CN205672778U - A kind of semi-dry type flue gas desulfurization device - Google Patents
A kind of semi-dry type flue gas desulfurization device Download PDFInfo
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- CN205672778U CN205672778U CN201620573336.1U CN201620573336U CN205672778U CN 205672778 U CN205672778 U CN 205672778U CN 201620573336 U CN201620573336 U CN 201620573336U CN 205672778 U CN205672778 U CN 205672778U
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Abstract
A kind of semi-dry type flue gas desulfurization device, belongs to flue gas desulfurization device technical field.Its technical scheme is: add desulfurizing tower unloading valve in the bottom of desulfurizing tower, in sweetening process, desulfurizing tower unloading valve bottom desulfurizing tower smoke chamber is closed, cold air is stoped to enter in desulfurizing tower, not only reduce the workload of booster fan, and ensure that stablizing of desulfurizing tower humidity and flue-gas temperature, therefore desulfurization is not affected by ambient temperature and flue-gas temperature.Owing to tower humidity and flue-gas temperature are stable, it is to avoid causing viscous tower and blocking dust-removal cloth-bag during whitewashing, desulphurization cost is low, and desulfuration efficiency is high.Simultaneously, ash in circulation ash silo of the present utility model enters venturi chamber by circulating ash conveying pipe, when desulfurizing tower inlet flue gas flow is bigger, partial fume is circulated ash silo unloading valve and is sealed in venturi chamber 3 bottom for holding gray back, prevent from dropping, environmental pollution can be avoided, reduce production cost, there is significant economic benefit and social benefit.
Description
Technical field
This utility model relates to a kind of semi-dry type flue gas desulfurization device, belongs to flue gas desulfurization device technical field.
Background technology
As important atmosphere pollution, manufacturing enterprise is in the waste gas of airborne release, and sulfur dioxide must be controlled in concentration
System is at below 180mg/m, and therefore flue gas desulfurization is the requisite important rings of production technology such as thermal power generation, sintering, vanadium extraction
Joint, the most frequently used flue gas desulfurization technique mainly has wet type (lime/lime stone gypsum), half dry type (spray drying method), inhales
Receive regenerative, spray calcium humidification activation formula etc..Compared with other sulfur removal technologies, semi-dry fume desulfuration technique has in desulfurizing tower
The advantages such as portion's simple in construction, unpowered parts, drag losses is little, equipment maintenance cost is low, are widely used in industrial
Flue gas desulfurization.Semi-dry fume desulfuration technique uses solid-state like circulation desulfurization agent, serosity and the flue gas of liquid
Learn reaction and remove the principle of the sulfur dioxide in flue gas.The main device of this semi-dry fume desulfuration technique has digestive appartus, spray
Mouth, desulfurizing tower, sack cleaner, star-shaped dust-discharging valve, scrapper conveyor, flow tube, middle ash silo, booster fan etc..During desulfurization, in digestion
The interior pulverized limestone of device adds water and makes serosity, carries out chemical reaction removal with smoke contacts in serosity being injected to desulfurizing tower with nozzle
Sulfur dioxide, forms powder gray back after serosity and smoke reaction, and gray back is transported to bag-type dust under flue gas pressures effect
Device, falls into the ash silo under cleaner unit after Bag filter, is delivered to middle ash silo through star-shaped dust-discharging valve and scrapper conveyor, then by elephant trunk
It is delivered in the horizontal flue that sintering machine fan outlet is connected with desulphurization system.The supercharging wind installed at desulfurizing tower outlet conduit
Under the draft effect of machine, gray back and flue gas are transported in desulfurizing tower, and desulfurizing tower bottom is venturi, and venturi bottom is spacious
Mouthful, direct and atmosphere, under the convulsion and atmospheric pressure effect of booster fan, form negative pressure in desulfurizing tower and hold gray back,
So that gray back, serosity and flue gas carry out chemical reaction in desulfurizing tower removes sulfur dioxide, then form new gray back, so follow
Ring；When the calcium oxide content in gray back is relatively low, it is impossible to when ensureing desulfurized effect, start the outer storehouse star-shaped dust-discharging valve under middle ash silo
Gray back is entered ash storehouse and forms useless ash.This semi-dry type flue gas desulfurization device and method have the disadvantage that due to desulfurizing tower literary composition
In mound, bottom is directly and atmosphere, and booster fan suction part cold air enters in desulfurizing tower, not only increases booster fan
Workload, and make tower humidity increase, flue-gas temperature reduces, and glues tower and the machine of dust-removal cloth-bag blocking when increasing whitewashing
Rate, therefore ambient temperature and flue-gas temperature are relatively big on the impact of desulfurization, and ambient temperature or the low meeting of flue-gas temperature cause desulfurizing agent to disappear
Consumption raises and desulfuration efficiency is low；When desulfurizing tower inlet flue gas flow is close to the convulsion ability of booster fan, desulphurization system enters
It is easily formed malleation in mouth flue and desulfurizing tower, causes gray back to drop, not only affect desulfurized effect, and cause the waste of desulfurizing agent
And environmental pollution.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of semi-dry type flue gas desulfurization device, and this device is not only
Can prevent a large amount of cold air from entering desulfurizing tower and increase the workload of booster fan, cause viscous tower and blocking cloth bag phenomenon, it is to avoid
Desulfurization is impacted by ambient temperature and flue-gas temperature, and desulfurizing tower inlet flue gas flow can be avoided to cause more greatly gray back to fall
Fall.
The technical scheme solving above-mentioned technical problem is:
A kind of semi-dry type flue gas desulfurization device, it includes nozzle, desulfurizing tower, sack cleaner, screw(-type) feeder, useless ash
Storehouse, circulation ash silo, the smoke chamber bottom desulfurizing tower is connected with sulphur-containing exhaust gas inlet duct, and smoke chamber is connected above venturi chamber,
Venturi chamber is connected above desulfurizing tower reative cell, and desulfurizing tower reative cell surrounding is provided with nozzle, is cigarette above desulfurizing tower reative cell
Gas exports, and exhanst gas outlet connects sack cleaner, installs screw(-type) feeder, connect below screw(-type) feeder below sack cleaner
Useless ash silo, useless ash silo bottom connects circulation ash silo, and its improvements are, the smoke chamber lower end bottom desulfurizing tower is provided with desulfurization
Tower unloading valve.
Above-mentioned semi-dry type flue gas desulfurization device, installs circulation ash silo unloading valve bottom described circulation ash silo, circulation ash silo is unloaded
Ash valve is connected with circulating ash conveying pipe, in the middle part of the circulating ash conveying oblique venturi chamber being connected to desulfurizing tower of the pipe other end.
Of the present utility model have the beneficial effect that
This utility model adds desulfurizing tower unloading valve in the bottom of desulfurizing tower, in sweetening process, by desulfurizing tower flue gas
Desulfurizing tower unloading valve bottom room is closed, and stops cold air to enter in desulfurizing tower, not only reduces the workload of booster fan,
And ensure that stablizing of desulfurizing tower humidity and flue-gas temperature, therefore desulfurization is not affected by ambient temperature and flue-gas temperature.
Owing to tower humidity and flue-gas temperature are stable, it is to avoid causing viscous tower and blocking dust-removal cloth-bag during whitewashing, desulphurization cost is low, desulfurization
Efficiency is high.Meanwhile, the ash in circulation ash silo of the present utility model enters venturi chamber, when desulfurizing tower enters by circulating ash conveying pipe
When mouthful flue gas flow is bigger, partial fume is circulated ash silo unloading valve and is sealed in venturi chamber 3 bottom for holding gray back, prevents
Drop, environmental pollution can be avoided, reduce production cost.
This utility model simple in construction, easy to use, respond well, with the simple difficult problem improved and solve in producing, no
Reduced by only production cost, decrease the pollution to environment, there is significant economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is semi-dry type flue gas desulfurization device structural representation of the present utility model.
In figure, labelling is as follows: desulfurizing tower unloading valve 1, smoke chamber 2, venturi chamber 3, nozzle 4, desulfurizing tower reative cell 5, cloth bag
Cleaner unit 6, screw(-type) feeder 7, useless ash silo 8, useless ash silo unloading valve 9, circulation ash silo 10, circulation ash silo unloading valve 11, circulating ash
The outer discharge pipe 14 of conveying pipe 12, sulphur-containing exhaust gas inlet duct 13, desulfurization waste gas, the desulfurization outer arranging device 15 of useless ash.
Detailed description of the invention
This utility model device by desulfurizing tower, sack cleaner 6, screw(-type) feeder 7, useless ash silo 8, circulation ash silo 10, follow
Ring ash conveying pipe 12, sulfur-bearing discard inlet duct 13, outer discharge pipe 14 is discarded in desulfurization, the desulfurization outer arranging device 15 of useless ash forms, its
Middle desulfurizing tower includes smoke chamber 2, venturi chamber 3, desulfurizing tower reative cell 5, has nozzle 4 at desulphurization reaction indoor location.
Showing in figure, smoke chamber 3 lower end bottom desulfurizing tower is provided with desulfurizing tower unloading valve 2, the cigarette bottom desulfurizing tower
Air chamber 2 is connected with sulphur-containing exhaust gas inlet duct 13, and smoke chamber 2 is connected above venturi chamber 3, and venturi chamber 3 is connected above desulfurization
Tower reative cell 5, desulfurizing tower reative cell 5 surrounding is provided with nozzle 4, is exhanst gas outlet above desulfurizing tower reative cell 5；Exhanst gas outlet is even
Connecing sack cleaner 6, sack cleaner 6 discharge pipe 14 outer with desulfurization waste gas is connected.In sweetening process, by desulfurizing tower flue gas
Desulfurizing tower unloading valve 1 bottom room is closed, and stops cold air to enter in desulfurizing tower, and the work not only reducing booster fan is born
Lotus, and ensure that stablizing of desulfurizing tower humidity and flue-gas temperature, therefore ambient temperature and flue-gas temperature do not have shadow to desulfurization
Ring.Owing to tower humidity and flue-gas temperature are stable, it is to avoid causing viscous tower and blocking dust-removal cloth-bag during whitewashing, desulphurization cost is low,
Desulfuration efficiency is high.
Showing in figure, screw(-type) feeder 7 is installed in the lower section of sack cleaner 6, connects useless ash silo 8 below screw(-type) feeder 7,
Useless ash silo 8 side connects the desulfurization outer arranging device 15 of useless ash, and useless ash silo 8 bottom is by useless ash silo unloading valve 9 and circulation ash silo 10 phase
Connect.Install circulation ash silo unloading valve 11 in the bottom of circulation ash silo 10, circulation ash silo unloading valve 11 carries pipe 12 with circulating ash
Connect, in the middle part of the circulating ash conveying oblique venturi chamber 3 being connected to desulfurizing tower of pipe 12 other end.Ash in circulation ash silo 10 passes through
Circulating ash conveying pipe 12 enters venturi chamber 3, and when desulfurizing tower inlet flue gas flow is bigger, partial fume is unloaded ash by circulating ash silo
Valve 11 is sealed in venturi chamber 3 bottom for holding gray back, prevents from dropping, and can avoid environmental pollution, reduces production cost.
This utility model flue gas is carried out desulfurization process time, use following steps:
A. add water and pulverized limestone is made serosity, enter with smoke contacts in serosity being injected to desulfurizing tower reative cell 5 with nozzle 4
Row chemical reaction removes sulfur dioxide, forms powder gray back after serosity and smoke reaction；
B. gray back is transported to sack cleaner 6 under flue gas pressures effect, falls under cleaner unit after Bag filter
Ash silo, is delivered to useless ash silo 8 through screw(-type) feeder 7, then is delivered to circulate ash silo 10 by the useless ash silo unloading valve 9 under useless ash silo 8,
Opening the circulation ash silo unloading valve 11 under circulation ash silo 10, the ash in circulation ash silo 10 enters literary composition mound by circulating ash conveying pipe 12
In room 3；
C., under the draft effect of booster fan, gray back and flue gas are transported in desulfurizing tower reative cell 5, at booster fan
Draft effect under, form negative pressure in desulfurizing tower and hold gray back, so that gray back, serosity and flue gas carry out chemistry in desulfurizing tower
Sulfur dioxide is removed in reaction, forms new gray back, so circulates；
D. relatively low when the calcium oxide content in gray back, it is impossible to when ensureing desulfurized effect, start the useless ash of the desulfurization in useless ash silo 8
Gray back is discharged by outer arranging device 15.
In sweetening process, the desulfurizing tower unloading valve 1 bottom desulfurizing tower smoke chamber is closed, stop cold air to enter desulfurization
In tower, not only reduce the workload of booster fan, and ensure that stablizing, therefore of desulfurizing tower humidity and flue-gas temperature
Desulfurization is had little to no effect by ambient temperature and flue-gas temperature.
Gray back is delivered in venturi chamber 3, owing to flue gas flows up and holds gray back in tower, prevents gray back at venturi
Room 3 inwall bonding.
Owing to tower humidity and flue-gas temperature are stable, it is to avoid causing viscous tower and blocking dust-removal cloth-bag during whitewashing, desulfurization becomes
This is low, and desulfuration efficiency is high.
Gray back is tangentially entered by the middle part of desulfurizing tower venturi chamber 3, when desulfurizing tower inlet flue gas flow is bigger, and partial fume
It is sealed in venturi chamber 3 bottom for holding gray back by circulation ash silo unloading valve 11, prevents from dropping, environmental pollution can be avoided, fall
Low production cost.
Claims (2)
1. a semi-dry type flue gas desulfurization device, it includes nozzle (4), desulfurizing tower, sack cleaner (6), screw(-type) feeder
(7), useless ash silo (8), circulation ash silo (10), the smoke chamber (2) bottom desulfurizing tower is connected with sulphur-containing exhaust gas inlet duct (13), cigarette
Air chamber (2) is connected above venturi chamber (3), and venturi chamber (3) is connected above desulfurizing tower reative cell (5), desulfurizing tower reative cell (5)
Surrounding is provided with nozzle (4), and desulfurizing tower reative cell (5) top is exhanst gas outlet, and exhanst gas outlet connects sack cleaner (6), cloth
Screw(-type) feeder (7) is installed in bag dust collector (6) lower section, and screw(-type) feeder (7) lower section connects useless ash silo (8), and useless ash silo bottom is even
Connect circulation ash silo (10), it is characterised in that: smoke chamber (2) lower end bottom desulfurizing tower is provided with desulfurizing tower unloading valve (1).
Semi-dry type flue gas desulfurization device the most according to claim 1, it is characterised in that: described circulation ash silo (10) bottom peace
Dress circulation ash silo unloading valve (11), circulation ash silo unloading valve (11) is connected with circulating ash conveying pipe (12), circulating ash conveying pipe
(12) oblique venturi chamber (3) middle part being connected to desulfurizing tower of the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620573336.1U CN205672778U (en) | 2016-06-15 | 2016-06-15 | A kind of semi-dry type flue gas desulfurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620573336.1U CN205672778U (en) | 2016-06-15 | 2016-06-15 | A kind of semi-dry type flue gas desulfurization device |
Publications (1)
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| CN205672778U true CN205672778U (en) | 2016-11-09 |
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| CN201620573336.1U Active CN205672778U (en) | 2016-06-15 | 2016-06-15 | A kind of semi-dry type flue gas desulfurization device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964071A (en) * | 2016-06-15 | 2016-09-28 | 河北钢铁股份有限公司承德分公司 | Half-dry type flue gas desulfurization device and method |
-
2016
- 2016-06-15 CN CN201620573336.1U patent/CN205672778U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964071A (en) * | 2016-06-15 | 2016-09-28 | 河北钢铁股份有限公司承德分公司 | Half-dry type flue gas desulfurization device and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 067102 A block 520, Luanhe town finance square, Shuangluan District, Chengde, Hebei Patentee after: River steel Limited by Share Ltd Chengde branch Address before: 067000 A block 520, Luanhe town finance square, Shuangluan District, Chengde, Hebei Patentee before: Chengde Branch Co., Ltd. of Hebei Iron & Steel Group |