CN2240106Y - Water gas after-combustion coal economizer for boilers - Google Patents

Abstract

The utility model relates to a coal saving device for the afterburning of the water gas of boilers, belonging to a coal saving device. The utility model is used by being arranged on boiler grates. The utility model is composed of a burner and a steam generator. The utility model is characterized in that a combustion chamber is a hollow mixed air chamber which is formed by sheathing an outer air sleeve and an inner frame. The upper part of the inner frame is provided with mixed air holes. The steam generator comprises a tubular water hose which is arranged on the back upper part of the combustion chamber and is placed horizontally, a steam inlet pipe connecting with the combustion chamber and a water inlet pipe connecting with a water tank. The utility model which improves hearth temperature, enables combustible matters to combust repeatedly and reduces air pollution obviously has the advantage of energy saving. The utility model is suitable for boilers with fixed grates and movable grates.

Description

Boiler water coal gas resume combustion economizer

The utility model belongs to coal-saving device, relates to a kind of economizer that uses on the fire grate of various big, medium small boiler that is installed in, and makes the burning at high temperature respectively of coal and water-gas, makes the combustible burning cmpletely.It is a kind of novel high-efficient coal-saving device of using on production and the boiler for domestic.

At present, existing boiler is not all installed coal-saving device mostly, and stove hall temperature is low, and it is insufficient to burn, and wastes energy.As Chinese patent 9220337.5 " vertical boiler air-supply arrangement ", be to utilize pipeline air-supply, its shortcoming be the coal bulk storage on fire grate, can't improve the temperature of stove hall, it is still incomplete to burn, the shortcoming that still has air pollution and waste energy.

The purpose of this utility model provides a kind of installing and using above boiler grate, both can improve stove hall temperature, can make the combustible in the gaseous mixture repeat burning again, thereby reach energy-conservation minimizing air-polluting boiler water coal gas resume combustion economizer.This economizer can be installed on the boiler of fixed grate, also can be installed on the boiler of moving grate to use.

The utility model boiler water coal gas resume combustion economizer is made up of burner and steam generator, it is characterized in that: the n shape exogenous wind cover of burner is sleeved on the outside of n shape inside casing, with the mixed air vessel that upper periphery and two front side edge sealing cover the hollow that forms lower ending openings, n shape inside casing surrounds the combustion chamber.The top of n shape inside casing has the mixing pore.The steam generator comprises tubular water band that is contained in back upper place, combustion chamber horizontal positioned and the steam air inlet pipe and the water inlet pipe that is connected water tank that connects the burner back upper place.The mixed air vessel of n shape burner rear side, its lower end closed and on move.On the tubular water band heat absorbing sheet is housed.

This economizer can be directly installed on the boiler of fixed grate and use, also can merge and use with two n shape burners, make air enter mixed air vessel from the opening part of burner lower end, the steam that produces in the water band enters mixed air vessel by air admission hole, and two kinds of gases mix the back and enter the combustion chamber from mixing pore.Water inlet pipe sees through boiler jacket and is communicated with the water tank of outside.Water in the water pipe is by the water in the valve subsidiary water tank fully, and unnecessary water flows out from overflow pipe, the water retention level of the water of water tank top and water band top.This economizer is installed on the moving grate and uses, and the both sides of burner are installed on the bellows of the outer boiler foundation of fire grate, and mixed air vessel's lower end closed of combustion chamber rear side is also upwards moved.

The utility model with the advantage of technology comparison now is: when combustible burns, changed original burning condition, as original, whole fire grate is not piled coal, and flame disperses, and stove hall temperature is low; Filled with water coal gas economizer on former fire grate now, the combustion chamber produces high temperature, and high-temperature gas mixture and coal are burnt jointly, fire combustion is concentrated and effectively towards burning boiler, temperature difference increases, and quickens heat transmission, can reach economize on coal (30-50%), reduce air pollution about 50%.

The utility model is provided by the following drawings and embodiment.

Fig. 1 is an overall structure view of the present utility model.

This boiler water coal gas coal-saving device is respectively cast iron (or thick iron plate) and makes and cooperate devices such as water tank, pipeline.Economizer exogenous wind cover (1) is that n shape and edge sealing lid (14) are cast as one, and is enclosed within inside casing (2) and is the outside of n shape, connects with screw (15), forms mixed air vessel (16) and combustion chamber (17).3 faces of inside casing (2) are drilled with resume combustion mixing pore (13), and the position in hole constitutes coal-burning device (18) on the top of inside casing (2).The back upper place of burner jacket (1) is drilled with two air admission holes (12).

A tubular water band (8) that has heat absorbing sheet (9) is adorned in the back upper place of burner.The length of water band equates that with the wide of burner diameter is about 10cm, and an end of water band is connected into water inlet pipe (3), and the other end and water tank (5) are communicated with, the height of water tank (5) and water band (8) level, and water tank (5) top is to be equipped with water pipe (6) and valve (7).The other end of water band (8) top and steam pipe (10) welding, steam pipe (10) is told two air inlet pipe (11), air inlet pipe (11) is communicated with air admission hole (12), and and mixed air vessel (16) connection, formed " boiler resume combustion water-gas coal-saving device ".Economizer being installed on the fire grate of former boiler, obturages well with brick in the outside.When the coal combustion of combustion chamber (17), burner (18) will sharply heat up, condition in sufficient oxygen supply, the burning aggravation, furnace temperature raises, and water band (8) produces steam, enters mixed air vessel (16) by air admission hole (11), mixed steam and air spray to combustion chamber (17) equably by hole (13), with the coal smoke gas mixed combustion once more that produces in the coal.When a part of water in the water band (8) becomes the steam minimizing, replenish automatically by water inlet pipe (3) by water tank (5).The water of water tank (5) is to enter water tank (5) by being equipped with water pipe (6) by valve (7), mixes up valve and keeps water level, and unnecessary water is flowed out by overflow pipe (4).The specification of burner: the size according to former boiler is decided, and long (1/3rd to 1/4th) for former boiler, fixed grate uses the wide of this economizer to equate with two boiler outer side of door, and moving grate uses the wide width that is a bit larger tham fire grate of this economizer.

Claims (3)

1, a kind of boiler water coal gas resume combustion economizer is made up of burner (18) and steam generator, it is characterized in that:

A. burner (18) n shape exogenous wind cover (1) is contained in the outside of n shape inside casing (2), and with the hollow mixed air vessel (16) of upper periphery and two front side edge sealing lid (14) formation lower ending openings, n shape inside casing (2) surrounds combustion chamber (17),

The top of b.n shape inside casing (2) has mixes pore (13),

C. the steam generator comprises the tubular water band (8) that is contained in burner (18) back upper place horizontal positioned, and connects the steam inlet pipe (11) and the water inlet pipe that is connected water tank (5) (3) of burner (18) back upper place.

2, economizer as claimed in claim 1 is characterized in that the mixed air vessel (16) of n shape burner (18) rear side, its lower end closed and on move.

3, economizer as claimed in claim 1 is characterized in that being equipped with on tubular water band (8) and the water band heat absorbing sheet (9).

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