CN2163999Y - Pearlite bulking furnace with gas burner - Google Patents

Abstract

The utility model provides a pearlite bulking furnace with a gas burner. The pearlite bulking furnace is characterized in that the lower part of the hearth of the pearlite bulking furnace is provided with a hot gas burner; a gas generator is arranged in a pit at the side of the pearlite bulking furnace; coal is converted into hot coal gas in the gas generator, and then the hot gas burner directly arranged at the lower part of the hearth is burnt in the hearth, thus, hot gas in the pearlite bulking furnace can be burnt sufficiently, and the burning temperature of flames and spraying length can be flexibly adjusted. The utility model has the advantages that burnup is low, smoke dust pollution is eliminated, production cost is reduced, operating maintenance is convenient, and running is safe.

Description

Pearlite bulking furnace with gas burner

The utility model relates to the pearl stone puffing furnace of a kind of kiln, particularly a kind of coal-fired gasifying combustion.

At present, the coal-fired mode of most combusting heavy oil of domestic pearl stone puffing furnace or the solid-state burning of employing girdle is directly burnt coal.

The pearl stone puffing furnace of combusting heavy oil, in service must the adapted steam boiler, be used for production Steam Heating heavy oil storage tank and escort fuel oil to oil nozzle.The outmoded backwardness of oil nozzle structure that perlite manufacturer is commonly used, fuel-oil atmozation is bad, over-emitting black exhaust in service, the oil consumption height, power consumption and production labor are all more, the production cost height, under the situation in short supply at current fuel oil, that oil price rises suddenly and sharply, production cost is sharply increased.

Common coal-fired pearl stone puffing furnace is respectively established a combustion chamber in the puffing furnace both sides usually, and air blast is combustion-supporting below the fire grate of combustion chamber, the combustion system of coal in the combustion chamber is the solid-state burning of girdle, its operating feature is for lacking coal, sparing no effort to coal, and this coal-fired mode disadvantage is that coal burning is insufficient, slag carbon residue height, kiln over-emitting black exhaust in service, blackness of exhaustion and smoke dust discharge concentration exceed standard, and environmental pollution is serious, simultaneously, the coal consumption height, labor strength is big.

The purpose of this utility model provides a kind of coal-fired gasifying combustion pearl stone puffing furnace, and it can fully burn to coal, and the slag carbon residue is few, not over-emitting black exhaust in service, and blackness of exhaustion and smoke dust discharge concentration can be up to standard, reduced environmental pollution.

The purpose of this utility model is achieved in that it comprises puffing furnace, burner, airduct, gas generator, high pressure positive blower, gate valve, flange, it is characterized in that under the puffing furnace burner hearth, installing a thermal gas burner, in the melt pit on stove side the heating gas producer is installed, be connected to the heating gas outlet on the thermal gas burner coal gas interface that is installed in the puffing furnace lower furnace portion through the heating gas tube connector, to gasify and be connected on the high pressure positive blower respectively with airduct and burner secondary air channel, one, be hinged with respectively on the secondary air channel and transfer the wind gate valve, hot gas pipe flange connections refractory fibre felt seal, the air duct flange junction seals with asbestos pad.

The utility model has the advantages that: coal continuously-running 3-5 hour, flame combustion temperature and spray penetration are adjustable flexibly, heating gas sufficient combustion in the stove, coal consumption is low, blackness of exhaustion and smoke dust discharge concentration (GB9078-88) up to standard, operation, easy to maintenance, safe and reliable to operation, free from dust during slagging-off, long service life, non-environmental-pollution.

Do the embodiment explanation below in conjunction with accompanying drawing.

Fig. 1 is a structure chart of the present utility model.

Fig. 2 gives mixing thermal gas burner structure chart.

By Fig. 1-2 as can be known, in the other melt pit of pearl stone puffing furnace, install one and give mixing heating gas producer 4, heating gas outlet 15 is connected on the coal gas mouthpiece 10 of the thermal gas burner 2 that is installed in pearl stone puffing furnace burner hearth 1 bottom through heating gas tube connector 3, to gasify and be connected on the bellows chamber 20 through gate valve 19 with an airduct 18, secondary air channel 9 is connected on the bellows chamber 20 through airduct 16, gate valve 17, high pressure positive blower 21 is connected with bellows chamber 20, hot gas pipe flange 11 junctions refractory fibre felt seal, air duct flange 12 junctions seal with asbestos pad.

The heating gas mouthpiece liner 13 of burner 2 forms for the castable refractory ramming, give in the lining 13 and bury blind rivet 14, the heating gas outlet is conical shell, at secondary wind wind cover port of export installing multi-disc spinning disk 8, every spinning disk plate face and wind cover conical shell bus are the 35-40 degree angle of cut, rotation direction is dextrorotation, and burner bocca 5 usefulness high-temperature flame-proof casting material rammings form.

Operation principle: the heating gas producer is through baker, confirm to put stove behind each Plant in good condition, the point stokehold is at first from coal filling hole or remove pack into the slag of carbon residue 10% of cinder notch, slag granularity is advisable at 15-70mm, and lime-ash bed thickness 100-150mm is flat along stove cross section handle, an amount of at lime-ash end face frame kindling, again with the combustibles kindling that ignites, ignite for an a small amount of wind to stop behind the material to add an amount of coal-firedly from coal filling hole for wind, will burn prosperous for a wind again.All burn till when the coal seam and promptly to stop after flourishing for a wind, coal flat, shuts bell with the top, coal seam to 100mm place, heating gas outlet inwall lower edge, send a wind simultaneously, heating gas is lighted with very hot oven by heating gas port bocca place in the pearl stone puffing furnace burner hearth.At this moment, secondary wind is not opened earlier, and puffing furnace air inducing is opened slightly, discharges flue gas smoothly, and preventing that burner hearth is long-pending has heating gas too much, lights suddenly to cause " blowing out ".Treat to strengthen first and second valve opening degree by bath again behind the heating gas flame stabilization, regulate flame combustion temperature and spray penetration, treat that fire box temperature rises to 950-1000 ℃ and can feed intake, produce the fine perlite powder.During blowing out, stop earlier to close blower fan for primary and secondary air, stop air-introduced machine at last for crushed crude pearlite.Fire coal earlier is converted into heating gas in gas generator after, directly for being installed in the thermal gas burner of lower furnace portion in the burner hearth internal combustion.

The generating furnace gasified principle of heating gas: after the operation of burner hearth coal, be divided into following level from bottom to top: ash bed, oxide layer (claiming fire bed again), reducing zone, destructive distillation layer, drying layer.Coal moves from top to bottom in burner hearth, moves from bottom to top after gasifying agent (wind) is blown into by furnace bottom.Gasifying agent carries out gasification reaction in oxide layer and reducing zone after ash bed gives heat, at oxide layer coal by violent oxidation, produce a large amount of high-temperature gases, it with the gasifying agent that is blown in participate in burning composition become the high temperature gasification agent of reducing zone after fully mixing, in reducing zone high temperature gas flow with played reduction reaction by the scorching hot coal after the destructive distillation, temperature descends, and is converted into fuel gas simultaneously.Coal is heated in the destructive distillation layer and separates out volatile matter, finally becomes coke, and coal gives heat and removes moisture content in drying layer.

Claims (2)

1, a kind of coal-fired gasifying combustion pearl stone puffing furnace, it comprises puffing furnace, burner, airduct, gas generator, high pressure positive blower, gate valve, flange, it is characterized in that under the puffing furnace burner hearth, installing a thermal gas burner, in the melt pit on stove side the heating gas producer is installed, be connected to the heating gas outlet on the thermal gas burner coal gas interface that is installed in the puffing furnace lower furnace portion through the heating gas tube connector, to gasify and be connected on the high pressure positive blower respectively with airduct and burner secondary air channel, one, be hinged with respectively on the secondary air channel and transfer the wind gate valve, hot gas pipe flange connections refractory fibre felt seal, the air duct flange junction seals with asbestos pad.

2, coal-fired gasifying combustion pearl stone puffing furnace according to claim 1, the heating gas mouthpiece inside liner that it is characterized in that thermal gas burner gives and buries blind rivet, outlet is conical shell, at secondary wind wind cover port of export installing multi-disc spinning disk, every spinning disk plate face and wind cover inner conical cylindrical shell bus are the 35-40 degree angle of cut, rotation direction is dextrorotation, and the cavity between bocca and the gas exit is that gas mixes the chamber.

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