CN2767442Y - Lime hydrate preparation apparatus for drying method flue gas desulfurization system - Google Patents
Lime hydrate preparation apparatus for drying method flue gas desulfurization system Download PDFInfo
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- CN2767442Y CN2767442Y CN 200420121013 CN200420121013U CN2767442Y CN 2767442 Y CN2767442 Y CN 2767442Y CN 200420121013 CN200420121013 CN 200420121013 CN 200420121013 U CN200420121013 U CN 200420121013U CN 2767442 Y CN2767442 Y CN 2767442Y
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- lime
- reaction tower
- flue gas
- lime reaction
- desulphurization system
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Abstract
The utility model relates to a lime hydrate preparing apparatus for a drying-method flue gas desulfurizing system, which belongs to the technical field of flue gas desulfurization. The lower part of a lime reaction tower of the utility model is provided with a Venturi section which is connected with a raw material bin. A quick lime inlet is arranged on the raw material bin, and the bottom end of the raw material bin is a cone on which a fluidized air inlet is arranged. A plurality of layers of water sprayers in alternate arrangement are arranged in the lime reaction tower. An outlet of the upper part of the lime reaction tower is connected with a lower air-exhaust cyclone separator, and the bottom surface of the lower air-exhaust cyclone separator is an inclined plane on which an exhaust pipe is arranged. The bottom of the inclined plane is provided with a double channel controlled to open and close by a bidirectional control valve, one side of the double channel is connected with an inclined air slot, the other end of the inclined air slot is connected with the lower part of the lime reaction tower and the other side of the double channel is connected with an auger for conveying finished products. The utility model has the advantages of reasonable design and low cost, and can be applied to reducing the running cost of flue gas desulfurizing systems.
Description
Technical field
The utility model belongs to the flue gas desulfurization technique field, especially for the device of the slaked lime of dry flue gas desulphurization system preparation.
Background technology
Sulfurous gas is one of principal pollutant that cause problem of environmental pollutions such as Greenhouse effect, acid rain.China's energy structure fire coal for a long time accounts for more than 70% always, and in foreseeable future, China is that the energy structure of main energy sources can not obtain radical change with the coal, and using in a large number of coal produces a large amount of pollutents such as sulfurous gas.At present, China's sulfurous gas annual emissions is first place, the world, position, has a strong impact on the Sustainable development of Chinese national economy.
The flue gas desulfurization of prior art can be divided into wet method and dry method (semidrying) two big classes.Wet process of FGD technology (WFGD), though the desulfuration efficiency height, complex process, resistance are bigger, one-time investment is big, working cost is high, floor space is big.And the desulfurization product of dry flue gas desulphurization is a dry powder, can well overcome some problem and shortage of wet desulphurization.Along with the research and development of Technology, the particularly development of circulating fluid bed flue-gas desulfurizing technology, the dry flue gas desulphurization technology has obtained application more and more widely.In dry method flue gas desulfur device, sweetening agent sprays into the absorption tower with dry powder, and water sprays into by water spouting nozzle, and sweetening agent is slaked lime powder normally.For the dry flue gas desulphurization technology, the size of sorbent particle particle diameter and surface-active height are the important factors that influences the height of the utilization ratio of sweetening agent in its desulphurization system and desulfurization degree.Yet present circulating fluid bed flue-gas desulfurizing technology mostly utilizes slaked lime powder that the non-fluidization mode produces as sweetening agent, is exactly the usual way of producing slaked lime at present as Chinese patent ZL01275451.X disclosed " a kind of quicklime slaking device ".These slaked lime powders not only price are higher, and particle diameter is bigger, and surfactivity is poor, and are very low in the utilization ratio of the sorbent particle of thionizer internal reaction, and desulfurization degree is not high simultaneously, increased the working cost of desulphurization system.
Summary of the invention
At above-mentioned problems of the prior art, the purpose of this utility model provides that a kind of adaptability of restricted condition that exists in actual applications is stronger, the device of the slaked lime preparation that is used for the dry flue gas desulphurization system that digestive efficiency is higher.The utility model is reasonable in design, equipment cost is low, uses the running cost that the utility model can reduce flue gas desulphurization system greatly.
In order to realize above-mentioned goal of the invention, the technical solution of the utility model realizes as follows:
A kind of device that is used for the slaked lime preparation of dry flue gas desulphurization system, it comprises that the lime reaction tower reaches air draft cyclonic separator down.Its constructional feature is that the bottom of described lime reaction tower is provided with the Venturi section, the connection of Venturi Duan Yuyuan feed bin.Be equipped with the unslaked lime import on the former feed bin, the bottom of former feed bin is a cone, is equipped with the fluidized wind import on the cone.Be provided with the spaced apart water-jet of multilayer in the lime reaction tower.The outlet of lime reaction tower top is connected with described air draft cyclonic separator down, and the bottom surface of following air draft cyclonic separator is a tapered plane, is equipped with vapor pipe on the tapered plane.The bottom of tapered plane is equipped with the two channels that is opened and closed by two-way control valve control, and a twin-channel side connects air flume, and the air flume the other end is connected with lime reaction tower bottom, and twin-channel opposite side connects the auger of carrying finished product.
In above-mentioned device, be provided with three layers of spaced apart water-jet in the described lime reaction tower, water-jet adopts two-fluid spray nozzle to be arranged in lime reaction tower center.
In above-mentioned device, the outlet of described lime reaction tower top is 300～500mm with the interior upper surface of lime reaction tower distance.
In above-mentioned device, the bottom of described cone is equipped with the ash port that is opened and closed by control valve control.
In above-mentioned device, described each control valve is a star valve.
Compare with currently used non-fluidization quicklime slaking device, advantage of the present utility model is:
The first, the utility model apparatus structure compactness, resistance is little.
The second, the utility model adopts multi-level water spray, can avoid wall sticking phenomenon to take place, and water loss reduces.
The 3rd, unslaked lime is through the circulation digestion reaction, and utilization ratio improves.
The 4th, the finished product slaked lime is the dry powder attitude, and particle diameter accounts for more than 80% less than the particle of 30um, is convenient to store.
The 5th, the utility model device can be directly and desulphurization system connect, operation continuously improves the stability of desulphurization system operation simultaneously, reduces the running cost of flue gas desulphurization system.
Below in conjunction with accompanying drawing and concrete embodiment the utility model is described further.
Description of drawings
Accompanying drawing is a structure principle chart of the present utility model.
Embodiment
Referring to accompanying drawing, the utility model comprises that lime reaction tower 5 reaches air draft cyclonic separator 6 down.The bottom of lime reaction tower 5 is provided with Venturi section 3, and Venturi section 3 is connected with former feed bin 12.Be equipped with unslaked lime import 1 on the former feed bin 12, the bottom of former feed bin 12 is a cone 14, is equipped with fluidized wind import 2 on the cone 14, and the bottom of cone 14 is equipped with the ash port 13 by the control valve 7 control switchings of star.Be provided with three layers of spaced apart water-jet 4 in the lime reaction tower 5, water-jet 4 adopts two-fluid spray nozzle to be arranged in lime reaction tower 5 centers.The outlet of lime reaction tower 5 tops is connected with described air draft cyclonic separator 6 down, the bottom surface of following air draft cyclonic separator 6 is a tapered plane 10, be equipped with vapor pipe 11 on the tapered plane 10, the outlet of lime reaction tower 5 tops is 300～500mm with lime reaction tower 5 interior upper surface distances.The bottom of tapered plane 10 is equipped with the two channels 15 that is opened and closed by 7 controls of two-way star control valve, and a side of two channels 15 connects air flume 8, and air flume 8 the other ends are connected with lime reaction tower 5 bottoms, and the opposite side of two channels 15 connects the auger 9 of carrying finished product.
When the utility model device used, its workflow was:
1) normal temperature air with the heater via heating blasts the formation fluidized wind with gas blower, fluidized wind mixes back formation fluidized mixture by the fluidizing velocity input of the fluidized wind import 2 on the lime reaction tower 5 bottom cones 14 with 1～10m/s with the unslaked lime material that the unslaked lime import 1 on the lime reaction tower 5 lower feed storehouses 12 is imported.
2) the Venturi section 3 of fluidized mixture process lime reaction tower 5 is with the fluidizing velocity diffusion of 14～18m/s, with three layers of water spray system generation digestion reactions formation digestion reaction thing of centers employing two-fluid spray nozzles layout in the lime reaction tower 5.
3) the digestion reaction thing forms slaked lime along with gas enters down air draft cyclonic separator 6.
4) slaked lime of quality major part is input to by air flume 8 and realizes recirculation in the lime reaction tower 5, the slaked lime of quality smaller portions is transported to the slaked lime finished bin by control valve 7 through auger 9 and stores, and the weary gas in the following air draft cyclonic separator 6 can directly be sent into the desulfurization reaction tower inlet.
Claims (5)
1, a kind of device that is used for the slaked lime preparation of dry flue gas desulphurization system, it comprises that lime reaction tower (5) reaches air draft cyclonic separator (6) down, it is characterized in that, the bottom of described lime reaction tower (5) is provided with Venturi section (3), Venturi section (3) is connected with former feed bin (12), be equipped with unslaked lime import (1) on the former feed bin (12), the bottom of former feed bin (12) is cone (14), be equipped with fluidized wind import (2) on the cone (14), be provided with the spaced apart water-jet of multilayer (4) in the lime reaction tower (5), the outlet of lime reaction tower (5) top is connected with described air draft cyclonic separator (6) down, the bottom surface of following air draft cyclonic separator (6) is tapered plane (10), be equipped with vapor pipe (11) on the tapered plane (10), the bottom of tapered plane (10) is equipped with the two channels (15) that is opened and closed by two-way control valve (7) control, one side of two channels (15) connects air flume (8), air flume (8) the other end is connected with lime reaction tower (5) bottom, and the opposite side of two channels (15) connects the auger (9) of carrying finished product.
2, according to the described device that is used for the slaked lime preparation of dry flue gas desulphurization system of claim 1, it is characterized in that, be provided with three layers of spaced apart water-jet (4) in the described lime reaction tower (5), water-jet (4) adopts two-fluid spray nozzle to be arranged in lime reaction tower (5) center.
According to the described device that is used for the slaked lime preparation of dry flue gas desulphurization system of claim 2, it is characterized in that 3, the outlet of described lime reaction tower (5) top is 300～500mm with the interior upper surface of lime reaction tower (5) distance.
4, according to claim 1, the 2 or 3 described devices that are used for the slaked lime preparation of dry flue gas desulphurization system, it is characterized in that the bottom of described cone (14) is equipped with the ash port (13) that is opened and closed by control valve (7) control.
5, according to the described device that is used for the slaked lime preparation of dry flue gas desulphurization system of claim 4, it is characterized in that described each control valve (7) is a star valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420121013 CN2767442Y (en) | 2004-12-29 | 2004-12-29 | Lime hydrate preparation apparatus for drying method flue gas desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420121013 CN2767442Y (en) | 2004-12-29 | 2004-12-29 | Lime hydrate preparation apparatus for drying method flue gas desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2767442Y true CN2767442Y (en) | 2006-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420121013 Expired - Fee Related CN2767442Y (en) | 2004-12-29 | 2004-12-29 | Lime hydrate preparation apparatus for drying method flue gas desulfurization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2767442Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110385005A (en) * | 2019-08-28 | 2019-10-29 | 华能国际电力股份有限公司 | A kind of efficient digestive system suitable for semi-dry desulphurization |
-
2004
- 2004-12-29 CN CN 200420121013 patent/CN2767442Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110385005A (en) * | 2019-08-28 | 2019-10-29 | 华能国际电力股份有限公司 | A kind of efficient digestive system suitable for semi-dry desulphurization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 100083 A, block 2907, Tongfang science and Technology Plaza, Beijing Co-patentee after: Tsinghua Tongfang Environment Co., Ltd. Patentee after: Tsinghua University Co-patentee after: Tongfang Co., Ltd. Address before: 100083 A, block 2907, Tongfang science and Technology Plaza, Beijing Co-patentee before: Tsinghua Tongfang Environment Co., Ltd. Patentee before: Tsinghua University Co-patentee before: Qinghua Tongfang Co., Ltd. |
|
| 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 |