CN109370689A - A kind of biomass granule fuel and preparation method - Google Patents
A kind of biomass granule fuel and preparation method Download PDFInfo
- Publication number
- CN109370689A CN109370689A CN201811336288.4A CN201811336288A CN109370689A CN 109370689 A CN109370689 A CN 109370689A CN 201811336288 A CN201811336288 A CN 201811336288A CN 109370689 A CN109370689 A CN 109370689A
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- parts
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- biomass granule
- combustion adjuvant
- granule fuel
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Classifications
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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
-
- 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
-
- 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
- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
-
- 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 biomass granule fuels, according to parts by weight, it is prepared from the following materials: 68-75 parts of wheat stalk, 40-49 parts of corn stover, wooden 30-42 parts of the chaff, 20-35 parts of fine sand, 13-20 parts of combustion adjuvant, 2-6 parts and additive 5-9 parts of coal slime.A kind of biomass granule fuel of the present invention and preparation method, by adding combustion adjuvant and additive into the raw material after being pulverized and mixed and being sieved, traditional combustion adjuvant caused by being sieved that is pulverized and mixed together is avoided to filter out with additive with impurity, by changing traditional raw material order of addition, improve granular mass after forming, guarantee internal certain water content when drying, it can be avoided that moisture is excessively high or too low influence compression forming, protect Preparation equipment, ring moulds hole plug caused by avoiding moisture excessively high, when avoiding moisture too low there is a situation where particle be difficult to mold powder it is more, improve ratio of briquetting and yield, bring better prospect of the application.
Description
Technical field
The present invention relates to biomass granule fuel technical field more particularly to a kind of biomass granule fuel and preparation sides
Method.
Background technique
Biomass resource is the clean energy resource that reserves are number four, have vast potential for future development, because its it is distinctive can be again
Natural disposition, low pollution and widely distributed property, obtain the extensive concern of people, existing biomass granule fuel is unable to satisfy people's
It uses；
Existing biomass granule fuel in processing there are certain drawbacks, firstly, traditional all raw materials powder together
Broken mixing and sieving, are easy to cause combustion adjuvant to filter out with additive with impurity, combustion adjuvant can not be made to obtain with additive
It adequately utilizes, granular mass is poor after molding, secondly, raw material interior moisture content is unable to maintain that in certain value when drying, is easy
Because moisture is excessively high or too low influence compression forming can lack the lubricating action of appropriate moisture when moisture is too low between particle,
Particle is difficult to form, and powder is more out, reduces yield, when moisture is excessively high, causes material and pressure roller to skid, causes under briquetting pressure
Drop, material can not rule out, ring moulds hole plug, and yield reduces, for this purpose, it is proposed that a kind of biomass granule fuel and preparation side
Method.
Summary of the invention
The purpose of the present invention is to solve the problems of the prior art, and a kind of biomass granule fuel proposed.
To achieve the goals above, present invention employs following technical solutions:
A kind of biomass granule fuel is prepared from the following materials according to parts by weight: 68-75 parts of wheat stalk, jade
40-49 parts of stalk of rice, wooden 30-42 parts of the chaff, 20-35 parts of fine sand, 13-20 parts of combustion adjuvant, 2-6 parts and additive 5-9 parts of coal slime.
Preferably, according to parts by weight, it is prepared from the following materials: 71-73 parts of wheat stalk, corn stover 46-48
Part, wooden 37-39 parts of the chaff, 28-30 parts of fine sand, 17-19 parts of combustion adjuvant, 3-5 parts and additive 6-8 parts of coal slime.
Preferably, the additive is adhesive, and the combustion adjuvant includes one or both of magnesium chloride and sodium nitrate.
Preferably, a kind of preparation method of biomass granule fuel, described specific step is as follows:
(1) raw material is pulverized and mixed: according to parts by weight, weighing following raw material: wheat stalk, corn stover, wooden chaff, fine sand
It with coal slime, is placed in pulverizer and crushes, and be mixed and made into pulvis；
(2) be sieved: the pulvis synthesized in step (1) be subjected to sieving removal of impurities, removing mechanical equipment is damaged and
Influence the impurity of forming process；
(3) combustion adjuvant and adhesive are added: adding combustion adjuvant into the pulvis after sieving removal of impurities in step (2) and coheres
Agent；
(4) it dries and keeps certain moisture: the mixed pulvis of raw material all in step (3) are dried, dry temperature
Degree is 90-110 DEG C, and it is spare that drying to certain moisture is stored in raw material cabin；
(5) compression forming: being put into single lead screw ex truding briquetting machine for the raw material of drying to a certain extent in step (4), with 12MPa at
Type pressure extrusion is 5-7mm at diameter, and length is the cylindrical particle of 6-8cm, dry, discharging.
Preferably, the fine sand in the step (1) and coal slime pass through sieving in advance and clean.
Preferably, the aperture of sieve pore is 6mm in the step (2).
Preferably, in the step (3) combustion adjuvant preparation are as follows: by magnesium chloride, sodium nitrate mixed grinding 20-30min, put
Enter in 60-80 DEG C of water-bath, spray drying is made；The preparation of the adhesive are as follows: acid solution is added into wooden processing-waste
It is 4-6 to pH, obtains the suspension containing lignin particles, flocculant, which is then added, keeps the cohesion of the lignin particles in suspension heavy
It forms sediment, is made after drying, crushing, screening.
Preferably, certain moisture is moisture content in 13%-16% in the step (4).
Compared with prior art, the present invention provides a kind of biomass granule fuel and preparation methods, have following beneficial
Effect:
1, by that can save combustion adjuvant and add to being pulverized and mixed and adding combustion adjuvant and additive in the raw material after sieving
Add agent, combustion adjuvant is made to be fully utilized with additive, avoids traditional be pulverized and mixed together and the caused combustion adjuvant that is sieved
It is filtered out with additive with impurity, by changing traditional raw material order of addition, resources of production can be saved, improve molding
Granular mass afterwards；
2, guarantee internal certain water content when drying, can be avoided that moisture is excessively high or too low influence compression forming, protect
Preparation equipment is protected, ring moulds hole plug caused by avoiding moisture excessively high occurs particle and is difficult to mold powder when avoiding moisture too low
More situations improves ratio of briquetting and yield.
Detailed description of the invention
Fig. 1 is the preparation method flow chart of a kind of biomass granule fuel of the present invention and preparation method.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Embodiment 1
A kind of biomass granule fuel is prepared from the following materials according to parts by weight: 71 parts of wheat stalk, corn
46 parts of stalk, wooden 37 parts of the chaff, 28 parts of fine sand, 17 parts of combustion adjuvant, 3 parts and 6 parts of additive of coal slime.
The additive is adhesive, and the combustion adjuvant includes one or both of magnesium chloride and sodium nitrate.
A kind of preparation method of biomass granule fuel, described specific step is as follows:
(1) raw material is pulverized and mixed: according to parts by weight, weighing following raw material: wheat stalk, corn stover, wooden chaff, fine sand
It with coal slime, is placed in pulverizer and crushes, and be mixed and made into pulvis, fine sand and coal slime pass through sieving in advance and clean；
(2) be sieved: the pulvis synthesized in step (1) be subjected to sieving removal of impurities, removing mechanical equipment is damaged and
The impurity of forming process is influenced, the aperture of sieve pore is 6mm；
(3) combustion adjuvant and adhesive are added: adding combustion adjuvant into the pulvis after sieving removal of impurities in step (2) and coheres
Agent, the preparation of combustion adjuvant are as follows: magnesium chloride, sodium nitrate mixed grinding 20min are put into 60-80 DEG C of water-bath, spray drying system
?；The preparation of the adhesive are as follows: it is 4 that acid solution is added into wooden processing-waste to pH, is obtained containing lignin particles
Suspension, flocculant, which is then added, makes the lignin particles coagulative precipitation in suspension, makes after drying, crushing, screening
?；
(4) it dries and keeps certain moisture: the mixed pulvis of raw material all in step (3) are dried, dry temperature
Degree is 90 DEG C, and it is spare that drying to certain moisture is stored in raw material cabin, and certain moisture is moisture content 13%；
(5) compression forming: being put into single lead screw ex truding briquetting machine for the raw material of drying to a certain extent in step (4), with 12MPa at
Type pressure extrusion is 5mm at diameter, and length is the cylindrical particle of 6cm, dry, discharging.
Embodiment 2
A kind of biomass granule fuel is prepared from the following materials according to parts by weight: 72 parts of wheat stalk, corn
47 parts of stalk, wooden 38 parts of the chaff, 29 parts of fine sand, 18 parts of combustion adjuvant, 4 parts and 7 parts of additive of coal slime.
The additive is adhesive, and the combustion adjuvant includes one or both of magnesium chloride and sodium nitrate.
A kind of preparation method of biomass granule fuel, described specific step is as follows:
(1) raw material is pulverized and mixed: according to parts by weight, weighing following raw material: wheat stalk, corn stover, wooden chaff, fine sand
It with coal slime, is placed in pulverizer and crushes, and be mixed and made into pulvis, fine sand and coal slime pass through sieving in advance and clean；
(2) be sieved: the pulvis synthesized in step (1) be subjected to sieving removal of impurities, removing mechanical equipment is damaged and
The impurity of forming process is influenced, the aperture of sieve pore is 6mm；
(3) combustion adjuvant and adhesive are added: adding combustion adjuvant into the pulvis after sieving removal of impurities in step (2) and coheres
Agent, the preparation of combustion adjuvant are as follows: magnesium chloride, sodium nitrate mixed grinding 25min are put into 70 DEG C of water-baths, spray drying is made；Institute
State the preparation of adhesive are as follows: it is 5 that acid solution is added into wooden processing-waste to pH, obtains the suspension containing lignin particles
Liquid, flocculant, which is then added, makes the lignin particles coagulative precipitation in suspension, is made after drying, crushing, screening；
(4) it dries and keeps certain moisture: the mixed pulvis of raw material all in step (3) are dried, dry temperature
Degree is 100 DEG C, and it is spare that drying to certain moisture is stored in raw material cabin, and certain moisture is moisture content 14%；
(5) compression forming: being put into single lead screw ex truding briquetting machine for the raw material of drying to a certain extent in step (4), with 12MPa at
Type pressure extrusion is 6mm at diameter, and length is the cylindrical particle of 7cm, dry, discharging.
Embodiment 3
A kind of biomass granule fuel is prepared from the following materials according to parts by weight: 73 parts of wheat stalk, corn
48 parts of stalk, wooden 39 parts of the chaff, 30 parts of fine sand, 19 parts of combustion adjuvant, 5 parts and 8 parts of additive of coal slime.
The additive is adhesive, and the combustion adjuvant includes one or both of magnesium chloride and sodium nitrate.
A kind of preparation method of biomass granule fuel, described specific step is as follows:
(1) raw material is pulverized and mixed: according to parts by weight, weighing following raw material: wheat stalk, corn stover, wooden chaff, fine sand
It with coal slime, is placed in pulverizer and crushes, and be mixed and made into pulvis, fine sand and coal slime pass through sieving in advance and clean；
(2) be sieved: the pulvis synthesized in step (1) be subjected to sieving removal of impurities, removing mechanical equipment is damaged and
The impurity of forming process is influenced, the aperture of sieve pore is 6mm；
(3) combustion adjuvant and adhesive are added: adding combustion adjuvant into the pulvis after sieving removal of impurities in step (2) and coheres
Agent, the preparation of combustion adjuvant are as follows: magnesium chloride, sodium nitrate mixed grinding 30min are put into 80 DEG C of water-baths, spray drying is made；Institute
State the preparation of adhesive are as follows: it is 6 that acid solution is added into wooden processing-waste to pH, obtains the suspension containing lignin particles
Liquid, flocculant, which is then added, makes the lignin particles coagulative precipitation in suspension, is made after drying, crushing, screening；
(4) it dries and keeps certain moisture: the mixed pulvis of raw material all in step (3) are dried, dry temperature
Degree is 110 DEG C, and it is spare that drying to certain moisture is stored in raw material cabin, and certain moisture is moisture content 15%；
(5) compression forming: being put into single lead screw ex truding briquetting machine for the raw material of drying to a certain extent in step (4), with 12MPa at
Type pressure extrusion is 7mm at diameter, and length is the cylindrical particle of 8cm, dry, discharging.
Table 1 is the comparison of each data in the preparation method of embodiment 1-3 biomass granule fuel, the result is as follows:
Three groups of embodiments known to 1 experimental data of table improve the ratio of briquetting of biomass granule fuel, wherein embodiment 3
Combustion adjuvant can be saved by adding combustion adjuvant and additive into the raw material after being pulverized and mixed and being sieved for optimal selection
With additive, combustion adjuvant is made to be fully utilized with additive, traditional being pulverized and mixed together is avoided to help with caused by sieving
Combustion agent is filtered out with additive with impurity, by changing traditional raw material order of addition, can be saved resources of production, be improved
Granular mass after molding guarantees internal certain water content when drying, can be avoided that moisture is excessively high or too low influence is compressed into
Type, protects Preparation equipment, and ring moulds hole plug caused by avoiding moisture excessively high occurs particle and is difficult to mold when avoiding moisture too low
Situation more than powder improves ratio of briquetting and yield.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. a kind of biomass granule fuel, which is characterized in that according to parts by weight, be prepared from the following materials: wheat stalk
68-75 parts, 40-49 parts of corn stover, wooden 30-42 parts of the chaff, 20-35 parts of fine sand, 13-20 parts of combustion adjuvant, 2-6 parts of coal slime and addition
5-9 parts of agent.
2. a kind of biomass granule fuel according to claim 1, which is characterized in that according to parts by weight, by following original
Material is prepared: 71-73 parts of wheat stalk, 46-48 parts of corn stover, wooden 37-39 parts of chaff, 28-30 parts of fine sand, combustion adjuvant 17-
19 parts, 3-5 parts and additive 6-8 parts of coal slime.
3. a kind of biomass granule fuel according to claim 1, which is characterized in that the additive is adhesive, institute
Stating combustion adjuvant includes one or both of magnesium chloride and sodium nitrate.
4. the preparation method of any biomass granule fuel according to claim 1 to 3, which is characterized in that the tool
Steps are as follows for body:
(1) raw material is pulverized and mixed: according to parts by weight, weighing following raw material: wheat stalk, corn stover, the wooden chaff, fine sand and coal
Mud is placed in pulverizer and crushes, and is mixed and made into pulvis；
(2) it is sieved: the pulvis synthesized in step (1) being subjected to sieving removal of impurities, removing is damaged and influenced on mechanical equipment
The impurity of forming process；
(3) combustion adjuvant and adhesive are added: adding combustion adjuvant and adhesive into the pulvis after sieving removal of impurities in step (2)；
(4) it dries and keeps certain moisture: the mixed pulvis of raw material all in step (3) being dried, drying temperature is
90-110 DEG C, it is spare that drying to certain moisture is stored in raw material cabin；
(5) compression forming: the raw material of drying to a certain extent in step (4) is put into single lead screw ex truding briquetting machine, with the molding pressure of 12MPa
It is 5-7mm that power, which is squeezed into diameter, and length is the cylindrical particle of 6-8cm, dry, discharging.
5. a kind of preparation method of biomass granule fuel according to claim 4, which is characterized in that the step (1)
In fine sand and coal slime pass through in advance sieving clean.
6. a kind of preparation method of biomass granule fuel according to claim 4, which is characterized in that the step (2)
The aperture of middle sieve pore is 6mm.
7. a kind of preparation method of biomass granule fuel according to claim 4, which is characterized in that the step (3)
The preparation of middle combustion adjuvant are as follows: magnesium chloride, sodium nitrate mixed grinding 20-30min are put into 60-80 DEG C of water-bath, spray drying system
?；The preparation of the adhesive are as follows: it is 4-6 that acid solution is added into wooden processing-waste to pH, is obtained containing lignin particles
Suspension, then be added flocculant make the lignin particles coagulative precipitation in suspension, after drying, crushing, screening
It is made.
8. a kind of preparation method of biomass granule fuel according to claim 4, which is characterized in that the step (4)
In certain moisture be moisture content in 13%-16%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336288.4A CN109370689A (en) | 2018-11-09 | 2018-11-09 | A kind of biomass granule fuel and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336288.4A CN109370689A (en) | 2018-11-09 | 2018-11-09 | A kind of biomass granule fuel and preparation method |
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| CN109370689A true CN109370689A (en) | 2019-02-22 |
Family
ID=65384438
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| CN201811336288.4A Pending CN109370689A (en) | 2018-11-09 | 2018-11-09 | A kind of biomass granule fuel and preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655963A (en) * | 2019-11-19 | 2020-01-07 | 秦韵涵 | Drying-free treatment process for coal slime |
| RU2738709C1 (en) * | 2020-05-25 | 2020-12-15 | Эдуард Владимирович Алексеенко | Method of producing molded fuel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753663A (en) * | 2016-11-23 | 2017-05-31 | 怀宁县鑫茂源生物质颗粒燃料有限公司 | A kind of caking ability biomass fuel pellet high |
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2018
- 2018-11-09 CN CN201811336288.4A patent/CN109370689A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753663A (en) * | 2016-11-23 | 2017-05-31 | 怀宁县鑫茂源生物质颗粒燃料有限公司 | A kind of caking ability biomass fuel pellet high |
Non-Patent Citations (1)
| Title |
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| 杜伟娜著: "《可再生的碳源 生物质能》", 31 August 2015, 北京工业大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655963A (en) * | 2019-11-19 | 2020-01-07 | 秦韵涵 | Drying-free treatment process for coal slime |
| RU2738709C1 (en) * | 2020-05-25 | 2020-12-15 | Эдуард Владимирович Алексеенко | Method of producing molded fuel |
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Application publication date: 20190222 |