CN115367730A - Processing technology of biomass powdered carbon for radiant tube shaft furnace - Google Patents
Processing technology of biomass powdered carbon for radiant tube shaft furnace Download PDFInfo
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- CN115367730A CN115367730A CN202210978148.7A CN202210978148A CN115367730A CN 115367730 A CN115367730 A CN 115367730A CN 202210978148 A CN202210978148 A CN 202210978148A CN 115367730 A CN115367730 A CN 115367730A
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- 239000002028 Biomass Substances 0.000 title claims abstract description 105
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 62
- 238000012545 processing Methods 0.000 title claims abstract description 38
- 238000005516 engineering process Methods 0.000 title claims description 12
- 239000000463 material Substances 0.000 claims abstract description 60
- 239000002994 raw material Substances 0.000 claims abstract description 60
- 239000000843 powder Substances 0.000 claims abstract description 35
- 239000003610 charcoal Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000003763 carbonization Methods 0.000 claims abstract description 29
- 238000012216 screening Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 14
- 239000008187 granular material Substances 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims description 55
- 238000005406 washing Methods 0.000 claims description 31
- 238000010438 heat treatment Methods 0.000 claims description 24
- 230000005855 radiation Effects 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 17
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 238000004806 packaging method and process Methods 0.000 claims description 12
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 9
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 229910052700 potassium Inorganic materials 0.000 claims description 9
- 239000011591 potassium Substances 0.000 claims description 9
- 229910052708 sodium Inorganic materials 0.000 claims description 9
- 239000011734 sodium Substances 0.000 claims description 9
- 239000002737 fuel gas Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 8
- 238000010000 carbonizing Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 241001464837 Viridiplantae Species 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 238000010248 power generation Methods 0.000 claims description 4
- 238000000197 pyrolysis Methods 0.000 claims description 4
- 239000002910 solid waste Substances 0.000 claims description 4
- 239000010902 straw Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007777 multifunctional material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a process for processing biomass powdered carbon by a radiant tube shaft furnace, which comprises the following steps: the raw material is simply screened, the prepared raw material is crushed, the crushed granular material is screened by screening equipment, the crushed qualified material is screened out and dried, the crushed qualified material is conveyed to a feeding position of the raw material by a belt conveyor and put into a biomass powder charcoal furnace for carbonization, biomass powder charcoal is washed with water to remove impurities, then is dehydrated, filtered, dried and naturally cooled and then is packaged and warehoused.
Description
Technical Field
The invention relates to the field of biomass charcoal processing, in particular to a biomass powdered charcoal processing technology of a radiant tube shaft furnace.
Background
The biomass energy belongs to clean energy and is renewable, and biomass generates carbon-rich solid matters called biomass charcoal or biochar under the condition of oxygen deficiency or oxygen-free condition to generate carbon-rich solid matters. The biomass charcoal is a porous solid granular substance which is generated by thermochemical conversion of carbon-rich biomass under the condition of no oxygen or lack of oxygen, has high aromaticity and rich carbon, contains a large amount of carbon and plant nutrients, has rich pore structure, large specific surface area and more oxygen-containing active groups on the surface, is a multifunctional material, and can be changed into a multifunctional materialGood soil, increased fertility, adsorption of heavy metals and organic pollutants in soil or sewage, good fixation of carbon and nitrogen, and reduction of CO when applied to soil 2 、 N 2 O、 CH 4 And the emission of greenhouse gases is reduced, and the global warming is slowed down.
The existing biomass powdered carbon production is usually made by carbonizing powdered carbon obtained by burning biomass raw materials, and materials are not uniformly heated in the processing process, the temperature rise speed of furnace materials is low, and the thermal efficiency is low.
Disclosure of Invention
The invention aims to provide a process for processing biomass powdered carbon of a radiant tube shaft furnace, which aims to solve the problems that the conventional biomass powdered carbon production proposed in the background art is generally prepared by carbonizing carbon powder obtained by burning biomass raw materials, the materials are heated unevenly in the processing process, the temperature rise speed of furnace materials is low, and the thermal efficiency is low.
In order to achieve the purpose, the invention provides the following technical scheme: a technology for processing biomass powdered carbon in a radiant tube shaft furnace comprises the following steps:
s1, raw material pretreatment: raw materials comprise various straws, green plant solid wastes and various biomass and wood building templates, the prepared production and processing raw materials are simply screened to remove crushed stones and stone blocky particles doped in the raw materials, and then the raw materials are stacked together;
s2, crushing treatment: crushing the prepared raw materials into particles suitable for processing into biomass powdered carbon by a special crusher, and conveying the crushed raw materials to screening equipment by a belt conveyor;
s3, material screening: screening the granular materials crushed in the step S2 by using screening equipment, screening qualified crushed materials, returning unqualified materials into the crusher for secondary crushing, and repeatedly crushing unqualified materials until the materials meet the requirements of granules suitable for processing;
s4, drying the raw materials: the material screened in the step S3 is put on a chain plate dryer for drying treatment, the moisture contained in the raw material is removed, and then the dried material is conveyed to the feeding position of the raw material by a belt conveyor;
s5, heating and carbonizing: the raw materials at the feeding position are fed into a biomass powder charcoal furnace through vibration equipment for carbonization treatment, the materials are fed into the furnace from the top of the biomass powder charcoal furnace, freely fall downwards by means of self gravity, are gradually heated and heated, the processes of preheating, drying, pyrolysis, biomass powder charcoal and cooling are completed in the furnace, and the fuel gas generated in the material carbonization process is discharged from the lower part of the biomass powder charcoal furnace by an air extractor and is used for radiant tube heating and biomass fuel gas power generation;
s6, washing with water to remove impurities: conveying the biomass powdered carbon subjected to carbonization treatment in the step S5 into a water washing tank through a spiral feeder, washing the biomass powdered carbon with water for a period of time, and washing potassium and sodium components in the carbonized biomass powdered carbon with water;
s7, dewatering and water filtering: dewatering and filtering the washed material, directly discharging the water containing potassium and sodium components discharged after dewatering into a reservoir for other use, and conveying the dewatered biomass powdered carbon to a drying device through a belt conveyor;
s8, drying a finished product: performing primary drying treatment on the dehydrated biomass powdered carbon, standing for a period of time, performing secondary drying, and evaporating residual moisture in the powdered carbon;
s9, natural cooling: standing the biomass powdered carbon subjected to the drying treatment twice in the step S8 for a period of time until the temperature of the surface of the material is reduced;
s10, packaging: and (4) processing the cooled biomass powdered carbon by using bagging mechanical equipment, and finally packaging and warehousing.
As a preferable technical scheme of the present invention, in the step S4, the drying time in the raw material drying is 20-35min, and the raw material is dried to remove moisture in the raw material.
As a preferred technical solution of the present invention, the vibrating device used in the heating carbonization in the step S5 is a vibrating material distributor, and the vibrating material distributor is convenient for feeding the raw materials into the furnace body.
As a preferred technical scheme of the invention, the biomass powder charcoal furnace in the step S5 of heating carbonization is a rectangular shaft furnace, the heat supply bodies are arranged layer by layer along the height direction of the shaft furnace, each layer is provided with a plurality of heat supply bodies, so that the furnace is divided into a plurality of vertical reaction chambers, each heat supply body is composed of a combustion burner, a radiant tube and a control assembly, the combustion burner is arranged in a furnace cavity by depending on a furnace shell, the radiant tube is positioned in the furnace, high-temperature flue gas generated by combustion circulates in the radiant tube and transmits heat to furnace burden through the radiant tube, the radiant tube heats biomass powder falling down freely through radiation, convection and conduction of the furnace burden, the biomass powder charcoal furnace adopts a radiant tube shaft furnace, and the heat supply bodies are arranged, so that the heat supply is more uniform, and the material is heated more quickly.
As a preferred technical scheme of the present invention, the spiral feeder used in the step S6 of washing and impurity removal is a water-cooled auger feeder, and the water-cooled auger feeder facilitates transportation of the biomass powdered carbon after completion of heating.
As a preferable technical scheme of the invention, the time of the water washing treatment in the step S6 of water washing impurity removal is 10-20min, and the water washing enables potassium and sodium components to be fully dissolved in water.
As a preferable technical scheme of the invention, in the step S8, the primary drying time is 30-40min, the secondary drying time is 15-30min, the two-time drying has better drying effect on the finished product materials, and the drying of the materials is ensured.
As a preferable technical scheme of the invention, the time for cooling and standing in the step S9 of natural cooling is 10-30min, the equipment used for bagging in the step S10 of packaging is a bagging machine, the bagging machine is convenient for bagging the biomass powdered carbon, and the working efficiency is improved.
Compared with the prior art, the invention has the beneficial effects that: the raw material pretreatment, crushing treatment, material screening, raw material drying, heating carbonization, washing edulcoration, dewatering filtration, finished product drying, natural cooling and packing, the core carries out carbonization treatment for the biomass powder charcoal stove among the heating carbonization process, the heat supply body of biomass powder charcoal stove is arranged along shaft furnace direction of height successive layer, every layer all sets up a plurality of heat supply body, high heating efficiency, thermally equivalent, furnace burden programming rate is fast, the completion of biomass low temperature carbonization is ended in free fall, synthesize the thermal efficiency height, the calorific value is high, the machining efficiency of biomass powder has been improved.
Drawings
FIG. 1 is a flow chart of the processing technique of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides a process for processing biomass powdered carbon in a radiant tube shaft furnace, which comprises the following steps:
s1, raw material pretreatment: raw materials comprise various straws, green plant solid wastes and various biomass and wood building templates, the prepared production and processing raw materials are simply screened to remove crushed stones and stone blocky particles doped in the raw materials, and then the raw materials are stacked together;
s2, crushing treatment: crushing the prepared raw materials into particles suitable for processing into biomass powdered carbon by a special crusher, and conveying the crushed raw materials to screening equipment by a belt conveyor;
s3, material screening: screening the granular materials crushed in the step (S2) by using screening equipment to screen qualified crushed materials, returning unqualified materials into the crusher to perform secondary crushing processing, and repeatedly crushing the unqualified materials until the unqualified materials meet the requirements of the granules which can be processed suitably;
s4, drying the raw materials: feeding the material screened in the step S3 onto a chain plate dryer for drying treatment, removing moisture contained in the raw material, and conveying the dried material to a feeding position of the raw material by a belt conveyor;
s5, heating and carbonizing: the raw materials at the feeding position are fed into a biomass powder charcoal furnace through vibration equipment for carbonization treatment, the materials are fed into the furnace from the top of the biomass powder charcoal furnace, freely fall downwards by means of self gravity, are gradually heated and heated, the processes of preheating, drying, pyrolysis, biomass powder charcoal and cooling are completed in the furnace, and the fuel gas generated in the material carbonization process is discharged from the lower part of the biomass powder charcoal furnace by an air extractor and is used for radiant tube heating and biomass fuel gas power generation;
s6, washing with water to remove impurities: conveying the biomass powdered carbon subjected to carbonization treatment in the step S5 into a water washing tank through a spiral feeder, washing the biomass powdered carbon with water for a period of time, and washing potassium and sodium components in the carbonized biomass powdered carbon with water;
s7, dewatering and water filtering: dewatering and filtering the washed material, directly discharging the water containing potassium and sodium components discharged after dewatering into a reservoir for other use, and conveying the dewatered biomass powdered carbon to a drying device through a belt conveyor;
s8, drying a finished product: performing primary drying treatment on the dehydrated biomass powdered carbon, standing for a period of time, performing secondary drying, and evaporating residual moisture in the powdered carbon;
s9, natural cooling: standing the biomass powdered carbon subjected to the drying treatment twice in the step S8 for a period of time until the temperature of the surface of the material is reduced;
s10, packaging: and (4) processing the cooled biomass powdered carbon by using bagging mechanical equipment, and finally packaging and warehousing.
And S4, drying the raw materials for 30min, and using a vibrating device in the heating carbonization in the S5 as a vibrating distributor.
S5, the biomass powder charcoal furnace in the heating carbonization process is a rectangular shaft furnace, the heat supply bodies are arranged layer by layer along the height direction of the shaft furnace, each layer is provided with a plurality of heat supply bodies, the furnace is divided into a plurality of vertical reaction chambers, each heat supply body is composed of a combustion burner, a radiation pipe and a control assembly, the combustion burner is mounted in a furnace wall by depending on a furnace shell, the radiation pipe is positioned in the furnace, high-temperature smoke generated by combustion circulates in the radiation pipe and transfers heat to furnace charge through the radiation pipe, and the radiation pipe heats biomass powder falling from the furnace charge through radiation, convection and conduction.
The spiral feeder used in the washing impurity removal in the step S6 is a water-cooled auger feeder, the washing treatment time in the washing impurity removal in the step S6 is 20min, the primary drying time in the drying of the finished product in the step S8 is 40min, the secondary drying time is 30min, the cooling and standing time in the natural cooling in the step S9 is 20min, and the bagging machine is used as equipment for bagging treatment in the packaging in the step S10.
Example 2:
the invention provides a process for processing biomass powdered carbon in a radiant tube shaft furnace, which comprises the following steps:
s1, raw material pretreatment: raw materials comprise various straws, green plant solid wastes and various biomass and wood building templates, the prepared production and processing raw materials are simply screened to remove crushed stones and stone blocky particles doped in the raw materials, and then the raw materials are stacked together;
s2, crushing treatment: crushing the prepared raw materials into particles suitable for processing into biomass powdered carbon by a special crusher, and conveying the crushed raw materials to screening equipment by a belt conveyor;
s3, material screening: screening the granular materials crushed in the step S2 by using screening equipment, screening qualified crushed materials, returning unqualified materials into the crusher for secondary crushing, and repeatedly crushing unqualified materials until the materials meet the requirements of granules suitable for processing;
s4, drying the raw materials: the material screened in the step S3 is put on a chain plate dryer for drying treatment, the moisture contained in the raw material is removed, and then the dried material is conveyed to the feeding position of the raw material by a belt conveyor;
s5, heating and carbonizing: the raw materials at the feeding position are fed into a biomass powder charcoal furnace through vibration equipment for carbonization treatment, the materials are fed into the furnace from the top of the biomass powder charcoal furnace, freely fall downwards by means of the gravity of the materials, are gradually heated and heated, and are subjected to preheating, drying, pyrolysis, biomass powder charcoal and cooling in the furnace, and the fuel gas generated in the carbonization process of the materials is discharged from the lower part of the biomass powder charcoal furnace by using an air extractor and is used for radiant tube heating and biomass fuel gas power generation;
s6, washing with water to remove impurities: conveying the biomass powdered carbon subjected to carbonization treatment in the step S5 into a water washing tank through a spiral feeder, washing the biomass powdered carbon with water for a period of time, and washing potassium and sodium components in the carbonized biomass powdered carbon with water;
s7, dewatering and water filtering: dewatering and filtering the washed material, directly discharging the water containing potassium and sodium components discharged after dewatering into a reservoir for other use, and conveying the dewatered biomass powdered carbon to a drying device through a belt conveyor;
s8, drying a finished product: performing primary drying treatment on the dehydrated biomass powdered carbon, standing for a period of time, performing secondary drying, and evaporating residual moisture in the powdered carbon;
s9, natural cooling: standing the biomass powdered carbon subjected to the drying treatment twice in the step S8 for a period of time until the temperature of the surface of the material is reduced;
s10, packaging: and (4) processing the cooled biomass powdered carbon by using bagging mechanical equipment, and finally packaging and warehousing.
And S4, drying the raw materials for 20min, and using a vibrating device in the heating carbonization in the S5 as a vibrating distributor.
S5, the biomass powder charcoal furnace in heating carbonization is a rectangular shaft furnace, the heat supply bodies are arranged layer by layer along the height direction of the shaft furnace, each layer is provided with a plurality of heat supply bodies, so that the furnace is divided into a plurality of vertical reaction chambers, each heat supply body comprises a combustion burner, a radiation pipe and a control assembly, the combustion burner is arranged in a furnace wall by depending on a furnace shell, the radiation pipe is positioned in the furnace, high-temperature flue gas generated by combustion circulates in the radiation pipe and transfers heat to furnace charge through the radiation pipe, and the radiation pipe heats biomass powder falling freely through radiation, convection and conduction of the furnace charge.
The spiral feeder used in the washing impurity removal in the step S6 is a water-cooled auger feeder, the washing treatment time in the washing impurity removal in the step S6 is 15min, the primary drying time in the drying of the finished product in the step S8 is 30min, the secondary drying time is 15min, the cooling and standing time in the natural cooling in the step S9 is 10min, and the bagging machine is used as equipment for bagging treatment in the packaging in the step S10.
According to the invention, raw material pretreatment, crushing treatment, material screening, raw material drying, heating carbonization, washing impurity removal, dehydration water filtration, finished product drying, natural cooling and packaging are sequentially carried out, the core is a biomass powder charcoal furnace for carbonization treatment in the heating carbonization process, heat supplying bodies (namely a radiant tube burner) of the biomass powder charcoal furnace are arranged layer by layer along the height direction of a shaft furnace, each layer is provided with a plurality of heat supplying bodies, the radiant tube heats biomass powder descending in a free falling body through radiation, convection and conduction furnace burden, the heating efficiency is high, the furnace burden heating speed is high, when the free falling body is finished, biomass low-temperature carbonization is completed, the biomass powder charcoal efficiency in the production and processing process is high, the comprehensive thermal efficiency is high, the thermal value is high, the production scale is large, and the processing efficiency of the biomass powder is improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes, modifications, equivalents and improvements can be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. A technology for processing biomass powdered carbon in a radiant tube shaft furnace is characterized by comprising the following steps:
s1, raw material pretreatment: raw materials comprise various straws, green plant solid wastes and various biomass and wood building templates, the prepared production and processing raw materials are simply screened to remove crushed stones and stone blocky particles doped in the raw materials, and then the raw materials are stacked together;
s2, crushing treatment: crushing the prepared raw materials into particles suitable for processing into biomass powdered carbon by a special crusher, and conveying the crushed raw materials to screening equipment by a belt conveyor;
s3, material screening: screening the granular materials crushed in the step (S2) by using screening equipment to screen qualified crushed materials, returning unqualified materials into the crusher to perform secondary crushing processing, and repeatedly crushing the unqualified materials until the unqualified materials meet the requirements of the granules which can be processed suitably;
s4, drying the raw materials: the material screened in the step S3 is put on a chain plate dryer for drying treatment, the moisture contained in the raw material is removed, and then the dried material is conveyed to the feeding position of the raw material by a belt conveyor;
s5, heating and carbonizing: the raw materials at the feeding position are fed into a biomass powder charcoal furnace through vibration equipment for carbonization treatment, the materials are fed into the furnace from the top of the biomass powder charcoal furnace, freely fall downwards by means of the gravity of the materials, are gradually heated and heated, and are subjected to preheating, drying, pyrolysis, biomass powder charcoal and cooling in the furnace, and the fuel gas generated in the carbonization process of the materials is discharged from the lower part of the biomass powder charcoal furnace by using an air extractor and is used for radiant tube heating and biomass fuel gas power generation;
s6, washing with water to remove impurities: conveying the biomass powdered carbon subjected to carbonization treatment in the step S5 into a water washing tank through a spiral feeder, washing the biomass powdered carbon with water for a period of time, and washing potassium and sodium components in the carbonized biomass powdered carbon with water;
s7, dewatering and water filtering: dewatering and draining the washed material, directly discharging the water containing potassium and sodium components discharged after dewatering into a reservoir for other use, and conveying the dewatered biomass powdered carbon to a drying device through a belt conveyor;
s8, drying a finished product: performing primary drying treatment on the dehydrated biomass powdered carbon, standing for a period of time, performing secondary drying, and evaporating residual moisture in the powdered carbon;
s9, natural cooling: standing the biomass powdered carbon subjected to the drying treatment twice in the step S8 for a period of time until the temperature of the surface of the material is reduced;
s10, packaging: and (4) processing the cooled biomass powdered carbon by using bagging mechanical equipment, and finally packaging and warehousing.
2. The radiant tube shaft furnace biomass powdered carbon processing technology as claimed in claim 1, characterized in that: and in the step S4, the drying time in the drying of the raw materials is 20-35min.
3. The radiant tube shaft furnace biomass powdered carbon processing technology as claimed in claim 1, characterized in that: and the vibration equipment used in the heating carbonization in the step S5 is a vibration material distributor.
4. The radiant tube shaft furnace biomass powdered carbon processing technology as claimed in claim 1, characterized in that: and S5, the biomass powder charcoal furnace in the heating carbonization is a rectangular shaft furnace, the heat supply bodies are arranged layer by layer along the height direction of the shaft furnace, a plurality of heat supply bodies are arranged on each layer, the furnace is divided into a plurality of vertical reaction chambers, each heat supply body is composed of a combustion burner, a radiation pipe and a control assembly, the combustion burner is mounted in a furnace cavity by depending on a furnace shell, the radiation pipe is positioned in the furnace, high-temperature smoke generated by combustion circulates in the radiation pipe and transfers heat to furnace charge through the radiation pipe, and the radiation pipe heats biomass powder falling down in a free falling body through radiation, convection and conduction of the furnace charge.
5. The radiant tube shaft furnace biomass powdered carbon processing technology as claimed in claim 1, characterized in that: and the spiral feeder used in the washing impurity removal in the step S6 is a water-cooled auger feeder.
6. The radiant tube shaft furnace biomass powdered carbon processing technology as claimed in claim 1, characterized in that: and in the step S6, the time of water washing treatment in the water washing impurity removal is 10-20min.
7. The radiant tube shaft furnace biomass powdered carbon processing technology as claimed in claim 1, characterized in that: in the step S8, the primary drying time is 30-40min, and the secondary drying time is 15-30min.
8. The radiant tube shaft furnace biomass powdered carbon processing technology as claimed in claim 1, characterized in that: and the time for cooling and standing in the step S9 is 10-30min, and the equipment used for bagging treatment in the step S10 is a bagging machine.
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