CN110986076A - Radial flow-back heat accumulation type air preheater - Google Patents
Radial flow-back heat accumulation type air preheater Download PDFInfo
- Publication number
- CN110986076A CN110986076A CN201911375816.1A CN201911375816A CN110986076A CN 110986076 A CN110986076 A CN 110986076A CN 201911375816 A CN201911375816 A CN 201911375816A CN 110986076 A CN110986076 A CN 110986076A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- rotor
- radial flow
- cold
- air preheater
- 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.)
- Granted
Links
- 238000009825 accumulation Methods 0.000 title description 2
- 239000003546 flue gas Substances 0.000 claims abstract description 101
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 99
- 238000007789 sealing Methods 0.000 claims description 73
- 230000001172 regenerating effect Effects 0.000 claims description 30
- 238000005192 partition Methods 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 239000011449 brick Substances 0.000 claims description 7
- 238000010926 purge Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 5
- 239000002918 waste heat Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 32
- 239000010959 steel Substances 0.000 description 32
- 238000005338 heat storage Methods 0.000 description 17
- 239000000779 smoke Substances 0.000 description 13
- 238000004321 preservation Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/02—Arrangements of regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a radial flow-back heat-accumulating type air preheater which comprises a fixed base, wherein a vertically-arranged rotary bearing is arranged above the fixed base, a cold flue gas channel and a cold air channel which are mutually independent are arranged in the rotary bearing, a rotor is sleeved outside the rotary bearing, a shell is arranged on the outer surface of the rotor, a heat accumulator is arranged in the rotor, and a hot flue gas channel connected with the cold flue gas channel and a hot air channel connected with the cold air channel are formed in the heat accumulator along the radial direction. The invention solves the problems of large floor area of the common heat accumulating type air preheater or large pressure loss after the heat accumulator is piled up by adopting a radial flow mode for flue gas and air, the floor space of the preheater is relatively fixed, the pressure drop loss is basically fixed, and the heat exchange requirements of a large-flue gas volume and high-power waste heat recovery system can be met by properly heightening equipment.
Description
Technical Field
The invention relates to the field of flue gas waste heat recovery, in particular to a radial flow-back heat accumulating type air preheater.
Background
The rotary heat accumulating type air preheaters applied to the market at present have two support modes, one mode is that a large rotary bearing or a riding wheel set is used for supporting, and smoke and air flow in a reverse flow manner and flow in parallel to the axial direction of a rotary shaft; the other is supported by a central shaft mode, and the smoke and the air flow in a counter-flow mode and flow in parallel to the axial direction of the rotating shaft. The two modes have working conditions which are not suitable for high power, and the main reason is that when the heat exchange power is high, the required heat accumulator is influenced by the stack height in the rotor, and the higher the stack height of the heat accumulator is, the larger the pressure drop loss of the preheater is. Therefore, the rotor needs to be designed to be large, the larger the diameter of the rotor is, the larger the structural stress deformation is, the more difficult the sealing is, the air leakage is increased, the preheater efficiency is reduced, and the processing and transportation difficulty is increased greatly when the diameter of the rotor is larger;
the development and application of the regenerative air preheater are greatly related to the development of a sealing technology, the hard sealing technology is monopolized abroad all the time, most devices (such as refining and chemical enterprises) in China have large working condition change due to the influence of factors such as raw material change, unstable yield and the like, a harsh environment is formed for the operation of a rotary regenerative air preheater rotor, and the preheater generally has large air leakage; the brush type sealing technology introduced in recent years can effectively compensate the deformation influence of a rotor, but the effect is always good and inconsistent due to the influence of the design technology and the manufacturing technology of various manufacturers, and the popularization and the application of the regenerative air preheater are limited.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
In view of the above technical problems in the related art, the present invention provides a radial flow back-to-back regenerative air preheater, which can solve the above problems.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
the utility model provides a radial flow returns regenerative air preheater, includes unable adjustment base, unable adjustment base's top is provided with the slewing bearing of vertical setting, be provided with mutually independent cold flue gas passageway and cold air passageway in the slewing bearing, the slewing bearing overcoat is equipped with the rotor, the rotor surface is provided with the shell, be provided with the heat accumulator in the rotor, the heat accumulator is formed with along radial direction and connects the hot flue gas passageway of cold flue gas passageway and the hot air passageway of connecting the cold air passageway.
Further, the rotor is of an annular rotary cage structure, the rotor is vertically divided into a plurality of heat storage chambers, and each heat storage chamber is a same sector.
Furthermore, the rotor comprises a top ring plate, a sealing arc plate, a heat storage chamber partition plate, a ring plate, a supporting rib plate and a base mounting plate.
Further, an axial sealing module is vertically arranged between the rotor and the rotary bearing and between the rotor and the shell.
Further, the top and the bottom of the rotor are provided with circumferential sealing components.
Furthermore, a steam purging pipe is arranged in the hot flue gas channel.
Furthermore, a condensation discharge pipe is arranged in the cold flue gas channel.
Furthermore, a manhole door is arranged on a sealing plate at the top of the cold flue gas channel.
Furthermore, a motor and a speed reducer assembly which drive the rotor to rotate are arranged on the fixed base.
Furthermore, the heat accumulator is made of porous ceramic bricks.
The fixed base is supported on the ground by a steel structure, a rotary bearing is installed on the steel structure of the fixed base, the fixed base is of a hollow pipeline structure, the interior of the fixed base is divided into two parts by a partition plate and a sealing module, one part is a cold flue gas channel and is responsible for leading cold flue gas after heat exchange in the rotor out of the preheater; one part is a cold air channel which is responsible for sending cold air into the rotor. The rotor is loaded with a heat accumulator, the bottom of the rotor is supported on a steel structure of the fixing base through a rotary bearing, and the rotor is of an annular rotary cage type structure and surrounds the fixing base to wrap the fixing base. The rotor is outside to be the shell, and the shell is hollow shell dress structure, supports subaerial by the steel construction, and the shell parcel is outside at the rotor to be divided into two parts by sealed module, partly be hot flue gas passageway, be responsible for with the leading-in rotor of hot flue gas, another part is hot air channel, is responsible for exporting the pre-heater with the hot-air after the heat transfer in the rotor. The motor speed reducer is installed on unable adjustment base, is furnished with the pinion on the speed reducer, and with the outer ring gear meshing of slewing bearing, when the motor is rotatory, the pinion drives the outer ring gear rotation of slewing bearing to the rotor of installation rotates together on the outer ring gear, then, the heat accumulator that the rotor loaded is in the continuous motion switching of air side and flue gas side.
The shell and the fixed base are relatively fixed, the hot smoke channel corresponds to the cold smoke channel, and the hot air channel corresponds to the cold air channel. Hot flue gas continuously flows to the rotor from the outer circumference direction after entering a hot flue gas channel of the shell, and horizontally flows along the radial direction, enters each heat storage chamber of the rotor covered by the coverage area of the hot flue gas channel, passes through a heat storage body in the heat storage chamber to heat the heat storage body, and cold flue gas after heat exchange enters a cold flue gas channel of the fixed base to complete the heat exchange process of the flue gas, wherein the process is characterized in that the flue gas horizontally flows along the radial direction and flows to the axis from the outer circumference; the cold air enters the cold air channel of the fixed base, continuously flows to the rotor from the inner circumference direction, horizontally flows along the radial direction, enters each heat storage chamber of the rotor in the coverage area of the cold air channel, passes through the heat storage bodies in the heat storage chambers, absorbs the heat of the heat storage bodies, and enters the hot air channel of the shell after heat exchange to complete the heat exchange process of the air.
The rotor is an annular rotary cage structure and is divided into a plurality of regenerative chambers by partition plates, each regenerative chamber is a same sector, and has a certain height, and the height of the regenerative body is mainly set according to the number of the regenerative bodies loaded as required. The bottom of the rotor is connected with a rotary bearing and is fastened through a bolt, a heat accumulator with the same quantity is loaded in each heat accumulator of the rotor, and the heat accumulator is made of porous ceramic bricks. When the rotor rotates, the rotor, the fixed base and the shell are in dynamic sealing, and the dynamic sealing part is divided into circumferential sealing and axial sealing. The circumferential direction sealing adopts a labyrinth packing mode, and the number of circumferential sealing gaps is four; the axial sealing positions are four, and the steel wire sealing brush group module is used for sealing, wherein the axial sealing module separates a hot smoke channel and a hot air channel of the shell, and separates a cold smoke channel and a cold air channel of the fixed base. When the axial sealing device works, the sealing brush of the axial sealing module is in contact sealing with the heat storage chamber partition plate of the rotor in the area, and is used for blocking leakage of gas blowby of smoke and air.
Because the flue system generally adopts the draught fan to draw the flue gas, the interior of the flue is negative pressure, the air system generally adopts the blower to supply air, and the interior of the air duct is positive pressure, therefore, in order to ensure the effect of the sealing module, the cold flue gas with certain pressure is introduced into the sealing module to carry out air sealing. Set up a flue gas blower, follow partly cold flue gas of unable adjustment base's cold flue gas passageway suction, after the fan pressure boost, send into every axial seal module through sealed flue gas pipeline, and make the interior cold flue gas pressure of seal module be a little higher than the air side pressure, work as the pre-heater, when the rotor operates, the clearance of the cold flue gas after the sealed pressure boost through seal module and rotor is to hot flue gas passageway, cold air passageway, hot air passageway reveals, thereby guaranteed that the air does not reveal to the flue gas side, only the cold flue gas after a small amount of pressure boost slightly reveals to the air side, here similar flue gas outside recirculation burning, be favorable to the low-nitrogen burning of heating furnace, reduce nitrogen oxide.
The driving motor is adjusted by frequency conversion, the heat exchange chance of the heat accumulator in unit time can be changed by adjusting the rotating speed of the rotor, and the heat exchange power of the preheater is adjusted.
The shell, the rotor, the fixed base, the sealing module, the sealed flue gas pipeline, the sealed flue gas blower and the like are provided with an inner heat-insulating layer or an outer heat-insulating layer as required, so that the appearance of the equipment is prevented from being over-heated, and the heat dissipation of the equipment is reduced.
The hot flue gas passageway sets up steam and sweeps the pipe, regularly sweeps the heat accumulator in the rotor to ensure that the heat accumulator is clean, guarantee the heat transfer effect.
The condensate discharging pipe is arranged at the bottom of the cold flue gas channel of the fixed base, and when the lower smoke discharging temperature is set and steam is condensed in flue gas, the condensate at the bottom can be conveniently led out of the preheater, and the condensate is processed on the next step.
The invention has the beneficial effects that: the invention solves the problems of large floor area of the common heat accumulating type air preheater or large pressure loss after the heat accumulator is piled up by adopting a radial flow mode for flue gas and air, the floor space of the preheater is relatively fixed, the pressure drop loss is basically fixed, and the heat exchange requirements of a large-flue gas volume and high-power waste heat recovery system can be met by properly heightening equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a perspective view of a radial flow regenerative air preheater;
FIG. 2 is a cross-sectional view of a radial flow reverse regenerative air preheater;
FIG. 3 is a left side view of a radial flow rotary regenerative air preheater;
FIG. 4 is a perspective view of the rotor of the radial flow reverse regenerative air preheater;
FIG. 5 is a partial cross-sectional view of a seal module of a radial flow reverse regenerative air preheater;
fig. 6 is a top view of a radial flow reverse regenerative air preheater.
In the figure: 1. the device comprises a fixed base, 2. a motor and speed reducer assembly, 3. a rotary bearing, 4. a heat accumulator, 5. a shell, 6. a rotor, 7. a flue gas blower, 8. a sealed flue gas pipeline, 9. a circumferential direction sealing assembly, 10. an axial sealing module, 11. a condensation discharge pipe, 12. a steam purging pipe, 13. a manhole door, 14. a control system, 6-1. a top ring plate, 6-2. a sealing arc plate, 6-3. a heat accumulator partition plate, 6-4. a ring plate, 6-5. a supporting rib plate, 6-6. a base mounting plate, A. a hot flue gas inlet, B. a cold flue gas outlet, C. a hot air outlet, D. a cold air inlet, a hot flue gas channel, b. a cold flue gas channel, c. a hot air channel, d. a cold air channel and e. a sealed cold flue gas channel.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1 to 6, when the radial flow-back heat accumulating type air preheater according to the embodiment of the present invention is applied to a flue gas waste heat recovery system, a hot flue gas is provided with kinetic energy by an external induced draft fan, the hot flue gas is introduced into a hot flue gas inlet a of a housing 5, the hot flue gas is distributed on the outer circumferential surface of a rotor 6 covered by the hot flue gas channel a of the housing, the hot flue gas is respectively sent into each heat accumulator of the rotor 6, passes through a heat accumulator 4 loaded in the heat accumulator and flows to an axis, the hot flue gas continuously contacts with the heat accumulator during the period to exchange heat, the cold flue gas enters a cold flue gas channel B of a fixed base 1 and then goes down to be led out through a cold; meanwhile, cold air sent by the air blower of the flue gas waste heat recovery system enters from a cold air inlet D of the fixed base 1, ascends and is distributed to the inner circumferential surface of the rotor 6 covered by the area in a cold air channel D, and is respectively sent into each heat storage chamber of the rotor 6, passes through the heat storage bodies 4 loaded in the heat storage chambers and flows to the shell 5, the cold air continuously contacts with the heat storage bodies to absorb heat in the period, hot air enters a hot air channel C and is then led out from a hot air outlet C of the shell 5; the rotor continuously switches the heat accumulator 4 which has stored heat to the air side, and switches the heat accumulator 4 which is blown cold by cold air to the smoke side, thereby continuously completing the heat exchange process between the smoke of the preheater and the air.
The fixed base 1 is composed of a supporting steel structure, a cold air channel d and a cold flue gas channel b, wherein the supporting steel structure is mainly formed by welding and processing materials such as profile steel and steel plates, and has the main function of supporting the dead weight of the fixed base; the cold air channel d and the cold flue gas channel b are made of steel plates and are of hollow tubular structures, the upper part of a circular tube is sealed by a circular steel plate, and the inside of the circular tube is divided into two parts by a rectangular steel plate, namely the cold air channel d and the cold flue gas channel b; the side wall of the circular tube is provided with a plurality of rectangular holes which are respectively 2 axial sealing module 10 mounting interfaces, 1 cold flue gas inlet and 1 cold air outlet; and the side surfaces of the bottoms of the cold air channel D and the cold flue gas channel B are respectively provided with a cold air inlet D and a cold flue gas outlet B for leading in and leading out cold air and cold flue gas, and the outlets are connected with an external pipeline through steel plate flanges. The mounting interfaces 2 of the axial sealing modules 10 are all arranged in the cold flue gas channel b and are close to the separating steel plates, and a top sealing plate of the cold flue gas channel b is provided with a manhole door, so that personnel can conveniently enter and overhaul; and the top sealing plate of the cold flue gas channel b is also provided with a sealed cold flue gas outlet which is connected with a sealed flue gas pipeline through a steel plate flange. The fixed base 1 is according to the heat preservation requirement, and the inside lining that all sets up certain thickness of position that the wallboard contacted with the atmosphere to reduce the heat dissipation.
The rotor 6 is an annular rotary cage type structure and mainly comprises a top ring plate 6-1, a sealing arc plate 6-2, a regenerator partition plate 6-3, a ring plate 6-4, a supporting rib plate 6-5, a base mounting plate 6-6 and the like.
The top ring plate 6-1 and the base mounting plate 6-6 are welded with a plurality of regenerative chamber partition plates 6-3 to form a plurality of fan-shaped regenerative chambers for loading a regenerative body; the inner straight edge and the outer straight edge of each regenerator partition 6-3 are welded with sealing arc plates 6-2, when the rotor rotates, the arc steel plates are in contact with the sealing brushes of the axial sealing modules 10 to play a role in isolating smoke and air, and the arc steel plates are beneficial to reducing resistance and prolonging the service life of the sealing modules. 2, the base mounting plates 6-6 and the support rib plates 6-5 are welded to form a whole body to be beneficial to bearing, and the lower base mounting plates 6-6 and the rotary bearing 3 are installed in a tolerance fit mode through mounting surfaces and fastened through bolts to support the weight of the rotor and the heat accumulator on the rotary bearing. The ring plate 6-4 is welded with the top ring plate 6-1 and the steel plate on the upper part of the base mounting plate 6-6, a circumferential gap is formed between the ring plate 6-4 and the shell 5, and a circumferential sealing assembly 9 is adopted for sealing.
The rotor 6 is supported on the fixed base 1 through the rotary bearing 3, and the upper circular tube of the fixed base 1 is sleeved in the rotor 6, 2 circumferential gaps are formed between the top ring plate 6-1 and the base mounting plate 6-6 of the rotor 6 and the upper part and the lower part of the fixed base 1, and the rotor is sealed by a circumferential sealing assembly 9; the inner ring sealing arc-shaped plate 6-2 of the rotor 6 and the partition plate of the fixed base 1 form 2 axial gaps, and an axial sealing module 10 is adopted for sealing.
The inner surfaces of a top ring plate 6-1 and a base mounting plate 6-6 in a heat storage chamber of the rotor 6 are provided with light castable linings and heat preservation nails thereof for heat insulation and heat preservation.
The shell 5 is composed of a supporting steel structure, a hot air channel c and a hot smoke channel a, the supporting steel structure is mainly formed by welding and processing materials such as section steel and steel plates, and the shell is mainly supported on the ground. The hot air channel c and the hot flue gas channel a are formed by welding steel plates, and the inner surfaces of the hot air channel c and the hot flue gas channel a are provided with light castable linings and heat insulation nails thereof for heat insulation and heat preservation. The rotor 6 is wrapped in the shell 5, round holes are formed in the top and bottom steel plates of the shell, circumferential gaps are formed between the round holes and the ring plates 6-4 of the rotor 6 respectively, and a circumferential sealing group 9 is used for sealing. The lateral wall of shell 5 is opened there are 2 rectangular holes, installs the interface for 2 axial seal modules 10, is separated into two parts by this axial seal module 10 with the shell, hot-air channel c and hot flue gas passageway a. The side wall of the hot flue gas channel a is also provided with a hot flue gas inlet A which is connected with an external flue through a steel plate flange. And a hot air outlet C is also formed in the side wall of the hot air channel C and is connected with an external air channel through a steel plate flange.
The steam purging pipe 12 is arranged in a hot flue gas channel a of the shell 5, vertically penetrates through the top and bottom steel plates, and mainly comprises a flange and a round pipe, spray holes are formed in the pipe wall of the round pipe facing the direction of the rotor, and steam is sprayed to the heat accumulator from the inside of the pipe so as to clean the dust accumulated on the heat accumulator.
The motor and speed reducer unit 2 comprises a variable-frequency explosion-proof motor, a speed reducer, a pinion, a motor mounting seat and the like, the motor mounting seat is welded and fixed on the fixed base 1, and the pinion is meshed with a rotary bearing outer ring gear. The motor is controlled by control system 14, and the motor rotates and passes through speed reducer and big pinion gear speed reduction back, drives the low-speed rotation of rotor, can adjust motor frequency through control system 14 to change the rotor rotational speed, and then change preheater heat transfer power, adjust exhaust gas temperature or adjust air preheating temperature.
Flue gas blower 7 and sealed flue gas pipeline 8 are installed on the 1 top shrouding of unable adjustment base, and sealed flue gas pipeline 8 is connected with the sealed cold flue gas outlet in unable adjustment base 1's top, inhales flue gas blower 7 with cold flue gas, and sealed flue gas pipeline 8 is again with the leading-in 4 sealed modules of flue gas behind the flue gas blower export pressure boost to make sealed cold flue gas passageway e internal pressure be a little higher than the air side pressure, prevent that the air from revealing to the flue gas side.
The heat accumulator 4 is a porous ceramic brick, the shape of the ceramic brick is cuboid or cube, a plurality of parallel through holes are formed inside the ceramic brick, and the ceramic brick is mainly made of ceramic and has the characteristics of high temperature resistance, corrosion resistance, good thermal shock resistance and the like. When the air-fuel composite is loaded in the rotor 6, the through holes are all in the horizontal direction and are arranged along the radial direction so as to adapt to the radial horizontal flow of the flue gas and the air.
The axial sealing module 10 is composed of flexible stainless steel wire sealing brushes, a brush body mounting seat, a steel plate flange, a heat preservation layer and the like, wherein the brush body mounting seat is of a rectangular box structure, a plurality of sealing brushes are mounted on an arc-shaped steel plate on the inner side of a box body for sealing a cold flue gas channel e, a plurality of small holes are formed in the arc-shaped steel plate, pressurized cold flue gas in the cold flue gas channel e can enter a gap between each sealing brush and each sealing brush conveniently, and when a sealing arc-shaped plate 6-2 on a rotor 6 is in contact with the sealing brush module, the sealing blocking effect is achieved. The steel plate flange outside the axial sealing module 10 is provided with a heat preservation layer for heat insulation, and the sealing module is installed on the corresponding interfaces of the shell 5 and the fixed base 1 through the steel plate flange. The heights of the 4 axial sealing modules 10 are the same as those of the rotor, wherein 2 is slightly wider than that for contact sealing with the outer circumference, and the length of an arc-shaped plate in the box body is slightly longer than that of an outer arc of the fan-shaped regenerative chamber; in addition, 2 the contact sealing between the rotor and the inner circumference of the rotor is slightly narrow, and the length of an arc-shaped plate outside the box body is slightly longer than that of the inner arc of the fan-shaped regenerative chamber. The distance between the sealing brushes is smaller than the chord length of the sealing arc-shaped plate 6-2 on the rotor 6, and the purpose is to always contact the sealing brushes with the sealing arc-shaped plate 6-2 when the rotor rotates, so that leakage is prevented, the pressure in the sealing cold flue gas channel e is always maintained, and the sealing effect is ensured.
The circumferential direction sealing assembly 9 consists of a labyrinth packing box and sealing packing, wherein the labyrinth packing box is respectively arranged at corresponding positions of the fixed base 1, the rotor 6 and the shell 5 through bolt gaskets and the like so as to prevent smoke or air from leaking from a circumferential gap. The sealing box can be designed into different forms according to needs, and the filler is made of stainless steel wire and graphite.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a radial flow goes back regenerative air preheater, includes unable adjustment base (1), its characterized in that, the top of unable adjustment base (1) is provided with slewing bearing (2) of vertical setting, be provided with mutually independent cold flue gas passageway (b) and cold air passageway (d) in slewing bearing (2), slewing bearing (2) overcoat is equipped with rotor (6), rotor (6) surface is provided with shell (5), be provided with heat accumulator (4) in rotor (6), heat accumulator (4) are formed with along radial direction and connect the hot flue gas passageway (a) of cold flue gas passageway (b) and connect the hot air passageway (c) of cold air passageway (d).
2. A radial flow regenerative air preheater according to claim 1, wherein the rotor (6) is an annular rotating cage structure, the rotor (6) being divided vertically into a plurality of regenerators each of which is an identical sector.
3. A radial flow regenerative air preheater according to claim 2, wherein the rotor (6) comprises a top ring plate (6-1), a sealing arc plate (6-2), a regenerator partition plate (6-3), a ring plate (6-4), a support rib plate (6-5), and a base mounting plate (6-6).
4. Radial flow regenerative air preheater according to claim 1, characterized in that an axial sealing module (10) is vertically arranged between the rotor (6) and the slewing bearing (2) and the housing (5).
5. Radial flow regenerative air preheater according to claim 1, characterized in that the top and bottom of the rotor (6) are provided with circumferential sealing assemblies (9).
6. Radial flow regenerative air preheater according to claim 1, characterized in that steam purge tubes (12) are provided in the hot flue gas channel (a).
7. Radial flow regenerative air preheater according to claim 1, characterized in that in the cold flue gas channel (b) there is provided a row of condensing tubes (11).
8. A radial flow regenerative air preheater according to claim 1, wherein the top closure plate of the cold flue gas duct (b) is provided with manhole doors (13).
9. A radial flow regenerative air preheater according to claim 1, wherein the stationary base (1) is provided with a motor and reducer assembly (2) for rotating the rotor (6).
10. A radial flow regenerative air preheater according to claim 1, characterized in that the heat accumulator (4) is made of porous ceramic bricks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911375816.1A CN110986076B (en) | 2019-12-27 | 2019-12-27 | Radial flow back rotary heat accumulating type air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911375816.1A CN110986076B (en) | 2019-12-27 | 2019-12-27 | Radial flow back rotary heat accumulating type air preheater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110986076A true CN110986076A (en) | 2020-04-10 |
| CN110986076B CN110986076B (en) | 2024-07-23 |
Family
ID=70077955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911375816.1A Active CN110986076B (en) | 2019-12-27 | 2019-12-27 | Radial flow back rotary heat accumulating type air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110986076B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212356A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Multichannel heat accumulation formula air heater |
| CN115540341A (en) * | 2022-03-12 | 2022-12-30 | 无锡恒业电热电器有限公司 | High-temperature high-pressure air energy storage electric heater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB645477A (en) * | 1947-03-27 | 1950-11-01 | Alec Joseph Skinner | Improved recuperators or regenerators for the interchange of heat between gases |
| CN104061584A (en) * | 2014-07-11 | 2014-09-24 | 岳阳钟鼎热工电磁科技有限公司 | Heat accumulating type slewing air preheater |
| CN110274256A (en) * | 2019-06-13 | 2019-09-24 | 岳阳恒盛石化科技有限公司 | A kind of nothing alters wind regenerative air preheater |
| CN212081305U (en) * | 2019-12-27 | 2020-12-04 | 岳阳恒盛石化科技有限公司 | Radial flow-back heat accumulation type air preheater |
-
2019
- 2019-12-27 CN CN201911375816.1A patent/CN110986076B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB645477A (en) * | 1947-03-27 | 1950-11-01 | Alec Joseph Skinner | Improved recuperators or regenerators for the interchange of heat between gases |
| CN104061584A (en) * | 2014-07-11 | 2014-09-24 | 岳阳钟鼎热工电磁科技有限公司 | Heat accumulating type slewing air preheater |
| CN110274256A (en) * | 2019-06-13 | 2019-09-24 | 岳阳恒盛石化科技有限公司 | A kind of nothing alters wind regenerative air preheater |
| CN212081305U (en) * | 2019-12-27 | 2020-12-04 | 岳阳恒盛石化科技有限公司 | Radial flow-back heat accumulation type air preheater |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212356A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Multichannel heat accumulation formula air heater |
| CN115540341A (en) * | 2022-03-12 | 2022-12-30 | 无锡恒业电热电器有限公司 | High-temperature high-pressure air energy storage electric heater |
| CN115540341B (en) * | 2022-03-12 | 2023-09-08 | 无锡恒业电热电器有限公司 | High-temperature high-pressure air energy storage electric heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110986076B (en) | 2024-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106949488A (en) | Heat storage burner with efficient sealed rotating type change valve | |
| CN110986076A (en) | Radial flow-back heat accumulation type air preheater | |
| CN201772438U (en) | Spiral finned tube type boiler waste heat recycling device | |
| CN102042609B (en) | Rotary high-temperature air preheater | |
| CN101963449A (en) | Double-layer ring-shaped rotary hearth furnace | |
| CN101761935B (en) | Rotary high-temperature air preheater | |
| CN212081305U (en) | Radial flow-back heat accumulation type air preheater | |
| CN107166412A (en) | Block-resistant type rotary wings heat accumulating burner | |
| CN205640947U (en) | Gaseous allotment valve of rotatory disk | |
| CN103436277B (en) | Energy-saving continuous gasification cracking furnace | |
| CN102080933B (en) | Rotary high-temperature air preheater | |
| CN106119536B (en) | A kind of cooling equipment of manganese oxide powder | |
| CN206739321U (en) | Heat storage burner with efficient sealed rotating type change valve | |
| CN210485768U (en) | Heat accumulating type catalytic combustion purification device | |
| CN107355565A (en) | The ring plate sealing device of Regenerative Combustion System rotating type change valve | |
| CN113636553B (en) | External heat rotary high-quality active carbon efficient energy-saving environment-friendly production device | |
| CN211625320U (en) | High-efficient stifled heat accumulation component of preventing of air heater and mounting structure thereof | |
| CN2606321Y (en) | Flash rotary kiln | |
| CN218033228U (en) | Prefabricated major diameter gyration heat accumulation formula air heater of modularization | |
| CN210832076U (en) | Air-channeling-free heat accumulating type air preheater | |
| CN110274256B (en) | Heat accumulating type air preheater without wind channeling | |
| CN207145670U (en) | The ring plate sealing device of Regenerative Combustion System rotating type change valve | |
| CN201237430Y (en) | Full-sealing continuous high-efficiency heat transmission rotary kiln | |
| CN212719783U (en) | Special heat accumulator for harmful gas incinerator | |
| CN2175900Y (en) | Vertical long-life blast heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |