KR20180061323A - Gasification method of carbonaceous fuel, operating method of steel mill and method of producing gasified gas - Google Patents

Gasification method of carbonaceous fuel, operating method of steel mill and method of producing gasified gas Download PDF

Info

Publication number
KR20180061323A
KR20180061323A KR1020187012291A KR20187012291A KR20180061323A KR 20180061323 A KR20180061323 A KR 20180061323A KR 1020187012291 A KR1020187012291 A KR 1020187012291A KR 20187012291 A KR20187012291 A KR 20187012291A KR 20180061323 A KR20180061323 A KR 20180061323A
Authority
KR
South Korea
Prior art keywords
gas
carbonaceous fuel
gasification
gasifying agent
gasification furnace
Prior art date
Application number
KR1020187012291A
Other languages
Korean (ko)
Inventor
가츠히코 다카기
야스히로 모기
Original Assignee
제이에프이 스틸 가부시키가이샤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 제이에프이 스틸 가부시키가이샤 filed Critical 제이에프이 스틸 가부시키가이샤
Publication of KR20180061323A publication Critical patent/KR20180061323A/en

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K3/00—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide
    • C10K3/02—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide by catalytic treatment
    • C10K3/04—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide by catalytic treatment reducing the carbon monoxide content, e.g. water-gas shift [WGS]
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0913—Carbonaceous raw material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953—Gasifying agents
    • C10J2300/0966—Hydrogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953—Gasifying agents
    • C10J2300/0969—Carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953—Gasifying agents
    • C10J2300/0973—Water
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953—Gasifying agents
    • C10J2300/0973—Water
    • C10J2300/0976—Water as steam
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0983—Additives
    • C10J2300/0993—Inert particles, e.g. as heat exchange medium in a fluidized or moving bed, heat carriers, sand
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0983—Additives
    • C10J2300/0996—Calcium-containing inorganic materials, e.g. lime
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0073—Selection or treatment of the reducing gases

Abstract

A method of gasifying a carbonaceous fuel capable of gasifying a carbonaceous fuel at a high yield, a method of operating a steelmaking plant using carbonaceous fuel gasified at a high yield, and a method of producing a gasification gas at a high yield from a carbonaceous fuel A method for producing a gasified gas. This problem is solved by supplying a gasifying agent containing carbonaceous fuel and H 2 , CO 2 and H 2 O to a fluidized bed gasification furnace using calcium oxide as a fluidizing medium.

Figure pct00001

Description

Gasification method of carbonaceous fuel, operating method of steel mill and method of producing gasified gas

The present invention relates to a method of gasifying a carbonaceous fuel using a fluidized bed gasification furnace, a method of operating a steelworks, and a method of producing a gasified gas.

BACKGROUND ART In the past, many techniques have been disclosed as a method for converting a carbonaceous fuel such as coal into a product gas having a relatively high calorific value by gasification.

For example, Patent Document 1, and withdrawing a portion of the product gas produced in a coal gasification (拔出) and by burning the product gas withdrawn by oxygen converted to CO 2 and H 2 O, and the CO 2 H 2 O gas as a carrier gas for supplying coal to a coal gasification furnace.

In the coal gasification system of Patent Document 1, by having such a configuration, the combustion heat of the generated gas is increased as compared with the case where coal is conveyed by N 2 .

In Patent Document 2, as a gasification furnace for supplying pure oxygen, a steel by-product gas containing CO 2 generated from a steelmaking furnace is supplied to a gasification furnace to produce coal produced by coal gasification and CO the method of by the CO produced by the reaction of 2, to modify the generated gas increases the amount of heat generated is disclosed.

Patent Document 3 discloses a coal gasification gasifier comprising a fluidized-bed gasification reactor (reactor) in which a fluidized bed composed of a mixture of coal coke particles and a fluidized medium is accommodated, and means for condensing sunlight on the upper surface of the fluidized bed, A gasification furnace has a draft tube formed by being buried in a fluidized bed and means for introducing water vapor into a gasification furnace from below and a fluidized bed circulatingly flows inside and outside the draft tube by the introduced steam, have. In Patent Document 3, quartz glass (SiO 2 ) is mainly used as a fluid medium.

The apparatus described in Patent Document 3 uses a fluidized bed composed of a mixture of coal coke particles and a fluidized medium to prevent a decrease in the reaction rate of the fluidized bed particles and to promote the gasification reaction smoothly.

Patent Document 4 discloses a gasification method in which water vapor is used as a gasifying agent and CaO is used as a flow catalyst in the co-gasification of biomass and coal.

Specifically, Patent Document 4 discloses a method for producing a coal gasification catalyst by using a three-phase circulating fluidized bed composed of a fluidized bed combustion column, a fluidized bed tar reforming column, and a fluidized bed gasification column in the ungasification of biomass and coal, CaO is used as an absorbent for CO 2 and H 2 S, and CaO is circulated in an apparatus for connecting three towers, and biomass, coal and high-temperature steam are supplied to the gasification column for thermal decomposition by contact with a heating medium, A method of generating gas and tea (fixed carbon), and further, a part of the tea is gasified by steam to produce a gasified gas. Patent Document 4 discloses a method of reforming a catalyst of a tar by introducing volatile gas, gasified gas and steam generated in the gasification tower into a tar reforming column and bringing the vapor reforming catalyst into contact with a heating medium and introducing the coal into the combustion tower together with the heating medium It is also disclosed that the temperature of the tar reforming column and the gasification column is maintained by heating the heating medium by burning the car with air and returning the heated heating medium to the tar reforming column and the gasification column via the cyclone.

Since this method is steam gasification, the gasification reaction is thought to be the main reaction of steam reforming reaction of methane represented by equation (1).

CH 4 + H 2 O? CO + 3H 2 (1)

Japanese Patent Application Laid-Open No. 2000-355693 Japanese Patent Application Laid-Open No. 2007-9069 Japanese Laid-Open Patent Publication No. 2015-86232 Japanese Laid-Open Patent Publication No. 2014-74144

However, the above-mentioned conventional techniques have the following problems.

Equipment as described in Patent Document 1, by the withdrawal of a portion of the product gas produced in a gasifier combustion with oxygen to convert CO 2 and H 2 O, and the conveying gas of a mixed gas of CO 2 and H 2 O coal do.

Therefore, the ratio of CO 2 and H 2 O fed into the gasification furnace as the carrier gas can not be controlled arbitrarily. As a result, the produced gases can not be produced at a high yield by controlling the respective reaction amounts of the following formulas (2) and (3).

C + CO 2 ? 2CO ????? (2)

C + H 2 O? CO + H 2 (3)

The method described in Patent Document 2 is a method of modifying the product gas by the formula (2) by the difference between CO 2 in the steel by-product gas and the difference obtained in the gasification furnace, depending on the CO 2 concentration in the steel by- And the reforming efficiency is determined.

Therefore, it is the same as the equipment described in Patent Document 1 that the generated gas can not be produced at a high yield.

In the apparatus described in Patent Document 3, the gasification reaction can be carried out using solar energy, and the gasification reaction can proceed smoothly, but the yield of the produced gas is not sufficient.

In the case of using silicon dioxide as the fluidizing medium, when carbonaceous fuel containing a large amount of sodium, such as sub-bituminous coal, is used as the gasification raw material, sodium and silicon dioxide react to form soda glass, and the soda glass is melted in the gasification furnace , There is a problem that gasification can not be performed smoothly.

Further, in the method described in Patent Document 4, the ratio of coal in the raw material is only 10% at maximum, so that the carbonaceous fuel can not be gasified at a high yield. In addition, since CaO acts as a catalyst for the steam reforming reaction of methane represented by the above-mentioned formula (1) in which a large amount of H 2 is produced, it is possible to produce CO, which is a high combustion heat component in the produced gas, There is no problem.

Accordingly, an object of the present invention is to provide a gasification method of a carbonaceous fuel capable of gasifying a carbonaceous fuel at a high yield, a method of operating a steel mill for gasifying and using a carbonaceous fuel at a high yield, The present invention provides a method for producing a gasified gas capable of producing a gas.

As a result of intensive investigations to solve the above problems, the inventors of the present invention have found that when a carbonaceous fuel is gasified in a fluidized bed gasification furnace, a gasifying agent containing H 2 , CO 2 and H 2 O is supplied to the fluidized bed gasification furnace , And it is effective to use calcium oxide (CaO) as a fluid medium. Further, the present inventors have also found knowledge about a preferable production method of the gasifying agent to be used, and the present invention has been completed.

The present invention has been made based on this finding, and it is intended to provide the following.

That is, in the method of gasifying a carbonaceous fuel of the present invention, in the gasification of a carbonaceous fuel in a fluidized bed gasification furnace, liquefied lime is used as a fluidizing medium, and a gasifying agent containing H 2 , CO 2 and H 2 O, To a gasification furnace, and a method of gasifying the carbonaceous fuel.

In the gasification method of the carbonaceous fuel of the present invention, it is preferable that the gasifying agent is obtained by adding excess steam to the iron by-product gas and then performing the shift-modification.

It is preferable that the steel by-product gas has a CO concentration of 5 vol% or more and an N 2 concentration of 60 vol% or less.

It is preferable that the carbonaceous fuel is at least one selected from peat, lignite and bituminous coal.

A first aspect of a method for operating a steelworks of the present invention is a method for operating a steelworks by supplying a carbonaceous fuel and a gasifying agent containing H 2 , CO 2 and H 2 O to a fluidized bed gasification furnace using quicklime as a fluidizing medium, A method of operating a steelworks that gasifies vaginal fuel and uses the generated gas as at least a part of the energy source of the steelworks.

The second aspect of the method of operating a steelworks of the present invention is a method of operating a steelworks by supplying a carbonaceous fuel and a gasifying agent containing H 2 , CO 2 and H 2 O to a fluidized bed gasification furnace using calcium oxide as a fluidizing medium, And gasifying the carbonaceous fuel to use the generated gas as at least a part of a reducing material of iron oxide.

In the method for operating the steelworks of the present invention, it is preferable that the gasifying agent is obtained by adding excess steam to the iron-based byproduct gas and then performing the shift modification.

It is also preferable that the generated gas is a mixed gas containing CO, H 2, and hydrocarbons having 1 to 4 carbon atoms.

The method for producing a gasified gas according to the present invention is a method for producing a gasified gas by supplying a carbonaceous fuel and a gasifying agent containing H 2 , CO 2 and H 2 O to a fluidized bed gasification furnace using quicklime as a fluid medium, And gasifying the fuel. The present invention also provides a method for producing a gasified gas.

In the gasification gas producing method of the present invention, it is preferable that the gasifying agent is obtained by adding excess steam to a steel by-product gas and then performing a shift modification.

According to the gasification method of the carbonaceous fuel of the present invention, the carbonaceous fuel can be gasified at a high yield, and the carbonaceous fuel can be gasified at low cost. Further, according to the method of operating the steelworks of the present invention, the carbonaceous fuel is gasified at a high yield, and the generated gas is used for reducing the energy source of the steelworks or the iron oxide, thereby reducing the operating cost in the steelworks. Further, according to the method for producing a gasified gas of the present invention, the gasified gas can be produced at a high yield by gasification of the carbonaceous fuel.

1 is a conceptual diagram for explaining an example of a method for gasifying a carbonaceous fuel of the present invention, a method for operating a steel mill, and a method for producing a gasified gas.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a method of gasifying a carbonaceous fuel, a method of operating a steel mill, and a method of producing a gasified gas according to the present invention will be described in detail with reference to the preferred examples shown in the accompanying drawings.

Fig. 1 is a conceptual diagram for explaining an example of a method of gasifying a carbonaceous fuel of the present invention, a method of operating a steel mill, and a method of producing a gasified gas. The method of operating a steel mill of the present invention is a method of using a generated gas produced by the method shown in Fig. 1 as at least a part of energy in a steel mill or at least a part of a reducing material in reducing iron oxide in a steel mill will be.

The present invention gasifies a carbonaceous fuel such as coal.

1, a gas dispersion plate 12 is formed in the fluidized bed gasification furnace 10, and on the gas dispersion plate 12 in the fluidized bed gasification furnace 10, calcium oxide (powdery ) Is filled to form the fluidized bed 16. In the following description, the " fluidized-bed gasification furnace 10 " is also referred to as a " gasification furnace 10 ".

A shift transformer 14 is formed below the gasification furnace 10. In Fig. 1, the steel by-product gas and steam are supplied to the shift transformer 14, and the steel by-product gas (shift-modified steel by-product by-product gas) denatured in the shift transformer 14 is used as the gasifying agent. This gasifying agent is blown into the fluidized bed 16 through the gas distributor 12 to supply the gasifying agent to the gasification furnace 10 and to fluidize the fluidized bed 16,

A carbonaceous fuel such as lignite to be a gasification raw material is supplied in a predetermined amount by a feeder (not shown), and is supplied continuously or intermittently in a fixed amount from the upper part into the gasification furnace 10. The carbonaceous fuel supplied to the gasification furnace 10 is gasified by the action of the gasifying agent and quicklime as a fluid medium. The produced gas produced by the gasification of the carbonaceous fuel is discharged (recovered) from the upper portion of the gasification furnace 10.

In the present invention, the gasification furnace 10 has no limitation. Therefore, in addition to a general bubble fluidized bed, various known types of fluidized bed gasification furnaces such as a fast fluidized bed, an outer circulating fluidized bed, or an inner circulating fluidized bed can be used.

The present invention uses a fluidized-bed gasification furnace with a fast heat transfer and uses a quicklime as a fluidizing medium to eliminate the temperature distribution so that the reaction progresses in the gasification furnace and the generated gas becomes uniform, By sufficiently manifesting the action of the quicklime as a catalyst, it becomes possible to gasify the carbonaceous fuel with a high yield.

There is no limitation on the shift transformer 14, and a known reactor capable of performing a shift-modifying reaction, such as a fixed bed reactor or a fluidized bed reactor, can be used.

The shift modifier 14 is usually filled with a commercially available shift catalyst. As the shift catalyst, there are a low temperature shift catalyst and a high temperature shift catalyst, but either of them can be used in the present invention.

In the illustrated example, the shift by-product generator 14 is supplied with steam by-product gas and water vapor, both of which are adjusted in flow rate in a known manner. If necessary, it may be pre-heated by steam by-product gas, steam, or a mixed gas of steam by-product gas and steam.

The shift transformer 14 is supplied with a mixed gas of a steel by-product gas and excess water vapor. In addition, the excessive water vapor means an excessive amount of CO contained in the iron by-product gas in the below-described formula (4).

The by-produced by-product gas contains CO and H 2 O. When the steel byproduct gas and excess steam are supplied to the shift modifier 14, the steel by-product gas is subjected to shift-modification as shown in the following equation (4), whereby a gasifying agent containing CO 2 , H 2 and H 2 O Seasonal by-product gas).

CO + H 2 O? CO 2 + H 2 (4)

Namely, CO 2 and H 2 due to the shift modification and H 2 O, which is an excess of water vapor added in excess, are contained in the shift-modified gasifier by adding excessive water vapor to the iron byproduct gas.

As described above, the carbonaceous fuel, which is a gasification raw material, is supplied in a constant amount continuously or intermittently from the upper part of the gasification furnace 10.

The carbonaceous fuel supplied into the gasification furnace 10 is gasified by the action of the gasifying agent and the fluid medium. Although shown later in the examples, the present invention is also applicable to the gasification of a carbonaceous fuel using a fluidized bed gasification furnace, in which by using quicklime as a fluidizing medium (fluidized bed 16) Gas (gasified gas) can be produced. For this reason, it is presumed that the quicklime has a catalytic function for the gasification reaction of the carbonaceous fuel, but the details are unknown.

Examples of the catalytic function by the quicklime include various reforming reactions such as the equations (5) to (8) and the hydrogenolysis reaction such as the equation (9). In the present invention, since CO 2 in the gasifying agent reacts at a high conversion rate, it is presumed that the contribution of the reactions of the formulas (5) and (7) is large during these reactions.

C + CO 2 ? 2CO (5)

C + H 2 O? CO + H 2 (6)

CH 4 + CO 2 ? 2CO + 2H 2 (7)

CH 4 + H 2 O? CO + 3H 2 (8)

C 2 H 6 + H 2 ? 2CH 4 (9)

1, the carbonaceous fuel is supplied from the upper part of the gasification furnace 10, but the carbonaceous fuel may be supplied to the end of the gasification furnace 10, 16).

In addition, a carrier gas such as N 2 may be supplied to a pipe for supplying the carbonaceous fuel to the gasification furnace 10, and the carbonaceous fuel may be supplied to the gasification furnace 10 together with the carrier gas.

The product gas produced by the gasification of the carbonaceous fuel is withdrawn from the upper part of the gasification furnace 10, purified through a cyclone (not shown), a gas scrubber, an oil-water separator or the like, and then taken out from the system as a product gas.

The produced product gas is widely available as a fuel. In the method of operating a steelworks of the present invention, the generated gas thus produced is used as an energy source of a steel mill or a reducing material of iron oxide in steel mills.

Detailed description and preferable conditions of the method for gasifying carbonaceous fuel of the present invention, the method for operating a steel mill, and the method for producing a gasified gas will be described below.

In the present invention, the carbonaceous fuel is gasified using a fluidized bed gasifier. In addition, quicklime is used as a fluid medium.

As the quicklime (CaO), various known ones can be used. As an example, calcium oxide (CaCO 3 ) is calcined, and calcined calcium oxide (Ca (OH) 2 ) is calcined. Since the quicklime absorbs CO 2 in the atmosphere and returns to CaCO 3 or reacts with water vapor in the atmosphere to change into Ca (OH) 2 , it is preferable to store the quicklime in dry air or an inert gas such as N 2 .

The quicklime not only has sufficient heat resistance corresponding to the gasification of the carbonaceous fuel, but also acts as a catalyst for the gasification reaction of the carbonaceous fuel as described above. Therefore, according to the present invention, the produced gas (gasified gas) can be produced by gasifying the carbonaceous fuel with a high yield, and the produced gas produced at a high yield can be used as energy for the steel mill or as a reducing material for iron oxide have.

The mean particle diameter of the quicklime is not particularly limited and may be appropriately set according to the size of the gasification furnace 10, the assumed charging amount, the supply amount of the gasifying agent, and the like.

Here, in the present invention, quicklime is used as a fluid medium in the (fluidized bed) gasification furnace 10. [ Considering this point, the mean particle size of the quicklime is preferably about 30 to 300 mu m, more preferably about 50 to 200 mu m. By setting the average particle diameter of the quicklime to 30 to 300 占 퐉, it is possible to secure a good fluidity and to stably operate the gasification furnace 10. [

There is no limitation on the charged amount of burnt lime, and the amount of burnt lime can be adjusted depending on the size of the gasification furnace 10, the amount of the carbonaceous fuel supplied to the gasification furnace 10, the amount of the gasifying agent supplied to the gasification furnace 10, It is only necessary to appropriately set the supply amount that can be appropriately performed.

The gasifying agent used for the gasification of the carbonaceous fuel is one containing H 2 , CO 2 and H 2 O.

In the present invention, by using calcium oxide as a fluid medium in a fluidized bed gasification furnace and using a gasifying agent containing H 2 and CO 2 in addition to H 2 O, it is possible to gasify the carbonaceous fuel at a high yield .

As described above, Patent Document 4 discloses that, in the co-gasification of biomass and coal using a three-stream type circulating fluidized bed, as a fluidized medium (a heat transfer medium, a tar reforming catalyst, and an absorbent of CO 2 and H 2 S) (CaO) is used and high-temperature steam (H 2 O) is used as a gasifying agent.

However, when the gasifying agent contains only H 2 O and does not contain H 2 and CO 2 in the gasification of the carbonaceous fuel using the quicklime as the fluidizing medium, the above-mentioned formulas (5) and (7) The gasification reaction of the carbonaceous fuel due to the reaction shown in Fig. 4B does not proceed, so that the carbonaceous fuel can not be gasified at a high yield.

In contrast, in the present invention, in the gasification of the carbonaceous fuel, a gasifying agent containing H 2 and CO 2 is used in addition to H 2 O, in addition to using quicklime as a fluidized medium in a fluidized bed gasification furnace. As described above, the present invention can make a significant contribution to the reactions shown in the formulas (5) and (7) as described above, so that CO 2 can be reacted at a high conversion rate. As a result, The vaginal fuel can be gasified at a high yield.

As described above, in the present invention, the gasifying agent used for gasifying the carbonaceous fuel contains H 2 , CO 2 and H 2 O.

In a preferred embodiment, as a preferred embodiment, a shift-modified steel by-product gas obtained by adding excess steam to a steel by-product gas and performing shift modification is used as a gasifying agent containing H 2 , CO 2 and H 2 O.

As a gasifying agent, it is preferable to use a gasifying agent obtained by shift-modifying the iron-based by-product gas, because the gasifying agent becomes cheaper than the gasifying agent obtained by mixing the pure gas of H 2 and CO 2 with steam.

It is preferable that the steel by-product gas which is subjected to the shift-modification to be a gasifying agent has a CO concentration of 5 vol% or more and an N 2 concentration of 60 vol% or less.

By making the CO concentration of the steel by-product gas at 5 vol% or more, the concentration of H 2 and CO 2 in the gasifying agent obtained by the shift denaturation can be made sufficiently high, and the yield of the produced gas can be improved. In addition, by setting the N 2 concentration of the steel by-product gas to 60 vol% or less, it is possible to obtain sufficient heat of combustion of gaseous fuel and to improve the shift reaction speed.

Specific examples of the iron-making by-product gas include a blast furnace gas and a shaft furnace gas (a typical gas composition is CO: 10 to 30 vol%, CO 2 : 10 to 30 vol%, N 2 : 30 to 55 vol%, and H 2 : 0 to 10 vol%).

As the steel by-product gas, a steel by-product gas containing CO other than the blast furnace gas or the shaft-use gas may be used, but it is preferable to have the gas composition of the above-mentioned preferable range. Examples of such a steel by-product gas include exhaust gas generated from metallurgy such as exhaust gas and converter gas discharged from a combustion furnace in a steel mill, and the like. The above-mentioned steel by-product gas can be used singly or as a mixture of two or more kinds.

In the present invention, there is no limitation on the concentration of H 2 , CO 2 and H 2 O in the gasifying agent.

Here, the H 2 O concentration is preferably about 5 to 70 vol% from the viewpoint of ensuring the yield of the produced gas and suppressing the residual of CO 2 in the produced gas. From the viewpoint of ensuring the yield of the produced gas, it is preferable that the H 2 concentration and the CO 2 concentration in the gasifying agent are all 3 vol% or more. From the same viewpoint, the preferable composition of the gasifier is 20 to 70 vol% of H 2 O, 5 to 40 vol% of H 2 , and 5 to 40 vol% of CO 2 . The gasifying agent may contain other components (for example, N 2 or the like) in addition to these components.

Further, the gasifying agent used in the present invention is not limited to the above-mentioned shift-modified steel by-product gas obtained by adding excess steam to a steelmaking by-product gas and performing the shift-modification.

That is, in the present invention, for example, a gasifying agent prepared by mixing water vapor generated in a boiler or the like with CO 2 in which H 2 gas and liquefied gas are vaporized may be used. Alternatively, a gasifying agent containing H 2 , CO 2, and H 2 O, which is prepared by purifying and mixing gas produced as a by-product in a steel making process or the like, may be used.

The supply amount of the gasifying agent is not particularly limited and may be appropriately determined depending on the size of the gasification furnace 10, the amount of quicklime charged in the gasification furnace 10, the amount of the carbonaceous fuel to be supplied, .

Various known carbonaceous fuels such as waste materials such as coal, biomass, waste tires and waste plastics can be used as the carbonaceous fuel to be a gasification raw material.

Among them, the carbonaceous fuel is preferably at least one selected from peat, lignite, and bituminous coal. Pebbles, lignite and bituminous coal are preferably used because they are comparatively inexpensive, and also present in large quantities, together with carbonaceous fuel which is relatively easy to gasify.

In the present invention, the supply method of the carbonaceous fuel is not limited, and it may be a dry supply or a wet supply using a water slurry or the like.

The size of the carbonaceous fuel is not particularly limited, but may be a standard size as a solid raw material supplied to the fluidized bed. Specifically, the size of the carbonaceous fuel is preferably 1 to 50 mm, more preferably 3 to 30 mm. The granulation of the carbonaceous fuel may be carried out by a known method.

The supply amount of the carbonaceous fuel is not limited and the carbonaceous fuel can be appropriately gasified depending on the size of the gasification furnace 10, the amount of burnt lime charged in the gasification furnace 10, the amount of the gasifying agent that can be supplied, and the like It is only necessary to set the supply amount appropriately.

The gasification reaction temperature of the carbonaceous fuel is not limited, but the gasification reaction temperature is preferably 600 to 1500 占 폚, more preferably 800 to 1200 占 폚.

By setting the gasification reaction temperature at 600 占 폚 or higher, it is possible to improve the yield of the produced gas and prevent the by-product of the high-viscosity tar-like substance, thereby preventing occurrence of trouble such as clogging of the pipe. In addition, by making the gasification reaction temperature 1500 캜 or lower, it is possible to obtain a product gas having a high combustion heat. In addition, by setting the gasification reaction temperature to 1,500 占 폚 or less, the amount of the heat source to be fed into the gasification furnace 10 can be suppressed and the cost can be reduced.

There is no limitation on the heating method of the gasification furnace 10, and the heating of the gasification furnace in the gasification of the carbonaceous fuel, such as a method using an external heat type heater, a method in which a heating medium is supplied to a jacket covering the gasification furnace, And the like.

The method for operating a steel mill of the present invention is a method for gasifying a carbonaceous fuel according to the present invention. The gas produced by performing the same treatment as the gasification method of the present invention is used for operation of a steel mill. In a fluidized bed gasification furnace using calcium oxide as a fluidizing medium, And a gasifying agent containing H 2 , CO 2, and H 2 O to gasify the carbonaceous fuel. In the first aspect, the generated gas is used as at least a part of the energy source of the steelworks, , The generated gas is used as at least a part of the reducing material in the reduction of iron oxide in iron.

The produced gas according to the present invention has a wide range of applications as a fuel gas, but it is reasonable to use it as an energy source in a steel mill, since it is preferable to use a steelmaking by-product gas that is shift-modified as a gasifying agent as described above. Specific examples of the use of the produced gas according to the present invention include a fuel for a self-generating facility, a fuel gas for sintering iron ore, a fuel gas for a blast furnace, or a raw material for a mix gas produced by mixing various by- Gas and the like.

The produced gas according to the present invention is a gas containing CO, H 2 , and hydrocarbons having 1 to 4 carbon atoms. Therefore, this generated gas can also be used as a reducing material for iron oxide to be injected into a blast furnace or a shaft. Here, iron oxide includes not only iron ore but also dust and sludge containing iron oxide generated in a blast furnace, a converter and the like.

Although shown later in the examples, according to the present invention, a product gas can be obtained from the carbonaceous fuel at a high yield. Therefore, according to the method of operating the steelworks of the present invention, it is possible to reduce the cost of the energy used in the steelworks and the reduction cost of the oxidizing gas.

The method for producing a gasified gas of the present invention is a method for producing a gasified gas by performing the same treatment as the method for gasifying a carbonaceous fuel of the present invention, , A gasifying agent containing H 2 , CO 2 and H 2 O is fed to the gasification furnace to gasify the carbonaceous fuel.

As described above, according to the present invention, a product gas can be obtained from a carbonaceous fuel at a high yield. Therefore, according to the method for producing a gasified gas of the present invention, it is possible to manufacture a gasified gas at a high yield, thereby reducing the cost of producing the gasified gas.

Although the gasification method of the carbonaceous fuel of the present invention, the method of operating the steel mill, and the method of producing the gasified gas of the present invention have been described in detail above, the present invention is not limited to the above- It goes without saying that various modifications and changes may be made without departing from the scope of the invention.

Example

Hereinafter, a method for gasifying a carbonaceous fuel, a method for operating a steel mill, and a method for producing a gasified gas according to the present invention will be described in detail.

Needless to say, the present invention is not limited to the following embodiments.

[Example 1]

A micro fluidized bed gasification test apparatus (inner diameter 22 mm) was prepared, which was capable of supplying coal at 10 to 30 g / h (hour) by dry feed.

As a fluidized medium, a reagent CaO produced by Kojundo Chemical Laboratories was filled in the gasification tester at 75 mm as a layer height at the stop. In addition, H 2: 14 vol%, H 2 O: 35 vol%, CO 2: 24 vol%, N 2: to prepare a mixture gas containing 27 vol% a simulated shift-modified iron by-product gas, and the gas agent .

400 ml (liters) / min of the gasifying agent was supplied from the bottom of the fluidized bed to fluidize CaO.

The carbonaceous fuel was obtained by assembling lignite (55 wt% of volatile matter, 36 wt% of fixed carbon, 8 wt% of ash) with φ1 ~ 3 mm as water binder (water content after assembly: 14 wt%).

The inside temperature of the fluidized bed was raised to 1000 캜 by an external heating heater, and then the granulated coal was supplied at a feeding rate of 20 g / h to start the gasification reaction. The reaction time was 1 hour, and gas sampling was performed three times every 20 minutes to analyze the generated gas.

As a result of averaging the results of three times of gas analysis, the gas yield of relatively high combustion heat was obtained at a high yield of 61% for the produced gas based on carbon and 2.6 Mcal / Nm 3 for the generated gas. Considering these results and the results of Comparative Example 1 to be described later, it is considered that the quicklime functions as a good catalyst in the gasification reaction of the carbonaceous fuel. In addition, 67 vol% of CO 2 supplied as a gasifier was consumed by a reaction such as equation (5).

As a gas component in the produced gas, CO, H 2 , and hydrocarbons having 1 to 4 carbon atoms (mixture of paraffin and olefin) were contained in a total of 80 vol%. In addition, N 2 and CO 2 were contained as fire-retardant components. This produced gas has a total of 80% by volume of CO, H 2 , and hydrocarbon concentrations of 1 to 4 carbon atoms, and therefore it is clear that there is no problem as an energy source for ironworks or a reducing material for iron oxide.

The yield of the produced gas based on carbon was obtained as follows.

In the present invention, the carbon source to be supplied to the gasification furnace (gasification test apparatus) is a carbonaceous fuel (lignite) and a gasifying agent (a simulated shift-modified ironmaking by-product gas).

When the supplied amount of the carbonaceous fuel to be supplied to the gasification furnace is A kg / h and the carbon concentration of the carbonaceous fuel is x wt%, the supply amount of the carbon gasification furnace to the gasification furnace β [kmol / h] . In the following formula, " 12 " is the atomic weight of carbon.

? [kmol / h] = (A / 12) x (x / 100)

When the supply amount of the gasifying agent to be supplied to the gasification furnace is B Nm 3 / h and the CO 2 concentration of the gasifying agent is y vol%, the supply amount γ [kmol / h] of the carbon gasification furnace by the gasifying agent, Can be calculated by the following formula. In the following formula, " 22.4 " is the volume (l) of 1 mol of gas.

? [kmol / h] = (B / 22.4) (y / 100)

That is,? +? [Kmol / h] is the amount of carbon supplied to the gasification furnace.

On the other hand, the amount of the generated gas generated in the gasification furnace is C Nm 3 / h.

As described above, as the carbon compound, CO, CO 2 , a hydrocarbon (C 1 ) having a carbon number of 1, a hydrocarbon (C 2 ) having a carbon number of 2 , a hydrocarbon (C 3 ) having a carbon number of 3 , and a hydrocarbon C 4 ). Here, the content of CO in the product gas is Z 1 vol%, the content of copper CO 2 is Z 2 vol%, the content of copper C 1 is Z 3 vol%, the content of copper C 2 is Z 4 vol% When the content of C 3 is Z 5 vol% and the content of the copper C 4 is Z 6 vol%, the amount [kmol / h] of carbon in the produced gas is expressed by the following formula. In the following formula, " 22.4 " is the volume (l) of 1 mol of gas.

α [kmol / h] = { C × [(Z 1 + Z 2 + Z 3 + 2Z 4 + 3Z 5 + 4Z 6) / 100]} / 22.4

Here, in the present invention, the generated gas generated in the gasification furnace also contains carbon derived from the gasifying agent. Accordingly, the amount of carbon supplied to the gasification furnace of carbon by the gasifying agent is subtracted from the amount of carbon in the produced gas, and the yield [%] of the produced gas based on carbon is calculated by the following equation.

Production gas yield [%] = [(? -?) / (? +?)] / 100

[Example 2]

The gasification test was carried out in the same manner as in Example 1, except that the carbonaceous fuel was changed to bituminous coal having a volatile content of 40 wt%, fixed carbon 52 wt%, ash 9 wt%, and a water content of 3 wt% after the assembly.

As a result, the yield of produced gas based on carbon was 32%, and the heat of combustion of the produced gas was 2.5 Mcal / Nm 3 . Gas yield was lower than that of lignite, but considering the fact that 52 wt% of fixed carbon was contained, gas of high combustion heat was obtained at a comparatively high yield. Considering these results and the results of Comparative Example 2 to be described later, it is considered that the quicklime acts as a good catalyst in the gasification reaction of the carbonaceous fuel as in the first embodiment. In addition, 49 vol% of CO 2 supplied as a gasifying agent was consumed by a reaction such as the equation (5).

As a gas component in the produced gas, a total of 73 vol% of CO, H 2 , and hydrocarbons having 1 to 4 carbon atoms (mixture of paraffin and olefin) were contained. In addition, N 2 and CO 2 were contained as fire-retardant components. This produced gas had a total of 73% by volume of CO, H 2 , and hydrocarbon concentrations of 1 to 4 carbon atoms. Therefore, it is clear that there is no problem as a source of iron oxide or a reducing material of iron oxide.

[Comparative Example 1]

A gasification test was carried out in the same manner as in Example 1 except that the flow medium was made of industrial silica sand (SiO 2 ).

As a result, the yield of produced gas based on carbon was 36% and the heat of combustion of the generated gas was 2.7 Mcal / Nm 3 . SiO 2 is considered to be completely inert as a catalyst for the gasification reaction, so that the gas yield is very low as compared with Example 1 in which the quicklime is used as a fluid medium. In addition, the heat of combustion of the generated gas was about the same as that in Example 1.

[Comparative Example 2]

A gasification test was carried out in the same manner as in Example 2 except that the flow medium was an industrial silica sand (SiO 2 ).

As a result, the yield of produced gas based on carbon was 10%, and the heat of combustion of the produced gas was 2.4 Mcal / Nm 3 . As in Comparative Example 1, in this example in which SiO 2 having no catalytic activity was used as a fluid medium, the gas yield was much lower than in Example 2. In addition, the heat of combustion of the generated gas was about the same as in Example 2.

Industrial availability

It can be suitably used for generation of fuel gas used in the steel industry or power generation industry and reduction of iron oxide in steelworks.

10: Gasification furnace
12: gas distribution plate
14: Shift transformer
16: Fluidized bed

Claims (10)

Characterized in that in the gasification of the carbonaceous fuel in the fluidized bed gasification furnace, the gasifying agent containing H 2 , CO 2 and H 2 O is supplied to the fluidized bed gasification furnace by using quicklime as the fluidizing medium Gasification method. The method according to claim 1,
Wherein the gasifying agent is obtained by adding excess steam to a steel by-product gas and then performing shift-denaturing. 3. The method of claim 2,
Wherein the steel by-product gas has a CO concentration of 5 vol% or more and an N 2 concentration of 60 vol% or less. 4. The method according to any one of claims 1 to 3,
Wherein the carbonaceous fuel is at least one selected from peat, lignite and sub-bituminous coal. The carbonaceous fuel is gasified by supplying a carbonaceous fuel and a gasifying agent containing H 2 , CO 2 and H 2 O to a fluidized bed gasification furnace using calcium oxide as a fluidizing medium to convert the generated gas into energy A method of operating a steelworks used as at least a part of a circle. The carbonaceous fuel is gasified by supplying a carbonaceous fuel and a gasifying agent containing H 2 , CO 2 and H 2 O to a fluidized bed gasification furnace using calcium lime as a fluidizing medium, A method of operating a steelworks used as at least a part of ash. The method according to claim 5 or 6,
Wherein the gasifying agent is obtained by adding excessive steam to a steel by-product gas and then performing a shift denaturing process. 8. The method according to any one of claims 5 to 7,
Wherein the generated gas is a mixed gas containing CO, H 2, and hydrocarbons having 1 to 4 carbon atoms. Characterized in that the carbonaceous fuel is gasified by supplying a carbonaceous fuel and a gasifying agent containing H 2 , CO 2 and H 2 O to a fluidized bed gasification furnace using calcium oxide as a fluidizing medium Way. 10. The method of claim 9,
Wherein the gasifying agent is obtained by adding excess steam to a steel by-product gas and then subjecting it to shift-denaturing.
KR1020187012291A 2015-11-17 2016-10-18 Gasification method of carbonaceous fuel, operating method of steel mill and method of producing gasified gas KR20180061323A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2015224917A JP6406222B2 (en) 2015-11-17 2015-11-17 Method for gasifying carbonaceous fuel, method for operating steelworks and method for producing gasified gas
JPJP-P-2015-224917 2015-11-17
PCT/JP2016/080783 WO2017086070A1 (en) 2015-11-17 2016-10-18 Method for gasifying carbonaceous fuel, method for operating iron mill, and method for producing gasified gas

Publications (1)

Publication Number Publication Date
KR20180061323A true KR20180061323A (en) 2018-06-07

Family

ID=58718698

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020187012291A KR20180061323A (en) 2015-11-17 2016-10-18 Gasification method of carbonaceous fuel, operating method of steel mill and method of producing gasified gas

Country Status (6)

Country Link
EP (1) EP3378921A4 (en)
JP (1) JP6406222B2 (en)
KR (1) KR20180061323A (en)
CN (1) CN108350370A (en)
AU (1) AU2016357856A1 (en)
WO (1) WO2017086070A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6955895B2 (en) 2017-04-27 2021-10-27 オークマ株式会社 Chip processing equipment
JP7251978B2 (en) * 2018-12-28 2023-04-04 川崎重工業株式会社 Fluidized bed furnace
CN110437884B (en) * 2019-09-10 2020-09-01 吉林大学 Method for hydrogen production and power generation through biomass charcoal catalysis
CN112480969B (en) * 2020-11-12 2022-06-10 新奥科技发展有限公司 Fluidized bed gasification furnace and gasification process
CN114806644A (en) * 2022-06-06 2022-07-29 北京清创晋华科技有限公司 Pyrolysis gasifier

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000355693A (en) 1999-06-14 2000-12-26 Ishikawajima Harima Heavy Ind Co Ltd Coal gasification equipment
JP2007009069A (en) 2005-06-30 2007-01-18 Hitachi Ltd Method and system for reforming byproduct gas in steelmaking plant
JP2014074144A (en) 2012-10-05 2014-04-24 Japan Coal Energy Center (Jcoal) Co-gasification method of coal and biomass by three bed type circulation layer and its device
JP2015086232A (en) 2013-10-28 2015-05-07 国立大学法人 新潟大学 Coal-coke gasification apparatus and method by using internally circulating fluidized layer

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB673170A (en) * 1950-01-05 1952-06-04 Consolidation Coal Co Improvements in or relating to the process of making gas from carbonaceous solid fuels
EP0776962B1 (en) * 1995-11-28 2002-10-02 Ebara Corporation Method and apparatus for treating wastes by gasification
JP2004149556A (en) * 2002-10-28 2004-05-27 Nishinippon Environmental Energy Co Inc Method for gasifying biomass and gasifying apparatus therefor
BRPI1007232A2 (en) * 2009-01-21 2016-02-16 Rentech Inc "Systems for the production of high quality synthesis gas, and for continuous dry reforming, and methods for producing synthase gas, for deep desulfurization of synthesis gas, and for continuous dry reforming"
CN103154201B (en) * 2010-08-31 2014-11-05 杰富意钢铁株式会社 Method for decomposing organic substance into lower molecules, and method for utilizing exhaust gas generated by metallurgical furnace
EP2771435A4 (en) * 2011-10-26 2015-11-11 Res Usa Llc Gasifier fluidization
CN102676232A (en) * 2012-05-17 2012-09-19 山东万丰煤化工设备制造有限公司 Method for preparing pulverized coal into hydrogen gas
JP6227293B2 (en) * 2012-07-18 2017-11-08 Ｊｆｅスチール株式会社 Method for reducing the molecular weight of organic substances
EP2928590B1 (en) * 2012-12-10 2021-01-20 Southern Company Second stage gasifier in staged gasification
JP5999114B2 (en) * 2014-01-14 2016-09-28 Ｊｆｅスチール株式会社 Method and system for reducing the molecular weight of organic substances
JP6070580B2 (en) * 2014-01-14 2017-02-01 Ｊｆｅスチール株式会社 Method and system for reducing the molecular weight of organic substances

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000355693A (en) 1999-06-14 2000-12-26 Ishikawajima Harima Heavy Ind Co Ltd Coal gasification equipment
JP2007009069A (en) 2005-06-30 2007-01-18 Hitachi Ltd Method and system for reforming byproduct gas in steelmaking plant
JP2014074144A (en) 2012-10-05 2014-04-24 Japan Coal Energy Center (Jcoal) Co-gasification method of coal and biomass by three bed type circulation layer and its device
JP2015086232A (en) 2013-10-28 2015-05-07 国立大学法人 新潟大学 Coal-coke gasification apparatus and method by using internally circulating fluidized layer

Also Published As

Publication number Publication date
JP2017088831A (en) 2017-05-25
EP3378921A1 (en) 2018-09-26
AU2016357856A1 (en) 2018-05-17
CN108350370A (en) 2018-07-31
WO2017086070A1 (en) 2017-05-26
JP6406222B2 (en) 2018-10-17
EP3378921A4 (en) 2019-01-09

Similar Documents

Publication Publication Date Title
KR20180061323A (en) Gasification method of carbonaceous fuel, operating method of steel mill and method of producing gasified gas
EP2430127B1 (en) Two stage dry feed gasification system and process
US3861885A (en) Carbon black fuel production
JP6226423B2 (en) Production of synthesis gas from oxidized biomass by heating with hot gas obtained by oxidation of residual product
US20050042166A1 (en) Method for the production of hydrogen-containing gaseous mixtures
KR880000353B1 (en) Method and apparatus for gasifying carbonaceous material
WO2017061482A1 (en) Carbonaceous fuel gasification method, steel mill operation method, and gasified gas production method
JPS60500674A (en) Methods for desulfurizing, denitrifying and oxidizing carbonaceous fuels
JP2018538502A (en) Industrial furnace integrated with biomass gasification system
CN105176594A (en) Device and method for producing reducing gas by lignite gasification
CA1309589C (en) Method of producing a clean gas containing carbon monoxide and hydrogen
EP0196359B1 (en) Method and apparatus for fluidized bed reduction of iron ore
JP2014074144A (en) Co-gasification method of coal and biomass by three bed type circulation layer and its device
PL166128B1 (en) Method of processing a material containing carbon into a finely grained carbon and methyl alcohol
CN205035331U (en) A device that is used for brown coal gasification system reducing gas
CN102361961A (en) Coal gasification with additional production of useful materials
US2654661A (en) Gasification of carbonaceous solid fuels
Speight Types of gasifier for synthetic liquid fuel production: design and technology
JPH07228910A (en) Method and equipment for manufacturing iron
JPS5993795A (en) Synthetic gas manufacture and equipment
JPS649376B2 (en)
Lahijani et al. Air gasification of palm empty fruit bunch in a fluidized bed gasifier using various bed materials
CN103484180A (en) Technology for preparing natural gas through self-heating catalytic gasification of fire coal, and system thereof
JP2018053053A (en) Gasification method of carbonaceous fuel, operation method of iron mill and manufacturing method of gasification gas
JPS6260438B2 (en)

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application