CN110252779B - Process for integrally producing wood-plastic board by using mineralized garbage - Google Patents
Process for integrally producing wood-plastic board by using mineralized garbage Download PDFInfo
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- CN110252779B CN110252779B CN201910664683.3A CN201910664683A CN110252779B CN 110252779 B CN110252779 B CN 110252779B CN 201910664683 A CN201910664683 A CN 201910664683A CN 110252779 B CN110252779 B CN 110252779B
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000008569 process Effects 0.000 title claims abstract description 35
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 33
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 claims abstract description 26
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 21
- 239000002025 wood fiber Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 238000001125 extrusion Methods 0.000 claims abstract description 17
- 239000000654 additive Substances 0.000 claims abstract description 9
- 230000000996 additive effect Effects 0.000 claims abstract description 8
- 238000002844 melting Methods 0.000 claims abstract 3
- 230000008018 melting Effects 0.000 claims abstract 3
- 238000012216 screening Methods 0.000 claims description 37
- 239000000463 material Substances 0.000 claims description 33
- 238000003723 Smelting Methods 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 18
- 238000007873 sieving Methods 0.000 claims description 15
- 230000005484 gravity Effects 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 239000003546 flue gas Substances 0.000 claims description 11
- 239000003864 humus Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 8
- 239000002028 Biomass Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 238000009987 spinning Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 239000000571 coke Substances 0.000 claims description 3
- 239000007822 coupling agent Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
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- 238000003756 stirring Methods 0.000 claims description 3
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- 239000002699 waste material Substances 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 229920001587 Wood-plastic composite Polymers 0.000 abstract description 3
- 239000011155 wood-plastic composite Substances 0.000 abstract description 3
- 238000010924 continuous production Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 12
- 239000002023 wood Substances 0.000 description 11
- 230000004048 modification Effects 0.000 description 4
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0203—Separating plastics from plastics
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/78—Recycling of wood or furniture waste
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a process for integrally producing a wood-plastic board by using mineralized garbage, wherein a wood-plastic board raw material is processed by using the mineralized garbage and comprises the following raw materials, by mass, 30-35 parts of mixed plastic components, 50 parts of wood fiber components, 15-20 parts of spun fiber components and 0.5-1 part of an additive. The process provided by the invention is a wood-plastic composite production process which has the advantages of continuous production, low energy consumption, low production cost and simple operation, and renewable resources such as waste plastics and wood fibers mixed in the mineralized refuse are subjected to integrated mixing, melting and extrusion molding to realize the production of the wood-plastic composite, so that the mineralized refuse is fully recycled.
Description
Technical Field
The invention relates to the technical field of solid waste resource utilization, in particular to a process for integrally producing wood-plastic plates by utilizing mineralized garbage.
Background
In recent years, with the improvement of living standard of people, housing conditions are continuously improved, and the requirements on the quantity and quality of wood materials are higher and higher. However, the forest resources are becoming increasingly poor in the world, people in many places begin to limit the use of forest resources, and wood composite materials begin to become important substitutes and supplements for pure wood materials, wherein the plastic-wood composite materials are very excellent wood composite materials. The composite wood-plastic material is a composite wood material prepared with lignocellulose as main material and through proper treatment, mixing with various kinds of plastic in certain proportion, adding special assistant, high temperature extrusion, forming and other steps. In the research of production raw materials of plastic-wood composite materials, new plastic or leftover materials of other plastic products are mostly used as raw materials, but a large amount of waste plastic and wood fiber substances in a large amount of domestic garbage produced every year in China are not effectively utilized, so that the plastic-wood composite materials can become the raw materials of the plastic-wood composite materials with higher cost performance, and the plastic-wood composite materials used as the production raw materials of the plastic-wood composite materials are an effective way for recycling solid wastes, and are a new hot topic in the material field research in recent years.
In order to solve the problems, the prior Chinese patent application publication No. CN206264391U discloses a production line for producing wood-plastic building templates by using domestic garbage, which comprises a plate feeder, a magnetic separator, a roller screening machine, a winnowing machine, a crushing and cleaning machine, a granulating machine, a high-low mixing machine set, an extruding machine head, a cooling and shaping machine and an edge cutting machine which are connected in sequence, and is mainly used for producing regenerated plastic products such as wood-plastic building templates, plastic rib plates and the like by crushing, granulating, extruding and shaping waste plastics, fibers and the like in the domestic garbage. In addition, the application publication No. CN102010612A discloses a method for recycling polymer composite environmental protection material in domestic garbage industrial production, which comprises the steps of sorting out metals and nonferrous metals in the domestic garbage and the superhard overweight block materials embedded together, producing the materials into superfine dry powder by using equipment and a method of normal temperature dehydration drying, adding additives for modification, and mixing the pretreated dry powder and the plastic through homogeneous modification to produce polymer composite environmental protection powder material, wherein the powder material can be used for producing various recyclable products such as building templates, drain pipes, packaging plates, color wallboards, warehouse trays, highway sound insulation plates and the like.
The defects in the prior art are that the plastic components separated from the household garbage can be used as the raw materials of the wood-plastic board after being cleaned, dried and granulated, a large amount of production wastewater is produced after cleaning, and the drying and granulation can generate no small energy consumption and volatilize VOC gas. On one hand, the method has great influence on the surrounding environment, and on the other hand, the complexity of the process links further increases the production cost of enterprises.
Disclosure of Invention
The invention aims to provide a process for carrying out integrated production on wood-plastic plates by using mineralized refuse, which has the advantages of continuous production, low energy consumption, low production cost and simple operation, and can carry out integrated mixing, smelting and extrusion molding on renewable resources such as mixed waste plastics, wood fibers and the like to produce wood-plastic composite materials, thereby realizing resource utilization of the mineralized refuse.
In order to achieve the purpose, the invention adopts the following technical scheme: a process for carrying out integrated production on wood-plastic boards by using mineralized refuse comprises the following steps.
(1) Pouring the mineralized refuse into a refuse feeding bin, then conveying the refuse to an inclined plate sieving machine, sieving out organic humus soil with the particle diameter of less than 10mm in the mineralized refuse by the inclined plate sieving machine, conveying the sieved mineralized refuse to a double-shaft shredder, and burying the organic humus soil.
(2) Shredding the screened mineralized refuse in the step (1) in a double-shaft shredder, cleaning the mineralized refuse wrapped by large spun fiber wrappings, avoiding the mutual inclusion phenomenon of the mineralized refuse, improving the accuracy of subsequent gravity screening of the mineralized refuse, and controlling the particle size of the shredded mineralized refuse within 20 mm; the shredded mineralized garbage enters a specific gravity sieving machine for gravity sieving treatment, two kinds of garbage of heavy components and light components are obtained after sieving, and the two kinds of garbage are respectively treated in the next step; and (3) when the particle size of the mineralized refuse screened in the step (1) is within 20mm and the mineralized refuse is well dispersed, skipping the shredding link in the step to directly carry out gravity screening.
(3) Conveying the heavy components screened in the step (2) to a winnowing machine for secondary screening, screening the heavy components by the winnowing machine by setting a horizontal high-speed airflow, wherein the volume of the brickwork is very small and the wind area is far lower than that of the spun fiber components under the same mass because the density of the brickwork is higher than that of the spun fiber components, and the spun fiber components can be taken away by the high-speed airflow in the winnowing machine so as to complete the screening of the brickwork; and (4) burying the screened tile stones, and conveying the spun fiber components to a double-shaft crusher.
(4) And (3) conveying the light components screened in the step (2) to a bouncing screening machine for secondary screening, screening the light components by the bouncing screening machine through the friction force between materials and a screening plate and the difference of the shapes of the materials, separating the screened garbage into two components, namely a flake mixed plastic component and a block wood fiber component, conveying the mixed plastic component to a double-shaft fine crusher, and conveying the wood fiber component to the double-shaft crusher.
(5) And (3) conveying the spinning fiber components screened in the step (3) and the blocky wood fiber components screened in the step (4) to a double-shaft crusher together for crushing treatment, crushing the mixed components to be within 3mm, and conveying the crushed mixed components to a high-speed mixing extruder.
(6) Conveying the flake mixed plastic components screened in the step (4) to a double-shaft fine crusher for crushing treatment, controlling the particle size of crushed garbage within 5mm, and conveying the crushed garbage to a high-speed smelting machine; the smelting temperature of the high-speed smelting machine is 105-120 ℃, and the material extrusion time is controlled to be 120-180 seconds; in a high-speed smelting machine, thermoplastic plastics in the flake hybrid plastic components are changed into a molten liquid state to be extruded out, and then the extruded liquid is conveyed to a high-speed mixing extruder; the infusible other plastics in the flake mixed plastic components are heated to slightly carbonize and coke to form blocky carbide, and then the blocky carbide is discharged and conveyed to a biomass hot blast furnace to be used as fuel.
(7) Conveying the mixed plastic component in the molten liquid state in the step (6), the wood fiber component and the spinning fiber component which are crushed in the step (5) to a high-speed mixing extruder; the adding proportion of the hybrid plastic component is 30-35%, the adding proportion of the wood fiber component is 50%, and the adding proportion of the spinning fiber component is 15-20%; in the material mixing process, an additive is added into the material, wherein the additive is an organosilane coupling agent, and the adding proportion is 0.5-1%; the smelting temperature of the high-speed mixing extruder is controlled to be 280-300 ℃, and the material extrusion time is controlled to be 60-120 seconds; the raw material substances are mixed in the process of spiral stirring extrusion forming of a high-speed mixing extruder, three-stage processes of raw material drying, raw material mixing and extrusion forming are adopted for integrated production, and finally the wood-plastic plate is produced.
(8) And (3) burning the blocky carbide formed in the step (6) by using a biomass hot-blast stove to generate high-temperature flue gas, controlling the temperature of the high-temperature flue gas to be 850-750 ℃, conveying the high-temperature flue gas to an oil-gas heat exchanger through a sealed pipeline, controlling the temperature of heat conducting oil to be 280-300 ℃ through the heat exchange effect of the oil-gas heat exchanger, and sequentially providing a heat source for a high-speed mixing extruder and a high-speed smelting machine by using the heat conducting.
Compared with the prior art, the invention has the following advantages.
1) The method utilizes the recyclable mixed plastics, wood fibers and spun fibers in the mineralized refuse to produce the wood-plastic board, thereby not only realizing the resource utilization of the mineralized refuse, but also reducing the production cost of the wood-plastic board and improving the economic benefit.
2) The recoverable mixed plastics in the mineralized refuse is influenced by pressure and temperature in the landfill process, and compared with the mixed plastics in the household refuse, the recoverable mixed plastics in the mineralized refuse does not need to be modified, so that the process and equipment are simplified, and the investment cost is saved.
3) The process of the invention does not need to separately clean and dry the mixed plastic, thereby avoiding secondary pollution, reducing the production cost of the wood-plastic board and improving the economic benefit.
4) The process integrates three processes of drying the raw materials, mixing the raw materials and extruding and forming into a whole, saves a large amount of energy consumption and labor, reduces the operation difficulty of process production and improves the production efficiency.
Drawings
FIG. 1 is a schematic view of the process flow of the integrated production of wood-plastic panels by using mineralized refuse.
In the figure: 1 is a garbage feeding bin, 2 is an inclined plate screening machine, 3 is a double-shaft shredding machine, 4 is a specific gravity screening machine, 5 is a winnowing machine, 6 is a bouncing screening machine, 7 is a double-shaft fine crushing machine, 8 is a double-shaft crushing machine, 9 is a high-speed smelting machine, 10 is a biomass hot-blast stove, 11 is an oil-gas heat exchanger, and 12 is a high-speed mixing extruder; a is organic humus, B is a heavy component, C is a light component, D is masonry, E is a spun fiber component, F is a wood fiber component, G is a mixed plastic component, H is an additive, I is a massive carbide, J heat conducting oil, K is high-temperature flue gas, and L is mineralized waste.
Detailed Description
The technical scheme and the specific implementation steps of the invention are described in detail below with reference to the accompanying drawing 1 and the embodiment, and the process for integrally producing the wood-plastic plate by using the mineralized refuse comprises the following steps.
(1) The method comprises the steps of pouring mineralized waste L into a waste feeding bin 1, conveying the mineralized waste L to an inclined plate screening machine 2, screening out organic humus soil A with the particle diameter of less than 10mm in the mineralized waste L through the inclined plate screening machine 2, conveying the screened mineralized waste L to a double-shaft shredder 3, and performing landfill treatment on the organic humus soil A.
(2) Shredding the screened mineralized refuse L in the step (1) in a double-shaft shredder 3, cleaning the mineralized refuse L wrapped by large spun fiber wrappings to avoid the mutual inclusion phenomenon of the mineralized refuse L and improve the accuracy of subsequent gravity screening of the mineralized refuse L, and controlling the particle size of the shredded mineralized refuse L within 20 mm; the shredded mineralized refuse L enters a specific gravity sieving machine 4 for gravity sieving treatment, and two kinds of refuse of a heavy component B and a light component C are obtained after sieving and are respectively treated in the next step; and (3) when the particle size of the mineralized refuse L screened in the step (1) is within 20mm and the mineralized refuse is well dispersed, skipping the shredding link in the step to directly carry out gravity screening.
(3) Conveying the heavy component B screened in the step (2) to a winnowing machine 5 for secondary screening, screening the heavy component B by arranging high-speed airflow in the horizontal direction through the winnowing machine 5, wherein the size of the brickwork D is very small and the wind area is far lower than that of the spun fiber component E under the same mass because the density of the brickwork D is higher than that of the spun fiber component E, and the spun fiber component E can be taken away by the high-speed airflow in the winnowing machine 5 so as to complete the screening of the brickwork D; and (4) burying the screened tile stone D, and conveying the spun fiber component E to a double-shaft crusher 8.
(4) And (3) conveying the light component C screened in the step (2) to a bouncing screening machine 6 for secondary screening, screening the light component C by the bouncing screening machine 6 through the friction force between materials and a screening plate and the difference of the shapes of the materials, separating the screened garbage into a flake mixed plastic component G and a block wood fiber component F, conveying the mixed plastic component G to a double-shaft fine crusher 7, and conveying the wood fiber component F to a double-shaft crusher 8.
(5) And (3) conveying the spun fiber component E screened in the step (3) and the blocky wood fiber component F screened in the step (4) to a double-shaft crusher 8 together for crushing treatment, crushing the mixed component to be within 3mm, and conveying the crushed mixed component to a high-speed mixing extruder 12.
(6) Conveying the flake mixed plastic component G screened out in the step (4) to a double-shaft fine crusher 7 for crushing treatment, controlling the particle size of crushed garbage within 5mm, and conveying the crushed garbage to a high-speed smelting machine 9; the smelting temperature of the high-speed smelting machine 9 is 105-120 ℃, and the material extrusion time is controlled to be 120-180 seconds; in the high-speed smelting machine 9, the thermoplastic plastics in the flake mixed plastic component G are changed into a molten liquid state to be extruded, and then the extruded liquid is conveyed to the high-speed mixing extruder 12; and (3) heating other infusible plastics in the flake mixed plastic component G to slightly carbonize and coke to form blocky carbide I, discharging the blocky carbide I, and conveying the blocky carbide I to the biomass hot blast stove 10 to be used as fuel.
(7) Conveying the mixed plastic component G in the molten liquid state in the step (6), the wood fiber component F and the spun fiber component E crushed in the step (5) to a high-speed mixing extruder 12; the adding proportion of the hybrid plastic component G is 30-35%, the adding proportion of the wood fiber component F is 50%, and the adding proportion of the spinning fiber component E is 15-20%; in the material mixing process, an additive H is added into the material, wherein the additive H is an organosilane coupling agent and the adding proportion is 0.5-1%; the smelting temperature of the high-speed mixing extruder 12 is controlled to be 280-300 ℃, and the material extrusion time is controlled to be 60-120 seconds; the raw material substances are mixed in the process of spiral stirring extrusion forming of the high-speed mixing extruder 12, three-stage processes of raw material drying, raw material mixing and extrusion forming are adopted for integrated production, and finally the wood-plastic plate is produced.
(8) The biomass hot blast stove 10 burns the blocky carbide I formed in the step (6) to generate high-temperature flue gas K, the temperature of the high-temperature flue gas K is controlled to be 850-750 ℃, the high-temperature flue gas K is conveyed to the oil-gas heat exchanger 11 through a sealed pipeline, the temperature of the heat conduction oil J is controlled to be 280-300 ℃ under the heat exchange effect of the oil-gas heat exchanger 11, and the heat conduction oil J sequentially provides heat sources for the high-speed mixing extruder 12 and the high-speed smelting machine 9.
The above-described embodiments are merely preferred embodiments of the present invention, which are not intended to limit the present invention in any way, and various possible combinations of the present invention are not described separately. It should be noted that, in the technical idea of the present invention, a person skilled in the art can make many simple modifications to the technical solution of the present invention according to various aspects such as product requirement, raw material quality and manpower configuration, and all similar substitutions and modifications are obvious to those skilled in the art, which are considered to be included in the spirit, scope and content of the present invention and also fall into the protection scope of the present invention.
Claims (7)
1. A process for carrying out integrated production on wood-plastic boards by using mineralized refuse is characterized by comprising the following steps:
(1) pouring the mineralized refuse into a refuse feeding bin, then conveying the refuse to an inclined plate sieving machine, sieving out organic humus soil with the particle diameter of less than 10mm in the mineralized refuse by the inclined plate sieving machine, conveying the sieved mineralized refuse to a double-shaft shredder, and burying the organic humus soil;
(2) shredding the screened mineralized refuse in the step (1) in a double-shaft shredder, and cleaning the mineralized refuse wrapped by large spun fiber wrappings to avoid the mutual inclusion phenomenon of the mineralized refuse and improve the accuracy of subsequent gravity screening of the mineralized refuse; the shredded mineralized garbage enters a specific gravity sieving machine for gravity sieving treatment, two kinds of garbage of heavy components and light components are obtained after sieving, and the two kinds of garbage are respectively treated in the next step; when the particle size of the mineralized refuse screened in the step (1) is within 20mm and the mineralized refuse is well dispersed, the step can be skipped to the shredding link to directly carry out gravity screening;
(3) conveying the heavy components screened in the step (2) to a winnowing machine for secondary screening, screening the heavy components by the winnowing machine by setting a horizontal high-speed airflow, wherein the brickwork is higher than the density of the textile fiber components, the volume of the brickwork is very small under the same mass, the wind area is far lower than the textile fiber components, the textile fiber components can be taken away by the high-speed airflow in the winnowing machine, screening of the brickwork is further completed, the screened brickwork is subjected to landfill treatment, and the textile fiber components are conveyed to a double-shaft crusher;
(4) conveying the light components screened in the step (2) to a bouncing screening machine for secondary screening, screening the light components by the bouncing screening machine through the friction force between materials and a screening plate and the difference of the shapes of the materials, separating the screened garbage into two components of a flake hybrid plastic component and a block wood fiber component, conveying the hybrid plastic component to a double-shaft fine crusher, and conveying the wood fiber component to the double-shaft crusher;
(5) conveying the textile fiber components screened in the step (3) and the blocky wood fiber components screened in the step (4) to a double-shaft crusher together for crushing treatment, and conveying the crushed mixed components to a high-speed mixing extruder;
(6) conveying the flaky mixed plastic components screened in the step (4) to a double-shaft fine crusher for crushing treatment, and conveying the crushed garbage to a high-speed smelting machine; in a high-speed smelting machine, thermoplastic plastics in the flake hybrid plastic components are changed into a molten liquid state to be extruded out, and then the extruded liquid is conveyed to a high-speed mixing extruder; the infusible other components in the flaky mixed plastic components are heated to slightly carbonize and coke to form blocky carbide, and then the blocky carbide is discharged and conveyed to a biomass hot blast furnace to be used as fuel;
(7) conveying the mixed plastic component in the molten liquid state in the step (6), the wood fiber component and the spinning fiber component which are crushed in the step (5) to a high-speed mixing extruder; the adding proportion of the hybrid plastic component is 30-35%, the adding proportion of the wood fiber component is 50%, and the adding proportion of the spinning fiber component is 15-20%; in the material mixing process, an additive is added into the material, wherein the additive is an organosilane coupling agent, and the adding proportion is 0.5-1%; mixing the raw material substances in the process of spiral stirring extrusion forming of a high-speed mixing extruder, performing integrated production by adopting three-stage processes of raw material drying, raw material mixing and extrusion forming, and finally producing the wood-plastic plate;
(8) and (3) burning the blocky carbide formed in the step (6) by using the biomass hot blast stove to generate high-temperature flue gas, conveying the high-temperature flue gas to the oil-gas heat exchanger through a sealed pipeline, and controlling the temperature of heat conducting oil through the heat exchange effect of the oil-gas heat exchanger, wherein the heat conducting oil sequentially provides a heat source for the high-speed mixing extruder and the high-speed smelting machine.
2. The process for integrated production of wood-plastic panels by using mineralized refuse according to claim 1, which is characterized in that: the particle size of the organic humus soil in the mineralized refuse obtained in the step (1) needs to be controlled, and the particle size of the screened organic humus soil is controlled to be less than 10 mm.
3. The process for integrated production of wood-plastic panels by using mineralized refuse according to claim 1, which is characterized in that: and (3) controlling the particle size of the mineralized refuse in the step (2) in the shredding process, wherein the particle size after shredding is controlled within 20 mm.
4. The process for integrated production of wood-plastic panels by using mineralized refuse according to claim 1, which is characterized in that: and (3) controlling the particle size of the mixed components in the step (5) in the crushing process, wherein the particle size after crushing is controlled within 3 mm.
5. The process for integrated production of wood-plastic panels by using mineralized refuse according to claim 1, which is characterized in that: the particle size control is needed in the crushing process of the flake hybrid plastic components in the step (6), and the particle size of the crushed garbage is controlled within 5 mm; the high-speed smelting machine in the step (6) needs to control the smelting temperature and the material extrusion time, the smelting temperature of the high-speed smelting machine is 105-120 ℃, and the material extrusion time is controlled to be 120-180 seconds.
6. The process for integrated production of wood-plastic panels by using mineralized refuse according to claim 1, which is characterized in that: the high-speed mixing extruder in the step (7) needs to control the melting temperature and the material extrusion time, the melting temperature of the high-speed mixing extruder is controlled to be 280-300 ℃, and the material extrusion time is controlled to be 60-120 seconds.
7. The process for integrated production of wood-plastic panels by using mineralized refuse according to claim 1, which is characterized in that: the temperature of the high-temperature flue gas and the heat conducting oil in the step (8) needs to be controlled, the temperature of the high-temperature flue gas is controlled to be 850-750 ℃, and the temperature of the heat conducting oil is controlled to be 280-300 ℃.
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