CN111187427A - Agricultural and forestry solid waste three-element co-production and hot-pressing cleaning process equipment thereof - Google Patents
Agricultural and forestry solid waste three-element co-production and hot-pressing cleaning process equipment thereof Download PDFInfo
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- 238000007731 hot pressing Methods 0.000 title claims abstract description 104
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000002910 solid waste Substances 0.000 title claims abstract description 34
- 238000004140 cleaning Methods 0.000 title claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 129
- 239000007788 liquid Substances 0.000 claims abstract description 119
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 90
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000010411 cooking Methods 0.000 claims abstract description 69
- 239000007791 liquid phase Substances 0.000 claims abstract description 69
- 239000002994 raw material Substances 0.000 claims abstract description 51
- 238000002360 preparation method Methods 0.000 claims abstract description 46
- 229920002678 cellulose Polymers 0.000 claims abstract description 36
- 239000001913 cellulose Substances 0.000 claims abstract description 36
- 238000005406 washing Methods 0.000 claims abstract description 36
- 229920005610 lignin Polymers 0.000 claims abstract description 34
- 229920002488 Hemicellulose Polymers 0.000 claims abstract description 33
- 239000007790 solid phase Substances 0.000 claims abstract description 30
- 238000009270 solid waste treatment Methods 0.000 claims abstract description 15
- 239000012071 phase Substances 0.000 claims abstract description 13
- 238000004064 recycling Methods 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 3
- 239000010865 sewage Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 65
- 238000010438 heat treatment Methods 0.000 claims description 31
- 238000004321 preservation Methods 0.000 claims description 30
- 239000003814 drug Substances 0.000 claims description 25
- 238000001704 evaporation Methods 0.000 claims description 24
- 230000008020 evaporation Effects 0.000 claims description 23
- 238000012216 screening Methods 0.000 claims description 22
- 239000000428 dust Substances 0.000 claims description 20
- 238000002425 crystallisation Methods 0.000 claims description 12
- 230000008025 crystallization Effects 0.000 claims description 12
- 239000002918 waste heat Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 210000002421 cell wall Anatomy 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- 229940079593 drug Drugs 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims 3
- 230000010354 integration Effects 0.000 claims 3
- 238000005336 cracking Methods 0.000 claims 1
- 238000000746 purification Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000029087 digestion Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids
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- 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
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- 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
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07G—COMPOUNDS OF UNKNOWN CONSTITUTION
- C07G1/00—Lignin; Lignin derivatives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/02—Gases or liquids enclosed in discarded articles, e.g. aerosol cans or cooling systems of refrigerators
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Abstract
The invention relates to a three-element co-production and hot-pressing cleaning process device for agriculture and forestry solid waste, which is mainly characterized in that: based on agriculture and forestry solid waste treatment and the aim of co-producing cellulose, hemicellulose and lignin, a hot-pressing phase change decomposition and hot-pressing solid-liquid separation combined process and core equipment for agriculture and forestry solid waste treatment and digestion are constructed, and clean production and energy-saving and environment-friendly mechanisms such as closed recycling of agriculture and forestry resources full-system production raw materials and process water liquid without sewage and solid waste in the production process are established. The method comprises the process equipment of clean preparation of production raw materials of agricultural and forestry solid wastes, primary hot-pressing decomposition and hot-pressing separation, primary separation of liquid phase to prepare hemicellulose, secondary hot-pressing decomposition and hot-pressing separation, secondary separation of solid phase to prepare cellulose, secondary separation of liquid phase to prepare lignin, water source washing circulation and cooking liquor preparation, condensed water recycling heat source and steam preparation circulation and the like. The invention has the beneficial effects that: the agricultural and forestry solid waste treatment has high value and high efficiency, is combined with three elements, develops hot pressing cleaning process equipment, is energy-saving and environment-friendly, and is beneficial to agricultural rural environment treatment by combining application.
Description
Technical Field
The invention relates to the fields of energy conservation, environmental protection and circular economy of agriculture and forestry solid waste treatment and plant utilization thereof, in particular to agriculture and forestry solid waste three-element co-production and hot-pressing cleaning process equipment thereof.
Technical Field
At present, the treatment of agriculture and forestry solid wastes becomes one of the key points of agricultural and rural environment treatment.
At present, the agriculture and forestry solid waste treatment mainly comprising direct combustion power generation of agriculture and forestry waste and natural gas production by biomass is in an initial scale; meanwhile, the raw material conversion for the agriculture and forestry solid waste treatment is relatively lagged, and the main reason is lack of the technology and equipment for converting the agriculture and forestry solid waste into raw material which is mature earlier.
It is known that the main components of plant and agricultural and forestry solid wastes are cellulose, hemicellulose, lignin and the like, namely three-element structural characteristics. Therefore, if one of the three is used, the other two are the waste, and if the other two are used, the other one is the waste, and only the three are fully used, the waste and the pollution source can be eliminated; the method is the basic logic and technical principle of raw material utilization in plant and agriculture and forestry solid waste treatment.
The basis and key technology of plant and agriculture and forestry solid waste material processing are to decompose, separate and produce cellulose, hemicellulose, lignin and the like through a plant cooking process and equipment.
The current plant cooking process and equipment are mainly characterized in that: firstly, inputting plant raw materials into a container, raising the temperature and the pressure, and carrying out solid-liquid phase change decomposition under the state of heat preservation and pressure preservation; and secondly, cooling the decomposed materials, reducing the temperature, reducing the pressure and cooling the materials, and then performing solid-liquid separation by using normal-temperature and normal-pressure equipment. Therefore, the traditional plant cooking process and equipment are typical 'hot pressing solid-liquid phase change decomposition and normal solid-liquid separation after cooling' basic process and equipment combination thereof.
The traditional plant cooking process and equipment have serious defects in actual production. The process and the equipment for separating solid from liquid in a normal state by cooling and depressurizing the decomposed materials not only cause large heat loss and high energy consumption in the plant cooking process, but also cause the decomposed materials to have condensation and deposition phenomena when meeting cold so as to reduce the cooking efficiency.
Therefore, in order to overcome the defects of the existing agriculture and forestry solid waste treatment technology and equipment, the invention provides and constructs a hot-pressing type agriculture and forestry solid waste three-element clean co-production process and equipment from the viewpoint of improving energy efficiency of energy conservation and environmental protection and fully developing hot-pressing application and structural thinking based on the heat energy effect of plant cooking, and aims to help to further promote green ecological construction.
Disclosure of Invention
The invention provides a three-element co-production and hot-pressing cleaning process device for agriculture and forestry solid wastes, which is mainly characterized in that: the method is based on the raw material targets of agriculture and forestry solid waste treatment and combined production of cellulose, hemicellulose, lignin and above three-element-based products, and the like, constructs a hot-pressing phase change decomposition and hot-pressing solid-liquid separation combined process and core equipment for agriculture and forestry solid waste treatment and digestion, and establishes clean production and energy-saving and environment-friendly mechanisms such as closed cyclic utilization of agriculture and forestry resources production raw materials and process water liquid without sewage and solid waste discharge in the production process. And the second step is composed of technological equipment for cleanly preparing production raw materials from agricultural and forestry solid wastes, carrying out primary hot-pressing decomposition and hot-pressing separation, preparing hemicellulose from a primary separated liquid phase, carrying out secondary hot-pressing decomposition and hot-pressing separation, preparing cellulose from a secondary separated solid phase, preparing lignin from a secondary separated liquid phase, carrying out water source washing circulation and cooking liquor preparation, recycling condensed water as a heat source, carrying out steam preparation circulation and the like.
One of the technical equipments for clean preparation of raw materials for production of agricultural and forestry solid wastes aims to reduce the environmental air pressure or negative pressure of the agricultural and forestry solid waste treatment space to prevent dust pollution, and simultaneously, utilizes wind screening and negative pressure dust removal to purify the environment. The second one consists of agricultural and forestry solid waste material workshop, material grabbing and traveling crane, crusher, particle dust collector, raw material producing bin, dust collector, blower, etc. Wherein, in an agriculture and forestry solid waste raw material workshop, a material grabbing crane inputs materials into a crusher to be crushed into production raw materials; the air inlets and outlets of the pulverizer, the particle dust remover, the production raw material bin, the dust remover, the fan and the like are connected through the air pipes, so that wind power material conveying, dust removing and air exhausting in the production raw material preparation process are formed.
The first hot pressing decomposition and hot pressing separation process equipment mainly adopts a steam medium, hot pressing phase change decomposition and hot pressing solid-liquid separation as basic processes and equipment, and aims to prevent decomposition products from being condensed and deposited without adding medicaments in the decomposition and separation process of hemicellulose. The second step mainly comprises a production raw material conveying machine, a production raw material heating and primary hot-pressing phase-change decomposition container, a primary heat-preservation and pressure-maintaining decomposition material conveying machine, a primary heat-preservation and pressure-maintaining decomposition material solid-liquid separation device, a primary separation liquid-phase conveying machine, a primary separation solid-phase conveying machine and the like. Wherein, the feed inlet and the discharge outlet of the production raw material conveying machine are respectively and equally connected with the discharge outlet of the production raw material bin of the agricultural and forestry solid waste clean preparation production raw material process equipment and the feed inlet of the production raw material heating and primary hot-pressing phase-change decomposition container; the feeding hole and the discharging hole of the primary heat-preservation and pressure-maintaining state decomposition material conveying machine are respectively connected with the discharging hole of the production raw material heating and primary hot-pressing phase-change decomposition container, the feeding hole of the primary heat-preservation and pressure-maintaining state decomposition material solid-liquid separation equipment and the like; the liquid outlet and the discharge port of the primary heat-preservation and pressure-maintaining decomposition material solid-liquid separation equipment are respectively connected with the liquid inlet of the primary separation liquid-phase conveying machine and the feed inlet of the primary separation solid-phase conveying machine.
The process equipment for preparing hemicellulose by the primary separation liquid phase is mainly used for recycling waste heat and excess pressure based on the primary separation liquid phase in a high-temperature and high-pressure state and simultaneously preparing the hemicellulose and hemicellulose-based products. The second device mainly comprises a primary separation liquid phase waste heat and residual pressure utilization device, a hemicellulose preparation device and the like. Wherein, a liquid inlet and a liquid outlet of the primary separation liquid phase waste heat and residual pressure utilization device are respectively connected with a liquid outlet of the primary separation liquid phase conveying machine of the primary hot-press decomposition and hot-press separation process equipment and a liquid inlet of the hemicellulose preparation device, and the required hemicellulose and hemicellulose-based products are obtained by the hemicellulose preparation device.
The secondary hot-pressing decomposition and hot-pressing separation process equipment is mainly based on the primary digestion and cracked plant structure and exposed cell walls, and adopts the hot-pressing phase change decomposition and hot-pressing solid-liquid separation as basic processes and equipment, so that the production process has the effects of low heat, low drug, low time and low consumption, and the decomposition products are prevented from being condensed and deposited. The second step mainly comprises a material heating and secondary hot-pressing phase-change decomposition container, a secondary heat-preservation and pressure-maintaining decomposition material conveying machine, a secondary heat-preservation and pressure-maintaining decomposition material solid-liquid separation device, a secondary separation liquid-phase conveying machine, a secondary separation solid-phase conveying machine and the like. Wherein, the material heating and secondary hot-pressing phase-change decomposition container feed inlet is connected with the discharge outlet of the primary separation solid-phase conveying machinery of the primary hot-pressing decomposition and hot-pressing separation process equipment; the feeding hole and the discharging hole of the secondary heat-preservation and pressure-maintaining state decomposition material conveying machine are respectively connected with the discharging hole of the material heating and secondary hot-pressing phase-change decomposition container, the feeding hole of the secondary heat-preservation and pressure-maintaining state decomposition material solid-liquid separation equipment and the like; the liquid outlet and the discharge port of the secondary heat-preservation pressure-maintaining decomposition material solid-liquid separation equipment are respectively connected with the liquid inlet of a secondary separation liquid-phase conveying machine and the feed inlet of a secondary separation solid-phase conveying machine.
The process equipment for preparing the cellulose by the secondary separation solid phase can be used for recycling the residual heat and the residual pressure of the high-temperature high-pressure secondary separation solid phase, washing, replacing and recycling cooking water liquid, and realizes energy-saving and environment-friendly preparation of the cellulose and cellulose base products. The second device mainly comprises a device for washing and recovering concentrated solution, a device for screening and preparing cellulose and the like. Wherein, the feed inlet and the discharge outlet of the washing and recovering concentrated solution device are respectively connected with the discharge outlet of the secondary separation solid phase conveying machine of the secondary hot-pressing decomposition and hot-pressing separation process equipment, the feed inlet of the cellulose screening and preparing device and the like, and the required cellulose and cellulose base products are produced by the cellulose screening and preparing device.
The technological equipment for preparing lignin by using the secondary separation liquid phase can utilize the high-temperature and high-pressure state to evaporate the secondary separation liquid phase and perform multi-effect evaporation so as to save energy and improve efficiency, and can flexibly prepare lignin and lignin-based series products according to requirements. The second one consists of mainly evaporating and concentrating or crystallizing unit, lignin preparing unit, etc. Wherein, a liquid inlet and a discharge port of the evaporation concentration or crystallization device are respectively connected with a liquid outlet of a secondary separation liquid phase conveying machine of the secondary hot-pressing decomposition and hot-pressing separation process equipment, a feed inlet of a lignin preparation device and the like, and the required lignin and lignin-based products are produced by the lignin preparation device.
The water source washing circulation and cooking liquor preparation process equipment utilizes an external water source, can wash and replace products to recycle cooking decomposition products and water liquid, can be used as a carrier to recycle residual heat and residual pressure, and prepares cooking liquor on the basis to generate better energy-saving and environment-friendly effects. The second one consists of water source duct, one-time separated liquid phase hot water duct, washing liquid screening duct, concentrated washing liquid duct, cooking liquid compounding device, cooking liquid duct, etc. Wherein, the water outlet of the water source conduit and the water inlet of the primary separated liquid phase hot water conduit are respectively connected with the water inlet and the water outlet of the primary separated liquid phase waste heat and residual pressure utilization device of the primary separated liquid phase preparation hemicellulose technological equipment; the water outlet of the primary separation liquid phase hot water conduit and the water inlet of the screening washing liquid conduit are respectively connected with the water inlet, the water outlet and the like of the screening cellulose preparation device of the secondary separation solid phase cellulose preparation process equipment; a liquid outlet of the screening washing liquid conduit and a liquid inlet of the washing concentrated liquid conduit are respectively connected with a water inlet, a water outlet and the like of a washing concentrated liquid recovery device of the secondary separation solid phase preparation cellulose technological equipment; the liquid outlet of the washing concentrated liquid guide pipe and the liquid inlet of the cooking liquid medicine guide pipe are respectively connected with the liquid inlet and the liquid outlet of the device for preparing the cooking liquid medicine; the liquid outlet of the cooking liquid medicine conduit is connected with the material heating and secondary hot-pressing phase change decomposition container of the secondary hot-pressing decomposition and hot-pressing separation process equipment to be connected with the cooking liquid medicine inlet.
The condensation water recycling heat source and steam making circulation process equipment is based on the low-salt anti-scaling characteristics of condensation water and the water liquid closed circulation utilization process principle, and aims to recycle condensation water evaporated and condensed in the production process and the secondary separation liquid phase as a hot water supply source and realize water vapor closed circulation and balance through steam heat supply. The second one consists of condensated water duct, cleaning heat source, the first heating and duct, the second liquid phase separating evaporation heating and duct, the heating duct for mixing the liquid medicine, etc. Wherein, the water inlet and the water outlet of the condensed water conduit are respectively connected with the condensed water outlet of the evaporation concentration or crystallization device of the secondary separation liquid phase lignin preparation process equipment and the water inlet of the clean heat source; the primary cooking heat supply and guide pipe steam inlet and outlet are respectively connected with a clean heat source for primary cooking steam outlet and the steam inlet of the primary hot-pressing decomposition and hot-pressing separation process equipment for heating production raw materials and the primary hot-pressing phase-change decomposition container; the secondary cooking heat supply and guide pipe steam inlet and steam outlet are respectively connected with a cleaning heat source for secondary cooking steam outlet and the steam inlet of the secondary hot-pressing decomposition and hot-pressing separation material heating and secondary hot-pressing phase-change decomposition container; the secondary separation liquid phase evaporation heat supply and guide pipe steam inlet and outlet are respectively connected with the clean heat source evaporation heat supply steam outlet and the steam inlet of the evaporation concentration or crystallization device of the secondary separation liquid phase preparation lignin process equipment; the steam inlet and the steam outlet of the heat supply conduit for preparing the cooking liquor are respectively connected with the steam outlet for preparing the cooking liquor by the clean heat source and the steam inlet of the device for preparing the cooking liquor of the process equipment for preparing the secondary cooking liquor by washing the water source.
Furthermore, the agricultural and forestry solid waste three-element co-production and hot pressing cleaning process equipment and the basic contents thereof can also be applied to plant industrial utilization and production activities in other fields.
The invention has the beneficial effects that: the three-element co-production is optimized based on high-valued and high-efficiency raw material treatment of agriculture and forestry solid waste, the hot-pressing cleaning process equipment is developed based on energy-saving and environment-friendly effects and green ecological effects, and the combination and application of the three-element co-production and the hot-pressing cleaning process equipment are beneficial to agricultural rural environment management.
Drawings
FIG. 1 is a schematic view of the agricultural and forestry solid waste three-element co-production and hot pressing cleaning process equipment thereof;
wherein: an agriculture and forestry solid waste room and shed 1, a material grabbing travelling crane 2, a pulverizer 3, an air pipe 4, a particle dust remover 5, a production raw material bin 6, a dust remover 7, a fan 8, a production raw material conveying machine 9, a production raw material heating and hot-pressing phase-change decomposition container 10, a primary heat-preservation pressure-maintaining state decomposition material conveying machine 11, a primary heat-preservation pressure-maintaining state decomposition material solid-liquid separation device 12, a primary separation liquid-phase conveying machine 13, a primary separation solid-phase conveying machine 14, a primary separation liquid-phase waste heat and residual pressure utilization device 15, a hemicellulose preparation device 16, a material heating and hot-pressing phase-change decomposition container 17, a secondary heat-preservation pressure-maintaining state decomposition material conveying machine 18, a secondary heat-preservation pressure-maintaining state decomposition material solid-liquid separation device 19, a secondary separation solid-phase conveying machine 20, a washing and recovering concentrated liquid device 21, a, An evaporation concentration or crystallization device 24, a lignin preparation device 25, a water source conduit 26, a primary separation liquid phase preheating water conduit 27, a screening washing liquid conduit 28, a washing concentrated liquid conduit 29, a cooking liquid medicine preparing device 30, a cooking liquid medicine conduit 31, a condensed water conduit 32, a cleaning heat source 33, a primary cooking heat supply and conduit 34, a secondary cooking heat supply and conduit 35, a secondary separation liquid phase evaporation heat supply and conduit 36 and a cooking liquid medicine preparing heat supply conduit 37.
Detailed description of the invention
The hot-pressing type plant cooking process and equipment of the present invention are further analyzed with reference to fig. 1.
As shown in figure 1, the hot-pressing type plant cooking process and equipment mainly comprise an agriculture and forestry solid waste material room and shed 1, a material grabbing travelling crane 2, a pulverizer 3, an air pipe 4, a particle dust remover 5, a raw material production bin 6, a dust remover 7, a fan 8, a raw material production conveying machine 9, a raw material heating and hot-pressing phase-change decomposition container 10, a primary heat-preservation and pressure-maintaining state decomposition material conveying machine 11, a primary heat-preservation and pressure-maintaining state decomposition material solid-liquid separation device 12, a primary separation liquid-phase conveying machine 13, a primary separation solid-phase conveying machine 14, a primary separation liquid-phase waste heat and excess pressure utilization device 15, a hemicellulose preparation device 16, a material heating and hot-pressing phase-change decomposition container 17, a secondary heat-preservation and pressure-maintaining state decomposition material conveying machine 18, a secondary heat-preservation and pressure-maintaining state decomposition material solid-liquid separation device 19, a secondary separation solid, The device comprises a screening and cellulose preparing device 22, a secondary separation liquid phase conveying machine 23, an evaporation concentration or crystallization device 24, a lignin preparing device 25, a water source guide pipe 26, a primary separation liquid phase preheating water guide pipe 27, a screening washing liquid guide pipe 28, a washing concentrated liquid guide pipe 29, a cooking liquid medicine preparing device 30, a cooking liquid medicine guide pipe 31, a condensed water guide pipe 32, a cleaning heat source 33, a primary cooking heat supply and guide pipe 34, a secondary cooking heat supply and guide pipe 35, a secondary separation liquid phase evaporation heat supply and guide pipe 36 and a cooking liquid medicine preparing heat supply guide pipe 37.
The technical equipment for cleanly preparing the production raw materials by the agricultural and forestry solid wastes has the following implementation modes: agriculture and forestry solid waste between the solid waste material of agriculture and forestry and in canopy 1 are useless admittedly, are input into rubbing crusher 3 by grabbing material driving 2 and are processed the fragmentation back, input granule dust remover 5 through tuber pipe 4 and handle the granule, and rethread tuber pipe 4 inputs raw materials for production storehouse 6 and becomes raw materials for production, then inputs dust remover 7 and fan 8 through tuber pipe 4 and accomplishes dust collection and discharge.
The implementation mode of the one-time hot-pressing decomposition and hot-pressing separation process equipment comprises the following steps: the production raw materials in the production raw material bin 6 are input into a production raw material heating and primary hot-pressing phase-change decomposition container 10, a primary heat-preservation pressure-maintaining state decomposition material conveying machine 11, a primary heat-preservation pressure-maintaining state decomposition material solid-liquid separation device 12 and the like through a production raw material conveying machine 9 for continuous processing, and the primary phase-change decomposition, solid-liquid separation and other process processes of the production raw materials are completed.
The technical equipment for preparing hemicellulose by one-time separation liquid phase comprises the following implementation modes: the primary separated liquid phase is conveyed to a primary separated liquid phase residual heat and residual pressure utilization device 15 and a hemicellulose preparation device 16 through a primary separated liquid phase conveying machine 13 for processing, and hemicellulose-based finished products are obtained.
The implementation mode of the secondary hot-pressing decomposition and hot-pressing separation process equipment is as follows: the primary separated solid phase is input into a raw material heating and secondary hot-pressing phase change decomposition container 17, a secondary heat-preservation pressure-maintaining state decomposition material conveying machine 18 and a secondary heat-preservation pressure-maintaining state decomposition material solid-liquid separation device 19 for continuous processing through a primary separated solid phase conveying machine 14, and the technical processes of secondary phase change decomposition, solid-liquid separation and the like of the material are completed.
The technical equipment for preparing cellulose by the secondary separation solid phase has the following implementation mode: the solid phase separated by the second time is conveyed to a washing and recovering concentrated solution device 21 and a device 22 for screening and preparing cellulose finished products and the like through a second solid phase separating and conveying machine 20, so that cellulose and cellulose base finished products are produced.
The technical equipment for preparing the lignin by the secondary separation liquid phase has the following implementation modes: the secondary separated liquid phase is input into an evaporation concentration or crystallization device 24 and a lignin preparation device 25 for processing and the like through a secondary separated liquid phase conveying machine 23, so that lignin and lignin-based finished products are produced.
The water source washing circulation and cooking liquor preparation process equipment has the following implementation modes: the clear water completes the preparation of the cooking liquid medicine through the technological processes of a water source conduit 26, a primary separation liquid phase preheating water conduit 27, a screening washing liquid conduit 28, a washing concentrated liquid conduit 29, a cooking liquid medicine preparing device 30 and the like, and the cooking liquid medicine is input into the material heating and secondary hot-pressing phase-change decomposition container 17 through a cooking liquid medicine conduit 31 for secondary cooking.
The implementation mode of the condensed water recycling heat source and steam making circulating process equipment is as follows: condensed water generated and recovered by the evaporation concentration or crystallization device 24 is input into a clean heat source 33 through a condensed water conduit 32 to become heat supply steam; the heat supply steam is delivered to the relevant production links of the required steam through a primary cooking heat supply and guide pipe 34, a secondary cooking heat supply and guide pipe 35, a secondary separation liquid phase evaporation heat supply and guide pipe 36, a cooking liquid medicine blending heat supply guide pipe 37 and the like, thereby completing and realizing the water vapor recycling and closed circulation of the production process.
The above description of the embodiments is only for the purpose of helping to understand the method of the present application and its core ideas; for those skilled in the relevant art, variations and local changes in the specific embodiments and applications without affecting the scope of the invention are within the scope of the invention as defined by the appended claims.
Claims (10)
1. The invention relates to a process device for agricultural and forestry solid waste three-element co-production and hot pressing cleaning thereof, which is mainly characterized in that: the method is based on the agricultural and forestry solid waste treatment and the raw material conversion targets of co-producing cellulose, hemicellulose, lignin and the three-element-based products, the process core and equipment integration of the agricultural and forestry solid waste treatment and the hot-pressing phase change decomposition and the hot-pressing solid-liquid separation of the agricultural and forestry solid waste treatment and cooking is constructed, and the clean production and energy-saving and environment-friendly mechanisms of closed production raw materials of agricultural and forestry resources, closed cyclic utilization of process water liquid and the like without sewage and solid waste discharge in the production process are established. And the second step is composed of technological equipment for closed preparation of production raw materials from agricultural and forestry solid wastes, primary hot-pressing decomposition and hot-pressing separation, primary separation of liquid phase to prepare hemicellulose, secondary hot-pressing decomposition and hot-pressing separation, secondary separation of solid phase to prepare cellulose, secondary separation of liquid phase to prepare lignin, water source washing circulation and regulation of cooking liquor, recycling of condensed water as heat source, circulation of heat supply steam and the like.
2. The technical equipment for closed preparation of the production raw materials by the agricultural and forestry solid wastes aims to reduce the air pressure or negative pressure of the agricultural and forestry solid waste treatment space environment to prevent dust pollution, and simultaneously realizes purification of the production raw materials and environment by utilizing wind screening and negative pressure dust removal. The second one consists of agricultural and forestry solid waste material room and shed, material grabbing and traveling crane, crusher, particle dust collector, production material gravity bin, dust collector, blower, etc. Wherein, a material grabbing crane is arranged in the agricultural and forestry solid waste room and the shed, and the air inlets and air outlets of the pulverizer, the particle dust remover, the raw material gravity bin, the dust remover, the fan and the like are connected with each other through air pipes.
3. The first hot-pressing decomposition and hot-pressing separation process equipment mainly adopts a basic process and equipment integration of steam medium, hot-pressing phase change decomposition and hot-pressing solid-liquid separation, and aims to prevent decomposition and separation of hemicellulose by decomposed substances under the production conditions of cold shrinkage and deposition without adding any medicament. The second one consists of material conveying machine, material heating and once hot pressing phase change decomposing container, once decomposed material maintaining and pressure maintaining conveyer, once decomposed material maintaining and pressure maintaining solid-liquid separator, once separated liquid conveyer, once separated solid conveyer, etc. Wherein, the feed inlet and the discharge outlet of the production raw material conveying machine are respectively connected with the discharge outlet of the production raw material gravity bin of the agriculture and forestry solid waste closed preparation production raw material process equipment, the feed inlet of a production raw material heating and primary hot-pressing phase-change decomposition container and the like; the feeding port and the discharging port of the primary decomposed material heat-preservation and pressure-maintaining state conveying machine are respectively connected with the discharging port of the production raw material heating and primary hot-pressing phase-change decomposition container, the feeding port of the primary decomposed material heat-preservation and pressure-maintaining state solid-liquid separation machine and the like; the liquid outlet and the discharge port of the primary decomposition material heat-preservation pressure-maintaining solid-liquid separation equipment are respectively connected with the liquid inlet of the primary separation liquid-phase conveying machine, the feed inlet of the primary separation solid-phase conveying machine and the like.
4. The process equipment for preparing hemicellulose by the primary separation liquid phase is used for recycling waste heat and excess pressure based on the primary separation liquid phase in a high-temperature and high-pressure state and simultaneously preparing the hemicellulose and hemicellulose-based products. The second device mainly comprises a primary separation liquid phase waste heat and residual pressure utilization device, a hemicellulose preparation device and the like. Wherein, a liquid inlet and a liquid outlet of the primary separation liquid phase waste heat and residual pressure utilization device are respectively connected with a liquid outlet of the primary separation liquid phase conveying machine of the primary hot-press decomposition and hot-press separation process equipment and a liquid inlet of the hemicellulose preparation device, and the required hemicellulose and hemicellulose-based products are obtained through the hemicellulose preparation device.
5. The first process of the secondary hot-pressing decomposition and hot-pressing separation process equipment is based on secondary continuous cooking for cracking plant structures and exposing cell walls by primary cooking, and adopts hot-pressing phase change decomposition and hot-pressing solid-liquid separation as basic processes and equipment integration, so that the production process has low consumption effects of low heat, low drug, low time and the like, and decomposed products are prevented from being condensed and deposited. The second one consists of material heating and secondary hot pressing phase change decomposing container, heat and pressure maintaining conveying machine, heat and pressure maintaining solid-liquid separating machine, secondary separating liquid-phase conveying machine, secondary separating solid-phase conveying machine, etc. Wherein, the material heating and secondary hot-pressing phase-change decomposition container feed inlet is connected with the discharge outlet of the primary separation solid-phase conveying machinery of the primary hot-pressing decomposition and hot-pressing separation process equipment; the feeding port and the discharging port of the secondary decomposed material heat-preservation and pressure-maintaining conveying machine are respectively connected with the discharging port of the material heating and secondary hot-pressing phase-change decomposition container, the feeding port of the secondary decomposed material heat-preservation and pressure-maintaining solid-liquid separation machine and the like; the liquid outlet and the discharge port of the secondary decomposition material heat-preservation pressure-maintaining solid-liquid separation machine are respectively connected with the liquid inlet of a secondary separation liquid-phase conveying machine, the feed inlet of a secondary separation solid-phase conveying machine and the like.
6. The process equipment for preparing the cellulose by the secondary separation solid phase comprises the steps of firstly, performing thermal state replacement on other decomposers, washing and screening cellulose products based on waste heat and residual pressure recycling of the high-temperature high-pressure state secondary separation solid phase, and realizing energy-saving and environment-friendly preparation of the cellulose and cellulose-based products. The second one consists of washing, recovering and concentrating device, screening and cellulose preparing device, etc. Wherein, the feed inlet and the discharge outlet of the washing, recovering and concentrating device are respectively connected with the discharge outlet of the secondary separation solid phase conveying machine of the secondary hot-pressing decomposition and hot-pressing separation process equipment, the feed inlet of the cellulose screening and preparing device, and the like, and then the required cellulose and cellulose base products are produced by the cellulose screening and preparing device.
7. According to the technical equipment for preparing the lignin by the secondary separation liquid phase, firstly, the evaporation and multi-effect evaporation are carried out on the secondary separation liquid phase in a high-temperature and high-pressure state so as to save energy and improve efficiency, and the lignin and lignin-based series products are prepared by flexibly selecting modes such as concentration or crystallization according to needs. The second device mainly comprises an evaporation concentration or crystallization device, a lignin preparation device and the like. Wherein, a liquid inlet and a discharge port of the evaporation concentration or crystallization device are respectively connected with a liquid outlet of the secondary separation liquid phase conveying machine of the secondary hot-pressing decomposition and hot-pressing separation process equipment, a feed inlet of the lignin preparation device and the like, and the required lignin and lignin-based products are produced by the lignin preparation device.
8. The water source washing circulation and cooking liquor preparation process equipment utilizes an external water source to wash and replace a product to recycle and reuse cooking decomposition products and water liquid, also utilizes the external water source as a carrier to recycle residual heat and excess pressure, and produces energy-saving and environment-friendly effects when the cooking liquor is prepared by utilizing the external water source and the residual heat and excess pressure. The second one consists of water source duct, one-time separated liquid phase hot water duct, washing liquid screening duct, concentrated washing liquid duct, cooking liquid compounding device, cooking liquid duct, etc. Wherein, the water outlet of the water source conduit and the water inlet of the primary separated liquid phase hot water conduit are respectively connected with the water inlet and the water outlet of the primary separated liquid phase waste heat and residual pressure utilization device of the primary separated liquid phase preparation hemicellulose technological equipment; the water outlet of the primary separation liquid phase hot water conduit and the water inlet of the screening washing liquid conduit are respectively connected with the water inlet, the water outlet and the like of the screening and cellulose preparation device of the secondary separation solid phase cellulose preparation process equipment; a liquid outlet of the screening washing liquid conduit and a liquid inlet of the washing concentrated liquid conduit are respectively connected with a water inlet, a water outlet and the like of a washing recovery and concentrated liquid device of the secondary separation solid phase preparation cellulose technological equipment; the liquid outlet of the washing concentrated liquid guide pipe and the liquid inlet of the cooking liquid medicine guide pipe are respectively connected with the liquid inlet and the liquid outlet of the device for preparing the cooking liquid medicine; the liquid outlet of the cooking liquid medicine conduit is connected with the material heating and secondary hot-pressing phase change decomposition container of the secondary hot-pressing decomposition and hot-pressing separation process equipment to be connected with the cooking liquid medicine inlet.
9. The condensation water recycling heat source and heat supply steam circulation process equipment is based on the low-salt anti-scaling characteristics of condensation water and the water liquid closed circulation utilization process principle, and aims to recycle condensation water evaporated and condensed in the production process and the secondary separation liquid phase as a hot water supply source and realize water vapor closed circulation and balance through steam heat supply. The second one consists of condensated water duct, cleaning heat source, the first heating and duct, the second liquid phase separating evaporation heating and duct, the heating duct for mixing the liquid medicine, etc. Wherein, the water inlet and the water outlet of the condensed water conduit are respectively connected with the condensed water outlet of the evaporation and condensation or crystallization device of the secondary separation liquid phase lignin preparation process equipment and the water inlet of the clean heat source; the primary cooking heat supply and guide pipe steam inlet and outlet are respectively connected with a clean heat source for primary cooking steam outlet and the raw material heating and primary hot-pressing phase-change decomposition container steam inlet of the primary hot-pressing decomposition and hot-pressing separation process equipment; the secondary cooking heat supply and guide pipe steam inlet and outlet are respectively connected with a cleaning heat source for secondary cooking steam outlet and the steam inlet of the secondary hot-pressing decomposition and hot-pressing separation material heating and secondary hot-pressing phase-change decomposition container; the secondary separation liquid phase evaporation heat supply and guide pipe steam inlet and outlet are respectively connected with the clean heat source evaporation heat supply steam outlet and the steam inlet of the evaporation concentration or crystallization device of the secondary separation liquid phase preparation lignin process equipment; the steam inlet and the steam outlet of the heat supply conduit for preparing the cooking liquor are respectively connected with the steam outlet for preparing the cooking liquor by the clean heat source and the steam inlet of the device for preparing the cooking liquor of the water source washing circulation and cooking liquor preparation process equipment.
10. The agricultural and forestry solid waste triad production and hot pressing cleaning process equipment and the basic content thereof according to the claims 1 to 9 can also be applied to plant industrial utilization and production activities thereof in other fields.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010016840.2A CN111187427A (en) | 2020-01-08 | 2020-01-08 | Agricultural and forestry solid waste three-element co-production and hot-pressing cleaning process equipment thereof |
| CN202011086958.9A CN111979821A (en) | 2020-01-08 | 2020-10-12 | Cooking separation hot-pressing method and equipment |
| CN202011086118.2A CN112211023A (en) | 2020-01-08 | 2020-10-12 | Straw three-element method and device by hot pressing method |
| CN202011086149.8A CN112211024A (en) | 2020-01-08 | 2020-10-12 | Hot-pressing method and device for straw combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010016840.2A CN111187427A (en) | 2020-01-08 | 2020-01-08 | Agricultural and forestry solid waste three-element co-production and hot-pressing cleaning process equipment thereof |
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| CN111187427A true CN111187427A (en) | 2020-05-22 |
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| CN202010016840.2A Pending CN111187427A (en) | 2020-01-08 | 2020-01-08 | Agricultural and forestry solid waste three-element co-production and hot-pressing cleaning process equipment thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211023A (en) * | 2020-01-08 | 2021-01-12 | 北京鑫泽清源植物秸杆技术有限公司 | Straw three-element method and device by hot pressing method |
| CN112390448A (en) * | 2020-09-01 | 2021-02-23 | 江西吉润花炮新材料科技有限公司 | Treatment method of nitrified bamboo cellulose alkali cooking wastewater |
-
2020
- 2020-01-08 CN CN202010016840.2A patent/CN111187427A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211023A (en) * | 2020-01-08 | 2021-01-12 | 北京鑫泽清源植物秸杆技术有限公司 | Straw three-element method and device by hot pressing method |
| CN112390448A (en) * | 2020-09-01 | 2021-02-23 | 江西吉润花炮新材料科技有限公司 | Treatment method of nitrified bamboo cellulose alkali cooking wastewater |
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