CN104587945A - Regular catalytic packing in catalytic distillation column and preparation method of regular catalytic packing - Google Patents
Regular catalytic packing in catalytic distillation column and preparation method of regular catalytic packing Download PDFInfo
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- CN104587945A CN104587945A CN201510034722.3A CN201510034722A CN104587945A CN 104587945 A CN104587945 A CN 104587945A CN 201510034722 A CN201510034722 A CN 201510034722A CN 104587945 A CN104587945 A CN 104587945A
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Abstract
The invention relates to a regular catalytic packing in a catalytic distillation column and a preparation method of the regular catalytic packing. The regular catalytic packing is prepared from a catalytic packing unit, wherein the catalytic packing unit consists a component I and a component II; the component II is a catalyst cloth bag which is sewed by spun silk cloth, nylon cloth or dacron cloth, the component I and the component II are alternately slantingly arranged in reverse directions respectively and are bound into a cylinder shape to form an efficient catalytic distillation packing unit. According to the regular catalytic packing and the preparation method disclosed by the invention, the catalyst cloth bag and a corrugated packing are slantingly arranged in reverse directions, so that the residence time of a reactant in the catalyst cloth bag can be prolonged, reaction is facilitated, the utilization ratio of the catalyst is increased, and the use amount of the catalyst is reduced; the reaction residence time of the reactant in the catalytic packing can be changed by regulating the inclination angle of the catalyst cloth bag; while, as the component I and the component II are alternately arranged, the vapor-liquid mass transfer process can be enhanced, and thus vapor and liquid alternately flow between a catalyst and a corrugated net repeatedly, and coupling action of separation and reaction is promoted.
Description
Technical field
The invention belongs to catalytic rectification process field, be specifically related to regulation catalytic filling and preparation method thereof in a kind of catalytic rectifying tower tower, also relate to optimization and the strengthening of mass transfer and separation process.
Background technology
Catalytic rectifying tower is a kind of chemical industry equipment be coupled by reaction and separation processes, so conversion zone filler must possess catalytic reaction function and vehicle repair major mass transfer function in tower simultaneously.Reactant is at conversion zone after catalyst reaction, and the product of generation is separated from reaction system in time, and break molecular balance restriction, driving a reaction carries out to positive direction, significantly improves reaction conversion ratio.In catalytic rectifying tower, the structure of conversion zone filler plays vital effect to reaction conversion ratio, separating effect, it requires that catalytic filler is while guarantee vehicle repair major fully mixes contact, respond between reactant and catalyst necessary time of contact and space can also be guaranteed, and can artificial adjustment.There is more greatly the carrying out utilizing and react in time of contact and space in theory.In current industrial production, solid catalyst mostly uses the ion exchange resin of fine granularity, molecular sieve or solid super-strong acid, and the type catalyst has the advantages such as specific area is large, reclaiming is easy.But solid catalyst particle is less, if be directly placed on tower tray, tower internal drop can be caused large, easy liquid flooding.In addition, by the impact of solid catalyst self-condition, regular shape cannot be made to reduce fluid flow resistance in its surface.Therefore, how to strengthen vapour-liquid mass in conversion zone, make catalyst and reactant time of contact and space controlled, reduce tower internal drop, the problems such as easy operation have become the study hotspot of new and effective catalytic filler.
US Patent No. 4215011 proposes in beanbag catalyst being distributed into the strip be made up of the special cloth of synthesis, and wraps with Stainless Steel ripple silk net, is rolled into cylinder.In course of reaction, reactant enters cloth bag and catalyst exposure thus reaction is occurred.This configuration increases the less turbulence of fluid, and provide place for vapour-liquid mass.But the method is curling exists larger gap between layers, is difficult to avoid channel and short circuit phenomenon, makes catalyst utilization lower during Gas-liquid two-phase flow.
Chinese patent CN101024259A and CN102824890A all proposes Catalyst capsule to make tabular, the method of vertically alternately placing with structured packing, but Catalyst capsule adopts tabular in this method, contact area is less, be unfavorable for the transmission between catalyst and reactant, catalyst utilization is lower.The time of contact of catalyst and reactant is regulated by the amount adjusting catalyst, and controllability is lower, cannot the factor such as integrated catalyst consumption and tower pressure drop.In patent CN103752253A, catalyst filling sheet and structured packing sheet being replaced circumference is distributed in packing box, in this method ripple packing and Catalyst packing region spacer area larger, easily cause the short circuit of vapour phase flow path edge region, phase is contacted uneven.In patent CN103691387A and CN103721666A and the above patent, be and Catalyst capsule is vertically placed.The catalyst granules tied up in bag is little, and liquid flowing resistance is large.As shown in Figure 1, when spraying the liquid stream of getting off in tower through catalyst bag surface, most of fluid flows downward along the surface of cloth bag under gravity, and the fluid of the actual participation reaction entered in catalyst bag is then fewer.In addition, the fluid on outer surface can by radial diffusion to bag inner transmission matter.Because the mass transfer force of radial diffusion is less, the reactant generated in bag is also slow to the speed of external diffusion, so the catalyst use efficiency of whole catalyst bag is low.
Summary of the invention
The object of the invention is to the deficiency existed for prior art, propose one and be widely used, with low cost, make simple, regulation catalytic filling and preparation method thereof in efficient catalytic rectifying tower tower.
In order to realize the object of the invention, the present invention adopts following technical scheme:
Regulation catalytic filling in a kind of catalytic rectifying tower tower, be made up of catalytic filler unit, each catalytic filler unit is made up of assembly I and assembly II, assembly I and assembly II alternately, opposite direction oblique discharge restraint into tubular and form catalytic filler unit; Assembly I is the catalyst cloth bag by spun silk cloth or nylon cloth or woven dacron or the stitching of other materials, the solid particle catalysts such as Bu Baonei filling ion-exchange resin, molecular sieve, solid super-strong acid, the solid catalyst that Bu Baonei fills account for cloth inclusion long-pending 70% ~ 90%, cloth bag is of a size of long 45 ~ 100mm, wide 9 ~ 16mm; Assembly II is regular corrugation filler, can be: mellapak packing, the structured packings such as screen waviness packings, perforated plate corrugated filler, protruded corrugated sheet packing, honeycomb filler.
In catalytic filler unit, the angle of inclination of catalyst cloth bag can the factor such as combined reaction time of contact and tower internal drop regulate; Each catalytic filler unit can be processed as the catalytic filler of the cylindrical shape of corresponding size according to different tower diameter; Alternating discharge between each catalytic filler unit inner assembly I and assembly II, the horizontal tilt angle of assembly I is 45 ° to 60 °.
In rectifying column when placement of multiple layers or polylith catalytic filler unit, between upper and lower two catalytic filler unit, assembly I and assembly II is all staggered, and angle of inclination is contrary; Or mutually arranged vertically along catalyst bag arranged direction between upper and lower two catalytic filler unit, make vehicle repair major staggered flowing in tower; Totally be formed in horizontal and vertical upper assembly I, assembly II all replace, intersect discharge structure.
Beneficial effect of the present invention is:
1. assembly I(catalyst cloth bag) and assembly II(ripple packing) alternating discharge, increase vapour-liquid mass process, vehicle repair major alternately flows between catalyst cloth bag and ripple net, and the space availability ratio of catalytic filler is high, and catalyst amount is few; In each catalytic filler unit and between catalytic filler unit, assembly I and assembly II alternately places; Because catalyst cloth is surrounded by angle of inclination, when liquid is along (schematic diagram that fluid flows inside and outside catalyst bag as shown in Figure 2) during the flowing of catalyst cloth bag surface, the fluid L entered in catalyst bag can be divided into 3 parts: 1 is the amount L that catalyst Bu Bao top enters
1; 2 is the outer L ' liquid of catalyst bag enters in bag amount L by radial diffusion
2; 3 is outer L ' the liquid gravitates of catalyst bag, penetrates into the amount L in catalyst bag
3; This 3 partially liq L
1, L
2and L
3constitute the liquid holdup in catalyst bag; Therefore, under similarity condition, the liquid holdup of catalyst cloth bag of the present invention is larger; Liquid holdup realizes by the angle of inclination of adjustment catalyst cloth bag, makes the time of contact of reactant and catalyst elongated;
2. catalyst Bu Baonei reacts the product generated also has two kinds of forms when leaving catalyst bag: 1) by radial diffusion to the outer mass transfer of bag; 2) flow downward under gravity until shift out outside bag; Because catalyst cloth bag has certain angle of inclination, the path that product shifts out needed for catalyst inclusions system is shorter, and inside and outside catalyst bag, the efficiency of material mass transfer is higher, impel reactant and product constantly separated, it is more thorough that reaction is carried out, and therefore, the catalytic efficiency of catalyst bag is high.
Accompanying drawing explanation
Fig. 1 is the flow direction schematic diagram of catalyst Bu Baonei in prior art;
Fig. 2 is the flow direction schematic diagram of catalyst Bu Baonei of the present invention;
Fig. 3 is the cross-sectional view of catalytic filler of the present invention;
Fig. 4 is the front view of catalytic filler of the present invention;
Fig. 5 is the longitudinal section placed in catalytic filler multiple-unit tower of the present invention;
Number in the figure illustrates:
1-regular corrugation net filler (assembly II); 2-catalyst granules; 3-filler lock ring sheet;
Cloth bag (assembly I) tied up by 4-catalyst.
Detailed description of the invention
The present invention's the following example further illustrates the present invention, but protection scope of the present invention is not limited to the following example.
Embodiment 1
Choose the catalytic rectifying tower that tower internal diameter is 300 mm, the diameter of catalytic filler is 300 mm, see accompanying drawing 3, by multi-disc Catalyst capsule (assembly I), be alternately arranged forms this catalytic filler with regular corrugation filler (assembly II), wherein Catalyst capsule (assembly I) is produced as follows: the great Bu Bao first nylon cloth of one piece of 300 mm × 220 mm being folded in half into 300 mm × 110 mm, wrap at large cloth the parallel lines that picture one group of horizontal tilt angle is 60 ° with the right angle triangle containing 60 °, horizontal interval between two parallel lines is 10 mm, with sewing machine along suturing with thread management, form one group of small catalyst cloth bag, interior filling male ion-exchange resin NKC-9, account for 90% of small catalyst cloth bag cumulative volume, seal with sewing machine, form a Catalyst capsule (assembly I), adopt and use the same method, the catalyst cloth bag sheet that length is different can be sewed,
As shown in Figure 4, every sheet catalyst cloth bag and every sheet screen waviness packings tilt alternating discharge in the other direction, until regulation catalytic filling is full of tower tray, then use stainless steel lock ring sheet fixed-type, form regulation catalytic filling; This regulation catalytic filling can strengthen the time of staying of reactant at catalyst bag, is conducive to the carrying out reacted, and increases the utilization ratio of catalyst; The angle of inclination of the catalyst parcel of every sheet catalyst Bu Baonei is determined when sewing up, simple to operation.
When described catalytic filler unit is placed in tower, as shown in Figure 5, it is contrary with upper and lower two unit angles of inclination when in tower, each catalytic filler unit is stacked, and assembly I, II are alternately, make vehicle repair major in tower with shape flowing, totally formed axis, radial component I, II alternately, intersect discharge, equilibrium tower internal drop like this, effectively prevent vapour-liquid short circuit, add the separative efficiency of time of contact and tower.
Embodiment 2
Choose the catalytic rectifying tower that tower internal diameter is 300 mm, the diameter of catalytic filler is 300 mm, see accompanying drawing 3, by multi-disc Catalyst capsule (assembly I), be alternately arranged forms this catalytic filler with regular corrugation filler (assembly II), wherein Catalyst capsule (assembly I) is produced as follows: the great Bu Bao first the spun silk cloth of one piece of 300 mm × 220 mm being folded in half into 300 mm × 110 mm, wrap at large cloth the parallel lines that picture one group of horizontal tilt angle is 60 ° with the right angle triangle containing 60 °, horizontal interval between two parallel lines is 10 mm, with sewing machine along suturing with thread management, form one group of small catalyst cloth bag, interior filling solid super-strong acid, account for 70% of small catalyst cloth bag cumulative volume, seal with sewing machine, form a Catalyst capsule (assembly I), adopt and use the same method, the catalyst cloth bag sheet that length is different can be sewed,
As shown in Figure 4, every sheet catalyst cloth bag and every sheet mellapak packing tilt alternating discharge in the other direction, until regulation catalytic filling is full of tower tray, then use stainless steel lock ring sheet fixed-type, form regulation catalytic filling; This regulation catalytic filling can strengthen the time of staying of reactant at catalyst bag, is conducive to the carrying out reacted, and increases the utilization ratio of catalyst; The angle of inclination of the catalyst parcel of every sheet catalyst Bu Baonei is determined when sewing up, simple to operation.
When described catalytic filler unit is placed in tower, as shown in Figure 5, it is contrary with upper and lower two unit angles of inclination when in tower, each catalytic filler unit is stacked, and assembly I, II are alternately, make vehicle repair major in tower with shape flowing, totally formed axis, radial component I, II alternately, intersect discharge, equilibrium tower internal drop like this, effectively prevent vapour-liquid short circuit, add the separative efficiency of time of contact and tower.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (5)
1. regulation catalytic filling in a catalytic rectifying tower tower, it is characterized in that: described regulation catalytic filling is made up of catalytic filler unit, each catalytic filler unit is made up of assembly I and assembly II, assembly I and assembly II alternately, oblique discharge restraint into tubular and form catalytic filler unit in the other direction; Described assembly I is catalyst cloth bag, and assembly II is regular corrugation filler.
2. regulation catalytic filling in catalytic rectifying tower tower according to claim 1, it is characterized in that: described catalyst Bu Baonei fills solid catalyst particle, adopt spun silk cloth, nylon cloth, woven dacron to sew up to make, the solid catalyst that Bu Baonei fills account for cloth inclusion long-pending 70% ~ 90%, cloth bag is of a size of long 45 ~ 120mm, wide 9 ~ 16mm.
3. regulation catalytic filling in catalytic rectifying tower tower according to claim 1, is characterized in that: described regulation catalytic filling shape is cylinder, and its diameter can carry out adjustment change according to different tower diameter.
4. regulation catalytic filling in catalytic rectifying tower tower according to claim 1, is characterized in that: assembly I and assembly II alternating discharge in each catalytic filler unit, and the horizontal tilt angle of assembly I is 45 ° ~ 60 °.
5. regulation catalytic filling in catalytic rectifying tower tower according to claim 1, is characterized in that: in rectifying column during placement of multiple layers catalytic filler unit, between upper and lower two catalytic filler unit, assembly I and assembly II is all staggered, and angle of inclination is contrary; Or it is mutually arranged vertically along catalyst cloth bag placement direction between upper and lower two catalytic filler unit; Totally be formed in horizontal and vertical upper assembly I, II all replace, intersect discharge structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510034722.3A CN104587945A (en) | 2015-01-24 | 2015-01-24 | Regular catalytic packing in catalytic distillation column and preparation method of regular catalytic packing |
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| CN201510034722.3A CN104587945A (en) | 2015-01-24 | 2015-01-24 | Regular catalytic packing in catalytic distillation column and preparation method of regular catalytic packing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186270A (en) * | 2016-08-02 | 2016-12-07 | 胡积宝 | A kind of preparation method of opto-electronic conversion catalytic filler |
| CN106512914A (en) * | 2015-09-15 | 2017-03-22 | Ifp新能源公司 | Optimized packing structure for fluid contacting column and manufacturing method |
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| US4302356A (en) * | 1978-07-27 | 1981-11-24 | Chemical Research & Licensing Co. | Process for separating isobutene from C4 streams |
| US4731229A (en) * | 1985-05-14 | 1988-03-15 | Sulzer Brothers Limited | Reactor and packing element for catalyzed chemical reactions |
| US5073236A (en) * | 1989-11-13 | 1991-12-17 | Gelbein Abraham P | Process and structure for effecting catalytic reactions in distillation structure |
| CN1116132A (en) * | 1994-01-31 | 1996-02-07 | 化学研究及许可公司 | Catalytic distillation structure |
| CN1127480A (en) * | 1993-06-11 | 1996-07-24 | 化学研究及许可公司 | Catalytic distillation structure |
| CN102824890A (en) * | 2012-09-18 | 2012-12-19 | 天津大学 | Catalytic distillation filler with alternative flow structure |
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2015
- 2015-01-24 CN CN201510034722.3A patent/CN104587945A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4302356A (en) * | 1978-07-27 | 1981-11-24 | Chemical Research & Licensing Co. | Process for separating isobutene from C4 streams |
| US4731229A (en) * | 1985-05-14 | 1988-03-15 | Sulzer Brothers Limited | Reactor and packing element for catalyzed chemical reactions |
| US5073236A (en) * | 1989-11-13 | 1991-12-17 | Gelbein Abraham P | Process and structure for effecting catalytic reactions in distillation structure |
| CN1127480A (en) * | 1993-06-11 | 1996-07-24 | 化学研究及许可公司 | Catalytic distillation structure |
| CN1116132A (en) * | 1994-01-31 | 1996-02-07 | 化学研究及许可公司 | Catalytic distillation structure |
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| 刘乃鸿: "《工业塔新型规整填料应用手册》", 31 December 1993, 天津大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512914A (en) * | 2015-09-15 | 2017-03-22 | Ifp新能源公司 | Optimized packing structure for fluid contacting column and manufacturing method |
| CN106186270A (en) * | 2016-08-02 | 2016-12-07 | 胡积宝 | A kind of preparation method of opto-electronic conversion catalytic filler |
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Application publication date: 20150506 |