CN106766828A - Brown coal drying and upgrading and Water Sproading is dried using technique and its system - Google Patents

Brown coal drying and upgrading and Water Sproading is dried using technique and its system Download PDF

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Publication number
CN106766828A
CN106766828A CN201610996706.7A CN201610996706A CN106766828A CN 106766828 A CN106766828 A CN 106766828A CN 201610996706 A CN201610996706 A CN 201610996706A CN 106766828 A CN106766828 A CN 106766828A
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CN
China
Prior art keywords
lignite
upgrading
brown coal
preheater
heating tube
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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.)
Pending
Application number
CN201610996706.7A
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Chinese (zh)
Inventor
陈风敬
朱全红
卢文新
夏吴
徐建民
张大洲
王志刚
商宽祥
张琦
刘佳
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China Wuhuan Engineering Co Ltd
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China Wuhuan Engineering Co Ltd
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Publication date
Application filed by China Wuhuan Engineering Co Ltd filed Critical China Wuhuan Engineering Co Ltd
Priority to CN201610996706.7A priority Critical patent/CN106766828A/en
Publication of CN106766828A publication Critical patent/CN106766828A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B20/00Combinations of machines or apparatus covered by two or more of groups F26B9/00 - F26B19/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/12Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/16Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials passing down a heated surface, e.g. fluid-heated closed ducts or other heating elements in contact with the moving stack of material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00Heating arrangements
    • F26B23/10Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/005Treatment of dryer exhaust gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06Chambers, containers, or receptacles
    • F26B25/08Parts thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00Drying solid materials or objects by processes involving the application of heat
    • F26B3/18Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
    • F26B3/22Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source and the materials or objects to be dried being in relative motion, e.g. of vibration
    • F26B3/26Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source and the materials or objects to be dried being in relative motion, e.g. of vibration the movement being performed by gravity
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The present invention relates to a kind of brown coal drying and upgrading and dry Water Sproading and utilize technique, solve the problems, such as steam heat energy and water resource waste that existing brown coal drying and upgrading evaporates.Method includes the steam for obtaining moisture-free coal and evaporating after being dried in lignite feeding drier, the lignite first to be sent into be re-fed into after preheating in preheater and dry in drier, it is then exhausted from after lignite indirect heat exchange in feeding preheater after the steam removing dust device dedusting drawn in the drier, the condensate liquid of generation sends into water treatment system treatment after collecting.Present invention process is simple, can effectively reclaim dry steam heat energy and water resource, equipment investment and operating cost are low, safe and reliable.

Description

Brown coal drying and upgrading and Water Sproading is dried using technique and its system
Technical field
The present invention relates to a kind of brown coal drying technique and system, specifically a kind of brown coal drying and upgrading and dry water return Receive and utilize technique and its system.
Background technology
In traditional brown coal drying and upgrading technique, the lignite of high-moisture is sent directly into drier and is dried, therebetween A large amount of more than 100 DEG C steam can be produced, these steam are difficult to back because temperature is high, complicated, the problems such as reclaim high energy consumption Receive and utilize, can only directly be vented, lost the water resource of preciousness, while heat (including the latent heat carried in also lost steam And sensible heat), for some regional lignite, drying containing a small amount of pollutant (COD is higher) in water, directly emptying is also resulted in Water pollution and atmosphere pollution.Such as the method for the brown coal drying and upgrading of application number 201210583274.9, disclose carries out two by lignite Secondary drying, but it is not related to the processing method of dry steam.Synchronization for the heat energy and water of this part steam so far is returned Receive also without preferable method.
The content of the invention
The invention aims to solve above-mentioned technical problem, there is provided a kind of process is simple, can effectively reclaim dry steaming Low, the safe and reliable brown coal drying and upgrading of the heat energy and water resource of vapour, equipment investment and operating cost and dry Water Sproading utilization Technique.
The present invention also provides that a kind of system for above-mentioned technique is extremely simple, is easy to transformation, the coal that security reliability is good Drying and upgrading and dry Water Sproading and utilize system.
Technical scheme includes the steam for obtaining moisture-free coal and evaporating after being dried in lignite feeding drier, the lignite It is re-fed into being dried in drier after first being preheated in feeding preheater, is sent into after the steam removing dust device dedusting that the drier is drawn It is then exhausted from after lignite indirect heat exchange in preheater, the condensate liquid of generation sends into water treatment system treatment after collecting.
The lower housing section of the preheater is provided with lower heating tube bundle, and epimere is provided with heating tube bundle, and the steam is first sent into With lignite indirect heat exchange in the lower heating tube bundle of preheater, then after isolating condensate liquid through gas-liquid separation chamberHeated in inflow It is vented after tube bank and the further indirect heat exchange of lignite;Gas-liquid separation chamberThe condensate liquid feeding water treatment system treatment isolated.
Into the lignite 30~50wt% of water content before preheater, the lignite water content for going out preheater declines a 10wt% left sides It is right.
The stage casing of the device preheater is provided with baffle plate, and the steam produced in lignite warm rises to condensation shape at baffle plate Into condensed water, the condensed water flows into dirt liquid collection separation chamber along baffle plate carries out dirt liquid carries out sedimentation separation, and dirt liquid is collected and separated Discharge mud, top overflow clarified solution, the clarified solution feeding water treatment system treatment in room bottom.
Present system includes drier and preheater, and the preheater includes housing, and the case top sets charging aperture, Bottom sets out material mouth, and top sets air-vent, bottom and sets air inlet, and epimere is provided with the upper heating tube of lateral arrangement in the housing Beam, hypomere is provided with the lower heating tube bundle of lateral arrangement, and the air inlet is through lower heating tube bundle, gas-liquid separation chamber, upper heating tube bundle Connected with air-vent;The charging aperture of the drier is connected with the discharging opening of preheater, and the moisture outlet of the drier is through removing Dirt device is connected with the air inlet of drier, and the condensation-water drain of the gas-liquid separation chamber is connected with water treatment system.
Stage casing also sets the multi-row staggered baffle plate being evenly arranged in the housing, and one end of the baffle plate is collected with dirt liquid and separated Room connects, and baffle plate collects separation chamber direction and has downward level inclination along dirt liquid, and the dirt liquid collects the clarification of separation chamber Liquid outlet is connected with water treatment system.
The section of the plate washer is inverted V-shaped, and the angle of its inverted V-shaped is 60~140 °.
The level inclination of the baffle plate is 0.36~1.62 °.
Steam cloth air chamber is provided with the air inlet;Fixed gas collecting chamber is provided with the air-vent.
The upper and lower heating tube bundle is downward-sloping along gas flow direction, and its level inclination is 0.36~1.62 °.
For problem present in background technology, inventor has connected a preheater before drier, is entering lignite To enter first preheated in preheater before drying machine, and the heat energy then steam from drying machine, will the steam drawn of drying machine introduce Indirectly heat is carried out in preheater to lignite, on the one hand recyclable heat energy, on the other hand reclaims the condensate liquid that moisture condensation is obtained, The condensate liquid of recovery can play the purpose of saving water resource after treatment as plant circulation cold water moisturizing.Meanwhile, inventor couple Preheater has been also carried out improving, and changes route of the aqueous vapor in preheater, at utmost reclaims condensate liquid, improves equipment Service life, reduce block the problems such as occur, it is specific as follows:(1) upper and lower heating tube bundle is set, steam is introduced into heating tube Indirect preheating is carried out to the lignite fallen in housing in beam, the condensate liquid produced in lower heating tube bundle warm is in gas-liquid separation Interior is separated and collected, and the condensate liquid of the generation in upper heating tube bundle warm is separated and collected in fixed gas collecting chamber, is realized The recovery of the heat energy and water resource of steam, separates the steam after condensate liquid and goes successively to heating tube bundle and further changed with lignite Heat;(2) baffle plate is set between upper and lower heating tube bundle, and the baffle plate that the steam that lignite is volatilized rises to multi-layer intercrossed arrangement enters And condense, condensate liquid collects inflow dirt liquid and collects separation chamber along this baffle plate, pre-dried condensate liquid is recycled profit With, water source money is further reclaimed, mitigate environmental pollution.(3) gas-liquid separation chamber and dirt liquid collect the condensate liquid collected in separation chamber Can send into after water treatment system treatment is further processed and reclaim, synchronously realize drying the condensation in steam using a preheater The recovery of the condensate liquid in liquid and lignite warm, achieves many things at one stroke, with significant technique effect.
The baffle plate is preferably inverted " v ", multi-layer intercrossed arrangement, it is ensured that lignite particle can be passed through without blocking up Material.All baffle plates have downward inclination angle (preferably 0.36~1.62 °) along separation chamber directions are collected, it is ensured that the drop of condensation can be with Smoothly collect and flow into collection chamber receiving condensate.The scope of v-angle can be at 60~140 °, it is ensured that will not be because of the obstruction of two flanks Material is caused to flow down difficulty.
Enter gas-liquid separation to ensure in bottom moisture condensation room and top exhaust gas chamber that steam condensate smoothly collects cocurrent Room and on-condensible gas collecting chamber, the upper and lower heating tube bundle are downward-sloping along gas flow direction, and its level inclination is 0.36 ~1.62 °.
Beneficial effect:
(1) present invention reduces factory's thermic load using the energy preheating lignite entrained by the steam escaped in drier (more than 45%), it is energy-saving;
(2) moisture escaped in drier is reclaimed, the water resource of preciousness in lignite is fully recycled, lignite can be reclaimed More than the 43% of middle moisture;
(3) steam that lignite in preheater is volatilized can be reclaimed, it is to avoid lignite is on the top of preheater because on absorbing Rise steam and build bridge, cause lignite particle smoothly to flow down discharge, the condensate liquid of all recovery is reclaimed after treatment, to ring Border is friendly;
(4) present system is simple, technique is easy, and equipment investment and operating cost are low, safe and reliable.
Brief description of the drawings
Fig. 1 is present invention process flow chart and system diagram.
Fig. 2 is preheater structure chart.Fig. 3 is the A-A sectional views of Fig. 1.
Wherein, 1- housings, 2- charging apertures, 3- discharging openings, 4- gas-liquid separation chamber, 5- fixed gas collecting chambers, 6- dirt liquid is collected Separation chamber, heating tube bundle, 10- air-vents, 11- air inlets, 12- baffle plates, 13- under 7- steam cloth air chamber, the upper heating tube bundles of 8-, 9- Drier, 14- dedusters, 15- water treatment systems, 16- preheaters.
Specific embodiment
Explanation is further explained to present system below in conjunction with the accompanying drawings:
Referring to Fig. 1, the series connection drier 13 of preheater 16, the drier 13 can be 1 or many connection in series-parallel, the drying The charging aperture of device 13 is connected with the discharging opening of preheater 16, moisture outlet removing dust device 14 and the drier 13 of the drier 13 Air inlet is connected.
The preheater 16 includes housing 1, and the top of the housing 1 sets charging aperture 2, and bottom sets out material mouth 3, and top sets air inducing Mouth 10, bottom sets air inlet 11, and steam cloth air chamber 7 is provided with the air inlet 11;Fixed gas receipts are provided with the air-vent 10 Collection room 5.Epimere is provided with the upper heating tube bundle 8 of lateral arrangement in the housing 1, and hypomere is provided with the lower heating tube bundle 9 of lateral arrangement, The steam cloth air chamber 7 is connected through lower heating tube bundle 9, gas-liquid separation chamber 4, upper heating tube bundle 8 with fixed gas collecting chamber 5, described Upper and lower heating tube bundle 8,9 is downward-sloping along gas flow direction, and its level inclination c is 0.36~1.62 °.The housing 1 Interior stage casing also sets the multi-row staggered baffle plate 12 being evenly arranged, and one end and the dirt liquid of the baffle plate 12 are collected separation chamber 6 and is connected, and gear Plate 12 collects the direction of separation chamber 6 along dirt liquid has a downward level inclination, the level inclination a of the baffle plate 12 for 0.36~ 1.62 °, the section of the plate washer 12 is inverted V-shaped, and angle b is 60~140 °.
The gas-liquid separation chamber 4, the solidifying gas collecting chamber 5, condensate outlet of steam cloth air chamber 7 and cold dirt liquid are collected and separated The clarified solution outlet of room 6 is connected with water treatment system 15.
Operation principle:
Raw material lignite (water content 30wt%) is continuously added in preheater 16 from charging aperture 1, is flowed downward first through upper heating Tube bank 7 is exchanged heat with the steam in pipe, is then uniformly distributed through multi-layer intercrossed arrangement baffle plate 12, then through lower heating tube bundle 8 and Steam in pipe further exchanges heat, and lignite temperature can reach 46 DEG C when reaching discharging opening 2, and water content can be down to 20wt%, The final bottom discharge from preheater 16 mouthful 8 is continuously discharged into drier 13 and is further dried to below water content 7wt%.It is dry The steam that drying is evaporated in dry device 13 removes the fine dust particles wherein carried secretly through moisture outlet feeding deduster 14, so The air inlet 11 of preheater 16 is re-fed into afterwards.
In preheater 16, the steam produced in lignite warm is risen at the baffle plate 12 of uniform interlaced arrangement, quilt Stop and formed the lower surface that condensate liquid is attached to baffle plate 12, the dust-laden condensate liquid that baffle plate 12 is collected flows into dirt liquid and collects separation chamber 6, dirt liquid separation is further carried out in dirt liquid collects separation chamber 6, collect condensate liquid;On the other hand, drawn in drier 13 Steam (105 DEG C, 0.1MPa) enters lower heating tube bundle 9 after entering steam cloth air chamber 7 uniformly by air inlet 11 by the hypomere of housing 1 Lignite heat exchange with housing 1, undergoes phase transition condensation herein, discharges heat lignite, is separated subsequently into gas-liquid separation chamber 4 Condensate liquid in steam, fixed gas is further brown to preheating by the upper heating tube bundle 8 that gas-liquid separation chamber 4 enters back into the epimere of housing 1 Coal, condensed water is further separated out subsequently into fixed gas collecting chamber 5, and fixed gas is in the presence of air-introduced machine by the row of air-vent 10 Go out, now gas temperature is (40 DEG C).
Condensate liquid in the gas-liquid separation chamber 4 and fixed gas collecting chamber 5 and steam cloth air chamber 7 can be by condensation-water drain Discharge, dirt liquid collect separation chamber 6 in collect dust-laden condensate liquid after sedimentation separation, bottom discharge mud, top overflow it is clear The clarified liquid outlet discharge of clear liquid, the condensate liquid of discharge sends into reuse after water treatment system 6 is processed.The water treatment system 6 can use biological oxidation system or other existing water treatment systems suitable for industry condensation water process, this area skill Art personnel can rationally select suitable as needed, to meet recycle-water (being such as incorporated to circulating water networking) standard.

Claims (10)

1. a kind of brown coal drying and upgrading and dry Water Sproading and utilize technique, including will lignite send into dry in drier after done Dry coal and the steam for evaporating, it is characterised in that the lignite first to be sent into be re-fed into after preheating in preheater and dry in drier, It is then exhausted from after lignite indirect heat exchange in feeding preheater after the steam removing dust device dedusting drawn in the drier, generation Condensate liquid sends into water treatment system treatment after collecting.
2. brown coal drying and upgrading as claimed in claim 1 and dry Water Sproading and utilize technique, it is characterised in that the preheater Lower housing section be provided with lower heating tube bundle, epimere is provided with heating tube bundle, and the steam first sends into the lower heating tube bundle of preheater In with lignite indirect heat exchange, then upper heating tube bundle flowed into after isolating condensate liquid through gas-liquid separation chamber further changed indirectly with lignite It is vented after heat;Gas-liquid separation chamber goes out the condensate liquid feeding water treatment system treatment isolated.
3. brown coal drying and upgrading as claimed in claim 1 or 2 and dry Water Sproading and utilize technique, it is characterised in that enter pre- Lignite 30~50wt% of water content before hot device, the lignite water content for going out preheater declines 10wt% or so.
4. brown coal drying and upgrading as claimed in claim 1 or 2 and dry Water Sproading and utilize technique, it is characterised in that be described pre- The stage casing of hot device is provided with baffle plate, and the steam produced in lignite warm rises to and condensed at baffle plate to form condensed water, described cold Solidifying water flows into dirt liquid collection separation chamber along baffle plate carries out dirt liquid carries out sedimentation separation, and dirt liquid collects separation chamber bottom discharge mud, Top overflow clarified solution, the clarified solution feeding water treatment system treatment.
5. a kind of brown coal drying and upgrading and dry Water Sproading and utilize system, including drier, it is characterised in that also include preheating Device, the preheater includes housing, and the case top sets charging aperture, and bottom sets out material mouth, top set air-vent, bottom set into Gas port, epimere is provided with the upper heating tube bundle of lateral arrangement in the housing, and hypomere is provided with the lower heating tube bundle of lateral arrangement, described Air inlet is connected through lower heating tube bundle, gas-liquid separation chamber, upper heating tube bundle with air-vent;The charging aperture of the drier and preheating The discharging opening connection of device, the moisture outlet removing dust device of the drier is connected with the air inlet of preheater, the gas-liquid separation The condensation-water drain of room is connected with water treatment system.
6. brown coal drying and upgrading as claimed in claim 5 and dry Water Sproading and utilize system, it is characterised in that in the housing Stage casing also sets the multi-row staggered baffle plate being evenly arranged, and one end and the dirt liquid of the baffle plate are collected separation chamber and is connected, and baffle plate is along dirt Liquid collects separation chamber direction has downward level inclination, and the dirt liquid collects clarified solution outlet and the water treatment system of separation chamber Connection.
7. brown coal drying and upgrading as claimed in claim 6 and dry Water Sproading and utilize system, it is characterised in that the plate washer Section is inverted V-shaped, and the angle of its inverted V-shaped is 60~140 °.
8. brown coal drying and upgrading as claimed in claim 6 and dry Water Sproading and utilize system, it is characterised in that the baffle plate Level inclination is 0.36~1.62 °.
9. brown coal drying and upgrading as described in claim any one of 5-8 and dry Water Sproading and utilize system, it is characterised in that institute State and be provided with air inlet steam cloth air chamber;Fixed gas collecting chamber is provided with the air-vent.
10. brown coal drying and upgrading as claimed in claim 6 and dry Water Sproading and utilize system, it is characterised in that be described upper and lower Heating tube bundle is downward-sloping along gas flow direction, and its level inclination is 0.36~1.62 °.
CN201610996706.7A 2016-11-11 2016-11-11 Brown coal drying and upgrading and Water Sproading is dried using technique and its system Pending CN106766828A (en)

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CN201610996706.7A CN106766828A (en) 2016-11-11 2016-11-11 Brown coal drying and upgrading and Water Sproading is dried using technique and its system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610996706.7A CN106766828A (en) 2016-11-11 2016-11-11 Brown coal drying and upgrading and Water Sproading is dried using technique and its system

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5573780A (en) * 1979-02-12 1980-08-21 John Michael Chambers Drying process and apparatus
RU2222752C2 (en) * 2001-12-24 2004-01-27 Евсеев Геннадий Александрович Water-heating plant for heating purposes and/or hot-water supply, cooled condensate return tank of plant, and liquid-to-liquid heat exchanger of plant
CN201569251U (en) * 2009-12-25 2010-09-01 山东天力干燥设备有限公司 Oxygen-free lignite drying system
CN201569260U (en) * 2009-12-28 2010-09-01 山东天力干燥设备有限公司 Indirect heat-exchange rotation superheating steam brown coal drying system
EP2495495A2 (en) * 2011-03-02 2012-09-05 Babcock Borsig Steinmüller GmbH Fluidised bed drier system
CN102967121A (en) * 2012-11-30 2013-03-13 山东科院天力节能工程有限公司 Lignite drying system and technology with superheated steam capable of recycling waste steam heat
CN205175027U (en) * 2015-11-23 2016-04-20 四川农业大学 Can collect liquid hot air drying equipment
CN206176948U (en) * 2016-11-11 2017-05-17 中国五环工程有限公司 Matter and dry water recycle system are put forward to brown coal drying

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5573780A (en) * 1979-02-12 1980-08-21 John Michael Chambers Drying process and apparatus
RU2222752C2 (en) * 2001-12-24 2004-01-27 Евсеев Геннадий Александрович Water-heating plant for heating purposes and/or hot-water supply, cooled condensate return tank of plant, and liquid-to-liquid heat exchanger of plant
CN201569251U (en) * 2009-12-25 2010-09-01 山东天力干燥设备有限公司 Oxygen-free lignite drying system
CN201569260U (en) * 2009-12-28 2010-09-01 山东天力干燥设备有限公司 Indirect heat-exchange rotation superheating steam brown coal drying system
EP2495495A2 (en) * 2011-03-02 2012-09-05 Babcock Borsig Steinmüller GmbH Fluidised bed drier system
CN102967121A (en) * 2012-11-30 2013-03-13 山东科院天力节能工程有限公司 Lignite drying system and technology with superheated steam capable of recycling waste steam heat
CN205175027U (en) * 2015-11-23 2016-04-20 四川农业大学 Can collect liquid hot air drying equipment
CN206176948U (en) * 2016-11-11 2017-05-17 中国五环工程有限公司 Matter and dry water recycle system are put forward to brown coal drying

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