CN110536955A - Moulded coal composition and moulded coal comprising it - Google Patents
Moulded coal composition and moulded coal comprising it Download PDFInfo
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- CN110536955A CN110536955A CN201880025869.8A CN201880025869A CN110536955A CN 110536955 A CN110536955 A CN 110536955A CN 201880025869 A CN201880025869 A CN 201880025869A CN 110536955 A CN110536955 A CN 110536955A
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- moulded coal
- coal
- cellulose
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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
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
-
- 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
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
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- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The present invention relates to a kind of moulded coal composition and comprising its moulded coal, the moulded coal composition includes coal and cellulose ether, and the moisture content of the coal is 5~70% and calorific value is 1,000~5,000kcal/kg.According to the present invention, even if being also capable of providing hydrophobicity, calorific value and the excellent moulded coal of compressive strength using the coal feedstock with high moisture content and lower calorific value in above range limit.
Description
Technical field
The present invention relates to a kind of moulded coal composition and comprising its moulded coal, more specifically, be related to it is a kind of by with moisture
The coal that content is 5~70% and calorific value is 1,000~5,000kcal/kg includes cellulose ether together and can manufacture thin
The moulded coal composition of aqueous, calorific value and the excellent moulded coal of compressive strength and moulded coal comprising it.
Background technique
In general, coal is divided into peat (peat), brown coal (brown coal), lignite (lignite), ub-bituminous coal
(sub-bituminous coal), bituminous coal (bituminous coal) and anthracite (anthracite) these grades, cigarette
Coal is again split into low-volatite bituminous coal, medium volatile bituminous coal and high-volatile bituminous coal, and anthracite is divided into semianthractie, smokeless
Coal, in (Meta) anthracite and graphite-like anthracite.Wherein, brown coal, lignite and ub-bituminous coal are regarded as rudimentary coal (Low Rank
Coal:LRC), bituminous coal, anthracite etc. are classified as advanced coal (High Rank Coal:HRC).
In order to carry out thermal power generation and making above-mentioned coal directly burn, need using high-rank coals such as anthracite or bituminous coal
Charcoal, but the expensive and reserves of this advanced coal are also few.For this purpose, carrying out reserves relative abundance and cheap
Rudimentary coal (LRC:Low Rank Coal) is applied to the research of the scheme of thermal power generation industry.
But there are more limitations when calorific value is low is used for thermal power generation in the case where rudimentary coal, need
The high fever quantification technique of calorific value of bituminous coal level can be generated by facilitating rudimentary coal.Moreover, rudimentary coal is because of moisture
Content is high and weight and volume is also not easy to carry greatly.Also, the rudimentary coal as lignite is due to more than stomata and a large amount of
Comprising volatile matter, therefore rises with the temperature that the accumulation of the heat of adsorption as caused by the adsorption-desorption of moisture generates and waved by occupying
Spontaneous combustion caused by there is a possibility that of considerable amount of oxygen functional group in hair point improves, using being restricted.
In order to solve this problem, it is proposed in patent document 1 (Korean Patent Publication No. 10-1209465) low
The method of modifying of grade coal, the method for modifying can increase coal and the high palm slag of calorific value is coated to coal surface
Average heat production, and reduce a possibility that moisture is adsorbed onto coal again and spontaneous combustion possibility.Specifically, patent document
The method of modifying that the coal of palm slag is utilized involved in 1 includes: the step of (a) crushes coal；(b) in the coal through crushing
The step of palm slag (Palm residue) is equably mixed in charcoal；(c) it melts and the mixed palm slag of the coal and applies
Drying-stabilization step that the moisture in coal is dried while being applied to coal surface；(d) steady by above-mentioned drying-
Surely change the cooling step of the coal of step；And the step of (e) coal for passing through the cooling step is formed, technique
It is considerably complicated.
In addition, recording the moisture remained in coal in above-mentioned steps (e) and palm slag in above patent document 1
The effect of forming adhesive is played, but there is the problem of compressive strength of the moulded coal so manufactured is remarkably decreased.Therefore, according to
The moulded coal that patent document 1 manufactures is being laminated to inside the container for having a case that specific modality as storage tank and melting furnace
Under, damaged due to itself loading or a possibility that being crushed during transfer, is high, this is possible to that dust occurrence cause can be become.
Scheme as the intensity for improving moulded coal as a result, in (the Korean Patent Publication No. 10- of patent document 2
No. 1634069) in propose following scheme: via forming after mixing micro mist charcoal made of through crushing coal and adhesive
Journey and manufacture moulded coal.At this point, properly mixing in patent document 2 as described adhesive using syrup and caramel.
But syrup has supply and demand, quality caused by harvest unstable and the various problems such as stink.Also, according to patent
Document 2 manufacture moulded coal because hydrophobicity reduce due to contact with moisture when moisture content get higher, the calorific value with the moulded coal of contact with moisture
It significantly reduces.
That is, if the method only proposed using existing literature, with can not be low for example with 5 by calorific value,
The coal of 000kcal/kg calorific value below is used as raw material come compressive strength while providing hydrophobicity and excellent heat generation
The problem of excellent moulded coal.
Therefore, it is necessary to carry out the research about the scheme for providing the moulded coal composition that can manufacture following moulded coal, the type
Although coal will have 5,000kcal/kg lower calorific value below coal be used as raw material, due to hydrophobicity is excellent with moisture
Also 6 are showed after contact, the golf calorific value of 000kcal/kg or more, while showing excellent compressive strength.
Patent document 1:KR101209465B
Patent document 2:KR101634069B
Summary of the invention
The present invention provides a kind of moulded coal composition, and the moulded coal composition is by being 5~70% and calorific value with moisture content
Coal for 1,000~5,000kcal/kg includes cellulose ether together and is capable of providing hydrophobicity, calorific value and compressive strength
Excellent moulded coal.
In addition, the present invention provides a kind of moulded coal comprising the moulded coal composition.
As described above in order to solve the problems, such as, the present invention provides a kind of moulded coal composition, includes coal and cellulose ether, institute
The moisture content for stating coal is 5~70% and calorific value is 1,000~5,000kcal/kg.
It can be 1.2~9 times of the coal by the calorific value of the moulded coal of moulded coal composition manufacture, by the moulded coal
Adsorption rate may be greater than 0% and 5% or less to the moisture of the moulded coal of composition manufacture calculated according to the following formula again.
Moisture adsorption rate (%)=A again2-A1
In above formula, A1(%) indicates the moisture content (%) of the moulded coal after just manufacture, A2(%) expression impregnates 24 in water
The moisture content (%) of moulded coal taken out after hour, the moisture content be using infrared moisture meter (KETT company,
FD-720) the value measured in the state of 20 minutes, 150 DEG C.
It is greater than 0mm and 4mm micro mist charcoal below that the coal, which can be partial size,.
On the basis of the aqueous solution of 2.0 weight % concentration, fly (Brookfield, LV) viscosimeter at 20 DEG C using rich strangle
And when being measured under conditions of 20rpm, the viscosity (Brookfield Viscometer) of the cellulose ether can be 100
~100,000cps.
Also, the cellulose ether may include selected from by alkylcellulose (alkyl cellulose), hydroxy alkyl cellulose
(hydroxyalkyl cellulose), hydroxyalkylalkylcellulose (hydroxyalkyl alkyl cellulose) and alkyl
One or more of the group that alkyl-hydroxyalkylcelluloswith (alkyl alkyl hydroxylalkyl cellulose) is constituted, example
Such as comprising selected from by methylcellulose (methyl cellulose；MC), hydroxyethyl cellulose (hydroxyethyl
cellulose；HEC), hydroxypropyl cellulose (hydroxypropyl cellulose；HPC), hydroxyethylmethylcellulose
(hydroxyethyl methyl cellulose；HEMC), hydroxypropyl methyl cellulose (hydroxypropyl methyl
cellulose；HPMC), ethylhydroxyethylcellulose (ethyl hydroxyethyl cellulose；) and Methylethyl EHEC
Hydroxyethyl cellulose (methylethyl hydroxyethyl cellulose；MEHEC one or more of the group) constituted.
On the basis of the coal of 100 parts by weight, the content of the cellulose ether can be 0.1~10.0 parts by weight.
Moulded coal composition according to the present invention can further include water.
In addition, the present invention is capable of providing a kind of moulded coal comprising the moulded coal composition, the moisture content of the moulded coal is 0
~20%, calorific value 6,000~9,000kcal/kg.
Moisture content is maximum of up to 70%, calorific value down to 5,000kcal/kg by moulded coal composition according to the present invention
Coal below is used as raw material, includes cellulose ether as adhesive, so as to manufacture hydrophobicity, calorific value and compressive strength
Excellent moulded coal.
Specifically, moulded coal provided by the present invention is able to suppress in transfer and management process etc. because hydrophobicity is excellent
Moisture adsorbs again and spontaneous combustion possibility.Also, moulded coal provided by the present invention shows higher calorific value, therefore preferably in fire
The problem of being used in power power generation, and compressive strength is excellent, damaged and dust will not be caused to occur.
In particular, in accordance with the invention it is possible to being mentioned using the cheap lower-grade feedstock coal with high-moisture and lower calorific value
For showing the 6 of advanced coal level, the moulded coal of the golf calorific value of 000kcal/kg or more, so as to ensure price competition
Power.
Detailed description of the invention
Fig. 1 is to indicate the photo after the moulded coal that will be manufactured by embodiment 1 to 3 impregnates 1 hour in the beaker for filling water.
Fig. 2 is to indicate the photo after the moulded coal that will be manufactured by comparative example 1 to 4 impregnates 1 hour in the beaker for filling water.
Specific embodiment
The present invention relates to a kind of moulded coal composition and comprising its moulded coal, the moulded coal composition include moisture content be 5~
70% and calorific value be 1,000~5,000kcal/kg coal and cellulose ether.
Use as main material that moisture content is 5~70% and calorific value is 1 in moulded coal composition according to the present invention,
In the case where the coal of 000~5,000kcal/kg, in order to act effectively as thermal power generation moulded coal, realization is needed to show 6,
The high fever of the golf calorific value of 000kcal/kg or more quantifies, and needs to realize moisture adsorption preventing, spontaneous combustion inhibition or dust again
The high-quality of inhibition etc. occurs.For these furtherd investigate as a result, the present inventor confirms by using fibre
Plain ether is tieed up as adhesive and without other coal feedstock drying processes can using the coal of above-mentioned condition come
There is provided hydrophobicity and compressive strength while show higher calorific value excellent moulded coal, so as to complete the present invention.
As described above, coal used in the present invention is characterized in that, moisture content is 5~70%, calorific value 1,000
~5,000kcal/kg.
When the moisture content of the coal is greater than 70%, it is difficult to use for manufacturing thermal power generation because of excess moisture
The moulding process of the feed coal of moulded coal needs additional coal drying process, so that manufacturing expense, which occurs, improves problem.Separately
Outside, when using described there is the coal greater than 70% moisture content to prepare moulded coal in the case where no additional drying process
When, exist and be not used as thermal power generation moulded coal because the calorific value of the moulded coal finally obtained is low, and water due to hydrophobicity is low
It point adsorbs again and the problem of spontaneous combustion possibility improves, and compressive strength also declines.On the other hand, it is less than when by the moisture content
When 5% coal is used as feed coal, although calorific value with higher can be manufactured because the calorific value of coal itself is excellent
Moulded coal, but since the monovalent very high and moulded coal of coal itself is small and economical relative to the improvement effect of the calorific value of coal
Property decline.
Also, when the calorific value of the coal is less than 1,000kcal/kg, even with cellulose ether as adhesive,
What is produced is the moulded coal not up to as 6,000kcal/kg of calorific value required by thermal power generation moulded coal, therefore can not
It is applied in industrial field.On the other hand, it in the case where coal of the calorific value greater than 5,000kcal/kg, is passed through because at high cost
The decline of Ji property.
It can be 1.2~9 times of the coal by the calorific value of the moulded coal of moulded coal composition manufacture.In this way, by
In the case where moulded coal provided by the invention, it can be manufactured and be presented using the cheap lower-grade feedstock coal with lower calorific value
The moulded coal of the golf calorific value of advanced coal level out, it can be ensured that price competitiveness and it is preferred that.
Also, adsorption rate may be greater than 0% to the moisture of the moulded coal prepared by moulded coal composition calculated according to the following formula again
And 5% or less.
Moisture adsorption rate (%)=A again2-A1
In above formula, A1(%) indicates the moisture content (%) of the moulded coal after just manufacture, A2(%) expression impregnates 24 in water
The moisture content (%) of moulded coal taken out after hour, the moisture content be using infrared moisture meter (KETT company,
FD-720) the value measured in the state of 20 minutes, 150 DEG C.
Adsorption rate (%) refers to the moisture content of the moulded coal to take out after being impregnated into water 24 hours to the moisture again
(A2) in subtract just manufacture after moulded coal moisture content (A1) the value that calculates of mode, be by the way that formed can be with most volume
The environment of contact with moisture and the value for evaluating the moisture of moulded coal adsorption rate again.That is, it is excellent by the hydrophobicity of moulded coal produced by the present invention,
In being exposed to heavy rain or immersion etc. excessive contact with moisture environment under can also show 5% lower moisture below again
Adsorption rate, in transfer or management process with will not cause when contact with moisture with moisture content increase and generate moulded coal calorific value
Reduction problem.
In addition, in order to reduce moulded coal quality deviation, it is preferred to use the small and certain coal of partial size, such as the coal
It is greater than 0mm and 4mm micro mist charcoal below it is preferred that can be used.
The cellulose ether plays the adhesive effect for coal particle to be bonded to each other.The cellulose ether derives from
It is the one kind for making the cellulose derivative of etherification of hydroxyl groups of cellulose using etherifying agent as the cellulose of vegetable matter.
The cellulose ether can also be to measure excellent bonding effect less than syrup.In addition, compared with syrup, the cellulose
Ether is stablized in terms of supply and demand and price change rate, and storage and maintenance cost are cheap.Also, using the cellulose ether as bonding
In the case where agent use, have the advantages that also obtain the moulded coal for the intensity for having excellent without using strength reinforcing agent.
Specifically, the cellulose ether may include selected from fine by alkylcellulose (alkyl cellulose), hydroxyalkyl
Tie up plain (hydroxyalkyl cellulose), hydroxyalkylalkylcellulose (hydroxyalkyl alkyl cellulose) and
One of group that alkyl-alkyl hydroxy alkyl cellulose (alkyl alkyl hydroxylalkyl cellulose) is constituted with
On, such as can be used selected from by methylcellulose (methyl cellulose；MC), hydroxyethyl cellulose (hydroxyethyl
cellulose；HEC), hydroxypropyl cellulose (hydroxypropyl cellulose；HPC), hydroxyethylmethylcellulose
(hydroxyethyl methyl cellulose；HEMC), hydroxypropyl methyl cellulose (hydroxypropyl methyl
cellulose；HPMC), ethylhydroxyethylcellulose (ethyl hydroxyethyl cellulose；) and Methylethyl EHEC
Hydroxyethyl cellulose (methylethyl hydroxyethyl cellulose；MEHEC one or more of the group) constituted.
It can be used preferably as the cellulose ether and be selected from any one of HEMC and HPMC or their mixture.
It is further preferred that the methyl Replacement rate (DS) of the HEMC can be 18~32 weight %, ethoxy Replacement rate (MS) can be with
It is that the methyl Replacement rate (DS) of 2~14 weight %, the HPMC can be 18~32 weight %, hydroxypropyl Replacement rate (MS) can be with
It is 2~14 weight %.At this point, the methyl Replacement rate is higher, and the Replacement rate of hydroxypropyl or ethoxy is smaller, then hydrophobicity
It is higher.The Replacement rate of the methyl, ethoxy or hydroxypropyl is included in above-mentioned model in moulded coal composition according to the present invention
In the case that cellulose ether in enclosing is used as adhesive, forms hydrophobic gel structure and strengthen the interparticle bonding of coal
Power and form film, can finally obtain there is excellent hydrophobic moulded coal and it is preferred that.
Here, described " Replacement rate " this term refers to that chemical formula 1 described as follows constitutes each member for replacing body (R) like that
Ratio of the atomic weight summation of element in the atomic weight summation of the element for the repetitive unit for constituting the cellulose replaced.
Chemical formula 1
In above formula, R is-H independent of each other ,-CH3、-CH2CH2OH or-CH2CHOHCH3, n be 1 or more integer.
On the basis of the aqueous solution of 2.0 weight % concentration, fly (Brookfield, LV) viscosimeter at 20 DEG C using rich strangle
And when being measured under conditions of 20rpm, the viscosity (Brookfield Viscometer) of the cellulose ether can be 100
~100,000cps.When the viscosity includes within the above range, cellulose ether can be sufficient between assigning coal particle
Binding force, superior process efficiency can be showed and it is preferred that.In particular, when the cellulose ether viscosity be 5,000~
When 70,000cps, be capable of providing hydrophobicity, compressive strength and the excellent moulded coal of calorific value and it is further preferred that most preferably, the fibre
The viscosity for tieing up plain ether can be 10,000~60,000cps.
On the basis of the coal of 100 parts by weight, the content of the cellulose ether can be 0.1~10.0 parts by weight.
When the content of the cellulose ether includes within the above range, it can make that there is the low of rudimentary coal level in easy method
The coal of calorific value realizes that high fever quantization is horizontal to reach advanced coal.
The cellulose ether can show bonding force by melting.Specifically, cellulose ether is dissolved in is with water
In the polar solvent of representative.Be dissolved in the water as polar solvent as the high molecular cellulose ether with long-chain form and
Hydrogen bond is formed, viscosity is shown by the expansion process of pockets of macromolecular chain.In addition, later by water evaporation process come
Show bonding force.
Moulded coal composition according to the present invention can further include water as a result, and distillation preferably can be used as the water
Water.It may include the water within 50.0 parts by weight relative to the coal of 100 parts by weight.If the content of the water exists
Within above range, then it can obtain being easy using and there is the moulded coal composition uniformly formed.
In addition to this, the cellulose ether relative to 100 parts by weight, moulded coal composition according to the present invention can be wrapped further
Containing 10,000 parts by weight additional binder below.
It, can be by syrup, starch, gelatinized starch, modified starch, polyethylene glycol (PEG), poly- as the additional binder
Vinyl alcohol (PVA), polyacrylamide (PAM), sucrose, liquid glucose, Arabic gum, bassora gum (tragacanth gum),
Gelatin, alginic acid, polymethyl methacrylate, polyvinylpyrrolidone (PVP), Sodium Polyacrylate, polyvinyl methyl ethermaleic anhydride
(PLM), alginic acid, asphalt (ASPHALT), pitch (BITUMEN), casein (CASEIN), epoxy resin, wood pitch
(PITCH), polyamide, polyurethane and Pioloform, polyvinyl acetal etc. are individually or mixing is two or more uses.
In addition, the present invention provides a kind of moulded coal comprising the moulded coal composition.The moisture content of the moulded coal can be 0
~20%, calorific value can be 6,000~9,000kcal/kg.
In this way, not only itself moisture content is low for moulded coal provided by the present invention, and hydrophobicity is also very high and moisture again
Adsorption rate is no more than 5%.That is, in accordance with the invention it is possible to provide it is a kind of be exposed in transfer and management process in moisture also because
Moisture content hardly increases and presents the moulded coal of golf calorific value.
In addition, the calorific value of the moulded coal is the calorific value phase that is shown with the advanced coal of such as bituminous coal or anthracite etc.
Same higher level, therefore it is enough to act as thermal power generation moulded coal.
Also, the compressive strength of moulded coal provided by the present invention is excellent, therefore moulded coal having in such as storage tank and melting furnace
It is damaged caused by hardly occurring during being laminated or transfer inside the container of characteristic form because of itself loading.Therefore, energy
Dust occurs caused by enough inhibiting because of moulded coal breakage, and result can prevent environmental pollution caused by occurring because of dust.
It is 5 that the manufacturing method of this moulded coal according to the present invention, which can comprise the following steps that (1) is manufactured comprising moisture content,
~70% and calorific value be the coal of 1,000~5,000kcal/kg, cellulose ether and water mixture；And (2) make it is described
Mixture forms to manufacture moulded coal.
As an example of above-mentioned steps (1), dry blends can be manufactured adding cellulose ether into the coal
Later, water is added in Xiang Suoshu dry blends to manufacture wet mixed object.
As another example of above-mentioned steps (1), wet type can be manufactured adding cellulose ether solution into the coal
Mixture.At this point, the cellulose ether solution can be the solution comprising cellulose ether and solvent, the solvent can be water.
The coal can use without restriction as long as moisture content and calorific value with above range, such as excellent
Select the rudimentary coal that lignite or ub-bituminous coal level can be used.In the case where this rudimentary coal, in the past in order to high fever quantization and
It is required that complicated technique, but the present invention can only provide the high intensity with golf calorific value by simple mixing and moulding process
Moulded coal.
The coal can be with the micro mist charcoal greater than 0mm and 4mm partial size below, can pass through well known one at this time
As method come crush blocky coal and micro mist charcoal that use or purchase have crushed come using.
Also, the manufacturing method of moulded coal according to the present invention can further comprise to the type manufactured by above-mentioned steps (2)
The step of coal is heat-treated.The intensity of moulded coal can be further increased by the heat treatment process, this heat treatment can be
Implement 1~5 hour at a temperature of 50~200 DEG C.
When the temperature and time of the heat treatment includes within the above range, the compressive strength that can enhance moulded coal is improved
Effect, and crackle generation and volatile matter damage can be reduced, thus it is preferred that.
The present invention is described in more detail in the following, enumerating embodiment, but the present invention is not limited to this embodiments.
Embodiment 1
(manufacture of moulded coal composition)
Rudimentary coal (the India Buddhist nun that the moisture content for mixing 100 parts by weight is 15% and calorific value is 4,120kcal/kg
West Asia produce lignite, particle size: 0.1~4mm) and 1.0 parts by weight the cellulose ether as adhesive, will it is obtained mix
It closes object and manually stirs (hand mixing) one minute.At this point, the hydroxyethylmethylcellulose for the use of viscosity being 10,000cps
(hydroxyethyl methyl cellulose；HEMC) it is used as the cellulose ether.Wherein, the viscosity of the cellulose ether
To fly (Brookfield, LV) viscosimeter at 20 DEG C and 20rpm using rich strangle on the basis of the aqueous solution of 2.0 weight % concentration
Under the conditions of the value that measures.
Then, it after adding the distilled water of 20 parts by weight into the mixture Jing Guo the artificial mixed process, utilizes
Hobart (Hobart) blender (Heungjin Machinery, HJ-1150) stirs three minutes to manufacture moulded coal composition.
(manufacture of moulded coal)
Being fabricated to the moulded coal composition using cuber (Jeil industrial group, JCB250T) has wide 51mm × length
The moulded coal of the oval form of 38.2mm × thickness 24mm.
Embodiment 2 to 7 and comparative example 1 to 5
Moisture content and calorific value, adhesive in addition to adjusting the rudimentary coal as documented by following table 1
Other than type and content, moulded coal is manufactured in method same as the previously described embodiments.
[table 1]
* rudimentary coal: Indonesia produces lignite, particle size: 0.1~4mm
*HEMC1): carefree precision chemical Co., Ltd.,CF-1, viscosity: 10,000cps
*HEMC2): carefree precision chemical Co., Ltd.,EMA-70U, viscosity: 60,000cps
* HPMC: carefree precision chemical Co., Ltd.,PMC-60U, viscosity: 10,000cps
* syrup: KC industrial environment Co., Ltd. (solid powder: 77.2%, total amount: 49.3%)
* PVA: Kuraray, M17A
* starch: suitable Ruian, AA α starch
<evaluation method>
1, hydrophobicity is evaluated
Implement following sensory evaluation: filling up the water of 100g in beaker, and impregnate in the beaker one hour by
After moulded coal prepared by embodiment 1 to 7 and comparative example 1 to 5, the degree of the form avalanche for the moulded coal that detects by an unaided eye, by its result
It is shown in following table 2.In following table 2,1. indicates the state that the shape of moulded coal absolutely not changes, 2. indicate the surface of moulded coal slightly
3. the state of micro- floating indicates the state that moulded coal entire surface is floated, 4. indicates the state of the shape avalanche of moulded coal, 5. expression type
The state of the complete avalanche of coal.At this point, can be evaluated for the smaller then hydrophobicity of profile variation of the moulded coal it is higher.
Also, Fig. 1 and Fig. 2, which are respectively indicated, is filling up water by the moulded coal that embodiment 1 to 3 and comparative example 1 to 4 manufacture respectively
Photo after being impregnated one hour in beaker.
Then, the moisture adsorption rate again for calculating the moulded coal by embodiment 1 to 7 and the manufacture of comparative example 1 to 5 according to the following formula, will
The results are shown in following table 2.
Moisture adsorption rate (%)=A again2-A1
In above formula, A1(%) indicates the moisture content (%) of the moulded coal after just manufacture, A2(%) expression impregnates 24 in water
The moisture content (%) of moulded coal taken out after hour, the moisture content be using infrared moisture meter (KETT company,
FD-720) the value measured in the state of 20 minutes, 150 DEG C.
2, compressive strength (kg/cm2)
Utilize universal testing machine (SHINGANG PRECISION IND CO., LTD.AD- universal testing machine-
KN) come measure by embodiment 1 to 7 and comparative example 1 to 5 manufacture moulded coal per unit area highest failing load, made
It evaluates, the results are shown in following table 2 for compressive strength.The compressive strength is to be laminated in moulded coal such as storage tank and fusing
The benchmark of damaged ratio due to itself load is judged inside the container with specific modality of furnace or during transfer.
3, calorific value (kcal/kg)
Entrust chemical industry measurement research institute, South Korea (KTR, the Korea Testing&Research as external authentication organ
Institute it) evaluates the calorific value of moulded coal, the results are shown in following table 2.At this point, the evaluation of the calorific value is with rigid
The moulded coal of taking-up is object after carrying out above-mentioned " 1, hydrophobicity evaluation ", after impregnate in the beaker for filling up water one hour
Implement.
[table 2]
By above-mentioned table 1 it is found that in the case where the moulded coal manufactured by the embodiment of the present invention 1 to 7, and by comparative example 1 to 5
The moulded coal of manufacture is able to confirm that compressive strength and fever compared to showing moisture adsorption rate is lower again and hydrophobicity is excellent
Amount also significantly improves.
In addition, by showing the photo after impregnating one hour moulded coal by the preparation of embodiment 1 to 3 in the beaker for filling up water
Fig. 1 can be further clarified and be confirmed the shape of moulded coal and absolutely not deform.On the contrary, being soaked in the beaker for filling up water by showing
Photo after the stain one hour moulded coal by the manufacture of comparative example 1 to 4, the form of the shape avalanche or moulded coal that are able to confirm that moulded coal are complete
Full avalanche and disappear.
More than, disclosed embodiment of this invention is not used to limit technical idea of the invention, but for illustrating
Technical idea of the invention, interest field of the invention should be explained by appended claims, be should be interpreted that and wanted with the right
Existing all technical ideas are included in interest field of the invention in the range for asking book equivalent.
Claims (10)
1. a kind of moulded coal composition includes coal and cellulose ether, the moisture content of the coal is 5~70% and calorific value is
1,000~5,000kcal/kg.
2. moulded coal composition according to claim 1, which is characterized in that
Calorific value by the moulded coal of moulded coal composition manufacture is 1.2~9 times of the coal, by the moulded coal composition system
The moisture of the moulded coal made calculated according to the following formula again adsorption rate be greater than 0% and 5% hereinafter,
Moisture adsorption rate (%)=A again2-A1
In above formula, A1(%) indicates the moisture content (%) of the moulded coal after just manufacture, A2(%) indicates to impregnate 24 hours in water
The moisture content (%) of the moulded coal taken out afterwards, the moisture content are to utilize infrared moisture meter (KETT company, FD-
720) value measured in the state of 20 minutes, 150 DEG C.
3. moulded coal composition according to claim 1, which is characterized in that
The coal is that partial size is greater than 0mm and 4mm micro mist charcoal below.
4. moulded coal composition according to claim 1, which is characterized in that
On the basis of the aqueous solution of 2.0 weight % concentration, using it is rich strangle fly (Brookfield, LV) viscosimeter at 20 DEG C and
When being measured under conditions of 20rpm, the viscosity (Brookfield Viscometer) of the cellulose ether is 100~100,
000cps。
5. moulded coal composition according to claim 1, which is characterized in that
The cellulose ether includes selected from by alkylcellulose (alkyl cellulose), hydroxy alkyl cellulose
(hydroxyalkyl cellulose), hydroxyalkylalkylcellulose (hydroxyalkyl alkyl cellulose) and alkyl
One or more of the group that alkyl-hydroxyalkylcelluloswith (alkyl alkyl hydroxylalkyl cellulose) is constituted.
6. moulded coal composition according to claim 1, which is characterized in that
The cellulose ether includes selected from by methylcellulose (methyl cellulose；MC), hydroxyethyl cellulose
(hydroxyethyl cellulose；HEC), hydroxypropyl cellulose (hydroxypropyl cellulose；HPC), ethoxy
Methylcellulose (hydroxyethyl methyl cellulose；HEMC), hydroxypropyl methyl cellulose (hydroxypropyl
methyl cellulose；HPMC), ethylhydroxyethylcellulose (ethyl hydroxyethyl cellulose；EHEC) and
Methyl ethyl hydroxyethyl cellulose (methylethyl hydroxyethyl cellulose；MEHEC) one in the group constituted
Kind or more.
7. moulded coal composition according to claim 1, which is characterized in that
On the basis of the coal of 100 parts by weight, the content of the cellulose ether is 0.1~10.0 parts by weight.
8. moulded coal composition according to claim 1, which is characterized in that
The moulded coal composition further includes water.
9. a kind of moulded coal includes moulded coal composition described in any one of claim 1 to 8.
10. moulded coal according to claim 9, which is characterized in that
The moisture content of the moulded coal is 0~20%, calorific value 6,000~9,000kcal/kg.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170055501A KR20180121151A (en) | 2017-04-28 | 2017-04-28 | Composition of coal briquette and coal briquette comprising the same |
| KR10-2017-0055501 | 2017-04-28 | ||
| PCT/KR2018/001802 WO2018199447A1 (en) | 2017-04-28 | 2018-02-12 | Briquette composition and briquette comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110536955A true CN110536955A (en) | 2019-12-03 |
Family
ID=63918345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880025869.8A Pending CN110536955A (en) | 2017-04-28 | 2018-02-12 | Moulded coal composition and moulded coal comprising it |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20180121151A (en) |
| CN (1) | CN110536955A (en) |
| WO (1) | WO2018199447A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114456866A (en) * | 2022-01-17 | 2022-05-10 | 重庆四季金标科技有限公司 | Lignite modification dehydration method and production process thereof and application of modified dehydrated lignite |
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| KR102243573B1 (en) * | 2019-08-16 | 2021-04-23 | 주식회사 이에스알 | Coal briquet composition using a soluble binder and method for producing the same |
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| CN102504904A (en) * | 2011-12-02 | 2012-06-20 | 西安瑞金源能源科技有限责任公司 | Method for producing coal briquettes |
| WO2016140428A1 (en) * | 2015-03-04 | 2016-09-09 | 주식회사 포스코 | Coal briquette, method for manufacturing same, device for manufacturing same, ingot iron manufacturing method, and ingot iron manufacturing device |
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| JP4926671B2 (en) * | 2006-11-30 | 2012-05-09 | 新日本製鐵株式会社 | Coal oven coal pretreatment method and apparatus |
| KR101418053B1 (en) * | 2012-12-21 | 2014-07-09 | 주식회사 포스코 | Coal briquettes and method for manufacturing the same |
| KR102469996B1 (en) * | 2014-07-17 | 2022-11-24 | 롯데정밀화학 주식회사 | Binder for coal briquette |
| KR102280253B1 (en) * | 2014-07-17 | 2021-07-21 | 롯데정밀화학 주식회사 | Composition for forming mill scale briquette and mill scale briquette |
| KR101739859B1 (en) * | 2015-03-04 | 2017-05-25 | 주식회사 포스코 | Coal briquettes, method for manufacturing the same and method for manufacturing molten iron |
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2017
- 2017-04-28 KR KR1020170055501A patent/KR20180121151A/en not_active Application Discontinuation
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- 2018-02-12 CN CN201880025869.8A patent/CN110536955A/en active Pending
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| CN102504904A (en) * | 2011-12-02 | 2012-06-20 | 西安瑞金源能源科技有限责任公司 | Method for producing coal briquettes |
| WO2016140428A1 (en) * | 2015-03-04 | 2016-09-09 | 주식회사 포스코 | Coal briquette, method for manufacturing same, device for manufacturing same, ingot iron manufacturing method, and ingot iron manufacturing device |
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| CN114456866A (en) * | 2022-01-17 | 2022-05-10 | 重庆四季金标科技有限公司 | Lignite modification dehydration method and production process thereof and application of modified dehydrated lignite |
| WO2023134612A1 (en) * | 2022-01-17 | 2023-07-20 | 重庆四季金标科技有限公司 | Lignite modification and dehydration method, production process thereof, and application of modified dehydrated lignite |
Also Published As
| Publication number | Publication date |
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| WO2018199447A1 (en) | 2018-11-01 |
| KR20180121151A (en) | 2018-11-07 |
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