CN204417300U - The device of cement kiln synergic processing anaerobically digested sludge - Google Patents
The device of cement kiln synergic processing anaerobically digested sludge Download PDFInfo
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- CN204417300U CN204417300U CN201520062505.0U CN201520062505U CN204417300U CN 204417300 U CN204417300 U CN 204417300U CN 201520062505 U CN201520062505 U CN 201520062505U CN 204417300 U CN204417300 U CN 204417300U
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- digested sludge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The device of cement kiln synergic processing anaerobically digested sludge, comprise the raw material grinding mill, bag collector, raw material homogenizing silo, precalcining system and the rotary kiln that connect in turn, described raw material grinding mill also connects conditioning tower, and the conditioning tower the other end is connected with precalcining system.Adopt device of the present utility model, the digested sludge that water content can be realized to reach 68 ~ 70% directly processes, through grinding and mummification in raw material grinding mill, kiln tail hot blast is used by the incoming stock mill of conditioning tower by precalcining system, save equipment and the energy, and its mummification moisture can be used for conditioning tower, reduce water consumption.Adopting device of the present utility model to carry out the process of anaerobically digested sludge without the need to carrying out residue and vent gas treatment, is environmentally friendly method.
Description
Technical field
The utility model relates to refuse reclamation field, is specifically related to a kind of device of cement kiln synergic processing anaerobically digested sludge.
Background technology
City sewage and sludge has that water ratio is high, volume is large, easily corruption, cacodorous feature, also concentrate the nutrition such as a large amount of organism, abundant nitrogen, phosphorus, heavy metal compound, toxic compounds, sterilant and a large amount of pathogenic agent and parasitic ovum etc. simultaneously, if suitably do not subtract appearance, stable or recycling treatment, easily cause large-scale secondary pollution.City sewage and sludge is the digested decomposition of organism in mud after Anaerobic Digestion, can make sludge stabilizing, makes it not easily corrupt.In addition, by anaerobic digestion, most of pathogenic bacteria or roundworm egg are killed or are decomposed as organism, make sewage sludge harmlessness.Current digested sludge is on a small quantity as afforestation Nutrition Soil, but as the problem that the existence of greening soil uses and demand is limited, so major part needs to carry out landfill disposal, not only occupy the limited storage capacity of landfill yard in a large number, also can produce a series of environmental protection and social concern.
The water ratio about 70% of digested sludge, compare water ratio compared with the city sewage and sludge of 85-90% moisture to decrease, but the water ratio of 70% is still very high, and this part water mostly is water in cell, be difficult to physical sepn, which increase the difficulty of digested sludge subsequent disposal.Decomposable asymmetric choice net in mud, perishableization amount of material reduce, and bacterium, pathogenic micro-organism, parasitic ovum are killed, and make mud sanitisation, stabilization, but still lingering section methanogen, soil ulmin and organic acid etc. in digested sludge.Mud is at anaerobic digestion process, and hydrogen sulfide is isolated sulfur molecule or is combined into iron sulphide with iron, and therefore postdigestive mud can not give out a foul smell again.The processing mode of current digested sludge is landfill and Land_use change, but this does not all make digested sludge obtain final harmless treatment.Therefore digested sludge enters landfill yard landfill is not long-term plan, needs to seek effective means more and makes digested sludge obtain final harmless treatment.
Cement kiln synergic processing digested sludge is the one of recycling sludge, the digested sludge stable in properties that mud produces after anaerobic digestion, organic content is low, can be added at the feed circuit of manufacture of cement by cement kiln synergic processing technology, namely the problem of digested sludge process in anaerobic digestion techniques is solved, digested sludge decrement is made to be zero, not only landfill cost and land resources can be saved, but also resource can be made to obtain recycle, turn waste into wealth, obtain " minimizing, innoxious, the resource utilization " that make digested sludge real processes.
Summary of the invention
For solving the anaerobically digested sludge process difficult problem existed in prior art, the utility model provides a kind of device of cement kiln synergic processing anaerobically digested sludge, namely the problem of digested sludge process in anaerobic digestion techniques is solved, digested sludge decrement is made to be zero, not only landfill cost and land resources can be saved, but also resource can be made to obtain recycle, turn waste into wealth.
The technical solution of the utility model is as follows:
The device of cement kiln synergic processing anaerobically digested sludge, comprise the raw material grinding mill, bag collector, raw material homogenizing silo, precalcining system and the rotary kiln that connect in turn, described raw material grinding mill also connects conditioning tower, and the conditioning tower the other end is connected with precalcining system.
In the technique of carrying out cement kiln synergic processing mud, mud generally adds at firing system, and moisture a large amount of in mud directly enters kiln burning and kiln tail oxygen concentration can be caused to reduce, and system temperature reduces, thus cause the problem such as the grog underproduction and hear rate rising, processing cost is increased.The device of cooperative disposal digested sludge of the present utility model, can add digested sludge at feed circuit, avoids and adds at firing system the problem such as the grog underproduction and hear rate rising caused.
The device of cement kiln synergic processing anaerobically digested sludge of the present utility model directly can process the digested sludge that water content reaches 68 ~ 70%.Digested sludge adds in raw material grinding mill together with cement raw material, through grinding and mummification in raw material grinding mill, after bag collector is collected, enters raw material homogenizing silo homogenizing, then enters rotary kiln by precalcining system and carry out burning and prepare cement.And device of the present utility model can first utilize kiln tail gas to carry out mummification to mud, reenters precalcining system and rotary kiln incineration, kiln tail hot blast passes through the incoming stock mill of conditioning tower by precalcining system.So namely, the stability of firing system can not be affected, mud also can be made to obtain recycling treatment.
Described cement raw material is the conventional raw material that prior art produces cement, and all can mix with digested sludge and jointly prepare cement as raw material, as Wingdale, clay, powdered iron ore and shale etc., the feeding quantity of described digested sludge is 1 ~ 5%.
In in rotary kiln, temperature is generally between 1350 DEG C-1650 DEG C, even higher, combustion gases, at this residence time > 8s, higher than residence time > 3s when 1100 DEG C, restrained effectively the formation of dioxin precursor.The total residence time of combustion gases is about 20s, and material is high turbulization state in kiln, therefore in the digested sludge in kiln, harmful organic substance can Thorough combustion, burning ratio can reach 99.9999%, even stable organism also can be completely broken down as dioxin etc., the practice disposing poisonous waste from domestic and international cement kiln shows, produces dioxin emission concentration far below emission limit after castoff burning.
Beneficial effect:
(1) device of the present utility model can realize the mud after by anaerobic digestion and carries out recycling, realizes turning waste into wealth;
(2) anaerobically digested sludge is passed through raw material grinding mill charging by device of the present utility model, loose to the water content requirement of mud raw material, mud is without the need to carrying out mummification in addition, in raw material grinding mill, kiln tail hot blast directly can be utilized to carry out mummification, solve in prior art the equipment and step that need multistage mummification, shorten technique, again save the energy;
(3) device Raw of the present utility model grinds direct-connected conditioning tower, and digested sludge can direct mummification in raw material grinding mill, and the aproll in the alternative raw material grinding mill of its moisture, has saved the water consumption of raw material grinding mill;
(4) calcining combustion gas dust reenters in kiln as cement raw material and calcines after kiln tail bagroom is collected, the waste flying dust that is safe from danger produces, inorganic component in mud is all cured in grog lattice in calcination process, final product is cement products, can not produce the residual residue needing secondary treatment;
(5) device of the present utility model is for the treatment of the mud through anaerobic digestion stabilization, and harmful substance contents is low, and drying tail gas need not process, and directly discharge can be up to standard.
Accompanying drawing explanation
Fig. 1. cement kiln synergic processing anaerobically digested sludge device of the present utility model;
Wherein, 1. digested sludge storage pool, 2. spiral pump, 3. raw material grinding mill, 4. bag collector, 5. raw material homogenizing silo, 6. precalcining system, 7. rotary kiln, 8. cooler, 9. clinker warehouse, 10. conditioning tower, 11. chimneys.
Embodiment
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
Embodiment 1
The device of cement kiln synergic processing anaerobically digested sludge is as shown in Figure 1: comprise the raw material grinding mill 3, bag collector 4, raw material homogenizing silo 5, precalcining system 6 and the rotary kiln 7 that connect in turn, described raw material grinding mill 3 also connects conditioning tower 10, and conditioning tower 10 the other end is connected with precalcining system 6.
When utilizing the device of embodiment 1 to carry out the process of anaerobically digested sludge, by water content be first 68 ~ 70% anaerobically digested sludge send into raw material grinding mill 3 by digested sludge storage pool 1 by spiral pump 2, Wingdale, the cement raw materials such as shale also add in raw material grinding mill 3 and mix with it, the addition of digested sludge is 3%, in raw material grinding mill 3, each material is through grinding and drying and other treatment, raw material homogenizing silo 5 is entered after bag collector 4 is collected, send into precalcining system 6 after homogenizing and carry out pre-thermolysis, enter rotary kiln 7 again to carry out burning and prepare cement, enter cooler 8 subsequently successively and who knows storehouse 9, cement products can be obtained.Raw material grinding mill 3 is also connected with conditioning tower 10, and the other end of conditioning tower 10 connects precalcining system 6.
In System Operation process, the kiln tail hot blast in rotary kiln 7 is successively by precalcining system 6, the incoming stock mill 3 of conditioning tower 10, and in order to mummification digested sludge, kiln tail hot blast is by being discharged by chimney 11 after bag collector 4, without the need to process, in line up to standard.
Owing to needing aproll when raw material grinding mill operates, it directly can utilize the moisture of mummification digested sludge in raw material grinding mill, decreases the water consumption of raw material grinding mill.
Claims (1)
1. the device of cement kiln synergic processing anaerobically digested sludge, it is characterized in that: comprise the raw material grinding mill (3), bag collector (4), raw material homogenizing silo (5), precalcining system (6) and the rotary kiln (7) that connect in turn, described raw material grinding mill (3) also connects conditioning tower (10), and conditioning tower (10) the other end is connected with precalcining system (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520062505.0U CN204417300U (en) | 2015-01-28 | 2015-01-28 | The device of cement kiln synergic processing anaerobically digested sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520062505.0U CN204417300U (en) | 2015-01-28 | 2015-01-28 | The device of cement kiln synergic processing anaerobically digested sludge |
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| Publication Number | Publication Date |
|---|---|
| CN204417300U true CN204417300U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520062505.0U Expired - Fee Related CN204417300U (en) | 2015-01-28 | 2015-01-28 | The device of cement kiln synergic processing anaerobically digested sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111617867A (en) * | 2020-05-13 | 2020-09-04 | 南阳中联卧龙水泥有限公司 | Raw material grinding system |
-
2015
- 2015-01-28 CN CN201520062505.0U patent/CN204417300U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111617867A (en) * | 2020-05-13 | 2020-09-04 | 南阳中联卧龙水泥有限公司 | Raw material grinding system |
| CN111617867B (en) * | 2020-05-13 | 2021-09-21 | 南阳中联卧龙水泥有限公司 | Raw material grinding system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20190128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |