CN115726211A - Integrated cellulose extraction system based on thermoelectric coupling - Google Patents

Integrated cellulose extraction system based on thermoelectric coupling Download PDF

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CN115726211A
CN115726211A CN202211458982.XA CN202211458982A CN115726211A CN 115726211 A CN115726211 A CN 115726211A CN 202211458982 A CN202211458982 A CN 202211458982A CN 115726211 A CN115726211 A CN 115726211A
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thermal reaction
heat
reaction vessel
silica gel
glass fiber
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CN115726211B (en
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陈海飞
刘艳艳
杨洁
彭明国
周诗岽
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Changzhou University
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Changzhou University
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Abstract

The invention relates to an integrated cellulose extraction system based on thermoelectric coupling, and belongs to the technical field of cellulose extraction and solar energy application. The primary drying system consisting of an automatic vacuum drying chamber realizes primary crushing and drying of the grape straws, wherein a CPC type condenser is arranged at the top of the automatic vacuum drying chamber; the heat sieve chamber utilizes the heat in the phase-change heat storage box to realize secondary drying and crushing on the raw materials; two thermal reaction vessels are arranged in the water bath kettle to provide a thermal reaction environment (100-120 ℃) for chemical extraction, and the water bath kettle can simultaneously realize the integrated process of thermal reaction, filtration and drying. The invention extracts cellulose from grape straws, realizes thermoelectric coupling by combining with a CPC type condenser, does not need additional energy supply, solves the problem that a large amount of heat sources are consumed in the traditional cellulose preparation process, realizes accurate temperature control, and simultaneously realizes energy conservation, environmental protection and green sustainability.

Description

Integrated cellulose extraction system based on thermoelectric coupling
Technical Field
The invention relates to the field of extraction of cellulose in grape straws, in particular to a thermoelectrically coupled integrated cellulose extraction system.
Background
In Xinjiang areas of China, due to the special geographical position environment, grapes are abundant in yield, a large amount of grape straws are generated successively, traditional grape farmers use a drying and burning mode to treat the straws or use the straws as firewood materials, and accordingly a large amount of harmful gas is generated by burning to pollute the environment; in addition, a few grape farmhouses bury the grape straws on the spot, the method has the minimum pollution to the environment, but the soil formation process is extremely slow, the later planting process is influenced, and the method is rarely used.
Grape stalks contain a large amount of useful chemical components such as cellulose, hemicellulose, lignin, etc. Cellulose is a natural organic matter, and the cellulose extracted from plants can be applied to the fields of food, wastewater treatment and the like, and has wide application, so that people gradually frequently research and develop the cellulose. The traditional cellulose extraction method needs to consume a large amount of heat sources to maintain a thermal reaction environment, and meanwhile, the processes of drying, crushing, acid-base reaction and the like are needed, so that the method is complex, poor in environmental friendliness and non-sustainable.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a system for extracting cellulose from grape straws by using solar energy, which is energy-saving, environment-friendly, green and sustainable and is based on the grape straws and the cellulose extracted by using solar photo-thermal photoelectric coupling.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an integrated cellulose extraction system based on thermoelectric coupling comprises an automatic vacuum drying system, a solar thermoelectric coupling system, a heat screening system and an integrated thermal reaction system;
the automatic vacuum drying system comprises a primary crushing machine 25, a secondary crushing machine 3, an automatic vacuum drying chamber 21, a timing vacuum pump 22, a glass fiber heat-conducting silica gel conveyor belt 23 and absorbent cotton 27; the automatic vacuum drying chamber 21 provides a closed vacuum environment for the drying reaction; the timing vacuum pump 22 is connected with the automatic vacuum drying chamber 21 and starts working at intervals; the top of the automatic vacuum drying chamber 21 is provided with moisture absorption cotton 27, the glass fiber heat conduction silica gel conveyor belt 23 is installed progressively, and the straw which is crushed primarily is driven to complete primary drying work while the conveyor belt slides slowly; the primary crushing machine 25 is embedded and installed at the top of the automatic vacuum drying chamber 21 and used for primary crushing work, a groove type feeding port 24 is formed in the top of the primary crushing machine 25, a discharging port 26 in the bottom of the primary crushing machine 25 is arranged at the upper edge of the uppermost layer of the glass fiber heat-conducting silica gel conveyor belt 23, and the tail end of the lowermost layer of the glass fiber heat-conducting silica gel conveyor belt 23 is located above the discharging port of the automatic vacuum drying chamber 21; the secondary crushing machine 3 is placed at a discharge port of the automatic vacuum drying chamber 21, receives the raw materials which are subjected to primary crushing and drying in the automatic vacuum drying chamber 21, and finishes the final crushing work; the glass fiber heat-conducting silica gel conveyor belt 23 is installed in a progressive mode, namely, the glass fiber heat-conducting silica gel conveyor belt 23 is installed from top to bottom in a staggered mode, the tail end of each layer of the glass fiber heat-conducting silica gel conveyor belt 23 is shorter than the top end of the next layer of the glass fiber heat-conducting silica gel conveyor belt 23, and the bottom of each glass fiber heat-conducting silica gel conveyor belt 23 is provided with a hot water pipe.
The solar thermoelectric coupling system comprises a CPC-type condenser 11 mounted on top of an automated vacuum drying chamber 21;
the hot screening system comprises a hot screening chamber 41, a blower 42, 30-mesh sieves 441 and 60-mesh sieves 442, a rotatable discharging port 43 and a hot screening chamber feeding port 45; a feeding hole 45 of the hot sieving chamber is connected with a discharging hole of the secondary crushing machine 3; the blower 42 is arranged at the upper right corner of the hot screen chamber 41, the 30-mesh screen 441 and the 60-mesh screen 442 are arranged at the lower left corner of the hot screen chamber 41 in sequence from top to bottom, the rotatable discharge port 43 is arranged at the lower side corner of the 60-mesh screen, an oblique diagonal line is formed by the rotatable discharge port and the blower 42, and the discharge direction can be adjusted according to requirements; the upper and lower arrangement of the 30-mesh sieve 441 and the 60-mesh sieve 442 on one hand completes the fine screening work, and on the other hand prolongs the retention time of the straw powder in the hot screening chamber 41, so as to realize thorough drying;
the integrated thermal reaction system comprises a No. 1 thermal reaction vessel 51 and a No. 2 thermal reaction vessel 61 which are erected in the water bath 521 by means of an arc-shaped bracket 56; the No. 1 thermal reaction vessel 51 and the No. 2 thermal reaction vessel 61 are internally provided with a filtering device; the filtering device comprises a supporting rod 583, a plastic carbon fiber filter cloth 50, a magnetic adsorption ring 584, a flexible nanofiber membrane 585, an annular inner partition 586, a spring 582 and a spring expansion valve 581; the outer side of the water bath 521 of the No. 1 thermal reaction vessel 51 is coated with an aluminum silicate coating 522, and an auxiliary electric heating wire 53 is arranged in an auxiliary electric heating cavity and positioned at the bottom of the water bath 521; the bidirectional waste liquid pipe 55 passes through the outer wall of the water bath 521 and is erected on the water bath, and two ends of the bidirectional waste liquid pipe are respectively communicated with two waste liquid tanks 54, wherein the waste liquid pipe in the No. 2 thermal reaction vessel only passes through the outer wall of the water bath 521, and the waste liquid pipe in the No. 1 thermal reaction vessel sequentially passes through the outer wall of the water bath 521 and the aluminum silicate coating 522; the plastic carbon fiber filter cloth 50 is attached to the bottoms of the No. 1 thermal reaction vessel 51 and the No. 2 thermal reaction vessel 61, wherein the joint position of the reaction vessel and the bidirectional waste liquid pipe 55 is communicated, and the communicated channel is covered by the plastic carbon fiber filter cloth 50, so that the filtrate in the filtering channel smoothly flows into the bidirectional waste liquid pipe 55 through the plastic carbon fiber filter cloth 50; an adherence cold water pipe 62 is arranged on the outer wall of the No. 2 thermal reaction vessel 61 in a surrounding way, and the adherence cold water pipe 62 is communicated with the water storage tank 14 through a pipeline; the magnetic force adsorption ring 584 in the filtering device is composed of two half-ring structures, one end of each of the two half-rings is rotatably connected, the other end of each of the two half-rings can be opened with a certain opening, and when the opening is closed, the inner peripheries of the two half-ring structures are both tightly adsorbed on the outer wall of the supporting rod 583; a circle of flexible nanofiber membrane 585 is arranged at the bottom of the outer ring periphery of the two semi-ring structures in a surrounding mode, the lower hem of the flexible nanofiber membrane 585 is fixedly arranged at the inner ring periphery of the annular inner partition plate 586, the outer ring periphery of the annular inner partition plate 586 is fixed on the inner walls of the No. 1 thermal reaction vessel 51 and the No. 2 thermal reaction vessel 61 and is positioned above the plastic carbon fiber filter cloth 50, and a closed thermal reaction space formed by the inner wall of the thermal reaction vessel, the annular inner partition plate 586, the flexible nanofiber membrane 585 and the magnetic adsorption ring 584 is formed; the inner end of the spring expansion valve 581 is connected with one end of a spring 582, and the other end of the spring 582 is connected with the interface end on one side of one of the magnetic adsorption rings 584; when the thermal reaction is carried out, the spring 582 is tightened by screwing the spring expansion valve 581 inwards, so that the magnetic adsorption ring 584 is closed under the pulling force of attraction and adsorbed on the support rod 583, and a closed thermal reaction space is formed among the annular inner partition plate 586, the flexible nanofiber membrane 585, the magnetic adsorption ring 584 and the inner wall of the reaction vessel; when the filtration operation is performed, the spring 582 is extended by unscrewing the spring expansion valve 581 outwards, so that one half of the magnetic adsorption ring 584 is forced to be separated from the other half by external force, a filtration seam is formed between the magnetic adsorption ring 584 and the support rod 583, the other half of the magnetic adsorption ring 584 is still adsorbed on the support rod 583, at the moment, the opened end of the magnetic adsorption ring 584 depends on the outer tube of the interface end spring 582 and the other end still adsorbed on the support rod 583 to be suspended on a plane, the flexible nanofiber membrane 585 is stretched by virtue of the flexible action of the flexible nanofiber membrane 585, but still surrounds the outer circumference of the magnetic adsorption ring 584, and is not separated, so that a fiber membrane filtrate channel is formed between the magnetic adsorption ring 584 and the annular inner partition 586, and the filtration is realized. The bottom of the support bar 583 penetrates through the bottom of the reaction vessel, the plastic carbon fiber filter cloth 50, the annular inner partition plate 586 and the magnetic force adsorption ring 584 in sequence, and is fixed on the bidirectional waste liquid pipe 55 by the fixing knob 57.
The water storage tank 14, the CPC condenser 11 and the phase change heat storage tank 15 are connected in sequence through the heat exchange water pipe 12; a water pump 13 and a one-way valve 17 are sequentially arranged between the water storage tank 14 and the CPC condenser 11, and a liquid separation valve 16 is arranged between the CPC condenser 11 and the phase-change heat storage tank 15; the liquid separating valve 16 is used for enabling high-temperature water absorbed by the photovoltaic cell to flow into a hot water pipe on the inner wall of the uppermost glass fiber heat-conducting silica gel conveyor belt 23, the tail end of the hot water pipe in the upper glass fiber heat-conducting silica gel conveyor belt 23 is connected with the starting end of the hot water pipe in the lower glass fiber heat-conducting silica gel conveyor belt 23, and the outlet of the hot water pipe of the last glass fiber heat-conducting silica gel conveyor belt 23 is connected with the cold water inlet of the photovoltaic cell through the heat exchange water pipe 12 and the water pump and the check valve 17; the heat sieve chamber 41 is directly connected with the phase change heat storage tank 15 by using a heat exchange water pipe 12 to form a water heat exchange circulation loop; the water bath kettle injects hot water from the phase change heat storage tank 15 through the heat exchange water pipe 12 to form a water heat exchange circulation loop; a stop valve 18 is installed on the heat exchange water pipe 12, an adherence cold water pipe 62 is arranged around the outer wall of the No. 2 thermal reaction vessel 61, the inlet of the cold water pipe 62 is connected with the water storage tank 14, the outlet of the cold water pipe 62 is communicated with the phase change heat storage tank 15, and the photovoltaic cell is communicated with the storage battery box 19 through a circuit; the auxiliary electric heating wire 53 is communicated with the electric storage box 19 through a circuit, and the drying chamber 7 is connected into the phase change heat storage box 15 through the heat exchange water pipe 12 to form a water heat exchange circulation loop.
Further, the glass fiber heat-conducting silica gel conveyor belt 23 has three layers, and a concave pipe 281, an inverted concave pipe 282 and a square-back pipe 283 are sequentially laid on the inner wall of the conveyor belt from top to bottom.
Furthermore, the glass fiber heat-conducting silica gel conveyor belt 23 is in an inverted 'ji' shape at the tail part blanking position.
Further, the inner diameter of the annular inner partition 586 is larger than the outer diameter of the support rod 583.
The invention has the beneficial effects that: the grape straws are used for extracting cellulose, a CPC type condenser high-power light-gathering power generation system is used for providing photoelectric photo-thermal energy, extra non-renewable energy sources are not required to be consumed, energy is saved, the environment is protected, and the production cost is reduced; the vacuum chamber drying and the hot screen chamber drying are combined, so that the drying process is complete and thorough, and no large labor is consumed; the thermal reaction process and the filtering process are switched by utilizing the expansion of the spring expansion valve, the thermal reaction and the filtering are realized in the water bath kettle, the temperature is controlled by utilizing the aluminum silicate coating and the auxiliary electric heating wire, the temperature is reduced by the wall-attached cooling water pipe, and the whole thermal circulation system is connected, so that the device is safe, efficient, green and sustainable.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a diagram of an automated vacuum drying system;
FIG. 3 is a diagram of a hot screen system;
FIG. 4 is a diagram of an integrated thermal reaction system in which a thermal reaction vessel No. 1 is arranged;
FIG. 5 is a diagram of an integrated thermal reaction system with a "No. 2" thermal reaction vessel;
FIG. 6 is a front view of the filter apparatus during thermal reaction;
FIG. 7 is a top view of a filter apparatus in which thermal reactions are occurring.
Fig. 8 is a front view of the filtering operation.
In the figure: 11-CPC concentrator; 12-heat exchange water pipes; 13-a water pump; 14-a water storage tank; 15-phase change heat storage tank; 16-a liquid separating valve; 17-a one-way valve; 18-a stop valve; 19-an accumulator case; 21-an automatic vacuum drying chamber; 22-a timing vacuum pump; 23-a glass fiber heat-conducting silica gel conveyor belt; 24-groove type material inlet; 25-first-stage crushing machine; 26-a discharge hole; 27-absorbent cotton; 281- "concave" tube; 282- "inverted concave" tube; 283- "clip-shaped" tube; 3-a secondary crushing machine; 41-a hot screen chamber; 42-a blower; 43-a rotatable discharge port; 441-30 mesh sieve; 442-60 mesh sieve; 45-hot screen chamber feed inlet; 50-plastic carbon fiber filter cloth; 51- "No. 1" hot reaction vessel; 521-water bath; 522-aluminum silicate coating; 53-auxiliary electric heating wire; 54-a waste liquor tank; 55-bidirectional waste pipe; 56-arc support; 57-fixing the knob; 581-spring expansion valve; 582-a spring; 583-a support bar; 584-a magnetic adsorption ring; 585 — flexible nanofiber membranes; 586-annular internal baffle; 61- "No. 2" hot reaction vessel; 62-adherence cooling water pipe; 7-drying chamber.
Detailed Description
The present invention will be further explained in detail with reference to the accompanying drawings. The following drawings are simplified schematic views and merely illustrate the basic structure of the present invention, and thus show only the components related to the present invention.
Example 1
As shown in figures 1-8, the invention provides a thermoelectrically-coupled-based integrated cellulose extraction system, which mainly comprises an automatic vacuum drying system, a solar thermoelectrically-coupled system, a heat screening system and an integrated thermal reaction system.
The solar thermoelectric coupling system comprises a CPC type condenser 11 arranged at the top of a vacuum drying chamber 21, cold water in a water storage tank 14 is pumped into a photovoltaic battery pack unit on the lower side of the CPC type condenser 11 through a water pump 13 and a heat exchange water pipe 12, the temperature of the cold water is raised after the heat on the surface of a photovoltaic battery is absorbed, the cold water is stored in a phase change heat storage tank 15 through the heat exchange water pipe 12, hot water in the midway heat exchange water pipe 12 is shunted through a shunt valve 16 and enters an automatic vacuum drying chamber 21, a concave pipe 281, an inverted concave pipe 282 and a return pipe 283 on the lower surface of a glass fiber heat-conducting silica gel conveyor belt 23 are used for circulating the hot water entering from the heat exchange water pipe 12, after the heat exchange is finished, medium-temperature water is discharged through a water outlet of the return pipe 283 and is connected into a cold water inlet end at the bottom of the photovoltaic battery pack of the CPC type condenser 11 through a one-way valve 17 to absorb heat again, and the photovoltaic battery is connected to a storage tank 19 through a circuit;
grape straws are put into the first-stage crushing machine 25 through the groove type feeding port 24 to finish a primary crushing task, the grape straws enter the automatic vacuum drying chamber 21 through the discharging port 26, the primarily crushed grape straws are slowly driven by the glass fiber heat-conducting silica gel conveyor belt 23 to be conveyed while being dried from top to bottom, the hygroscopic cotton 27 at the top of the drying chamber is used for absorbing moisture evaporated in the drying process of the grape straws, in addition, the timing vacuum pump 22 is operated in time to extract air in the automatic vacuum drying chamber 21, and a vacuum environment is created for the drying process;
the primarily dried grape straws are sent to a secondary crushing machine 3;
the completely crushed grape straws enter the heat sieve chamber 41 from a feed inlet 45 of the heat sieve chamber, the heat sieve chamber 41 is communicated with the phase-change heat storage tank 15 through a heat exchange water pipe, a heat source in the phase-change heat storage tank 15 provides heat for the heat sieving process, the air blower 42 is installed at the upper right corner of the heat sieve chamber and provides power for grape straw powder entering from the feed inlet of the heat sieve chamber, and a 30-mesh sieve 441 and a 60-mesh sieve 442 are sequentially arranged around the lower left corner of the heat sieve chamber from top to bottom, so that fine sieving is completed on one hand, the retention time of the grape straw powder in the heat sieve chamber 41 is prolonged on the other hand, thorough drying is realized, and the straw powder after the heat sieving is discharged from a rotatable discharge outlet 43;
an integrated thermal reaction system comprises a No. 1 thermal reaction vessel 51 and a No. 2 thermal reaction vessel 61 which are fixed in a water bath 521 through an arc-shaped support 56, a stop valve 18 is closed, hot water in a phase change heat storage tank 15 flows into the water bath 521 through a heat exchange water pipe 12 respectively, wherein the outer wall of the water bath 521 of the No. 1 thermal reaction vessel 51 is coated with an aluminum silicate coating 522 for heat preservation;
when the thermal reaction is carried out, a spring expansion valve 581 is screwed to compress a spring 582, a magnetic adsorption ring 584 is tightly adsorbed on a support rod 583 fixed on a bidirectional waste liquid pipe 55 by virtue of a fixed knob 57, the inner wall of a thermal reaction vessel, the magnetic adsorption ring 584, a flexible nanofiber membrane 585 and an annular inner partition 586 form a thermal reaction space, 4% of sodium hydroxide solution is added into a No. 1 thermal reaction vessel 51 to immerse grape straw powder, the reaction is carried out for a period of time within the temperature range of a thermal reaction environment of 100-120 ℃, the water bath temperature is constantly monitored and kept within an allowable range, and the temperature is regulated by virtue of an auxiliary electric heating wire 53; after a period of time, a filtering seam is formed between the spring expansion valve 581 and the magnetic adsorption ring 584 and the support rod 583, liquid flows through a filtrate channel formed by the flexible nanofiber membrane 585 from the filtering seam and is filtered by the plastic carbon fiber filter cloth 50, and the filtrate flows into the waste liquid tank 54 through the bidirectional waste liquid pipe 55; the filter residue is still remained in the No. 1 hot reaction vessel 51, the power supply to the auxiliary electric heating wire 53 is stopped, the filter residue is dried by utilizing the residual heat of the water bath 521, and the aluminum silicate coating 522 is coated outside the water bath 521, so that the heat loss can be reduced;
putting the semi-finished product reacted in the No. 1 thermal reaction vessel 51 into the No. 2 thermal reaction vessel 61, screwing the spring expansion valve 581 before the reaction starts, adding a mixed reagent prepared by acetic acid and sodium chlorite into the No. 2 thermal reaction vessel 61, reacting for a period of time within the temperature range of 100-120 ℃ thermal reaction environment, constantly monitoring the water bath temperature and keeping the water bath temperature within an allowable range, and adjusting the temperature by the auxiliary electric heating wire 53 until the product in the thermal reaction vessel becomes white; stopping supplying power to the auxiliary electric heating wire 53, unscrewing the spring expansion valve 581 outwards, forming a filter gap between the magnetic adsorption ring 584 and the support rod 583, filtering the liquid flowing out of the filter gap through the plastic carbon fiber filter cloth 50, and flowing the filtrate into the waste liquid tank 54 through the bidirectional waste liquid pipe 55; filter residues still remain in the No. 1 thermal reaction vessel, cold water in the water storage tank 14 is pumped into the wall-attached cold water pipe 62, the cold water is stored to the phase-change heat storage tank 15 through the heat exchange water pipe 12 after heat in the water bath is taken away, the cold water is washed by distilled water and acetone after complete cooling is confirmed, the filter chamber 7 is dried after repeated filtering operation, in addition, the phase-change heat storage tank 15 is communicated with an external living pipeline, and the hot water is provided for workers besides the heat supply requirement of the system.
The phase-change heat storage tank 15 used in the present embodiment can be implemented by the following devices: the model is as follows: QM-0000, manufacturer: the product is happy and fruity. Related references: a phase change heat storage device, a solar heat utilization system applying the device and an operation mode are authorized to be published as follows: CN104266523B.
The automated vacuum drying chamber 21 used in the present embodiment can be implemented by the following means: the vacuum drying technology is widely applied to drying thermosensitive materials in the industries of medicine, chemical industry, food, electronics, traditional Chinese medicine and the like (released by Zibovor gas equipment Co., ltd.). Related references: authorization publication number of large plate assembly of automatic vacuum drying equipment: CN214065453U; authorization publication number of high-efficiency flat plate vacuum drying oven: CN215724575U. The used glass fiber heat conduction silica gel conveyer belt 23 of this embodiment: glass fibre heat conduction silica gel is current material, and toughness is good, durable, high shear strength, anti impaling tear resistance draw, and silica gel conveyer belt manufacturer: ongchuan EVERLAR. Related references: authorized publication No. 'mica tape with good thermal conductivity': CN211879140U; a silica gel glass fiber frosted baking pad and a preparation method thereof are disclosed in application publication No.: CN110948968A.
The hot screen chamber 41 used in this embodiment can be implemented by the following means: related references: authorization publication No. of thermal sieve device for compound fertilizer production: CN215235705U; a recovery processing device for residual straw in paddy field application publication No.: CN111837596A; a hot air sintering waste heat utilization system and a utilization method thereof are authorized to be published as follows: CN101532783B.
The rotatable discharge port 43 used in this embodiment can be implemented by the following means: related references: discharge gate that rotary tablet press was prevented blockking up "authorizes publication no: CN216832408U; material elevator with rotatable discharge port publication No.: CN213230654U.
The plastic carbon fiber filter cloth 50 used in the present embodiment can be implemented by the following means: related references: "a filter cloth with corrosion-resistant function" application publication no: CN109011839A; an embedded filter cloth authorization publication number: CN213253174U.
Magnetic attraction ring 584 used in the present embodiment: the manufacturer: dongshilong technology (Shenzhen) Limited.
The flexible nanofiber membrane 585 used in this embodiment can be implemented in the following devices: the manufacturer: ningbo Rou nanotechnology, inc. Related references: a beta-chitin nanofiber flexible film with high transparency and low haze and a preparation method thereof, application publication No.: CN112679769A; a preparation method of a fiber composite gel flexible membrane comprises the following steps: application publication No.: CN114934394A.

Claims (4)

1. An integrated cellulose extraction system based on thermoelectric coupling is characterized by comprising an automatic vacuum drying system, a solar thermoelectric coupling system, a heat screening system and an integrated thermal reaction system;
the automatic vacuum drying system comprises a primary crushing machine (25), a secondary crushing machine (3), an automatic vacuum drying chamber (21), a timing vacuum pump (22), a glass fiber heat-conducting silica gel conveyor belt (23) and absorbent cotton (27); the automatic vacuum drying chamber (21) provides a closed vacuum environment for drying reaction; the timing vacuum pump (22) is connected with the automatic vacuum drying chamber (21) and starts to work at intervals; the top of the automatic vacuum drying chamber (21) is provided with moisture absorption cotton (27), the glass fiber heat conduction silica gel conveyor belt (23) is installed progressively, and the straw which is crushed primarily is driven to complete primary drying work while the conveyor belt slides slowly; the primary crushing machine (25) is embedded into the top of the automatic vacuum drying chamber (21) and used for primary crushing, a groove type feeding port (24) is formed in the top of the primary crushing machine (25), a discharging port (26) in the bottom of the primary crushing machine (25) is arranged at the upper edge of the uppermost glass fiber heat-conducting silica gel conveyor belt (23), and the tail end of the lowermost glass fiber heat-conducting silica gel conveyor belt (23) is positioned above the discharging port of the automatic vacuum drying chamber (21); the secondary crushing machine (3) is arranged at the position of a discharge hole of the automatic vacuum drying chamber (21) and receives the raw materials which are crushed and dried primarily in the automatic vacuum drying chamber (21) to finish the final crushing work; the glass fiber heat-conducting silica gel conveyor belts (23) are installed in a progressive mode, namely, the glass fiber heat-conducting silica gel conveyor belts are installed in a staggered mode from top to bottom, the tail end of each layer of glass fiber heat-conducting silica gel conveyor belt (23) is shorter than the initial end of the next layer of glass fiber heat-conducting silica gel conveyor belt (23), and hot water pipes are installed at the bottoms of the glass fiber heat-conducting silica gel conveyor belts (23);
the solar thermoelectric coupling system comprises a CPC type condenser (11) installed at the top of an automatic vacuum drying chamber (21);
the hot screen system comprises a hot screen chamber (41), a blower (42), a 30-mesh screen (441), a 60-mesh screen (442), a rotatable discharge port (43) and a hot screen chamber feed port (45); a feed inlet (45) of the hot screen chamber is connected with a discharge outlet of the secondary crushing machine (3); the blower (42) is arranged at the upper right corner of the hot screen chamber (41), the 30-mesh screen (441) and the 60-mesh screen (442) are arranged at the lower left corner of the hot screen chamber (41) in sequence from top to bottom, the rotatable discharge hole (43) is arranged at the lower side corner of the 60-mesh screen, and forms an oblique diagonal line with the blower (42), so that the discharge direction can be adjusted according to the requirement;
the integrated thermal reaction system comprises a No. 1 thermal reaction vessel (51) and a No. 2 thermal reaction vessel (61) which are erected in a water bath (521) by means of an arc-shaped support (56); the No. 1 thermal reaction vessel (51) and the No. 2 thermal reaction vessel (61) are internally provided with a filtering device; the filtering device comprises a supporting rod (583), a plastic carbon fiber filter cloth (50), a magnetic adsorption ring (584), a flexible nanofiber membrane (585), an annular inner partition plate (586), a spring (582) and a spring expansion valve (581); an aluminum silicate coating (522) is coated on the outer side of a water bath (521) of the No. 1 thermal reaction vessel (51), and an auxiliary electric heating wire (53) is arranged in an auxiliary electric heating cavity and positioned at the bottom of the water bath (521); the bidirectional waste liquid pipe (55) passes through the outer wall of the water bath (521) and is erected on the water bath, and two ends of the bidirectional waste liquid pipe are respectively communicated with two waste liquid tanks (54), wherein the waste liquid pipe in the No. 2 thermal reaction vessel only passes through the outer wall of the water bath (521), and the waste liquid pipe in the No. 1 thermal reaction vessel sequentially passes through the outer wall of the water bath (521) and the aluminum silicate coating (522); the plastic carbon fiber filter cloth (50) is attached to the bottoms of the No. 1 thermal reaction vessel (51) and the No. 2 thermal reaction vessel (61), wherein the joint position of the reaction vessel and the bidirectional waste liquid pipe (55) is communicated, and the communicated channel is covered by the plastic carbon fiber filter cloth (50), so that the filtrate in the filtering channel smoothly flows into the bidirectional waste liquid pipe (55) through the plastic carbon fiber filter cloth (50); an adherence cold water pipe (62) is arranged on the outer wall of the No. 2 thermal reaction vessel (61) in a surrounding way, and the adherence cold water pipe (62) is communicated with the water storage tank (14) through a pipeline; a magnetic force adsorption ring (584) in the filtering device is composed of two half-ring structures, one ends of the two half-ring structures are rotationally connected, the other ends of the two half-ring structures can be opened with a certain opening, and when the opening is closed, the inner peripheries of the two half-ring structures are tightly adsorbed on the outer wall of a supporting rod (583); a circle of flexible nanofiber membrane (585) is arranged at the bottom of the outer ring periphery of the two semi-ring structures in a surrounding mode, the lower hem of the flexible nanofiber membrane (585) is fixedly arranged on the inner ring periphery of the annular inner baffle plate (586), the outer ring periphery of the annular inner baffle plate (586) is fixedly arranged on the inner walls of the No. 1 thermal reaction vessel (51) and the No. 2 thermal reaction vessel (61) and is positioned above the plastic carbon fiber filter cloth (50), and a closed thermal reaction space formed by the inner wall of the thermal reaction vessel, the annular inner baffle plate (586), the flexible nanofiber membrane (585) and the magnetic adsorption ring (584) is formed; the inner end of the spring expansion valve (581) is connected with one end of a spring (582), and the other end of the spring (582) is connected with the interface end at one side of one flap of the magnetic force adsorption ring (584); when the thermal reaction is carried out, the spring (582) is tightened by screwing the spring expansion valve (581) inwards, so that the magnetic adsorption ring (584) is closed under the pulling force of the attraction force and adsorbed on the support rod (583), and a closed thermal reaction space is formed among the annular inner partition plate (586), the flexible nanofiber membrane (585), the magnetic adsorption ring (584) and the inner wall of the reaction vessel; when the filtration operation is carried out, the spring (582) is stretched by unscrewing the spring expansion valve (581), so that one half of the magnetic adsorption ring (584) is forced to be separated from the other half by external force, a filtration seam is formed between the magnetic adsorption ring and the support rod (583), the other half of the magnetic adsorption ring (584) is still adsorbed on the support rod (583), at the moment, the opened end of the magnetic adsorption ring (584) depends on the outer pipe of the interface end spring (582) and the other end still adsorbed on the support rod (583) to be suspended on a plane, the flexible nanofiber membrane (585) is stretched by virtue of the flexible action of the flexible adsorption ring and still surrounds the outer circumference of the magnetic adsorption ring (584), and is not separated, so that a fiber membrane filtrate channel is formed between the magnetic adsorption ring (584) and the annular inner partition plate (586), and the filtration is realized; the bottom of the support rod (583) sequentially penetrates through the bottom of the reaction vessel, the plastic carbon fiber filter cloth (50), the annular inner partition plate (586) and the magnetic adsorption ring (584), and is fixedly arranged on the bidirectional waste liquid pipe (55) by a fixing knob (57);
the water storage tank (14), the CPC condenser (11) and the phase change heat storage tank (15) are connected in sequence through a heat exchange water pipe (12); a water pump (13) and a one-way valve (17) are sequentially arranged between the water storage tank (14) and the CPC condenser (11), and a liquid separation valve (16) is arranged between the CPC condenser (11) and the phase-change heat storage tank (15); the liquid separating valve (16) is used for enabling high-temperature water absorbed by the photovoltaic cell to flow into a hot water pipe on the inner wall of the uppermost glass fiber heat-conducting silica gel conveyor belt (23), the tail end of the hot water pipe in the upper glass fiber heat-conducting silica gel conveyor belt (23) is connected with the starting end of the hot water pipe in the lower glass fiber heat-conducting silica gel conveyor belt (23), and the outlet of the hot water pipe of the last glass fiber heat-conducting silica gel conveyor belt (23) is connected to a cold water inlet of the photovoltaic cell through a heat exchange water pipe (12) and a water pump and a one-way valve (17); the heat sieve chamber (41) is directly connected with the phase-change heat storage tank (15) by a heat exchange water pipe (12) to form a water heat exchange circulation loop; hot water from a phase change heat storage tank (15) is injected into the water bath through a heat exchange water pipe (12) to form a water heat exchange circulation loop; a stop valve (18) is installed on the heat exchange water pipe (12), an adherent cold water pipe (62) is arranged on the outer wall of the No. 2 thermal reaction vessel (61) in a surrounding mode, the inlet of the cold water pipe (62) is connected with the water storage tank (14), the outlet of the cold water pipe (62) is communicated with the phase-change heat storage tank (15), and the photovoltaic cell is communicated with the electricity storage tank (19) through a circuit; the auxiliary electric heating wire (53) is communicated with the electric storage box (19) through a circuit, and the drying chamber (7) is connected into the phase change heat storage box (15) through a heat exchange water pipe (12) to form a water heat exchange circulation loop.
2. The integrated cellulose extraction system based on thermoelectric coupling as claimed in claim 1, wherein the glass fiber heat-conducting silica gel conveyor belt (23) comprises three layers, and a concave pipe (281), an inverted concave pipe (282) and a square-shaped pipe (283) are laid on the inner wall of the conveyor belt from top to bottom.
3. The integrated cellulose extraction system based on thermoelectric coupling as claimed in claim 1, wherein the glass fiber heat conductive silica gel conveyor belt (23) presents an inverted "shape at the tail blanking position.
4. The integrated thermocouple-based cellulose extraction system of claim 1, wherein the inner diameter of said annular internal partition (586) is larger than the outer diameter of the support rod (583).
CN202211458982.XA 2022-11-18 2022-11-18 Integrated cellulose extraction system based on thermoelectric coupling Active CN115726211B (en)

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JP2003164836A (en) * 2001-11-30 2003-06-10 Jiro Sasaoka Method and apparatus for heat-treating waste and molded product
WO2010068288A2 (en) * 2008-12-11 2010-06-17 Joule Biotechnologies, Inc. Solar biofactory, photobioreactors, passive thermal regulation systems and methods for producing products
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CN104532644A (en) * 2014-12-15 2015-04-22 江南大学 Method for extracting high-content cellulose from straws
CN104820363A (en) * 2015-03-09 2015-08-05 山东大学 Combined cooling, heating and power system based on biomass gas and energy optimization control method
CN108218180A (en) * 2018-02-09 2018-06-29 西安交通大学 Optically focused frequency division type solar energy drying sludge, household heating integral system, method
CN115058911A (en) * 2022-03-23 2022-09-16 呼和浩特民族学院 Method for extracting cellulose from cellulose and buckwheat straws

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB383616A (en) * 1930-02-14 1932-11-17 Jules Eugene Goux Method and installation for transforming the heavy hydrocarbons into products with low boiling point
JP2003164836A (en) * 2001-11-30 2003-06-10 Jiro Sasaoka Method and apparatus for heat-treating waste and molded product
WO2010068288A2 (en) * 2008-12-11 2010-06-17 Joule Biotechnologies, Inc. Solar biofactory, photobioreactors, passive thermal regulation systems and methods for producing products
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