CN106675682A - Process for preparing biomass briquette coal by dehydrating and upgrading lignite - Google Patents

Process for preparing biomass briquette coal by dehydrating and upgrading lignite Download PDF

Info

Publication number
CN106675682A
CN106675682A CN201610444935.8A CN201610444935A CN106675682A CN 106675682 A CN106675682 A CN 106675682A CN 201610444935 A CN201610444935 A CN 201610444935A CN 106675682 A CN106675682 A CN 106675682A
Authority
CN
China
Prior art keywords
biomass
brown coal
compound
coal
air
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.)
Granted
Application number
CN201610444935.8A
Other languages
Chinese (zh)
Other versions
CN106675682B (en
Inventor
张鹏德
桂夏辉
张才德
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.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
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 China University of Mining and Technology CUMT filed Critical China University of Mining and Technology CUMT
Priority to CN201610444935.8A priority Critical patent/CN106675682B/en
Publication of CN106675682A publication Critical patent/CN106675682A/en
Application granted granted Critical
Publication of CN106675682B publication Critical patent/CN106675682B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • 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
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C10L5/105—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with a mixture of organic and inorganic binders
    • 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
    • C10L5/34—Other details of the shaped fuels, e.g. briquettes
    • C10L5/36—Shape
    • C10L5/363—Pellets or granulates
    • 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
    • C10L5/442—Wood or forestry waste
    • 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
    • C10L5/445—Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
    • 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
    • C10L5/447—Carbonized vegetable substances, e.g. charcoal, or produced by hydrothermal carbonization of biomass
    • 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
    • C10L2290/24—Mixing, stirring of fuel components
    • 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
    • C10L2290/28—Cutting, disintegrating, shredding or grinding
    • 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
    • C10L2290/32—Molding or moulds
    • 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

Abstract

The invention relates to a process for preparing biomass briquette coal by dehydrating and upgrading lignite. The preparation process comprises the following flows: raw material crushing operation: crushing the lignite and biomass; first-stage material mixing operation: performing first-stage mixing on the lignite, the biomass and efficient composite adhesive; airflow conveying operation: performing second-stage mixing and first-stage drying by using hot airflow; separating and stirring operation: performing third-stage mixing by using cyclone, separating wet air and spraying diesel; rotary drum drying operation: performing four-stage mixing and second-stage drying by using a rotary drum; forming operation: performing pressing formation and packaging. By the process for preparing the biomass briquette coal, multi-stage drying enables that the dehydrating and upgrading effects of the lignite are better and the treatment cost is reduced, and multi-stage mixing enables the raw materials to be mixed uniformly; the prepared biomass briquette coal has the characteristics of high strength, high water resistance, low transportation cost, high gasification efficiency and high combustion characteristic.

Description

A kind of brown coal dehydration upgrading prepares biomass coal technique
Technical field
The present invention relates to brown coal upgrading and Biotype coal preparation field, more particularly to a kind of brown coal dehydration upgrading preparation biology Matter briquetting process.
Background technology
Brown coal are fossil resources that is abundant in the world and being widely present, and China's lignite resource reserves quite enrich, third time National charcoal resource investigation shows that national explored brown coal reserves is high 1311.42 hundred million tons, accounts for national coal reserves 13%.But it is but subject to itself high-moisture, high ash, low heat value, low ash smelting point, heat stability difference and easily air slaking spontaneous combustion The features such as impact, limit its use range and utilization ways.And the extensive brown coal of tradition utilize (generating) mode eventually Threaten its limited Resource Properties, also can adverse condition, therefore, brown coal must carry out upgrading using before to it.
And biomass coal combines non-renewable fossil energy with reproducible biomass energy, with ignition point Low, burning velocity is fast, do not smolder, can consolidate the advantages of sulfur, abundant burning, low ash content carbon and not slagging scorification.Biomass and coal Mixed combustion, can alleviate the Energy Situation of current high-quality coal shortage of resources, while biomass resource can also be made full use of Advantage, reduces the discharge of coal CO2, NOx and SOx in combustion.Simultaneously mixing biomass can be reduced directly by burning Fossil fuel and the carbon dioxide, the discharge capacity of sulfur and nitrogen oxides that produce, finally realize the height of brown coal and biomass Effect clean utilization, but there is also binding agent and select undesirable, raw material the problems such as can not uniformly mix.Due to biomass coal Synergism in the energy-conserving and environment-protective advantage, heat stability advantage and the gasification that are had, with life prepared by upgraded brown coal Material moulded coal is also used as gasified raw material while can realizing that Coal Cleanization is utilized, and realizes the exploitation profit of higher value With.
The content of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of dehydration upgrading of brown coal prepares biomass coal technique, to Solve the problems, such as that existing brown coal dewatering efficiency is low, production cost is high, Biomass Energy Utilization rate is low, not environmentally.
The purpose of the present invention is mainly achieved through the following technical solutions：
A kind of brown coal dehydration upgrading prepares biomass coal technique, and the preparation technology flow process is as follows：
S1, raw material crushing operation：Brown coal are carried out with broken decomposition, biomass are carried out with broken decomposition；
S2, one-level batch mixing operation：Brown coal granule, biological particles are mixed with efficient compound binding agent, by compound Feeding feed screw carries out one-level mixing and outward conveys；
S3, air-flow conveying operation：The dry air for being heated to 200 DEG C is made using air compressor in airflow pipeline Air-flow is formed, air-flow promotion carries out two grades in airflow pipeline and mixes and convey from the compound of feed screw, together 200 DEG C of dry airs of Shi Liyong carry out one-level drying and dehydrating to compound；
S4, separation stirring operation：Acted on to from the airflow pipeline using the whirlwind that air-flow is produced using whirlwind bucket The compound that conveying comes carries out three-level mixing, and air is separated with compound, humid air is discharged, in charging aperture with mixed material The ratio of quality 1%-2% sprays diesel oil by nozzle；
S5, level Four mixture operation：Revolving drier inclination angle is made for 6-8 °, by the mixed material of solid mixture and oil from turning Cylinder higher end is passed through revolving drier, using the effect of revolving drier cylinder inwall flight, material is taken up and falls this mistake Cheng Shixian carries out level Four mixing to compound, while promoting material to move to discharging opening；
S6, material secondary drying operation：Carried out and counter-current operation pair using hot-air or flue gas in revolving drier Compound carries out secondary drying dehydration, when drying to mixture moisture is less than 3%, is outwards conveyed by band conveyor；
S7, operations for forming：Using roller press type forming machine to from revolving drier conveying come compound carry out operations for forming, Sieve corresponding with mould size is installed at products export, the product utilization conveyer belt that size meets is delivered to packer and entered Row packaging, putting into rotating cylinder after the substandard product leaked down from sieve is broken carries out reworking.
Biomass are forest tree castoff of the moisture less than 25%, agricultural crop straw and animal wastes etc.；Biological particles grain Footpath is less than or equal to 7mm, crushes biomass using scissor-type crusher and forms.
Brown coal grain diameter is 5mm, and grinding process is broken by brown coal crushing by two ends using reversible counter beating hammer type disintegrator Form.
By mass percentage proportioning is the raw material of efficient compound binding agent：Biomass straw 12%, concentration is 1% hydrogen Sodium hydroxide solution 100%, calcium chloride 0.5%, calcium hydroxide 0.7%, above mass percent is molten relative to sodium hydroxide The mass percent of liquid.
The preparation method of efficient compound binding agent is：Biomass straw is broken into into the granule that particle diameter is 3-7mm, to dense Spend to add the biomass straw granule after crushing in 1% sodium hydroxide solution, and add calcium chloride and calcium hydroxide, at 76 DEG C Under conditions of heat the sticky mass that is filtrated to get after 2h, as efficient compound binding agent.
In compound, brown coal granule is more than or equal to 7 with the mass ratio of biological particles:3, less than or equal to 8:2；Compound In, efficient compound binding agent accounts for the 10% of gross mass.
In revolving drier, air velocity is 1.2-2.4m/s, and rotating cylinder rotating speed is 5r/min.
Operations for forming process, roller press type curing formation machine is passed through in 25- by the compound after being sufficiently stirred for using conveyer belt Cold moudling under 30MPa.
The present invention has the beneficial effect that：
With reference to brown coal dehydration process for upgrading, compound binding agent preparation technology, biomass coal preparation technology and biomass Type coal gasification advantage and the dehydration upgrading of independent research a set of brown coal prepare the production technology of biomass coal.
Propose that brown coal air-flow transportation section is dried and two sections of combination drying section on the basis of existing brown coal dehydration process for upgrading Dehydration process for upgrading so that more preferably, processing cost is reduced dehydration upgrading effect；Raw material cannot be effectively uniform during development of briquette The limiting factor of always one restriction biomass coal large-scale production of mixing, to overcome existing biomass coal each in preparing The problem that component can not effectively mix, this technique is mixed by each component raw material through spiral charging, air-flow conveying, whirlwind bucket material Close, batch mixing stirs four sections of mixing so that the additive component such as raw material mix homogeneously, binding agent is uniformly dispersed, and briquet quality is more preferable； Efficient compound binding agent is independent research preparation, and bond effect is good, ash is low, water resistance is good, price is low, captured sulfur result By force.
Other features and advantages of the present invention will be illustrated in the following description, and Partial Feature and advantage are from explanation Become apparent in book, or understood by implementing the present invention.The purpose of the present invention and other advantages can be by being write Description, claims and accompanying drawing in specifically noted structure realizing and obtain.
Description of the drawings
Fig. 1 is preparation technology flow chart involved in the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings specifically describing the preferred embodiments of the present invention, wherein, accompanying drawing constitutes the application part, and It is used to together with embodiments of the present invention explain the principle of the present invention.
Raw material is chosen：The present invention is mainly cattle and sheep feces and biomass by choosing used biomass to feedstock optimization Straw；
The brown coal that the present invention chooses are generally high water content brown coal；
Embodiment one：
A kind of brown coal dehydration upgrading prepares biomass coal technique, and biomass coal step is prepared such as using the preparation technology Under：
S1, raw material crushing operation：The brown coal that moisture is 30% are chosen, using reversible counter beating hammer type disintegrator two ends are passed through Broken grinding process decomposes brown coal crushing, and it is 5mm to crush brown coal grain diameter after decomposing；Moisture is less than using scissor-type crusher 25% corn straw carries out broken decomposition with cattle and sheep excrement mixture, and it is 7mm to crush its grain diameter after decomposing.
S2, one-level batch mixing operation：By brown coal granule, biological particles according to mass ratio 8:2 mixing, decompound quality 10% efficient compound binding agent mixing, compound is fed into feed screw carries out one-level mixing and outward conveys； It is another that wheat stalk is crushed to into particle diameter for after 7mm, in being added to concentration as 1% sodium hydroxide solution with 12% mass ratio, and Add 0.5% calcium chloride, 0.7% calcium hydroxide, the sticky mass being filtrated to get after heating 2h under conditions of 76 DEG C, its Middle mass percent is the mass percent relative to sodium hydroxide solution.
S3, air-flow conveying operation：The dry air for being heated to 200 DEG C is made using air compressor in airflow pipeline Air-flow is formed, the air-flow promotion carries out two grades in airflow pipeline and mixes and defeated from the compound of feed screw Send, while carrying out one-level drying and dehydrating to compound using 200 DEG C of dry airs.
S4, separation stirring operation：Acted on to from the airflow pipeline using the whirlwind that air-flow is produced using whirlwind bucket The compound that conveying comes carries out three-level mixing, and air is separated with compound, humid air is discharged, in charging aperture with mixed material The ratio of quality 2% sprays diesel oil by nozzle.
S5, level Four mixture operation：Revolving drier inclination angle is made for 6 °, by solid mixture with oily mixed material from rotating cylinder Higher end is passed through revolving drier, using the effect of revolving drier cylinder inwall flight, material is taken up and falls this process Realization carries out level Four mixing to compound, while promoting material to move to discharging opening, rotating cylinder rotating speed is 5r/min in the step..
S6, material secondary drying operation：Carried out and counter-current operation pair using hot-air or flue gas in revolving drier Compound carries out secondary drying dehydration, when drying to mixture moisture is less than 3%, is outwards conveyed by band conveyor, the step Air velocity is 2m/s in rapid.
S7, operations for forming：Using roller press type forming machine to from revolving drier conveying come compound carry out operations for forming, Sieve corresponding with mould size is installed at products export, the product utilization conveyer belt that size meets is delivered to packer and entered Row packaging, putting into rotating cylinder after the substandard product leaked down from sieve is broken carries out reworking.
Product is ellipsoid solid fuel, and average diameter 35mm, ratio of briquetting is more than 96%, and comprcssive strength is 668.4N/ Individual, fall strength of briquette is 95.6%, and moisture is less than 2%.
Embodiment two：
S1, raw material crushing operation：The brown coal that moisture is 30% are chosen, using reversible counter beating hammer type disintegrator two ends are passed through Broken grinding process decomposes brown coal crushing, and it is 5mm to crush brown coal grain diameter after decomposing；Moisture is less than using scissor-type crusher 25% corn straw carries out broken decomposition with cattle and sheep excrement mixture, and it is 7mm to crush its grain diameter after decomposing.
S2, one-level batch mixing operation：By brown coal granule, biological particles according to mass ratio 7:3 mixing, decompound quality 10% efficient compound binding agent mixing, compound is fed into feed screw carries out one-level mixing and outward conveys； It is another that wheat stalk is crushed to into particle diameter for after 7mm, in being added to concentration as 1% sodium hydroxide solution with 12% mass ratio, and Add 0.5% calcium chloride, 0.7% calcium hydroxide, the sticky mass being filtrated to get after heating 2h under conditions of 76 DEG C, its Middle mass percent is the mass percent relative to sodium hydroxide solution.
S3, air-flow conveying operation：The dry air for being heated to 200 DEG C is made using air compressor in airflow pipeline Air-flow is formed, the air-flow promotion carries out two grades in airflow pipeline and mixes and defeated from the compound of feed screw Send, while carrying out one-level drying and dehydrating to compound using 200 DEG C of dry airs.
S4, separation stirring operation：Acted on to from the airflow pipeline using the whirlwind that air-flow is produced using whirlwind bucket The compound that conveying comes carries out three-level mixing, and air is separated with compound, humid air is discharged, in charging aperture with mixed material The ratio of quality 1% sprays diesel oil by nozzle.
S5, level Four mixture operation：Revolving drier inclination angle is made for 8 °, by solid mixture with oily mixed material from rotating cylinder Higher end is passed through revolving drier, using the effect of revolving drier cylinder inwall flight, material is taken up and falls this process Realization carries out level Four mixing to compound, while promoting material to move to discharging opening, rotating cylinder rotating speed is 5r/min in the step..
S6, material secondary drying operation：Carried out and counter-current operation pair using hot-air or flue gas in revolving drier Compound carries out secondary drying dehydration, when drying to mixture moisture is less than 3%, is outwards conveyed by band conveyor, the step Air velocity is 2m/s in rapid.
S7, operations for forming：Using roller press type forming machine to from revolving drier conveying come compound carry out operations for forming, Sieve corresponding with mould size is installed at products export, the product utilization conveyer belt that size meets is delivered to packer and entered Row packaging, putting into rotating cylinder after the substandard product leaked down from sieve is broken carries out reworking.
Product is globular solids fuel, and average diameter 35mm, ratio of briquetting is more than 95%, and comprcssive strength is 669.6N/, Fall strength of briquette is 96.2%, and moisture is less than 2%.
In sum, embodiments provide a kind of brown coal dehydration upgrading and prepare biomass coal technique, with reference to brown Coal dewatering process for upgrading, compound binding agent preparation technology, biomass coal preparation technology and biomass type coal gasification advantage and The a set of brown coal dehydration upgrading of independent research prepares the production technology of biomass coal.
Propose that brown coal air-flow transportation section is dried and two sections of combination drying section on the basis of existing brown coal dehydration process for upgrading Dehydration process for upgrading so that more preferably, processing cost is reduced dehydration upgrading effect；Raw material cannot be effectively uniform during development of briquette The limiting factor of always one restriction biomass coal large-scale production of mixing, to overcome existing biomass coal each in preparing The problem that component can not effectively mix, this technique is mixed by each component raw material through spiral charging, air-flow conveying, whirlwind bucket material Close, batch mixing stirs four sections of mixing so that the additive component such as raw material mix homogeneously, binding agent is uniformly dispersed, and briquet quality is more preferable； Efficient compound binding agent is independent research preparation, and bond effect is good, ash is low, water resistance is good, price is low, captured sulfur result By force.
The biomass coal of preparation has that intensity height, good waterproof performance, cost of transportation are low, gasification efficiency is high, combustion characteristics good Deng many advantages, comprcssive strength average out to 668.4N/, fall strength of briquette is averagely more than 95.2%；Product is mainly spherical or block Shape fuel, average diameter 35mm, up to more than 95%, moisture is up to less than 2% for ratio of briquetting.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, Any those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, All should be included within the scope of the present invention.

Claims (10)

1. a kind of brown coal dehydration upgrading prepares biomass coal technique, it is characterised in that the preparation technology flow process is as follows：
S1, raw material crushing operation：Brown coal are carried out with broken decomposition, biomass are carried out with broken decomposition；
S2, one-level mixture operation：Brown coal granule, biological particles are mixed with efficient compound binding agent, compound is fed Feed screw carries out one-level mixing and outward conveys；
S3, air-flow conveying operation：The dry air for being heated to 200 DEG C is set to be formed in airflow pipeline using air compressor Air-flow, the air-flow promotion carries out two grades in airflow pipeline and mixes and convey from the compound of feed screw, together 200 DEG C of dry airs of Shi Liyong carry out one-level drying and dehydrating to compound；
S4, separation stirring operation：Acted on to from airflow pipeline conveying using the whirlwind that air-flow is produced using cyclone cylinder The compound for coming carries out three-level mixing, and air is separated with compound, discharges humid air, and in charging aperture high pressure nozzle root is utilized Diesel oil is sprayed according to the ratio of total quality of material 1%-2%, diesel oil is mixed with solid mixture material；
S5, level Four mixture operation：Revolving drier inclination angle is made for 6-8 °, by the material in cyclone cylinder out from rotating cylinder higher end Revolving drier is passed through, using the effect of revolving drier cylinder inwall flight, material is taken up and is fallen this process realization to mixed Closing material carries out level Four mixing, while promoting material to move to discharging opening；
S6, secondary drying dewatering operation：In revolving drier using hot-air or flue gas carry out and counter-current operation to mixing Material carries out secondary drying dehydration, when drying to mixture moisture is less than 3%, is outwards conveyed by band conveyor；
S7, operations for forming：Using roller press type forming machine to from revolving drier conveying come compound carry out operations for forming, produce Sieve corresponding with mould size is installed in product exit, and the product utilization conveyer belt that size meets is delivered to packer and wrapped Dress, putting into rotating cylinder after the substandard product leaked down from sieve is broken carries out reworking.
2. brown coal dehydration upgrading according to claim 1 prepares biomass coal technique, it is characterised in that the biomass It is one or more in forest tree castoff of the moisture less than 25%, agricultural crop straw and animal wastes；The biological particles Particle diameter is less than or equal to 7mm, crushes the biomass using scissor-type crusher and forms.
3. brown coal dehydration upgrading according to claim 1 prepares biomass coal technique, it is characterised in that the brown coal Grain particle diameter is 5mm, is formed the brown coal crushing by the broken grinding process in two ends using reversible counter beating hammer type disintegrator.
4. brown coal dehydration upgrading according to claim 1 prepares biomass coal technique, it is characterised in that described efficiently multiple By mass percentage proportioning is the raw material of mould assembly binding agent：Biomass straw 10-15%, concentration are 1% sodium hydroxide solution 100%th, calcium chloride 0.1-1%, calcium hydroxide 0.5-1%, above mass percent is the matter relative to sodium hydroxide solution Amount percent.
5. brown coal dehydration upgrading according to claim 4 prepares biomass coal technique, it is characterised in that described efficiently multiple By mass percentage proportioning is the raw material of mould assembly binding agent：Biomass straw 12%, concentration is 1% sodium hydroxide solution 100%th, calcium chloride 0.5%, calcium hydroxide 0.7%, above mass percent is the quality hundred relative to sodium hydroxide solution Fraction.
6. brown coal dehydration upgrading according to claim 4 prepares biomass coal technique, it is characterised in that described efficiently multiple By mass percentage proportioning is the raw material of mould assembly binding agent：Biomass straw 13%, concentration is 1% sodium hydroxide solution 100%th, calcium chloride 0.7%, calcium hydroxide 0.9%, above mass percent is the quality hundred relative to sodium hydroxide solution Fraction.
7. brown coal dehydration upgrading according to claim 4 prepares biomass coal technique, it is characterised in that described efficiently multiple The preparation method of mould assembly binding agent is：Biomass straw is broken into into the granule that particle diameter is 3-7mm, is 1% hydroxide to concentration Add the biomass straw granule after crushing in sodium solution, and add calcium chloride and calcium hydroxide, heat under conditions of 76 DEG C The sticky mass being filtrated to get after 2h, as efficient compound binding agent.
8. brown coal dehydration upgrading according to claim 1 prepares biomass coal technique, it is characterised in that the compound In, brown coal granule is more than or equal to 7 with the mass ratio of biological particles:3, less than or equal to 8:2；In the compound, high efficiency composition Type binding agent accounts for the 10% of gross mass.
9. brown coal dehydration upgrading according to claim 1 prepares biomass coal technique, it is characterised in that the rotating cylinder is done In dry device, air velocity is 1.2-2.4m/s, and rotating cylinder rotating speed is 5r/min.
10. according to claim 1-9 brown coal dehydration upgrading prepare biomass coal technique, it is characterised in that it is described into Type operation process, is passed through the compound after being sufficiently stirred for roller press type curing formation machine and colds pressing under 25-30MPa using conveyer belt Molding.
CN201610444935.8A 2016-06-20 2016-06-20 A kind of dehydration upgrading of lignite prepares biomass coal technique Active CN106675682B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610444935.8A CN106675682B (en) 2016-06-20 2016-06-20 A kind of dehydration upgrading of lignite prepares biomass coal technique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610444935.8A CN106675682B (en) 2016-06-20 2016-06-20 A kind of dehydration upgrading of lignite prepares biomass coal technique

Publications (2)

Publication Number Publication Date
CN106675682A true CN106675682A (en) 2017-05-17
CN106675682B CN106675682B (en) 2019-07-02

Family

ID=58839683

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610444935.8A Active CN106675682B (en) 2016-06-20 2016-06-20 A kind of dehydration upgrading of lignite prepares biomass coal technique

Country Status (1)

Country Link
CN (1) CN106675682B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107384495A (en) * 2017-08-23 2017-11-24 中国矿业大学 A kind of biomass liquefying prepares joint production process with biomass coal
CN108085081A (en) * 2017-12-19 2018-05-29 中国矿业大学 A kind of coal slime is the biomass coal preparation process of raw material
CN108148645A (en) * 2017-12-19 2018-06-12 中国矿业大学 A kind of fresh straw makees the clean moulded coal preparation method of binding agent
CN110540885A (en) * 2019-09-11 2019-12-06 山西领君重工机械设备有限公司 Drying-free forming method for molded coal
CN111215253A (en) * 2020-01-22 2020-06-02 中国矿业大学 Low-rank coal flotation reagent and flotation method
CN116218579A (en) * 2023-04-24 2023-06-06 羚羊环保科技有限公司 Desulfurization and dehydration production device for high-sulfur high-moisture lignite

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101519282A (en) * 2008-02-27 2009-09-02 尹小林 Novel technology of vertical kiln for manufacturing cement clinker by utilizing dry acetylene sludge two-stage batching
CN102703153A (en) * 2012-07-02 2012-10-03 昆明理工大学 Preparation method of biomass moulding fuel
CN103045321A (en) * 2012-12-28 2013-04-17 山东博润工业技术股份有限公司 Method for drying and upgrading lignite
CN105327765A (en) * 2015-12-10 2016-02-17 惠生工程（中国）有限公司 High-moisture low-rank coal pulverizing and water recycling system and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101519282A (en) * 2008-02-27 2009-09-02 尹小林 Novel technology of vertical kiln for manufacturing cement clinker by utilizing dry acetylene sludge two-stage batching
CN102703153A (en) * 2012-07-02 2012-10-03 昆明理工大学 Preparation method of biomass moulding fuel
CN103045321A (en) * 2012-12-28 2013-04-17 山东博润工业技术股份有限公司 Method for drying and upgrading lignite
CN105327765A (en) * 2015-12-10 2016-02-17 惠生工程（中国）有限公司 High-moisture low-rank coal pulverizing and water recycling system and method

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
伏隆佐夫著，殷宗泰、彭成中译: "《化工干燥》", 30 November 1956, 化学工业出版社 *
吕一波等: "《动力煤燃前加工》", 31 August 2007 *
李国学: "《固体废物处理与资源化》", 31 August 2005, 中国环境科学出版社 *
程建光等: "氯化钙在型煤燃烧过程中固硫作用的研究", 《煤矿环境保护》 *
路广军等: "生物质秸秆作为型煤粘结剂的研究", 《节能技术》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107384495A (en) * 2017-08-23 2017-11-24 中国矿业大学 A kind of biomass liquefying prepares joint production process with biomass coal
CN108085081A (en) * 2017-12-19 2018-05-29 中国矿业大学 A kind of coal slime is the biomass coal preparation process of raw material
CN108148645A (en) * 2017-12-19 2018-06-12 中国矿业大学 A kind of fresh straw makees the clean moulded coal preparation method of binding agent
CN108085081B (en) * 2017-12-19 2021-01-26 中国矿业大学 Preparation process of biomass briquette by taking coal slime as raw material
CN110540885A (en) * 2019-09-11 2019-12-06 山西领君重工机械设备有限公司 Drying-free forming method for molded coal
CN111215253A (en) * 2020-01-22 2020-06-02 中国矿业大学 Low-rank coal flotation reagent and flotation method
CN116218579A (en) * 2023-04-24 2023-06-06 羚羊环保科技有限公司 Desulfurization and dehydration production device for high-sulfur high-moisture lignite

Also Published As

Publication number Publication date
CN106675682B (en) 2019-07-02

Similar Documents

Publication Publication Date Title
CN106675682A (en) Process for preparing biomass briquette coal by dehydrating and upgrading lignite
US8753410B2 (en) Method for producing fuel briquettes from high moisture fine coal or blends of high moisture fine coal and biomass
CN103450962B (en) Production technique of pure cedar biomass granular fuel
KR101119347B1 (en) Briquetting process
CN102666880B (en) Method for using biomass in blast furnace
CN101440323B (en) Drying and moulding integrated process for low rank coal
US8551549B2 (en) Process using agriculture residue biomass for producing feed pellets
CN101979477A (en) Biomass moulding fuel rod and process for producing same
CN104531256A (en) Environment-friendly biomass pellet fuel production method
CN107365601B (en) A kind of Biomass Gasification ＆ Power Generation method using agriculture and forestry organic waste material
CN105695030A (en) High-efficiency energy-saving solid mixed fuel moulding technology
CN105062601A (en) Preparation method and system for green carbon containing biomass
CN203928676U (en) Roller dryer and comprise its living beings wood pellet fuel production equipment
CN211394390U (en) Production system of biomass granular fuel
JP2011140610A (en) Method for producing composite fuel
CN103450961B (en) Preparation technique of pure cedar biomass granular fuel
CN108085081B (en) Preparation process of biomass briquette by taking coal slime as raw material
CN104927964B (en) A kind of biomass molding fuel and its production method and production system
CN112795415A (en) Formulations and methods
CN108913259A (en) The multiple-effect of straw biomass fuel utilizes manufacturing method
CN206970557U (en) A kind of equipment for preparing biomass granule fuel
CN206832029U (en) The equipment that cement kiln head is burnt using biomass fuel catalysis
CN108913258A (en) A kind of manufacture system of straw biomass fuel
CN202989087U (en) Continuous production system of biomass fuel block
CN203474750U (en) System for producing cedarwood biomass granular fuel

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