CN101279127A - Flyash solidification system - Google Patents
Flyash solidification system Download PDFInfo
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- CN101279127A CN101279127A CNA2008100255791A CN200810025579A CN101279127A CN 101279127 A CN101279127 A CN 101279127A CN A2008100255791 A CNA2008100255791 A CN A2008100255791A CN 200810025579 A CN200810025579 A CN 200810025579A CN 101279127 A CN101279127 A CN 101279127A
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Abstract
The invention provides a fly ash curing system. Fly ash, chelating agent and water are fully mixed, stirred and squeezed, so that heavy metal in the fly ash is completely collected and produced stabilized products form polymers more compact in structure than that before the treatment and the adhesion exists between fly ash particles, which results in that the heavy metal in the fly ash can be stabilized for a long time and the activity of the heavy metal in the fly ash when the refuse is burned can be greatly reduced. In addition, the stabilized products have long-term stability in a sanitary landfill and achieve the pollution control standard for domestic waste landfill disposal and can be applied to the landfill disposal for a common sanitary landfill site.
Description
Technical field
The present invention relates to the flying ash treatment technology, particularly relate to a kind of flyash curing system.
Background technology
Along with China's rapid development of economy, the output of municipal solid wastes is increased sharply.Since destructive strong, the volume of organic toxicity of municipal solid wastes subtracted hold obviously, advantage such as energy recovery, the burning electricity generation technology has become the important development direction of some soil anxieties of China, big city disposal of refuse that the municipal solid wastes organic principle is high at present.But municipal solid wastes burns flying ash that the back produces wherein enrichment the pollutants such as heavy metal of the easy diafiltration of high concentration, be regarded as danger wastes, for reducing the secondary pollution that flying ash causes environment, must carry out appropriate processing to it.
At present, the processing method of flying ash generally all is to adopt cement solidification.The concrete operations of cement solidification method: flying ash is packed in the storage tank, add cement and water simultaneously, flying ash, cement and water are stirred, make it solidify caking, carry out landfill then by double helix.
There is following defective in prior art: stir insufficient, the proportioning adjustability of flying dust, cement, water is whole poor, do not pass through shaping and drying and health, and chloride content is higher in the flying dust, a large amount of existence of villaumite have tangible interference effect to cement solidification, this technology is not to solidification effect not clearly, simultaneously, also there is negative effect in flying dust to aspects such as the sclerosis of cement, compression strength, this may be that particle size dispersion degree, inorganic salts (chloride, sulfide) and the alkaline matter content height of flying dust caused; In the flyash cement slurry, find a kind of material of similar sial vanadium, can cause the compression strength of firming body to reduce greatly, these problems will have influence on the stability of the long-term behaviour of flyash curing body, a huge sum of money that solidifies in the flying dust of back will leach again, influence environment, in addition, adopt cement solidification technology certainly will increase the volume of handling product greatly, cause the waste of final disposal field storage capacity.
Summary of the invention
At above-mentioned defective, flyash curing system provided by the invention, the intercalating agent and the water that utilize intercalating agent and water mixing and feeding apparatus to mix in proportion join in the flying dust mixing roll, and it is mixed with flying dust in the flying dust mixing roll, stir and moulding, finally form solid particle.
Flyash curing system provided by the invention, comprise flying dust feed pipe (1), storage bin for flyash (2), constant feeder (3), screw(-type) feeder (4), flying dust mixing roll (5), health belt feeder (6), intercalating agent and water mixing and feeding apparatus (8) and air compression drying device (9), the outlet of described flying dust feed pipe (1) is connected with the import of described storage bin for flyash (2), the outlet of described storage bin for flyash (2) is connected with the import of described constant feeder (3), the outlet of described constant feeder (3) is connected with the import of described screw(-type) feeder (4), the outlet of described screw(-type) feeder (4) is connected with the charging aperture of described flying dust mixing roll (5), the discharging opening of described flying dust mixing roll (5) connects described health belt feeder (6), and the charging aperture of described mixing roll (5) also connects the delivery outlet of described intercalating agent and water mixing and feeding apparatus (8).
Preferably, also comprise the heating ventilating dust-arrester (7) that is connected with above-mentioned health belt feeder (6).
The concrete operation principle of flyash curing system provided by the invention is: the flying dust transport vehicle is transported in the storage bin for flyash by quick tieing and flying dust feed pipe, storage bin for flyash plays temporary transient storage flying dust, the outlet of storage bin for flyash is connected with the import of constant feeder, constant feeder exports continuously equably to the screw(-type) feeder feed by it, screw(-type) feeder is given by the rotation of spiral and is expected the flying dust mixing roll, the intercalating agent and the water that will mix in proportion by intercalating agent and water mixing and feeding apparatus also join in the flying dust mixing roll, the flying dust mixing roll is with intercalating agent, the mixture of water fully mixes with flying dust, stir, carry, moulding, material after the moulding is used for landfill to health belt feeder dry forming behind the dried solid particle.
In preferred version of the present invention, rest the riempie machine and be connected with the heating ventilating dust-arrester, accelerated the drying of the material after the moulding, prevent the leakage of a small amount of flying dust simultaneously.
In sum, flyash curing system provided by the invention, by abundant mixing, stirring and extruding to flying dust, intercalating agent and water, heavy metal in the flying dust is fully captured, the stabilisation product that generates has formed than condensate fine and close more before handling, adhesion phenomenon has taken place between the fly ash granule, heavy metal in the energy flying dust steady in a long-term, reduce the activity of heavy metal in the flying ash greatly, the stabilisation product has long-term stability in sanitary filling field, reach consumer waste filling and embedding and pollute control criterion, can enter general sanitary filling field landfill.
Description of drawings
Fig. 1 is system's connection diagram of the embodiment of the invention.
The specific embodiment
Fig. 1 is system's connection diagram of the specific embodiment of the invention, below in conjunction with Fig. 1 the embodiment of the invention is introduced.
As shown in Figure 1, the flyash curing system that the embodiment of the invention provides, comprise flying dust feed pipe (1), storage bin for flyash (2), constant feeder (3), screw(-type) feeder (4), flying dust mixing roll (5), health belt feeder (6), intercalating agent and water mixing and feeding apparatus (8) and air compression drying device (9), the outlet of described flying dust feed pipe (1) is connected with the import of described storage bin for flyash (2), the outlet of described storage bin for flyash (2) is connected with the import of described constant feeder (3), the outlet of described constant feeder (3) is connected with the import of described screw(-type) feeder (4), the outlet of described screw(-type) feeder (4) is connected with the charging aperture of described flying dust mixing roll (5), the discharging opening of described flying dust mixing roll (5) connects described health belt feeder (6), the charging aperture of described mixing roll (5) also connects the delivery outlet of described intercalating agent and water mixing and feeding apparatus (8), also comprises the heating ventilating dust-arrester (7) that is connected with above-mentioned health belt feeder (6).
The flying dust transport vehicle is transported in the storage bin for flyash by quick tieing and flying dust feed pipe, storage bin for flyash plays temporary transient storage flying dust, the outlet of storage bin for flyash is connected with the import of constant feeder, constant feeder exports continuously equably to the screw(-type) feeder feed by it, screw(-type) feeder is given by the rotation of spiral and is expected the flying dust mixing roll, the intercalating agent and the water that will mix in proportion by intercalating agent and water mixing and feeding apparatus also join in the flying dust mixing roll, the flying dust mixing roll is with intercalating agent, the mixture of water fully mixes with flying dust, stir, carry, moulding, material after the moulding is to health belt feeder dry forming, be used for landfill behind the dried solid particle, the health belt feeder is connected with the heating ventilating dust-arrester, accelerate the drying of the material after the moulding, prevented the leakage of a small amount of flying dust simultaneously.
In sum, flyash curing system provided by the invention, by abundant mixing, stirring and extruding to flying dust, intercalating agent and water, heavy metal in the flying dust is fully captured, the stabilisation product that generates has formed than condensate fine and close more before handling, adhesion phenomenon has taken place between the fly ash granule, heavy metal in the energy flying dust steady in a long-term, reduce the activity of heavy metal in the flying ash greatly, the stabilisation product has long-term stability in sanitary filling field, reach consumer waste filling and embedding and pollute control criterion, can enter general sanitary filling field landfill.
Claims (2)
1, a kind of flyash curing system, it is characterized in that, comprise flying dust feed pipe (1), storage bin for flyash (2), constant feeder (3), screw(-type) feeder (4), flying dust mixing roll (5), health belt feeder (6), intercalating agent and water mixing and feeding apparatus (8) and air compression drying device (9), the outlet of described flying dust feed pipe (1) is connected with the import of described storage bin for flyash (2), the outlet of described storage bin for flyash (2) is connected with the import of described constant feeder (3), the outlet of described constant feeder (3) is connected with the import of described screw(-type) feeder (4), the outlet of described screw(-type) feeder (4) is connected with the charging aperture of described flying dust mixing roll (5), the discharging opening of described flying dust mixing roll (5) connects described health belt feeder (6), and the charging aperture of described mixing roll (5) also connects the delivery outlet of described intercalating agent and water mixing and feeding apparatus (8).
2, flyash curing system according to claim 1 is characterized in that, also comprises the heating ventilating dust-arrester (7) that is connected with above-mentioned health belt feeder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100255791A CN101279127A (en) | 2008-05-08 | 2008-05-08 | Flyash solidification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100255791A CN101279127A (en) | 2008-05-08 | 2008-05-08 | Flyash solidification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101279127A true CN101279127A (en) | 2008-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100255791A Pending CN101279127A (en) | 2008-05-08 | 2008-05-08 | Flyash solidification system |
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| CN (1) | CN101279127A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644437B (en) * | 2009-08-17 | 2011-01-05 | 江苏亿金环保设备工程有限公司 | Flue gas purifying system and method |
| CN102652950A (en) * | 2012-03-01 | 2012-09-05 | 武汉致衡环境安全工程技术有限公司 | Garbage burning fly ash solidification treatment system for continuous dry-wet component mixed compaction molding |
| CN102773246A (en) * | 2012-07-31 | 2012-11-14 | 沈阳航空航天大学 | Method for solidifying/stabilizing treatment of fly ashes in incineration of medical wastes |
| CN103831040A (en) * | 2012-11-21 | 2014-06-04 | 上海环信环境工程有限公司 | Mixing roll |
| CN103831281A (en) * | 2012-11-21 | 2014-06-04 | 上海环信环境工程有限公司 | Fly ash stabilizing method |
-
2008
- 2008-05-08 CN CNA2008100255791A patent/CN101279127A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644437B (en) * | 2009-08-17 | 2011-01-05 | 江苏亿金环保设备工程有限公司 | Flue gas purifying system and method |
| CN102652950A (en) * | 2012-03-01 | 2012-09-05 | 武汉致衡环境安全工程技术有限公司 | Garbage burning fly ash solidification treatment system for continuous dry-wet component mixed compaction molding |
| CN102773246A (en) * | 2012-07-31 | 2012-11-14 | 沈阳航空航天大学 | Method for solidifying/stabilizing treatment of fly ashes in incineration of medical wastes |
| CN102773246B (en) * | 2012-07-31 | 2014-12-31 | 沈阳航空航天大学 | Method for solidifying/stabilizing treatment of fly ashes in incineration of medical wastes |
| CN103831040A (en) * | 2012-11-21 | 2014-06-04 | 上海环信环境工程有限公司 | Mixing roll |
| CN103831281A (en) * | 2012-11-21 | 2014-06-04 | 上海环信环境工程有限公司 | Fly ash stabilizing method |
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Open date: 20081008 |