CN202116293U

CN202116293U - Catalyst filling machine for reaction tube of reburner

Info

Publication number: CN202116293U
Application number: CN201120223917XU
Authority: CN
Inventors: 周瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-28
Filing date: 2011-06-28
Publication date: 2012-01-18
Anticipated expiration: 2021-06-28

Abstract

The utility model relates to a catalyst filling machine for a reaction tube of a reburner, which comprises a hopper and a vertical guiding tube. The hopper is placed on a support frame, the vertical guiding tube is placed on a support base, an inlet is arranged at the top of the hopper, an outlet is arranged on a side surface of the lower portion of the hopper, the outlet of the hopper is communicated with the guiding tube, the lower portion of the guiding tube is externally connected with the reaction tube of the reburner, the support frame is fixed with a vibrator connected with the bottom of the hopper, an inclined plate which is inclined to the outlet of the hopper is arranged on the lower portion of the hopper, the lower end of the inclined plate is flush with the lower edge of the outlet of the hopper, a lifting device is disposed above the guiding tube, a lifting rope and a group of buffering devices axially arranged along the lifting rope at intervals are disposed in the guiding tube, the buffering devices are connected with the lifting device via the lifting rope, surfaces of the buffering devices are made of flexible materials, a group of flexible buffering walls arranged along the peripheries of the buffering devices respectively is further disposed in the guiding tube and fixed on the corresponding buffering devices, and a gap is reserved between each buffering wall and the corresponding buffering device. Catalyst filling density and uniformity can be effectively increased, and catalyst crushing rate is reduced.

Description

Receiver reaction tubes catalyst bagging machine

Technical field

The utility model relates to a kind of packing machine, especially a kind of receiver reaction tubes catalyst bagging machine.

Background technology

At present, countries in the world industry is growing to the demand of hydrogen, to the demand of different scales, can adopt different methods to obtain hydrogen.For smallest size (at 100Nm ³Below/the h), can adopt electrolytic process to produce hydrogen, perhaps buy commercially available bottled hydrogen; For food, electronics and medicine etc., they need hydrogen amount small scale and are the intermittent type demand, then can adopt ammonia/methanolysis to transform and produce hydrogen; For large-scale refinery and fertilizer plant, synthesis ammonia plant, Methanol Plant, hydrogen plant, oxygen installation, CO factory and reducing gas factory etc.; They need large-scale amounts of hydrogen; Must obtain through device for producing hydrogen, and this device for producing hydrogen normally adopts the receiver of steam reforming technology.

The working efficiency of receiver and reaction tubes life-span are depended on the degree of uniformity and the solid degree of its reaction tubes inner catalyst filling, so the stacking form of catalyzer in the receiver reaction tubes is extremely important.If the granules of catalyst distortion forms wedge shape and piles up, when perhaps forming arch, bridge shape structure, will form invalid space at the catalyst particles intergranular.Based on the shape of granules of catalyst, said structure causes the space to be difficult to eliminate in case appearance will become very firm structural framing.

Do not have catalyzer in invalid gap, sufficient reaction (this reaction is thermo-negative reaction) just can not take place in the mixed gas of virgin gas/steam herein, and this also just means, can't absorb heat energy according to the rate of heat transfer of design here.If invalid space is positioned near the reaction tubes tube wall, the heat energy in this place tube wall outside just can't be absorbed so, thereby causes here tube wall to cross thermosetting " hot spot region ".Because the metallurgical limit of reaction tubes normal working temperature and its material is very approaching, even if general superheat (possibly only raise 10-20 ℃) all will greatly shorten the working life of receiver reaction tubes.If it is inner that invalid space is positioned at the catalyzer interstitital texture, though be unlikely to cause tube wall overheated, can influence the thermograde between tube wall to reaction tubes axis, and cause the catalyzer local superheating; When receiver moves under lower steam/hydrocarbons ratio (steam/carbon ratio) operating mode; Carbon laydown can take place here, i.e. " knot carbon " phenomenon, and therefore this part catalyzer also can lose activity; Finally make to occur " torrid zone " in the reaction tubes, and then influence receiver working efficiency and reaction tubes life-span.

The used catalyzer of receiver is very enervated, and when granules of catalyst during from the height free-falling more than 1 meter, they are easy to receive physical hazard.Because receiver reaction tubes height about 10-13 rice, therefore must not adopt the mode that directly falls from receiver reaction tubes top to load catalyzer usually simply.

In existing filling method, once using the most extensively, also being simultaneously the most simply is that the socks pocket type is loaded method.To be seated in earlier not only in the thin but also long socks bag, each socks bag diameter must be than about the little 15mm of tube inner diameter, and all will load the catalyzer of same predetermined amount in each socks bag; After filling finishes, get up, through knot of knot, perhaps pass one " live line button " again, the other end that is tied to the socks bag to the bigger thin pole of intensity or rope from its top fold; Continue a folding end of socks bag in the reaction tubes then, and let it fall into the reaction tubes innermost as far as possible, then firmly drag thin pole or rope resolutely; Open socks bag bottom; This moment, catalyzer will be transferred in the reaction tubes from the socks bag, released the socks bag at last, accomplished filling.This method requires high to filling workman's skill level, thereby the maloperation meeting produces that the catalyzer height of drop differs or falls to causing problems such as fragmentation, density unevenness is even up and down in advance; In addition, in the filling process, need constantly perhaps to vibrate reaction tubes with vibrating device with hammer drumming reaction pipe, tight catalyst loading as far as possible, avoid forming invalid space, be filled into predetermined height until the pipe inner catalyst.But, knock or the vibration meeting causes certain damage to reaction tubes, can cause reaction tubes to move top, back cracking for a long time, therefore, it is superseded that this method has been tending towards.

Find through retrieval; Application number is the method and apparatus that 94113082.7 Chinese invention patent discloses a kind of uniform loading of catalyst tubes; Its method comprises through two or more minutes flow steps incoming flow and each shunting that obtains is divided at least two plumes, on the incoming flow introducing tube sheet of shunting with granules of catalyst that equates basically with some grain fluxs and speed; Its equipment comprises the leveling board of many each intervals; Have some equidimensions and separated by a distance and hole spacing on each plate; So that these holes the vertical projection on the adjacent panel not with this plate on the hole concentric; The quantity of plate mesopore increases a hole at least subsequently, thereby becoming a mandarin of granules of catalyst is divided into the shunting of accelerating through these holes.But this equipment only is absorbed in evenly filling of shunting realization, and any measure of catalyzer disruptive that prevents is not provided.

Application number is the method that 200410078601.0 Chinese invention patent application discloses a kind of loading catalyst, and this method comprises: in reaction tubes, insert a kind of chain type material, make the lower position of chain type material be higher than the upper end of catalyst layer; And in the reaction tubes of multitubular reactor of fixed bed loading catalyst.Though this patent is pointed out the chain type material and can reduce the whereabouts speed of catalyzer that in fact the main effect of this chain type material is partition space, forms catalyzer whereabouts track, can not realize effective shock absorption, can not play the effect of even filling.

Application number is that 200480023666.3 Chinese invention patent discloses a kind of method that is less than or equal to the standpipe of 50mm with granules of catalyst filling internal diameter; Comprise that will fill supplementary unit introduces standpipe; Wherein fill supplementary unit and comprise flexible prolate body, and the ratio of the xsect of flexible prolate body and standpipe xsect is 0.003-0.08; And granules of catalyst introduced standpipe.The flexible prolate body that this method is introduced mainly plays partition space, forms catalyzer whereabouts track, can not realize effective shock absorption equally, can not play the effect of even filling.

It is a kind of with the tools for loading of solid particulate distributions in the pipe that application number is that 200780009292.3 Chinese invention patent application discloses; Comprise center part; A plurality of substantially the same pivotal connection along the center part placement; Each pivotal connection comprises at least two rigidity and opposite arm, and protruding and each pivotal connection is different with the rotation of adjacent pivotal connection from center part with 90 degree basically at least two reverse directions for this arm.Because what this instrument vibroshock stretched out is arm-shaped part; Can only play cushioning effect to the catalyzer that drops down onto on the arm-shaped part; Those catalyzer that do not drop down onto on the arm-shaped part can continue to fall, and perhaps directly drop down onto the pipe end until the arm-shaped part that runs into certain vibroshock, therefore; This instrument can not carry out damping to all catalyzer, can't play complete provide protection.

Application number is device and the filling method that 200710196071.3 Chinese invention patent application discloses a kind of loaded particles catalytic material; Be provided with diameter in its device less than the catalyst reaction bore and have the filling flexible pipe of internal screw track, its key is to join granules of catalyst in the filling flexible pipe at a predetermined velocity.But the filling flexible pipe of this device is to be formed by connecting by joint, and life-time service comes off easily; In addition, the effect of its helical orbit is exactly the range ability that increases catalyzer, and catalyzer falls and still to be similar to uniformly accelerated motion, and the buffer deceleration effect is limited, so granules of catalyst finally is not with the low speed reaction tubes of packing into, is difficult to avoid catalyst breakage.

The utility model content

The utility model technical problem to be solved is: overcome the problem that prior art exists, a kind of receiver reaction tubes catalyst bagging machine that catalyzer low speed is evenly loaded is provided.

The technical scheme that the utility model solves its technical problem is following: a kind of receiver reaction tubes catalyst bagging machine; Comprise the hopper that is placed on the bracing frame and be placed in the vertical guide pipe on the supporting seat, said hopper top is provided with import, lower side is provided with outlet; The outlet of said hopper is communicated with guide pipe, the external receiver reaction tubes in said guide pipe bottom; It is characterized in that, be fixed with the vibrator that is connected with the hopper bottom surface on the support frame as described above; Said hopper bottom has the swash plate of tendency hopper outlet, and the low side of said swash plate is concordant with the hopper outlet lower rim; Said guide pipe top is provided with lifting device, is provided with hoist cable in the said guide pipe, reaches one group of snubber that is provided with along the hoist cable axially spaced-apart, and said each snubber links to each other with lifting device through hoist cable; Said each snubber surface is processed by flexible materials; Also be provided with one group of flexible buffer wall that circumferentially is provided with along each snubber respectively in the said guide pipe, said each cushion wall is fixed on the respective buffer, also and between the respective buffer leaves the space.

The utility model adopts can be with the movable hopper of vibrator up-down vibration;, the swash plate of feed hopper bottom can constantly see and prevent catalyzer off catalyzer stop up in the exit in a steady stream under cooperating by outlet; Thereby the even blanking of control catalyst; And blanking speed is determined, can be regulated as required by the vibrator Oscillation Amplitude, and these all are to realize the evenly prerequisite of filling effect; One group of flexible buffer device and flexible buffer wall in the guide pipe on the hoist cable can form multi-buffer (wherein; Space between snubber and the cushion wall can supply granules of catalyst to pass through); Can effectively reduce catalyzer whereabouts speed; And make catalyzer evenly insert the receiver reaction tubes with enough low speed, be to realize the evenly further guarantee of filling effect; Lifting device is used for raising sling and snubber, makes snubber and catalyst bed end face keep certain distance, avoids snubber to be buried by catalyzer, further guarantees the even filling of catalyzer.Simultaneously, adopt said structure can prevent that granules of catalyst is broken, thereby reduce the percentage of damage of granules of catalyst.

During use, elder generation is with guide pipe and respective reactor is joined and with both center-aligned, again the hoist cable in the guide pipe is dropped to proper height in the reaction tubes together with snubber and cushion wall, makes least significant end snubber and reaction tubes bottom keep certain distance; Then with granules of catalyst from the import hopper of packing into, simultaneously, hopper is up-down vibration under the vibrator effect, catalyzer is with hopper vibratory drive to outlet and get into guide pipe; Under the buffering layer by layer of snubber and cushion wall, catalyzer low speed falls into reaction tubes internal catalyst bed surface; In the filling process, lifting device makes least significant end snubber and reaction tubes internal catalyst bed end face remain certain distance, until loading end at governor circuit control raising sling at the uniform velocity or intermittently down.

The further perfect technical scheme of the utility model is following:

1, said each snubber flare shape, said each snubber away from the cross-sectional area of the part of lifting device greater than cross-sectional area near the part of lifting device; Said each snubber is fixedly connected with hoist cable is coaxial, and curved surface is caved in into to this snubber axis symmetry in the side of said each snubber.

Adopt the snubber of said structure can significantly improve buffering effect, can also avoid catalyzer to gather, can further improve the filling effect of catalyzer at the buffer table area.

2, said each snubber surface also have one group with the co-axial annular projection of this snubber or one group along the radially-arranged raised strip of this snubber or one group of granular convexity.

This structure can further reduce material whereabouts speed, all has significant deceleration effect.

3, said each cushion wall exceeds 20mm at least respectively than the end face and the bottom surface of respective buffer.

Adopt this structure, can play better shock absorption the catalyzer that falls.

4, said each snubber extends radially outward out one group of tenon limit respectively, and said each cushion wall is fixedly connected with the tenon limit of respective buffer; Said cushion wall cross section is regular polygon or annulus.

Research shows, adopts this structure can significantly improve buffering effect.

5, said each buffer size is identical; Said each snubber top minimum diameter is that 0.4-1.0mm, bottom maximum diameter are 0.3-0.6 times of reaction tube diameter, and the inboard distance of said each snubber lower rim and corresponding cushion wall is 1.5-3.5 a times of institute's loading catalyst particle diameter.

Adopt the snubber of this size, can realize better evenly loading effect.

6, said each snubber is spacedly distributed; The distance of said each snubber bottom surface and adjacent below snubber end face is 1.0-2.0m.

Adopt this structure, the effect of slowing down step by step optimum can realize better evenly loading effect.

7, said hoist cable diameter is 5-20mm.

Find that after deliberation the hoist cable of this diameter range has the deceleration effect to granules of catalyst.

8, said hopper outlet is communicated with guide pipe through the blanking flexible pipe; The said hopper outlet outside is provided with flashboard.

The blanking flexible pipe can play a protective role to catalyzer, and flashboard is used for control catalyst lets pass, thereby further guarantees evenly filling.

9, the angle of said swash plate and hopper bottom surface is 5-25 °; Said swash plate has sieve aperture near the part of hopper outlet, and said screen-aperture is 3-6mm; Said swash plate below is provided with the control of dust drawer.

Adopt this structure can dust in the granules of catalyst or broken granules of catalyst be screened out; And efficiency of screen out is high; Can further reduce granules of catalyst in the catalyst bed percentage of damage, reduce invalid components contents in the reaction tubes internal catalyst bed, and further guarantee evenly to load effect.

The utility model is simple in structure, design ingenious, be easy to the carrying and dismounting, simple to operate; Can granules of catalyst low speed evenly be filled in the reaction tubes, load effective, efficient is high, can effectively improve the packing density and the uniformity coefficient of granules of catalyst, and reduces the percentage of damage of granules of catalyst in the filling process; Also can avoid dust in the catalyzer and the broken granules of catalyst reaction tubes of packing into.After adopting the structure of the utility model, can guarantee that catalyst bed has good filling effect in the reaction tubes, reach and optimize receiver reaction tubes serviceability and the purpose that increases the service life.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment packing machine.

Fig. 2 is the schematic top plan view of Fig. 1 embodiment snubber and cushion wall, and A is the Polygons cushion wall, and B is the loop buffer wall.

Fig. 3 is the synoptic diagram of Fig. 1 embodiment swash plate.

Fig. 4 is the schematic perspective view of Fig. 1 embodiment snubber.

Fig. 5 is the vertical view of Fig. 1 embodiment snubber, and A is for having annular projection, and B is for having raised strip, and C is for having granular convexity.

The enforcement synoptic diagram that Fig. 6 loads in reaction tubes for Fig. 1 embodiment.

Embodiment

With reference to the accompanying drawings and combine embodiment that the utility model is described in further detail.But the utility model is not limited to given example.

Embodiment

The receiver reaction tubes catalyst bagging machine substruction of present embodiment comprises the hopper 2 (the present embodiment hopper is a rectangular parallelepiped, also can select other shapes such as right cylinder, spheroid, irregular body) that is placed on the bracing frame 1 shown in Fig. 1-6; Be fixed with vibrator 12 (can be electronic or pneumatic vibrator unit) on the bracing frame 1, vibrator 12 is connected with hopper 2 bottom surfaces, can make hopper 2 up-down vibration.

Hopper 2 tops are provided with import 21, lower side is provided with outlet 22; Hopper outlet 22 outsides are provided with flashboard 28; Hopper 2 bottoms have the swash plate 23 of tendency hopper outlet 22, and the low side of swash plate 23 is concordant with hopper outlet 22 lower rims; Angle between swash plate 23 and hopper 2 bottom surfaces is 5-25 ° (preferred 10-20 a °, more preferably 15 °); Swash plate 23 has sieve aperture 231 near the part of hopper outlet 22; The aperture of sieve aperture 231 is 3-6mm, and concrete aperture can be decided as required; Swash plate 23 belows are provided with control of dust drawer 26.The Oscillation Amplitude of adjustment vibrator 12 can be controlled blanking velocity: the big blanking of Oscillation Amplitude is fast, and the little blanking of Oscillation Amplitude is slow; In addition, vibrator 12 can prevent that material from stopping up outlet 22 and causing blanking not smooth.

Also comprise the vertical guide pipe 3 that is placed on the supporting seat 4; Hopper outlet 22 is communicated with guide pipe 3 through blanking flexible pipe 27; Guide pipe 3 tops are provided with lifting device 32; Be provided with hoist cable 31 in the guide pipe 3, reach one group of snubber 33 that is provided with along hoist cable 31 axially spaced-aparts, each snubber 33 links to each other with lifting device 32 through hoist cable 31; Also be provided with one group of flexible buffer wall 34 that circumferentially are provided with along each snubber 33 respectively in the guide pipe 3, each cushion wall 34 be fixed on the respective buffer 33 and and respective buffer 33 between leave the space; The external receiver reaction tubes in guide pipe 3 bottoms; Hoist cable 31 diameters are 5-20mm.

Need to prove that lifting device 32 adopts existing apparatus, adopt control motor 321 control reels 322 scrollings through the hoist cable 31 that fixed pulley 323 transmits, realize the function of hoist cable with this such as present embodiment; Also can adopt other device, like the fixed pulley of manual control etc., as long as can realize the function of up-down hoist cable.

Each snubber 33 surface is processed by flexible materials (like existing flexible materialss such as flexiplast, flexible rubbers); Each snubber 33 extends radially outward out one group of tenon limit 331 respectively, and each cushion wall 34 is fixedly connected (can adopt existing mode of connection such as the tenon fourth of the twelve Earthly Branches is connected, draw-in groove connection, bolt connection) with the tenon limit 331 of respective buffer 33.

Each snubber 33 flare shape, each snubber 33 away from the cross-sectional area of the part of lifting device 32 greater than cross-sectional area near the part of lifting device 32; Each snubber 33 caves in into curved surface with hoist cable 31 coaxial fixed connections, the side of each snubber 33 to this snubber axis symmetry.Each snubber 33 surface also have one group with the co-axial annular projection 331 of this snubber or one group along the radially-arranged raised strip 332 of this snubber or one group granular protruding 333.

Each snubber 33 is measure-alike; Each snubber 33 top minimum diameter is that 0.4-1.0mm, bottom maximum diameter are 0.3-0.6 times of reaction tube diameter, and each snubber 33 lower rim and corresponding cushion wall 34 inboard distances are 1.5-3.5 times of institute's loading catalyst particle diameter.Each snubber 33 is spacedly distributed; The distance of each snubber bottom surface and adjacent below snubber end face is 1.0-2.0m.

Need to prove that snubber 33 can adopt the surface by the structure that flexible materials is processed, rest part is processed by rigid material, the structure that also can adopt surface and remaining part to process by flexible materials.

Each cushion wall 34 exceeds 20mm at least respectively than the end face and the bottom surface of respective buffer 33.Cushion wall 34 cross sections are regular polygon or annulus.

Snubber 33, tenon limit 331, cushion wall 34 surround space and the path that supplies granules of catalyst to pass through jointly, can play shock absorption.

Test shows, after the employing present embodiment structure, finally can drop to the catalyst bed surface with the speed that is lower than 2 meter per seconds through the buffered granules of catalyst.

In addition, present embodiment snubber bottom hollow, a plurality of snubbers can be folded into together easily, need not remove; Cushion wall can be pulled down from snubber, makes things convenient for snubber superimposed.

Present embodiment is particularly useful for the machinery filling of the receiver reaction tubes catalyzer of 70-160mm caliber.

Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. a receiver reaction tubes catalyst bagging machine comprises the hopper that is placed on the bracing frame and is placed in the vertical guide pipe on the supporting seat, and said hopper top is provided with import, lower side is provided with outlet; The outlet of said hopper is communicated with guide pipe, the external receiver reaction tubes in said guide pipe bottom; It is characterized in that, be fixed with the vibrator that is connected with the hopper bottom surface on the support frame as described above; Said hopper bottom has the swash plate of tendency hopper outlet, and the low side of said swash plate is concordant with the hopper outlet lower rim; Said guide pipe top is provided with lifting device, is provided with hoist cable in the said guide pipe, reaches one group of snubber that is provided with along the hoist cable axially spaced-apart, and said each snubber links to each other with lifting device through hoist cable; Said each snubber surface is processed by flexible materials; Also be provided with one group of flexible buffer wall that circumferentially is provided with along each snubber respectively in the said guide pipe, said each cushion wall is fixed on the respective buffer, also and between the respective buffer leaves the space.

2. receiver reaction tubes catalyst bagging machine according to claim 1 is characterized in that, said each snubber flare shape, said each snubber away from the cross-sectional area of the part of lifting device greater than cross-sectional area near the part of lifting device; Said each snubber is fixedly connected with hoist cable is coaxial, and curved surface is caved in into to this snubber axis symmetry in the side of said each snubber.

3. receiver reaction tubes catalyst bagging machine according to claim 2 is characterized in that, said each snubber surface also have one group with the co-axial annular projection of this snubber or one group along the radially-arranged raised strip of this snubber or one group of granular convexity.

4. receiver reaction tubes catalyst bagging machine according to claim 3 is characterized in that, said each cushion wall exceeds 20mm at least respectively than the end face and the bottom surface of respective buffer.

5. according to any described receiver reaction tubes catalyst bagging machine in the claim 1 to 4, it is characterized in that said each snubber extends radially outward out one group of tenon limit respectively, said each cushion wall is fixedly connected with the tenon limit of respective buffer; Said cushion wall cross section is regular polygon or annulus.

6. according to any described receiver reaction tubes catalyst bagging machine in the claim 1 to 4, it is characterized in that said each buffer size is identical; Said each snubber top minimum diameter is that 0.4-1.0mm, bottom maximum diameter are 0.3-0.6 times of reaction tube diameter, and the inboard distance of said each snubber lower rim and corresponding cushion wall is 1.5-3.5 a times of institute's loading catalyst particle diameter.

7. according to any described receiver reaction tubes catalyst bagging machine in the claim 1 to 4, it is characterized in that said each snubber is spacedly distributed; The distance of said each snubber bottom surface and adjacent below snubber end face is 1.0-2.0m.

8. according to any described receiver reaction tubes catalyst bagging machine in the claim 1 to 4, it is characterized in that said hoist cable diameter is 5-20mm.

9. according to any described receiver reaction tubes catalyst bagging machine in the claim 1 to 4, it is characterized in that said hopper outlet is communicated with guide pipe through the blanking flexible pipe; The said hopper outlet outside is provided with flashboard.

10. according to any described receiver reaction tubes catalyst bagging machine in the claim 1 to 4, it is characterized in that the angle of said swash plate and hopper bottom surface is 5-25 °; Said swash plate has sieve aperture near the part of hopper outlet, and said screen-aperture is 3-6mm; Said swash plate below is provided with the control of dust drawer.