CN106062138B - Coal mixing material - Google Patents
Coal mixing material Download PDFInfo
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- CN106062138B CN106062138B CN201580012261.8A CN201580012261A CN106062138B CN 106062138 B CN106062138 B CN 106062138B CN 201580012261 A CN201580012261 A CN 201580012261A CN 106062138 B CN106062138 B CN 106062138B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
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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
- C10L5/02—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
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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
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/02—Treating solid fuels to improve their combustion by chemical means
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/24—Mixing, stirring of fuel components
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/28—Cutting, disintegrating, shredding or grinding
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Abstract
In order to cut down the cost of coke raw material, in the present invention, 1: 1~1: 5 weight ratio will be pressed as the ashless coal of the solvent extract of coal and steam coal, not heated mixing, as Giseeler fluidity more than 1.0 (Log ddpm), average coal mixing material of the maximum reflectivity more than 0.75 (%).
Description
Technical field
The present invention relates to the coal mixing materials for mixing the ashless coal and steam coal that are used as the solvent extract of coal.
Background technique
In the production using the steel of blast furnace, coking coal is heated into coke made of destructive distillation and is used as reducing agent.Here, being
The coke of manufacture high-quality, needs the coke coal blending using the high strong binding coal of caking property as main material.But strong bonding
Coal obtains difficult in future, it is possible to rapid rise of price.
It is therefore desirable to use inferior raw material (free-burning coal, weakly caking coal, steam coal) as coke raw material, to inhibit
The usage amount of strong binding coal, cuts down the cost of coke raw material.
In patent document 1, the manufacturing method for disclosing a kind of coke manufacture coking coal, be by colm and substantially
The mixed coal that ashless coal (mono- U of Ha イ パ, one Le: Hyper-coal) without ash content is constituted, is heated to the softening temperature of ashless coal
Du or more the method that thus manufactures.If the coke manufacture is used to use coking coal as coke raw material, it is able to suppress coke manufacture
Strong binding coal usage amount.
[existing technical literature]
[patent document]
[patent document 1] Japanese Laid-Open 2009-215454 bulletin
But because concocting merely the low inferior raw material of caking property in coke coal blending, coke coal blending
Caking property reduces, and coke strenth also reduces.Therefore, in usual operation, matched by the increasing of high-quality coking coal to adjust inferior raw material
The negative effect of blending bring, make typicalness required by coke coal blending character (volatile matter, average maximum reflectivity,
Giseeler fluidity) it is included in range appropriate and is managed.But in this method, with the increasing of the usage amount of inferior raw material
Add, the usage amount of the strong binding coal of high price is also required to increase, and the cost of coke raw material cannot be made to be cut down.
In addition, practical petroleum bonds material, although having high-adhesion to augment effect, there is system in output
About, it in addition, sulphur content is high, can be remained in coke.Here, remaining in iron if sulphur content contained in iron ore and coke increases
Sulphur content in water also increases, and there are problems that the load to desulfurization process process increases this.Therefore, right in order to avoid this problem
In the sulphur content of investment blast furnace, the upper limit is set.In addition, knowing that sulphur deteriorates the character of iron.These results suggested that petroleum bonds material to coke
The blending amount of charcoal coal blending is using several % as limit.In this way, making to be blended into coke use because the supplement of caking property has limitation
The amount increase of inferior raw material in coal blending is not easy to.
Summary of the invention
It is an object of the present invention to provide the coal mixing materials that one kind can cut down the cost of coke raw material.
Coal mixing material of the invention, which is characterized in that by the ashless coal and steam coal as the solvent extract of coal, press
It is not heated to mix according to 1: 1~1: 5 weight ratio, the Giseeler fluidity of mixed mixed coal be 1.0 (Log ddpm) with
On, average maximum reflectivity is 0.75 (%) or more.
Coal mixing material according to the present invention, can cut down the cost of coke raw material.
Detailed description of the invention
Fig. 1 is the schematic diagram of ashless coal manufacturing equipment.
Specific embodiment
Hereinafter, being illustrated while referring to attached drawing for the mode preferably implemented of the invention.
(composition of coal mixing material)
The coal mixing material of embodiments of the present invention, being will be the ashless coal of raw material and steam coal by 1: 1~1: 5 using coal
Weight ratio not heated mix.So-called ashless coal is the solvent extract of coal, be coal and solvent are mixed and heated and
Slurry is obtained, therefrom extraction dissolves in obtained from the coal ingredient of solvent.
(steam coal)
The steam coal of coal mixing material for present embodiment, in table 1, be belong to C~F2 coal classification bituminous coal,
Ub-bituminous coal and lignite.That is, the steam coal of present embodiment, be calorific value (dry ash free basis) (kcal/kg) 5800 or more simultaneously
Coal lower than 8400.
[table 1]
Here, calorific value (dry ash free basis) (kcal/ of Japanese Industrial Specifications (JIS M 1002:1978) defined
Kg), calculated based on following formula.
Calorific value (amendment dry ash free basis)=calorific value/(100-1.08 × ash content-moisture) × 100
In addition, fuel ratio is with fixed carbon divided by value obtained by volatile matter.Here, if by steam coal nitrogen etc. indifferent gas
High temperature is heated in body, then the pendant moiety and/or bridge portion for constituting the polymeric matrix of steam coal are cut off because of thermal decomposition,
Low boiling point component, CO, H of low molecular weight hydrocarbon etc.2External release Deng generation, with from gas form to steam coal particle.With gas
Form is discharged into the low boiling point component of these low molecular weight hydrocarbons of the outside of steam coal particle etc., CO, H2Deng referred to as steam coal
Volatile matter (VM) is indicated with butt (dry-base).In addition, so-called fixed carbon, is not waving among carbon contained in steam coal
Send out ingredient.
Calorific value (dry ash free basis) (kcal/kg) 5800 or more and lower than 8400 as bituminous coal, ub-bituminous coal and brown
The steam coal of coal is the coking coal etc. of coke PCI (pulverized coal injection of Xiang Gaolu), is the coal of boiler electric power, in table 1
In, than belong to B1, B2 coal divide bituminous coal, that is, than as coke coking coal strong binding coal, medium partially strong binding coal glue
Knot property is poor.
(ashless coal)
The ashless coal of coal mixing material for present embodiment is from being mixed and heated coal and the obtained slurry of solvent
In, extraction dissolves in obtained from the coal ingredient of solvent, refers to ash content in 5 weight % hereinafter, it is preferred that below in 3 weight %.?
This so-called " ash content " is the residual inorganic matter with 815 DEG C of heating coals and when being allowed to be ashed, which is silicic acid, aluminium oxide, oxygen
Change iron, lime, magnesia, alkali metal etc..In addition, ashless coal does not have a bit moisture.
Ashless coal its mobility, dilatancy are excellent, show very high effect as bonding material.Suitable ashless coal be by
The Ji Shi mobility of Ji Shi plastometer method (Gieseler Plastometer method) based on JIS M8801 defined is tried
Testing the highest fluidity (log MF) confirmed is 4.78 (Log ddpm) or more.In addition, solidification temperature is higher than 450 DEG C
It is suitable as ashless coal.
The coal of raw material as ashless coal, is not particularly limited, and the bituminous coal that extraction yield may be used high also can be used more
Cheap colm (ub-bituminous coal, lignite).Therefore, in the present embodiment, steam coal is used as the raw material of ashless coal.With pot
Furnace coal manufactures ashless coal as raw material, so that utilizing for the steam coal in the manufacture of coal mixing material be made to expand.In addition, as nothing
The raw material of culm uses steam coal, can manufacture ashless coal in the place of production of steam coal, and manufacture coal with the ashless coal and steam coal
Mixing material carries out the manufacture for being fabricated onto coal mixing material from ashless coal at a dass like this.
(manufacturing method of ashless coal)
Here, the manufacturing method for ashless coal is illustrated.The ashless coal manufacture of manufacturing method for ashless coal is set
Standby 100, as shown in Figure 1, in order from the upstream side of manufacturing process, having coal scuttle 1, solvent tank 2, slurry preparation vessel 3, delivery pump
4, preheater 5, extraction tank 6, gravitation settler 7 and solvent separator 8,9.
There is the manufacturing method of ashless coal extraction process, separation process and ashless coal to obtain process.Hereinafter, for each process
It is illustrated.In addition, in the present embodiment, the raw material as ashless coal uses steam coal.
(extraction process)
Extraction process is heating Mixture Density Networks and the obtained slurry of solvent, and extraction (being allowed to be dissolved in solvent) dissolves in solvent
Coal ingredient process.The extraction process is implemented in Fig. 1 by slurry preparation vessel 3, preheater 5 and extraction tank 6.
Coal as raw material is put into slurry preparation vessel 3 from coal scuttle 1, and puts into from solvent tank 2 to slurry preparation vessel 3 molten
Agent.Put into the coal and solvent in slurry preparation vessel 3, the slurry that the machine 3a of being stirred mixes to be made of coal and solvent.By
Slurry made of slurry preparation vessel 3 is modulated is fed into preheater 5 after being heated to determined temperature, is supplied by delivery pump 4
It is given to extraction tank 6, predetermined temperature of being withed while with blender 6a stirring is kept and extracted.It is dissolved in as extracting
The solvent of the coal ingredient of solvent can be applicable in aromatic solvent (solvent of hydrogen supply or non-hydrogen supply).
(separation process)
Separation process such as by settling methods, is separated by the obtained slurry of extraction process dissolved with can
It is dissolved in solid made of the solution of the coal ingredient of solvent and coal ingredient (solvent insoluble component, such as ash content) concentration insoluble in solvent
The process of body ingredient concentrate (solvent insoluble component concentrate).The separation process is implemented in Fig. 1 by gravitation settler 7.By
The slurry that extraction process obtains under the effect of gravity, is separated into the supernatant and solid as solution in gravitation settler 7
Ingredient concentrate.The supernatant on the top of gravitation settler 7 is sent to solvent separator 8, and is deposited to gravitation settler 7
The solid component concentrate of lower part be sent to solvent separator 9.
(ashless coal acquirement process)
Ashless coal obtain process, be make from the solution (supernatant) isolated via separation process solvent evaporation separation and
The process for obtaining ashless coal (HPC).The ashless coal, which obtains process, to be implemented in Fig. 1 by solvent separator 8.Through gravitation settler
7 solution isolated, are fed into solvent separator 8, and separation is evaporated from supernatant in 8 internal solvent of solvent separator.
From the method for separation solvent in solution (supernatant), it is able to use the general way of distillation, evaporation etc..From supernatant
Middle separation solvent can obtain the ashless coal (HPC) for being substantially free of ash content.
Ashless coal is practically free of ash content, shows no sign of moisture, shows calorific value more higher than coking coal.In addition, as refining
It is especially important quality for the raw material of iron coke, i.e. softening meltbility (mobility) is also greatly improved, even if burnt
Coal does not have softening meltbility, and obtained ashless coal (HPC) also has good softening meltbility.
In addition, solvent is separated from the separated solid component concentrate out of gravitation settler 7 in solvent separator 9,
It can obtain the extract residue (RC, also referred to as residual coal) of the solvent insoluble component concentration containing ash content etc..
(coal mixing material)
Then, the coal mixing material of present embodiment is illustrated.The above-mentioned inferior raw material containing steam coal is (non-
Binding coal, weakly caking coal, steam coal), than the bad adhesion of strong binding coal and medium partially strong binding coal as coke coking coal.
Therefore, using inferior raw material as coke raw material in use, need to improve the blending ratio of the strong binding coal in coke coal blending, with
The character (volatile matter, average maximum reflectivity, Giseeler fluidity) of typicalness required by coke coal blending is included in appropriate
Range.In short, the usage amount along with the inferior raw material in coke coal blending increases, the usage amount of the strong binding coal of high price is needed
Also increase, therefore the cost of coke raw material cannot be cut down.
In addition, progress is to augment caking property using practical petroleum bonding material in coke manufacture.But
The sulphur content that petroleum bonds material is high, remains in coke, increases the sulphur content for including in coke.On the other hand, it is entered blast furnace
Sulphur content be restricted.So the blending amount of the petroleum bonding material into coke coal blending is using several % as limit.Therefore, make
The amount increase for being blended into inferior raw material of the coke in coal blending is not easy to.
Therefore, ashless coal and steam coal are pressed 1: 1~1: 5 weight ratio, more preferably by the coal mixing material of present embodiment
It is not heated to mix by 1: 3~1: 5 weight ratio.With such weight ratio does not heat ashless coal and steam coal and carries out
Mixing, thus can make the Giseeler fluidity 1.0 (Log ddpm) of mixed mixed coal or more, more preferably 1.5 (Log
Ddpm more than).In addition, making the average maximum reflectivity 0.75 (%) of mixed coal or more.In addition, the Giseeler fluidity peace of mixed coal
The equal maximum reflectivity meaning is that the numerical value of ashless coal and steam coal contained in mixed coal is weighted average value respectively.Also
Have, preferably the Giseeler fluidity of mixed coal is lower than 4.0 (Log ddpm), more preferably less than 3.8 (Log ddpm).Additionally, it is preferred that mixed
The average maximum reflectivity of coal is lower than 1.2 (%) not, more preferably less than 1.0 (%).The property of obtained coal mixing material as a result,
Shape belongs to the division of B~D in table 2, the character etc. with general strong binding coal (general strong viscous) or medium partially strong binding coal
Together.
[table 2]
Here, the character of general strong binding coal (general strong viscous) or medium partially strong binding coal, volatilization is divided into 20~33
(quality %), average maximum reflectivity are 0.8~1.3 (%), and Giseeler fluidity is 1.5~4.0 (Log ddpm).In addition, flat
Equal maximum reflectivity (%), the formula based on Japanese Industrial Specifications (JIS M 8816:1992) defined calculate.
As above-mentioned, ashless coal its mobility, dilatancy are excellent, show very high effect as bonding material.Therefore, it is not added
Hot ashless coal and steam coal and mixed, can obtain possessing with good strong binding coal the mixed of same caking property
Coal.It is not heated and mix, the Ji Shi of mixed mixed coal moreover, ashless coal and steam coal to be pressed to 1: 1~1: 5 weight ratio
Fluidity is 1.0 (Log ddpm) or more, and average maximum reflectivity is 0.75 (%) or more.Thereby, it is possible to obtain with it is general
Strong binding coal (general strong viscous) and medium partially strong binding coal possess the coal mixing material of same character.It is used as coke raw material
Coal mixing material replaces strong binding coal, the usage amount of the strong binding coal in coke manufacture can be made to reduce, and can make coke
Increased with the amount for the steam coal for including in coal blending.In addition, because its sulphur content of ashless coal as steam coal, to coke with matching
The blending amount of ashless coal in coal is not from the limitation of sulphur content.Therefore, ashless coal will not heated and steam coal mixes
Coal mixing material is used as coke raw material, and the amount that can concoct the inferior raw material in coke coal blending can be made to increase.By
This, can be such that the cost of coke raw material reduces.The mixing of ashless coal and steam coal is not utilized heating means to add from outside
Heat.In addition, the case where possessing heat there is also coal concocted itself, temperature when mixing can about be in lower than 100 DEG C,
Lower than 60 DEG C etc..
In addition, ashless coal and steam coal, by coarse crushing in mixing or before mixing.Here, so-called coarse crushing, refers to crushing
It is 20mm or less to partial size.Ashless coal and steam coal can be put into pulverizer simultaneously, without while carrying out coarse crushing and add
Heat and mix, can also put into pulverizer respectively and respectively after coarse crushing, then with mixing ratio appropriate investment coal mixer, without adding
Heat and mix.In addition, ashless coal and steam coal are put into pulverizer simultaneously, the method mixed while coarse crushing, the two is more
It is equably mixed in together, therefore ashless coal is easy to be tightly attached to around the particle of steam coal.In addition, the partial size of coal whether
When the partial size of the such as the following verifying coal of 20mm, for example, using 1102 defined sieve test of JIS A.
Ashless coal shows the tendency more easily crushed than steam coal.In general, fine coal is easy fugitive dust.Separately
Outside, in general, through fine coal, low-temperature oxidation is easy to carry out, and it is possible to spontaneous combustions due to oxidation heat liberation.Therefore, will
Ashless coal and steam coal carry out coarse crushing, equably mixed in together both in mixing, and ashless coal is made to be tightly attached to steam coal
Around particle.It can inhibit fugitive dust and low-temperature oxidation as a result, so coal mixing material steadily can be taken care of or be transported.In addition,
Around the particle of the low steam coal of caking property, it is close to the high ashless coal of caking property, because the bond effect of ashless coal is high, institute
Can be improved the caking property of coal mixing material.
In addition, coal mixing material is as coke coking coal in use, the pulverizer subsidiary by coke-fired furnace, is crushed to one
As coke coal blending granularity (partial size is that 3mm shared ratio below is whole 80 weight % or so).
In addition, the coal of the raw material as ashless coal is steam coal as above-mentioned.It is the ashless coal of raw material by not heating boiler coal
The coal mixing material mixed with steam coal is used as coke raw material, thus uses the amount of steam coal contained in coal blending into one
Step increases, therefore the cost of coke raw material can be made further to cut down.In addition, ashless in the manufacture of the place of production of steam coal like this
Coal manufactures coal mixing material with the ashless coal and steam coal, so from one gas of manufacture for being fabricated onto coal mixing material of ashless coal
It carries out with breathing out into, is able to suppress transportation cost etc., therefore can reduce manufacturing cost.
In addition, always when the place of production of steam coal carries out, preferably will from the manufacture for being fabricated onto coal mixing material of ashless coal
As extract residue obtained from by-product, the fuel and ashless coal manufacturing process in the power plant as scene in the manufacture of ashless coal
In fuel use.It is efficiently used as the extract residue of by-product as fuel, can reduce the manufacturing cost of ashless coal, into
And it can reduce the manufacturing cost of coal mixing material.
(mixing ratio evaluation)
Then, according to by representative 4 kinds of steam coals A, B, C, D one of and ashless coal, do not heat and mix
In the case of the character of coal mixing material that is contemplated to, the mixing ratio (weight ratio) of ashless coal and steam coal is evaluated.
The character of coal mixing material (divides the property of B~D with the strong binding coal (general strong viscous) or the character of medium partially strong binding coal of table 2
Shape) it is target, make Giseeler fluidity 1.0 (Log ddpm) or more, average maximum reflectivity is 0.75 (%) or more.
Firstly, transporting the ashless coal and steam coal manufactured from coal yard or warehouse, while pulverizer is put into, carried out on one side thick
Crushing makes partial size reach 20mm hereinafter, not heating on one side, and with the mixing of room temperature (25 DEG C or so) state.Alternatively, by ashless coal and
Steam coal puts into pulverizer respectively, coarse crushing and after so that partial size is reached 20mm or less, in a manner of becoming mixing ratio appropriate point
Not Tou Ru coal mixer, mix not heatedly.Then, calculate for representative 4 kinds of steam coals A, B, C, D one of and
That ashless coal is envisioned when not heating and mixing, assay value (volatile matter, average maximum of the typicalness as coke coking coal
Reflectivity, Giseeler fluidity), the mixing ratio of the character as target is evaluated.Ashless coal and 4 kinds of steam coal A, B, C,
The character of D is respectively displayed in table 3.
[table 3]
Firstly, mixing ratio (weight ratio) is made, with 6 phase changes, not heat ashless coal and steam coal A between 1: 1~1: 20
And mix, evaluate character.It is as the result is shown in table 4.
[table 4]
When mixing ratio (weight ratio) is 1: 1, average maximum reflectivity and Giseeler fluidity are in target zone, but volatile matter
Higher than 33% of the upper limit value as target zone.When mixing ratio (weight ratio) is 1: 3~1: 5, Giseeler fluidity is in target model
In enclosing, but volatile matter is higher than 33% of the upper limit value as target zone, and average maximum reflectivity is lower than as target zone
The 0.8% of lower limit value.When mixing ratio (weight ratio) is 1: 8, volatile matter is higher than 33% of the upper limit value as target zone, average
Maximum reflectivity and Giseeler fluidity are lower than the lower limit value of target zone.When mixing ratio (weight ratio) is 1: 10~1: 20, volatilization
Divide in target zone, but average maximum reflectivity and Giseeler fluidity are lower than the lower limit value of target zone.By judging above, 1:
1 mixing ratio (weight ratio) is good.
Then, mixing ratio (weight ratio) is made, with 6 phase changes, not heat ashless coal and steam coal B between 1: 1~1: 20
It is mixed, evaluates character.It is as the result is shown in table 5.
[table 5]
When mixing ratio (weight ratio) is 1: 1, average maximum reflectivity and Giseeler fluidity are in target zone, but volatile matter
Higher than 33% of the upper limit value as target zone.When mixing ratio (weight ratio) is 1: 3, volatile matter, average maximum reflectivity, base
Value in all target zones of family name's fluidity.When mixing ratio (weight ratio) is 1: 5~1: 20, volatile matter and average maximum reflection
Rate is the value in target zone, but Giseeler fluidity is lower than 1.5 (Log ddpm) of the lower limit value as target zone.But
When mixing ratio (weight ratio) is 1: 5, Giseeler fluidity is more than 1.0 (Log ddpm).By judging above, 1: 3 mixing ratio
(weight ratio) most preferably, 1: 1 and 1: 5 mixing ratio (weight ratio) is good.
Then, mixing ratio (weight ratio) is made, with 6 phase changes, not heat ashless coal and steam coal C between 1: 1~1: 20
It is mixed, evaluates character.It is as the result is shown in table 6.
[table 6]
When mixing ratio (weight ratio) is 1: 1, average maximum reflectivity and Giseeler fluidity are in target zone, but volatile matter
Higher than 33% of the upper limit value as target zone.When mixing ratio (weight ratio) is 1: 3~1: 20, Giseeler fluidity is in target model
In enclosing, but volatile matter is higher than 33% of the upper limit value as target zone, and average maximum reflectivity is lower than as target zone
The 0.8% of lower limit value.But mixing ratio (weight ratio), when being 1: 3 and 1: 5, average maximum reflectivity is more than 0.75 (%).Root
Upper judgement accordingly, 1: 1~1: 5 mixing ratio (weight ratio) are good.
Next, mixing ratio (weight ratio) is made, with 6 phase changes, not heat ashless coal and boiler between 1: 1~1: 20
Coal D is mixed, and character is evaluated.It is as the result is shown in table 7.
[table 7]
When mixing ratio (weight ratio) is 1: 1, average maximum reflectivity and Giseeler fluidity are in target zone, but volatile matter
Higher than 33% of the upper limit value as target zone.When mixing ratio (weight ratio) is 1: 3~1: 5, volatile matter, average maximum reflection
Value in all target zones of rate, Giseeler fluidity.When mixing ratio (weight ratio) is 1: 8~1: 20, volatile matter and it is average most
Big reflectivity is in target zone, but Giseeler fluidity is lower than 1.5 (Log ddpm) of the lower limit value as target zone.But
It is that when mixing ratio (weight ratio) is 1: 8 and 1: 10, Giseeler fluidity is 1.0 (Log ddpm) or more.Judged according to above, 1: 1
Most preferably, 1: 8 and 1: 10 mixing ratio (weight ratio) is good for~1: 5 mixing ratio (weight ratio).
By judging above, the character ashless coal same with general strong binding coal (general strong viscous) or medium partially strong binding coal
With the mixing ratio of steam coal, with 1: 1~1: 5 weight ratio meter, more preferably 1: 3~1: 5 weight ratio.
In addition, above-mentioned evaluation, carries out being to keep the weight ratio ashless coal of steam coal more, makes the weight ratio boiler of ashless coal
When coal is more, Giseeler fluidity and volatile matter increase, and become superfluous, much the character of breakaway, cannot expect to mix as coal
The effect of material.
(effect)
As previously discussed, in the present embodiment, ashless coal and steam coal are pressed to 1: 1~1: 5 weight ratio, it is not heated
Mixing and as coal mixing material.Ashless coal its mobility, dilatancy are excellent, show very high effect as bonding material.Cause
This, not heated mixing ashless coal and steam coal can obtain the mixed coal for possessing same caking property with good strong binding coal.
Moreover, making ashless coal and steam coal by 1: 1~1: 5 weight ratio, does not heat and mix, the Giseeler fluidity of mixed mixed coal
For 1.0 (Log ddpm) or more, average maximum reflectivity is 0.75 (%) or more.Thereby, it is possible to obtain and general strong bonding
Coal and medium partially strong binding coal have the coal mixing material of same character.By coal mixing material conduct instead of strong binding coal
Coke raw material use, can reduce coke manufacture in strong binding coal usage amount, and can make include in coke coal blending
Steam coal amount increase.Specifically, the blending amount of the coal mixing material into coke coal blending, can account for coke coal blending
The whole 10 mass % of mass %~50, preferably 20 mass of mass %~30 %.Ashless coal is used separately as addition material
When, it needs the character according to coal blending and adjusts appropriate amount, but coal mixing material of the invention, the appropriate amount of coal and ashless coal is preparatory
It is concocted, therefore blending appropriate amount can easily be added with coal blending for coke.In addition, its sulphur content of ashless coal and steam coal are same
Sample, therefore the blending amount of the ashless coal into coke coal blending is not from the limitation of sulphur content.Therefore, will not heat ashless coal and
The coal mixing material that steam coal mixes is used as coke raw material, can make that the poor quality in coke coal blending can be concocted
The amount of raw material increases.Thereby, it is possible to cut down the cost of coke raw material.
In addition, ashless coal and steam coal are by coarse crushing.Ashless coal has the tendency that more easily being crushed than steam coal.It is general next
It says, is easy fugitive dust through fine coal.In addition, in general, through fine coal, low-temperature oxidation is easy to carry out, therefore having can
It can spontaneous combustion due to oxidation heat liberation.Therefore, equably mixed in together both when mixing by ashless coal and steam coal coarse crushing, make
Ashless coal is tightly attached to around the particle of steam coal.Fugitive dust and low-temperature oxidation are inhibited as a result, so can steadily take care of
Or transport coal mixing material.In addition, it is close to the high ashless coal of caking property around the particle of the low steam coal of caking property,
Because the bond effect of ashless coal is high, the caking property of coal mixing material can be improved.
In addition, the coal of the raw material as ashless coal is steam coal.It is the ashless coal and boiler of raw material by not heating boiler coal
The coal mixing material that coal mixes is used as coke raw material, and the amount for the steam coal for thus including in coke coal blending is further
Increase, therefore the cost of coke raw material can be further decreased.In addition, manufacturing ashless coal in the place of production of steam coal like this, use
The ashless coal and steam coal manufacture coal mixing material, from the manufacture for being fabricated onto coal mixing material of ashless coal at a dass into
Row, is able to suppress transportation cost etc., therefore can cut down manufacturing cost.
(modified embodiment of the present embodiment)
It this concludes the description of embodiments of the present invention, but be only to illustrate concrete example, be not particularly limited to the present invention, have
The composition etc. of body can be suitable for being designed change.In addition, effect and effect described in the mode of the implementation of invention, Bu Guoshi
Enumerate the optimal effect and effect generated by the present invention, the function and effect of the present invention, not by the side of implementation of the invention
Content described in formula limits.
The application is based on Japanese patent application (patent application 2014-072439), content filed on March 31st, 2014
It is quoted in this as reference.
[industrial availability]
Coal mixing material of the invention, the coking coal as coke manufacture is useful, can be manufactured inexpensively.
[symbol description]
1 coal scuttle
2 solvent tanks
3 slurry preparation vessels
3a blender
4 delivery pumps
5 preheaters
6 extraction tanks
6a blender
7 gravitation settlers
8,9 solvent separator
100 ashless coal manufacturing equipments
Claims (3)
1. a kind of coal mixing material, which is characterized in that by as the solvent extract of coal and ash content below 5 weight % without silk
The ashless coal of milli moisture with as according to dry ash free basis standard in terms of kcal/kg calorific value 5800 or more and be lower than 8400 coal
Steam coal by 1:1~1:5 weight ratio it is not heated mix, the Giseeler fluidity Log ddpm of mixed mixed coal is
1.0 or more, average maximum reflectivity is 0.75% or more.
2. coal mixing material according to claim 1, which is characterized in that thick as the ashless coal and the steam coal
Made of crushing.
3. coal mixing material according to claim 1 or 2, which is characterized in that described in the raw material as the ashless coal
Coal is steam coal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-072439 | 2014-03-31 | ||
| JP2014072439A JP6266409B2 (en) | 2014-03-31 | 2014-03-31 | Coal mixture |
| PCT/JP2015/058387 WO2015151847A1 (en) | 2014-03-31 | 2015-03-19 | Coal blend |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106062138A CN106062138A (en) | 2016-10-26 |
| CN106062138B true CN106062138B (en) | 2019-05-14 |
Family
ID=54240178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580012261.8A Active CN106062138B (en) | 2014-03-31 | 2015-03-19 | Coal mixing material |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20170096603A1 (en) |
| JP (1) | JP6266409B2 (en) |
| KR (1) | KR20160127096A (en) |
| CN (1) | CN106062138B (en) |
| AU (1) | AU2015241616B2 (en) |
| CA (1) | CA2938960A1 (en) |
| WO (1) | WO2015151847A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110484288B (en) * | 2019-08-23 | 2020-07-03 | 山西沁新能源集团股份有限公司 | Coking and coal blending method |
| JP7316993B2 (en) | 2020-12-10 | 2023-07-28 | 株式会社神戸製鋼所 | Method for producing ashless coal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101233211A (en) * | 2005-07-19 | 2008-07-30 | 关西热化学株式会社 | Process for production of coke and process for production of pig iron |
| WO2014007184A1 (en) * | 2012-07-06 | 2014-01-09 | 株式会社神戸製鋼所 | Coke and method for producing same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461627A (en) * | 1981-12-18 | 1984-07-24 | Hitachi, Ltd. | Upgrading method of low-rank coal |
| JP5241105B2 (en) * | 2007-01-16 | 2013-07-17 | 株式会社神戸製鋼所 | Coke manufacturing method and pig iron manufacturing method |
| JP5280072B2 (en) * | 2008-03-10 | 2013-09-04 | 株式会社神戸製鋼所 | Coke production method |
| JP5438277B2 (en) | 2008-03-11 | 2014-03-12 | 株式会社神戸製鋼所 | Coke manufacturing method and pig iron manufacturing method |
| JP5247193B2 (en) * | 2008-03-17 | 2013-07-24 | 株式会社神戸製鋼所 | Coke manufacturing method and pig iron manufacturing method |
| JP5444709B2 (en) * | 2008-12-24 | 2014-03-19 | 新日鐵住金株式会社 | Method for producing blast furnace coke |
| JP6607366B2 (en) * | 2013-05-08 | 2019-11-20 | 国立研究開発法人産業技術総合研究所 | High strength and highly reactive coke production method from non-slightly caking coal |
-
2014
- 2014-03-31 JP JP2014072439A patent/JP6266409B2/en active Active
-
2015
- 2015-03-19 US US15/127,900 patent/US20170096603A1/en not_active Abandoned
- 2015-03-19 CA CA2938960A patent/CA2938960A1/en not_active Abandoned
- 2015-03-19 AU AU2015241616A patent/AU2015241616B2/en not_active Ceased
- 2015-03-19 KR KR1020167026654A patent/KR20160127096A/en not_active Application Discontinuation
- 2015-03-19 CN CN201580012261.8A patent/CN106062138B/en active Active
- 2015-03-19 WO PCT/JP2015/058387 patent/WO2015151847A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101233211A (en) * | 2005-07-19 | 2008-07-30 | 关西热化学株式会社 | Process for production of coke and process for production of pig iron |
| WO2014007184A1 (en) * | 2012-07-06 | 2014-01-09 | 株式会社神戸製鋼所 | Coke and method for producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6266409B2 (en) | 2018-01-24 |
| JP2015193740A (en) | 2015-11-05 |
| US20170096603A1 (en) | 2017-04-06 |
| WO2015151847A1 (en) | 2015-10-08 |
| CA2938960A1 (en) | 2015-10-08 |
| CN106062138A (en) | 2016-10-26 |
| AU2015241616B2 (en) | 2017-06-08 |
| KR20160127096A (en) | 2016-11-02 |
| AU2015241616A1 (en) | 2016-09-29 |
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