CN115726211B - Integrated cellulose extraction system based on thermoelectric coupling - Google Patents
Integrated cellulose extraction system based on thermoelectric coupling Download PDFInfo
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- CN115726211B CN115726211B CN202211458982.XA CN202211458982A CN115726211B CN 115726211 B CN115726211 B CN 115726211B CN 202211458982 A CN202211458982 A CN 202211458982A CN 115726211 B CN115726211 B CN 115726211B
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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 is used for realizing preliminary crushing and drying of grape straws, wherein a CPC condenser is arranged at the top of the automatic vacuum drying chamber; the heat screen chamber utilizes heat in the phase change heat storage box to realize secondary drying and crushing of the raw materials; two thermal reaction vessels are erected in the water bath kettle and used for providing a thermal reaction environment (100 ℃ -120 ℃) for chemical extraction, and the integrated processes of thermal reaction, filtration and drying can be realized in the water bath kettle. The invention utilizes grape straw to extract cellulose, combines a CPC condenser to realize thermoelectric coupling, does not need additional energy supply, solves the problem that a large amount of heat sources are required to be consumed in the traditional cellulose preparation process, realizes accurate temperature control, and simultaneously is energy-saving, environment-friendly and sustainable.
Description
Technical Field
The invention relates to the field of extraction of cellulose in grape straws, in particular to an integrated cellulose extraction system based on thermoelectric coupling.
Background
In Xinjiang areas of China, due to the special geographical position environment, the grape yield is rich, a large amount of grape straws are generated in succession, traditional grape farmers use a sun-curing and burning mode to treat the straws or use the straws as firewood, and a large amount of harmful gas is generated by burning, so that the environment is polluted; in addition, a few grape farmers can bury grape straws on site, so that the method has the least pollution to the environment, but the soil formation process is extremely slow, and the later planting process can be influenced, so that 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 cellulose extracted from plants can be applied to the fields of food, wastewater treatment and the like, and has wide application, so that people are increasingly researching and developing the cellulose. The traditional cellulose extraction method needs to consume a large amount of heat sources to maintain the thermal reaction environment, and meanwhile, the processes of drying, crushing, acid-base reaction and the like are complicated, and the environment friendliness is poor and is not 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 utilizing solar energy, which is energy-saving, environment-friendly, green and sustainable, and is based on the grape straws and utilizes solar photo-thermal photoelectric coupling to extract cellulose.
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 screen system and an integrated thermal reaction system;
the automatic vacuum drying system comprises a primary crusher 25, a secondary crusher 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 automated 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, and the glass fiber heat conduction silica gel conveyor belt 23 is progressively installed and slowly slides to drive the primary crushed straw to finish primary drying work; the first-stage crushing machine 25 is embedded and arranged at the top of the automatic vacuum drying chamber 21 and is used for preliminary crushing, a groove type feeding port 24 is formed in the top of the first-stage crushing machine 25, a discharging port 26 at the bottom of the first-stage crushing machine 25 is arranged at the upper edge of the uppermost-layer glass fiber heat-conducting silica gel conveyor belt 23, and the tail end of the lowermost-layer glass fiber heat-conducting silica gel conveyor belt 23 is positioned above the discharging port of the automatic vacuum drying chamber 21; the secondary crusher 3 is placed at the position of a discharge hole of the automatic vacuum drying chamber 21 and receives the raw materials which are primarily crushed and dried in the automatic vacuum drying chamber 21, so as to finish the final crushing work; the progressive installation of the glass fiber heat-conducting silica gel conveyor belt 23 means that the glass fiber heat-conducting silica gel conveyor belt 23 is installed in a staggered manner 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 the bottom of the glass fiber heat-conducting silica gel conveyor belt 23 is provided with a hot water pipe.
The solar thermal electric coupling system includes a CPC type condenser 11 installed at the top of an automated vacuum drying chamber 21;
the heat screen system comprises a heat screen chamber 41, a blower 42, a 30-mesh screen 441, a 60-mesh screen 442, a rotatable discharge port 43 and a heat screen chamber feed port 45; the feeding hole 45 of the heat screen chamber is connected with the discharging hole of the secondary crusher 3; the blower 42 is arranged at the upper right corner of the heat screen chamber 41, the 30-mesh screen 441 and the 60-mesh screen 442 are arranged at the lower left corner of the heat screen chamber 41 according to the arrangement sequence from top to bottom, the rotatable discharge port 43 is arranged at the lower side corner of the 60-mesh screen, and an inclined diagonal line is formed with the blower 42, so that the discharge direction can be adjusted according to the requirement; the upper and lower arrangement of the 30-mesh screen 441 and the 60-mesh screen 442 can finish the fine screening work on one hand, and prolong the stay time of the straw powder in the hot screen chamber 41 on the other hand, so as to thoroughly dry;
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 virtue of an arc-shaped bracket 56; the heat reaction vessel 51 of the No. 1 and the heat reaction vessel 61 of the No. 2 are internally provided with filter devices; the filtering device comprises a supporting rod 583, a plastic carbon fiber filter cloth 50, a magnetic force adsorption ring 584, a flexible nanofiber membrane 585, an annular inner partition 586, a spring 582 and a spring expansion valve 581; the outside of the water bath 521 of the heat reaction vessel 51 of the No. 1 is coated with an aluminum silicate coating 522, and the auxiliary electric heating wires 53 are arranged in the auxiliary electric heating cavity and positioned at the bottom of the water bath 521; the two-way waste liquid pipe 55 passes through the outer wall of the water bath 521 and is erected on the water bath, two ends of the two-way 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 passes through the outer wall of the water bath 521 and the aluminum silicate coating 522 in sequence; 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 positions of the reaction vessel and the two-way waste liquid pipe 55 are opened, and the opened channel is covered by the plastic carbon fiber filter cloth 50, so that the filtrate in the filtering channel smoothly flows into the two-way waste liquid pipe 55 through the plastic carbon fiber filter cloth 50; the wall of the No. 2 thermal reaction vessel 61 is surrounded by an adherence cold water pipe 62, and the adherence cold water pipe 62 is communicated with the water storage tank 14 through a pipeline; the magnetic adsorption ring 584 in the filtering device is composed of two semi-ring structures, one ends of the two semi-rings are rotationally connected, the other ends of the two semi-rings can open a certain opening, and when the opening is closed, zhou Jun in the two semi-ring structures is tightly adsorbed on the outer wall of the supporting rod 583; the bottoms of the outer circumferences of the two semi-ring structures are surrounded by a circle of flexible nanofiber membrane 585, the lower hem of the flexible nanofiber membrane 585 is fixedly surrounded on the inner circumference of the annular inner partition plate 586, the outer circumferences of the annular inner partition plate 586 are fixedly arranged on the inner walls of the No. 1 thermal reaction vessel 51 and the No. 2 thermal reaction vessel 61 and are positioned above the plastic carbon fiber filter cloth 50, so that a closed thermal reaction space formed by the inner walls of the thermal reaction vessel, the annular inner partition plate 586, the flexible nanofiber membrane 585 and the magnetic force adsorption ring 584 is formed; the inner end of the spring telescopic 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 magnetic force adsorption ring 584; when the thermal reaction is performed, the spring 582 is tightened by screwing the spring telescopic valve 581 inwards, so that the magnetic force adsorption ring 584 is closed under the pulling force of the attractive force and is adsorbed on the support rod 583, and a sealed thermal reaction space is formed among the annular inner partition 586, the flexible nanofiber membrane 585, the magnetic force adsorption ring 584 and the inner wall of the reaction vessel; when the filtering operation is performed, the spring expansion valve 581 is outwards unscrewed to stretch the spring 582, so that one half of the magnetic adsorption ring 584 is forced to be separated from the other half by external force, a filtering gap is formed between the magnetic adsorption ring 584 and the supporting rod 583, the other half of the magnetic adsorption ring 584 is still adsorbed on the supporting rod 583, at the moment, one opened end of the magnetic adsorption ring 584 is suspended on a plane by means of the outer tube of the interface end spring 582 and the other end still adsorbed on the supporting rod 583, the flexible nanofiber membrane 585 is stretched by virtue of the flexible function of the flexible nanofiber membrane 585, and still surrounds the outer circumference of the magnetic adsorption ring 584, and is not separated, so that a fiber membrane filtering liquid channel is formed between the magnetic adsorption ring 584 and the annular inner partition 586, and filtering is realized. The bottom of the supporting 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 force adsorption ring 584, and is installed and 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 sequentially connected 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 type condenser 11, and a liquid separating valve 16 is arranged between the CPC type condenser 11 and the phase change heat storage tank 15; the liquid separating valve 16 is used for separating high-temperature water absorbed by the photovoltaic cells 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 initial 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 in the last glass fiber heat-conducting silica gel conveyor belt 23 is connected into the cold water inlet of the photovoltaic cells through the heat exchange water pipe 12, the water pump and the one-way valve 17; the heat screen chamber 41 is directly connected with the phase change heat storage box 15 by utilizing a heat exchange water pipe 12 to form a water heat exchange circulation loop; the water bath is filled with 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; the heat exchange water pipe 12 is provided with a stop valve 18, the outer wall of a No. 2 thermal reaction vessel 61 is surrounded by an attached cold water pipe 62, 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 power 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 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 is formed by three layers, namely, a concave-shaped pipe 281, an inverted concave-shaped pipe 282 and a back-shaped pipe 283 are sequentially paved on the inner wall of the conveyor belt from top to bottom.
Further, the glass fiber heat-conducting silica gel conveyor belt 23 presents an inverted shape at the tail blanking position.
Further, the inner diameter of the annular inner partition 586 is greater than the outer diameter of the support rod 583.
The invention has the beneficial effects that: the cellulose is extracted by using grape straws, a CPC type condenser high-power concentrating power generation system is used for providing photoelectric light and heat, so that additional nonrenewable energy sources are not required to be consumed, the energy is saved, the environment is protected, and the production cost is reduced; the vacuum chamber drying and the heat screen chamber drying are combined to realize the full and thorough drying process without consuming too much labor force; the heat reaction process and the filtering process are switched by utilizing the expansion and contraction of the spring expansion valve, meanwhile, the heat reaction and the filtering are realized in the water bath, the aluminum silicate coating and the auxiliary electric heating wire are utilized for controlling the temperature, the cooling is realized by attaching the cooling water pipe, and the whole heat circulation system is connected, so that the heat reaction system 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 thermal screen system;
FIG. 4 is a diagram of an integrated thermal reaction system in which a "No. 1" thermal reaction vessel is located;
FIG. 5 is a diagram of an integrated thermal reaction system in which a "No. 2" thermal reaction vessel is located;
FIG. 6 is a front view of a filter device as a thermal reaction proceeds;
FIG. 7 is a top view of a filter apparatus as a thermal reaction proceeds.
Fig. 8 is a front view of the filtering operation performed.
In the figure: 11-CPC type condenser; 12-a heat exchange water pipe; 13-a water pump; 14-a water storage tank; 15-a phase change heat storage box; 16-a liquid separating valve; 17-a one-way valve; 18-a shut-off valve; 19-an electric storage box; 21-an automated vacuum drying chamber; 22-a timed vacuum pump; 23-glass fiber heat-conducting silica gel conveyor belt; 24-groove type feeding port; 25-first-stage crushing machine; 26-a discharge hole; 27-absorbent cotton; 281- "concave" tube; 282- "inverted concave" tube; 283- "Hui-shaped" tube; 3-a secondary crusher; 41-a heat screen chamber; 42-blower; 43-rotatable discharge port; a 441-30 mesh screen; 442-60 mesh sieve; 45-a feeding port of the heat screen chamber; 50-plastic carbon fiber filter cloth; 51- "number 1" thermal reaction vessel; 521-a water bath kettle; 522-aluminum silicate coating; 53-auxiliary electric heating wires; 54-a waste liquid tank; 55-a two-way waste pipe; 56-arc-shaped brackets; 57-fixing the knob; 581-spring telescoping valve; 582-spring; 583-support bar; 584-a magnetic force adsorption ring; 585-flexible nanofiber membrane; 586-an annular inner separator; 61- "number 2" hot reaction dish; 62-attaching a cooling water pipe; 7-drying chamber.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings. The following drawings are simplified schematic representations which illustrate the basic structure of the invention by way of illustration only, and therefore show only the construction associated with the invention.
Example 1
As shown in fig. 1-8, the invention provides an integrated cellulose extraction system based on thermoelectric coupling, which mainly comprises an automatic vacuum drying system, a solar thermoelectric coupling system, a heat screen 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 cell unit at the lower side of the CPC type condenser 11 by a water pump 13 through a heat exchange water pipe 12, the temperature is raised after the heat of the surface of the photovoltaic cell is absorbed, the solar thermoelectric coupling system is stored in a phase change heat storage box 15 through the heat exchange water pipe 12, hot water in the midway heat exchange water pipe 12 is shunted by a liquid separation valve 16 and enters the automatic vacuum drying chamber 21, a concave-shaped pipe 281, an inverted concave-shaped pipe 282 and a return-shaped pipe 283 on the lower surface of a glass fiber heat conducting silica gel conveyor belt 23 are used for circulating the hot water coming in by the heat exchange water pipe 12, after heat exchange is finished, medium-temperature water is discharged through a water outlet of the return-shaped pipe 283, the medium-temperature water is connected into a cold water inlet end at the bottom of the photovoltaic cell unit of the CPC type condenser 11 by a one-way valve 17, the heat is absorbed again, and the photovoltaic cell is communicated to a CPC power storage box 19 by a circuit;
the grape straw is put into a groove type feeding port 24, the preliminary crushing task is completed in a first-stage crushing machine 25, the grape straw enters an automatic vacuum drying chamber 21 through a discharging port 26, the primarily crushed grape straw is dried and transported from top to bottom under the slow driving of a glass fiber heat-conducting silica gel conveyor belt 23, moisture-absorbing cotton 27 at the top of the drying chamber is used for absorbing moisture evaporated in the grape straw drying process, and a timing vacuum pump 22 timely operates to extract air in the automatic vacuum drying chamber 21, so that a vacuum environment is created for the drying process;
the primarily dried grape straw is sent to a secondary crusher 3;
the completely crushed grape straw enters the heat screen chamber 41 from the heat screen chamber feed port 45, the heat screen chamber 41 is communicated with the phase change heat storage box 15 through a heat exchange water pipe, a heat source in the phase change heat storage box 15 provides heat for the heat screen process, the blower 42 is arranged at the upper right corner of the heat screen chamber and provides power for grape straw powder entering from the heat screen chamber feed port, the lower left corner of the heat screen chamber is sequentially surrounded by a 30-mesh sieve 441 and a 60-mesh sieve 442 from top to bottom, on one hand, the fine screening work is completed, on the other hand, the retention time of the grape straw powder in the heat screen chamber 41 is prolonged, the thoroughly drying is realized, and the straw powder after the heat screen is sent out from the rotatable discharge port 43;
the 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 bracket 56, a stop valve 18 is closed, hot water in a phase-change heat storage tank 15 respectively flows into the water bath 521 through a heat exchange water pipe 12, 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, the spring expansion valve 581 is tightly screwed to compress the spring 582, the magnetic force adsorption ring 584 is tightly adsorbed on the supporting rod 583 fixed on the bidirectional waste liquid pipe 55 by virtue of the fixing knob 57, a thermal reaction space is formed by the inner wall of the thermal reaction vessel, the magnetic force adsorption ring 584, the flexible nanofiber membrane 585 and the annular inner partition 586, 4% sodium hydroxide solution is added into the 'No. 1' thermal reaction vessel 51 to immerse grape straw powder, the grape straw powder reacts for a period of time within the thermal reaction environment temperature range of 100-120 ℃, the water bath temperature is monitored constantly and kept within the allowable range, and the temperature is regulated by the auxiliary electric heating wire 53; after a period of time, the spring expansion valve 581 is unscrewed outwards, a filtering seam is formed between 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, filtering is completed through the plastic carbon fiber filter cloth 50, and filtrate flows into the waste liquid tank 54 through the bidirectional waste liquid pipe 55; the filter residue is still left in the No. 1 thermal reaction vessel 51, the power supply to the auxiliary electric heating wire 53 is stopped, the filter residue is dried by using the waste heat of the water bath 521, and the water bath 521 is coated with a layer of aluminum silicate coating 522, so that the heat loss can be reduced;
the semi-finished product of the reaction of the 'No. 1' thermal reaction vessel 51 is put into a 'No. 2' thermal reaction vessel 61, a spring expansion valve 581 is screwed before the reaction starts, the 'No. 2' thermal reaction vessel 61 is added with a mixed reagent prepared by acetic acid and sodium chlorite, the reaction is carried out for a period of time within the thermal reaction environment temperature range of 100-120 ℃, the water bath temperature is monitored constantly and kept within an allowable range, and the temperature is regulated by an 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 filtering gap between the magnetic adsorption ring 584 and the support rod 583, allowing liquid to flow out of the filtering gap, filtering through the plastic carbon fiber filter cloth 50, and allowing filtrate to flow into the waste liquid tank 54 through the bidirectional waste liquid pipe 55; the filter residue is still remained in the 'No. 1' thermal reaction vessel, cold water in the water storage tank 14 is pumped in the attached cold water pipe 62, heat in the water bath is taken away and then stored into the phase change heat storage tank 15 through the heat exchange water pipe 12, distilled water and acetone are used for washing after complete cooling is confirmed, drying is carried out in the drying chamber 7 after repeated filtering operation, and in addition, the phase change heat storage tank 15 is connected with an external living pipeline to provide living hot water for staff in addition to the system heat supply requirement.
The phase change heat storage tank 15 used in the present embodiment may be implemented by the following means: model: QM-0000, manufacturer: happy and complete. Related references: "a phase change heat storage device, solar heat utilization system using the device and operation mode" authorized publication number: CN104266523B.
The automated vacuum drying chamber 21 used in this embodiment may be implemented by the following means: the vacuum drying technology has been widely used for drying heat-sensitive materials (published by the Tabo Ward gas Equipment Co., ltd.) in the industries of medicine, chemical industry, food, electronics, chinese medicine and the like. Related references: an authorized publication number of an automatic vacuum drying equipment large plate assembly: CN214065453U; the authorized publication number of the efficient flat vacuum drying oven is as follows: CN215724575U. Glass fiber heat conduction silica gel conveyor belt 23 used in this embodiment: the glass fiber heat conduction silica gel is the existing material, has good toughness, is firm, has high shear strength, is puncture-resistant and tear-resistant, and is manufactured by silica gel conveyor belt manufacturers: optimum Everlar. Related references: the "mica tape with good thermal conductivity" authorized publication number: CN211879140U; silica gel glass fiber frosted baking pad and preparation method thereof, application publication number: CN110948968A.
The heat screen chamber 41 used in this embodiment may be implemented by the following means: related references: "Heat Screen device for Compound fertilizer production" authorized publication number: CN215235705U; "recovery processing device for residual straw in paddy field", application publication number: CN111837596a; "System for utilizing waste heat of hot air sintering" and its utilization method "authorized publication number: CN101532783B.
The rotatable discharge port 43 used in this embodiment may be implemented by the following means: related references: the authorized publication number of the anti-blocking discharge port of the rotary tablet press is as follows: CN216832408U; publication number of material hoister with rotatable discharge hole: CN213230654U.
The plastic carbon fiber filter cloth 50 used in this embodiment can be realized by the following means: related references: the application publication number of the filter cloth with the corrosion resistance: CN109011839a; "an embedded filter cloth" authorized publication number: CN213253174U.
The magnetic force used in this example adsorbs ring 584: the manufacturing factory: dongshenglong technology (Shenzhen) Limited.
The flexible nanofiber membrane 585 used in this embodiment may be implemented by the following means: the manufacturing factory: ningbo soft wound nanotechnology Co. Related references: "high transparency low haze beta-chitin nanofiber flexible film and preparation method thereof" application publication number: CN112679769a; preparation method of a fiber composite gel flexible film: application publication number: CN114934394a.
Claims (4)
1. The integrated cellulose extraction system based on thermoelectric coupling is characterized by comprising an automatic vacuum drying system, a solar thermoelectric coupling system, a heat screen system and an integrated thermal reaction system;
the automatic vacuum drying system comprises a first-stage crusher (25), a second-stage crusher (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); an 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), a glass fiber heat conduction silica gel conveyor belt (23) is progressively installed, and the straw which is crushed in a primary way is driven to finish primary drying work while slowly sliding; the first-stage crushing machine (25) is embedded and arranged at the top of the automatic vacuum drying chamber (21) and is used for preliminary crushing, a groove type feeding port (24) is formed in the top of the first-stage crushing machine (25), a discharging port (26) at the bottom of the first-stage crushing machine (25) is arranged at the upper edge of the uppermost-layer glass fiber heat-conducting silica gel conveying belt (23), and the tail end of the lowermost-layer glass fiber heat-conducting silica gel conveying belt (23) is positioned above the discharging port of the automatic vacuum drying chamber (21); the secondary crusher (3) is placed at the position of a discharge hole of the automatic vacuum drying chamber (21), receives the raw materials which are primarily crushed and dried in the automatic vacuum drying chamber (21), and completes the final crushing work; the progressive installation of the glass fiber heat-conducting silica gel conveyor belts (23) means that the glass fiber heat-conducting silica gel conveyor belts (23) are sequentially staggered 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 arranged at the bottoms of the glass fiber heat-conducting silica gel conveyor belts (23);
the solar thermoelectric coupling system comprises a CPC condenser (11) arranged at the top of an automatic vacuum drying chamber (21);
the heat screen system comprises a heat screen chamber (41), a blower (42), a 30-mesh screen (441), a 60-mesh screen (442), a rotatable discharge port (43) and a heat screen chamber feed port (45); the feeding hole (45) of the heat screen chamber is connected with the discharging hole of the secondary crusher (3); the air blower (42) is arranged at the right upper corner of the heat screen chamber (41), the 30-mesh screen (441) and the 60-mesh screen (442) are arranged at the left lower corner of the heat screen chamber (41) according to the arrangement sequence from top to bottom, the rotatable discharge port (43) is arranged at the side lower corner of the 60-mesh screen, and an oblique diagonal line is formed with the air 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 kettle (521) by means of an arc-shaped bracket (56); the heat reaction vessel (51) of the No. 1 and the heat reaction vessel (61) of the No. 2 are internally provided with filter devices; 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); the outside of a water bath pot (521) of a 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 is positioned at the bottom of the water bath pot (521); the two-way waste liquid pipe (55) penetrates through the outer wall of the water bath (521) and is erected on the water bath, two ends of the two-way 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 penetrates through the outer wall of the water bath (521), and the waste liquid pipe in the No. 1 thermal reaction vessel penetrates through the outer wall of the water bath (521) and the aluminum silicate coating (522) in sequence; 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 positions of the reaction vessel and the bidirectional waste liquid pipe (55) are communicated, and the communicated channels are covered by the plastic carbon fiber filter cloth (50), so that filtrate in the filtering channels smoothly flows into the bidirectional waste liquid pipe (55) through the plastic carbon fiber filter cloth (50); the wall of the No. 2 thermal reaction vessel (61) is surrounded by an adherence cold water pipe (62), and the adherence cold water pipe (62) is communicated with the water storage tank (14) through a pipeline; the magnetic adsorption ring (584) in the filtering device is formed by two semi-ring structures, one ends of the two semi-rings are rotationally connected, the other ends of the two semi-rings can open a certain opening, and when the opening is closed, zhou Jun in the two semi-ring structures is tightly adsorbed on the outer wall of the supporting rod (583); the bottoms of the outer circumferences of the two semi-ring structures are surrounded by a circle of flexible nanofiber membrane (585), the lower hem of the flexible nanofiber membrane (585) is fixedly surrounded on the inner circumference of the annular inner partition plate (586), the outer circumferences of the annular inner partition plate (586) are fixedly arranged on the inner walls of the No. 1 thermal reaction vessel (51) and the No. 2 thermal reaction vessel (61) and are positioned above the plastic carbon fiber filter cloth (50), so as to form a closed thermal reaction space consisting of 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); 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 magnetic force adsorption ring (584); when the thermal reaction is carried out, the spring (582) is tightened by screwing the spring telescopic valve (581) inwards, so that the magnetic force adsorption ring (584) is closed under the pulling force of the attractive force and is 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 force adsorption ring (584) and the inner wall of the reaction vessel; when the filtering operation is carried out, the spring (582) is stretched by outwards unscrewing the spring telescopic valve (581), so that one half of the magnetic force adsorption ring (584) is forced to be separated from the other half by external force, a filtering gap is formed between the magnetic force adsorption ring and the supporting rod (583), the other half of the magnetic force adsorption ring (584) is still adsorbed on the supporting rod (583), at the moment, one opened end of the magnetic force adsorption ring (584) is suspended on a plane by virtue of the outer tube of the interface end spring (582) and the other end of the magnetic force adsorption ring (583), the flexible nanofiber membrane (585) is stretched by virtue of the flexible action of the flexible nanofiber membrane, and is still wound on the outer circumference of the magnetic force adsorption ring (584) and is not separated, so that a fiber membrane filtering liquid channel is formed between the magnetic force adsorption ring (584) and the annular inner partition plate (586), and filtering is realized; the bottom of the supporting 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 the fixing knob (57);
the water storage tank (14), the CPC condenser (11) and the phase change heat storage tank (15) are connected through a heat exchange water pipe (12) in sequence; a water pump (13) and a one-way valve (17) are sequentially arranged between the water storage tank (14) and the CPC type condenser (11), and a liquid separating valve (16) is arranged between the CPC type condenser (11) and the phase change heat storage tank (15); the liquid separating valve (16) is used for separating high-temperature water absorbed by the photovoltaic cells 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 beginning end of the hot water pipe in the lower glass fiber heat-conducting silica gel conveyor belt (23), and the hot water pipe outlet of the last glass fiber heat-conducting silica gel conveyor belt (23) is connected into the cold water inlet of the photovoltaic cells through the heat exchange water pipe (12) through the water pump and the one-way valve (17); the heat screen chamber (41) is directly connected with the phase change heat storage box (15) by utilizing a heat exchange water pipe (12) to form a water heat exchange circulation loop; hot water from the phase-change heat storage tank (15) is injected into the water bath kettle through the heat exchange water pipe (12) to form a water heat exchange circulation loop; a stop valve (18) is arranged on the heat exchange water pipe (12), an adherence cold water pipe (62) is surrounded on the outer wall of the No. 2 thermal reaction vessel (61), an inlet of the cold water pipe (62) is connected with the water storage tank (14), an 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 power 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 according to claim 1, wherein the glass fiber heat-conducting silica gel conveyor belt (23) is formed by three layers, namely a concave pipe (281), an inverted concave pipe (282) and a return pipe (283) are sequentially paved on the inner wall of the conveyor belt from top to bottom.
3. The integrated cellulose extraction system based on thermoelectric coupling as recited in claim 1, wherein said glass fiber heat conductive silica gel conveyor belt (23) presents an inverted "table" shape at the tail blanking.
4. The integrated cellulose extraction system based on thermal electric coupling of claim 1, wherein the inner diameter of the annular inner partition (586) is greater than the outer diameter of the support bar (583).
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