CN104399272B - A kind of omnidistance reaction formula reactive distillation device - Google Patents
A kind of omnidistance reaction formula reactive distillation device Download PDFInfo
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- CN104399272B CN104399272B CN201410643528.0A CN201410643528A CN104399272B CN 104399272 B CN104399272 B CN 104399272B CN 201410643528 A CN201410643528 A CN 201410643528A CN 104399272 B CN104399272 B CN 104399272B
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Abstract
The present invention discloses a kind of omnidistance reaction formula reactive distillation device, it comprises tower reactor and tower body, described tower body is fixedly connected on the upside of tower reactor, described tower reactor is provided with feeding port and the sewage draining exit of separation tower body both sides, the top of described tower body is provided with rectifying outlet, this tower body inner along its height direction from bottom to top successively interval catalyst layer and rectifying orifice layer are set, the lower surface of described tower reactor is fixedly connected with at least one ultrasonic stirrer, and the supersonic sensing rod that described ultrasonic stirrer is provided with is built in tower reactor. The present invention can arrange catalyst loading flexibly, increases the reaction area of reactant, it is to increase catalyzed reaction rate, it is to increase rectifying purity, the productivity that final acquisition is desirable.
Description
Technical field
The present invention relates to a kind of chemical production equipment, specifically relate to the board-like reactive distillation device of the chemical reaction in Chemical Manufacture, gas-liquid phase transition, heat and mass.
Background technology
Reactive distillation is process procedure common in modern chemical industry production process. Rectifying tower and tower reactor are two kinds of equipment the most important in rectification process, and rectification effect is had material impact by its structure. Reactive distillation column is the one of rectifying tower, and design of optimizing structure, promotion reaction carry out being the important means improving reactive distillation effect. The reactive distillation run in current Chemical Manufacture mainly adopts to optimize catalyzer type selecting and modes of emplacement and improve the means such as alr mode and improves reactive distillation effect.
Catalyzer is placed and is mainly contained following several method:
1. pelleted catalyst and the mixed dress of inert filler, this kind of method advantage is convenient disassembly, but the granules of catalyst piled up makes resistance to flow in tower increase.
2., at tower outer setting reactor, do not affect gas-liquid channel on column plate, but operation more complicated.
3. granules of catalyst puts into dull and stereotyped interlayer, and advantage is that heat and mass is effective, but handling trouble.
4. prepare porous honeycomb curing catalysts layer, adopt this kind of mode catalystic material, both can increase catalysis area, itself can also use as rectifying orifice plate simultaneously, reactant mixing upflowing vapor and dropping liq all can uninterruptedly be reacted in flow process, it is to increase reactivity.
Alr mode mainly contains:
1. mechanical stirring, adopts churned mechanically mode to promote that reactant mixes. This kind mode structure is simple, whipping performance good, efficiency height, adaptation material scope are wide, but it is very little that promotion is improved catalytic effect effect, and it is relatively big to take space, keeps in repair complicated.
2. fluid agitation, is divided into gas stirring and liquid agitation. This kind of mode good mixing effect, but reactive distillation mode is mixed and is not suitable for.
3. ultrasonic stirring, the producible a large amount of small bubbles of hyperacoustic cavatition increase different reactant contact area, study proof simultaneously, and ultrasonic wave can improve reactant self energy, reduce reaction activity, promote that reaction carries out.
Summary of the invention
For above deficiency, the present invention provides a kind of omnidistance reaction formula reactive distillation device, and it is combined with ultrasonic stirring by catalyst layer, effectively augmenting response area, raising reactivity, simplify structure design simultaneously, be easy to remove and repair.
In order to realize above-mentioned purpose, the present invention adopts following technical scheme:
A kind of omnidistance reaction formula reactive distillation device, it comprises tower reactor and tower body, described tower body is fixedly connected on the upside of tower reactor, described tower reactor is provided with feeding port and the sewage draining exit of separation tower body both sides, the top of described tower body is provided with rectifying outlet, this tower body inner along its height direction from bottom to top successively interval catalyst layer and rectifying orifice layer are set, the lower surface of described tower reactor is fixedly connected with at least one ultrasonic stirrer, and the supersonic sensing rod that described ultrasonic stirrer is provided with is built in tower reactor.
Adopt the mode whole production process reaction formula reactive distillation device that ultrasonic stirring combines with the catalyst layer of porous honeycomb, reactant and powder catalyst is filled in tower reactor, promote that reaction carries out by ultrasonic stirrer, the mixture of evaporation all needs the catalyst layer by porous in rectifying tower body rise and fall process, constantly catalyzed reaction in layer, whole process carries out catalyzed reaction.
Described tower reactor and tower body all adopt corrosion resistant material to make, and both adopt flange form to connect, and seal with seal washer, to ensure pressure-bearing property and the stopping property of cylinder body.
Described catalyst layer is the inside being directly fixed on tower body by the porous media material that catalyst preparing is shaping.
Described catalyst layer comprises the porous media material played a supportive role and the solid catalyst being positioned over described porous media material that are fixed on tower body inside.
In reactive distillation device tower body, major parts is by catalyst layer (porous media material shaping for catalyst preparing or the porous media material placement catalyzer played a supportive role) and rectifying orifice layer. Determine the structural parameter such as the thickness of porous medium, porosity, aperture according to the flow needed for reaction, the parameter such as reaction contact area time prepared by porous media material, to ensure reactant flow and the reactivity of rectifying, rectifying purity also there is certain promoter action simultaneously. Rectifying orifice layer according to the size in rectifying purity and the different designs orifice plate aperture of product, number equidimension parameter, to ensure the purity of product. It is inner that mode interval that porous medium layer and rectifying orifice layer adopt machinery to be affiliated to is placed in tower body.
Porous media material porosity according to reactive distillation property settings, must both ensure the rate of permeation of gas liquid, has again bigger reaction area and improves reactivity.
The rate of permeation of porous media materialWhereinFor the porosity of porous media material, d is the characteristic dimension in duct, and c is dimension is the constant of 1.
Then according to Darcy's law, flow in porous media materialWherein, S is the sectional area of porous media material, and �� p is the pressure difference at porous media material two ends, and �� is fluid viscosity, LmFor the thickness of porous media material.
For ensureing the rate of permeation of gas liquid, having again bigger reaction area to improve reactivity, porous medium catalyst preparing optimization is of a size of, porosity 15��25%, thickness 6��15mm, aperture 3��6mm simultaneously.
Below the liquid level that described supersonic sensing rod entirety is placed in tower reactor.
The lower surface of described tower reactor is provided with at least one open holes, and described open holes internal fixtion connects a sleeved, and supersonic sensing rod insertion tower reactor 13 is inner, and adopts bolt or cutting ferrule mode to be tightly connected with sleeved.
The blowdown section that described tower reactor is provided with sewage draining exit by flange with one is fixedly connected with.
Described feeding port is positioned at the top of tower reactor, and described sewage draining exit is positioned at the bottom of tower reactor, and described feeding port and sewage draining exit all adopt flange to control the folding of the two with the mode that coordinates of valve.
It is an advantage of the invention that:
1, to be fixed on tower body by the mode being affiliated to inner for the catalyst layer of porous honeycomb and rectifying orifice layer, can need the position that adjusts between adjacent two laminates and spacing according to techniques such as rectifying output, rectifying precision, and suitability is strong.
2, combined with ultrasonic stirring by catalyst layer, effectively augmenting response area, improve reactivity.
3, all adopting flange form to install structure between still tower and tower body and blowdown section, supersonic sensing rod adopts screw thread or bite type mode of connection with still tower, and structure is simple, convenient disassembly, and modularized production cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of omnidistance reaction formula reactive distillation device of the present invention;
Fig. 2 is the structural representation of tower body in Fig. 1;
Fig. 3 is the structural representation of tower reactor in Fig. 1;
Fig. 4 is the structural representation of the catalyst layer in Fig. 1;
Fig. 5 is the structural representation of ultrasonic stirrer in Fig. 1.
Description of reference numerals: 1, feeding port; 2, still tower interface; 3, tower body; 4, rectifying outlet; 5, catalyst layer; 6, rectifying orifice layer; 7, seal washer; 8, blowdown section and tower reactor interface; 9, sewage draining exit; 10, ultrasonic stirrer; 11, sleeved; 12, supersonic sensing rod; 13, tower reactor.
Embodiment
In order to understand the present invention better, below in conjunction with accompanying drawing, the invention will be further described, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, a kind of omnidistance reaction formula reactive distillation device, main body comprises tower body 3 and tower reactor 13, and the catalyst layer 5 being arranged in tower body and tower reactor, rectifying orifice layer 6, rectifying outlet 4, feeding port 1, sewage draining exit 9, still tower interface 2, blowdown section and tower reactor interface 8 and seal washer 7. Bottom and the still tower interface 2 of tower body 3 adopt the corrosion resistant materials such as stainless steel to make with tower reactor 13, and both are connected by flange mode, and arrange seal washer 7 in flange.
The top of tower body 3 arranges rectifying outlet 4, and in tower body 3, major parts is by catalyst layer and rectifying orifice layer. As shown in Figure 2, tower body 3 inside arranges catalyst layer 5 and rectifying orifice layer 6 in an interval from bottom to top. Catalyst layer 5 is directly fixed on tower body 3 inside by the porous media material that catalyst preparing is shaping; Or be support by the porous media material fixed, the fine catalyst of solid is placed above, by any one in these two kinds of modes, catalyst layer is arranged, catalyst loading can be set flexibly, increase the reaction area of reactant, improve catalyzed reaction rate, it is to increase rectifying purity, the productivity that final acquisition is desirable. Rectifying orifice layer 6 according to the size in rectifying purity and the different designs orifice plate aperture of product, number equidimension parameter, to ensure the purity of product. It is inner that mode interval that catalyst layer 5 and rectifying orifice layer 6 adopt machinery to be affiliated to is placed in tower body, can need the position between adjacent two laminates of adjustment and spacing according to techniques such as rectifying output, rectifying precision. Ensureing under tower body internal flow normal flow conditions, reduce spacing between adjacent laminate, it is possible to increase catalyst content, catalysis area and reactant and catalyzer duration of contact, such that it is able to raising rectifying precision and rectifying output.
As shown in Figure 3, the porous media material of catalyst layer 5 forms porous honeycomb structure, according to the shape of the property settings catalyst layer 5 of reactant in institute's rectifier, size size, i.e. porosity and aperture.Adjust tower body internal gas, liquid flow velocity and resistance to flow with catalysis area reaches allocation optimum by adjustment porosity and the size in aperture, ensure the best effect of reaction and rectifying. Specifically,
The rate of permeation of porous media materialWhereinFor the porosity of porous media material, d is the characteristic dimension in duct, and c is dimension is the constant of 1.
Then according to Darcy's law, flow in porous media materialWherein, S is the sectional area of porous media material, and �� p is the pressure difference at porous media material two ends, and �� is fluid viscosity, LmFor the thickness of porous media material.
For ensureing the rate of permeation of gas liquid, having again bigger reaction area to improve reactivity, porous media material is prepared optimization and is of a size of porosity 15��25%, thickness 6��15mm, aperture 3��6mm simultaneously.
As shown in Figure 4, tower reactor 13 adopts flange mode to be connected with the blowdown section of blowdown section with tower reactor interface 8, and arranges seal washer in flange. Feeding port 1 is positioned at the top of tower reactor 13, and sewage draining exit 9 is positioned at the bottom of tower reactor 13, and feeding port 1 and sewage draining exit 9 all adopt flange to control the folding of the two with the mode that coordinates of valve.
As shown in Figure 5, the ultrasonic stirrer 10 of different quantities is set according to internal liquid amount in tower reactor 13, the supersonic sensing rod 12 that ultrasonic stirrer is super is all placed in tower reactor below liquid level, ultrasonic stirrer 10 and tower reactor 13 adopt sleeve type structure to be tightly connected, namely an open holes is set in the downside of tower reactor 13, open holes internal fixtion one sleeved 11 (such as stainless steel sleeve pipe), it is inner that supersonic sensing rod 12 inserts tower reactor 13 by sleeved 11, and supersonic sensing rod 12 adopts bolt or cutting ferrule mode to be tightly connected with sleeved 11 simultaneously.
When carrying out reactive distillation, reactant in tower reactor 13 is stirred by ultrasonic stirrer 10, cavitation, a large amount of cavitation bubbles that liquid internal produces add the contact area of reactant and catalyzer, the energy of reactant molecule under ultrasonic vibration simultaneously own increases, reaction activity reduces, and facilitates the carrying out of reaction. The reactant and the resultant mixing steam that generate after reaction in tower reactor, evaporation enter tower body by the still tower interface 2 at tower reactor 13 top.
The reactant being evaporated and resultant mixing steam successively through catalyst layer 5 and rectifying orifice layer 6, react from top to bottom further. Mixture reaches tower body top by catalyst layer 5 from level to level and rectifying orifice layer 6, reactant exports 4 discharges with gaseous phase by rectifying, stream constantly falls in the reactant of the liquid state cooled, and from level to level by catalyst layer 5 and rectifying orifice layer 6, and constantly mix with the high-temperature gas mixture body risen, heat up, and constantly carry out catalyzed reaction at catalyst layer 5, it flow to still tower interface 2 be back to tower reactor 13 until falling.
Should be understood that, the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, it is possible to is improved according to the above description or converts, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (7)
1. an omnidistance reaction formula reactive distillation device, it is characterized in that, it comprises tower reactor (13) and tower body (3), described tower body (3) is fixedly connected on the upside of tower reactor (13), described tower reactor (13) is provided with feeding port (1) and the sewage draining exit (9) of separation tower body (3) both sides, the top of described tower body (3) is provided with rectifying outlet (4), this tower body (3) inner along its height direction from bottom to top successively interval catalyst layer (5) and rectifying orifice layer (6) are set, the lower surface of described tower reactor (13) is fixedly connected with at least one ultrasonic stirrer (10), the supersonic sensing rod (12) that described ultrasonic stirrer (10) is provided with is built in tower reactor (13),Described catalyst layer (5) is the inside being directly fixed on tower body (3) by the porous media material that catalyst preparing is shaping, and the porosity of described porous media material is 15��25%, thickness 6��15mm, aperture 3��6mm.
2. omnidistance reaction formula reactive distillation device according to claim 1, it is characterized in that, described tower reactor (13) and tower body (3) all adopt corrosion resistant material to make, both adopt flange form to connect, and seal with seal washer, to ensure pressure-bearing property and the stopping property of cylinder body.
3. omnidistance reaction formula reactive distillation device according to claim 1, it is characterised in that, the porosity of described porous media material is formulated according to reactive distillation characteristic, to ensure rate of permeation and the reactivity of gas liquid.
4. omnidistance reaction formula reactive distillation device according to claim 1, it is characterised in that, below the liquid level that described supersonic sensing rod (12) entirety is placed in tower reactor (13).
5. omnidistance reaction formula reactive distillation device according to claim 1 or 4, it is characterized in that, the lower surface of described tower reactor (13) is provided with at least one open holes, described open holes internal fixtion connects a sleeved (11), supersonic sensing rod (12) insertion tower reactor (13) is inner, and adopts bolt or cutting ferrule mode to be tightly connected with sleeved (11).
6. omnidistance reaction formula reactive distillation device according to claim 1, it is characterised in that, the blowdown section that described tower reactor is provided with sewage draining exit (9) by flange with is fixedly connected with.
7. omnidistance reaction formula reactive distillation device according to claim 1, it is characterized in that, described feeding port (1) is positioned at the top of tower reactor (13), described sewage draining exit (9) is positioned at the bottom of tower reactor (13), and described feeding port (1) and sewage draining exit (9) all adopt flange to control the folding of the two with the mode that coordinates of valve.
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| US5189001A (en) * | 1991-09-23 | 1993-02-23 | Chemical Research & Licensing Company | Catalytic distillation structure |
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