CN204648992U - A kind of heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick - Google Patents
A kind of heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick Download PDFInfo
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- CN204648992U CN204648992U CN201520348131.9U CN201520348131U CN204648992U CN 204648992 U CN204648992 U CN 204648992U CN 201520348131 U CN201520348131 U CN 201520348131U CN 204648992 U CN204648992 U CN 204648992U
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Abstract
The utility model discloses a kind of heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick, belong to steel rolling process process waste heat of flue gas of heating furnace recovery and utilization technology field.In the utility model, heat exchanger body comprises two or more single assemblies be parallel to each other, and gap between adjacent single assembly is identical.The many heat exchange vertical tubes vertically arranged are arranged in a row with identical spacing, its upper port be communicated with respectively horizontally disposed at one on heat exchange transverse tube side, its lower port is communicated with respectively on a horizontally disposed lower heat exchange transverse tube side.Upper heat exchange transverse tube right-hand member, left end are communicated with heat-exchange working medium carrier pipe, lower heat-exchange working medium carrier pipe respectively, and single assembly surface all scribbles non-sticking lining.The utility model effectively solves the problem of low-temperature dew point corrosion in the waste heat recovery of heater for rolling steel low-temperature flue gas, bonding and stifled ash, both ensure that high efficiency and the serviceability of heat transmission equipment, and has again saved resource, protect environment.
Description
Technical field
The utility model belongs to steel rolling process process waste heat of flue gas of heating furnace recovery and utilization technology field, more particularly, relates to a kind of heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick.
Background technology
The existing heater for rolling steel thermal efficiency generally only has 20% ~ 30%, about has the thermal loss of 70% ~ 80%, and the heat loss that wherein flue gas is taken away is about 30% ~ 35%.The heat that flue gas is taken away, is not only wasted energy to air by smoke stack emission, also can cause thermal pollution to air.With certain annual production 1000 ten thousand tons of steel, the Metallurgical Enterprise of the 500000 tons of standard coals that consume energy in year is example, after supposing to adopt low-temperature flue gas waste heat deep exploitation technology, smog discharge temperature is reduced to 95 DEG C from 180 DEG C, will reclaims heat 5.25 × 10
11kJ, be equivalent to save 17900 tons of standard coals every year, these heat recovery can obtain the hot water about 2,270,000 tons of 80 DEG C for the production of hot water, economic worth about a year 1.14 hundred million yuan (by hot water per ton 50 yuan calculating).
In current iron and steel enterprise, take a series of conservation measures when heater for rolling steel design and production management: do from source, managed to reduce flue gas tapping temperature and exhaust gas volumn; The facility Mist heat recoverings such as air preheater, gas preheater and steam superheater are set in flue.These conservation measures go out preheater flue-gas temperature after implementing still has 250 ~ 330 DEG C; Some iron and steel enterprise increases energy-conservation dynamics now, as adopted waste heat boiler recovery technology, utilizing fume afterheat to produce saturated vapor, utilizing for production or life.Utilize the method for waste heat boiler, generally flue-gas temperature can be dropped to about 180 DEG C from 250 DEG C.
The use of waste heat boiler makes fume afterheat obtain good recycling, but utilize technical research very few for the fume afterheat of less than 180 DEG C in prior art, and the low-temperature surface burn in flue on preheater and waste heat boiler block up the further recycling that ash and adhesion problem seriously constrain heater for rolling steel fume afterheat always.
In order to prevent the cold end corrosion on heat exchanger and waste heat boiler, stifled ash and adhesion problem, often taking following measures: sulphur removal from fuel and flue gas, preventing the generation of sulfur trioxide, to reduce the dew-point temperature of flue gas.But at present, the method technology is still immature, and practical application difficulty is very large.In API Std ANSI/API560-1996 " general oil refining apparatus flame heating furnace ", several solution is proposed to the dew-point corrosion resistant measure of flue gas afterbody, namely Low-Alloy Corrosion Resistant steel and employing is adopted to have the heating surface of enamel layer, but up to the present also do not find out a kind of can the low-alloy steel of effectively anti-low-temperature dew point corrosion, 4 ~ 5 times that apply more 09CrCuSb (ND steel) its sulfuric-resisting performance also just carbon steel in laboratory conditions, 3 times of normally carbon steel in commercial Application situation.And once enter dew point, the life-span of 2 months also can only be had for the thick carbon steel of 10mm, this is true for a large amount of use practical proofs, and enter the ND steel of dew point, its actual life is all about half a year.And to the heater for rolling steel that steel industry runs continuously, obviously can not meet the demands this service life; Although 316L steel alloy has good decay resistance, also can not be corroded in chloroazotic acid, its price is about about 8 times of straight carbon steel, and use cost is too high; Enamel surfaces is adopted at heating furnace end, although solve flue gas corrosion, reduce terminal temperature and improve thermal efficiency of heating furnace, but enamel fragility and pipe heat exchanger steel surface are expanded inharmonic problem and the problem that has enamel layer Welding of Heat-exchanger to make, still well do not solve, be only in conceptual phase.
Applicant Anhui University of Technology has submitted the related application that waste heat of coke oven crude gas reclaims heat exchange unit, its specifying information is as follows, application number: 2015101199017, invention and created name: a kind of anti stick gravity flow waste heat of coke oven crude gas reclaims the construction method of heat exchange unit, applicant: Anhui University of Technology, the applying date: on March 18th, 2015, this application case discloses the construction method that a kind of anti stick gravity flow waste heat of coke oven crude gas reclaims heat exchange unit, belongs to coking process raw coke oven gas heat recovery technical field.In this application case, the construction method of waste heat recovery heat exchange unit is: the welding of single assembly; The clear end of single assembly; Aerosol spray non-sticking lining; The welding of heat exchange unit, multiple single assembly arranges with uniform distances and is welded and fixed the heat exchange unit body together forming a rectangular structure, all upper heat-exchange working medium carrier pipe upper port are welded respectively and are communicated with on vapour-discharge tube, all lower heat-exchange working medium carrier pipe lower port are welded respectively and are communicated with on the pipe of cooling water inlet, heat exchange unit body is when assembling, and the heat-insulating shield place plane on the downside of heat exchange unit body and the angle of horizontal plane are 15 ~ 45 degree.This application case adopt first weld single assembly, then spray the construction of non-sticking lining, be not only easy to the spraying that non-sticking lining is full and uniform, and avoid non-sticking lining weld time suffer high temperature and mechanical damage.But, also there is following technological deficiency in the waste heat recovery heat exchange unit manufactured in this application case: the waste heat recovery heat exchange unit manufactured in this application case is only only applicable to the waste heat recovery of coal oven dithio-gas, when the waste heat recovery heat exchange unit manufactured in application case is applied to heater for rolling steel, serious bonding or clogging phenomenon can be there is.
In sum, how to design a kind of flue gas waste heat recovery heat exchanger that can be applied to heater for rolling steel, overcoming the stifled ash of the low-temperature surface burn into that runs in existing flue gas waste heat recovery technology and adhesion problem, is the technical problem that in prior art, is needed badly solution.
Utility model content
1. the utility model technical problem that will solve
The utility model overcomes the stifled ash of the low-temperature surface burn into run in existing flue gas waste heat recovery technology and adhesion problem; provide a kind of heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick; effectively solve low-temperature dew point corrosion in the waste heat recovery of heater for rolling steel low-temperature flue gas, bonding and stifled grey problem; both high efficiency and the serviceability of heat transmission equipment had been ensure that; again save resource, protect environment.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
The heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick of the present utility model, comprises heat exchange vertical tube, heat exchange transverse tube and heat-exchange working medium carrier pipe;
Wherein: described heat exchange transverse tube two-port sealing, heat exchange transverse tube comprises heat exchange transverse tube and lower heat exchange transverse tube; Described heat-exchange working medium carrier pipe comprises heat-exchange working medium carrier pipe and lower heat-exchange working medium carrier pipe;
Heat exchanger body is rectangular structure, and heat exchanger body comprises two or more single assemblies, and two or more single assemblies above-mentioned are parallel to each other, and gap between adjacent single assembly is identical;
Described single assembly comprises heat exchange vertical tube, upper heat exchange transverse tube, lower heat exchange transverse tube, upper heat-exchange working medium carrier pipe and lower heat-exchange working medium carrier pipe, the many heat exchange vertical tubes vertically arranged are arranged in a row with identical spacing, the upper port of the heat exchange vertical tube be arranged in a row be communicated with respectively horizontally disposed at one on heat exchange transverse tube side, the lower port of the heat exchange vertical tube be arranged in a row is communicated with respectively on a horizontally disposed lower heat exchange transverse tube side; Described upper heat exchange transverse tube right-hand member is communicated with a upper heat-exchange working medium carrier pipe vertically arranged; Described lower heat exchange transverse tube left end is communicated with a lower heat-exchange working medium carrier pipe vertically arranged;
All single assembly surfaces all scribble non-sticking lining.
Further improve as the utility model, upper and lower sides, the side, front and back of described heat exchanger body are all provided with heat-insulating shield, and the single assembly on heat exchanger body is fixed together by heat-insulating shield.
Further improve as the utility model, all upper heat-exchange working medium carrier pipe upper port are communicated with respectively on vapour-discharge tube, and all lower heat-exchange working medium carrier pipe lower port are communicated with respectively on the pipe of cooling water inlet.
Further improve as the utility model, the center distance on described heat exchanger body between adjacent single assembly is 60 ~ 120mm.
Further improve as the utility model, on described single assembly, the center distance of adjacent heat exchange vertical tube is 45 ~ 80mm.
Further improve as the utility model, the diameter of described heat exchange vertical tube is 25 ~ 50mm, and the diameter of heat exchange transverse tube is 50 ~ 100mm, and the diameter of heat-exchange working medium carrier pipe is 30 ~ 50mm, and the length of heat-exchange working medium carrier pipe is 150 ~ 500mm; The total height of heat exchanger body is 1500 ~ 3500mm.
3. beneficial effect
The technical scheme adopting the utility model to provide, compared with prior art, has following remarkable result:
(1) the heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick of the present utility model, embody rule occasion according to heater for rolling steel flue gas waste heat recovery designs, first, heat exchanger body leaves certain interval between adjacent single assembly, heater for rolling steel flue gas can be made more smoothly by heat exchanger body, largely avoided on single assembly and form stifled ash and bonding phenomenon; Secondly, the arrangement on single assembly between adjacent heat exchange vertical tube is loose arrangement, is conducive to carrying out high efficient heat exchanging to heater for rolling steel flue gas.
(2) the heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick of the present utility model, all non-sticking lining is scribbled on the surface of all single assemblies, applicant is through great many of experiments, find that this nano anti-corrosive non-sticking lining can effectively prevent flue gas low-temperature corrosion phenomenon, and to particles such as the dusts in flue gas, there is not viscosity; In the utility model, non-sticking lining arranges the problem effectively solving heat exchanger tube surface low-temperature dew point corrosion in heater for rolling steel flue gas heat recovery process, the particle bond such as the dust in flue gas can be prevented again to heat exchanger tube surface, improve the service life of heat exchanger, and the non-sticking lining cost used is lower, easy commercial application.
(3) the heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick of the present utility model, in heat transfer process, all the time heat-exchange working medium is full of in all single assemblies, and the temperature of heat-exchange working medium is not less than 80 DEG C, both ensure that the efficient, stable and continuous of heat transfer process, in turn ensure that single assembly surface temperature can not be too low, prevent single assembly surface from occurring low-temperature flue gas dew point corrosion.
(4) flue-gas temperature is just reduced to about 180 DEG C by existing heater for rolling steel flue gas heat recovery technology, and the waste heat between 95 DEG C to 180 DEG C is not effectively recycled, cause the waste of the energy, and flue gas directly discharge environment also unfavorable; Simultaneously in the flue gas process of recovery about 180 DEG C, still inevitably cause heat exchanger surface cold end corrosion, have a strong impact on the recovery of residual heat resources; The heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick of the present utility model, effectively solve heat exchanger surface low-temperature dew point corrosion and sticky grey problem in flue gas waste heat recovery process, improve serviceability and the life-span of heat exchanger, and the discharge temperature after flue gas heat exchange can be reduced to about 95 DEG C, substantially increase the utilization ratio of fume afterheat, fully reclaim effective sensible heat of flue gas, avoided the waste of heat, meet the requirement of energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the structural representation of the heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick of the present utility model;
Fig. 2 is the structural representation of heat exchanger body in the utility model;
Fig. 3 is the structural representation of single assembly in the utility model;
Fig. 4 is the left TV structure schematic diagram of heat exchanger body in the utility model.
Label declaration in figure: 1, heat exchange vertical tube; 201, upper heat exchange transverse tube; 202, lower heat exchange transverse tube; 301, upper heat-exchange working medium carrier pipe; 302, lower heat-exchange working medium carrier pipe; 4, cooling water inlet pipe; 5, vapour-discharge tube; 6, heat-insulating shield.
Detailed description of the invention
For understanding content of the present utility model further, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
Composition graphs 1, Fig. 2, Fig. 3 and Fig. 4, the heater for rolling steel flue gas waste heat recovery heat exchanger of the corrosion-resistant anti-stick of the present embodiment, comprise heat exchange vertical tube 1, heat exchange transverse tube and heat-exchange working medium carrier pipe, wherein: heat exchange transverse tube two-port seals, and heat exchange transverse tube comprises heat exchange transverse tube 201 and lower heat exchange transverse tube 202; Heat-exchange working medium carrier pipe comprises heat-exchange working medium carrier pipe 301 and lower heat-exchange working medium carrier pipe 302; Heat exchanger body is rectangular structure, and heat exchanger body comprises five single assemblies, and five single assemblies are parallel to each other, and gap between adjacent single assembly is identical.Heat exchanger body needs to adjust angle and direction according to actual flue when assembling.Upper and lower sides, the side, front and back of heat exchanger body are all provided with heat-insulating shield 6, and the single assembly on heat exchanger body is fixed together by heat-insulating shield 6.
Single assembly comprises heat exchange vertical tube 1, upper heat exchange transverse tube 201, lower heat exchange transverse tube 202, upper heat-exchange working medium carrier pipe 301 and lower heat-exchange working medium carrier pipe 302, the many heat exchange vertical tubes 1 vertically arranged are arranged in a row with identical spacing, the upper port of the heat exchange vertical tube 1 be arranged in a row be communicated with respectively horizontally disposed at one on heat exchange transverse tube 201 side, the lower port of the heat exchange vertical tube 1 be arranged in a row is communicated with respectively on horizontally disposed lower heat exchange transverse tube 202 side; Upper heat exchange transverse tube 201 right-hand member is communicated with a upper heat-exchange working medium carrier pipe 301 vertically arranged; Lower heat exchange transverse tube 202 left end is communicated with a lower heat-exchange working medium carrier pipe 302 vertically arranged.All upper heat-exchange working medium carrier pipe 301 upper port are communicated with respectively on vapour-discharge tube 5, and all lower heat-exchange working medium carrier pipe 302 lower port are communicated with respectively on cooling water inlet pipe 4.All single assembly surfaces all scribble non-sticking lining.
Heat-exchange working medium in the present embodiment (being water in the present embodiment) enters heat exchanger body from cooling water inlet pipe 4, in heat exchanger body with produce water vapour after flue gas heat exchange, water vapour is discharged by vapour-discharge tube 5.
In the present embodiment, the total height of heat exchanger body is 1500mm, and total length, the overall width of heat exchanger body adjust according to the needs of actual flue or application places.Consider exhaust capacity and the heat transfer intensity of heater for rolling steel flue gas, the diameter of heat exchange vertical tube 1 is 25mm, and the diameter of heat exchange transverse tube 201,202 is 50mm.Calculate according to thermodynamic equilibrium, consider the function of steam Transportation, the diameter of heat-exchange working medium carrier pipe 301,302 is 30mm simultaneously, and the length of heat-exchange working medium carrier pipe 301,302 is 150mm.The length of heat exchange vertical tube 1 is determined by heat exchanger body overall dimensions, and therefore the length of heat exchange vertical tube 1 is 1500mm.
The heater for rolling steel flue gas waste heat recovery heat exchanger of the corrosion-resistant anti-stick of the present embodiment is the further improvement of 2015101199017 application cases to number of patent application.The heat exchanger of the present embodiment is mainly used in heater for rolling steel flue gas waste heat recovery, can also for the production of the waste heat recovery of low temperature exhaust steam in process.In order to the heat transfer of enhanced heat exchange device body, consider practical application condition, the center distance on heat exchanger body between adjacent single assembly is 60mm simultaneously, and on single assembly, the center distance of adjacent heat exchange vertical tube 1 is 45mm.The heater for rolling steel flue gas waste heat recovery heat exchanger of the corrosion-resistant anti-stick of the present embodiment, embody rule occasion according to heater for rolling steel flue gas waste heat recovery designs, first, heat exchanger body leaves certain interval (center distance in the present embodiment on heat exchanger body between adjacent single assembly is 60mm) between adjacent single assembly, heater for rolling steel flue gas can be made to pass through heat exchanger body more smoothly, greatly reduce and single assembly occurs (and number of patent application is in the application case of 2015101199017 for stifled ash and bonding phenomenon, in order to form airtight tar circulation passage, adjacent single assembly is adjacent being fixed together, very close to each other between adjacent single assembly).Secondly, arrangement on single assembly between adjacent heat exchange vertical tube 1 is loose arrangement (in the present embodiment, on single assembly, the center distance of adjacent heat exchange vertical tube 1 is 45mm), (and number of patent application is in the application case of 2015101199017 to be conducive to carrying out high efficient heat exchanging to heater for rolling steel flue gas, on single assembly outside heat exchange unit body, the spacing of adjacent heat exchange vertical tube is 2 ~ 10mm, arrangement on single assembly outside its heat exchange unit body between adjacent heat exchange vertical tube is tight arrangement, this tight arrangement is applicable in waste heat of coke oven crude gas recovery, but be not but suitable for the application scenario of heater for rolling steel flue gas waste heat recovery).
The non-sticking lining used in the present embodiment, it is the non-viscous paint spraying existed on the market, the i.e. double-deck fluoro coatings of Dajin Fluorine Coating (Shanghai) Co., Ltd. (http://www.daikincoating.com) water-based of producing, specific product model is bed material: EK-1909S-601L, fabric: EK-3709M-650L.Need benly be, the non-sticking lining used in the present embodiment belongs to non-infiltration non-sticking lining, there is efficient corrosion resistance and antifouling not viscosity, for low-temperature dew point corrosion and the bonding of heat exchanger surface in flue gas waste heat recovery process in heater for rolling steel flue, stifled grey problem, applicant is through great many of experiments, non-sticking lining in creationary discovery use the present embodiment can to low-temperature dew point corrosion and bonding, clogging phenomenon plays significant inhibitory action, namely this non-sticking lining effectively can suppress the acid dew piont corrosion in flue gas, and the particle such as dust in flue gas is difficult to bonding is attached to coating surface, this coating not easily bonds or is corroded.Applicant finds through experiment, and the high temperature resistant property of this non-sticking lining is excellent, and not easily by high temperature, service life is longer, and with low cost, easy commercial application.
The operation principle of the heater for rolling steel flue gas waste heat recovery heat exchanger of the corrosion-resistant anti-stick of the present embodiment is: the flue gas that in rolling process, heating furnace produces is discharged by flue, flue gas is first through air preheater or gas preheater, again by the heat exchanger of the present embodiment, flue gas is entered by the left side of heat exchanger body, discharges from the right side of heat exchanger body.Tube bank in heat exchanger body forms the circulation passage of flue gas, flue gas in circulation passage by heat convection and heat transfer by heat vaporized for the heat-exchange working medium in tube bank, drum is entered along vapour-discharge tube 5 after heat-exchange working medium vaporization, by with the steam water interface generation boiling heat transfer in drum after, produce the steam of 80 ~ 95 DEG C, enter pipe network again, liquid phase heat-exchange working medium enters heat exchanger body by cooling water inlet pipe 4 thus constantly supplements heat-exchange working medium simultaneously.The flue gas of 160 ~ 200 DEG C is reduced to 90 ~ 100 DEG C after heat exchanger body, then enters chimney discharge by flue afterbody.In flue gas cool-down process, sulfur trioxide in flue gas and steam gas react and generate sulfuric acid vapor at finite concentration, temperature, if now equipment surface temperature is lower than acid dew point, sulfuric acid vapor will in equipment wall surface condensation, thus heat exchanging tube-surface produces corrosion.In addition, the flying dust in flue gas also may be bondd by sulfuric acid, forms dust stratification on heat exchanger tube surface, these dust stratifications are attached to heat exchanger tube on the surface more, heat exchanger causes bonding on the one hand, also more easily adsorbs the dust in flue gas on the other hand, thus the corrosion on aggravation heat exchanger tube surface.But the use of non-sticking lining makes sulfuric acid vapor cannot corrode heat exchanger tube surface, and the dust granule in flue gas also can come off from pipe because of Action of Gravity Field after adhering to heat exchanger tube surface, can not bond.The heat exchange form of heat exchanger body tube bank and the setting of non-sticking lining in the present embodiment; the two cooperatively interacts; effectively solve low-temperature dew point corrosion in the waste heat recovery of heater for rolling steel low-temperature flue gas, bonding and stifled grey problem; both high efficiency and the serviceability of heat transmission equipment had been ensure that; again save resource, protect environment.
Embodiment 2
The heater for rolling steel flue gas waste heat recovery heat exchanger of the corrosion-resistant anti-stick of the present embodiment is substantially the same manner as Example 1, and its difference is: the center distance on heat exchanger body between adjacent single assembly is 120mm; On single assembly, the center distance of adjacent heat exchange vertical tube 1 is 80mm; The diameter of heat exchange vertical tube 1 is 50mm; The diameter of heat exchange transverse tube 201,202 is 100mm; The diameter of heat-exchange working medium carrier pipe 301,302 is 50mm; The length of heat-exchange working medium carrier pipe 301,302 is 500mm; The total height of heat exchanger body is 3500mm.
Embodiment 3
The heater for rolling steel flue gas waste heat recovery heat exchanger of the corrosion-resistant anti-stick of the present embodiment is substantially the same manner as Example 1, and its difference is: the center distance on heat exchanger body between adjacent single assembly is 90mm; On single assembly, the center distance of adjacent heat exchange vertical tube 1 is 60mm; The diameter of heat exchange vertical tube 1 is 35mm; The diameter of heat exchange transverse tube 201,202 is 75mm; The diameter of heat-exchange working medium carrier pipe 301,302 is 40mm; The length of heat-exchange working medium carrier pipe 301,302 is 325mm; The total height of heat exchanger body is 2500mm.
Schematically above be described the utility model and embodiment thereof, this description does not have restricted, and also just one of the embodiment of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.
Claims (6)
1. a heater for rolling steel flue gas waste heat recovery heat exchanger for corrosion-resistant anti-stick, is characterized in that: comprise heat exchange vertical tube (1), heat exchange transverse tube and heat-exchange working medium carrier pipe;
Wherein: described heat exchange transverse tube two-port sealing, heat exchange transverse tube comprises heat exchange transverse tube (201) and lower heat exchange transverse tube (202); Described heat-exchange working medium carrier pipe comprises heat-exchange working medium carrier pipe (301) and lower heat-exchange working medium carrier pipe (302);
Heat exchanger body is rectangular structure, and heat exchanger body comprises two or more single assemblies, and two or more single assemblies above-mentioned are parallel to each other, and gap between adjacent single assembly is identical;
Described single assembly comprises heat exchange vertical tube (1), upper heat exchange transverse tube (201), lower heat exchange transverse tube (202), upper heat-exchange working medium carrier pipe (301) and lower heat-exchange working medium carrier pipe (302), the many heat exchange vertical tubes (1) vertically arranged are arranged in a row with identical spacing, the upper port of the heat exchange vertical tube (1) be arranged in a row be communicated with respectively horizontally disposed at one on heat exchange transverse tube (201) side, the lower port of the heat exchange vertical tube (1) be arranged in a row is communicated with respectively on horizontally disposed lower heat exchange transverse tube (202) side, described upper heat exchange transverse tube (201) right-hand member is communicated with a upper heat-exchange working medium carrier pipe (301) vertically arranged, described lower heat exchange transverse tube (202) left end is communicated with a lower heat-exchange working medium carrier pipe (302) vertically arranged,
All single assembly surfaces all scribble non-sticking lining.
2. the heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick according to claim 1, it is characterized in that: the upper and lower sides of described heat exchanger body, side, front and back are all provided with heat-insulating shield (6), the single assembly on heat exchanger body is fixed together by heat-insulating shield (6).
3. the heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick according to claim 2, it is characterized in that: all upper heat-exchange working medium carrier pipe (301) upper port are communicated with respectively on vapour-discharge tube (5), all lower heat-exchange working medium carrier pipe (302) lower port are communicated with respectively on cooling water inlet pipe (4).
4. the heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick according to claim 3, is characterized in that: the center distance on described heat exchanger body between adjacent single assembly is 60 ~ 120mm.
5. the heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick according to claim 4, is characterized in that: on described single assembly, the center distance of adjacent heat exchange vertical tube (1) is 45 ~ 80mm.
6. the heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick according to claim 5, it is characterized in that: the diameter of described heat exchange vertical tube (1) is 25 ~ 50mm, the diameter of heat exchange transverse tube (201,202) is 50 ~ 100mm, the diameter of heat-exchange working medium carrier pipe (301,302) is 30 ~ 50mm, and the length of heat-exchange working medium carrier pipe (301,302) is 150 ~ 500mm; The total height of heat exchanger body is 1500 ~ 3500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520348131.9U CN204648992U (en) | 2015-05-26 | 2015-05-26 | A kind of heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520348131.9U CN204648992U (en) | 2015-05-26 | 2015-05-26 | A kind of heater for rolling steel flue gas waste heat recovery heat exchanger of corrosion-resistant anti-stick |
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| CN204648992U true CN204648992U (en) | 2015-09-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876925A (en) * | 2018-04-14 | 2019-06-14 | 青岛科技大学 | Flue gas waste heat utilization and intelligent electric field intensity adjusting system thereof |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876925A (en) * | 2018-04-14 | 2019-06-14 | 青岛科技大学 | Flue gas waste heat utilization and intelligent electric field intensity adjusting system thereof |
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