CN106500126A - Built-in air preheater and the CO boilers with which - Google Patents
Built-in air preheater and the CO boilers with which Download PDFInfo
- Publication number
- CN106500126A CN106500126A CN201611117042.9A CN201611117042A CN106500126A CN 106500126 A CN106500126 A CN 106500126A CN 201611117042 A CN201611117042 A CN 201611117042A CN 106500126 A CN106500126 A CN 106500126A
- Authority
- CN
- China
- Prior art keywords
- air
- bobbin carriage
- heat exchange
- outlet slit
- flue
- 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
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- 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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
- F23G2209/141—Explosive gases
-
- 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)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Air Supply (AREA)
- Chimneys And Flues (AREA)
Abstract
This application discloses a kind of built-in air preheater, which includes：The total header of air intake, which is provided with air inlet duct；The total header of air outlet slit, which is provided with air outlet slit pipe；With several heat exchange units, they are arranged side by side each other and are connected in parallel between the total header of air intake and the total header of air outlet slit, each heat exchange unit has flat pattern and including heat-exchanging tube bundle, heat-exchanging tube bundle includes air intake bobbin carriage, air outlet slit bobbin carriage and several flat heat exchange tubes being connected between air intake bobbin carriage and air outlet slit bobbin carriage, and the long side direction of several flat heat exchange tubes along its cross section forms a line.Disclosed herein as well is being built-in with the CO boilers of this air preheater.Built-in air preheater according to embodiments of the present invention is conducive to reasonable utilization space, simplifies structure, effectively exchanges heat and reduce flue gas resistance.
Description
Technical field
Present invention relates in general to air preheater, in particular to built-in air preheater and has air
The CO boilers of preheater.
Background technology
Catalyst regeneration process can be divided into completely again by the content according to CO in petrochemical industry catalytic cracking process flue gas
Raw and two kinds of patterns of incomplete regen-eration.At present country's incomplete regen-eration pattern has relatively broad application, especially treating capacity compared with
Big catalyst cracker.The flue gas that catalyst regeneration is produced in catalyst incomplete regen-eration pattern (hereinafter referred to as " regenerates cigarette
Gas ") in the CO containing 3%-9%.Containing poisonous CO in regenerated flue gas, the burning through CO boilers is needed.CO boilers are discharged
Flue gas contain the pernicious gases such as substantial amounts of sulfide, nitrogen oxides, in order to avoid smoke pollution environment, it will usually in CO boilers
Increase system for desulfuration and denitration afterwards.
The task of flue gas processing device is primarily that the CO gases in regenerated flue gas burn completely, makes up to environment protection emission
Standard, while recovery waste heat, reduces plant energy consumption.The burning-point of CO is higher, at 640 DEG C or so, the fire box temperature of current CO boilers
Typically at 800-1100 DEG C or so.At 550-650 DEG C, the flue gas is directly entered the burning of CO boilers to the general temperature of regenerated flue gas, is
800～1100 DEG C of incineration temperature is warmed up to, and needs substantial amounts of fuel gas to be provided to CO boilers.In prior art, cigarette is regenerated
Gas enters CO boilers, controls fire box temperature for 800～1100 DEG C by fuel gas flow；Needed for air blast supply CO boiler combustions
The combustion air that wants；Under hot conditions in burner hearth and under sufficient superfluous Oxygen Condition, reaction generates CO2 to CO in flue gas,
Amount of heat is discharged simultaneously.Flue gas after burning is cooled to 200 DEG C or so through the boiler unit that steams, and sending into desulfurizer is carried out
Desulfurization process.
In prior art, combustion air is not preheated, is the incineration temperature for ensureing up to 800-1100 DEG C of burner hearth, needs to add
Enter substantial amounts of fuel, while needing to increase corresponding combustion air, therefore exhaust gas volumn increases a lot, causes the flue gas of CO boilers to hinder
Power increases, so that regenerated flue gas can not fully enter CO boiler combustions and cigarette machine back pressure is too high, affects the acting of cigarette machine and is
System waste heat recovery efficiency.
Meanwhile, high-temperature flue gas are sent directly into desulphurization system, will result in desulfurizing agent moisture and evaporate in a large number, cause desulphurization system to be followed
The ring water yield and water consumption are significantly increased, and are causing to take away in a large number while desulphurization system chimney " white cigarette " is billowing to cause visual pollution
Heat energy, water consume is high, and operating cost is big.
Content of the invention
It was found by the inventors of the present invention that the combustion air for entering CO boilers is preheated using fume afterheat, on the one hand reduce row
Cigarette temperature, on the other hand obtains the combustion air of higher temperature, can reduce CO boiler oils and consume, improves the efficiency of furnace；Additionally,
For wet desulphurization, this may also help in reduce desulphurization system water consumption and operating cost, reduce boiler smoke tolerance from
And reduce furnace pressure drop.
In view of this, it is an object of the invention to provide a kind of air preheater and the CO pots with this air preheater
Stove, the air preheater are suitable for being built in the existing flue of the such as kind equipment of CO boilers.
According to an aspect of the present invention, there is provided a kind of built-in air preheater, which includes：The total header of air intake,
Which is provided with air inlet duct；The total header of air outlet slit, which is provided with air outlet slit pipe；With several heat exchange units, they that
This is arranged side by side and is connected in parallel between the total header of air intake and the total header of air outlet slit, and each heat exchange unit has
Flat pattern and including heat-exchanging tube bundle, heat-exchanging tube bundle includes air intake bobbin carriage, air outlet slit bobbin carriage and is connected to air entering
Several flat heat exchange tubes between mouth bobbin carriage and air outlet slit bobbin carriage, long side of several flat heat exchange tubes along its cross section
Direction forms a line.
It is preferred that, the length-width ratio of the cross section of the flat heat exchange tube is more than or equal to 10.
It is preferred that, the air intake bobbin carriage and air outlet slit bobbin carriage are made up of flat tube respectively, and the flat tube
The short side direction of cross section is consistent with the short side direction of the cross section of the flat heat exchange tube.
Each heat exchange unit can include a heat-exchanging tube bundle, the air intake bobbin carriage and air outlet slit pipe of the heat-exchanging tube bundle
Case is connected with the total header of air intake and the total header of air outlet slit respectively.
Or, each heat exchange unit can include that at least two heat-exchanging tube bundles, at least two heat-exchanging tube bundle pass through that
This adjacent air intake bobbin carriage and air outlet slit bobbin carriage are connected in series, and are located at least two heat-exchanging tube bundle, two ends
The air intake bobbin carriage and air outlet slit bobbin carriage at end is connected with the total header of air intake and the total header of air outlet slit respectively.
It is preferred that, at least one pair of air intake bobbin carriage adjacent one another are and air outlet slit bobbin carriage by spigot-and-socket quick union or
Ferrule structure connects.
It is preferred that, at least one pair of air intake bobbin carriage adjacent one another are and air outlet slit bobbin carriage can be integrally formed.
It is preferred that, the total header of the air intake and the total header of air outlet slit are upper in the bearing of trend of the flat heat exchange tube
Same one end in flat heat exchange tube.
It is preferred that, the air intake bobbin carriage and air outlet slit bobbin carriage are always collected with the total header of air intake and air outlet slit respectively
Case is connected by spigot-and-socket quick union or ferrule structure.
The built-in air preheater can also include that distance plate, the distance plate are located between the heat exchange unit,
For fixing the distance between each heat exchange unit.
According to another aspect of the present invention, there is provided a kind of CO boilers, for processing in catalytic cracking process catalyst again
The raw regenerated flue gas of production, the CO boilers include：Burner hearth, the burner for being arranged on burner hearth bottom, the cigarette for being arranged on burner hearth downstream
Road and the unit that steams combined with flue, the burner receives fuel and combustion air is entered and wherein and burnt, the stove
Thorax receives regenerated flue gas and combustion air is entered and wherein and burned, and the incineration flue gas that regenerated flue gas burning is produced steam via described
Unit is discharged from flue, and wherein, the CO boilers also include that the air being built in the flue in unit downstream of steaming is pre-
Hot device, carrys out warm-up combustion-supporting air for reclaiming the waste heat of incineration flue gas, and wherein, the air preheater is such as claim 1-10
Any one of built-in air preheater, space between the flue and air preheater forms and supplies incineration flue gas stream
The dynamic flue gas flow channel for passing through, the air outlet slit pipe of the air preheater lead at least one of the burner and burner hearth.
In some cases, the flue positioned at unit downstream of steaming vertically can extend, and have along one
The flue outlet of horizontal direction opening, now, preferably described air preheater is arranged at just to the position of flue outlet, and
The flat pattern of the heat exchange unit of the air preheater is parallel to the vertical direction and the horizontal direction.
It is preferred that, the air preheater is installed so that the flat heat exchange tube of the heat-exchanging tube bundle in flue along vertically side
To extension.
It is preferred that, the guide rail extended along the horizontal direction is provided with the flue, the air preheater is provided with leads
Take turns and be movably erected on the guide rail by the guide wheel.
It is preferred that, soot blower is provided with the side wall just to the heat exchange unit of the air preheater of the flue.
It is preferred that, the bottom of the flue is provided with ash discharging hole, and the side of the ash discharging hole is provided with loosening air port.
Built-in air preheater according to embodiments of the present invention is conducive to reasonable utilization space, simplifies structure, effectively changes
Heat and reduction flue gas resistance.
Description of the drawings
By reading the detailed description made by non-limiting example that is made with reference to the following drawings, other of the invention
Feature, objects and advantages will become more apparent upon：
Fig. 1 diagrammatically illustrates CO boilers according to a first embodiment of the present invention；
Fig. 2A and 2B show built-in air preheater according to a second embodiment of the present invention；
Fig. 3 shows a kind of modification of air preheater shown in Fig. 2A and Fig. 2 B；
Fig. 4 shows built-in air preheater according to a third embodiment of the present invention；
Fig. 5 shows a kind of modification of air preheater shown in Fig. 4.
Specific embodiment
With reference to the accompanying drawings and examples the application is described in further detail.It is understood that this place is retouched
The specific embodiment that states is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that, in order to
It is easy to describe, in accompanying drawing, illustrate only the part related to invention.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combine.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the application in detail.
CO boilers 10 according to a first embodiment of the present invention are introduced below with reference first to Fig. 1.
As shown in figure 1, CO boilers 10 include burner hearth 12, the burner 11 for being arranged on 12 bottom of burner hearth, are arranged on burner hearth 12
The flue 13 in downstream and the unit 14 that steams combined with flue 13.Burner 11 has the fuel inlet 11a for receiving fuel,
Be supplied to burner 11 fuel mix in burner 11 with combustion air after light, so as to heating furnace 12.Carry out self-catalysis
The regenerated flue gas containing CO of agent regenerating unit are admitted to the burner hearth 12 of CO boilers 10 by smoke inlet 12a, and in burner hearth 12
In mix with combustion air and burn.Burn the incineration flue gas for producing and enter flue 13, flow through the unit 14 that steams, steam unit 14
Middle exchange heat and produce steam, and incineration flue gas temperature reduces.The unit 14 that steams can be superheater, evaporimeter, save coal
The combination of any one or more in device.Generally, the unit 14 that steams can make the temperature of incineration flue gas be reduced to 200 DEG C or so.
According to the present embodiment, CO boilers 10 also include that the air being built in the flue 13 in 14 downstream of unit of steaming is pre-
Hot device 100, carrys out warm-up combustion-supporting air for reclaiming the waste heat of incineration flue gas.Air preheater 100 is built-in air preheater,
This will introduce more particularly below.Space between flue 13 and air preheater 100 is formed flows for incineration flue gas
The flue gas flow channel for passing through.As illustrated, the air outlet slit of air preheater 100 leads to burner 11.It should be understood that basis
The different configuration of CO boilers, combustion air can also be sent directly into burner hearth 12 or be simultaneously fed into burner 11 and burner hearth 12, and
The present invention is not restricted by this regard.
, through air preheater 100, with the combustion air heat exchange in which, the flue gas after cooling is from flue 13 for incineration flue gas
Flue outlet 15 is discharged, it is possible to which being sent to flue gas desulfurization device 20 carries out desulfurization process.Flue gas desulfurization device 20 can be any
Suitable desulfurizer, for example, can be wet desulphurization device, and the present invention is not limited in this respect.
By built-in air preheater 100, the burning that CO boilers 10 with Mist heat recovering, can preheat CO boilers is empty
Gas, substantially reduces firing rate, improves the efficiency of furnace.Furthermore, it is possible to alleviate the cooling work in desulfurizer, especially for wet
For method desulfurizer, water consume energy consumption is greatly reduced, energy-saving and emission-reduction are realized.
And, the air preheater 100 being built in 10 flue of CO boilers contributes to the space for making full use of CO boilers 10,
Reduce the transformation of the pipeline between CO boilers 10 and flue gas desulfurization device 20.In addition, as noted previously, as directly using flue
Space between 13 and air preheater 30B is used as flue gas flow channel, so for external air preheater, simplifying
The construction (eliminating the structure division of construction flue gas flow channel, such as air preheater outer cover) of air preheater.
Additionally, according to the present embodiment, as shown in figure 1, the flue 13 positioned at 14 downstream of unit of steaming of CO boilers 10 can be with
It is configured to vertically extend, and with the flue outlet 15 along a horizontal direction opening.Air preheater 100 is just arranged on
At position to flue outlet 15.This contributes to installation of the air preheater 100 in flue 13, dismounting and maintenance.
Alternatively, as shown in figure 1, the guide rail 18 extended along the horizontal direction can be arranged in flue 13, and edge
The guide rail 18 and movably set up air preheater 100.
For improving heat transfer effect, flue gas flow guiding device 16 can be set in air preheater tube bank upper end.Flue gas water conservancy diversion is filled
Put 16 for example can include multiple arcs plate, its primarily serve the purpose of guiding flue gas even into air preheater 100 each
Heat exchange unit, enhanced heat exchange effect.
Soot blower 19 can be set on the corresponding 13 side wall of flue of the heat exchange unit of air preheater 100, for removing sky
The dust stratification of air preheater 100.Additionally, the bottom of flue can arrange ash discharging hole 17, and it is to improve ash discharge efficiency, ash discharging hole 17
Side can arrange loosening air port 17a.
The built-in sky that can be used for according to a second embodiment of the present invention is introduced below with reference to Fig. 2 to Fig. 5 in further detail
The structure of air preheater 100.Air preheater 100 can apply to real according to the present invention first as described above with Fig. 1 introductions
Apply the CO boilers of example.
Fig. 2A shows that the front view of air preheater 100, Fig. 2 B are schematically shown along air preheat shown in Fig. 2A
The sectional view that the centre position cutting of device 100 is obtained.
As shown in Figure 2 A and 2B, air preheater 100 includes：Total header 110a of air intake, the total header of air outlet slit
110b and it is arranged side by side each other and is connected in parallel between total header 110a of air intake and total header 110b of air outlet slit
Several heat exchange units 120 (see Fig. 2 B).Total header 110a of air intake is provided with air intake 111；Air outlet slit always collects
Case 110b is provided with air outlet slit 112.Each heat exchange unit 120 has flat pattern and including heat-exchanging tube bundle 130.Heat exchanger tube
Beam 130 includes air intake bobbin carriage 131a, air outlet slit bobbin carriage 131b and is connected to air intake bobbin carriage 131a and air outlet slit
Several flat heat exchange tubes 132 between bobbin carriage 131b.As more clearly shown in Fig. 2 B, in each heat exchange unit 120
Several long side directions of the flat heat exchange tube 132 along its cross section form a line.
In preferred exemplary, the length-width ratio of the cross section of flat heat exchange tube 132 is more than or equal to 10.There is such aspect
The heat exchanger tube 132 of the cross section of ratio can effectively improve heat exchange efficiency, and be conducive to further reducing the resistance to flue gas.More preferably
Ground, flat heat exchange tube 132 are the plate heat exchange tube with length-width ratio more than 10 square-section.
In Fig. 2A example showns, each heat exchange unit 120 includes a heat-exchanging tube bundle 130, the air of heat-exchanging tube bundle 130
Entrance bobbin carriage 131a and air outlet slit bobbin carriage 131b are connected with total header 110a of air intake and total header 110b of air outlet slit respectively
Connect.The connection can be the non-dismountable formula connection such as welding, or for example pass through spigot-and-socket quick union or ferrule structure
The detachable connection of realization.
Combustion air needed for CO boilers 10 is by total header 110a of 111 air inlet entrance of air intake, air intake
Total header 110a distributes air to the air intake bobbin carriage 131a of each heat exchange unit 120 being connected thereto, so as to air
Enter each heat exchanger tube 132 and flue gas heat exchange.Air after heat exchange enters the air outlet slit bobbin carriage 131b of heat exchange unit 120, enters
One stepping enters total header 110b of air outlet slit, the burner 11 and/or burner hearth 12 for being delivered to CO boilers 10 by air outlet slit 112,
Then CO boiler combustions are entered after mixing with fuel.
As shown in Figure 2 B, air intake bobbin carriage 131a and air outlet slit bobbin carriage 131b are made up of flat tube respectively, and should
The short side direction of the cross section of flat tube is set to consistent with the short side direction of the cross section of flat heat exchange tube 132.
Referring back to Fig. 1, the preferably flat pattern (paper parallel to Fig. 2A of the heat exchange unit 120 of air preheater 100
In-plane) parallel to 15 directions of vertical direction and flue outlet horizontal direction.As incineration flue gas are through the unit that steams
Vertically flowed from the top down after 14 first, then when flue end is reached yawing moment along 15 courts of flue outlet
To horizontal direction flowing, so make the heat exchange unit 120 of air preheater 100 that there is flat pattern, and cause that this is flat
Shape parallel is in the flue gas resistance for vertically and horizontally, being all conducive to reduction setting air preheater 100 to be increased
Power, so that be conducive to the firing efficiency for keeping CO boilers.
Referring again to Fig. 2 B, air preheater 100 can also include distance plate 150, and it is single that the distance plate 150 is located in heat exchange
Between unit 120, for fixing the distance between each heat exchange unit 120.So be conducive to the structure for strengthening air preheater 100 steady
Qualitative, improve service life.
Additionally, in air preheater 100 shown in Fig. 2A and Fig. 2 B, total header 110a of air intake and air outlet slit always collect
Case 110b can be respectively arranged with condensate drain mouth 113 and 114, for carrying air as the water produced by condensation is discharged.
Fig. 3 shows a kind of modification of air preheater shown in Fig. 2A and Fig. 2 B.Air preheater and Fig. 2A shown in Fig. 3
Substantially the same with air preheater shown in Fig. 2 B, difference is essentially consisted in for installing 160 water of guide wheel of air preheater
Plain cloth is put so that, when being installed in CO boilers 10, the flat heat exchange tube 132 of heat-exchanging tube bundle 130 is along vertical side for air preheater
To extension.
Although Fig. 3 only illustrates air preheater 100, it should be appreciated that, it is intended to covering, to be provided with the air pre-
The CO boilers of hot device 100.Specifically, it is intended to covering such a CO boiler, the CO boilers have and CO shown in Fig. 1
10 essentially identical configuration of boiler, difference are that air preheater 100 is installed so that heat-exchanging tube bundle 130 in flue
Flat heat exchange tube 132 vertically extend.
As air intake bobbin carriage 131a and air outlet slit bobbin carriage 131b is used for connecting multiple heat exchanger tubes 132, and collect
Air in heat exchanger tube 132, so air intake bobbin carriage 131a and air outlet slit bobbin carriage 131b has more compared to heat exchanger tube 132
Big cross section short side dimension.In other words, the former has bigger thickness than the latter.This has resulted in flue gas perpendicular to sky
The resistance that gas entrance bobbin carriage 131a and air outlet slit bobbin carriage 131b is subject to when flowing is greater than when flowing perpendicular to heat exchanger tube 132
The resistance being subject to.On the other hand, a common feature of the flue of CO boilers is, the sectional area ratio of 13 vertical extension of flue
The sectional area of flue outlet 15 is much larger, so the stop that air preheater is brought in the horizontal direction is than the resistance in vertical direction
Keep off and bigger resistance is produced to flue gas.Consider the construction of the construction and flue 13 of air preheater 100, by air preheater
100 are installed so that heat exchanger tube 132 is extends in the vertical direction, and are conducive to reducing resistance in the horizontal direction to flue gas, so as to have
Beneficial to raising cigarette engine efficiency.
Although illustrating in Fig. 2A and Fig. 2 B, each heat exchange unit 120 of air preheater 100 includes a heat-exchanging tube bundle
130, but the present invention is not limited to this.Fig. 4 shows built-in air preheater according to a third embodiment of the present invention, the sky
In gas heat exchanger, each heat exchange unit 120 can include two heat-exchanging tube bundles 130.
Specifically, as shown in figure 4, a heat exchange unit 120 can include two heat-exchanging tube bundles 130, the two heat exchange
Tube bank 130 is connected in series by air intake bobbin carriage 131a adjacent one another are and air outlet slit bobbin carriage 131b, and is located at two
The air intake bobbin carriage 131a of two ends of heat-exchanging tube bundle 130 and air outlet slit bobbin carriage 131b respectively with the total header of air intake
110a and the total header 110b connection of air outlet slit.Adjacent air intake bobbin carriage 131a and air outlet slit bobbin carriage 131b can pass through
The modes such as welding unremovably connect, it is also possible to for example realize detachable company by spigot-and-socket quick union or ferrule structure
Connect.Air intake bobbin carriage 131a and air outlet slit bobbin carriage 131b respectively with total header 110a of air intake and the total header of air outlet slit
The connection of 110b can also be non-dismountable connection or be detachably connected.
Fig. 5 shows a kind of modification of air preheater shown in Fig. 4, wherein, a pair air intake bobbin carriages adjacent one another are
It is integrally formed with air outlet slit bobbin carriage, i.e., is made up of same bobbin carriage 131c.
Although it should be appreciated by those skilled in the art that including two above by reference to Fig. 4 and Fig. 5 with a heat exchange unit 120
Illustrate as a example by heat-exchanging tube bundle 130, but the present invention is not limited to the particular number of heat-exchanging tube bundle, but can for example scheming
Heat-exchanging tube bundle 130 shown in 4 and Fig. 5 be unit according to using needs be extended exchanging hot cell, be allowed to include two
Above heat-exchanging tube bundle.
Additionally, the material selection of the heat exchange element of air preheater 100 is corrosion-resistant, the metal that high temperature resistant, heat conduction are excellent or
Nonmetallic.The materials such as the alloy (such as stainless steel) or pottery, glass of anti-dewpoint corrosion is preferentially selected.
Above description is only the preferred embodiment and the explanation to institute's application technology principle of the application.People in the art
Member should be appreciated that involved invention scope in the application, however it is not limited to the technology of the particular combination of above-mentioned technical characteristic
Scheme, while should also cover in the case of without departing from the inventive concept, is carried out by above-mentioned technical characteristic or its equivalent feature
Other technical schemes for being combined and being formed.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (16)
1. a kind of built-in air preheater, including：
The total header of air intake, which is provided with air inlet duct；
The total header of air outlet slit, which is provided with air outlet slit pipe；With
Several heat exchange units, they are arranged side by side each other and are connected in parallel on the total header of air intake and air outlet slit is total
Between header, each heat exchange unit has flat pattern and including heat-exchanging tube bundle, and heat-exchanging tube bundle includes air intake bobbin carriage, sky
Gas outlet bobbin carriage and several flat heat exchange tubes for being connected between air intake bobbin carriage and air outlet slit bobbin carriage, this several flat
Long side direction of the flat heat exchanger tube along its cross section forms a line.
2. built-in air preheater as claimed in claim 1, wherein, the length-width ratio of the cross section of the flat heat exchange tube is big
In or be equal to 10.
3. built-in air preheater as claimed in claim 1, wherein, the air intake bobbin carriage and air outlet slit bobbin carriage point
It is not made up of flat tube, and the minor face of the short side direction of the cross section of the flat tube and the cross section of the flat heat exchange tube
Direction is consistent.
4. built-in air preheater as claimed in claim 1, wherein, each heat exchange unit includes a heat-exchanging tube bundle, should
The air intake bobbin carriage and air outlet slit bobbin carriage of heat-exchanging tube bundle is connected with the total header of air intake and the total header of air outlet slit respectively.
5. built-in air preheater as claimed in claim 1, wherein, each heat exchange unit includes at least two heat exchanger tubes
Beam, at least two heat-exchanging tube bundle are connected in series by air intake bobbin carriage adjacent one another are and air outlet slit bobbin carriage, and
The air intake bobbin carriage and air outlet slit bobbin carriage for being located at least two heat-exchanging tube bundles, two ends is total with air intake respectively
Header and the total header connection of air outlet slit.
6. built-in air preheater as claimed in claim 5, wherein, at least one pair of air intake bobbin carriage adjacent one another are and
Air outlet slit bobbin carriage is connected by spigot-and-socket quick union or ferrule structure.
7. built-in air preheater as claimed in claim 5, wherein, at least one pair of air intake bobbin carriage adjacent one another are and
Air outlet slit bobbin carriage is integrally formed.
8. the built-in air preheater as any one of claim 5-7, wherein, the total header of the air intake and sky
Gas exports same one end that total header is located at flat heat exchange tube on the bearing of trend of the flat heat exchange tube.
9. the built-in air preheater as described in claim 4 or 5, wherein, the air intake bobbin carriage and air outlet slit pipe
Case is connected by spigot-and-socket quick union or ferrule structure with the total header of air intake and the total header of air outlet slit respectively.
10. built-in air preheater as claimed in claim 1, also includes distance plate, and the distance plate is located in the heat exchange
Between unit, for fixing the distance between each heat exchange unit.
A kind of 11. CO boilers, for processing the regenerated flue gas that catalyst regeneration is produced in catalytic cracking process, the CO boiler bags
Include：Burner hearth, the burner for being arranged on burner hearth bottom, the flue for being arranged on burner hearth downstream and the unit that steams combined with flue,
The burner receives fuel and combustion air is entered and wherein and burnt, and the burner hearth receives regenerated flue gas and combustion air is entered
Wherein and burn, the incineration flue gas that regenerated flue gas burning is produced are discharged from flue via the unit that steams, it is characterised in that
The CO boilers also include the air preheater being built in the flue in unit downstream of steaming, and burn cigarette for reclaiming
The waste heat of gas carrys out warm-up combustion-supporting air, and wherein, the air preheater is built-in as any one of claim 1-10
Regenerative air heater, the space between the flue and air preheater form the flue gas flow channel flowed through for incineration flue gas,
The air outlet slit pipe of the air preheater leads at least one of the burner and burner hearth.
12. CO boilers as claimed in claim 11, wherein, the flue positioned at unit downstream of steaming vertically prolongs
Stretch, and with the flue outlet along a horizontal direction opening, the air preheater be arranged at just to the position of flue outlet,
And the flat pattern of the heat exchange unit of the air preheater is parallel to the vertical direction and the horizontal direction.
13. CO boilers as claimed in claim 12, wherein, the air preheater is installed so that the heat exchange in flue
The flat heat exchange tube of tube bank vertically extends.
14. CO boilers as claimed in claim 12, wherein, are provided with the flue along leading that the horizontal direction extends
Rail, the air preheater are provided with guide wheel and are movably erected on the guide rail by the guide wheel.
The 15. CO boilers as any one of claim 11-14, wherein, the flue just to the air preheater
Heat exchange unit side wall on be provided with soot blower.
16. CO boilers as claimed in claim 11, wherein, the bottom of the flue is provided with ash discharging hole, and the ash discharge
The side of mouth is provided with loosening air port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611117042.9A CN106500126B (en) | 2016-12-07 | 2016-12-07 | Built-in air preheater and CO boiler with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611117042.9A CN106500126B (en) | 2016-12-07 | 2016-12-07 | Built-in air preheater and CO boiler with it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106500126A true CN106500126A (en) | 2017-03-15 |
| CN106500126B CN106500126B (en) | 2019-04-16 |
Family
ID=58329552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611117042.9A Active CN106500126B (en) | 2016-12-07 | 2016-12-07 | Built-in air preheater and CO boiler with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106500126B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61161333A (en) * | 1985-01-11 | 1986-07-22 | Niigata Eng Co Ltd | Air preheater |
| JP2002267394A (en) * | 2001-03-05 | 2002-09-18 | Babcock Hitachi Kk | Air-preheating apparatus |
| JP2004044870A (en) * | 2002-07-10 | 2004-02-12 | Sumitomo Precision Prod Co Ltd | Hybrid heat exchanger |
| CN202915395U (en) * | 2012-11-28 | 2013-05-01 | 福建立信换热设备制造股份公司 | Built-in flue plate type preheater |
| CN203147726U (en) * | 2013-03-13 | 2013-08-21 | 抚顺石油机械有限责任公司 | Pi-structural catalytic unit CO incineration waste heat boiler |
| CN203963992U (en) * | 2014-07-25 | 2014-11-26 | 山东旺泰机械科技有限公司 | Enamel plate type air preheater |
| CN204901801U (en) * | 2015-07-07 | 2015-12-23 | 大唐环境产业集团股份有限公司 | A integration heat transfer device for wet flue gas desulfurization system |
| CN205191630U (en) * | 2015-12-01 | 2016-04-27 | 哈尔滨兴隆锅炉有限公司 | Box air heater of board |
| CN206234838U (en) * | 2016-12-07 | 2017-06-09 | 洛阳明远石化技术有限公司 | Built-in air preheater and the CO boilers with it |
-
2016
- 2016-12-07 CN CN201611117042.9A patent/CN106500126B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61161333A (en) * | 1985-01-11 | 1986-07-22 | Niigata Eng Co Ltd | Air preheater |
| JP2002267394A (en) * | 2001-03-05 | 2002-09-18 | Babcock Hitachi Kk | Air-preheating apparatus |
| JP2004044870A (en) * | 2002-07-10 | 2004-02-12 | Sumitomo Precision Prod Co Ltd | Hybrid heat exchanger |
| CN202915395U (en) * | 2012-11-28 | 2013-05-01 | 福建立信换热设备制造股份公司 | Built-in flue plate type preheater |
| CN203147726U (en) * | 2013-03-13 | 2013-08-21 | 抚顺石油机械有限责任公司 | Pi-structural catalytic unit CO incineration waste heat boiler |
| CN203963992U (en) * | 2014-07-25 | 2014-11-26 | 山东旺泰机械科技有限公司 | Enamel plate type air preheater |
| CN204901801U (en) * | 2015-07-07 | 2015-12-23 | 大唐环境产业集团股份有限公司 | A integration heat transfer device for wet flue gas desulfurization system |
| CN205191630U (en) * | 2015-12-01 | 2016-04-27 | 哈尔滨兴隆锅炉有限公司 | Box air heater of board |
| CN206234838U (en) * | 2016-12-07 | 2017-06-09 | 洛阳明远石化技术有限公司 | Built-in air preheater and the CO boilers with it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106500126B (en) | 2019-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209726226U (en) | A kind of high-sulfur exhaust treatment system | |
| CN211119357U (en) | Household garbage incineration equipment | |
| CN206234838U (en) | Built-in air preheater and the CO boilers with it | |
| CN110260352A (en) | The electric power station system and method that a kind of low NOx combustion is coupled with white cigarette abatement | |
| CN110056890A (en) | A kind of high-sulfur exhaust treatment system and technique | |
| CN1664445A (en) | Liquid waste incineration waste heat boiler | |
| CN106765211A (en) | Catalytic cracking flue gas processing unit | |
| WO2022088686A1 (en) | Gas boiler tail flue gas energy-saving and emission-reduction system | |
| CN210891613U (en) | Layer combustion boiler system | |
| CN206540144U (en) | Catalytic cracking flue gas processing unit | |
| CN86101184A (en) | Apparatus for treating flue gas | |
| CN208735652U (en) | The eliminating white smoke system that a kind of heat exchanger and air preheater combine | |
| CN106500126B (en) | Built-in air preheater and CO boiler with it | |
| CN216047703U (en) | Secondary air system of circulating fluidized bed domestic garbage incinerator | |
| CN206001919U (en) | Ultra-low NOx emission environmental protection and energy saving tubular heater | |
| CN211853961U (en) | Bagasse boiler | |
| CN103542420A (en) | Heat transfer device and method for coal fired boiler flue gas containing sulfur trioxide | |
| CN112097287B (en) | Boiler energy-saving and flue gas whitening system, process and application | |
| CN211952779U (en) | Energy-saving and environment-friendly treatment system for mixed combustion and incineration of industrial three wastes | |
| CN208058883U (en) | A kind of hybrid neat stress heating system | |
| CN110645570A (en) | Boiler structure and denitration method in boiler | |
| CN111121059A (en) | Energy-saving and environment-friendly treatment system for mixed combustion and incineration of industrial three wastes | |
| CN201476043U (en) | Steam air preheater | |
| CN110715444B (en) | Graded water return grate firing boiler system | |
| CN216480898U (en) | Novel yellow phosphorus tail gas burning power generation boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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 |