CN2286281Y

CN2286281Y - Vertical double-chamber combustion coal staggered water-tube boiler

Info

Publication number: CN2286281Y
Application number: CN 97215167
Authority: CN
Inventors: 田同德; 秦昭起; 李青山; 肖振明
Original assignee: WENJIAO BOILER FACTORY CHANGCHUN CITY
Current assignee: WENJIAO BOILER FACTORY CHANGCHUN CITY
Priority date: 1997-04-29
Filing date: 1997-04-29
Publication date: 1998-07-15
Anticipated expiration: 2007-04-29

Abstract

The utility model discloses a vertical double-chamber combustion coal staggered water-pipe furnace, which is provided with an internal furnace. A radiation arch is arranged along the midposition of the height of a furnace chamber. The lower part of the radiation arch forms an arch shape and the middle part of the radiation arch is provided with a central hole. The furnace chamber is divided into an upper combustion chamber and a lower combustion chamber. The lower combustion chamber is composed of a fire grate, the lower part of a furnace liner and the radiation arch. Four heating secondary air pipes are arranged in the middle of the lower combustion chamber. Spiral flame is formed by the secondary air and the flue gas, and the fuel is uniformly mixed, strongly disturbed, and completely combusted. The upper combustion chamber is transversally provided with more than two rows of interlaced water pipes and is also provided with a smoke baffle plate and a dust removal plate. Thereby, the fullness of the flue gas is favorable, and smoke falls on the radiation arch and is combusted again. The utility model has the advantages of compact structure, high thermal efficiency, and wide developing foreground.

Description

Vertical twin chamber combustion coal staggered water-tube boiler

The utility model relates to a kind of civilian industry boiler, particularly relates to a kind of vertical twin chamber combustion coal staggered water-tube boiler.

Domestic what now moved is the vertical water tube boiler of fuel with the coal, still uses bulk coal, is not equipped with secondary wind, does not also install chimney arch, by flue and tube bank heat exchange, flue gas flow is short, and it is big to leak coal, cause the exhaust gas temperature height, heat loss is big, and dust exhausting concentration is up to 400mg/Nm ³, oke exhaust blackness is up to Lin Geman 2-3 level, and serious environment pollution surpasses the environmental protection restriction, and water mobile inequality of being heated in parallel pipe, and the part in-tube fouling is serious, and the inconvenience cleaning causes water pipe to break, and influences service life.

At above-mentioned situation, the purpose of this utility model is to provide a kind of so vertical twin chamber combustion coal staggered water-tube boiler, fire the chamber down and accept the spiral flame that the effect of rotation secondary hot-air produces down, make to mix, combustion intensification has strengthened the heat transfer to flue, radiation and convection heat transfer' heat-transfer by convection are continued to accept in last combustion chamber, fully absorb flue gas heat, reduced exhaust gas temperature and dust exhausting concentration, improved the thermal efficiency of boiler.

For achieving the above object, the utility model has been taked following technical measures: most external is a furnace outside-lining, interior is furnace internal-lining, the bottom is a fixed grate, the radiation arch is housed along the middle part of furnace height burner hearth is divided into two combustion chambers up and down, encircle by radiation, furnace internal-lining bottom and fire grate constitute combustion chamber down, four secondary air channels are housed in it, the outlet of secondary wind is loaded on the oblique perforate ejection in secondary air channel top secondary wind, make down the combustion chamber form spiral flame, flue heating surface is carried out high temperature heat transfer, there is staggered water pipe more than two rows last combustion chamber along the height lateral arrangement, between the water pipe of close furnace internal-lining and the furnace internal-lining half moon smoke barrier is housed respectively along highly staggered water pipe second row and topmost row second from the bottom, stops the short circuit of rising flue gas, strengthen disturbance, enhancing is to the radiation of last combustion chamber heating surface and the heat transfer of convection current, flue dust drops on and accepts heat radiation on the radiation arch and rekindle under staggered water pipe and smoke barrier effect, and flue gas discharges out of the furnace afterwards.

Major advantage of the present utility model

1, burning briquette, its volume size is even, not only reduces the leakage coal but also reach even ventilation;

2, adopt arch radiation arch, help reflect heat, the secondary wind of ejection has been heated and has formed spiral flame, and combustion chamber combustion intensification is mixed, and the temperature height burns fully, strengthened heat transfer;

3, fire the chamber on and be furnished with the above staggered water pipe of two rows, be furnished with smoke barrier, to the washing away and disturbance of staggered water pipe, strengthen the convection current of top heating surface and the heat transfer of radiation when strengthening flue gas and upwards flowing, the flue dust that keeps off rekindles;

4, integral arrangement compact and reasonable, heat is fully transmitted, and exhaust gas temperature is low, thermal efficiency height

The utility model is described in further detail below in conjunction with drawings and Examples.

Figure is the vertical twin chamber of a utility model combustion coal staggered water-tube boiler cutaway view.

As shown in the figure: the shell of boiler is a furnace outside-lining 13, interior is furnace internal-lining 12, radiation arch 6 is housed along the middle part of furnace height, burner hearth is divided into combustion chamber 3 and last combustion chamber 9 down, fire the fixed grate 2 of chamber 3 down by the bottom, furnace internal-lining 12 bottoms and bottom are arch, the centre has 6 compositions of radiation arch of centre bore 7, in inner bag (12), four secondary air channels 4 are housed apart from center line is uniform around equidistant, secondary wind outlet 5 is equipped with on the top of airduct 4, make the secondary wind of ejection and the flame-shaped curl of rising, the strong degree of filling that burns is good, dedusting plate 8 is equipped with in the position, middle and lower part of last combustion chamber 9, and leave logical cigarette gap 14 between the radiation arch 6, along the above staggered water pipe 11 of two rows highly laterally is housed, with several second rows in its underpart, between the top row's second from the bottom water pipe 11 and the inwall of furnace internal-lining 12 half moon smoke barrier 10 is housed respectively, prevent that flue gas is in the place's short circuit of furnace internal-lining wall, thereby strengthen flue gas washing away and disturbance to water pipe, increase is to the radiation of heating surface and the heat exchange of convection current, the dirt slag that dedusting plate 8 both can force the flue gas of rising to carry returns down the combustion chamber and rekindles, the flame that can force rising again upwards flows around mesopore 14 outflows of dedusting plate and radiation arch are full of again.Air channel 1 also is equipped with in the bottom.

The utility model is compared with old-fashioned vertical water tube boiler, and important breakthrough is arranged on the structure, adopts the arch spoke Penetrate arch, the Secondary Air outlet can form spiral flame and Combustion of Mould Coal etc. with flue gas, and lower combustion chamber heat is concentrated, The temperature height, mix disturbance and strongly conduct heat. Flue gas enters the combustion chamber, has adopted dedusting plate and has kept out the wind Plate makes the heat of flue gas fully pass to heating surface with radiation and convection type, and exhaust gas temperature is low, the thermal efficiency Height, the total compact and reasonable.

Claims

A kind of vertical twin chamber combustion coal staggered water-tube boiler, mainly by flue, water pipe, the fire grate parts are formed, it is characterized in that: the shell of boiler is furnace outside-lining (13), interior is furnace internal-lining (12), it is arch that the bottom is housed along the middle part of furnace height, the radiation arch (6) that the centre has centre bore (7) is divided into combustion chamber (3) and last combustion chamber (9) down with burner hearth, under to fire chamber (3) be fixed grate (2) by the bottom, the bottom of furnace internal-lining (12) and radiation arch (6) are formed, in inner bag (12) apart from center line equidistant around uniform four secondary air channels (4) that are equipped with, airduct (4) top has secondary wind outlet (5), dedusting anti-(8) is equipped with in the middle and lower part of last combustion chamber (9), and leave logical cigarette gap (14) between the radiation arch (6), along the above staggered water pipe (11) of two rows highly laterally is housed, between the inwall of several second rows and top row's second from the bottom water pipe (11) and furnace internal-lining (12) under the height half moon smoke barrier (10) is housed respectively, boiler bottom is equipped with air channel (1).