CN2233508Y

CN2233508Y - Vertical boiler with steam dust-removing device

Info

Publication number: CN2233508Y
Application number: CN 95220188
Authority: CN
Inventors: 黄瑞峰
Original assignee: TIANJIN RAILWAY BOILER PLANT
Current assignee: TIANJIN RAILWAY BOILER PLANT
Priority date: 1995-08-29
Filing date: 1995-08-29
Publication date: 1996-08-21
Anticipated expiration: 2005-08-29

Abstract

The utility model relates to a structure of a vertical boiler with a steam dust-removing device. Two layers of cold water boiler arches which are formed by the mutual connection of finned tubes are arranged in a hearth on the lower part of a transversal water tube bundle, and the two layers of cold water boiler arches are supported by a boiler cavity. The tube shaft line of the boiler arch at the upper layer respectively presents 90 DEG with the transversal water tube bundle and the tube shaft line of the boiler arch at the lower layer, and both sides of each boiler arch has interval with the boiler cavity. Steam nozzles which are communicated with steam pipelines are fixed on the upper parts of both sides of the boiler arch at the lower layer. The utility model causes steam and hot flue gas to be mixed fully, and the flow time of the hot flue gas in the boiler cavity is prolonged. Thus, the utility model has the obvious advantages of quick temperature and pressure rise and less coal consumption; the discharge concentration of the smoke dust is low, and the average value of the actual measurement is 140 mg / m < 3 >; the heat efficiency can achieve 72%.

Description

Vertical boiler with steam dust arrester

The utility model belongs to vertical boiler, relates to a kind of steam dedusting structure of vertical boiler.

The existing technical measures of utilizing steam to improve the dust discharge situation of vertical boiler are that the steam nozzle is set directly in the burner hearth, and by the combustion-supporting purpose that reaches dedusting, its weak point is that dust removing effects is not good enough.

The purpose of this utility model provides the new construction of a kind of vertical boiler steam dedusting, with the effect of obvious raising vertical boiler steam dedusting.

Above-mentioned purpose is realized by following technical scheme:

In the burner hearth of transverse water pipe bundle bottom, be provided with the two-layer cold water chimney arch that is interconnected to constitute by extended surface tube of flue supporting, the tubular axis line of upper strata chimney arch is 90 ° of angles with the tubular axis line of transverse water pipe bundle and lower floor's chimney arch respectively, be equipped with between each chimney arch both sides and the flue at interval, be fixed with the steam nozzle that communicates with vapor line on the top of lower floor chimney arch both sides.

The steam pipe that draw at the boiler end top divides two-way to enter burner hearth and nozzle joins from shoot door through stop valve and three-way connection;

Each extended surface tube is equipped with the cleaning hand hole.

Further specify the utility model with drawings and Examples below.

Accompanying drawing 1, vertical boiler steam dedusting structure generalized section;

Accompanying drawing 2, steam are introduced structural representation;

Accompanying drawing 3, steam nozzle location schematic diagram.

Description of drawings:

Steam nozzle 1, lower floor's chimney arch 2, flue 3, upper strata chimney arch 4, transverse water pipe bundle 5, vapor line 6, stop valve 7, three-way connection 8, shoot door 9, hand hole 10, nozzle holder 11.

Accompanying drawings the utility model operation principle: the hot flue gas of burner hearth stops down at lower floor's chimney arch (2), force it to rise from lower floor chimney arch both sides, place two symmetrically arranged steam nozzles (1) of this position, steam is mixed with hot flue gas, its combustion-aided dust-removing effect is more existing directly to place the structure of burner hearth to significantly improve at the steam nozzle, the hot flue gas that continues to rise meets stopping of a layer chimney arch (4) again, can only turn to the interval between this layer chimney arch and the flue (3) to continue to rise, afterwards, meet stopping of four rows staggered transverse water pipe bundle (5) again, force the flue gas rotation once more, laterally wash away transverse water pipe bundle, visible the utility model is extended the flow process of hot flue gas, has increased its clean-burning time, not only help heat exchange, more help the smoke abatement depositing dust.

Two-layer chimney arch adopts each extended surface tube of steel construction to be equipped with hand hole (10) device, be convenient to check and clean fouling, vapor line (6) divides two-way to introduce burner hearth from shoot door (9) bead groove through stop valve (7) and three-way connection (8) and is connected with steam nozzle (1), it is simple in structure, be convenient to maintenance, nozzle is fixing by the support that is welded on lower floor's chimney arch (11).

It is low to the utlity model has smoke dust discharge concentration, and actual measurement mean value is 140mg/m³, increasing temperature and pressure is fast, and the consumption coal is few, and the thermal efficiency reaches 72% remarkable advantage.

Claims

1, the vertical boiler that has the steam dust arrester, formed by shell body, flue, transverse water pipe bundle, impact tube, manhole, fire door, shoot door, water inlet, water, gas outlet, it is characterized in that: in the burner hearth of transverse water pipe bundle bottom, be provided with the two-layer cold water chimney arch that is interconnected to constitute by extended surface tube of flue supporting, the tubular axis line of upper strata chimney arch is 90 ° of angles with the tubular axis line of transverse water pipe bundle and lower floor's chimney arch respectively, be equipped with between two-layer chimney arch both sides and the flue at interval, be fixed with the steam nozzle on the top of lower floor chimney arch both sides.

2, vertical boiler as claimed in claim 1 is characterized in that: the steam pipe that draw at the boiler end top divides two-way to enter burner hearth and nozzle joins from shoot door through stop valve and three-way connection.

3, vertical boiler as claimed in claim 1 is characterized in that: each extended surface tube is equipped with the cleaning hand hole.