CN2516839Y - Smoke desulfurizing agent Ca(OH)2 powder high energy auelerating powder adsorption pump for coal fired boiler - Google Patents
Smoke desulfurizing agent Ca(OH)2 powder high energy auelerating powder adsorption pump for coal fired boiler Download PDFInfo
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- CN2516839Y CN2516839Y CN 01255078 CN01255078U CN2516839Y CN 2516839 Y CN2516839 Y CN 2516839Y CN 01255078 CN01255078 CN 01255078 CN 01255078 U CN01255078 U CN 01255078U CN 2516839 Y CN2516839 Y CN 2516839Y
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Abstract
The utility model relates to a high-energy accelerating powder suction pump for the powder of Ca (OH) 2 flue gas desulphurization agent, which can absorb the harmful substance SO2 in flue gas emitted by coal burning boilers to carry out desulphurization treatment. The utility model is characterized in that: a negative pressure chamber is positioned in the middle of a chamber of an aluminum alloy high-energy accelerator, and the negative pressure chamber is communicated with an input tube for compressed air, an output tube for powder-gas mixture and a powder suction tube respectively; an intake port of the input tube for compressed air has larger diameter than an outlet port. The utility model has an advantage that the utility model overcomes the shortcomings of the technical proposal in prior art that: as SO2 is absorbed by combusting the CaCO3 lime stones at high temperature, the desulphurization efficiency is low, the operation thermal efficiency of the boiler system is affected, the boiler equipment is corroded, and maintenance cost is high and other shortcomings.
Description
Technical field
The utility model is to be applied on the coal-burning boiler, coal-burning boiler is discharged the harmful substance SO that contains in the flue gas
2Carry out a kind of equipment of desulfurized treatment, particularly coal burning flue gas desulfurization agent Ca (OH)
2The powder high-efficiency accelerative powder adsorption pump.
Background technology
Existing desulfur technology is divided into two big classes substantially, and a class is wet desulphurization, and another kind of is dry desulfurization.The utility model belongs to the dry desulfurization scope.In the common dry-method desulfurization device, adopt screw-pushing type, in stove, increase calcium desulfurizing for the powder machine.Screw-pushing type is a screw-pushing type conveying lever for powder machine primary structure.The screw-pushing type conveying lever is driven by transmission device by alternating-current variable frequency motor or dc speed-regulating motor, the lime stone powder that derives from the desulfurizing agent feed bin is sent into the charging aperture of this equipment, and the powder amount size that enters casing is subjected to be controlled by the controller that baffle plate, sprocket wheel and baffle plate screw rod are formed.After the lime stone powder enters, because the promotion of spiral conveyor rod makes the lime stone powder through being sent to the desulphurizer of boiler charging aperture to tube cell.The powder-feeding amount size of this equipment is regulated rotating speed of motor by a cover electric control gear and is realized.The shortcoming of this equipment is, complex structure is bulky, serious wear, and hot-tempered sound is big, and the electric power energy consumption is big, the maintenance cost height.And because the hygroscopicity of lime stone powder is strong, very easily form powder and be attached on the screw rod, cause for powder interruption or inhomogeneous, directly the desulfurization dosage of boiler furnace is sent in influence, the important technology index Ca/S ratio that forms in the sulfur removal technology is difficult to control, directly influences desulfuration efficiency.While CaCO
3Thermal decomposition meeting at burner hearth absorbs a large amount of heat energy, influences boiler temperature and boiler operating efficiency.In-furnace calcium spraying causes the lime stone flying dust to increase in burner hearth, very big to the influence of the radiant heat transfer in the burner hearth, form the slagging scorification and knot ash of furnace wall cooling and superheater simultaneously easily, very big to the influence of the radiant heat transfer in the burner hearth, easy simultaneously slagging scorification and the knot ash that forms furnace wall cooling and superheater.In-furnace calcium spraying has certain corrosion to boiler component, increases the boiler maintenance cost.
Summary of the invention
The utility model provides a kind of coal burning flue gas desulfurization agent Ca (OH)
2The powder high-efficiency accelerative powder adsorption pump,
Compressed air input pipe 2 can be connected aluminium alloy high energy acclerator chamber body 1 respectively by screw thread with powder-air mixed output tube 3.
Operation principle: come from the high pressure roots blower fan when one, when having the air-flow access compressed air input pipe 2 of suitable pressure and certain speed, exit 6 at this input pipe, its channel cross-section is poly-so to diminish, because the compressed air that inserts possesses certain pressure, speed so gas is flowed through during port 6 places is promoted greatly, and its maximum speed can reach about 100m/s, forms one high-voltage high-speed air jet stream.When this strand air-flow directly sprays to powder-air mixed output tube 3, because the aerodynamics principle in the negative pressure cavity 4 of high energy acclerator chamber body 1, forms the negative pressure for atmosphere, when this negative pressure is enough big, the Ca (OH) that originally in the desulfurizing agent fluidizing bucket, has been fluidized
2Powder by in the powder absorbing pipe 5 negative suction chambeies 4, is subjected to the follow-up further collision that comes from the high velocity air of jet 6 by this negative pressure simultaneously, makes Ca (OH)
2The kinetic energy of powder particle further promotes, and the collision between particle and the particle further aggravates, and grain fineness is further broken up, and specific area further obtains quadratic extension, finally forms one and has than kinetic energy, fully the Ca (OH) of atomizing
2Powder gas mixed flow is injected in the desulfurization reaction tower from powder-air mixed output tube 3.One Ca (OH) like this
2The powder air-flow is fit to the SO in the reaction tower very much
2The chemical reaction that the gas luminous efficiency is higher.Regulate the air pressure of powder adsorption pump import 2, just can control the Ca (OH) of powder-air mixed output tube 3
2The powderject amount makes Ca (OH)
2The same SO of powder
2Gas-solid two-phase material in reaction tower, obtain to a certain degree controlled desulphurization reaction.
The utility model has overcome traditional calcium, high-temp combustion CaCO of increasing in boiler
3The desulfuration efficiency that limestone desulfurization brought is low, influences the thermal efficiency of steam generator system operation, and is big to the boiler plant corrosion, shortcomings such as maintenance cost height.The utility model is transferred to the desulfurization chemical reaction zone in the outside ad hoc desulfurization reaction tower of boiler by boiler internal, perhaps when the boiler flue long enough, utilize flue as desulfurization reaction zone, the work system of desulphurization reaction and boiler furnace is separated, has got rid of the adverse effect of traditional dry desulfurization the boiler operatiopn system.Carry the desulfurizing agent technology generation to replace and omitted the complicated screw-pushing type conveying equipment of a cover with strength.Carry the desulfurizing agent technology generation to replace and omitted complicated desulfurizing agent mixing and the conveying equipment of a cover with strength.The utility model structure is simple and direct, has solved all drawbacks that equipment was carried and added to other forms of desulfurizing agent.The emitted dose of desulfurizing agent can be effectively controlled.In the process of pneumatic transmission of desulfurizing agent, the specific area of desulfurizing agent powder particle further obtains quadratic extension, makes Ca (OH)
2Powder is to SO
2The physical absorption and the chemical reaction of gas-solid two-phase material obtain crosslinkedly more fully, thereby once desulfurization efficient can be significantly improved.This equipment is reliable, and energy consumption is low, easy maintenance, and operating cost is low.In installation and operation to boiler plant and the operation almost without any interference.Unit of this equipment and complete property are very strong to the adaptability of boiler capacity, can be specially adapted to the national conditions that China has a large amount of medium small boilers by size configure one cover or a few covering device of boiler capacity.This equipment need not to take excessive area.
Description of drawings
Accompanying drawing is the utility model structural representation.
1 aluminium alloy high energy acclerator chamber body, 2 compressed air input pipes, 3 powder-air mixed output tubes, 4 negative pressure cavities, 5 powder absorbing pipes, 6 ports.
The specific embodiment
Coal burning flue gas desulfurization agent Ca (OH)
2The powder high-efficiency accelerative powder adsorption pump, body 1 middle part, aluminium alloy high energy acclerator chamber is a negative pressure cavity 4, and negative pressure cavity is communicated with compressed air input pipe 2, powder-air mixed output tube 3 by screw thread respectively, and negative pressure cavity is communicated with powder absorbing pipe 5; The diameter of the air inlet port of compressed air input pipe is greater than the diameter of the port 6 of giving vent to anger.
Claims (2)
1, a kind of coal burning flue gas desulfurization agent Ca (OH)
2The powder high-efficiency accelerative powder adsorption pump is characterized in that aluminium alloy high energy acclerator chamber body (1) middle part is negative pressure cavity (4), and negative pressure cavity is communicated with compressed air input pipe (2), powder-air mixed output tube (3) and powder absorbing pipe (5) respectively; The diameter of the air inlet port of compressed air input pipe is greater than the diameter of the port of giving vent to anger (6); Compressed air input pipe (2) and powder-air mixed output tube (3) are fixedlyed connected aluminium alloy high energy acclerator chamber body (1) respectively.
2, according to the described coal burning flue gas desulfurization agent of claim 1 Ca (OH)
2The powder high-efficiency accelerative powder adsorption pump is characterized in that compressed air input pipe (2) is connected aluminium alloy high energy acclerator chamber body (1) with powder-air mixed output tube (3) respectively by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01255078 CN2516839Y (en) | 2001-12-04 | 2001-12-04 | Smoke desulfurizing agent Ca(OH)2 powder high energy auelerating powder adsorption pump for coal fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01255078 CN2516839Y (en) | 2001-12-04 | 2001-12-04 | Smoke desulfurizing agent Ca(OH)2 powder high energy auelerating powder adsorption pump for coal fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2516839Y true CN2516839Y (en) | 2002-10-16 |
Family
ID=33664282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01255078 Expired - Fee Related CN2516839Y (en) | 2001-12-04 | 2001-12-04 | Smoke desulfurizing agent Ca(OH)2 powder high energy auelerating powder adsorption pump for coal fired boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2516839Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283741A (en) * | 2020-10-30 | 2021-01-29 | 陕西能源赵石畔煤电有限公司 | Device for preventing corrosion of water cooled wall of high-sulfur coal million units boiler |
-
2001
- 2001-12-04 CN CN 01255078 patent/CN2516839Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283741A (en) * | 2020-10-30 | 2021-01-29 | 陕西能源赵石畔煤电有限公司 | Device for preventing corrosion of water cooled wall of high-sulfur coal million units boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |