CN206269607U - High-temperature flue gas cooling heat exchanger - Google Patents

High-temperature flue gas cooling heat exchanger Download PDF

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Publication number
CN206269607U
CN206269607U CN201621277407.XU CN201621277407U CN206269607U CN 206269607 U CN206269607 U CN 206269607U CN 201621277407 U CN201621277407 U CN 201621277407U CN 206269607 U CN206269607 U CN 206269607U
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China
Prior art keywords
gas
preheater
air
temperature flue
air preheater
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CN201621277407.XU
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Chinese (zh)
Inventor
江惠兴
江晓涛
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JIANGSU JIANGTAO ENVIRONMENT ENGINEERING Co Ltd
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JIANGSU JIANGTAO ENVIRONMENT ENGINEERING Co Ltd
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Abstract

The utility model is related to a kind of high-temperature flue gas cooling heat exchanger, and it includes frame(1), the frame(1)Side is provided with former and later two air preheaters(2), the frame(1)Opposite side is provided with a gas preheater(3), the air preheater of rear side(2)The first exhanst gas outlet(22)With the air preheater of front side(2)The first gas approach(21)Between pass through the first exhaust gases passes(4)It is connected, the air preheater of front side(2)With gas preheater(3)It is connected, the air preheater of front side(2)Air outlet slit(24)With the air preheater of rear side(2)Air intlet(23)Between pass through air duct(6)It is connected.A kind of high-temperature flue gas cooling heat exchanger of the utility model, it can not only carry out recycling to high-temperature flue-gas, and also the gas temperature of low temperature is heated to manufacturing technique requirent, reach cooling and the effect of energy-conservation.

Description

High-temperature flue gas cooling heat exchanger
Technical field
The utility model is related to a kind of high-temperature flue gas cooling heat exchanger, is mainly used in the row such as oil refining, petrochemical industry, metallurgy The high-temperature flue gas cooling of industry, belongs to cooling device technical field.
Background technology
Non-ferrous metal metallurgy kiln exit gas temperature is generally 700 ~ 1000 DEG C, before kiln tail blower fan and dust arrester installation is entered Flue-gas temperature 150 ~ 350 DEG C must be cooled to, the damage of dust collection device will be otherwise caused.The through type for commonly using at present Gas cooler, its cooling element typically uses circular tube structure, and flue dust easily blocks cooling element during production and application, uses Heat transfer effect is poor after a period of time, and when heat exchange element is damaged, maintenance is changed also very inconvenient.Application No. 201120167095.8 utility model patent discloses a kind of panel cooler, and its cooling unit uses flat tube configuration, high temperature , through being difficult dust stratification outside flat tube, its heat exchange area is larger, and heat transfer effect is higher for flue gas, and when heat exchange element is damaged, maintenance is changed Also it is very convenient.But because the heat exchange unit of the panel cooler uses flat tube configuration, therefore its compression strength is low, easily produce , there is the potential safety hazard in production in leakage deformation, therefore can only be applied to the heat exchange of air and flue gas, it is impossible to meets coal gas and changes The production requirement of heat;Other high-temperature flue gas are still higher by its temperature after single panel cooler, and the heat of flue gas is not obtained Make full use of, be expelled directly out to impact environment.
Utility model content
Technical problem to be solved in the utility model is directed to a kind of high-temperature flue gas cooling of above-mentioned prior art offer and changes Hot device, it is connected two air heat exchangers with the high temperature flue of a gas change heater, can not only be to high temperature Flue-gas temperature carries out recycling, and also the gas temperature of low temperature is heated to manufacturing technique requirent, reached cooling and The effect of energy-conservation.
The technical scheme in the invention for solving the above technical problem is:A kind of high-temperature flue gas cooling heat exchanger, it is wrapped Including rack, the frame side is provided with former and later two air preheaters, and the frame opposite side is provided with a gas preheater, The air preheater top is provided with the first gas approach and the first exhanst gas outlet, both sides difference before and after the air preheater Air intlet and air outlet slit are provided with, the gas preheater top is provided with the second gas approach and the second exhanst gas outlet, Both sides are respectively arranged with gas inlet and gas exit, the first flue gas of the air preheater of rear side before and after the gas preheater It is connected by the first exhaust gases passes between outlet and the first gas approach of the air preheater of front side, the air preheat of front side The second exhaust gases passes are connected between first exhanst gas outlet of device and the second gas approach of gas preheater, and the air of front side is pre- It is connected by air duct between the air outlet slit of hot device and the air intlet of the air preheater of rear side.
The air preheater includes casing and the first nowel in the first upper box, first being sequentially arranged from top to bottom Body, is provided with the first deashing device in first upper box, the first heat exchange element is provided with the first raising middle flask body, described First lower box bottom is provided with the first blanking device.
First heat exchange element uses flat tube configuration.
The gas preheater includes casing and the second nowel in the second upper box, second being sequentially arranged from top to bottom Body, is provided with the second deashing device in second upper box, the second heat exchange element is provided with the second raising middle flask body, described Second lower box bottom is provided with the second blanking device.
In the form of seamless steel pipe, seamless steel pipe rear and front end uses without seam weld second heat exchange element with card Connect.
Second deashing device includes crossbeam, and many chains, chain link of the chain or so are lifted with the crossbeam Both sides are provided with prickle.
Compared with prior art, the utility model has the advantage of:
1st, the utility model is connected the high temperature flue of two air heat exchangers and a gas change heater, energy It is enough that the high-temperature flue-gas from air preheater out are carried out into recycling, using the partial heat by the coal gas temperature of low temperature Degree is heated to manufacturing technique requirent, has reached the purpose of cooling and energy-conservation;
2nd, the heat exchange unit in the utility model in gas change heater uses seamless steel pipe, and it is connected by nothing with card Seam welding, can bear high-temperature and high-pressure conditions, solve former flat tube heat exchange unit compression strength it is low, it is easy leakage deformation, there is peace The problem of full hidden danger such that it is able to meet the production requirement of coal gas heat exchange;
3rd, the deashing mechanism of gas change heater is reasonable in design in the utility model, and barbed structure is set on deashing chain, Can 360 degree ground " without dead angle " cleaning pipes on dust stratification, can move back and forth lower shake in deashing mechanism again, being capable of thorough cleaning Fall the dust and dirt on seamless steel pipe outer wall, more conducively the heat transfer boundary condition of heat exchanger, the phenomenon of heat exchanger blocking is solved again, cooling contains Cloud of dust gas heat exchange efficiency is also further improved.
Brief description of the drawings
Fig. 1 is a kind of structural representation of high-temperature flue gas cooling heat exchanger of the utility model.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the top view of Fig. 1.
Fig. 4 is the structural representation of the deashing device of gas change heater in Fig. 1.
Wherein:
Frame 1
Air preheater 2
First gas approach 21
First exhanst gas outlet 22
Air intlet 23
Air outlet slit 24
First deashing device 25
First heat exchange element 26
First blanking device 27
Gas preheater 3
Second gas approach 31
Second exhanst gas outlet 32
Gas inlet 33
Gas exit 34
Second deashing device 35
Crossbeam 351
Chain 352
Prickle 353
Second heat exchange element 36
Second blanking device 37
First exhaust gases passes 4
Second exhaust gases passes 5
Air duct 6.
Specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in Fig. 1 ~ Fig. 4, a kind of high-temperature flue gas cooling heat exchanger in the present embodiment, it includes frame 1, the frame 1 side is provided with former and later two air preheaters 2, and the opposite side of the frame 1 is provided with a gas preheater 3, and the air is pre- The top of hot device 2 is provided with the first gas approach 21 and the first exhanst gas outlet 22, and both sides are respectively provided with before and after the air preheater 2 There are air intlet 23 and air outlet slit 24, the top of the gas preheater 3 is provided with the second gas approach 31 and the second flue gas goes out Mouth 32, both sides are respectively arranged with gas inlet 33 and gas exit 34, the air preheater of rear side before and after the gas preheater 3 It is connected by the first exhaust gases passes 4 between 2 the first exhanst gas outlet 22 and the first gas approach 21 of the air preheater 2 of front side It is logical, the second flue gas between the first exhanst gas outlet 22 of the air preheater 2 of front side and the second gas approach 31 of gas preheater 3 Passage 5 is connected, between the air intlet 23 of the air outlet slit 24 of the air preheater 2 of front side and the air preheater 2 of rear side It is connected by air duct 6;
The air preheater 2 includes casing and the first nowel in the first upper box, first being sequentially arranged from top to bottom Body, is provided with the first deashing device 25 in first upper box, the first heat exchange element 26 is provided with the first raising middle flask body, The first lower box bottom is provided with the first blanking device 27;
First heat exchange element 26 uses flat tube configuration;
The gas preheater 3 includes casing and the second nowel in the second upper box, second being sequentially arranged from top to bottom Body, is provided with the second deashing device 35 in second upper box, the second heat exchange element 36 is provided with the second raising middle flask body, The second lower box bottom is provided with the second blanking device 37;
In the form of seamless steel pipe, seamless steel pipe rear and front end uses without seam weld second heat exchange element 36 with card Connect;
Second deashing device 35 includes crossbeam 351, and many chains 352, the chain are lifted with the crossbeam 351 The 352 chain link left and right sides is provided with prickle 353.
Operation principle:
730 DEG C or so of high-temperature dust-containing flue gas enter from the first gas approach of rear side air preheater, from rear side air First exhanst gas outlet of preheater out enters the first gas approach of the air preheater of front side by the first exhaust gases passes afterwards, Then from the first exhanst gas outlet of front side air preheater out, now the temperature of high-temperature dust-containing flue gas probably at 460 DEG C, in the past About 30 DEG C of the air themperature that the air of side air preheater enters, air is heated to by after former and later two air preheaters 460;Entered by the second exhaust gases passes from the high-temperature flue gas of 460 DEG C or so out of the first exhanst gas outlet of front side air preheater Enter the second gas approach of gas preheater, then discharged from the second exhanst gas outlet of gas preheater, now flue-gas temperature drop As little as about 370 DEG C, from about 30 DEG C of the gas temperature that the gas inlet of gas preheater enters, coal gas is by interior after gas preheater It is heated to 260 DEG C or so.
In addition to the implementation, the utility model also includes other embodiment, all use equivalents or equivalent The technical scheme that substitute mode is formed, all should fall within the utility model scope of the claims.

Claims (6)

1. a kind of high-temperature flue gas cooling heat exchanger, it is characterised in that:It includes frame(1), the frame(1)Before side is provided with Latter two air preheater(2), the frame(1)Opposite side is provided with a gas preheater(3), the air preheater(2) Top is provided with the first gas approach(21)With the first exhanst gas outlet(22), the air preheater(2)Front and rear both sides set respectively It is equipped with air intlet(23)And air outlet slit(24), the gas preheater(3)Top is provided with the second gas approach(31)With Second exhanst gas outlet(32), the gas preheater(3)Front and rear both sides are respectively arranged with gas inlet(33)And gas exit (34), the air preheater of rear side(2)The first exhanst gas outlet(22)With the air preheater of front side(2)The first gas approach (21)Between pass through the first exhaust gases passes(4)It is connected, the air preheater of front side(2)The first exhanst gas outlet(22)With coal gas Preheater(3)The second gas approach(31)Between the second exhaust gases passes(5)It is connected, the air preheater of front side(2)Sky Gas is exported(24)With the air preheater of rear side(2)Air intlet(23)Between pass through air duct(6)It is connected.
2. a kind of high-temperature flue gas cooling heat exchanger according to claim 1, it is characterised in that:The air preheater(2) Including casing and the first lower box in the first upper box, first that are sequentially arranged from top to bottom, set in first upper box There is the first deashing device(25), the first heat exchange element is provided with the first raising middle flask body(26), the first lower box bottom It is provided with the first blanking device(27).
3. a kind of high-temperature flue gas cooling heat exchanger according to claim 2, it is characterised in that:First heat exchange element (26)Using flat tube configuration.
4. a kind of high-temperature flue gas cooling heat exchanger according to claim 1, it is characterised in that:The gas preheater(3) Including casing and the second lower box in the second upper box, second that are sequentially arranged from top to bottom, set in second upper box There is the second deashing device(35), the second heat exchange element is provided with the second raising middle flask body(36), the second lower box bottom It is provided with the second blanking device(37).
5. a kind of high-temperature flue gas cooling heat exchanger according to claim 4, it is characterised in that:Second heat exchange element (36)In the form of seamless steel pipe, seamless steel pipe rear and front end uses seamless welding with card.
6. a kind of high-temperature flue gas cooling heat exchanger according to claim 4, it is characterised in that:Second deashing device (35)Including crossbeam(351), the crossbeam(351)On be lifted with many chains(352), the chain(352)Chain link or so Both sides are provided with prickle(353).
CN201621277407.XU 2016-11-26 2016-11-26 High-temperature flue gas cooling heat exchanger Active CN206269607U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621277407.XU CN206269607U (en) 2016-11-26 2016-11-26 High-temperature flue gas cooling heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621277407.XU CN206269607U (en) 2016-11-26 2016-11-26 High-temperature flue gas cooling heat exchanger

Publications (1)

Publication Number Publication Date
CN206269607U true CN206269607U (en) 2017-06-20

Family

ID=59042970

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN206269607U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106482532A (en) * 2016-11-26 2017-03-08 江苏江涛环境工程有限公司 High-temperature flue gas cooling heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106482532A (en) * 2016-11-26 2017-03-08 江苏江涛环境工程有限公司 High-temperature flue gas cooling heat exchanger

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