CN204342637U - A kind of sludge dehydrating and drying device - Google Patents
A kind of sludge dehydrating and drying device Download PDFInfo
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- CN204342637U CN204342637U CN201420824374.0U CN201420824374U CN204342637U CN 204342637 U CN204342637 U CN 204342637U CN 201420824374 U CN201420824374 U CN 201420824374U CN 204342637 U CN204342637 U CN 204342637U
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Abstract
A kind of sludge dehydrating and drying device of the utility model public affairs, comprise closed kiln, gas collector, roasting kiln and chimney, mummification platform is provided with in described kiln, mummification mesa base is provided with the thermal source chamber fitted, and thermal source is provided with gas passage in chamber, and described gas collector is tubular type aeration structure, its one end is communicated with kiln, the other end is communicated with roasting kiln again, and the pneumatic outlet of roasting kiln is communicated with the thermal source inlet in above-mentioned thermal source chamber, and the thermal source outlet in thermal source chamber is communicated with chimney.The utility model utilizes high-temperature gas as the thermal source flue gas of sludge drying, mud and flue gas indirect heat exchange, effectively reduce the dual pollution of mud and flue gas, realize effective utilization of resource, environmental protection, mud is after the mummification of this device, its water ratio can be down to about 25% by 80%, has good mummification efficiency.Mud after mummification can mix with fire coal mixes burning, and the turning sludge into fuel realizing mud utilizes.
Description
Technical field
The utility model belongs to field of sludge treatment, is specifically related to a kind of sludge dehydrating and drying device.
Background technology
At present, in the method for sludge treatment, anhydration and incineration is one of preferred method, can realize minimizing rapidly and to greatest extent, the outlet not only having solved mud but also the energy reclaimed in mud, and need not consider the method for the inactivation treatment of pathogenic bacteria.In burning process, toxic pollutant is by pyroprocessing and oxidation, and the heavy metal activity in ashes reduces greatly.Therefore, the anhydration and incineration of mud has important practical significance and economic worth to innoxious, the recycling that realize mud.
The main energy consumption of sludge drying is at heat energy, the water ratio of mud is generally about 80%, the technique of traditional reduction moisture percentage in sewage sludge adopts drying equipment to carry out mummification to mud usually under 200-700 DEG C of high temperature, about making the water ratio mummification to 25% of mud from 80%, required heat energy consumption is very huge, and the expense of heat energy accounts for more than 80% of sludge treatment total expenses usually.On the other hand, the flue gas of the boiler emission such as thermal power plant, heat power plant is usually at about 150 DEG C, and fume afterheat can not get Appropriate application, not only reduces boiler efficiency, and produces thermal pollution to environment.Therefore, fume afterheat is re-used, for the dehydration and drying of mud, will greatly reduce the mummification cost of mud.
Publication number be CN1884160A patent discloses the system utilizing the direct dewatered sludge of coal-fired plant flue gas, the waste heat of flue gas can effectively use by this system, but flue gas directly contacts with mud, easily makes flue gas and mud crossed contamination.Publication number is the device that patent discloses flue gas contact drying mud of CN102285748A, but owing to utilizing thermal oil secondary heat exchange, will greatly reduce the efficiency of heat exchange.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of sludge dehydrating and drying device, solves the heat energy loss in sludge handling process and odor pollution problem, can also reduce the cost of sludge treatment.
For reaching the object of above-mentioned utility model, the utility model is achieved through the following technical solutions:
A kind of sludge dehydrating and drying device of the present utility model, comprise closed kiln, gas collector, roasting kiln and chimney, mummification platform is provided with in described kiln, mummification mesa base is provided with the thermal source chamber fitted, and thermal source is provided with gas passage in chamber, and described gas collector is tubular type aeration structure, its one end is communicated with kiln, the other end is communicated with roasting kiln again, and the pneumatic outlet of roasting kiln is communicated with the thermal source inlet in above-mentioned thermal source chamber, and the thermal source outlet in thermal source chamber is communicated with chimney.Gas circulation in mud drying process is utilized the thermal source flue gas as sludge drying, and mud and flue gas indirect heat exchange, effectively reduce the dual pollution of mud and flue gas, realizes effective utilization of resource, environmental protection.
Described kiln also includes the reciprocating feed stand receiving apparatus being arranged on reciprocally roll extrusion mud on mummification platform.
Further, the dehydrating unit be arranged between gas collector and roasting kiln is also included.
Further, sludge dehydrating and drying device also includes the cleaning apparatus between pneumatic outlet and the thermal source inlet in thermal source chamber being arranged at roasting kiln.
Further, sludge dehydrating and drying device also includes the desulfuring and denitrifying apparatus between thermal source outlet and chimney being arranged at thermal source chamber.
In drying process, be provided with the refining plants such as deodorization, dehumidification, and foul smell later for dehumidifying is directly led to boiler high temperature cracking, can farthest ensure not affect surrounding enviroment.
Sludge dehydrating and drying device of the present utility model, mud is after the mummification of this device, and its water ratio can be down to about 25% by 80%, has good mummification efficiency.Mud after mummification can mix with fire coal mixes burning, and the turning sludge into fuel realizing mud utilizes.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of sludge dehydrating and drying device of the present utility model.
Fig. 2 is sludge dehydrating and drying device use principle schematic diagram of the present utility model.
Reference numeral: kiln 1, mummification platform 2, reciprocating feed stand receiving apparatus 3, thermal source chamber 4, gas collector 5, dehydrating unit 6, roasting kiln 7, cleaning apparatus 8, desulfuring and denitrifying apparatus 9, chimney 10, dewatered sludge storage bin 11, mud airing canopy 12, thermal source inlet 41 and thermal source outlet 42.
Embodiment
Be clearly and completely described the technical scheme in the utility model embodiment below in conjunction with drawings and Examples, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.
Embodiment
Refer to Fig. 1, the embodiment of sludge dehydrating and drying device of the present utility model, should
Sludge dehydrating and drying device, comprise closed kiln 1, gas collector 5, roasting kiln 7 and chimney 10, in described kiln, 1 is provided with mummification platform 2, be provided with the thermal source chamber 4 wanting to fit bottom mummification platform 2, be provided with gas passage in thermal source chamber 4, described gas collector 5 is tubular type aeration structure, its one end is communicated with kiln, the other end is communicated with roasting kiln 7 again, and the pneumatic outlet of roasting kiln 7 is communicated with the thermal source inlet 41 in above-mentioned thermal source chamber 4, and the thermal source outlet 42 in thermal source chamber 4 is communicated with chimney 10.
Described gas collector 5 adopts multiple induced draft fan to be arranged at structure in pipeline.
Described roasting kiln 7 adopts coal firing high-temperature cracking furnace.
Described kiln 1 also includes the reciprocating feed stand receiving apparatus 3 being arranged on reciprocally roll extrusion mud on mummification platform 2.
Also be provided with dewatered sludge storage bin 11 and mud airing canopy 12 in kiln 1, the former treats dewatered sludge in order to supplementary mummification platform 2, and the latter is in order to spread out slabbing by mud.
Further, sludge dehydrating and drying device also includes the dehydrating unit 6 be arranged between gas collector 5 and roasting kiln 7, in order to increase the gas stream general character between dehydrating unit 6 and roasting kiln 7, between both, also has additional induced draft fan.
Further, sludge dehydrating and drying device also comprises the cleaning apparatus 8 between its pneumatic outlet being arranged at roasting kiln 7 and the thermal source inlet 41 in thermal source chamber 4.
Further, sludge dehydrating and drying device also includes the desulfuring and denitrifying apparatus 9 be arranged between the thermal source outlet 42 in thermal source chamber 4 and chimney 10.
Consult Fig. 2, sludge dehydrating and drying device use principle schematic diagram of the present utility model.The workflow of above-mentioned sludge dehydrating and drying device is as follows:
Step one: mechanism filter-pressing dehydration and airing are carried out to mud;
Step 2: be laid in by mud on the mummification platform 2 in kiln, utilizes the heat in the thermal source chamber 4 be arranged at bottom mummification platform 2 to carry out heating and drying process to mud;
Step 3: until sludge drying to water ratio lower than 25% after, by the mud of mummification storage with kiln in.
The gas produced by step one to step 3 is collected by gas collector 5, gas is passed in roasting kiln 7 and make gas Pintsch process, and make the flue gas of roasting kiln 7 through thermal source chamber 4, thermal source as dewatered sludge is re-used, and is discharged in air after finally carrying out purifying treatment to flue gas.
The water ratio of general mud is about 80%, and the water ratio after mud is carried out mechanism filter-pressing by step one in above-mentioned steps in mud can drop to about 50%; Again through later, water ratio can decline 5%-10% again.
Secondly, the described mud thickness be laid on mummification platform 2 is 5-10cm, and tiling, thickness is too high is unfavorable for sludge dewatering.Then by temperature be the thermal source of 120 DEG C ± 20 DEG C to sludge drying, the water ratio in mud can be reduced to 25%.
Due in the gas that step one to step 3 produces containing a large amount of moisture content, therefore described in the gas collected first will through dehumidification treatments before passing into roasting kiln 7.
Then, flue gas needs first to carry out dust removal process before roasting kiln 7 enters thermal source chamber 4.
Finally, the purifying treatment of described flue gas is desulphurization denitration process, generally needs the temperature of flue gas to drop to after below 90 DEG C and just can carry out desulphurization denitration process.
Often comprise complicated organic pollutant in the gas that the utility model produces at mud drying process, the effect of organic pollutant in Pintsch gas can be played with roasting kiln heating; Secondly, the waste gas collected also can be recycled as the thermal source of dewatered sludge while heat.Present method achieves effective waste resource recycle, decreases the generation of environmental pollution, and mud is efficiently processed.The dewatered sludge utilizing the process of this sludge dehydrating and drying device to obtain, is particularly useful for mixing with fire coal mixing burning, and turning sludge into fuel recycles.
Above-described embodiment only in order to the utility model is described and and technical scheme described by unrestricted the utility model; Therefore, although this specification sheets has been described in detail the utility model with reference to each above-mentioned embodiment, those of ordinary skill in the art should be appreciated that and still can modify to the utility model or equivalent replacement; And all do not depart from technical scheme and the improvement thereof of spirit and scope of the present utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. a sludge dehydrating and drying device, comprise closed kiln, gas collector, roasting kiln and chimney, it is characterized in that: in described kiln, be provided with mummification platform, mummification mesa base is provided with the thermal source chamber fitted, and thermal source is provided with gas passage in chamber, and described gas collector is tubular type aeration structure, its one end is communicated with kiln, the other end is communicated with roasting kiln again, and the pneumatic outlet of roasting kiln is communicated with the thermal source inlet in above-mentioned thermal source chamber, and the thermal source outlet in thermal source chamber is communicated with chimney.
2. sludge dehydrating and drying device according to claim 1, is characterized in that: described mummification platform is provided with the reciprocating feed stand receiving apparatus of reciprocally roll extrusion mud.
3. sludge dehydrating and drying device according to claim 1, is characterized in that: also include the dehydrating unit be arranged between gas collector and roasting kiln.
4. sludge dehydrating and drying device according to claim 1, is characterized in that: also include the cleaning apparatus between pneumatic outlet and the thermal source inlet in thermal source chamber being arranged at roasting kiln.
5. sludge dehydrating and drying device according to claim 1, is characterized in that: also include the desulfuring and denitrifying apparatus between thermal source outlet and chimney being arranged at thermal source chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420824374.0U CN204342637U (en) | 2014-12-19 | 2014-12-19 | A kind of sludge dehydrating and drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420824374.0U CN204342637U (en) | 2014-12-19 | 2014-12-19 | A kind of sludge dehydrating and drying device |
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| Publication Number | Publication Date |
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| CN204342637U true CN204342637U (en) | 2015-05-20 |
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| CN201420824374.0U Active CN204342637U (en) | 2014-12-19 | 2014-12-19 | A kind of sludge dehydrating and drying device |
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| CN (1) | CN204342637U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105330119A (en) * | 2015-10-30 | 2016-02-17 | 中国科学院广州能源研究所 | Method and system for drying sludge by means of solar energy and flue gas waste heat |
| CN111439910A (en) * | 2020-04-29 | 2020-07-24 | 无锡市凌德环保设备有限公司 | Internal circulation heating structure for sludge treatment dryer |
| WO2021128855A1 (en) * | 2019-12-23 | 2021-07-01 | 广东工业大学 | Energy conserving sludge drying system |
-
2014
- 2014-12-19 CN CN201420824374.0U patent/CN204342637U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105330119A (en) * | 2015-10-30 | 2016-02-17 | 中国科学院广州能源研究所 | Method and system for drying sludge by means of solar energy and flue gas waste heat |
| WO2021128855A1 (en) * | 2019-12-23 | 2021-07-01 | 广东工业大学 | Energy conserving sludge drying system |
| CN111439910A (en) * | 2020-04-29 | 2020-07-24 | 无锡市凌德环保设备有限公司 | Internal circulation heating structure for sludge treatment dryer |
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