CN104411838A - Blast-furnace-blow-in charcoal and method for producing same - Google Patents
Blast-furnace-blow-in charcoal and method for producing same Download PDFInfo
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- CN104411838A CN104411838A CN201380035147.8A CN201380035147A CN104411838A CN 104411838 A CN104411838 A CN 104411838A CN 201380035147 A CN201380035147 A CN 201380035147A CN 104411838 A CN104411838 A CN 104411838A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/007—Conditions of the cokes or characterised by the cokes used
-
- 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
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- 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
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
-
- 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
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
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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
- C10B57/14—Features of low-temperature carbonising processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
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- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Iron (AREA)
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Abstract
In this blast-furnace-blow-in charcoal that is blown in from a tuyere to the interior of a blast furnace main body of a blast furnace facility, the oxygen atom content (on a dry basis) is 10-20 wt% and the average pore size is 10-50 nm.
Description
Technical field
The present invention relates to pulverized coal injection into blast furna and manufacture method thereof.
Background technology
In blast-furnace equipment, by loading the raw material such as iron ore, Wingdale, coking coal by top to the inside of blast-furnace body, and the tuyere injection hot blast on the lower by sidepiece and the dust coal (PCI coal) as auxiliary fuel, can manufacture the pig iron by iron ore thus.
As such pulverized coal injection into blast furna, propose such as by KMnO
4, H
2o
2, KClO
3, K
2cr
2o
4make an addition in advance in dust coal in oxygenant, improve efficiency of combustion thus and the pulverized coal injection into blast furna of the generation of unburned carbon (coal) (for example, referring to following patent documentation 1) can be suppressed.
In addition, propose and such as in hot blast, make oxygen coalescence and jetted by the inside of air port to blast-furnace body, improve the incendivity (for example, referring to following patent documentation 2) of pulverized coal injection into blast furna thus.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 6-220510 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2003-286511 publication
Summary of the invention
Invent problem to be solved
But, for the pulverized coal injection into blast furna recorded in above-mentioned patent documentation 1, specially oxygenant as described above is made an addition in dust coal, therefore causes the increase of operating cost.
In addition, in the incendivity raising method recorded in above-mentioned patent documentation 2, need limit in hot blast, constantly add a large amount of oxygen limits and blast furnace is operated, therefore still cause the increase of operating cost.
Thus, the object of the invention is to, provide and can improve efficiency of combustion with low cost and suppress pulverized coal injection into blast furna and the manufacture method thereof of the generation of unburned carbon (coal).
For solving the means of problem
For solve above-mentioned problem, the pulverized coal injection into blast furna of the first invention is the pulverized coal injection into blast furna of being jetted to the inside of the blast-furnace body of blast-furnace equipment by air port, it is characterized in that, Sauerstoffatom is 10 ~ 20 % by weight containing proportional (drying schedule), and average fine pore is 10 ~ 50nm.
The feature of the pulverized coal injection into blast furna of the second invention is, in the first invention, pore volume is 0.05 ~ 0.5cm
3/ g.
The feature of the pulverized coal injection into blast furna of the 3rd invention is, in the first or second invention, specific surface area is 1 ~ 100m
2/ g.
In addition, for solve above-mentioned problem, the feature of the manufacture method of the pulverized coal injection into blast furna of the 4th invention is, it is the manufacture method of any one pulverized coal injection into blast furna in the first to the 3rd invention, wherein carries out: heating sub-bituminous coal or brown coal and dewatered drying process; With the destructive distillation operation of described coal dry in described drying process being carried out at 460 ~ 590 DEG C destructive distillation.
The feature of the manufacture method of the pulverized coal injection into blast furna of the 5th invention is, in the 4th invention, carries out the refrigerating work procedure described coal of destructive distillation in described destructive distillation operation being cooled to 50 ~ 150 DEG C; With by the described coal cooled in described refrigerating work procedure is exposed in the oxygen-containing atmosphere of 50 ~ 150 DEG C, thus chemically adsorbing oxygen and make the partial oxidation operation of its partial oxidation.
Invention effect
According to pulverized coal injection into blast furna of the present invention, average fine pore is 10 ~ 50nm, i.e. oxygen-containing functional group (carboxyl, aldehyde radical, ester group, hydroxyl etc.) etc. tar generate base depart from and significantly reduce, and Sauerstoffatom is 10 ~ 20 % by weight containing proportional (drying schedule), namely main framing is (with C, H, combusting component centered by O) decomposition (minimizing) significantly suppressed, therefore, if jetted by the inside of air port to blast-furnace body with hot blast simultaneously, then in main framing, contain a large amount of Sauerstoffatom, and due to the pore that diameter is large, the oxygen of hot blast easily diffuses to inside, moreover, tar ingredients becomes and is very difficult to produce, thus with substantially can not producing unburned carbon (coal) perfect combustion, therefore, it is possible to improve efficiency of combustion with low cost and suppress the generation of unburned carbon (coal).
In addition, according to the manufacture method of pulverized coal injection into blast furna of the present invention, above-mentioned pulverized coal injection into blast furna can be manufactured with low cost.
Accompanying drawing explanation
Fig. 1 is the schema of the first embodiment step of the manufacture method representing pulverized coal injection into blast furna of the present invention.
Fig. 2 is the schema of the second embodiment step of the manufacture method representing pulverized coal injection into blast furna of the present invention.
Fig. 3 is when representing that limit makes sub-bituminous coal intensification limit measure infrared absorption spectrum under nitrogen atmosphere, the chart of the relation of the content ratio of temperature and oxygen-containing functional group.
Fig. 4 be represent make coal of the present invention and moisture-free coal and existing coal combustion after the chart of relation of remaining oxygen concentration (excess oxygen concentration) in combustion exhaust after the ratio of unburned carbon that reclaims and burning.
Fig. 5 is the chart of the relation representing excess oxygen rate when making coal of the present invention and existing coal perfect combustion and temperature of combustion.
Embodiment
Be described based on the embodiment of accompanying drawing to pulverized coal injection into blast furna of the present invention and manufacture method thereof, but the present invention is not limited in based on the following embodiment illustrated by accompanying drawing.
< first embodiment >
First embodiment of pulverized coal injection into blast furna of the present invention and manufacture method thereof is described based on Fig. 1.
The Sauerstoffatom of the pulverized coal injection into blast furna of present embodiment is 10 ~ 18 % by weight containing proportional (drying schedule), and average fine pore is 10 ~ 50nm (nanometer) (preferably 20 ~ 50nm (nanometer)).
The pulverized coal injection into blast furna of such present embodiment as shown in Figure 1, easily can be manufactured by following operation: by sub-bituminous coal, (Sauerstoffatom is containing proportional (drying schedule): be greater than 18 % by weight for the low grade coals such as brown coal, average fine pore: 3 ~ 4nm) 11 in hypoxic atmosphere (oxygen concn: 5 below volume %) carry out heating (110 ~ 200 DEG C × 0.5 ~ 1 hour) and dry (drying process S11), thus after removing moisture, in hypoxic atmosphere, (oxygen concn: 2 below volume %) carries out heating (460 ~ 590 DEG C (preferably 500 ~ 550 DEG C) × 0.5 ~ 1 hour) and destructive distillation (destructive distillation operation S12), thus will water be generated, carbonic acid gas, tar ingredients etc. are as carbonizing gas, after empyreumatic oil removing, in hypoxic atmosphere, (oxygen concn: 2 below volume %) carries out cooling (less than 50 DEG C) (refrigerating work procedure S13), Crushing of Ultrafine (particle diameter: less than 77 μm (80% passes through)) (Crushing of Ultrafine operation S14).
In the pulverized coal injection into blast furna 12 that the manufacture method by such present embodiment manufactures, average fine pore is 10 ~ 50nm, i.e. oxygen-containing functional group (carboxyl, aldehyde radical, ester group, hydroxyl etc.) etc. tar generate base depart from and significantly reduce, and Sauerstoffatom is 10 ~ 18 % by weight containing proportional (drying schedule), namely main framing is (with C, H, combusting component centered by O) decomposition (minimizing) significantly suppressed, therefore, if jetted by the inside of air port to blast-furnace body with hot blast simultaneously, then in main framing, contain a large amount of Sauerstoffatom, and due to the pore that diameter is large, the oxygen of hot blast easily diffuses to inside, moreover, tar ingredients becomes and is very difficult to produce, thus with substantially can not producing unburned carbon (coal) perfect combustion.
Therefore, in the pulverized coal injection into blast furna 12 of present embodiment, even if neither make it contain KMnO
4, H
2o
2, KClO
3, K
2cr
2o
4in oxygenant, in hot blast, do not make oxygen coalescence yet, can improve efficiency of combustion yet and suppress the generation of unburned carbon (coal).
Therefore, according to the present embodiment, efficiency of combustion can be improved with low cost and suppress the generation of unburned carbon (coal).
It should be noted that, in the pulverized coal injection into blast furna 12 of present embodiment, average fine pore is necessary for 10 ~ 50nm (preferably 20 ~ 50nm).This be due to, if average fine pore is lower than 10nm, the easy degree that oxygen then in hot blast internally spreads reduces, cause combustible reduction, on the other hand, if average fine pore is more than 50nm, then easily become fine because thermal shocking etc. occurs broken, time winding-up in inside to blast-furnace body, if occur broken and become fine, then discharged by the inside of blast-furnace body under along with the state of air-flow unburn.
In addition, Sauerstoffatom is also necessary for more than 10 % by weight containing proportional (drying schedule).If this is because, Sauerstoffatom is containing proportional lower than 10 % by weight, then, when not containing oxygenant, not making the oxygen coalescence of hot blast, be difficult to make its perfect combustion.
In addition, preferred pore volume is 0.05 ~ 0.5cm
3/ g, is particularly very preferably 0.1 ~ 0.2cm
3/ g.If this is because, pore volume is lower than 0.05cm
3/ g, then little with the contact area (reaction area) of the oxygen in hot blast, combustible reduction may be caused; On the other hand, if pore volume is more than 0.5cm
3/ g, then because the volatilization of a large amount of composition causes excessive porous and combusting component becomes very few.
In addition, preferred specific surface area is 1 ~ 100m
2/ g, is particularly very preferably 5 ~ 20m
2/ g.If this is because, specific surface area is lower than 1m
2/ g, then little with the contact area (reaction area) of the oxygen in hot blast, likely cause combustible reduction; On the other hand, if specific surface area is more than 100m
2/ g, then because the volatilization of a large amount of composition causes excessive porous and combusting component becomes very few.
On the other hand, in the manufacture method of the pulverized coal injection into blast furna of present embodiment, the pyrolysis temperature of described destructive distillation operation S12 is necessary for 460 ~ 590 DEG C (preferably 500 ~ 550 DEG C).If this is because, pyrolysis temperature is lower than 460 DEG C, then the tar such as oxygen-containing functional group can not be made to generate base and fully to depart from from above-mentioned low grade coal 11, and make average fine pore be that 10 ~ 50nm becomes very difficult; On the other hand, if pyrolysis temperature is more than 590 DEG C, then the decomposition of the main framing (combusting component centered by C, H, O) of above-mentioned low grade coal 11 starts to become remarkable, and the volatilization due to a large amount of composition causes combusting component excessively to reduce.
< second embodiment >
Second embodiment of pulverized coal injection into blast furna of the present invention and manufacture method thereof is described based on Fig. 2.It should be noted that, for the part same with the situation of above-mentioned embodiment, by using the symbol identical with the symbol used in the explanation of above-mentioned embodiment, omitting the repeat specification with the explanation in above-mentioned embodiment.
The Sauerstoffatom of the pulverized coal injection into blast furna of present embodiment is 12 ~ 20 % by weight containing proportional (drying schedule), and average fine pore is 10 ~ 50nm (preferably 20 ~ 50nm).
The pulverized coal injection into blast furna of such present embodiment as shown in Figure 2, easily can be manufactured by following operation: above-mentioned low grade coal (Sauerstoffatom is containing proportional (drying schedule): be greater than 18 % by weight) 11 is carried out drying (drying process S11) in the same manner as above-mentioned embodiment, destructive distillation (destructive distillation operation S12) is carried out in the same manner as above-mentioned embodiment, in hypoxic atmosphere, (oxygen concn: 2 below volume %) carries out cooling (50 ~ 150 DEG C) (refrigerating work procedure S23) afterwards, expose (50 ~ 150 DEG C × 0.5 ~ 10 hour) in oxygen-containing atmosphere (oxygen concn: 5 ~ 21 volume %) to the open air, thus chemically adsorbing oxygen and after making its partial oxidation (partial oxidation operation S25), Crushing of Ultrafine (Crushing of Ultrafine operation S14) is carried out in the same manner as above-mentioned embodiment.
Namely, in the present embodiment, after the described coal of destructive distillation in above-mentioned destructive distillation operation S12 is cooled to 50 ~ 150 DEG C, in described partial oxidation operation S25, this coal partial oxidation is made to this coal chemistry adsorb oxygen, thus obtain the pulverized coal injection into blast furna 22 that Sauerstoffatom containing proportional (drying schedule) is 12 ~ 20 % by weight.
In the pulverized coal injection into blast furna 22 utilizing the manufacture method of such present embodiment to manufacture, in the same manner as the situation of above-mentioned embodiment, average fine pore is 10 ~ 50nm, i.e. oxygen-containing functional group (carboxyl, aldehyde radical, ester group, hydroxyl etc.) etc. tar generate base depart from and significantly reduce, and Sauerstoffatom is 12 ~ 20 % by weight containing proportional (drying schedule), namely main framing is (with C, H, combusting component centered by O) decomposition (minimizing) significantly suppressed, and chemisorption has Sauerstoffatom further, therefore, if jetted by the inside of air port to blast-furnace body with hot blast simultaneously, then compared with the situation of above-mentioned embodiment, main framing is more containing Sauerstoffatom, and in the same manner as the situation of above-mentioned embodiment, the pore large due to diameter and the oxygen of hot blast easily diffuses to inside, moreover, tar ingredients becomes and is very difficult to produce, therefore, compared with the situation of above-mentioned embodiment, with can not producing unburned carbon (coal) further perfect combustion.
Therefore, in the pulverized coal injection into blast furna 22 of present embodiment, even if neither make it contain KMnO
4, H
2o
2, KClO
3, K
2cr
2o
4in oxygenant, in hot blast, do not make oxygen coalescence yet, compared with the situation of above-mentioned embodiment, can improve the generation that efficiency of combustion also suppresses unburned carbon (coal) more effectively further yet.
Therefore, according to the present embodiment, compared with the situation of above-mentioned embodiment, can efficiency of combustion be improved with low cost more effectively and suppress the generation of unburned carbon (coal).
It should be noted that, in the pulverized coal injection into blast furna 22 of present embodiment, Sauerstoffatom is necessary for less than 20 % by weight containing proportional (drying schedule).If this is because, Sauerstoffatom is containing proportional more than 20 % by weight, then the content of oxygen is too much, and thermal value becomes too low.
On the other hand, in the manufacture method of the pulverized coal injection into blast furna of present embodiment, the treatment temp of preferred above-mentioned partial oxidation operation S25 is 50 ~ 150 DEG C.This be due to, if treatment temp is lower than 50 DEG C, even then air (oxygen concn: 21 volume %) atmosphere, also become and be difficult to carry out partial oxidation process, if treatment temp is more than 150 DEG C, even then oxygen concn is the atmosphere of 5 volume about %, also likely produce carbon monoxide, carbonic acid gas in a large number due to combustion reactions.
Embodiment
Action effect in order to confirm pulverized coal injection into blast furna of the present invention and manufacture method thereof is below described and the embodiment implemented, but the present invention is not limited in the following examples be described based on various data.
< No.1: compositional analysis >
Carry out the compositional analysis (ultimate analysis) of the pulverized coal injection into blast furna 12 (coal of the present invention) obtained according to the manufacture method of the first above-mentioned embodiment.In addition, in order to compare, also carried out simultaneously existing pulverized coal injection into blast furna (PCI coal: existing coal), with the first embodiment in omit above-mentioned destructive distillation operation S12 and the compositional analysis of coal (moisture-free coal) that obtains.The results are shown in following table 1.It should be noted that, numerical value is drying schedule meter.
[table 1]
| Coal of the present invention | Existing coal | Moisture-free coal | |
| C(wt.％) | 73.8 | 84.5 | 71.0 |
| H(wt.％) | 3.2 | 3.8 | 3.6 |
| O(wt.％) | 14.4 | 2.9 | 18.5 |
| N(wt.％) | 1.1 | 1.7 | 1.0 |
| S(wt.％) | 0.3 | 0.5 | 0.5 |
| Thermal value (kcal/kg) | 6700 | 8020 | 6300 |
From above-mentioned table 1, in coal of the present invention, the ratio of oxygen (O) lower than moisture-free coal, with existing coal facies than very large, on the other hand, the ratio of carbon (C) is greater than moisture-free coal, is less than existing coal.Therefore, the thermal value of coal of the present invention is greater than moisture-free coal, is less than existing coal.
< No.2: condition of surface >
Determine the condition of surface (average fine pore, pore volume, specific surface area) of above-mentioned coal of the present invention.In addition, in order to compare, go back the condition of surface of the above-mentioned existing coal of Simultaneously test and moisture-free coal.The results are shown in following table 2.
[table 2]
| Coal of the present invention | Existing coal | Moisture-free coal | |
| Average fine pore (nm) | 20 | 1.5 | 3.5 |
| Pore volume (cm 3/g) | 0.13 | 0.08 | 0.14 |
| Specific surface area (m 2/g) | 10.4 | 0.23 | 15 |
From above-mentioned table 2, the average fine pore of coal of the present invention is very large compared with existing coal and moisture-free coal.
< No.3: oxygen-containing functional group amount >
Limit makes sub-bituminous coal (U.S. PRB coal) intensification (10 DEG C/min) limit measure infrared absorption spectrum under nitrogen atmosphere, and that tries to achieve each temperature of oxygen-containing functional group (hydroxyl (OH), carboxyl (COOH), aldehyde radical (COH), ester group (COO)) thus contains proportional.The results are shown in Fig. 3.It should be noted that, transverse axis represents temperature, the ratio of the whole peak area of the oxygen-containing functional group when longitudinal axis represents the peak area of each oxygen-containing functional group relative to 110 DEG C.
As shown in Figure 3, confirm above-mentioned oxygen-containing functional group, i.e. tar generation base and substantially disappear 460 DEG C time, all disappear 500 DEG C time.
< No.4: incendivity >
Try to achieve the relation making the ratio of unburned carbon that above-mentioned coal of the present invention is remaining when the combustion synthesis in air of 1500 DEG C and the supply flow rate of air.In addition, in order to compare, also try to achieve above-mentioned existing coal and the situation of moisture-free coal simultaneously.The results are shown in Fig. 4.It should be noted that, in the diagram, transverse axis represents the remaining oxygen concentration in the combustion exhaust after making described coal combustion, in other words, represents excess oxygen concentration, the longitudinal axis represent make described coal combustion after the ratio of unburned carbon that reclaims.
As shown in Figure 4, for existing coal and moisture-free coal, along with excess oxygen concentration reduces, unburned carbon amount increases gradually.On the other hand, reduce even if confirm coal excess oxygen concentration of the present invention, unburned carbon amount does not also increase, can roughly perfect combustion.
< No.5: temperature of combustion >
Try to achieve the relation of excess oxygen rate when to make above-mentioned coal 100% perfect combustion of the present invention under following condition and temperature of combustion.In addition, in order to compare, also try to achieve the situation of above-mentioned existing coal simultaneously.The results are shown in Fig. 5.It should be noted that, excess oxygen rate Os is the value defined by following formula (1).
* combustion-type
C+O
2→CO
2
H
2+1/2O
2→H
2O
* combustion conditions
Air supply temperature: 1200 DEG C
Air oxygen concentration: 21vol.%
Coal supplying temperature: 25 DEG C
Attached water: 2%
Excess oxygen rate Os=(Oa+Oc/2)/(Cc+Hc/4) (1)
Wherein, Oa is the molar flow of the oxygen (molecule) in air supply, and Oc is for the Sauerstoffatom molar flow in coal supply, and Cc is for the carbon atom molar flow in coal supply, and Hc is for the hydrogen atom molar flow in coal supply.
As shown in Figure 5, the thermal value confirming coal of the present invention is less than existing coal, but when the excess oxygen rate same with existing coal, temperature of combustion is on the contrary higher than existing coal.This is because, coal of the present invention containing aerobic ratio higher than existing coal, if be therefore set to the excess oxygen rate same with existing coal, then can complete with the air supply amount being less than existing coal.
Utilizability in industry
Pulverized coal injection into blast furna of the present invention and manufacture method thereof can utilize extremely valuably in coal industry, iron industry processed etc.
Nomenclature
11 low grade coals (sub-bituminous coal or brown coal)
12,22 pulverized coal injection into blast furna
S11 drying process
S12 destructive distillation operation
S13, S23 refrigerating work procedure
S14 Crushing of Ultrafine operation
S25 partial oxidation operation
Claims (5)
1. a pulverized coal injection into blast furna, is characterized in that, described pulverized coal injection into blast furna is the pulverized coal injection into blast furna of being jetted to the inside of the blast-furnace body of blast-furnace equipment by air port, wherein,
Sauerstoffatom counts 10 ~ 20 % by weight containing proportional with drying schedule,
Average fine pore is 10 ~ 50nm.
2. pulverized coal injection into blast furna as claimed in claim 1, is characterized in that,
Pore volume is 0.05 ~ 0.5cm
3/ g.
3., as pulverized coal injection into blast furna according to claim 1 or claim 2, it is characterized in that,
Specific surface area is 1 ~ 100m
2/ g.
4. a manufacture method for pulverized coal injection into blast furna, is characterized in that, described manufacture method is the manufacture method of the pulverized coal injection into blast furna according to any one of claim 1 to claim 3, wherein carries out following operation:
Drying process, heating sub-bituminous coal or brown coal and remove moisture;
Destructive distillation operation, carries out destructive distillation by described coal dry in described drying process at 460 ~ 590 DEG C.
5. the manufacture method of pulverized coal injection into blast furna as claimed in claim 4, is characterized in that, carry out following operation:
Refrigerating work procedure, is cooled to 50 ~ 150 DEG C by the described coal of destructive distillation in described destructive distillation operation;
Partial oxidation operation, by the described coal cooled in described refrigerating work procedure is exposed in the oxygen-containing atmosphere of 50 ~ 150 DEG C, thus chemically adsorbing oxygen and make its partial oxidation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-172756 | 2012-08-03 | ||
| JP2012172756 | 2012-08-03 | ||
| PCT/JP2013/063506 WO2014020965A1 (en) | 2012-08-03 | 2013-05-15 | Blast-furnace-blow-in charcoal and method for producing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104411838A true CN104411838A (en) | 2015-03-11 |
| CN104411838B CN104411838B (en) | 2017-03-29 |
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ID=50027659
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380035147.8A Expired - Fee Related CN104411838B (en) | 2012-08-03 | 2013-05-15 | Pulverized coal injection into blast furna and its manufacture method |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20150191803A1 (en) |
| JP (1) | JP5843968B2 (en) |
| KR (1) | KR101657427B1 (en) |
| CN (1) | CN104411838B (en) |
| AU (1) | AU2013297837B2 (en) |
| DE (1) | DE112013003846T5 (en) |
| IN (1) | IN2015DN00192A (en) |
| WO (1) | WO2014020965A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6551471B2 (en) * | 2016-07-29 | 2019-07-31 | Ｊｆｅスチール株式会社 | Blast furnace operation method |
| JP6551470B2 (en) * | 2016-07-29 | 2019-07-31 | Ｊｆｅスチール株式会社 | Blast furnace operation method |
| CN115353914A (en) * | 2022-09-13 | 2022-11-18 | 中国科学院广州能源研究所 | Tar purification treatment method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09263807A (en) * | 1996-03-27 | 1997-10-07 | Nisshin Steel Co Ltd | Method for injecting pulverized coal into blast furnace |
| JP2007169750A (en) * | 2005-12-26 | 2007-07-05 | Jfe Steel Kk | Method for operating blast furnace |
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| JP2011102439A (en) * | 2000-08-10 | 2011-05-26 | Jfe Steel Corp | Method for operating blast furnace by injecting large-quantity of fine-powdery coals |
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| JPH06220510A (en) | 1993-01-28 | 1994-08-09 | Sumitomo Metal Ind Ltd | Operation of blast furnace |
| JP2000237528A (en) * | 1999-02-22 | 2000-09-05 | Nkk Corp | Method for using coal, coal dry distillation product and its production |
| DE19912154C5 (en) * | 1999-03-17 | 2007-02-01 | Carbotex Produktions-Und Veredelungsbetriebe Gmbh | Process for the production of shaped activated carbon |
| JP4608752B2 (en) * | 1999-10-20 | 2011-01-12 | Ｊｆｅスチール株式会社 | High reactivity high strength coke for blast furnace and method for producing the same |
| JP4074467B2 (en) | 2002-03-29 | 2008-04-09 | 新日本製鐵株式会社 | Method for improving combustibility of low volatile pulverized coal in blast furnace |
| WO2007016528A2 (en) * | 2005-07-29 | 2007-02-08 | Primet Precision Materials, Inc. | Coal particle compositions and associated methods |
| US8298306B2 (en) * | 2008-02-13 | 2012-10-30 | David Walker Taylor | Process for improved gasification of fuel solids |
| AU2012254962A1 (en) * | 2008-03-13 | 2012-12-13 | Gtl Energy Ltd | Compacted Briquette |
| JP5177101B2 (en) * | 2008-09-16 | 2013-04-03 | 新日鐵住金株式会社 | Method for producing highly reactive small coke |
| WO2010087468A1 (en) * | 2009-02-02 | 2010-08-05 | 新日本製鐵株式会社 | Carbonaceous material for sintering iron ore |
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- 2013-05-15 US US14/412,921 patent/US20150191803A1/en not_active Abandoned
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| JPH09263807A (en) * | 1996-03-27 | 1997-10-07 | Nisshin Steel Co Ltd | Method for injecting pulverized coal into blast furnace |
| JP2011102439A (en) * | 2000-08-10 | 2011-05-26 | Jfe Steel Corp | Method for operating blast furnace by injecting large-quantity of fine-powdery coals |
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| DE112013003846T5 (en) | 2015-04-23 |
| JP5843968B2 (en) | 2016-01-13 |
| KR20150024913A (en) | 2015-03-09 |
| KR101657427B1 (en) | 2016-09-13 |
| AU2013297837A1 (en) | 2015-01-29 |
| US20150191803A1 (en) | 2015-07-09 |
| IN2015DN00192A (en) | 2015-06-12 |
| AU2013297837B2 (en) | 2016-03-10 |
| CN104411838B (en) | 2017-03-29 |
| WO2014020965A1 (en) | 2014-02-06 |
| JPWO2014020965A1 (en) | 2016-07-21 |
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