CN105408690A - Coal for boiler fuel - Google Patents
Coal for boiler fuel Download PDFInfo
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- CN105408690A CN105408690A CN201480041376.5A CN201480041376A CN105408690A CN 105408690 A CN105408690 A CN 105408690A CN 201480041376 A CN201480041376 A CN 201480041376A CN 105408690 A CN105408690 A CN 105408690A
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- boiler oil
- calcium
- boiler
- deterioration
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
-
- 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
- C10L2200/00—Components of fuel compositions
- C10L2200/02—Inorganic or organic compounds containing atoms other than C, H or O, e.g. organic compounds containing heteroatoms or metal organic complexes
- C10L2200/0204—Metals or alloys
- C10L2200/0213—Group II metals: Be, Mg, Ca, Sr, Ba, Ra, Zn, Cd, Hg
-
- 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
- C10L2200/00—Components of fuel compositions
- C10L2200/02—Inorganic or organic compounds containing atoms other than C, H or O, e.g. organic compounds containing heteroatoms or metal organic complexes
- C10L2200/0204—Metals or alloys
- C10L2200/024—Group VIII metals: Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/02—Combustion or pyrolysis
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/14—Injection, e.g. in a reactor or a fuel stream during fuel production
- C10L2290/146—Injection, e.g. in a reactor or a fuel stream during fuel production of water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/545—Washing, scrubbing, stripping, scavenging for separating fractions, components or impurities during preparation or upgrading of a fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/50—Blending
- F23K2201/505—Blending with additives
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
A coal (10) which is to be used as fuel for a coal-fired boiler and which comprises a modified coal (10) obtained by making calcium supported on a raw material coal (2) comprising brown coal or subbituminous coal, the molar amount of calcium being equivalent to or higher than the molar amount of sulfur contained in the raw material coal (2).
Description
Technical field
The present invention relates to a kind of boiler oil coal being used as coal-fired boiler fuel.
Background technology
In the coal-burning boiler taking coal as fuel for combustion, owing to containing oxysulfide (SOx) in the exhaust with coal burning generation, after therefore need removing oxysulfide from this exhaust, then discharge this exhaust.
Such as, propose there is a kind of method in following patent document 1, it passes through calcium oxide (CaO), calcium carbonate (CaCO
3), calcium hydroxide (Ca (OH)
2) etc. calcified material carry out LASER HEATING or plasma heating, produce the ultramicro powder (1 ~ 100nm) of calcium oxide (CaO), this ultramicro powder is jetted in stove or in flue react with the oxysulfide in exhaust, thus remove oxysulfide from exhaust.
Prior art document
Patent document
Patent document 1: Japanese Patent Laid-Open 5-269341 publication
Patent document 2: Japanese Patent Laid-Open 7-004610 publication
Patent document 3: Japanese Patent Laid-Open 9-126411 publication
Summary of the invention
The technical problem solved
But, laser ablation apparatus, catalytic behavior of materials generating means, arc-plasma generating means etc. must be arranged on boiler plant by the method proposed in described patent document 1, be applied on considerable coal-fired boiler if therefore want, then equipment cost becomes very high, and impracticable.
Therefore, strong expectation can produce the ultramicro powder of calcium oxide simply with low cost.
Technical scheme
For the first invention solving the exploitation of above-mentioned problem is the boiler oil coal being used as coal-fired boiler fuel, it is characterized in that, in the feed coal be made up of brown coal or ub-bituminous coal, there is the deterioration coal being supported with the above calcium of equimolar amounts relative to the sulphur mole in this feed coal.
In addition, the second invention is boiler oil coal, it is characterized in that, in the described boiler oil coal of the first invention, described deterioration coal is also supported with iron with the ratio of 0.1 ~ 5 % by weight relative to described feed coal dry weight.
In addition, 3rd invention is boiler oil coal, it is characterized in that, in the described boiler oil coal of the first or second invention, described deterioration coal relative to described feed coal dry weight with 4 ~ 10 % by weight ratio be supported with calcium, and it is made up of Mixture Density Networks, the basic coal be made up of at least one in bituminous coal, ub-bituminous coal, brown coal mixes with described deterioration coal by described Mixture Density Networks, makes described deterioration coal ratio reach 10 ~ 50 % by weight.
In addition, the 4th invention is boiler oil coal, it is characterized in that, in the first to the 3rd invention in boiler oil coal described in any one, has carried out destructive distillation process.
In addition, the 5th invention is boiler oil coal, it is characterized in that, in the described boiler oil coal of the 4th invention, has also carried out Passivation Treatment.
Beneficial effect
Boiler oil coal of the present invention is fed to after in boiler, high-temp combustion becomes exhaust as fuel injection, with high-temp combustion, the calcium oxide (CaO) produced by the calcium supported (Ca) composition can be had with ultramicro powder (particle diameter: number ~ tens of nm) state, therefore can produce the ultramicro powder of calcium oxide with low cost simply, thus significantly can cut down the cost of boiler plant cost.
Accompanying drawing explanation
Fig. 1 is the flow chart representing boiler oil coal first embodiment manufacturing step of the present invention.
Fig. 2 is the skeleton diagram that Fig. 1 supports treating apparatus used in process.
Fig. 3 is the skeleton diagram of application by the boiler plant of Fig. 1 manufacturing step gained boiler oil coal.
Fig. 4 is the flow chart representing boiler oil coal second embodiment manufacturing step of the present invention.
Fig. 5 is the skeleton diagram of application by the boiler plant of Fig. 4 manufacturing step gained boiler oil coal.
Fig. 6 is the flow chart representing boiler oil coal the 3rd embodiment manufacturing step of the present invention.
Fig. 7 is the skeleton diagram of application by the boiler plant of Fig. 6 manufacturing step gained boiler oil coal.
Fig. 8 is the flow chart representing boiler oil coal the 4th embodiment major part manufacturing step of the present invention.
Fig. 9 is the skeleton diagram supporting treating apparatus used in process of other embodiments of boiler oil coal of the present invention.
Detailed description of the invention
With reference to the accompanying drawings the embodiment of boiler oil coal of the present invention is described, but the present invention has more than the following embodiment being defined in and illustrating with reference to the accompanying drawings.
< first embodiment >
Be described according to first embodiment of Fig. 1 ~ 3 to boiler oil coal of the present invention.
Boiler oil coal described in present embodiment is the boiler oil coal being used as coal-fired boiler fuel, be made up of deterioration coal, described deterioration coal is supported with the calcium (Ca) of more than equimolar amounts in the feed coal be made up of brown coal or ub-bituminous coal relative to sulphur (S) mole in this feed coal.
Described in this present embodiment, boiler oil coal is as Fig. 1, shown in 2, by water 1, particle diameter (before and after 50mm) the described feed coal 2 (sulfur content 0.4 ~ 1.2 % by weight (time dry)) after pulverizing and regulating (about maximum particle diameter 5mm), calcium oxide (CaO), calcium carbonate (CaCO
3), calcium hydroxide (Ca (OH)
2) etc. calcified material 3 load treating apparatus 110 treatment trough 111 in stir (pH8 ~ 12) with stirring vane 112, calcium ion wash-out from calcified material 3 is made to cover in water 1, and contact with described feed coal 2, make to be present in the hydroxyl (-OH) in this feed coal 2, hydrogen ion and this calcium ion of carboxyl (-COOH) carry out ion-exchange, calcium is made to support this feed coal 2 with above-mentioned amount rear (in Fig. 1, S11), be separated (Fig. 1 from described treatment trough 111 interior by filtering to wait, S12), process (in Fig. 1 in washing as required, S13) processed is carried out after (in Fig. 1, S14), thus can obtain easily.
The boiler oil coal (deterioration coal) 10 of manufacture like this is through super-dry, pulverizing (particle diameter: before and after 0.1mm), as shown in Figure 3, be fed to high-temp combustion in boiler 211 (temperature: 1500 ~ 1700 DEG C) as fuel injection and become exhaust 6.
Now, in described exhaust 6, with above-mentioned high-temp combustion, there is the oxysulfide (SOx) produced by sulphur (S) composition contained in described boiler oil coal 10, and have the calcium oxide (CaO) produced by calcium (Ca) composition supported in described boiler oil coal 10 with ultramicro powder (particle diameter: number ~ tens of nm) state.
And, become calcium sulfate (CaSO after the oxysulfide in described exhaust 6 and the calcium oxide forming very bigger serface with ultramicro powder state react easily
4).
The described exhaust 6 that oxysulfide becomes calcium sulfate is through over-heat-exchanger 212 heat exchange and cool, and after then removing the solid 7 containing above-mentioned calcium sulfate etc. with dust arrester 213, is discharged to the outside from chimney 214.
That is, the past is to calcium oxide (CaO), calcium carbonate (CaCO
3), calcium hydroxide (Ca (OH)
2) etc. calcified material carry out LASER HEATING or plasma heating, produce the ultramicro powder (1 ~ 100nm) of calcium oxide (CaO), this ultramicro powder is jetted in stove or in flue react with the oxysulfide (SOx) in exhaust, thus oxysulfide is removed from exhaust, but in the present embodiment, the boiler oil coal (deterioration coal) 10 that calcium (Ca) will be supported on feed coal 2 with above-mentioned amount is used as boiler 211 fuel, with high-temp combustion, the calcium oxide (CaO) of ultramicro powder (number ~ tens of nm) is produced in exhaust 6, make oxysulfide (SOx) reaction in itself and this exhaust 6, thus oxysulfide is removed from exhaust 6.
Therefore, laser ablation apparatus, catalytic behavior of materials generating means, arc-plasma generating means etc. are needed to be arranged on boiler plant in the past, but in the present embodiment, said apparatus is not only needed to be arranged on boiler plant completely, and without the need to desulfurizer is arranged on boiler plant.
Therefore, described boiler oil coal 10 according to the present embodiment, can produce the ultramicro powder (number ~ tens of nm) of calcium oxide (CaO) simply with low cost, thus significantly can cut down the cost of boiler plant cost.
In addition, the calcium amount that described feed coal 2 supports needs relative to the sulphur mole in this feed coal 2 to be more than equimolar amounts.If this is because the calcium amount that described feed coal 2 supports is relative to the not enough equimolar amounts of the sulphur mole in this feed coal 2, then the oxysulfide produced with burning fully cannot be removed.
In addition, brown coal, ub-bituminous coal can be used as described feed coal 2, but be difficult to use bituminous coal.This is because brown coal, ub-bituminous coal there is necessary amount with calcium ion ion-exchange after support the hydroxyl (-OH), carboxyl (-COOH) etc. of calcium, but in bituminous coal, above-mentioned group very few being difficult to fully supports calcium.
< second embodiment >
According to Fig. 4,5 are described the second embodiment of boiler oil coal of the present invention.But, to the part identical with above-mentioned embodiment, by using the symbol using symbol identical with institute in the explanation of above-mentioned embodiment, in omission and above-mentioned embodiment, the explanation of repetition is described.
Described in present embodiment, boiler oil coal is made up of deterioration coal, described deterioration coal supports the calcium (Ca) of more than equimolar amounts in described feed coal 2 relative to sulphur (S) mole in this feed coal 2, and relative to this feed coal 2 dry weight with 0.1 ~ 5 % by weight ratio be supported with iron (Fe).
Boiler oil coal described in this present embodiment as shown in Figure 4, by water 1, described feed coal 2, described calcified material 3, ferric sulfate (FeSO
4) etc. the described treating apparatus of iron compound 4 loading identical with above-mentioned embodiment 110 described treatment trough 111 in stir (pH8 ~ 12) with described stirring vane 112, calcium ion wash-out from calcified material 3 is made to cover in water 1, and make iron ion wash-out from iron compound 4 cover in water 1, contact with described feed coal 2, make to be present in the hydroxyl (-OH) in this feed coal 2, the hydrogen ion of carboxyl (-COOH) and this calcium ion and this iron ion carry out ion-exchange, calcium and iron is made to support this feed coal 2 with above-mentioned amount respectively rear (in Fig. 4, S11), identical with above-mentioned embodiment, be separated (Fig. 4 from described treatment trough 111 interior by filtering to wait, S12), process (in Fig. 4 in washing as required, S13) processed is carried out after (in Fig. 4, S14), thus can obtain easily.
The boiler oil coal (deterioration coal) 20 of manufacture like this is through super-dry, pulverizing (particle diameter: before and after 0.1mm), as shown in Figure 5, be fed to high-temp combustion in described boiler 211 (temperature: 1500 ~ 1700 DEG C) as fuel injection and become exhaust 6.
Now, in described exhaust 6, there is oxysulfide (SOx) and calcium oxide with the state identical with above-mentioned embodiment, and there is the iron oxide (FeO) produced by iron (Fe) composition supported in described boiler oil coal 20 with ultramicro powder (particle diameter: number ~ tens of nm) state.
And, the oxysulfide in described exhaust 6 is identical with above-mentioned embodiment react with calcium oxide after become calcium sulfate (CaSO
4).On the other hand, the iron oxide in the described exhaust 6 of very bigger serface is formed with ultramicro powder state, contact with the carbon component of very high probability with described boiler oil coal 20, make this carbon component conscientiously burn (oxidation) by catalyst function.
Oxysulfide becomes calcium sulfate and carbon component burns conscientiously, and the described exhaust 6 of (oxidation) cools through described heat exchanger 212 heat exchange, then remove containing above-mentioned calcium sulfate etc. with described dust arrester 213 and after the less solids 8 of unburned carbon composition, be discharged to the outside from described chimney 214.
Namely, in the present embodiment, the boiler oil coal (deterioration coal) 20 that calcium (Ca) and even iron (Fe) will be made to support feed coal 2 is used as the fuel of boiler 211, with high-temp combustion, produce the iron oxide (FeO) of ultramicro powder (number ~ tens of nm) together with calcium oxide (CaO) in exhaust 6, while remove oxysulfide from exhaust 6, carbon component is made conscientiously to burn (oxidation).
Therefore, in the present embodiment, the efficiency of combustion in described boiler 211 is can further improve compared with above-mentioned embodiment.
Therefore, described boiler oil coal 20, not only can obtain the action effect identical with above-mentioned embodiment according to the present embodiment, also can reduce unburned carbon composition residual in the described solid 8 reclaimed with described dust arrester 213 compared with above-mentioned embodiment.
In addition, the iron that described feed coal 2 supports is preferably 0.1 ~ 5 % by weight relative to this feed coal 2 dry weight.If this is because the iron that supports of described feed coal 2 relative to this feed coal 2 dry weight less than 0.1 % by weight, then cannot give full play to above-mentioned action effect, if relative to this feed coal 2 dry weight more than 5 % by weight, support treatment S 11 required time then long, and improve efficiency of combustion and can run into critical.
(the 3rd embodiment)
According to Fig. 6,7 are described the 3rd embodiment of boiler oil coal of the present invention.But, to the part identical with above-mentioned embodiment, by using the symbol using symbol identical with institute in the explanation of above-mentioned embodiment, in omission and above-mentioned embodiment, the explanation of repetition is described.
Described in present embodiment, boiler oil coal is made up of Mixture Density Networks, deterioration coal mixes with basic coal by described Mixture Density Networks, the ratio of above-mentioned deterioration coal is made to reach 10 ~ 50 % by weight, described deterioration coal in described feed coal 2 relative to this feed coal 2 dry weight with 4 ~ 10 % by weight ratio (be equimolar amounts more than relative to sulphur (S) mole) support calcium (Ca), and relative to this feed coal 2 dry weight with 0.1 ~ 5 % by weight ratio be supported with iron (Fe), described basic coal is made up of at least one in bituminous coal, ub-bituminous coal, brown coal.
Boiler oil coal described in this present embodiment as shown in Figure 6, by water 1, described feed coal 2, described calcified material 3, ferric sulfate (FeSO
4) etc. the described treating apparatus of iron compound 4 loading identical with above-mentioned embodiment 110 described treatment trough 111 in stir (pH8 ~ 12) with described stirring vane 112, calcium ion wash-out from calcified material 3 is made to cover in water 1, and make iron ion wash-out from iron compound 4 cover in water 1, contact with described feed coal 2, make to be present in the hydroxyl (-OH) in this feed coal 2, the hydrogen ion of carboxyl (-COOH) and this calcium ion and this iron ion carry out ion-exchange, calcium and iron is made to support this feed coal 2 with above-mentioned amount respectively rear (in Fig. 6, S11), identical with above-mentioned embodiment, be separated (Fig. 6 from described treatment trough 111 interior by filtering to wait, S12), process (in Fig. 6 in washing as required, S13) processed is carried out after (in Fig. 6, S14), obtain deterioration coal 30, then to by bituminous coal, ub-bituminous coal, the basic coal 5 of at least one composition in brown coal carries out mixed processing (in Fig. 6 with above-mentioned deterioration coal 30, S15), the ratio of this deterioration coal 30 is made to reach 10 ~ 50 % by weight, thus can obtain easily.
The boiler oil coal (Mixture Density Networks) 40 of manufacture like this is through super-dry, pulverizing (particle diameter: before and after 0.1mm), as shown in Figure 7, be fed to high-temp combustion in described boiler 211 (temperature: 1500 ~ 1700 DEG C) as fuel injection and become exhaust 6.
Now, in described exhaust 6, with above-mentioned high-temp combustion, there is the oxysulfide (SOx) produced by sulphur (S) composition contained in described boiler oil coal 40, and there is the calcium oxide (CaO) and iron oxide (FeO) that are produced by calcium (Ca) composition supported in the described deterioration coal 30 of this boiler oil coal 40 and iron (Fe) composition with ultramicro powder (particle diameter: number ~ tens of nm) state.
And, become calcium sulfate (CaSO after the calcium oxide in described exhaust 6 and the oxysulfide (SOx) produced by sulphur (S) composition contained in described deterioration coal 30 and described basic coal 5 react
4), and the iron oxide in described exhaust 6 contacts with the carbon component of very high probability with described deterioration coal 30 and described basic coal 5, makes this carbon component conscientiously burn (oxidation) by catalyst function.
Oxysulfide becomes calcium sulfate and carbon component burns conscientiously, and the described exhaust 6 of (oxidation) is identical with above-mentioned embodiment, through described heat exchanger 212 heat exchange cooling, then, after removing described solid 8 with described dust arrester 213, be discharged to the outside from described chimney 214.
Namely, in the present embodiment, be supported in this feed coal 2 with calcium more than the integral molar quantity same molar of the sulphur Component molar amount contained in the sulphur Component molar amount contained in described feed coal 2 and described basic coal 5, thus the oxysulfide that the sulphur composition in the described basic coal 5 not supporting calcium can be made to produce also becomes calcium sulfate, then remove from described exhaust 6.
Therefore, in the present embodiment, the described basic coal 5 not supporting calcium also can be used as fuel and is fed in described boiler 211, can reduce and in feed coal 2, support process to calcium and the use amount of deterioration coal 30 that obtains.
Therefore, described boiler oil coal 40, not only can obtain the action effect identical with above-mentioned embodiment according to the present embodiment, also can efficiently manufacture compared with above-mentioned embodiment, thus can cut down manufacturing cost.
In addition, the ratio of the described deterioration coal 30 in described boiler oil coal (Mixture Density Networks) 40 is preferably 10 ~ 50 % by weight, in other words, the ratio of the described basic coal 5 in described boiler oil coal (Mixture Density Networks) 40 is preferably 50 ~ 90 % by weight.If this is because the ratio of described basic coal 5 in described boiler oil coal (Mixture Density Networks) 40 is less than 50 % by weight, then be difficult to the manufacture efficiency significantly improving boiler oil coal 40, if more than 90 % by weight, according to the shape of described basic coal 5, there will be the possibility that the oxysulfide produced from sulphur composition in this basic coal 5 fully cannot be become calcium sulfate.
In addition, the calcium amount that described feed coal 2 supports is preferably 4 ~ 10 % by weight relative to this feed coal 2 dry weight.If this is because the calcium amount that supports of described feed coal 2 relative to this feed coal 2 dry weight less than 4 % by weight, then according to the proterties of described basic coal 5, the mixed proportion with this basic coal 5, there will be the possibility that the oxysulfide produced from sulphur composition in this basic coal 5 fully cannot be become calcium sulfate, if relative to this feed coal 2 dry weight more than 10 % by weight, then this feed coal 2 to support treatment S 11 required time long, cause manufacturing efficiency to reduce, be difficult to cut down manufacturing cost.
(the 4th embodiment)
According to Fig. 8, the 4th embodiment of boiler oil coal of the present invention is described.But, to the part identical with above-mentioned embodiment, by using the symbol using symbol identical with institute in the explanation of above-mentioned embodiment, in omission and above-mentioned embodiment, the explanation of repetition is described.
Boiler oil coal described in present embodiment carries out destructive distillation process to described Mixture Density Networks 40, and carries out Passivation Treatment.
Boiler oil coal described in this present embodiment as shown in Figure 8, the described Mixture Density Networks 40 that obtain same with above-mentioned 3rd embodiment is loaded in drying device and carries out heat drying (100 DEG C of front and back) and remove moisture (in Fig. 8, S21), then move on in the inert gas environments such as the inherent nitrogen of destructive distillation device and heat destructive distillation (400 DEG C of front and back), to remove after the volatile ingredient of mercurous (Hg) etc. (in Fig. 8, S22), this destructive distillation coal is moved on in cooling device and cool (50 DEG C of front and back) (in Fig. 8, S23), then move on in passivation device, in passivation environment, (oxygen concentration: number ~ 21 volume %) is to carry out after Passivation Treatment (in Fig. 8 through the surface of overactivation, S24), prilling granulator is utilized to be shaped to granular (in Fig. 8, S25), thus can obtain easily.
That is, boiler oil coal 50 described in present embodiment also implements destructive distillation process to described boiler oil coal (Mixture Density Networks) 40, and implements Passivation Treatment.
Therefore, at boiler oil described in present embodiment with in coal 50, owing to removing most of volatile ingredients such as mercury in advance, burn even if it can be used as fuel to be fed in described boiler 211, also the mercury content in described exhaust 6 can be reduced to few, thus control to discharge below concentration in regulation.
Therefore, described boiler oil coal 50 according to the present embodiment, not only can obtain the action effect identical with above-mentioned embodiment, mercury content in described exhaust 6 can also be reduced to few, therefore being arranged on boiler plant without the need to mercury being removed device, the cost of boiler plant cost can be reduced further.
Other embodiments of < >
In addition, calcified material 3 not only can use calcium oxide (CaO), calcium carbonate (CaCO
3), calcium hydroxide (Ca (OH)
2) etc. powder, coccoid etc., the calciferous waste material such as such as gypsum waste, cement waste material, shell, flyash, iron and steel slag can also be used.
If the described solid 7 particularly will reclaimed with described dust arrester 213, the calcium sulfate in 8 utilizes as calcified material 3, just reusable edible calcium source, can greatly suppress discarded object to produce, therefore very preferably.If similarly utilized as iron compound 4 by the ferric sulfate in the described solid 8 reclaimed with described dust arrester 213, just reusable edible source of iron, can discarded object be greatly suppressed to produce, therefore very preferably.
Herein, when above-mentioned discarded object is utilized as calcified material 3, such as shown in Figure 9, stir with stirring vane 112 in the treatment trough 111 water 1 and described feed coal 2 being loaded treating apparatus 210, and water 1 and described calcified material 3 are loaded in wash-out groove 213 and stir with stirring vane 214, calcium ion wash-out from calcified material 3 is made to cover in the water 1 in above-mentioned wash-out groove 213, by filter 213a, this water 1 is transported in above-mentioned treatment trough 111 from this wash-out groove 213, and by filter 111a, water 1 is turned back in above-mentioned wash-out groove 213 with the amount be transported in this treatment trough 111 from this treatment trough 111, to mix with described feed coal 2 without the need to making described calcified material 3 (discarded object) and just can support calcium in this feed coal 2, thus can easily this calcified material 3 (discarded object) be separated with this feed coal 2, therefore very preferably.
Now, be difficult to eluting calcium ion from described calcified material 3 (discarded object), when being difficult to make water 1 reach pH8 ~ 12, in described treatment trough 111, adding pH adjusting agent (such as calcium hydroxide, calcium carbonate etc.) 9 regulate pH, make water 1 reach pH8 ~ 12.
In addition, in above-mentioned 3rd, the 4th embodiment, the described deterioration coal 30 supporting calcium and iron in the described feed coal 2 of mixing is illustrated with the Mixture Density Networks (boiler oil coal) 40 of described basic coal 5, but other embodiments, such as mix and do not support iron in described feed coal 2 and support the deterioration coal of calcium and the Mixture Density Networks (boiler oil coal) of described basic coal 5, also can apply identically with above-mentioned embodiment.
In addition, in the above-described 4th embodiment, described Mixture Density Networks (boiler oil coal) 40 is loaded drying device heat drying, then move on to after heating destructive distillation in destructive distillation device, this destructive distillation coal is moved on in cooling device and cools, then move on to after carrying out Passivation Treatment in passivation device, be shaped to granular with prilling granulator, thus manufacture boiler oil coal 50, but as other embodiments, such as, also can described deterioration coal 30 be mixed while load heat drying in drying device with described basic coal 5, then move on to after heating destructive distillation in destructive distillation device, this destructive distillation coal is moved on in cooling device and cools, then move on to after carrying out Passivation Treatment in passivation device, be shaped to granular with prilling granulator, thus manufacture boiler oil coal 50.
In addition, in the above-described 4th embodiment, implement destructive distillation process and Passivation Treatment to the described deterioration coal of mixing 30 and the Mixture Density Networks (boiler oil coal) 40 of described basic coal 5 to manufacture boiler oil coal 50 and be illustrated, but as other embodiments, such as, destructive distillation process and Passivation Treatment acquisition boiler oil coal can also be implemented to the described deterioration coal 10,20 obtained with first, second embodiment above-mentioned.
In addition, in the above-described 4th embodiment, implement destructive distillation process and Passivation Treatment to described boiler oil coal 40 to manufacture boiler oil coal 50 and be illustrated, but as other embodiments, such as, after destructive distillation process without the need to carry at a distance just can utilize as boiler oil within a short period of time time, also can omit Passivation Treatment.
So, the boiler oil coal of the present invention appropriately combined rear enforcement of technology item that can will illustrate in the respective embodiments described above as required.
Embodiment
For confirming the effect of boiler oil coal of the present invention, carry out following validation test.
[making of test body]
< test body A>
The deterioration coal (15 % by weight) being supported with calcium (8 % by weight) in the feed coal be made up of brown coal is loaded drier with the basic coal be made up of brown coal (85 % by weight) to be mixed while heat drying, then move on to after heating destructive distillation in destructive distillation device, this destructive distillation coal is moved on in cooling device and cools, then move on to after carrying out Passivation Treatment in passivation device, be shaped to prilling granulator granular, thus obtain boiler oil with coal (test body A).
< test body B>
Calcium (6 % by weight) will be supported with and the deterioration coal (15 % by weight) being supported with iron (2 % by weight) loads drier with the basic coal be made up of brown coal (85 % by weight) mixes while heat drying in the feed coal be made up of brown coal, then move on to after heating destructive distillation in destructive distillation device, this destructive distillation coal is moved on in cooling device and cools, then move on to after carrying out Passivation Treatment in passivation device, be shaped to prilling granulator granular, thus obtain boiler oil with coal (test body B).
< comparing bulk >
The basic coal (100 % by weight) be made up of brown coal is loaded mixing limit, drier limit heat drying, then move on to after heating destructive distillation in destructive distillation device, this destructive distillation coal is moved on in cooling device and cools, then move on to after carrying out Passivation Treatment in passivation device, be shaped to prilling granulator granular, thus obtain boiler oil with coal (comparing bulk).
[test method]
By above-mentioned test body A, B and above-mentioned comparing bulk respectively as high-temp combustion in fuel injection to boiler, obtain respectively produce sulfur dioxide concentration in exhaust and reclaim unburned carbon ratio in solid.
[result of the test]
Result of the test as described in Table 1.
Table 1
Can be learnt by above-mentioned table 1, in comparing bulk (not supporting Ca and Fe), in exhaust, sulfur dioxide concentration substantially exceeds a reference value (100ppm), and the unburned carbon ratio that reclaims in solid more.
In contrast, can confirm, in test body A (only supporting Ca) and test body B (supporting Ca and Fe), sulfur dioxide concentration in exhaust can be made to be less than a reference value (100ppm).And, can confirm in test body B, the unburned carbon ratio in reclaimed solid can be made very little.
Industrial applicibility
Boiler oil coal of the present invention can produce the ultramicro powder of calcium oxide simply with low cost, thus significantly can cut down the cost of boiler plant cost, therefore industrially can be used very valuably.
Description of reference numerals
1 water
2 feed coals
3 calcified materials
4 iron compounds
5 basic coals
6 exhausts
7,8 solid
9pH conditioning agent
10,20 deterioration coals (boiler oil coal)
30 deterioration coals
40 Mixture Density Networks (boiler oil coal)
50 boiler oil coals
110,120 treating apparatus
111 treatment troughs
111a filter
112 stirring vanes
123 wash-out grooves
123a filter
124 stirring vanes
211 boilers
212 heat exchangers
213 dust arresters
214 chimneys
Claims (5)
1. a boiler oil coal, it is the boiler oil coal being used as coal-fired boiler fuel, it is characterized in that,
In the feed coal be made up of brown coal or ub-bituminous coal, there is the deterioration coal being supported with the above calcium of equimolar amounts relative to the sulphur mole in described feed coal.
2. boiler oil coal according to claim 1, is characterized in that,
Described deterioration coal is also supported with iron with the ratio of 0.1 ~ 5 % by weight relative to described feed coal dry weight.
3., according to boiler oil coal according to claim 1 or claim 2, it is characterized in that,
Described deterioration coal relative to described feed coal dry weight with 4 ~ 10 % by weight ratio be supported with calcium,
And it is made up of Mixture Density Networks, the basic coal be made up of at least one in bituminous coal, ub-bituminous coal, brown coal mixes with described deterioration coal by described Mixture Density Networks, makes described deterioration coal ratio reach 10 ~ 50 % by weight.
4. the boiler oil coal according to any one of claim 1 to claim 3, is characterized in that,
Carry out destructive distillation process.
5. boiler oil coal according to claim 4, is characterized in that,
Also carry out Passivation Treatment.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-158716 | 2013-07-31 | ||
| JP2013158716A JP2015030739A (en) | 2013-07-31 | 2013-07-31 | Coal for boiler fuel |
| PCT/JP2014/062419 WO2015015855A1 (en) | 2013-07-31 | 2014-05-09 | Coal for boiler fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105408690A true CN105408690A (en) | 2016-03-16 |
Family
ID=52431402
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480041376.5A Pending CN105408690A (en) | 2013-07-31 | 2014-05-09 | Coal for boiler fuel |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20160168496A1 (en) |
| JP (1) | JP2015030739A (en) |
| CN (1) | CN105408690A (en) |
| AU (1) | AU2014297739A1 (en) |
| DE (1) | DE112014003542T5 (en) |
| WO (1) | WO2015015855A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964580A (en) * | 2019-11-04 | 2020-04-07 | 山西潞安煤基合成油有限公司 | Preparation method of high-concentration gasified coal water slurry |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016040364A (en) * | 2014-08-11 | 2016-03-24 | 三菱重工業株式会社 | Modified coal manufacturing facility and method |
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| WO2013103097A1 (en) * | 2012-01-06 | 2013-07-11 | 三菱重工業株式会社 | Method for deactivating coal |
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- 2014-05-09 AU AU2014297739A patent/AU2014297739A1/en not_active Abandoned
- 2014-05-09 DE DE112014003542.4T patent/DE112014003542T5/en not_active Withdrawn
- 2014-05-09 CN CN201480041376.5A patent/CN105408690A/en active Pending
- 2014-05-09 WO PCT/JP2014/062419 patent/WO2015015855A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2015015855A1 (en) | 2015-02-05 |
| JP2015030739A (en) | 2015-02-16 |
| AU2014297739A1 (en) | 2016-02-11 |
| US20160168496A1 (en) | 2016-06-16 |
| DE112014003542T5 (en) | 2016-05-12 |
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