CN111561813B - Energy-saving mixed baking equipment - Google Patents

Energy-saving mixed baking equipment Download PDF

Info

Publication number
CN111561813B
CN111561813B CN201910199317.5A CN201910199317A CN111561813B CN 111561813 B CN111561813 B CN 111561813B CN 201910199317 A CN201910199317 A CN 201910199317A CN 111561813 B CN111561813 B CN 111561813B
Authority
CN
China
Prior art keywords
exhaust gas
boiler
inflow
biomass
raw material
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN201910199317.5A
Other languages
Chinese (zh)
Other versions
CN111561813A (en
Inventor
李相圭
金圣哲
张喆浩
尹正植
朴殷敬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omcorell Ltd
Original Assignee
Omcorell Ltd
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 Omcorell Ltd filed Critical Omcorell Ltd
Publication of CN111561813A publication Critical patent/CN111561813A/en
Application granted granted Critical
Publication of CN111561813B publication Critical patent/CN111561813B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
    • F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
    • F26B11/0486—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum the elements being held stationary, e.g. internal scraper blades
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/005—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8631—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
    • C10B57/02—Multi-step carbonising or coking processes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
    • C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
    • C10B57/10—Drying
    • 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
    • C10L5/40—Solid fuels essentially based on materials of non-mineral origin
    • C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/008—Seals, locks, e.g. gas barriers or air curtains, for drying enclosures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/20—Sulfur; Compounds thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/10—Intercepting solids by filters
    • F23J2217/102—Intercepting solids by filters electrostatic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The present invention relates to an energy-saving hybrid torrefaction apparatus for torrefying biomass raw material using exhaust gas discharged from a boiler, minimizing inflow of external air, thereby torrefying biomass raw material under anaerobic condition, increasing contact efficiency of exhaust gas with biomass raw material, and burning exhaust gas for torrefaction.

Description

Energy-saving mixed baking equipment
Technical Field
The present invention relates to an energy-saving hybrid torrefaction apparatus, and more particularly, to an energy-saving hybrid torrefaction apparatus which torrefies biomass raw materials by using exhaust gas discharged from a boiler, minimizes inflow of external air, performs torrefaction under oxygen-free conditions, increases contact efficiency of the exhaust gas with the biomass raw materials, and burns the exhaust gas for torrefaction to torrefy the biomass raw materials.
Background
As the implementation of greenhouse gas target systems, interest in biomass as one of new renewable energy sources is increasing day by day. Thus, development of fuels using biomass has been raised as a major problem, but biomass resources are not abundant in korea, and thus, they have to be imported overseas.
On the other hand, the biomass in the form of particles contains water therein, and is very dilute due to the fiber component, and is difficult to use as a fuel due to its low pulverizability. In contrast, a Torrefaction (Torrefaction) technique has been developed as a pretreatment step for using biomass as a raw material.
The baking technique is a technique of heating the biomass raw material at a temperature of 200 to 300 ℃ for 10 to 60 minutes in the absence of oxygen. Baked pellets (Pellet) produced by baking technology have hydrophobicity and have extremely low moisture content, so that appearance changes such as rottenness and distortion caused by microorganisms are small. Further, as the Fixed carbon (Fixed carbon) content increases, the advantage of excellent handling properties such as handling and storage is obtained while reducing costs when transporting the carbon from a long distance, and high energy density is obtained due to high pulverizability.
As a system for torrefying biomass raw materials, a biomass torrefaction system and method are disclosed in korean laid-open patent publication No. 10-1727967.
The technology comprises the following steps: an inlet for receiving torrefied biomass particles; a reaction cylinder which rotates around a rotation axis and has a plurality of scrapers (flight) arranged at a plurality of positions along a transverse length; a heat source supplying air heated at a temperature suitable for baking to an upper portion of the reaction cylinder; a fan (fan) device which mixes the biomass fine particles with the scraper along with the rotation of the reaction cylinder and is connected to generate an air flow by the supplied heated air; and an air pipe configured to recirculate at least a part of the gas released from the reaction tube to the heat source to reheat the gas.
However, in the above-described technology, the gas released from the reactor is recycled as a heat source and flows into the reactor, and the gas is reused as a heating heat source.
Further, Korean patent laid-open publication No. 10-1838982 discloses an organic waste treatment apparatus using a dry carbonization method.
The organic waste treatment apparatus using the dry carbonization method in the above-described technology is characterized by comprising: an organic matter treatment apparatus for changing the treatment conditions of organic waste and reusing (semi) carbide produced by carbonization and baking as a by-product such as an auxiliary fuel; and a dryer integrated with a Regenerative Thermal Oxidizer (RTO) corresponding to a Thermal Oxidizer for removing offensive odors and various organic gases by using waste heat.
However, the above-mentioned technology has a problem that a heating portion for directly heating the outside of the dryer or the carbonizer is configured, thereby causing a large heating loss, and exhaust gas generated during heating is released to the atmosphere, thereby causing air pollution.
Documents of the prior art
Patent document
Patent document 0001: korea 10-1727967B1 (12.04.2017)
Patent document 0002: korea 10-1838982B1(2018, 03, 09 month)
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide an energy-saving hybrid torrefaction apparatus which produces torrefied material by first and second drying of biomass material using exhaust gas discharged from a boiler, and which increases thermal efficiency by supplying gas discharged during torrefaction production to the boiler.
It is another object of the present invention to provide an energy-saving hybrid torrefaction apparatus that minimizes the inflow of outside air into a drying part or a carbonization part and prevents spontaneous combustion during torrefaction of a biomass raw material.
The energy-saving type hybrid roasting apparatus of the present invention for achieving the object as described above is characterized by comprising: a boiler part for receiving and burning fuel and heating fluid by using the heat of combustion; a combustion chamber section for collecting and outputting exhaust gas discharged from the boiler section; a drying section that receives the exhaust gas output from the combustion chamber section and dries the supplied biomass raw material; a torrefaction section that receives the exhaust gas output from the combustion chamber section and torrefies the biomass raw material discharged from the drying section to produce a torrefied raw material; a cooling unit for cooling the baking material discharged from the baking unit; and a gas recirculation unit configured to supply gas discharged from the drying unit and the roasting unit as combustion air of the boiler, wherein the boiler unit includes: a boiler that heats fluid by burning fuel; a selective catalytic device for removing nitrogen oxides contained in the exhaust gas discharged from the boiler; a first air preheater for heating the exhaust gas discharged from the selective catalyst device; an electric dust collector for removing fine dust contained in the exhaust gas discharged from the first air preheater; and a desulfurization device disposed at the rear end of the electric dust collector for removing sulfur oxides contained in the exhaust gas.
In the present invention, the combustion chamber section collects at least one kind of exhaust gas selected from the exhaust gas discharged from the selective catalyst device and the exhaust gas discharged from the first air preheater and supplies the collected exhaust gas to the drying section and the torrefying section.
In addition, the present invention is characterized in that the drying section and the baking section include: a drum that is rotated by driving of a motor, and has a scraper provided therein for drying or baking the supplied biomass raw material; an inflow module for guiding the supplied biomass raw material to the cylinder and supplying the exhaust gas supplied from the combustion chamber section to the cylinder; and a discharge module for discharging the biomass raw material dried or baked in the drum, wherein the energy-saving type mixing and baking apparatus includes a sealing part including a first sealing part disposed between the drum and the inflow module for preventing inflow of external air, and a second sealing part disposed between the drum and the discharge module for preventing inflow of external air.
In addition, according to the present invention, the first seal portion includes: a first bracket provided in an inflow pipe, the inflow module mixing an exhaust gas and a biomass material and flowing into the inflow pipe; a first sealing material provided to the first bracket and contacting the flange of the inflow pipe; a first blade sealing material provided on the first sealing material; a second bracket extending from the first bracket and protruding toward the cylinder side; a second sealing member provided on the second bracket so as to be in contact with the flange of the tube; and a second blade sealing material provided on the second sealing material.
In the present invention, the gas recirculation unit heats the gas discharged from the drying unit and the roasting unit by a second air preheater and supplies the heated gas to the boiler.
According to the present invention, the present invention has an advantage in that the exhaust gas discharged from the boiler is used for torrefaction of the biomass raw material, and the exhaust gas used for torrefaction is supplied to the boiler again, thereby increasing the thermal efficiency of the apparatus by using the exhaust gas discharged from the boiler.
Further, the present invention has an advantage in that the external air that can flow into the drying part or the roasting part is minimized, thereby preventing heat loss of the heating air and maintaining the interior of the carbonizing machine in an oxygen-free condition, thereby preventing spontaneous combustion of the roasting raw material.
Drawings
Fig. 1 is a schematic overall configuration diagram of an energy-saving type hybrid roasting apparatus of the present invention.
FIG. 2 is a sectional view of a combustion chamber section of an energy saving type mixing and roasting apparatus suitable for use in the present invention.
Fig. 3 is a structural view of a drying part of an energy-saving type hybrid roasting apparatus to which the present invention is applied.
Fig. 4 is a sectional view ((a) portion) and each region of a drum ((b) portion) of a drying section of an energy-saving type hybrid roasting apparatus applied to the present invention.
Fig. 5 is a sectional view of an ascending scraper of a drying part of an energy-saving type hybrid roasting apparatus applicable to the present invention.
Fig. 6 is a view showing the structure of a sealing part of the energy-saving type hybrid roasting apparatus of the present invention.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.
The present invention relates to an energy-saving hybrid torrefaction apparatus for torrefying biomass raw material using exhaust gas discharged from a boiler, torrefying under anaerobic conditions by minimizing inflow of external air, increasing contact efficiency of the exhaust gas with the biomass raw material, and combusting the exhaust gas for torrefaction to torrefy the biomass raw material.
Fig. 1 is a schematic overall configuration diagram of an energy-saving type hybrid roasting apparatus of the present invention.
Referring to fig. 1, the energy-saving type hybrid roasting apparatus of the present invention includes a boiler section 100, a combustion chamber section 200, a drying section 300, a roasting section 400, a cooling section 500, a gas recirculation section 600, and a sealing section 700.
The boiler unit 100 receives and burns fuel, heats fluid by the heat of combustion, and supplies the heated fluid as steam.
In this case, the boiler unit 100 performs exhaust gas by combustion of fuel, and includes a device for removing nitrogen oxides and sulfur oxides contained in the discharged exhaust gas.
That is, the boiler part 100 may include: a boiler 110 for heating fluid by burning fuel; a Selective Catalytic device 120 (SCR) for removing nitrogen oxides contained in the exhaust gas discharged from the boiler 110; a first air preheater 130 for heating the gas discharged from the selective catalyst device 120; an electric dust collector 140 for removing fine dusts contained in the exhaust gas discharged from the first air preheater 130; and a desulfurization unit 150 disposed at the rear end of the electrostatic precipitator 140 to remove sulfur oxides contained in the exhaust gas.
The selective catalyst device 120 injects urea water through an injector operating at a temperature of the exhaust gas of 180 to 190 ℃, and the injected urea water is converted into ammonia with the exhaust gas by a chemical action. The converted ammonia is used for converting NO contained in the exhaust gas into NO2Shifting to nitrogen and water.
The desulfurization device 150 may include a bag filter for collecting a desulfurizing agent that adsorbs sulfur oxides by spraying the desulfurizing agent.
In the present invention, the exhaust gas discharged from the boiler unit 100 is used for the step of roasting the biomass.
FIG. 2 is a sectional view of a combustion chamber section of an energy saving type mixing and roasting apparatus suitable for use in the present invention.
Referring to fig. 2, the combustion chamber section 200 collects and outputs the exhaust gas discharged from the boiler section 100, and includes: a chamber 210 for allowing the exhaust gas to flow in and be discharged; and a burner 220 disposed at one side of the chamber 210.
The biomass material contains a plurality of components, and changes in physical properties of the biomass material with respect to temperature are observed in the baking step, and most of water evaporates at a temperature of 100 to 150 ℃, and devolatilization and depolymerization of hemicellulose and lignin begin to occur at a temperature of 150 to 200 ℃, and limited devolatilization occurs at a temperature of 200 to 250 ℃, and combustion of hemicellulose, volatile organic compounds, and other extraction solvents occurs. Furthermore, at a temperature of 250 to 300 ℃, baking is completed, and the lignocellulosic biomass becomes hydrophobic, so that storage stability is improved.
The temperature of the exhaust gas discharged from the boiler part 100 may satisfy the above reaction temperature condition. However, heat loss may occur in the process of supplying the exhaust gas discharged from the boiler 110 to the drying part 300 and the roasting part 400 through the duct. In particular, in winter, the exhaust gas discharged from the boiler 110 cannot satisfy the torrefaction reaction temperature condition. In addition, the temperature of the exhaust gas supplied to the drying section 300 and the torrefaction section 400 needs to be adjusted according to the combination ratio of the fibrous composite substances of the biomass material.
In contrast, the present invention includes the burner 220 that increases the reaction temperature supplied to the drying unit 300 and the roasting unit 400 according to the temperature of the exhaust gas discharged and fed from the boiler 110.
In this case, the burner 220 detects the temperature of the exhaust gas, burns the fuel according to the detected temperature, heats the exhaust gas at an appropriate temperature for baking, and blows the air.
In the above configuration, the combustion chamber section 200 may be configured to blow air by flowing in one exhaust gas selected from the exhaust gas discharged from the selective catalyst device 120 of the boiler section 100 or the exhaust gas discharged from the first air preheater 130, but may be configured to blow air by mixing the exhaust gas discharged from the selective catalyst device 120 of the boiler section 100 and the exhaust gas discharged from the first air preheater 130, if necessary.
In the structure of the combustion chamber section 200, the exhaust gas flowing in and the heat generated by the combustion of the burner 220 are mixed in the chamber 210 to blow air and output. In this case, in order to facilitate complete combustion when the burner 220 is burned, a combustion guide 211 surrounding the fuel nozzle of the burner 220 is provided inside the cavity 210.
The front of the combustion guide 211 is open along the spark injection direction of the burner 220, and the front of the opening is formed in a shape curved inward.
A guide plate 212 for bringing the spark guided by the combustion guide 211 into contact with the gas flowing in is provided inside the chamber 210.
On the other hand, the exhaust gas flowing into the chamber 210 is guided to the outer surface of the combustion guide 211, moves toward the exhaust port 213, and is heated and blown by the flame generated in the burner 220.
The exhaust gas (heated air) blown from the combustion chamber section 200 satisfies the non-oxidation condition and the reaction rate in the roasting step, and the blown exhaust gas is branched and supplied to the drying section 300 and the roasting section 400, respectively.
The drying section 300 receives the exhaust gas output from the combustion chamber section 200 to dry the supplied biomass raw material, and the torrefying section 400 receives the exhaust gas output from the combustion chamber section 200 to torrefy the biomass raw material discharged from the drying section 300 to produce a torrefied raw material.
That is, the drying unit 300 and the torrefying unit 400 receive the exhaust gas to dry and torrefy the biomass raw material, and the drying unit 300 and the torrefying unit 400 may have the same configuration.
Fig. 3 is a structural view of a drying part of an energy-saving type hybrid roasting apparatus to which the present invention is applied.
Referring to fig. 3, the drying part 300 includes: a drum 310 rotated by driving of a motor and having a blade provided therein; an inflow module 320 that inflows the biomass raw material; and a discharge module 330 that discharges the dried biomass feedstock. Also, the roasting part 400 of the present invention has the same structure as the drying part 300, the structure of the drying part 300 will be described, and the description of the roasting part 400 overlapping with the structure of the drying part 300 will be omitted.
First, the inflow module 320 is explained.
The inflow module 320 includes: a hopper 321 for supplying a biomass raw material; an airlock feeder 322(Air lock feeder) for supplying the biomass material supplied to the hopper in a state where the outside Air is blocked; and an inflow pipe 323 that guides the biomass raw material supplied from the airlock feeder 322 to the barrel 310, receives the exhaust gas supplied from the combustion chamber section 200, and supplies the exhaust gas to the barrel 310.
The airlock feeder 322 prevents inflow of oxygen into the cylinder 310 while external air, that is, the biomass material is supplied to the cylinder 310, and supplies the biomass material charged into the hopper 321 to the inflow pipe 323 by a conveyor belt or another known mechanism.
The drum 310 is rotated by a motor (not shown) and has a scraper provided therein to dry and bake the supplied biomass material, and the biomass material supplied from the inflow module 310 is dried and baked by the exhaust gas supplied from the inflow module 310.
In this case, the drum 310 is installed on a horizontal and vertical frame, and is rotated by a plurality of rollers, and is provided with gears (or pulleys) extending in the outer circumference, and is rotated by a chain (or belt) connected to a motor (not shown).
The cylinder 310 may be horizontally disposed according to the disposition of the scraper provided therein, and the cylinder 310 may be further formed to be inclined such that the supplied biomass material naturally moves from the inflow module 320 to the discharge module 330.
In the present invention, the cylinder 310 may be horizontally disposed, and a plurality of scrapers for mixing and moving the biomass material may be provided inside the cylinder.
The scraper mixes the biomass material flowing into the inflow module 320 by the rotation of the cylinder 310, and dries and bakes the biomass material by bringing the inflow exhaust gas into contact with the biomass material, thereby dividing the cylinder 310 into predetermined regions, each of which is arranged in a state of rotating at a predetermined angle.
Fig. 4 is a sectional view ((a) portion) and each region of a drum ((b) portion) of a drying section of an energy-saving type hybrid roasting apparatus applied to the present invention.
Referring to fig. 4, the cylinder 310 of the drying unit 300 is divided into a plurality of regions from the inlet to the outlet, and a plurality of scrapers are provided in the cylinder in each region.
The blades provided in the divided regions are arranged in the horizontal direction, and the installation angle of the blade provided in the rear end region and the installation angle of the blade provided in the front end region form an angle of 45 °.
Each area is divided into an a area 310A provided for the conveyance squeegee 311 provided on the inflow block 320 side and B areas 310B to L areas 310L dividing the rear end of the a area.
The conveyance blade 311 provided in the a region 310A is formed in a spiral shape to supply the biomass material, which has flowed in through the inflow block 320, to the inside of the cylinder 310 and forcibly transfer the biomass material by the rotation of the cylinder 310.
The ascending scrapers 312 provided in the B-region 310B to the L-region 310L mix the biomass material, pull up the biomass material located on the bottom surface inside the barrel 310, and descend the biomass material, so that the biomass material naturally moves to the discharge module 330.
The rising blade 312 provided in the C region 310C is provided at a position rotated by 45 ° from the reference angle in the rotation direction of the cylinder 310, with the installation angle of the rising blade 312 provided in the B region 310B as the reference angle.
The rising blade 312 provided in the D region 310D is provided at a position rotated by 45 ° in the rotation direction of the cylinder 310 from the installation angle of the rising blade 312 provided in the C region 310C.
In the above manner, the rising squeegee 312 is provided in the E region 310E to the L region 310L.
Fig. 5 is a sectional view of an ascending scraper of a drying part of an energy-saving type hybrid roasting apparatus applicable to the present invention.
Referring to fig. 5, the rising blade 312 includes: a support plate 312A vertically disposed inside the drum 310; a curved plate 312B provided at the front end of the support plate 312A and arranged at a predetermined angle along the rotation direction of the cylinder; and a reinforcing member 312c (stiffener) for preventing deformation of the support plate 312A.
The ascending scraper 312 having the above-described structure pulls the biomass material located on the bottom surface inside the cylinder 310 to fall, and increases the contact time with the inflowing exhaust gas to rapidly dry and bake the biomass material.
In the B region 310B to the L region 310L, the scraper provided in the rear end region is provided at a position rotated by 45 ° in the rotation direction of the cylinder 310 with respect to the installation angle provided in the front end region, and therefore the biomass material can move from the inflow block 320 to the discharge block 330.
The discharge module 330 (see fig. 3) discharges the biomass raw material dried in the drum 310.
In this case, the discharge module 330 includes: an Air lock ejector 331(Air lock ejector) that discharges the dried biomass raw material and prevents inflow of outside Air; and an exhaust port 332 through which exhaust gas for drying is discharged.
In the process of charging or discharging the biomass material into or from the cylinder 310, the airlock feeder 322 of the inflow module 320 and the airlock ejector 331 of the discharge module 330 prevent the biomass material from contacting the outside air, thereby preventing the biomass material from spontaneously combusting due to the high temperature of the exhaust gas. The air-lock feeder 322 and the air-lock feeder 331 can be applied to the conventional art.
On the other hand, the roasting part 400 includes a drum, an inflow module, and an exhaust module having the same structures as the drum 310, the inflow module 320, and the exhaust module 330 of the drying part 300 described above, and thus, a description of the roasting part 400 will be omitted.
The biomass raw material discharged from the discharge module 330 of the drying unit 300 is supplied to the inflow module of the torrefaction unit 400, and the torrefied raw material produced in the torrefaction unit 400 is supplied to the cooling unit 500 through the discharge module.
The cooling unit 500 (see fig. 1) cools the baking material discharged from the baking unit 400.
The temperature inside the cylinder of the roasting part 400 is maintained at 250 to 300 ℃, and when the roasting material produced and discharged from the cylinder of the roasting part 400 comes into contact with air, spontaneous combustion may occur. On the other hand, the cooling unit 500 moves in a state in which the contact between the prepared baking material and the air is minimized, and is cooled by the supplied cold water while moving.
The gas recirculation unit 600 (see fig. 1) is configured to supply gas (flue gas) discharged from the drying unit 300 and the roasting unit 400 as combustion air of the boiler 100.
In this case, the gas recirculation unit 600 heats the gas exhausted from the drying unit 300 and the roasting unit 400 by the second air preheater 610 to supply the combustion air to the boiler 100.
The temperature of the gas discharged from the drying part 300 and the roasting part 400 is lowered during the drying and roasting of the biomass raw material and during the transfer.
The second air preheater 610 heats the gas (the exhaust gas discharged from the drying unit 300 and the roasting unit 400) by using the residual heat of the exhaust gas discharged from the boiler 110, mixes the heated gas with the fuel, and supplies the mixed gas to the boiler 110.
When the preheated air is supplied to the boiler 110, the temperature of the combustion air is increased, so that the ignition heat is remarkably reduced, thereby improving the combustion efficiency of the fuel. Also, an excessive phenomenon of air flowing into the boiler 110 can be prevented, and a condition that fuel having a relatively low quality can be burned is provided.
On the other hand, in the drying or baking process, inflow of external air may reduce the quality of the baking raw material or may cause a fire due to spontaneous combustion, and weak portions into which external air may flow are between the inflow module and the drum and between the drum and the exhaust module in the baking apparatus. That is, the drum is a rotating body that mixes and moves the charged biomass material, the inflow module and the discharge module provided on both side surfaces of the drum are fixed bodies, and the sealing structure between the rotating body and the fixed bodies plays an important role in preventing inflow of outside air.
The sealing part 700 is provided between the inflow module as a fixed body and the cylinder as a rotating body and between the cylinder as a rotating body and the discharge module as a fixed body, and prevents inflow of external air into the cylinder.
Fig. 6 is a view showing the structure of a sealing part of the energy-saving type hybrid roasting apparatus of the present invention.
Referring to the drawings, the sealing part 700 includes: a first sealing part 701 provided between the cylinder 310 and the inflow block 320 to prevent inflow of external air; and a second sealing part 702 provided between the cylinder and the discharge module 330 to prevent inflow of external air.
The first sealing part 701 and the second sealing part 702 form a bilaterally symmetrical structure, and the description of the first sealing part 701 is used to replace the description of the second sealing part 702.
The first sealing portion 701 includes: a first bracket 710 provided in the inflow pipe 323, the exhaust gas from the inflow module 320 and the biomass material being mixed and flowing into the inflow pipe 323; a first sealing member 720 provided on the first bracket 710 and contacting the flange 324 of the inflow pipe 323; a first blade sealing member 730 provided on the first sealing member 720; a second bracket 740 extending from the first bracket 710 and protruding toward the tube 310; a second sealing member 750 provided on the second holder 740 so as to be in contact with the flange 311 of the tube 310; and a second blade sealing material 760 provided to the second sealing material 750.
In the above configuration, the first sealing member 720 and the second sealing member 750 are formed in a doughnut shape and contact the flange 324 of the inflow pipe 323, thereby blocking air that may flow in.
The first vane sealing material 730 and the second vane sealing material 760 are made of chips having a predetermined width, and a part of one vane sealing material overlaps a part of an adjacent vane sealing material.
The second bracket 740 has a cylindrical shape having flanges on both sides.
The sealing section 700 has a double structure of the first vane sealing material 730 provided on the first sealing material 720 and the second vane sealing material 760 provided on the second sealing material 750, and thus the sealing efficiency is greatly improved.
According to the present invention, the exhaust gas discharged from the boiler is used for torrefaction of the biomass raw material, and the exhaust gas used for torrefaction is supplied to the boiler again, thereby increasing the thermal efficiency of the apparatus by using the exhaust gas discharged from the boiler.
Further, by minimizing the external air that can flow into the drying section and the baking section, the heat loss of the heated air can be prevented and the interior thereof can be maintained in an oxygen-free condition, thereby preventing spontaneous combustion of the baking material.
While the preferred embodiments of the present invention have been described above, the scope of the invention is not limited to the above embodiments, and the scope of the invention is within the scope of the invention, which is substantially equivalent to the embodiments of the present invention.

Claims (2)

1. An energy-saving type mixed baking device is characterized in that,
the method comprises the following steps:
a boiler part for receiving and burning fuel and heating fluid by using the heat of combustion;
a combustion chamber section for collecting and outputting exhaust gas discharged from the boiler section;
a drying section that receives the exhaust gas output from the combustion chamber section and dries the supplied biomass raw material;
a torrefaction section that receives the exhaust gas output from the combustion chamber section and torrefies the biomass raw material discharged from the drying section to produce a torrefied raw material;
a cooling unit for cooling the baking material discharged from the baking unit; and
a gas recirculation unit for supplying gas discharged from the drying unit and the roasting unit as combustion air of the boiler,
the boiler unit includes:
a boiler that heats fluid by burning fuel;
a selective catalytic device for removing nitrogen oxides contained in the exhaust gas discharged from the boiler;
a first air preheater for heating the exhaust gas discharged from the selective catalyst device;
an electric dust collector for removing fine dust contained in the exhaust gas discharged from the first air preheater; and
a desulfurizing device disposed at the rear end of the electric dust collector for removing sulfur oxides contained in the exhaust gas,
the drying part comprises:
a drum that is rotated by driving of a motor, and has a scraper provided therein for drying or baking the supplied biomass raw material;
an inflow module for guiding the supplied biomass raw material to the cylinder and supplying the exhaust gas supplied from the combustion chamber section to the cylinder; and
a discharge module for discharging the biomass raw material dried or baked in the drum,
the cylinder is divided into an A area arranged on the side of the inflow module and B areas to L areas which divide the rear end of the A area,
a screw type conveying scraper is provided in the area A, the conveying scraper is used for supplying the biomass raw material flowing in through the inflow module to the inner side of the cylinder and forcibly transferring the biomass raw material through the rotation of the cylinder,
a rising scraper is arranged from the B area to the L area, the rising scraper is used for mixing the biomass material, pulling the biomass material on the bottom surface of the cylinder and falling, and naturally moving the biomass material to the discharge module,
the rising blade includes:
a support plate vertically disposed inside the tube;
a curved plate provided at the front end of the support plate and arranged at a predetermined angle along the rotation direction of the cylinder; and
a reinforcing material for preventing the deformation of the support plate,
the energy-saving type hybrid roasting apparatus includes a sealing part including a first sealing part provided between the drum and the inflow module to prevent inflow of external air and a second sealing part provided between the drum and the exhaust module to prevent inflow of external air,
the drying part and the baking part are formed into the same structure,
the first seal portion includes:
a first bracket provided in an inflow pipe, the inflow module mixing an exhaust gas and a biomass material and flowing into the inflow pipe;
a first sealing material provided to the first bracket and contacting the flange of the inflow pipe;
a first blade sealing material provided on the first sealing material;
a second bracket extending from the first bracket and protruding toward the cylinder side;
a second sealing member provided on the second bracket so as to be in contact with the flange of the tube; and
a second leaf sealing material provided on the second sealing material,
the gas recirculation unit heats the gas discharged from the drying unit and the roasting unit by a second air preheater and supplies the heated gas to the boiler.
2. The energy-saving hybrid roasting apparatus according to claim 1, wherein the combustion chamber part collects one or more exhaust gases selected from the exhaust gas discharged from the selective catalyst device or the exhaust gas discharged from the first air preheater to supply the exhaust gases to the drying part and the roasting part.
CN201910199317.5A 2019-02-14 2019-03-15 Energy-saving mixed baking equipment Active CN111561813B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2019-0017380 2019-02-14
KR1020190017380A KR102005978B1 (en) 2019-02-14 2019-02-14 Energy saving type hybrid torrefaction facility

Publications (2)

Publication Number Publication Date
CN111561813A CN111561813A (en) 2020-08-21
CN111561813B true CN111561813B (en) 2022-04-08

Family

ID=68207585

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910199317.5A Active CN111561813B (en) 2019-02-14 2019-03-15 Energy-saving mixed baking equipment

Country Status (2)

Country Link
KR (1) KR102005978B1 (en)
CN (1) CN111561813B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111036072A (en) * 2019-12-13 2020-04-21 西安润川环保科技有限公司 Flue gas treatment system
CN111121080B (en) * 2019-12-23 2021-02-09 西安交通大学 System and method for carbon-based solid fuel chemical poly-generation coupling low NOx mixed combustion
KR102262101B1 (en) * 2020-10-27 2021-06-08 이진석 Hybrid system for drying and carbonizing organic matter
CN112984993B (en) * 2021-02-16 2022-12-06 乌海黄河亿腾色素炭黑有限公司 Production drying device cylinder for carbon black
CN114909887B (en) * 2022-05-27 2023-11-03 济宁市技师学院 Cereal starch stoving extraction element for polylactic acid preparation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101993700A (en) * 2009-08-19 2011-03-30 安德里兹技术资产管理有限公司 Method and system for the torrefaction of lignocellulosic material
KR101287184B1 (en) * 2012-12-17 2013-07-17 한국생산기술연구원 Biomass torrefaction device
CN103249818A (en) * 2010-10-08 2013-08-14 迪欧销售公司 Biomass torrefaction system and method
KR101619357B1 (en) * 2014-11-28 2016-05-11 삼양에코너지 주식회사 Drying and torrefaction system for lignocellulosic biomass
JP6388555B2 (en) * 2015-03-13 2018-09-12 三菱日立パワーシステムズ株式会社 Biomass gasification system and boiler equipment using the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9340741B2 (en) * 2009-09-09 2016-05-17 Gas Technology Institute Biomass torrefaction mill
KR101838982B1 (en) 2017-06-02 2018-04-27 주식회사에코코리아 Organic waste treatment system using drying carbonization method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101993700A (en) * 2009-08-19 2011-03-30 安德里兹技术资产管理有限公司 Method and system for the torrefaction of lignocellulosic material
CN103249818A (en) * 2010-10-08 2013-08-14 迪欧销售公司 Biomass torrefaction system and method
KR101287184B1 (en) * 2012-12-17 2013-07-17 한국생산기술연구원 Biomass torrefaction device
KR101619357B1 (en) * 2014-11-28 2016-05-11 삼양에코너지 주식회사 Drying and torrefaction system for lignocellulosic biomass
JP6388555B2 (en) * 2015-03-13 2018-09-12 三菱日立パワーシステムズ株式会社 Biomass gasification system and boiler equipment using the same

Also Published As

Publication number Publication date
CN111561813A (en) 2020-08-21
KR102005978B1 (en) 2019-10-01

Similar Documents

Publication Publication Date Title
CN111561813B (en) Energy-saving mixed baking equipment
CN1213129C (en) Method for gasifying organic materials and mixtures of materials
CN104164244A (en) Coal full-grain size grading pyrolysis and active coke preparation coupling process and system in coal gas circulating
CN111715070A (en) Ultra-clean discharge system and method for desulfurization and denitrification treatment of boiler flue gas
KR102429348B1 (en) Combustible material treatment method and treatment device
CA2568029C (en) Improved gasifier
CN113698964B (en) Fluidized bed and biomass reaction furnace
CN107721112B (en) Municipal sludge drying pyrolysis gasification self-sustaining incineration system
CN218627495U (en) Coal gasification fine slag quality improvement recycling system
CN217535480U (en) Active carbon powder granulation desulfurization system
CN113074363B (en) Device and method for realizing clean combustion of solid fuel
CN113048482B (en) Garbage pyrolysis and gasification system device with drying function and garbage pyrolysis and gasification method
CN211999417U (en) Sludge drying machine with transportation function
CN209558349U (en) The device that a kind of flue gas harmless treatment and thermal energy efficiently utilize
CN102728218B (en) Integrated coal-electricity energy utilization system
CN105987384A (en) Garbage treatment complete equipment
CN104893746A (en) Carbocoal heat recycling system and recycling process
CN105987386A (en) Circulation water cooling heat exchange system in garbage treatment complete equipment
CN220485514U (en) Sludge drying and carbonizing system
CN103244948A (en) Hydrogen-assisted combustion coal gasification boiler
CN215102010U (en) Active carbon production system
CN115895729B (en) Household garbage coupling pulverized coal boiler power generation system
CN220143035U (en) Cement kiln denitration furnace device for treating solid waste of replaceable raw materials
CN214991325U (en) Fine coal powder recycling system for fine coal pyrolysis
CN213977544U (en) Direct-fired power generation system based on biomass pyrolysis charcoal making

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant