CN112361367A - High-temperature fluidized furnace - Google Patents
High-temperature fluidized furnace Download PDFInfo
- Publication number
- CN112361367A CN112361367A CN202011431599.6A CN202011431599A CN112361367A CN 112361367 A CN112361367 A CN 112361367A CN 202011431599 A CN202011431599 A CN 202011431599A CN 112361367 A CN112361367 A CN 112361367A
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- Prior art keywords
- air
- pipe
- furnace body
- smoke exhaust
- distribution device
- Prior art date
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- Pending
Links
- 238000009826 distribution Methods 0.000 claims abstract description 37
- 239000000779 smoke Substances 0.000 claims abstract description 27
- 239000000428 dust Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000011343 solid material Substances 0.000 claims abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 16
- 239000003546 flue gas Substances 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 238000005243 fluidization Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000003818 cinder Substances 0.000 claims 1
- 239000003517 fume Substances 0.000 claims 1
- 230000008676 import Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000498 cooling water Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/20—Inlets for fluidisation air, e.g. grids; Bottoms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2213/00—Chimneys or flues
- F23J2213/40—Heat insulation fittings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2213/00—Chimneys or flues
- F23J2213/70—Safety arrangements
Abstract
The invention relates to a high-temperature fluidizing furnace which comprises a furnace body, wherein a high-temperature gas inlet is arranged at the lower end of the furnace body, an air distribution device is arranged in the furnace body and above the high-temperature gas inlet, a plurality of air holes are formed in the air distribution device, a solid material inlet is formed in the side wall of the furnace body and above the air distribution device, a fluidizing region is arranged above the air distribution device, a smoke exhaust pipe is arranged above the fluidizing region, a sealing plate is arranged at the top end of the smoke exhaust pipe, a bypass pipe is arranged on the side wall of the upper end of the smoke exhaust pipe, the outer end of the bypass pipe is connected with a dust collection device, a distance L is formed between the top end of a intersecting line connected with the bypass pipe and the smoke exhaust pipe and the inner end surface of the; the invention prolongs the service life of the discharge flue and the furnace body, and improves the production efficiency and the production quality.
Description
Technical Field
The invention relates to the field of fluidized furnaces, in particular to a high-temperature fluidized furnace.
Background
The high-temperature fluidizing furnace is frequently applied to industrial production, and is mainly used for fluidizing solid materials by high-temperature gas at about 1000 ℃ and then taking the fluidized materials, and the existing fluidizing furnace has the following problems: 1. a large amount of high-temperature flue gas is generated in the fluidization process, the flue gas contains a certain amount of dust, the flow velocity of the flue gas in the discharge flue is generally high, the inner wall of the discharge flue is easily abraded by the dust-containing flue gas when the flue gas is used for a long time, particularly, the abrasion speed of a turning area of the flue is fastest, and once the flue is abraded, the flue gas leaks to cause safety accidents; 2. the high-temperature gas is uniformly blown by the blowing device so as to be fully contacted with the material, the existing blowing device cannot meet the working environment of the high-temperature fluidized furnace, and the blowing effect is poor; 3. solid materials are fed mainly through the screw conveyer, the inner end of the screw conveyer extends into the furnace body and is influenced by high temperature, parts are easy to age, the service life is short, and the damage maintenance rate is high.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems of the conventional high-temperature fluidized furnace, and provides a high-temperature fluidized furnace.
The specific scheme of the invention is as follows: a high-temperature fluidizing furnace comprises a furnace body, wherein a high-temperature gas inlet is formed in the lower end of the furnace body, an air distribution device is arranged in the furnace body and above the high-temperature gas inlet, a plurality of air holes are formed in the air distribution device, a solid material inlet is formed in the side wall of the furnace body and above the air distribution device, a fluidizing region is arranged above the air distribution device, a smoke exhaust pipe is arranged above the fluidizing region, a sealing plate is arranged at the top end of the smoke exhaust pipe, a bypass pipe is arranged on the side wall of the upper end of the smoke exhaust pipe, the outer end of the bypass pipe is connected with a dust collection device, a distance L is formed between the top end of a intersecting line connected with the bypass pipe and the smoke exhaust pipe and the inner end surface of the sealing plate, an; the air distribution device comprises a fixed frame, a fixed frame outer ring and a fluidized furnace body are connected, the fixed frame outer ring is provided with a circle of thermal insulation material, a fixed frame inner ring is provided with an air distribution plate made of a high-temperature-resistant pouring material, a plurality of air holes are formed in the air distribution plate, the air holes penetrate through the air distribution plate along the vertical direction, an air cap is arranged on the upper end of each air hole in a cartridge mode and comprises an air pipe, the bottom end of the air pipe is open, the top end of the air pipe is closed, the top end of the air pipe protrudes out of the side wall of the air distribution plate and the protruding section of the air.
The pipe diameter of the bypass pipe is smaller than that of the smoke exhaust pipe so that smoke can flow in the bypass pipe in an accelerated manner, the dust collection device comprises an accelerating pipe butted with the bypass pipe, the accelerating pipe is vertically downward, an ash receiving hopper is arranged at the bottom end of the accelerating pipe, a smoke inlet and a gas outlet are formed in the top of the ash receiving hopper, the smoke inlet is connected with the accelerating pipe, and a slag discharge port is formed in the bottom of the ash receiving hopper.
The distance L is 0.5-1 m.
The air outlet holes are inclined downwards, and the axial line of the air outlet holes and the horizontal plane form a 10-20 degree angle.
The hood is made of ceramic materials.
The high-temperature resistant castable disclosed by the invention is a corundum castable.
The outer ring of the fixed frame is uniformly provided with a plurality of reinforcing ribs.
The discharge hole is arranged in the center of the air distribution device.
The solid material inlet is provided with a material conveying device, the material conveying device comprises a cylinder, the front end of the cylinder is provided with a feeding hole, the rear end of the cylinder is provided with a discharging hole, the center of the cylinder is provided with a conveying shaft, the outer wall of the conveying shaft is provided with helical blades along the whole length, the front end of the conveying shaft extends out of the cylinder and is provided with a driving mechanism, the inside of the conveying shaft is of a hollow structure, the center of the conveying shaft is provided with a cooling water pipe, the inner end of the cooling water pipe extends to the inner end of the conveying shaft, the inner wall of the conveying shaft is provided with a plurality of supporting frames along the length direction and is used for supporting the cooling water pipe, the supporting frames are movably connected with the cooling water pipe.
The outer wall of the cylinder is provided with an installation plate which is used for connecting a fluidized furnace body, and the front end of the outer wall of the cylinder, which is positioned on the installation plate, is provided with a water cooling jacket.
The support frame comprises a sliding sleeve, three support plates are uniformly distributed on the outer wall of the sliding sleeve, and the end parts of the support plates are fixedly connected with the inner wall of a conveying shaft.
The working principle of the invention is as follows: the dust-containing flue gas flows to the discharge flue above the furnace body and then enters the dust receiving hopper through the bypass pipe, the flue gas has the largest impact force on the sealing cover at the turning position of the discharge flue to the bypass pipe, the sealing cover is the weakest link in the flue, and a part of flue gas is gathered in the air cushion layer area at the top end of the discharge flue through setting the interval L to form an air cushion, so that the impact of the flue gas below on the sealing plate is greatly relieved, the scouring of dust particles on the sealing plate is reduced, and the service life of the whole discharge flue is prolonged;
the flue gas flows through the accelerating tube in an accelerating way, the inertia of solid particles is larger than that of gas, so that most of particles are collected in the ash receiving hopper due to the inertia, and the rest gas flows to the next link through the gas outlet for processing;
the working principle of the air distribution device is as follows: high-temperature air enters the furnace body from the lower part of the air distribution device, then is subjected to air equalization through each air hole, and is finally blown out from the air outlet hole on the side wall at the top end of the air cap, and the air outlet is obliquely and downwards blown to the material on the top surface of the air distribution device, so that the full contact between the high-temperature air and the material is realized;
the working principle of the material conveying device is as follows: the conveying shaft is internally of a hollow structure, circulating water is fed through a cooling water pipe to continuously cool the conveying shaft, and the circulating water enters from the outer end of the cooling water pipe and then is directly communicated to the inner end of the conveying shaft and returns to the water outlet of the rotary joint to flow back; meanwhile, the outer wall of the cylinder is provided with a water cooling jacket, so that the heat conducted from the inside to the outside of the furnace body is reduced.
The invention has the following beneficial effects: 1. the service life of the flue is prolonged; 2. the flow velocity of the dust-containing flue gas is improved through the accelerating tube, so that solid particles are easier to collect in the ash receiving hopper, the treatment efficiency of the high-temperature flue gas is higher, and the manufacturing cost of equipment is low; 3. the air distribution effect is good, and the production efficiency and the production quality are improved; 4. through setting up the transport axle into hollow structure and letting in cooling water, make the temperature of carrying the axle maintain at lower scope, cool off the drum through the water-cooling jacket simultaneously, reduced ageing speed, improved material conveyor's life.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the air distribution device of the present invention;
FIG. 3 is a cross-sectional view of the air distribution apparatus of the present invention;
FIG. 4 is an enlarged view at V of FIG. 3;
FIG. 5 is a front view of the material transfer device of the present invention;
FIG. 6 is a view A-A of FIG. 5;
FIG. 7 is a view B-B of FIG. 6;
in the figure: 101-furnace body, 102-solid material inlet, 104-high-temperature gas inlet, 105-smoke exhaust pipe, 106-air cushion layer, 107-closing plate, 108-bypass pipe, 109-accelerating pipe, 110-ash receiving hopper, 111-gas outlet, 112-slag discharge port, 2-air distribution device, 201-fixed frame, 202-heat insulation material, 203-reinforcing rib, 204-hood, 241-air pipe, 242-air outlet hole, 205-discharge hole, 206-air hole, 207-air distribution plate, 3-material conveying device, 301-rotary joint, 302-bearing seat, 303-conveying shaft, 304-cylinder, 341-feeding port, 342-discharging port, 305-water cooling jacket, 306-mounting plate, 307-helical blade, 308-support frame, 309-cooling water pipe.
Detailed Description
Referring to fig. 1 to 7, the embodiment includes a furnace body 101, a high-temperature gas inlet 104 is arranged at the lower end of the furnace body 101, an air distribution device 2 is arranged above the high-temperature gas inlet 104 in the furnace body 101, a plurality of air holes are arranged on the air distribution device 2, a solid material inlet 102 is arranged on the side wall of the furnace body 101 above the air distribution device 2, a fluidization region is arranged above the air distribution device 2, a smoke discharge pipe 105 is arranged above the fluidization region, a sealing plate 107 is arranged at the top end of the smoke discharge pipe 105, a bypass pipe 108 is arranged on the side wall of the upper end of the smoke discharge pipe 105, the outer end of the bypass pipe 108 is connected with a dust collection device, the top of a intersecting line connecting the bypass pipe 108 and the smoke discharge pipe 105 and the inner end surface of the sealing plate 107 are provided with a distance L, an air cushion layer 106 is formed in the region; air distribution device 2 includes fixed frame 201, and fixed frame 201 outer lane and fluidized bed furnace body coupling, fixed frame 201 outer lane are equipped with round thermal insulation material 202, and fixed frame 201 inner circle is equipped with the grid 207 that the high temperature resistant pouring material made, is equipped with a plurality of wind hole 206 on the grid 207, and wind hole 206 runs through grid 207 along vertical direction, wind hole 206 upper end cartridge has hood 204, and hood 204 includes an tuber pipe 241, and tuber pipe 241 bottom opening, top seal, and the protrusion in tuber pipe 241 top the lateral wall of grid 207 and protruding section is equipped with exhaust vent 242, still is equipped with a relief hole 205 on the grid 207.
In this embodiment, the pipe diameter of the bypass pipe 108 is smaller than that of the smoke discharge pipe 105 so that smoke flows in the bypass pipe 108 at an accelerated speed, the dust collecting device includes an accelerating pipe 109 in butt joint with the bypass pipe 108, the accelerating pipe 109 is vertically downward and the bottom end of the accelerating pipe is provided with an ash receiving hopper 110, the top of the ash receiving hopper 110 is provided with a smoke inlet and a gas outlet 111, the smoke inlet is connected with the accelerating pipe 109, and the bottom of the ash receiving hopper 110 is provided with a slag discharge port 112.
In this embodiment, the distance L is 1 m.
In this embodiment, the air outlet 242 is inclined downward, and the axis of the air outlet 242 is 15 ° to the horizontal plane.
In this embodiment, the hood 204 is made of ceramic.
In this embodiment, the refractory castable is made of corundum castable.
In this embodiment, a plurality of reinforcing ribs 203 are uniformly distributed on the outer ring of the fixing frame 201.
In this embodiment, the discharge hole 205 is disposed in the center of the wind distribution plate 207 and is filled with a discharge pipe made of ceramic.
The material conveying device 3 is installed at the solid material inlet 102 in this embodiment, and includes a cylinder 304, a material inlet 341 is installed at the front end of the cylinder 304, a material outlet 342 is installed at the rear end of the cylinder 304, a conveying shaft 303 is installed in the center of the cylinder 304, a helical blade 307 is installed on the outer wall of the conveying shaft 303 along the full length, the front end of the conveying shaft 303 extends out of the cylinder 304 and is provided with a driving mechanism, the interior of the conveying shaft 303 is of a hollow structure, a cooling water pipe 309 is installed in the center of the conveying shaft 303, the inner end of the cooling water pipe 309 extends to the inner end of the conveying shaft 303, a plurality of support frames 308 are installed on the inner wall of the conveying shaft 303 along the length direction and are used for supporting the cooling water pipe 309, the support frames 308 are movably connected with the cooling water pipe 309, a rotary joint.
In the embodiment, a mounting plate 306 is arranged on the outer wall of the cylinder 304, the mounting plate 306 is used for connecting with the body of the fluidized furnace, and a water cooling jacket 305 is arranged on the front end of the outer wall of the cylinder 304, which is positioned on the mounting plate 306.
This embodiment the support frame 308 includes the sliding sleeve, and the sliding sleeve outer wall equipartition has three backup pads, backup pad tip and carries axle 303 inner wall fixed connection.
Claims (4)
1. The utility model provides a high temperature fluidized furnace, includes the furnace body, and the furnace body lower extreme is equipped with the high-temperature gas entry, is located the high-temperature gas entry top in the furnace body and is equipped with the wind distribution device, is equipped with a plurality of wind hole on the wind distribution device, and the furnace body lateral wall is located the wind distribution device top and is equipped with the solid material import, and the wind distribution device top is equipped with fluidization district, characterized by: a smoke exhaust pipe is arranged above the fluidization area, a sealing plate is arranged at the top end of the smoke exhaust pipe, a bypass pipe is arranged on the side wall of the upper end of the smoke exhaust pipe, the outer end of the bypass pipe is connected with a dust collecting device, a distance L is arranged between the top of an intersecting line connected with the bypass pipe and the smoke exhaust pipe and the inner end surface of the sealing plate, an air cushion layer is formed in the area of the L section in the smoke exhaust pipe in the smoke exhaust process, and the air cushion layer is used for reducing the speed of particles in; the air distribution device comprises a fixed frame, a fixed frame outer ring and a fluidized furnace body are connected, the fixed frame outer ring is provided with a circle of thermal insulation material, a fixed frame inner ring is provided with an air distribution plate made of a high-temperature-resistant pouring material, a plurality of air holes are formed in the air distribution plate, the air holes penetrate through the air distribution plate along the vertical direction, an air cap is arranged on the upper end of each air hole in a cartridge mode and comprises an air pipe, the bottom end of the air pipe is open, the top end of the air pipe is closed, the top end of the air pipe protrudes out of the side wall of the air distribution plate and the protruding section of the air.
2. A high temperature fluidizing furnace as defined in claim 1, wherein: the pipe diameter of bypass pipe is less than the pipe of discharging fume so that the flue gas acceleratees to flow in the bypass pipe, dust arrester installation includes the accelerating tube with the butt joint of bypass pipe, and the accelerating tube is vertical downwards and the bottom is equipped with and connects the ash bucket, connects the ash bucket top to be equipped with flue gas inlet and gas outlet, and flue gas inlet connects the accelerating tube, connects the ash bucket bottom to be equipped with the cinder notch.
3. A high temperature fluidizing furnace as defined in claim 1, wherein: the distance L is 0.5-1 m.
4. A high temperature fluidizing furnace as defined in claim 1, wherein: the air outlet holes are inclined downwards, and the axes of the air outlet holes and the horizontal plane form 10-20 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011431599.6A CN112361367A (en) | 2020-12-10 | 2020-12-10 | High-temperature fluidized furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011431599.6A CN112361367A (en) | 2020-12-10 | 2020-12-10 | High-temperature fluidized furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112361367A true CN112361367A (en) | 2021-02-12 |
Family
ID=74536898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011431599.6A Pending CN112361367A (en) | 2020-12-10 | 2020-12-10 | High-temperature fluidized furnace |
Country Status (1)
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| CN (1) | CN112361367A (en) |
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| CN105154123A (en) * | 2015-07-13 | 2015-12-16 | 河南科技大学 | System for preparing bio-oil through thermal cracking of biomass |
| CN205174808U (en) * | 2015-11-12 | 2016-04-20 | 泰山石膏股份有限公司 | Take isobaric bellows of large -scale hot -blast furnace of strengthening rib compound incubation structure |
| TWM527936U (en) * | 2016-01-11 | 2016-09-01 | Sino Environmental Services Corp | Air distribution duct type fluidization ventilating mechanism |
| CN207539499U (en) * | 2017-09-12 | 2018-06-26 | 昆山工统环保科技有限公司 | A kind of air-cushion type is exempted to wear elbow |
| CN208154467U (en) * | 2017-11-27 | 2018-11-27 | 内蒙古华电乌达热电有限公司 | A kind of boiler furnace grid plate hood |
| CN109321280A (en) * | 2018-11-06 | 2019-02-12 | 安徽科达洁能股份有限公司 | A kind of air-distribution device and its application method of fluidized-bed reactor |
| CN210069832U (en) * | 2019-06-10 | 2020-02-14 | 中国华能集团清洁能源技术研究院有限公司 | A hood for circulating fluidized bed boiler |
| CN110628463A (en) * | 2019-10-28 | 2019-12-31 | 安徽科达洁能股份有限公司 | Mixed air distribution system of gas producer and working method |
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Application publication date: 20210212 |