CN112251268A - Composite biomass particles and production method thereof - Google Patents
Composite biomass particles and production method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/48—Solid fuels essentially based on materials of non-mineral origin on industrial residues and waste materials
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/442—Wood or forestry waste
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/445—Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/447—Carbonized vegetable substances, e.g. charcoal, or produced by hydrothermal carbonization of biomass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- 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
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention relates to a composite biomass particle and a production method thereof, comprising the following steps of crushing traditional Chinese medicine dregs to obtain dregs powder; uniformly mixing the decoction dreg powder and a phosphoric acid solution in proportion to form a mixture, carrying out hydrothermal reaction to form hydrothermal carbon, and dehydrating and drying to obtain decoction dreg biomass carbon; crushing the wood chips, the straws, the bamboo charcoal and the rice hull biomass into biomass powder; mixing titanium slag with an acidic aqueous solution, and sequentially filtering and evaporating to obtain a titanium slag solid; uniformly mixing the dregs of a decoction, the biomass charcoal, the biomass powder and the titanium slag solid according to a ratio to obtain a mixture; compressing and compacting the mixture to obtain composite biomass particles; the production method provided by the invention can utilize waste, protect the environment, simultaneously meet the effects of high calorific value, low ash content, high strength, difficulty in deformation, mildew resistance, moisture resistance and low smoke, and has comprehensive performance far higher than that of the traditional particles beneficial to biomass production.
Description
Technical Field
The invention belongs to the technical field of biomass energy, and particularly relates to a composite biomass particle and a production method thereof.
Background
Energy is the foundation of the modern society relying on survival and development, and is one of the foundations of national strategic safety guarantee, and the current energy supply situation of China is severe and the environmental pressure is heavy; because fossil energy reserves are reduced day by day, and the damage and pollution to the ecological environment are not negligible, the development of clean renewable energy sources becomes an urgent subject for future development in China. Therefore, new energy industries represented by biomass energy present rapid development situation and will become important alternative energy sources in the future. The search for biomass energy raw materials which have large reserves, little environmental pollution and can be recycled becomes important work content of the future energy industry. In recent years, the resource economy industry characterized by consumption of traditional Chinese medicine and natural medicine resources in China has been rapidly developed; according to preliminary statistics, about 70 million tons of plant medicines are consumed annually in the traditional Chinese medicine resource industrialization process taking traditional Chinese medicine pharmacy as a main body, the generated waste tissues and organs, waste residues and the like reach millions of tons, the discharge and treatment of the traditional Chinese medicine waste residues become the troublesome problems in the development of the industry, great pressure is brought to the ecological environment, how to effectively and reasonably synthesize and recycle the medicine residues and ensure that the medicine residues do not pollute the environment, and better serving the human health becomes the problem to be considered and solved urgently in the whole society; research shows that the traditional Chinese medicine dregs generated in the traditional Chinese medicine pharmaceutical industry contain a large amount of carbon source substances such as cellulose, hemicellulose and the like, and are ideal biomass energy raw materials; therefore, the development of the biomass fuel based on the traditional Chinese medicine dregs can not only effectively consume a large amount of dregs of a decoction wastes generated in the traditional Chinese medicine preparation process and reduce the environmental bearing pressure, but also realize the cyclic utilization of resources and the sustainable development of the traditional Chinese medicine industry, and has higher social and economic benefits.
Disclosure of Invention
In order to solve the problems, the invention achieves the purposes through the following technical scheme:
a method for producing high-efficiency clean biomass particles comprises the following steps,
comprises the following steps of (a) carrying out,
step one, preparation of herb residue biomass charcoal:
crushing: firstly, crushing traditional Chinese medicine dregs to obtain dregs powder;
preparing carbon: uniformly mixing the medicine residue powder and a phosphoric acid solution in proportion to form a mixture, and carrying out hydrothermal reaction to form hydrothermal carbon;
thirdly, drying: dehydrating and drying the hydrothermal carbon obtained after the hydrothermal reaction to obtain dregs of a decoction, namely biomass carbon;
step two, preparing biomass carbon powder: crushing wood chips, straws, bamboo charcoal and rice hull biomass into biomass powder;
step three, titanium slag treatment:
mixing titanium slag and an acidic aqueous solution, and filtering solid waste slag to obtain a filtrate;
secondly, neutralizing the filtrate with lime milk, filtering and evaporating to obtain titanium slag solids;
step four, mixing: uniformly mixing the biomass charcoal, the biomass powder and the titanium slag solid obtained in the steps in proportion to obtain a mixture;
step five, granulating: and (3) compressing and compacting the mixture to obtain the composite biomass particles.
As a further optimized scheme of the invention, the traditional Chinese medicine dregs are single medicine dregs or traditional Chinese medicine compound dregs.
As a further optimization scheme of the invention, the mixing ratio of the phosphoric acid solution and the medicine residue powder in the first step is controlled to be between 0.1:1 and 5:1 according to the phosphorus/carbon mass ratio.
As a further optimization scheme of the invention, the temperature of the hydrothermal reaction is 70-300 ℃, and the time of the hydrothermal reaction is 1-24 h.
As a further optimization scheme of the invention, camphor wood chips are adopted as the wood chips, and high-temperature superheated steam treatment is required after crushing.
As a further optimization scheme of the invention, the bamboo charcoal is pretreated in the second step, namely the bamboo charcoal is put into an ethanol water solution, is stirred for 60min, is filtered and dried, and is then mixed with the wood chips, the straws and the rice hull biomass.
As a further optimization scheme of the invention, the biomass charcoal of the medicine residue, the biomass powder and the solid titanium slag in the fourth step are uniformly mixed according to the mixing mass ratio of 20:5: 1.
A biomass particle prepared by a composite biomass particle production method.
The invention has the beneficial effects that:
1) the production method can produce composite biomass fuel particles with excellent comprehensive performance, can simultaneously meet the effects of high calorific value, low ash content, high strength, difficult deformation, mildew resistance, moisture resistance and low smoke while performing waste utilization and protecting the environment, and has the comprehensive performance far higher than the traditional particles beneficial to biomass production;
2) the specific biomass powder and the titanium slag are complemented, so that the performance of the composite biomass particles is better improved.
Drawings
FIG. 1 is a flow chart of a method for producing composite biomass particles according to the present invention;
Detailed Description
The present application is described in further detail below, and it should be noted that the following detailed description is provided for illustrative purposes only, and is not intended to limit the scope of the present application, which is defined by the appended claims.
Example 1
A composite biomass particle and a production method thereof comprise the following steps:
step one, preparation of herb residue biomass charcoal:
crushing: firstly, crushing traditional Chinese medicine dregs to obtain dregs powder; wherein the traditional Chinese medicine residue can be single medicinal residue or traditional Chinese medicine compound residue;
preparing carbon: uniformly forming a mixture by controlling the mass ratio of phosphorus to carbon between 0.1:1 and 5:1 of the medicine residue powder and the phosphoric acid solution, controlling the temperature of hydrothermal reaction to be 70-300 ℃ and the time of hydrothermal reaction to be 1-24 h, and carrying out hydrothermal reaction to form hydrothermal carbon;
thirdly, drying: dehydrating and drying the hydrothermal carbon obtained after the hydrothermal reaction, and controlling the water content of the hydrothermal carbon to be 12% -15% to obtain herb residue biomass carbon;
step two, preparing biomass carbon powder: crushing wood chips, straws, bamboo charcoal and rice hull biomass into biomass powder;
the wood chips are preferably camphor wood chips, and are subjected to high-temperature superheated steam treatment at the temperature of 500-600 ℃ after being crushed, and are cooled to 70-80 ℃ after being subjected to superheated steam treatment, and then are mixed with straw, bamboo charcoal and rice hull biomass; the camphor wood chips have the moisture-proof and mildew-proof effects, meanwhile, the camphor wood chips are rich in grease which is beneficial to combustion, the activity and the cementing property of the camphor wood chips are improved by carrying out high-temperature superheated steam treatment on the camphor wood chips, the camphor wood chips can be tightly adhered with other materials in fuel, so that the granular fuel is easier to form, and the combustion stability of the fuel is ensured;
meanwhile, the bamboo charcoal is put into an ethanol water solution, is stirred for 60min and then is filtered and dried, and the bamboo charcoal has the antibacterial and mildewproof effects and a loose porous structure, so that the peculiar smell generated by burning camphor wood chips can be reduced. In the preparation process, the volume and porosity of bamboo charcoal pores can be increased by utilizing ethanol vaporization expansion, so that camphor wood powder, titanium slag solid powder and other powder can be favorably diffused among layers and loaded on the layers;
step three, titanium slag treatment:
mixing titanium slag and an acidic aqueous solution, and filtering solid waste slag to obtain a filtrate;
secondly, neutralizing the filtrate with lime milk, filtering and evaporating to obtain titanium slag solids;
a large amount of titanium slag produced by a chlorination process is generated while titanium dioxide is produced, and the titanium slag contains titanium dioxide, petroleum coke and calcium chloride, wherein the titanium dioxide is a photocatalytic antibacterial agent, and can form a protective film on the surface of a material, so that the absorption of water is reduced, carbon formation is promoted during combustion, carbon residue is protected, and the combustion time is prolonged; the petroleum coke has high heat value, less ash content and low water content, and is suitable for use as fuel. The calcium chloride consumes low energy in the compression process and has good hydrophobicity, and meanwhile, the mechanical strength and the combustion performance of the particles are enhanced;
step four, mixing: uniformly mixing the biomass charcoal, the biomass powder and the titanium slag solid obtained in the steps according to the mixing mass ratio of 20:5:1, and uniformly mixing to obtain a mixture;
step five, granulating: and (3) compressing and compacting the mixture to obtain the composite biomass particles.
The traditional Chinese medicine dregs contain a large amount of carbon source substances such as cellulose and hemicellulose, and the phosphoric acid is a medium-strength protonic acid, so that hydrolysis of high-glycan such as cellulose can be remarkably promoted to form oligosaccharide or monosaccharide products, and then the oligosaccharide or monosaccharide products permeate into a biomass structure to generate an activation effect, and the phosphoric acid can catalyze dehydration of the high-glycan and the high-glycan products; in the best hydrothermal reaction, the pressure of the water vapor in the reaction kettle reaches 15Mpa, so that the hydrolysis and dehydration reaction of the high polysaccharide of the biomass can be promoted, the phosphoric acid can enter the biomass, the performance and the yield of the biomass charcoal are improved, more phosphoric acid can exist in the form of protonic acid due to the water vapor in the reaction kettle, the condensation reaction among phosphoric acid molecules is reduced, and the amount of the phosphoric acid required by activation is reduced;
hydrothermal carbon obtained by carrying out hydrothermal reaction on the decoction dregs is close to peat and lignite in quality in terms of energy density, and can be directly combusted as a composite solid fuel;
the biomass charcoal is added into the dregs of a decoction biomass charcoal, so that on one hand, the heat value of the whole composite biomass solid fuel is improved, the composite biomass solid fuel is combusted more fully, the dust deposition in the combustion process of the biomass solid fuel is reduced, and the emission of harmful substances is reduced; on the other hand, because the titanium slag is mixed in the biomass solid fuel, and the ignition temperature of petroleum coke in the titanium slag is relatively high, the wood chips, the crop straws and the rice hull powder with low ignition temperature need to be added, so that the ignition point and the burnout temperature of the fuel can be effectively reduced;
the finally produced composite biomass particles not only have high heat value, but also enable the particle fuel to be not easy to deform through the cementing property of camphor wood chips, and the bamboo charcoal loaded in the composite biomass particles can also play a role in adsorbing certain combustion peculiar smell during combustion, so that the emission of smoke and peculiar smell is slowed down, and the smoke is further combusted at high temperature; the smoke emission is reduced;
the titanium dioxide and the camphor wood chips can reduce moisture absorption and damp-proof effects, and after moisture is reduced, the growth environment of mould is damaged, so that the possibility of peculiar smell generated during fuel use is reduced;
by adopting the method, the composite biomass fuel particles with excellent comprehensive performance can be produced, the effects of high calorific value, low ash content, high strength, difficult fracture, mildew resistance, moisture resistance and low smoke can be simultaneously met while the waste is utilized and the environment is protected, and the comprehensive performance is far higher than that of the traditional particles which are beneficial to biomass production.
Comparative example 1
A composite biomass particle and a production method thereof comprise the following steps:
step one, preparation of herb residue biomass charcoal:
crushing: firstly, crushing traditional Chinese medicine dregs to obtain dregs powder;
preparing carbon: uniformly forming a mixture by controlling the mass ratio of phosphorus to carbon between 0.1:1 and 5:1 of the medicine residue powder and the phosphoric acid solution, controlling the temperature of hydrothermal reaction to be 70-300 ℃ and the time of hydrothermal reaction to be 1-24 h, and carrying out hydrothermal reaction to form hydrothermal carbon;
thirdly, drying: dehydrating and drying the hydrothermal carbon obtained after the hydrothermal reaction, and controlling the water content of the hydrothermal carbon to be 12% -15% to obtain herb residue biomass carbon;
step two, granulation: compressing, compacting and molding the dregs of a decoction with biomass charcoal to obtain biomass particles.
Comparative example 2
A composite biomass particle and a production method thereof comprise the following steps:
step one, preparation of herb residue biomass charcoal:
crushing: firstly, crushing traditional Chinese medicine dregs to obtain dregs powder;
preparing carbon: uniformly forming a mixture by controlling the mass ratio of phosphorus to carbon between 0.1:1 and 5:1 of the medicine residue powder and the phosphoric acid solution, controlling the temperature of hydrothermal reaction to be 70-300 ℃ and the time of hydrothermal reaction to be 1-24 h, and carrying out hydrothermal reaction to form hydrothermal carbon;
thirdly, drying: dehydrating and drying the hydrothermal carbon obtained after the hydrothermal reaction, and controlling the water content of the hydrothermal carbon to be 12% -15% to obtain herb residue biomass carbon;
step two, titanium slag treatment:
mixing titanium slag and an acidic aqueous solution, and filtering solid waste slag to obtain a filtrate;
secondly, neutralizing the filtrate with lime milk, filtering and evaporating to obtain titanium slag solids;
step three, mixing: uniformly mixing the biomass charcoal of the medicine slag and the solid titanium slag respectively obtained in the steps according to the mixing mass ratio of 20:1, and uniformly mixing to obtain a mixture;
step four, granulating: and (3) compressing and compacting the mixture to obtain the composite biomass particles.
Comparative example 3
A composite biomass particle and a production method thereof comprise the following steps:
step one, preparation of herb residue biomass charcoal:
crushing: firstly, crushing traditional Chinese medicine dregs to obtain dregs powder;
preparing carbon: uniformly forming a mixture by controlling the mass ratio of phosphorus to carbon between 0.1:1 and 5:1 of the medicine residue powder and the phosphoric acid solution, controlling the temperature of hydrothermal reaction to be 70-300 ℃ and the time of hydrothermal reaction to be 1-24 h, and carrying out hydrothermal reaction to form hydrothermal carbon;
thirdly, drying: dehydrating and drying the hydrothermal carbon obtained after the hydrothermal reaction, and controlling the water content of the hydrothermal carbon to be 12% -15% to obtain herb residue biomass carbon;
step two, preparing biomass carbon powder: smashing camphor wood chips, straws, bamboo charcoal and rice hull biomass into biomass powder; wherein, the camphor wood chips are crushed and then subjected to high-temperature superheated steam treatment at the temperature of 500-600 ℃, cooled to 70-80 ℃ after being subjected to superheated steam treatment, and then mixed with straw, bamboo charcoal and rice hull biomass;
step three, mixing: uniformly mixing the biomass charcoal, the biomass powder and the titanium slag solid obtained in the steps according to the mixing mass ratio of 20:5, and uniformly mixing to obtain a mixture;
step four, granulating: and (3) compressing and compacting the mixture to obtain the composite biomass particles.
After being treated by the same strain culture solution, the biomass granular fuels of example 1, comparative example 2 and comparative example 3 are placed at the temperature of 25 ℃ and the moisture content under the humidity of RH 68% for testing, and are tested according to GB/T18261-2000 to suffer from mildew after aspergillus niger is impregnated for 4 weeks, and the test results are shown in Table 1;
after the detection, burning is carried out under the same burning standard; the biomass solid fuels of example 1, comparative example 2 and comparative example 3 were tested for calorific value, and the specific test results are shown in table 1;
table 1: test result tables of example 1, comparative example 2, and comparative example 3
| Calorific value (kJ/kg) | Moisture content/%) | Antibacterial mildew resistance% | Percent formation rate% | |
| Example 1 | 18965 | 9.4 | 98.2 | 98.5 |
| Comparative example 1 | 14862 | 32.5 | 76.9 | 95.3 |
| Comparative example 2 | 18452 | 10..8 | 92..6 | 98.2 |
| Comparative example 3 | 17764 | 12.1 | 89.8 | 96.7 |
Tests show that the calorific value of the heat-generating material in example 1 is obviously improved compared with that in comparative example 1, and the calorific value of the heat-generating material in example 1 is also improved to a certain extent compared with that in comparative example 2 and comparative example 3; the result shows that the calorific value of the biomass solid fuel can be effectively improved by adding the biomass charcoal into the dregs of decoction biomass charcoal;
in addition, compared with the comparative example 1, the moisture content and the antibacterial and mildewproof rate of the embodiment 1 are greatly improved, meanwhile, compared with the comparative example 2 and the comparative example 3, the moisture content and the antibacterial and mildewproof rate are improved to a certain extent, and the comparative example 2 and the comparative example 3 are also improved compared with the comparative example 1, so that the moisture reducing and moistureproof effects can be achieved by the titanium dioxide in the camphor wood chips and the titanium slag, and the growth environment of the mildews is damaged after the moisture is reduced; and after the two are combined together for use, the lifting device can further play a role in lifting.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. A production method of composite biomass particles is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
step one, preparation of herb residue biomass charcoal:
crushing: firstly, crushing traditional Chinese medicine dregs to obtain dregs powder;
preparing carbon: uniformly mixing the medicine residue powder and a phosphoric acid solution in proportion to form a mixture, and carrying out hydrothermal reaction to form hydrothermal carbon;
thirdly, drying: dehydrating and drying the hydrothermal carbon obtained after the hydrothermal reaction to obtain dregs of a decoction, namely biomass carbon;
step two, preparing biomass powder: crushing wood chips, straws, bamboo charcoal and rice hull biomass into biomass powder;
step three, titanium slag treatment:
mixing titanium slag and an acidic aqueous solution, and filtering solid waste slag to obtain a filtrate;
secondly, neutralizing the filtrate with lime milk, filtering and evaporating to obtain titanium slag solids;
step four, mixing: uniformly mixing the biomass charcoal, the biomass powder and the titanium slag solid obtained in the steps in proportion to obtain a mixture;
step five, granulating: and (3) compressing and compacting the mixture to obtain the composite biomass particles.
2. The method for producing composite biomass particles according to claim 1, wherein the method comprises the following steps: the traditional Chinese medicine dregs are single medicine dregs or traditional Chinese medicine compound dregs.
3. The method for producing composite biomass particles according to claim 1, wherein the method comprises the following steps: in the first step, the mixing ratio of the phosphoric acid solution and the medicine residue powder is controlled to be between 0.1:1 and 5:1 according to the phosphorus/carbon mass ratio.
4. The method for producing composite biomass particles according to claim 3, wherein the method comprises the following steps: the temperature of the hydrothermal reaction is 70-300 ℃, and the time of the hydrothermal reaction is 1-24 h.
5. The method for producing composite biomass particles according to claim 1, wherein the method comprises the following steps: the wood chips are camphor wood chips, and high-temperature superheated steam treatment is carried out after crushing.
6. The method for producing composite biomass particles according to claim 5, wherein the method comprises the following steps: the temperature of the camphor wood chips subjected to high-temperature superheated steam treatment is 500-600 ℃, the camphor wood chips are cooled to 70-80 ℃ after the superheated steam treatment, and then the camphor wood chips are mixed with straw, bamboo charcoal and rice hull biomass.
7. The method for producing composite biomass particles according to claim 1, wherein the method comprises the following steps: and step two, preprocessing the bamboo charcoal, namely putting the bamboo charcoal into an ethanol water solution, stirring for 60min, filtering, drying, and mixing with wood chips, straws and rice hull biomass.
8. The method for producing composite biomass particles according to claim 1, wherein the method comprises the following steps: in the fourth step, the biomass charcoal of the medicine slag, the biomass powder and the solid titanium slag are uniformly mixed according to the mixing mass ratio of 20:5: 1.
9. A biomass particle produced by the method for producing composite biomass particles according to any one of claims 1 to 8.
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