CN212198988U - Novel sludge drying heat recovery device - Google Patents
Novel sludge drying heat recovery device Download PDFInfo
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- CN212198988U CN212198988U CN202020740646.4U CN202020740646U CN212198988U CN 212198988 U CN212198988 U CN 212198988U CN 202020740646 U CN202020740646 U CN 202020740646U CN 212198988 U CN212198988 U CN 212198988U
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- sludge
- heat
- deaerator
- drying
- incinerator
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
A novel sludge drying heat recovery device relates to the technical field of drying incineration disposal and environmental protection of municipal sludge. The device comprises a drying machine, a sludge incinerator, an air preheater and a waste heat boiler which are connected in sequence. The waste heat boiler forms closed circulation through the deaerator and the water supply pump. The structure is characterized in that a heat recoverer is arranged between the drier and the sludge incinerator, the heat recoverer is connected with a deaerator, and the lower part of the sludge incinerator is connected with a afterburning device for conveying supplementary fuel. Compared with the prior art, the utility model discloses utilize the sensible heat of condensate water in the mummification machine, promoted the thermal utilization ratio of steam on the one hand, on the other hand makes to burn burning furnace required supplementary fuel volume and diminishes, has promoted the thermal behavior of device.
Description
Technical Field
The utility model relates to a mummification of municipal administration mud is burned and is dealt with, environmental protection technical field, especially novel sludge drying's heat recovery device.
Background
The sludge drying and incineration disposal technology has been applied to many countries as a mature technology, and the disposal mode is an efficient, harmless and environment-friendly technology in a plurality of sludge disposal modes, and for sludge with higher heat value, steam generated in the disposal process can be used for driving a steam turbine to generate electricity, so that economic benefits are generated.
At present, the sludge treatment mode is still in the beginning stage in China, the actual engineering application is less, and meanwhile, the theoretical research on the aspect is not much by domestic scientific research institutions. For the mature sludge treatment process system at present, a lot of optimization spaces exist in the aspects of a plurality of thermal systems, mechanical conveying, sludge drying and the like.
In the prior art, in a conventional sludge drying and incinerating project, after high-temperature steam dries wet sludge, the wet sludge carries a large amount of heat, but the heat is not effectively utilized.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims at providing a novel heat recovery system for sludge drying. The sensible heat of the condensed water in the drier is utilized, so that the utilization rate of steam heat is improved, the quantity of supplemented fuel required by the incinerator is reduced, and the thermal performance of the device is improved.
In order to achieve the above object, the technical solution of the present invention is implemented as follows:
a novel sludge drying heat recovery device comprises a drier, a sludge incinerator, an air preheater and a waste heat boiler which are connected in sequence. The waste heat boiler forms closed circulation through the deaerator and the water supply pump. The structure is characterized in that a heat recoverer is arranged between the drier and the sludge incinerator, the heat recoverer is connected with a deaerator, and the lower part of the sludge incinerator is connected with a afterburning device for conveying supplementary fuel.
The utility model discloses owing to adopted above-mentioned structure, it has following advantage and beneficial effect to compare with prior art:
1. compare in conventional sludge drying system, the utility model discloses in the heat recovery device that sets up utilize the heat in the desiccator condensate, the thermal utilization ratio of steam is higher.
2. Compare in conventional sludge drying system of burning, adopt the utility model discloses the device is carried the mud dryness that gets into in the incinerator and is bigger, and required supplementary fuel then still less under the requirement that satisfies the operation of burning furnace, and the economic performance of whole device obtains promoting.
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
Referring to fig. 1, the heat recovery device for sludge drying of the present invention comprises a drying machine, a heat recovery device, a sludge incinerator, an air preheater and a waste heat boiler which are connected in sequence. The waste heat boiler forms closed circulation through the deaerator and the water supply pump, the heat recovery device is connected with the deaerator, and the lower portion of the sludge incinerator is connected with a afterburning device for conveying supplementary fuel.
The utility model discloses heat recovery device's operation process does:
the wet sludge 1 enters a drier through a conveying system, and saturated steam generated by a waste heat boiler in the drier transfers heat to the wet sludge. After the wet sludge 1 is heated, the moisture in the wet sludge is evaporated to form dry sludge 2, and the dry sludge 2 is sent into the sludge incinerator through the heat recoverer. In the sludge incinerator, the dry sludge 2 is burnt and burnt out in the sludge incinerator under the combined action of the high-temperature fluidizing air 7 and the supplementary fuel 13 natural gas for auxiliary combustion.
High-temperature flue gas 3 generated by combustion stays in a sludge incinerator hearth at the temperature of not less than 850 ℃ for 2 seconds and then enters an air preheater to heat fluidizing air 6, the heated high-temperature fluidizing air 7 is sent into the sludge incinerator through an air distribution pipe, and a heat carrier (quartz sand) turbulently moves in the sludge incinerator under the action of the high-temperature fluidizing air 7 and supplementary fuel 13. The hot flue gas 4 after the heat exchange in the air preheater is finished enters a waste heat boiler, and the flue gas in the waste heat boiler exchanges heat with feed water to generate saturated steam. A part of the saturated steam I9 enters a drier to dry wet sludge; and the other part of the saturated steam II 12 enters a deaerator for the deaerator to run, and the condensed water 8 deaerated by the deaerator is sent into the waste heat boiler through a water feeding pump. And the flue gas 5 at the outlet of the waste heat boiler enters a tail gas treatment system for treatment.
Claims (1)
1. A novel sludge drying heat recovery device comprises a drier, a sludge incinerator, an air preheater and a waste heat boiler which are connected in sequence, and further comprises a water feeding pump and a deaerator, wherein the waste heat boiler forms closed circulation through the deaerator and the water feeding pump; the device is characterized in that a heat recoverer is arranged between the drier and the sludge incinerator, the heat recoverer is connected with a deaerator, and the lower part of the sludge incinerator is connected with a afterburning device for conveying supplementary fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020740646.4U CN212198988U (en) | 2020-05-08 | 2020-05-08 | Novel sludge drying heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020740646.4U CN212198988U (en) | 2020-05-08 | 2020-05-08 | Novel sludge drying heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212198988U true CN212198988U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202020740646.4U Active CN212198988U (en) | 2020-05-08 | 2020-05-08 | Novel sludge drying heat recovery device |
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| CN (1) | CN212198988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620561A (en) * | 2020-05-08 | 2021-11-09 | 同方环境股份有限公司 | Novel sludge drying heat recovery system |
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2020
- 2020-05-08 CN CN202020740646.4U patent/CN212198988U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620561A (en) * | 2020-05-08 | 2021-11-09 | 同方环境股份有限公司 | Novel sludge drying heat recovery system |
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