CN2234039Y - Chain boiler converting burning soft coal to anthracite - Google Patents

Abstract

The utility model discloses a chain boiler burning hard coal instead of burning soft coal, composed of a base, a fire grate, a coal-burning boiler chamber, a smoke boiler chamber and a pressure part. The coal-burning boiler chamber is composed of a low but long rear arch, an elevated front arch, a throat opening and a fire bed; high temperature flue gas flows from the rear arch to the front arch to enter the smoke boiler chamber for heating the pressure part by passing through the throat opening, and glowing carbon granules and radiation heat brought by the high temperature flue gas fire and burn a coal bed. With the advantages of novel design, simple structure, quick refitting speed, low cost, normal burning, stable air pressure, safe operation, low labour intensity and coal economization, the utility model burns favourably in using hard coal.

Description

Burn anthracitic chain-grate boiler by burning bituminous coal instead

The utility model is the anthracite chain-grate boiler that belongs to coal-burning boiler.

As everyone knows, chain-grate boiler generally is to burn bituminous coal.Anthracite is a kind of high-grade fuel energy, and its fixed carbon content is than bituminous coal mean height about 25%, and price is lower by 50% than bituminous coal, but its ignition point time high and that burn is long, so can not directly use at traditional bituminous coal chain-grate boiler.Also there is the anthracite chain-grate boiler in current China, and its structure and traditional bituminous coal chain-grate boiler differ greatly, and cost is also than bituminous coal chain-grate boiler height.The utility model is the transformation that traditional bituminous coal chain furnace pot is innovated, adopt the face arch of low and long rear arch and raising to form novel coal-fired furnace cavity, just the guiding of the high-temperature flue gas above the grate can be flowed to stokehold portion, and scatter on the coal seam that the grate front portion do not catch fire with red-hot coal particles, the face arch raising makes the grate front end that enough combustion spaces be arranged in addition, there is very thick high temperature gas-bearing formation radiations heat energy to give the coal seam between its heating surface and coal seam, it is caught fire.

The purpose of the utility model design is to adopt the low and long rear arch and the face arch of raising to form novel burner hearth, and electric control gear is adjusted the fire grate speed of service, traditional bituminous coal chain-grate boiler is transformed not changing pressure-containing parts and do not increase under the condition of fire grate length, and anthracitic chain-grate boiler is burnt in design, improve the coal-fired furnace cavity temperature, make the grate coal seam the normal combustion of fighting, reach the stable and characteristic easy to operate and safe of boiler pressure.

Also in conjunction with the accompanying drawings new design structure of the present utility model is described in detail as follows with embodiment below:

Fig. 1 always schemes by burn the structure that bituminous coal burns anthracitic chain-grate boiler instead.

As shown in Figure 1, the utility model is made up of base 1, fire grate 2, coal-fired furnace cavity 5, fiery cigarette burner hearth 9 and pressure-containing parts 10 etc.It is characterized in that having one by low and long and be connected with the right-hand member of aditus laryngis 8 to rear arch 7 upper ends of the little inclination of stokehold portion, horizontal rear arch section lower end is connected with the back wall, improve and be connected with the left end of aditus laryngis 8 to face arch 6 upper ends of the big inclination in stove rear portion, the lower end is connected with coal feed point, fire grate 2 is installed on the base (1) by track, and by transmission device drive running, advancing coal with the outlet of coal bunker (3) above the front end is connected, the inlet of aditus laryngis 8 communicates with coal-fired furnace cavity 5, outlet communicates with fiery cigarette burner hearth 9, burns anthracitic novel coal chamber structure thereby form chain-grate boiler; And the transmission device control connection that adds an electric control gear and fire grate 2, and form the burning coal adjustment structure that does not increase fire grate length.Described base 1 is the base of former bituminous coal chain-grate boiler.The front end of fire grate 2 and coal bunker 3 coals are connected, by the coal speed of coal gate 4 control coal bunkers 3 to fire grate 2, and add the speed of service that the drive motors of an electric control gear by fire grate 2 adjusted fire grate 2, make the grate above the fire grate 2 have time enough to burn anthracite, the fire grate rear end is connected with deslagging tube upper end by mop.Coal-fired furnace cavity 5 is by low and long and to the rear arch 7 of the little inclination of stokehold portion, improve and to the face arch 6 of the big inclination in stove rear portion, front and back baking (6,7) aditus laryngis 8 between the upper end and the grate above the fire grate 2 are formed the coal-fired furnace cavity that makes anthracite ignition and normal combustion easily, the high-temperature flue gas of its coal-fired furnace cavity from the stove rear portion along rear arch 7 guiding flow to stokehold portion, and enter fiery cigarette stove hall 9 by aditus laryngis 8 and remove to heat pressure-containing parts 10 etc., the high-temperature flue gas band of Liu Donging red-hot coal particles and is scattered on the anterior coal seam of grate simultaneously, and there is very thick high temperature gas-bearing formation radiations heat energy heating coal seam face arch 6 bottoms of improving and catches fire, and make the anthracite normal combustion.Fire cigarette burner hearth 9 is the fire box top of former bituminous coal chain-grate boiler, and its fiery cigarette import is connected with coal-fired furnace cavity 5 by aditus laryngis 8, and outlet is communicated with rear smoke chamber 12 by firebreak 11.Pressure-containing parts 10 grades are meant the shell 10 of former bituminous coal chain-grate boiler and are attached thereto the pressurized water pipe that connects.

In a word, anthracite chain-grate boiler according to the construction of present embodiment design improvement, just can burn anthracitic chain-grate boiler not changing pressure-containing parts and do not increase under the condition of fire grate length to traditional bituminous coal chain-grate boiler instead, the high-temperature flue gas at stove rear portion is flowed to face arch along rear arch, and scatter on the coal seam that the grate front portion do not catch fire with red-hot coal particles, very thick high-temperature flue gas layer heating coal seam is arranged below the face arch in addition, just make anthracite ignition and normal combustion easily.Adjusting the fire grate speed of service by the electric control gear that increases simultaneously can make the anthracite on the grate have time enough to burn.The utility model modern design is simple in structure; the fast cost of reconstruction speed is low; use that anthracite is started to exchange fire smoothly, burn normally, stable gas pressure, and production safety, low, the remarkable in economical benefits of labour intensity are arranged, and reduction blackness of exhaustion and soot emissions help advantages such as environmental protection.

Claims (2)

1, a kind ofly burn anthracitic chain-grate boiler by burning bituminous coal instead, it is by base (1), fire grate (2), coal-fired furnace cavity (5), fire cigarette burner hearth (9) and pressure-containing parts compositions such as (10), it is characterized in that having one by low and long and be connected with the right-hand member of aditus laryngis (8) to rear arch (7) upper end of the little inclination of stokehold portion, horizontal rear arch section lower end is connected with the back wall, raising also is connected with the left end of aditus laryngis (8) on the face arch (6) of the big inclination in stove rear portion, the lower end is connected with coal feed point, fire grate (2) is installed on the base (1) by track, and drive running by the transmission device of fire grate, advance with the outlet of coal bunker (3) that coal is connected above the front end and with coal gate (4) control coal seam thickness, the rear end is connected with slag bucket, the inlet of aditus laryngis (8) communicates with coal-fired furnace cavity 5, outlet communicates with fiery cigarette burner hearth (9), thereby forms the novel coal chamber structure that chain-grate boiler burns day bituminous coal; And the transmission device control connection that adds an electric control gear and fire grate (2), and form the burning coal speed regulating structure that does not increase fire grate length.

2, as claimed in claim 1ly burn anthracitic chain-grate boiler by burning bituminous coal instead, it is characterized in that coal-fired furnace cavity (5) is by low and long and to the rear arch (7) of the little inclination of stokehold portion, improve and to the face arch (6) of the big inclination in stove rear portion, aditus laryngis (8) between forward and backward arch (6, the 7) upper end and the compositions of the grates above the fire grate between forward and backward arch (6, the 7) lower end 2 make the coal-fired furnace cavity of anthracite ignition and normal combustion easily.