CN108192679A - A kind of moulded coal and its preparation method and application - Google Patents
A kind of moulded coal and its preparation method and application Download PDFInfo
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- CN108192679A CN108192679A CN201810077531.9A CN201810077531A CN108192679A CN 108192679 A CN108192679 A CN 108192679A CN 201810077531 A CN201810077531 A CN 201810077531A CN 108192679 A CN108192679 A CN 108192679A
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- moulded coal
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- lignite
- coal
- moulded
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- 239000003245 coal Substances 0.000 title claims abstract description 84
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003077 lignite Substances 0.000 claims abstract description 47
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 35
- 241000209504 Poaceae Species 0.000 claims abstract description 31
- 239000002817 coal dust Substances 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 210000001161 mammalian embryo Anatomy 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 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
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 239000008107 starch Substances 0.000 claims description 6
- 235000019698 starch Nutrition 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 239000006028 limestone Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000008188 pellet Substances 0.000 claims description 5
- 239000006188 syrup Substances 0.000 claims description 5
- 235000020357 syrup Nutrition 0.000 claims description 5
- 230000003137 locomotive effect Effects 0.000 claims description 2
- 238000005272 metallurgy Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000035939 shock Effects 0.000 abstract description 7
- 239000000654 additive Substances 0.000 abstract description 6
- 230000000996 additive effect Effects 0.000 abstract description 5
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 238000003860 storage Methods 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 230000002269 spontaneous effect Effects 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 5
- 229920005610 lignin Polymers 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000011269 tar Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920002522 Wood fibre Polymers 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 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
- 239000004484 Briquette Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 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
- 238000004140 cleaning Methods 0.000 description 1
- 238000000641 cold extrusion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process 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
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012216 screening 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
- 238000012430 stability testing Methods 0.000 description 1
- 238000010998 test method 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
Abstract
The present invention relates to a kind of moulded coal and its preparation method and application, the moulded coal includes integrally formed lignite coal dust and grass family green grass.Raw material sources of the present invention are extremely wide, the lignite of low order layer and grass family green grass cheap and easy to get, which are mixed, occurs synergistic effect making moulded coal after matching, so that the uniformity and compactness after integrated between lignite coal dust and grass family green grass component are more prominent compared to for the compound additive manually compounded in the prior art, the moulded coal of acquisition has high heating value and high thermal stability, and thermal shock resistance is strong under an increased pressure, it is easier to store and transport, greatly reduce weathering in lignite storage and transport process, spontaneous combustion equivalent risk, terminal utilization ratio increases, it is energy-saving, remarkable in economical benefits.Moulded coal of the present invention has widened the application range of lignite, and the other fields such as be effectively used for gasifying, be pyrolyzed, and is effectively increased the added value of lignite.
Description
Technical field
The present invention relates to coal chemical technologies, and in particular to a kind of moulded coal and its preparation method and application.
Background technology
Lignite also known as bavin coal are the minimum pit coals of degree of coalification.It is a kind of dark brown between peat and pitch coal
Color, lacklustre low-order coal, include the humic acid dissolved in lye.Oxygen content is high in coal.Chemical reactivity is strong, thermal stability
Difference, lump coal crush serious when heating.Easy-weathering goes bad, is broken blocking or even powdered in storage air.Chinese lignite large storage capacity,
It is distributed in the remote districts such as Inner Mongol, Xinjiang, Yunnan, directly transport leads to security risk due to its moisture is high, calorific value is low more
Greatly, of high cost, deficiency in economic performance, while application range is narrow due to its coal characteristic, it is more difficult in addition to directly burning to be applied to other
Field, if it is possible to to lignite resource it is efficient, make full use of, be not only able to alleviate China energy supply quagmire, and
The development of national economy can be driven.To recycling be the effective way for reducing lignite energy consumption, improving utilization ratio after lignite upgrading
Diameter, wherein drying and dehydrating upgrading are the main means of lignite upgrading.But during the dehydration process due to itself stress and applied mechanical
The effect of power can generate a large amount of coal dusts, cause its processing and utilization difficult.And the lignite after drying and upgrading is made outer adding additives
Moulded coal is a kind for the treatment of method of high-efficiency cleaning, can both improve the utilization rate of resource, reduce environmental pollution, and can also improve enterprise
The economic benefit and social benefit of industry.
CN104357121A discloses a kind of production method of lignite molding bonded, and lignite block is crushed to 3mm hereinafter, adding
Add the compound binding agent being made of polyvinyl alcohol, carboxymethyl cellulose and waterglass and water, after mixing, in machine for producing coal bars
Cold extrusion shaped, coal stick after molding is dry to moisture at 60~120 DEG C<Briquette prod is obtained after 10%.What the technology used
Consumption of binder is big, accounts for the 10%~35% of coal, of high cost.And as conventional Moulding Process of Brown Coal mode of the prior art, most
Moulded coal calorific intensity is not high made from end, and the easily broken powdery into before molding under heating condition, Dust Capacity is big during causing
And dust is thinner, so as to can not use, such as gasification, pyrolysis field, thermal shock resistance is poor under pressurized conditions, is that it practical is answered
With a big technical barrier urgently to be resolved hurrily.
Invention content
For drawback in the prior art, an object of the present invention is to provide a kind of moulded coal, raw material is simple and easy to get,
It is of low cost, there is high heating value and high thermal stability, and thermal shock resistance is strong under an increased pressure.
For this purpose, the present invention adopts the following technical scheme that：
In a first aspect, the present invention provides a kind of moulded coal, including integrally formed lignite coal dust and grass family green grass.
In this field, moulded coal is the proportioning as required by particular use using lignite coal dust as primary raw material, mechanical strength,
It is machined molding with shape size, with the coal finished product that some strength and size and shape are different.
" comprising " of the present invention, it is intended that it can also include other components, these other components in addition to the component
Assign the moulded coal different characteristics.In addition to this, " comprising " of the present invention, may be replaced by enclosed " for " or
" by ... form ".
In order to improve mechanical strength after molding in this field, it is also contemplated that being a kind of combustibles after green grass drying, usually
Tend to select extraction or artificial synthesized efficient additive lignin from plant to process lignite coal dust coal as binding agent
Molding, the present invention is by the use of grass family green grass as natural auxiliary material, compared to the binding agents such as lignin of the prior art, green grass
It is cheap and easy to get and with abundant plant fiber and inorganic matter, organic matter, grass family green grass of the present invention is a kind of common weeds,
It is wide to carry out source electrode, gathers materials on the spot without deep processing, green grass is actually the organic complex that each component is formed, by the lignite of low order layer
It mixes and matches with grass family green grass cheap and easy to get, the two acts synergistically so that between lignite coal dust and grass family green grass component
Uniformity and compactness after integration is more prominent compared to for the compound additive manually compounded in the prior art and green
The dried inflammability of grass is suppressed, and the moulded coal of acquisition has high heating value and high thermal stability, and heat resistanceheat resistant is rushed under an increased pressure
It is strong to hit ability, there is high added value, remarkable in economical benefits.
Preferably, it is 100 parts of meters according to the mass fraction of the lignite coal dust, the mass fraction of the grass family green grass is
5~20 parts, such as 5 parts, 8 parts, 10 parts, 12 parts, 15 parts, 18 parts or 20 parts etc..
Preferably, it is 100 parts of meters according to the mass fraction of the lignite coal dust, following mass parts is further included in the moulded coal
Several components：
0~5 part 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 etc.；It is burnt
Oil 0~10 part, 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 etc.；0~5 part of syrup, for example, 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 etc.；0~5 part of lime stone, for example, 0 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4
Part, 4.5 parts or 5 parts etc.；0~10 part of sodium humate, for example, 0 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5
Part, 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 etc.；And the mass fraction of each component
It is asynchronously 0.Further addition binding agent improves the cold strength of final moulded coal, and additive carbonizes especially in thermal histories
The carbon formed with coal is good for the connection that can strengthen between coal and coal, so as to which moulded coal be made to keep original form, reduces broken probability.
Preferably, the moulded coal is cylindrical pellet.Pie moulded coal compared to compression moulding in the prior art etc. other
The moulded coal of type, the moulded coal of the formula is designed as cylindric by the present invention, further improves the specific surface area of moulded coal, is pressurizeing
Be conducive to the rapid volatilization of volatilizable object in processing and/or thermal histories, so as to reduce moulded coal be heated it is broken in volatilization process, into
One step improves moulded coal thermal shock resistance, is more suitable for practical application.
Preferably, a diameter of 2~25mm of the moulded coal, for example, 2mm, 5mm, 10mm, 12mm, 15mm, 18mm, 20mm,
22mm or 25mm etc., length be 2~60mm, such as 2mm, 5mm, 10mm, 12mm, 15mm, 18mm, 20mm, 25mm, 30mm,
35mm, 40mm, 45mm, 50mm, 55mm or 60mm etc..
Preferably, the grain size of the lignite coal dust is 6mm hereinafter, such as 1mm, 2mm, 3mm, 4mm, 5mm or 6mm.
Second aspect, the present invention provides a kind of preparation method of moulded coal as described in relation to the first aspect, including such as step：
(1) raw material including lignite coal dust and grass family green grass with water is mixed, obtains paste mixture；
(2) by paste mixture extrusion forming obtained by step (1), wet embryo is obtained；
(3) wet embryo obtained by drying steps (2), obtains moulded coal.
Preferably, it is 100 parts of meters according to the mass fraction of the lignite coal dust, the mass fraction 5 of step (1) described water~
20 parts, such as 5 parts, 8 parts, 10 parts, 12 parts, 15 parts, 18 parts or 20 parts etc..
Preferably, step (2) described extrusion forming carries out in granular molding machine.
Preferably, the temperature of step (2) described extrusion forming is 20~30 DEG C, belongs to room temperature.
Preferably, the temperature of step (3) described drying be 80~100 DEG C, such as 80 DEG C, 82 DEG C, 85 DEG C, 88 DEG C, 90 DEG C,
92 DEG C, 95 DEG C, 98 DEG C or 100 DEG C etc..
Preferably, the water content of moulded coal obtained by step (3) is 5~20wt%, for example, 5wt%, 8wt%, 10wt%,
12wt%, 15wt%, 18wt% or 20wt% etc..
As currently preferred technical solution, the preparation method of the moulded coal, including such as step：
(1) raw material including lignite coal dust and grass family green grass with the water of 5~20 mass parts is mixed, obtains paste mixing
Material；
(2) by paste mixture extrusion forming obtained by step (1), wet embryo is obtained；
Wet embryo obtained by (3) 80~100 DEG C of drying steps (2) obtains the moulded coal that water content is 5~20wt%.
The third aspect, the present invention provide the purposes of moulded coal as described in relation to the first aspect, the moulded coal be used as steam locomotive fuel,
Industry metallurgy fuel and domestic heating fuel.
Compared with prior art, the present invention at least has the advantages that：
1. raw material sources of the present invention are extremely wide, the lignite of low order layer and grass family green grass cheap and easy to get mix after matching and cooperate with
Effect so that the uniformity and compactness after integrated between lignite coal dust and grass family green grass component are compared in the prior art
More prominent for the compound additive manually compounded, the moulded coal of acquisition has high heating value and high thermal stability, TS+6Up to 60%
More than, and thermal shock resistance is strong under an increased pressure, the transportation cost of coal reduces, and reduces spontaneous combustion, explosion etc. in transportational process
Risk, terminal utilization ratio increase, energy-saving, remarkable in economical benefits；
2. moulded coal of the present invention has widened the application range of lignite, the other fields such as be effectively used for gasifying, be pyrolyzed, effectively
Increase the added value of lignite.
Specific embodiment
Of the invention for ease of understanding, it is as follows that the present invention enumerates embodiment.Those skilled in the art are it will be clearly understood that the implementation
Example is used only for helping to understand the present invention, is not construed as the concrete restriction to the present invention.
Embodiment 1
A kind of moulded coal is diameter including integrally formed 100 mass parts lignite coal dust and 20 mass parts grass family green grass
The cylindrical pellet of 25mm, long 60mm.
Preparation method includes the following steps：
(1) lignite coal dust and grass family green grass with 20 mass parts water are mixed, obtains paste mixture；
(2) paste mixture obtained by step (1) using granular molding machine, is passed through into the extruding force of device so that coal dust
Extrusion molding extrusion forming, obtains wet embryo；
(3) using wet embryo obtained by 100 DEG C of drying steps (2) of band drier, the moulded coal that water content is 5wt% is obtained.
Embodiment 2
A kind of moulded coal, including integrally formed 100 mass parts lignite coal dust and 4 mass parts grass family green grass and 5 mass
Part starch and 5 mass parts lime stones, this moulded coal is diameter 2mm, the cylindrical pellet of long 2mm.
Preparation method includes the following steps：
(1) lignite coal dust, grass family green grass, starch, lime stone with the water of 5 mass parts are mixed, obtains paste mixture；
(2) paste mixture obtained by step (1) using granular molding machine, is passed through into the extruding force of device so that coal dust
Extrusion molding extrusion forming, obtains wet embryo；
(3) using wet embryo obtained by 80 DEG C of drying steps (2) of band drier, the moulded coal that water content is 20wt% is obtained.
Embodiment 3
A kind of moulded coal, including integrally formed 100 mass parts lignite coal dust and 10 mass parts grass family green grass and 10 matter
Part tar, 5 mass parts syrup and 10 mass parts sodium humates are measured, this moulded coal is diameter 10mm, the cylindrical pellet of long 12mm.
Preparation method includes the following steps：
(1) it by lignite coal dust, grass family green grass, tar, slurry and sodium humate, is mixed with 15 parts of water, obtains paste mixing
Material；
(2) paste mixture obtained by step (1) using granular molding machine, is passed through into the extruding force of device so that coal dust
Extrusion molding extrusion forming, obtains wet embryo；
(3) using wet embryo obtained by 90 DEG C of drying steps (2) of band drier, the moulded coal that water content is 10wt% is obtained.
Comparative example 1
With embodiment 3 difference lies in：Save grass family green grass.
Comparative example 2
With differing only in for embodiment 3：Grass family green grass such as is replaced at the wood fibre of quality and the lignin (quality
Than being 1:2) mixture.
Comparative example 3
With differing only in for embodiment 3：Grass family green grass is replaced with etc. to the wood fibre of quality.
Comparative example 4
With differing only in for embodiment 3：Grass family green grass is replaced with etc. to the lignin of quality.
Embodiment 4
With differing only in for embodiment 3：The shape of moulded coal replaces with pie, a diameter of 120mm, thickness 20mm.
Embodiment 5
Difference lies in different from the other components content of lignite proportioning with embodiment 1：5 parts of grass family green grass, starch 3
Part, 5 parts of tar, 2 parts of syrup, 2 parts of lime stone, 5 parts of sodium humate.
Embodiment 6
Difference lies in different from the other components content of lignite proportioning with embodiment 2：20 parts of grass family green grass, starch 5
Part, 10 parts of tar, 5 parts of syrup, 5 parts of lime stone, 10 parts of sodium humate.
Take 100 progress heat stability testings of moulded coal sample of each embodiment.Test method is：6-13mm coal samples are taken,
The muffle furnace isolation air heating 30min of (850 ± 15) °, weighs, screening, is accounted for residual burnt quality of the granularity more than 6mm at different levels residual
The percentage of burnt quality sum is as thermal stability index TS+6.Each embodiment is measured to be averaged TS+6It arranges in table 1.
Table 1
| Sample | TS+6 | Sample | TS+6 |
| Embodiment 1 | 60% | Embodiment 6 | 77% |
| Embodiment 2 | 65% | Comparative example 1 | 16% |
| Embodiment 3 | 75% | Comparative example 2 | 30% |
| Embodiment 4 | 62% | Comparative example 3 | 20% |
| Embodiment 5 | 78% | Comparative example 4 | 22% |
As it can be seen from table 1 the present invention is formed using this abundant plant fiber of grass family green grass and inorganic matter, organic matter
Organic complex, not only source is wide for grass family green grass, and directly mixes and match with the lignite of low order layer without deep processing, the two hair
Raw synergistic effect so that it is wooden to achieve addition for the thermal stability after integrated between lignite coal dust and grass family green grass component
The effect that the mixture of fiber and lignin is unable to reach, the moulded coal of acquisition have high heating value and high thermal stability, and adding
Thermal shock resistance is strong under the conditions of pressure, has high added value, remarkable in economical benefits.In addition, under the premise of with same recipe,
Compared to the pie moulded coal of compression moulding in the prior art, the present invention moulded coal of the formula is designed as it is cylindric, further
It is broken in volatilization process when reducing moulded coal pressurization, being heated, moulded coal thermal shock resistance is further improved, being more suitable for reality should
With.
Applicant states that the present invention illustrates the detailed process equipment of the present invention and technological process by above-described embodiment,
But the invention is not limited in above-mentioned detailed process equipment and technological processes, that is, it is above-mentioned detailed not mean that the present invention has to rely on
Process equipment and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention,
The addition of equivalence replacement and auxiliary element to each raw material of product of the present invention, selection of concrete mode etc. all fall within the present invention's
Within protection domain and the open scope.
Claims (10)
1. a kind of moulded coal, which is characterized in that including integrally formed lignite coal dust and grass family green grass.
2. moulded coal as described in claim 1, which is characterized in that counted according to the mass fraction of the lignite coal dust for 100 parts, institute
The mass fraction for stating grass family green grass is 5~20 parts.
3. moulded coal as claimed in claim 1 or 2, which is characterized in that the mass fraction according to the lignite coal dust is 100 parts
It counts, the component of following mass fraction is further included in the moulded coal：
0~5 part of starch, 0~10 part of tar, 0~5 part of syrup, 0~5 part of lime stone, 0~10 part of sodium humate；And each described group
It is 0 during the mass fraction difference divided.
4. such as claims 1 to 3 any one of them moulded coal, which is characterized in that the moulded coal is cylindrical pellet.
5. moulded coal as claimed in claim 4, which is characterized in that a diameter of 2~25mm of the moulded coal, length are 2~60mm.
6. moulded coal as claimed in claim 5, which is characterized in that the grain size of the lignite coal dust is below 6mm.
7. a kind of preparation method of the moulded coal as described in any one of claim 1~6, which is characterized in that including such as step：
(1) raw material including lignite coal dust and grass family green grass with water is mixed, obtains paste mixture；
(2) by paste mixture extrusion forming obtained by step (1), wet embryo is obtained；
(3) wet embryo obtained by drying steps (2), obtains moulded coal.
8. the preparation method of moulded coal as claimed in claim 7, which is characterized in that the mass fraction according to the lignite coal dust is
100 parts of meters, 5~20 parts of the mass fraction of step (1) described water.
9. the preparation method of moulded coal as claimed in claim 7 or 8, which is characterized in that step (2) described extrusion forming is granular
It is carried out in molding machine；
Preferably, the temperature of step (2) described extrusion forming is 20~30 DEG C；
Preferably, the temperature of step (3) described drying is 80~100 DEG C；
Preferably, the water content of moulded coal obtained by step (3) is 5~20wt%.
10. the purposes of moulded coal as described in any one of claim 1~6, which is characterized in that the moulded coal is fired as steam locomotive
Material, industry metallurgy fuel and domestic heating fuel.
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 true CN108192679A (en) | 2018-06-22 |
| CN108192679B 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) |
Cited By (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 |
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| 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 |
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| CN108192679B (en) | 2020-12-22 |
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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 |
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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. |