CN210951841U9 - Novel circulating fluidized bed hot water boiler - Google Patents
Novel circulating fluidized bed hot water boiler Download PDFInfo
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- CN210951841U9 CN210951841U9 CN201921271980.3U CN201921271980U CN210951841U9 CN 210951841 U9 CN210951841 U9 CN 210951841U9 CN 201921271980 U CN201921271980 U CN 201921271980U CN 210951841 U9 CN210951841 U9 CN 210951841U9
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Abstract
The utility model discloses a novel circulating fluidized bed hot water boiler, which comprises a hearth arranged on a boiler body and a water-cooled wall, the inner wall of the hearth is vertically provided with a water-cooled wall, the water-cooled wall comprises a front water-cooled wall, a rear water-cooled wall and a side water-cooled wall, the side wall of the bottom end of the hearth is provided with a coal feeding device, the top end of the hearth is connected with a front upper water header, a side upper water header and a rear upper water header through pipelines, the collection case upper end is equipped with the connecting pipe on the side water, connecting pipe and boiler barrel fixed connection, the utility model discloses simple structure, convenient to use, the furnace body is vertical arranges, and the bottom is provided with feeder, and the burning furnace export is provided with high temperature separator, can ensure that the heat is by abundant absorption of water and utilization, is equipped with the elastic expansion festival between Ù shape feed back valve and the combustion chamber, and it absorbs the displacement that arouses by the temperature, the effectual reliable work of feed back valve of having protected.
Description
Technical Field
The utility model belongs to the technical field of boiler equipment, especially, relate to a novel circulating fluidized bed boiler.
Background
The circulation multiplying power of the existing circulating fluidized bed is generally higher by about 40 times, the flow speed of flue gas is generally 6-8 m/s, and the temperature of the flue gas at the inlet of a cyclone separator is generally controlled to be about 850 ℃. The boiler has the common defects of low combustion efficiency, serious abrasion, short continuous and stable operation time, possible coking of a circulating ash system, poor boiler regulation performance, long start-up time and the like. The low combustion efficiency and the serious abrasion are two problems which are difficult to solve by the circulating fluidized bed boiler and are the most critical factors influencing the performance of the boiler.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to prior art's defect, provide a medium temperature separation circulating fluidized bed boiler that combustion efficiency is high, wearing and tearing are little, dependable performance, energy-concerving and environment-protective.
A novel circulating fluidized bed hot water boiler comprises a hearth and a water-cooled wall, wherein the hearth is arranged on a boiler body, the water-cooled wall is vertically arranged on the inner wall of the hearth and comprises a front water-cooled wall, a rear water-cooled wall and a side water-cooled wall, a coal feeding device is arranged on the side wall of the bottom end of the hearth, the top end of the hearth is connected with a front upper water collecting box, a side upper water collecting box and a rear upper water collecting box through pipelines, a connecting pipe is arranged at the upper end of the side upper water collecting box and fixedly connected with a boiler barrel, the boiler barrel is connected with the hearth through the connecting pipe, the upper end of the hearth is communicated with a separating device, the bottom end of the separating device is connected with a material returning device, the left side of the material returning device is communicated with a combustion chamber through the bottom end of the hearth, the lower end of the combustion chamber is sequentially provided with an air distribution plate, a front wall lower collecting box, a side water collecting box, the boiler comprises a boiler body, a front wall lower header and a rear wall lower header, wherein the front wall lower header and the rear wall lower header are respectively connected with a front water-cooled wall and a rear water-cooled wall, the right end of the boiler body is sequentially provided with a superheater, an economizer, a material returning device and an air preheater from top to bottom, the economizer is connected with a hearth through the material returning device, the superheater is communicated with the economizer, and a flue gas outlet is communicated with the bottom end of the hearth through the air preheater.
The superheater is self-supporting and is supported by a plurality of rows of tubes, working medium flows in the tubes, overheating damage is avoided, and the operation is safe and reliable.
The material returning device is provided with an Ù -shaped material returning valve, and the Ù -shaped material returning valve is an elastic expansion joint arranged between a self-balancing valve and the combustion chamber.
The air preheater is a high-temperature secondary air preheater.
Has the advantages that: the utility model discloses simple structure, convenient to use, the furnace body is vertical arranges, and the bottom is provided with feeder, and the burning furnace export is provided with high temperature separator, can ensure that the heat is by abundant absorption and utilization of water, is equipped with the elastic expansion festival between Ù shape feed back valve and the combustion chamber, and it absorbs the displacement that arouses by the temperature, the effectual reliable work of feed back valve that has protected.
Drawings
Fig. 1 is a schematic structural view of a novel circulating fluidized bed hot water boiler of the present invention.
Fig. 2 is a schematic structural diagram of the novel circulating fluidized bed hot water boiler material returning device.
Fig. 3 is a diagram showing the structure of a novel circulating fluidized bed hot water boiler superheater of the present invention.
The boiler comprises a boiler body 1, a hearth 2, a combustion chamber 3, a coal feeder 4, a connecting pipe 5, a hanging device 6, a side water collecting tank 7, a side water collecting tank 8, a front water collecting tank 9, a rear water wall 10, a side water cooling wall 11, a front water cooling wall 12, a secondary air pipe 13, a side water collecting tank 13, a front wall lower collecting tank 14, an air distribution plate 15, a rear water collecting tank 16, a rear water collecting tank 17, a rear water collecting tank 19, a boiler barrel 20, a superheater 21, a separator 22, an economizer 23, a material returning device 24, an air preheater 24, a flue gas outlet 26- Ù -shaped material returning valve 25 and an elastic expansion joint 27.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1, a novel circulating fluidized bed hot water boiler comprises a hearth 2 and a water-cooled wall which are arranged on a boiler body, wherein the water-cooled wall is vertically arranged on the inner wall of the hearth 2 and comprises a front water-cooled wall 11, a rear water-cooled wall 9 and a side water-cooled wall 10, a coal feeding device 4 is arranged on the side wall at the bottom end of the hearth 2, the top end of the hearth is connected with a front water upper header 8, a side water upper header 13 and a rear water upper header 16 through pipelines, a connecting pipe 5 is arranged at the upper end of the side water upper header 7, the connecting pipe 5 is fixedly connected with a boiler barrel 19, the boiler barrel 19 is connected with the hearth 2 through the connecting pipe 5, a separating device 21 is communicated with the upper end of the hearth 2, a material returning device 23 is connected with the bottom end of the separating device 21, the left side of the material returning device 23 is communicated with a combustion chamber 3 through, The boiler comprises a front wall lower header 14, a side water lower header 13 and a rear water header 16, wherein the side water header 13 and an air distribution plate 15 are fixedly connected to the bottom end of a combustion chamber 3 and communicated with a side water-cooled wall 10, the front wall lower header 14 and the rear water header 16 are respectively connected with a front water-cooled wall 11 and a rear water-cooled wall 9, the right end of a boiler body 1 is sequentially provided with a superheater 20, an economizer 22, a material returning device 23 and an air preheater 24 from top to bottom, the economizer 22 is connected with a hearth 2 through the material returning device 23, the superheater 20 is communicated with the economizer 22, and a flue gas outlet 25 is communicated with the bottom end of the hearth 2 through the air preheater 24.
The superheater 20 is self-supporting and is supported by a plurality of rows of tubes, working medium flows in the tubes, overheating damage is avoided, and the operation is safe and reliable.
The material returning device 23 is provided with an Ù -shaped material returning valve 26, the Ù -shaped material returning valve 26 is an elastic expansion joint 27 arranged between a self-balancing valve and the combustion chamber 3, the elastic expansion joint absorbs displacement caused by temperature, the reliable work of the material returning valve is effectively protected, and the Ù -shaped material returning valve 26 is a self-balancing valve, namely, the outflow quantity is automatically adjusted according to the inflow quantity, so that the Ù -shaped valve is simple to operate and reliable in operation.
The air preheater 24 is a high-temperature secondary air preheater, so that carbon ions which are not burnt out in the boiling section can be quickly burnt out, the combustion efficiency is improved, the blackness of flue gas is reduced, and the environment protection is facilitated.
Claims (4)
1. A novel circulating fluidized bed hot water boiler is characterized in that: the coal-feeding boiler comprises a hearth and a water-cooling wall, wherein the hearth is arranged on a boiler body, the water-cooling wall is vertically arranged on the inner wall of the hearth, the water-cooling wall comprises a front water-cooling wall, a rear water-cooling wall and a side water-cooling wall, a coal feeding device is arranged on the side wall of the bottom end of the hearth, the top end of the hearth is connected with a front upper water collecting box, a side upper water collecting box and a rear upper water collecting box through pipelines, a connecting pipe is arranged at the upper end of the side upper collecting box and is fixedly connected with a boiler barrel, the boiler barrel is connected with the hearth through the connecting pipe, the upper end of the hearth is communicated with a separating device, the bottom end of the separating device is connected with a material returning device, the left side of the material returning device is communicated with a combustion chamber through the bottom end of the hearth, an air distribution plate, a front wall lower collecting box, a side water collecting box and a, the boiler comprises a boiler body, a front wall lower header and a rear wall lower header, wherein the front wall lower header and the rear wall lower header are respectively connected with a front water-cooled wall and a rear water-cooled wall, the right end of the boiler body is sequentially provided with a superheater, an economizer, a material returning device and an air preheater from top to bottom, the economizer is connected with a hearth through the material returning device, the superheater is communicated with the economizer, and a smoke outlet of the boiler body is communicated with the bottom end of the hearth through the air preheater.
2. The novel circulating fluidized bed hot water boiler according to claim 1, wherein: the material returning device is provided with an Ù -shaped material returning valve, and the Ù -shaped material returning valve is an elastic expansion joint arranged between a self-balancing valve and the combustion chamber.
3. The novel circulating fluidized bed hot water boiler according to claim 1, wherein: the air preheater is a high-temperature secondary air preheater.
4. The novel circulating fluidized bed hot water boiler according to claim 1, wherein: the superheater 20 is self-supporting and is supported by a plurality of rows of tubes, and working medium flows in the tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921271980.3U CN210951841U9 (en) | 2019-08-07 | 2019-08-07 | Novel circulating fluidized bed hot water boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921271980.3U CN210951841U9 (en) | 2019-08-07 | 2019-08-07 | Novel circulating fluidized bed hot water boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN210951841U CN210951841U (en) | 2020-07-07 |
| CN210951841U9 true CN210951841U9 (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921271980.3U Active CN210951841U9 (en) | 2019-08-07 | 2019-08-07 | Novel circulating fluidized bed hot water boiler |
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| Country | Link |
|---|---|
| CN (1) | CN210951841U9 (en) |
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2019
- 2019-08-07 CN CN201921271980.3U patent/CN210951841U9/en active Active
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| CN210951841U (en) | 2020-07-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CU01 | Correction of utility model patent |
Correction item: Claims Correct: Text submitted on July 6, 2020 False: Text submitted on 24 may 2020 Number: 28-01 Page: ?? Volume: 36 |
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| CU01 | Correction of utility model patent |