CN108192679B - Briquette and its preparation method and use - Google Patents
Briquette and its preparation method and use Download PDFInfo
- Publication number
- CN108192679B CN108192679B CN201810077531.9A CN201810077531A CN108192679B CN 108192679 B CN108192679 B CN 108192679B CN 201810077531 A CN201810077531 A CN 201810077531A CN 108192679 B CN108192679 B CN 108192679B
- Authority
- CN
- China
- Prior art keywords
- parts
- briquette
- lignite
- coal
- grass
- 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.)
- Active
Links
- 239000004484 Briquette Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000003245 coal Substances 0.000 claims abstract description 48
- 239000003077 lignite Substances 0.000 claims abstract description 48
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 34
- 241000209504 Poaceae Species 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 10
- 235000011837 pasties Nutrition 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- 235000019738 Limestone Nutrition 0.000 claims description 6
- 229920002472 Starch Polymers 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- 239000008107 starch Substances 0.000 claims description 6
- 235000019698 starch Nutrition 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 239000006188 syrup Substances 0.000 claims description 5
- 235000020357 syrup Nutrition 0.000 claims description 5
- 239000008188 pellet Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 2
- 230000003137 locomotive effect Effects 0.000 claims description 2
- 238000005272 metallurgy Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 13
- 230000035939 shock Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000000843 powder Substances 0.000 abstract description 7
- 239000000654 additive Substances 0.000 abstract description 5
- 230000000996 additive effect Effects 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 4
- 230000002195 synergetic effect Effects 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000002309 gasification Methods 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000197 pyrolysis Methods 0.000 abstract description 3
- 230000002269 spontaneous effect Effects 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229920005610 lignin Polymers 0.000 description 5
- 239000011269 tar Substances 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229920002522 Wood fibre Polymers 0.000 description 3
- 239000002025 wood fiber Substances 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- QIVUCLWGARAQIO-OLIXTKCUSA-N (3s)-n-[(3s,5s,6r)-6-methyl-2-oxo-1-(2,2,2-trifluoroethyl)-5-(2,3,6-trifluorophenyl)piperidin-3-yl]-2-oxospiro[1h-pyrrolo[2,3-b]pyridine-3,6'-5,7-dihydrocyclopenta[b]pyridine]-3'-carboxamide Chemical compound C1([C@H]2[C@H](N(C(=O)[C@@H](NC(=O)C=3C=C4C[C@]5(CC4=NC=3)C3=CC=CN=C3NC5=O)C2)CC(F)(F)F)C)=C(F)C=CC(F)=C1F QIVUCLWGARAQIO-OLIXTKCUSA-N 0.000 description 1
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000000641 cold extrusion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention relates to a briquette coal and a preparation method and application thereof, wherein the briquette coal comprises pulverized lignite and grass of Gramineae which are integrally formed. The raw materials of the invention are wide in source, the low-level lignite and the cheap and easily available gramineous green grass are blended to generate the synergistic effect to manufacture the briquette, so that the uniformity and the compactness of the lignite coal powder and the gramineous green grass after integration are more outstanding compared with the manually compounded composite additive in the prior art, the obtained briquette has high heat value and high thermal stability, has strong thermal shock resistance under the pressurization condition, is easier to store and transport, greatly reduces the risks of weathering, spontaneous combustion and the like in the lignite storage and transportation process, increases the terminal utilization efficiency, saves energy, reduces consumption and has obvious economic benefit. The briquette of the invention widens the application range of the lignite, can be effectively used in other fields of gasification, pyrolysis and the like, and effectively increases the additional value of the lignite.
Description
Technical Field
The invention relates to the field of coal chemical industry, in particular to briquette and a preparation method and application thereof.
Background
Lignite, also known as firewood coal, is the lowest coalification degree of mineral coal. A low-rank coal is between peat and asphalt coal, and contains humic acid soluble in alkaline solution. The oxygen content in the coal is high. Strong chemical reactivity, poor thermal stability and severe crushing when lump coal is heated. Stored in the air is easy to be weathered and deteriorated, and is broken into blocks or even powder. The Chinese brown coal has large reserves, is mostly distributed in remote areas such as inner Mongolia, Xinjiang, Yunnan and the like, has large safety risk, high cost and poor economic benefit due to high water content and low heat value of direct transportation, is narrow in application range due to coal quality characteristics, is difficult to be applied to other fields except direct combustion, and can not only relieve the energy supply trouble of China but also drive the development of national economy if the brown coal resources can be efficiently and fully utilized. The quality-improved lignite is recycled, so that the energy consumption of the lignite is reduced, and the utilization efficiency is improved, wherein the quality improvement of drying and dehydration is the main means for the quality improvement of the lignite. But a large amount of coal dust can be generated due to self stress and the action of external mechanical force in the dehydration process, so that the processing and the utilization of the coal dust are difficult. The method for preparing the coal briquette from the dried and upgraded lignite by adding the binder is an efficient and clean treatment method, can improve the utilization rate of resources, reduce environmental pollution and improve the economic benefit and social benefit of enterprises.
CN104357121A discloses a production method for bonding and molding lignite, which comprises the steps of crushing lignite blocks to be less than 3mm, adding a composite binder consisting of polyvinyl alcohol, carboxymethyl cellulose, water glass and water, uniformly mixing, carrying out cold extrusion molding in a coal rod machine, and drying the molded coal rod at 60-120 ℃ until the moisture content is less than 10% to obtain a molded coal product. The binder used by the technology is large in dosage, accounts for 10% -35% of coal, and is high in cost. Like the conventional lignite forming mode in the prior art, the finally prepared briquette is low in heat strength and is easy to crack into powder before forming under a heated condition, so that the briquette is large in dust amount and fine in dust in the process, and cannot be used, such as in the fields of gasification, pyrolysis and the like, and the briquette is poor in thermal shock resistance under a pressurized condition, so that the briquette is a great technical problem to be solved urgently in practical application.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the briquette which is simple and easily available in raw materials, low in cost, high in calorific value and high in thermal stability, and strong in thermal shock resistance under a pressurizing condition.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a briquette, comprising pulverized lignite and grass of the family Gramineae which are integrally formed.
In the field, the molded coal is a coal finished product which is formed by mechanical processing according to the proportion, mechanical strength and shape and size required by specific application and has certain strength, size and shape by taking pulverized lignite as a main raw material.
The term "comprising" as used herein means that it may include, in addition to the recited components, other components which impart different characteristics to the briquette. In addition, the term "comprising" as used herein may be replaced by "being" or "consisting of … …" as closed.
In order to improve the mechanical strength after molding and consider that grass is inflammable after being dried and generally tends to select high-efficiency additive lignin extracted from plants or artificially synthesized as a binder to process and mold lignite coal powder, the invention utilizes grass of Gramineae as a natural auxiliary material, compared with the prior art of binders such as lignin and the like, the grass is cheap and easily obtained and has rich plant fibers, inorganic substances and organic substances, the grass of Gramineae of the invention is a common weed with wide sources and no need of deep processing, the grass is actually an organic complex formed by various components, the lignite of low level and the grass of Gramineae are blended, the two generate synergistic action, so that the uniformity and compactness after the lignite coal powder and the grass components are integrated are more outstanding compared with the composite additive artificially compounded in the prior art, and the inflammability of the dried green grass is inhibited, and the obtained molded coal has high heat value and high thermal stability, strong thermal shock resistance under the pressurizing condition, high added value and remarkable economic benefit.
Preferably, the pulverized lignite is prepared from 5 to 20 parts by weight of grass of Gramineae, such as 5 parts, 8 parts, 10 parts, 12 parts, 15 parts, 18 parts or 20 parts of the pulverized lignite by weight of 100 parts by weight.
Preferably, the molded coal further comprises the following components in parts by mass based on 100 parts by mass of the pulverized lignite:
0-5 parts of starch, such as 0 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts or 5 parts; 0 to 10 parts of tar, for example, 0 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, 9.5 parts, or 10 parts; 0-5 parts of syrup, such as 0 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts or 5 parts; 0 to 5 parts of limestone, such as 0 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, or 5 parts; 0 to 10 parts of sodium humate, such as 0 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, 9.5 parts or 10 parts; and the mass parts of the components are not 0 at the same time. The binder is further added to improve the cold and hot strength of the final molded coal, and particularly, the carbon bonds formed by additive carbonization and coal in the heating process can strengthen the connection between the coal and the molded coal, so that the molded coal keeps the original shape and the crushing probability is reduced.
Preferably, the briquette is a cylindrical pellet. Compared with other types of briquettes such as cake-shaped briquettes and the like which are pressed and molded in the prior art, the briquette with the formula is designed into a cylindrical shape, so that the specific surface area of the briquette is further improved, and the rapid volatilization of volatile matters is facilitated in the pressurizing treatment and/or heating process, so that the breakage of the briquette in the heating volatilization process is reduced, the thermal shock resistance of the briquette is further improved, and the briquette is more suitable for practical application.
Preferably, the briquette has a diameter of 2 to 25mm, such as 2mm, 5mm, 10mm, 12mm, 15mm, 18mm, 20mm, 22mm, or 25mm, etc., and a length of 2 to 60mm, such as 2mm, 5mm, 10mm, 12mm, 15mm, 18mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, or 60mm, etc.
Preferably, the pulverized lignite has a particle size of 6mm or less, for example, 1mm, 2mm, 3mm, 4mm, 5mm, or 6 mm.
In a second aspect, the present invention provides a method for producing a briquette according to the first aspect, comprising the steps of:
(1) mixing raw materials comprising pulverized lignite and grass of Gramineae with water to obtain a pasty mixture;
(2) extruding and forming the paste mixture obtained in the step (1) to obtain a wet blank;
(3) and (3) drying the wet blank obtained in the step (2) to obtain the molded coal.
Preferably, the water in the step (1) is 5 to 20 parts by mass, for example, 5 parts, 8 parts, 10 parts, 12 parts, 15 parts, 18 parts or 20 parts by mass, based on 100 parts by mass of the pulverized lignite.
Preferably, the extrusion molding of step (2) is performed in a pellet molding apparatus.
Preferably, the extrusion forming temperature in the step (2) is 20-30 ℃, and the extrusion forming temperature is normal temperature.
Preferably, the drying temperature in step (3) is 80-100 ℃, such as 80 ℃, 82 ℃, 85 ℃, 88 ℃, 90 ℃, 92 ℃, 95 ℃, 98 ℃ or 100 ℃.
Preferably, the water content of the briquette obtained in step (3) is 5-20 wt%, such as 5 wt%, 8 wt%, 10 wt%, 12 wt%, 15 wt%, 18 wt% or 20 wt%.
As a preferable technical scheme of the invention, the preparation method of the briquette comprises the following steps:
(1) mixing raw materials comprising pulverized lignite and grass of Gramineae with 5-20 parts by mass of water to obtain a pasty mixture;
(2) extruding and forming the paste mixture obtained in the step (1) to obtain a wet blank;
(3) and (3) drying the wet blank obtained in the step (2) at the temperature of 80-100 ℃ to obtain the briquette with the water content of 5-20 wt%.
In a third aspect, the present invention provides the use of a briquette as defined in the first aspect as a fuel for steam locomotives, industrial metallurgy and domestic heating.
Compared with the prior art, the invention at least has the following beneficial effects:
1. the raw materials of the invention are wide in source, the low-level lignite and the cheap and easily available gramineous green grass are blended to generate the synergistic effect, so that the uniformity and the compactness of the lignite powder and the gramineous green grass component after integration are more outstanding compared with the composite additive artificially compounded in the prior art, and the obtained briquette has high heat value and high thermal stability, TS and the like+6The coal conveying system can reach more than 60 percent, has strong thermal shock resistance under the pressurization condition, reduces the transportation cost of coal, reduces risks such as spontaneous combustion, explosion and the like in the transportation process, increases the terminal utilization efficiency, saves energy, reduces consumption and has obvious economic benefit;
2. the briquette of the invention widens the application range of the lignite, can be effectively used in other fields of gasification, pyrolysis and the like, and effectively increases the additional value of the lignite.
Detailed Description
For the purpose of facilitating an understanding of the present invention, the present invention will now be described by way of examples. It should be understood by those skilled in the art that the examples are only for the purpose of facilitating understanding of the present invention and should not be construed as specifically limiting the present invention.
Example 1
A molded coal comprises 100 parts by mass of pulverized lignite and 20 parts by mass of grass of Gramineae which are integrally molded and are cylindrical particles with the diameter of 25mm and the length of 60 mm.
The preparation method comprises the following steps:
(1) mixing pulverized lignite, grass of Gramineae and 20 parts by mass of water to obtain a pasty mixture;
(2) adopting a granular forming device for the pasty mixture obtained in the step (1), and extruding and forming pulverized coal by extrusion through the extrusion force of the device to obtain a wet blank;
(3) and (3) drying the wet blank obtained in the step (2) at 100 ℃ by adopting a belt dryer to obtain the briquette with the water content of 5 wt%.
Example 2
A molded coal comprises 100 parts by mass of pulverized lignite, 4 parts by mass of grass family grass, 5 parts by mass of starch and 5 parts by mass of limestone, which are integrally molded, and the molded coal is cylindrical particles with the diameter of 2mm and the length of 2 mm.
The preparation method comprises the following steps:
(1) mixing pulverized lignite, grass of Gramineae, starch and limestone with 5 parts by mass of water to obtain a pasty mixture;
(2) adopting a granular forming device for the pasty mixture obtained in the step (1), and extruding and forming pulverized coal by extrusion through the extrusion force of the device to obtain a wet blank;
(3) and (3) drying the wet blank obtained in the step (2) at 80 ℃ by using a belt dryer to obtain the briquette with the water content of 20 wt%.
Example 3
A molded coal comprises 100 parts by mass of pulverized lignite, 10 parts by mass of grass, 10 parts by mass of tar, 5 parts by mass of syrup and 10 parts by mass of sodium humate, wherein the molded coal is cylindrical particles with the diameter of 10mm and the length of 12 mm.
The preparation method comprises the following steps:
(1) mixing pulverized lignite, grass of Gramineae, tar, slurry and sodium humate with 15 parts of water to obtain a pasty mixture;
(2) adopting a granular forming device for the pasty mixture obtained in the step (1), and extruding and forming pulverized coal by extrusion through the extrusion force of the device to obtain a wet blank;
(3) and (3) drying the wet blank obtained in the step (2) at 90 ℃ by adopting a belt dryer to obtain the molded coal with the water content of 10 wt%.
Comparative example 1
The difference from example 3 is that: grass of Gramineae was omitted.
Comparative example 2
The only difference from example 3 is that: grass of Gramineae is replaced by a mixture of wood fiber and lignin with equal mass (mass ratio of 1: 2).
Comparative example 3
The only difference from example 3 is that: replacing grass of Gramineae with wood fiber of equal quality.
Comparative example 4
The only difference from example 3 is that: replacing grass of Gramineae with lignin of equal quality.
Example 4
The only difference from example 3 is that: the shape of the briquette is replaced by a cake shape, the diameter is 120mm, and the thickness is 20 mm.
Example 5
The difference from example 1 is that the proportion of other components to lignite is different: 5 parts of grass, 3 parts of starch, 5 parts of tar, 2 parts of syrup, 2 parts of limestone and 5 parts of sodium humate.
Example 6
The difference from example 2 is that the content of other components in proportion to lignite is different: 20 parts of grass, 5 parts of starch, 10 parts of tar, 5 parts of syrup, 5 parts of limestone and 10 parts of sodium humate.
100 samples of the briquettes of each example were subjected to a thermal stability test. The test method comprises the following steps: taking a coal sample of 6-13mm, heating in a muffle furnace at (850 +/-15) ° for 30min in an isolated manner, weighing, sieving, and taking the percentage of the mass of the residual coke with the granularity larger than 6mm in the sum of the mass of the residual coke at each stage as a thermal stability index TS + 6. MeasuringAverage TS of each embodiment+6The results are shown in Table 1.
TABLE 1
| Sample (I) | TS+6 | Sample (I) | TS+6 |
| Example 1 | 60％ | Example 6 | 77％ |
| Example 2 | 65％ | Comparative example 1 | 16％ |
| Example 3 | 75％ | Comparative example 2 | 30％ |
| Example 4 | 62％ | Comparative example 3 | 20％ |
| Example 5 | 78％ | Comparative example4 | 22％ |
As can be seen from table 1, the present invention utilizes an organic complex composed of rich plant fibers, inorganic substances and organic substances, such as grass of Gramineae, which has a wide source and can be directly blended with low-rank lignite without deep processing, and the two components generate a synergistic effect, such that the thermal stability of lignite powder and grass of Gramineae after integration is achieved, and an effect that cannot be achieved by adding a mixture of wood fibers and lignin is obtained, such that the obtained briquette has high calorific value and high thermal stability, and has strong thermal shock resistance under a pressurized condition, high added value and significant economic benefit. In addition, on the premise of having the same formula, compared with cake-shaped briquette pressed and formed in the prior art, the briquette with the formula is designed into a cylindrical shape, so that the crushing of the briquette in the volatilization process during pressurization and heating is further reduced, the thermal shock resistance of the briquette is further improved, and the briquette is more suitable for practical application.
The applicant states that the present invention is illustrated by the above examples to show the detailed process equipment and process flow of the present invention, but the present invention is not limited to the above detailed process equipment and process flow, i.e. it does not mean that the present invention must rely on the above detailed process equipment and process flow to be implemented. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (7)
1. The briquette is characterized by comprising pulverized lignite and gramineous green grass which are integrally formed, wherein the pulverized lignite is counted by 100 parts by weight, and the gramineous green grass is counted by 5-12 parts by weight; the molded coal is cylindrical particles; the diameter of the briquette is 2-25 mm, and the length of the briquette is 2-60 mm;
the briquette is prepared by adopting the following method, and the method comprises the following steps:
(1) mixing raw materials comprising pulverized lignite and grass of Gramineae with water to obtain a pasty mixture;
(2) extruding and forming the paste mixture obtained in the step (1) to obtain a wet blank; the extrusion forming temperature is 20-30 ℃;
(3) drying the wet blank obtained in the step (2) to obtain the molded coal; the drying temperature is 80-100 ℃.
2. The briquette coal according to claim 1, wherein the briquette coal further comprises the following components in parts by mass based on 100 parts by mass of the pulverized lignite:
0-5 parts of starch, 0-10 parts of tar, 0-5 parts of syrup, 0-5 parts of limestone and 0-10 parts of sodium humate; and the mass parts of the components are not 0 at the same time.
3. The molded coal according to claim 1, wherein the pulverized lignite has a particle size of 6mm or less.
4. The briquette coal according to claim 1, wherein the water in the step (1) is 5-20 parts by mass based on 100 parts by mass of the pulverized lignite.
5. The briquette of claim 1, wherein the extrusion molding of step (2) is carried out in a pellet molding apparatus.
6. The briquette coal according to claim 1, wherein the briquette coal obtained in step (3) has a water content of 5-20 wt%.
7. Use of the briquette according to claim 1, as fuel for steam locomotives, industrial metallurgy and civil heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077531.9A CN108192679B (en) | 2018-01-26 | 2018-01-26 | Briquette and its preparation method and use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077531.9A CN108192679B (en) | 2018-01-26 | 2018-01-26 | Briquette and its preparation method and use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108192679A CN108192679A (en) | 2018-06-22 |
| CN108192679B true CN108192679B (en) | 2020-12-22 |
Family
ID=62590891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810077531.9A Active CN108192679B (en) | 2018-01-26 | 2018-01-26 | Briquette and its preparation method and use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108192679B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845954A (en) * | 2021-11-04 | 2021-12-28 | 青岛海通新材料科技发展有限公司 | Gasified briquette capable of being efficiently gasified and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5863304A (en) * | 1995-08-15 | 1999-01-26 | Western Syncoal Company | Stabilized thermally beneficiated low rank coal and method of manufacture |
| CN101649237A (en) * | 2009-09-25 | 2010-02-17 | 河北理工大学 | Resistance hole type molded coal |
| CN101910364A (en) * | 2007-12-26 | 2010-12-08 | 杰富意钢铁株式会社 | Method of producing ferro-coke |
| RU2468070C1 (en) * | 2011-06-29 | 2012-11-27 | Игорь Александрович Дерявский | Fuel briquette, and method for its obtaining |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503641B (en) * | 2009-03-04 | 2013-02-27 | 上海泽玛克敏达机械设备有限公司 | Heat pressing moulding process and equipment for lignite rich in water after drying process |
| CN102191101B (en) * | 2010-04-09 | 2013-08-14 | 神华集团有限责任公司 | Production method of biomass moulded coal |
| CN102899117A (en) * | 2012-11-01 | 2013-01-30 | 华东理工大学 | Slurry containing biomass and use thereof |
| CN103695067A (en) * | 2013-12-20 | 2014-04-02 | 云南省化工研究院 | Non-bonder forming method for lignite |
| CN106085535A (en) * | 2016-06-07 | 2016-11-09 | 北京神雾环境能源科技集团股份有限公司 | A kind of moulded coal and preparation method thereof |
-
2018
- 2018-01-26 CN CN201810077531.9A patent/CN108192679B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5863304A (en) * | 1995-08-15 | 1999-01-26 | Western Syncoal Company | Stabilized thermally beneficiated low rank coal and method of manufacture |
| CN101910364A (en) * | 2007-12-26 | 2010-12-08 | 杰富意钢铁株式会社 | Method of producing ferro-coke |
| CN101649237A (en) * | 2009-09-25 | 2010-02-17 | 河北理工大学 | Resistance hole type molded coal |
| RU2468070C1 (en) * | 2011-06-29 | 2012-11-27 | Игорь Александрович Дерявский | Fuel briquette, and method for its obtaining |
Non-Patent Citations (1)
| Title |
|---|
| 中国型煤专利技术分析;朱红龙;《洁净煤技术》;20130423(第2期);第23-27页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108192679A (en) | 2018-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2580307B1 (en) | Methods for the manufacture of fuel pellets and other products from lignocellulosic biomass | |
| CN110257575A (en) | It is a kind of that technique of the carbide for pulverized coal injection is prepared based on hydro-thermal reaction processing agriculture and forestry organic waste material | |
| CN105038891A (en) | Low-sulfur and environment-friendly coal and processing method thereof | |
| Zanjani et al. | PHYSICAL AND CHEMICAL PROPERTIES OF COAL BRIQUETTES FROM BIOMASS-BITUMINOUS BLENDS. | |
| CN108192679B (en) | Briquette and its preparation method and use | |
| KR20140068691A (en) | Method for preparation of semi-carbonized biomass pulverized fuel and pulverized fuel made therefrom | |
| Zarringhalam-Moghaddam et al. | Physical properties of solid fuel briquettes from bituminous coal waste and biomass | |
| KR101308397B1 (en) | Preparation method of wood solid-fuel having high heating value by semi-carbonization at low temperature | |
| CN205709883U (en) | A kind of preparation system of carbide | |
| CN110518243B (en) | Application of lignin in preparation of lithium battery graphite negative electrode material | |
| CN205709884U (en) | A kind of preparation system of carbide | |
| CN105950250A (en) | Environment-friendly and inflammable fuel rod and manufacturing process thereof | |
| CN107236560B (en) | Process for coking molding material containing low-rank coal, garbage and biomass | |
| CN102827659A (en) | Brown coal dust forming and quality improving method | |
| CN105885995A (en) | High-combustion-value fuel rod and manufacturing process thereof | |
| Amrullah et al. | Influence of composition and compaction pressure on the physical quality of wood residue and bottom ash mixture briquettes | |
| CN106929063B (en) | Low-rank coal forming process and briquette prepared by same | |
| CN110964581A (en) | Post-forming biomass fuel production method | |
| CN108913260B (en) | Biomass fuel particle | |
| CN112442403A (en) | Preparation method of biomass fuel | |
| CN115449416B (en) | Biomass fuel for calcium carbonate calcination and preparation method thereof | |
| CN115572454B (en) | Composite binder and application thereof in carbide slag pellets | |
| CN107236555B (en) | Process for improving quality of molding material containing low-rank coal, garbage and biomass | |
| CN206279177U (en) | The system that a kind of utilization pyrolysis char prepares formed coke | |
| KR890002776B1 (en) | Process for the preparation of solid fuel using peat as raw material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Briquette and its preparation method and Application Effective date of registration: 20210203 Granted publication date: 20201222 Pledgee: Fu Mingxia Pledgor: SHANGHAI ZEMAG MINDAC MACHINERY EQUIPMENT Co.,Ltd. Registration number: Y2021310000010 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210511 Granted publication date: 20201222 Pledgee: Fu Mingxia Pledgor: SHANGHAI ZEMAG MINDAC MACHINERY EQUIPMENT Co.,Ltd. Registration number: Y2021310000010 |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 201206 2 floor, 13 building, 27 Jinqiao Road, China (Shanghai) free trade pilot area, Pudong New Area, Shanghai. Patentee after: Zemak (Shanghai) Environmental Protection Energy Technology Co.,Ltd. Address before: Room AB, 22 / F, 138 Pudong Avenue, Pudong New Area (Shanghai) pilot Free Trade Zone, Shanghai 200120 Patentee before: SHANGHAI ZEMAG MINDAC MACHINERY EQUIPMENT Co.,Ltd. |