CN202356015U - Device for preparing high-activity slaked lime by carbide slag alkali residue - Google Patents
Device for preparing high-activity slaked lime by carbide slag alkali residue Download PDFInfo
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- CN202356015U CN202356015U CN2011204056455U CN201120405645U CN202356015U CN 202356015 U CN202356015 U CN 202356015U CN 2011204056455 U CN2011204056455 U CN 2011204056455U CN 201120405645 U CN201120405645 U CN 201120405645U CN 202356015 U CN202356015 U CN 202356015U
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- carbide slag
- calcium hydroxide
- utilizes
- prepare
- slaked lime
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Abstract
The utility model discloses a device for preparing high-activity slaked lime by carbide slag alkali residue. The device comprises sodium bicarbonate metering and feeding equipment, carbide slag feeding equipment and a mixing tank, a carbide slag screw conveyer, a dryer, a crusher, an air flow sorter, a dust remover and a collection bin which are connected with one another sequentially, wherein the sodium bicarbonate metering and feeding equipment and the carbide slag feeding equipment are connected with the mixing tank. The device has the advantages that a developed micropore structure is formed in slaked lime particles, so that the specific surface area of the slaked lime is increased, and the reaction activity is improved; when the high-activity slaked lime is used as a desulfuration absorbent, the desulfuration efficiency is improved by 5 to 10 percent; and therefore, the consumption of the absorbent and the running cost of desulfuration are reduced.
Description
Technical field
The utility model relates to a kind of device that utilizes the carbide slag alkaline residue to prepare the high activity calcium hydroxide.
Background technology
There is huge chlorine industry in China, a large amount of calcium carbide waste soda residue of annual generation, according to investigations; Fully utilize not highly, stack and to take a large amount of soils, also cause secondary fly-up simultaneously; Make that fine particle obviously increases in the atmospheric environment, have a strong impact on people's health, on the other hand; Along with alkaline residue is poured water system, stop up the river course, cause serious river pollution.Simultaneously, the key component of carbide slag is a calcium hydroxide, is a kind of good desulfurizing agent.
The method and apparatus of the carbide slag system desulfurizing agent of at present having developed; Its shortcoming is the carbide slag of cream pasty state or is solid-state very difficult pulverizing of carbide slag particle that the returning charge ratio is high, powder process operating cost height; The inner pore structure of the slaked lime powder that makes is few; Specific area is little, about 12～17m2/g, does the active low of desulfurizing agent.
The utility model content
The purpose of the utility model is to provide a kind of device and method that utilizes the carbide slag alkaline residue to prepare the high activity calcium hydroxide; Can effectively solve the carbide slag particle is difficult to pulverize; Returning charge is than high, and powder process operating cost is high, and the inner pore structure of the slaked lime powder that makes is few; Specific area is little, makes the active low problem of desulfurizing agent.
In order to solve the problems of the technologies described above; The utility model is realized through following technical scheme: a kind of device that utilizes the carbide slag alkaline residue to prepare the high activity calcium hydroxide; Comprise sodium acid carbonate metering adding equipment, carbide slag adding equipment; Also comprise the mixing channel, carbide slag conveyor screw machine, drier, disintegrating machine, airflow separator, deduster, the collecting bin that link to each other successively, said sodium acid carbonate metering adding equipment, carbide slag adding equipment all link to each other with mixing channel.
Preferably, also be provided with air blast between said drier and the disintegrating machine; Make things convenient for mass transport to carry.
Preferably, said deduster is a sack cleaner; It is high to collect calcium hydroxide efficient, and simple in structure, easy to maintenance, cost is low.
Preferably, also be connected with air-introduced machine on the said deduster; Gas is drawn from deduster.
Preferably, the bottom of said airflow separator also is connected with coarse fodder foldback screw machine, and the outlet of said coarse fodder foldback screw machine links to each other with disintegrating machine; Will thicker material returning disintegrating machine pulverizes again.
Preferably, said mixing channel adopts twin shaft to stir, two axle move toward one another, and the rotating speed of twin shaft is 60～80rpm/min; Sodium acid carbonate and carbide slag can fully be mixed.
Compared with prior art; The utility model has the advantages that: make inner flourishing microcellular structure, the specific area of increase calcium hydroxide, the raising reactivity of forming of hydrated lime particle; When using as desulfurization absorbent; Can make desulfuration efficiency improve 5%～10%, thereby reduce the consumption of absorbent, reduce the desulfurization operation cost.
Description of drawings
Fig. 1 utilizes the connection sketch map of the device that the carbide slag alkaline residue prepares the high activity calcium hydroxide for the utility model is a kind of.
The specific embodiment
Consult a kind of device that utilizes the carbide slag alkaline residue to prepare the high activity calcium hydroxide of Fig. 1; Comprise sodium acid carbonate metering adding equipment 1, carbide slag adding equipment 2; Also comprise the mixing channel 3, carbide slag conveyor screw machine 4, drier 5, disintegrating machine 7, airflow separator 8, deduster 10, the collecting bin 11 that link to each other successively; Said sodium acid carbonate metering adding equipment 1, carbide slag adding equipment 2 all link to each other with mixing channel 3, and the bottom of airflow separator 8 also is connected with coarse fodder foldback screw machine 9, and the outlet of said coarse fodder foldback screw machine 9 links to each other with disintegrating machine 7; Also be provided with air blast 6 between said drier 5 and the disintegrating machine 7, also be connected with air-introduced machine 12 on the deduster 10.
Above-mentioned deduster 10 is a sack cleaner, and above-mentioned mixing channel 3 adopts twin shaft to stir two axle move toward one another; The rotating speed of twin shaft is 60～80rpm/min; The structure of the agitating member of said drier 5 is the intermittent type blade, and edge axle shape in the shape of a spiral arranges that blade is 70 °～85 ° inclination angle with axle.
A kind of method of utilizing the carbide slag alkaline residue to prepare the high activity calcium hydroxide may further comprise the steps successively:
A, in sodium acid carbonate metering adding equipment 1, add saturated sodium bicarbonate solution under the normal temperature, adding carbide slags in the carbide slag adding equipment 2;
B, sodium bicarbonate solution and carbide slag add mixing channel 3 together and mix, and the sodium bicarbonate solution addition is 3%～5% of a carbide slag weight;
The material that C, process step B mix is delivered to drier 5 through carbide slag conveyor screw machine 4; The temperature of drier 5 leading portions is 80～90 ℃; The temperature of drier 5 back segments is 130～150 ℃; Material is 0.3～0.4 at the ratio of time of staying of leading portion and dry total time, and material gets into back segment from the leading portion of drier 5, sends in the disintegrating machine 7 through air blast 6 then;
Material after D, 7 fragmentations of process disintegrating machine gets into airflow separator 8, and trickle material is collected entering collecting bins 11 by deduster 10 becomes finished product.
Drier 5 Steam Heating or electrical heating among the above-mentioned steps C.
Coarse granule under being removed by airflow separator 8 is then sent into disintegrating machine 7 by coarse fodder foldback screw machine 9 and is carried out fragmentation again, and excessive not breakable material is then regularly discharged by the meal material floss hole of coarse fodder foldback screw machine 9.
Drier 5 leading portion major functions are to realize the thermal decomposition of sodium acid carbonate, make calcium hydroxide form flourishing fine porous structure, and the major function of drier 5 back segments is to realize the drying of calcium hydroxide; Through in carbide slag alkaline residue raw material, adding saturated sodium bicarbonate solution; Make inner flourishing microcellular structure, the specific area of increase calcium hydroxide, the raising reactivity of forming of hydrated lime particle; When using as desulfurization absorbent; Can make desulfuration efficiency improve 5%～10%, thereby reduce the consumption of absorbent, reduce the desulfurization operation cost.
The above is merely the specific embodiment of the utility model; But the technical characterictic of the utility model is not limited thereto; Any those skilled in the art is in the field of the utility model, and variation of being done or modification all are encompassed among the claim of the utility model.
Claims (6)
1. device that utilizes the carbide slag alkaline residue to prepare the high activity calcium hydroxide; It is characterized in that: comprise sodium acid carbonate metering adding equipment (1), carbide slag adding equipment (2); Also comprise the mixing channel (3), carbide slag conveyor screw machine (4), drier (5), disintegrating machine (7), airflow separator (8), deduster (10), the collecting bin (11) that link to each other successively, said sodium acid carbonate metering adding equipment (1), carbide slag adding equipment (2) all link to each other with mixing channel (3).
2. a kind of device that utilizes the carbide slag alkaline residue to prepare the high activity calcium hydroxide as claimed in claim 1 is characterized in that: also be provided with air blast (6) between said drier (5) and the disintegrating machine (7).
3. a kind of device that utilizes the carbide slag alkaline residue to prepare the high activity calcium hydroxide as claimed in claim 1 is characterized in that: said deduster (10) is a sack cleaner.
4. a kind of device that utilizes the carbide slag alkaline residue to prepare the high activity calcium hydroxide as claimed in claim 3 is characterized in that: also be connected with air-introduced machine (12) on the said deduster (10).
5. a kind of device that utilizes the carbide slag alkaline residue to prepare the high activity calcium hydroxide as claimed in claim 1; It is characterized in that: the bottom of said airflow separator (8) also is connected with coarse fodder foldback screw machine (9), and the outlet of said coarse fodder foldback screw machine (9) links to each other with disintegrating machine (7).
6. a kind of device that utilizes the carbide slag alkaline residue to prepare the high activity calcium hydroxide as claimed in claim 1 is characterized in that: said mixing channel (3) adopts twin shaft to stir, two axle move toward one another, and the rotating speed of twin shaft is 60～80rpm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204056455U CN202356015U (en) | 2011-10-24 | 2011-10-24 | Device for preparing high-activity slaked lime by carbide slag alkali residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204056455U CN202356015U (en) | 2011-10-24 | 2011-10-24 | Device for preparing high-activity slaked lime by carbide slag alkali residue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202356015U true CN202356015U (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204056455U Withdrawn - After Issue CN202356015U (en) | 2011-10-24 | 2011-10-24 | Device for preparing high-activity slaked lime by carbide slag alkali residue |
Country Status (1)
| Country | Link |
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| CN (1) | CN202356015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423624A (en) * | 2011-10-24 | 2012-04-25 | 浙江菲达脱硫工程有限公司 | Apparatus and method for preparing high-activity calcium hydroxide by using carbide slag alkali residue |
-
2011
- 2011-10-24 CN CN2011204056455U patent/CN202356015U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423624A (en) * | 2011-10-24 | 2012-04-25 | 浙江菲达脱硫工程有限公司 | Apparatus and method for preparing high-activity calcium hydroxide by using carbide slag alkali residue |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120801 Effective date of abandoning: 20130904 |
|
| RGAV | Abandon patent right to avoid regrant |