CN114307913A - Lignocellulose photocatalysis pretreatment device - Google Patents
Lignocellulose photocatalysis pretreatment device Download PDFInfo
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- CN114307913A CN114307913A CN202111647861.5A CN202111647861A CN114307913A CN 114307913 A CN114307913 A CN 114307913A CN 202111647861 A CN202111647861 A CN 202111647861A CN 114307913 A CN114307913 A CN 114307913A
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- 238000007146 photocatalysis Methods 0.000 title description 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 68
- 239000012528 membrane Substances 0.000 claims abstract description 52
- 238000009434 installation Methods 0.000 claims abstract description 17
- 238000005286 illumination Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 13
- 230000000007 visual effect Effects 0.000 claims description 12
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- 238000000034 method Methods 0.000 abstract description 2
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- 238000003760 magnetic stirring Methods 0.000 description 4
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The invention relates to the technical field of lignocellulose treatment, and discloses a lignocellulose photocatalytic pretreatment device, which comprises a dark box body (1), a reaction vessel (7) and an illumination assembly, wherein the reaction vessel (7) is positioned in the dark box body (1), and the illumination assembly is arranged in the dark box body (1) and above the reaction vessel (7); the reaction vessel is characterized in that at least two areas are separated into by installing at least one pair of membrane frames (10) in the reaction vessel (7), each pair of membrane frames (10) are arranged in parallel, an installation cavity (13) is formed between the two membrane frames, a semi-permeable membrane (11) is placed in the installation cavity (13), and a window (20) allowing liquid to pass through is formed in the side wall of each membrane frame (10). The method can isolate the special materials such as the catalyst and the like which need to be recycled from other materials during the pretreatment of the lignocellulose, and is convenient for recycling the special materials after reaction.
Description
Technical Field
The invention relates to the technical field of lignocellulose treatment, in particular to a lignocellulose photocatalytic pretreatment device.
Background
The lignocellulose is an organic flocculent fiber substance obtained by chemical treatment and mechanical processing of natural renewable wood, is nontoxic, tasteless, pollution-free and radioactivity-free, and has excellent flexibility and dispersibility. The lignocellulose is insoluble in water, weak acid and alkaline solution, has neutral pH value, can improve the corrosion resistance of the rubber compound, has small specific gravity and large specific surface area, has excellent heat preservation, heat insulation, sound insulation, insulation and air permeability, has uniform thermal expansion without peeling and cracking, can insulate heat for several days when the working temperature of a product reaches 150 ℃, can insulate heat for tens of hours when the working temperature reaches 200 ℃, and can insulate heat for several hours when the working temperature exceeds 220 ℃. Lignocellulose can also be used as a thickener, absorbent, diluent or carrier and filler.
Lignocellulose is also an important component of biomass resources, and the difficulty of producing the biofuel by taking the lignocellulose as a raw material is in the pretreatment part, the condition for photocatalytic pretreatment of the lignocellulose is mild, and the lignocellulose is pollution-free and recyclable. Lignocellulose carries out the course of working, need carry out the photocatalysis to it and handles, and current photocatalysis processing apparatus sets up unreasonablely, and the fixed design of reaction household utensils, and inside can not separate to react for a plurality of reaction intervals, and it is comparatively inconvenient to add special reactant.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides a lignocellulose photocatalytic pretreatment device, which can isolate special materials such as a catalyst and the like which need to be recycled from other materials during lignocellulose pretreatment, and is convenient for recycling the special materials after reaction.
The technical scheme is as follows: in order to achieve the aim, the invention provides a lignocellulose photocatalytic pretreatment device which comprises a dark box body, a reaction vessel and an illumination component, wherein the reaction vessel is positioned in the dark box body, and the illumination component is arranged in the dark box body and above the reaction vessel; the reaction vessel is divided into at least two areas by installing at least one pair of membrane frames, each pair of membrane frames are arranged in parallel, an installation cavity is formed between the two membrane frames, a semi-permeable membrane is placed in the installation cavity, and a window allowing liquid to pass through is formed in the side wall of each membrane frame.
Further, the window sill at the bottom edge of the window is higher than the bottom surface of the reaction vessel. The design is mainly to avoid that solid materials in two adjacent areas are mixed into the adjacent areas after crossing the window at the bottom edge of the window, for example, materials such as catalyst which can be recycled, the window threshold at the bottom edge of the window is higher than the bottom surface of the reaction vessel, so that the solid materials in the adjacent areas cannot cross the window to enter other areas, and the subsequent material recycling is convenient.
Furthermore, a plurality of groups of diaphragm clamping plates are fixedly connected between the bottom edge window sills of the windows at two sides through elastic pieces respectively. After the semi-permeable diaphragm is arranged in the mounting cavity, the bottom edge is positioned between the multiple groups of diaphragm clamping plates on the two sides and is clamped by the multiple groups of diaphragm clamping plates, so that the diaphragm can be effectively prevented from swinging and shaking in the mounting cavity.
Furthermore, sealing strips are installed on the frames of the windows, and after the semi-permeable membranes are placed in the installation cavity, the sealing strips on the frames of the windows on two sides are in sealing contact with two surfaces of the semi-permeable membranes respectively. The setting of sealing strip is in order to guarantee to pass its rigidity when semi-permeable baffle is arranged in the installation cavity on the one hand, and on the other hand, the setting of sealing strip can also prevent that the solid material in the adjacent region from passing through the clearance between window and the semi-permeable diaphragm and entering into adjacent region, also can prevent that solid material from entering into between two baffle framves, leads to inconvenient clearance.
Furthermore, both sides of the top surface of the mounting cavity of the diaphragm frame are provided with sliding chutes, and sliding positioning blocks are mounted on the sliding chutes. The sliding positioning block can move randomly along the sliding chute, after the semi-permeable membrane is arranged in the mounting cavity of the membrane frame, the sliding positioning block is moved along the sliding chute to the top of the semi-permeable membrane so as to press the semi-permeable membrane in the mounting cavity of the membrane frame and prevent the semi-permeable membrane from moving randomly; in addition, the sliding positioning block can also tightly press the bottom of the semi-permeable diaphragm and the bottom surface of the reaction vessel, so that solid materials in two adjacent side areas are prevented from flowing and mixing together, and the subsequent separation and recovery of the solid materials are simple and convenient.
Furthermore, the outer walls of two sides of the reaction vessel are provided with guide sliding seats, and two sides of the inner wall of the dark box body are provided with guide grooves matched with the guide sliding seats for use. The setting up of direction slide and guide slot makes the reaction household utensils can follow the guide slot and slide and push into or pull out the camera bellows body for the reaction household utensils can be dismantled, makes things convenient for placing of reaction household utensils, and with taking out of reaction household utensils among the prior art need take out a lot of parts in the camera bellows body simultaneously and compare, and the operation is more convenient.
Furthermore, a box door is hinged on one side of the hidden box body perpendicular to the guide groove. After the box door is opened, the reaction vessel can be pushed into or pulled out of the dark box body along the guide groove.
Furthermore, the illumination assembly comprises a lamp panel, an illumination lamp, a traction screw rod and at least one guide rod, the bottom end of the traction screw rod is connected with the top surface of the lamp panel through a traction seat, the top end of the traction screw rod is in threaded connection with the top surface of the concealed box body and fixedly connected with a knob after penetrating through the top surface, the bottom end of the guide rod is fixedly connected with the top surface of the lamp panel, and the top end of the guide rod penetrates through a through hole in the top surface of the concealed box body; the illumination lamp is installed on the bottom surface of the lamp panel. Because the distance between the irradiation lamp and the reactant can affect the effect of photocatalytic pretreatment in the photocatalytic pretreatment process of the lignocellulose, in the application, the irradiation lamp is designed to be capable of adjusting the height, the traction screw rod is driven to rotate by the rotary knob, the traction screw rod drives the traction seat to drive the lamp plate to move up and down under the guiding action of the guide rod, and then the irradiation lamp on the bottom surface of the lamp plate moves up and down along with the traction seat, so that the distance between the irradiation lamp and the material can be adjusted; the irradiation lamp is preferably an ultraviolet irradiation lamp, more preferably an ultraviolet full-wavelength lamp, and the power is adjustable.
Further, a magnetic base is arranged in the dark box body and below the reaction vessel, and a magnetic stirrer, an ultrasonic generator and/or a heating ring are/is arranged on the magnetic base. The magnetic base is right at the lower part of the reaction vessel, the magnetic stirring operation is carried out on the reaction vessel by the magnetic stirrer arranged in the magnetic base, the rotating speed of the magnetic stirring can be adjusted, the ultrasonic treatment can be carried out on the reaction vessel by the ultrasonic generator, and the power of the ultrasonic wave can be adjusted; in addition, materials in the reaction vessel can be heated and reacted through the heating ring, and the heating temperature can be adjusted.
Further, a graduated scale is arranged on the guide rod. The arrangement of the graduated scale on the guide rod enables the distance between the irradiation lamp and the material to be measured visually, and the test operation is convenient.
Preferably, a plurality of sets of the partition assemblies are arranged at equal intervals in the reaction vessel.
Furthermore, a visual window is arranged on the side surface of the hidden box body; and a sun-shading cloth is arranged on the outer side of the visual window. The setting of visual window is convenient for the experimenter to observe the internal reaction condition of camera bellows through the visual window at any time, and the puggaree can shelter from the visual window, prevents that external light from getting into the internal reaction effect that influences of camera bellows through the visual window.
Has the advantages that: the lignocellulose photocatalytic pretreatment device is characterized in that paired membrane frames are arranged in a reaction vessel, a semi-permeable membrane is arranged in an installation cavity of each membrane frame to divide the reaction vessel into reaction vessels with different regions, the semi-permeable membrane is arranged to enable liquid in reactants in different regions to flow through each other, solid materials such as special materials such as catalysts needing to be recycled can be independently arranged in one region, and the solid materials needing to be recycled can be conveniently recycled at one time after the reaction is finished.
Drawings
FIG. 1 is a schematic view of the external structure of a photocatalytic pretreatment device for lignocellulose;
FIG. 2 is a schematic view of the internal structure of a photocatalytic pretreatment device for lignocellulose;
FIG. 3 is a schematic diagram of the structure of a reaction vessel in the photocatalytic pretreatment apparatus for lignocellulose;
FIG. 4 is an enlarged schematic view of the inside of the dotted circle S in FIG. 3;
FIG. 5 is a schematic view of the structure of an illumination assembly in a photocatalytic pretreatment device for lignocellulose;
in the figure: 1. a hidden box body; 2. a box cover; 3. a guide bar; 4. a knob; 5. a visual window; 6. a magnetic base; 7. a reaction vessel; 8. a guide groove; 9. a guide slide; 10. a membrane frame; 11. a semi-permeable diaphragm; 12. a limiting plate; 13. a mounting cavity; 14. a sun-shading cloth; 15. a diaphragm clamp plate; 16. a lamp panel; 17. illuminating a lamp; 18. a traction seat; 19. a lead screw is pulled; 20. a window; 21. a bottom edge window sill; 22. an elastic member; 23. a chute; 24. a graduated scale; 25. a sealing strip.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Embodiment 1:
referring to fig. 1-5, the present embodiment provides a photocatalytic pretreatment device for lignocellulose: the device comprises a dark box body 1, a reaction vessel 7 and an illumination assembly, wherein a visual window 5 is arranged on one side of the dark box body 1; the outside of the visual window 5 is provided with a sunshade cloth 14. The other side of the hidden box body 1 is hinged with a box door 2. The reaction vessel 7 is positioned in the hidden box body 1, the reaction vessel 7 is divided into three areas by installing two pairs of membrane frames 10, the two membrane frames 10 in each pair of membrane frames 10 are arranged in parallel, an installation cavity 13 is formed between the two membrane frames, and the side wall of each membrane frame 10 is provided with a window 20 allowing liquid to pass through. The window 20 has a window sill 21 at the bottom higher than the bottom of the reaction vessel 7, and a semi-permeable diaphragm 11 is placed in the installation cavity 13. The outer walls of two sides of the reaction vessel 7 are provided with guide sliding seats 9, and two sides of the inner wall of the dark box body 1 are provided with guide grooves 8 matched with the guide sliding seats 9. When the door 2 is closed, the guide groove 8 is perpendicular to the door 2.
The illumination component is arranged in the dark box body 1 and above the reaction vessel 7; the illumination assembly comprises a lamp panel 16, an illuminating lamp 17, a traction screw rod 19 and at least one guide rod 3, the bottom end of the traction screw rod 19 is connected with the top surface of the lamp panel 16 through a traction seat 18, the top end of the traction screw rod 19 is in threaded connection with the top surface of the obscura body 1 and fixedly connected with a knob 4 after penetrating through the top surface, the bottom end of the guide rod 3 is fixedly connected with the top surface of the lamp panel 16, and the top end of the guide rod passes through a through hole in the top surface of the obscura body 1; the illuminating lamp 17 is arranged on the bottom surface of the lamp panel 16; the irradiation lamp 17 is preferably an ultraviolet irradiation lamp, more preferably an ultraviolet full-wavelength lamp, and has adjustable power. A magnetic base 6 is also arranged in the dark box body and below the reaction vessel 7, and a magnetic stirrer, an ultrasonic generator and/or a heating ring are arranged on the magnetic base 6.
When the lignocellulose photocatalytic pretreatment device is used, the box door 1 can be opened firstly, the reaction vessel 7 is pulled out of the dark box body 1 through the matching of the guide slide seat 9 and the guide groove 8, then a liquid material is placed in one of the areas of the reaction vessel 7, a solid catalyst is placed in the adjacent area, and then the reaction vessel 7 is pushed into the dark box body 1 through the matching of the guide slide seat 9 and the guide groove 8. The rotary knob 4 drives the traction screw rod 19 to rotate, the traction screw rod 19 drives the traction seat 18 to drive the lamp plate 16 to move up and down under the guiding action of the guide rod 3, the irradiation lamp 17 on the bottom surface of the lamp plate 16 moves up and down along with the lamp plate, the distance between the adjusting material and the irradiation lamp 17 is judged by observing the scale 24 on the guide rod 3, after the distance is adjusted, the magnetic stirring operation is carried out on the reaction vessel 7 through a magnetic stirrer arranged in the magnetic base 6, the rotating speed of the magnetic stirring can be adjusted, the ultrasonic treatment can be carried out on the reaction vessel 7 through the ultrasonic generator, and the power of ultrasonic waves can be adjusted; in addition, materials in the reaction vessel 7 can be heated and reacted through the heating ring, and the heating temperature can be adjusted. Liquid materials can enter the area of the solid catalyst through the window 20 and the semi-permeable diaphragm 11, and when reaction is carried out, the liquid materials react with each other under the action of the solid catalyst. When the reaction is carried out, the reaction condition in the dark box body 1 can be observed through the visual window 5 at any time. After the reaction is finished, the box door 2 is opened, the reaction vessel 7 is pulled out of the hidden box body 1 through the matching of the guide slide seat 9 and the guide groove 8, and then the solid catalyst is recovered.
Embodiment 2:
the embodiment is a further improvement of the embodiment 1, and the main improvement is that in the embodiment 1, the semi-permeable membrane 11 is placed in the installation cavity 13 between the membrane frames 10 at two sides, because the semi-permeable membrane 11 is only placed in the installation cavity 13, the position is not fixed, the situation that the position of the semi-permeable membrane 11 swings and shakes easily occurs in the reaction process, and because a gap is also formed between the semi-permeable membrane 11 and the membrane frames 10 at two sides, in the reaction process, a solid material can enter the gap between the two membrane frames 10 through the window 20, even a small amount of solid material enters the adjacent area of the reaction vessel 7 through the gap between the semi-permeable membrane 11 and the membrane frame 10, and the recovery after the reaction and the cleaning of the reaction vessel 7 are affected. However, the present embodiment can effectively avoid the above-mentioned situation, specifically:
in the photocatalytic pretreatment device for lignocellulose according to the present embodiment, as shown in fig. 3 and 4, a plurality of sets of membrane holders 15 are fixedly connected between the bottom sill 21 of the windows 20 of the membrane holders 10 on both sides by elastic members 22, respectively. The frame of the window 20 is provided with a sealing strip 25. The top surface of each pair of membrane frames 10 is provided with a sliding chute 23, and a sliding positioning block 12 is arranged on the sliding chute 23.
After the semi-permeable diaphragm 11 is placed in the installation cavity 13, the bottom of the semi-permeable diaphragm 11 is clamped between the plurality of sets of diaphragm clamping plates 15 on the two sides, so that the bottom of the semi-permeable diaphragm 11 cannot move, and after the semi-permeable diaphragm is placed, the sliding positioning block 12 is moved along the sliding groove 23 to the top of the semi-permeable diaphragm 11, so that the semi-permeable diaphragm 11 is tightly pressed in the installation cavity 13 of the diaphragm frame 10 and cannot move randomly; in addition, the sliding positioning block 12 can also tightly press the bottom of the semi-permeable diaphragm 11 and the bottom surface of the reaction vessel 7, so that solid materials in two adjacent side areas are prevented from flowing and mixing together, and the subsequent separation and recovery of the solid materials are ensured to be simple and convenient. After the semi-permeable membrane is fixed, the sealing strips 25 on the frames of the windows 20 on the two sides can be in sealing contact with the two sides of the semi-permeable membrane 11 respectively, on one hand, the semi-permeable membrane 11 is guaranteed to be fixed in position when placed in the installation cavity 13 due to the arrangement of the sealing strips 25, on the other hand, solid materials in adjacent areas can be prevented from passing through gaps between the windows 20 and the semi-permeable membrane 11 and entering adjacent areas, and the solid materials can be prevented from entering between the two partition plate frames 10.
Otherwise, this embodiment is identical to embodiment 1, and will not be described herein.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The lignocellulose photocatalytic pretreatment device comprises a dark box body (1), a reaction vessel (7) and an illumination assembly, wherein the reaction vessel (7) is positioned in the dark box body (1), and the illumination assembly is arranged in the dark box body (1) and above the reaction vessel (7); the reaction vessel is characterized in that at least two areas are separated into by installing at least one pair of membrane frames (10) in the reaction vessel (7), each pair of membrane frames (10) are arranged in parallel, an installation cavity (13) is formed between the two membrane frames, a semi-permeable membrane (11) is placed in the installation cavity (13), and a window (20) allowing liquid to pass through is formed in the side wall of each membrane frame (10).
2. The photocatalytic pretreatment device for lignocellulose according to claim 1, characterized in that: the bottom edge window sill (21) of the window (20) is higher than the bottom surface of the reaction vessel (7).
3. The photocatalytic pretreatment device for lignocellulose as recited in claim 2, characterized in that: a plurality of groups of diaphragm clamping plates (15) are fixedly connected between the bottom edge window sills (21) of the windows (20) at two sides through elastic pieces (22).
4. The photocatalytic pretreatment device for lignocellulose according to claim 1, characterized in that: install sealing strip (25) on the frame of window (20) semi-permeable membrane (11) place in back in installation cavity (13), on both sides window (20) frame sealing strip (25) with the two sides of semi-permeable membrane (11) are sealing contact respectively.
5. The photocatalytic pretreatment device for lignocellulose according to claim 1, characterized in that: the top surface of each pair of the membrane frames (10) is provided with a sliding chute (23), and a sliding positioning block (12) is arranged on the sliding chute (23).
6. The photocatalytic pretreatment device for lignocellulose according to claim 1, characterized in that: the outer walls of the two sides of the reaction vessel (7) are provided with guide sliding seats (9), and the two sides of the inner wall of the hidden box body (1) are provided with guide grooves (8) matched with the guide sliding seats (9) for use.
7. The photocatalytic pretreatment device for lignocellulose as recited in claim 6, characterized in that: one side of the hidden box body (1) vertical to the guide groove (8) is hinged with a box door (2).
8. The photocatalytic pretreatment device for lignocellulose according to claim 1, characterized in that: the illumination assembly comprises a lamp panel (16), an illuminating lamp (17), a traction screw rod (19) and at least one guide rod (3), the bottom end of the traction screw rod (19) is connected with the top surface of the lamp panel (17) through a traction seat (18), the top end of the traction screw rod is in threaded connection with the top surface of the concealed box body (1) and fixedly connected with a knob (4) after penetrating through the top surface, the bottom end of the guide rod (3) is fixedly connected with the top surface of the lamp panel (16), and the top end of the guide rod penetrates through a through hole in the top surface of the concealed box body (1); the irradiation lamp (17) is arranged on the bottom surface of the lamp panel (16);
preferably, the irradiation lamp (17) is an ultraviolet irradiation lamp.
9. The photocatalytic pretreatment device for lignocellulose as recited in claim 8, characterized in that: the guide rod (3) is provided with a graduated scale (24).
10. The photocatalytic pretreatment device for lignocellulose according to any one of claims 1 to 9, characterized in that: a magnetic base (6) is also arranged in the hidden box body (1) and below the reaction vessel (7), and a magnetic stirrer, an ultrasonic generator and/or a heating ring are arranged on the magnetic base (6);
and/or a visual window (5) is arranged on the side surface of the hidden box body (1); the outer side of the visual window (5) is provided with a sunshade cloth (14).
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| CN202111647861.5A CN114307913B (en) | 2021-12-31 | 2021-12-31 | Lignocellulose photocatalysis pretreatment device |
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| CN202111647861.5A CN114307913B (en) | 2021-12-31 | 2021-12-31 | Lignocellulose photocatalysis pretreatment device |
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| CN204522960U (en) * | 2015-03-10 | 2015-08-05 | 金陵科技学院 | A kind of multi-functional ultraviolet irradiation case |
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| CN205761109U (en) * | 2016-07-08 | 2016-12-07 | 中国矿业大学 | Photocatalysis easy device for Nano semiconductor catalyst |
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| CN206799205U (en) * | 2017-06-13 | 2017-12-26 | 福建师范大学 | A kind of organic matter light degradation and the device of carbon dioxide photoreduction coupling |
| CN108251467A (en) * | 2018-01-23 | 2018-07-06 | 广东工业大学 | A kind of method that photochemical catalytic oxidation improves natural wooden fiber's element enzymolysis efficiency |
| CN208127320U (en) * | 2018-05-04 | 2018-11-20 | 广州市泓能五金有限公司 | The novel vanadium cell battery pile being easily installed |
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| CN211528261U (en) * | 2019-09-18 | 2020-09-18 | 江苏厚生新能源科技有限公司 | Suspension device for diaphragm in thermal shrinkage test |
| CN211194078U (en) * | 2019-12-13 | 2020-08-07 | 深圳市佳仁美塑科技有限公司 | Fixing device for conductive film production |
| CN214051597U (en) * | 2020-07-21 | 2021-08-27 | 王官 | Environmental engineering photocatalysis experiment reaction box |
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Application publication date: 20220412 Assignee: Zibo Hefeng Seed Technology Co.,Ltd. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2023990000959 Denomination of invention: Photocatalytic pretreatment device for lignocellulose Granted publication date: 20230630 License type: Common License Record date: 20231205 |
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