CN109399890B - Device and method for preventing mixed waste gas of sludge drying device from condensing - Google Patents
Device and method for preventing mixed waste gas of sludge drying device from condensing Download PDFInfo
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- CN109399890B CN109399890B CN201811598313.6A CN201811598313A CN109399890B CN 109399890 B CN109399890 B CN 109399890B CN 201811598313 A CN201811598313 A CN 201811598313A CN 109399890 B CN109399890 B CN 109399890B
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- heat exchange
- sludge
- exchange tube
- steam
- waste gas
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- 239000010802 sludge Substances 0.000 title claims abstract description 66
- 238000001035 drying Methods 0.000 title claims abstract description 46
- 239000007789 gas Substances 0.000 title claims abstract description 28
- 239000010812 mixed waste Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 17
- 239000002912 waste gas Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000012774 insulation material Substances 0.000 claims abstract description 13
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 239000010865 sewage Substances 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005183 environmental health Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a device for preventing mixed waste gas of a sludge drying device from condensing, which comprises a sludge bin, a sludge conveyor, a sludge hopper, a sludge drying device, a connecting pipe, a heat insulation material roll, a waste gas heat exchange pipe, a boiler, an air extraction fan, a steam turbine, a condensed water circulating pump and a steam heat exchange pipe. The novel condensation-proof design formed by the waste gas heat exchange tube, the steam heat exchange tube and the heat insulation material coil is skillfully combined, so that equipment investment and recovery treatment cost are reduced, emission of drying waste gas and condensed water sewage is completely eliminated, and the whole-flow energy-saving environment-friendly effect is realized; the waste gas is conveyed to a boiler as auxiliary energy to support combustion, and then is conveyed to a subsequent program together with the waste gas generated by the combustion of the boiler to be treated and discharged, so that the energy is recycled; and the high-temperature steam required by the sludge drying device is provided by a boiler, condensed water generated in the sludge drying device is circulated to the steam turbine for drainage, so that the cyclic utilization of high-pressure steam is realized, and the resources are saved.
Description
Technical Field
The invention relates to the technical field of energy recycling, in particular to a device and a method for preventing mixed waste gas of a sludge drying device from condensing.
Background
In the process of storing the sludge bin and drying the sludge, toxic and harmful waste gases are generated, and most of the gases are methane, carbon dioxide, hydrogen, carbon monoxide and the like, and the waste gases are favorable for combustion, but cause certain harm and influence on transportation and inspection personnel and environmental health.
The waste gas generated in the drying process is treated by a special process in the sludge drying and blending burning engineering, the waste gas generated in the sludge drying device process is pumped to a secondary air box of the boiler by adding a special recovery fan, and is sent to the boiler together with the secondary air, and the waste gas is subjected to full-flow treatment such as combustion in a hearth, denitration and desulfurization, and the like, so that the sludge drying device is kept at a certain negative pressure, and dust and odor leakage is avoided. However, the drying device is far away from the boiler, and the waste gas can be condensed in the conveying pipeline, so that the equipment and the pipeline can be corroded and the like.
Therefore, it is necessary to provide a device and a method for preventing the condensation of mixed waste gas of a sludge drying device.
Disclosure of Invention
The invention aims to provide a device and a method for preventing mixed waste gas of a sludge drying device from condensing, so as to solve the problems in the background technology.
In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a device for preventing mixed waste gas condensation of sludge drying device, includes sludge bin, mud conveyer, mud hopper, sludge drying device, connecting pipe, heat preservation material book, waste gas heat exchange tube, boiler, air exhaust fan, steam turbine, condensate water circulating pump and steam heat exchange tube, the export of sludge bin with the access connection of mud conveyer, the export of mud conveyer with the access connection of mud hopper, the export of mud hopper with the access connection of sludge drying device, waste gas heat exchange tube with the parallel next to setting of steam heat exchange tube is in the heat preservation material, on the upper end lateral wall of sludge drying device through the connecting pipe with the one end of waste gas heat exchange tube is connected, the other end of waste gas heat exchange tube through the connecting pipe with the access connection of air exhaust fan, the air exhaust fan's export through the connecting pipe with the air intake connection of boiler, the steam outlet of steam turbine through the connecting pipe with the one end of steam heat exchange tube is connected, the other end of steam heat exchange tube through the connecting pipe with the steam inlet connection of sludge drying device, on the diapire device through the connecting pipe with the condensate water circulating pump is connected with the water inlet of condensate water pump.
Preferably, the heat insulation material roll is a columnar roll wound by glass cotton roll felt, and the waste gas heat exchange tube and the steam heat exchange tube are arranged in parallel and close to each other and then pass through the axis of the columnar roll along the length direction.
Preferably, the sludge drying device comprises an inner layer chamber for storing sludge and an outer layer chamber for containing steam for heating the inner layer chamber, an outlet of the sludge hopper is communicated with the inner layer chamber, an outlet of the steam heat exchange tube is connected with an inlet of the outer layer chamber through a connecting tube, and an outlet of the outer layer chamber is connected with an inlet of the condensate circulating pump
The method for preventing the mixed waste gas of the sludge drying device from condensing comprises the following specific steps of:
step one: arranging a steam heat exchange tube for conveying high-temperature steam and an exhaust gas heat exchange tube for conveying mixed exhaust gas side by side, parallel to each other and abutted against each other;
step two: the waste gas heat exchange tube and the steam heat exchange tube are used as a whole to be additionally provided with the heat insulation material coil, so that the heat of high-temperature steam is radiated to the mixed waste gas to the greatest extent, the condition of waste gas condensation generated by the sludge drying device is effectively prevented, and the purpose of high-efficiency and full utilization of the boiler is realized.
Compared with the prior art, the invention has the beneficial effects that: the device and the method for preventing the mixed waste gas of the sludge drying device from condensing are skillfully combined with the condensation preventing design formed by the waste gas heat exchange tube, the steam heat exchange tube and the heat insulation material roll, so that the equipment investment and the recycling cost are reduced, the emission of the drying waste gas and condensed water sewage is completely eliminated, and the whole process is energy-saving and environment-friendly; the waste gas is conveyed to a boiler as auxiliary energy to support combustion, and then is conveyed to a subsequent program together with the waste gas generated by the combustion of the boiler to be treated and discharged, so that the energy is recycled; and the high-temperature steam required by the sludge drying device is provided by a boiler, condensed water generated in the sludge drying device is circulated to a steam turbine, so that the cyclic utilization of the high-pressure steam is realized, and the resources are saved.
Drawings
FIG. 1 is a schematic diagram of the component connections of the invention;
FIG. 2 is a schematic diagram showing a combined structure of an inventive exhaust heat exchange tube, a steam heat exchange tube and a heat insulation material roll.
In the figure: 1-a sludge bin; 2-a sludge conveyor; 3-a sludge hopper; 4-a sludge drying device; 41-an inner layer chamber; 42-an outer layer chamber; 5-connecting pipes; 6-heat preservation material rolls; 7-an exhaust gas heat exchange tube; 8-a boiler; 9, an air extraction fan; 10-a steam turbine; 11-a condensate water circulation pump; 12-steam heat exchange tube.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, the invention provides a technical scheme: the utility model provides a device for preventing sludge drying device mixed waste gas condensation, includes sludge storehouse 1, mud conveyer 2, mud hopper 3, sludge drying device 4, connecting pipe 5, heat preservation material book 6, waste gas heat exchange tube 7, boiler 8, air exhaust fan 9, steam turbine 10, condensate water circulating pump 11 and steam heat exchange tube 12, the export of mud storehouse 1 with the inlet connection of mud conveyer 2, the export of mud conveyer 2 with the inlet connection of mud hopper 3, the export of mud hopper 3 with the inlet connection of sludge drying device 4, waste gas heat exchange tube 7 with steam heat exchange tube 12 parallel is in close to setting up in the heat preservation material 6, on the upper end lateral wall of sludge drying device 4 through connecting pipe 5 with the one end of waste gas heat exchange tube 7 is connected, the other end of waste gas heat exchange tube 7 through connecting pipe 5 with the inlet connection of air exhaust fan 9, the export of air exhaust fan 9 through 5 with the air intake connection of boiler 8, the steam outlet of steam turbine 10 through connecting pipe 5 with the one end of steam heat exchange tube 12, the steam outlet of steam turbine 10 through connecting pipe 5 with the steam turbine 4 through the water circulating pump's of the water inlet connection of steam heat exchange tube 11 through the connecting pipe 5 with the water circulating pump 11.
The heat insulation material roll 6 is a columnar roll wound by glass cotton roll felt, and the waste gas heat exchange tube 7 and the steam heat exchange tube 12 are arranged in parallel and closely together and then pass through the axis of the columnar roll along the length direction.
The sludge drying device 4 comprises an inner layer chamber 41 for storing sludge and an outer layer chamber 42 for containing steam and heating the inner layer chamber 41, the outlet of the sludge hopper 3 is communicated with the inner layer chamber 41, the outlet of the steam heat exchange tube 12 is connected with the inlet of the outer layer chamber 42 through a connecting tube 5, and the outlet of the outer layer chamber 42 is connected with the inlet of the condensate water circulating pump 11
The method for preventing the mixed waste gas of the sludge drying device from condensing comprises the following specific steps of:
step one: arranging a steam heat exchange tube 12 for conveying high-temperature steam and an exhaust gas heat exchange tube 7 for conveying mixed exhaust gas side by side together in parallel and in close proximity to each other;
step two: the waste gas heat exchange tube 7 and the steam heat exchange tube 12 are used as a whole to be additionally provided with the heat insulation material coil 6, so that the heat of high-temperature steam is radiated to the mixed waste gas to the greatest extent, the condition of condensation of the waste gas generated by the sludge drying device 4 is effectively prevented, and the purpose of high-efficiency full utilization of the boiler 8 is realized.
The invention has the beneficial effects that: the device and the method for preventing the mixed waste gas of the sludge drying device from condensing are skillfully combined with the condensation preventing design formed by the waste gas heat exchange tube 7, the steam heat exchange tube 12 and the heat insulation material coil 6, so that the equipment investment and the recycling cost are reduced, the emission of the dried waste gas and condensed water sewage is completely eliminated, and the whole process is energy-saving and environment-friendly; the waste gas is conveyed to the boiler 8 as auxiliary energy to support combustion, and then is conveyed to a subsequent procedure together with the waste gas generated by the combustion of the boiler 8 for treatment and emission, so that the energy recycling is realized; and the high-temperature steam required by the sludge drying device 4 is provided by the boiler 8, and condensed water generated in the sludge drying device 4 is circulated to the steam turbine 10 for drainage, so that the recycling of the high-pressure steam is realized, and the resources are saved.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (1)
1. A method for preventing the condensation of mixed waste gas of a sludge drying device is characterized by comprising the following steps: the device comprises a sludge bin (1), a sludge conveyor (2), a sludge hopper (3), a sludge drying device (4), a connecting pipe (5), a heat insulation material roll (6), an exhaust gas heat exchange tube (7), a boiler (8), an air suction fan (9), a steam turbine (10), a condensate water circulating pump (11) and a steam heat exchange tube (12), wherein the outlet of the sludge bin (1) is connected with the inlet of the sludge conveyor (2), the outlet of the sludge conveyor (2) is connected with the inlet of the sludge hopper (3), the outlet of the sludge hopper (3) is connected with the inlet of the sludge drying device (4), the exhaust gas heat exchange tube (7) and the steam heat exchange tube (12) are arranged in parallel and closely in the heat insulation material roll (6), the upper end side wall of the connecting pipe (4) is connected with one end of the exhaust gas heat exchange tube (7) through the connecting pipe (5), the other end of the exhaust gas heat exchange tube (7) is connected with the inlet of the air suction fan (9) through the connecting pipe (5), the outlet of the boiler (9) is connected with one end of the steam heat exchange tube (8) through the connecting pipe (10), the other end of the steam heat exchange tube (12) is connected with a steam inlet of the sludge drying device (4) through a connecting tube (5), the bottom wall of the sludge drying device (4) is connected with an inlet of a condensate water circulating pump (11) through the connecting tube (5), an outlet of the condensate water circulating pump (11) is connected with the steam turbine (10) through the connecting tube (5), the heat insulation material roll (6) is a cylindrical roll wound by glass cotton felt, the waste gas heat exchange tube (7) and the steam heat exchange tube (12) are arranged in parallel and closely along the length direction and then pass through the axis of the cylindrical roll, the sludge drying device (4) comprises an inner layer chamber (41) for storing sludge and an outer layer chamber (42) for containing steam and heating the inner layer chamber (41), an outlet of the sludge feed hopper (3) is communicated with the inner layer chamber (41), an outlet of the steam heat exchange tube (12) is connected with the inlet of the outer layer chamber (42) through the connecting tube (5), and an outlet of the outer layer chamber (42) is connected with the condensate water circulating pump (11);
the method comprises the following specific steps:
step one: arranging a steam heat exchange tube (12) for conveying high-temperature steam and an exhaust gas heat exchange tube (7) for conveying mixed exhaust gas side by side together in parallel and in close proximity to each other;
step two: the waste gas heat exchange tube (7) and the steam heat exchange tube (12) are used as a whole to be additionally provided with the heat insulation material coil (6), so that the heat of high-temperature steam is radiated to the mixed waste gas to the greatest extent, the condition of waste gas condensation generated by the sludge drying device (4) is effectively prevented, and the purpose of high-efficiency full utilization of the boiler (8) is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598313.6A CN109399890B (en) | 2018-12-26 | 2018-12-26 | Device and method for preventing mixed waste gas of sludge drying device from condensing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598313.6A CN109399890B (en) | 2018-12-26 | 2018-12-26 | Device and method for preventing mixed waste gas of sludge drying device from condensing |
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| Publication Number | Publication Date |
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| CN109399890A CN109399890A (en) | 2019-03-01 |
| CN109399890B true CN109399890B (en) | 2024-03-15 |
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| CN201811598313.6A Active CN109399890B (en) | 2018-12-26 | 2018-12-26 | Device and method for preventing mixed waste gas of sludge drying device from condensing |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207089B (en) * | 2019-06-26 | 2024-06-04 | 西安热工研究院有限公司 | Sludge coupling power generation system of coal-fired power plant unit and working method thereof |
| CN110482817B (en) * | 2019-09-05 | 2023-05-05 | 安阳海森科技有限公司 | Silt exhaust treatment device |
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|---|---|---|---|---|
| CA2158574A1 (en) * | 1994-01-18 | 1995-07-20 | Bart T. Lynam | Sludge treatment system |
| KR20090059276A (en) * | 2007-12-06 | 2009-06-11 | 주식회사 포스코건설 | Apparatus for treating exhaust gas of sludge dryer |
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| CN105258134A (en) * | 2015-10-20 | 2016-01-20 | 上海理工大学 | Coal-sludge composite firing system based on dual-medium flue gas drying and circulating fluidized bed boiler |
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2018
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Patent Citations (12)
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| KR20090059276A (en) * | 2007-12-06 | 2009-06-11 | 주식회사 포스코건설 | Apparatus for treating exhaust gas of sludge dryer |
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| CN109399890A (en) | 2019-03-01 |
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