CN105240842A - Ball coal semi-gasification furnace of industrial boiler - Google Patents

Abstract

The invention provides a ball coal semi-gasification furnace of an industrial boiler. An air chamber and a longitudinal cylindrical combustion chamber of the ball coal semi-gasification furnace are separated through a furnace hearth, a furnace slag pushing disc of a furnace slag pushing mechanism is located above the furnace hearth, and a coal inlet formed in the upper portion of the combustion chamber is communicated with an outlet of a ball coal hopper; a combustion flame hole is formed in the upper portion of a rear furnace wall of the combustion chamber, and the indoor height of the combustion chamber enables a ball coal layer to be not lower than 800 mm. According to the technical scheme, the precedent of the briquette application that ball coal is used as fuel of the industrial boiler is created, the small space of a combustion chamber body, the feeding structure, the furnace hearth structure and the fuel layer working thickness not smaller than 800 mm are matched together, the thermal load is increased, and the technical purposes of complete heat release and high thermal capacity of the fuel are achieved; the requirement for the thermal power technical index of the industrial boiler is met, heated faces of heated boiler barrels and the like can be easily connected and arranged, and the manufacturing cost and the maintaining cost are both greatly lowered.

Description

Industrial Boiler ball coal half-gasification oven

Technical field

What the present patent application related to is Industrial Boiler, in particular the stove of Industrial Boiler.

Background technology

Industrial Boiler, be essentially the Industrial Boiler with grate furnace, with loose coal for fuel, but loose coal have that energy transformation ratio is low, exhaust emission is heavier and single coal performance deficiency and furnace structure to the technical problem such as selective fastidious of coal, comprise the administration guiding that national policy also more trends towards molded coal boiler application.But existing Industrial Boiler cannot adopt moulded coal to run, the shove charge of moulded coal very difficulty and loaded down with trivial details, be especially more difficult to abundant heat release with existing grate firing method, do not reach the elementary heat power technology requirement that Industrial Boiler normally runs, moulded coal is difficult to whole burning, burn-off rate is low, and coal wastage is large.

Summary of the invention

The goal of the invention of present patent application is that applicable use ball coal is fuel, high, the abundant heat release of burnout rate meets the requirement of Industrial Boiler thermal power running technology completely, and provides a kind of Industrial Boiler ball coal half-gasification oven.The Industrial Boiler ball coal half-gasification oven technical scheme that the present patent application provides, its main technical content is: a kind of Industrial Boiler ball coal half-gasification oven, it forms the air compartment bottom comprising and longitudinal tube-type combustion chamber of structure is enclosed by furnace wall in top, separated by siege between air compartment and combustion chamber, before slag pushing mechanism is arranged at combustion chamber, furnace wall arranges mouth, slag pushing disk is positioned on siege, between the slag-drip opening arranging furnace wall behind mouth and combustion chamber, back and forth the row's of pushing away cinder runs, coal feeding hole above combustion chamber offers on front furnace wall, the outlet of ball coal hopper communicates with coal feeding hole, enter coal propelling movement stopper rod and be arranged at ball coal hopper exit, burning-flame port is opened in furnace wall top behind combustion chamber, pass to main heated parts, described combustion chamber has the chamber height making ball coal seam be not less than 800mm, to be provided with the separation of separator of bearing balls coal top layer and coal feeding hole domed in side within the walls for the forehearth of coal feeding hole.

Industrial Boiler ball coal half-gasification oven technical scheme disclosed in the present patent application, open the moulded coalification application beginning that Industrial Boiler is fuel with ball coal, combustion chamber body space is little, it feeds intake and arrange structure, siege arranges structure structure and be not less than 800mm fuel bed operation thickness, common cooperation, thermic load improves, and achieves the complete heat release of fuel and high heat capacity, without waste of fuel, reach the thermal power technical requirement of Industrial Boiler, to the selection of coal without fastidious; Feeding intake and getting rid of cinder structure of its uniqueness, is not only and designs according to ball burning of coal, especially half gasification, and combustion, and enormously simplify the normal running operation of this Industrial Boiler, can realize automatic operating operation object; Without the need to arranging the furnace arch structure that grate firing uses again in combustion chamber, the stove part-structure of Industrial Boiler is formed more succinct, be also easy to connect, arrange the heating surfaces such as drum that are heated, manufacturing cost and maintenance cost reduce all greatly.

Accompanying drawing explanation

Accompanying drawing is the cut-open view of final assembly of the present patent application.

Detailed description of the invention

The Industrial Boiler ball coal half-gasification oven that the present patent application provides, it forms the air compartment 1 bottom comprising and longitudinal tube-type combustion chamber 2 of structure is enclosed by furnace wall in top, be separated by siege 3 between air compartment 1 and combustion chamber 2, before slag pushing mechanism 4 is arranged at combustion chamber, furnace wall 21 arranges mouth 20 place, described siege 3 extends horizontally to the slag-drip opening 23 of rear furnace wall 22 by arranging mouth 20, it is burning coal layer above siege 3, siege 3 is provided with or is evenly provided with gap, air port, the width in these gaps, air port is less than coal briquette diameter, both the air feed that effectively burns had been ensured, ensure that again cinder is not to whereabouts.The slag pushing disk 40 of slag pushing mechanism 4 is run by the reciprocal row's of pushing away cinder arranging between mouth 20 and slag-drip opening 23, on siege 3, in this enforcement structure, slag pushing mechanism 4 preferably adopts to run and controls stable hydraulic force mechanism, cinder is pushed slag chute 8.Front furnace wall above combustion chamber offers coal feeding hole 24, and ball coal hopper 5 outlet communicates with coal feeding hole 24, and coal feeding hole 24 times edges are lower landslide surface, are convenient to coal briquette and roll into combustion chamber 2 voluntarily, enter coal propelling movement stopper rod 6 and be arranged at ball coal hopper exit, in the present embodiment, enter coal and push the liquid presses piston pole that stopper rod 6 is hydraulic power mechanism, when entering coal propelling movement stopper rod 6 and exiting ball coal hopper exit, coal briquette is exported by ball coal hopper and rolls out, tumble and make an addition in combustion chamber 2, when entering coal propelling movement stopper rod 6 and releasing, enclose the outlet of ball coal hopper, at this moment ball coal hopper 5 is still equipped with the coal briquette of a great deal of, at this moment the ball coal seam thickness in combustion chamber 2 should be not less than 800mm, be preferably 800 ~ 1000mm, three working linings mainly formed during burning: the combustion slag blanket A of bottom, middle main combustion layer B and top treat combustion layer C.The forehearth of coal feeding hole 24 is provided with the separation domed 7 of separator of bearing balls coal top layer and coal feeding hole 24 in side within the walls, and the upper surface separating domed 7 becomes the lower landslide surface of coal feeding hole 24, waits that the ball coal top layer of firing layer C is not minimum along horizontal position higher than domed 7 upper surfaces of separation; The medial surface adduction separating domed 7 is to front furnace wall 21, and this adduction angle is corresponding with the half of ball coal spontaneous stocking angle, enables minimum along following complete filling in separation domed 7 of ball coal.Burning-flame port 25 is opened in furnace wall 22 top behind combustion chamber, passes to main heated parts.When this Industrial Boiler ball coal half-gasification oven runs, the outlet of closure ball coal hopper released by the coal propelling movement stopper rod 6 that enters on top, ball coal seam in combustion chamber 2 is not less than 800mm, be preferably the coal seam thickness of 800 ~ 1000mm, steam needed for burning oxygen supply air feed or half gas processed is constantly provided through siege 3 to combustion chamber 2 by air compartment 1, formation positive displacement is burnt, middle main combustion layer B upward treat that combustion layer C burning spreads, its burnout rate improves greatly, thus reduce q4 loss, air feed, walk in oxygen supply and the gap of confession steam between ball and ball, ensure the normal of burning and continuous service, reduce air leakage coefficient, improve efficiency of combustion and thermal power.It is very convenient and various that the main heated parts heating surface of boiler and the connection of Industrial Boiler ball coal half-gasification oven are arranged, after the drum that is heated in the present embodiment is connected with heat pipe and arranges burning-flame port 25, for strengthening the combustion intensity of burning-flame port 25, burning-flame port 25 place is provided with overfiren air port 9.

Claims (8)

1. an Industrial Boiler ball coal half-gasification oven, it is characterized in that it forms the air compartment (1) bottom comprising and longitudinal tube-type combustion chamber (2) of structure is enclosed by furnace wall in top, separated by siege (3) between air compartment (1) and combustion chamber (2), before slag pushing mechanism (4) is arranged at combustion chamber, furnace wall arranges mouth (20), slag pushing disk (40) is positioned on siege (3), between the slag-drip opening (23) arranging furnace wall (22) behind mouth (20) and combustion chamber, back and forth the row's of pushing away cinder runs, coal feeding hole (24) above combustion chamber offers on front furnace wall, the outlet of ball coal hopper communicates with coal feeding hole (24), enter coal propelling movement stopper rod (6) and be arranged at ball coal hopper exit, burning-flame port (25) is opened in furnace wall top behind combustion chamber, pass to main heated parts, described combustion chamber (2) has the chamber height making ball coal seam be not less than 800mm, the forehearth of coal feeding hole is provided with the separation domed (7) of separator of bearing balls coal top layer and coal feeding hole in side within the walls.

2. Industrial Boiler ball coal half-gasification oven according to claim 1, it is characterized in that siege (3) is provided with or is evenly provided with gap, air port, the width in these gaps, air port is less than coal briquette diameter.

3. Industrial Boiler ball coal half-gasification oven according to claim 1, is characterized in that ball coal seam is the coal seam thickness of 800 ~ 1000mm.

4. the Industrial Boiler ball coal half-gasification oven according to claim 1,2 or 3, is characterized in that slag pushing mechanism (4) is hydraulic force mechanism.

5. the Industrial Boiler ball coal half-gasification oven according to claim 1,2 or 3, is characterized in that under coal feeding hole (24) along being lower landslide surface.

6. Industrial Boiler ball coal half-gasification oven according to claim 1 or 5, is characterized in that the upper surface separating domed (7) becomes the lower landslide surface of coal feeding hole (24) along being lower landslide surface under coal feeding hole (24).

7. the Industrial Boiler ball coal half-gasification oven according to claim 1,2 or 3, it is characterized in that separating the medial surface adduction of domed (7) to front furnace wall (21), its adduction angle is corresponding with the half of ball coal spontaneous stocking angle.

8. the Industrial Boiler ball coal half-gasification oven according to claim 1,2 or 3, is characterized in that burning-flame port (25) place is provided with overfiren air port (9).