CN205482395U - Oxidation exhaust -heat boiler is smelted to flue - Google Patents
Oxidation exhaust -heat boiler is smelted to flue Download PDFInfo
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- CN205482395U CN205482395U CN201620109302.7U CN201620109302U CN205482395U CN 205482395 U CN205482395 U CN 205482395U CN 201620109302 U CN201620109302 U CN 201620109302U CN 205482395 U CN205482395 U CN 205482395U
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- flue
- heat boiler
- heater
- smelted
- waste heat
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model discloses an oxidation exhaust -heat boiler is smelted to flue has solved mainly that prior art civilwork investment is big, the trouble is many, life is short, the high scheduling problem of energy consumption. This oxidation exhaust -heat boiler is smelted to flue is including the furnace body, shaft flue, flue grouping, drum, the ash bucket that have into mouth and outlet flue, the shaft flue sets up in the furnace body and lies in the into top of mouth, and the flue grouping sets up and feeds through in the furnace body and with the shaft flue, the drum sets up in the outside top of furnace body, and the ash bucket sets up in the bottom of furnace body, the flue grouping forms through three partition wall water -cooling walls partitions that set up in the furnace body including the first flue, second flue, third flue and the fourth flue that communicate in proper order, first flue, second flue, third flue and fourth flue, for empty smoke -box in the first flue, all be equipped with the heat convection nest of tubes in second flue, third flue and the fourth flue. The utility model discloses simple structure, realization convenience.
Description
Technical field
This utility model relates to a kind of waste heat boiler, specifically, relates to a kind of flue and smelts oxidation waste heat boiler.
Background technology
At present, in metallurgy industry, mineral aggregate is carried out bottom blowing oxidizing roasting, roasting produce about 950 DEG C high temperature, reach 12% containing SO2, high mine dust density (300～400g/Nm3) flue gas, enter waste heat boiler and carry out heat exchange, absorb the waste heat in flue gas, the water in boiler is converted into steam with pressure and goes generating again or as industrial steam.To remove about 75% mine dust in flue gas, flue-gas temperature is left boiler and is gone next procedure to produce sulphuric acid after being down to about 360 DEG C simultaneously.The Natural Circulation HRSG run in the market there is problems in that the high-temperature flue gas that 1. smelting bottom blowing oxidizing roasting produces is directly entered the vertical well gas flue of waste heat boiler, prevent mine dust high temperature bond, reduce vertical well gas flue outlet cigarette temperature, keep cigarette speed constant, lifting vertical well gas flue height, increase cooling chamber heating surface area, boiler whole height keeps constant, thus improve waste heat boiler concrete operating podium level, increase user's construction investment cost；2. the easy acid corrosion of low-temperature space heat convection pipe group；3. vertical well gas flue serious wear, often occurs that booster affects production.
Utility model content
The purpose of this utility model is to overcome drawbacks described above, it is provided that oxidation waste heat boiler smelted by a kind of compact conformation, the flue that realization is convenient, energy consumption is low.
To achieve these goals, this utility model is by the following technical solutions:
Oxidation waste heat boiler smelted by a kind of flue, including having the body of heater of smoke inlet and outlet flue, vertical well gas flue, flue group, drum, ash bucket；Described vertical well gas flue is arranged in described body of heater and is positioned at the top of described smoke inlet, in described flue group is arranged at described body of heater and connects with described vertical well gas flue；Described drum is arranged at the top outside described body of heater, and described ash bucket is arranged at the bottom of described body of heater；
Further, described flue group includes the first flue, the second flue, the 3rd flue and the 4th flue being sequentially communicated, and described first flue, the second flue, the 3rd flue and the 4th flue are separated by being arranged on described body of heater Nei tri-road partition wall water-cooling wall；It it is empty smoke-box in described first flue；It is equipped with heat convection pipe group in described second flue, the 3rd flue and the 4th flue；
Further, the heat convection Guan Zuyu in described 4th flue founds the connection weld bond of header and is arranged on outside stove.
Further, the heat pipe of described vertical well gas flue is provided with alloy-steel plate by fume side, and the sweep of gases windward side of described heat pipe is provided with abrasionproof part.
Further, the pitch of the heat convection pipe group in described second flue is more than the pitch of the heat convection pipe group in described 3rd flue and the 4th flue.
Further, it is provided with explosion deashing device in described second flue, the 3rd flue and the 4th flue.
Further, the cross-sectional area of described first flue and the second flue is more than described 3rd flue and the cross-sectional area of the 4th flue.
Further, described inboard wall of furnace body is provided with fin panel casing.
Further, Jun Xiang center, the bottom bending of the fin panel casing of described first flue, the second flue, the 3rd flue and the 4th flue both sides, form cone-shaped reducing.
Further, it is provided with water-cooling screen set of heat exchange tubes in described vertical well gas flue.
Further, the outside at described body of heater is additionally provided with mechanical shaking device.
Further, upper collecting chamber and lower header are also included；Described drum is connected with described partition wall water-cooling wall by described upper collecting chamber, and described lower header connects with the bottom of described partition wall water-cooling wall.
Further, being provided with the common downcomer communicated therewith on described drum, described common downcomer is connected with described fin panel casing by stove water distribution pipe.
Compared with prior art, the beneficial effects of the utility model are:
(1) this utility model uses vertical well gas flue to realize connecting of body of heater smoke inlet and outlet flue with flue group, simultaneously, heat convection pipe group is set in flue group and supporting explosion deashing device is set, water-cooling screen set of heat exchange tubes it is provided with in vertical well gas flue, fin panel casing is set in body of heater, compared with prior art, this utility model have that user's construction investment is few, compact conformation, energy consumption are relatively low, fault is few, length in service life, the advantage such as energy-conservation.
(2) in this utility model, vertical well gas flue uses heat pipe and heat smoke contact side to be provided with alloy-steel plate structure, mineral aggregate granule is stoped directly heat pipe strength to be washed away and wear and tear, or high-temperature flue gas is heated and causes more by force heat pipe burning to cause booster, thus preferably realize boiler safety, stable operation.
Accompanying drawing explanation
Fig. 1 is main sectional view of the present utility model.
Fig. 2 is this utility model sectional view.
Fig. 3 is top view of the present utility model.
Fig. 4 be in Fig. 1 A-A to sectional view.
Fig. 5 be in Fig. 1 B-B to sectional view.
Fig. 6 be in Fig. 1 C-C to sectional view.
Fig. 7 be in Fig. 1 D-D to sectional view
Fig. 8 is enlarged drawing at I in Fig. 3.
Fig. 9 is enlarged drawing at II in Fig. 3.
Wherein, title corresponding to reference: 1-vertical well gas flue, 2-body of heater, 3-water-cooling screen set of heat exchange tubes, 4-back timber, 5-suspender member, 6-column, 7-drum, 8-upper collecting chamber, 9-lower header, 10-soda pop connecting tube, 11-fin panel casing, 12-common downcomer, 13-stove water distribution pipe, 14-heat convection pipe group, 15-scraper slag removing machine, 16-ash bucket, 17-the first partition wall water-cooling wall, 18-the second partition wall water-cooling wall, 19-the 3rd partition wall water-cooling wall, 20-the first flue, 21-the second flue, 22-the 3rd flue, 23-the 4th flue, 24-smoke inlet, 25-outlet flue, 26-mechanical shaking device, 27-explosion deashing device, 28-heat pipe, 29-abrasionproof part, 30-alloy-steel plate.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.Embodiment of the present utility model includes but not limited to the following example.
Embodiment
As shown in figs 1-9, present embodiments providing a kind of flue and smelt oxidation waste heat boiler, this waste heat boiler mainly includes body of heater, vertical well gas flue, flue group, drum and ash bucket.Wherein, body of heater is main element of the present utility model, its shape is not particularly limited, those skilled in the art can determine the shape of body of heater according to the open demand of reality, body of heater be provided above back timber, one end of body of heater is provided with connected column, and three-dimensional top is connected with back timber, is additionally provided with the suspender member being connected with back timber in one end of body of heater.
The bottom of body of heater is smoke inlet, and the other end of body of heater is provided with outlet flue, is connected with flue group by vertical well gas flue between smoke inlet and outlet flue, and flue gas is discharged by outlet flue in vertical well gas flue and flue group after treatment.The present embodiment is provided with fin panel casing at inboard wall of furnace body.
Flue group is arranged at body of heater Nei tri-road partition wall water-cooling wall: first partition wall water-cooling wall the 17, second partition wall water-cooling wall the 18, the 3rd partition wall water-cooling wall 19 is separated into first flue the 20, second flue the 21, the 3rd flue the 22, the 4th flue 23 being sequentially communicated, and the first flue 20 communicates with vertical well gas flue 1；It is equipped with heat convection pipe group 14 in second flue the 21, the 3rd flue the 22, the 4th flue 23；Vertical well gas flue communicates with the first flue top, and the first flue and the second flue bottom communicate, and the second flue and the 3rd flue top communicate, and the 3rd flue and the 4th flue bottom communicate.
Wherein, the pitch of the heat convection pipe group in the second flue is more than the pitch of the heat convection pipe group in the 3rd flue and the 4th flue.By above-mentioned setting, increase heat transfer area, improve cooling effect, make boiler structure more compact.
Jun Xiang center, the bottom bending of the fin panel casing 11 of first flue the 20, second flue the 21, the 3rd flue the 22, the 4th flue 23 both sides, forms cone-shaped reducing, it is simple to ash discharge.
First flue 20 and the second flue 21 cross section are all higher than the 3rd flue 22 and the cross section of the 4th flue 23, it is possible to reduce cigarette speed, it is to avoid melted flue dust is difficult to be bonded in heat convection pipe group.
In order to prevent furnace interior dust stratification, preventing flue dust to be adhered on inboard wall of furnace body, prevent flue blockage, body of heater 2 is outside is additionally provided with mechanical shaking device 26.Second flue the 21, the 3rd flue 22 and the 4th flue 23 are equipped with explosion deashing device 27.
Water-cooling screen set of heat exchange tubes is set in vertical well gas flue, flue gas heat transfer type is mainly radiant heat transfer, fraction convection heat transfer' heat-transfer by convection, flue dust along fin panel casing flowing has the sufficiently long time to be cooled, lose the strong cementability of flue dust high temperature, guarantee the unimpeded of the first flue and the second flue, it is also impossible to tie bulk slag and blocking channel, in the first flue and the second flue, the V-shaped flowing of flue gas stream, flue dust has downward centrifugal action, and fall into the ash bucket of bottom, play dustproof function, the ash quantity entering back into the 3rd flue and the 4th flue is few, molten flue dust is difficult to be bonded in heat convection pipe group, reduce flue blockage, there is fault few, the advantage that service life is longer.
In order to preferably realize this utility model, described water-cooling screen set of heat exchange tubes is two-sided being heated.The most greatly add heat transfer area, thus increase heat-transfer effect and be difficult to bonding, reduce vertical well gas flue height, reduce boiler steel consumption；In order to prevent mineral aggregate granule from heat pipe 28 strength erosive wear is caused booster, heat pipe 28 sweep of gases windward side is provided with abrasionproof part 29.
In order to preferably realize boiler safety, stable operation, described vertical well gas flue 1 uses heat pipe 28 and heat smoke contact side to be provided with alloy-steel plate 30 structure, mineral aggregate granule is stoped directly heat pipe 28 strength to be washed away and wear and tear, or high-temperature flue gas is heated and causes more by force heat pipe 28 burning to cause booster, such as Fig. 8, heat smoke transfers heat to heat pipe 28 by alloy-steel plate 30, for more preferable cooled alloy steel plate 30, the more conventional fin panel casing of heat pipe 28 spacing is little, does not thus have heat pipe 28 booster phenomenon and affects whole system and produce.The mounting means of alloy-steel plate can be welded to heat pipe tube wall; it can also be to be arranged on, by connector, the tube wall that is heated; those skilled in the art are on the premise of knowing the function of alloy-steel plate; position relationship interior between alloy-steel plate and heat pipe, connected mode reasonably can be selected, its protection domain that should also be as belonging to the application.
Drum is arranged on the top of body of heater, and drum is connected with upper collecting chamber by soda pop connecting tube, and upper collecting chamber connects with described partition wall water-cooling wall, and lower header connects with the bottom of partition wall water-cooling wall.Being provided with the common downcomer communicated therewith on drum, common downcomer is connected with fin panel casing by stove water distribution pipe.
In order to realize preferably processing flue dust, described ash bucket 16 is five, and wherein four are arranged at bottom the first flue 20 and the second flue 21, and another is arranged at bottom the 3rd flue 22 and the 4th flue 23.By five ash buckets, it is possible to respectively flue dust is processed, a relatively conventional ash bucket, better.Setting scraper slag removing machine 15 below ash bucket 16, the lime-ash discharging boiler is input to next to operation.
When using this utility model, flue gas flows in flue, i.e. flue gas imports hard well stack base, flue gas is in flowing up at a high speed, surrounding is fin panel casing, centre is water-cooling screen set of heat exchange tubes, absorb hyperthermia radiation heat in flue gas, input gas temperature about 950 DEG C, outlet cigarette temperature about 650 DEG C, flue gas flow rate about 6m/s, the most bonding molten flue dust is made to have little time to be bonded on fin panel casing and be i.e. blown away, even if being stained with some on a small quantity, but reach a certain amount of after, owing to in-furnace temperature is higher, it is in molten bulky grain to fall into downwards in smelting furnace, so remain the unimpeded of flue；Hard well flue and the first flue intersection, flow area becomes suddenly big, cigarette speed bust, cigarette temperature bust therewith, the little granule of cementability difference is formed on the flue dust surface making molten after chilling, again because of flue suddenly change big cavity, ash-laden gas wander about as a refugee fin panel casing farther out, make flue dust not bonding at fin panel casing and crash in ash bucket；First flue is big cavity, and the second flue is disposed with array heat convection pipe group of having loose bowels, and flue gas heat transfer type is mainly radiant heat transfer, flue dust along fin panel casing flowing promotes strong viscosity because cooling down, guarantee that the first flue and the second flue are unimpeded, in the first flue and the second flue, the V-shaped flowing of flue gas stream, dust has downward centrifugal action, and fall in ash bucket, and playing dustproof function, in the first flue and the second flue, flue gas flow rate is relatively low, all at below 2m/s, it is simple to dedusting；Second flue gas control of export is below 500 DEG C, enter back in the 3rd flue, fume amount is less, flue gas flow area is less, average flue gas flow rate, at about 4m/s, the V-shaped stream of flue gas stream, enters back into the 4th flue, flue-gas temperature is finally down to about 360 DEG C, is discharged into next process from exhanst gas outlet；In order to prevent flue dust to be bonded in fin panel casing, heat convection pipe group, put mechanical shaking device at film-type water-cooling fireplace peripheral hardware, in the second flue, the 3rd flue and the 4th flue, be provided with explosion deashing device；In 4th flue, heat convection pipe group is connected with vertical header outside bowing out stove, ensure that junction weld bond is external, preventing angle welding low-temperature-acid-corrosion heat convection limb weld seam from causing booster because of low-temperature-acid-corrosion, if occurring in stove, heat convection pipe booster blocks more convenient outside stove；In heat transfer process, the flue dust of molten is difficult to be bonded in fin panel casing, heat convection pipe group, even if there being a small amount of flue dust bonding, can pass through mechanical shaking device and explosion deashing device, it is ensured that flue is unimpeded, has fault few, service life length advantage.
According to above-described embodiment, this utility model just can be realized well.What deserves to be explained is; on the premise of above-mentioned design principle; for solving same technical problem; even if some made on architecture basics disclosed in the utility model are without substantial change or polishing; the essence of the technical scheme used is still as this utility model, therefore it should also be as in protection domain of the present utility model.
Claims (10)
1. an oxidation waste heat boiler smelted by flue, including having the body of heater (2) of smoke inlet (24) and outlet flue (25), vertical well gas flue (1), flue group, drum (7), ash bucket (16), vertical header；Described vertical well gas flue (1) is arranged in described body of heater (2) and is positioned at the top of described smoke inlet (24), in described flue group is arranged at described body of heater (2) and connects with described vertical well gas flue (1)；Described drum (7) is arranged at the top that described body of heater (2) is outside, and described ash bucket (16) is arranged at the bottom of described body of heater (2)；The heat pipe (28) of described vertical well gas flue (1) is provided with alloy-steel plate (30) by fume side so that heat is transferred to described heat pipe (28) by alloy-steel plate and stops mineral grain directly to wash away described heat pipe (28)；Water-cooling screen set of heat exchange tubes (3) it is provided with in described vertical well gas flue (1)；
Described flue group includes the first flue (20), the second flue (21), the 3rd flue (22) and the 4th flue (23) being sequentially communicated, and described first flue (20), the second flue (21), the 3rd flue (22) and the 4th flue (23) are separated by being arranged on described body of heater (2) Nei tri-road partition wall water-cooling wall；It it is empty smoke-box in described first flue (20)；It is equipped with heat convection pipe group (14) in described second flue (21), the 3rd flue (22) and the 4th flue (23).
Oxidation waste heat boiler smelted by flue the most according to claim 1, it is characterised in that the sweep of gases windward side of described heat pipe (28) is provided with abrasionproof part (29)；Described body of heater (2) inwall is provided with fin panel casing (11).
Oxidation waste heat boiler smelted by flue the most according to claim 2, it is characterised in that be additionally provided with mechanical shaking device (26) in the outside of described body of heater (2).
Oxidation waste heat boiler smelted by flue the most according to claim 3, it is characterised in that be provided with explosion deashing device (27) in described second flue (21), the 3rd flue (22) and the 4th flue (23).
5. smelt oxidation waste heat boiler according to the flue described in any one of claim 1-4, it is characterized in that, the pitch of heat convection pipe group (14) in described second flue (21) is more than the pitch of heat convection pipe group (14) in described 3rd flue (22) and the 4th flue (23).
6. smelt oxidation waste heat boiler according to the flue described in any one of claim 1-4, it is characterised in that heat convection pipe group (14) in described 4th flue (23) is arranged on outside stove with the connection weld bond of vertical header.
7. smelt oxidation waste heat boiler according to the flue described in any one of claim 2-4, it is characterised in that the cross-sectional area of described first flue (20) and the second flue (21) is more than described 3rd flue (22) and the cross-sectional area of the 4th flue (23).
Oxidation waste heat boiler smelted by flue the most according to claim 7, it is characterized in that, Jun Xiang center, the bottom bending of the fin panel casing (11) of described first flue (20), the second flue (21), the 3rd flue (22) and the 4th flue (23) both sides, forms cone-shaped reducing.
Oxidation waste heat boiler smelted by flue the most according to claim 1, it is characterised in that also include upper collecting chamber (8) and lower header (9)；Described drum (7) is connected with described partition wall water-cooling wall by described upper collecting chamber (8), and described lower header (9) connects with the bottom of described partition wall water-cooling wall.
Oxidation waste heat boiler smelted by flue the most according to claim 7, it is characterized in that, being provided with the common downcomer (12) communicated therewith on described drum (7), described common downcomer (12) is connected with described fin panel casing (11) by stove water distribution pipe (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620109302.7U CN205482395U (en) | 2016-02-03 | 2016-02-03 | Oxidation exhaust -heat boiler is smelted to flue |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620109302.7U CN205482395U (en) | 2016-02-03 | 2016-02-03 | Oxidation exhaust -heat boiler is smelted to flue |
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| CN205482395U true CN205482395U (en) | 2016-08-17 |
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| CN201620109302.7U Active CN205482395U (en) | 2016-02-03 | 2016-02-03 | Oxidation exhaust -heat boiler is smelted to flue |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777505A (en) * | 2022-04-15 | 2022-07-22 | 湖南长宏锅炉科技股份有限公司 | Three-chamber rare earth recovery waste heat furnace |
-
2016
- 2016-02-03 CN CN201620109302.7U patent/CN205482395U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777505A (en) * | 2022-04-15 | 2022-07-22 | 湖南长宏锅炉科技股份有限公司 | Three-chamber rare earth recovery waste heat furnace |
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