Abstract: A coal deactivation processing device includes: a rotary kiln body provided rotatably into which coal and a processing gas are supplied; and a feed pipe provided so as to be able to rotate along with the rotary kiln body, extending along a lengthwise direction of the rotary kiln body, and having a coolant flowing therein. A pair of blades is provided on an outer circumferential section of the feed pipe and protrudes in a radial direction. The feed pipe and the pair of blades are arranged so as to pass through an accumulated coal layer of the coal within the rotary kiln body upon rotation of the rotary kiln body, and such that an angle formed by a tangent of a path along which the central axis of the feed pipe passes and the bisector of the pair of blades is from 0 to 40 degrees.

Abstract: An inactivation treatment apparatus includes a rotary kiln main body in which coal flows from an end side toward a tip side; a cooling tube arranged rotatably in conjunction with the rotary kiln main body and extends in the direction of the length of the rotary kiln main body, and in which cooling water can flow; and a treatment gas supply tube arranged rotatably in conjunction with the rotary kiln main body, and extends in the direction of the length of the rotary kiln main body, and can supply a treatment gas into the rotary kiln main body. In the apparatus, each of the cooling tube and the treatment gas supply tube is arranged to move past through a coal layer, which is a layer formed as the result of the sedimentation of the coal, in the rotary kiln main body when the rotary kiln main body rotates.

Abstract: The present invention is provided with: a first processing device main body (111) that processes carbonized coal (1) by means of processing gas (103) of which the oxygen concentration has been adjusted by blowers (113,115); a second processing device main body (121) that processes primary processed carbonized coal (2a), which results from being processed at the first processing device main body, by means of air (102) fed by a blower (122); a second-processing-gas state detection means that detects the state of the air used within the second processing device main body; and a control device (130) that, on the basis of information from the second-processing—gas state detection means, controls the blowers (113,115) in a manner so as to adjust the oxygen concentration in the processing gas when the state of the air has diverged from a predetermined state.

Abstract: A method for producing blast-furnace blowing coal to be blown through a tuyere into the interior of the blast-furnace body of a blast furnace, wherein: the composition and melting point of the ash from the coal are analyzed in advance; the composition of the blast-furnace slag is analyzed in advance; the blast-furnace slag contains more calcium oxide than the coal ash does; and the coal and the blast-furnace slag are mixed, on the basis of the composition and melting point of the coal ash and the composition of the blast-furnace slag, and in a manner such that the amount of calcium oxide contained in a quaternary system phase diagram including silicon dioxide, magnesium oxide, aluminum oxide and calcium oxide, which are the principal components of the coal ash and the blast-furnace slag, causes the melting point of the ash to be 1400° C. or higher.

Abstract: On the basis of data obtained by means of analyzing coal, a first and second coal type satisfying conditions are selected, the ash melting point of the mixed coal resulting from mixing the first and second coal types is derived on the basis of a four-dimensional state diagram for SiO2—CaO—MgO-20% Al2O3, on the basis of the ash melting point of the mixed coal and the four-dimensional state diagram, an additive causing the ash melting point of the mixed coal to be at least 1400° C. at the lowest quantity when added to the mixed coal is selected from SiO2, MgO, and CaO, the addition quantity of the additive is derived, the first coal type and second coal type are mixed to result in the mixed coal, and the addition quantity of the additive is added to the mixed coal.

Abstract: A coal deactivation treatment device for deactivating of coal by means of a treatment gas that is a mixture of air and nitrogen gas is provided with, among other things: a treatment column inside of which coal flows from the top to the bottom; treatment gas feed means, and the like, for feeding treatment gas to the inside of the treatment column; humidifying heaters for heating and humidifying the treatment gas such that the treatment gas fed to the inside of the treatment column can maintain a relative humidity of 35% or greater, even at 95° C.; a temperature sensor and a control device for adjusting the temperature inside the treatment column such that the inside of the treatment column is maintained at a relative humidity of 35% or greater and a temperature of 95° C. or lower.

Abstract: Provided is a method for preparing blast furnace blow-in coal that can, at a low cost, obtain blast furnace blow-in coal that suppresses occlusion by blast furnace blow-in ash or accretion of blast furnace blow-in ash in a pathway leading to a tuyere of a blast furnace main body, while suppressing a decrease in the amount of heat release. The method includes selecting first and second coal types satisfying conditions (S2, S3), on the basis of the CaO content in the ash when the oxides of Al, Si, Ca, and Mg in the ash is 100 wt % and the Al2O3 content in the ash is 20 wt %, deriving the mixing ratio of the first and second coal types that results in the CaO content in the ash of the mixed coal being at least 40 wt % (S4), and mixing the first and second coal types (S5) at the mixing ratio.

Abstract: A method for preparing coal which is to be injected into a blast furnace includes: a step (S1) for analyzing the ash of coal in a raw-coal stage and determining the contents (wt %) of At Si, Ca and Mg in the ash; a step (S2) for deriving the ash melting point of the coal on the basis of the obtained data: a step (S3) for selecting a metal species to be supported on the coal and deriving the amount thereof to be supported on the basis of the obtained data so as to adjust the melting point of the ash of the coal to 1200 to 1400° C.; a step (S4) for making the metal supported on the coal in the derived amount by an ion-exchange method; and a step (S5) for carbonizing the coal obtained in the step (4).

Abstract: A blast furnace includes: a blast furnace body; raw material charging means for charging raw material into the blast furnace body; hot air blowing means for blowing hot air into the blast furnace body; a drying apparatus etc. for evaporating moisture in low-grade coal; a dry distillation apparatus etc. for carbonizing dried coal; a cooling apparatus etc. for cooling carbonized coal; a pulverization apparatus etc. for pulverizing the carbonized coal cooled by the cooling apparatus; a storage tank for storing powdered coal; a nitrogen gas supply source, a conveyor line and a cyclone separator etc. for conveying the powdered coal pulverized by the pulverization apparatus to the inside of the storage tank by generating a gas flow with the nitrogen gas; and an injection lance etc. for feeding the powdered coal inside the storage tank to hot air that is blown into the blast furnace body.

Abstract: Provided is a coal deactivation processing device that can suppress an increase in carbon monoxide concentration in processing gas regardless of the fact that used processing gas is circulated and refused. The present invention is provided with: a device main body (141) that causes coal therewithin to flow from one side to another; a processing gas feed means (142-144, 144a, 145, 145a, 146, 146a, 147, 148) that feeds processing gas to the interior of the device main body (141); a processing gas circulation means (148) that circulates used processing gas (33) used in the device main body (141) to the processing gas feed means; and a carbon monoxide processing device (170) that adjusts the carbon monoxide concentration in the processing gas in a manner so as to reduce the carbon monoxide concentration in the processing gas.

Abstract: An inactivation treatment apparatus includes a rotary kiln main body in which coal flows from an end side toward a tip side; a cooling tube arranged rotatably in conjunction with the rotary kiln main body and extends in the direction of the length of the rotary kiln main body, and in which cooling water can flow; and a treatment gas supply tube arranged rotatably in conjunction with the rotary kiln main body, and extends in the direction of the length of the rotary kiln main body, and can supply a treatment gas into the rotary kiln main body. In the apparatus, each of the cooling tube and the treatment gas supply tube is arranged to move past through a coal layer, which is a layer formed as the result of the sedimentation of the coal, in the rotary kiln main body when the rotary kiln main body rotates.

Abstract: A coal deactivation processing device includes: a rotary kiln body provided rotatably into which coal and a processing gas are supplied; and a feed pipe provided so as to be able to rotate along with the rotary kiln body, extending along a lengthwise direction of the rotary kiln body, and having a coolant flowing therein. A pair of blades is provided on an outer circumferential section of the feed pipe and protrudes in a radial direction. The feed pipe and the pair of blades are arranged so as to pass through an accumulated coal layer of the coal within the rotary kiln body upon rotation of the rotary kiln body, and such that an angle formed by a tangent of a path along which the central axis of the feed pipe passes and the bisector of the pair of blades is from 0 to 40 degrees.

Abstract: The present invention makes it possible to prevent the spontaneous combustion of coal while causing oxygen to be adsorbed to the surface of the coal in an efficient manner. A coal deactivation processing device includes: a rotary kiln body provided rotatably into which coal and a processing gas are supplied; a feed pipe provided so as to be able to rotate along with the rotary kiln body), extending along a lengthwise direction of the rotary kiln body (103), and having a coolant flowing therein, and a protruding portion provided to the outer circumferential section of the feed pipe so as to protrude toward the rotation direction of the feed pipe. The feed pipe and the protruding portion are arranged so as to pass through a coal layer resulting from the accumulation of coal within the rotary kiln body when the rotary kiln body rotates.

Abstract: To provide a coal for a boiler fuel (10) used as a fuel for a coal-fired boiler, the coal for a boiler fuel comprising a reformed coal (10) comprising a raw coal (2) and calcium ion-exchanged on a raw coal (2). The raw coal (2) comprises a lignite or a subbituminous coal, and the amount of calcium is an equimolar amount relative to the molar amount of sulfur contained in the raw coal (2).

Abstract: A method for deactivating coal, in which coal is deactivated with a treatment gas containing oxygen, wherein a deactivation step for deactivating the coal in a temperature range 45-70° C. is carried out.

Abstract: The coal deactivation apparatus including: a separating device that separates out a portion of the beneficiated coal deactivated in the main treatment apparatus; a main evaluation apparatus into which the sample of the beneficiated coal separated out by the separating apparatus is supplied; a blower and heater that supply air at the evaluation temperature to the main evaluation apparatus; a temperature sensor that detects the temperature of the air that has heat-treated the sample in the main evaluation apparatus; and a control unit that, when the temperature of the air is at or below the lower limit on the basis of information from the temperature sensor, determines whether or not the temperature of the process gas is at or below the lower limit and if the process gas temperature exceeds the lower limit, controls the heater to reduce the temperature of the process gas by a prescribed value.

Abstract: The present invention is provided with: a supply feeder that supplies the low-grade charcoal; heating means that heat the low-grade charcoal; a shooter that sends out carbonization gas and generated carbonized charcoal; a reference gas supply source that adds a reference gas to the carbonization gas; a gas concentration measurement device that measures the concentration (Cs) of the reference gas and the concentration (Cc) of carbon dioxide in the mixed gas of the reference gas and the carbonization gas from the shooter; and a computation control device that, on the basis of the concentrations (Cc) and (Cs), the supply flow rate of the reference gas, and the supply weight of the low-grade charcoal, calculates the amount of carbon dioxide generated, determines the carbonization fraction of the low-grade charcoal, and controls a heating means in a manner so as to result in a target carbonization fraction.

Abstract: The present invention is provided with: a reference gas supply source that adds a reference gas that is a noble gas to a carbonization gas; a combustor that combusts the mixed gas of the carbonization gas and the reference gas and sends out an inspection gas; a gas rheometer that measures a flow rate of the inspection gas; a gas concentration measurement device; and a computation control device that determines the flow rate of the reference gas (noble gas) in the mixed gas from the concentration of reference gas, determines the amount of carbon component generated in the carbonization gas, determines the carbonization fraction of carbonized charcoal from the concentration of the carbon component in low-grade charcoal, the amount of carbon component generated, and the weight of supplied low-grade charcoal, and controls a valve in a manner so that a target carbonization fraction results.

Abstract: The present invention is provided with: a reference gas supply source that adds a reference gas of nitrogen gas to a carbonization gas; a combustor that combusts a mixed gas of the carbonization gas and the reference gas, and sends out an inspection gas; a gas rheometer; a gas concentration measurement device that measures the concentration of the nitrogen gas and the concentration of carbon dioxide in the inspection gas; and a computation control device that determines the flow rate of the nitrogen gas in the mixed gas, determines the amount generated of carbon components in the carbonization gas, determines the carbonization fraction of carbonized charcoal from the concentration of carbon components in low-grade charcoal, the amount generated, and the supply weight of the low-grade charcoal, and controls a valve in a manner so as to result in a target carbonization fraction.

Abstract: A biomass hydrothermal decomposition apparatus includes, a biomass feeder (31) that feeds biomass material (11) under normal pressure to under increased pressure, a hydrothermal decomposition device (41A) that allows the fed biomass material (11) to be gradually moved inside a gradient device main body (42) from a lower end thereof with a conveyor screw (43), and also allows hot compressed water (15) to be fed from an other end of a feed section (31) for the biomass material into the main body (42), so as to cause the biomass material (11) and the hot compressed water (15) to countercurrently contact with each other and undergo hydrothermal decomposition, and that transfers a lignin component and a hemicellulose component into the hot compressed water, so as to separate the lignin component and the hemicellulose component from the biomass material (11); and a biomass discharger (51) that discharges, from the upper end of the device main body (42), a biomass solid residue (17) under increased pressure to an un