in the hydrogenation/dehydrogenation course of reaction that itself and hydrogen occur is taken away by heat exchanging fluid or supplies.
Be connected and sealed with flange 22 between upper and lower end socket and housing, the maintenance in process easy to use and dismounting, carry out mechanical seal with O type circle 6 (as shown in Figure 4) between tube sheet and pipeline.Be provided with in the upper surface of top tube sheet 10 only for the filter screen 7 of hydrogen turnover, filter screen 7 is positioned at top tube sheet upper surface, has two objects: one is enter in gas phase dashpot 4 in order to avoid impurity enters in reaction bed district 20 with hydride; Two is in order to avoid filter screen 7 in use causes distortion even to damage because of the fuel factor of hydrogenation/dehydrogenation reaction generation, filter screen 7 is arranged on the tube sheet upper surface position, top away from conversion zone, in reduction course of reaction of trying one's best, variations in temperature is on the impact of filter screen 7.Filter screen material is stainless steel, and it is specifically of a size of: diameter 95mm, thickness 0.5 ~ 1mm, and net mesoporous is of a size of 400 ~ 500 orders.
Heat exchanging fluid in the present invention is through heat exchanging fluid dashpot 14 from the heat exchanging fluid entrance 16 of low head 17, then fin and the integrated coil hot switching path 12 of spiral coil is entered into, carry out exchange heat with metal hydride bed, finally flow out from the heat exchanging fluid outlet 5 of upper cover.Gas phase is then successively through the loose structure 25 of gas phase dashpot 4, filter screen 7 and top tube sheet 10 from gas phase (hydrogen) entrance 3 of upper cover 2, then the porous metals hydride bed that porosity is about about 0.5 is entered into, and be diffused into bed inside, react with hydride generation hydrogenation/dehydrogenation.In view of the high risk feature such as inflammable and explosive of hydrogen, be provided with gas phase dashpot exhaust outlet 8 in upper cover 2 side, be connected with outdoor environment, in emergency circumstances.The turnover mode of hydrogen and heat exchanging fluid is arranged respectively to mode from top to bottom and from top to bottom, mainly in order to reduce the diffusional resistance of gas phase and strengthen the heat transfer effect of heat exchanging fluid.As for solid-phase reactant---metal hydride, undertaken filling or taking out by the material import and export 11 of housing side, loading is comparatively large, and between 1 ~ 5Kg, the conveniently filling of material and taking-up, the import and export of material are designed to the major path that diameter is 50mm.
There is certain resistance because gas diffuses and penetrate in the process of hydride beds layer region, and the reaction between hydrogen and solid-phase reactant is reversible reaction, there is certain molecular balance pressure.Therefore, in order to allow gas phase diffusion penetrate into whole bed, and fully react with solid-phase reactant, the pressure of gas phase porch should higher than the molecular balance pressure under uniform temperature, therefore its initial import hydrogen pressure is generally within the scope of 0.3 ~ 5MPa.For the solid-phase reaction system being similar to lanthanum nickel system hydride etc. and can reacting with hydrogen generation hydrogenation/dehydrogenation at normal temperatures, lower initial import hydrogen pressure (0.3 ~ 1MPa) can be selected, and water can be adopted to be heat exchanging fluid, reaction is heated or is taken away the heat of reaction; For the solid-phase reaction system being similar to magnesium-based hydride etc. and need reacting with hydrogen generation hydrogenation/dehydrogenation under high temperature (more than 150 DEG C), in view of it needs higher molecular balance pressure and reaction temperature, its initial import hydrogen pressure need adopt higher hydrogen pressure (1 ~ 5MPa), and heat exchanging fluid can select the medium such as silicone oil, air to carry out heat exchange to reaction bed.In order to the reaction temperature of monitoring reactor bed inside, respectively in the upper, middle and lower segment of reactor, be uniformly distributed temperature tube 19 every 45mm, temperature tube diameter is 3mm, and the degree of depth inserting hydride bed is 15mm.According to the reaction temperature of monitoring, estimate the reaction heat of hydrogenation/dehydrogenation process, according to the size of reaction heat, initial import hydrogen pressure, heat exchanging fluid flow velocity and temperature are controlled to adjust.
In order to allow hydrogen rapid diffusion penetrate into conversion zone, on top tube sheet 10 gather some gas phase ducts 25, and by gas phase duct 25 with annular form around tube sheet axle central distribution, as shown in Figure 3.Its aperture is 3 ~ 5mm, and have 73 hole paths, the diameter of tube sheet and thickness are respectively 95mm and 2 ~ 3mm.
Adopt fin and the integrated heat exchanger of spiral coil as the passage of heat exchanging fluid, by channels designs spirality, the turbulent extent of heat exchanging fluid in heat exchange area and reinforced pipe can be increased, the heat-transfer effect between enhanced heat exchange fluid and metal hydride bed and the hydrogenation/dehydrogenation reaction rate improving metal hydride.In addition, the heat exchanging fluid pipeline distortion that the extrusion stress etc. that coil fluid passage can avoid the thermal stress of metal hydride hydrogenation/dehydrogenation reaction generation and particle powder to produce because dilation circulation in course of reaction causes even is broken.The function of fin then can ensure that heat exchanger fully contacts with reaction bed, make whole reaction bed can fast and heat exchanging fluid carry out exchange heat, whole reaction bed temperature distribution uniform.
The described geometry containing fin coil heat exchanger is after optimizing, and its key dimension has: heat exchanging region length of field 135mm; Screw pitch 15mm; The spiral number of turns 9 is enclosed; Screw diameter 45mm; Screw pitch is 0.333 with the ratio of internal diameter; Heat-exchange tube bore 15mm; Heat-exchange tube wall thickness 2.5mm; Fin internal diameter, external diameter and thickness are respectively 20mm, 35mm and 1.5mm; Fin is distributed on spiral coil every 35mm gap uniformity.
Bottom tube sheet 18 in the present invention is not required to be gas phase and provides passage, mainly for heat exchanging fluid provides airtight dashpot, reduces the possibility of heat exchanger pipeline breakage, increases reliability and the service life of reactor.The diameter of tube sheet is consistent with top tube sheet with thickness, is respectively 95mm and 2 ~ 3mm.
See Fig. 2, the end socket in the present invention and being connected by flange 22 between housing, is sealed with bolt 23, nut 21 and flange seal ring 24, to facilitate the maintenance of reactor and to change.See Fig. 5, the present invention is also provided with brace type bearing 15 bottom low head 17.
Below by concrete with Mg
2ni hydrogen bearing alloy is the storage hydrogen reactor of medium is that example is described the storage hydrogen reactor containing the coupling of fin coil heat exchanger.
Mg
2the hydrogenation/dehydrogenation of Ni hydrogen bearing alloy and hydrogen is reacted and is shown below:
From above formula, the heat of this hydrogen bearing alloy release or needs in hydrogenation/dehydrogenation reaction reaches 63.36kJmol
-1, there is larger fuel factor, if can not heat and heat exchanging fluid be exchanged in time, produce great adverse effect by the hydrogen storage property of storage hydrogen reactor.To inhale hydrogen process, hydrogen abstraction reaction belongs to exothermic reaction, carrying out along with reaction produces a large amount of heats, the temperature of reaction bed in reactor and molecular balance pressure is caused to rise gradually, and the motive force of reaction mainly comes from the pressure reduction between initial hydrogen pressure and platform hydrogen pressure, therefore once reaction platform hydrogen pressure is higher than initial hydrogen pressure, hydrogen abstraction reaction will suspend.
Based on Mg
2as shown in Figure 6, it is made up of integrated storage hydrogen reactor, hydrogen source gas cylinder 26, vavuum pump 27, Pressure gauge 28, flowmeter 29, small-sized delivery pump 30, thermostatical oil bath 31, pressure-reducing valve V1, triple valve V2, pressure-control valve V3, flow control valve V4 and the pipeline be coupled of fin and coil heat exchanger the reactor assembly of Ni hydrogen storage media.By Mg
2ni hydrogen storage media loads after reactor, closes gas cylinder, opens valve V2 and V3, vacuumize 30min with vavuum pump to reactor assembly, drains foreign gas in system in external environment, valve-off V2, V3 and vavuum pump.Thermostatical oil bath is heated to uniform temperature (150 ~ 200 DEG C), heat exchanging fluid is circulated by the small-sized delivery pump being about 120W by power in reactor assembly, and by valve V4 adjust flux.Open gas cylinder and valve V2, regulate hydrogen to enter the initial hydrogen pressure (1 ~ 5MPa) of reactor assembly by pressure-reducing valve V1.Deng (by observing Pressure gauge) after the pressure stability in the system outside reactor, valve-off V2 also opens valve V3, is filled with by hydrogen in the reactor of coil heat exchanger coupling, by being distributed in the thermocouple monitoring Mg in temperature tube 19
2bed temperature in Ni hydrogen bearing alloy and hydrogen reaction process, until reaction all completes.
In sum, the fin disclosed by the invention storage hydrogen reactor that be coupled integrated with coil heat exchanger, traditional straight pipe type heat exchanger designs is become coil heat exchanger, after Geometrical optimization, the screw pitch of spiral coil and the ratio of screw diameter are 0.333, and being arranged in juxtaposition two exclusive fins at heat-exchanger surface, its arrangement mode is also spiral form.The purpose of design of the coil heat exchanger containing fin has two: one to be the secondary circulation utilizing spiral coil inside, increase the turbulent extent of heat exchanging fluid when flowing through helical pipe, heat-transfer effect between enhanced heat exchange fluid and metal hydride bed, the layout of outer fin then can further improve the diabatic process speed of heat exchanging fluid and hydride bed, reduce heat transmission resistance, thus promote the carrying out of hydrogenation/dehydrogenation reaction; Two is be arranged to coil, in its opposing hydrogenation/dehydrogenation course of reaction in the extrusion stress of hydride powder and heat transfer process because of the performance of the thermal stress produced of expanding with heat and contract with cold better, not fragile, life cycle is longer, reduces cost.
Claims (10)
1. the storage hydrogen reactor that is coupled with coil heat exchanger of a fin, it is characterized in that, comprise housing (1) and be arranged on housing (1), the upper cover (2) at lower two ends and low head (17), upper cover (2), low head (17) is respectively equipped with top tube sheet (10) and bottom tube sheet (18) with the junction of housing (1), cavity between upper cover (2) and top tube sheet (10) forms gas phase dashpot (4), cavity between low head (17) and bottom tube sheet (18) forms heat exchanging fluid dashpot (14), cavity between top tube sheet (10) and bottom tube sheet (18) forms reaction bed district (20),
The sidewall of reaction bed district (20) offers material import and export (11), heat exchanging fluid upper cover (2) roof offering gas phase entrance (3) and communicate with reaction bed district (20) exports (5), and the diapire of low head (17) is offered heat exchanging fluid entrance (16);
Be provided with in reaction bed district (20) for the coil hot switching path (12) by heat exchanging fluid, and be arranged in juxtaposition some row's fins (13) at the outer surface of this coil hot switching path (12).
2. the storage hydrogen reactor that is coupled with coil heat exchanger of a kind of fin according to claim 1, it is characterized in that, be provided with only for the filter screen (7) of hydrogen turnover in the upper surface of top tube sheet (10), the thickness of filter screen (7) is 0.5 ~ 1mm, and aperture is 400 ~ 500 orders.
3. the storage hydrogen reactor that is coupled with coil heat exchanger of a kind of fin according to claim 1, it is characterized in that, the screw pitch of coil hot switching path (12) and the ratio of screw diameter are 0.333, and fin (13) is distributed on the outer surface of coil hot switching path (12) evenly and at intervals.
4. the storage hydrogen reactor that is coupled with coil heat exchanger of a kind of fin according to claim 1, it is characterized in that, upper cover (2) sidewall offers gas phase dashpot exhaust outlet (8).
5. the storage hydrogen reactor that is coupled with coil heat exchanger of a kind of fin according to claim 1, it is characterized in that, the upper some gas phase ducts (25) of gathering of top tube sheet (10), gas phase duct (25) is with coaxial annular form around top tube sheet axle central distribution, and aperture is 3 ~ 5mm.
6. the storage hydrogen reactor that is coupled with coil heat exchanger of a kind of fin according to claim 1, it is characterized in that, with reaction bed district (20) sidewall of material import and export (11) relative side is provided with some temperature tubes (19) for measuring metal hydride bed reaction temperature.
7. the storage hydrogen reactor that is coupled with coil heat exchanger of a kind of fin according to claim 6, is characterized in that, temperature tube (19) interval 45mm each other.
8. the storage hydrogen reactor that is coupled with coil heat exchanger of a kind of fin according to claim 1, it is characterized in that, upper cover (2) and all adopt flange (22) to be connected between low head (17) with housing (1), and seal with flange seal ring (24).
9. the storage hydrogen reactor that is coupled with coil heat exchanger of a kind of fin according to claim 1, is characterized in that, is also provided with brace type bearing (15) in low head (17) bottom.
10. the reactor assembly of the hydrogen storage media be made up of the storage hydrogen reactor in claim 1 ~ 9 described in any one, it is characterized in that, comprise storage hydrogen reactor, hydrogen source gas cylinder (26) and thermostatical oil bath (31), the pipeline that thermostatical oil bath (31) is connected with storage hydrogen reactor is provided with delivery pump (30), flow control valve (V4), flowmeter (29) successively; The pipeline that hydrogen source gas cylinder (26) is connected with storage hydrogen reactor is provided with pressure-reducing valve (V1), triple valve (V2), Pressure gauge (28) and pressure-control valve (V3) successively; Vavuum pump (27) is connected with triple valve (V2) by pipeline.
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| CN111085147A (en) * | 2018-10-24 | 2020-05-01 | 中国石油化工股份有限公司 | Reaction device and method for preparing styrene series alternating copolymerization microspheres |
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