CN105659044A - Apparatus for drying coal using reheat steam - Google Patents

Apparatus for drying coal using reheat steam Download PDF

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Publication number
CN105659044A
CN105659044A CN201480057843.3A CN201480057843A CN105659044A CN 105659044 A CN105659044 A CN 105659044A CN 201480057843 A CN201480057843 A CN 201480057843A CN 105659044 A CN105659044 A CN 105659044A
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China
Prior art keywords
coal
chain
sprocket wheel
take
mentioned
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CN201480057843.3A
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Chinese (zh)
Inventor
金成坤
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Hankook Technology Inc
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Hankook Technology Inc
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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
    • C10L9/08—Treating solid fuels to improve their combustion by heat treatments, e.g. calcining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
    • C—CHEMISTRY; METALLURGY
    • 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
    • C10L5/26—After-treatment of the shaped fuels, e.g. briquettes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/14—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks or receptacles, which may be connected to endless chains or belts
    • F26B15/146—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks or receptacles, which may be connected to endless chains or belts applying multiple superimposed tray conveyors, the materials to be dried being dropped onto subsequent conveyor stretches, e.g. by allowing the trays to tilt at one point
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
    • F26B17/04—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being all horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • 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
    • C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
    • 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
    • C10L2270/00—Specifically adapted fuels
    • C10L2270/04—Specifically adapted fuels for turbines, planes, power generation
    • 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
    • C10L2290/06—Heat exchange, direct or indirect
    • 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
    • C10L2290/10—Recycling of a stream within the process or apparatus to reuse elsewhere therein
    • 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
    • C10L2290/148—Injection, e.g. in a reactor or a fuel stream during fuel production of steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Microbiology (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The present comprises: a first coal dryer; a second coal dryer; and a third dryer, by removing moisture remaining inside and outside of coal, which is used for fueling thermal power plants, in the multiple coal dryers using reheat steam at a high temperature, incomplete combustion of coal can be prevented, thereby enhancing heat capacity of the coal, minimizing release of pollutants, preventing corrosion and enhancing the durability of a system, reducing the rate of spontaneous combustion due to reduced moisture, improving crushing efficiency of a coal pulverizer and heat distribution of a power boiler when coal is combusted, resolving the issue of clogging of a moving pathway when coal is transported, and improving coal supply stability by increasing utilization of low-quality coal for which demand is low. Furthermore, the following advantages can be provided: use of low heat capacity coal which is more affordable than high heat capacity coal; savings in fuel cost and manufacturing cost by reduced coal importation; reduction of waste, pollutants, and carbon dioxide generated from exhaust gas by relative reduction of coal consumption, and the advantages of replacement of foreign technology and exportation of equipment to foreign markets could be anticipated.

Description

Utilize the coal drying device of reheated steam
Technical field
The present invention relates to the device utilizing reheated steam to carry out dry coal, more in detail, it relates to injection reheated steam removes the coal drying device with multilevel drying machine of the moisture that the coal of the fuel being used as fuel-burning power plant comprises.
Background technology
Generally, in the fuel-burning power plant using coal to carry out as fuel generating electricity, the TV university of every 500MW about needs to burn the coal of 180ton/hr, and every platform coal pulverizer supplies about 37 tons of coals to boiler. Using the fuel-burning power plant of the 500MW of coal to be approximately provided with the coal saving storehouse of 6 about 500 tons of capacity, wherein, five carry out normal coal supply, and all the other one is used as storing the storage coal yard of the coal that can use certain time.
And, carrying out the fuel-burning power plant that generates electricity as fuel to the standard firepower standard of coal using coal is 6080Kcal/Kg, and is designed to be used in the low moisture pitch coal of less than 10%. Several fuel-burning power plant use the coal of import, and wherein, the average moisture content of part sub-bituminous coal is more than 17%, therefore, reduces the efficiency of combustion of boiler. It is 5400Kcal/Kg at standard firepower knock limit, and when the thermal value of the coal used is low, it is contemplated that cause generated energy to reduce and fuel consumption increases because of the low of efficiency of combustion. And, when being used as the sub-bituminous coal of low-heat carbon of high-moisture, cause the mobile system for carrying coal because moisture content is greater than standard and have some setbacks, and when utilizing coal pulverizer to be pulverized by coal, efficiency can be reduced, reduce the efficiency of combustion caused by part incomplete combustion, the skew that the heat distribution because producing in boiler also can occur and situation about running with abnomal condition. But, at present in order to cause the use proportion of sub-bituminous coal to be increased to about 41%��60% gradually in fuel-burning power plant fuel economy expense.
Further, along with safety problems such as the destructions of Nuclear power plants facing the expectation to world economy recovery and cause by Japan's violent earthquake, the expectation in fuel-burning power plant is more and more higher, therefore, to the demand of coal and price by lasting rising.The center of coal market, the world transfers supplier to by demander gradually, is thus difficult to supply coal stablely, and, the turnout of high hot carbon will maintain current level, thus estimate to form the unbalanced of coal supply and demand.
In the total reserve of coal in the world, the reserve of low-heat carbon is about 47%, although its reserve is big, but because generated energy is low, moisture content height and when burning, there is burning obstacle etc., therefore, high-moisture low-heat carbon is not favored by market because being difficult to carry out burning completely. In worldwide, up to the present, although the tendency depending on the stable price of oil and the low production cost of nuclear energy power generation is higher, but nearest sharply rising and the thermal power generation of extensive Program Construction use coal to uneasy grade of nuclear energy power generation along with oil price.
The technology (heated drying) being in the past dried by coal mainly uses Rotary drying mode, pneumatic (Flash, Pneumatic) drying mode and fluidized-bed (Fluid-Bed) drying mode, above-mentioned Rotary drying mode be while make input have coal cylinder shell (Shell) rotate, while making the mode that inner coal particle drying is the gas of high temperature, above-mentioned pneumatic (Flash, Pneumatic) drying mode is for supplying coal from top to bottom, and the dry gas making high temperature rises from bottom to top, and the mode being dried, above-mentioned fluidized-bed (Fluid-Bed) drying mode is make the dry gas of high temperature increase upward with trickle particle, and the mode that coal is dried.
Coal be divided into the surface-moisture of the hole being attached between coal particle and combine with the pore of the inside of coal in conjunction with moisture. The moisture sprayed when major part in surface-moisture is and carries out cleaning process and conveying and storage process in mountain area, and determine rise surface moisture along with surface-area and absorptivity, particle is more little, surface-area becomes more big, and form the kapillary between particle and particle to comprise moisture, thus moisture content is made to become big. In conjunction with the material that moisture is formed as the generation at coal, by brown coal, there is the order change of cigarette charcoal (pitch coal, sub-bituminous coal), smokeless carbon few. If the moisture in coal is many, then thermal value is low, and trucking costs also can increase, therefore, it is necessary to remove moisture in the processes such as the mixing of coal, pulverizer separation.
And, as relevant prior art, comprise the drying installation of No. 10-0680905th, Korean granted patent publication (on February 8th, 2007 is open) and the coal drying device utilizing superheated vapour of No. 10-1216827th, Korean granted patent publication (on December 28th, 2012 is open).
Summary of the invention
(1) technical problem solved
It is an object of the invention to, reheated steam is utilized to be dried by the coal of the fuel being used as fuel-burning power plant such that it is able to maintain the suitable moisture content of coal, it is to increase the thermal value of coal, thus improve the efficiency of combustion of heat power plant boiler, and can fuel economy usage quantity.
Further, another object of the present invention is to, it is provided that can by regulating the moisture contained by coal prevent the dry technology of the environmental problem caused by the incomplete combustion of coal and the technology in fuel-burning power plant can be applicable to.
(2) technical scheme
It is a feature of the present invention that, the coal drying device utilizing reheated steam is provided in order to realize above-mentioned purpose, comprise: the first coal drying machine, one pair first drives sprocket wheel and to be separated with predetermined distance by first driven sprocket wheel, and be fastened by multiple first chain respectively, between multiple first chain, hinge is combined with multiple first take-off plate, the lower section of upside the 2nd chain being connected between the first driving sprocket wheel and the first driven sprocket wheel is provided with a couple first guide rail for the first take-off plate carries out horizontal support, a couple the 2nd guide rail for the first take-off plate being carried out horizontal support it is provided with in the lower section of downside first chain being connected between the first driving sprocket wheel and the first driven sprocket wheel, the first sweating room for spraying the reheated steam from reheater supply it is provided with in the lower section of above-mentioned upside first chain, the 2nd sweating room for spraying the reheated steam from reheater supply it is provided with in the lower section of above-mentioned downside first chain, the first exhaust air chamber for trapping waste gas it is provided with above the chain of above-mentioned upside first, the 2nd exhaust air chamber for trapping waste gas it is provided with above the chain of above-mentioned downside first, 2nd coal drying machine, one pair the 2nd drives sprocket wheel and to be separated with predetermined distance by the 2nd driven sprocket wheel, and be connected by the 2nd chain respectively, between multiple 2nd chain, hinge is combined with multiple 2nd take-off plate, the lower section of upside the 2nd chain being connected between the 2nd driving sprocket wheel and the 2nd driven sprocket wheel is provided with a couple the 3rd guide rail for the 2nd take-off plate carries out horizontal support, the lower section of downside the 2nd chain being connected between the 2nd driving sprocket wheel and the 2nd driven sprocket wheel is provided with a couple the 4th guide rail for the 2nd take-off plate carries out horizontal support, the 3rd sweating room for spraying the reheated steam from reheater supply it is provided with in the lower section of above-mentioned upside the 2nd chain, the 4th sweating room for spraying the reheated steam from reheater supply it is provided with in the lower section of above-mentioned downside the 2nd chain, the 3rd exhaust air chamber for trapping waste gas it is provided with above the chain of above-mentioned upside the 2nd, the 4th exhaust air chamber for trapping waste gas it is provided with above the chain of above-mentioned downside, and the 3rd coal drying machine, it is arranged at the lower section of above-mentioned 2nd coal drying machine, for while transfer is by the coal of reheated steam drying, while carrying out seasoning under normal temperature condition, it is dropped in above-mentioned first coal drying machine to the 2nd coal drying machine and obtains coal dry for the first time, realize second time dry.
And, in the present invention, the steam suppling tube for supplying reheated steam from reheater can be connected to, it is possible to be connected to the gas outlet pipe for discharging waste gas at above-mentioned first exhaust air chamber to the 4th exhaust air chamber at above-mentioned first sweating room to the 4th sweating room.
, in the present invention, further above-mentioned first sweating room can be divided into multiple to the 4th sweating room and above-mentioned first exhaust air chamber to the 4th exhaust air chamber.
And, in the present invention, above-mentioned first take-off plate can be partial to the first chain to carry out hinge combination, above-mentioned 2nd take-off plate can be partial to the 2nd chain to carry out hinge combination, can being formed with multiple through hole respectively in the first take-off plate and the 2nd take-off plate, the percentage of perforation of each through hole can be the 10%��15% of the total area of the first take-off plate or the 2nd take-off plate.
Further, in the present invention, it is possible to be respectively arranged with tail rod in the lower section of above-mentioned first driven sprocket wheel and the 2nd driven sprocket wheel.
, in the present invention, further above-mentioned first driving sprocket wheel can be connected with the 2nd driving sprocket wheel in the way of to be transmitted the rotary power occurred from CD-ROM drive motor respectively by speed reduction unit.
(3) useful effect
The present invention can utilize the reheated steam of high temperature to remove the inside residuing in coal of the use fuel as fuel-burning power plant and outside moisture in multistage coal drying machine, prevent the incomplete combustion of coal, it is thus possible to improve coal heat, and can by discharge minimumization of pollution substance, the protection against corrosion of raising system and weather resistance, reduce the rate of naturally burning till caused by the minimizing of moisture, and improve the crushing efficiency of coal pulverizer, the heat distribution of electricity generation boiler when improving coal burning, solve moving passage latch up phenomenon during transfer coal, improve the utilization ratio of the few rudimentary coal of institute's requirement, finally can improve the stability of coal supply. and, compared with carbon hot with height, cheap low-heat carbon can be used, and can because reducing coal import and fuel economy expense and cost, can relatively reduce coal consumption amount, it is thus possible to enjoy the effect reducing and discharging waste and pollution substance and the reduction carbonic acid gas produced from combustion gases, and the effect such as the substitution effect of foreign technology and the overseas outlet of equipment can be expected.
Accompanying drawing explanation
Fig. 1, as embodiments of the invention, is the block diagram representing the coal drying device utilizing reheated steam.
Fig. 2 is the structure iron of the coal drying device utilizing reheated steam representing the present invention.
Fig. 3 is the side-view of the coal drying device utilizing reheated steam representing the present invention.
Fig. 4 and Fig. 5 is the stereographic map of the major portion of the driven sprocket wheel of the coal drying device utilizing reheated steam representing the present invention.
Embodiment
With reference to accompanying drawing, the embodiment utilizing the coal drying device of reheated steam relevant to the present invention is described in detail.
As shown in Figure 1, storing up coal yard 10 is the place for keeping and the coal storing the boiler oil being used as fuel-burning power plant. Coal includes surface-moisture and internal moisture. And, the coal being stored in coal yard 10 prevents dispersing of coal powder by regularly sprinkling water. The coal being stored in coal yard 10 is transferred to coal drying device by transfer units such as conveyer systems. Now, it is possible to transfer to the drying coal supplying tank 20 being connected with coal drying device and store the coal of the storage coal yard 10 not removing moisture.
And, the appropriate coal being stored in coal supplying tank 20 is supplied from coal measured quantity dispensing device 30 to coal drying device 100.
Coal drying device 100 comprises: two the first coal drying machines 110 and the 2nd coal drying machine 140 being configured to multilayer; And the 3rd coal drying machine 170, for making the coal discharged from the 2nd coal drying machine 140 implement seasoning.First coal drying machine 110 is formed with identical structure with the 2nd coal drying machine 140.
As shown in Figure 2, the first coal drying machine 110 comprises: one to the first driving sprocket wheel 111; And one to the first driven sprocket wheel 112, it is spaced apart with predetermined distance and the first driving sprocket wheel. First driving sprocket wheel 111 and the first driven sprocket wheel 112 form sprocket wheel in the both sides of the cylinder of the width with prescribed level respectively. Therefore, the first driving sprocket wheel 111 and the first driven sprocket wheel 112 leave predetermined distance respectively to left and right and arrange, and are respectively arranged with pair of sprocket in the front and back of the first driving sprocket wheel 111 and the first driven sprocket wheel 112. And, one to the first driving sprocket wheel 111 and to the first driven sprocket wheel 112 between be fastened with a couple for transmitting revolving force first chain 113.
As shown in Figure 3, it is connected with the first driving sprocket wheel 111 in the way of the rotary power occurred from the first CD-ROM drive motor 118 transmits via the first speed reduction unit 119.
As shown in Figure 4, between the first chain 113, coach is combined with multiple first take-off plate 114. First take-off plate 114 is with writing board shape continuous arrangement to the left and right. First take-off plate 114 is combined with hinge at predetermined intervals between the first chain 113, and the first take-off plate 114 is partial to by hinge, and carries out hinge with the hinge hole being formed in the first chain 113 and be combined. The through hole 114a being formed with up/down perforation in the first take-off plate 114, the percentage of perforation of through hole 114a is approximately the 10%��15% of first take-off plate 114 total area. Through hole 114a is the hole of the reheated steam process from bottom injection.
Therefore, by one to the combination of the first driving sprocket wheel 111 and the first driven sprocket wheel 112, first chain 113 and the first take-off plate 114, play the effect identical with the transfer roller transferring coal.
Further, being provided with one to the first guide rail 115 in the lower section of the upside first chain 113a between the first driving sprocket wheel 111 and the first driven sprocket wheel 112, multiple first take-off plate 114 is carried out horizontal support by the first guide rail 115 by above-mentioned one respectively. Further, being provided with one to the 2nd guide rail 116 in the lower section of the downside first chain 113b between the first driving sprocket wheel 111 and the first driven sprocket wheel 112, multiple first take-off plate 114 is carried out horizontal support by the 2nd guide rail 116 by above-mentioned one respectively. First guide rail 115 and the 2nd guide rail 116 while make to carry out with being partial to the first take-off plate 114 maintenance level that hinge is combined with the first chain 113, can transfer coal. Now, formed with two-step way, so that in during making the first driven sprocket wheel 112 fastening by the first chain 113 carry out rotating at the revolving force because of the first driving sprocket wheel 111, coal can be transferred to the first take-off plate 114 combined with upside first chain 113a, and coal can be transferred to the first take-off plate 114 combined with downside first chain 113b.
The lower section of upside first chain 113a is provided with the first sweating room 120, the spatial portion of regulation it is formed with at above-mentioned first sweating room, the lower section of downside first chain 113b is provided with the 2nd sweating room 123, is formed with the spatial portion of regulation at above-mentioned 2nd sweating room 123. First sweating room 120 and the 2nd sweating room 123 can be divided into more than one. First sweating room 120 and the 2nd sweating room 123 supply the reheated steam supplied by steam suppling tube 121 from reheater 40.
And, the first exhaust air chamber 124 it is provided with above the chain 113a of upside first, the spatial portion being formed with regulation at above-mentioned first exhaust air chamber 124, is provided with the 2nd exhaust air chamber 126 above the chain 113b of downside first, is formed with the spatial portion of regulation at above-mentioned 2nd exhaust air chamber 126.First exhaust air chamber 124 and the 2nd exhaust air chamber 126 can be divided into more than one. After the waste gas that first exhaust air chamber 124 and the 2nd exhaust air chamber 126 can change after trapping is sprayed respectively from the first sweating room 120 and the 2nd sweating room 123, above-mentioned waste gas is externally discharged by gas outlet pipe 125. Gas outlet pipe 125 can be provided with the fan for sucking waste gas. And, the waste gas discharged by gas outlet pipe 125 is put to reheater 40 so that is reheated the reheated steam for steady temperature and supplies to the first sweating room 120 of the first coal drying machine 110 and the 2nd sweating room 123 via steam suppling tube 121.
On the other hand, 2nd coal drying machine 140 is arranged at the lower end of the first coal drying machine 110, dry for the coal utilizing reheated steam to carry out first time drying in the first coal drying machine 110 is carried out second time, the structure of the 2nd coal drying machine 140 is roughly the same with the structure of the first coal drying machine 110.
That is, the 2nd coal drying machine 140 comprises: one to the 2nd driving sprocket wheel 141; And one to the 2nd driven sprocket wheel 142, it is spaced apart with predetermined distance and the 2nd driving sprocket wheel. 2nd driving sprocket wheel 141 and the 2nd driven sprocket wheel 142 form sprocket wheel in the both sides of the cylinder of the width with prescribed level respectively. Therefore, the 2nd driving sprocket wheel 141 and the 2nd driven sprocket wheel 142 leave predetermined distance respectively to left and right and arrange, and are respectively arranged with pair of sprocket in the front and back of the 2nd driving sprocket wheel 141 and the 2nd driven sprocket wheel 142.
And, one to the 2nd driving sprocket wheel 141 and to the 2nd driven sprocket wheel 142 between be fastened with a couple for transmitting revolving force the 2nd chain 143. Between the 2nd chain 143, hinge is combined with multiple 2nd take-off plate 144. 2nd take-off plate 144 is with writing board shape continuous arrangement to the left and right. 2nd take-off plate 144 is combined with hinge at predetermined intervals between the 2nd chain 143, hinge deflection the 2nd take-off plate 144, and carries out hinge with the hinge hole being formed in the 2nd chain 143 and be combined. The through hole 144a being formed with up/down perforation in the 2nd take-off plate 144, the percentage of perforation of through hole 144a is approximately the 10%��15% of the 2nd take-off plate 144 total area. Through hole 144a is the hole of the reheated steam process from bottom injection.
Therefore, by one to the combination of the 2nd driving sprocket wheel 141 and the 2nd driven sprocket wheel 142, the 2nd chain 143 and the 2nd take-off plate 144, play the effect identical with the transfer roller transferring coal.
Further, being provided with one to the 3rd guide rail 145 in the lower section of upside the 2nd chain 143a between the 2nd driving sprocket wheel 141 and the 2nd driven sprocket wheel 142, multiple 2nd take-off plate 144 is carried out horizontal support by the 3rd guide rail 145 by above-mentioned one respectively. Further, being provided with one to the 4th guide rail 146 in the lower section of downside the 2nd chain 143b between the 2nd driving sprocket wheel 141 and the 2nd driven sprocket wheel 142, multiple 2nd take-off plate 144 is carried out horizontal support by the 4th guide rail 146 by above-mentioned one respectively. 3rd guide rail 145 and the 4th guide rail 146 while make to carry out with being partial to the 2nd take-off plate 144 maintenance level that hinge is combined with the 2nd chain 143, can transfer coal. Now, formed with two-step way, so that in during making the 2nd driven sprocket wheel 142 fastening by the 2nd chain 143 carry out rotating at the revolving force because of the 2nd driving sprocket wheel 141, coal can be transferred to the 2nd take-off plate 144 combined with upside the 2nd chain 143a, and coal can be transferred to the 2nd take-off plate 144 combined with downside the 2nd chain 143b.
In upside, the lower section of the 2nd chain 143a is provided with the 3rd sweating room 150, the spatial portion of regulation it is formed with at above-mentioned 3rd sweating room 150, in downside, the lower section of the 2nd chain 143b is provided with the 4th sweating room 153, is formed with the spatial portion of regulation at above-mentioned 4th sweating room 153. 3rd sweating room 150 and the 4th sweating room 153 can be divided into more than one. 3rd sweating room 150 and the 4th sweating room 153 supply the reheated steam carried out reheater 40 and supplied by steam suppling tube 121.
And, it is provided with the 3rd exhaust air chamber 154 above the chain 143a of upside the 2nd, the spatial portion being formed with regulation at above-mentioned 3rd exhaust air chamber 154, is provided with the 4th exhaust air chamber 156 above the chain 143b of downside the 2nd, is formed with the spatial portion of regulation at above-mentioned 4th exhaust air chamber 156. 3rd exhaust air chamber 154 and the 4th exhaust air chamber 156 can be divided into more than one. After the waste gas that 3rd exhaust air chamber 154 and the 4th exhaust air chamber 156 can change after trapping is sprayed respectively from the 3rd sweating room 150 and the 4th sweating room 153, above-mentioned waste gas is externally discharged by gas outlet pipe 125. Gas outlet pipe 125 can be provided with the fan for sucking waste gas. And, the waste gas discharged by gas outlet pipe 125 is put to reheater 40 so that is reheated the reheated steam for steady temperature and supplies to the 3rd sweating room 150 of the 2nd coal drying machine 140 and the 4th sweating room 153 via steam suppling tube 121.
Preferably, the chain of the first coal drying machine 110 and the 2nd coal drying machine 140 and the screen of the 2nd take-off plate are approximately every minute about 4m, the coal of transfer per hour about 33 tons.
3rd coal drying machine 170 is arranged at the lower section of the 2nd coal drying machine 140, for transferring coal that is dry by reheated steam and that discharge, and implements seasoning under normal temperature condition. 3rd coal drying machine 170 is made up of the endless belt conveyor of flat belt transfer roller or U-shaped.
While through the 3rd coal drying machine 170, the coal obtaining seasoning is first stored in dry coal storage tanks 50, is supplied to the boiler oil into fuel-burning power plant afterwards.
The operation of the coal drying device utilizing reheated steam of the present invention formed by this way is described.
First, drop into coal drying device 100 to the drying coal of drying coal supplying tank 20 transfer from coal measured quantity dispensing device 30 in storage coal yard 10. First driving sprocket wheel 111 and one to the top of first take-off plate 114 of the upside first chain 113a between the first driven sprocket wheel 112 and are transferred by the drying coal loading dropped in right amount by the first input port 130 of the first coal drying machine 110 of coal drying device 100 in being combined in one. Now, supplied the reheated steam of high temperature to the first sweating room 120 of the bottom being arranged at upside the first chain 113a from reheater 40 by the first steam suppling tube 121, the reheated steam supplied to the first sweating room 120 is sprayed to the through hole 114a being formed at the first take-off plate 114. If spraying reheated steam by through hole 114a, then above the first take-off plate 114, the coal of transfer is heated and dried. Further, the first exhaust air chamber 124 being arranged at the top of upside the first chain 113a through the reheated steam of through hole 114a of the first take-off plate 114 with waste gas form is discharged by gas outlet pipe 125 after trapping. And, by sucking the fan of waste gas, the discharge of the waste gas in gas outlet pipe 125 realizes accelerating.And, the waste gas discharged by gas outlet pipe 125 is put to reheater 40, and is reheating after for steady temperature, supplies to the first sweating room 120 of the first coal drying machine 110 via steam suppling tube 121 with reheated steam state.
Further, the first sweating room 120 arranges more than one continuously in the bottom of upside first chain 113a, and therefore, in the process transferring coal to the first take-off plate 114, coal is through repeatedly drying process.
As shown in Figure 3, the first take-off plate 114 that deflection upside the first chain 113a carries out hinge combination during moving along the first guide rail 115 in maintain horizontality, and when arriving the place that the first guide rail 115 is broken off, first take-off plate 114 is combined by the hinge of deflection rotate because of deadweight, and become vertical state. Now, the coal in the first take-off plate 114 drops in the first take-off plate 114 being combined with downside first chain 113b hinge, and luggage of going forward side by side carries.
And, with the first take-off plate 114 that is combined of the first chain 113 hinge to the first driven sprocket wheel 112 transfer while maintaining vertical state, the first tail rod 117 by the bottom being arranged at the first driven sprocket wheel 112 with circular shape again transfers with horizontality. As shown in Figure 5, the first take-off plate 114 that the first tail rod 117 being fixed on the top of the 2nd guide rail 116 by side is transferred turns into horizontality from vertical state.
And, fall from first take-off plate 114 of upside first chain 113a and it is loaded into the reheated steam that the coal transferred of top of downside the first chain 113b is set to more than one 2nd sweating room 123 continuously by being supplied in the bottom of downside first chain 113b and is heated, and via continuous print drying process. And, after carrying out coal drying in the 2nd exhaust air chamber 126 on top being arranged at downside the first chain 113b, the waste gas of trapping is discharged by gas outlet pipe 125.
And, the first take-off plate 114 that deflection downside the first chain 113b carries out hinge combination during moving along the 2nd guide rail 116 in maintain horizontality, and when arriving the place that the 2nd guide rail 116 is broken off, first take-off plate 114 is combined by the hinge of deflection rotate because of deadweight, and become vertical state. Now, the coal in the first take-off plate 114 is dropped into the first input port 130 of the 2nd coal drying machine 140 by the first relief outlet 131. And, maintaining vertical state with the first take-off plate 114 that is combined of the first chain 113 hinge transferred to the first driving sprocket wheel 111, while driving the rotation of sprocket wheel 111 to transfer along with first, and again becoming horizontality.
Therefore, the transfer of the first chain 113 between sprocket wheel 111 and the first driven sprocket wheel 112 is driven by being anchored on the first of the first coal drying machine 110, the coal that the top being loaded into the first take-off plate 114 is transferred at upside first chain 113a and downside first chain 113b respectively reheated steam by high temperature carry out continuous print drying, thus remove coal surface and inner moisture.
On the other hand, if being discharged by the first relief outlet 131 through the coal of drying process in the first coal drying machine 110, then the 2nd input port 160 to the 2nd coal drying machine 140 of the lower section being arranged at the first coal drying machine 110 is dropped into.
First time dry coal loading is obtained in the 2nd driving sprocket wheel 141 and one top of the 2nd take-off plate 144 that upside the 2nd chain 143a between the 2nd driven sprocket wheel 142 combines being transferred with 1 by what the 2nd input port 160 of the 2nd coal drying machine 140 of coal drying device 100 was dropped into.Now, the reheated steam of high temperature is supplied to the 3rd sweating room 150 of the bottom being arranged at upside the 2nd chain 143a from reheater 40, and the reheated steam supplied to the 3rd sweating room 150 is sprayed to the through hole 144a being formed at the 2nd take-off plate 144 by the 2nd steam suppling tube 151. If spraying reheated steam by through hole 144a, then the coal carrying out transferring above the 2nd take-off plate 144 is heated and dried. Further, through the 2nd take-off plate 144 through hole 144a reheated steam trap with waste gas form in be arranged on upside the 2nd chain 143a top the 3rd exhaust air chamber 154 after, discharged by gas outlet pipe 125. And, by sucking the fan of waste gas, the discharge of the waste gas in gas outlet pipe 125 realizes accelerating. And, the waste gas discharged by gas outlet pipe 125 is put to reheater 40, and is reheating after for steady temperature, supplies to the 3rd sweating room 150 of the 2nd coal drying machine 140 via steam suppling tube 121 with reheated steam state.
Further, the 3rd sweating room 150 arranges more than one continuously in the bottom of upside the 2nd chain 143a, and therefore, in the process transferring coal to the 2nd take-off plate 144, coal is through repeatedly drying process.
And, the 2nd take-off plate 144 that deflection upside the 2nd chain 143a carries out hinge combination during moving along the 3rd guide rail 145 in maintain horizontality, and when the place that the 3rd guide rail 145 volume of arrival is broken off, 2nd take-off plate 144 is combined by the hinge of deflection rotate because of deadweight, and become vertical state. Now, the coal in the 2nd take-off plate 144 drops in the 2nd take-off plate 144 being combined with downside the 2nd chain 143b hinge, and luggage of going forward side by side carries.
And, with the 2nd take-off plate 144 that is combined of the 2nd chain 143 hinge to the 2nd driven sprocket wheel 142 transfer while maintaining vertical state, the 2nd tail rod 157 by the bottom being arranged at the 2nd driven sprocket wheel 142 with circular shape again transfers with horizontality. The 2nd take-off plate 144 that the 2nd tail rod 157 being fixed on the top of the 4th guide rail 146 by side is transferred turns into horizontality from vertical state.
And, from upside, the 2nd take-off plate 144 of the 2nd chain 143a falls and reheated steam that the coal transferred of top that is loaded into downside the 2nd chain 143b is set to more than one 4th sweating room 153 continuously by being supplied to the bottom of the 2nd chain 143b in downside is heated, and via continuous print drying process. And, after carrying out coal drying in the 4th exhaust air chamber 156 on top being arranged at downside the 2nd chain 143b, the waste gas of trapping is discharged by gas outlet pipe 125.
And, the 2nd take-off plate 144 that deflection downside the 2nd chain 143b carries out hinge combination during moving along the 4th guide rail 146 in maintain horizontality, and when arriving the place that the 4th guide rail 146 is broken off, 2nd take-off plate 144 is combined by the hinge of deflection rotate because of deadweight, and become vertical state. Now, the coal in the 2nd take-off plate 144 is discharged by second row outlet 161 to the 3rd coal drying machines 170. And, with the 2nd vertical state of take-off plate 144 that is combined of the 2nd chain 143 hinge transferred to the 2nd driving sprocket wheel 141, while driving the rotation of sprocket wheel 141 to transfer along with the 2nd, and again become horizontality.
Therefore, the transfer of the 2nd chain 143 between sprocket wheel 141 and the 2nd driven sprocket wheel 142 is driven by being anchored on the 2nd of the 2nd coal drying machine 140 the, the coal that the top being loaded into the 2nd take-off plate 144 is transferred in upside the 2nd chain 143a and downside the 2nd chain 143b respectively reheated steam by high temperature carry out continuous print drying, thus second time removes coal surface and inner moisture.
2nd coal drying machine 140 is by the formation identical with the first coal drying machine 110 and structure, and is dried by coal by identical drying process. Therefore, after drying coal obtains first time drying in the first coal drying machine 110, the 2nd coal drying machine 140 obtains second time dry.
2nd coal drying machine 140 exports 161 through the coal of second time drying process by second row discharge, and discharge to the 3rd coal drying machine 170. 3rd coal drying machine 170 is while transfer the coal input by the 2nd coal drying machine 140 to endless belt conveyor, and under normal temperature condition, the coal being heated to be steady temperature is carried out seasoning and cooling. The coal transferred to the 3rd coal drying machine 170 is fed into dry coal storage tanks 50, and after storage, transfers to fuel-burning power plant 60.
Can make in the first coal drying machine 110 and the 2nd coal drying machine 140 through the rise in temperature of the coal of drying process extremely about 90 DEG C��110 DEG C. The spontaneous ignition temperature of coal is about 93 DEG C��95 DEG C, but the temperature of reheated steam is about 400 DEG C��600 DEG C, is in anoxic shape body, therefore, can not make spontaneous combustion of coal, thus there is not fire hazard.
Further, the reheated steam generated in reheater 40 is the transparent gas that the condensation heat transfer by making as the aobvious heat of the latent heat of vaporization of vaporization heat and heating and radiation conduction heat mix. The saturation steam occurred in the boiler is made to be heated to be reheater to generate reheated steam. Although the steam generated in the boiler for generating electricity belongs to high pressure and high temperature, but the reheated steam generated in reheater belongs to low pressure and high temperature. Owing to the water of normal temperature is carried out heating to generate reheated steam, therefore, make the residual oxygen in water become several ppm, if not mixing mutually with air, then can heat-treat with anaerobic state, and because possessing heat height, there is very strong heat-transfer capability and drying power. With hot blast, that is, the heat treatment capacity of high temperature air is compared, outstanding about about 10 times of reheated steam. Therefore, reheated steam is very effective in the latent heat removed in coal.
In the above description; although the present invention has carried out illustrating and illustrating with relevant to specific embodiment; but as long as being general technical staff of the technical field of the invention, so that it may with easily grasp can not depart from invention claimed scope shown in the thought of invention and the limit in field in carry out multiple transformation and change.
Utilizability in industry
The coal drying device of reheated steam that utilizes of the present invention can improve coal heat, and can by discharge minimumization of pollution substance, the protection against corrosion of raising system and weather resistance, reduce the rate of naturally burning till caused by the minimizing of moisture, and improve the crushing efficiency of coal pulverizer, the heat distribution of electricity generation boiler when improving coal burning, solve moving passage latch up phenomenon during transfer coal, improve the utilization ratio of the few rudimentary coal of institute's requirement, finally can improve the stability of coal supply, thus there is the utilizability in industry.

Claims (6)

1. utilizing a coal drying device for reheated steam, it is the system for dry coal, it is characterised in that, comprising:
First coal drying machine, one pair first drives sprocket wheel and to be separated with predetermined distance by first driven sprocket wheel, and be fastened by multiple first chain respectively, between multiple first chain, hinge is combined with multiple first take-off plate, the lower section of upside the 2nd chain being connected between the first driving sprocket wheel and the first driven sprocket wheel is provided with a couple first guide rail for the first take-off plate carries out horizontal support, a couple the 2nd guide rail for the first take-off plate being carried out horizontal support it is provided with in the lower section of downside first chain being connected between the first driving sprocket wheel and the first driven sprocket wheel, the first sweating room for spraying the reheated steam from reheater supply it is provided with in the lower section of above-mentioned upside first chain, the 2nd sweating room for spraying the reheated steam from reheater supply it is provided with in the lower section of above-mentioned downside first chain, the first exhaust air chamber for trapping waste gas it is provided with above the chain of above-mentioned upside first, the 2nd exhaust air chamber for trapping waste gas it is provided with above the chain of above-mentioned downside first,
2nd coal drying machine, one pair the 2nd drives sprocket wheel and to be separated with predetermined distance by the 2nd driven sprocket wheel, and be connected by the 2nd chain respectively, between multiple 2nd chain, hinge is combined with multiple 2nd take-off plate, the lower section of upside the 2nd chain being connected between the 2nd driving sprocket wheel and the 2nd driven sprocket wheel is provided with a couple the 3rd guide rail for the 2nd take-off plate carries out horizontal support, the lower section of downside the 2nd chain being connected between the 2nd driving sprocket wheel and the 2nd driven sprocket wheel is provided with a couple the 4th guide rail for the 2nd take-off plate carries out horizontal support, the 3rd sweating room for spraying the reheated steam from reheater supply it is provided with in the lower section of above-mentioned upside the 2nd chain, the 4th sweating room for spraying the reheated steam from reheater supply it is provided with in the lower section of above-mentioned downside the 2nd chain, the 3rd exhaust air chamber for trapping waste gas it is provided with above the chain of above-mentioned upside the 2nd, the 4th exhaust air chamber for trapping waste gas it is provided with above the chain of above-mentioned downside, and
3rd coal drying machine, is arranged at the lower section of above-mentioned 2nd coal drying machine, for transfer by the coal of reheated steam drying, while carrying out seasoning under normal temperature condition,
It is dropped in above-mentioned first coal drying machine to the 2nd coal drying machine and obtains coal dry for the first time, realize second time dry.
2. the coal drying device utilizing reheated steam according to claim 1, it is characterized in that, it is connected to the steam suppling tube for supplying reheated steam from reheater at above-mentioned first sweating room to the 4th sweating room, it is connected to the gas outlet pipe for discharging waste gas at above-mentioned first exhaust air chamber to the 4th exhaust air chamber.
3. the coal drying device utilizing reheated steam according to claim 1, it is characterised in that, above-mentioned first sweating room is divided into multiple to the 4th sweating room and above-mentioned first exhaust air chamber to the 4th exhaust air chamber.
4. the coal drying device utilizing reheated steam according to claim 1, it is characterized in that, above-mentioned first take-off plate is partial to the first chain to carry out hinge combination, above-mentioned 2nd take-off plate deflection the 2nd chain carries out hinge combination, being formed with multiple through hole respectively in the first take-off plate and the 2nd take-off plate, the percentage of perforation of each through hole is the 10%��15% of the total area of the first take-off plate or the 2nd take-off plate.
5. the coal drying device utilizing reheated steam according to claim 1, it is characterised in that, it is respectively arranged with tail rod in the lower section of above-mentioned first driven sprocket wheel and the 2nd driven sprocket wheel.
6. the coal drying device utilizing reheated steam according to claim 1, it is characterised in that, above-mentioned first driving sprocket wheel is connected in the way of to be transmitted the rotary power occurred from CD-ROM drive motor respectively by speed reduction unit with the 2nd driving sprocket wheel.
CN201480057843.3A 2013-10-30 2014-10-28 Apparatus for drying coal using reheat steam Pending CN105659044A (en)

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KR1020130129735A KR101408147B1 (en) 2013-10-30 2013-10-30 Apparatus for Drying Coal using Reheat Steam
PCT/KR2014/010159 WO2015064996A1 (en) 2013-10-30 2014-10-28 Apparatus for drying coal using reheat steam

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