CN109097147A - A kind of mud granule fuel and preparation method thereof - Google Patents
A kind of mud granule fuel and preparation method thereof Download PDFInfo
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- CN109097147A CN109097147A CN201811070608.6A CN201811070608A CN109097147A CN 109097147 A CN109097147 A CN 109097147A CN 201811070608 A CN201811070608 A CN 201811070608A CN 109097147 A CN109097147 A CN 109097147A
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- fuel
- sludge
- auxiliary fuel
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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
- C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
-
- 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
-
- 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
-
- 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
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
-
- 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
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
-
- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
-
- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/24—Mixing, stirring of fuel components
-
- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/28—Cutting, disintegrating, shredding or grinding
-
- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/32—Molding or moulds
-
- 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
-
- 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 discloses a kind of mud granule fuel and preparation method thereof.Mud granule fuel, including dry sludge, auxiliary fuel and modified additive, wherein the mass percent of dry sludge is 47% ~ 77%, the mass percent of auxiliary fuel is 20% ~ 50%, and the mass percent of modified additive is 3% ~ 5%.Auxiliary fuel includes sawdust, sawdust or any one or more of mixture of stalk.The moisture content of dry sludge is less than 30%.Modified additive selects lignin modification additive.By the dry sludge of the dry acquisition of dewatered sludge, auxiliary fuel is crushed to 10mm hereinafter, plus compression forming after the modified additive mixing of configuration.The present invention will be mixed with sewage sludge biomass hybrid particles fuel as the energy with biomass and use after drying sludge, not only take full advantage of the calorific value of sludge, but also the cost of Treatment of Sludge is effectively reduced, and be the effective way for realizing sewage sludge harmlessness, recycling.
Description
Technical field
The present invention relates to a kind of mud granule fuel and preparation method thereof, belong to the solid waste processing skill of environment protection field
Art field.
Background technique
The moisture percentage in sewage sludge that urban wastewater treatment firm generates is high (75%~99%), and high organic content is perishable.In sludge
Containing the organic matter with potential utility value, nitrogen, phosphorus, potassium and various microelements, parasitic ovum, pathogenic microorganism etc. cause a disease
Substance, the poisonous and harmful substance difficult to degrade such as the heavy metals such as copper, zinc, chromium and Polychlorinated biphenyls, dioxin, if do not dealt carefully with, easily
Cause secondary pollution.
On the one hand in order to achieve the purpose that utmostly minimizing and innoxious specific resistance to filtration, on the other hand for benefit
Recycling is realized with the organic matter in sludge, at present 1) processing of sludge is increasingly prone to sludge stabilizing and dehydration
Afterwards or sludge composting or heat drying particle carry out land use；2) it is stabilized by anaerobic digestion and obtains methane recovery energy
Source；3) the ashes brickmaking using dewatered sludge or after burning realizes that industrialization recycles；4) it burns.
Also trial makes fuel using dewatered sludge, as patent document CN1080481480A discloses a kind of new energy
The preparation method of material, by stalk, plant waste, coal, house refuse and sludge and small amounts agent production molding combustion
Material, other propellant composition ratios in addition to oxidant are close to respectively.CN101250457A discloses a kind of sludge waste
Grain fuel and its preparation process, fuel include 40 ~ 65% drying sludge, 10 ~ 30% spent bleaching clay, 15 ~ 30% wooden particle, 4
~ 10% desulfurizing agent or sulphur-fixing agent and 5 ~ 20% calorific value additive.Sludge is dyeing waste water sludge or paper mill sludge or gold
Metal surface sewage sludge.CN102002410A discloses a kind of preparation method of composite biological particle fuel, dense to oily sludge
Contracting, after flocculation dewatering with biomass fuel and preservative mixed-forming, oily sludge only accounts for 10 ~ 30%, biomass fuel accounts for 65 ~
88%.CN102786997A discloses a kind of method that biogas residue, municipal sludge and straw powder produce solid molding fuel, respectively will
Aqueous 80 ~ 82% biogas residue and aqueous 75 ~ 80% dewatered sludge and straw powder are mixed into the mixture of moisture content < 60%, then again
It is respectively dried to moisture content 20 ~ 25%, granular fuel and briquette-fuel is respectively prepared, be actually the system of two kinds of shaped fuels
It is standby.CN1045602590B discloses the preparation method and system of a kind of biological substance shaped granule fuel, will be biological with high-temperature steam
Matter and sludge are separately dried, and are dried biomass material with high-temperature flue gas again after crushing, are then added sludge additive and sludge again
The butt quality ratio of raw material and biomass powder mixing, sludge and biomass is (45 ~ 70): (55 ~ 30).These methods or base
In the storage of solution biomass molding fuel and strength problem, or in order to handle and rationally using trade waste or containing greasy dirt
Mud, or a kind of utilization ways of city sewage and sludge are provided.In most of fuel combination the content of sludge lower than biomass at
Divide content or both quite.
Summary of the invention
The object of the present invention is to provide a kind of mud granule fuel and preparation method thereof.
The present invention is achieved through the following technical solutions:
A kind of mud granule fuel, the granular fuel include dry sludge, auxiliary fuel and modified additive, wherein described dry
The mass percent of dry sludge is 47% ~ 77%, and the mass percent of auxiliary fuel is 20% ~ 50%, the quality hundred of modified additive
Divide than being 3% ~ 5%.
In above-mentioned technical proposal, the auxiliary fuel includes sawdust, sawdust or any one or more of mixture of stalk.
In above-mentioned technical proposal, the moisture content of the dry sludge is less than 30%.
In above-mentioned technical proposal, the modified additive selects lignin modification additive.
A kind of preparation method of mud granule fuel, which comprises
Drying sludge: the dewatered sludge from sewage treatment facility is sampled analysis and obtains its moisture content；It is dirty according to dehydration
The moisture content of mud is carried out dehydrating and/or dries drying, makes its moisture content less than 30%, collects as dry sludge；
Auxiliary fuel pretreatment: auxiliary fuel is dried to its moisture content lower than 15%；Auxiliary fuel after drying is used
Pulverizer carries out pulverization process, and smashed auxiliary fuel size is made to be less than 10mm；
The preparation of modified additive: appropriate lignin is dissolved in water and obtains lignin aqueous solution；In lignin aqueous solution, respectively
Formaldehyde is added and p-aminobenzene sulfonic acid carries out crosslinking and polycondensation is modified, obtains modified additive；
Extrusion forming: dry sludge, broken auxiliary fuel and modified additive are pressed into (47% ~ 77%): (20% ~ 50%):
The ratio of (3% ~ 5%) mixes, and is sufficiently stirred as fuel combination, and fuel combination is then put into extrusion forming in press,
Obtain mud granule fuel.
In above-mentioned technical proposal, the starting components and its mass fraction of the modified additive preparation are as follows:
Water: 40~60 parts；
Lignin: 5~20 parts；
Formaldehyde: 7.5~15 parts；
P-aminobenzene sulfonic acid: 8~25 parts.
In above-mentioned technical proposal, the raw material components optimum ratio for preparing modified additive are as follows: water: lignin: formaldehyde:
P-aminobenzene sulfonic acid is 4:1:1:1.4.
In above-mentioned technical proposal, the concentration of formaldehyde is 35 ~ 42%.
In above-mentioned technical proposal, the auxiliary fuel includes sawdust, sawdust or any one or more of mixture of stalk.
The present invention has the following advantages and beneficial effects: 1) calorific value of sludge is relatively low, and being suitably added biomass can be improved
Its calorific value；2) by being crosslinked to lignin, the chemical modifications such as polycondensation modified additive products application is prepared in particle
In the molding preparation of fuel, the ratio of briquetting and product strength of product are greatlyd improve；3) sludge incineration more can be eliminated thoroughly
The pollution of sludge reaches maximum minimizing, and the waste residue after burning can go back to nature and make fertilizer, can also do the original of environmental protection brick
Material；4) granular fuel production prepared by the present invention is simple, possesses good promotion advantage.
Specific embodiment
A specific embodiment of the invention and the course of work are further described below.
A kind of mud granule fuel, including dry sludge, auxiliary fuel and modified additive, wherein the quality of dry sludge
Percentage is 47% ~ 77%, and the mass percent of auxiliary fuel is 20% ~ 50%, and the mass percent of modified additive is 3% ~ 5%.
Auxiliary fuel includes sawdust, sawdust or any one or more of mixture of stalk.
The moisture content of dry sludge is less than 30%.
Modified additive selects lignin modification additive.Lignin basic structural unit is phenylpropyl alcohol alkane, mainly there is 3 kinds of lists
Body: guaiacyl propane, lilac base propane and para hydroxybenzene propane.Existed between these monomers by C-O key and C-C key connection
Together, being formed has the noncrystalline multiple shaped polymer of the natural phenolic of random three dimensional network dimension three-dimensional-structure.The molecule of lignin
There is the various actives groups such as aromatic radical, phenolic hydroxyl group, alcoholic extract hydroxyl group, carbonyl, carboxyl in structure, thus it is anti-that a variety of chemistry can occur
It answers.
Drying sludge: the dewatered sludge from sewage treatment facility is sampled analysis and obtains its moisture content；According to de-
The moisture content of sewage sludge calculates dehydrating agent requirement, dehydrating agent is added in dewatered sludge, after mixing at further dehydration
Reason, makes its moisture content less than 30%；It is collected by the sludge after dehydration, after natural drying as dry sludge；Or it will directly take off
Sewage sludge dries drying and processing, makes its moisture content less than 30%, collects as dry sludge.
Auxiliary fuel pretreatment: auxiliary fuel is dried to its moisture content lower than 15%；By the auxiliary fuel after drying
Pulverization process is carried out using pulverizer, smashed auxiliary fuel size is made to be less than 10mm.
The preparation of modified additive: appropriate lignin is dissolved in water and obtains lignin aqueous solution；In lignin aqueous solution,
It is separately added into formaldehyde and p-aminobenzene sulfonic acid carries out crosslinking and polycondensation is modified, obtain modified additive.
The starting components and its mass fraction (100 parts of summation) of modified additive preparation are as follows:
Water: 40~60 parts；
Lignin: 5~20 parts；
Formaldehyde: 7.5~15 parts；
P-aminobenzene sulfonic acid: 8~25 parts.
The above-mentioned raw material components optimum ratio for preparing modified additive are as follows: water: lignin: formaldehyde: p-aminobenzene sulfonic acid is
4:1:1:1.4。
Wherein concentration of formaldehyde is 35 ~ 42%, preferably 37%.
Extrusion forming: dry sludge, broken auxiliary fuel and modified additive are pressed into (47% ~ 77%): (20% ~
50%): the ratio mixing of (3% ~ 5%), and be sufficiently stirred as fuel combination, then fuel combination is put into press and is squeezed
Molding, obtains mud granule fuel.
Below under more several different ratio embodiments gained fuel characteristic.
Embodiment 1
The raw material of the present embodiment is 50% sludge and 50% auxiliary fuel by weight percentage.
Embodiment 2
The raw material of the present embodiment be by weight percentage 47% sludge, 50% auxiliary fuel and 3% modified additive.
Embodiment 3
The raw material of the present embodiment be by weight percentage 57% sludge, 40% auxiliary fuel and 3% modified additive.
Embodiment 4
The raw material of the present embodiment be by weight percentage 67% sludge, 30% auxiliary fuel and 3% modified additive.
Embodiment 5
The raw material of the present embodiment be by weight percentage 77% sludge, 20% auxiliary fuel and 3% modified additive.
Measure the property such as following table of each embodiment product.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of mud granule fuel, which is characterized in that the granular fuel includes dry sludge, auxiliary fuel and modified addition
Agent, wherein the mass percent of the dry sludge is 47% ~ 77%, the mass percent of auxiliary fuel is 20% ~ 50%, and modification adds
The mass percent for adding agent is 3% ~ 5%.
2. a kind of mud granule fuel according to claim 1, which is characterized in that the auxiliary fuel includes sawdust, wood
Bits or any one or more of mixture of stalk.
3. a kind of mud granule fuel according to claim 1, which is characterized in that the moisture content of the dry sludge is less than
30%。
4. a kind of mud granule fuel according to claim 1, which is characterized in that the modified additive selects lignin
Modified additive.
5. a kind of preparation method of mud granule fuel, which is characterized in that the described method includes:
Drying sludge: the dewatered sludge from sewage treatment facility is sampled analysis and obtains its moisture content；It is dirty according to dehydration
The moisture content of mud is carried out dehydrating and/or dries drying, makes its moisture content less than 30%, collects as dry sludge；
Auxiliary fuel pretreatment: auxiliary fuel is dried to its moisture content lower than 15%；Auxiliary fuel after drying is used
Pulverizer carries out pulverization process, and smashed auxiliary fuel size is made to be less than 10mm；
The preparation of modified additive: appropriate lignin is dissolved in water and obtains lignin aqueous solution；In lignin aqueous solution, respectively
Formaldehyde is added and p-aminobenzene sulfonic acid carries out crosslinking and polycondensation is modified, obtains modified additive；
Extrusion forming: dry sludge, broken auxiliary fuel and modified additive are pressed into (47% ~ 77%): (20% ~ 50%):
The ratio of (3% ~ 5%) mixes, and is sufficiently stirred as fuel combination, and fuel combination is then put into extrusion forming in press,
Obtain mud granule fuel.
6. a kind of preparation method of mud granule fuel according to claim 5, which is characterized in that the modified additive
The starting components and its mass fraction of preparation are as follows:
Water: 40~60 parts；
Lignin: 5~20 parts；
Formaldehyde: 7.5~15 parts；
P-aminobenzene sulfonic acid: 8~25 parts.
7. a kind of preparation method of mud granule fuel according to claim 6, which is characterized in that the concentration of formaldehyde is
35~42%。
8. a kind of preparation method of mud granule fuel according to claim 5, which is characterized in that the auxiliary fuel packet
Include sawdust, sawdust or any one or more of mixture of stalk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811070608.6A CN109097147B (en) | 2018-09-13 | 2018-09-13 | Sludge granular fuel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811070608.6A CN109097147B (en) | 2018-09-13 | 2018-09-13 | Sludge granular fuel and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109097147A true CN109097147A (en) | 2018-12-28 |
| CN109097147B CN109097147B (en) | 2021-07-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088086A (en) * | 2019-12-31 | 2020-05-01 | 宁波中科远东催化工程技术有限公司 | Lignin-humic acid based dispersing agent and preparation method and application thereof |
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| WO1999051709A1 (en) * | 1998-04-06 | 1999-10-14 | Valery Grigorievich Lury | Moulded fuel, variants, and methods for producing the same |
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2018
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| US5125931A (en) * | 1990-09-24 | 1992-06-30 | Dynecology Incorporated | Sewage sludge disposal process and apparatus |
| WO1999051709A1 (en) * | 1998-04-06 | 1999-10-14 | Valery Grigorievich Lury | Moulded fuel, variants, and methods for producing the same |
| CN101760268A (en) * | 2010-01-20 | 2010-06-30 | 福州大学 | Biomass coal pulp prepared by water hyacinth and anthracite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088086A (en) * | 2019-12-31 | 2020-05-01 | 宁波中科远东催化工程技术有限公司 | Lignin-humic acid based dispersing agent and preparation method and application thereof |
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| CN109097147B (en) | 2021-07-23 |
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