CN203454079U - Novel exhaust-heat boiler - Google Patents

Novel exhaust-heat boiler Download PDF

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Publication number
CN203454079U
CN203454079U CN201320250389.6U CN201320250389U CN203454079U CN 203454079 U CN203454079 U CN 203454079U CN 201320250389 U CN201320250389 U CN 201320250389U CN 203454079 U CN203454079 U CN 203454079U
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CN
China
Prior art keywords
flue gas
heat exchange
gas
exchange core
flow chamber
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Expired - Fee Related
Application number
CN201320250389.6U
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Chinese (zh)
Inventor
吴植仁
周群龙
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Huaian Huadian Environmental Protection Machinery Manufacturing Co Ltd
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Huaian Huadian Environmental Protection Machinery Manufacturing Co Ltd
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Priority to CN201320250389.6U priority Critical patent/CN203454079U/en
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Publication of CN203454079U publication Critical patent/CN203454079U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a novel exhaust-heat boiler, which is composed of a flue gas inlet, a flue gas outlet, a flue gas inlet flow distribution chamber, a flue gas outlet flow distribution chamber, a spiral plate-type heat exchange core, a water filling port, a steam outlet, a sewage draining outlet, a liquid drop catching device, a level gauge, a safety valve, a shell, a top head, and a bottom head. The boiler is characterized in that the spiral plate-type heat exchange core is placed in the shell which comprises the top head and the bottom head; a spiral flue gas channel and a spiral water channel are arranged at the periphery of the spiral plate-type heat exchange core with a central pipe as the center; a fin is arranged in the flue gas channel; and flue gas is evenly distributed in the spiral flue gas channel of the heat exchange core via the flue gas inlet flow distribution chamber and the flue gas outlet flow distribution chamber. The boiler has the following beneficial effects: a large amount of exhaust heat generated during industrial processes is recovered into useful steam, and exhaust flue gas temperature is also reduced, so that thermal pollution is reduced to achieve energy saving, low carbon, environmental protection, economic benefits and so on. Meanwhile, tubes are replaced by plates and tube plates are removed, and thus material and processing costs are reduced.

Description

Novel waste heat boiler
Affiliated technical field
The utility model relates to a kind of equipment that utilizes industrial exhaust heat to produce steam.
Background technology
In industrial process, can produce a large amount of waste heats, as flue gas (200-300 ℃), blast furnace gas (approximately 1500 ℃), the process gas of chemical reaction (300-1000 ℃) ... along with industrial development, energy availability and demand is nervous, and environmental thermal pollution is serious, makes full use of these waste heats as a kind of thermal source, produce steam and hot water, so as to improving heat utilization rate, reduce fuel consumption, increase economic efficiency, low-carbon environment-friendly, become national governments, enterprise and broad masses' common recognition.Produced multiple waste heat boiler for this reason.
Known waste heat boiler, divides by heat exchange element structure, has two large classes.Be tube heat exchanging component and heat pipe heat exchanging component.The former is that traditional latter began for the sixties in last century.
The basic structure of pipe type exhaust heat boiler has: 1. shell-and-tube, and the principal contradiction solving due to need is different, and they have shell and tube, coil, U-shaped tubular type etc.2. chimney flue type, its structure and general industry boiler are similar, and the burner hearth that flue gas is built into by refractory material is furnished with comb in burner hearth, and the water vapor in comb becomes steam, and the pressure of flue gas is not high, but temperature is higher.3. pair bushing type, this class boiler is applicable to HTHP, and high-temperature technology gas is by inner sleeve, and water becomes steam at clamp sleeve interlayer.But waste heat boiler of the Schmidt chilling waste heat boiler in gas oil pyrolysis ethylene unit processed and the Sulzer air cooling in synthetic ammonia installation for example.
, because fume side heat transfer coefficient is very low, since the sixties in last century, there is heat pipe waste heat boiler in traditional tubular structure.Heat pipe has the high capacity of heat transmission and good isothermal characteristics, in a large number for waste heat boiler and air preheater.Because the heat of high-temperature flue gas is not directly to pass to water to be vaporized, centre how a diabatic process, high-temperature flue gas is first passed to heat the medium of hot casing pack, make its vaporization, by the medium of hot casing pack, heat is passed to the water in heat pipe outside again, its total heat transfer efficiency will reduce, and another shortcoming of heat pipe is, due to material and technological reason, the military service phase of heat pipe is not long.
Above-mentioned common shortcoming of take the steamer using waste heat stove that pipe is heat exchange element is to use tube sheet.
" the corrosion-resistant double axial flow spiral heat exchanger ZL200510041521.1 that a kind of heat exchange core can be taken out outward " being invented by inventor, the application of having succeeded in the industries such as oil, chemical industry, pharmacy, lithium bromide central air-conditioning, compression-type refrigeration unit, printing and dyeing.The heat exchange, single-phase flow condensing cooling, multiphase flow condensing cooling and the multiple flow heat exchange that include between water-water, air-water, vapour-water, liquid-water, liquid-liquid have application.
Realized with plate and having managed on behalf of another, cancelled tube sheet, price reduction material cost, reduces processing charges.
In addition also have following advantage:
1., although runner is very narrow, owing to having realized many parallel connections, so single-unit treating capacity is larger;
2. owing to being provided with shell, therefore bearing capacity can reach the same grade of shell-and-tube heat exchanger;
3. fluid is axial flow fin can be set, urgently large expansion secondary heat exchange face, can, according to the structure of the preferred fin of fluid behaviour, be more suitable for the heat exchange of gas and multiphase flow;
4. be pure countercurrent flow, the end temperature difference may diminish to 2 ℃;
5. can freely choose the width of flow path of two fluids, two fluids can be moved under optimum flow rate;
6. the water equivalent diameter of fluid is little, water side 3-5mm, and gas side 5-20mm, there is breathing heavily stream in (water < 0.3m/s, gas < 6m/s) under lower flow velocity;
7. fluid flow state is even, there is no dead angle, not only makes k value large, has weakened again fouling, can realize online free removal dirt, and operating cost and maintenance cost are all low.
Summary of the invention
In order to overcome the above-mentioned shortcoming of known pipe type exhaust heat boiler, the purpose of this utility model is to provide a kind of novel waste heat boiler.
The technical scheme adopting is: the spiral plate type heat exchange core replacement tube heat exchanging component of being invented by applicant in " the corrosion-resistant double axial flow spiral heat exchanger ZL200510041521.1 that a kind of heat exchange core can be taken out outward " is carried out to heat exchange; In fume side, fin is set, to strengthen the heat of giving of fume side.It is by gas approach, exhanst gas outlet, gas approach flow chamber, exhanst gas outlet flow chamber, spiral plate type heat exchange core, water filling port, steam (vapor) outlet, sewage draining exit, catch drop device, liquid level meter, safety valve, housing, top end socket, bottom bulkhead forms, it is characterized in that: the housing that spiral plate shell-type heat exchange core is placed in to top end socket and bottom bulkhead, described spiral plate shell-type heat exchange core, centered by central tube, in its surrounding, be provided with helical form gas flue and helical form water channel, fin is set in gas flue, flue gas is by import flue gas flow chamber and outlet flue gas flow chamber, make flue gas even distribution in the helical form gas flue of heat exchange core, heat is passed to the water in another spiral road and made its vaporization, upper arcuate shrouding and the shutoff of lower arcuate shrouding are used respectively in described gas approach flow chamber and exhanst gas outlet flow chamber, their cover plate and dividing plate arrange support member and gusset.
The effect of this scheme is: by producing a large amount of waste heat recoveries in industrial process, become useful steam, reduce again exhaust gas temperature, reduce thermal pollution, reach energy-conservation, low-carbon (LC), environmental protection, economic multinomial benefit; Realized with plate and having managed on behalf of another simultaneously, cancelled tube sheet, price reduction material cost, reduces processing charges.
Accompanying drawing explanation
Fig. 1 is boiler using steam residual-heat structure cutaway view;
Fig. 2 is Figure 1A-A cutaway view;
Fig. 3 is Figure 1B-B cutaway view;
Fig. 4 is Fig. 1 C-C cutaway view;
Fig. 5 is Fig. 1 D-D cutaway view.
In figure: 1. blowoff valve is taken over, 2. bottom bulkhead, 3. shell flange, 4. exhanst gas outlet, 5. lower arcuate shrouding, 6. spiral plate type heat exchange core assembly, 7. housing, 8. liquid level meter is taken over, 9. catch drop device, 10. top end socket, 11. steam outlet pipes, 12 safety valve connecting pipe, 13. gas approach, 14. upper arcuate shroudings, 15. water filling ports, 16. gas approach flow room cover plates, 17. gas approach flow chamber central dividing plates, 18. side, gas approach flow chamber dividing plates, 19 exhanst gas outlet flow room cover plates, 20. exhanst gas outlet flow chamber central dividing plates, 21. side, exhanst gas outlet flow chamber dividing plates, 22. central tubes, 23. fume side fins.
the specific embodiment
Below in conjunction with drawings and Examples, the utility model will be further described.
Should illustrate, described drawings and Examples are for the utility model is described, not for limiting scope of the present utility model.After reading the present invention, as the utility model is made various changes or modifications, all belong to change or modification of equal value, be included in equally in the scope of the application's appended claims restriction
Embodiment, boiler using steam residual-heat (referring to Fig. 1-Fig. 5)
The detailed structure of spiral plate type heat exchange core 6 can be consulted " the corrosion-resistant double axial flow spiral heat exchanger ZL200510041521.1 that a kind of heat exchange core can be taken out " outward.It is that heat exchanger plates be take to central tube 22 as axle, makes two not connected spiral roads, and one is gas flue, and another is water channel.
Spiral plate type heat exchange core 6 is placed in to the housing 7 of top end socket 10 and bottom bulkhead 2, with gas approach flow room cover plate 16, gas approach flow chamber central dividing plate 17, side, gas approach flow chamber dividing plate 18, forms airtight gas approach flow chamber, with exhanst gas outlet flow room cover plate 19, exhanst gas outlet flow chamber central dividing plate 20, side, exhanst gas outlet flow chamber dividing plate 21, forms airtight exhanst gas outlet flow chamber, makes the even cloth of flue gas in the spiral road of heat exchange core.
7 of spiral plate type heat exchange core assembly 6 and housings have an annular space, in gas approach flow chamber and place, exhanst gas outlet flow chamber, use respectively upper arcuate shrouding 14 and 5 shutoff of lower arcuate shrouding, and in the not shutoff of vapour side.So the annular space that spiral plate type heat exchange core assembly 6 and housing are 7 communicates with vapour side, pressure equates.Because fume side pressure is lower than steam side pressure, in heat exchange core, fume side is to be subject to external pressure, in heat exchange core, fume side arranges fin, and cover plate and the dividing plate of importing and exporting flow chamber are arranged to support member and gusset (not shown), to improve the stability of fume side.
During operation, soft water is filled with to ordinary water level by water filling port 15, flue gas is introduced by import 17, through gas approach flow chamber, be evenly distributed in many spiral flues of heat exchange core, the water that heat is passed in another spiral road makes its vaporization, form and contain the mobile multiphase flow of making progress of a large amount of steam bubbles therein, its severe is less than water, in central tube 22, because surface heat intensity is lower, be still single-phase-saturated mode water, and there is again cold soft water to inject, temperature is lower, severe pin is large, so it is poor that the WATER AS FLOW MEDIUM between spiral road and central tube has produced a severe, promoted that the water of central tube is downward, the water of helix core upwards flows.The flue gas of process heat exchange is by the outer row of exhanst gas outlet 4.Certainly the flow direction of flue gas is not limited to this, also can change bottom in and top out into, can suit measures to local conditions to select.
The steam producing is outer defeated by steam outlet pipe 11 through catching drop device 9.Sewage is regularly arranged outward by blowoff valve.
Useful putting really
The beneficial effects of the utility model are: will in industrial process, produce a large amount of waste heat recoveries when becoming useful steam, reduce exhaust gas temperature, reduce thermal pollution, reach energy-conservation, low-carbon (LC), environmental protection, economic multinomial compound benefit.In structure, realized with plate and having managed on behalf of another, cancelled tube sheet, price reduction material cost, reduces processing charges.Central tube plays the effect of down-comer, the circulation of fortified water in spiral plate type heat exchange core, improve overall heat-transfer coefficient, utilize the arc shrouding in top and the bottom, steam pressure is born by housing, made fume side runner in being subject to outer pressure condition, at fume side runner, fin is set again, support member is set the dividing plate of smoke entrance flow chamber and gusset is strengthened, to improve its stability.

Claims (3)

1. a novel waste heat boiler, it is by gas approach, exhanst gas outlet, gas approach flow chamber, exhanst gas outlet flow chamber, spiral plate type heat exchange core, water filling port, steam (vapor) outlet, sewage draining exit, catch drop device, liquid level meter, safety valve, housing, top end socket, bottom bulkhead forms, it is characterized in that: the housing that spiral plate shell-type heat exchange core is placed in to top end socket and bottom bulkhead, described spiral plate shell-type heat exchange core, centered by central tube, in its surrounding, be provided with helical form gas flue and helical form water channel, fin is set in gas flue, flue gas is by import flue gas flow chamber and outlet flue gas flow chamber, make flue gas even distribution in the helical form gas flue of heat exchange core.
2. novel waste heat boiler according to claim 1, is characterized in that: at gas approach flow chamber and place, exhanst gas outlet flow chamber, use respectively upper arcuate shrouding and the shutoff of lower arcuate shrouding.
3. novel waste heat boiler according to claim 1, is characterized in that: cover plate and the dividing plate of smoke entrance flow chamber arrange support member and gusset.
CN201320250389.6U 2013-05-10 2013-05-10 Novel exhaust-heat boiler Expired - Fee Related CN203454079U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320250389.6U CN203454079U (en) 2013-05-10 2013-05-10 Novel exhaust-heat boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320250389.6U CN203454079U (en) 2013-05-10 2013-05-10 Novel exhaust-heat boiler

Publications (1)

Publication Number Publication Date
CN203454079U true CN203454079U (en) 2014-02-26

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Application Number Title Priority Date Filing Date
CN201320250389.6U Expired - Fee Related CN203454079U (en) 2013-05-10 2013-05-10 Novel exhaust-heat boiler

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103256585A (en) * 2013-05-10 2013-08-21 淮安华电环保机械制造有限公司 Novel waste heat boiler
CN105509537A (en) * 2014-10-14 2016-04-20 尼普顿-班森有限责任公司 Multi-segmented tube sheet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103256585A (en) * 2013-05-10 2013-08-21 淮安华电环保机械制造有限公司 Novel waste heat boiler
CN105509537A (en) * 2014-10-14 2016-04-20 尼普顿-班森有限责任公司 Multi-segmented tube sheet

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140226

Termination date: 20150510

EXPY Termination of patent right or utility model