CN210533025U - Fuel feeding system of fluidized bed furnace - Google Patents
Fuel feeding system of fluidized bed furnace Download PDFInfo
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- CN210533025U CN210533025U CN201921357339.1U CN201921357339U CN210533025U CN 210533025 U CN210533025 U CN 210533025U CN 201921357339 U CN201921357339 U CN 201921357339U CN 210533025 U CN210533025 U CN 210533025U
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- fluidized bed
- bed furnace
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- furnace
- semi
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- 239000000446 fuel Substances 0.000 title claims abstract description 22
- 239000000571 coke Substances 0.000 claims abstract description 16
- 239000002893 slag Substances 0.000 claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims 8
- 238000000746 purification Methods 0.000 abstract description 20
- 238000002485 combustion reaction Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000003610 charcoal Substances 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 abstract description 2
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000005997 Calcium carbide Substances 0.000 description 10
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 10
- 239000000428 dust Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 229910014813 CaC2 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a fuel feeding system of fluidized bed furnace, it includes blue charcoal powder hopper, disk feeder, fluidized bed furnace, nitrogen gas source, purification ash hopper, arranges material pipe, pneumatic conveying pipe, roots's fan, air-blower, sediment storehouse and rotary kiln. Has the advantages that: the utility model has simple connection relation and easy realization; the purified ash and the semi-coke powder are used as fuel and conveyed to a fluidized bed furnace for combustion, so that the using amount of the semi-coke fuel is reduced, and the fuel cost is further reduced; meanwhile, the purification ash is recycled, and the purification ash after combustion forms particles which are discharged into a slag bin and finally used as a desulfurizer, so that the environmental pollution is avoided, and the potential safety hazard is eliminated.
Description
The technical field is as follows:
the utility model relates to a charge-in system, in particular to fuel charge-in system of fluidized bed furnace.
Background art:
the main raw materials of the calcium carbide are CaO and semi coke, and the following reduction reaction is carried out in a calcium carbide furnace: CaO +3C → CaC2+ CO, the semi coke is required to keep a certain granularity in the calcium carbide furnace, and can not be brought into powdery semi coke, so that CO gas generated after reduction can escape and is not focused in materials; simultaneously, the semi-coke entering the calcium carbide furnace has low moisture content, thereby avoiding or reducing the phenomenon that a large amount of moisture is electrolyzed to form H in the calcium carbide furnace2And O2Further, the gas in the calcium carbide furnace is prevented from exploding; therefore, semi-coke needs to be screened by a vibrating screen before entering the calcium carbide furnace, then is dried by the rotary kiln and finally is sent to the calcium carbide furnace, wherein the screened semi-coke powder is sent to a combustion chamber (namely a fluidized bed furnace) of the rotary kiln as a fuel for combustion, and high-temperature flue gas after combustion enters the rotary kiln to dry semi-coke particles; the dried semi-coke material is sent to a calcium carbide furnace for reduction reaction, and the purified ash generated in the reaction process is light, fine and strong in fluidity, high in temperature, easy to spontaneously combust when meeting air and high in dust content; at present, the treatment of calcium carbide furnace purification ash generally adopts a conventional stacking mode, but the following problems exist in the conventional stacking mode: the dust is serious in the loading, unloading and stacking processes, so that the surrounding environment is seriously polluted, and the occupied area of the stacking process is large; moreover, the carbon content of the purified ash is high, so the purified ash belongs to inflammable and explosive dust; the air is easy to generate spontaneous combustion when meeting air, and has larger potential safety hazard and the like.
The utility model has the following contents:
an object of the utility model is to provide a fuel charge-in system of fluidized bed furnace that the relation of connection is simple, has realized purifying grey reuse, and has reduced the fuel cost.
The utility model discloses by following technical scheme implement: a fuel feeding system of a fluidized bed furnace comprises a semi-coke powder hopper, a disc feeder, the fluidized bed furnace, a nitrogen source, a purified ash hopper, a discharging pipe, a pneumatic conveying pipe, a Roots blower, a slag bin and a rotary kiln; the discharge hole of the semi-coke powder hopper is positioned above the disc feeder, and the discharge hole of the disc feeder is communicated with the semi-coke feed inlet of the fluidized bed furnace; the nitrogen source is communicated with the air inlet of the purified ash hopper through a pipeline, the discharge pipe is arranged at the discharge outlet of the purified ash hopper, the first rotary valve is arranged on the discharge pipe, the side surface of the first rotary valve is fixedly provided with a variable frequency motor, and the output end of the variable frequency motor is in transmission connection with the input end of the first rotary valve; one end of the discharge pipe is communicated with a discharge hole of the purified ash hopper, the other end of the discharge pipe is communicated with a feed inlet of the pneumatic conveying pipe, an air inlet end of the pneumatic conveying pipe is communicated with an air outlet of the Roots blower, and a discharge hole of the pneumatic conveying pipe is communicated with a purified ash feed inlet of the fluidized bed furnace; the air inlet of the fluidized bed furnace is communicated with the air outlet of the air blower through a pipeline, the slag discharge port of the fluidized bed furnace is communicated with the slag inlet of the slag bin through a pipeline, and the air outlet of the fluidized bed furnace is communicated with the air inlet of the rotary kiln through a pipeline.
Further, still be provided with the second rotary valve on the row material pipe the fixed motor that decides frequently that is provided with in side of second rotary valve, decide the output of motor frequently with the input transmission of second rotary valve is connected.
Further, the semi-coke feeding port is arranged at the top of the fluidized bed furnace, the purification ash feeding port is arranged on the side wall of the fluidized bed furnace, and the distance between the purification ash feeding port and the bottom of the fluidized bed furnace is 290-310 mm.
Furthermore, the pneumatic conveying pipe at the purified ash feeding port inclines towards the bottom of the fluidized bed furnace.
Furthermore, the included angle between the pneumatic conveying pipe and the horizontal plane is 25-35 degrees.
The utility model has the advantages that: the utility model has simple connection relation and easy realization; the purified ash and the semi-coke powder are used as fuel and conveyed to a fluidized bed furnace for combustion, so that the using amount of the semi-coke fuel is reduced, and the fuel cost is further reduced; meanwhile, the purification ash is recycled, and the purification ash after combustion forms particles which are discharged into a slag bin and finally used as a desulfurizer, so that the environmental pollution is avoided, and the potential safety hazard is eliminated.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.
The specific implementation mode is as follows:
as shown in fig. 1, a fuel feeding system of a fluidized bed furnace comprises a semi-coke powder hopper 1, a disc feeder 2, a fluidized bed furnace 3, a nitrogen source 4, a purified ash hopper 5, a discharge pipe 6, a pneumatic conveying pipe 7, a roots blower 8, a blower 9, a slag bin 10 and a rotary kiln 11; the discharge port of the semi-coke powder hopper 1 is positioned above the disc feeder 2, and the discharge port of the disc feeder 2 is communicated with the semi-coke feed port of the fluidized bed furnace 3; the nitrogen source 4 is communicated with an air inlet of the ash purification hopper 5 through a pipeline, a discharge pipe 6 is arranged at a discharge outlet of the ash purification hopper 5, a first rotary valve 12 and a second rotary valve 13 are sequentially arranged on the discharge pipe 6, a variable frequency motor 14 is fixedly arranged on the side surface of the first rotary valve 12, the output end of the variable frequency motor 14 is in transmission connection with the input end of the first rotary valve 12, the rotating speed of the first rotary valve 12 can be changed by changing the power supply frequency of the variable frequency motor 14, and the adding amount of the purified ash is further changed; a fixed-frequency motor 15 is fixedly arranged on the side surface of the second rotary valve 13, the output end of the fixed-frequency motor 15 is in transmission connection with the input end of the second rotary valve 13, and the fixed-frequency motor 15 controls the second rotary valve 13 to rotate at a certain rotating speed so as to prevent air in the pneumatic conveying pipe 7 from reversely flowing into the ash purification hopper 5 and enable the ash purification in the hopper to generate spontaneous combustion; one end of a discharge pipe 6 is communicated with a discharge hole of a purified ash hopper 5, the other end of the discharge pipe 6 is communicated with a feed inlet of a pneumatic conveying pipe 7, an air inlet end of the pneumatic conveying pipe 7 is communicated with an air outlet of a Roots blower 8, and a discharge hole of the pneumatic conveying pipe 7 is communicated with a purified ash feed inlet of the fluidized bed furnace 3; an air inlet of the fluidized bed furnace 3 is communicated with an air outlet of the air blower 9 through a pipeline, a slag discharge port of the fluidized bed furnace 3 is communicated with a slag inlet of the slag bin 10 through a pipeline, and an air outlet of the fluidized bed furnace 3 is communicated with an air inlet of the rotary kiln 11 through a pipeline.
Blue charcoal feed inlet is seted up at the top of fluidized bed furnace 3, and the purification ash feed inlet is seted up on the lateral wall of fluidized bed furnace 3, and the distance between purification ash feed inlet and the 3 bottoms of fluidized bed furnace is 300mm, prevents that purification ash from spilling over from the gas outlet of fluidized bed furnace 3, and the pneumatic conveyor pipe 7 of purification ash feed inlet department is to 3 bottom slopes of fluidized bed furnace, and pneumatic conveyor pipe 7 is 30 with the contained angle of horizontal plane, helps improving the combustion efficiency of purification ash.
The working principle is as follows: by opening the variable frequency motor 14 and the fixed frequency motor 15, the first rotary valve 12 and the second rotary valve 13 are further opened, the purified ash in the purified ash hopper 5 falls into the pneumatic conveying pipe 7 through the discharging pipe 6, and the running Roots blower 8 conveys the purified ash falling into the pneumatic conveying pipe 7 into the fluidized bed furnace 3 for combustion; adding semi-coke powder in a semi-coke powder hopper 1 into a fluidized bed furnace 3 through a rotary disk feeder 2 for combustion; the blower 9 introduces air into the fluidized bed furnace 3 for combustion supporting, the burnt ash is discharged into the slag bin 10, and the burnt high-temperature flue gas enters the rotary kiln 11 for drying semi-coke particles; the consumption of the semi-coke fuel is reduced, so that the fuel cost is reduced; meanwhile, the purification ash is recycled, and the purification ash after combustion forms particles which are discharged into the slag bin 10 and finally used as a desulfurizer, so that the environmental pollution is avoided, and the potential safety hazard is eliminated; the utility model discloses the relation of connection is simple, easily realizes.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A fuel feeding system of a fluidized bed furnace is characterized by comprising a semi-coke powder hopper, a disk feeder, the fluidized bed furnace, a nitrogen source, a purified ash hopper, a discharging pipe, a pneumatic conveying pipe, a Roots blower, a slag bin and a rotary kiln; the discharge hole of the semi-coke powder hopper is positioned above the disc feeder, and the discharge hole of the disc feeder is communicated with the semi-coke feed inlet of the fluidized bed furnace; the nitrogen source is communicated with the air inlet of the purified ash hopper through a pipeline, the discharge pipe is arranged at the discharge outlet of the purified ash hopper, the first rotary valve is arranged on the discharge pipe, the side surface of the first rotary valve is fixedly provided with a variable frequency motor, and the output end of the variable frequency motor is in transmission connection with the input end of the first rotary valve; one end of the discharge pipe is communicated with a discharge hole of the purified ash hopper, the other end of the discharge pipe is communicated with a feed inlet of the pneumatic conveying pipe, an air inlet end of the pneumatic conveying pipe is communicated with an air outlet of the Roots blower, and a discharge hole of the pneumatic conveying pipe is communicated with a purified ash feed inlet of the fluidized bed furnace; the air inlet of the fluidized bed furnace is communicated with the air outlet of the air blower through a pipeline, the slag discharge port of the fluidized bed furnace is communicated with the slag inlet of the slag bin through a pipeline, and the air outlet of the fluidized bed furnace is communicated with the air inlet of the rotary kiln through a pipeline.
2. The fuel feeding system of the boiling furnace as claimed in claim 1, wherein a second rotary valve is further arranged on the discharging pipe, a fixed frequency motor is fixedly arranged on the side surface of the second rotary valve, and the output end of the fixed frequency motor is in transmission connection with the input end of the second rotary valve.
3. The fuel feeding system of the boiling furnace as claimed in claim 1 or 2, wherein the semi-coke feeding port is opened at the top of the boiling furnace, the purified ash feeding port is opened at the side wall of the boiling furnace, and the distance between the purified ash feeding port and the bottom of the boiling furnace is 290-310 mm.
4. The fuel feeding system of the boiling furnace as claimed in claim 3, wherein the pneumatic conveying pipe at the purified ash feeding port is inclined towards the bottom of the boiling furnace.
5. The fuel feeding system of the boiling furnace as claimed in claim 4, wherein the angle between the pneumatic conveying pipe and the horizontal plane is 25-35 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921357339.1U CN210533025U (en) | 2019-08-20 | 2019-08-20 | Fuel feeding system of fluidized bed furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921357339.1U CN210533025U (en) | 2019-08-20 | 2019-08-20 | Fuel feeding system of fluidized bed furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210533025U true CN210533025U (en) | 2020-05-15 |
Family
ID=70602182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921357339.1U Active CN210533025U (en) | 2019-08-20 | 2019-08-20 | Fuel feeding system of fluidized bed furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210533025U (en) |
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2019
- 2019-08-20 CN CN201921357339.1U patent/CN210533025U/en active Active
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