CN112191061A - Coke oven flue gas treatment system and method - Google Patents
Coke oven flue gas treatment system and method Download PDFInfo
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- CN112191061A CN112191061A CN202010879265.9A CN202010879265A CN112191061A CN 112191061 A CN112191061 A CN 112191061A CN 202010879265 A CN202010879265 A CN 202010879265A CN 112191061 A CN112191061 A CN 112191061A
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- 239000000571 coke Substances 0.000 title claims abstract description 110
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000003546 flue gas Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 105
- 239000000428 dust Substances 0.000 claims abstract description 82
- 238000001179 sorption measurement Methods 0.000 claims abstract description 57
- 239000004744 fabric Substances 0.000 claims abstract description 44
- 239000000779 smoke Substances 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 239000000843 powder Substances 0.000 claims description 29
- 238000005243 fluidization Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 5
- 239000011269 tar Substances 0.000 description 53
- 238000007664 blowing Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000011285 coke tar Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 125000001997 phenyl group Chemical class [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
- B01D53/10—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds with dispersed adsorbents
- B01D53/12—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds with dispersed adsorbents according to the "fluidised technique"
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a coke oven flue gas treatment system and a coke oven flue gas treatment method, which comprise a coke powder conveying device, a tar adsorption device and a cloth bag dust removal device, wherein the coke powder conveying device is communicated with the tar adsorption device, the tar adsorption device is communicated with the cloth bag dust removal device, the coke powder conveying device is used for conveying coke powder to the tar adsorption device, the tar adsorption device is used for mixing coke oven flue gas and coke powder, and the cloth bag dust removal device is used for filtering the coke oven flue gas and the coke powder. The invention can fully mix the coke oven smoke and the coke powder, and adsorb tar and harmful gas in the coke oven smoke through the coke powder, thereby effectively recovering the tar and the harmful gas in the coke oven smoke.
Description
Technical Field
The invention relates to the technical field of coke oven flue gas treatment, in particular to a coke oven flue gas treatment system and a coke oven flue gas treatment method.
Background
With the continuous improvement of the environmental protection requirement, the emission requirement of the particulate matters in the dust is stricter and stricter. To meet the requirement of ultra-low emission, further enhancement of dust control in flue gas is required for coke oven flue gas with complex composition. Because the coke oven smoke often contains more tar which has stronger viscosity, the tar is easy to attach to the surface of the cloth bag in the cloth bag dust remover, so that the resistance of the cloth bag dust remover is increased, the operation of the cloth bag dust remover is seriously influenced, and the subsequent coke oven smoke treatment process is easily influenced.
At present, a common process for treating tar in coke oven flue gas is an electric tar capturing method. After the method is used for long-time operation, foreign matters such as tar and the like are easy to adhere to the insulator, the insulator needs to be cleaned and maintained regularly, and the method is difficult to be used for treating the flue gas with large gas volume and cannot effectively remove the tar in the flue gas of the coke oven. In addition, other benzene series substances, H2S and other harmful gases exist in the coke oven smoke, the traditional bag-type dust remover can only treat the particles which can be trapped, and the traditional bag-type dust remover cannot handle the gaseous harmful substances.
Therefore, a new coke oven flue gas treatment system and method are urgently needed to effectively recover tar and harmful gases in the coke oven flue gas.
Disclosure of Invention
The invention aims to provide a coke oven flue gas treatment system and a coke oven flue gas treatment method, which aim to solve the problem that tar and harmful gas in coke oven flue gas cannot be effectively recovered by the conventional coke oven flue gas treatment system and method.
In order to solve the technical problem, the invention provides a coke oven flue gas treatment system which comprises a coke powder conveying device, a tar adsorption device and a cloth bag dust removal device, wherein the coke powder conveying device is communicated with the tar adsorption device, the tar adsorption device is communicated with the cloth bag dust removal device, the coke powder conveying device is used for conveying coke powder to the tar adsorption device, the tar adsorption device is used for mixing coke oven flue gas and coke powder, and the cloth bag dust removal device is used for filtering the coke oven flue gas and the coke powder.
Optionally, the coke powder conveying device includes a coke powder storage bin, a first rotary feeder, a powder feeding groove and a first fluidizing fan, the coke powder storage bin is communicated with one end of the first rotary feeder, the other end of the first rotary feeder is communicated with one end of the powder feeding groove, the other end of the powder feeding groove is communicated with the tar adsorbing device, an outlet of the first fluidizing fan is communicated with the powder feeding groove, the first rotary feeder is used for conveying the coke powder in the coke powder storage bin to the powder feeding groove, and the first fluidizing fan is used for blowing the coke powder in the powder feeding groove to the tar adsorbing device.
Optionally, the tar adsorption device comprises a mixing pipe, a venturi reactor and a reaction bin, one end of the mixing pipe is a coke oven flue gas inlet, the other end of the mixing pipe is communicated with an inlet of the venturi reactor, an outlet of the venturi reactor is communicated with an inlet of the reaction bin, an outlet of the reaction bin is communicated with the cloth bag dust removal device, and the mixing pipe is communicated with the powder feeding groove.
Optionally, the tar adsorption device includes a mixing pipe, a venturi reactor and a reaction bin, one end of the mixing pipe is a coke oven flue gas inlet, the other end of the mixing pipe is communicated with the inlet of the venturi reactor, the outlet of the venturi reactor is communicated with the inlet of the reaction bin, the outlet of the reaction bin is communicated with the cloth bag dust removal device, the mixing pipe is communicated with the powder feeding groove, wherein the outer diameters of the mixing pipe and the reaction bin are larger than the outer diameter of the venturi reactor.
Optionally, the venturi reactor includes outer tube and venturi, the outer tube includes first mixed section and second mixed section, venturi follows the axial setting of outer tube is in the second mixed section, the one end of first mixed section the other end intercommunication of hybrid tube, the other end of first mixed section the one end intercommunication of venturi, venturi's the other end with the entry intercommunication in reaction bin.
Optionally, venturi includes entrance, throat section and export section, the one end of entrance with the other end intercommunication of first mixed section, the other end of entrance with the one end intercommunication of throat section, the other end of throat section with the one end intercommunication of export section, the other end of export section with the entry intercommunication in reaction bin, the entrance is kept away from the external diameter of the one end of throat section is greater than the entrance is close to the external diameter of the one end of throat section, the export section is kept away from the external diameter of the one end of throat section is greater than the export section is close to the external diameter of the one end of throat section, the throat section certainly the one end of throat section is arrived the other end external diameter of throat section equals.
Optionally, the sack dust collector includes sack cleaner and draught fan, the sack cleaner with the export in reaction storehouse with the entry intercommunication of draught fan, the draught fan is used for the suction gas in the sack cleaner.
Optionally, the coke powder circulation fluidizing device is communicated with the cloth bag dust removal device and the tar adsorption device, and is used for collecting dust generated by the cloth bag dust removal device and conveying the dust to the tar adsorption device.
The invention also provides a coke oven flue gas treatment method of the coke oven flue gas treatment system, the coke oven flue gas treatment system comprises a coke powder conveying device, a tar adsorption device and a cloth bag dust removal device, the coke powder conveying device is communicated with the tar adsorption device, the tar adsorption device is communicated with the cloth bag dust removal device, and the coke oven flue gas treatment method comprises the following steps:
conveying coke powder to the tar adsorption device through the coke powder conveying device;
mixing the coke oven smoke and the coke powder through the tar adsorption device;
the coke oven smoke and the coke powder are filtered by a cloth bag dust collector.
Optionally, before the coke oven flue gas and the coke powder are mixed by the tar adsorption device, the coke oven flue gas is cut off to pre-spray the coke powder in the cloth bag dust removal device.
The coke oven flue gas treatment system and the coke oven flue gas treatment method provided by the invention have the following beneficial effects:
because the coke powder conveying device is used for conveying coke powder to the coke powder adsorption device, the coke powder conveying device is communicated with the coke powder adsorption device, the coke oven smoke and the coke powder are mixed by the coke powder adsorption device, the coke oven smoke and the coke powder can be fully mixed, and the coke powder can adsorb the coke tar and harmful gas in the coke oven smoke.
Drawings
FIG. 1 is a schematic structural diagram of a coke oven flue gas treatment system in an embodiment of the invention;
FIG. 2 is a top view of a venturi reactor in a coke oven flue gas treatment system in an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the venturi reactor of FIG. 2 taken along line A-A.
Description of reference numerals:
110-a coke powder storage bin; 120-a first rotary feeder; 130-powder feeding groove; 140-a first fluidization fan;
210-a mixing tube; 220-a venturi reactor; 221-outer sleeve; 222-a venturi tube; 223-inlet section, 224-throat section; 225-an outlet section; 226-a first mixing section; 227-a second mixing section; 230-a reaction bin;
320-a filtering bin; 321-a first filtering bin; 322-a second filtration compartment; 330-cloth bag; 340-an induced draft fan;
400-ash storehouse;
510-a circulation tank; 520-second rotary feeder.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a coke oven flue gas treatment system. Referring to fig. 1, fig. 1 is a schematic structural diagram of a coke oven flue gas treatment system in an embodiment of the invention, wherein the coke oven flue gas treatment system comprises a coke powder conveying device, a tar adsorption device and a bag-type dust removal device. The coke powder conveying device is communicated with the tar adsorption device, the tar adsorption device is communicated with the cloth bag dust removal device, the coke powder conveying device is used for conveying coke powder to the tar adsorption device, the tar adsorption device is used for mixing coke oven smoke and coke powder, and the cloth bag dust removal device is used for filtering the coke oven smoke and the coke powder.
Because the coke powder conveying device is used for conveying coke powder to the coke powder adsorption device, the coke powder conveying device is communicated with the coke powder adsorption device, the coke oven smoke and the coke powder are mixed by the coke powder adsorption device, the coke oven smoke and the coke powder can be fully mixed, and the coke powder can adsorb the coke tar and harmful gas in the coke oven smoke.
Wherein the dust is collected by a cloth bag dust collector when the coke oven smoke and the coke powder are filtered. The dust comprises coke powder which does not adsorb tar and/or adsorb harmful gas, coke powder which adsorbs tar and/or adsorbs harmful gas, particulate matters in the coke oven smoke, and the like. The coke powder can be collected by a coke discharging and dedusting system of a coke oven plant.
Specifically, referring to fig. 1, the coke powder conveying apparatus includes a coke powder storage bin 110, a first rotary feeder 120, a powder feeding chute 130, and a first fluidizing air blower 140. The coke powder storage bin 110 is communicated with one end of the first rotary feeder 120, the other end of the first rotary feeder 120 is communicated with one end of the powder feeding groove 130, the other end of the powder feeding groove 130 is communicated with the tar adsorption device, and the outlet of the first fluidizing fan 140 is communicated with the powder feeding groove 130. The first rotary feeder 120 is used for conveying the coke powder in the coke powder storage bin 110 to the powder feeding groove 130, and the first fluidizing fan 140 is used for blowing the coke powder in the powder feeding groove 130 to the tar adsorbing device.
Referring to fig. 1, the tar adsorption device includes a mixing pipe 210, a venturi reactor 220 and a reaction bin 230, one end of the mixing pipe 210 is a coke oven flue gas inlet, the other end of the mixing pipe 210 is communicated with the inlet of the venturi reactor 220, the outlet of the venturi reactor 220 is communicated with the inlet of the reaction bin 230, the outlet of the reaction bin 230 is communicated with the bag dust collector, and the mixing pipe 210 is communicated with the powder feeding groove 130. Wherein the outer diameters of the mixing pipe 210 and the reaction bin 230 are greater than the outer diameter of the venturi reactor 220.
Specifically, referring to fig. 2 and 3, fig. 2 is a top view of a venturi reactor 220 in a coke oven flue gas treatment system according to an embodiment of the present invention, fig. 3 is a cross-sectional view of the venturi reactor 220 along a line a-a in fig. 2, the venturi reactor 220 includes an outer sleeve 221 and a venturi tube 222, the outer sleeve 221 includes a first mixing section 226 and a second mixing section 227, the venturi tube 222 is disposed in the second mixing section 227 along an axial direction of the outer sleeve 221, one end of the first mixing section 226 communicates with the other end of the mixing pipe 210, the other end of the first mixing section 226 communicates with one end of the venturi tube 222, and the other end of the venturi tube 222 communicates with an inlet of the reaction bin 230. Wherein the first mixing section and the second mixing section are fixedly connected.
The venturi tube 222 comprises an inlet section 223, a throat section 224 and an outlet section 225, wherein one end of the inlet section 223 is communicated with the other end of the first mixing section 226, the other end of the inlet section 223 is communicated with one end of the throat section 224, the other end of the throat section 224 is communicated with one end of the outlet section 225, and the other end of the outlet section 225 is communicated with the inlet of the reaction bin 230. The outer diameter of the end of the inlet section 223 far away from the throat section 224 is larger than that of the end of the inlet section 223 near the throat section 224, the outer diameter of the end of the outlet section 225 far away from the throat section 224 is larger than that of the end of the outlet section 225 near the throat section 224, and the outer diameters of the throat sections 224 are equal from one end of the throat section 224 to the other end of the throat section 224. Therefore, the coke oven smoke and the coke powder can be conveniently and fully mixed.
As shown in fig. 2, the throat section 224 has a hollow cylindrical shape, and the inlet section 223 and the outlet section 225 have a hollow circular truncated cone shape. The throat section 224 is connected to the small ends of the inlet section 223 and the outlet section 225, respectively.
The number of venturi tubes 222 may be at least two, which may result in more uniform mixing of coke oven flue gas and coke fines compared to a venturi reactor 220 having only one venturi tube 222 as compared to the venturi reactor 220.
As shown in fig. 2, in the present embodiment, the number of the venturi tubes 222 is 7.
The tar adsorption device further comprises an air distribution plate, and the air distribution plate is arranged at one end of the mixing pipe 210. The powder feeding groove 130 is located between the air distribution plate and the venturi reactor 220 at the communication position of the mixing pipe 210, and the air distribution plate can uniformly mix the coke oven smoke and the coke powder.
Referring to fig. 1, the bag-type dust collector includes a bag-type dust collector and an induced draft fan 340. The bag-type dust collector is communicated with the outlet of the reaction bin 230 and the inlet of the induced draft fan 340, and the induced draft fan 340 is used for sucking gas in the bag-type dust collector.
Specifically, the bag-type dust collector comprises a filter bin 320 and a bag 330, the bag 330 divides the filter bin 320 into a first filter bin 321 and a second filter bin 322, the first filter bin 321 is communicated with an outlet of the reaction bin 230, and the second filter bin 322 is communicated with an inlet of the induced draft fan 340.
Preferably, the filter bin 320 is vertically arranged, so that ash falling is facilitated.
Referring to FIG. 1, the coke oven flue gas treatment system further includes an ash silo 400. The dust storehouse 400 is communicated with the first filtering bin 321 in the cloth bag dust removing device, and the dust storehouse 400 is used for collecting dust.
Referring to fig. 1, the coke oven flue gas treatment system further comprises a coke powder circulating and fluidizing device. The coke powder circulating and fluidizing device is communicated with the cloth bag dust removal device and the tar adsorption device. The coke powder circulating and fluidizing device is used for collecting dust generated by the cloth bag dust removal device and conveying the dust to the tar absorption device. Through setting up burnt powder circulation fluidizer, can realize the cyclic utilization of burnt powder, the utilization ratio of the burnt powder of improvement.
Specifically, the circulating fluidization device for the coke powder comprises a circulating groove 510 and a second rotary feeder 520, wherein one end of the second rotary feeder 520 is communicated with the first filter bin 321 in the bag-type dust collector, the other end of the second rotary feeder 520 is communicated with one end of the circulating groove 510, the other end of the circulating groove 510 is communicated with the mixing pipe 210 in the tar adsorption device and is positioned between the air distribution plate and the venturi reactor 220, the outlet of the first fluidization fan 140 is communicated with the circulating groove 510, the second feeder is used for conveying the dust in the first filter bin 321 into the circulating groove 510, and the first fluidization fan 140 is used for blowing the dust in the circulating groove 510 into the tar adsorption device. In other embodiments, a second fluidizing fan is further included, an outlet of the second fluidizing fan is communicated with the circulation tank 510, the second fluidizing fan is used for blowing the dust in the circulation tank 510 to the tar adsorption device, an outlet of the first fluidizing fan 140 is communicated with only the powder feeding tank 130, and the first fluidizing fan 140 is used for blowing only the coke powder in the powder feeding tank 130 to the tar adsorption device.
According to the ash falling condition of the bag-type dust collector, the coke powder amount in the powder feeding groove 130 can be adjusted through the first rotary feeder 120 so as to adjust the powder spraying amount, thereby ensuring that the coke powder fully adsorbs tar in the flue gas and fully utilizing the coke powder.
According to the ash falling condition of the bag-type dust collector, the amount of the coke powder in the circulating groove 510 can be adjusted through the second rotary feeder 520 so as to adjust the powder spraying amount, thereby ensuring that the coke powder fully adsorbs tar in the flue gas and fully utilizing the coke powder.
The coke oven flue gas treatment system comprises the following steps:
firstly, when the system is started, the coke oven smoke is cut off, the induced draft fan 340 is operated at a low frequency, the coke powder in the coke powder storage bin 110 is conveyed to the powder conveying groove 130 through the first rotary feeder 120, the coke powder in the powder conveying groove 130 is blown to the tar adsorption device through the first fluidized air blower 140, then the coke powder is conveyed to the cloth bag dust removal device under the action of the induced draft fan, and the coke powder is pre-sprayed on the cloth bag 330 in the cloth bag dust removal device, so that tar which is not completely adsorbed is prevented from being attached to the cloth bag 330 in later operation, the resistance of the cloth bag dust removal device is increased, the operation of the cloth bag dust removal device is seriously affected, and the subsequent coke oven smoke treatment process is easily affected.
Secondly, after a period of time, the coke oven gas enters the mixing pipe 210, the frequency of the induced draft fan 340 is adjusted, the coke oven gas and the coke powder entering the mixing pipe 210 start to be mixed, sequentially flow through the mixing pipe 210, the venturi reactor 220 and the reaction bin 230, and flow into the first filter bin 321 in the cloth bag 330 dust removal device, then the mixture of the coke oven gas and the coke powder is filtered through the cloth bag 330 and the dust is collected, the collected dust falls at the bottom of the first filter bin 321, and the gas in the mixture of the coke oven gas and the coke powder passes through the cloth bag 330 and flows to the subsequent process under the action of the induced draft fan 340.
Then, the part of the dust falling on the bottom of the first filter silo 321 flows into the dust storage 400, and the part of the dust is conveyed to the circulating tank 510 through the second feeder, and the dust in the circulating tank 510 is blown to the tar adsorbing device by the first fluidizing fan 140.
The embodiment also provides a coke oven flue gas treatment method of the coke oven flue gas treatment system, the coke oven flue gas treatment system comprises a coke powder conveying device, a tar adsorbing device and a cloth bag dust removing device, the coke powder conveying device is communicated with the tar adsorbing device, the tar adsorbing device is communicated with the cloth bag dust removing device, and the coke oven flue gas treatment method comprises the following steps:
firstly, conveying coke powder to the tar adsorption device through the coke powder conveying device;
secondly, mixing the coke oven smoke and the coke powder by the tar adsorption device;
and thirdly, filtering the coke oven smoke and the coke powder by using a cloth bag dust removal device.
Further, before the coke oven smoke and the coke powder are mixed by the tar adsorption device, the coke oven smoke is cut off so as to pre-spray the coke powder in the cloth bag dust removal device.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. The coke oven flue gas treatment system is characterized by comprising a coke powder conveying device, a tar adsorption device and a cloth bag dust removal device, wherein the coke powder conveying device is communicated with the tar adsorption device, the tar adsorption device is communicated with the cloth bag dust removal device, the coke powder conveying device is used for conveying coke powder to the tar adsorption device, the tar adsorption device is used for mixing coke oven flue gas and coke powder, and the cloth bag dust removal device is used for filtering the coke oven flue gas and the coke powder.
2. The coke oven flue gas treatment system of claim 1 wherein the coke breeze delivery apparatus comprises a coke breeze storage bin, a first rotary feeder, a breeze trough, and a first fluidization fan, the coke breeze storage bin is in communication with one end of the first rotary feeder, the other end of the first rotary feeder is in communication with one end of the breeze trough, the other end of the breeze trough is in communication with the tar adsorption apparatus, an outlet of the first fluidization fan is in communication with the breeze trough, the first rotary feeder is configured to deliver the coke breeze in the coke breeze storage bin into the breeze trough, and the first fluidization fan is configured to blow the coke breeze in the breeze trough into the tar adsorption apparatus.
3. The coke oven flue gas treatment system of claim 2, wherein the tar adsorption device comprises a mixing pipe, a venturi reactor and a reaction bin, one end of the mixing pipe is a coke oven flue gas inlet, the other end of the mixing pipe is communicated with the inlet of the venturi reactor, the outlet of the venturi reactor is communicated with the inlet of the reaction bin, the outlet of the reaction bin is communicated with the cloth bag dust removal device, and the mixing pipe is communicated with the powder feeding groove.
4. The coke oven flue gas treatment system of claim 3, wherein the tar adsorption device comprises a mixing pipe, a venturi reactor and a reaction bin, one end of the mixing pipe is a coke oven flue gas inlet, the other end of the mixing pipe is communicated with the inlet of the venturi reactor, the outlet of the venturi reactor is communicated with the inlet of the reaction bin, the outlet of the reaction bin is communicated with the cloth bag dust removal device, the mixing pipe is communicated with the powder feeding groove, and wherein the outer diameters of the mixing pipe and the reaction bin are larger than the outer diameter of the venturi reactor.
5. The coke oven flue gas treatment system of claim 4, wherein the venturi reactor comprises an outer sleeve and a venturi tube, the outer sleeve comprises a first mixing section and a second mixing section, the venturi tube is arranged in the second mixing section along the axial direction of the outer sleeve, one end of the first mixing section is communicated with the other end of the mixing tube, the other end of the first mixing section is communicated with one end of the venturi tube, and the other end of the venturi tube is communicated with the inlet of the reaction bin.
6. The coke oven flue gas treatment system of claim 5, wherein the venturi tube comprises an inlet section, a throat section and an outlet section, one end of the inlet section is communicated with the other end of the first mixing section, the other end of the inlet section is communicated with one end of the throat section, the other end of the throat section is communicated with one end of the outlet section, the other end of the outlet section is communicated with the inlet of the reaction bin, the outer diameter of one end of the inlet section, which is far away from the throat section, is larger than that of one end of the inlet section, which is close to the throat section, the outer diameter of one end of the outlet section, which is far away from the throat section, is larger than that of one end of the outlet section, which is close to the throat section, and the outer diameters of the throat section are equal from one end of the throat section to the other end.
7. The coke oven flue gas treatment system of claim 5, wherein the bag-type dust collector comprises a bag-type dust collector and an induced draft fan, the bag-type dust collector is communicated with an outlet of the reaction bin and an inlet of the induced draft fan, and the induced draft fan is used for sucking gas in the bag-type dust collector.
8. The coke oven flue gas treatment system of claim 5, further comprising a coke powder circulating fluidizing device in communication with the bag house dust collector and the tar adsorption device, the coke powder circulating fluidizing device being configured to collect dust generated by the bag house dust collector and transport the dust to the tar adsorption device.
9. The coke oven flue gas treatment method of the coke oven flue gas treatment system of any one of claims 1 to 8, wherein the coke oven flue gas treatment system comprises a coke breeze conveying device, a tar adsorbing device and a bag dust removing device, the coke breeze conveying device is communicated with the tar adsorbing device, the tar adsorbing device is communicated with the bag dust removing device, and wherein the coke oven flue gas treatment method comprises the following steps:
conveying coke powder to the tar adsorption device through the coke powder conveying device;
mixing the coke oven smoke and the coke powder through the tar adsorption device;
the coke oven smoke and the coke powder are filtered by a cloth bag dust collector.
10. The coke oven flue gas treatment method of claim 9, wherein the coke oven flue gas is disconnected to pre-spray coke fines in a bag house dust collector before mixing the coke oven flue gas and coke fines by the tar adsorption device.
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| CN202010879265.9A CN112191061A (en) | 2020-08-27 | 2020-08-27 | Coke oven flue gas treatment system and method |
| PCT/CN2021/099373 WO2022041926A1 (en) | 2020-08-27 | 2021-06-10 | Coke oven flue gas treatment system and method |
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| WO2022041926A1 (en) * | 2020-08-27 | 2022-03-03 | 中冶南方都市环保工程技术股份有限公司 | Coke oven flue gas treatment system and method |
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