CN86203652U - Fluidizing reactor burning saw powder - Google Patents

Abstract

The utility model discloses a fluidizing reactor burning saw powder, which solves the problems of the saw powder of high moisture, short granularity, uneasy ignition, uninflammability, etc. The fluidizing reactor burning saw powder is characterized in that the grate of the blast chamber is a ventilation device composed of a plurality of small air buttons and a pore plate, the saw powder is fed by an air lock with tongue board and the sole-weight and negative-pressure blanking device of a feeding wind pipe, and the positive-pressure backfire can be prevented. Because the fuel of the fluidizing reactor burning saw powder is saw powder, the saw powder of the wood-working factory in forest region can be better used, and frequency of the fuel transport is reduced.

Description

Fluidizing reactor burning saw powder

The invention is to be the fluidized bed furnace of fuel with the remaining wood sawdust of timber processing, can make to contain moisture and reach 55% wood sawdust and light and after-flame.

At present China also Shang Wuzhuan be the fluidized bed furnace of fuel with the wood sawdust.The U.S. has certain company to produce the fluidized bed furnace of a kind of firebrand bits, and the fluidized bed furnace main distinction of it and the invention is: its air-distribution device is a tubular type; Wood chip adding mode is to be fed by furnace roof, by the wind-force feed; Body of heater is circular equal diameter burner hearth, and outer iron sheet is coated; There is not expansion chamber; Sparking mode is to light a fire by igniter with oil or natural gas; The bed material adopts salic very high ceramic refractory.

The purpose of the invention is that to solve wood sawdust moisture big, and granularity is little to be difficult for lighting problem with after-flame.

The invention feature is that the air-distribution device shown in (5) among Fig. 1 is by the blast cap shown in (13) among Fig. 3, the guide plate shown in (12), and the combustion chamber fire grate of the formation of the orifice plate shown in (14).Blast cap (13) as shown in Figure 4, its ventilating opening and horizontal plane angle are that 14～17 ℃ of ventilating opening diameters are φ 2.2～φ 2.4, blast cap is closely arranged, and locatees with guide plate.Another feature of this stove is the deadweight negative pressure doffer with feeding airduct shown in (15) among band hyoplastron flapper and Fig. 1.The hyoplastron flapper is made up of the fixture shown in the hyoplastron shown in (11) among Fig. 2 and (10).Air air blast shown in (1) in Fig. 1 is divided into three strands through outlet conduit (2), one is a wind of burning, by adjustment doors and bellows (4), be blown in the combustion chamber through air-distribution device (5), make the bed material seethe with excitement and burn with the wood sawdust that falls from doffer (8).The secondary wind of second strand of wind for burning, by being in charge of (3) after both walls overfire air port (9) enters suspension section, form secondary firing, other has a small gangs of wind to enter charging gear from feeding airduct (15), through the brick baffle door, enter every flue and expansion chamber (6), deliver to the hothouse of required hot gas at last through gas distributing chamber.Fluidized layer temperature and flue gas temperature of hearth outlet are controlled with the primary and secondary air air capacity.Because adopt the Boiling Combustion mode, the ash content of wood sawdust seldom stays soot particle hardly after the completing combustion, therefore can not expect as bed with self the ash content of burning.The invention has adopted silica sand as medium bed material, does not arrange heating surface in the bed, controls bed temperature with air output (excess air), and flue gas is directly as thermophore.In a word, the characteristics of this stove are: air-distribution device is a solid matter blast cap formula; Wood chip adding mode is that the stokehold feeds, by the deadweight negative pressure blanking of hyoplastron flapper and feeding airduct; Body of heater is a back taper flaring square burner hearth, brick structure; The stove end is furnished with downward-flow flue and expansion chamber; Sparking mode is directly to light a fire with match; The bed material adopts silica sand.

Above content also is the embodiment of the invention.

This fluidized bed furnace is the residue material-wood sawdust that uses in wood-working factory's saw lumber process.Thermophore carry 300,000 kilocalories/hour heat, can drive design capacity is 23.52 meters every ³Two of dry kilns, nearly 4000 meters of year desiccated wood ³, 160,000 yuan of annual value of production can make the clout of forest zone timber processing be fully used, and improve the prerssure on transport situation.

Accompanying drawing 1 is for being the schematic diagram of the fluidized bed furnace of fuel with the wood sawdust;

Accompanying drawing 2 is the doffer sketch of feed system;

Accompanying drawing 3 is the air-distribution device profile;

Accompanying drawing 4 is blast cap figure.

Claims (1)

1. A kind of is the fluidized bed furnace of fuel with the wood sawdust, it is by feed system, give wind system, combustion chamber and hot gas fume conveying system constitute, it is characterized in that the air-distribution device that the fire grate of this stove combustion chamber is made up of a plurality of little blast caps and orifice plate, the ventilating opening of blast cap and horizontal plane angle are 14～17 degree, the ventilating opening diameter is 2.4 millimeters of φ 2.2～φ, its feed system is the deadweight negative pressure doffer of a band hyoplastron flapper and feeding airduct, the hyoplastron flapper is made up of hyoplastron and fixture, and this fluidized bed furnace is to adopt silica sand to expect as bed.

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