CN214457774U - Movable agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device - Google Patents
Movable agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device Download PDFInfo
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- CN214457774U CN214457774U CN202022922438.9U CN202022922438U CN214457774U CN 214457774 U CN214457774 U CN 214457774U CN 202022922438 U CN202022922438 U CN 202022922438U CN 214457774 U CN214457774 U CN 214457774U
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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
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a mobile trailer, a continuous spiral feeding and discharging system, a microwave reaction system, a microwave catalytic reforming system, a separation and recovery system and a master control console which are arranged on the mobile trailer and are connected in sequence, wherein the continuous spiral feeding and discharging system comprises a storage cylinder and a spiral feeder; the microwave reaction system comprises a heptahedron microwave reaction furnace body, a microwave absorbent bed layer, a lifting type spiral stirrer and a microwave generator; the microwave catalytic reforming system comprises a catalytic pipeline and a catalyst bed layer; the separation and recovery system comprises a condensing tower, a liquid storage tank, a gas washing tank, a drying tank and a fuel gas recovery power generation assembly which are sequentially connected. The utility model discloses the device utilizes portable agriculture and forestry straw microwave-assisted fast pyrolysis polygeneration technology, handles agricultural discarded object straw, can turn into high added value biogas, wood tar, pyrolkigneous liquid stoste and biochar with the straw on the spot, and the production process does not have "three wastes" production, realizes that waste biomass complete component utilizes, green circulation zero pollution.
Description
Technical Field
The utility model relates to a portable agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device belongs to the biological energy field. Utilize the utility model discloses the device carries out continuous type microwave pyrolysis to the straw, obtains living beings charcoal, wood tar, pyrolkigneous liquid stoste, living beings combustible gas.
Background
Since the 80 th of the 20 th century, with the development of agriculture, the grain yield in China is greatly improved, the number of straws is greatly increased, meanwhile, the living standard of farmers is obviously improved, liquefied gas enters rural families, and the farmers do not take the straws as main fuels any more, so that a great deal of straw surplus is caused. Statistically, 10 million tons of straw are produced per year, and 5 million tons of straw need to be efficiently utilized. At present, a large amount of crops such as wheat, corn, rice and the like are harvested by using a combine harvester, and straws are directly left in a field after harvesting, so that the normal cultivation of the next crop is influenced. Meanwhile, most of the young and strong rural years tend to enter city service workers, most of the people who are kept are children, old people and women, and the straws cannot be carried away from the field. The problems caused by the burning and discarding of the straw by farmers are more obvious. Meanwhile, the state writes the law of forbidding to burn straws, but the law is often forbidden, the seasonal haze is severe, and the international environmental protection is always under great pressure. Although various governments strive to push straw burning prohibition work, the problem of environmental pollution caused by straw burning is still serious.
Based on the current situations that the existing biomass utilization technology is immature, the biomass resource utilization rate is low and the straw utilization is problematic in China, the invention provides the mobile straw microwave-assisted rapid pyrolysis poly-generation equipment.
SUMMERY OF THE UTILITY MODEL
To the not enough and difficult problem among the prior art, the utility model aims at providing a device of supplementary fast pyrolysis poly-generation of portable agriculture and forestry straw microwave.
The utility model discloses a following technical scheme realizes:
the movable agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device comprises a movable trailer, and a continuous spiral feeding and discharging system, a microwave reaction system, a microwave catalytic reforming system, a separation and recovery system and a main control platform which are arranged on the movable trailer and are connected in sequence, wherein the main control platform is used as a main control system;
the continuous spiral feeding and discharging system comprises a storage cylinder and a spiral feeder, wherein an inlet of the spiral feeder is communicated with the bottom of the storage cylinder;
the microwave reaction system comprises a microwave high-temperature pyrolysis furnace, wherein a feed inlet C is formed in the top of the microwave high-temperature pyrolysis furnace and is communicated with an outlet of the spiral feeder; a solid residue discharge port B is formed in the tail end of the bottom of the microwave high-temperature pyrolysis furnace and communicated with a spiral discharger, and the tail end of the spiral discharger is connected with a slag storage tank; a pyrolysis gas outlet A is arranged on the side wall of the lower part of the microwave high-temperature pyrolysis furnace;
the microwave high-temperature pyrolysis furnace comprises a heptahedron microwave reaction furnace body, a microwave absorbent bed layer arranged in the heptahedron microwave reaction furnace body and a stirrer which is hung in the heptahedron microwave reaction furnace body, wherein the tail end of the heptahedron microwave reaction furnace body is provided with a discharge conical plate, the side of the conical plate is connected with the inner wall of the heptahedron microwave reaction furnace body, the conical plate is provided with a plurality of through conical holes, and each surface of the heptahedron microwave reaction furnace body is provided with a plurality of groups of microwave generators;
the microwave catalytic reforming system comprises a catalytic pipeline and a catalyst bed layer, wherein the catalytic pipeline is used for communicating the pyrolysis gas outlet A with the separation and recovery system;
the separation and recovery system comprises a condensing tower, a liquid storage tank, a gas washing tank, a drying tank and a fuel gas recovery power generation assembly which are connected in sequence; the condensing towers of a plurality of stages are distributed in parallel, the liquid storage tank is communicated with the tail end of the condensing tower, the air inlet of the gas washing tank is communicated with the air outlets of the liquid storage tank and the condensing tower, the drying tank is communicated with the air outlet of the gas washing tank, liquid condensed by the condensing tower flows into the liquid storage tank to be stored, and other non-condensable pyrolysis gas enters the gas recovery power generation assembly to generate power and self-heat after being purified by the gas washing tank and dried by the drying tank.
Furthermore, the microwave generator adopts a half-wave rectification microwave source, and microwave energy is uniformly fed from the side surface of the polyhedral microwave cavity of the heptahedron microwave reaction furnace body.
Further, the stirrer adopts a lifting type spiral stirrer.
Further, an inductor is arranged at the feed inlet C.
Furthermore, the outer part of the heptahedron microwave reaction furnace body is insulated by adopting a fiber module and fiber cotton for light microwaves, a ceramic inner container is arranged in the furnace, and the ceramic inner container is made of wave-transparent ceramic materials.
Further, spherical silicon carbide is adopted as an absorbent of the microwave absorbent bed layer.
Furthermore, a K-shaped armored thermocouple sensor is adopted in the microwave high-temperature pyrolysis furnace chamber to carry out temperature multipoint measurement.
Further, the inside of the catalyst bed layer is filled with a high dielectric ceramic foam catalyst; the exterior of the catalytic pipeline and the catalyst bed layer are insulated by adopting a fiber module and cellucotton for light microwave.
Compared with the prior art, the utility model discloses beneficial effect includes:
(1) the device utilizes the movable agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation technology to treat the agricultural waste straws, and can convert the straws into high-added-value biogas, wood tar, wood vinegar stock solution and biochar on site; wherein the biogas is small molecular substances (hydrogen, carbon monoxide and methane) and a small amount of short carbon chain hydrocarbon, and the biogas is purified to generate power for the pyrolysis equipment to use, so that an outdoor self-heating biomass fast pyrolysis technology is formed; the wood tar system rigid polyurethane foam has excellent polyol substitute and can be used as a raw material for producing paint; the wood vinegar contains various organic acids, phenols and the like, is a good promoter for plant growth, and is also a good additive in organic fertilizer production; the biochar has a porous structure and good adsorption performance, contains mineral elements such as P, K, Na, Ca, Mg, Fe and the like, is an important nutrient element in fertilizer utilization, and can be used for soil improvement. The production process does not generate three wastes, realizes the high-efficiency utilization of agricultural wastes, and is green, cyclic and pollution-free.
(2) The utility model discloses the device utilizes novel catalyst coupling microwave to concatenate fast pyrolysis catalysis technique, can realize accurate regulation and control pyrolytic reaction temperature and catalysis temperature effectively, has shortened reaction time greatly, has improved the treatment effeciency.
(3) The utility model discloses equipment can be miniaturized, on-vehicle, and the characteristics that especially adapted our country straw raw materials resource is abundant and dispersed form promotes in national vast rural area or cities and towns, forms the technical mode of "distributed primary refining-centralized upgrading".
(4) The utility model designs a lifting type spiral stirrer on the basis of direct wave-absorbing heating, and can achieve the effects of uniform heating and rapid temperature rise of materials by reciprocating stirring and upper and lower ejector rods during working; and the heat loss is reduced, the bottleneck of uneven heating of materials is broken through, and the pyrolysis efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the internal structure of the microwave pyrolysis furnace (without a microwave generator).
Fig. 3 is a schematic view of the interior of the microwave pyrolysis furnace according to the present invention.
Fig. 4 is a flow chart of the present invention.
Illustration of the drawings: the method comprises the following steps of 1-a movable trailer, 2-a material storage barrel, 3-a microwave high-temperature pyrolysis furnace, 301-a heptahedron microwave reaction furnace body, 302-a microwave absorbent bed layer, 303-a stirrer, 304-a conical plate, 305-a microwave generator, 4-a catalytic pipeline, 5-a condensing tower, 6-a liquid storage tank, 7-a gas washing tank, 8-a drying tank, 9-a fuel gas recovery power generation assembly, 10-a main control console, 11-a spiral feeder, 12-a spiral discharger, 13-a slag storage tank and 14-a catalyst bed layer.
A-pyrolysis gas outlet, B-solid residue outlet and C-feeding port.
In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, integrally connected; can be mechanical connection and electrical connection; may be directly connected, indirectly connected through intervening agents, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood to be specific to those skilled in the art.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to fig. 3, the mobile device for fast pyrolysis and poly-generation with microwave assistance for agricultural and forestry straw comprises a mobile trailer 1, and a main control console 10, which is installed on the mobile trailer 1 and is connected with a continuous spiral feeding and discharging system, a microwave reaction system, a microwave catalytic reforming system, a separation and recovery system and a main control system in sequence. The mobile trailer is provided with a power generator system, and has the characteristics of mobility and light weight; the continuous spiral feeding and discharging system is used for storing and continuously feeding; the microwave reaction system is used for performing microwave pyrolysis on the straws to obtain solid residues and gas; the microwave catalytic reforming system is used for catalytically reforming the pyrolysis gas, and can realize accurate and effective regulation of pyrolysis reaction temperature and catalytic temperature by using a novel catalyst coupling microwave series connection rapid pyrolysis catalytic technology; the separation and recovery system is used for carrying out gas-liquid separation on the pyrolysis gas and recovering and recycling the gas; the console 10 is used for performing coordinated control on each part of the system.
The continuous spiral feeding and discharging system comprises a storage cylinder 2 and a spiral feeder 11, wherein the storage cylinder 2 is used for storing and storing pretreated (crushed, dried and the like) straw particles; the inlet of the screw feeder 11 is communicated with the bottom of the storage barrel 2 and is used for continuously feeding the straws into a subsequent reaction system.
The microwave reaction system comprises a microwave high-temperature pyrolysis furnace 3, a feed inlet C is formed in the top of the microwave high-temperature pyrolysis furnace 3, the feed inlet C is communicated with an outlet of the spiral feeder 11, and an inductor is arranged at the feed inlet C; a solid residue discharge port B is formed in the tail end of the bottom of the microwave high-temperature pyrolysis furnace 3 and communicated with a spiral discharging device 12, and the tail end of the spiral discharging device 12 is connected with a slag storage tank 13; the side wall of the lower part of the microwave high-temperature pyrolysis furnace 3 is provided with a pyrolysis gas outlet A.
As shown in fig. 2 and 3, the microwave high-temperature pyrolysis furnace 3 includes a heptahedron microwave reaction furnace body 301, a microwave absorbent bed layer 302 arranged in the heptahedron microwave reaction furnace body 301, and a stirrer 303 suspended in the heptahedron microwave reaction furnace body 301, the end of the heptahedron microwave reaction furnace body 301 is a conical plate 304 for discharging materials, the side of the conical plate 304 is connected with the inner wall of the heptahedron microwave reaction furnace body 301, the conical plate 304 is provided with a plurality of conical holes therethrough, and each surface of the heptahedron microwave reaction furnace body 301 is provided with a plurality of sets of microwave generators 305.
The heptahedral design of the microwave high-temperature pyrolysis furnace 3 can reduce the mutual interference and consumption of the combination of multiple microwave sources; the outer part of the heptahedron microwave reaction furnace body 301 is insulated by adopting a special light microwave fiber module and cellucotton, a ceramic liner is arranged in the furnace, and the ceramic liner adopts a specially-made wave-transparent ceramic material, so that electromagnetic waves radiated by the microwave generator 305 can be absorbed by straws and a microwave absorbent in the heptahedron microwave reaction furnace body 301;
the absorbent of the microwave absorbent bed layer 302 is spherical silicon carbide, in the specific working process, the spherical silicon carbide and the straw particles are mixed together under the action of the stirrer 303, the stirring speed of the stirrer 303 is low, the strength of the spherical silicon carbide particles is high, the spherical silicon carbide particles cannot be crushed in the stirring process, and the volume of the silicon carbide particle balls is far larger than that of the taper holes and cannot be discharged along with solid residues;
the stirrer 303 adopts a lifting type spiral stirrer, and the lifting type spiral stirrer drives the silicon carbide balls and the straw raw material to be lifted and stirred from top to bottom when working so as to increase the contact area of the materials and the absorbent and achieve the purposes of uniform heating and rapid temperature rise;
the stirrer 303 is used for enhancing the direct and indirect heating efficiency of microwaves on straw particles through mechanical stirring, stirring the straw particles and spherical silicon carbide to be mixed and continuously move in a microwave heating section for carrying out a pyrolysis process, discharging solid residues through a taper hole at the bottom under the condition that the flow rate of the whole material is stirred repeatedly by proper power, and transferring the solid residues to a sealed slag storage tank 8 through a spiral discharging device 12, wherein the whole process flow can realize continuous production, and the whole process is not contacted with air;
the microwave source in the microwave high-temperature pyrolysis furnace 3 is derived from a plurality of groups of microwave generators 305 uniformly distributed on the heptahedron microwave reaction furnace body 301, in the embodiment, the microwave source comprises 21 sets of microwave generators 305 which are 3 multiplied by 7, the microwave generators 305 adopt water-cooled magnetrons with the frequency of 1.5kw and 2450MHz, high-voltage transformers and filament transformers with corresponding quantity, and a half-wave rectification microwave source is adopted, so that microwave energy is uniformly fed from the side surface of a polyhedral microwave cavity of the heptahedron microwave reaction furnace body; each path of microwave source is respectively connected to the microwave cavity through a standard waveguide (water-cooling) transmission system so as to ensure the stable work of the microwave source. The microwave input end is isolated by adopting a ceramic sealing sheet. Each microwave source can be independently adjusted to form group control, and different microwave powers can be continuously adjusted by a master control system to a multi-parameter PLC closed-loop feedback control system such as a temperature measuring sensor, so that different requirements of the system on temperature can be met; the inside of the furnace chamber of the microwave high-temperature pyrolysis furnace 3 adopts a K-shaped armored thermocouple sensor to carry out temperature multipoint measurement, and after the straws are quickly heated to a set target temperature through self wave-absorbing heating and microwave absorbent auxiliary heating, the microwave generator 305 is turned off.
The microwave catalytic reforming system includes a catalytic conduit 4 and a catalyst bed 14 communicating the pyrolysis gas exhaust port a with the separation recovery system. The catalyst bed layer 14 is filled with a high-dielectric ceramic foam catalyst which has high porosity, large specific surface area, thermal shock resistance, high temperature resistance, chemical corrosion resistance, good mechanical strength and good filtering and adsorbing properties, so that reactants can be quickly heated to a target temperature, the reaction time is greatly shortened, and the internal catalysis temperature is set to 350 ℃; the catalytic pipeline 4 and the catalyst bed layer 14 are also insulated externally by adopting special light microwave fiber modules and cellucotton.
The separation and recovery system comprises a condensing tower 5, a liquid storage tank 6, a gas washing tank 7, a drying tank 8 and a fuel gas recovery and power generation assembly 9 which are connected in sequence; the condensing towers 5 of a plurality of stages are distributed in parallel, the liquid storage tank 6 is communicated with the tail ends of the condensing towers 5, the air inlet of the gas washing tank 7 is communicated with the air outlets of the liquid storage tank 6 and the condensing towers 5, and the drying tank 8 is communicated with the air outlet of the gas washing tank 7;
the catalytic pyrolysis gas passes through the condensing tower 6 from the gasified oil gas outlet at the tail end of the microwave cavity, the high-temperature gas mixture is fully contacted with a coolant (tap water), after heat transfer, the gas with high condensing temperature is liquefied into pyroligneous liquor stock solution, the liquid condensed by the condensing tower 5 flows into the liquid storage tank 6 for storage, the rest non-condensable pyrolysis gas is purified by the washing tank 7 and dried by the drying tank 8 and then enters the gas recovery power generation assembly 9 under the action of the Roots blower to generate power and self-heat, partial energy is provided for the whole device, and the circulation of partial energy is realized.
The gas passing through the cooling tower 5 is introduced into the gas washing tank 7, and the sodium hydroxide and carbon, nitrogen and sulfur-containing gases such as carbon dioxide, nitrogen oxide and sulfur dioxide are used for chemical reaction, so that partial sulfur and nitrogen-containing oxide gases can be removed, and the gas product is further purified, thereby achieving the purpose of purification.
The gas after being cleaned by the washing gas passes through the drying tank 8 (the drying agent is filled in the drying tank), the gas after passing through the cooling tower 6 and the washing gas tank 7 can carry a large amount of moisture, and the moisture is removed by utilizing the property that the drying agent in the drying tank 8 has the absorption effect on the moisture but does not react with the gas, so that the quality of the gas is prevented from being reduced, and the further utilization of the gas is prevented from being influenced.
In specific implementation, the storage cylinder 2, the slag storage tank 13 and the liquid storage tank 6 are visualized, and collection ports for gas, liquid and solid samples in pyrolysis products are configured.
In specific implementation, control valves are arranged among the systems and used for controlling the communication and the closing of the units; meanwhile, the separation and recovery system is also provided with a power device for pumping gas, such as a Roots blower and the like, for guiding and accelerating the flow direction of the gas, the whole system keeps a relatively closed negative pressure state through the Roots blower, the working pressure is controlled to be-0.010 to-0.020 Mpa, and air is strictly prohibited from entering the system.
The utility model provides a range, mounted position etc. of each system can adjust by oneself as required for its compactness, rationally install on portable trailer 1.
The device of the utility model needs to pretreat the straws before operation, crush and dry the rice straw raw material, and control the water content below 15%; the on-off, parameter setting and the like of each system are linked with the main control console 10, in addition, the working parameters of each subsystem can be adjusted to required values through the main control console 10 according to needs, and the working period of the system is set after the system is stable.
As shown in fig. 4, the implementation process of the device of the present invention is as follows:
(1) filling the pretreated straw materials into a storage barrel 2, controlling the conveying speed by a driving motor, conveying the straw materials to a feed inlet C through a spiral feeder 11, opening a valve when a sensor of the feed inlet C senses that the materials are filled, guiding the straw materials to be fed into a heptahedron microwave reaction furnace body 301 by using a rod body of a stirrer 303, and displaying the feeding speed and the time of the materials passing through the reactor on a touch screen in front of a main control console 10;
(2) the straw materials are subjected to microwave pyrolysis reaction in a heptahedron microwave reaction furnace body 301, microwave energy is uniformly fed into a microwave generator 305 from the side surface of a multi-surface microwave cavity, the set temperature of a microwave high-temperature pyrolysis furnace 3 during straw treatment is 550 ℃, the treatment capacity of the materials is 1000kg/d, gasification pyrolysis reaction is carried out under the action of a microwave absorbent bed layer 302 (a first-stage fixed bed layer), a lifting spiral stirrer 303 provides power through a motor, and straw particles and spherical silicon carbide of the microwave absorbent bed layer 302 are stirred to be mixed and continuously move in a microwave heating section to carry out a first gasification process;
(3) after the first gasification and pyrolysis is finished, the straw material is decomposed into solid residue (biochar) and gas, wherein the solid residue is discharged from a solid residue discharge port B through a taper hole at the bottom of the reaction furnace chamber by gravity, and sequentially enters a spiral discharger 12 and a residue storage tank 13, and the biochar generated by pyrolyzing the rice straw accounts for 30%;
the straw is gasified on the surface layer of the microwave absorbent, gas formed by pyrolysis firstly freely drifts upwards, moves downwards under the action of air exhaust negative pressure, then passes through the integrated bed layer, passes through the microwave absorbent bed layer (namely a pyrolysis gasification bed layer) again, is discharged through a pyrolysis gas outlet A, sequentially enters the catalytic pipeline 4, and is catalytically reformed through a catalyst bed layer 14 (a second-stage fixed bed layer, the catalytic temperature is 350 ℃) of the high-dielectric foamed ceramic catalyst to form gasified oil gas;
(4) gasified oil gas formed after catalytic reforming is divided into a condensable part and a non-condensable part, after the gasified oil gas enters each stage of condensing tower 5, wood tar and wood vinegar stock solution which account for 40 percent in total are respectively obtained through fractional condensation, and condensate of the condensable part enters a liquid storage tank 6 below; the noncondensable part is through 7 edulcorations of gas washing tank, 8 drying tanks in proper order, and the electricity generation subassembly 9 is retrieved through spontaneous combustion gas to the effect at roots's fan at last and is generated electricity, and the electricity generation supplies whole device work, and 1 transportation energy resource consumption of portable trailer supplements, reaches the energy maximize and utilizes, realizes the circulation of the energy, and the pyrolysis rice straw gained pyrolysis gas accounts for 30% approximately.
The device can pyrolyze the straws into 30 percent of gas, 40 percent of liquid and 30 percent of solid, wherein the gas is basically micromolecule substances (hydrogen, carbon monoxide and methane) and a small amount of short carbon chain hydrocarbon, and the purified power generation and pyrolysis equipment can be used by the device, thereby realizing the cyclic utilization of energy and forming the outdoor self-heating biomass fast pyrolysis technology; the liquid is wood tar and wood vinegar, the wood tar is an excellent polyol substitute of hard polyurethane foam, and can be used as a raw material for producing paint; the wood vinegar contains various organic acids, phenols and the like, is a good promoter for plant growth, is a good additive for organic fertilizer production, can be used as an ideal substitute for agricultural chemicals, can also be comprehensively acted with various substances to increase the number of soil microorganisms, provides a proper soil condition for crop growth, and effectively inhibits the propagation of microorganisms which hinder the plant growth; the solid can be processed into carbon-based bio-fertilizer, and has the effects of carbon fixation, emission reduction, adsorption of heavy metals and organic pollutants in soil and the like.
Furthermore, the utility model discloses can realize the clean utilization of the living beings of straw in the open air, the heating is even, it is quick green to heat up, high efficiency, pollution-free, the energy saving, can the decentralized processing straw, the centralized processing result, effectively reduce receipts, fortune, the storage cost, improve resource utilization, the characteristics that the specially adapted straw resource is abundant and dispersed are popularized in the vast rural area of the whole country, thereby realize distributed straw resource and utilize on the spot, reduce burning on the spot of straw or direct natural rotting into fertilizer, improve agriculture and forestry resource utilization efficiency, promote to develop the cyclic agriculture.
The foregoing merely illustrates preferred embodiments of the present invention, which are described in considerable detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. Portable agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation's device, its characterized in that: the device comprises a movable trailer (1), and a continuous spiral feeding and discharging system, a microwave reaction system, a microwave catalytic reforming system, a separation and recovery system and a main control console (10) which is used as a main control system, which are arranged on the movable trailer (1) and are connected in sequence; wherein,
the continuous spiral feeding and discharging system comprises a storage barrel (2) and a spiral feeder (11), wherein an inlet of the spiral feeder (11) is communicated with the bottom of the storage barrel (2);
the microwave reaction system comprises a microwave high-temperature pyrolysis furnace (3), a feed inlet C is formed in the top of the microwave high-temperature pyrolysis furnace (3), and the feed inlet C is communicated with an outlet of the spiral feeder (11); a solid residue discharge port B is formed in the tail end of the bottom of the microwave high-temperature pyrolysis furnace (3), the solid residue discharge port B is communicated with a spiral discharging device (12), and the tail end of the spiral discharging device (12) is connected with a slag storage tank (13); a pyrolysis gas outlet A is formed in the side wall of the lower part of the microwave high-temperature pyrolysis furnace (3);
the microwave high-temperature pyrolysis furnace (3) comprises a heptahedron microwave reaction furnace body (301), a microwave absorbent bed layer (302) arranged in the heptahedron microwave reaction furnace body (301), and a stirrer (303) installed in the heptahedron microwave reaction furnace body (301) in a hanging manner, wherein a discharge conical plate (304) is arranged at the tail end of the heptahedron microwave reaction furnace body (301), the side of the conical plate (304) is connected with the inner wall of the heptahedron microwave reaction furnace body (301), a plurality of through conical holes are formed in the conical plate (304), and a plurality of groups of microwave generators (305) are installed on each surface of the heptahedron microwave reaction furnace body (301);
the microwave catalytic reforming system comprises a catalytic pipeline (4) and a catalyst bed layer (14), wherein the pyrolysis gas outlet A is communicated with the separation and recovery system;
the separation and recovery system comprises a condensing tower (5), a liquid storage tank (6), a gas washing tank (7), a drying tank (8) and a fuel gas recovery and power generation assembly (9) which are connected in sequence; a plurality of levels condensing tower (5) distribute side by side, liquid storage pot (6) with condensing tower (5) end intercommunication, wash gas jar (7) air inlet with liquid storage pot (6) the two gas vents intercommunication of condensing tower (5), desiccator (8) with the gas outlet intercommunication of wash gas jar (7), the warp liquid inflow that condensing tower (5) condensation becomes store in liquid storage pot (6), the pyrolysis gas process of all the other non-condensables wash gas jar (7) purify after desiccator (8) the entering generate electricity in gas recovery power generation subassembly (9) self-heating.
2. The mobile agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device of claim 1, wherein: the microwave generator (305) adopts a half-wave rectification microwave source, and microwave energy is uniformly fed from the side surface of the polygonal microwave cavity of the heptahedron microwave reaction furnace body (301).
3. The mobile agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device of claim 1, wherein: the stirrer (303) adopts a lifting type spiral stirrer.
4. The mobile agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device of claim 1, wherein: and an inductor is arranged at the feed inlet C.
5. The mobile agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device of claim 1, wherein: the outer part of the heptahedron microwave reaction furnace body (301) is insulated by adopting a fiber module and fiber cotton for light microwaves, and a ceramic inner container is arranged in the furnace and is made of wave-transparent ceramic materials.
6. The mobile agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device of claim 1, wherein: the absorbent of the microwave absorbent bed layer (302) adopts spherical silicon carbide.
7. The mobile agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device of claim 1, wherein: and a K-shaped armored thermocouple sensor is adopted in the cavity of the microwave high-temperature pyrolysis furnace (3) to carry out temperature multipoint measurement.
8. The mobile agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device of claim 1, wherein: the catalyst bed layer (14) is filled with a high dielectric ceramic foam catalyst; the catalytic pipeline (4) and the catalyst bed layer (14) are insulated by adopting a fiber module and cellucotton for light microwave.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112480950A (en) * | 2020-12-09 | 2021-03-12 | 南昌大学 | Movable agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device |
| GB2610191A (en) * | 2021-08-24 | 2023-03-01 | Univ Cranfield | Soild waste processing apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112480950A (en) * | 2020-12-09 | 2021-03-12 | 南昌大学 | Movable agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device |
| GB2610191A (en) * | 2021-08-24 | 2023-03-01 | Univ Cranfield | Soild waste processing apparatus |
| GB2610191B (en) * | 2021-08-24 | 2024-02-28 | Univ Cranfield | Soild waste processing apparatus |
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