CN111804567B - Process for filtering superfine active coke powder - Google Patents
Process for filtering superfine active coke powder Download PDFInfo
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- CN111804567B CN111804567B CN202010512596.9A CN202010512596A CN111804567B CN 111804567 B CN111804567 B CN 111804567B CN 202010512596 A CN202010512596 A CN 202010512596A CN 111804567 B CN111804567 B CN 111804567B
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- active coke
- air
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- air screen
- dust
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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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
- B01D53/06—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention discloses a process for filtering superfine active coke powder, which belongs to the technical field of integrated processes of active coke desulfurization and denitrification equipment, and comprises the steps of upgrading and reconstructing a material circulating system in the original process, and arranging an air screen and a discharger between a vibrating screen and a bucket chain machine; two dust collecting pipelines are arranged at the bottom of the chain bucket and connected with an air screen; the dust removing air of the chain bucket machine is used as an air source of an air screen, and the air after passing through the air screen is sent to a dust remover; the active coke falls into the air screen through the vibrating screen and the chute, falls into the chain bucket machine through the discharger and is transferred into the adsorption tower by the chain bucket machine. According to the invention, the air screen device is additionally arranged below the vibrating screen, the active coke and the superfine active coke powder are separated by utilizing the energy of air flow according to the different specific gravities of the active coke and the superfine active coke powder, so that the superfine active coke powder is automatically filtered, the process modification difficulty is small, the automatic operation is high, and the maintenance cost is low.
Description
Technical Field
The invention relates to the technical field of integrated processes of activated coke desulfurization and denitrification equipment, in particular to a process for filtering superfine activated coke powder.
Background
At present, in the integrated process technology of desulfurization and denitrification of active coke, the active coke is taken as a main raw material of desulfurization and denitrification equipment, can continuously run in the equipment for 24 hours, and can continuously rub the equipment and the active coke during running, so that superfine active coke powder can be produced. In the prior art, only a vibrating screen can be used for screening, but superfine coke powder still exists after screening, and the superfine coke powder can enter an adsorption tower along with active coke particles, so that the dust in the tower is too high in the past for a long time, the resistance of a bed layer in the tower is high, and the loss of a tower body of the adsorption tower is accelerated; because the coke powder in the tower is too much, the dust at the outlet can not stably reach the ultralow emission, and the sintering yield limit proportion is influenced.
Excessive ultrafine active coke powder in the active coke causes problems of 1) decreased porosity and increased air flow resistance. 2) The active coke is easy to harden in the tower, a moving dead zone is formed, and the temperature is easy to fly. 3) The smaller the particle size, the more easily the particles are oxidized, and the excessive particles can easily cause the carbon chamber to fire at a high temperature. 4) The pore plate of the air chamber is easy to block, so that the resistance in the tower is further increased. 5) More crushed materials and dust easily cause the dust content at the smoke outlet to exceed the standard. Therefore, the removal of the superfine active coke powder in the active coke is of great importance in the integrated desulfurization and denitrification process of the active coke.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a process for filtering superfine active coke powder, wherein an air screen device is additionally arranged below a vibrating screen, a dust collecting system is modified, the superfine active coke powder is automatically filtered, the process modification difficulty is small, the automatic operation is high, and the maintenance cost is low.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a process for filtering superfine active coke powder comprises the following steps:
s1: upgrading and transforming a material circulating system in the original active coke desulfurization and denitrification integrated process, and arranging an air screen and a discharger between a vibrating screen and a bucket chain machine;
s2: two dust collecting pipelines are additionally arranged at the bottom of the chain bucket machine and are respectively connected with two dust collecting ports at two ends of the lower part of the air screen;
s3: the dust removing air of the chain bucket machine is used as an air source of an air screen, and the air after passing through the air screen is sent to a dust remover;
s4: the active coke falls into the air screen through the vibrating screen and the chute, falls into the chain bucket machine through the discharger and is transferred into the adsorption tower by the chain bucket machine.
The technical scheme of the invention is further improved as follows: in S4, in the falling process of the active coke in the air screen, under the action of the dedusting air of the bucket chain machine, the superfine active coke powder in the active coke is filtered and taken away by a deduster; two dust collecting pipelines are additionally arranged at the bottom of the chain bucket machine, so that the superfine active coke powder generated by the active coke in the transportation process of the chain bucket machine can be removed, and the content of the superfine active coke powder dust in the active coke entering the adsorption tower is further reduced.
The technical scheme of the invention is further improved as follows: the air screen is of a three-section gourd-shaped structure, a feed inlet connected with the chute is formed in one side of the upper portion of the air screen, a dust removing opening connected with the dust remover is formed in the other side of the air screen, two dust collecting openings connected with two dust collecting pipelines at the bottom of the chain bucket are formed in two sides of the lower portion of the air screen, and a discharge outlet connected with the discharger is formed in the bottom of the air screen.
The technical scheme of the invention is further improved as follows: the chute comprises a straight pipe section connected with the vibrating screen and an inclined pipe section connected with the air screen, and the inclined pipe section and the straight pipe section form an included angle of 45 degrees; the length of the straight pipe section is 880mm, and the diameter of the straight pipe section is 356 mm; the length of the inclined tube section is 748mm, and the diameter is 273 mm.
The technical scheme of the invention is further improved as follows: the outer diameter of the dust removal opening is 550 mm.
The technical scheme of the invention is further improved as follows: the feed inlet of air screen and the contained angle of elephant trunk straight tube section are 45 o.
Due to the adoption of the technical scheme, the invention has the technical progress that:
1. the invention does not increase the air volume load of the dust remover after being transformed, has certain temperature, can prevent low temperature in winter and improves the operation rate of the dust remover.
2. The air screen arranged in the invention can ensure normal feeding of the active coke, can effectively remove ultrafine coke powder, solves the problem that the resistance of a bed layer in the tower is high, and improves the stability and the operation rate of equipment.
3. The two dust collecting pipelines are additionally arranged at the bottom of the chain bucket machine, so that the superfine active coke powder generated by the active coke in the transportation process of the chain bucket machine can be removed, and the content of the superfine active coke powder dust in the active coke entering the adsorption tower is further reduced.
4. The invention effectively reduces the condition of more coke powder in the tower, the dust at the outlet stably reaches the standard, and the sintering yield limit ratio is effectively reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the air screen of the present invention;
fig. 3 is a working schematic diagram of the air screen of the present invention.
The device comprises a vibrating screen 1, a vibrating screen 2, an air screen 3, a discharger 4, a feeding hole 5, a dust removing hole 6, a dust collecting hole 7, a discharging hole 8, a bucket chain machine 9 and a chute.
Detailed Description
The invention relates to a process for filtering superfine active coke powder, which is developed aiming at the problem that only a vibrating screen can carry out screening in the prior art, but superfine active coke powder still exists after screening.
The present invention will be described in further detail with reference to the accompanying drawings 1 to 3:
as shown in fig. 1 and 2, a process for filtering ultrafine active coke powder comprises the following steps:
s1: upgrading and transforming a material circulating system in the original active coke desulfurization and denitrification integrated process, and arranging an air screen 2 and a discharger 3 between a vibrating screen 1 and a chain bucket machine 8;
s2: two dust collecting pipelines are additionally arranged at the bottom of the chain bucket machine 8 and are respectively connected with two dust collecting ports 6 at two ends of the lower part of the air screen 2;
s3: dust removing air of the chain bucket machine 8 is used as an air source of the air screen 2, and the air passing through the air screen 2 is sent to the dust remover;
s4: the active coke falls into an air screen 2 through a vibrating screen 1 and a chute 9, falls into a chain bucket machine 8 through a discharger 3, and is transferred into an adsorption tower through the chain bucket machine 8; in the falling process of the active coke in the air screen 2, under the action of the dust removing air of the chain bucket machine 8, superfine active coke powder in the active coke is filtered and taken away by a dust remover; the dust collection pipeline arranged at the bottom of the chain bucket machine 8 can remove the superfine active coke powder generated by the active coke in the transportation process of the chain bucket machine 8, and further reduce the content of the superfine active coke powder dust in the active coke entering the adsorption tower.
The air screen 2 is of a three-section gourd-shaped structure, one side of the upper portion of the air screen 2 is provided with a feeding hole 4 connected with an elephant trunk 9, the other side of the upper portion of the air screen 2 is provided with a dust removing opening 5 connected with a dust remover, two sides of the lower portion of the air screen 2 are provided with two dust collecting openings 6 connected with two dust collecting pipelines at the bottom of a chain bucket machine 8, and the bottom of the air screen 2 is provided with a discharging hole 7 connected with a discharger 3. The feed inlet 4 of air screen 2 and the contained angle of 9 straight tube sections of elephant trunk are 45 degrees.
The chute 9 comprises a straight pipe section connected with the vibrating screen 1 and an inclined pipe section connected with the air screen 2, and the inclined pipe section and the straight pipe section form an included angle of 45 degrees; the length of the straight pipe section is 880mm, and the diameter of the straight pipe section is 356 mm; the length of the inclined tube section is 748mm, and the diameter is 273 mm. The design of this structure makes things convenient for more that active burnt falls into in the air screen 2.
The outer diameter of the dust removal opening 5 is 550 mm. The dust removal port 5 is connected with a bag-type dust remover, wherein the bag-type dust remover provides a dust collection air source and dust collection.
The working principle is as follows:
as shown in fig. 2, in the integrated process technology of desulfurization and denitrification by using active coke, the active coke is used as a main raw material of desulfurization and denitrification equipment, and can continuously run in the equipment for 24 hours, and can continuously rub with the equipment and the equipment during running, so that ultrafine active coke powder can be produced; active coke and superfine active coke powder enter from a feed port 4 of an air screen 2, enter a chain bucket machine 8 from a discharge port 7 at the lower part through a discharger 3, two dust collecting ports 6 of the air screen 2 are respectively connected to two dust collecting pipelines at the bottom of the chain bucket machine 8 for collecting dust, and a dust collecting port 5 of the air screen 2 is connected with a bag-type dust collector, wherein the bag-type dust collector provides a dust collecting air source and collects dust.
Specifically, as shown in fig. 3 (in fig. 3, ultrafine active coke powder refers to ultrafine active coke powder), the present invention separates and absorbs the ultrafine active coke powder in the active coke through the air screen 2, so as to achieve the effect of filtering the ultrafine active coke powder, and the main principle is that according to the difference of specific gravity of the active coke and the ultrafine active coke powder, when the active coke and the ultrafine active coke powder fall together in the air screen 2, the active coke and the ultrafine active coke powder are separated by using the energy of the air flow, the active coke continues to fall, and the ultrafine active coke powder rises along with the air flow until entering the dust remover, so as to complete the filtering of the ultrafine active coke powder; two dust collecting pipelines are additionally arranged at the bottom of the chain bucket machine 8, so that the superfine active coke powder generated by the active coke in the transportation process of the chain bucket machine 8 can be removed, and the content of the superfine active coke powder dust in the active coke entering the adsorption tower is further reduced.
In conclusion, the air screen device is additionally arranged below the vibrating screen, and the two dust collecting pipelines are additionally arranged at the bottom of the chain bucket machine; according to the different specific gravities of the active coke and the superfine active coke powder, the active coke and the superfine active coke powder are separated by utilizing the energy of air flow, so that the superfine active coke powder is automatically filtered, the process modification difficulty is small, the automatic operation is high, and the maintenance cost is low.
Claims (4)
1. A process for filtering superfine active coke powder is characterized in that: the method comprises the following steps:
s1: upgrading and modifying a material circulating system in the original active coke desulfurization and denitrification integrated process, and arranging an air screen (2) and a discharger (3) between a vibrating screen (1) and a chain bucket machine (8);
s2: two dust collecting pipelines are additionally arranged at the bottom of the chain bucket machine (8), and are respectively connected with two dust collecting ports (6) at two ends of the lower part of the air screen (2);
s3: dust removing air of the chain bucket machine (8) is used as an air source of the air screen (2), and the air passing through the air screen (2) is sent to the dust remover;
s4: the active coke falls into an air screen (2) through a vibrating screen (1) and a chute (9), falls into a chain bucket machine (8) through a discharger (3), and is transferred into an adsorption tower by the chain bucket machine (8);
in S4, in the falling process of the active coke in the air screen (2), under the action of the dedusting air of the chain bucket machine (8), superfine active coke powder in the active coke is filtered and taken away by a deduster; two dust collection pipelines are additionally arranged at the bottom of the chain bucket machine (8) to remove superfine active coke powder generated by active coke in the transportation process of the chain bucket machine (8), so that the content of superfine active coke powder dust in the active coke entering an adsorption tower is further reduced;
the dust collector is characterized in that the air screen (2) is of a three-section gourd-shaped structure, one side of the upper portion of the air screen (2) is provided with a feeding hole (4) connected with the chute (9), the other side of the upper portion of the air screen (2) is provided with a dust removing hole (5) connected with the dust collector, two dust collecting holes (6) connected with two dust collecting pipelines at the bottom of the chain bucket machine (8) are formed in the two sides of the lower portion of the air screen (2), and a discharging hole (7) connected with the discharger (3) is formed in the bottom of the air screen (2).
2. The process of claim 1, wherein the ultra-fine activated coke powder is prepared by the following steps: the chute (9) comprises a straight pipe section connected with the vibrating screen (1) and an inclined pipe section connected with the air screen (2), and the included angle between the inclined pipe section and the straight pipe section is 45 degrees; the length of the straight pipe section is 880mm, and the diameter of the straight pipe section is 356 mm; the length of the inclined tube section is 748mm, and the diameter is 273 mm.
3. The process for filtering ultrafine active coke powder according to claim 1, wherein the process comprises the following steps: the outer diameter of the dust removal opening (5) is 550 mm.
4. The process of claim 1, wherein the ultra-fine activated coke powder is prepared by the following steps: and the included angle between the feed port (4) of the air screen (2) and the straight pipe section of the chute (9) is 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010512596.9A CN111804567B (en) | 2020-06-08 | 2020-06-08 | Process for filtering superfine active coke powder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010512596.9A CN111804567B (en) | 2020-06-08 | 2020-06-08 | Process for filtering superfine active coke powder |
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| CN111804567A CN111804567A (en) | 2020-10-23 |
| CN111804567B true CN111804567B (en) | 2022-08-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112156984A (en) * | 2020-09-21 | 2021-01-01 | 中冶南方都市环保工程技术股份有限公司 | Active coke recycling separation system and separation method |
| CN114160419B (en) * | 2021-11-18 | 2023-04-28 | 中冶南方都市环保工程技术股份有限公司 | Screening system applied to active coke desulfurization and denitrification process |
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| CN1235187A (en) * | 1999-05-10 | 1999-11-17 | 王茂春 | Fine coal granules and method and apparatus for producing the same |
| CN1864809A (en) * | 2006-04-26 | 2006-11-22 | 张文辉 | A method for purifying flue gas by use of powdered activated coke |
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| JP5116883B1 (en) * | 2012-02-10 | 2013-01-09 | 株式会社 テツゲン | Method and apparatus for producing reduced iron |
| CN104148289B (en) * | 2014-07-29 | 2016-05-18 | 山推建友机械股份有限公司 | A kind of vibrosieve equipment that selects powder with air-flow |
| CN105149078A (en) * | 2015-09-30 | 2015-12-16 | 徐州天正活性炭厂 | Post-treatment process and device of granular active carbon |
| CN205252834U (en) * | 2016-01-06 | 2016-05-25 | 宣城市楷昂化工有限公司 | Sodium metabisulfite tail gas desulfurization device |
| CN205270143U (en) * | 2016-01-11 | 2016-06-01 | 山东维统科技有限公司 | Fly ash decarbonization system |
| CN208288441U (en) * | 2018-03-14 | 2018-12-28 | 一重集团大连工程建设有限公司 | A kind of strength separator for activated coke particle |
| CN109173570A (en) * | 2018-10-16 | 2019-01-11 | 联峰钢铁（张家港）有限公司 | A kind of flue gas desulfurization and denitrification system |
| CN109622373A (en) * | 2019-01-31 | 2019-04-16 | 武汉华柏环保科技有限公司 | A kind of activated carbon capillary ultrafine dust wind screening device |
| CN209696680U (en) * | 2019-03-28 | 2019-11-29 | 赵健 | A kind of comprehensive treatment system for activated coke factory exhaust gas |
| CN210543979U (en) * | 2019-08-29 | 2020-05-19 | 上海克硫环保科技股份有限公司 | Activated coke strengthening dust removal system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1235187A (en) * | 1999-05-10 | 1999-11-17 | 王茂春 | Fine coal granules and method and apparatus for producing the same |
| CN1864809A (en) * | 2006-04-26 | 2006-11-22 | 张文辉 | A method for purifying flue gas by use of powdered activated coke |
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