CN102927795B - System and method for drying brown coal indirectly in roller mode by flue gas - Google Patents
System and method for drying brown coal indirectly in roller mode by flue gas Download PDFInfo
- Publication number
- CN102927795B CN102927795B CN201210215491.2A CN201210215491A CN102927795B CN 102927795 B CN102927795 B CN 102927795B CN 201210215491 A CN201210215491 A CN 201210215491A CN 102927795 B CN102927795 B CN 102927795B
- Authority
- CN
- China
- Prior art keywords
- brown coal
- flue gas
- drying
- inner core
- urceolus
- 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.)
- Expired - Fee Related
Links
Abstract
The invention relates to a system and a method for drying brown coal indirectly in a roller mode by flue gas, and is used for the field of the drying of brown coal. The system comprises a flue gas generation device, a roller type indirect drying device, a flue gas side induced draft fan, a brown coal channel side induced draft fan, a condensing tower and a fine powder separation device, wherein the roller type indirect drying device has a double-layer sleeve structure; an outer sleeve and an inner sleeve are formed by welding a plurality of flue gas pipelines; guide vanes are welded on the sleeve walls; and flue gas channels have a casing pipe structure, so that temperature in the sleeves in the axial direction is uniform. By the method, the flue gas generation device generates flue gas of 400 to 500 DEG C, and the flue gas and the brown coal in a brown coal channel are subjected to reverse flow indirect heat exchange by the flue gas channels, so that the brown coal is heated and dehydrated uniformly. By the system and the method, the brown coal is heated uniformly, and the problems of burst due to high temperature rise speed of brown coal particles, abrasion caused by incapability of rotation of a roller by the conventional indirect drying method and the like are solved.
Description
Technical field
The present invention relates to brown coal drying system, a large amount of brown coal can be applied to and continue dry, and greatly improve the deficiency of existing brown coal drying technology existence, make brown coal utilize clean and effective more.
Background technology
Lignite resource feature be reserves large, bury shallow, cost of winning is low.Global brown coal oil in place is 4,000,000,000,000 tons, accounts for nearly 40% of whole world coal reserves.The fat coal resources such as current China bituminous coal, anthracite have been fully utilized, and just start large-scale developing and utilizing of brown coal.At the bottom of nineteen ninety-five, China has verified brown coal reserves 1,303 hundred million tons, accounts for about 13% of national coal reserves, occupies critical role in coal resources in China.
The lignite resource of China is more concentrated, but has three problems at present on brown coal utilize.One is that brown coal digest limited amount on the spot because grown place, brown coal place is underdeveloped; Two is need the distance brown coal place of production, the Economic contrast developed regions of a large amount of coal distant, and be non-remunerative economically to long-distance transportation high-moisture, low-calorie brown coal, especially the place of production is at northeastern Inner Mongolia brown coal, the winter high water content brown coal cold in the north is easily frozen into block, freeze railway carriage etc., serve trouble to the bands such as handling, transport, Here it is there is economy problems in outside transport; Three is high-moisture, high-volatile, high ash contents of brown coal, is also unfavorable for long-time storage.The problem not easily storing and transport of brown coal, causes lignite resource to be mainly used near coal-mine generating.And current electric coal generally carries out high quality and favourable price, because moisture golf calorific value is low, ton coal price is low, and the income from sales that result in coal reduces.
So rationally expand brown coal utilization ways, improve the economy of coal mining processing, meet the demand of developed area to coal resources, be necessary to carry out processed to brown coal raw coal.After brown coal drying, greatly can improve the caloric value of brown coal, realize economical transport, improve burn-off rate and the boiler thermal output of boiler combustion, improve whole energy utilization rate.
The drying and dehydrating technology of coal is a lot, and substantially can be divided into mechanical dehydration, non-evaporating dehydrolysis and dehydration by evaporation three major types, dehydration by evaporation comprises again Direct Dehydration method and indirect evaporation.Wherein operating condition and method are comparatively simple comparatively speaking for dehydration by evaporation mode, be applicable to the preparation of a large amount of material, therefore in order to utilize lignite resource in a large number, evaporation drying method being utilized to the process of brown coal both at home and abroad more, below simple introduction having been done to it direct drying method comprised and contact drying method:
One, direct drying method: contact drying method can be called again, dry gas is adopted to heat brown coal with direct to contact with brown coal, make it dewater, mostly the brown coal drying technology come into operation at present in China is to use this type of drying means, using the heat smoke of coal combustion generation as drying medium.This mode equipment is the simplest, easy and simple to handle.But directly heat because flue-gas temperature is higher, flue gas and coal excessive temperature differentials, coal cinder heating rate is too fast, and coal cinder easily breaks and forms much thin powder.The main two kinds of methods of domestic transport brown coal, one is railway transportation, and too much fine powder can cause a large amount of airborne dusts.Two is shipment sea-freights, entrucking transport after the unloading of harbour near user, a large amount of airborne dusts can be caused equally in the process of stevedoring, in order to reach the effect reducing airborne dust in a lot of situation, can spray water, so then make dried brown coal again be combined with water, destroy dry effect.Meanwhile, hybrid direct heating in the past, owing to containing a certain amount of dust in flue gas, can be adsorbed on dried brown coal surface, have impact on the aesthetic property of dry rear brown coal, its real value is a greater impact.
Two, contact drying method: indirect drying is generally the mode of the outer coal of heat medium/pipe in pipe, and wherein heat medium can be steam, oil or hot-air etc.What current indirect type drying device mainly adopted is cartridge type external form.Adopt contact drying method, first flue gas and brown coal are separately, intermediate heat thermal resistance increases, the heating rate of coal particle is slowed down greatly, restrained effectively breaking of coal cinder, decrease the ratio of fine powder in dry rear brown coal, greatly reduce the difficulty of transport, simultaneously brown coal separate with flue gas and also ensure that brown coal by the dust pollution in flue gas, can not improve the aesthetics of drying brown coal, improve its commercial value.The external brown coal drying mode usually adopted is the indirect utilizing high pressure-temperature saturated vapor to carry out brown coal, because under uniform pressure, water saturation temperature is certain, water vapour in heating process can be made to keep saturation state, and whole process temperature is constant, and heating rate is also more steady always.But owing to cannot realize rolling seal at connector position, therefore for preventing steam leakage, the general fixing core structure tilted that adopts heats.But fixing structure can cause the jet chimney in the porch of coal to there are larger wearing and tearing, easily causes the steam leakage because transducer wall ' s abrasion causes.
Summary of the invention
Fast for the direct drying method rate of heat addition in above-mentioned existing brown coal drying method, coal cinder easily breaks, and contact drying method cannot realize the problems such as rolling, a kind of drum-type flue gas brown coal contact drying system and method is proposed, thus it is too fast to solve temperature rise rate, baking temperature skewness and heat-exchanger rig cannot roll the problems such as the wearing and tearing that bring.
Technical scheme of the present invention is as follows:
A kind of drum-type flue gas brown coal contact drying system, it is characterized in that: comprise smoke generating appts, drum-type flue gas brown coal contact drying device, fume side air-introduced machine, brown coal channel side air-introduced machine, condensing tower and fine powder separator, described drum-type flue gas brown coal contact drying device comprises telescopic cylinder, frame and drive unit; Telescopic cylinder comprises urceolus and inner core, described urceolus and inner core are welded by many flues, inner core and outer tube inner wall are all welded with guide vane, at formation center, the center brown coal passage of inner core and urceolus, between urceolus and inner core, form annular brown coal passage; Brown coal inlet tube, steam outlet pipe and gas collector is provided with in one end of inner core and urceolus, described fume side air-introduced machine is communicated with many exhaust gases passes of urceolus with inner core by gas collector, steam outlet pipe is connected with brown coal channel side air-introduced machine, and brown coal inlet tube is connected with annular brown coal passage with described center brown coal passage; Be provided with drying brown coal outlet and flue gas distributor at the other end of inner core and urceolus, described smoke generating appts is communicated with many exhaust gases passes of urceolus with inner core by flue gas distributor; Drying brown coal outlet is connected with fine powder separator.
Technical characteristic of the present invention is also: drum-type flue gas brown coal contact drying system also comprises nitrogen gas generating device, be provided with nitrogen inlet tube near flue gas distributor one end, nitrogen gas generating device is connected with annular brown coal passage with center brown coal passage by nitrogen inlet tube.
Another technology of the present invention is characterized in that: described flue adopts sleeve structure, and be made up of exhaust gases passes outer tube and adiabatic inner sleeve, the internal diameter of exhaust gases passes outer tube is 100-115mm; The internal diameter of adiabatic inner sleeve is 70 ~ 80mm, and the length of adiabatic inner sleeve accounts for 45% ~ 55% of whole flue.
The indirect dry coal method of a kind of drum-type flue gas brown coal provided by the invention, is characterized in that the method comprises the steps:
1) heat smoke produced by smoke generating appts enters the flue of inner core and urceolus by flue gas distributor;
2) brown coal enter center brown coal passage and annular brown coal passage by coal bunker respectively by brown coal inlet tube, and move in a counter-current configuration with the flue gas in flue under guide vane effect, the flue gas in flue carries out indirect to brown coal;
3) through heat exchange flue gas by smoke outlet tube by the effect of fume side air-introduced machine under leave cylinder, the steam generated in dry run enters condensing tower under the effect of brown coal channel side air-introduced machine, and steam condensation in condensing tower utilizes for condensed water user;
4) dried brown coal enter fine powder separator via drying brown coal outlet, and isolated bulky grain brown coal are directly transported to drying brown coal user place and utilize;
5) isolated thin brown coal particle enters smoke generating appts and burns, and replaces outside brown coal supply, realizes recycling.
The heat smoke temperature produced in described smoke generating appts is 400 ~ 500 DEG C.
In above-mentioned drum-type flue gas brown coal contact drying method, the nitrogen generated by nitrogen gas generating device, center brown coal passage and annular brown coal passage is entered by the nitrogen inlet tube being arranged in flue gas distributor homonymy, nitrogen mixes with the steam of generation, and enter condensing tower separation by steam outlet, realize recycling.
The present invention has the following advantages and high-lighting effect: 1. cylinder of the present invention is double-walled sleeve, barrel is formed by exhaust gases passes pipeline welding, the brown coal particle dropped into is subject to the effect of double-layer heating, individual layer heating as compared with the past, the technical program adds heating surface area, makes heat transfer more even; 2. flue is sleeve structure, inside is adiabatic inner sleeve, flue gas is divided into two parts, part heating leading portion brown coal, another part Part I flue gas that section is lower with temperature in the channel mixes again, make the Temperature Distribution of whole dry run comparatively even, brown coal can not burst because local heat speed is too high; 3. this drum-type flue gas brown coal contact drying technology is adopted, the fine powder amount produced in dry run reduces greatly, the fine powder amount produced accounts for 8% of total coal amount, this part fine powder is separated the flue gas that directly can carry out burning in smoke generating appts and generate required for heating brown coal through fine powder separator, substantially reach self-sufficiency; 4. brown coal channel side only has nitrogen and steam to exist, and nitrogen can be separated completely with water by condensing tower, condensed water can directly utilize, and nitrogen circulation utilizes, and under there is not convection drying condition, flue gas is to the pollution problem of steam; 5. brown coal coal ash ash fusion point is low, can realize slag tap in smoke generating appts, avoids the generation of dust.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of brown coal drying system.
Fig. 2 is the structural principle schematic diagram of drum-type flue gas brown coal contact drying device.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the profile of single flue.
In figure: 1-smoke generating appts; 2-drum-type flue gas brown coal contact drying device; 3-fume side air-introduced machine; 4-brown coal channel side air-introduced machine; 5-condensing tower; 6-condensed water user; 7-fine powder separator; 8-drying brown coal user; The telescopic cylinder of 9-; 10-guide vane; 11-brown coal inlet tube; 12-drying brown coal outlet; 13-flue gas distributor; 14-gas collector; 15-nitrogen inlet tube; 16-steam outlet pipe; 17-frame; 18-drive unit; 19-flue; 20a-center brown coal passage, 20b-annular brown coal passage; 21-exhaust gases passes outer tube; 22-exhaust gases passes; The adiabatic inner sleeve of 23-.
Detailed description of the invention
Below in conjunction with accompanying drawing, structural principle of the present invention and the course of work are described further.
Fig. 1 is the schematic diagram of brown coal drying system, and this drying system comprises smoke generating appts 1, drum-type flue gas brown coal contact drying device 2, fume side air-introduced machine 3, brown coal channel side air-introduced machine 4, condensing tower 5 and fine powder separator 7.The heat smoke produced by smoke generating appts 1 enters drum-type flue gas brown coal contact drying device 2, brown coal to be entered the brown coal passage in drum-type flue gas brown coal contact drying device by brown coal inlet tube by coal bunker, and move in a counter-current configuration with cigarette, the flue gas in flue carries out indirect to brown coal; Flue gas through heat exchange leaves cylinder by smoke outlet tube under fume side air-introduced machine 3 acts on, and the steam generated in dry run enters condensing tower 5 under the effect of brown coal channel side air-introduced machine 4, and steam condensation in condensing tower utilizes for condensed water user 6; Dried brown coal enter fine powder separator 7 via drying brown coal outlet, and isolated bulky grain brown coal are directly transported to drying brown coal user 8 place and utilize; Isolated thin brown coal particle enters smoke generating appts 1 and burns, and replaces outside brown coal supply, realizes recycling.
Smoke generating appts 1 is for the fine powder that generates in combusting brown coal dry run thus produce flue gas brown coal; It is tiny structure environment that fume side air-introduced machine 3 is used for making in flue, prevents high-temperature flue gas in running from revealing and causes safety problem; Brown coal channel side air-introduced machine 4, in order to guide the steam and nitrogen mixed gas that produce in dry run and to make in center brown coal passage and annular brown coal passage, in tiny structure, to prevent vapours from revealing and cause safety problem; Condensing tower 5, cool in order to the exhaust steam produced in dry run is passed into cooling tower, steam in exhaust steam can be condensed is separated with N2, thus can water processed, to a certain degree solving local problem of water consumption, isolated N2 again can pass into N2 entrance and recycle; Condensed water user 6; Fine powder separator 7 is separated with bulky grain brown coal for fine powder drying generated, and fine particle will be admitted in smoke generating appts and generate flue gas, for brown coal drying through burning.
This flue gas brown coal contact drying system can also comprise a nitrogen gas generating device, be connected by nitrogen inlet tube 15 with drum-type flue gas brown coal contact drying device 2, nitrogen can be produced in system cloud gray model, nitrogen enters brown coal passage by nitrogen inlet tube 15, reduce the steam partial pressure in brown coal passages, promote the carrying out of dry run and the steam carrying generation leaves brown coal passage.
Fig. 2 is the structure diagram of drum-type flue gas brown coal contact drying device, and this device comprises telescopic cylinder 9, frame 17 and drive unit 18; Telescopic cylinder 9 comprises urceolus and inner core, described urceolus and inner core are welded by many flues 19, inner core and outer tube inner wall are all welded with guide vane 10, at formation center, the center brown coal passage 20a of inner core and urceolus, between urceolus and inner core, form annular brown coal passage 20b; Brown coal inlet tube 11, steam outlet pipe 16 and gas collector 14 is provided with in one end of inner core and urceolus, described fume side air-introduced machine 3 is communicated with many exhaust gases passes of urceolus with inner core by gas collector 14, steam outlet pipe 16 is connected with brown coal channel side air-introduced machine 4, and brown coal inlet tube 11 is connected with annular brown coal passage 20b with described center brown coal passage 20a; Be provided with drying brown coal outlet 12 and flue gas distributor 13 at the other end of inner core and urceolus, described smoke generating appts 1 is communicated with many exhaust gases passes of urceolus with inner core by flue gas distributor 13; Drying brown coal outlet 12 is connected with fine powder separator 7.
The brown coal particle dropped into is subject to the effect of double-layer heating, individual layer heating as compared with the past, and double-layer heating adds heating surface area, makes heat transfer more even; Guide vane 10, in order to guide the transverse movement of brown coal in center brown coal passage and annular brown coal passage and brown coal can be brought to more high altitude, is strengthened stirring increase heat-transfer surface in cylinder thus increasing heat exchange efficiency; Brown coal inlet tube 11, steam outlet pipe 16 and gas collector 14 is provided with in one end of inner core and urceolus, fume side air-introduced machine 3 is communicated with many exhaust gases passes of urceolus with inner core by gas collector 14, for being derived by lower for temperature after heat exchange flue gas and making journey tiny structure in flue, the high-temperature flue gas that prevents from being in operation is revealed and is caused danger; Steam outlet pipe 16 is connected with brown coal channel side air-introduced machine 4, derives for the steam will generated in center brown coal passage 20a and annular brown coal passage 20b; Brown coal inlet tube 11 is connected with annular brown coal passage 20b with center brown coal passage 20a, carries out drying for being imported in cylinder by brown coal to be dried; Drying brown coal outlet 12 is provided with at the other end of inner core and urceolus, flue gas distributor 13 and nitrogen inlet tube 15, described smoke generating appts 1 is communicated with many exhaust gases passes of urceolus with inner core by flue gas distributor 13, is evenly distributed to by heat smoke in each exhaust gases passes; Drying brown coal outlet 12 is connected with fine powder separator 7, for being derived by brown coal after drying and being separated by fine powder; Described nitrogen gas generating device is connected with annular brown coal passage 20b with center brown coal passage 20a by nitrogen inlet tube 15, for brown coal passage nitrogen injection, to reduce steam partial pressure and the steam carrying generation leaves cylinder by steam outlet pipe 16; Cylinder is arranged in frame 17 and drives running by drive unit 18.
Fig. 3 be the A-A of drum-type flue gas brown coal contact drying device to sectional view, the flue that telescopic cylinder barrel is about 100-115mm by multiple bore is welded; Inner core and outer tube inner wall are all welded with guide vane 19, pass through cylinder in order to drive brown coal by center brown coal passage 20a and annular brown coal passage 20b.
Fig. 4 is the profile of single flue, its structure is sleeve structure, outer tube internal diameter is 100-115mm, adopt soot blower system, selective sootblowing, the flue blocking that bigbore flue gas path can effectively prevent the dust in flue gas from causing owing to adhering to tube wall, and the regular ash that blows also effectively prevent because dust piles up the blocked path caused for a long time in the duct; Adiabatic inner sleeve 23, internal diameter is about 70-80mm, length is about the 45%-55% of whole flue gas path, keep substantially constant in order to keep flue-gas temperature in pipeline section and do not participate in heat exchange with outside, thus ensure Temperature Distribution in whole flue gas path evenly, preventing flue gas path first half section from heating, brown coal speed is too high and second half section flue-gas temperature is too low; Flue gas passes through whole flue gas pipeline by flue gas path 22.
The operation principle of this flue gas brown coal contact drying system initially provides brown coal by externally to smoke generating appts in operation, brown coal burn in smoke generating appts, produce the heat smoke that temperature is 400-500 DEG C, each flue 19 of composition cylinder wall is entered from flue gas distributor 13, need brown coal to be processed enter cylinder 9 by brown coal entrance 11, and be guided through by guide vane 10 the center brown coal passage and annular brown coal passage that telescopic cylinder is made up of urceolus and inner core.Flue gas and brown coal take reflux type indirect heat exchange.Low-temperature flue gas after heat exchange enters flue gas gas collector 14 by exhaust gases passes and discharges under the effect of fume side air-introduced machine 3, in whole process, it is tiny structure that fume side air-introduced machine 3 remains in flue, prevents heat smoke in running from revealing and causes safety problem.In brown coal drying process, separate from brown coal particle for preventing center brown coal passage and the too high suppression steam of annular brown coal passage internal cause steam partial pressure, nitrogen can be passed into brown coal passage by nitrogen inlet tube 15, reduce in-channel water partial vapour pressure and under the effect of brown coal channel side air-introduced machine 4, steam carried out brown coal passage from steam outlet pipe 16, to reach better drying effect.Nitrogen and the dry steam that generates are introduced condensing tower 5 from steam outlet pipe 16 by brown coal channel side air-introduced machine 4, through condensing heat-exchange, condensed water can be delivered to condensed water user 6 and utilize, this is significant for western water-deficient area, nitrogen can pass into nitrogen inlet 15 and again participate in circulation, thus replaces outside nitrogen gas generator.After dry, brown coal export 12 by drying brown coal and enter fine powder separator 7.Adopt drum-type brown coal drying technology, the fine powder amount produced in dry run reduces greatly, but still the fine powder accounting for total amount about 8% can be produced, the brown coal fine particle generated in dry run will be separated by fine powder separator 7 and be admitted to smoke generating appts 1, thus replace outside coal supply, reach self-sufficiency, simultaneously in order to avoid dust, utilize the low-melting feature of lignite ash to realize slag tap, retention efficiency is more than 70%.And the oarse-grained brown coal particle separated will be transported to drying brown coal user 8.
Claims (6)
1. a drum-type flue gas brown coal contact drying system, it is characterized in that: this drying system comprises smoke generating appts (1), drum-type flue gas brown coal contact drying device (2), fume side air-introduced machine (3), brown coal channel side air-introduced machine (4), condensing tower (5) and fine powder separator (7), described drum-type flue gas brown coal contact drying device comprises telescopic cylinder (9), frame (17) and drive unit (18); Telescopic cylinder (9) comprises urceolus and inner core, described urceolus and inner core are welded by many flues (19), inner core and outer tube inner wall are all welded with guide vane (10), at the formation center, center brown coal passage (20a) of inner core and urceolus, between urceolus and inner core, form annular brown coal passage (20b); Brown coal inlet tube (11), steam outlet pipe (16) and gas collector (14) is provided with in one end of inner core and urceolus, described fume side air-introduced machine (3) is communicated with many exhaust gases passes of urceolus with inner core by gas collector (14), steam outlet pipe (16) is connected with brown coal channel side air-introduced machine (4), and brown coal inlet tube (11) is connected with annular brown coal passage (20b) with described center brown coal passage (20a); Be provided with drying brown coal outlet (12) and flue gas distributor (13) at the other end of inner core and urceolus, described smoke generating appts (1) is communicated with many exhaust gases passes of urceolus with inner core by flue gas distributor (13); Drying brown coal outlet (12) is connected with fine powder separator (7).
2. a kind of drum-type flue gas brown coal contact drying system according to claim 1, it is characterized in that: drum-type flue gas brown coal contact drying system also comprises nitrogen gas generating device, be provided with nitrogen inlet tube (15) near flue gas distributor (13) one end, nitrogen gas generating device is connected with annular brown coal passage (20b) with center brown coal passage (20a) by nitrogen inlet tube (15).
3. a kind of drum-type flue gas brown coal contact drying system according to claim 1, it is characterized in that: flue (19) adopts sleeve structure, be made up of exhaust gases passes outer tube (21) and adiabatic inner sleeve (23), the internal diameter of exhaust gases passes outer tube is 100-115mm; The internal diameter of adiabatic inner sleeve is 70 ~ 80mm, and the length of adiabatic inner sleeve accounts for 45% ~ 55% of whole flue.
4. the drum-type flue gas brown coal contact drying method of drying system employing as claimed in claim 1, is characterized in that the method comprises the steps:
1) heat smoke produced by smoke generating appts enters the flue of inner core and urceolus by flue gas distributor;
2) brown coal enter center brown coal passage and annular brown coal passage by coal bunker respectively by brown coal inlet tube, and move in a counter-current configuration with the flue gas in flue under guide vane effect, the flue gas in flue carries out indirect to brown coal;
3) flue gas through heat exchange leaves cylinder by smoke outlet tube under the effect of fume side air-introduced machine, and the steam generated in dry run enters condensing tower by under the effect of brown coal channel side air-introduced machine, and steam condensation in condensing tower utilizes for condensed water user;
4) dried brown coal enter fine powder separator via drying brown coal outlet, and isolated bulky grain brown coal are directly transported to drying brown coal user place and utilize;
5) isolated thin brown coal particle enters smoke generating appts and burns, and replaces outside brown coal supply, realizes recycling.
5. a kind of drum-type flue gas brown coal contact drying method according to claim 4, is characterized in that: the heat smoke temperature produced in smoke generating appts is 400 ~ 500 DEG C.
6. a kind of drum-type flue gas brown coal contact drying method according to claim 4, it is characterized in that: the nitrogen generated by nitrogen gas generating device, center brown coal passage and annular brown coal passage is entered by the nitrogen inlet tube being arranged in flue gas distributor homonymy, nitrogen mixes with the steam of generation, and enter condensing tower separation by steam outlet, realize recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215491.2A CN102927795B (en) | 2012-06-27 | 2012-06-27 | System and method for drying brown coal indirectly in roller mode by flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215491.2A CN102927795B (en) | 2012-06-27 | 2012-06-27 | System and method for drying brown coal indirectly in roller mode by flue gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102927795A CN102927795A (en) | 2013-02-13 |
| CN102927795B true CN102927795B (en) | 2014-12-17 |
Family
ID=47642656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210215491.2A Expired - Fee Related CN102927795B (en) | 2012-06-27 | 2012-06-27 | System and method for drying brown coal indirectly in roller mode by flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102927795B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940205A (en) * | 2014-04-30 | 2014-07-23 | 苏州创维晟自动化科技有限公司 | Minitype electromagnetic hot air type cylinder dryer |
| CN105675643B (en) * | 2016-01-21 | 2018-12-18 | 南京理工大学 | The roasting combustion experimental provision of composite solidpropellant |
| CN107166916A (en) * | 2016-03-07 | 2017-09-15 | 华电电力科学研究院 | A kind of swinging coal drying breaker and its method |
| CN108679988A (en) * | 2018-06-08 | 2018-10-19 | 中国成达工程有限公司 | A kind of non-direct contact lignite drying unit and stoving process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002212568A (en) * | 2001-01-18 | 2002-07-31 | Kyocera Corp | Indirect heating type rotary dryer |
| CN101126600A (en) * | 2007-06-26 | 2008-02-20 | 大唐国际化工技术研究院有限公司 | Dryer |
| CN201364006Y (en) * | 2009-03-04 | 2009-12-16 | 中国化学工程股份有限公司 | Multi-tube revolving drum drying device |
| CN201555429U (en) * | 2009-11-10 | 2010-08-18 | 兰州瑞德干燥技术有限公司 | Steam chamber structure of steam rotary cylinder dryer for powdered coal |
| CN202074785U (en) * | 2011-05-31 | 2011-12-14 | 杨祥良 | Sleeve type device for drying coal slime through smoke |
-
2012
- 2012-06-27 CN CN201210215491.2A patent/CN102927795B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002212568A (en) * | 2001-01-18 | 2002-07-31 | Kyocera Corp | Indirect heating type rotary dryer |
| CN101126600A (en) * | 2007-06-26 | 2008-02-20 | 大唐国际化工技术研究院有限公司 | Dryer |
| CN201364006Y (en) * | 2009-03-04 | 2009-12-16 | 中国化学工程股份有限公司 | Multi-tube revolving drum drying device |
| CN201555429U (en) * | 2009-11-10 | 2010-08-18 | 兰州瑞德干燥技术有限公司 | Steam chamber structure of steam rotary cylinder dryer for powdered coal |
| CN202074785U (en) * | 2011-05-31 | 2011-12-14 | 杨祥良 | Sleeve type device for drying coal slime through smoke |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102927795A (en) | 2013-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102927795B (en) | System and method for drying brown coal indirectly in roller mode by flue gas | |
| CN102889607A (en) | Direct fired pulverizing system of smoke drying lignite coal fan mill | |
| CN104266214A (en) | Fan mill opening type powder producing system super or supercritical tower type boiler combustion and heat exchange method | |
| CN203771439U (en) | High-moisture lignite medium speed mill coal pulverizing system using pulverized coal combustion heating primary air | |
| CN202132965U (en) | Fuel-gas drying direct-firing pulverizing system with lignite-fired fanlike coal pulverizer | |
| CN203642145U (en) | Large condensing shell superheated steam boiler | |
| CN204176668U (en) | Super or the ultra supercritical tower boiler of fan mill open type pulverized coal preparation system | |
| CN203478310U (en) | Device for preventing grate surface of layer-burning boiler from coking | |
| CN203116058U (en) | Zhundong coal sodium-removal pretreatment and smoke fluidization drying medium-speed milling power-processing power generation system | |
| CN104121595B (en) | Rapid cooling type smoke mixing chamber device | |
| CN112097287B (en) | Boiler energy-saving and flue gas whitening system, process and application | |
| CN104329666B (en) | Superheat steam drying powder process type coal generating system | |
| CN204240384U (en) | Superheat steam drying powder process type coal generating system | |
| CN204240386U (en) | Superheat steam drying powder process type coal generating system | |
| CN203052616U (en) | Waste heat utilization device used in production process of sodium tripolyphosphate | |
| CN205909336U (en) | Oxygen heating system and oxygen boosting that oxygen boosting fires stew pot stove fire stew pot stove | |
| CN207162509U (en) | Improve SCR temperature of reactor system and devices | |
| CN205119022U (en) | Biomass gasification burning environmental protection boiler | |
| CN103965920A (en) | Rotary carbonizing furnace | |
| CN202109510U (en) | Built-in cyclone dust collector for boiler | |
| CN108167037A (en) | A kind of method widened extracted steam from turbine and utilized | |
| CN204420991U (en) | With the U-shaped coal-powder boiler of flue gas recirculation | |
| CN104373948B (en) | Superheat steam drying powder process type coal generating system | |
| CN204240390U (en) | Superheat steam drying powder process type coal generating system | |
| CN103343976B (en) | A kind of method improving the heat primary air temperature of burning high-moisture coal boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20160627 |