CN103263885A - Device for improving biodiesel conversion rate - Google Patents

Device for improving biodiesel conversion rate Download PDF

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Publication number
CN103263885A
CN103263885A CN2013102380161A CN201310238016A CN103263885A CN 103263885 A CN103263885 A CN 103263885A CN 2013102380161 A CN2013102380161 A CN 2013102380161A CN 201310238016 A CN201310238016 A CN 201310238016A CN 103263885 A CN103263885 A CN 103263885A
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pipe
mixed liquor
reactor
circulation carrier
biodiesel
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CN103263885B (en
Inventor
吴苏喜
谭传波
闫帅航
刘瑞兴
宋斌
李慧
黄闪闪
宋艳秋
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Changsha University of Science and Technology
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Changsha University of Science and Technology
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Abstract

The invention relates to a production device of biodiesel, and in particular relates to a device for improving the biodiesel conversion rate. The device for improving the biodiesel conversion rate comprises a mixed liquid inlet pipe (1), a reaction kettle (2), heating devices (3), a mixed liquid circulating device and a mixed liquid spraying device; the mixed liquid circulating device consists of a peristaltic pump (8) and a mixed liquid circulating conveying pipe (9); the lower end of the mixed liquid circulating conveying pipe (9) is provided with the peristaltic pump (8); the peristaltic pump (8) is connected with a mixed liquid outlet pipe (6) at the lower end of the reaction kettle (2); the upper end of the mixed liquid circulating conveying pipe (9) is positioned in the middle upper part of the reaction kettle (2), and is communicated with the reaction kettle (2). The device for improving the biodiesel conversion rate provided by the invention can obviously improve the biodiesel conversion rate, shortens the reaction time greatly, is high in production efficiency, is good in quality and high in yield, and is high in economical benefit.

Description

A kind of device that improves the biodiesel conversion ratio
Technical field
The present invention relates to a kind of production equipment of biodiesel, relate in particular to a kind of device that improves the biodiesel conversion ratio.
Background technology
Production biodiesel device adopts ester-exchange technology at present, raw oil material produces thing diesel oil next life by esterification, technology such as distillation purification etc., but device therefor costliness, the reaction temperature height, main is that production efficiency is lower, thereby causes high energy consumption, expensive, and treatment process is many simultaneously, wherein discharge waste water, cause environmental pollution.
The day for announcing is that the patent No. on December 1st, 2010 is " a kind of biodiesel esterification device " of 201020130362.X, announced a kind of production of biodiesel device, it comprises by tank body, the outer heating jacket of tank body constitutes biodiesel esterification still and solvent recovery unit, be characterized in that a biodiesel esterification still arranges a cover solvent recovery unit, by the condenser for solvent in the solvent recovery unit, temporary jar of solvent and circulating pump make the solvent condenses of gas phase be converted into liquid phase solvent and refill reactor, and the solvent in the esterification cracking process is constantly replenished.Though this biodiesel esterification device can improve the biodiesel transforming degree, owing to need complex device such as condenser for solvent, the temporary jar of solvent, cost height.And the solvent condenses of gas phase is converted into liquid phase solvent and refills reactor, and this process is longer, and the reaction time does not reach optimum efficiency, though transform better quality, reaction efficiency improves not remarkable.
Summary of the invention
The objective of the invention is to overcome that the existing efficient of present production biodiesel device is low, cost is high, energy consumption is big, treatment process is many, with serious pollution weak point, thereby provide a kind of device that improves the biodiesel conversion ratio, its production efficiency height, simple in structure, pollution-free, low energy consumption, low cost, good quality and high output is suitable for utilizing the usefulness of animal and plant fat and waste oil production biodiesel.
The object of the present invention is achieved like this:
A kind of device that improves the biodiesel conversion ratio, it comprises entry to mixed solution pipe 1, reactor 2, heater 3, product sample tap pipe 4, products export pipe 5, mixture export pipe 6, liquid catalyst and byproduct of reaction outlet 7, thermometric instrument 12, manometer 13, reactor 2 upper end are provided with by entry to mixed solution pipe 1, thermometric instrument 12 and manometer 13, there are mixture export pipe 6 and byproduct of reaction outlet 7 in reactor 2 lower ends, near the taper seat place products export pipe 5 is arranged at reactor 2 cylinders, be connected with product sample tap pipe 4 on the products export pipe 5, the reactor 2 outside heaters 3 that are provided with all around, it is characterized in that: it also includes a mixed liquor EGR and a mixed liquor sprayer unit, described mixed liquor EGR is by peristaltic pump 8, mixed liquor circulation carrier pipe 9 is formed, peristaltic pump 8 is equipped with in the lower end of described mixed liquor circulation carrier pipe 9, described peristaltic pump 8 links to each other with the mixture export pipe 6 of reactor 2 lower ends, and the upper end of described mixed liquor circulation carrier pipe 9 is positioned at the middle and upper part of reactor 2 and communicates with reactor 2.
Preferably, described mixed liquor sprayer unit is an annular injection spray pipe 10, described annular injection spray pipe 10 is in reactor 2 inside, and link to each other with mixed liquor circulation carrier pipe 9 upper ends, described annular injection spray pipe 10 is provided with three row's high density spray holes 11, one row's high density spray holes 11 is wherein arranged bottom, and two row's high density spray holes 11 are distributed in bottom spray holes 11 the right and lefts and with spray holes 11 is at 45 bottom in addition.
Preferably, described mixed liquor sprayer unit comprises vertical injection spray pipe 14, the vapour cover 15 of the parallel upright that two rows are above, described vertical injection spray pipe 14 upper ends link to each other with mixed liquor circulation carrier pipe 9, the lower end links to each other with vapour cover 15, leave the gap between described vapour cover 15 and reactor 2 inwalls, have the hole corresponding with vertical injection spray pipe 14 on the described vapour cover 15, described vertical injection spray pipe 14 is the interlayer pipe of hollow, be full of mixed liquor in the interlayer, intermediate hollow partly is full of methanol steam, and spray nozzle 20 is housed on the hollow wall.
Preferably, described mixed liquor sprayer unit is made up of check valve 16, force (forcing) pump 17, spraying sheet 18 more than three layers, described check valve 16 and force (forcing) pump 17 are installed in mixed liquor circulation carrier pipe 9 upper ends, the interlayer thin slice that described spraying sheet 18 constitutes for upper and lower surface, the centre is full of mixed liquor, described spraying sheet 18 all links to each other with mixed liquor circulation carrier pipe 9, the spraying sheet 18 of the superiors one side down is provided with uniform spray holes 11, the following spraying sheet 18 equal two sides of the superiors are provided with spray holes 11, also are provided with the big hole 19 of mutual dislocation.
Operation principle of the present invention is as follows: mixed liquor (feedstock oil, methyl alcohol and liquid catalyst three's mixed liquor) enters reactor 2 through entry to mixed solution pipe 1, landing downwards, 3 heat effects of heater, feedstock oil, methyl alcohol is converted into biodiesel under catalyst action, in the course of reaction, partially liq methyl alcohol becomes methanol steam, mixed liquor by mixture export pipe 6 lower ends through peristaltic pump 8 and mixed liquor circulation carrier pipe 9, after annular injection spray pipe 10 atomizings, enter reactor 2 again again, mixed liquor after the atomizing and methanol steam carry out hybrid reaction, fall reactor 2 bottoms then, proceed liquid phase reactor, constantly circulation.After reaction finishes, standing demix, biodiesel is collected from products export pipe 5, and catalyst and byproduct of reaction are collected by catalyst and byproduct of reaction outlet 7.
Prior biological diesel production device all is to carry out liquid phase reactor in reactor 2, and in adding thermal process reactor, partially liq methyl alcohol becomes methanol steam, fails effectively to participate in reacting, and reacts not thorough, and transformation efficiency is not high, and is long with the reaction time, and productivity ratio is low.The present invention compares with prior biological diesel production device, and the biodiesel conversion ratio significantly improves, and by original 85%~88%, brings up to 92%~98%, also shortens to original about 40% with the reaction time.Because the present invention has liquid phase, two kinds of reactive modes of vapour-liquid two-phase, liquid phase reactor can take place in the mixed liquor that feedstock oil, methyl alcohol and liquid catalyst three are formed, can circulate spraying again and further carry out the vapour-liquid reaction with the methanol steam of liquid phase reaction course vaporized in part, the following backwardness can participate in liquid phase reactor again, constantly circulation, solved the halfway problem of esterification all the time, shorten the reaction time greatly, significantly improved production efficiency and quality.Whole process of production is sealing, no waste gas, waste water, refuse, also need not to establish in addition methanol vapor phase condensation retracting device.From as can be seen last, the present invention contrasts prior art and has following advantage: simple in structure, the small investment of (1) the present invention; (2) energy consumption of the present invention is low, and cost is low; (3) biodiesel conversion ratio of the present invention significantly improves, and the reaction time shortens greatly, the production efficiency height, and good quality and high output, economic benefit height, social benefit are good.
Description of drawings
Fig. 1 is the structural representation of embodiments of the invention 1.
Fig. 2 is the vertical view of the annular injection spray pipe of embodiment 1.
Fig. 3 is the cross-sectional view of the annular injection spray pipe of embodiment 1.
Fig. 4 is the structural representation of embodiments of the invention 2.
Fig. 5 is the partial enlarged drawing of embodiments of the invention 2.
Fig. 6 is the structural representation of embodiments of the invention 3.
Fig. 7 is the partial enlarged drawing of embodiments of the invention 3.
In the accompanying drawing, 1-entry to mixed solution pipe, 2-reactor, 3-heater, 4-product sample tap pipe, 5-products export pipe, 6-mixture export pipe, 7-liquid catalyst and byproduct of reaction outlet, 8-peristaltic pump, 9-mixed liquor circulation carrier pipe, 10-annular injection spray pipe, 11-spray holes, 12-thermometric instrument, 13-manometer, 14-vertical injection spray pipe, 15-vapour cover, 16-check valve, 17-force (forcing) pump, 18-spraying sheet, 19-big hole, 20-spray nozzle.
The specific embodiment
The present invention is further described below in conjunction with accompanying drawing.
Embodiment 1
As shown in Figure 1, a kind of device that improves the biodiesel conversion ratio, it comprises entry to mixed solution pipe 1, reactor 2, heater 3, product sample tap pipe 4, products export pipe 5, mixture export pipe 6, liquid catalyst and byproduct of reaction outlet 7, thermometric instrument 12, manometer 13.Reactor 2 minutes is two parts up and down, and the upper end edge that keeps to the side has entry to mixed solution pipe 1, at the top opposite side thermometric instrument 12 and manometer 13 is arranged.There is mixture export pipe 6 reactor 2 lower ends, and mixture export pipe 6 lower ends are connected with liquid catalyst and byproduct of reaction outlet 7 simultaneously, and products export pipe 5 is arranged at reactor 2 taper seat places, and are connected with product sample tap pipe 4 on the products export pipe 5.There is 1 ~ 2 decimeter to top from mixed liquor circulation carrier pipe 9 from reactor 2 bottoms, wrapped up by heater 3 around whole.
A kind of device that improves the biodiesel conversion ratio, it also includes a mixed liquor EGR and a mixed liquor sprayer unit, described mixed liquor EGR is made up of peristaltic pump 8, mixed liquor circulation carrier pipe 9, peristaltic pump 8 is equipped with in the lower end of mixed liquor circulation carrier pipe 9, peristaltic pump 8 links to each other with the mixture export pipe 6 of reactor 2 lower ends, and the upper end of mixed liquor circulation carrier pipe 9 is positioned at the middle and upper part of reactor 2 and communicates with reactor 2.
As Fig. 2, shown in Figure 3, the mixed liquor sprayer unit is an annular injection spray pipe 10, annular injection spray pipe 10 is in reactor 2 inside, and link to each other with mixed liquor circulation carrier pipe 9 upper ends, annular injection spray pipe 10 is provided with three row's high density spray holes 11, one row's high density spray holes 11 is wherein arranged bottom, in addition two row's high density spray holes 11 are distributed in bottom spray holes 11 the right and lefts and with spray holes 11 is at 45 bottom, the liquid that its assurance sprays out can cover reactor 2 horizontal cross-sectional areas, fully contacts with the methanol steam that evaporates up from reactor 2 interior lower end.
Prior biological diesel production device all is to carry out liquid phase reactor in reactor 2, and in adding thermal process reactor, partially liq methyl alcohol becomes methanol steam, fails effectively to participate in reacting, and reacts not thorough, and transformation efficiency is not high.The present invention compares with prior biological diesel production device, the biodiesel conversion ratio significantly improves, by original 85%~88%, bring up to 92%~94%, because the present invention has liquid phase, two kinds of reactive modes of vapour-liquid two-phase, the mixed liquor of being made up of feedstock oil, methyl alcohol and liquid catalyst three can circulate and react.Mixed liquor enters reactor 2 through entry to mixed solution pipe 1, landing downwards, heater 3 heating, feedstock oil, methyl alcohol and liquid catalyst are converted into biodiesel, and in the course of reaction, partially liq methyl alcohol becomes methanol steam, mixed liquor by mixture export pipe 6 lower ends through peristaltic pump 8 and mixed liquor circulation carrier pipe 9, enter reactor 2 again again after annular injection spray pipe 10 atomizings, the mixed liquor after the atomizing and methanol steam carry out falling reactor 2 bottoms after the hybrid reaction, constantly circulation.After reaction finishes, standing demix, biodiesel is collected from products export pipe 5, and catalyst and byproduct of reaction are collected by catalyst and byproduct of reaction outlet.Whole process of production is sealing, no waste gas, waste water, refuse.
Embodiment 2
As shown in Figure 4, a kind of device that improves the biodiesel conversion ratio, it comprises entry to mixed solution pipe 1, reactor 2, heater 3, product sample tap pipe 4, products export pipe 5, mixture export pipe 6, liquid catalyst and byproduct of reaction outlet 7, thermometric instrument 12, manometer 13, and its basic structure is identical with embodiment 1.It also includes a mixed liquor EGR and a mixed liquor sprayer unit, the mixed liquor EGR is made up of peristaltic pump 8, mixed liquor circulation carrier pipe 9, peristaltic pump 8 is equipped with in the lower end of mixed liquor circulation carrier pipe 9, peristaltic pump 8 links to each other with the mixture export pipe 6 of reactor 2 lower ends, and the upper end of mixed liquor circulation carrier pipe 9 is positioned at the middle and upper part of reactor 2 and communicates with reactor 2.
As shown in Figure 5, described mixed liquor sprayer unit is made of parallel vertical injection spray pipe 14, the vapour cover 15 of five rows, described vertical injection spray pipe 14 upper ends link to each other with mixed liquor circulation carrier pipe 9, the lower end links to each other with vapour cover 15, leave the gap between vapour cover 15 and reactor 2 inwalls, have the hole corresponding with vertical injection spray pipe 14 on the vapour cover 15.Described vertical injection spray pipe 14 is the interlayer pipe of hollow, is full of mixed liquor in the interlayer, links to each other with mixed liquor circulation carrier pipe 9, and intermediate hollow partly is full of methanol steam, and spray nozzle 20 is housed on the hollow wall.Vapour cover 15 is mainly used to collect methanol steam, makes methanol steam can enter vertical injection spray pipe 14 inwalls more, makes methanol steam and more abundant contact of mixed liquor that spray nozzle 20 sprays, and fully carries out the vapour-liquid two phase reaction.Adopt vertical injection spray pipe 14 and vapour cover 15 structures of this many row's parallel upright, the contact area of methanol steam and mixed liquor is bigger, and time of contact is longer, and the conversion ratio of its biodiesel is also higher, can reach about 96%.
Embodiment 3
As shown in Figure 6, a kind of device that improves the biodiesel conversion ratio, it comprises entry to mixed solution pipe 1, reactor 2, heater 3, product sample tap pipe 4, products export pipe 5, mixture export pipe 6, liquid catalyst and byproduct of reaction outlet 7, thermometric instrument 12, manometer 13, and its basic structure is identical with embodiment 1.It also includes a mixed liquor EGR and a mixed liquor sprayer unit, the mixed liquor EGR is made up of peristaltic pump 8, mixed liquor circulation carrier pipe 9, peristaltic pump 8 is equipped with in the lower end of mixed liquor circulation carrier pipe 9, peristaltic pump 8 links to each other with the mixture export pipe 6 of reactor 2 lower ends, and the upper end of mixed liquor circulation carrier pipe 9 is positioned at the middle and upper part of reactor 2 and communicates with reactor 2.
As shown in Figure 7, described mixed liquor sprayer unit is made up of check valve 16, force (forcing) pump 17, four layers of spraying sheet 18, check valve 16 and force (forcing) pump 17 are installed in mixed liquor circulation carrier pipe 9 upper ends, force (forcing) pump 17 is used for improving the pressure in the spraying sheet 18, make the mist of spray holes 11 ejections in the spraying sheet 18 thinner, make the better effects if of vapour-liquid reaction.Check valve 16 main effects are: when preventing that end pressure is excessive on the mixed liquor circulation carrier pipe 9, flowing backwards appears in mixed liquor.
The interlayer thin slice that spraying sheet 18 constitutes for upper and lower surface, the centre is full of mixed liquor, spraying sheet 18 all links to each other with mixed liquor circulation carrier pipe 9, the spraying sheet 18 of the superiors one side down is provided with uniform spray holes 11, other three layers spraying sheet 18 equal two sides are provided with spray holes 11, multilayer spraying sheet 18 structures make the methyl alcohol contact area of vaporific mixed liquor and vapour shape bigger, have further improved the effect of vapour-liquid reaction.Spraying sheet 18 also is provided with the big hole 19 of mutual dislocation, so that methanol steam can rise to each spraying sheet 18 conversion zone, big hole 19 dislocation mutually is more tortuous for the path that makes the methanol steam reaction, and the reaction time is longer, reacts more abundant.Adopt this practical structure, the conversion ratio of its biodiesel significantly improves, and can reach about 98%.If in spray holes 11 special spray nozzle 20 is installed, can be further improved reaction efficiency.

Claims (4)

1. device that improves the biodiesel conversion ratio, it comprises entry to mixed solution pipe (1), reactor (2), heater (3), product sample tap pipe (4), products export pipe (5), mixture export pipe (6), liquid catalyst and byproduct of reaction outlet (7), thermometric instrument (12), manometer (13), reactor (2) upper end is provided with by entry to mixed solution pipe (1), thermometric instrument (12) and manometer (13), there are mixture export pipe (6) and byproduct of reaction outlet (7) in reactor (2) lower end, near the taper seat place products export pipe (5) is arranged at reactor (2) cylinder, be connected with product sample tap pipe (4) on the products export pipe (5), be provided with heater (3) around reactor (2) is outside, it is characterized in that: it also includes a mixed liquor EGR and a mixed liquor sprayer unit, described mixed liquor EGR is by peristaltic pump (8), mixed liquor circulation carrier pipe (9) is formed, peristaltic pump (8) is equipped with in the lower end of described mixed liquor circulation carrier pipe (9), described peristaltic pump (8) links to each other with the mixture export pipe (6) of reactor (2) lower end, and the upper end of described mixed liquor circulation carrier pipe (9) is positioned at the middle and upper part of reactor (2) and communicates with reactor (2).
2. a kind of device that improves the biodiesel conversion ratio according to claim 1, it is characterized in that: described mixed liquor sprayer unit is an annular injection spray pipe (10), described annular injection spray pipe (10) is installed in reactor (2) inside, and link to each other with mixed liquor circulation carrier pipe (9) upper end, described annular injection spray pipe (10) is provided with three row's high density spray holes (11), one row's high density spray holes (11) is wherein arranged bottom, and in addition two row's high density spray holes (11) are distributed in bottom spray holes (11) the right and left and with spray holes (11) is at 45 bottom.
3. a kind of device that improves the biodiesel conversion ratio according to claim 1, it is characterized in that: described mixed liquor sprayer unit comprises the vertical injection spray pipe (14) of the parallel upright that two rows are above, vapour cover (15), described vertical injection spray pipe (14) upper end links to each other with mixed liquor circulation carrier pipe (9), the lower end links to each other with vapour cover (15), leave the gap between described vapour cover (15) and reactor (2) inwall, have the hole corresponding with vertical injection spray pipe (14) on the described vapour cover (15), described vertical injection spray pipe (14) is the interlayer pipe of hollow, be full of mixed liquor in the interlayer, intermediate hollow partly is full of methanol steam, and spray nozzle (20) is housed on the hollow wall.
4. a kind of device that improves the biodiesel conversion ratio according to claim 1, it is characterized in that: described mixed liquor sprayer unit is by check valve (16), force (forcing) pump (17), spraying sheet (18) more than three layers is formed, described check valve (16) and force (forcing) pump (17) are installed in mixed liquor circulation carrier pipe (9) upper end, the interlayer thin slice that described spraying sheet (18) constitutes for upper and lower surface, the centre is full of mixed liquor, described spraying sheet (18) all links to each other with mixed liquor circulation carrier pipe (9), the spraying sheet (18) of the superiors one side down is provided with uniform spray holes (11), the following spraying sheet (18) of the superiors all is provided with spray holes (11) in the two sides, also is provided with the big hole (19) of mutual dislocation.
CN201310238016.1A 2013-06-17 2013-06-17 A kind of device improving biodiesel conversion rate Active CN103263885B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944534A (en) * 1970-08-08 1976-03-16 Mitsubishi Petrochemical Company Limited Gaseous-phase polymerization of olefins
CN1380135A (en) * 2002-02-07 2002-11-20 武汉化工学院 Coupling equipment of reaction and separation
CN201272776Y (en) * 2008-04-30 2009-07-15 昆明理工大学 Apparatus for continuous preparation of biodiesel by neutral grease
CN201704309U (en) * 2010-06-12 2011-01-12 陕西渭力生物能源有限公司 Esterification reaction device used for biodiesel preparation
CN201906536U (en) * 2010-12-23 2011-07-27 绍兴市新科节能建材有限公司 Smoke-dust treatment device
CN203291869U (en) * 2013-06-17 2013-11-20 长沙理工大学 Device for increasing biodiesel conversion ratio

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944534A (en) * 1970-08-08 1976-03-16 Mitsubishi Petrochemical Company Limited Gaseous-phase polymerization of olefins
CN1380135A (en) * 2002-02-07 2002-11-20 武汉化工学院 Coupling equipment of reaction and separation
CN201272776Y (en) * 2008-04-30 2009-07-15 昆明理工大学 Apparatus for continuous preparation of biodiesel by neutral grease
CN201704309U (en) * 2010-06-12 2011-01-12 陕西渭力生物能源有限公司 Esterification reaction device used for biodiesel preparation
CN201906536U (en) * 2010-12-23 2011-07-27 绍兴市新科节能建材有限公司 Smoke-dust treatment device
CN203291869U (en) * 2013-06-17 2013-11-20 长沙理工大学 Device for increasing biodiesel conversion ratio

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