CN201110540Y

CN201110540Y - Double-boiler barrel internally fired boiler

Info

Publication number: CN201110540Y
Application number: CNU2007200454014U
Authority: CN
Inventors: 徐智明; 陈士和; 李静; 汪养芬; 杨英春
Original assignee: ANHUI DAMING BOILER CO LTD
Current assignee: Anhui Bright Thermal Equipment Co., Ltd.
Priority date: 2007-08-22
Filing date: 2007-08-22
Publication date: 2008-09-03
Anticipated expiration: 2017-08-22

Abstract

A double drum internal combustion boiler is characterized in that a front drum is a coal burning region, a mixing combustion region and a slag chamber from top to bottom in turn, an air inlet is arranged on the top portion of the front drum, the upper portion of a water-cooling grate in the front drum is the coal burning region, and the lower portion is the mixing combustion region, a back drum which is parallel with the front drum is provided, the two drums are communicated through an aditus laryngis which is located on the mixing combustion region, and a chimney is arranged on the top portion of the back drum. On one hand, smoke with large amount of heat which is generated in the mixing combustion region of the front drum enters the back drum, and is conducted with full heat exchange through the back drum, as the boiler arranges the two drums parallel, thereby largely reducing the smoke temperature and increasing heat efficiency, on the other hand, the arrangement of the back drum makes a great amount of dust in the smoke settle in the back drum, thereby greatly reducing the dust content in smoke and reducing environment pollution.

Description

Double barrels internally fired boiler

Technical field:

The utility model relates to a kind of heating equipment, relates in particular to a kind of double barrels internally fired boiler.

Background technology:

At present, small scall coal-fired boiler still is widely used, need the collective place of heat supply in a small amount such as hotel, hotel, publilc baths etc., still, mainly there are two big drawbacks in such boiler, one, this type of boiler can emit pollutants such as a large amount of black smokes, dust in the course of the work, and main cause is that the burner hearth of small scall coal-fired boiler is little, and fire box temperature is low, flame time of staying in burner hearth is short, causes in reasons such as the burner hearth internal combustion are insufficient because of the oxygen supply deficiency causes coal.Its two, this type of boiler efficiency is low, causes the very big wasting of resources, main cause is that the heat exchanger time and the distance of small scall coal-fired boiler is all very short, heat exchange is insufficient, also contains a large amount of heat energy in the flue dust of discharge.

The utility model content:

For overcoming the defective of prior art, the utility model aims to provide not only free from environmental pollution but also can reduce the novel small scall coal-fired boiler of the wasting of resources to greatest extent.

The technical scheme that the utility model technical solution problem is adopted is:

Design feature of the present utility model is:

Preceding drum is followed successively by coal-fired district, mixed combustion district and slag chamber from top to bottom, the top of drum before air inlet places, and the top of preceding drum water-cooling fire grate is coal-fired the district, the below is the mixed combustion district;

A back drum arranged side by side with preceding drum is set, and preceding drum is communicated with by the aditus laryngis that is positioned at the mixed combustion district between the drum with the back, and chimney is arranged on the top of drum afterwards.

Design feature of the present utility model also is:

The secondary wind inlet is set in the mixed combustion district.

The tertiary air import is set in the slag chamber.

The multiple spot air distribution device is set on air inlet, and the multiple spot air distribution device is being communicated with secondary wind inlet and tertiary air import respectively.

The horizontal circulating water pipe of several arrangements straggly is set in the drum of back.

Circulating water pipe tilts to place, and the horizontal tilt angle is 5-10 °.

The inwall in mixed combustion district is set to the wall with refractory lining, refracto that exotic material is made.

Compared with prior art, the beneficial effects of the utility model are embodied in:

1, two drums of the utility model are set up in parallel, on the one hand, the indoor flue gas that contains a large amount of heats that produces of preceding drum mixed combustion by aditus laryngis enter the back drum, again through after drum carry out sufficient heat exchange, thereby greatly reduce exhaust gas temperature, improved the thermal efficiency; On the other hand, the setting of back drum also makes dusts a large amount of in the flue gas be able to sedimentation in the drum of back, greatly reduces the dust content in the flue gas, reduces environmental pollution.

2, the utility model can carry out air distribution respectively for fire coal district, mixed combustion district and slag chamber by the multiple spot air distribution device is set, and has improved coal-fired sufficient combustion degree greatly, further improves thermal effect, energy savings.

3, the utility model is provided with wall with refractory lining, refracto by the inwall in the mixed combustion district, can further improve the coal-fired temperature in mixed combustion district, strengthens utilization rate of coal.

4, the utility model is by being provided with circulating water pipe in the back in the drum, and circulating water pipe is tilted to place, and can effectively improve the circulation rate of water, improves rate of heat exchange, and then improves heat exchanger effectiveness.

Description of drawings:

Fig. 1 is the utility model internal structure schematic diagram.

Fig. 2 is the utility model plan structure schematic diagram.

Number in the figure: 1 air inlet, 2 preceding drums, 3 firing doors, 4 wall with refractory lining, refracto, 5 water-cooled grates, 6 secondary wind inlets, 7 multiple spot air distribution devices, 8 mixed combustion districts, 9 tertiary air imports, slag chambers 10,

fallout chambers

11,12 aditus laryngis, 13 circulating water pipes, 14 back drums, 15 chimneys, 16 coal-fired districts.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

The specific embodiment:

Referring to Fig. 1, Fig. 2, preceding drum 2 is followed successively by coal-fired district 16, mixed combustion district 8 and slag chamber 10 from top to bottom, the top of drum 2 before air inlet 1 places, and the top of preceding drum 2 water-cooling fire grates 5 is coal-fired district 16, the below is mixed combustion district 8.

Referring to Fig. 1, Fig. 2, the back drum 14 arranged side by side with preceding drum 2 is set, be connected by the aditus laryngis 12 that is positioned at mixed combustion district 8 between preceding drum 2 and the back drum 14, chimney 15 is arranged on the top of drum 14 afterwards.

Relative set in concrete the enforcement also comprises:

For mixed combustion district 8 interior coal gas and coal dust are burnt more fully, secondary wind inlet 6 is set in mixed combustion district 8; Not have the cinder of completing combustion to be fully burned in the slag chamber 10 on a small quantity in order making, tertiary air import 9 to be set in slag chamber 10.Concrete enforcement is that multiple spot air distribution device 7 is set on air inlet 1, and multiple spot air distribution device 7 is being communicated with secondary wind inlet 6 and tertiary air import 9 respectively.

To be subjected to hot water more effectively to carry out thermal cycle in order making, the horizontal circulating water pipe 13 of several arrangements straggly is set, and circulating water pipe 13 to be provided with by 5-10 ° of level inclination in the drum 14 of back.

The bottom of back drum 14 is provided with fallout chamber 11, is used for being collected in the lime-ash that back drum 14 is able to sedimentation, and the sedimentation of lime-ash in the drum 14 of back reduced the content that discharges dust in the flue gas, alleviates environmental pollution.

During enforcement, the fire coal district 16 that coal is sent into water-cooled grate 5 tops from firing door 3 makes it burning, air inlet 1 air-supply by preceding drum 2 tops, the coal gas that wind-force produces during with coal dust and coal combustion is sent into the mixed combustion district 8 of water-cooled grate below, carry out oxygenating by secondary wind inlet 6 and make it abundant burning, because mixed combustion district 8 inwalls are provided with high temperature resistant and heat insulation wall with refractory lining, refracto 4, improved the flue-gas temperature in the mixed combustion district 8 greatly, the high-temperature flue gas that burning produces enters back drum 14 by aditus laryngis 12, and the contained heat of flue gas is discharged in the top chimney 15 of back drum 14 be able to sufficient heat exchange in the drum 14 of back after.Be provided with tertiary air import 9 in the slag chamber 10 of preceding boiler drum bottom, a small amount of imperfect combustion slag can burn totally at this, and the generation high-temperature flue gas enters the back drum by aditus laryngis 12.The circulating water pipe 13 that is provided with in the back drum can not only absorb the heat in the flue gas, and can stop the small amount of dust that contains in the flue gas, cooled dust falls into the fallout chamber 11 of back boiler drum bottom, makes final flue gas can be better than the discharge standard of national requirements when discharging chimney.

Claims

1, a kind of double barrels internally fired boiler is characterized in that:

Preceding drum (2) is followed successively by coal-fired (16), mixed combustion district (8) and slag chamber (10) distinguished from top to bottom, and air inlet (1) places the top of preceding drum (2), and the top of preceding drum water-cooling fire grate (5) is coal-fired district (16), and the below is mixed combustion district (8);

A back drum (14) arranged side by side with preceding drum (2) is set, is communicated with by the aditus laryngis (12) that is positioned at the mixed combustion district between drum (2) and back drum (14) before described, chimney (15) is arranged on the top of described back drum (14).

2, double barrels internally fired boiler according to claim 1 is characterized in that being provided with secondary wind inlet (6) in described mixed combustion district (8).

3, double barrels internally fired boiler according to claim 1, its feature is being that tertiary air import (9) is set in described slag chamber (10).

4, according to claim 1,2 or 3 described double barrels internally fired boilers, it is characterized in that on described air inlet (1), being provided with multiple spot air distribution device (7), described multiple spot air distribution device (7) is being communicated with secondary wind inlet (6) and tertiary air import (9) respectively.

5, double barrels internally fired boiler according to claim 1 is characterized in that being provided with the horizontal circulating water pipe (13) of several arrangements straggly in described back drum (14).

6, double barrels internally fired boiler according to claim 5 is characterized in that described circulating water pipe (13) tilts to place, and the horizontal tilt angle is 5-10 °.

7, double barrels internally fired boiler according to claim 1 is characterized in that the inwall in described mixed combustion district (8) is set to the wall with refractory lining, refracto (4) that exotic material is made.