CN206540144U - Catalytic cracking flue gas processing unit - Google Patents
Catalytic cracking flue gas processing unit Download PDFInfo
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- CN206540144U CN206540144U CN201621336558.8U CN201621336558U CN206540144U CN 206540144 U CN206540144 U CN 206540144U CN 201621336558 U CN201621336558 U CN 201621336558U CN 206540144 U CN206540144 U CN 206540144U
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- flue gas
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- 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
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Abstract
This application discloses a kind of catalytic cracking flue gas processing unit, it includes：CO boilers, flue gas desulfurization device and the air preheater steamed between unit and flue gas desulfurization device for being arranged on CO boilers, the waste heat that the air preheater is used to reclaim the incineration flue gas that CO boilers burn generation carry out warm-up combustion-supporting air.According to the flue gas processing device of the utility model embodiment by reclaiming the fume afterheat after the burning of CO boilers, the combustion air of CO boilers is preheated, firing rate is substantially reduced, the efficiency of furnace is improved.Furthermore it is possible to alleviate the cooling work in desulfurizer, for wet desulphurization device, the water consume energy consumption of desulfurizer can be greatly reduced, energy-saving and emission-reduction are realized.
Description
Technical field
The utility model is related generally at a kind of petrochemical equipment, more particularly to the flue gas of petrochemical refining's catalyst cracker
Manage device.
Background technology
Catalyst regeneration process can be divided into completely again according to the content of CO in petrochemical industry catalytic cracking process flue gas
Raw and two kinds of patterns of incomplete regen-eration.At present the country incomplete regen-eration pattern have 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%.CO in regenerated flue gas, is a kind of toxic gas, does not allow excessive emissions.Therefore, regenerate
Flue gas will pass through the processing for the flue gas processing device for including CO boilers.The flue gas of CO boilers discharge simultaneously contains substantial amounts of vulcanization
The pernicious gases such as thing, nitrogen oxides, in order to avoid smoke pollution environment, reach relative national standards, it will usually after CO boilers
Increase system for desulfuration and denitration to handle flue gas.
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.CO burning-point is higher, at 640 DEG C or so, so country's oil-refining chemical at present
In the flue gas processing device of catalyst cracker, the fire box temperature of CO boilers is general at 800-1100 DEG C or so.Catalyst regenerates
The general temperature of flue gas that device comes out is at 550-650 DEG C, and the flue gas is directly entered the burning of CO boilers, in order to be warming up to 800~
1100 DEG C of incineration temperature, it is desirable to provide substantial amounts of fuel gas.In the prior art, come out from catalytic cracking regenerator containing 3%-
9%CO flue gas enters CO boilers, controls fire box temperature to be 800~1100 DEG C by fuel gas flow；CO pots are supplied with air blower
Combustion air required for stove burning；CO in flue gas is in burner hearth under hot conditions, and under sufficient superfluous Oxygen Condition
Reaction generation CO2, while discharging amount of heat.Flue gas after burning is cooled to 200 DEG C or so, feeding through the boiler unit that steams
Desulfurizer carries out desulfurization process.
In the prior art, it is easy containing catalyst solid particle in locus, dewpoint corrosion and flue gas due to considering
The reasons such as heat exchanger are blocked, flue gas processing device is not provided with air preheater, and combustion air enters CO boilers with normal temperature.
Utility model content
Inventor of the present utility model has found there is problems with existing flue gas processing device：
1) CO boiler exports flue-gas temperature is general at 200 DEG C or so, and temperature is higher, and high-temperature flue gas is directly entered desulfurizer
Cause the waste of gas energy；Desulfurizer technological requirement flue-gas temperature is between 60-80 DEG C simultaneously, so needing to flue gas
Cooled；Flue gas is cooled, it is necessary to spray a large amount of water for wet desulphurization device, cause desulfurizer water consume,
Energy consumption is higher；
2) combustion air is not preheated, and air is burned with normal temperature into CO boilers, to ensure that burner hearth is up to 800-1100 DEG C
Incineration temperature, it is necessary to add substantial amounts of fuel；Need to increase corresponding combustion air simultaneously, therefore exhaust gas volumn increase is a lot,
Causing the flue gas resistance of CO boilers increases, so that regenerated flue gas can not fully enter CO boiler combustions and cigarette machine back pressure mistake
Height, the acting of influence cigarette machine and system waste heat organic efficiency.
In view of this, the purpose of this utility model be to provide it is a kind of at least can partly solve the above problems urged for processing
Change the flue gas processing device of the regenerated flue gas that catalyst regeneration is produced in process.
According to the utility model embodiment there is provided a kind of flue gas processing device, urged for handling in catalytic cracking process
The regenerated flue gas that agent regeneration is produced.The flue gas processing device includes：CO boilers, it includes burner hearth, is arranged on burner hearth bottom
Burner, the flue for being arranged on burner hearth downstream and the unit that steams combined with flue, the burner receive fuel and combustion-supporting
Air enters wherein and burnt, and the burner hearth receives regenerated flue gas and combustion air enters wherein and burned, regenerated flue gas burning
The incineration flue gas of generation is discharged via the unit that steams from flue；With flue gas desulfurization device, it, which is received, comes from described CO pots
The incineration flue gas of stove simultaneously carries out desulfurization process to it, wherein, the flue gas processing device also includes being arranged on the CO boilers
The air preheater steamed between unit and the flue gas desulfurization device, preheated-combustion-supporting sky is carried out for reclaiming the waste heat of incineration flue gas
Gas, and the flue gas processing device is configured to the combustion air that the air preheater is preheated being sent to burner and burner hearth.
In one embodiment, the air preheater is set to the entrance close to the flue gas desulfurization device, and institute
Stating air preheater has flue gas flow channel and air flow channel, and the flue gas flow channel has and the outlet of the flue of CO boilers
Smoke inlet and the exhanst gas outlet connected with the entrance of flue gas desulfurization device, the air flow channel have the sky for receiving combustion air
Gas entrance and the air outlet slit connected with least one of burner and burner hearth.
The flue gas desulfurization device can include desulfurizing tower.Now, the flue gas flow channel of preferably described air preheater prolongs
The axis direction for stretching direction and desulfurizing tower is at an acute angle.It is further preferred that the acute angle is in the range of 30-60 °.
In another embodiment, the air preheater is built-in air preheater, and including：Air intake always collects
Case, it is provided with air intake；The total header of air outlet slit, it is provided with air outlet slit；With several heat exchange units, they are each other
It 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, each heat exchange unit has flat
Flat shape shape 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 intake
Several flat heat exchange tubes between bobbin carriage and air outlet slit bobbin carriage, long side side of several flat heat exchange tubes along its cross section
To forming 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.
It is preferred that, the air preheater also includes distance plate, and the distance plate is located between several described heat exchange units,
For fixing the distance between each heat exchange unit.
The air preheater can be built in the flue of the porch of the flue gas desulfurization device.Now, the sky
The air outlet slit of air preheater is connected with least one of burner and burner hearth；The flue and air of the flue gas desulfurization device
Space between preheater forms the flue gas flow channel flowed through for incineration flue gas.
As an alternative or supplement, the air preheater can be built in being located at for the CO boilers and steam unit downstream
In flue.Now, the air outlet slit of the air preheater is connected with least one of burner and burner hearth；The CO boilers
Flue and air preheater between space form the flue gas flow channel flowed through for incineration flue gas.
The flue in unit downstream of steaming that is located at can vertically extend, it is possible to being opened along a horizontal direction
The flue outlet of mouth.Now, preferably described air preheater is arranged at just to the position of flue outlet, and the air is pre-
The flat pattern of the heat exchange unit of hot device is parallel to the vertical direction and the horizontal direction.
It is preferred that, the guide rail extended along the horizontal direction is provided with the flue, the air preheater, which is provided with, leads
Take turns and be movably erected on the guide rail by the guide wheel.
Reclaimed according to the flue gas processing device of the utility model embodiment by using air preheater after the burning of CO boilers
Fume afterheat, preheat the combustion air of CO boilers, substantially reduce firing rate, improve the efficiency of furnace.Furthermore it is possible to alleviate desulfurization
Cooling work in device, for wet desulphurization device, can greatly reduce the water consume energy consumption of desulfurizer, real
Existing energy-saving and emission-reduction.
Brief description of the drawings
It is of the present utility model by reading the detailed description made to non-limiting example made with reference to the following drawings
Other features, objects and advantages will become more apparent upon：
Fig. 1 is the schematic diagram of the flue gas processing device according to the utility model embodiment one；
Fig. 2 shows a preferred exemplary of the flue gas processing device according to the utility model embodiment one；
Fig. 3 is the schematic diagram of the flue gas processing device according to the utility model embodiment two；
Fig. 4 is the schematic diagram of an example of flue gas processing device shown in Fig. 3；
Fig. 5 A, Fig. 5 B show an example of the air preheater available for flue gas processing device shown in Fig. 4；
Fig. 6 shows a kind of modification of air preheater shown in Fig. 5 A and Fig. 5 B.
Embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated 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 illustrate only the part related to invention in description, accompanying drawing.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 schematically shows the flue gas processing device according to the utility model embodiment one, and it is used to handle catalysis
The regenerated flue gas that catalyst regeneration is produced in process.As illustrated, the flue gas processing device includes：CO boilers 10, setting
Flue gas desulfurization device 20 and the air preheater that is arranged between CO boilers 10 and flue gas desulfurization device 20 in CO boilers downstream
30。
CO boilers 10 include burner hearth 12, the burner 11 for being arranged on the bottom of burner hearth 12, the flue for being arranged on the downstream of burner hearth 12
13 and the unit 14 that steams that is combined with flue 13.Burner 11 has the fuel inlet 11a for receiving fuel, is supplied to burning
The fuel of device 11 is lighted after being mixed with combustion air in burner 11, so that heating furnace 12.From catalyst regeneration device
The regenerated flue gas containing CO be admitted to the burner hearths 12 of CO boilers 10 by smoke inlet 12a, and in burner hearth 12 with combustion-supporting sky
Gas is mixed and burned.Burn the incineration flue gas produced and enter flue 13, flow through the unit 14 that steams, exchanged heat in the unit 14 that steams
And steam is produced, and incineration flue gas temperature is reduced.The unit 14 that steams can be any in superheater, evaporator, economizer
Plant or a variety of combinations.Generally, the unit 14 that steams makes the temperature of incineration flue gas be reduced to 200 DEG C or so.
Containing concentration higher SO2, SO3, NOx and catalyst solid particle in the incineration flue gas of CO boilers discharge, with
The raising of environmental requirement, CO boiler exports flue gas must carry out discharging after purified treatment.Flue gas desulfurization device 20 is used for above-mentioned de-
The purposes such as sulphur.In the flue gas processing device according to the utility model embodiment, flue gas desulfurization device 20 can be adapted to be any
Desulfurizer, for example can be wet desulphurization device.By shower water by incineration flue gas in wet desulphurization device 20
Temperature is reduced between 60-80 DEG C needed for sulfur removal technology.
According to the present embodiment, as shown in figure 1, being provided with air preheat between CO boilers 10 and flue gas desulfurization device 20
Device 30.Air preheater 30 has flue gas flow channel and air flow channel, and flue gas flow channel has the outlet with the flue of CO boilers
Smoke inlet and the exhanst gas outlet that is connected with the entrance of flue gas desulfurization device 20, air flow channel has the sky for receiving combustion air
Gas entrance 31 and the air outlet slit 32 connected with least one of burner and burner hearth.Incineration flue gas air inlet preheater
30, with the air heat-exchange in it, the flue gas after cooling enters flue gas desulfurization device 20.The combustion air that CO boiler combustions need is certainly
The air intake 31 of air preheater 30 enters, and the air after heat exchange enters burner 11 as shown in the figure.It should be understood that
Although being shown in figure, combustion air is admitted to burner 11 after warming, combustion-supporting according to the different configuration of CO boilers
Air can also be sent directly into burner hearth 12, and the utility model is not restricted by this regard.
According to the present embodiment, air preheater 30 can be tubular air preheater, plate air preheater or band-tube type
Air preheater.
The metal or nonmetallic that the material selection of the heat exchange element of air preheater 30 is corrosion-resistant, high temperature resistant, heat conduction are excellent.
Preferentially from material the alloy (such as stainless steel) or ceramics, glass of anti-dewpoint corrosion.
According to the flue gas processing device of the present embodiment, by steaming unit exhanst gas outlet to flue gas desulfurization device in CO boilers
Between increase air preheater, recycled the heat in flue gas, realized energy-saving and emission-reduction.Meanwhile, it is empty by preheated burning
Gas, reduces the fuel consumption of CO boilers, has saved the energy.
Moreover, entering flue gas desulfurization device after the cooling of off-gas recovery waste heat, it can be relieved in flue gas desulfurization device
Flue gas cool-down works.For wet desulphurization device, quantity of circulating water and water consumption can be substantially reduced, so as to reduce on the whole
Desulphurization system operating cost, and reduce haze pollution.
Fig. 2 shows a preferred exemplary of the flue gas processing device according to the utility model embodiment one.Such as Fig. 2 institutes
Show, the air preheater 30A in the flue gas processing device is set to the entrance close to flue gas desulfurization device 20.
The smoke inlet position that air preheater 30A is arranged on flue gas desulfurization device 20 can reduce the throwing of anti-corrosion pipeline
Money.Specifically, the incineration flue gas that air preheater 30A is discharged to CO boilers 10 further cools, and the flue gas after cooling can
Flue gas acid dew point temperature can be reached, therefore needs between air preheater 30A and flue gas desulfurization device 20 to use anti-corrosion pipeline,
And the pipeline before air preheater smoke inlet, because flue-gas temperature is higher than dew point, so routinely pipeline is set.Anti-corrosion pipeline
Cost is high for conventional pipeline.Air preheater 30A is arranged at the smoke inlet of flue gas desulfurization device 20, is effectively subtracted
Small resistance to flue gas acid dew point corrodes the length of pipeline section, reduces cost.
In this example, flue gas desulfurization device 20 includes desulfurizing tower, and air preheater 30A flue gas flow channel prolongs
The axis direction for stretching direction and desulfurizing tower is at an acute angle, preferably at 30-60 °.Set by such, on the one hand can be conducive to cigarette
Ash fall in gas, prevents air preheater dust stratification；On the other hand, it is arranged so that cigarette compared to by air preheater 30A
The bearing of trend of flow channel is vertical direction, the windage that incineration flue gas enters desulfurizing tower is advantageously reduced, so as to reduce blower fan
Energy consumption.
It should be understood that flue gas processing device shown in Fig. 2 can realize the cigarette according to embodiment one introduced above by reference to Fig. 1
The technique effect that Flash Gas Compression Skid System can be realized.
Fig. 3 is the schematic diagram of the flue gas processing device according to the utility model embodiment two.According to the flue gas of embodiment two
Processing unit with it is essentially identical in the flue gas processing device structure according to embodiment one, difference is：According to embodiment two
Flue gas processing device in air preheater 30B be built-in air preheater, and be built in being located at for CO boilers 10
Steam in the flue 13 in the downstream of unit 14.
Air preheater 30B air intake 31 receives combustion air；In air outlet slit 32 and burner 11 and burner hearth 12
At least one connection, the air being preheated by air preheater 30B, which enters in burner 11 and/or burner hearth 12, to be participated in firing
Burn.Space between the flue 13 and air preheater 30B of CO boilers 10 forms the flue gas stream flowed through for incineration flue gas
Road.
, equally also can profit according to the flue gas processing device of embodiment two similar to the flue gas processing device according to embodiment one
Fume afterheat after being burned with CO boilers, to preheat the combustion air of CO boilers, substantially reduces firing rate, improves the efficiency of furnace；
Meanwhile, the cooling work in desulfurizer is alleviated, for wet desulphurization device, water consume energy is greatly reduced
Consumption, realizes energy-saving and emission-reduction.
In addition, the air preheater 30B being built in the flue of CO boilers 10 helps to make full use of the space 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 utilizing flue
Space between 13 and air preheater 30B is as flue gas flow channel, so for external air preheater, simplifying
The construction of air preheater (eliminates the structure division of construction flue gas flow channel, such as air preheater outer cover).
Although not shown, those skilled in the art are according to the above description it should be understood that air preheater 30B can also
The porch of flue gas desulfurization device 20 is built in, is built in substituting at the flue outlet of CO boilers 10.Such fume treatment
Device, it is possible to achieve the technique effect similar with embodiment one, and can obtain built-in air preheater contribute to simplification
The technical advantage of air preheater structure.In addition, compared to being built in CO boiler flues, air preheater 30B is built in
It is beneficial to reduce due to the corrosion impact to pipeline that flue gas further cools and brings in desulfurizer entrance.
Fig. 4 shows a preferred exemplary of flue gas processing device shown in Fig. 3, wherein using the sky being built in flue 13
Air preheater 100.As illustrated, the flue 13 for being located at the downstream of unit 14 of steaming of CO boilers 10 vertically extends, and have
There is the flue outlet 15 along a horizontal direction opening.Air preheater 100 is arranged at just to the position of flue outlet 15.This has
Help installation, dismounting and maintenance of the air preheater 100 in flue 13.
Alternatively, as shown in figure 4, the guide rail 18 extended along the horizontal direction can be set in flue 13, and edge
The guide rail 18 and movably set up air preheater 100.
The regenerated flue gas that catalyst regeneration is produced is burned into CO boilers, and the flue gas after burning steams list by boiler
Member heat exchange produces steam, and then restrain outer wall by air preheater exchanges heat with the cold air in tube bank.To improve heat transfer effect,
In air preheater tube bank upper end, flue gas flow guiding device 16 can be set.Flue gas flow guiding device 16 can for example include multiple arcs
Plate, its main function is guiding flue gas even into each heat exchange unit of air preheater 100, enhanced heat exchange effect.
Soot blower 19 can be set on the corresponding side wall of flue 13 of heat exchange unit of air preheater 100, for removing sky
The dust stratification of air preheater 100.In addition, the bottom of flue can set ash discharging hole 17, and to improve ash discharge efficiency, ash discharging hole 17
Side can set loosening air port 17a.
The air preheater available for flue gas processing device shown in Fig. 4 is introduced below with reference to Fig. 5 A, Fig. 5 B and Fig. 6
100 structure.
Fig. 5 A show the front view of air preheater 100, and Fig. 5 B are schematically shown along air preheat shown in Fig. 5 A
The sectional view that the centre position cutting of device 100 is obtained.
As shown in Figure 5 A and 5B, air preheater 100 includes：The 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 on several between the total header of air intake and the total header of air outlet slit
Heat exchange unit 120 (see Fig. 5 B).The total header 110a of air intake is provided with air intake 111；The total header 110b of air outlet slit is set
It is equipped with air outlet slit 112.Each heat exchange unit 120 has flat pattern and including heat-exchanging tube bundle 130.Heat-exchanging tube bundle 130 is wrapped
Include air intake bobbin carriage 131a, air outlet slit bobbin carriage 131b and be connected to air intake bobbin carriage 131a and air outlet slit bobbin carriage 131b
Between several flat heat exchange tubes 132.As more clearly shown in Fig. 5 B, in each heat exchange unit 120 this several
Flat heat exchange tube 132 forms a line along the long side direction of its cross section.
In preferred exemplary, the length-width ratio of the cross section of flat heat exchange tube 132 is more than or equal to 10.With 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 is the plate heat exchange tube for the square-section for being more than 10 with length-width ratio.
In this example, the air intake bobbin carriage 131a of heat-exchanging tube bundle 130 and air outlet slit bobbin carriage 131b respectively with air
The total header 110a of entrance and the total header 110b connections of air outlet slit.The connection can be the non-dismountable formula connection such as welding, also may be used
To be the detachable connection for example realized by spigot-and-socket quick union or ferrule structure.
Combustion air needed for CO boilers 10 passes through the total header 110a of air inlet entrance of air intake 111, air intake
Total header 110a distributes air to the air intake bobbin carriage 131a for each heat exchange unit 120 being connected thereto, so that air
Into each heat exchanger tube 132 and 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 the total header 110b of air outlet slit, and the burner 11 and/or burner hearth 12 of CO boilers 10 are delivered to by air outlet slit 112,
Then CO boiler combustions are entered after being mixed with fuel.
As shown in Figure 5 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. 4, preferably the flat pattern of the heat exchange unit 120 of air preheater 100 is (parallel to Fig. 5 A paper
Facial plane direction) parallel to the horizontal direction of 15 directions of vertical direction and flue outlet.Because incineration flue gas is by the list that steams
Vertically flowed from the top down first after member 14, then when reaching flue end yawing moment along the institute of flue outlet 15
The horizontal direction flowing of direction, so making the heat exchange unit 120 of air preheater 100 has flat pattern, and make it that this is flat
Flat shape shape parallel to it is described vertically and horizontally, be all conducive to reducing the increased flue gases of the institute of air preheater 100 be set
Resistance, so as to be conducive to keeping the firing efficiency of CO boilers.
Referring again to Fig. 5 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 member 120, for fixing the distance between each heat exchange unit 120.So be conducive to the structure for strengthening air preheater 100 steady
It is qualitative, improve service life.
In addition, in air preheater 100 shown in Fig. 5 A and Fig. 5 B, the total header 110a of air intake and air outlet slit always collect
Case 110b can be respectively arranged with condensate drain mouthfuls 113 and 114, for by air carry because the water produced by condensation is discharged.
Although being shown in Fig. 5 A and Fig. 5 B, each heat exchange unit 120 of air preheater 100 includes a heat-exchanging tube bundle
130, but the utility model is not limited to this.Fig. 6 shows a kind of modification of air preheater 100 shown in Fig. 5 A and Fig. 5 B,
Wherein each heat exchange unit 120 can include two heat-exchanging tube bundles 130.
Specifically, as shown in fig. 6, 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 to each other and air outlet slit bobbin carriage 131b, and positioned at two
The air intake bobbin carriage 131a and air outlet slit bobbin carriage 131b of two ends of heat-exchanging tube bundle 130 respectively with the total header of air intake
110a and the total header 110b connections of air outlet slit.Adjacent air intake bobbin carriage 131a and air outlet slit bobbin carriage 131b can lead to
Cross the modes such as welding unremovably to connect, for example can also be realized by spigot-and-socket quick union or ferrule structure detachable
Connection.
Although it should be appreciated by those skilled in the art that including two heat exchange above by reference to Fig. 6 with a heat exchange unit 120
Illustrated exemplified by tube bank 130, but the utility model is not limited to the particular number of heat-exchanging tube bundle, but can for example scheme
Heat-exchanging tube bundle 130 shown in 6 is unit according to being extended to exchange hot cell the need for use, is allowed to include more than two
Heat-exchanging tube bundle.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved 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 where not departing from the inventive concept, is carried out by above-mentioned technical characteristic or its equivalent feature
Other technical schemes formed by any combination.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical characteristic of energy carries out technical scheme formed by replacement mutually.
Claims (12)
1. a kind of flue gas processing device, for handling the regenerated flue gas that catalyst regeneration is produced in catalytic cracking process, the flue gas
Processing unit includes：
CO boilers, it includes burner hearth, the burner for being arranged on burner hearth bottom, the flue for being arranged on burner hearth downstream and and flue
With reference to the unit that steams, the burner receives fuel and combustion air enters wherein and burnt, and the burner hearth receives regeneration cigarette
Gas and combustion air enter wherein and burned, and the incineration flue gas that regenerated flue gas burning is produced is via the unit that steams from flue quilt
Discharge；With
Flue gas desulfurization device, it receives the incineration flue gas from the CO boilers and carries out desulfurization process to it,
Characterized in that, the flue gas processing device also includes steam unit and the flue gas desulfurization for being arranged on the CO boilers
Air preheater between device, warm-up combustion-supporting air is carried out for reclaiming the waste heat of incineration flue gas, and the fume treatment is filled
Put and be configured to the combustion air that the air preheater is preheated being sent to burner and burner hearth.
2. flue gas processing device as claimed in claim 1, it is characterised in that the air preheater is set to close to the cigarette
The entrance of desulfurization device, and the air preheater has a flue gas flow channel and air flow channel, the flue gas flow channel have with
The smoke inlet of the outlet of the flue of CO boilers and the exhanst gas outlet connected with the entrance of flue gas desulfurization device, the air
Runner has the air intake for receiving combustion air and the air outlet slit connected with least one of burner and burner hearth.
3. flue gas processing device as claimed in claim 2, it is characterised in that the flue gas desulfurization device includes desulfurizing tower, and
And the bearing of trend of the flue gas flow channel of the air preheater and the axis direction of desulfurizing tower are at an acute angle.
4. flue gas processing device as claimed in claim 3, it is characterised in that the acute angle is in the range of 30-60 °.
5. flue gas processing device as claimed in claim 1, it is characterised in that the air preheater preheats for built-in air
Device, and including：
The total header of air intake, it is provided with air intake；
The total header of air outlet slit, it is provided with air outlet slit；With
Several heat exchange units, they are arranged side by side and are connected in parallel on the total header of air intake and air outlet slit is total each other
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 exports bobbin carriage and several flat heat exchange tubes for being connected between air intake bobbin carriage and air outlet slit bobbin carriage, this several it is flat
Flat heat exchanger tube forms a line along the long side direction of its cross section.
6. flue gas processing device as claimed in claim 5, it is characterised in that the length-width ratio of the cross section of the flat heat exchange tube
More than or equal to 10.
7. flue gas processing device as claimed in claim 5, it is characterised in that the air intake bobbin carriage and air outlet slit bobbin carriage
It is made up of respectively flat tube, and the short side direction of the cross section of the flat tube and the cross section of the flat heat exchange tube is short
Edge direction is consistent.
8. flue gas processing device as claimed in claim 5, it is characterised in that the air preheater also includes distance plate, should
Distance plate is located between several described heat exchange units, for fixing the distance between each heat exchange unit.
9. the flue gas processing device as any one of claim 5-8, it is characterised in that the air preheater is built in
In the flue of the porch of the flue gas desulfurization device；In the air outlet slit and burner and burner hearth of the air preheater extremely
Few one connection；Space between the flue and air preheater of the flue gas desulfurization device is formed to be flowed through for incineration flue gas
Flue gas flow channel.
10. the flue gas processing device as any one of claim 5-8, it is characterised in that air preheater is built in institute
State being located in the flue in unit downstream of steaming for CO boilers；In the air outlet slit and burner and burner hearth of the air preheater
At least one connection；Space between the flue and air preheater of the CO boilers forms the cigarette flowed through for incineration flue gas
Flow channel.
11. flue gas processing device as claimed in claim 10, it is characterised in that the flue edge for being located at unit downstream of steaming
Vertical direction extends, and with the flue outlet along a horizontal direction opening, the air preheater is arranged on just to be gone out to flue
Mouthful position at, and the heat exchange unit of the air preheater flat pattern parallel to the vertical direction and the level
Direction.
12. flue gas processing device as claimed in claim 11, it is characterised in that be provided with the flue along the level side
To the guide rail of extension, the air preheater is provided with guide wheel and is movably erected on the guide rail by the guide wheel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621336558.8U CN206540144U (en) | 2016-12-07 | 2016-12-07 | Catalytic cracking flue gas processing unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621336558.8U CN206540144U (en) | 2016-12-07 | 2016-12-07 | Catalytic cracking flue gas processing unit |
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| CN206540144U true CN206540144U (en) | 2017-10-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765211A (en) * | 2016-12-07 | 2017-05-31 | 洛阳明远石化技术有限公司 | Catalytic cracking flue gas processing unit |
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2016
- 2016-12-07 CN CN201621336558.8U patent/CN206540144U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765211A (en) * | 2016-12-07 | 2017-05-31 | 洛阳明远石化技术有限公司 | Catalytic cracking flue gas processing unit |
| CN106765211B (en) * | 2016-12-07 | 2024-01-09 | 洛阳明远石化技术有限公司 | Catalytic cracking flue gas treatment device |
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Effective date of registration: 20190325 Address after: 471003 Level 1302, 1st Floor, Yinkun Science Park, No. 6 Fenghua Road, Luoyang High-tech Development Zone, Henan Province Co-patentee after: Luoyang Ruichang Environmental Engineering Co., Ltd. Patentee after: LUOYANG MINGYUAN PETROCHEMICAL TECHNOLOGY CO., LTD. Address before: 471003 Level 1302, 1st Floor, Yinkun Science Park, No. 6 Fenghua Road, Luoyang High-tech Development Zone, Henan Province Patentee before: LUOYANG MINGYUAN PETROCHEMICAL TECHNOLOGY CO., LTD. |
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