CN204739576U - Reheat pulverized coal boiler - Google Patents
Reheat pulverized coal boiler Download PDFInfo
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- CN204739576U CN204739576U CN201520422382.7U CN201520422382U CN204739576U CN 204739576 U CN204739576 U CN 204739576U CN 201520422382 U CN201520422382 U CN 201520422382U CN 204739576 U CN204739576 U CN 204739576U
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- pulverized
- reheating
- fired boiler
- coal fired
- burner
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Abstract
The utility model relates to a high temperature superhigh pressure boiler technical field specifically is a reheat pulverized coal boiler, reduces oxynitrides's emission when it satisfies the requirement of high temperature superhigh pressure, reaches the environmental protection standard, and it includes the burner hearth, be provided with the combustor on the burner hearth, the burner hearth communicates uptake shaft, horizontal gas pass and exhaust pass in proper order, a serial communication port, the combustor includes follows the supreme some fire bed of arranging in proper order, overgrate air import, a wind import, COFA wind spout, SOFA wind spout down, be provided with movable vane in the COFA wind spout, the air -out direction of SOFA wind spout becomes certain angle with the tangent line of main burner's the circle of contact.
Description
Technical field
The utility model relates to superhigh-pressure high-temp boiler technology field, is specially a kind of reheating pulverized-coal fired boiler.
Background technology
Boiler is the equipment often used in industrial production, reheating pulverized-coal fired boiler is a kind of is core with coal dust firing, by the complete boiler technology system of the technological maheup such as coal dust acceptance, deposit, conveying, burning and igniting, boiler heat exchange, gas cleaning, automatic control, along with to equipment requirement to improve constantly maximization boiler applications more and more extensive, for the boiler of picture 220t/h superhigh-pressure high-temp, for the layout of burner, and for emission request with very high, existing equipment does not generally all reach environmental requirement.
Summary of the invention
In order to solve the problem, the utility model provides a kind of reheating pulverized-coal fired boiler, reduces the discharge of oxynitrides, reach environmental protection standard while it meets the requirement of superhigh-pressure high-temp.
Its technical scheme is such: a kind of reheating pulverized-coal fired boiler, it comprises burner hearth, described burner hearth is provided with burner, described burner hearth is communicated with uptake flue, horizontal flue and exhaust pass successively, it is characterized in that, described burner comprise arrange successively from bottom to up ignition layer, secondary air inlet, First air import, COFA wind snout, SOFA wind snout, be provided with moving vane in described COFA wind snout, the tangent line of the described air-out direction of SOFA wind snout and the circle of contact of main burner is angled.
It is further characterized in that, described ignition layer is provided with oven gas lighting-up tuyere;
Described moving vane pendulum angle≤15 °;
The described air-out direction of SOFA wind snout and the circle of contact of main burner tangent line become the angle of 12 °;
Heating surface is provided with in described uptake flue, high temperature superheater and high temperature reheater is provided with in described horizontal flue, described exhaust pass comprises two passages, is provided with in low-temperature reheater, passage described in another and is provided with low temperature superheater in a described passage;
Described low-temperature reheater and described low temperature superheater lower end are respectively arranged with gas baffle;
The reheated steam inlet pipeline of described low-temperature reheater is provided with emergency spray attemperator and corresponding shower nozzle;
The outlet conduit of described low-temperature reheater is separately installed with micro-direct-contact desuperheater and corresponding shower nozzle with on the inlet pipeline of described high temperature reheater.
After adopting structure of the present utility model, adopt the combination of COFA wind snout and SOFA wind snout, ensure that entering boiler body after the ash of gasification furnace mixes with coal dust carries out Thorough combustion, reduces the discharge of oxynitrides, reaches environmental protection standard while meeting the requirement of superhigh-pressure high-temp.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is SOFA wind snout horizontal cross-section schematic diagram.
Detailed description of the invention
See Fig. 1, shown in Fig. 2, a kind of reheating pulverized-coal fired boiler, it comprises burner hearth 1, burner hearth is provided with burner, burner hearth 1 is communicated with uptake flue 2 successively, horizontal flue 3 and exhaust pass 4, burner comprises the ignition layer 5 arranged successively from bottom to up, secondary air inlet 6, First air import 7, COFA wind snout 8, SOFA wind snout 9, moving vane is provided with in COFA wind snout 8, can up and down and swing, moving vane pendulum angle≤15 °, the air-out direction of SOFA wind snout 9 and the circle of contact of main burner tangent line become into the angle of 12 °, namely the θ in Fig. 2, boiler body burner is entered after the ash of gasification furnace mixes with coal dust, the mass ratio using gasification ashes can reach 41.2%.
The air capacity taken due to oven gas is larger, so igniting air port have employed the form be separated with lower overfiren air port, ignition layer is provided with separately oven gas lighting-up tuyere, because oven gas Air Quantity Required when lighting a fire is larger, account for 18% of total blast volume ratio, if oven gas lighting-up tuyere and lower overfiren air port are shared, Secondary Air is then descended to account for the ratio of total blast volume too large, make all the other overfire air ports by calm available, when being unfavorable for normally running one, the proportioning of Secondary Air, now oven gas igniting is arranged separately a spout, when lighting a fire, this spout standard-sized sheet can be ensured the needs of oven gas igniting air distribution, when normally running, this igniting spout is stopped transport, only logical cooling air cools, one of main burner can be guaranteed, the proportioning of Secondary Air, all be in optimum state when ensureing igniting and normal operation simultaneously.
Be provided with heating surface 11 in uptake flue 2, be provided with high temperature superheater 12 and high temperature reheater 13 in horizontal flue 3, exhaust pass 4 comprises two passages, is provided with in low-temperature reheater 15, another passage and is provided with low temperature superheater 16 in a passage; Low-temperature reheater 15 and low temperature superheater 16 lower end are respectively arranged with gas baffle 17, and pattern is a point partitioned compartment type, and gas baffle 17 is arranged in cigarette temperature about 370 DEG C of regions, and the action of gas baffle 17 is connected by connecting rod and executing agency and operates; The reheated steam inlet pipeline 18 of low-temperature reheater 15 is provided with emergency spray attemperator and corresponding shower nozzle, as accident emergency spray use, to protect reheater; Reheated steam temperature adjustment is adjusted to master with gas baffle 17, and watering temperature adjustment is auxiliary adjustment means.
The outlet conduit of low-temperature reheater 15 is separately installed with micro-direct-contact desuperheater 14 and corresponding shower nozzle with on the inlet pipeline of high temperature reheater 13, controls the vapor (steam) temperature deviation entering high temperature reheater 13 both sides.
Claims (8)
1. a reheating pulverized-coal fired boiler, it comprises burner hearth, described burner hearth is provided with burner, described burner hearth is communicated with uptake flue, horizontal flue and exhaust pass successively, it is characterized in that, described burner comprise arrange successively from bottom to up ignition layer, secondary air inlet, First air import, COFA wind snout, SOFA wind snout, be provided with moving vane in described COFA wind snout, the tangent line of the described air-out direction of SOFA wind snout and the circle of contact of main burner is angled.
2. a kind of reheating pulverized-coal fired boiler according to claim 1, it is characterized in that, described ignition layer is provided with oven gas lighting-up tuyere.
3. a kind of reheating pulverized-coal fired boiler according to claim 1, is characterized in that, described moving vane pendulum angle≤15 °.
4. a kind of reheating pulverized-coal fired boiler according to claim 1, is characterized in that, the described air-out direction of SOFA wind snout and the circle of contact of main burner tangent line become the angle of 12 °.
5. a kind of reheating pulverized-coal fired boiler according to claim 1, it is characterized in that, heating surface is provided with in described uptake flue, high temperature superheater and high temperature reheater is provided with in described horizontal flue, described exhaust pass comprises two passages, is provided with in low-temperature reheater, passage described in another and is provided with low temperature superheater in a described passage.
6. a kind of reheating pulverized-coal fired boiler according to claim 5, is characterized in that, described low-temperature reheater and described low temperature superheater lower end are respectively arranged with gas baffle.
7. a kind of reheating pulverized-coal fired boiler according to claim 5, is characterized in that, the reheated steam inlet pipeline of described low-temperature reheater is provided with emergency spray attemperator and corresponding shower nozzle.
8. a kind of reheating pulverized-coal fired boiler according to claim 5, is characterized in that, the outlet conduit of described low-temperature reheater is separately installed with micro-direct-contact desuperheater and corresponding shower nozzle with on the inlet pipeline of described high temperature reheater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520422382.7U CN204739576U (en) | 2015-06-18 | 2015-06-18 | Reheat pulverized coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520422382.7U CN204739576U (en) | 2015-06-18 | 2015-06-18 | Reheat pulverized coal boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204739576U true CN204739576U (en) | 2015-11-04 |
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ID=54421309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520422382.7U Expired - Fee Related CN204739576U (en) | 2015-06-18 | 2015-06-18 | Reheat pulverized coal boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204739576U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485667A (en) * | 2015-06-18 | 2016-04-13 | 无锡华光锅炉股份有限公司 | Pulverized coal reheating boiler |
| CN107559804A (en) * | 2017-09-19 | 2018-01-09 | 深圳市能源环保有限公司 | A kind of garbage burning boiler superheater system |
| CN108036298A (en) * | 2017-12-21 | 2018-05-15 | 深圳市能源环保有限公司 | A kind of garbage burning boiler steam reheat system |
| WO2019119384A1 (en) * | 2017-12-21 | 2019-06-27 | 深圳市能源环保有限公司 | Steam reheating system for rubbish incineration furnace |
-
2015
- 2015-06-18 CN CN201520422382.7U patent/CN204739576U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485667A (en) * | 2015-06-18 | 2016-04-13 | 无锡华光锅炉股份有限公司 | Pulverized coal reheating boiler |
| CN105485667B (en) * | 2015-06-18 | 2019-01-01 | 无锡华光锅炉股份有限公司 | A kind of reheating pulverized-coal fired boiler |
| CN107559804A (en) * | 2017-09-19 | 2018-01-09 | 深圳市能源环保有限公司 | A kind of garbage burning boiler superheater system |
| CN108036298A (en) * | 2017-12-21 | 2018-05-15 | 深圳市能源环保有限公司 | A kind of garbage burning boiler steam reheat system |
| WO2019119384A1 (en) * | 2017-12-21 | 2019-06-27 | 深圳市能源环保有限公司 | Steam reheating system for rubbish incineration furnace |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20200618 |