CN110317651A - The method for producing clean formed coke based on alumina transition state binder - Google Patents
The method for producing clean formed coke based on alumina transition state binder Download PDFInfo
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- CN110317651A CN110317651A CN201910460314.2A CN201910460314A CN110317651A CN 110317651 A CN110317651 A CN 110317651A CN 201910460314 A CN201910460314 A CN 201910460314A CN 110317651 A CN110317651 A CN 110317651A
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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
- C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
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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
- C10L5/12—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with inorganic binders
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Abstract
A method of clean formed coke is produced based on alumina transition state binder, the method is to choose silica, lime stone and coal liquefaction residue, it is crushed respectively, add aluminium oxide, metakaolin and pre-gelatinized starch, it is agitated to be uniformly mixed, then through dry grinding, alumina transition state binder is obtained；Mixed coal is chosen, and is uniformly mixed in the ratio of mixed coal and alumina transition state binder, cold moudling is down to room temperature through quenching process after then red heat furnace charge is come out of the stove through destructive distillation in vertical type gas retort, obtains clean formed coke；Raw material sources of the present invention enrich extensively, it is cheap, it has both the effect of cold and hot binder, and cold conditions adhesive failure, hot binder play bonding effect in pyrolytic process before having an effect, and ensure that ratio of briquetting and formed coke intensity of the material in gas retort.
Description
Technical field
The present invention relates to a kind of production methods of clean formed coke, further relate to a kind of used bonding of clean formed coke of production
Agent, especially a kind of alumina transition state binder and its preparation method and application for producing clean formed coke.
Background technique
The special non-renewable energy natural endowment of some few gas rich in coal and poor in oil, determines that coal burning is current or even considerably long from now on
Time obtains the major way of the energy, but largely dust, sulfur dioxide, nitrogen oxides of direct burning and exhausting of coal etc. pair
Atmospheric environment causes serious harm, causes air environmental pollution serious, haze weather takes place frequently；Such as the Chinese statistics people in 2014
It is 1.6 hundred million tons with scattered burning coal consumption, only accounts for the 3.8% of national coal consumption, by taking sulfur dioxide (SO2) emissions as an example, power plant's annual emissions are
2000000 tons, it is 1.6 times of power plant emission total amount that civilian scattered burning, which is then up to 3,200,000 tons,；Furthermore the civilian scattered flue dust dirt burnt with coal
A series of problems, such as dye, nitrogen oxides pollution, cinder pollution, is even more inestimable to the destruction of ecological environment, however, by region,
The influence of the factors such as economy, culture, solve get up it is very difficult, to fundamentally solve the pollution that caused by coal burning in rural area and samll cities and towns
Problem provides high-quality, low price for these areas, clean alternative fuel is the task of top priority.
And use thermal coal mainly based on low-order coal as fuel, with the improvement of mechanization of coal mining, opening
The ratio of smalls is increasing during adopting, and smalls is how to efficiently use by higher and higher attention.
Clean formed coke is one kind based on low order smalls, and be aided with a small amount of sulphur-fixing agent, combustion adjuvant, binder etc., it utilizes
Existing semi-coke factory production equipment has ratio of briquetting high, strong by cleaning solid fuel obtained by medium temperature carbonization after preforming
It spends, low volatilization, low emission sulphur and the advantages that be not easy slagging, is not necessarily to desulfurization equipment, tail gas can meet national emission standard；And
And easily igniting, continuous fiery ability is strong, heating rate is fast, firing duration is long, be the various ideal fuel of domestic life stove.
Coal powder formation method for destructive distillation patent is less at present, makees as used coal liquefaction residue in Publication No. CN106635217A
For its cold and hot binder directly with destructive distillation after fine coal mixed-forming；Pitch, tar are used in Publication No. CN106701133A
Destructive distillation obtains formed coke after slag is mixed as adhesive with fine coal；It is used based on tar slag in Publication No. CN106753496A
Adhesive is aided with destructive distillation after maize flour, inorganic magnesium salt mixed-forming again；Waste heavy is used in Publication No. CN106929063A
Adhesive, and and powder is made in addition dolomite dust after coal tar asphalt, tar slag, polyaluminum ferric chloride are mixed and heated softening
It is first cold-pressed into moulded coal after coal mixing, then destructive distillation obtains formed coke, it is main that these prepare the binder used in the patent formulation of formed coke
Be in 200 DEG C or less cold forming process cold conditions binder have an effect and 400 DEG C or more retort processes in hot binder
It has an effect, but there are cold conditions adhesive failure between 200-400 DEG C in practical retort process, hot binder is not made
Stage, the use of the transition state binder due to lacking the temperature range cause formed coke percentage of damage in retort process high
Problem.
Through retrieving, the alumina transition state binder for producing clean formed coke is had not been reported.
Summary of the invention
The invention solves concrete technical problems be for clean formed coke production adhesive exist in retort process
Cold conditions adhesive failure between 200-400 DEG C, the stage that hot binder is not had an effect, due to lacking the mistake of the temperature range
The use for crossing state binder leads to formed coke percentage of damage height in retort process, and in order to solve this problem, the present invention provides a kind of base
In the method that alumina transition state binder produces clean formed coke.
To achieve the goals above, the invention adopts the following technical scheme.
A method of clean formed coke being produced based on alumina transition state binder, it is characterised in that: the production is clean
The method of formed coke follows these steps to carry out:
(1) the raw material composition and its quality index for choosing alumina transition state binder are aluminium oxide Al2O3It is >=98.4wt%, higher
Ridge soil: activity >=1000mg lime/g, silica SiO2>=96wt%, pre-gelatinized starch: viscosity >=600mPa.s, lime stone CaO >=
51wt% and coal liquefaction residue: Residual oil+asphaltene >=60wt%；
(2), by the material silex, lime stone and coal liquefaction residue of alumina transition state binder, granularity≤3mm is crushed to respectively；
Aluminium oxide, metakaolin and pre-gelatinized starch are spare；
(3) 10-20 parts of 5-20 parts of silica, lime stone being crushed and 50-60 parts of coal liquefaction residue are weighed by weight respectively, separately
20-30 parts of aluminium oxide, 5-10 parts of metakaolin and 10-20 parts of pre-gelatinized starch are weighed, is successively mixed, it is agitated mixed
It closes uniform；
(4) mixture makes raw material granularity≤100 mesh, as alumina transition state binder again through dry grinding；
(5) the quality index of mixed coal is chosen are as follows: dry ash free basis volatile matter Vdaf>=25%, dry basis ash content Ad≤ 15%, butt is solid
Determine carbon FCd>=55%, the full sulphur S of buttt,d< 1.5%；
(6) alumina transition state binder and mixed coal weight ratio are 10-30: 100, and mixed coal is crushed to after -3mm and oxidation
Aluminium transition state binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 10-15MPa, and moulded coal is strong under the briquetting pressure
Degree meets > 800N/ball, by moulded coal obtained 600-900 DEG C at a temperature of, then through destructive distillation in vertical type gas retort, destructive distillation
Duration 2-4h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove to get clean formed coke is arrived.
The wherein primary intensity index of the lustration type coke: compression strength 800N/ball-2000N/ball, ratio of briquetting >
80%, last rate < 10%.
In the above-mentioned technical solutions, aluminium oxide and coal directly-liquefied residue, lime stone and starch complex are used for by the present invention
Clean formed coke is produced, function, which is mainly manifested in, has both cold conditions, hot and transition state binder triple functions, traditional formed coke
Binder only considered cold and hot binder, not in view of in smalls 200-400 DEG C of formed coke retort process of temperature after molding
It will appear cold conditions starch adhesive failure in section, the transit time that hot binder does not work is type in the time phase
It is burnt that the broken stage most easily occurs；The innovation of the invention consists in that provide it is a kind of for alumina transition state binder, can
It has an effect in 200-400 DEG C of temperature range, forms the combination of firm chemical bond between binder and fine coal, to avoid
As bearing cleaning formed coke caused by pressure and itself expansion or compression process in the temperature stage formed coke forming process
It is broken.
A kind of method that clean formed coke is produced based on alumina transition state binder provided by the present invention is above-mentioned, and it is existing
Technology is compared, and advantage and good effect are that used alumina transition state binder, raw material sources are wide in the method
It is general and abundant, cheap, the effect of having both cold and hot binder, and the cold conditions adhesive failure, hot in pyrolytic process
Binder plays bonding effect before having an effect, and ensure that ratio of briquetting and formed coke intensity of the material in gas retort.
The present invention realizes the efficient utilization of low order smalls, improves the utility value of smalls.
Specific embodiment
A specific embodiment of the invention is made below and being further explained.
Embodiment 1
Implement a kind of above-mentioned provided technology for the method that clean formed coke is produced based on alumina transition state binder of the present invention
Scheme, specific method are implemented as follows:
(1) the raw material composition and its quality index for choosing alumina transition state binder are aluminium oxide Al2O398.4wt%, higher ridge
Soil: active 1000mg lime/g, silica SiO296wt%, pre-gelatinized starch: viscosity 1000mPa.s, lime stone CaO56wt% and
Coal liquefaction residue: Residual oil+asphaltene 80wt%；
(2), by the material silex, lime stone and coal liquefaction residue of alumina transition state binder, granularity≤3mm is crushed to respectively；
Aluminium oxide, metakaolin and pre-gelatinized starch are spare；
(3) weigh the silica 20kg, lime stone 20kg and coal liquefaction residue 50kg being crushed by weight respectively, separately weigh oxidation
Aluminium 20kg, metakaolin 10kg and pre-gelatinized starch 10kg, are successively mixed, agitated to be uniformly mixed；
(4) mixture makes raw material granularity≤100 mesh, as alumina transition state binder again through dry grinding；
(5) entering furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf30.0wt%, dry basis ash content
Ad13.5wt%, butt fixed carbon FCd59.1wt%, the full sulphur S of buttt,d1.46wt%；
(6) alumina transition state binder and mixed coal weight ratio are 10: 100, and mixed coal is crushed to after -3mm and aluminium oxide mistake
It crosses state binder to be uniformly mixed, first through cold moudling, briquetting pressure selects 15MPa, by moulded coal obtained, in 900 DEG C of temperature
Under, then through destructive distillation in vertical type gas retort, destructive distillation duration 2h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove,
Obtain lustration type coke.
Comparative example 1
As-fired coal material uses same mixed coal, does not add alumina transition state binder, by mixed coal be crushed to after -3mm with
Binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 15MPa, by moulded coal obtained, 900 DEG C at a temperature of, then
Through destructive distillation in vertical type gas retort, destructive distillation duration 2h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove to get arriving
Control coke.
Respectively to institute in the prosperous YAW-300D type strength tester in Jinan Road and Xinxiang occasion prestige YBS-1000 type pulp classifier
Compression strength, ratio of briquetting and the last rate index for obtaining clean formed coke and control coke are measured, and test result is as follows shown in table 1.
1 compression strength of table, ratio of briquetting and last rate index comparison
Embodiment 2
Implement a kind of above-mentioned provided technology for the method that clean formed coke is produced based on alumina transition state binder of the present invention
Scheme, specific method are implemented as follows:
(1) the raw material composition and its quality index for choosing alumina transition state binder are aluminium oxide Al2O398.5wt%, higher ridge
Soil: active 1100mg lime/g, silica SiO296.6wt%, pre-gelatinized starch: viscosity 900mPa.s, lime stone CaO54wt% with
And coal liquefaction residue: Residual oil+asphaltene 75wt%；
(2), by the material silex, lime stone and coal liquefaction residue of alumina transition state binder, granularity≤3mm is crushed to respectively；
Aluminium oxide, metakaolin and pre-gelatinized starch are spare；
(3) weigh the silica 16kg, lime stone 17.5kg and coal liquefaction residue 52.5kg being crushed by weight respectively, separately weigh
Aluminium oxide 22.5kg, metakaolin 9kg and pre-gelatinized starch 12.5kg, are successively mixed, agitated to be uniformly mixed；
(4) mixture makes raw material granularity≤100 mesh, as alumina transition state binder again through dry grinding；
(5) entering furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf29.0wt%, dry basis ash content
Ad12.4wt%, butt fixed carbon FCd61.2wt%, the full sulphur S of buttt,d0.97wt%；
(6) alumina transition state binder and mixed coal weight ratio are 15: 100, and mixed coal is crushed to after -3mm and aluminium oxide mistake
It crosses state binder to be uniformly mixed, first through cold moudling, briquetting pressure selects 14MPa, by moulded coal obtained, in 850 DEG C of temperature
Under, then through destructive distillation in vertical type gas retort, destructive distillation duration 2.5h is down to often after then red heat furnace charge is come out of the stove through quenching process
Temperature is to get to clean formed coke.
Comparative example 2
As-fired coal material uses same mixed coal, does not add alumina transition state binder, by mixed coal be crushed to after -3mm with
Binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 14MPa, by moulded coal obtained, 850 DEG C at a temperature of, then
Through destructive distillation in vertical type gas retort, destructive distillation duration 2.5h, after then red heat furnace charge is come out of the stove through quenching process be down to room temperature to get
To control coke.
In the prosperous YAW-300D type strength tester in Jinan Road and Xinxiang occasion prestige YBS-1000 type pulp classifier
The compression strength burnt to gained cleaning formed coke and control, ratio of briquetting and last rate index are measured respectively, test result
As shown in table 2 below.
2 compression strength of table, ratio of briquetting and last rate index comparison
| Sample | Compression strength (N/ball) | Ratio of briquetting/% | Last rate/% |
| Control coke | 806 | 74.8 | 16.1 |
| Add the clean formed coke of transition state binder | 1020 | 85.2 | 8.6 |
Embodiment 3
Implement a kind of above-mentioned provided technology for the method that clean formed coke is produced based on alumina transition state binder of the present invention
Scheme, specific method are implemented as follows:
(1) the raw material composition and its quality index for choosing alumina transition state binder are aluminium oxide Al2O398.6wt%, higher ridge
Soil: active 1200mg lime/g, silica SiO297.2wt%, pre-gelatinized starch: viscosity 800mPa.s, lime stone CaO53wt% with
And coal liquefaction residue: Residual oil+asphaltene 70wt%；
(2), by the material silex, lime stone and coal liquefaction residue of alumina transition state binder, granularity≤3mm is crushed to respectively；
Aluminium oxide, metakaolin and pre-gelatinized starch are spare；
(3) weigh the silica 12kg, lime stone 15kg and coal liquefaction residue 55kg being crushed by weight respectively, separately weigh oxidation
Aluminium 25kg, metakaolin 8kg and pre-gelatinized starch 15kg, are successively mixed, agitated to be uniformly mixed；
(4) mixture makes raw material granularity≤100 mesh, as alumina transition state binder again through dry grinding；
(5) entering furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf32.0wt%, dry basis ash content
Ad11.7wt%, butt fixed carbon FCd59.2wt%, the full sulphur S of buttt,d0.84wt%；
(6) alumina transition state binder and mixed coal weight ratio are 20: 100, and mixed coal is crushed to -3mm and alumina transition
State binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 13MPa, by moulded coal obtained, 800 DEG C at a temperature of,
Again through destructive distillation in vertical type gas retort, destructive distillation duration 3h, after then red heat furnace charge is come out of the stove through quenching process be down to room temperature to get
To clean formed coke.
Comparative example 3
As-fired coal material uses same mixed coal, does not add alumina transition state binder, by mixed coal be crushed to after -3mm with
Binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 13MPa, by moulded coal obtained, 800 DEG C at a temperature of, then
Through destructive distillation in vertical type gas retort, destructive distillation duration 3h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove to get arriving
Control coke.
Respectively to institute in the prosperous YAW-300D type strength tester in Jinan Road and Xinxiang occasion prestige YBS-1000 type pulp classifier
Compression strength, ratio of briquetting and the last rate index for obtaining clean formed coke and control coke are measured, and test result is as follows shown in table 3.
3 compression strength of table, ratio of briquetting and last rate index
| Sample | Compression strength (N/ball) | Ratio of briquetting/% | Last rate/% |
| Control coke | 860 | 75.2 | 15.6 |
| Add the clean formed coke of transition state binder | 1280 | 88.2 | 7.9 |
Embodiment 4
Implement a kind of above-mentioned provided technology for the method that clean formed coke is produced based on alumina transition state binder of the present invention
Scheme, specific method are implemented as follows:
(1) the raw material composition and its quality index for choosing alumina transition state binder are aluminium oxide Al2O398.7wt%, higher ridge
Soil: active 1300mg lime/g, silica SiO297.8wt%, pre-gelatinized starch: viscosity 700mPa.s, lime stone CaO52wt% with
And coal liquefaction residue: Residual oil+asphaltene 65wt%；
(2), by the material silex, lime stone and coal liquefaction residue of alumina transition state binder, granularity≤3mm is crushed to respectively；
Aluminium oxide, metakaolin and pre-gelatinized starch are spare；
(3) weigh the silica 8kg, lime stone 12.5kg and coal liquefaction residue 57.5kg being crushed by weight respectively, separately weigh oxygen
Change aluminium 27.5kg, metakaolin 7kg and pre-gelatinized starch 17.5kg, is successively mixed, it is agitated to be uniformly mixed；
(4) mixture makes raw material granularity≤100 mesh, as alumina transition state binder again through dry grinding；
(5) entering furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf25.0wt%, dry basis ash content
Ad14.1wt%, butt fixed carbon FCd63.2wt%, the full sulphur S of buttt,d1.23wt%；
(6) alumina transition state binder and mixed coal weight ratio are 25: 100, and mixed coal is crushed to -3mm and alumina transition
State binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 12MPa, by moulded coal obtained, 700 DEG C at a temperature of,
Again through destructive distillation in vertical type gas retort, destructive distillation duration 3.5h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove, i.e.,
Obtain clean formed coke.
Comparative example 4
As-fired coal material uses same mixed coal, does not add alumina transition state binder, by mixed coal be crushed to after -3mm with
Binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 12MPa, by moulded coal obtained, 700 DEG C at a temperature of, then
Through destructive distillation in vertical type gas retort, destructive distillation duration 3.5h, after then red heat furnace charge is come out of the stove through quenching process be down to room temperature to get
To control coke.
Respectively to institute in the prosperous YAW-300D type strength tester in Jinan Road and Xinxiang occasion prestige YBS-1000 type pulp classifier
Compression strength, ratio of briquetting and the last rate index for obtaining clean formed coke and control coke are measured, and test result is as follows shown in table 4.
4 compression strength of table, ratio of briquetting and last rate index comparison
Embodiment 5
Implement a kind of above-mentioned provided technology for the method that clean formed coke is produced based on alumina transition state binder of the present invention
Scheme, specific method are implemented as follows:
(1) the raw material composition and its quality index for choosing alumina transition state binder are aluminium oxide Al2O398.8wt%, higher ridge
Soil: active 1400mg lime/g, silica SiO298.5wt%, pre-gelatinized starch: viscosity 600mPa.s, lime stone CaO51wt% with
And coal liquefaction residue: Residual oil+asphaltene 60wt%；
(2), by the material silex, lime stone and coal liquefaction residue of alumina transition state binder, granularity≤3mm is crushed to respectively；
Aluminium oxide, metakaolin and pre-gelatinized starch are spare；
(3) weigh the silica 5kg, lime stone 10kg and coal liquefaction residue 60kg being crushed by weight respectively, separately weigh aluminium oxide
30kg, metakaolin 5kg and pre-gelatinized starch 20kg, are successively mixed, agitated to be uniformly mixed；
(4) mixture makes raw material granularity≤100 mesh, as alumina transition state binder again through dry grinding；
(5) entering furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf34.0wt%, dry basis ash content
Ad15.0wt%, butt fixed carbon FCd55.4wt%, the full sulphur S of buttt,d0.70wt%；
(6) alumina transition state binder and mixed coal weight ratio are 30: 100, and mixed coal is crushed to -3mm and alumina transition
State binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 10MPa, by moulded coal obtained, 600 DEG C at a temperature of,
Again through destructive distillation in vertical type gas retort, destructive distillation duration 4h, after then red heat furnace charge is come out of the stove through quenching process be down to room temperature to get
To clean formed coke.
Comparative example 5
As-fired coal material uses same mixed coal, does not add alumina transition state binder, by mixed coal be crushed to after -3mm with
Binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 10MPa, by moulded coal obtained, 600 DEG C at a temperature of, then
Through destructive distillation in vertical type gas retort, destructive distillation duration 4h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove to get arriving
Control coke.
Respectively to institute in the prosperous YAW-300D type strength tester in Jinan Road and Xinxiang occasion prestige YBS-1000 type pulp classifier
Compression strength, ratio of briquetting and the last rate index for obtaining clean formed coke and control coke are measured, and test result is as follows shown in table 5.
5 compression strength of table, ratio of briquetting and last rate index comparison
| Sample | Compression strength (N/ball) | Ratio of briquetting/% | Last rate/% |
| Control coke | 817 | 74.9 | 15.8 |
| Add the clean formed coke of transition state binder | 1100 | 83.6 | 8.8 |
Claims (2)
1. a kind of method for producing clean formed coke based on alumina transition state binder, it is characterised in that: the production lustration type
Burnt method follows these steps to carry out:
(1) the raw material composition and its quality index for choosing alumina transition state binder are aluminium oxide Al2O3It is >=98.4wt%, higher
Ridge soil: activity >=1000mg lime/g, silica SiO2>=96wt%, pre-gelatinized starch: viscosity >=600mPa.s, lime stone CaO >=
51wt% and coal liquefaction residue: Residual oil+asphaltene >=60wt%；
(2), by the material silex, lime stone and coal liquefaction residue of alumina transition state binder, granularity≤3mm is crushed to respectively；
Aluminium oxide, metakaolin and pre-gelatinized starch are spare；
(3) 10-20 parts of 5-20 parts of silica, lime stone being crushed and 50-60 parts of coal liquefaction residue are weighed by weight respectively, separately
20-30 parts of aluminium oxide, 5-10 parts of metakaolin and 10-20 parts of pre-gelatinized starch are weighed, is successively mixed, it is agitated mixed
It closes uniform；
(4) mixture makes raw material granularity≤100 mesh, as alumina transition state binder again through dry grinding；
(5) the quality index of mixed coal is chosen are as follows: dry ash free basis volatile matter Vdaf>=25%, dry basis ash content Ad≤ 15%, butt is fixed
Carbon FCd>=55%, the full sulphur S of buttt,d< 1.5%；
(6) alumina transition state binder and mixed coal weight ratio are 10-30: 100, and mixed coal is crushed to after -3mm and oxidation
Aluminium transition state binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 10-15MPa, and moulded coal is strong under the briquetting pressure
Degree meets > 800N/ball, by moulded coal obtained 600-900 DEG C at a temperature of, then through destructive distillation in vertical type gas retort, destructive distillation
Duration 2-4h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove to get clean formed coke is arrived.
2. the method for producing clean formed coke based on alumina transition state binder as described in claim 1, it is characterised in that: institute
State the primary intensity index of clean formed coke: compression strength 800N/ball-2000N/ball, ratio of briquetting > 80%, last rate < 10%.
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| CN111909746A (en) * | 2020-07-08 | 2020-11-10 | 胡军 | Preparation and application method of water-soluble adhesive powder for cold-pressed coke |
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|---|---|---|---|---|
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