CN2639730Y - Group inclined pipe secondary hot air smoke eliminating device - Google Patents

Abstract

The utility model relates to a secondary hot air smoke-eliminating device for inclined tube groups, which is characterized in that a secondary air duct is arranged at the upper end of the furnace grate inside the boiler casing, while a primary air duct is arranged at the lower end; an air inlet part is connected with a fan; tens of uniformly-spaced inclined jet pipes are arranged on the inner peripheral wall of the boiler casing. The utility model has the advantages of simple structure and reasonable design; coal dusts and harmful gases are suspended due to the respective air supply through secondary ducts and jet pipes inside the boiler casing, thus coal dusts and harmful gases are fully combusted due to the residence time prolongation under the function of inclined steam flows; due to the full combustion, the boiler coal consumption of the furnace is 17% lower than prior boiler coal consumption, and the thermal efficiency is improved by 21%.

Description

Group's inclined tube secondary hot-air smoke consuming apparatus

Affiliated technical field

The utility model relates to boiler combustion device, the definite population inclined tube secondary hot-air smoke consuming apparatus of saying so.

Background technology

Patent Office of State Intellectual Property Office in June 13 calendar year 2001 disclosed " the vertical secondary hot-air device for abatement of smoke and dust of multitube " its principal character be to be to mix the combustion chamber from top to bottom successively, secondary air chamber, heat-insulation layer, a plurality of constant warm tubes pass heat-insulation layer from the heat-insulation layer below and the mixed combustion of secondary air chamber arrival chamber interior constant warm tube sidewall has secondary air hole, and there is the cross split-flow baffles inside under the constant warm tube.Install the miniature boiler of multitube secondary hot-air device for abatement of smoke and dust additional, oke exhaust blackness is less than 1 grade of Lin Geman, and smoke dust discharge concentration is less than 120mg/m3; Meet national standard fully.By the flue gas second-time burning, improved the thermal efficiency of boiler.With compare with capacity boiler of the same type, efficient improves 15%, economizes on coal 10%.Yet although this device is avoided central burner, the float coal dirt time of staying is short, and the float coal dust quantity is bigger, and smoke effect is not good.

Summary of the invention

The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, provides a kind of simple in structure, reasonable in design, easy to operate, group's inclined tube secondary hot-air smoke consuming apparatus that smoke medicining dust-removing effect is good.

In order to achieve the above object, the technical solution adopted in the utility model is: the grate upper/lower terminal is respectively equipped with secondary air duct and air inlet position, the air channel boiler shell internal perisporium equal intervals that links to each other with blower fan and is evenly equipped with tens of inclination jet pipes in boiler shell.

The utility model has the advantages that:

1, simple in structure, reasonable in design.

2, this device is because the employing secondary air duct is blown respectively and the interior jet pipe of boiler shell makes flue coal dust and pernicious gas, and under oblique steam flow effect, when coal dust and pernicious gas stopped in burner hearth, prolongation was more fully burnt it.

3, this device sufficient combustion makes the existing boiler coal consumption of thermal efficiency ratio of burner hearth reduce by 17%, and the thermal efficiency improves 21%.

Description of drawings

Fig. 1 is the utility model structural representation;

The specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

As shown in Figure 1, the utility model is that grate 5 upper/lower terminals are respectively equipped with secondary air duct 2 and 3 air inlet positions, the air channel boiler shell 6 internal perisporium equal intervals that link to each other with blower fan 1 and are evenly equipped with tens of inclination jet pipes 7 in boiler shell 6.

Described below grate 5 air channel 3 end be provided with the deflector 4 of inclination.

The utility model is work like this:

Giving its underpart that is characterized as of burning vertical boiler below 1 ton/hour is that combustion cell is located on the grate.One time wind is blown into combustion cell through grate, this moment combustion cell float coal dirt and do not have clean-burning CO gas to be suspended on the combustion cell because the time of staying is short, and enter atmosphere with natural air inducing power.Set up secondary air duct in the burner hearth inboard this moment, is covered with some inclination jet pipes on it, when stoking main air intake turned down, secondary air register is opened, increase combustion cell top oxygen content, flue coal dust and carbon monoxide are fully burnt, to realize eliminating the purpose of black smoke.

Claims (2)

1. a population inclined tube secondary hot-air smoke consuming apparatus, comprise boiler shell, grate, it is characterized in that: grate (5) upper/lower terminal is respectively equipped with secondary air duct (2) and air inlet position, an air channel (3) boiler shell (6) the internal perisporium equal intervals that links to each other with blower fan (1) and is evenly equipped with tens of inclination jet pipes (7) in boiler shell (6).

2. according to described group of inclined tube secondary hot-airs of claim 1 smoke consuming apparatus, it is characterized in that: the deflector (4) that is provided with inclination at an air channel (3), grate (5) below end.

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