CN206094049U - Equipment takes place for CFB's flue gas - Google Patents

Equipment takes place for CFB's flue gas Download PDF

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Publication number
CN206094049U
CN206094049U CN201620987798.8U CN201620987798U CN206094049U CN 206094049 U CN206094049 U CN 206094049U CN 201620987798 U CN201620987798 U CN 201620987798U CN 206094049 U CN206094049 U CN 206094049U
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China
Prior art keywords
flue gas
burner hearth
equipment
cfb
rotary separator
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CN201620987798.8U
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Chinese (zh)
Inventor
蔡文钢
陈金火
郝小波
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Zigong Huaxi Energy Industry Co Ltd
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Zigong Huaxi Energy Industry Co Ltd
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Priority to CN201620987798.8U priority Critical patent/CN206094049U/en
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Abstract

The utility model discloses an equipment takes place for CFB's flue gas, including firing burning furnace thorax, adiabatic flue gas rotary separator, back shaft and returning charge ware, adiabatic flue gas rotary separator upper end is through the transition flue and fire burning furnace thorax upper end intercommunication, adiabatic flue gas rotary separator's lower extreme installation returning charge ware draws the burning furnace thorax that strile -backs with the solid particle thing of isolating, and horizontal gas pass and back shaft top intercommunication are passed through to the upper end. The beneficial effects of the utility model are that: adopt the uncombusted carbon granules separation of adiabatic flue gas rotary separator in with the high temperature flue gas to obtain clear high temperature flue gas, the burning furnace thorax second burner that strile -backs is carried with the uncombusted carbon granules to the returning charge ware, has improved the burnout degree of fuel and the combustion efficiency of CFB equipment.

Description

There is equipment in a kind of flue gas of CFB
Technical field
The utility model is related to a kind of flue gas of CFB and equipment occurs, particularly a kind of to produce gas using solid fuel ignition Body belongs to technical field of combustion equipment as the CFB equipment of technique medium.
Background technology
There is the occasion needed in a large number using hot gas as processing medium in domestic industry, therefore produce the CFB of gas(I.e. Recirculating fluidized bed)Equipment arises at the historic moment.
At present, the similar devices of domestic operation are all smaller, and its capacity is typically in below 20MW.Its type of furnace has:Chain furnace The forms such as row, coal-powder boiler, ebullated bed, bubbling bed.The equipment of traveling-grate stoker form, fire grate causes imperfect combustion because leaking coal, Heat loss is big, and the thermal efficiency is relatively low.The equipment of coal-powder boiler form, flying dust is difficult to collect, and flue gas quality is difficult to ensure that, and flouring technology Complexity, energy consumption is higher.The equipment of ebullated bed form, using heavy boiler setting, outside is built into common brick, the easy bulge of furnace wall, cracking With collapse, and furnace wall receives height limitation, general height to be less than 15m.The CFB equipment of bubbling bed form, its velocity of flue gas is low, bed Face area is big, it is difficult to maximize.
Utility model content
Goal of the invention of the present utility model is:For above-mentioned problem, there is provided a kind of flue gas of CFB sets It is standby, to meet requirement of engineering.
The technical solution adopted in the utility model is such:
There is equipment, including burner hearth, heat-insulating flue gas rotary separator, rear vertical shaft and returning charge in a kind of flue gas of CFB Device, the heat-insulating flue gas rotary separator upper end is connected by transition flue duct with burner hearth upper end, the heat-insulating flue gas The lower end of rotary separator is installed material returning device and the solid particulate matter isolated is led back into burner hearth, upper end by horizontal flue with Shaft top connection afterwards.
Preferably, the burner hearth is divided into from top to bottom isobaric air compartment, emulsion zone, dilute-phase zone, the returning charge High temperature dust and unburnt particulate matter are led back device the emulsion zone of burner hearth, and the emulsion zone is anterior to arrange Pneumatic feeding dress Put, the dilute-phase zone upper rear arranges the smoke outlet window connected with transition flue duct.
Preferably, the isobaric air compartment includes air compartment, air compartment top arranges air distribution plate and blast cap, air compartment bottom arrange into Air port and slag-drip opening.Air distribution plate and blast cap are installed, it is ensured that the aperture wind speed of all blast caps is essentially identical, favorably in isobaric air compartment It is uniformly distributed in the emulsion zone of burner hearth in fuel, it is ensured that thermo parameters method is reasonable in burner hearth.
Preferably, the heat-insulating flue gas rotary separator is divided into from top to bottom cone section, straight section and exhanst gas outlet section, institute State straight section sidepiece and the gas approach window connected with transition flue duct is set.Using heat-insulating flue gas rotary separator by solid particulate matter Separate with high-temperature flue gas, the high-temperature gas for cleaning can be obtained.
Preferably, the wall of the burner hearth and rear vertical shaft is divided into from inside to outside Fire and abrasion resistant material layer, absolutely Hot material layer, adiabator layer and metal parietal layer.Using this wall construction, abrasion of the flue gas to wall can be prevented effectively from, may be used also Reduce thermal loss.According to the change in temperature field in equipment, in different regions from the heat-insulation layer of different-thickness, avoid as far as possible Heat is distributed, the thermal efficiency overall so as to improve equipment.
Preferably, the combustion furnace bore wall higher slice arranges some airducts connected with its inside.Can be by airduct point Layer, in batches to fuel burner hearth inner ventilation absorb internal gas heat, so as to precise control burner hearth internal temperature, it is to avoid occur Coking phenomenon.Also the cleaning high-temperature gas that heat-insulating flue gas rotary separator is obtained can be reintroduced back to airduct, its heat is entered One step is utilized, so as to save fuel.
In sum, as a result of above-mentioned technical proposal, the beneficial effects of the utility model are:
1. the solid particulate matter in high-temperature flue gas is separated using heat-insulating flue gas rotary separator, so as to be cleaned High-temperature flue gas.
2. solid particulate matter is transmitted back to burner hearth and is burnt again by material returning device, and the after-flame degree and CFB that improve fuel sets Standby efficiency of combustion.
Description of the drawings
Fig. 1 is structure chart of the present utility model.
Fig. 2 is the structure chart of the burner hearth that 1 is labeled as in Fig. 1.
Fig. 3 is the structure chart of the heat-insulating flue gas rotary separator that 2 are labeled as in Fig. 1.
Fig. 4 is the structure chart of the isobaric air compartment that 11 are labeled as in Fig. 2.
Fig. 5 is that 1 burner hearth is labeled as in Fig. 1 and the backplate heavy boiler setting structure that 3 rear vertical shaft is adopted is labeled as Figure.
Fig. 6 is air-distribution device figure.
Mark in figure:1 is burner hearth, and 2 is heat-insulating flue gas rotary separator, and 3 is rear vertical shaft, and 4 is transition flue duct, 5 For horizontal flue, 6 is material returning device, and 11 are isobaric air compartment, and 12 is emulsion zone, and 13 is dilute-phase zone, and 14 is smoke outlet window, 15 gas Power charging gear, 21 is straight section, and 22 are cone section, and 23 is exhanst gas outlet section, and 111 is blast cap, and 112 is air distribution plate, and 113 is air compartment, 114 is slag-drip opening, and 115 is air inlet, and A is metal parietal layer, and B is heat-insulation layer, and C is heat insulation layer, and D is fire-resistant abrasion-proof layer, and 7 is wind Pipe.
Specific embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
Embodiment:
As shown in figure 1, a kind of CFB flue gas occur equipment, including burner hearth 1, heat-insulating flue gas rotary separator 2, Vertical shaft 3 and material returning device 6 afterwards, the upper end of heat-insulating flue gas rotary separator 2 is connected by transition flue duct 4 with the upper end of burner hearth 1 Logical, the lower end of the heat-insulating flue gas rotary separator 2 is installed material returning device 6 and the solid particulate matter isolated is led back into burner hearth 1, upper end is connected by horizontal flue 5 with the top of rear vertical shaft 3.
The burner hearth 1 is divided into from top to bottom isobaric air compartment 11, emulsion zone 12, dilute-phase zone 13, as shown in Fig. 2 High temperature dust and unburnt particulate matter are led back the material returning device 6 emulsion zone 13 of burner hearth 1, and the emulsion zone 13 is anterior Pneumatic Feeder 15 is set, and the rear portion of the dilute-phase zone 13 arranges the smoke outlet window 14 connected with transition flue duct 4.
The heat-insulating flue gas rotary separator 2 is divided into from top to bottom cone section 22, straight section 21 and exhanst gas outlet section 23, such as schemes Shown in 3, the sidepiece of the straight section 21 arranges the gas approach window 24 connected with transition flue duct 4.
The isobaric air compartment 11 includes air compartment 113, and the top of air compartment 113 arranges air distribution plate 112 and blast cap 111, under air compartment 113 Portion arranges air inlet 115 and slag-drip opening 114, as shown in Figure 4.
The wall of the burner hearth 1 and rear vertical shaft 3 is divided into from inside to outside Fire and abrasion resistant material layer D, heat-insulating material Layer C, adiabator layer B and metal parietal layer A, as shown in Figure 5.
The wall higher slice of the burner hearth 1 arranges some airducts 7 connected with its inside, as shown in Figure 6.

Claims (6)

1. there is equipment in a kind of flue gas of CFB, it is characterised in that:Including burner hearth(1), heat-insulating flue gas rotary separator (2), rear vertical shaft(3)And material returning device(6), the heat-insulating flue gas rotary separator(2)Upper end passes through transition flue duct(4)With burning Burner hearth(1)Upper end connects, the heat-insulating flue gas rotary separator(2)Lower end install material returning device(6)By the solid isolated Particulate matter leads back burner hearth(1), upper end passes through horizontal flue(5)With rear vertical shaft(3)Top connection.
2. there is equipment in a kind of flue gas of CFB according to claim 1, it is characterised in that:The burner hearth(1)Under To being above divided into isobaric air compartment(11), emulsion zone(12), dilute-phase zone(13), the material returning device(6)By high temperature dust and unburned Most particulate matter leads back burner hearth(1)Emulsion zone(13), the emulsion zone(13)Front portion arranges Pneumatic Feeder(15), The dilute-phase zone(13)Rear portion is arranged and transition flue duct(4)The smoke outlet window of connection(14).
3. there is equipment in a kind of flue gas of CFB according to claim 2, it is characterised in that:The isobaric air compartment(11)Bag Include air compartment(113), air compartment(113)Top arranges air distribution plate(112)And blast cap(111), air compartment(113)Bottom arranges air inlet (115)And slag-drip opening(114).
4. there is equipment in a kind of flue gas of CFB according to claim 1, it is characterised in that:The heat-insulating flue gas rotation Separator(2)It is divided into cone section from top to bottom(22), straight section(21)With exhanst gas outlet section(23), the straight section(21)Sidepiece arrange with Transition flue duct(4)The gas approach window of connection(24).
5. there is equipment in a kind of flue gas of CFB according to claim 1, it is characterised in that:The burner hearth(1)With it is rear Vertical shaft(3)Wall be divided into Fire and abrasion resistant material layer from inside to outside(D), insulation material layer(C), adiabator layer(B)With And metal parietal layer(A).
6. there is equipment in a kind of flue gas of CFB according to claim 1, it is characterised in that:The burner hearth(1)On wall Layering arranges some airducts connected with its inside(7).
CN201620987798.8U 2016-08-31 2016-08-31 Equipment takes place for CFB's flue gas Active CN206094049U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620987798.8U CN206094049U (en) 2016-08-31 2016-08-31 Equipment takes place for CFB's flue gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620987798.8U CN206094049U (en) 2016-08-31 2016-08-31 Equipment takes place for CFB's flue gas

Publications (1)

Publication Number Publication Date
CN206094049U true CN206094049U (en) 2017-04-12

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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106196031A (en) * 2016-08-31 2016-12-07 自贡华西能源工业有限公司 A kind of flue gas generation equipment of CFB

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106196031A (en) * 2016-08-31 2016-12-07 自贡华西能源工业有限公司 A kind of flue gas generation equipment of CFB

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