CN112010528A - Waste incineration boiler coupling sludge drying disposal system - Google Patents
Waste incineration boiler coupling sludge drying disposal system Download PDFInfo
- Publication number
- CN112010528A CN112010528A CN202010957232.1A CN202010957232A CN112010528A CN 112010528 A CN112010528 A CN 112010528A CN 202010957232 A CN202010957232 A CN 202010957232A CN 112010528 A CN112010528 A CN 112010528A
- Authority
- CN
- China
- Prior art keywords
- sludge
- flue gas
- drying
- waste incineration
- drying machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 94
- 238000001035 drying Methods 0.000 title claims abstract description 61
- 238000004056 waste incineration Methods 0.000 title claims abstract description 30
- 230000008878 coupling Effects 0.000 title claims description 4
- 238000010168 coupling process Methods 0.000 title claims description 4
- 238000005859 coupling reaction Methods 0.000 title claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 33
- 238000000746 purification Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000779 smoke Substances 0.000 claims description 2
- 239000002918 waste heat Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009264 composting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- 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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/10—Drying by heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/12—Sludge, slurries or mixtures of liquids
Abstract
The invention belongs to the technical field of municipal waste incineration and sludge treatment, and particularly relates to a waste incineration boiler coupled sludge drying treatment system which comprises a waste incineration boiler, a wet sludge bin, a sludge drying system, a dry sludge conveying system and a flue gas purification system; according to the treatment, the air exhaust port is arranged between the secondary evaporator of the waste heat boiler and the economizer, the medium-temperature flue gas is extracted to serve as a heat source of the sludge drying machine, the drying treatment of the sludge is realized by utilizing the high-grade heat energy in the medium-temperature flue gas, the energy utilization efficiency of the system is improved, the operation cost of the sludge drying system is reduced, and therefore the overall operation economy of the waste incineration generator set is improved.
Description
Technical Field
The invention relates to the technical field of municipal waste incineration and sludge treatment, in particular to a waste incineration boiler coupled sludge drying treatment system.
Background
The sludge is used as a secondary pollutant generated by sewage treatment, is rich in microorganisms, refractory organic matters, salts, heavy metals and other harmful substances, and can seriously threaten human living environment if not subjected to harmless treatment. Because the water content of the sludge is higher and the volume is huge, the traditional sludge disposal modes such as landfill, composting and the like can not meet the domestic land requirement. The water content is reduced to 30-50% by utilizing the processes of mechanical dehydration and deep dehydration and heat drying, so that the reduction is realized. The incineration process is utilized, the reduction and the harmlessness are realized completely, and the mode of outward transportation of ash slag is adopted, so that the method becomes one of the main technical routes for treating the sludge.
The independent sludge drying and incineration needs to be matched with a plurality of systems for incineration, tail gas treatment and the like, so that the construction and operation cost of the project is higher, and the economic benefit is poor. The sludge is mixed in the garbage incineration, the existing incineration power generation equipment and a complete flue gas purification device can be fully utilized, only a sludge drying system needs to be added, in addition, the household garbage incineration plant also has various heat sources such as steam, flue gas and the like, and the sludge is dried by utilizing the heat sources, so that the investment cost and the operating cost of the sludge incineration treatment can be effectively reduced.
In the traditional sludge drying technology, low-grade steam heat energy is mostly adopted as a sludge drying heat source, and the steam is introduced to the inlet of the sludge drying machine from the generator set and also needs to adopt a pressure reduction cooling technology, so that the waste of heat source energy is caused, and the running cost of a sludge drying system is higher. The invention provides a waste incineration boiler coupled sludge drying disposal system, wherein an air exhaust port is arranged between a secondary evaporator and an economizer of a waste incineration boiler, medium-temperature flue gas is extracted to serve as a heat source of a sludge drying machine, and high-grade heat energy in the medium-temperature flue gas is utilized to realize drying disposal of sludge, so that the energy utilization efficiency of the system is improved, the operation cost of the sludge drying system is reduced, and the integral operation economy of a waste incineration generator set is improved.
Disclosure of Invention
The invention provides a waste incineration boiler coupled sludge drying disposal system, which optimizes a sludge drying process by utilizing the conventional waste incineration power generation system, comprehensively considers the safety, the economy, the energy conservation and the environmental protection of sludge disposal, and realizes the reduction and harmless disposal of sludge.
The invention adopts the following specific technical scheme: a waste incineration boiler coupling sludge drying disposal system structurally comprises a waste incineration boiler, a wet sludge bin, a sludge drying system, a dry sludge conveying system and a flue gas purification system;
the sludge drying system comprises a sludge drying machine, a drying machine flue gas inlet pipeline and a drying machine tail gas outlet pipeline;
the drying machine is connected with the wet sludge bin and the dry sludge conveying system;
the drying machine flue gas inlet pipeline is connected with the drying machine and the waste incineration boiler, and a fan and an electric regulating valve are arranged on the pipeline and used for regulating the flue gas amount required by sludge drying;
and the tail gas outlet pipeline of the drying machine is connected with a flue gas purification system.
The dry sludge conveying system comprises a spiral conveyor, a dry sludge bin and a scraper conveyor which are sequentially connected, and an outlet of the scraper conveyor is connected to the waste incineration boiler;
the treatment system adopts medium-temperature flue gas to dry sludge, the air exhaust port is arranged between the secondary evaporator and the economizer of the waste incineration boiler, and the extracted medium-temperature flue gas completely enters the sludge drier through the fan to be used as a heat source for drying the sludge. And (3) conveying the wet sludge temporarily stored in the wet sludge bin to a sludge drying machine, absorbing smoke heat in the sludge drying machine for drying, temporarily storing the dried sludge in a dry sludge bin through a screw conveyor, mixing the sludge with garbage through a scraper conveyor, and conveying the mixture to a feed inlet of a garbage incineration boiler for incineration and utilization. The dried flue gas is mixed with vapor evaporated from the sludge, and the mixture is sent to a flue gas purification system through a tail gas outlet of the drier to be treated and discharged after reaching the standard.
The invention effectively utilizes high-grade heat energy in the medium-temperature flue gas to dry the sludge, improves the energy utilization efficiency of the system, and reduces the operation cost of the sludge drying system, thereby improving the overall operation economy of the waste incineration generator set.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of a waste incineration boiler coupled sludge drying disposal system.
In the figure 1, 1 is a waste incineration boiler, 2 is a wet sludge bin, 3 is a flue gas purification system, 4 is a sludge drier, 5 is a drier flue gas inlet pipeline, 6 is a fan, 7 is an electric regulating valve, 8 is a drier tail gas outlet pipeline, 9 is a screw conveyer, 10 is a dry sludge bin, and 11 is a scraper conveyer.
Detailed Description
In fig. 1, a waste incineration boiler is coupled with a sludge drying disposal system, which comprises a waste incineration boiler 1, a wet sludge bin 2, a sludge drying system, a dry sludge conveying system and a flue gas purification system 3; the sludge drying system comprises a sludge drying machine 4, a drying machine flue gas inlet pipeline 5 and a drying machine tail gas outlet pipeline 8; the drier 4 is connected with the wet sludge bin 2 and the dry sludge conveying system; a drier flue gas inlet pipeline 5 is connected with a drier 4 and a waste incineration boiler 1, and a fan 6 and an electric regulating valve 7 are arranged on the pipeline and used for regulating the flue gas amount required by sludge drying; the drying machine tail gas outlet pipeline 8 is connected with the flue gas purification system 3. The dry sludge conveying system comprises a screw conveyor 9, a dry sludge bin 10 and a scraper conveyor 11 which are sequentially connected, wherein an outlet of the scraper conveyor 11 is connected to a feeding port of the waste incineration boiler 1, and finally mixed with waste for incineration.
Claims (1)
1. A waste incineration boiler coupling sludge drying disposal system is characterized by comprising a waste incineration boiler, a wet sludge bin, a sludge drying system, a dry sludge conveying system and a flue gas purification system;
the sludge drying system comprises a sludge drying machine, a drying machine flue gas inlet pipeline and a drying machine tail gas outlet pipeline;
the drying machine is connected with the wet sludge bin and the dry sludge conveying system;
the drying machine flue gas inlet pipeline is connected with the drying machine and the waste incineration boiler, and a fan and an electric regulating valve are arranged on the pipeline and used for regulating the flue gas amount required by sludge drying;
and the tail gas outlet pipeline of the drying machine is connected with a flue gas purification system.
The dry sludge conveying system comprises a spiral conveyor, a dry sludge bin and a scraper conveyor which are sequentially connected, and an outlet of the scraper conveyor is connected to the waste incineration boiler;
the disposal system dries sludge by adopting medium-temperature flue gas, the air exhaust port is arranged between the secondary evaporator and the economizer of the waste incineration boiler, and the extracted medium-temperature flue gas completely enters the sludge drier through the fan to be used as a heat source for drying the sludge; and (3) conveying the wet sludge temporarily stored in the wet sludge bin to a sludge drying machine, absorbing smoke heat in the sludge drying machine for drying, temporarily storing the dried sludge in a dry sludge bin through a screw conveyor, mixing the sludge with garbage through a scraper conveyor, and conveying the mixture to a feed inlet of a garbage incineration boiler for incineration and utilization. The dried flue gas is mixed with vapor evaporated from the sludge, and the mixture is sent to a flue gas purification system through a tail gas outlet of the drier to be treated and discharged after reaching the standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010957232.1A CN112010528A (en) | 2020-09-13 | 2020-09-13 | Waste incineration boiler coupling sludge drying disposal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010957232.1A CN112010528A (en) | 2020-09-13 | 2020-09-13 | Waste incineration boiler coupling sludge drying disposal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112010528A true CN112010528A (en) | 2020-12-01 |
Family
ID=73522460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010957232.1A Pending CN112010528A (en) | 2020-09-13 | 2020-09-13 | Waste incineration boiler coupling sludge drying disposal system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112010528A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112520974A (en) * | 2020-12-19 | 2021-03-19 | 上海康恒环境股份有限公司 | Coupling sludge low-temperature drying disposal system for waste incineration plant |
| CN112815338A (en) * | 2021-01-12 | 2021-05-18 | 光大环境科技（中国）有限公司 | Sludge drying and waste incineration cooperative disposal device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040112796A1 (en) * | 2000-06-09 | 2004-06-17 | Giselher Stummer | Method and installation for drying sludge |
| CN102607040A (en) * | 2012-03-23 | 2012-07-25 | 上海康恒环境工程有限公司 | Method for incinerating domestic garbage and municipal sludge together |
| CN110220204A (en) * | 2019-05-17 | 2019-09-10 | 武汉深能环保新沟垃圾发电有限公司 | A kind of system and method for waste incineration cooperatively processing sludge |
| CN110285430A (en) * | 2019-06-26 | 2019-09-27 | 世纪华扬环境工程有限公司 | A kind of small-scale municipal sludge and house refuse cooperate with incineration treatment method |
| CN110748899A (en) * | 2019-11-27 | 2020-02-04 | 中国华能集团清洁能源技术研究院有限公司 | Coal-fired coupled sludge drying incineration system and method considering waste heat utilization |
| CN111288463A (en) * | 2020-03-11 | 2020-06-16 | 东南大学 | Sludge drying and incinerating system and drying and incinerating method |
-
2020
- 2020-09-13 CN CN202010957232.1A patent/CN112010528A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040112796A1 (en) * | 2000-06-09 | 2004-06-17 | Giselher Stummer | Method and installation for drying sludge |
| CN102607040A (en) * | 2012-03-23 | 2012-07-25 | 上海康恒环境工程有限公司 | Method for incinerating domestic garbage and municipal sludge together |
| CN110220204A (en) * | 2019-05-17 | 2019-09-10 | 武汉深能环保新沟垃圾发电有限公司 | A kind of system and method for waste incineration cooperatively processing sludge |
| CN110285430A (en) * | 2019-06-26 | 2019-09-27 | 世纪华扬环境工程有限公司 | A kind of small-scale municipal sludge and house refuse cooperate with incineration treatment method |
| CN110748899A (en) * | 2019-11-27 | 2020-02-04 | 中国华能集团清洁能源技术研究院有限公司 | Coal-fired coupled sludge drying incineration system and method considering waste heat utilization |
| CN111288463A (en) * | 2020-03-11 | 2020-06-16 | 东南大学 | Sludge drying and incinerating system and drying and incinerating method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112520974A (en) * | 2020-12-19 | 2021-03-19 | 上海康恒环境股份有限公司 | Coupling sludge low-temperature drying disposal system for waste incineration plant |
| CN112520974B (en) * | 2020-12-19 | 2023-08-22 | 上海康恒环境股份有限公司 | Coupling sludge low-temperature drying treatment system for garbage incineration plant |
| CN112815338A (en) * | 2021-01-12 | 2021-05-18 | 光大环境科技（中国）有限公司 | Sludge drying and waste incineration cooperative disposal device and method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201201 |