CN2888279Y

CN2888279Y - Secondary combustion organic heat carrier coal-fired boiler

Info

Publication number: CN2888279Y
Application number: CNU2005200940422U
Authority: CN
Inventors: 姜兴海
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-01
Filing date: 2005-12-01
Publication date: 2007-04-11
Anticipated expiration: 2015-12-01

Abstract

The utility model relates to an oven, a two times burning organic carrier coal oven, on the oven body is equipped with a flue communicated with an oven chamber, on the bottom is equipped with an ash storehouse, the upper of the ash storehouse inside the oven body is the two times burning chamber, on the top of the two times burning chamber is a one time burning chamber, on the inner circumference of the interlayer outside the one time burning chamber is arranged with a plurality of the transverse smoke and fire pipe, the inlet of which is communicated with the smoke and fire outlet of the burning chamber, the drain port is communicated with the oven chamber, inside the oven chamber is lined with a plurality of heating tube bundles in the interleaving. The utility model structure is innovative, the organic carrier cooling oven grate in the high temperature area adopts the measurements of increasing flowing volume and accelerating the flowing speed; the smoke and fire flue in the secondary high temperature are adopts receiving heat outside tube, slowing down the smoke flowing speed inside the tube, low heating inducing efficiency on the way; in the low temperature area of the oven chamber is adopted by the perpendicular convection flushing receiving heat, the whole oven body is heated evenly on each surface without the over heated surface. The utility model relates not only to secure the heating exchange efficiency on the whole but also to provide the possibility of preventing to be charcoaled and to be carbon accumulated.

Description

Second-time burning organic heat carrier combustion coal boiler

Technical field:

The utility model relates to boiler, particularly boiler of organic heat carrier.

Background technology:

Be used for the high temperature organic heat carrier of boiler of organic heat carrier at present, be commonly called as conduction oil, be divided into four kinds: biphenyl (C ₆H ₆) ₂, be called for short DP; Biphenyl ether (C ₆H ₆) ₂O ₂Be called for short DPE; Dowtherm 26.5%DP+73.5%DPE; Dimethylmethane C ₁₅H ₁₆Its common hot rerum natura is: carrying temperature height, kinematic viscosity is big.The most outer coil arrangements of burner hearth that adopt of present boiler, heat transfer efficiency is low, waste energy, minority is taked other structure, the utmost point inhomogeneities of resistance made the particularly easy carbon deposit in high-temperature region of boiler heat-transfer surface between each heat exchanger tube was imported and exported between body of heater is imported and exported, in the stove, caused easily " burning " damage of boiler, particularly bear the organic heat carrier cool furnace comb of the highest temperature, very easily produce carbon deposit and make its too early damage, service life is short, and dangerous.

Summary of the invention:

The purpose of this utility model is to overcome above-mentioned not enough problem, and a kind of second-time burning organic heat carrier combustion coal boiler is provided, and avoids the deposition of charing and carbon deposit, prolonged boiler service life, energy-conserving and environment-protective.

The technical scheme that the utility model is adopted for achieving the above object is: second-time burning organic heat carrier combustion coal boiler, there is smoke pipe to be communicated with on the body of heater with burner hearth, grey storehouse is arranged at the bottom, Hui Cang top is secondary combustion chamber in the body of heater, be the primary zone on the secondary combustion chamber, primary zone's external jacket inner periphery is arranged several vertical pyrotechnics pipes, and the import of pyrotechnics pipe is communicated with the outlet of combustion chamber pyrotechnics, floss hole is communicated with burner hearth, cross arrangement heat-exchanging tube bundle in the burner hearth.

Described primary zone upper fire-grating tube pitch and secondary combustion chamber lower fire grating gap ratio are 4-5: 1.

Be equipped with in the described chuck and make the organic heat carrier flow velocity that enters the upper fire-grating pipe greater than the helical baffles that enters other part flow velocitys of chuck.

The described secondary combustion chamber wall of going up is the thermal insulating warm-keeping layer that refractory material constitutes.

Described body of heater is double-deck, and internal layer is a heat-insulation layer, and skin is the rigidity skin.

Described primary zone upper wall surface is equipped with the live body seal cover.

Have the firecracker input port on the described smoke pipe.

The utility model is compared with other like products, has outstanding feature: novel structure, and overheated flue gas is in pyrotechnics pipe convection heat transfer' heat-transfer by convection forward, the microcosmic heat transfer efficiency is low, prevent or reduce the outer critical surface charing of pyrotechnics pipe, even and the charing particle also only adhere to for instability, can not pile (sinking) and amass.On the macroscopic view, pyrotechnics pipe total sectional area is big, and the high-temperature flue gas flow velocity is slow, and unit (single) area heat output is few, and is same, and it is low manage outer critical surface charing probability, and the charing amount is little, and adhesive force is little, and tiny charcoal particle easily shifts out body of heater with liquid, the filtration removing.Because pyrotechnics pipe total heating surface is long-pending big, the cigarette temperature that changes upper furnace over to declines to a great extent, avoids the gravity sedimentation of the interior organic heat carrier charing of heat-exchange tube (bundle), charcoal particle simultaneously.Overlapping up and down double combustion chamber, second-time burning, energy-conserving and environment-protective.Last secondary combustion chamber is all taked the thermal insulating warm-keeping layer that is made of refractory material, promptly guarantees the needed temperature environment of burning, prevents all round hot-spot and make organic heat carrier charing (carbon deposit) of combustion chamber again.Install helical baffles additional, make stove cold conditions organic heat carrier, both guaranteed the cooling of furnace grate tube, strengthen the power of washing away again, the deposition of charing and carbon deposit in fundamentally avoiding managing inner tubal wall at first mainly by passing through in the upper fire-grating pipe.The body of heater outside installs heat-insulation layer and rigidity guard shield additional, both avoided heat loss, energy-conservation, guarantee safety again, be provided with in " firecracker ash disposal mouth ", can be placed in the stove in service small-sized fireworks and firecrackers is lighted at any time, its shaking force (shock wave) that is produced that explodes can make the long-pending dust of inboard wall of furnace body fall, and gets rid of with slag, dispels thermal resistance simultaneously, keeps heat exchanger effectiveness.

To sum up, the utility model is taked " increasing " flow in the organic heat carrier cool furnace comb of high-temperature region, the measure of " quickening " flow velocity; Outside taking pipe, the pyrotechnics pipe of inferior high-temperature region is heated, flue gas flow rate slows down in the pipe, forward inefficient the heat transfer, total pyrotechnics heating surface of tubes is long-pending to be strengthened, the unit are received heat is little, vertical convection is washed away and is heated in the low-temperature space of burner hearth is taked to manage, make whole body of heater everywhere heating surface be heated evenly, do not have " burning (dead angle) heating surface ".Both guaranteed the overall thermal exchange efficiency, for avoiding charing, the deposition of charcoal provides may again.

Description of drawings:

Fig. 1 is the utility model outside drawing.

Fig. 2 is an A-A view among Fig. 1.

Fig. 3 is a B-B view among Fig. 2.

Fig. 4 is a C-C view among Fig. 2.

Fig. 5 flows to schematic diagram for organic heat carrier.

The specific embodiment:

Second-time burning organic heat carrier combustion coal boiler as shown in the figure, body of heater is double-deck, internal layer is a heat-insulation layer 7, skin is a rigidity skin 6, there is smoke pipe 2 to be communicated with on the body of heater with burner hearth, firecracker input port 1 is arranged on the smoke pipe, bottom of furnace body has grey storehouse 5, Hui Cang top is secondary combustion chamber 15 in the body of heater, be primary zone 13 on the secondary combustion chamber, primary zone's external jacket inner periphery is arranged several vertical pyrotechnics pipes, and Hui Cang top is primary zone 13 and 15 two combustion chambers of secondary combustion chamber in the body of heater, the combustion chamber has two charging apertures 4 up and down, and primary zone's upper wall surface is equipped with live body seal cover 12.Deashing hand hole 3 is arranged at charging aperture top on the body of heater, primary zone's upper fire-grating pipe 14 spacings and secondary combustion chamber lower fire grating 16 gap ratios are 4-5: 1, last secondary combustion chamber wall is the thermal insulating warm-keeping layer 11 that refractory material constitutes, external jacket 8 inner peripherys in combustion chamber are arranged several vertical pyrotechnics pipes 10, the import of pyrotechnics pipe is communicated with the outlet of combustion chamber pyrotechnics, floss hole is communicated with burner hearth, cross arrangement convective heat exchange tube bundles 9 in the burner hearth.Be equipped with in the chuck to make and enter the organic heat carrier flow velocity of upper fire-grating pipe greater than the helical baffles 18 that enters other part flow velocitys of chuck from organic heat carrier import 17.

During work, bunker coal is rendered on primary zone's heat carrier cool furnace comb, in stove under the suction function, air is the reverse charcoal fire layer that passes through downwards, enter secondary combustion chamber, with carry out second-time burning from the fallen carbon residue in primary zone (broken foam), the burning high-temperature flue gas that heat release produced upwards enters in the burner hearth of upper boiler through the equally distributed some pyrotechnics pipes of circumference, carry out sufficient heat exchange with the heat-exchanging tube bundle of cross arrangement, turn back through " S " type repeatedly, vertically wash away, go out boiler from smoke pipe behind the convection heat transfer' heat-transfer by convection.

Claims

1, second-time burning organic heat carrier combustion coal boiler, smoke pipe is arranged on the body of heater, grey storehouse is arranged at the bottom, it is characterized in that: Hui Cang top is secondary combustion chamber (13) in the body of heater, be primary zone (15) on the secondary combustion chamber, primary zone's external jacket (8) inner periphery is arranged several vertical pyrotechnics pipes (10), and the import of pyrotechnics pipe is communicated with the outlet of combustion chamber pyrotechnics, floss hole is communicated with flue, cross arrangement heat-exchanging tube bundle (9) in the flue.

2, second-time burning organic heat carrier combustion coal boiler according to claim 1 is characterized in that: upper fire-grating pipe (14) is housed in the primary zone, lower fire grating (16) is housed on the secondary combustion chamber, upper fire-grating tube pitch and lower fire grating gap ratio are 4-5: 1.

3, second-time burning organic heat carrier combustion coal boiler according to claim 1 is characterized in that: be equipped with in the chuck (8) and make the organic heat carrier flow velocity that enters the upper fire-grating pipe greater than the helical baffles that enters other part flow velocitys of chuck (18).

4, second-time burning organic heat carrier combustion coal boiler according to claim 1 is characterized in that: the secondary combustion chamber wall is the thermal insulating warm-keeping layer (11) that refractory material constitutes.

5, second-time burning organic heat carrier combustion coal boiler according to claim 1 is characterized in that: body of heater is for double-deck, and internal layer is heat-insulation layer (7), and skin is rigidity skin (6).

6, second-time burning organic heat carrier combustion coal boiler according to claim 1, it is characterized in that: primary zone's upper wall surface is equipped with live body seal cover (12).

7, second-time burning organic heat carrier combustion coal boiler according to claim 1 is characterized in that: have firecracker input port (1) on the smoke pipe on the body of heater (2).