CN201652323U - Synchronous combustion chain furnace with function of full coal layer inflammation - Google Patents

Abstract

The utility model relates to an industrial kiln, which is characterized in that a fronting vertical furnace is arranged at the front end of a chain grate, wind rooms with air outlets are arranged on two sides of the inner wall of the chain grate, a fire coal inlet at one end of the upper part of the fronting vertical furnace is connected with a coal supplying hopper, a coal outlet at the lower part of the fronting vertical furnace is communicated with the chain grate, a gas chamber formed by a free constructional surface and a furnace chamber front wall is arranged on the coal layer of the fronting vertical furnace, a rear arch is arranged at the rear end of a chain furnace chamber, a declined type front arch for strengthening combustion is arranged at the front end of the chain furnace chamber, a coal gas flame channel communicated with the gas chamber is arranged at the upper end of the front arch, an injection air conduit and the coal gas flame channel are communicated, and a coal gas ignition mouth communicated with the coal gas flame channel is formed on the front arch. The utility model is a synchronous combustion chain furnace with the function of full coal layer inflammation, which has the advantages of large combustion intensity, high efficiency, less pollution, strong adaptability to coal variety, dispenses with pretreatment of coal burning, and has no additional energy consumption basically.

Description

The full coal seam synchronousing combustion chain furnace that catches fire

Technical field

The utility model relates to a kind of Industrial Stoves, is specially a kind of full coal seam synchronousing combustion chain furnace that catches fire.

Technical background

Mode chain furnace combustion is the most widely used combustion technology of coal-burned industrial boiler and Industrial Stoves, its advantage is that system is simple, reliable, the operation power consumption is low, the flying dust share is more much smaller than coal dust, water-coal-slurry, CFBC, the gas cleaning cost is low, lime-ash is handled easily, relatively be fit to Industrial Boiler and Industrial Stoves are small-sized and the characteristics of disperseing, the countries in the world coal-burned industrial boiler is all based on chain-grate boiler.Its intrinsic shortcoming is can not catch fire immediately after fire coal enters burner hearth, need be through one section long drying, warm, the radiant heat that drying and preheating and the heat that needs with postignition have encircleed before and after burned flame and the roasting red refractory material from burner hearth, coal can only be earlier drawing from the upper surface in coal seam, the flame that is drawing is propagated below the coal seam more gradually, and the needed air that burns is upwards to send from following, the reverse circulation way of this ignition process and flame and air is unfavorable for burning very much, so mode chain furnace combustion intensity and efficiency of combustion are low, it is little to be difficult to adapt to volatile matter again, the coal that moisture or ash content are big.

The utility model content

Technical problem to be solved in the utility model and provide that a kind of combustion intensity is big, efficient is high, pollution is little, coal adaptability is strong, and fire coal need not preliminary treatment, the full coal seam of the additional energy consumption synchronousing combustion chain furnace that catches fire.

The utility model adopts following technical scheme:

The utility model is provided with a preposition vertical heater at the traveling-grate stoker front end, its inwall both sides are provided with the air compartment that has air outlet, top one end of preposition vertical heater has coal-fired import to link to each other with feeding-coal bucket, the bottom of preposition vertical heater has coal outlet to be connected with traveling-grate stoker, free accumulation face that forms on the preposition vertical heater coal seam and burner hearth front wall are formed gas chamber, be provided with rear arch in the grate-fired furnace rear end, be provided with the dipping type face arch of overheavy firing at the grate-fired furnace front end, be provided with the gas burner passage that is connected with gas chamber in the face arch upper end, injection airduct and gas burner passage are connected, face arch is provided with the coal gas ignition mouth that is connected with the gas burner passage, preposition vertical heater air blast and injection airduct are connected, and preposition vertical heater air blast was connected by air compartment communicating pipe and air compartment.

The beneficial effects of the utility model:

The utility model is provided with a preposition vertical heater in the chain furnace front portion, coal is fulfiled drying, preheating ahead of schedule in preposition vertical heater, volatile matter is separated out with catch fire, ignite whole ignition process such as solid particle, make the whole thickness in the coal seam that enters burner hearth on the chain furnace all fire burns, air is sent to the coal seam on the chain under the fire grate, and combustion process is promptly carried out synchronously in whole coal seam thickness.Flame on the gas burner of grate-fired furnace top gas burner passage and the preposition vertical heater lower chain-grate stoker constitutes C shape.The coal gas of supervening in the preposition vertical heater enters burner hearth and forms the segment space burning from top; The face arch of descending layout cooperates with rear arch, forces the furnace flame stroke to be serpentine.This has just fundamentally changed the combustion mechanism of chain furnace, overcome its intrinsic shortcoming, the stove internal combustion is strengthened, the flying dust share further reduces, coal adaptability enlarges, and has kept the various advantages of mode chain furnace combustion simultaneously again, and the utility model is that a kind of combustion intensity is big, efficient is high, pollution is little, coal adaptability is strong, the full coal seam that fire coal need not preliminary treatment, the not additional substantially energy consumption synchronousing combustion chain furnace that catches fire.

During the utility model normal combustion, boiler slag carbon content can drop to below the 10-14%, compares with general chain-grate boiler, and the thermal efficiency can improve 4-5 percentage point, and flue dust initial ejection concentration reduces 30-50%, blackness of exhaustion stably reaching standard.

Description of drawings

Accompanying drawing 1 is the utility model structural representation;

Accompanying drawing 2 is that the A of the utility model accompanying drawing 1 is to structural representation.

In the accompanying drawings: 1 preposition vertical heater, 2 coal outlets, 3 traveling-grate stokers, 4 air outlets, 5 air registers, 6 air compartments, 7 coal-fired imports, 8 feeding-coal buckets, 9 gas burners, 10 injection airducts, 11 free accumulation faces, 12 gas burner passages, 13 gas burners, 14 grate-fired furnaces, 15 Boiler doors, 16 face arch, 17 face arch bottom air compartments, 18 coal gas ignition mouths, 19 burner hearth front walls, 20 rear arches, 21 inspection openings, 22 fire grate bottom air compartment blast pipes, 23 preposition vertical heater air blasts, 24 air compartment communicating pipes, 25 injection airduct air registers, 26 underlying seams.

The specific embodiment

As shown in Figure 1, there is a preposition vertical heater 1 the utility model traveling-grate stoker front portion, it is trapezoidal that its inwall vertical section becomes, falling trapezoidal two sides has air compartment 6 and air outlet 4, top has coal-fired import 7 to link to each other with feeding-coal bucket 8, the bottom has coal outlet 2 to communicate with traveling-grate stoker 3, and free accumulation face 11 that forms on the preposition vertical heater coal seam and burner hearth front wall 19 are formed gas burner 9.As shown in Figure 2, the utility model is provided with the dipping type face arch 16 of overheavy firing and coal gas ignition mouth 18, preposition vertical heater air blast 23, inspection opening 21, air compartment communicating pipe 24 and air register 5 thereof, injection airduct air register 25 at grate-fired furnace 14 front ends.Be provided with gas burner passage 12 in face arch 16 upper ends, injection airduct 10 and gas burner passage 12 are connected, coal gas ignition mouth 18 is communicated with face arch 16 and gas burner passage 12, coal outlet 2 by preposition vertical heater 1 bottom is fallen ablaze coal on the traveling-grate stoker 3, the gas burner 13 that is positioned at flame 26 and gas burner passage 12 on the ablaze underlying seam on the traveling-grate stoker 3 enters grate-fired furnace 14 respectively, form " C " shape flame, dipping type face arch 16 forces the furnace flame stroke to be serpentine with rear arch 20.This has just fundamentally changed the combustion mechanism of chain furnace, overcome its intrinsic shortcoming, the stove internal combustion is strengthened, the flying dust share further reduces, coal adaptability enlarges, and has kept the various advantages of mode chain furnace combustion simultaneously again, and the utility model is that a kind of combustion intensity is big, efficient is high, pollution is little, coal adaptability is strong, the full coal seam that fire coal need not preliminary treatment, the not additional substantially energy consumption synchronousing combustion chain furnace that catches fire.

When using the utility model to put into operation for the first time, open Boiler door 15, on traveling-grate stoker 3, drop into the new coal of kindling material and part earlier, open boiler induced-draft fan and air blast in turn.After treating that new coal fire burns, turn off the blast, the spent coal shovel of a part is gone in the preposition vertical heater 1 as kindling material, another part pushes face arch 16 belows, add suitably new coal respectively on traveling-grate stoker 3 spent coals and in the preposition vertical heater by Boiler door 15 and feeding-coal bucket 8, again open boiler blower, in face arch bottom air compartment 17, blow by fire grate bottom air compartment blast pipe 22, the underlying seam 26 of face arch 16 fire burns form flame.Open preposition vertical heater air blast 23, air enters air compartment 6 by preposition vertical heater air compartment communicating pipe 24, through air outlet 4 coal seam air feed in preposition vertical heater 1, regulate air register 5 and injection airduct air register 25, keep suitable air quantity outwards not smolder, after treating that wherein new coal combustion is stable, from feeding-coal bucket 8, through coal-fired import 7 normal coal in preposition vertical heater 1, start the drive motors of traveling-grate stoker 3, the coal that has burnt in the preposition vertical heater 1 is constantly sent into grate-fired furnace 14 by coal outlet 2 by traveling-grate stoker 3, realize the full coal seam synchronousing combustion that catches fire, enter out pit until burning to slag; The coal gas that produces in the preposition vertical heater 1 is in gas burner passage 12, under the effect of boiler induced-draft fan, injection airduct 10, light by coal gas ignition mouth 18 and to be introduced into grate-fired furnace 14 tops, form " C " shape flame with the ablaze underlying seam flame 26 that is positioned on the traveling-grate stoker 3, the relative position of face arch 16 and rear arch 20 forces the furnace flame flow process to be serpentine outflow burner hearth.Regulate the gait of march and the corresponding adjusting each several part air quantity of traveling-grate stoker 3, just can regulate burning load, make it to reach the best combustion operating mode.

Claims (1)

1. the full coal seam synchronousing combustion chain furnace that catches fire, it is characterized in that being provided with a preposition vertical heater (1) at traveling-grate stoker (3) front end, its inwall both sides are provided with the air compartment (6) that has air outlet (4), top one end of preposition vertical heater (1) has coal-fired import (7) to link to each other with feeding-coal bucket (8), the bottom of preposition vertical heater (1) has coal outlet (2) to be connected with traveling-grate stoker (3), free accumulation face (11) that forms on the preposition vertical heater coal seam and burner hearth front wall (19) are formed gas chamber (9), be provided with rear arch (20) in grate-fired furnace (14) rear end, be provided with the dipping type face arch (16) of overheavy firing at grate-fired furnace (14) front end, at the gas burner passage (12) that face arch (16) upper end is provided with and gas chamber (9) is connected, injection airduct (10) and gas burner passage (12) are connected, face arch (16) is provided with the coal gas ignition mouth (18) that is connected with gas burner passage (12), preposition vertical heater air blast (23) and injection airduct (10) are connected, and preposition vertical heater air blast (23) is connected by air compartment communicating pipe (24) and air compartment (6).

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