CN113648767A - Dry deacidification system capable of preventing dust deposition - Google Patents
Dry deacidification system capable of preventing dust deposition Download PDFInfo
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- CN113648767A CN113648767A CN202110934185.3A CN202110934185A CN113648767A CN 113648767 A CN113648767 A CN 113648767A CN 202110934185 A CN202110934185 A CN 202110934185A CN 113648767 A CN113648767 A CN 113648767A
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- flue gas
- dry
- tower
- ash bucket
- deacidification
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention provides an anti-dust-deposition dry deacidification system which reduces the possibility of blocking of a flue gas channel between devices and further reduces the maintenance cost of the devices. The system comprises a quench tower, a dry deacidification tower and a bag-type dust remover, and is characterized in that: the ash bucket also comprises a ship-shaped ash bucket, the longitudinal section of the ship-shaped ash bucket is in an inverted trapezoid shape with a wide upper part and a narrow lower part, and an ash bucket flue gas inlet and an ash bucket flue gas outlet are arranged on a top cover of the ship-shaped ash bucket; the flue gas outlet at the bottom of the quenching tower is communicated with the flue gas inlet of the ash bucket, and the flue gas inlet of the deacidification tower at the bottom of the dry-method deacidification tower is communicated with the flue gas outlet of the ash bucket; the dry-method deacidification tower is a double-sleeve dry-method tower, a deacidification tower flue gas outlet of the dry-method deacidification tower is arranged at the bottom of an outer barrel of the dry-method deacidification tower, and the deacidification tower flue gas outlet is connected with a flue gas inlet of the bag-type dust remover through an expansion joint.
Description
Technical Field
The invention relates to the technical field of environmental protection equipment, in particular to a dry deacidification system capable of preventing dust deposition.
Background
In the existing dry deacidification system, a quenching tower is connected with a dry deacidification tower, and the dry deacidification tower is connected with a bag-type dust remover through a section of horizontal flue; the moisture content of the flue gas at the outlet of the quenching tower is large, the viscosity of fly ash is increased due to poor heat insulation or air leakage and the like, and the fly ash is easy to settle, agglomerate and even block when passing through a horizontal flue between the quenching tower and a dry-method deacidification tower; between the dry-method deacidification tower and the bag-type dust remover, because of the structural size of the device, the flue gas enters the bag-type dust remover from the dry-method deacidification tower from bottom to top, and when the flue gas passes through the middle horizontal connection flue, the problem of blockage caused by fly ash sedimentation inevitably occurs; the problem of flue blockage caused by dust deposition and sedimentation easily occurs in the two sections of horizontal flues, and further the maintenance cost of equipment is increased.
Disclosure of Invention
In order to solve the problems that in a horizontal flue in the conventional dry deacidification system, dust deposition is easy to occur, and the flue is blocked due to sedimentation, so that the equipment maintenance cost is increased, the invention provides the dry deacidification system for preventing the dust deposition, which reduces the possibility of blocking of a flue gas channel between equipment and further reduces the equipment maintenance cost.
The technical scheme of the invention is as follows: the dry deacidification system for preventing dust deposition comprises a quench tower, a dry deacidification tower and a bag-type dust remover, and is characterized in that:
the ash bucket also comprises a ship-shaped ash bucket, the longitudinal section of the ship-shaped ash bucket is in an inverted trapezoid shape with a wide upper part and a narrow lower part, and an ash bucket flue gas inlet and an ash bucket flue gas outlet are arranged on a top cover of the ship-shaped ash bucket;
the flue gas outlet at the bottom of the quenching tower is communicated with the flue gas inlet of the ash bucket, and the flue gas inlet of the deacidification tower at the bottom of the dry-method deacidification tower is communicated with the flue gas outlet of the ash bucket;
the dry-method deacidification tower is a double-sleeve dry-method tower, a deacidification tower flue gas outlet of the dry-method deacidification tower is arranged at the bottom of an outer barrel of the dry-method deacidification tower, and the deacidification tower flue gas outlet is connected with a flue gas inlet of the bag-type dust remover through an expansion joint.
It is further characterized in that:
in the dry deacidification tower, the outer cylinder is sleeved outside an inner cylinder of the dry deacidification tower, a flue gas inlet of the deacidification tower is arranged at the bottom of the inner cylinder, and a flue gas outlet at the top of the inner cylinder is communicated with an inner cavity of the outer cylinder; the outer cylinder is connected with a connection transition section of the flue gas outlet of the deacidification tower, and the connection transition section is arranged as an inclined transition section from top to bottom;
the quenching water spray gun in the quenching tower adopts a spray gun with the flow rate of a single spray gun lower than 800 kg/h.
According to the dry deacidification system capable of preventing ash accumulation, the quench tower and the dry deacidification tower share the ship-shaped ash bucket, the flow speed of flue gas discharged by the quench tower is reduced after the flue gas enters the ship-shaped ash bucket, fly ash mixed in the flue gas is actively settled and then enters the dry deacidification tower, the use of a horizontal flue is avoided, settlement is recovered through the ship-shaped ash bucket, and the problem that the flue is blocked due to the settlement of the fly ash is avoided; the flue gas outlet of the deacidification tower of the dry-method deacidification tower is directly connected with the flue gas inlet of the bag-type dust remover, so that a horizontal flue is avoided, and the probability of flue blockage caused by fly ash sedimentation is greatly reduced; a small-flow spray gun is adopted as a quenching water spray gun in the quenching tower, and water mist particles sprayed by the spray gun are small, so that the liquid water content in the flue gas is reduced, and the probability of the problems of agglomeration and equipment blockage caused by liquid water in the fly ash in the flue gas is further reduced; in the dry-method deacidification tower, the outer cylinder is connected with a connecting transition section of the flue gas outlet of the deacidification tower, and the transition section is arranged as an inclined transition section from top to bottom, so that the flue gas coming out of the inner cylinder is ensured to enter the bag-type dust remover in a downward-rushing manner from top to bottom, and the probability of the problem that fly ash in the flue gas is adhered to the inner wall of a flue to be blocked is further reduced.
Drawings
FIG. 1 is a schematic diagram of a dry deacidification system according to this patent.
Detailed Description
As shown in figure 1, the invention comprises a dry deacidification system for preventing ash accumulation, which comprises a quenching tower 1, a dry deacidification tower 3, a bag-type dust remover 4 and a boat-shaped ash bucket 2.
The longitudinal section of the ship-shaped ash bucket 2 is in an inverted trapezoid shape with a wide upper part and a narrow lower part, and a top cover of the ship-shaped ash bucket 2 is provided with an ash bucket flue gas inlet 2-1 and an ash bucket flue gas outlet 2-2; in the specific implementation, the width of the upper top cover of the ship-shaped ash bucket 2 is larger than the diameter of the straight cylinder end of the quenching tower 1, meanwhile, the cross section of the upper top cover of the ship-shaped ash bucket 2 is larger than the sum of the cross section of the straight cylinder bottom end surface of the quenching tower 1 and the inlet section of the flue gas inlet of the deacidification tower at the bottom end of the dry deacidification tower 3, and the quenching tower 1 and the dry deacidification tower 3 can simultaneously share the ship-shaped ash bucket 2 as a flue gas channel; the flue gas outlet at the bottom of the quench tower 1 is communicated with the flue gas inlet 2-1 of the ash bucket, and the flue gas inlet 3-4 of the deacidification tower at the bottom of the dry deacidification tower 3 is communicated with the flue gas outlet 2-2 of the ash bucket.
The quenching water spray guns 1-2 in the quenching tower 1 adopt small-flow spray guns 1-2 with the flow of a single spray gun being lower than 800kg/h, the number of the spray guns 1-2 is increased in the quenching tower 1, on the basis of realizing the function of quenching flue gas, the situation that the pressure or flow fluctuation occurs in compressed air is ensured, the atomized particles sprayed out by the reduced spray guns can be effectively ensured to be smaller, the content of liquid water in the flue gas is reduced, the probability that fly ash in the flue gas is affected with damp is reduced, and further, the probability that the flue gas is adhered to the inner wall of equipment and blocks is blocked is reduced.
High-temperature flue gas entering from a flue gas inlet 1-1 of a quench tower is cooled by quench water sprayed by a spray gun 1-2 and enters an inner cavity of a ship-shaped ash hopper 2 from a flue gas outlet at the bottom of the quench tower 1 and a flue gas inlet 2-1 of the ash hopper; the internal space of the ship-shaped ash bucket 2 is large, the flow velocity of the flue gas is obviously reduced after entering the interior of the ship-shaped ash bucket, the fly ash mixed in the flue gas is favorably actively settled, and the settled fly ash falls into the ash bucket at the lower part and is discharged from the ash collection port 2-3 through a scraper; the settled flue gas enters a dry-method deacidification tower 3 from a flue gas outlet 2-2 of an ash hopper from bottom to top; among this patent technical scheme, connect quench tower 1, dry process deacidification tower 3 through ship type ash bucket 2, leading-in the dry process deacidification tower 3 with the flue gas before, subside the fly ash in the flue gas earlier, reduced the probability of flue gas adhesion equipment inner wall in the follow-up equipment, connect quench tower 1 through ship type ash bucket 2 in addition, dry process deacidification tower 3 has avoided using horizontal flue between the two, thereby avoided the problem that horizontal flue appears stifled grey easily. Meanwhile, the design that the quenching tower 1 and the dry deacidification tower 3 share the ash bucket is adopted, so that ash conveying equipment and ash unloading points are reduced, the equipment maintenance workload of workers is reduced, the ash unloading frequency is reduced, and the ash unloading workload of the workers on site is reduced.
The dry deacidification tower 3 is a double-sleeve dry tower, comprising: when the inner cylinder 3-1 and the outer cylinder 3-2 are sleeved together, in specific implementation, the inner cylinder 3-1 and the outer cylinder 3-2 are connected through a vertical partition plate which is simultaneously perpendicular to the outer side wall of the inner cylinder 3-1 and the inner side wall of the outer cylinder 3-2, so that the inner cylinder and the outer cylinder can be connected, and smoke can also pass through between the inner cylinder and the outer cylinder; a flue gas outlet 3-3 of a deacidification tower of the dry deacidification tower 3 is arranged at the bottom of the outer cylinder 3-2, the flue gas outlet 3-3 of the deacidification tower is connected with a flue gas inlet of a bag-type dust remover 4 through an expansion joint, a horizontal flue between the flue gas inlet and the flue gas outlet is eliminated, and the problem that the horizontal flue is easy to block dust is avoided; the outer cylinder 3-2 is sleeved outside the inner cylinder 3-1, the flue gas inlet 3-4 of the deacidification tower is arranged at the bottom of the inner cylinder 3-1, and the flue gas outlet at the top of the inner cylinder 3-1 is communicated with the inner cavity of the outer cylinder 3-2; the outer cylinder 3-2 is connected with a connection transition section of the flue gas outlet 3-3 of the deacidification tower, and the transition section is arranged as an inclined transition section from top to bottom; the flue gas enters the inner cylinder 3-1 from the ash hopper flue gas outlet 2-2 from bottom to top, the flue gas in the inner cylinder 3-1 also flows from bottom to top, enters the inner cavity of the outer cylinder 3-2 from the top flue gas outlet of the inner cylinder 3-1, finally enters the dust collector flue gas inlet 4-1 of the bag-type dust collector 4 from the top to bottom in a downward flushing manner from the flue gas outlet 3-3 of the deacidification tower through a transition inclined section from top to bottom, the flue gas flow speed is high, and the possibility that fly ash in the flue gas is adhered and blocks the inner wall of the device is further avoided.
Claims (3)
1. The dry deacidification system for preventing dust deposition comprises a quench tower, a dry deacidification tower and a bag-type dust remover, and is characterized in that:
the ash bucket also comprises a ship-shaped ash bucket, the longitudinal section of the ship-shaped ash bucket is in an inverted trapezoid shape with a wide upper part and a narrow lower part, and an ash bucket flue gas inlet and an ash bucket flue gas outlet are arranged on a top cover of the ship-shaped ash bucket;
the flue gas outlet at the bottom of the quenching tower is communicated with the flue gas inlet of the ash bucket, and the flue gas inlet of the deacidification tower at the bottom of the dry-method deacidification tower is communicated with the flue gas outlet of the ash bucket;
the dry-method deacidification tower is a double-sleeve dry-method tower, a deacidification tower flue gas outlet of the dry-method deacidification tower is arranged at the bottom of an outer barrel of the dry-method deacidification tower, and the deacidification tower flue gas outlet is connected with a flue gas inlet of the bag-type dust remover through an expansion joint.
2. The dry deacidification system according to claim 1, wherein the dry deacidification system comprises: in the dry deacidification tower, the outer cylinder is sleeved outside an inner cylinder of the dry deacidification tower, a flue gas inlet of the deacidification tower is arranged at the bottom of the inner cylinder, and a flue gas outlet at the top of the inner cylinder is communicated with an inner cavity of the outer cylinder; the outer cylinder is connected with a connection transition section of the flue gas outlet of the deacidification tower, and the connection transition section is a transition inclined section from top to bottom.
3. The dry deacidification system according to claim 1, wherein the dry deacidification system comprises: the quenching water spray gun in the quenching tower adopts a spray gun with the flow rate of a single spray gun lower than 800 kg/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110934185.3A CN113648767A (en) | 2021-08-16 | 2021-08-16 | Dry deacidification system capable of preventing dust deposition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110934185.3A CN113648767A (en) | 2021-08-16 | 2021-08-16 | Dry deacidification system capable of preventing dust deposition |
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| Publication Number | Publication Date |
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| CN113648767A true CN113648767A (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110934185.3A Pending CN113648767A (en) | 2021-08-16 | 2021-08-16 | Dry deacidification system capable of preventing dust deposition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117679950A (en) * | 2024-02-02 | 2024-03-12 | 北京中科润宇环保科技股份有限公司 | Anti-blocking dry deacidification ash circulating and returning device and working method |
| CN117679950B (en) * | 2024-02-02 | 2024-06-11 | 北京中科润宇环保科技股份有限公司 | Anti-blocking dry deacidification ash circulating and returning device and working method |
-
2021
- 2021-08-16 CN CN202110934185.3A patent/CN113648767A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117679950A (en) * | 2024-02-02 | 2024-03-12 | 北京中科润宇环保科技股份有限公司 | Anti-blocking dry deacidification ash circulating and returning device and working method |
| CN117679950B (en) * | 2024-02-02 | 2024-06-11 | 北京中科润宇环保科技股份有限公司 | Anti-blocking dry deacidification ash circulating and returning device and working method |
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