CN2786437Y

CN2786437Y - Smokeless boiler

Info

Publication number: CN2786437Y
Application number: CNU2005200782950U
Authority: CN
Inventors: 张印社; 李心田
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-28
Filing date: 2005-01-28
Publication date: 2006-06-07
Anticipated expiration: 2015-01-28

Abstract

The utility model relates to a smokeless boiler, which has the main technical characteristics that an annular boiler arch is fixedly arranged in an inner liner of the boiler and the inner cavity of the annular boiler arch is provided with a combustion chamber. The utility model has the advantages of simple structure, low cost and convenient operation. Because a hearth is divided into two combustion chambers by the annular boiler arch and a now combustion chamber is also formed in cavity of the annular boiler arch, gas and coal dust can carry out an opportunity for thrice combustion. Thus, the smoke gas generated by the coal is sufficiently and completely combusted. If unburned smoke gas is also provided, the unburned smoke gas can be further and sufficiently combusted in the third combustion chamber. Thus, the smoke dust can be completely and sufficiently combusted, the heat efficiency can reach more than 78 percents, and consequently, the smokeless and dustless exhaust is obtained.

Description

Less boiler

One, technical field

The utility model relates to a kind of normal-pressure boiler, specifically a kind of less boiler.

Two, background technology

China is the production of coal and uses big country that industrial coal and coal consumption of living use amount are very big.Along with the continually developing and utilizing of coal, the storage of coal in China is fewer and feweri, therefore improves and the thermal efficiency that makes full use of coal is the problem that the numerous scientific workers of China extremely press for solution.Transformation by boiler structure can make coal burn fully, improves the thermal efficiency of coal, can make the flue dust of boiler emission fewer and feweri like this, has purified air, thereby has reached the purpose of energy savings.Take anti-double-layer grate structure and the individual layer fire grate normal burning forced ventilation structure of burning of secondary, all still there is a certain amount of flue dust emission problem that exceeds standard in these two kinds coal-fired normal-pressure boilers through practice test, the former defective is the manufacturing cost height, coal adaptability difference and complicated operation, especially soot emissions are still bigger when throwing coal or putting a chimney on the stove and make the fire draw.The latter is the twice aeration that covets, and has not only reduced the phenomenon that fire box temperature but also flue dust flow process rear still have the completing combustion of failing, and smoke medicining dust-removing effect is still undesirable.Double-layer grate counter-burning type series boiler is to adopt downward burning structure mode, coal is knocked down from upper furnace door, high-temperature flue gas enters upper fire-grating downwards and burns with the combustion chamber that following casting furnace grate forms, and upwards carry out heat from two flues by stack draught and transmit, flue gas can fully burn substantially under the normal combustion state, and smoke discharge amount is fewer.Double-layer grate counter-burning type series boiler relies on the chimney gravity-flow ventilation, the chimney ability operate as normal of certain altitude must be arranged, and wind is in combustion chamber undercompounding, therefore the utilization of can not fully burning of certain flue gas is arranged, enter atmosphere, both reduced the thermal efficiency of coal, polluted atmosphere again.

Three, utility model content

The utility model is to have above defective and propose a kind of new technical scheme in order to solve existing normal-pressure boiler structural design.

The technical scheme that the designing technique defective of its existence of solving the utility model is adopted is: a kind of less boiler, it comprises furnace internal-lining, shell, water inlet, delivery port and impact tube, be provided with fire door by shell and furnace internal-lining, in furnace internal-lining, be provided with the horizontal water tube that is connected with furnace chamber, in burner hearth, be fixed with the annular furnace baking, be provided with the combustion chamber at annular furnace baking inner chamber.It is shaped as sphere in the set combustion chamber of the inner chamber of annular furnace baking.

The advantage that the utlity model has is: because the annular furnace baking is divided into two combustion chambers with burner hearth, have additional a combustion chamber again in the annular furnace baking, can make coal gas and coal dust carry out three-burn chance.The utlity model has twice aeration, one time wind makes the coal high-temperature gasification produce flue gas, secondary wind fully mixes with flue gas and burns, not clean-burning flue gas dries by the fire cavity through the high-temperature ring stove again and is furnished with secondary wind and carries out the burning second time, the abundant completing combustion of flue gas that coal is produced if also have unburned flue gas further fully to burn in the 3rd combustion chamber, can make flue dust burn cmpletely like this, the thermal efficiency can reach more than 78%, thereby reaches the smokeless and dust free discharging.

Four, description of drawings

Accompanying drawing 1 is the utility model overall structure schematic diagram;

Accompanying drawing 2 is that the A-A of the utility model accompanying drawing 1 is to the structure cross-sectional schematic.

Among the figure: the 1st, end flange, the 2nd, shell, the 3rd, total air channel, the 4th, casting furnace grate, the 5th, flue, the 6th, annular furnace baking, the 7th, horizontal water tube, the 8th, furnace chamber, the 9th, impact tube, the 10th, tertiary air road, the 11st, secondary air duct, 12 are air channels, the 13rd, air blast.

Five, the specific embodiment

Boiler is made up of furnace internal-lining (5), shell (2), water inlet, delivery port and impact tube (9), be provided with fire door by shell (2) and flue (5), bottom of furnace body and side are fixed with end flange (1), an air channel (12), secondary air duct (11), tertiary air road (10) and air blast (13), be provided with the horizontal water tube (7) that is connected with furnace chamber (8) in the furnace internal-lining (5), in shell (2) bottom, be provided with casting furnace grate (4) and total air channel (3), the middle part is fixed with annular furnace baking (6) in burner hearth, is provided with at annular furnace baking (6) inner chamber and is shaped as spherical combustion chamber.

Claims

1, a kind of less boiler, it comprises furnace internal-lining (5), shell (2), water inlet, delivery port and impact tube (9), be provided with fire door by shell (2) and furnace internal-lining (5), in furnace internal-lining (5), be provided with the horizontal water tube (7) that is connected with furnace chamber (8), in burner hearth, be fixed with annular furnace baking (6), it is characterized in that: be provided with the combustion chamber at annular furnace baking (6) inner chamber.

2, a kind of less boiler according to claim 1 is characterized in that: it is shaped as sphere in the set combustion chamber of the inner chamber of annular furnace baking (6).