CN204328977U - A kind of protection type waste heat boiler - Google Patents
A kind of protection type waste heat boiler Download PDFInfo
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- CN204328977U CN204328977U CN201420727900.1U CN201420727900U CN204328977U CN 204328977 U CN204328977 U CN 204328977U CN 201420727900 U CN201420727900 U CN 201420727900U CN 204328977 U CN204328977 U CN 204328977U
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- boiler
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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
A kind of protection type waste heat boiler, comprise body of heater, be arranged on the heating surface in body of heater and boiler header, waste heat flue gas can pass the water-cooled section of furnace interior heating surface successively under the effect of smoke induced draught fan being connected to body of heater top, steam superheater section and evaporimeter section, the steam superheater section of heating surface and the below of evaporimeter section are provided with the protective plate washed away this section of heating surface for cushioning waste heat flue gas, the air distribution plate for sealing its gap is also provided with between heating surface and the internal face of body of heater, this air distribution plate is the strip angle bar that both sides are along its length separately fixed on heating surface and inboard wall of furnace body face, boiler header is provided with the wind deflector for preventing flue gas from washing away it near the side of body of heater center line.The utility model substantially increases heat exchange efficiency, and the arranging of heating surface protective plate effectively to be reduced into stove containing grog blown sands waste gas washing away burner hearth and heating surface, significantly extends the service life of boiler, reduces maintenance of equipment expense.
Description
Technical field
The utility model relates to cement plant clinkersintering technical field of waste heat utilization, specifically a kind of waste heat boiler with internal Protection function.
Background technology
The waste gas produced after cement production enterprise can adopt low temperature exhaust heat boiler to clinkersintering usually carries out further UTILIZATION OF VESIDUAL HEAT IN.Its conventional QC250/400-26-0.92/380 type waste heat boiler, rated capacity 26t/h, nominal steam temperature is 380 DEG C.Enter furnace exhaust temperature 400 DEG C, outlet exhaust temperature 87.5 DEG C.In actual production process, find that the EGT at heat boiler outlet place is for a long time at about 120 DEG C, its temperature differs larger with design load.Cause serious waste.
Found by long-term observation and maintenance: the too high main cause of waste gas outlet temperature is: enter furnace exhaust containing a certain amount of blown sand grog, and excesssive gap between furnace wall and burner hearth internal heating surface, part enters furnace exhaust and directly extracts out from arranging EP blower fan by head between furnace wall and heating surface without undergoing hot side, thus cause kiln hood EP blower fan to exert oneself increase, boiler export wind-warm syndrome is high, increase the wearing and tearing to furnace wall and superheater, evaporator two-stage heating surface, cause heat exchange efficiency to reduce.Usually, this waste heat boiler runs the phenomenon such as heating surface booster, the needs replacing of furnace wall wearing and tearing especially severe or repairing that to there will be after 3 to 5 years in various degree.
Utility model content
The technical problems to be solved in the utility model is: existing exhaust-heat boiler flue gas outlet temperature is higher, in waste heat boiler stove boiler header and heating surface erosive wear serious, heat exchange efficiency is low, and kiln hood EP blower fan is exerted oneself excessive.
The utility model is for solving the problems of the technologies described above, the technical scheme adopted is: a kind of protection type waste heat boiler, comprise body of heater, the boiler header being arranged on the heating surface in body of heater and being connected with heating surface, the bottom of described body of heater and top are respectively arranged with gas approach and exhanst gas outlet, waste heat flue gas can pass the water-cooled section of furnace interior heating surface successively under the effect of smoke induced draught fan being connected to body of heater top, steam superheater section and evaporimeter section, described boiler header is symmetrical set the furnace interior of side on an evaporator, the steam superheater section of described heating surface and the below of evaporimeter section are provided with the protective plate washed away this section of heating surface for cushioning waste heat flue gas, this protective plate by multiple evenly and the steel pipe be arranged in parallel form, the air distribution plate for sealing its gap is also provided with between described heating surface and the internal face of body of heater, this air distribution plate is the strip angle bar that both sides are along its length separately fixed on heating surface and inboard wall of furnace body face, described boiler header is provided with the wind deflector for preventing flue gas from washing away it near the side of body of heater center line, this wind deflector is inclined at the inside of body of heater, and horizontal by 45 ° of angles.
The wind deflector of described furnace interior both sides forms an inverted conical hopper shape waste heat exhaust gases passes.
Beneficial effect:
The utility model compared with prior art, the outlet wind-warm syndrome of waste heat boiler drops to present about 70 DEG C by about original 120 DEG C, reach and exceeded designing requirement, the utilization rate of evaporimeter and superheater enthalpy significantly being improved, and then substantially increases heat exchange efficiency.The arranging of heating surface protective plate effectively to be reduced into stove containing grog blown sands waste gas washing away burner hearth and heating surface, significantly extends the service life of boiler, reduces maintenance of equipment expense.Meanwhile, kiln hood evaporation capacity and generated energy significantly increase, and kiln hood EP blower fan is exerted oneself and obviously reduced, and can economize on electricity about 8%, create huge economy and social benefit under equal labour movement row condition.Be applicable to applying.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 be air distribution plate structural representation is set.
Graphical indicia: 1, body of heater, 2, boiler header, 3, gas approach, 4, exhanst gas outlet, 5, smoke induced draught fan, 6, water-cooled section, 7, steam superheater section, 8, evaporimeter section, 9, protective plate, 901, steel pipe, 10, air distribution plate, 11, wind deflector.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described:
A kind of protection type waste heat boiler, comprise body of heater 1, the boiler header 2 being arranged on the heating surface in body of heater 1 and being connected with heating surface, the bottom of described body of heater 1 and top are respectively arranged with gas approach 3 and exhanst gas outlet 4, waste heat flue gas can pass the water-cooled section 6 of the inner heating surface of body of heater 1 successively under the effect of smoke induced draught fan 5 being connected to body of heater 1 top, steam superheater section 7 and evaporimeter section 8, the body of heater 1 that described boiler header 2 is symmetrical set side is on an evaporator inner, the steam superheater section 7 of described heating surface and the below of evaporimeter section 8 are provided with the protective plate 9 washed away this section of heating surface for cushioning waste heat flue gas, this protective plate 9 by multiple evenly and the steel pipe 901 be arranged in parallel form, the air distribution plate 10 for sealing its gap is also provided with between the internal face of described heating surface and body of heater 1, this air distribution plate 10 is the strip angle bar that both sides are along its length separately fixed on heating surface and body of heater 1 internal face, described boiler header 2 is provided with the wind deflector 11 for preventing flue gas from washing away it near the side of body of heater 1 center line, this wind deflector 11 is inclined at the inside of body of heater 1, and horizontal by 45 ° of angles, the wind deflector 11 of both sides is made to form an inverted conical hopper shape waste heat exhaust gases passes.
A kind of protection type waste heat boiler of the present utility model is by experimental study wind-warm syndrome, blast on the impact of boiler capacity, analyzes waste heat boiler and installs air distribution plate additional and change operational factor to the basis of the impact of boiler is improved.Its measure mainly taked is:
1) be fixed on furnace wall to all adopting the angle bar of 50 × 5 to be made into air distribution plate between the inner heating surface of waste heat boiler burner hearth and furnace wall, leaking out of coupling part between heating surface and furnace wall is all closed.
2) at each two pieces of the steel plate that waste heat boiler burner hearth inner about two meters, boiler header top, both sides eminence installs 500 × 3000mm additional, as wind deflector, wind deflector and vertical direction are 45 ° of angles, change exhaust gas flow direction, have reached the object of protection boiler header.Because superheater, evaporimeter are wash away the most serious two-stage heating surface in waste heat boiler; respectively increase by a row DN80 steel pipe on two-stage heating surface top as protection tube; stove is made first after protection tube, to enter heating surface containing the waste gas of grog blown sands; reduce the flowing velocity of waste gas, thus reach the object of protection furnace wall and heating surface.
Not only efficiently solve dust washing away boiler header, heating surface and furnace wall by above measure, and heat exchange efficiency significantly improves, kiln hood EP blower fan is exerted oneself and is obviously reduced.The outlet wind-warm syndrome of waste heat boiler drops to present about 70 DEG C by about original 120 DEG C, and outlet wind-warm syndrome meets or exceeds designing requirement, and the thermal efficiency significantly improves.Economizer exit water temperature brings up to about 185 DEG C from original 167 DEG C, and the utilization rate of evaporimeter and superheater enthalpy significantly improves.Kiln hood EP blower fan is exerted oneself and is obviously reduced, and under equal operating mode, EP blower fan is exerted oneself and reduced about 5HZ, effectively reduces into stove containing grog blown sands waste gas washing away burner hearth and heating surface, significantly prolonged boiler service life and reduce maintenance of equipment expense.
By transformation and the contrast of actual production operational factor more than a year, average generated energy increases 200kWh; Kiln hood EP blower fan can economize on electricity about 8% under equal labour movement row condition, creates huge economy and social benefit.This technology is without the need to carrying out large technological transformation to production technology, have the advantages that technique is simple, energy consumption is low, system safety operation is without any side effects, kiln hood evaporation capacity significantly improves, generated energy significantly increases, kiln hood EP blower fan is exerted oneself and is obviously reduced, and is applicable to popularization and the application of current all new type nonaqueous cement enterprises Waste Heat Power Station homotype waste heat boiler.
Claims (2)
1. a protection type waste heat boiler, comprise body of heater (1), the boiler header (2) being arranged on the heating surface in body of heater (1) and being connected with heating surface, the bottom of described body of heater (1) and top are respectively arranged with gas approach (3) and exhanst gas outlet (4), waste heat flue gas can pass the water-cooled section (6) of body of heater (1) inner heating surface successively under the effect of smoke induced draught fan (5) being connected to body of heater (1) top, steam superheater section (7) and evaporimeter section (8), the body of heater (1) that described boiler header (2) is symmetrical set side is on an evaporator inner, it is characterized in that: the steam superheater section (7) of described heating surface and the below of evaporimeter section (8) are provided with the protective plate (9) washed away this section of heating surface for cushioning waste heat flue gas, this protective plate (9) by multiple evenly and the steel pipe be arranged in parallel (901) form, the air distribution plate (10) for sealing its gap is also provided with between the internal face of described heating surface and body of heater (1), this air distribution plate (10) is the strip angle bar that both sides are along its length separately fixed on heating surface and body of heater (1) internal face, described boiler header (2) is provided with the wind deflector (11) for preventing flue gas from washing away it near the side of body of heater (1) center line, this wind deflector (11) is inclined at the inside of body of heater (1), and horizontal by 45 ° of angles.
2. a kind of protection type waste heat boiler according to claim 1, is characterized in that: the wind deflector (11) of described body of heater (1) inner both sides forms an inverted conical hopper shape waste heat exhaust gases passes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420727900.1U CN204328977U (en) | 2014-11-28 | 2014-11-28 | A kind of protection type waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420727900.1U CN204328977U (en) | 2014-11-28 | 2014-11-28 | A kind of protection type waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204328977U true CN204328977U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420727900.1U Expired - Fee Related CN204328977U (en) | 2014-11-28 | 2014-11-28 | A kind of protection type waste heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204328977U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682222A (en) * | 2018-12-25 | 2019-04-26 | 苏州海陆重工股份有限公司 | The protection mechanism of bottom blowing waste heat boiler changeover portion |
-
2014
- 2014-11-28 CN CN201420727900.1U patent/CN204328977U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682222A (en) * | 2018-12-25 | 2019-04-26 | 苏州海陆重工股份有限公司 | The protection mechanism of bottom blowing waste heat boiler changeover portion |
| CN109682222B (en) * | 2018-12-25 | 2024-04-09 | 苏州海陆重工股份有限公司 | Protection mechanism of bottom blowing exhaust-heat boiler changeover portion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20151128 |