CN1039348C - Process for manufacturing composite solid fuel from coal and vegetable material - Google Patents
Process for manufacturing composite solid fuel from coal and vegetable material Download PDFInfo
- Publication number
- CN1039348C CN1039348C CN93104509A CN93104509A CN1039348C CN 1039348 C CN1039348 C CN 1039348C CN 93104509 A CN93104509 A CN 93104509A CN 93104509 A CN93104509 A CN 93104509A CN 1039348 C CN1039348 C CN 1039348C
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- CN
- China
- Prior art keywords
- coal
- roller
- solid fuel
- vegetable matter
- composite solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
To obtain a composite solid fuel excellent in ignitability and combustibility and high in crushing strength with a small electric power consumed. Easily pulverizable coal is pulverized to such an extent that at least 80% of the resulting coal powder passes through a sieve having openings of 0.25mm in size. Vegetable matter pulverizable with a small electric power to be consumed is pulverized to such an extent that the resulting vegetable matter powder passes through a sieve having openings of 2mm in size. The coal powder is mixed with at most 25wt.% vegetable matter powder. The resulting mixture as the starting material is pressed with a roll press while setting the roll support pressure at most about 8t/cm to form a composite solid fuel.
Description
The invention relates to the method for preparing composite solid fuel from fine coal and comminuted plants material such as timber, bagasse etc.
Self-evident, coal comprises that hard coal, bituminous coal and brown coal (brown) and brown coal are used as various uses and important fuel for a long time.
The fine coal that the granularity that forms in mining, conveying and refining process is several millimeters carries out moulded section with suitable binder, uses as said shaped coal.
Yet said low-grade coal comprises the nearly ash content of 30% (weight) as contain and be widely used as the brown coal and the brown coal of cheap fuel in a large number in the whole world, and therefore, its burning is bad, and calorific value is low relatively.And the such low grade coal cinder that produces a large amount of cigarette ashes and form by the clinkering ash content.
Proposed fine coal especially low grade coal particle is mixed with exsiccant, comminuted plants material such as timber, bagasse etc., then added tackiness agent if desired, carried out compression molding.
The preparation of above-mentioned composite solid fuel generally comprises to be carried out coal and vegetable matter respectively drying and is ground into the fragment of size less than several millimeters, be blended together, mix as far as possible, if desired, kind according to material adds tackiness agent, again mixture is added moulding in moulding press such as the shaped coal moulding press, a pair of coefficient roller is wherein arranged, the mould depression is arranged on its periphery, wherein any roller is suitable for pressing down another roller at 8t/cm or working pressure still less, working pressure is equivalent to along the share of the total pressure of the effective roller length five equilibrium that is formed depression on the roller total length, by rotary screw the shaped coal material in the hopper is added in the shaped coal moulding press, screw rod is installed in the top of above-mentioned roller.
Preferably improve this physical strength that is mixed into moulded coal fuel, so that not fragile or crushing in its transportation.Also need the volatile constituent of burning, it mainly is to discharge to about 400 ℃ low temperature at about 200 ℃.By the vegetable matter of burning low-flash or low ignition point,, and improve burning of coal with the cigarette ash of elimination generation.In order to achieve the above object, must not only to control the quantitative proportion of component and pressure, and the vegetable matter uniform particles will be dispersed in the coal particle.
When improve composite solid fuel above the condition pointed out satisfy, low grade coal, wood fragments material and bagasse etc. can effectively utilize, good fuel also can the low price supply.
Grind vegetable matter and long fiber material especially when exsiccant timber or bagasse with hammer mill or pinmill, each fragment that obtains is owing to its fibrous texture has long and narrow profile, thus chip length be its diameter 1-2mm 3-5 doubly.Generally speaking, vegetable matter preferably galls into the as far as possible little particle of size, so that the combustionproperty that obtains.Yet self-evident, more energy and long time are necessary, this with from the purpose of the cheap composite solid fuel of low grade coal and wood fragments material or bagasse preparation antithesis.
Therefore, the purpose of this invention is to provide from coal and vegetable matter, especially wood fragments material and bagasse prepare the solid-fuelled method big with intensity that compresses, and don't lose the advantage of the low expense of this fuel.
Above-mentioned purpose can mainly can and be pulverized with the rerum natura material so that fragment is reached by another 2mm mesh sieve by the 0.25mm mesh sieve so that make greater than 80% fine coal by the comminuted coal material.
Three kinds of art materials/substances, promptly cdear, tamarack and pine tree are ground into the fragment of 10 to 20mm sizes, pulverize with hammer mill, so that make fragment pass through the 2mm mesh sieve, prepare three kinds of first kind of samples pulverizing wood substance.With class with method, second kind of sample of the wood substance of three kinds of pulverizing that preparation can be by the 1mm mesh sieve.
Simultaneously, drive the electric power that hammer mill consumed when measuring first kind of preparation and second kind of sample respectively, the result is as follows:
Sieve mesh cdear tamarack pine tree
2mm 53.1 40.1 65.3
1mm 105.8 91.5 125.0
(KW/t)
The electric power of second kind of sample consumption of preparation is 2 times that first kind of sample of preparation consumes electric power approximately.
20% (weight) can be by the 2mm mesh sieve first kind of sample of three kinds of timber have with 80% (weight) respectively and make the 6 kind sample mixed of 80% particle respectively by the fine coal material of the various granularities of 1.10,1.00,0.53,0.26,0.26 and 0.074 mesh sieve.The sweetening agent white lime and the tackiness agent molasses uniform mixing that in these six kinds of mixtures, add 5% (weight) and 10% (weight) respectively.
These six kinds of mixtures carry out mold pressing with roll squeezer under working pressure 6t/cm, to prepare 6 kinds of composite solid fuel shaped coals, carry out rupture test.The result is as follows:
Fine coal
1.10 1.00 0.53 0.26 0.20 0.074
(sieve mesh)
Destroy 40 44 44 58 62 90
(intensity (Kg)
Find out that by The above results strength at break becomes tiny with fine coal and increases, can be from 80% fine coal by the situation of 0.26 mesh sieve, this tendency is very noticeable.
Because fine coal and vegetable matter particulate mix, coal and the fine entanglement of vegetable matter particle are so that can obtain fully burning and the composite solid fuel of high strength at break with quite low cost.
Claims (5)
1. the method for preparing composite solid fuel from fine coal and vegetable matter, comprise the following steps: dry respectively, the above-mentioned two kinds of materials of pulverizing, with two kinds of material crushed uniform mixing together, make vegetable matter content be no more than 25% (weight), under 8t/cm or lower working pressure, mixture is carried out mold pressing with the shaped coal moulding press then, it is characterized in that the comminuted coal material so that make fine coal pass through the 0.25mm mesh sieve, pulverize vegetable matter so that make fragment pass through the 2mm mesh sieve greater than 80%.
2. require 1 method according to aforesaid right, it is characterized in that vegetable matter is timber or bagasse.
3. require 1 or 2 method according to aforesaid right, it is characterized in that in two kinds of mixtures of material pulverizing, adding respectively about 5% and about 10% (weight) sweetening agent white lime and tackiness agent molasses.
4. require 1 or 2 method according to aforesaid right, it is characterized in that mold pressing carries out with the moulding press with a pair of phase despining roller, wherein make the shaped coal of many depressions on the surface of any one or two rollers with molded composite solid fuel, wherein arbitrary roller is suitable for pressing down another affined rotation roller in working pressure, working pressure is equivalent to along the share of the total pressure of the effective roller length five equilibrium that is formed depression on the roller total length, 8t/cm or still less.
5. according to the method for claim 3, it is characterized in that mold pressing carries out with the moulding press with a pair of phase despining roller, wherein make the shaped coal of many depressions on the surface of any one or two rollers with molded composite solid fuel, wherein arbitrary roller is suitable for pressing down another affined rotation roller in working pressure, working pressure is equivalent to along the share of the total pressure of the effective roller length five equilibrium that is formed depression on the roller total length, 8t/cm or still less.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP234869/92 | 1992-09-02 | ||
| JP234869/199 | 1992-09-02 | ||
| JP23486992A JPH0680976A (en) | 1992-09-02 | 1992-09-02 | Production of composite solid fuel composed of coal and vegetable matter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1083519A CN1083519A (en) | 1994-03-09 |
| CN1039348C true CN1039348C (en) | 1998-07-29 |
Family
ID=16977617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93104509A Expired - Fee Related CN1039348C (en) | 1992-09-02 | 1993-03-29 | Process for manufacturing composite solid fuel from coal and vegetable material |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0680976A (en) |
| CN (1) | CN1039348C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5951059A (en) * | 1996-07-24 | 1999-09-14 | Tokai Rubber Industries Ltd. | Tube connector device having connector holder made of elastomer |
| EP1844853A4 (en) * | 2005-01-31 | 2008-05-28 | Ichiro Sugimoto | Carbon dioxide adsorber for use at combustion of fossil fuel, containing dry powder of plant fiber |
| JP2007169484A (en) * | 2005-12-22 | 2007-07-05 | Saitama Univ | Pulverized fuel of biomass-coal blend from coal powder and/or carbonized material from wastes and powder of vegetable-derived polymer organic material, combustible gas, and process for producing combustible and char |
| JP2009051985A (en) * | 2007-08-29 | 2009-03-12 | Toshihiko Maruyama | Manufacturing method of biomass-based molded fuel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049163A (en) * | 1988-12-28 | 1991-09-17 | Briquetting Research And Design Institute, Beijing Graduate School Of China University Of Mining And Technology | Process for reducing sulphur dioxide emission from burning coal containing sulphur |
-
1992
- 1992-09-02 JP JP23486992A patent/JPH0680976A/en not_active Withdrawn
-
1993
- 1993-03-29 CN CN93104509A patent/CN1039348C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049163A (en) * | 1988-12-28 | 1991-09-17 | Briquetting Research And Design Institute, Beijing Graduate School Of China University Of Mining And Technology | Process for reducing sulphur dioxide emission from burning coal containing sulphur |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0680976A (en) | 1994-03-22 |
| CN1083519A (en) | 1994-03-09 |
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| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |