CN202747321U - Small dual-layer fixing grate firing boiler - Google Patents
Small dual-layer fixing grate firing boiler Download PDFInfo
- Publication number
- CN202747321U CN202747321U CN 201220376415 CN201220376415U CN202747321U CN 202747321 U CN202747321 U CN 202747321U CN 201220376415 CN201220376415 CN 201220376415 CN 201220376415 U CN201220376415 U CN 201220376415U CN 202747321 U CN202747321 U CN 202747321U
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- water cooling
- grate
- water
- drum
- hearth
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Abstract
The utility model discloses a small dual-layer fixing grate firing boiler and belongs to the boiler industry. The defects that in the prior art, traditional coal-fired industrial boilers and kilns are outdated in structure, low in heat efficiency, high in pollution and insufficient for effective control devices are solved. The boiler mainly comprises a hearth, wherein the hearth is provided with a fuel inlet, a slag outlet, an ash cleaning port and a fume outlet, a burning system and a water cooling system are arranged in the hearth, an ash falling device is arranged at the bottom of the hearth, the burning system comprises a fixing grate and a water cooling grate, the fixing grate is installed on the lower portion of the water cooling grate, the water cooling system comprises a side water cooling wall, a rear water cooling wall and a steam drum, a convection bank is arranged in the steam drum, the steam drum is installed on the upper portion of the hearth, the side water cooling wall and the rear water cooling wall are connected to the steam drum through the pipe bundle, and the water cooling grate and the steam drum are connected through a container. The boiler is mainly used for burning of coal.
Description
Technical field
The utility model belongs to the Industrial Boiler field, specifically, relates in particular to a kind of small size double-layer fixed grate burning boiler.
Background technology
Be subjected to the restriction of fossil energy, coal accounts for China's total output of primary energy 75%, accounts for total quantity consumed 70%.Prediction shows, coming few decades, the leading role of coal in production of energy and consumption structure can not change, and the environmental problem that simultaneously coal production and utilization cause also can become increasingly conspicuous.China's coal-burned industrial boiler, kiln surpass 20% of consumption of coal total amount with coal, and coal-burned industrial boiler, furnace construction fall behind, and the thermal efficiency is low, pollute heavy, lack effective control device, the actual average thermal efficiency is 60% ~ 65%, part even only have 30% ~ 40%.Proposition along with country's " energy-saving and emission-reduction " rigid index, the Industrial Boiler of high energy consumption, kiln become the transformation object that Government and enterprise is paid close attention to, and how real Industrial Boiler, the reduction of kiln energy consumption, the raising of energy utilization efficiency also become the key issue of sustainable survival and development.
The utility model content
In order to solve traditional coal-burned industrial boiler in the prior art, furnace construction backwardness, the thermal efficiency is low, pollutes to weigh, and lacks the defective of effective control device, and the utility model provides a kind of small size double-layer fixed grate burning boiler.
The utility model is achieved through the following technical solutions:
A kind of small size double-layer fixed grate burning boiler comprises burner hearth, and burner hearth is provided with fuel inlet, slag outlet, cleaning door and exhanst gas outlet; Be provided with combustion system, water-cooling system in the burner hearth, burner hearth bottom is provided with ash dropped unit; Combustion system comprises fixed grate and water-cooled grate, and fixed grate is installed in the below of water-cooled grate; Water-cooling system comprises side wall, rear water-cooling wall, drum, is provided with convection bank in the drum; Described drum is installed in upper furnace, side wall be connected water-cooling wall by the tube bank be connected with drum, water-cooled grate is connected with drum by header.
Compared with prior art, the beneficial effects of the utility model are:
Adopt the double-layer grate burning structure of fixed grate and water-cooled grate, make fuel combustion more abundant, the water-cooled grate on top prevents that water-cooled grate is burned when strengthening the heat exchange raising thermal efficiency;
The flue gas that fuel combustion produces through water-cooled grate, side wall, convection bank and after after the water-cooling wall four part heat exchange, the heat in the flue gas is fully absorbed, greatly improved the thermal efficiency of the present utility model.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In the drawings, 1, drum; 2, convection bank; 3, water-cooled grate; 4, fuel inlet; 5, slag outlet; 6, cleaning door; 7, fixed grate; 8, ash dropped unit; 9, side wall; 10, rear water-cooling wall; 11, exhanst gas outlet; 12, furnace wall.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
A kind of small size double-layer fixed grate burning boiler comprises burner hearth, and burner hearth is provided with fuel inlet 4, slag outlet 5, cleaning door 6 and exhanst gas outlet 11; Be provided with combustion system, water-cooling system in the burner hearth, burner hearth bottom is provided with ash dropped unit 8; Combustion system comprises fixed grate 7 and water-cooled grate 3, and fixed grate 7 is installed in the below of water-cooled grate 3; Water-cooling system comprises side wall 9, rear water-cooling wall 10, drum 1, is provided with convection bank 2 in the drum 1; Described drum 1 is installed in upper furnace, side wall 9 be connected water-cooling wall 10 and be connected with drum 1 by tube bank, water-cooled grate 3 is connected with drum 1 by header.
The utility model connects each pipeline in use, and the furnace wall 12 in the burner hearth plays insulation effect.During work, the water-cooled grate 3 that fuel is sent in the burner hearth by fuel inlet 4 burns, at this moment, water-cooled grate 3 absorption portion heats and with heat transferred drum 1, the fixed grate 7 that the inadequate little briquette fuel that burns falls into the bottom continues to burn, the flue gas that fuel combustion produces enters convection bank 2 in the drum 1 by side wall 9, discharges through exhanst gas outlet 11 by rear water-cooling wall 10 at last; In this process, flue gas carries out heat exchange with side wall 9, convection bank 2 and rear water-cooling wall 10 respectively, and the heat in the flue gas is fully absorbed, thereby has greatly improved the thermal efficiency of the present utility model.
In the fuel combustion process, dust falls into burner hearth bottom by ash dropped unit 8, and burning produces a large amount of slags and dust is cleared up by slag outlet 5 and cleaning door 6 respectively.
Claims (1)
1. a small size double-layer fixed grate burning boiler comprises burner hearth, and burner hearth is provided with fuel inlet (4), slag outlet (5), cleaning door (6) and exhanst gas outlet (11); It is characterized in that: be provided with combustion system, water-cooling system in the burner hearth, burner hearth bottom is provided with ash dropped unit (8); Combustion system comprises fixed grate (7) and water-cooled grate (3), and fixed grate (7) is installed in the below of water-cooled grate (3); Water-cooling system comprises side wall (9), rear water-cooling wall (10), drum (1), is provided with convection bank (2) in the drum (1); Described drum (1) is installed in upper furnace, side wall (9) be connected water-cooling wall (10) by the tube bank be connected with drum (1), water-cooled grate (3) is connected with drum (1) by header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220376415 CN202747321U (en) | 2012-07-31 | 2012-07-31 | Small dual-layer fixing grate firing boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220376415 CN202747321U (en) | 2012-07-31 | 2012-07-31 | Small dual-layer fixing grate firing boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202747321U true CN202747321U (en) | 2013-02-20 |
Family
ID=47706711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220376415 Expired - Fee Related CN202747321U (en) | 2012-07-31 | 2012-07-31 | Small dual-layer fixing grate firing boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202747321U (en) |
-
2012
- 2012-07-31 CN CN 201220376415 patent/CN202747321U/en not_active Expired - Fee Related
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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: 20130220 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |