CN213132499U - A desulfurization dust pelletizing system for carbon industry - Google Patents
A desulfurization dust pelletizing system for carbon industry Download PDFInfo
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- CN213132499U CN213132499U CN202021388292.8U CN202021388292U CN213132499U CN 213132499 U CN213132499 U CN 213132499U CN 202021388292 U CN202021388292 U CN 202021388292U CN 213132499 U CN213132499 U CN 213132499U
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Abstract
The utility model relates to a flue gas desulfurization system field especially relates to a desulfurization dust pelletizing system for carbon industry includes dust collector and desulfurizing tower, dust collector includes: a cloth bag and a blowing air bag which are arranged in the cabinet body of the device; the desulfurization tower comprises a stirrer, an oxidation air pipe, a coupler, a synergistic ring, a plurality of spraying layers, a demister, an anode pipe and a cathode wire; by adopting the utility model, the bag in the dust removing device is matched with the blowing air bag to realize the dust removal of large particles; the optimization of the wet desulphurization device of the desulphurization tower further improves the flue gas treatment efficiency, reduces the particulate matter emission and reduces and prevents the generation of gypsum rain; the consumption of raw materials is reduced, so that the whole system can stably run.
Description
Technical Field
The utility model relates to a flue gas desulfurization system field especially relates to a desulfurization dust pelletizing system for carbon industry.
Background
The carbon product is an industrial raw material of aluminum and is mainly used for producing electrolytic aluminum. At present, the aluminum industry in China is rapidly developed, the yield of electrolytic aluminum in China accounts for 40% of the global yield in 2011, and the demand of carbon products is continuously increased. The calcination is the first step of carbon product production, and petroleum coke is used as a raw material and enters a calciner, and calcined coke is produced after high-temperature calcination. The burning of petroleum coke in the calcining furnace generates a large amount of flue gas, and the flue gas contains pollutants such as SO2, particulate matters and the like.
Many processes can be selected for desulfurization treatment of the flue gas of the calcining furnace, and the main processes are a soda process, a double-soda process and a limestone-gypsum process. The three processes are that the desulfurization solution is atomized by the spiral nozzle and reversely contacts with the flue gas cooled and entering the desulfurization tower, the gas phase and the liquid phase carry out sufficient mass transfer and heat transfer, and SO2 in the flue gas is absorbed and reacts with the desulfurization solution to generate sodium sulfite or calcium sulfite.
The limestone-gypsum method for desulfurization has been widely operated in the thermal power industry, but the limestone-gypsum method occupies less space in the carbon industry, and mainly considers that the sulfur content is high, the particulate matter content is high, the discharge temperature is high, the sulfur trioxide content in flue gas is mostly high due to the factors of raw materials in the carbon industry, and meanwhile, the limestone-gypsum method is easy to generate gypsum rain.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an optimize configuration, remove dust and remove desulfurization system of granule, wet flue gas desulfurization and wet-type electrostatic precipitator.
A desulfurization dust pelletizing system for carbon industry, includes dust collector and desulfurizing tower, dust collector includes: a cloth bag and a blowing air bag which are arranged in the cabinet body of the device; the desulfurization tower comprises a stirrer, an oxidation air pipe, a coupler, a synergistic ring, a plurality of spraying layers, a demister, an anode pipe and a cathode wire;
the dust removal device is communicated with the induced draft fan, and the induced draft fan is communicated with the lower end of the desulfurizing tower through the inlet flue; the stirrer and the oxidation air pipe are both arranged at the bottom end inside the tower body; the coupler is arranged above an inlet flue in the tower body, the plurality of equidistant spraying layers are arranged above the coupler, and synergy rings are arranged below the plurality of equidistant spraying layers; the demister is arranged above the spraying layer; the electric dust removal device consisting of the anode tube and the cathode wire is arranged inside the shell of the desulfurizing tower, and an external high-frequency power supply is connected with the cathode wire through an insulating box; the insulation box is arranged above the demister; the treated flue gas is finally discharged into the atmosphere through a chimney.
Further, the cloth bag is a cylindrical cloth bag.
Furthermore, an outlet expansion joint is arranged at the joint of the dust removal device and the draught fan, and an inlet flue expansion joint is arranged at the joint of the draught fan and the inlet flue.
Further, the distance between the coupler and the lowest spraying layer is 5 m.
Furthermore, each synergistic ring is 0.9m away from the corresponding spraying layer.
Furthermore, a demister cleaning spray head is arranged below the demister.
Furthermore, the anode tube adopts an inner tube diameter of 100-.
Furthermore, a rotational flow plate is arranged between the electric dust removal device and the chimney.
The utility model has the advantages that:
in the specific implementation process of the utility model, the dust removal device adopts a cloth bag dust removal process, so that most of larger particles can be removed under the condition that the cloth bag can occupy a very small area, and the spraying time and the spraying interval are changed by matching with a spraying air bag, so that most of particles can be continuously isolated; the flue gas with particles removed is introduced into the desulfurization tower through the inlet flue by the induced draft fan to carry out conventional limestone-gypsum desulfurization operation, the stirrer at the bottom can prevent the deposition of a slurry tank at the bottom of the desulfurization tower, and oxygen is blown by matching with the oxidation air pipe to accelerate the gypsum reaction and increase the desulfurization efficiency; the spraying layer is provided with 5 layers because the concentration of SO2 at the inlet of the carbon industry is 3000-5000mg/h and the inlet content is high, the liquid-gas ratio is designed to be 30:1, the circulation amount of the spraying liquid is increased, and a liquid film is formed with the synergistic ring below to increase the full reaction of the flue gas and the reaction liquid; the coupler is arranged above the inlet flue 5, so that inlet flue gas can be uniformly distributed, small-range flue gas disturbance is formed, the desulfurization efficiency is increased, and a part of particulate matters are further removed; demisting and drying the flue gas by a demister, and then removing dust by a wet-type electric dust removal process, wherein when an external high-frequency power supply discharges a cathode wire through an insulating box, dust in the flue gas is activated to generate charges and then the charges move into an anode tube, so that the dust in the flue gas is removed, the flow rate of the flue gas can be reduced, and the treatment standard of pollutants is further met;
by adopting the utility model, the bag in the dust removing device is matched with the blowing air bag to realize the dust removal of large particles; the optimization of the wet desulphurization device of the desulphurization tower further improves the flue gas treatment efficiency, reduces the particulate matter emission and reduces and prevents the generation of gypsum rain; the consumption of raw materials is reduced, so that the whole system can stably run.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
reference numerals: the device comprises a cloth bag 1, a gas bag 2, an air blowing bag 3, an outlet expansion joint 4, an induced draft fan 5, an inlet flue expansion joint 6, a stirrer 7, an oxidation air pipe 8, a coupler 9, a demister 10, a spray layer 11, a spray layer 12, a demister cleaning spray head 13, a demister 14, an anode pipe 14, a cathode wire 15, an insulation box 16, a swirl plate 17 and a chimney 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1, a desulfurization dust removal system for carbon industry comprises a dust removal device and a desulfurization tower, wherein the dust removal device comprises: a cloth bag 1 and an injection air bag 2 which are arranged in the cabinet body of the device; the desulfurization tower comprises a stirrer 7, an oxidation air pipe 8, a coupler 9, a synergistic ring 10, a plurality of spraying layers 11, a demister 13, an anode pipe 14 and a cathode wire 15;
the dust removal device is communicated with an induced draft fan 4, and the induced draft fan 4 is communicated with the lower end of the desulfurizing tower through an inlet flue 5; the stirrer 7 and the oxidation air pipe 8 are both arranged at the bottom end inside the tower body; the coupler 9 is arranged above the inlet flue 5 in the tower body, the plurality of equidistant spraying layers 11 are arranged above the coupler 9, and the synergy rings 10 are arranged below the plurality of equidistant spraying layers 11; the demister 13 is arranged above the spraying layer 11; the electric dust removal device consisting of the anode tube 14 and the cathode wire 15 is arranged inside the shell of the desulfurizing tower, and an external high-frequency power supply is connected with the cathode wire 15 through an insulating box 16; the insulation box 16 is arranged above the demister 13; the treated flue gas is finally discharged to the atmosphere through a stack 18.
In the specific implementation process of the utility model, the dust removal device adopts a cloth bag dust removal process, so that most of larger particles can be removed under the condition that the cloth bag 1 can occupy a very small area, the spraying time and the spraying interval are changed by matching with the spraying air bag 2, and most of particles can be continuously isolated; the flue gas with particles removed is introduced into the desulfurization tower through an inlet flue 5 by an induced draft fan 4 to carry out conventional limestone-gypsum desulfurization operation, a stirrer 7 at the bottom can prevent the deposition of a slurry tank at the bottom of the desulfurization tower, and oxygen is blown by matching with an oxidation air pipe 8 to accelerate the gypsum reaction and increase the desulfurization efficiency; the spraying layer 11 is provided with 5 layers, because the concentration of SO2 at the inlet of the carbon industry is 3000-5000mg/h, the inlet content is high, the liquid-gas ratio is designed to be 30:1, the spraying layer 11 is provided with 5 layers, the circulation amount of spraying liquid is increased, and a liquid film is formed with the synergistic ring 10 below to increase the full reaction of the flue gas and the reaction liquid; the coupler 9 is arranged above the inlet flue 5, so that inlet flue gas can be uniformly distributed, small-range flue gas disturbance is formed, the desulfurization efficiency is increased, and a part of particulate matters are further removed; demisting and drying the flue gas by a demister 13, and then removing dust by a wet-type electric dust removal process, wherein when an external high-frequency power supply discharges a cathode wire 15 through an insulating box 16, internal dust is activated to generate charges, and then the charges move into an anode tube 14, so that the dust in the flue gas is removed, the flow rate of the flue gas can be reduced, and the pollutant treatment standard is further met;
by adopting the utility model, the cloth bag 1 in the dust removing device is matched with the blowing air bag 2 to realize the dust removal of large particles; the optimization of the wet desulphurization device of the desulphurization tower further improves the flue gas treatment efficiency, reduces the particulate matter emission and reduces and prevents the generation of gypsum rain; the consumption of raw materials is reduced, so that the whole system can stably run.
Referring to fig. 1, further, a desulfurization dust removal system for carbon industry, the cloth bag 1 is a cylindrical cloth bag; the size of the cloth bag 1 is phi 165 multiplied by 6500.
In the embodiment, further, an outlet expansion joint 3 is arranged at the joint of the dust removal device and the draught fan 4, and an inlet flue expansion joint 6 is arranged at the joint of the draught fan 4 and the inlet flue 5;
the outlet expansion joint 3 can relieve the impact of high-temperature flue gas output from the dust removal device on the induced draft fan 4 and the inlet flue 5; the expansion joint 6 of the inlet flue can relieve the expansion of the pressurized air pressure and the high-temperature flue gas caused by the draught fan 4.
In this embodiment, further, the distance between the coupler 9 and the lowest spraying layer is 5 m; furthermore, each synergistic ring 10 is 0.9m away from the corresponding spraying layer 11;
the coupler 9 and the synergy ring 10 are both made of 2205 duplex stainless steel materials, and a grid plate made of 316L materials is further arranged below the coupler 9.
In this embodiment, a demister cleaning nozzle 12 is further disposed below the demister 13.
In the embodiment, further, the anode tube 14 adopts an inner tube diameter of 100 and 200, and the gas flow rate is kept at 1-1.5 m/s;
in this embodiment, further, a cyclone plate 17 is disposed between the electric dust removing device and the chimney 18; used for further dehydrating the flue gas and uniformly distributing and discharging the flue gas.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope and spirit of the invention as defined by the accompanying claims.
Claims (8)
1. A desulfurization dust pelletizing system for carbon industry, includes dust collector and desulfurizing tower, its characterized in that, dust collector includes: a cloth bag (1) and a blowing air bag (2) which are arranged in the cabinet body of the device; the desulfurization tower comprises a stirrer (7), an oxidation air pipe (8), a coupler (9), a synergistic ring (10), a plurality of spraying layers (11), a demister (13), an anode pipe (14) and a cathode wire (15);
the dust removal device is communicated with the induced draft fan (4), and the induced draft fan (4) is communicated with the lower end of the desulfurizing tower through the inlet flue (5); the stirrer (7) and the oxidation air pipe (8) are both arranged at the bottom end inside the tower body; the coupler (9) is arranged above an inlet flue (5) in the tower body, the plurality of equidistant spraying layers (11) are arranged above the coupler (9), and the synergy rings (10) are arranged below the plurality of equidistant spraying layers (11); the demister (13) is arranged above the spraying layer (11); an electric dust removal device consisting of the anode tube (14) and the cathode wire (15) is arranged inside the shell of the desulfurizing tower, and an external high-frequency power supply is connected with the cathode wire (15) through an insulating box (16); the insulation box (16) is arranged above the demister (13); the treated flue gas is finally discharged into the atmosphere through a chimney (18).
2. A desulfurization dust removal system for carbon industry as recited in claim 1, characterized in that said cloth bag (1) is a cylindrical cloth bag.
3. The desulfurization and dust removal system for the carbon industry according to claim 1, wherein an outlet expansion joint (3) is arranged at the joint of the dust removal device and the induced draft fan (4), and an inlet flue expansion joint (6) is arranged at the joint of the induced draft fan (4) and the inlet flue (5).
4. A desulfurization dust removal system for use in the carbon industry according to claim 1, wherein said coupler (9) is 5m from the lowermost spray level (11).
5. A desulfurization dust removal system for use in the carbon industry according to claim 1, wherein each efficiency ring (10) is spaced 0.9m from the corresponding spray level (11).
6. A desulfurization and dust removal system for carbon industry according to claim 1, characterized in that a demister cleaning nozzle (12) is disposed below the demister (13).
7. The desulfurization and dust removal system for the carbon industry as recited in claim 1, wherein the anode tube (14) has an internal tube diameter of 100 and 200, and the gas flow rate is maintained at 1-1.5 m/s.
8. The desulfurization and dust removal system for the carbon industry according to claim 1, wherein a cyclone plate (17) is arranged between the electric dust removal device and the chimney (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021388292.8U CN213132499U (en) | 2020-07-15 | 2020-07-15 | A desulfurization dust pelletizing system for carbon industry |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021388292.8U CN213132499U (en) | 2020-07-15 | 2020-07-15 | A desulfurization dust pelletizing system for carbon industry |
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| CN213132499U true CN213132499U (en) | 2021-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113332825A (en) * | 2021-08-06 | 2021-09-03 | 山东中航天业科技有限公司 | Steel slag treatment production line dust collector |
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2020
- 2020-07-15 CN CN202021388292.8U patent/CN213132499U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113332825A (en) * | 2021-08-06 | 2021-09-03 | 山东中航天业科技有限公司 | Steel slag treatment production line dust collector |
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