CN115043569A - Sludge blending combustion system and method for thermal power plant - Google Patents
Sludge blending combustion system and method for thermal power plant Download PDFInfo
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- CN115043569A CN115043569A CN202210716486.3A CN202210716486A CN115043569A CN 115043569 A CN115043569 A CN 115043569A CN 202210716486 A CN202210716486 A CN 202210716486A CN 115043569 A CN115043569 A CN 115043569A
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- 239000010802 sludge Substances 0.000 title claims abstract description 151
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 55
- 238000002156 mixing Methods 0.000 title claims description 13
- 238000000034 method Methods 0.000 title description 9
- 238000001035 drying Methods 0.000 claims abstract description 146
- 230000001737 promoting effect Effects 0.000 claims abstract description 18
- 238000009841 combustion method Methods 0.000 claims abstract description 7
- 210000005056 cell body Anatomy 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 15
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 210000003437 trachea Anatomy 0.000 claims 3
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 15
- 239000003546 flue gas Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005360 mashing Methods 0.000 description 11
- 206010024796 Logorrhoea Diseases 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000011049 filling Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010344 co-firing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention provides a sludge co-combustion system and a sludge co-combustion method for a thermal power plant, and belongs to the technical field of sludge co-combustion treatment. In the mixed combustion system, a drying cylinder is mounted above the top of a boiler through a mounting assembly, an annular cavity is formed in the side wall of the drying cylinder, the bottom of the annular cavity is communicated with the inner side of the top of the boiler through a first hot air pipe, and the top of the annular cavity is connected with one end of a first exhaust pipe; the inner side of the bottom of the drying cylinder is communicated with one end of the sludge transfer unit; the top center of the boiler is connected with the uniform drying component through a connecting component, the top of the uniform drying component is connected with a rotating shaft power component, and the rotating shaft power component is arranged on the mounting component; the three-stage drying unit is arranged on the outer side of the boiler, the bottom of the three-stage drying unit is connected with the vibration falling promoting unit, and the vibration falling promoting unit is arranged on the outer side of the bottom of the boiler. The mixed combustion system can improve the drying effect and efficiency of the sludge, can also improve the mixed combustion treatment effect of the sludge, and fully utilizes the high-temperature flue gas of the boiler.
Description
Technical Field
The invention relates to the technical field of sludge co-combustion treatment, in particular to a sludge co-combustion system and a co-combustion method for a thermal power plant.
Background
With the development of industrialization and the acceleration of urbanization in China, a large amount of industrial sludge and domestic sludge are generated, the sludge has high water content and contains a large amount of pathogenic bacteria, parasitic ova, chromium, mercury and other heavy metal toxic and harmful substances, and the treatment problem of the sludge becomes a large environmental protection problem which needs to be solved urgently in the current society.
At present, most of sludge drying-burning projects of thermal power plants belong to reconstruction projects, and an original boiler cannot directly receive sludge with high water content generally, and is required to be dried and then put into a boiler of the thermal power plant for mixed burning.
However, the existing sludge drying and combustion integrated device still has the following defects: when the water content of the sludge is too high, the drying efficiency of the sludge is low, and the sludge can be used by being mixed and burnt only by being dried for a long time, so that the mixed burning treatment efficiency of the sludge is influenced.
Disclosure of Invention
One of the objectives of the present invention is to provide a sludge blending combustion system for a thermal power plant to solve the above technical problems.
The invention also aims to provide a sludge co-combustion method for a thermal power plant.
The application can be realized as follows:
first aspect, this application provides thermal power factory mud mixes system of burning, including the boiler, the fire door has been seted up to the bottom side of boiler, and thermal power factory mud mixes system of burning still includes: the device comprises a sludge feeding and drying unit, a secondary feeding and drying unit, a tertiary drying unit, a sludge transfer unit and a vibration falling promoting unit;
the sludge feeding and drying unit comprises a first hot air pipe, a drying cylinder, an annular cavity, a mounting assembly and a first exhaust pipe, the drying cylinder is mounted above the top of the boiler through the mounting assembly, the annular cavity is formed in the side wall of the drying cylinder, the bottom of the annular cavity is communicated with the inner side of the top of the boiler through the first hot air pipe, the top of the annular cavity is connected with one end of the first exhaust pipe, and the inner side of the bottom of the drying cylinder is communicated with one end of the sludge transfer unit;
the secondary feeding drying unit is arranged on the connecting assembly and the uniform drying assembly, the top center of the boiler is connected with the uniform drying assembly through the connecting assembly, the top of the uniform drying assembly is connected with the rotating shaft power assembly, and the rotating shaft power assembly is arranged on the mounting assembly;
the three-stage drying unit is arranged on the outer side of the boiler, the bottom of the three-stage drying unit is connected with the vibration falling promoting unit, and the vibration falling promoting unit is arranged on the outer side of the bottom of the boiler.
In an optional embodiment, the uniform drying component comprises a hollow rotating shaft, a spiral feeding blade and a spiral cavity, the middle part in the drying cylinder is rotatably connected with the hollow rotating shaft, the spiral feeding blade is arranged on the side face of the hollow rotating shaft, the spiral cavity is formed in the spiral feeding blade, the spiral cavity is communicated with the inside of the hollow rotating shaft, and the steam interception component is arranged at the top of the hollow rotating shaft.
In optional embodiment, the connecting assembly comprises a second hot air pipe, a lower rotary joint, a second exhaust pipe and an upper rotary joint, the bottom end of the second hot air pipe is connected to the top center of the boiler, the top end of the second hot air pipe is connected with the bottom end of the hollow rotary shaft through the lower rotary joint, the top end of the hollow rotary shaft is connected with one end of the second exhaust pipe through the upper rotary joint, and the second exhaust pipe is connected with the top end of the first exhaust pipe.
In optional embodiment, tertiary stoving unit includes spiral stoving cell body and drum frame, and the outside of boiler is equipped with the vertical spout that is no less than two, and spiral stoving cell body spiral is around in the outside of boiler, and the inboard of spiral stoving cell body be equipped with the vertical sliding connection's of spout draw runner, the outside fixedly connected with drum frame of spiral stoving cell body, the top of spiral stoving cell body is passed through the top baffle and is sealed.
In an optional embodiment, the sludge transfer unit comprises a transfer channel, a transfer shaft, a synchronous power assembly, connecting sleeves, a transfer rod and a transfer disc, the inner side of the bottom of the drying cylinder is communicated with the top of the transfer channel, the bottom of the transfer channel extends downwards and is located on the upper side of the top end of the spiral drying groove body, the bottom of the spiral drying groove body is located on the side face of a furnace opening, the transfer shaft is connected with the transfer shaft in a rotating mode at equal intervals in the transfer channel, the connecting sleeves are connected to the two ends of each transfer shaft through fixing sleeves, the two connecting sleeves are connected to the two ends of the transfer rod respectively, the transfer disc is connected with the transfer disc at equal intervals in the inner side of the transfer rod, through holes are evenly formed in the transfer disc, a side box is installed on one side of the transfer channel, the synchronous power assembly is installed in the side box, and the synchronous power assembly is connected with the transfer shaft.
In an optional embodiment, the vibration falling promoting unit comprises a vibration jacking assembly and a falling back assembly, the vibration jacking assembly comprises a vibration generating motor, a cam and a roller, a wheel seat is mounted at the bottom of the cylindrical frame, the wheel seat rotates the roller through a wheel shaft, a motor mounting ring is fixedly connected to the outer side of the bottom of the boiler, the motor mounting ring is fixedly provided with the vibration generating motor through a side sleeve, an output shaft of the vibration generating motor is connected with the cam, and the cam is in rolling connection with an annular groove on the outer peripheral side of the roller.
In an optional embodiment, the falling back assembly comprises tension springs, the positions, located on two sides of the wheel seat, of the bottom of the cylinder frame are respectively connected with the top ends of the two tension springs through spring fixing columns, the bottom ends of the two tension springs are respectively connected with two spring fixing plates, and the two spring fixing plates are respectively fixed at the bottom of the boiler.
In an optional embodiment, the sludge co-combustion system of the thermal power plant further comprises a sludge smashing component, and the sludge smashing component is arranged on the inner side of the spiral drying groove body at equal intervals.
In optional embodiment, thermal power factory mud mixes burns system still includes that mud mixes burns the control unit, and mud mixes burns the control unit and includes control door plant and door-hinge locking subassembly, and the bottom both sides top of spiral stoving cell body is fixed with the side piece respectively, rotates between two side pieces to be connected with the door-hinge, and the hand wheel is connected to the outer end of door-hinge, and the bottom of door-hinge is connected with the bottom open-ended control door plant that corresponds spiral stoving cell body, and the door-hinge locking subassembly of control door-hinge pivoted is installed to the side piece of front side.
In a second aspect, the invention provides a thermal power plant sludge co-combustion method, which adopts the thermal power plant sludge co-combustion system of any one of the foregoing embodiments to perform co-combustion.
The beneficial effect of this application includes:
1. the sludge to be treated is firstly put into the drying cylinder, high-temperature flue gas generated by combustion in the boiler enters an annular cavity on the side wall of the drying cylinder through a first hot air pipe to heat and dry the sludge in the drying cylinder, then the high-temperature flue gas is discharged through a first exhaust pipe to be treated, the high-temperature flue gas generated by combustion in the boiler can enter a uniform drying assembly through a connecting assembly, the drying area of the sludge can be increased through the uniform drying assembly, the falling speed of the sludge in the drying cylinder is controlled, the drying efficiency is improved, and the sludge with high water content can be effectively treated;
2. the relatively dry sludge is transferred to the third-level drying unit through the sludge transfer unit, and the third-level drying unit is located on the outer side of the boiler and dries the sludge for the third time through the heat radiated outwards by the boiler, so that the sludge suitable for being burnt into the boiler is dried, and the vibration falling promoting unit can promote the falling of the sludge in the third-level drying unit and avoid the slow falling of the sludge in the third-level drying unit.
3. The drying effect and the drying efficiency of the sludge can be improved, the sludge which can be used for drying can be prevented from being dried only by long-time drying, and the mixed burning treatment effect of the sludge is improved;
4. the high-temperature flue gas of the boiler can be fully utilized, so that energy used for drying is saved, and most steam generated by drying can be conveniently recycled.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a sludge co-combustion system of a thermal power plant according to the present invention;
FIG. 2 is a schematic diagram of a side view of a sludge co-combustion system of a thermal power plant according to the present invention;
FIG. 3 is a partial enlarged structural diagram of the sludge co-combustion system of the thermal power plant of the present invention at the position A in FIG. 2;
FIG. 4 is a schematic structural diagram of a sludge transfer unit of the sludge co-combustion system of the thermal power plant of the present invention;
FIG. 5 is a partial structural diagram of a sludge transfer unit of the sludge co-combustion system of the thermal power plant of the present invention;
FIG. 6 is a schematic view of a partial cross-sectional structure of a sludge co-combustion system of a thermal power plant according to the present invention;
FIG. 7 is a schematic view of a partial enlarged structure at B of the sludge co-combustion system in a thermal power plant according to the present invention;
FIG. 8 is a partial structural diagram of a sludge co-combustion control unit of the sludge co-combustion system of the thermal power plant of the present invention.
Icon: 1-a boiler; 2-sludge feeding and drying unit; 21-hot air pipe I; 22-drying cylinder; 23-an annular cavity; 24-a tapered ledge; 25-fixing the sleeve; 26-mounting the spoke; 27-mounting holes; 28-exhaust pipe one; 29-a mud adding groove; 3-a secondary feed drying unit; 31-hot air pipe II; 32-lower swivel joint; 33-hollow rotating shaft; 34-a helical feed blade; 35-a helical cavity; 36-steam block cone cover; 37-a steam treatment pipe; 38-exhaust pipe two; 39-upper rotary joint; 4-a rotating shaft power assembly; 41-motor base; 42-a power motor; 43-long axis; 44-a drive pulley; 45-a drive belt; 46-a driven pulley; 5-a sludge transfer unit; 51-a transfer channel; 52-side box; 53-a transfer motor; 54-a transfer shaft; 55-a sprocket; 56-chain; 57-connecting sleeve; 58-transfer bar; 59-transfer disk; 6-a third-level drying unit; 61-spiral drying groove body; 62-a top baffle; 63-a slide bar; 64-a chute; 65-top fixing ring; 66-vertical connecting rod; 67-bottom fixing ring; 7-vibration drop promoting unit; 71-a motor mounting ring; 72-side sleeve; 73-a shock-generating motor; 74-a cam; 75-wheel seat; 76-axle; 77-a roller; 78-spring retainer plate; 79-tension spring; 710-spring fixation post; 8-a sludge mashing component; 81-a mincing motor; 82-crushing arch bars; 83-crushing the shaft; 9-sludge blending combustion control unit; 91-side block; 92-door spindle; 93-control door panel; 94-a hand wheel; 95-control gear; 96-bottom fixing block; 97-compression spring; 98-a fixture block; 99-side handle; 10-furnace mouth; 11-boiler refueling tank; 12-a separator.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Example 1
Referring to fig. 1 to 8, the present embodiment provides a sludge co-combustion system of a thermal power plant, which includes a boiler 1, and a furnace mouth 10 is opened on a bottom side surface of the boiler 1.
As shown in fig. 1 to 3, the sludge co-combustion system of the thermal power plant further includes a sludge feeding and drying unit 2, a secondary feeding and drying unit 3, a tertiary drying unit 6, a sludge transfer unit 5, and a vibration drop promoting unit 7.
Referring to fig. 1, 2 and 6, the sludge feeding and drying unit 2 includes a first hot air pipe 21, a drying cylinder 22, an annular cavity 23, a mounting assembly and a first exhaust pipe 28, the drying cylinder 22 is mounted above the top of the boiler 1 through the mounting assembly, the annular cavity 23 is formed in the side wall of the drying cylinder 22, the bottom of the annular cavity 23 is communicated with the inner side of the top of the boiler 1 through the first hot air pipe 21, the top of the annular cavity 23 is connected with one end of the first exhaust pipe 28, and the inner side of the bottom of the drying cylinder 22 is communicated with one end of the sludge transfer unit 5.
The top of the drying cylinder 22 is provided with a conical retaining edge 24 to prevent the sludge from overflowing from the top edge of the drying cylinder 22. One side of the conical baffle edge 24 is provided with a sludge adding groove 29 for adding sludge at the sludge adding groove 29, and the sludge enters the drying cylinder 22 along the inner side of the conical baffle edge 24 due to gravity.
As fig. 1, the installation component includes fixed cover 25, installation spoke 26 and mounting hole 27, and fixed cover 25 has been cup jointed to the outside of drying section of thick bamboo 22 fixedly, and the one end of installation spoke 26 is connected to the outside annular array of fixed cover 25, and the other end of installation spoke 26 is provided with the mounting hole 27 that is no less than two, through on the mounting hole 27 mounting bolt is fixed on the transformation support in outside, carries out stable support to drying section of thick bamboo 22.
The second-stage feeding and drying unit 3 is installed on the connecting assembly and the uniform drying assembly, the top center of the boiler 1 is connected with the uniform drying assembly through the connecting assembly, the top of the uniform drying assembly is connected with the rotating shaft power assembly 4, and the rotating shaft power assembly 4 is installed on the installing assembly.
Referring to fig. 2 again, the uniform drying assembly includes a hollow rotating shaft 33, a spiral feeding blade 34 and a spiral cavity 35, the hollow rotating shaft 33 is rotatably connected to the middle portion inside the drying cylinder 22, the spiral feeding blade 34 is disposed on the side surface of the hollow rotating shaft 33, the spiral cavity 35 is disposed inside the spiral feeding blade 34, the spiral cavity 35 is communicated with the inside of the hollow rotating shaft 33, and a steam blocking assembly is disposed at the bottom of the hollow rotating shaft 33.
With reference to fig. 1 and 2, the steam interception assembly comprises a steam shielding conical cover 36 and a steam treatment pipe 37, the bottom of the hollow rotating shaft 33 is fixedly sleeved with the steam shielding conical cover 36, the center top of the steam shielding conical cover 36 is connected with one end of the steam treatment pipe 37, the other end of the steam treatment pipe 37 is connected with steam treatment equipment, and steam mixed with toxic gas in sludge is prevented from being discharged.
High-temperature flue gas enters the hollow rotating shaft 33 and then enters the spiral cavity 35, so that the hollow rotating shaft 33 and the spiral feeding blade 34 are in a high-temperature state, the spiral feeding blade 34 and the hollow rotating shaft 33 increase the contact area with sludge in the drying cylinder 22, and the rotating shaft power assembly 4 drives the hollow rotating shaft 33 and the spiral feeding blade 34 to rotate so as to control the falling of the sludge, thereby avoiding the problem that the sludge is dried and fails due to the fact that the sludge passes through the drying cylinder 22 quickly. And, adopt the high temperature flue gas in the boiler to dry, do not need extra energy, steam interception subassembly can intercept a large amount of steam of two preceding stoving departments, makes things convenient for the steam of mud evaporation department to collect the processing, avoids the harmful substance in the steam to discharge out.
Referring to fig. 1 and 2, the connecting assembly includes a second hot air pipe 31, a lower rotary joint 32, a second exhaust pipe 38 and an upper rotary joint 39, the bottom end of the second hot air pipe 31 is connected to the top center of the boiler 1, the top end of the second hot air pipe 31 is connected to the bottom end of the hollow rotating shaft 33 through the lower rotary joint 32, the top end of the hollow rotating shaft 33 is connected to one end of the second exhaust pipe 38 through the upper rotary joint 39, and the second exhaust pipe 38 is connected to the top end of the first exhaust pipe 28.
The lower rotary joint 32 and the upper rotary joint 39 are pipe connection devices, and the connected pipes can rotate relatively.
The lower rotary joint 32 and the upper rotary joint 39 can allow the hollow rotary shaft 33 to keep the connection effectiveness with the pipelines at the two ends when rotating, hot gas in the boiler 1 enters the hollow rotary shaft 33 through the hot gas pipe II 31 and the lower rotary joint 32 and is then discharged through the exhaust pipe II 38, and used flue gas in the exhaust pipe II 38 and the exhaust pipe I28 is mixed, so that the subsequent treatment of the flue gas is facilitated.
Referring to fig. 1, the rotating shaft power assembly 4 includes a motor base 41, a power motor 42, a long shaft 43, a driving pulley 44, a transmission belt 45 and a driven pulley 46, the side surface of the fixed sleeve 25 is fixedly connected with the power motor 42 through the motor base 41, the top output shaft of the power motor 42 is connected with the bottom end of the long shaft 43, the top end of the long shaft 43 is connected with the driving pulley 44, the top of the hollow rotating shaft 33 is fixedly connected with the driven pulley 46, and the driven pulley 46 is in transmission connection with the driving pulley 44 through the transmission belt 45.
The power motor 42 works to drive the long shaft 43 and the driving belt pulley 44 to rotate, and the driven belt pulley 46 is driven to rotate through the rotation of the transmission belt 45, so that the hollow rotating shaft 33 and the spiral feeding blade 34 are driven to rotate in the drying cylinder 22, the falling speed of sludge can be controlled through the rotating speed, and meanwhile, the sludge can stably move downwards, and the sludge is promoted to be transferred out through the sludge transfer unit 5.
The three-stage drying unit 6 is arranged on the outer side of the boiler 1, the bottom of the three-stage drying unit 6 is connected with the vibration falling promoting unit 7, and the vibration falling promoting unit 7 is arranged on the outer side of the bottom of the boiler 1.
Referring to fig. 1 and 2, tertiary stoving unit 6 includes spiral stoving cell body 61, top baffle 62, draw runner 63, spout 64 and cylinder frame, and the outside of boiler 1 is equipped with the vertical spout 64 that is no less than two, and spiral stoving cell body 61 spiral is around the outside of boiler 1, and the inboard of spiral stoving cell body 61 is equipped with the draw runner 63 with the vertical sliding connection of spout 64, and the outside fixedly connected with cylinder frame of spiral stoving cell body 61, and the top of spiral stoving cell body 61 is sealed through top baffle 62.
The cylinder frame comprises a top fixing ring 65, a vertical connecting rod 66 and a bottom fixing ring 67, the bottom of the top fixing ring 65 is connected with the top of the bottom fixing ring 67 through the vertical connecting rod 66 in an annular array, the vertical connecting rod 66 is fixed on the outer side of the spiral drying groove body 61, the top fixing ring 65, the vertical connecting rod 66 and the bottom fixing ring 67 form a stable cylinder frame, the structural strength of the spiral drying groove body 61 is improved, and the spiral drying groove body 61 is prevented from containing too much sludge to cause deformation.
The bottom of spiral stoving cell body 61 is located the outside of fire door 10, and boiler fuel filling groove 11 is connected to the outer end of fire door 10, and the middle part is provided with baffle 12 in boiler fuel filling groove 11, and baffle 12 separates boiler fuel filling groove 11 for two charging channel, and a charging channel passes through fuel, and another corresponds spiral stoving cell body 61's bottom for through the mud grain after the drying.
In the structure, spiral stoving cell body 61 spiral is around the outside of boiler 1, can effectively utilize the heat of boiler 1 external radiation, the drum frame can be fixed the outside of spiral stoving cell body 61, still can guarantee stable in structure indeformable after guaranteeing to hold a lot of mud in the spiral stoving cell body 61, draw runner 63, spout 64 can make spiral stoving cell body 61 can vertical activity, conveniently carry out vertical vibrations operation to spiral stoving cell body 61, do benefit to the whereabouts of being dried mud in the spiral stoving cell body 61.
Referring to fig. 1, 4 and 5, the sludge transfer unit 5 includes a transfer passage 51, a side box 52, a transfer shaft 54, a synchronous power assembly, a connection sleeve 57, a transfer lever 58 and a transfer tray 59. The inside intercommunication of the bottom of a stoving section of thick bamboo 22 shifts the top of passageway 51, the bottom of shifting passageway 51 extends downwards and is located the top upside of spiral stoving cell body 61, the bottom of spiral stoving cell body 61 is located the fire door 10 side, equidistant rotation is connected with the transfer axle 54 in shifting passageway 51, the both ends of every transfer axle 54 are through fixed cover connect with adapter sleeve 57, two adapter sleeves 57 are connected respectively to the both ends of transfer pole 58, and the inboard equidistance of transfer pole 58 is connected with the transfer dish 59, the through-hole has evenly been seted up on the transfer dish 59, and shift the side box 52 of one side of passageway 51 and install the synchronous power subassembly in the side box 52, the synchronous power subassembly connects and shifts axle 54.
With continued reference to fig. 4, the synchronous power assembly includes a transfer motor 53, a chain wheel 55, and a chain 56, an end of each transfer shaft 54 extends into the side box 52 and is connected to the chain wheel 55, the chain wheel 55 is in transmission connection with the chain 56, one of the transfer shafts 54 extends to the outside of the side box 52 and is connected to an output shaft of the transfer motor 53, the transfer motor 53 is fixed to the outside of the side box 52, the transfer shaft 54 is driven to rotate by the operation of the transfer motor 53, and the transfer shafts 54 are synchronously rotated in the same direction by the synchronous transmission of the chain wheel 55 and the chain 56.
The sludge dried at the bottom of the drying cylinder 22 becomes hard, the spiral feeding blade 34 pushes the sludge to enter the transfer channel 51, the synchronous power assembly works to drive the transfer shaft 54 in the transfer channel 51 to rotate, then the transfer rod 58 is driven to rotate through the connecting sleeve 57, the transfer rod 58 stirs and smashes the hard sludge, the stirring and smashing effect on the sludge can be improved through the transfer disc 59, the air permeability of the transfer disc 59 can be realized through the through hole, the phenomenon that the side surface of the transfer disc 59 with a large cross section is stuck with excessive sludge is avoided, and the side box 52 protects the synchronous power assembly.
In the method, sludge to be treated is firstly put into a drying cylinder 22, high-temperature flue gas generated by combustion in a boiler 1 enters an annular cavity 23 on the side wall of the drying cylinder 22 through a hot air pipe 21, the sludge in the drying cylinder 22 is heated and dried, then the high-temperature flue gas is discharged through an exhaust pipe 28 for post-treatment, the high-temperature flue gas generated by combustion in the boiler 1 can enter an even drying component through a connecting component, the drying area of the sludge can be increased through the even drying component, the falling speed of the sludge in the drying cylinder 22 is controlled, the drying efficiency is improved, the sludge with high water content can be effectively treated, the relatively dry sludge is transferred to a three-stage drying unit 6 through a sludge transfer unit 5, and the sludge is dried for the third time through heat radiated outwards by the boiler 1 because the three-stage drying unit 6 is positioned outside the boiler 1, so that the sludge suitable for being mixed and burnt into the boiler 1 is dried, the vibration falling promoting unit 7 can promote the falling of the sludge in the third-level drying unit 6, and the slow falling of the sludge in the third-level drying unit 6 is avoided.
Further, the sludge co-combustion system of the thermal power plant further comprises a vibration drop promoting unit 7.
Referring to fig. 2 and 3, the shock landing unit 7 includes a shock jack assembly including a motor mounting ring 71, a side sleeve 72, a shock generating motor 73, a cam 74, a wheel seat 75, a wheel shaft 76, and a roller 77, and a fall back assembly. The bottom of the cylinder frame is provided with a wheel seat 75, the wheel seat 75 rotates a roller 77 through a wheel shaft 76, the outer side of the bottom of the boiler 1 is fixedly connected with a motor mounting ring 71, the motor mounting ring 71 is fixedly provided with a vibration generating motor 73 through a side sleeve 72, the output shaft of the vibration generating motor 73 is connected with a cam 74, and the cam 74 is in rolling connection with an annular groove on the outer peripheral side of the roller 77.
The motor mounting ring 71 and the side sleeve 72 are used for fixedly mounting the vibration generating motor 73, the vibration generating motor 73 works to drive the cam 74 to rotate, and the roller 77 in the roller seat 75 can be pushed to move up and down while rolling due to the irregularity of the cam 74, so that the spiral drying groove body 61 is driven to move up and down through the cylindrical frame, the spiral drying groove body 61 can form a vibration effect, and the spiral falling of sludge in the spiral drying groove body 61 is promoted. Make gyro wheel 77 and the stable cooperation of cam 74 through the ring channel, the subassembly that falls back makes stable gliding along spout 64 of spiral drying groove body 61, avoids leading to the fact spiral drying groove body 61 can not fall down because frictional force is too big, ensures that the stability of vibrations goes on.
The fall back assembly includes a spring retaining plate 78, a tension spring 79 and a spring retaining post 710. The positions of the bottom of the cylindrical frame, which are positioned at the two sides of the wheel seat 75, are respectively connected with the top ends of the two tension springs 79 through the spring fixing columns 710, the bottom ends of the two tension springs 79 are respectively connected with the two spring fixing plates 78, the two spring fixing plates 78 are respectively fixed at the bottom of the boiler 1, the spring fixing plates 78 and the spring fixing columns 710 are stably fixed to the two ends of the tension springs 79, the cylindrical frame has a stable downward trend through the tension of the tension springs 79, and the cylindrical frame is prevented from falling stably.
Further, the sludge blending combustion system of the thermal power plant further comprises a sludge mincing component 8.
Referring to fig. 6, the mud is stirred garrulous subassembly 8 to the inboard equidistance of spiral drying tank body 61, and mud is stirred garrulous subassembly 8 and is stirred garrulous processing to the mud in the spiral drying tank body 61, and convenient subsequent blending burns, stirs the whereabouts that can promote spiral drying tank body 61 mud simultaneously, and reverse stirring then can delay the whereabouts of mud, increases the stoving time of mud in proper order.
With reference to fig. 6 and 7, the sludge mashing assembly 8 includes the mashing motor 81, the mashing arch rod 82 and the mashing shaft 83, the mashing shaft 83 is rotatably connected to the inner side of the spiral drying tank 61 at equal intervals, the side surface of the mashing shaft 83 is fixedly connected with the mashing arch rod 82 at equal angles, the mashing motor 81 is connected to one end of the mashing shaft 83, and the mashing motor 81 is fixed to the outer side of the spiral drying tank 61.
Wherein stirring garrulous motor 81 adopts servo motor, can just reverse rotation, can drive stirring garrulous axle 83 and crushing arch-shaped pole 82 anticlockwise rotation when stirring garrulous motor 81 clockwise rotation and stir mud, can also slow down the gliding speed of mud in spiral drying tank body 61 at the in-process of stirring garrulous mud this moment, when stirring garrulous motor 81 anticlockwise rotation, can also accelerate the gliding speed of mud in spiral drying tank body 61 at the in-process of stirring garrulous mud this moment.
Further, the sludge co-combustion system of the thermal power plant further comprises a sludge co-combustion control unit 9.
Referring to fig. 7 and 8, the sludge blending combustion control unit 9 includes a side block 91, a door shaft 92, a control door plate 93, a hand wheel 94 and a door shaft stop assembly. Side blocks 91 are respectively fixed at the tops of two sides of the bottom end of the spiral drying groove body 61, a door shaft 92 is rotatably connected between the two side blocks 91, a hand wheel 94 is connected at the outer end of the door shaft 92, a control door plate 93 corresponding to the bottom end opening of the spiral drying groove body 61 is connected at the bottom of the door shaft 92, and a door shaft locking assembly for controlling the rotation of the door shaft 92 is installed on the side block 91 at the front side.
The door shaft 92 is controlled through the door shaft stopping component, so that the opening and closing stirring of the door plate 93 is controlled, the falling speed of crushed aggregates after the sludge is dried is controlled, the amount of the mixed combustion in the boiler is controlled, and the hand wheel 94 is convenient for rotating the door shaft 92.
As shown in fig. 8, the door shaft stopper assembly includes a control gear 95, a bottom fixing block 96, a compression spring 97, a latch 98, and a side handle 99. A control gear 95 is fixed at the front position of the front side block 91 of the door shaft 92, a bottom fixed block 96 is fixed at the bottom of the front side block 91, the top of the bottom fixed block 96 is connected with a fixture block 98 through a compression spring 97, the fixture block 98 is pushed to be clamped into the side surface of the control gear 95 under the action of the elastic force of the compression spring 97, and side handles 99 are respectively arranged at two sides of the fixture block 98.
Can drop fixture block 98 through the side to 99, can make compression spring 97 compressed, fixture block 98 breaks away from with control gear 95, conveniently rotate door-hinge 92 through hand wheel 94 this moment, the control door plant 93 is to the open and shut degree of the bottom open-ended of spiral drying cell body 61, the whereabouts volume of control mud grain, loosen the side to 99, compression spring 97 kick-backs and makes fixture block 98 joint control gear 95 again, control door plant 93 is in stable state once more this moment, do not need the operating personnel to hold hand wheel 94 control door plant 93 in real time.
Example 2
The embodiment provides a sludge co-combustion method for a thermal power plant, and particularly adopts the sludge co-combustion method for the thermal power plant provided in the embodiment 1 to perform the co-combustion.
As a reference, the co-firing process may include the following steps:
the method comprises the following steps: putting sludge to be treated into a drying cylinder 22, feeding hot flue gas in the boiler 1 into an annular cavity 23 through a hot gas pipe I21, heating the side wall of the drying cylinder 22, and primarily drying the sludge by the drying cylinder 22;
step two: hot flue gas in the boiler 1 enters a hollow rotating shaft 33 through a lower rotary joint 32 and then spreads into a spiral cavity 35 of a spiral feeding blade 34, a rotating shaft power assembly 4 drives the spiral feeding blade 34 to rotate in a drying cylinder 22, the falling speed of sludge in the drying cylinder 22 is controlled, and meanwhile, the sludge is dried for the second time by virtue of heat in the hollow rotating shaft 33 and the spiral feeding blade 34;
step three: the sludge falls through a transfer channel 51 in the sludge transfer unit 5, a synchronous power assembly drives a transfer shaft 54 to rotate in the transfer channel 51, and the secondarily dried sludge is scattered through a transfer disc 59 on a connecting sleeve 57 and then falls into the top of a spiral drying tank body 61;
step four: the scattered sludge continuously falls in the spiral drying tank body 61, and the scattered sludge in the spiral drying tank body 61 is dried again by the heat radiated outwards from the side surface of the boiler 1;
step five: the sludge crushing component 8 crushes sludge falling in the spiral drying groove body 61, and simultaneously stirs the sludge to ensure that the sludge is dried at various angles;
step six: controlling the spiral drying groove body 61 to vibrate up and down by a vibration jacking assembly in the vibration falling promoting unit 7, ensuring the spiral drying groove body 61 to normally fall back by a falling assembly, and enabling the sludge crushed inside to stably fall down by the vibration of the spiral drying groove body 61;
step seven: the handwheel 94 in the sludge blending combustion control unit 9 is used for twisting the door shaft 92, and the control door plate 93 is controlled to control the size of the bottom opening of the spiral drying groove body 61, so as to control the sludge blending combustion amount.
It should be noted that the input terminals of the power motor 42, the transfer motor 53, the vibration generation motor 73, and the mincing motor 81 disclosed in the above embodiments are electrically connected to the output terminal of the external power source through the external PLC controller, the power motor 42, the transfer motor 53, and the mincing motor 81 all use servo motors, the vibration generation motor 73 uses a three-phase asynchronous motor, and the external PLC controller controls the power motor 42, the transfer motor 53, the vibration generation motor 73, and the mincing motor 81 to operate by a method commonly used in the prior art.
In conclusion, the sludge co-combustion system and method for the thermal power plant can improve the drying effect and drying efficiency of sludge, avoid long-time drying to dry available sludge, improve the co-combustion treatment effect of sludge, make full use of high-temperature flue gas of the boiler 1, save energy for drying, and facilitate recovery of most steam generated by drying.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. Thermal power factory mud mixes system of burning, including the boiler, the fire door has been seted up to the bottom side of boiler, its characterized in that, thermal power factory mud mixes system of burning still includes: the device comprises a sludge feeding and drying unit, a secondary feeding and drying unit, a tertiary drying unit, a sludge transfer unit and a vibration falling promoting unit;
the sludge feeding and drying unit comprises a first hot air pipe, a drying cylinder, an annular cavity, a mounting assembly and a first exhaust pipe, the drying cylinder is mounted above the top of the boiler through the mounting assembly, the annular cavity is formed in the side wall of the drying cylinder, the bottom of the annular cavity is communicated with the inner side of the top of the boiler through the first hot air pipe, the top of the annular cavity is connected with one end of the first exhaust pipe, and the inner side of the bottom of the drying cylinder is communicated with one end of the sludge transfer unit;
the secondary feeding and drying unit is arranged on the connecting assembly and the uniform drying assembly, the top center of the boiler is connected with the uniform drying assembly through the connecting assembly, the top of the uniform drying assembly is connected with the rotating shaft power assembly, and the rotating shaft power assembly is arranged on the mounting assembly;
the three-stage drying unit is arranged on the outer side of the boiler, the bottom of the three-stage drying unit is connected with the vibration falling promoting unit, and the vibration falling promoting unit is arranged on the outer side of the bottom of the boiler.
2. The sludge co-combustion system of a thermal power plant according to claim 1, wherein: the even stoving subassembly includes hollow pivot, spiral feed blade and spiral cavity, the middle part is rotated and is connected with hollow pivot in the section of thick bamboo of drying, the side of hollow pivot is provided with spiral feed blade, the spiral cavity has been seted up to spiral feed blade's inside, the spiral cavity communicates with the inside of hollow pivot, the top of hollow pivot is provided with steam interception subassembly.
3. The thermal power plant sludge co-combustion system as claimed in claim 2, wherein: the coupling assembling includes hot trachea two, lower rotary joint, two and the upper rotary joint of blast pipe, the bottom of hot trachea two is connected at the top center of boiler, the bottom of hollow pivot is connected through lower rotary joint in the top of hot trachea two, the one end of second blast pipe is connected through upper rotary joint in the top of hollow pivot, the top of blast pipe one is connected to blast pipe two.
4. The sludge co-combustion system of a thermal power plant according to claim 1, wherein: tertiary stoving unit includes spiral stoving cell body and drum frame, the outside of boiler is equipped with and is no less than two vertical spout, spiral stoving cell body spiral is around in the outside of boiler, and the inboard of spiral stoving cell body be equipped with the vertical sliding connection's of spout draw runner, the outside fixedly connected with drum frame of spiral stoving cell body, the top of spiral stoving cell body is passed through the top baffle and is sealed.
5. The thermal power plant sludge co-combustion system as claimed in claim 4, wherein: mud shifts the unit including shifting passageway, transfer axle, synchronous power subassembly, adapter sleeve, transfer pole and transfer dish, the top of the inboard intercommunication transfer passageway in bottom of a stoving section of thick bamboo, the bottom downwardly extending who shifts the passageway just is located the top upside of spiral stoving cell body, the bottom of spiral stoving cell body is located the fire door side, equidistant rotation is connected with the transfer axle in the transfer passageway, and the adapter sleeve has been cup jointed through fixed cover at the both ends of every transfer axle, two adapter sleeves are connected respectively at the both ends of transferring the pole, and the inboard equidistance of transferring the pole is connected with the transfer dish, the through-hole has evenly been seted up on the transfer dish, and the side box is installed to one side of transferring the passageway, install synchronous power subassembly in the side box, synchronous power subassembly connects the transfer axle.
6. The thermal power plant sludge co-combustion system as claimed in claim 4, wherein: the vibration landing promoting unit comprises a vibration jacking assembly and a falling assembly, the vibration jacking assembly comprises a vibration generating motor, a cam and a roller, a wheel seat is installed at the bottom of the cylinder frame, the wheel seat rotates the roller through a wheel shaft, a motor mounting ring is fixedly connected to the outer side of the bottom of the boiler, the motor mounting ring is fixedly provided with the vibration generating motor through a side sleeve, an output shaft of the vibration generating motor is connected with the cam, and the cam is in rolling connection with a ring groove on the outer peripheral side of the roller.
7. The thermal power plant sludge co-combustion system as claimed in claim 6, wherein: the falling assembly comprises tension springs, the positions, located on the two sides of the wheel seat, of the bottom of the cylinder frame are respectively connected with the top ends of the two tension springs through spring fixing columns, the bottom ends of the two tension springs are respectively connected with two spring fixing plates, and the two spring fixing plates are respectively fixed at the bottom of the boiler.
8. The thermal power plant sludge co-combustion system as claimed in claim 4, wherein: the sludge blending combustion system of the thermal power plant further comprises sludge stirring assemblies, and the sludge stirring assemblies are arranged on the inner side of the spiral drying groove body at equal intervals.
9. The thermal power plant sludge co-combustion system as claimed in claim 4, wherein: the sludge blending combustion system of the thermal power plant further comprises a sludge blending combustion control unit, the sludge blending combustion control unit comprises a control door plate and a door spindle locking assembly, side blocks are fixed to the tops of two sides of the bottom end of the spiral drying groove body respectively, a door spindle is connected between the two side blocks in a rotating mode, the outer end of the door spindle is connected with a hand wheel, the bottom of the door spindle is connected with a control door plate corresponding to the bottom end opening of the spiral drying groove body, and the door spindle locking assembly for controlling the rotation of the door spindle is installed on the side block of the front side.
10. A sludge co-combustion method of a thermal power plant is characterized in that the sludge co-combustion system of the thermal power plant according to any one of claims 1 to 9 is adopted for co-combustion.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB186370A (en) * | 1921-05-02 | 1922-10-02 | Samuel Buxton | Improvements in or relating to drying systems |
| CN103398387A (en) * | 2013-08-16 | 2013-11-20 | 南京创能电力科技开发有限公司 | Automatic sludge blending combustion system |
| CN104016564A (en) * | 2014-06-23 | 2014-09-03 | 王子国 | Sludge multi-effect drying incineration treatment system and application method thereof |
| CN108561888A (en) * | 2018-06-27 | 2018-09-21 | 广东电网有限责任公司 | A kind of coal-burning power plant's sludge co-combustion system |
| CN112460610A (en) * | 2020-12-09 | 2021-03-09 | 西安西热控制技术有限公司 | Thermal power plant mixes burning mud and removes foul smell system |
-
2022
- 2022-06-22 CN CN202210716486.3A patent/CN115043569B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB186370A (en) * | 1921-05-02 | 1922-10-02 | Samuel Buxton | Improvements in or relating to drying systems |
| CN103398387A (en) * | 2013-08-16 | 2013-11-20 | 南京创能电力科技开发有限公司 | Automatic sludge blending combustion system |
| CN104016564A (en) * | 2014-06-23 | 2014-09-03 | 王子国 | Sludge multi-effect drying incineration treatment system and application method thereof |
| CN108561888A (en) * | 2018-06-27 | 2018-09-21 | 广东电网有限责任公司 | A kind of coal-burning power plant's sludge co-combustion system |
| CN112460610A (en) * | 2020-12-09 | 2021-03-09 | 西安西热控制技术有限公司 | Thermal power plant mixes burning mud and removes foul smell system |
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