WO2023134231A1 - Method for preparing carbon-reduced and carbon-negative products from agricultural and forestry residues - Google Patents
Method for preparing carbon-reduced and carbon-negative products from agricultural and forestry residues Download PDFInfo
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- WO2023134231A1 WO2023134231A1 PCT/CN2022/122967 CN2022122967W WO2023134231A1 WO 2023134231 A1 WO2023134231 A1 WO 2023134231A1 CN 2022122967 W CN2022122967 W CN 2022122967W WO 2023134231 A1 WO2023134231 A1 WO 2023134231A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- the invention relates to a method for preparing carbon-reducing and negative-carbon products by using agricultural and forestry wastes as raw materials, and belongs to the technical field of environmental protection.
- the invention provides a method for preparing carbon-reducing and negative-carbon products using agricultural and forestry waste as raw materials.
- a method for preparing carbon-reducing and negative-carbon products from agricultural and forestry wastes comprising the following steps:
- the land to be improved is desertified land, saline-alkali land, and heavy metal polluted land;
- the high-performance, high-yield plant fiber plants are eucalyptus, poplar, ramie, jute, green hemp, hemp, Any one or several of flax, apocynum, kenaf, kenaf, pennisetum and ryegrass are planted together.
- one or more of acid treatment, alkali treatment and heat treatment are used in combination.
- the low-carbon products obtained in S3 include biochar, composite materials of plant fiber materials and fully degradable materials, and bio-based fully degradable materials.
- the modification and activation treatment equipment used in the modification and activation operation includes a frame, a working chamber, a conveying roller table, a steam generating device, an atomizing head, a spraying head, an electric heating device, a return fan, and a chemical tank , a spray pump and a drive circuit
- the frame is a frame structure with a rectangular cross-section and the axis is parallel to the horizontal plane
- the working chamber and the conveying roller table are embedded in the frame and distributed parallel to the axis of the frame
- the The working chamber is a chamber structure with a rectangular cross section
- the two ends of the conveying roller table are located outside the working chamber and 50%-80% of the effective length of the conveying roller table is embedded in the working chamber
- the conveying roller table and the working chamber The distance between the bottoms is not less than 10 mm.
- atomizing heads embedded in the working chamber and connected to the bottom of the working chamber, and located below the conveying roller table, and the axis of each atomizing head is 30° to the lower end surface of the conveying roller table— The included angle is 90°, the atomizing heads are connected in parallel and communicate with the steam generating device, the spraying heads and electric heating devices are several, embedded in the working chamber and connected to the top of the working chamber, and the spraying heads and The axis of the electric heating device intersects with the upper end surface of the conveying roller table and forms an angle of 30°-90°.
- the sprinklers are connected in parallel and communicate with the spray pumps respectively through the guide tube, and the spray pump is connected with the spray pump through the guide tube
- the medicine tank is connected, and the upper end surface of the working chamber is provided with only one return port, and the return port is connected with the return fan through the guide pipe, and the return fan is also connected with the steam generating device.
- the steam generating device, the return fan, and the drug tank , spray pump and driving circuit are all connected to the outer surface of the frame, and the driving circuit is also electrically connected to the conveying roller table, steam generating device, electric heating device, return fan, chemical tank and spray pump.
- the electric heating device is any one of an electric heating wire and a far-infrared radiation heating device, and the electric heating devices are connected in parallel with each other and are spaced apart from the shower heads.
- the conveying roller table and the frame and the inner surface of the working chamber are all slidably connected through the lift drive mechanism, the axis of the lift drive mechanism is perpendicular to the axis of the frame, and the lift drive mechanism is electrically connected to the drive circuit.
- the lifting drive mechanism is any one of a hydraulic cylinder, a pneumatic cylinder, an electric telescopic rod, and a rack and pinion mechanism.
- the biochar preparation method is as follows: first, heat the activated plant fiber obtained in step S2 to 120°C-500°C in an oxygen-barrier environment, and continue heating for 20-60 minutes, and then shape it by a screw extruder , the biochar product can be obtained; the particle size of the modified and activated plant fiber obtained in the S2 step is all above 500 mesh;
- the preparation method of the composite material of plant fiber and fully degradable material is as follows: firstly, the activated plant fiber obtained in step S2 is blended with the fully degradable material, and then the blended material is added to the screw extrusion granulation The extrusion operation is carried out in the machine, and the screw extrusion granulator is equipped with multiple side feeders during the extrusion process, and auxiliary materials are added to the blend of activated plant fibers and fully degradable materials through the side feeders , and extruded through a screw extrusion granulator to obtain composite material granules of plant fibers and fully degradable materials.
- the preparation method of the bio-based fully degradable material is as follows: firstly, the activated plant fiber obtained in step S2 is added to the fermentation reactor for biological fermentation, and the fermented product is separated and purified, and finally the purified The product is extruded and granulated by a screw extrusion granulator to obtain a bio-based fully degradable material; the particle size of the activated plant fiber obtained in the S2 step is above 1000 mesh.
- Fig. 1 is a schematic flow sheet of the method of the present invention
- Fig. 2 is a schematic diagram of the modification and activation treatment equipment.
- a method for preparing carbon-reducing and negative-carbon products using agricultural and forestry waste as raw materials includes the following steps:
- step S2 fiber transformation, regular felling and recovery of economic vegetation cultivated in step S1, and then crushing and screening of recovered vegetation raw materials, and then modification and activation of plant fiber debris obtained after screening, to obtain Activated plant fibers;
- the land to be improved is desertified land, saline-alkali land, and heavy metal polluted land;
- the high-performance, high-yield plant fiber plants are eucalyptus, poplar, ramie, jute, green hemp, Any one or several of hemp, flax, apocynum, kenaf, kenaf, pennisetum and ryegrass are planted together.
- one or more of acid treatment, alkali treatment and heat treatment are used in common.
- the modification and activation treatment equipment used during the modification and activation operation includes a frame 1, a working chamber 2, a conveying roller table 3, a steam generating device 4, an atomizing head 5, a spray shower head 6, electric heating device 7, return fan 8, medicine tank 9, spray pump 10 and drive circuit 11,
- the frame 1 is a frame structure with a rectangular cross section and an axis parallel to the horizontal plane, the working chamber 2.
- the conveying roller table 3 is embedded in the frame 1 and distributed parallel to the axis of the frame 1.
- the working chamber 2 is a cavity structure with a rectangular cross section, and the two ends of the conveying roller table 3 are located outside the working chamber 2.
- 50%-80% of the effective length of the conveying roller table 3 is partially embedded in the working chamber 2, and the distance between the conveying roller table 3 and the bottom of the working chamber 2 is not less than 10 mm, and several atomizing heads 5 are embedded in the working chamber 2 and is connected to the bottom of the working chamber 2, and is located below the conveying roller table 3, and the axes of each atomizing head 5 and the lower end surface of the conveying roller table 3 form an included angle of 30°-90°, and the 5 atomizing heads are connected in parallel It communicates with the steam generating device 4, the shower head 6 and the electric heating device 7 are several, embedded in the working chamber 2 and connected to the top of the working chamber 2, and the axes of the shower head 6 and the electric heating device 7 are in line with the conveying The upper end surfaces of the roller table 3 intersect and form an angle of 30°-90°.
- the spray heads 6 are connected in parallel and communicate with the spray pumps 10 through the guide tube respectively.
- the spray pump 10 is connected to the chemical agent through the guide tube
- the tank 9 communicates, and the upper end surface of the working chamber 2 is provided with only a return port 12, and the return port 12 communicates with the return fan 8 through a guide tube, and the return fan 8 communicates with the steam generating device 4 in addition, and the steam generating device 4.
- the return fan 8, the medicine tank 9, the spray pump 10 and the drive circuit 11 are all connected to the outer surface of the frame 1, and the drive circuit 10 is also connected to the conveying roller table 3, the steam generating device 4, the electric heating device 7, and the return fan 8.
- the chemical tank 9 and the spray pump 10 are electrically connected.
- the electric heating device 7 is any one of an electric heating wire and a far-infrared radiation heating device, and the electric heating devices 7 are connected in parallel with each other and are spaced apart from the shower heads 6 .
- the conveying roller table 3 is slidably connected to the inner surface of the frame 1 and the working chamber 2 through the lifting drive mechanism 13, the axis of the lifting drive mechanism 13 is perpendicular to the axis of the frame 1, and the
- the lifting driving mechanism 13 is electrically connected with the driving circuit 11, and the lifting driving mechanism 13 is any one of a hydraulic cylinder, a pneumatic cylinder, an electric telescopic rod, and a rack and pinion mechanism.
- the low-carbon products obtained in S3 are three types of products: biochar, composite materials of plant fiber materials and fully degradable materials, and bio-based fully degradable materials.
- biochar preparation method is as follows: first, heat the activated plant fiber obtained in step S2 to 120°C-500°C in an oxygen-barrier environment, and continue heating for 20-60 minutes, and then process it through a screw extruder.
- the biochar product can be obtained by molding; wherein the particle size of the modified and activated plant fiber obtained in the S2 step is all above 500 mesh;
- the heat source when heating in an oxygen-barrier environment, is any one of superheated steam and high-temperature nitrogen.
- the activated plant fiber obtained in step S2 is first blended with the fully degradable material, and then the blended material is added to the screw extrusion granulator During the extrusion process, the screw extrusion granulator is equipped with multiple side feeders, and auxiliary materials are added to the blend of activated plant fiber fully degradable materials through the side feeders. Extrusion molding is carried out through a screw extrusion granulator to obtain composite material granules of plant fibers and fully degradable materials.
- PLA polylactic acid
- PHA polyhydroxyalkanoate
- PBAT polybutylene adipate/terephthalate
- PCL polycaprolactone
- the composite product of plant fiber and fully degradable material uses relatively low-priced plant fiber to partially replace the fully degradable product, which greatly reduces the cost of raw materials. Compared with the fully degradable products currently on the market, the production cost is significantly reduced; Bio-based fully degradable materials and biochar products use plant fibers with lower prices and better performance as raw materials, which can effectively reduce production costs;
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Abstract
The present invention relates to a method for preparing carbon-reduced and carbon-negative products from agricultural and forestry residues. The method comprises a step of biological breeding transformation, a step of fibrosis transformation, a step of preparation of finished products, etc. By means of the present invention, the productivity and land value of polluted land, such as barren and decertified land and salinized land, can be effectively increased; the improvement of soil quality of polluted land, such as barren and decertified land and salinized land, can be facilitated; the mechanical properties and ductility of composites are further improved while enabling the composites to have good degradability; and compared with traditional fully degradable products, the energy consumption and costs for the production of the composites are greatly reduced, and biomass resources serve as one of main raw materials during a production process, such that the aim of realizing "carbon reduction" during the production and obtaining "carbon-negative" products is achieved.
Description
本发明涉及一种以农林废弃物为原料制备减碳负碳产品的方法，属于环保技术领域。The invention relates to a method for preparing carbon-reducing and negative-carbon products by using agricultural and forestry wastes as raw materials, and belongs to the technical field of environmental protection.
在“双碳”战略的指引下，我国各行各业都开展了节碳减排技术应用和负碳产品研发和创制工作。在材料制备和加工领域，如果不使用石油基原料，而使用来源于植物等生物质的原材料来制备出减碳/负碳材料，则可节省产品生产环节原料的碳排放；同时，如果所采用的生物质原料本身来自于沿海滩涂等非耕地种植产生的植物，则可为产品生产创造碳汇资源的同时进一步提高土地经济价值，并对土壤土质进行有效改良；此外，采用高效的加工与制备技术及装备，降低从原料到产品环节的能耗，则可进一步降低产品生产和加工环节的碳排放。Under the guidance of the "dual carbon" strategy, all walks of life in my country have carried out the application of carbon-saving and emission-reduction technologies and the research and development and creation of negative carbon products. In the field of material preparation and processing, if instead of using petroleum-based raw materials, carbon-reducing/negative-carbon materials are prepared from biomass-derived raw materials such as plants, the carbon emissions of raw materials in product production can be saved; at the same time, if the The biomass raw material itself comes from plants produced on non-cultivated land such as coastal beaches, which can create carbon sink resources for product production, further increase the economic value of the land, and effectively improve the soil quality; in addition, adopt efficient processing and preparation Technology and equipment, reducing energy consumption from raw materials to products, can further reduce carbon emissions in product production and processing.
目前，相关研究和试验主要集中在相关行业的负碳/低碳工艺开发和设计方面，针对终端负碳/低碳产品的研究极少，因此也缺少相应成熟的低碳/负碳产品开发、生产及制备工艺及装备。此外，当前使用的部分生物质原材料采用粮食，存在与民争粮、成本较高等问题，且其相关生产、加工和制造的工艺及设备存在能耗较高、碳排放量较大等问题，同时在关键利用环节的降本增效、高值化产品创制和应用以及全生产流程碳排放管控等方面还有明显的短板和提升空间。At present, relevant research and experiments are mainly focused on the development and design of carbon-negative/low-carbon processes in related industries, and there are very few studies on terminal negative-carbon/low-carbon products, so there is also a lack of mature low-carbon/carbon-negative product development, Production and preparation technology and equipment. In addition, some of the currently used biomass raw materials use grain, which has problems such as competition with the people for grain and high cost, and its related production, processing and manufacturing processes and equipment have problems such as high energy consumption and large carbon emissions. There are still obvious shortcomings and room for improvement in terms of cost reduction and efficiency increase in key utilization links, creation and application of high-value products, and carbon emission control of the entire production process.
针对上述问题，迫切地需要开发一种以低成本、来源广的农林废弃物为原料，通过先进加工工艺和设备制备出减碳/负碳产品的方法，以满足实际使用的需要和行业发展的需求。In view of the above problems, there is an urgent need to develop a method of using low-cost, wide-sourced agricultural and forestry waste as raw materials to prepare carbon-reducing/negative-carbon products through advanced processing technology and equipment, so as to meet the needs of actual use and the development of the industry. need.
发明内容Contents of the invention
为了解决现有技术上的瓶颈和不足，本发明提供了一种以农林废弃物为原 料制备减碳负碳产品的方法。In order to solve the bottlenecks and deficiencies in the prior art, the invention provides a method for preparing carbon-reducing and negative-carbon products using agricultural and forestry waste as raw materials.
一种以农林废弃物为原料制备减碳负碳产品的方法，包括如下步骤：A method for preparing carbon-reducing and negative-carbon products from agricultural and forestry wastes, comprising the following steps:
S1，生态培育改造，首先选取需改良土地，并在选取土地上种植培育能生产高性能、高产量植物纤维植株的固碳经济植被；S1, ecological cultivation and transformation, first select the land to be improved, and plant and cultivate carbon-fixing economic vegetation that can produce high-performance and high-yield plant fiber plants on the selected land;
S2，纤维化改造，对S1步骤培育的经济植被进行定期采伐回收，然后并对回收的植被原材料进行破碎、筛分作业，然后对经过筛分后得到植物纤维碎屑进行改性活化作业，得到活化植物纤维；S2, fiber transformation, regular felling and recovery of economic vegetation cultivated in step S1, and then crushing and screening of recovered vegetation raw materials, and then modification and activation of plant fiber debris obtained after screening, to obtain Activated plant fibers;
S3，制备产品成品，对S2步骤得到的活化植物纤维原料进行深度加工，分别得到低碳产品。S3, preparing the finished product, further processing the activated plant fiber raw material obtained in the step S2, and obtaining low-carbon products respectively.
进一步的，所述的S1步骤中，需改良土地为沙漠化土地、盐碱土地、重金属污染土地；所述高性能、高产量植物纤维植株为桉树、杨树、苎麻、黄麻、青麻、***、亚麻、罗布麻、红麻、槿麻、狼尾草和黑麦草中的任意一种或几种共同种植。Further, in the S1 step, the land to be improved is desertified land, saline-alkali land, and heavy metal polluted land; the high-performance, high-yield plant fiber plants are eucalyptus, poplar, ramie, jute, green hemp, hemp, Any one or several of flax, apocynum, kenaf, kenaf, pennisetum and ryegrass are planted together.
进一步的，所述S2步骤中改性活化作业时，采用酸处理、碱处理、热处理中的一种或几种共用。Further, during the modification and activation operation in the S2 step, one or more of acid treatment, alkali treatment and heat treatment are used in combination.
进一步的，所述的S3中得到的低碳产品为生物炭、植物纤维材料与全降解材料的复合材料、生物基全降解材料三类产品。Further, the low-carbon products obtained in S3 include biochar, composite materials of plant fiber materials and fully degradable materials, and bio-based fully degradable materials.
进一步的，所述的改性活化作业时用的改性活化处理设备包括机架、作业腔、输送辊道、蒸汽发生装置、雾化头、喷淋头、电加热装置、回流风机、药剂罐、喷淋泵及驱动电路，所述机架为横断面呈矩形且轴线与水平面平行分布的框架结构，所述作业腔、输送辊道均嵌于机架内并与机架轴线平行分布，所述作业腔为横断面呈矩形的腔体结构，所述输送辊道两端位于作业腔外且输送辊道有效长度的50％—80％部分嵌于作业腔内，且输送辊道与作业腔底部间间距 不小于10毫米，所述雾化头若干，嵌于作业腔内并与作业腔底部连接，并位于输送辊道下方，且各雾化头轴线与输送辊道下端面呈30°—90°夹角，所述雾化头间并联并与蒸汽发生装置连通，所述喷淋头和电加热装置均若干，嵌于作业腔内并于作业腔顶部连接，且所述喷淋头和电加热装置轴线与输送辊道上端面相交并呈30°—90°夹角，所述喷淋头间并联，并分别通过导流管喷淋泵连通，所述喷淋泵另通过导流管与药剂罐连通，所述作业腔上端面设只是一个回流口，且回流口通过导流管与回流风机连通，所述回流风机另与蒸汽发生装置连通，所述蒸汽发生装置、回流风机、药剂罐、喷淋泵及驱动电路均与机架外表面连接，且驱动电路另与输送辊道、蒸汽发生装置、电加热装置、回流风机、药剂罐及喷淋泵电气连接。Further, the modification and activation treatment equipment used in the modification and activation operation includes a frame, a working chamber, a conveying roller table, a steam generating device, an atomizing head, a spraying head, an electric heating device, a return fan, and a chemical tank , a spray pump and a drive circuit, the frame is a frame structure with a rectangular cross-section and the axis is parallel to the horizontal plane, the working chamber and the conveying roller table are embedded in the frame and distributed parallel to the axis of the frame, the The working chamber is a chamber structure with a rectangular cross section, the two ends of the conveying roller table are located outside the working chamber and 50%-80% of the effective length of the conveying roller table is embedded in the working chamber, and the conveying roller table and the working chamber The distance between the bottoms is not less than 10 mm. There are several atomizing heads embedded in the working chamber and connected to the bottom of the working chamber, and located below the conveying roller table, and the axis of each atomizing head is 30° to the lower end surface of the conveying roller table— The included angle is 90°, the atomizing heads are connected in parallel and communicate with the steam generating device, the spraying heads and electric heating devices are several, embedded in the working chamber and connected to the top of the working chamber, and the spraying heads and The axis of the electric heating device intersects with the upper end surface of the conveying roller table and forms an angle of 30°-90°. The sprinklers are connected in parallel and communicate with the spray pumps respectively through the guide tube, and the spray pump is connected with the spray pump through the guide tube The medicine tank is connected, and the upper end surface of the working chamber is provided with only one return port, and the return port is connected with the return fan through the guide pipe, and the return fan is also connected with the steam generating device. The steam generating device, the return fan, and the drug tank , spray pump and driving circuit are all connected to the outer surface of the frame, and the driving circuit is also electrically connected to the conveying roller table, steam generating device, electric heating device, return fan, chemical tank and spray pump.
进一步的，所述的电加热装置为电加热丝、远红外辐照加热装置中的任意一种，且各电加热装置间相互并联，并与喷淋头间间隔分布。Further, the electric heating device is any one of an electric heating wire and a far-infrared radiation heating device, and the electric heating devices are connected in parallel with each other and are spaced apart from the shower heads.
进一步的，所述的输送辊道与机架及作业腔内侧面间均通过升降驱动机构间滑动连接，所述升降驱动机构轴线与机架轴线垂直分布，且所述升降驱动机构与驱动电路电气连接，所述升降驱动机构为液压缸、气压缸、电动伸缩杆、齿轮齿条机构中的任意一种。Further, the conveying roller table and the frame and the inner surface of the working chamber are all slidably connected through the lift drive mechanism, the axis of the lift drive mechanism is perpendicular to the axis of the frame, and the lift drive mechanism is electrically connected to the drive circuit. connected, and the lifting drive mechanism is any one of a hydraulic cylinder, a pneumatic cylinder, an electric telescopic rod, and a rack and pinion mechanism.
进一步的，所述的生物炭制备方法为：首先对S2步骤得到的活化植物纤维在隔氧环境下加热至120℃—500℃，并持续加热20—60分钟，然后通过螺杆挤出机进行成型，即可得到生物炭产品；其中S2步骤得到的改性活化植物纤维粒径均为500目以上；Further, the biochar preparation method is as follows: first, heat the activated plant fiber obtained in step S2 to 120°C-500°C in an oxygen-barrier environment, and continue heating for 20-60 minutes, and then shape it by a screw extruder , the biochar product can be obtained; the particle size of the modified and activated plant fiber obtained in the S2 step is all above 500 mesh;
进一步的，所述的植物纤维与全降解材料的复合材料制备方法为：首先对S2步骤得到的活化植物纤维与全降解材料进行共混，然后将共混后的物料添加到螺杆挤出造粒机中进行挤出作业，并在挤出过程中另为螺杆挤出造粒机配备 多台侧喂料机，通过侧喂料机向活化植物纤维与全降解材料的共混料中添加辅助料，并通过螺杆挤出造粒机进行挤出成型，得到植物纤维与全降解材料的复合材料颗粒。Further, the preparation method of the composite material of plant fiber and fully degradable material is as follows: firstly, the activated plant fiber obtained in step S2 is blended with the fully degradable material, and then the blended material is added to the screw extrusion granulation The extrusion operation is carried out in the machine, and the screw extrusion granulator is equipped with multiple side feeders during the extrusion process, and auxiliary materials are added to the blend of activated plant fibers and fully degradable materials through the side feeders , and extruded through a screw extrusion granulator to obtain composite material granules of plant fibers and fully degradable materials.
进一步的，所述的生物基全降解材料制备方法为，首先将S2步骤得到的活化植物纤维添加到发酵反应釜中进行生物发酵，并对发酵后的产物进行分离和提纯作业，最后对提纯后的产物通过螺杆挤出造粒机进行挤出造粒作业，即可得到生物基全降解材料；其中S2步骤得到的活化植物纤维粒径为1000目以上。Further, the preparation method of the bio-based fully degradable material is as follows: firstly, the activated plant fiber obtained in step S2 is added to the fermentation reactor for biological fermentation, and the fermented product is separated and purified, and finally the purified The product is extruded and granulated by a screw extrusion granulator to obtain a bio-based fully degradable material; the particle size of the activated plant fiber obtained in the S2 step is above 1000 mesh.
本发明具有以下优势：The present invention has the following advantages:
(1)在贫瘠沙漠化和盐碱化等污染性土地上引入高性能、高产量植株，实现土壤环境治理和植物高效固碳，并产出高性能植物纤维，可有效提高贫瘠沙漠化和盐碱化等污染性土地的产能和土地价值，同时有助于对贫瘠沙漠化和盐碱化等污染性土地土壤土质改良；(1) Introduce high-performance and high-yield plants on polluted lands such as barren desertification and salinization to achieve soil environmental governance and efficient plant carbon sequestration, and produce high-performance plant fibers, which can effectively improve barren desertification and salinization The production capacity and land value of polluted land, and at the same time help to improve the soil quality of polluted land such as barren desertification and salinization;
(2)植物纤维与全降解材料的复合材料的性能和质量满足国家相关标准，由于长纤维的加入，使材料的力学性能和延展性能得到了进一步的提升；生物基全降解材料和生物炭采用生物质资源制成，与传统的化石能源制备工艺路线相比实现节能降耗、降本增效；(2) The performance and quality of the composite material of plant fiber and fully degradable material meet the relevant national standards. Due to the addition of long fibers, the mechanical properties and ductility of the material have been further improved; bio-based fully degradable materials and biochar are used Made of biomass resources, compared with the traditional fossil energy preparation process, it can save energy, reduce consumption, reduce cost and increase efficiency;
(3)植物纤维与全降解材料的复合材料产品采用价格相对较低的植物纤维部分替代全降解材料，极大降低了原材料成本，与市场现售全降解制品相比，生产成本端降低明显；生物基全降解材料和生物炭产品采用价格更低、性能更优的植物纤维作为原料，可以有效降低生产成本；(3) The composite product of plant fiber and fully degradable material uses relatively low-priced plant fiber to partially replace the fully degradable material, which greatly reduces the cost of raw materials. Compared with fully degradable products currently on the market, the production cost is significantly reduced; Bio-based fully degradable materials and biochar products use plant fibers with lower prices and better performance as raw materials, which can effectively reduce production costs;
(4)本项目生产过程所采用的生物质资源，可以实现产业“减碳”并生产“负碳”产品，助力国家“双碳”目标的实现。(4) The biomass resources used in the production process of this project can realize the "carbon reduction" of the industry and the production of "negative carbon" products, helping the realization of the national "double carbon" goal.
下面结合附图和具体实施方式来详细说明本发明；The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment;
图1为本发明方法流程示意图；Fig. 1 is a schematic flow sheet of the method of the present invention;
图2为改性活化处理设备结构示意图。Fig. 2 is a schematic diagram of the modification and activation treatment equipment.
为使本发明实现的技术手段、创作特征、达成目的与功效易于施工，下面结合具体实施方式，进一步阐述本发明。In order to facilitate the implementation of the technical means, creative features, goals and effects achieved by the present invention, the present invention will be further elaborated below in conjunction with specific embodiments.
如图1所示，一种以农林废弃物为原料制备减碳负碳产品的方法，包括如下步骤：As shown in Figure 1, a method for preparing carbon-reducing and negative-carbon products using agricultural and forestry waste as raw materials includes the following steps:
S1，生态培育改造，首先选取需改良土地，并在选取土地上种植培育能生产高性能、高产量植物纤维植株的固碳经济植被；S1, ecological cultivation and transformation, first select the land to be improved, and plant and cultivate carbon-fixing economic vegetation that can produce high-performance and high-yield plant fiber plants on the selected land;
S2，纤维化改造，对S1步骤培育的经济植被进行定期采伐回收，然后并对回收的植被原材料进行破碎、筛分作业，然后对经过筛分后得到植物纤维碎屑进行改性活化作业，得到活化植物纤维；S2, fiber transformation, regular felling and recovery of economic vegetation cultivated in step S1, and then crushing and screening of recovered vegetation raw materials, and then modification and activation of plant fiber debris obtained after screening, to obtain Activated plant fibers;
S3，制备产品成品，对S2步骤得到的活化植物纤维原料进行深度加工，分别得到低碳产品。S3, preparing the finished product, further processing the activated plant fiber raw material obtained in the step S2, and obtaining low-carbon products respectively.
本实施例中，所述的S1步骤中，需改良土地为沙漠化土地、盐碱土地、重金属污染土地；所述高性能、高产量植物纤维植株为桉树、杨树、苎麻、黄麻、青麻、***、亚麻、罗布麻、红麻、槿麻、狼尾草和黑麦草中的任意一种或几种共同种植。In this embodiment, in the S1 step, the land to be improved is desertified land, saline-alkali land, and heavy metal polluted land; the high-performance, high-yield plant fiber plants are eucalyptus, poplar, ramie, jute, green hemp, Any one or several of hemp, flax, apocynum, kenaf, kenaf, pennisetum and ryegrass are planted together.
同时，所述S2步骤中改性活化作业时，采用酸处理、碱处理、热处理中的一种或几种共用。At the same time, during the modification and activation operation in the S2 step, one or more of acid treatment, alkali treatment and heat treatment are used in common.
特别说明的，如图2所示，所述的改性活化作业时用的改性活化处理设备包括机架1、作业腔2、输送辊道3、蒸汽发生装置4、雾化头5、喷淋头6、电 加热装置7、回流风机8、药剂罐9、喷淋泵10及驱动电路11，所述机架1为横断面呈矩形且轴线与水平面平行分布的框架结构，所述作业腔2、输送辊道3均嵌于机架1内并与机架1轴线平行分布，所述作业腔2为横断面呈矩形的腔体结构，所述输送辊道3两端位于作业腔2外且输送辊道3有效长度的50％—80％部分嵌于作业腔2内，且输送辊道3与作业腔2底部间间距不小于10毫米，所述雾化头5若干，嵌于作业腔2内并与作业腔2底部连接，并位于输送辊道3下方，且各雾化头5轴线与输送辊道3下端面呈30°—90°夹角，所述雾化头5间并联并与蒸汽发生装置4连通，所述喷淋头6和电加热装置7均若干，嵌于作业腔2内并于作业腔2顶部连接，且所述喷淋头6和电加热装置7轴线与输送辊道3上端面相交并呈30°—90°夹角，所述喷淋头6间并联，并分别通过导流管喷淋泵10连通，所述喷淋泵10另通过导流管与药剂罐9连通，所述作业腔2上端面设只是一个回流口12，且回流口12通过导流管与回流风机8连通，所述回流风机8另与蒸汽发生装置4连通，所述蒸汽发生装置4、回流风机8、药剂罐9、喷淋泵10及驱动电路11均与机架1外表面连接，且驱动电路10另与输送辊道3、蒸汽发生装置4、电加热装置7、回流风机8、药剂罐9及喷淋泵10电气连接。Specifically, as shown in Figure 2, the modification and activation treatment equipment used during the modification and activation operation includes a frame 1, a working chamber 2, a conveying roller table 3, a steam generating device 4, an atomizing head 5, a spray Shower head 6, electric heating device 7, return fan 8, medicine tank 9, spray pump 10 and drive circuit 11, the frame 1 is a frame structure with a rectangular cross section and an axis parallel to the horizontal plane, the working chamber 2. The conveying roller table 3 is embedded in the frame 1 and distributed parallel to the axis of the frame 1. The working chamber 2 is a cavity structure with a rectangular cross section, and the two ends of the conveying roller table 3 are located outside the working chamber 2. In addition, 50%-80% of the effective length of the conveying roller table 3 is partially embedded in the working chamber 2, and the distance between the conveying roller table 3 and the bottom of the working chamber 2 is not less than 10 mm, and several atomizing heads 5 are embedded in the working chamber 2 and is connected to the bottom of the working chamber 2, and is located below the conveying roller table 3, and the axes of each atomizing head 5 and the lower end surface of the conveying roller table 3 form an included angle of 30°-90°, and the 5 atomizing heads are connected in parallel It communicates with the steam generating device 4, the shower head 6 and the electric heating device 7 are several, embedded in the working chamber 2 and connected to the top of the working chamber 2, and the axes of the shower head 6 and the electric heating device 7 are in line with the conveying The upper end surfaces of the roller table 3 intersect and form an angle of 30°-90°. The spray heads 6 are connected in parallel and communicate with the spray pumps 10 through the guide tube respectively. The spray pump 10 is connected to the chemical agent through the guide tube The tank 9 communicates, and the upper end surface of the working chamber 2 is provided with only a return port 12, and the return port 12 communicates with the return fan 8 through a guide tube, and the return fan 8 communicates with the steam generating device 4 in addition, and the steam generating device 4. The return fan 8, the medicine tank 9, the spray pump 10 and the drive circuit 11 are all connected to the outer surface of the frame 1, and the drive circuit 10 is also connected to the conveying roller table 3, the steam generating device 4, the electric heating device 7, and the return fan 8. The chemical tank 9 and the spray pump 10 are electrically connected.
进一步优化的，所述的电加热装置7为电加热丝、远红外辐照加热装置中的任意一种，且各电加热装置7间相互并联，并与喷淋头6间间隔分布。Further optimized, the electric heating device 7 is any one of an electric heating wire and a far-infrared radiation heating device, and the electric heating devices 7 are connected in parallel with each other and are spaced apart from the shower heads 6 .
与此同时，所述的输送辊道3与机架1及作业腔2内侧面间均通过升降驱动机构13间滑动连接，所述升降驱动机构13轴线与机架1轴线垂直分布，且所述升降驱动机构13与驱动电路11电气连接，所述升降驱动机构13为液压缸、气压缸、电动伸缩杆、齿轮齿条机构中的任意一种。At the same time, the conveying roller table 3 is slidably connected to the inner surface of the frame 1 and the working chamber 2 through the lifting drive mechanism 13, the axis of the lifting drive mechanism 13 is perpendicular to the axis of the frame 1, and the The lifting driving mechanism 13 is electrically connected with the driving circuit 11, and the lifting driving mechanism 13 is any one of a hydraulic cylinder, a pneumatic cylinder, an electric telescopic rod, and a rack and pinion mechanism.
本实施例中，所述的S3中得到的低碳产品为生物炭、植物纤维材料与全降 解材料的复合材料、生物基全降解材料三类产品。In this embodiment, the low-carbon products obtained in S3 are three types of products: biochar, composite materials of plant fiber materials and fully degradable materials, and bio-based fully degradable materials.
进一步说明的，所述的生物炭制备方法为：首先对S2步骤得到的活化植物纤维在隔氧环境下加热至120℃—500℃，并持续加热20—60分钟，然后通过螺杆挤出机进行成型，即可得到生物炭产品；其中S2步骤得到的改性活化植物纤维粒径均为500目以上；To further illustrate, the biochar preparation method is as follows: first, heat the activated plant fiber obtained in step S2 to 120°C-500°C in an oxygen-barrier environment, and continue heating for 20-60 minutes, and then process it through a screw extruder. The biochar product can be obtained by molding; wherein the particle size of the modified and activated plant fiber obtained in the S2 step is all above 500 mesh;
其中在隔氧环境下加热时，热源为过热蒸汽及高温氮气中的任意一种。Wherein, when heating in an oxygen-barrier environment, the heat source is any one of superheated steam and high-temperature nitrogen.
进一步说明的，所述的植物纤维与全降解材料的复合材料时，首先对S2步骤得到的活化植物纤维与全降解材料进行共混，然后将共混后的物料添加到螺杆挤出造粒机中进行挤出作业，并在挤出过程中，另为螺杆挤出造粒机配备多台侧喂料机，通过侧喂料机向活化植物纤维全降解材料的共混料中添加辅助料，并通过螺杆挤出造粒机进行挤出成型，得到植物纤维与全降解材料的复合材料颗粒。To further illustrate, when the composite material of the plant fiber and the fully degradable material is used, the activated plant fiber obtained in step S2 is first blended with the fully degradable material, and then the blended material is added to the screw extrusion granulator During the extrusion process, the screw extrusion granulator is equipped with multiple side feeders, and auxiliary materials are added to the blend of activated plant fiber fully degradable materials through the side feeders. Extrusion molding is carried out through a screw extrusion granulator to obtain composite material granules of plant fibers and fully degradable materials.
进一步说明的，所述的生物基全降解材料制备方法为，首先将S2步骤得到的活化植物纤维添加到发酵反应釜中进行生物发酵，并对发酵后的产物进行分离和提纯作业，其中发酵温度为25℃—50℃，最后对提纯后的产物通过螺杆挤出造粒机进行挤出造粒作业，即可得到生物基全降解材料；其中S2步骤得到的活化植物纤维粒径为1000目以上。To further illustrate, the preparation method of the bio-based fully degradable material is as follows: firstly, the activated plant fiber obtained in step S2 is added to the fermentation reactor for biological fermentation, and the fermented product is separated and purified, wherein the fermentation temperature is The temperature is 25°C-50°C, and finally the purified product is extruded and granulated by a screw extrusion granulator to obtain a bio-based fully degradable material; the particle size of the activated plant fiber obtained in the S2 step is above 1000 mesh .
其中所述使用的全降解材料为PLA(聚乳酸)、PHA(聚羟基烷酸酯)、PBAT(聚己二酸/对苯二甲酸丁二酯)、PCL(聚己内酯)中的任意一种。Wherein the fully degradable material used is PLA (polylactic acid), PHA (polyhydroxyalkanoate), PBAT (polybutylene adipate/terephthalate), PCL (polycaprolactone) A sort of.
本发明具有以下优势：The present invention has the following advantages:
(1)在贫瘠沙漠化和盐碱化等污染性土地上引入高性能、高产量植株，实现土壤环境治理和植物高效固碳，并产出高性能植物纤维，可有效的提高贫瘠沙漠化和盐碱化等污染性土地的产能和土地价值，同时有助于对贫瘠沙漠化和 盐碱化等污染性土地土壤土质改良；(1) Introduce high-performance and high-yield plants on polluted lands such as barren desertification and salinization to achieve soil environmental governance and efficient plant carbon sequestration, and produce high-performance plant fibers, which can effectively improve barren desertification and salinization The production capacity and land value of polluted land such as climate change, and at the same time help to improve the soil quality of polluted land such as barren desertification and salinization;
(2)植物纤维与全降解材料的复合材料的性能和质量满足国家相关标准，由于长纤维的加入，使材料的力学性能和延展性能得到了进一步的提升；生物基全降解材料和生物炭采用生物质资源制成，与传统的化石能源制备工艺路线相比实现节能降耗、降本增效；(2) The performance and quality of the composite material of plant fiber and fully degradable material meet the relevant national standards. Due to the addition of long fibers, the mechanical properties and ductility of the material have been further improved; bio-based fully degradable materials and biochar are used Made of biomass resources, compared with the traditional fossil energy preparation process, it can save energy, reduce consumption, reduce cost and increase efficiency;
(3)植物纤维与全降解材料的复合材料产品采用价格相对较低的植物纤维部分替代全降解产品，极大降低了原材料成本，与市场现售全降解制品相比，生产成本端降低明显；生物基全降解材料和生物炭产品采用价格更低、性能更优的植物纤维作为原料，可以有效降低生产成本；(3) The composite product of plant fiber and fully degradable material uses relatively low-priced plant fiber to partially replace the fully degradable product, which greatly reduces the cost of raw materials. Compared with the fully degradable products currently on the market, the production cost is significantly reduced; Bio-based fully degradable materials and biochar products use plant fibers with lower prices and better performance as raw materials, which can effectively reduce production costs;
(4)本项目生产过程所采用的生物质资源，可以实现产业“减碳”并生产“负碳”产品，助力国家“双碳”目标的实现。(4) The biomass resources used in the production process of this project can realize the "carbon reduction" of the industry and the production of "negative carbon" products, helping the realization of the national "double carbon" goal.
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (9)
- 一种以农林废弃物为原料制备减碳负碳产品的方法，其特征在于：所述的以农林废弃物为原料制备减碳负碳产品的方法包括如下步骤：A method for preparing carbon-reducing and negative-carbon products using agricultural and forestry wastes as raw materials, characterized in that: the method for preparing carbon-reducing and negative-carbon products using agricultural and forestry wastes as raw materials includes the following steps:S1，生态培育改造，首先选取需改良土地，并在选取土地上种植培育能生产高性能、高产量植物纤维植株的固碳经济植被；S1, ecological cultivation and transformation, first select the land to be improved, and plant and cultivate carbon-fixing economic vegetation that can produce high-performance and high-yield plant fiber plants on the selected land;S2，纤维化改造，对S1步骤培育的经济植被进行定期采伐回收，并对回收的植被原材料进行破碎、筛分作业，然后对经过筛分得到植物纤维碎屑进行改性活化作业，得到活化植物纤维；S2, fiber transformation, regularly felling and recycling the economic vegetation cultivated in step S1, crushing and screening the recovered vegetation raw materials, and then performing modification and activation operations on the plant fiber debris obtained through screening to obtain activated plants fiber;S3，制备产品成品，对S2步骤得到的活化植物纤维原料进行深度加工，分别得到低碳产品。S3, preparing the finished product, further processing the activated plant fiber raw material obtained in the step S2, and obtaining low-carbon products respectively.
- 根据权利要求1所述的一种以农林废弃物为原料制备减碳负碳产品的方法，其特征在于：所述S2步骤中改性活化作业时，采用酸处理、碱处理、热处理中的一种或几种共用。A method for preparing carbon-reducing and carbon-negative products using agricultural and forestry wastes as raw materials according to claim 1, characterized in that: during the modification and activation operation in the S2 step, one of acid treatment, alkali treatment and heat treatment is adopted one or more common.
- 根据权利要求1或2所述的一种以农林废弃物为原料制备减碳负碳产品的方法，其特征在于：所述的改性活化作业时用的改性活化处理设备包括机架、作业腔、输送辊道、蒸汽发生装置、雾化头、喷淋头、电加热装置、回流风机、药剂罐、喷淋泵及驱动电路，所述机架为横断面呈矩形且轴线与水平面平行分布的框架结构，所述作业腔、输送辊道均嵌于机架内并与机架轴线平行分布，所述作业腔为横断面呈矩形的腔体结构，所述输送辊道两端位于作业腔外且输送辊道有效长度的50％—80％部分嵌于作业腔内，且输送辊道与作业腔底部间间距不小于10毫米，所述雾化头若干，嵌于作业腔内并与作业腔底部连接，并位于输送辊道下方，且各雾化头轴线与输送辊道下端面呈30°—90°夹角，所述雾化头间并联并与蒸汽发生装置连通，所述喷淋头和电加热装置均若干，嵌于作业腔内并于作业腔顶部连接，且所述喷淋头和电加热装置轴线与输送辊道上端面相交并呈30°—90°夹角，所述喷淋头间并联，并分别通过导流管喷淋泵连通，所述喷淋泵另通过导流管与药剂罐连通，所述作业腔上端面设只是一个回流口，且回流口通过导流管与回流风机连通，所述回流风机另与蒸汽发生装置连通，所述蒸汽发生装置、回流风机、药剂罐、喷淋泵及驱动电路均与机架外表面连接，且驱动电路另与输送辊道、蒸汽发生装置、电加热装置、回流风机、药剂罐及喷淋泵电气连接。According to claim 1 or 2, a method for preparing carbon-reducing and negative-carbon products using agricultural and forestry wastes as raw materials is characterized in that: the modification and activation processing equipment used for the modification and activation operation includes racks, operating Cavity, conveying roller table, steam generating device, atomizing head, spraying head, electric heating device, return fan, chemical tank, spraying pump and driving circuit, the frame is rectangular in cross section and the axis is parallel to the horizontal plane The frame structure, the working chamber and the conveying roller table are embedded in the frame and distributed parallel to the axis of the frame, the working chamber is a cavity structure with a rectangular cross section, and the two ends of the conveying roller table are located In addition, 50%-80% of the effective length of the conveying roller table is embedded in the working chamber, and the distance between the conveying roller table and the bottom of the working chamber is not less than 10mm. The bottom of the cavity is connected and located below the conveying roller table, and the axis of each atomizing head forms an angle of 30°-90° with the lower end surface of the conveying roller table. The atomizing heads are connected in parallel and communicate with the steam generating device. Several shower heads and electric heating devices are embedded in the working chamber and connected to the top of the working chamber, and the axes of the spraying head and the electric heating device intersect with the upper end surface of the conveying roller table at an angle of 30°-90°. The shower heads are connected in parallel, and are respectively communicated with the spray pump through the diversion tube. The spray pump is also communicated with the chemical tank through the diversion tube. It communicates with the return fan, and the return fan communicates with the steam generating device. The steam generating device, the return fan, the medicine tank, the spray pump and the drive circuit are all connected with the outer surface of the frame, and the drive circuit is also connected with the conveying roller table. , Steam generating device, electric heating device, return fan, chemical tank and spray pump electrical connections.
- 根据权利要求3所述的一种以农林废弃物为原料制备减碳负碳产品的方法，其特征在于：所述的电加热装置为电加热丝、远红外辐照加热装置中的任意一种，且各电加热装置间相互并联，并与喷淋头间间隔分布。A method for preparing carbon-reducing and negative-carbon products using agricultural and forestry wastes as raw materials according to claim 3, characterized in that: the electric heating device is any one of an electric heating wire and a far-infrared radiation heating device , and the electric heating devices are connected in parallel with each other, and are spaced apart from the shower heads.
- 根据权利要求3所述的一种以农林废弃物为原料制备减碳负碳产品的方法，其特征在于：所述的输送辊道与机架及作业腔内侧面间均通过升降驱动机构间滑动连接，所述升降驱动机构轴线与机架轴线垂直分布，且所述升降驱动机构与驱动电路电气连接，所述升降驱动机构为液压缸、气压缸、电动伸缩杆、齿轮齿条机构中的任意一种。A method for preparing carbon-reducing and negative-carbon products using agricultural and forestry wastes as raw materials according to claim 3, characterized in that: the conveying roller table and the frame and the inner side of the working chamber are all slid between the lifting drive mechanism The axis of the lifting drive mechanism is vertically distributed to the axis of the frame, and the lifting drive mechanism is electrically connected to the drive circuit. The lifting drive mechanism is any one of a hydraulic cylinder, a pneumatic cylinder, an electric telescopic rod, and a rack and pinion mechanism. A sort of.
- 根据权利要求1所述的一种以农林废弃物为原料制备减碳负碳产品的方法，其特征在于：所述的S3中得到的低碳产品为生物炭、植物纤维材料与全降解材料的复合材料、生物基全降解材料三类产品。A method for preparing carbon-reducing and negative-carbon products using agricultural and forestry wastes as raw materials according to claim 1, characterized in that: the low-carbon products obtained in S3 are biochar, plant fiber materials and fully degradable materials Composite materials, bio-based fully degradable materials three types of products.
- 根据权利要求6所述的一种以农林废弃物为原料制备减碳负碳产品的方法，其特征在于：所述的生物炭制备方法为：首先对S2步骤得到的活化植物纤维在隔氧环境下加热至120℃—500℃，并持续加热20—60分钟，然后挤出成型，即可得到生物炭产品；其中S2步骤 得到的改性活化植物纤维粒径均为500目以上。According to claim 6, a method for preparing carbon-reducing and negative-carbon products using agricultural and forestry wastes as raw materials is characterized in that: the biochar preparation method is: firstly, the activated plant fibers obtained in step S2 are placed in an oxygen-insulated environment Heating at low temperature to 120°C-500°C, and continuing heating for 20-60 minutes, and then extruding to obtain biochar products; wherein the particle size of the modified and activated plant fibers obtained in the S2 step is all above 500 mesh.
- 根据权利要求7所述的一种以农林废弃物为原料制备减碳负碳产品的方法，其特征在于：在制备所述的植物纤维与全降解材料的复合材料时，首先对S2步骤得到的活化植物纤维与全降解材料进行共混，然后将共混后的物料添加到螺杆挤出造粒机中进行挤出作业，并在挤出过程中，另为螺杆挤出造粒机配备多台侧喂料机，通过侧喂料机向活化植物纤维与全降解材料的共混料中添加辅助料，并通过螺杆挤出造粒机进行挤出成型，得到植物纤维与全降解材料的复合材料颗粒。A method for preparing carbon-reducing and negative-carbon products using agricultural and forestry wastes as raw materials according to claim 7, characterized in that: when preparing the composite material of the plant fiber and the fully degradable material, firstly, the obtained in the step S2 The activated plant fiber is blended with the fully degradable material, and then the blended material is added to the screw extrusion granulator for extrusion operation, and during the extrusion process, the screw extrusion granulator is equipped with multiple sets Side feeder, add auxiliary materials to the blend of activated plant fiber and fully degradable material through the side feeder, and extrude through the screw extrusion granulator to obtain the composite material of plant fiber and fully degradable material particles.
- 根据权利要求6所述的一种以农林废弃物为原料制备减碳负碳产品的方法，其特征在于：所述的生物基全降解材料制备方法为，首先将S2步骤得到的活化植物纤维添加到发酵反应釜中进行生物发酵，并对发酵后的产物进行分离和提纯作业，最后对提纯后的产物通过螺杆挤出造粒机进行挤出造粒作业，即可得到生物基全降解材料；其中S2步骤得到的活化植物纤维粒径为1000目以上。According to claim 6, a method for preparing carbon-reducing and negative-carbon products using agricultural and forestry wastes as raw materials is characterized in that: the preparation method of the bio-based fully degradable material is: first, the activated plant fiber obtained in the step S2 is added Carry out biological fermentation in the fermentation reactor, separate and purify the fermented product, and finally extrude and granulate the purified product through a screw extrusion granulator to obtain bio-based fully degradable materials; Wherein the activated plant fiber particle size obtained in step S2 is above 1000 mesh.
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