CN112221301B - Activated carbon flue gas purification system and method thereof - Google Patents
Activated carbon flue gas purification system and method thereof Download PDFInfo
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- CN112221301B CN112221301B CN202011065957.6A CN202011065957A CN112221301B CN 112221301 B CN112221301 B CN 112221301B CN 202011065957 A CN202011065957 A CN 202011065957A CN 112221301 B CN112221301 B CN 112221301B
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- 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
- B01D53/04—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 stationary adsorbents
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- 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
- B01D53/04—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 stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01D53/04—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 stationary adsorbents
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Abstract
The invention discloses an activated carbon flue gas purification system and a method thereof, wherein the system at least comprises three activated carbon bins, a turbid flue gas inlet channel, a clean flue gas outlet channel, a regenerated flue gas inlet channel, a regenerated flue gas outlet channel, an activated carbon conveying belt, an activated carbon sieving machine and an activated carbon feeding trolley, wherein the bottom of each activated carbon bin is provided with a first rotary valve mechanism, and the top of each activated carbon bin is provided with a second rotary valve mechanism; the defeated material belt of active carbon is arranged and is used for transporting discharged active carbon to the feed inlet of active carbon screening machine in the below of discharge hopper, and the qualified active carbon of active carbon screening machine screening is transported to the charging hopper through active carbon pay-off dolly, the waste material that the active carbon screening machine was sieved is transported outward through the dolly. The active carbon flue gas purification system and the method thereof not only can solve the problem of long off-line replacement period of the fixed bed, but also can overcome the defects of funnel flow, flue gas short circuit and high active carbon consumption of a moving bed.
Description
Technical Field
The invention relates to the technical field of flue gas treatment, in particular to an activated carbon flue gas purification system and a method thereof.
Background
In the field of flue gas purification, the activated carbon treatment technology has the functions of desulfurization, denitrification and demercuration, and no secondary pollutants are generated, so that the activated carbon treatment technology is gradually the preferred technology of the flue gas purification process. Currently, the activated carbon flue gas purification process is divided into a fixed bed type activated carbon method and a moving bed type activated carbon method. The fixed bed type active carbon method has the main advantages that the gas flow field is stable, the gas-solid contact is uniform, and the purification efficiency is stable; the consumption of the active carbon is low, and the cost is low. The method has the defects that the off-line replacement period of the activated carbon bed layer is long, the requirements of continuous operation industry cannot be met, and the method has few application cases in large-scale flue gas purification at home and abroad. There are two main types of moving bed activated carbon methods, namely, a cross-flow technique represented by japan and a counter-flow technique represented by europe. Both of these techniques have applications in the purification of flue gases in industrial enterprises. These two techniques have the following drawbacks: firstly, the gas flow field is not uniform, and the active carbon bed layer circularly moves to easily form funnel flow, so that the local temperature of the active carbon is raised, and the carbon bed is ignited; secondly, the material layer is adopted for the active carbon feeding hole and the material discharging hole to move continuously, so that the short circuit of the smoke is very easy to occur, and the smoke is directly dissipated to the environment. Thirdly, the cylindrical activated carbon in the activated carbon bed layer has long moving path, frequent collision, serious activated carbon pulverization, high activated carbon consumption, high treatment cost and easy cause that the smoke dust of the smoke purification process is difficult to reach the standard.
Aiming at the defects of the existing activated carbon flue gas purification, a novel activated carbon flue gas purification process and a novel activated carbon flue gas purification method are needed to solve the problem of long off-line replacement period of a fixed bed and overcome the defects of funnel flow, flue gas short circuit and large consumption of activated carbon of a moving bed.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provide an activated carbon flue gas purification system and a method thereof, and the system and the method thereof not only can solve the problem of long off-line replacement period of a fixed bed, but also can overcome the defects of funnel flow, flue gas short circuit and large consumption of activated carbon of a moving bed.
In order to achieve the purpose, the invention provides an activated carbon flue gas purification system, which is characterized in that: the device at least comprises three activated carbon bins, a turbid flue gas inlet channel, a clean flue gas discharge channel, a regenerated flue gas inlet channel and a regenerated flue gas discharge channel, wherein the bottom of each activated carbon bin is provided with a first rotary valve mechanism, and the top of each activated carbon bin is provided with a second rotary valve mechanism;
each first rotary valve mechanism is provided with four ports, the first port of each first rotary valve mechanism is communicated with a turbid flue gas inlet channel, the second port of each first rotary valve mechanism is communicated with a regenerated flue gas discharge channel, the third port of each first rotary valve mechanism is communicated with the bottom of the activated carbon bin, and the fourth port of each first rotary valve mechanism is communicated with a discharge hopper;
each second rotary valve mechanism is provided with four interfaces, a first interface of each second rotary valve mechanism is communicated with a regeneration flue gas inlet channel, a second interface of each second rotary valve mechanism is communicated with a clean flue gas outlet channel, a third interface of each second rotary valve mechanism is communicated with the top of the activated carbon bin, and a fourth interface of each second rotary valve mechanism is communicated with the charging hopper.
Furtherly, it still includes defeated material belt, active carbon screening machine and the active carbon pay-off dolly of active carbon, the defeated material belt of active carbon is arranged and is used for transporting the feed inlet of active carbon screening machine with the exhaust active carbon in the below of discharge hopper, the qualified active carbon of active carbon screening machine screening is transported to the charging hopper through active carbon pay-off dolly, the waste material that the active carbon screening machine sieved out is through the dolly outward transportation.
Further, first rotary valve mechanism and second rotary valve mechanism structure are the same, all include rotatory case, rotary valve motor and stopper, the rotary valve motor is used for driving rotatory case and rotates.
Further, every the active carbon storehouse includes that the awl is fought, charcoal storehouse body and lower awl is fought, upward be provided with a plurality of active carbon evenly distributed ware on the awl is fought.
Further, active carbon evenly distributed ware includes rotatory guide plate and sets up the rotary rod in rotatory guide plate top, a plurality of flower hole has been seted up on the rotatory guide plate.
The invention also provides a method for purifying by using the activated carbon flue gas purification system, which comprises a flue gas purification process, and comprises the following specific steps:
1) The smoke is introduced from a turbid smoke inlet channel, the first rotary valve mechanism rotates the rotary valve core to an adsorption state under the action of the rotary valve motor, the smoke enters the activated carbon bin from the first rotary valve mechanism, passes through the lower cone hopper, the carbon bin body and the upper cone hopper of the activated carbon bin, and is subjected to adsorption purification treatment by activated carbon in the activated carbon bin;
2) The flue gas after purifying gets into the second rotary valve mechanism at activated carbon storehouse top, and second rotary valve mechanism is under the effect of rotary valve motor, and rotatory to the adsorption state of rotary valve core, the flue gas after the purification discharges to the chimney through clean flue gas discharge passage, accomplishes flue gas purification.
Further, the method also comprises an activated carbon regeneration process, and the specific steps are as follows:
1) The regeneration flue gas enters through the regeneration flue gas inlet channel, the second rotary valve mechanism rotates the rotary valve core to a regeneration state under the action of the rotary valve motor, the regeneration flue gas enters the activated carbon bin to be regenerated through the second rotary valve mechanism, and the regeneration flue gas regenerates the activated carbon with saturated adsorption through the upper cone hopper, the carbon bin body and the lower cone hopper;
2) The flue gas after regeneration gets into first rotary valve mechanism, and first rotary valve mechanism is under rotary valve motor's effect, and rotatory to the regeneration state of rotatory case, and the flue gas after the regeneration sends into regeneration flue gas treatment system through regeneration flue gas discharge passage, accomplishes the active carbon regeneration.
Further, the method also comprises an active carbon filling process, and the specific steps are as follows:
1) A second rotary valve mechanism at the top of the activated carbon bin to be filled rotates the rotary valve core to a material conveying state under the action of a rotary valve motor, and a first rotary valve mechanism at the bottom of the activated carbon bin rotates the rotary valve core to a locking state under the action of the rotary valve motor;
2) The active carbon falls down by the hopper at top, gets into the active carbon storehouse through the second rotary valve mechanism at top, and when the active carbon unloading, the impact force of the whereabouts of active carbon drove the rotatory guide plate rotation of active carbon evenly distributed ware, under the distribution effect in flower hole, during the active carbon storehouse was evenly spread to the active carbon, accomplished the active carbon and filled.
Still further, the method also comprises an activated carbon unloading process, and the method comprises the following specific steps:
1) A second rotary valve mechanism at the top of the activated carbon bin to be unloaded rotates the rotary valve core to a locking state under the action of a rotary valve motor, and a first rotary valve mechanism at the bottom of the activated carbon bin to be unloaded rotates the rotary valve core to a material conveying state under the action of the rotary valve motor;
2) And under the action of the gravity of the activated carbon, the activated carbon falls from the activated carbon bin to the discharge hopper, and the activated carbon falls from the discharge hopper to the activated carbon conveying belt to finish the activated carbon discharging.
Furthermore, the method also comprises an activated carbon screening process, and the specific steps are as follows:
1) The activated carbon conveying belt conveys the activated carbon discharged from the discharge hopper to an activated carbon screening machine, the activated carbon screening machine screens out the crushed activated carbon, and the qualified screened activated carbon is conveyed to a charging hopper at the top of an activated carbon bin by an activated carbon feeding trolley and recycled;
2) And conveying the waste materials screened out by the activated carbon screening machine to a pulverized activated carbon treatment workshop by a trolley to complete activated carbon screening.
Compared with the prior art, the invention has the following advantages:
firstly, the invention realizes the on-line automatic loading and unloading of the activated carbon bed by designing the rotary valve mechanism, greatly reduces the operation time for replacing the carbon bed and improves the industrial application prospect of the flue gas purification of the activated carbon of the fixed bed.
Secondly, each activated carbon bin of the invention can independently realize the processes of flue gas purification, activated carbon regeneration, activated carbon filling, activated carbon unloading and activated carbon screening, and the sequencing batch reaction process of each carbon bin, namely, the operation is carried out in a circulation mode of purification-regeneration-unloading-screening-filling-purification.
Thirdly, the invention adopts an intermittent operation mode that the activated carbon bed layer is relatively fixed, realizes the uniformity of flue gas flow and effectively controls the funnel flow.
Fourthly, the invention reduces the contact with air flow when the activated carbon layer is replaced, reduces the friction between activated carbon bed layers, reduces the pulverization rate of the activated carbon and directly reduces the consumption of the activated carbon.
Fifthly, the rotary valve mechanism is adopted to replace the valve control unit on each pipeline, so that the short circuit of the smoke is effectively avoided.
Drawings
FIG. 1 is a schematic diagram of an activated carbon flue gas purification system;
FIG. 2 is a schematic structural diagram of an activated carbon uniform distributor;
FIG. 3 is a schematic diagram of the first rotary valve mechanism in an adsorption state;
FIG. 4 is a schematic structural view of the second rotary valve mechanism in an adsorption state;
FIG. 5 is a schematic configuration of the first rotary valve mechanism in a regeneration state;
FIG. 6 is a schematic structural view of the second rotary valve mechanism in a regeneration state;
FIG. 7 is a schematic view of the first rotary valve mechanism in a feeding position;
FIG. 8 is a schematic structural view of the second rotary valve mechanism in a feeding state;
FIG. 9 is a schematic structural view of the first rotary valve mechanism in a locked state;
FIG. 10 is a schematic view of the second rotary valve mechanism in a locked state;
in the figure: an activated carbon bin 1 (an upper cone hopper 1.1, a carbon bin body 1.2 and a lower cone hopper 1.3), a turbid flue gas inlet channel 2, a clean flue gas discharge channel 3, a regenerated flue gas inlet channel 4, a regenerated flue gas discharge channel 5, a first rotary valve mechanism 6, a second rotary valve mechanism 7, a discharge hopper 8, a charging hopper 9, an activated carbon conveying belt 10, an activated carbon screening machine 11, a rotary valve core 12, a rotary valve motor 13, a limiter 14, an activated carbon uniform distributor 15 (a rotary guide plate 15.1, a rotary rod 15.2 and a flower hole 15.3), an activated carbon feeding trolley 16, a trolley 17, an activated carbon first partition plate 18, an activated carbon second partition plate 19, an activated carbon channel 20, activated carbon 21 and a blind plate inspection hole 22.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the embodiments, but they are not intended to limit the present invention and are only examples. While the advantages of the invention will be apparent and readily appreciated by the description.
As shown in fig. 1, the activated carbon flue gas purification system of the present invention at least comprises three activated carbon bins 1, a turbid flue gas inlet channel 2, a purified flue gas outlet channel 3, a regenerated flue gas inlet channel 4, a regenerated flue gas outlet channel 5, an activated carbon delivery belt 10, an activated carbon sieving machine 11 and an activated carbon delivery trolley 16, wherein a first rotary valve mechanism 6 is arranged at the bottom of each activated carbon bin 1, and a second rotary valve mechanism 7 is arranged at the top of each activated carbon bin 1; the three activated carbon bins are connected in parallel to realize three functions of flue gas purification, activated carbon regeneration and activated carbon replacement, and each activated carbon bin can independently realize the three functions, so that the periodic cycle of flue gas purification, adsorption and regeneration is ensured. The first rotary valve mechanism 6 is a core component connected with the bottom of the activated carbon bin, and the action of the first rotary valve mechanism realizes the unloading of the activated carbon, the introduction of turbid flue gas and the emission of regenerated flue gas. The flue gas at the inlet of the activated carbon adopts pre-sprayed ammonium ammonia or non-sprayed ammonium ammonia to respectively realize the functions of activated carbon denitration and desulfurization. The second rotary valve mechanism 7 is a core component connected with the top of the activated carbon bin, and the action of the second rotary valve mechanism realizes activated carbon filling, purified flue gas discharge and regenerated flue gas inlet.
In the above technical solution, each first rotary valve mechanism 6 has four ports, the first port of the first rotary valve mechanism 6 is communicated with the turbid flue gas inlet channel 2, the second port of the first rotary valve mechanism 6 is communicated with the regenerated flue gas discharge channel 5, the third port of the first rotary valve mechanism 6 is communicated with the bottom of the activated carbon bin 1, and the fourth port of the first rotary valve mechanism 6 is communicated with the discharge hopper 8; every second rotary valve mechanism 7 has four interfaces, the first interface and the regeneration flue gas admission passage 4 intercommunication of second rotary valve mechanism 7, the second interface and the clean flue gas discharge passage 3 intercommunication of second rotary valve mechanism 7, the third interface and the top of activated carbon bin 1 intercommunication of second rotary valve mechanism 7, the fourth interface and the charging hopper 9 intercommunication of second rotary valve mechanism 7.
In the technical scheme, the activated carbon conveying belt 10 is arranged below the discharge hopper 8 and used for conveying discharged activated carbon to the feed inlet of the activated carbon screening machine 11, the activated carbon screening machine 11 screens qualified activated carbon and conveys the qualified activated carbon to the charging hopper 9 through the activated carbon feeding trolley 16, and waste materials screened by the activated carbon screening machine 11 are conveyed outside through the trolley 17.
In the above technical solution, the first rotary valve mechanism 6 and the second rotary valve mechanism 7 have the same structure, and both include a rotary valve element 12, a rotary valve motor 13 and a stopper 14, and the rotary valve motor 13 is used for driving the rotary valve element 12 to rotate. Every activated carbon bin 1 includes awl fill 1.1, charcoal storehouse body 1.2 and lower awl fill 1.3 on going up, be provided with a plurality of active carbon evenly distributed ware 15 on the awl fill 1.1. The rotary valve core 12 is a solid cylinder with a single air passage cut out, and the sealing between the outer walls of the rotary valve core is graphite or tetrafluoro sealing. The method is characterized in that a first active carbon partition plate 18 and a second active carbon partition plate 19 are respectively arranged on a turbid flue gas inlet channel 2, a purified flue gas outlet channel 3, a regenerated flue gas inlet channel 4 and a regenerated flue gas outlet channel 5 of a flue gas purification channel, and no active carbon partition plate is arranged on other channels and is used for preventing active carbon from entering corresponding flues. In order to facilitate the maintenance of the rotary valve core, corresponding cut-off electromagnetic valves can be arranged on the turbid flue gas inlet channel 2, the clean flue gas exhaust channel 3, the regeneration flue gas inlet channel 4 and the regeneration flue gas exhaust channel 5.
As shown in fig. 2, the activated carbon uniform distributor 15 includes a rotating guide plate 15.1 and a rotating rod 15.2 disposed above the rotating guide plate 15.1, and the rotating guide plate 15.1 is provided with a plurality of flower holes 15.3.
The invention also provides a purification method by using the activated carbon flue gas purification system, each activated carbon bin can independently realize flue gas purification, activated carbon regeneration, activated carbon filling, activated carbon unloading and activated carbon screening processes, each activated carbon bin carries out a sequencing batch reaction process, namely, a circulation mode of purification-regeneration-unloading-screening-filling-purification runs, and the flue gas purification process specifically comprises the following steps:
1) The flue gas is introduced from the turbid flue gas inlet channel 2, the first rotary valve mechanism 6 rotates the rotary valve core to an adsorption state (as shown in figure 3) under the action of the rotary valve motor, the flue gas enters the activated carbon bin 1 from the first rotary valve mechanism 6, passes through the lower cone hopper 1.3, the carbon bin body 1.2 and the upper cone hopper 1.1 of the activated carbon bin 1, and is subjected to adsorption purification treatment by activated carbon in the activated carbon bin 1;
2) The purified flue gas enters a second rotary valve mechanism 7 at the top of the activated carbon bin 1, the second rotary valve mechanism 7 rotates the rotary valve core to an adsorption state (as shown in figure 4) under the action of the rotary valve motor, and the purified flue gas is discharged to a chimney through the purified flue gas discharge channel 3 to complete flue gas purification.
The method also comprises an activated carbon regeneration process, and the specific steps are as follows:
1) The regenerated flue gas enters through a regenerated flue gas inlet channel 4, a second rotary valve mechanism 7 rotates a rotary valve core to a regeneration state (as shown in figure 6) under the action of a rotary valve motor, the regenerated flue gas enters into an activated carbon bin 1 to be regenerated through the second rotary valve mechanism 7, and the regenerated flue gas regenerates the activated carbon with saturated adsorption through an upper cone hopper 1.1, a carbon bin body 1.2 and a lower cone hopper 1.3;
2) The regenerated flue gas enters a first rotary valve mechanism 6, the rotary valve core is rotated to a regeneration state (as shown in figure 5) by the first rotary valve mechanism 6 under the action of a rotary valve motor, and the regenerated flue gas is sent to a regenerated flue gas treatment system through a regenerated flue gas discharge channel 5 to complete activated carbon regeneration.
The method also comprises an active carbon filling process, and the specific steps are as follows:
1) The second rotary valve mechanism 7 at the top of the activated carbon bin 1 to be filled rotates the rotary valve core to a material conveying state (as shown in figure 8) under the action of the rotary valve motor, and the first rotary valve mechanism 6 at the bottom of the activated carbon bin rotates the rotary valve core to a locking state (as shown in figure 9) under the action of the rotary valve motor;
2) The active carbon falls down from the charging hopper 9 at the top and enters the active carbon bin 1 through the second rotary valve mechanism 7 at the top, when the active carbon is discharged, the impact force of the falling active carbon drives the rotary guide plate 15.1 of the active carbon uniform distributor 15 to rotate, and under the distribution effect of the flower holes 15.3, the active carbon is uniformly paved into the active carbon bin to finish the active carbon filling.
The method also comprises an active carbon unloading process, and the specific steps are as follows:
1) The second rotary valve mechanism 7 at the top of the activated carbon bin 1 to be unloaded rotates the rotary valve core to a locking state (as shown in figure 10) under the action of the rotary valve motor, and the first rotary valve mechanism 6 at the bottom of the activated carbon bin 1 to be unloaded rotates the rotary valve core to a material conveying state (as shown in figure 7) under the action of the rotary valve motor;
2) Under the action of the gravity of the activated carbon, the activated carbon falls from the activated carbon bin 1 to the discharge hopper 8, and the activated carbon falls from the discharge hopper 8 to the activated carbon conveying belt 10, so that the activated carbon discharging is completed.
The method also comprises an active carbon screening process, and the specific steps are as follows:
1) The activated carbon discharged from the discharge hopper 8 is conveyed to an activated carbon screening machine 11 by an activated carbon conveying belt 10, the crushed activated carbon is screened out by the activated carbon screening machine 11, and the qualified screened activated carbon is conveyed to a charging hopper 9 at the top of an activated carbon bin 1 by an activated carbon feeding trolley 16 for recycling;
2) The waste materials screened by the activated carbon screening machine 11 are sent to a powdered activated carbon treatment workshop by a trolley 17, and the activated carbon screening is completed.
In the embodiment, the device consists of three activated carbon bins and works in an intermittent purification-regeneration-unloading-screening-loading-purification mode. The specific parameters are as follows: the diameter of the charging hopper of the active carbon is 11cm, and the height of the charging hopper is 16cm. The active carbon is coconut shell active carbon with the median diameter of 5 mm. The diameter of the second rotary valve mechanism is 5cm, the height of the second rotary valve mechanism is 4cm, the diameter of the flue gas pipe is 2cm, and the second rotary valve mechanism is manually rotated to a corresponding state. The activated carbon bin adopts a conical hopper with a top and a bottom and a middle cylinder. The upper cone bucket and the lower cone bucket are the same, the diameter of the cone is 20cm, the height of the cone is 16cm, the diameter of the cylinder is 20cm, and the height of the cylinder is 45cm. The filling height of the activated carbon is 45cm. The diameter of the active carbon bin is 11cm, and the height of the active carbon bin is 16cm. The first rotary valve mechanism is 5cm in diameter, 4cm in height and 2cm in flue gas pipe diameter, and is manually rotated to a corresponding state. The turbid flue gas adopts a laboratory gas distribution mode, and adopts nitrogen and SO 2 By way of mixing, gas mixture SO 2 The concentration was 200mg/Nm3 and the gas flow rate was 2L/min. Continuously running for 8h, and discharging SO 2 The concentration was stable at less than 10mg. The rotary valve is manually rotated to a regeneration state, steam generated by a steam generator is introduced, the steam pressure is 1.2Mpa, and after 1h of regeneration, the sulfur capacity of the activated carbon is recovered to be more than 98%.
The above description is only an embodiment of the present invention, and it should be noted that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention, and the rest that is not described in detail is the prior art.
Claims (6)
1. The utility model provides an active carbon gas cleaning system which characterized in that: the device at least comprises three activated carbon bins (1), a turbid flue gas inlet channel (2), a clean flue gas discharge channel (3), a regenerated flue gas inlet channel (4) and a regenerated flue gas discharge channel (5), wherein a first rotary valve mechanism (6) is arranged at the bottom of each activated carbon bin (1), and a second rotary valve mechanism (7) is arranged at the top of each activated carbon bin (1);
each first rotary valve mechanism (6) is provided with four ports, the first port of each first rotary valve mechanism (6) is communicated with the turbid flue gas inlet channel (2), the second port of each first rotary valve mechanism (6) is communicated with the regenerated flue gas discharge channel (5), the third port of each first rotary valve mechanism (6) is communicated with the bottom of the activated carbon bin (1), and the fourth port of each first rotary valve mechanism (6) is communicated with the discharge hopper (8);
each second rotary valve mechanism (7) is provided with four interfaces, a first interface of each second rotary valve mechanism (7) is communicated with the regeneration flue gas inlet channel (4), a second interface of each second rotary valve mechanism (7) is communicated with the clean flue gas discharge channel (3), a third interface of each second rotary valve mechanism (7) is communicated with the top of the activated carbon bin (1), and a fourth interface of each second rotary valve mechanism (7) is communicated with the charging hopper (9);
the device is characterized by further comprising an active carbon conveying belt (10), an active carbon screening machine (11) and an active carbon feeding trolley (16), wherein the active carbon conveying belt (10) is arranged below the discharge hopper (8) and used for conveying discharged active carbon to a feed inlet of the active carbon screening machine (11), the active carbon screening machine (11) screens qualified active carbon and conveys the qualified active carbon to a charging hopper (9) through the active carbon feeding trolley (16), and waste materials screened by the active carbon screening machine (11) are conveyed outside through the trolley (17);
the first rotary valve mechanism (6) and the second rotary valve mechanism (7) are identical in structure and respectively comprise a rotary valve core (12), a rotary valve motor (13) and a limiter (14), and the rotary valve motor (13) is used for driving the rotary valve core (12) to rotate;
each activated carbon bin (1) comprises an upper conical hopper (1.1), a carbon bin body (1.2) and a lower conical hopper (1.3), and a plurality of activated carbon uniform distributors (15) are arranged on the upper conical hopper (1.1);
activated carbon evenly distributed ware (15) are including rotatory guide plate (15.1) and setting up rotary rod (15.2) in rotatory guide plate (15.1) top, a plurality of flower hole (15.3) have been seted up on rotatory guide plate (15.1).
2. A method for purifying by using the activated carbon flue gas purification system of claim 1, which is characterized in that: comprises a flue gas purification process, and comprises the following specific steps:
1) flue gas is introduced from a turbid flue gas inlet channel (2), a first rotary valve mechanism (6) rotates a rotary valve core to an adsorption state under the action of a rotary valve motor, the flue gas enters an activated carbon bin (1) from the first rotary valve mechanism (6), and the flue gas is subjected to adsorption purification treatment through activated carbon in the activated carbon bin (1) through a lower cone hopper (1.3), a carbon bin body (1.2) and an upper cone hopper (1.1) of the activated carbon bin (1);
2) The flue gas after purification gets into second rotary valve mechanism (7) at activated carbon storehouse (1) top, and second rotary valve mechanism (7) are under the effect of rotary valve motor, and rotatory to the adsorption state of rotatory case, and the flue gas after the purification discharges to the chimney through clean flue gas discharge passage (3), accomplishes gas cleaning.
3. The method of claim 2, wherein: the method also comprises an activated carbon regeneration process, and the specific steps are as follows:
1) regenerated flue gas enters through a regenerated flue gas inlet channel (4), a second rotary valve mechanism (7) rotates a rotary valve core to a regeneration state under the action of a rotary valve motor, the regenerated flue gas enters an activated carbon bin (1) to be regenerated through the second rotary valve mechanism (7), and the regenerated flue gas regenerates the activated carbon with saturated adsorption through an upper cone hopper (1.1), a carbon bin body (1.2) and a lower cone hopper (1.3);
2) The flue gas after regeneration gets into first rotary valve mechanism (6), and first rotary valve mechanism (6) are under the effect of rotary valve motor, and rotatory to the regeneration state of rotatory case, and the flue gas after the regeneration sends into regeneration flue gas treatment system through regeneration flue gas discharge passage (5), accomplishes the active carbon regeneration.
4. The method of claim 3, wherein: the method also comprises an active carbon filling process, and the specific steps are as follows:
1) A second rotary valve mechanism (7) at the top of the activated carbon bin (1) to be filled rotates the rotary valve core to a material conveying state under the action of a rotary valve motor, and a first rotary valve mechanism (6) at the bottom of the activated carbon bin rotates the rotary valve core to a locking state under the action of the rotary valve motor;
2) The active carbon falls down from a charging hopper (9) at the top and enters an active carbon bin (1) through a second rotary valve mechanism (7) at the top, when the active carbon is discharged, the falling impact force of the active carbon drives a rotary guide plate (15.1) of an active carbon uniform distributor (15) to rotate, and the active carbon is uniformly paved into the active carbon bin under the distribution effect of flower holes (15.3) to finish the active carbon filling.
5. The method of claim 4, wherein: the method also comprises an activated carbon unloading process, and comprises the following specific steps:
1) A second rotary valve mechanism (7) at the top of the activated carbon bin (1) to be unloaded rotates the rotary valve core to a locking state under the action of a rotary valve motor, and a first rotary valve mechanism (6) at the bottom of the activated carbon bin (1) to be unloaded rotates the rotary valve core to a material conveying state under the action of the rotary valve motor;
2) Under the action of the gravity of the activated carbon, the activated carbon falls from the activated carbon bin (1) to the discharge hopper (8), and the activated carbon falls from the discharge hopper (8) to the activated carbon conveying belt (10) to finish the activated carbon discharging.
6. The method of claim 5, wherein: the method also comprises an active carbon screening process, and the specific steps are as follows:
1) The activated carbon discharged from the discharge hopper (8) is conveyed to an activated carbon screening machine (11) by an activated carbon conveying belt (10), the crushed activated carbon is screened out by the activated carbon screening machine (11), and the qualified screened activated carbon is conveyed to a charging hopper (9) at the top of the activated carbon bin (1) by an activated carbon feeding trolley (16) for recycling;
2) The waste materials screened out by the activated carbon screening machine (11) are sent to a powdered activated carbon treatment workshop by a trolley (17) to complete the screening of the activated carbon.
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