CN2534469Y - Vortex furnace arch adjustable shaped coal combustion furnace - Google Patents

Abstract

A spin flow furnace arch adjusting coal combustor, which belongs to the technology field of coal fired boiler. The structure is that a lifting dual layer strobe arranged on the front end of the movable fire bed and a combination furnace arch supported on the furnace wall and arranged on the upper area of the movable fire bed cover the fire bed. A rectangle outlet connected to the upper smoke chamber is arranged between the rear horizontal section and the inner wall of the furnace wall. A car type strobe which is arranged in the rear wall and is moved forward and backward blocks or opens the rectangle outlet. The diversion arch under the combined furnace arch is vertical furnace wall. A circular outlet which is connected to the smoke channel is arrange in the furnace wall of the cyclone combustion area. The main combustion area and the combustion ash area are connected to the cyclone combustion area through the tangential channel. The advantage is that the combustion process is effectively controlled by wind capacity adjusting of each wind chamber and changing the propagation direction and speed of fir and smoke in the coal layer, the firing speed of the fuel layer is fast, the adaptability capability of coal type is strong, the effect of desulfurization nitrogen fixation and smoke elimination dust reducing is good, the combustion efficiency is good, the load adjusting scope is big.

Description

The adjustable moulded coal combustion furnace of eddy flow chimney arch

Technical field:

The utility model belongs to the coal-burning boiler technical field.

Background technology:

The moulded coal burning is one of clean coal combustion technology, and at present, the moulded coal burning industrial boiler of the square honeycomb briquette of state's internal combustion is just at the early-stage, and burner hearth is two chambers rectangular structure, adopts loose piece to promote fire grate and gravity-flow ventilation more; Its deficiency is that ignition speed is slow, does not control the technological means of combustion process, and thermic load can not be regulated, thereby has limited the range of application of this combustion system.

Summary of the invention:

Technical problem to be solved in the utility model is:

The adjustable moulded coal combustion furnace of eddy flow chimney arch that a kind of ignition speed is fast, can control combustion process is provided.

The technical solution of the utility model is as follows:

At the double-deck gate of the lift of mobile grate front end, this bilayer gate is front and back twice and one rise and one drop, upper space at mobile grate has the combined furnace arch that is supported on the furnace wall that grate is covered, this combined furnace arch by the stokehold behind the stove successively by vertical section a, arc section b, preceding horizontal segment c, tilting section d and back horizontal segment e constitute, having a rectangle to export between back horizontal segment e and furnace wall inwall communicates with the top smoke-box, after the car formula gate that moves forward and backward that is provided with within the walls can be with this rectangle outlet blocking-up or open-minded, water conservancy diversion arch below the combined furnace arch is upright furnace wall, it is divided into the combustion chamber the main combustion zone B at rear portion, burnt zone C and anterior cyclone firing district A, have round exit to lead to bilateral or one-sided flue on the bilateral of cyclone firing district A or the one-sided furnace wall, main combustion zone B and burnt zone C communicate with cyclone firing district A through tangential passage.

The beneficial effects of the utility model are:

Technological means such as the fiery cigarette direction of propagation in each air compartment air quantity of available adjustment and the change coal seam and spread speed control effectively to combustion process, the ignition speed of fuel bed is fast simultaneously, the coal adaptive capacity is strong, the smoke elimination dust-laying effect is good in desulfurizing and fixating nitrogen and the stove, the efficiency of combustion height, load regulation range is big.

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

Fig. 2 is the sectional view of the utility model bilateral cyclone chamber;

Fig. 3 is the sectional view of the one-sided cyclone chamber of the utility model;

Wherein: the 1st, mobile grate, the 2nd, cyclone chamber side wall, the 3rd, water conservancy diversion arch, the 4th, combined furnace arch, the 5th, back wall, the 6th, car formula gate, the 7th, rectangle outlet, the 8th, primary zone, burnt zone side wall, the 9th, smoke-box, the 10th, tangential passage, the 11st, cyclone chamber round exit, the 12nd, the double-deck gate, the 13rd of lift, flue, the 14th, moulded coal.

The specific embodiment:

The lifting of the front and back twice flashboard of the double-deck gate of the lift of mobile grate front end and the start and stop synchronous locking of fire grate guarantee that coal operation and coal seam in the traveling process, are in closed state and unlikely leaking out in the stove all the time in stove.The existence of the high temperature cyclone firing district A that forms above mobile grate has been quickened catching fire of fuel and has been burnt, strengthened the immixture of inner flue gas of the stove, has improved the fuel gas in the flue gas and the after-flame degree of flying dust.Under the normal condition, car formula closing gate, the high-temperature flue gas of main combustion zone B and burnt zone C tangentially enters cyclone firing district A, forms the high temperature eddy flow, and the round exit of swirling eddy on bilateral (see figure 2) or one-sided (see figure 3) furnace wall enters bilateral or one-sided flue.Meanwhile the flame in the fuel bed is propagated and is prolonged casually to grate front end fuel-rich regions (being A district and B district), quickens fuel fire and burning, and thermic load can raise rapidly.In case of necessity can be with car formula gate opening, the high-temperature flue gas flow direction changes, the spin intensity of the swirling eddy in the cyclone firing district A weakens even disappears, flame in the fuel bed prolongs casual to the poor fuel region and the slag blanket of grate rear end, chamber temperature reduces rapidly, the flue gas short circuit enters smoke-box, and thermic load can be reduced rapidly.

Claims (1)

1, the adjustable moulded coal combustion furnace of a kind of eddy flow chimney arch, by mobile grate, side wall, back wall is formed, it is characterized in that: at the double-deck gate of the lift of mobile grate front end, this bilayer gate is front and back twice and one rise and one drop, upper space at mobile grate has the combined furnace arch that is supported on the furnace wall that grate is covered, this combined furnace arch by the stokehold behind the stove successively by vertical section a, arc section b, preceding horizontal segment c, tilting section d and back horizontal segment e constitute, having a rectangle to export between back horizontal segment e and furnace wall inwall communicates with the top smoke-box, after the car formula gate that moves forward and backward that is provided with within the walls can be with this rectangle outlet blocking-up or open-minded, water conservancy diversion arch below the combined furnace arch is upright furnace wall, it is divided into the combustion chamber the main combustion zone B at rear portion, burnt zone C and anterior cyclone firing district A, have round exit to lead to bilateral or one-sided flue on the bilateral of cyclone firing district A or the one-sided furnace wall, main combustion zone B and burnt zone C communicate with cyclone firing district A through tangential passage.

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