CN116379725A - High-moisture lignite predrying equipment integrated to thermal power plant - Google Patents

High-moisture lignite predrying equipment integrated to thermal power plant Download PDF

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Publication number
CN116379725A
CN116379725A CN202310217768.3A CN202310217768A CN116379725A CN 116379725 A CN116379725 A CN 116379725A CN 202310217768 A CN202310217768 A CN 202310217768A CN 116379725 A CN116379725 A CN 116379725A
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CN
China
Prior art keywords
moisture
moisture lignite
thermal power
power plant
lignite
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.)
Pending
Application number
CN202310217768.3A
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Chinese (zh)
Inventor
盛俊
程守卿
崔新建
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Jiangsu Lipei Electric Power Engineering Technology Service Co ltd
Original Assignee
Jiangsu Lipei Electric Power Engineering Technology Service Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Lipei Electric Power Engineering Technology Service Co ltd filed Critical Jiangsu Lipei Electric Power Engineering Technology Service Co ltd
Priority to CN202310217768.3A priority Critical patent/CN116379725A/en
Publication of CN116379725A publication Critical patent/CN116379725A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
    • F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
    • F26B11/0486—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum the elements being held stationary, e.g. internal scraper blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/005—Drying-steam generating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/001—Handling, e.g. loading or unloading arrangements
    • F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/04—Agitating, stirring, or scraping devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/14—Chambers, containers, receptacles of simple construction
    • F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention provides high-moisture lignite predrying equipment integrated with a thermal power plant, which comprises a rotating mechanism provided with a speed reducer and a discharging bin movably sleeved at the outer side of one end of the rotating mechanism. According to the high-moisture lignite predrying equipment integrated to the thermal power plant, the baffles are arranged on the two sides of the scraper, so that when the scraper rolls over the high-moisture lignite located on the lower half portion of the inner side of the inner roller, the arranged baffles can block the high-moisture lignite from flowing to the two sides of the scraper, and further the scraper can transfer more high-moisture lignite to a higher position to slide off, so that the lower half portion of the inner roller is prevented from gathering too much high-moisture lignite, the high-moisture lignite can be fully contacted with steam, the drying effect of the device on the high-moisture lignite is improved, the resistance to the high-moisture lignite can be reduced by a certain angle due to the inclination of the baffles, and the high-moisture lignite located on the lower half portion of the inner roller can normally flow along with the rotation of the inner roller.

Description

High-moisture lignite predrying equipment integrated to thermal power plant
Technical Field
The invention relates to the technical field of lignite predrying, and particularly discloses high-moisture lignite predrying equipment integrated with a thermal power plant.
Background
Lignite is mineral coal with relatively low coalification degree, is difficult to transport in a long distance, is difficult to store, is easy to wind and is easy to cause chemical reaction, is mainly suitable for the fields of chemical industry, power plant combustion and the like, lignite is used in power plant combustion, spontaneous combustion of lignite is easy to occur in coal mines after long-term storage, water spraying and humidity adjustment are usually utilized to prevent spontaneous combustion of lignite, but when the water sprayed lignite is combusted in a boiler, on one hand, smoke in the boiler is increased, heat loss is increased, the efficiency of the boiler is reduced, on the other hand, the lignite with moisture can lead to the enhancement of the output of a draught fan and a pulverizing system of a power generation system, so that the power generation electricity consumption of the power plant is increased, and the utilization of lignite predrying technology in a power plant plays an extremely important role in enhancing the overall economic benefit of the power plant.
When the high-moisture lignite is dried by using the steam rotary drying device, the high-moisture lignite from the coal hopper is conveyed into the hopper through the belt conveyor, the high-moisture lignite is conveyed into the roller through the spiral feeding machine in the hopper, at the moment, steam generated by the heat source is led into the roller from the discharge end of the roller under the driving of the blower, the high-moisture lignite is fully contacted with the steam through the rotation of the roller, and then the moisture in the high-moisture lignite is continuously evaporated, so that the drying of the high-moisture lignite is realized, when the air flow in the roller flows to the discharge end, the cyclone separator and the dust remover are sequentially led into the cyclone separator and the dust remover through the exhaust pipe to treat the moisture and dust particles contained in the air flow, and the treated air flow is discharged from the induced draft fan.
When the existing steam rotary drying device dries high-moisture brown coal in the roller through steam, part of the steam is directly discharged along with the air flow in the flowing process along with the air flow, so that the steam is wasted, effective utilization of steam resources cannot be achieved, meanwhile, the roller is more in the lower half part of the inner side of the roller through rotating the high-moisture brown coal in the rolling process of the roller due to the fact that the inner diameter of the roller is larger, and therefore the device cannot effectively roll the high-moisture brown coal, and the drying effect of the device on the high-moisture brown coal is poor.
Disclosure of Invention
In view of the above-mentioned defect or deficiency in the prior art, this application aims at providing a high moisture lignite predrying equipment of integrating in thermal power factory, including the rotary mechanism that installs the speed reducer, movable suit in the play feed bin of rotary mechanism one end outside, movable suit in the feeding storehouse of rotary mechanism other end outside, intercommunication in the heat source of ejection of compact storehouse one side, set up the discharge gate in ejection of compact storehouse bottom, set up the hopper in feeding storehouse one side and set up in the hopper inside and be linked together with the spiral feeder of one side in feeding storehouse and set up the blast pipe at feeding storehouse top, the inboard of rotary mechanism is provided with a plurality of scrapers and guiding mechanism that carry out dislocation distribution.
Preferably, the slewing mechanism comprises an outer roller sleeved on the inner sides of the discharging bin and the feeding bin, an inner roller is fixedly sleeved on the inner side of the outer roller through annular equidistant distributed supporting bosses, and a heat insulation layer positioned on the outer side of the supporting bosses is filled between the outer roller and the inner roller.
Preferably, the scraping plates and the flow guiding mechanism are distributed at intervals.
Preferably, baffles are arranged on two sides of the scraping plate, and a certain angle is formed between the baffles and the scraping plate.
Preferably, the six diversion mechanisms are distributed in a group in an annular equidistant manner, and the diversion mechanisms are distributed in a staggered manner between each group.
Preferably, the guide mechanism comprises a supporting plate arranged on the inner side of the inner roller, the guide plate is rotationally connected to the inner side of the top end of the supporting plate through a fixing pin, one side of the bottom of the guide plate is provided with a lower limit rod positioned on one side of the supporting plate, and one side of the top of the guide plate is provided with an upper limit rod positioned on one side of the supporting plate.
Preferably, the bottom surface of the guide plate is provided with inclined planes which are symmetrically distributed.
Preferably, the air feeder with adjustable air speed is arranged in the heat source, and the oxygen content of the steam generated by the heat source is low.
Advantageous effects
1. This integrate in thermal power factory's high moisture brown coal predrying equipment uses through backup pad, the fixed pin, lower gag lever post and the cooperation of last gag lever post for the guide plate that is located the inboard upper half of interior cylinder can rotate round the fixed pin under the effect of self gravity, steam flows the upper half time including the inboard of cylinder along with the air current this moment, go up the gag lever post and can block the air current, slow down the velocity of flow, make the inside longer of stay of cylinder including the steam, and then the steam can effectually heat high moisture brown coal, and the guide plate can incline certain angle under the spacing support of last gag lever post, the steam can be guided by the guide plate in the in-process that flows, make its contact with the high moisture brown coal that is located the lower half of interior cylinder in the lower half of interior cylinder, reduce the loss of steam, realize the effective utilization to steam resource.
2. According to the high-moisture lignite predrying equipment integrated to the thermal power plant, the baffles are arranged on the two sides of the scraper, so that when the scraper rolls over the high-moisture lignite located on the lower half portion of the inner side of the inner roller, the arranged baffles can block the high-moisture lignite from flowing to the two sides of the scraper, and further the scraper can transfer more high-moisture lignite to a higher position to slide off, so that the lower half portion of the inner roller is prevented from gathering too much high-moisture lignite, the high-moisture lignite can be fully contacted with steam, the drying effect of the device on the high-moisture lignite is improved, the resistance to the high-moisture lignite can be reduced by a certain angle due to the inclination of the baffles, and the high-moisture lignite located on the lower half portion of the inner roller can normally flow along with the rotation of the inner roller.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the swing mechanism of the present invention;
FIG. 3 is a side cross-sectional view of the swing mechanism of the present invention;
FIG. 4 is a schematic cross-sectional view of a screed according to the present invention;
FIG. 5 is a schematic side view of a diversion mechanism according to the present invention;
FIG. 6 is a schematic view of a diversion mechanism of the present invention;
FIG. 7 is a side partial schematic view of the deflector mechanism of the present invention.
In the figure: 1. a slewing mechanism; 1-1, an outer roller; 1-2, supporting the boss; 1-3, an inner roller; 1-4, a heat insulation layer; 2. discharging the material bin; 3. a feeding bin; 4. a heat source; 5. a discharge port; 6. a hopper; 7. a spiral feeder; 8. an exhaust pipe; 9. a scraper; 10. a diversion mechanism; 101. a support plate; 102. a fixing pin; 103. a deflector; 104. a lower limit rod; 105. an upper limit rod; 11. a baffle; 12. and (5) an inclined plane.
Description of the embodiments
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
The drawings in the embodiments of the invention: the different kinds of cross-sectional lines in the drawings are not marked according to national standards, and the material of the elements is not required, so that the cross-sectional views of the elements in the drawings are distinguished.
Referring to fig. 1-7, a high-moisture lignite predrying apparatus integrated in a thermal power plant comprises a rotary mechanism 1 provided with a speed reducer, a discharging bin 2 movably sleeved outside one end of the rotary mechanism 1, a feeding bin 3 movably sleeved outside the other end of the rotary mechanism 1, a heat source 4 communicated with one side of the discharging bin 2, a discharging hole 5 arranged at the bottom of the discharging bin 2, a hopper 6 arranged on one side of the feeding bin 3, a spiral feeder 7 arranged inside the hopper 6 and communicated with one side of the feeding bin 3, and an exhaust pipe 8 arranged at the top of the feeding bin 3, wherein the air flow inside an inner drum 1-3 can be sequentially introduced into a cyclone separator and a dust remover by using the exhaust pipe 8 to carry out filtration treatment on moisture and dust particles contained in the air flow, the treated air flow is discharged from a draught fan, so that the steam air flow can smoothly circulate inside the inner drum 1-3, and a plurality of scraping plates 9 and a diversion mechanism 10 which are distributed in a staggered manner are arranged inside the rotary mechanism 1.
The rotary mechanism 1 comprises an outer roller 1-1 sleeved on the inner sides of a discharging bin 2 and a feeding bin 3, an inner roller 1-3 is fixedly sleeved on the inner side of the outer roller 1-1 through annular equidistant distributed supporting bosses 1-2, the outer roller 1-1 and the inner roller 1-3 can be isolated by the aid of the supporting bosses 1-2, direct contact between the outer roller 1-1 and the inner roller 1-3 is avoided, heat of the inner roller 1-3 is not prone to conducting and dissipating to the outer roller 1-1, a heat insulation layer 1-4 located on the outer side of the supporting bosses 1-2 is filled between the outer roller 1-1 and the inner roller 1-3, heat loss of the inner roller 1-3 can be reduced by means of the heat insulation layer 1-4, the inner side of the inner roller 1-3 is guaranteed to have higher temperature, and moisture in high-moisture lignite is prone to evaporating.
The scraping plates 9 and the flow guiding mechanisms 10 are distributed at intervals, resistance to the high-moisture lignite located inside the inner roller 1-3 can be reduced by adopting the scraping plates 9 and the flow guiding mechanisms 10 to be distributed at intervals, the high-moisture lignite can flow in the lower half part of the inner roller 1-3 conveniently, meanwhile, the scraping plates 9 and the flow guiding mechanisms 10 can be arranged at each small section part inside the inner roller 1-3, and each small section of the inner roller 1-3 can roll over the high-moisture lignite through the scraping plates 9 and guide steam airflow through the flow guiding mechanisms 10.
Wherein, both sides of the scraper 9 are provided with baffle plates 11, and a certain angle is inclined between the baffle plates 11 and the scraper 9.
The six diversion mechanisms 10 are distributed in a group at equal intervals in an annular mode, the groups are distributed in a staggered mode, and the six diversion mechanisms 10 are used for leading the upper half of the inner roller 1-3 to always conduct diversion on steam airflow in the rotating process.
The guide mechanism 10 comprises a supporting plate 101 arranged on the inner side of the inner roller 1-3, a guide plate 103 is rotatably connected to the inner portion of the top end of the supporting plate 101 through a fixing pin 102, a lower limit rod 104 positioned on one side of the supporting plate 101 is arranged on one side of the bottom of the guide plate 103, and an upper limit rod 105 positioned on one side of the supporting plate 101 is arranged on one side of the top of the guide plate 103.
Wherein, the bottom surface of the deflector 103 is provided with symmetrically distributed inclined planes 12, and the inclined planes 12 can reduce the resistance with the high-moisture lignite, even if the deflector 103 positioned at the lower half part of the inner drum 1-3 is tilted under the extrusion of the high-moisture lignite, the high-moisture lignite can flow along the inclined planes 12.
Wherein, the inside of the heat source 4 is provided with an air blower with adjustable air speed, and oxygen-free steam generated by the heat source 4 can be conveyed to the inner side of the inner roller 1-3 by the air blower, so that the high-moisture lignite is heated by the steam, the moisture in the high-moisture lignite is evaporated, the oxygen content of the steam generated by the heat source 4 is less, and the high-moisture lignite is prevented from spontaneous combustion due to heating in the process of drying the high-moisture lignite, so that the dried lignite is protected.
When the drying equipment works, firstly, high-moisture lignite from the coal hopper is conveyed into the hopper 6 through the belt conveyor, and is conveyed into the inner drum 1-3 through the spiral feeder 7 in the hopper 6, at the moment, steam generated by the heat source 4 is introduced into the inner drum 1-3 from the discharge bin 2 of the rotary mechanism 1 under the drive of the blower, the high-moisture lignite is continuously stirred and rolled through the scraper 9 by the rotation of the inner drum 1-3, at the moment, the steam flows to the upper half part along with the inner side of the inner drum 1-3, the upper limit rod 105 can block and guide the air flow, the flow speed of the air flow is slowed down, the steam flows to the lower half part of the inner drum 1-3, the steam and the high-moisture lignite in the inner drum 1-3 are fully contacted, the steam can effectively heat the high-moisture lignite, the moisture in the high-moisture lignite is continuously evaporated, the drying of the high-moisture lignite is realized, when the air flow in the drum flows to the inner drum 3, the cyclone separator and the dust remover are sequentially introduced into the cyclone separator and the dust remover to treat the air flow, the dust in the air flow and the dust is discharged from the rotary mechanism 2 to the discharge bin 2, and the moisture particles in the air flow to the discharge bin 2 are gradually discharged from the rotary mechanism to the discharge bin 2, and the dust is not shown in detail in the prior art, and the prior art is discharged to the discharging device is discharged from the drum to the drum 2.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims (8)

1. The utility model provides an integrated in high moisture brown coal predrying equipment of thermal power factory, including rotary mechanism (1) of installing the speed reducer, suit discharge bin (2) in the one end outside of rotary mechanism (1), the feeding storehouse (3) of suit in the other end outside of rotary mechanism (1), the intercommunication is in heat source (4) of discharge bin (2) one side, discharge gate (5) of setting in discharge bin (2) bottom, set up hopper (6) in feeding storehouse (3) one side and set up in hopper (6) inside and with one side of feeding storehouse (3) be linked together spiral feeder (7) and exhaust pipe (8) of setting at feeding storehouse (3) top, its characterized in that: the inner side of the rotary mechanism (1) is provided with a plurality of scraping plates (9) and a flow guiding mechanism (10) which are distributed in a staggered way.
2. The high-moisture lignite predrying apparatus integrated with a thermal power plant of claim 1 wherein: the rotary mechanism (1) comprises an outer roller (1-1) sleeved on the inner sides of the discharging bin (2) and the feeding bin (3), an inner roller (1-3) is sleeved on the inner side of the outer roller (1-1) through support bosses (1-2) distributed in annular equal intervals, and a heat insulation layer (1-4) positioned on the outer side of the support bosses (1-2) is filled between the outer roller (1-1) and the inner roller (1-3).
3. The high-moisture lignite predrying apparatus integrated with a thermal power plant of claim 1 wherein: the scraping plates (9) and the flow guiding mechanisms (10) are distributed at intervals.
4. The high-moisture lignite predrying apparatus integrated with a thermal power plant of claim 1 wherein: both sides of the scraping plate (9) are provided with baffle plates (11), and a certain angle is formed between the baffle plates (11) and the scraping plate (9).
5. The high-moisture lignite predrying apparatus integrated with a thermal power plant of claim 1 wherein: the six diversion mechanisms (10) are distributed in a group in annular equidistant mode, and the diversion mechanisms are distributed in a staggered mode.
6. The high-moisture lignite predrying apparatus integrated with a thermal power plant of claim 1 wherein: the guide mechanism (10) comprises a supporting plate (101) arranged on the inner side of the inner roller (1-3), a guide plate (103) is rotatably connected to the inside of the top end of the supporting plate (101) through a fixing pin (102), a lower limit rod (104) positioned on one side of the supporting plate (101) is arranged on one side of the bottom of the guide plate (103), and an upper limit rod (105) positioned on one side of the supporting plate (101) is arranged on one side of the top of the guide plate (103).
7. The high-moisture lignite predrying apparatus integrated with a thermal power plant of claim 6 wherein: the bottom surface of the guide plate (103) is provided with inclined planes (12) which are symmetrically distributed.
8. The high-moisture lignite predrying apparatus integrated with a thermal power plant of claim 1 wherein: the inside of the heat source (4) is provided with a blower with adjustable wind speed, and the oxygen content of the steam generated by the heat source (4) is low.
CN202310217768.3A 2023-03-08 2023-03-08 High-moisture lignite predrying equipment integrated to thermal power plant Pending CN116379725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310217768.3A CN116379725A (en) 2023-03-08 2023-03-08 High-moisture lignite predrying equipment integrated to thermal power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310217768.3A CN116379725A (en) 2023-03-08 2023-03-08 High-moisture lignite predrying equipment integrated to thermal power plant

Publications (1)

Publication Number Publication Date
CN116379725A true CN116379725A (en) 2023-07-04

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ID=86977841

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310217768.3A Pending CN116379725A (en) 2023-03-08 2023-03-08 High-moisture lignite predrying equipment integrated to thermal power plant

Country Status (1)

Country Link
CN (1) CN116379725A (en)

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