CN114413269A - System and method for increasing sludge and garbage disposal amount of garbage power plant - Google Patents
System and method for increasing sludge and garbage disposal amount of garbage power plant Download PDFInfo
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- CN114413269A CN114413269A CN202210080944.9A CN202210080944A CN114413269A CN 114413269 A CN114413269 A CN 114413269A CN 202210080944 A CN202210080944 A CN 202210080944A CN 114413269 A CN114413269 A CN 114413269A
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- 239000010802 sludge Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 79
- 239000000779 smoke Substances 0.000 claims abstract description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 22
- 239000003546 flue gas Substances 0.000 claims description 22
- 239000002699 waste material Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Images
Classifications
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- 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a system and a method for improving sludge and garbage disposal amount of a garbage power plant, wherein an outlet of a high-temperature smoke taking port is connected with a smoke inlet of a heat exchanger, a smoke outlet of the heat exchanger is connected with an inlet of a booster fan, and an outlet of the booster fan is connected with an inlet of a smoke return interface; the outlet of the secondary fan is divided into two paths, wherein one path is connected with the inlet of the low-temperature heating section of the heat exchanger through a first valve, and the other path is connected with a secondary air nozzle through a second valve; an outlet of a low-temperature heating section of the heat exchanger is connected with an inlet of a high-temperature heating section of the heat exchanger, and an outlet of the high-temperature heating section of the heat exchanger is connected with a secondary air nozzle; the outlet of the primary air fan is connected with the primary air inlet of the hearth through the original primary air heating system and the newly-added primary air heater.
Description
Technical Field
The invention belongs to the field of garbage power generation, and relates to a system and a method for increasing sludge and garbage disposal amount of a garbage power plant.
Background
With the acceleration of the urbanization process in China, the yield of multi-source wastes is rapidly increased, the disposal capacity of the existing environment-friendly facilities is insufficient, and the environmental awareness of the China is gradually improved, so that the realization of the recycling and harmless disposal of the multi-source wastes becomes a difficult problem of various local governments. The waste power plant is a unit for burning waste intensively, in order to improve the function of the waste power plant, the waste power plant is used for carrying out cooperative treatment on waste such as sludge and the like in many areas, and the practice shows that when the mixed combustion amount of the sludge reaches about 10%, the temperature of a hearth reaches the lower limit of 850 ℃, the mixed combustion amount of the sludge is limited, and how to effectively improve the mixed combustion amount is of great importance for improving the treatment capacity of large-scale equipment on the waste.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a system and a method for improving the sludge and garbage disposal amount of a garbage power plant, and the system and the method can improve the sludge or garbage disposal amount of the garbage power plant.
In order to achieve the aim, the system for improving the sludge and garbage disposal amount of the garbage power plant comprises a high-temperature smoke taking port, a heat exchanger, a booster fan, a smoke return port, a secondary fan, a secondary air nozzle, a primary fan, an original primary air heating system and a newly-added primary air heater;
the outlet of the high-temperature smoke taking port is connected with the smoke inlet of the heat exchanger, the smoke outlet of the heat exchanger is connected with the inlet of the booster fan, and the outlet of the booster fan is connected with the inlet of the smoke return interface; the outlet of the secondary fan is divided into two paths, wherein one path is connected with the inlet of the low-temperature heating section of the heat exchanger through a first valve, and the other path is connected with a secondary air nozzle through a second valve; an outlet of a low-temperature heating section of the heat exchanger is connected with an inlet of a high-temperature heating section of the heat exchanger, and an outlet of the high-temperature heating section of the heat exchanger is connected with a secondary air nozzle; the outlet of the primary air fan is connected with the primary air inlet of the hearth through the original primary air heating system and the newly added primary air heater.
Also comprises a heating device; the outlet of the low-temperature heating section of the heat exchanger is connected with the air inlet of the heating device, and the air outlet of the heating device is connected with the inlet of the high-temperature heating section of the heat exchanger.
The outlet of the secondary fan is connected with the inlet of the low-temperature heating section of the heat exchanger through a first valve.
The outlet of the secondary air fan is connected with the secondary air nozzle through a second valve.
The method for improving the sludge and garbage disposal quantity of the garbage power plant comprises a sludge and garbage pre-drying mode, a direct secondary air temperature improving mode and a direct primary air temperature improving mode.
In a sludge and garbage pre-drying mode, high-temperature flue gas is extracted by using a high-temperature smoke extraction port and is sent into a heat exchanger, air output by a secondary fan is divided into two paths, wherein one path of air enters a low-temperature heating section of the heat exchanger and is heated by using the high-temperature flue gas, then the heated flue gas enters a heating device, the other path of air enters a hearth through a secondary air nozzle, the heated air dries sludge or garbage in the heating device, a gaseous product discharged from the heating device enters a high-temperature heating section of the heat exchanger, and the dried sludge or garbage is sent into a primary grate after being discharged from a solid outlet of the heating device for incineration disposal; gas output by a high-temperature heating section of the heat exchanger enters a secondary air nozzle so as to improve the temperature of secondary air in the secondary air nozzle, and finally enters a hearth along with the secondary air for combustion; the flue gas output by the heat exchanger enters a boiler flue through a booster fan and a smoke return interface.
Under the mode of directly improving the temperature of secondary air, high-temperature smoke is extracted by using a high-temperature smoke extraction port and is sent into a heat exchanger, air output by a secondary fan is divided into two paths, wherein one path enters a low-temperature heating section of the heat exchanger and is heated by using the high-temperature smoke, then the heated smoke enters a heating device, and the other path enters a hearth through a secondary air nozzle; hot air output by the low-temperature heating section of the heat exchanger enters the high-temperature heating section of the heat exchanger to be heated, then enters the secondary air nozzle, and finally enters the hearth through the secondary air nozzle to be combusted; the flue gas output by the heat exchanger enters a boiler flue through a booster fan and a smoke return interface.
Under the mode of directly increasing the primary air temperature, air output by a primary air fan enters an original primary air heating system to be heated, then enters a newly-increased primary air heater to further increase the temperature, and finally enters a hearth through a primary air inlet of the hearth.
The invention has the following beneficial effects:
according to the system and the method for improving the sludge and garbage disposal amount of the garbage power plant, during specific operation, high-temperature flue gas is extracted from the flue, and therefore pre-drying of sludge and garbage is carried out, secondary air temperature is directly improved, primary air temperature is directly improved, then the sludge and garbage disposal amount of the garbage power plant is improved, technical progress of the garbage power plant is promoted, the use efficiency of national large-scale equipment is improved, and social capital and land area are effectively saved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a high-temperature smoke taking port, 2 is a heat exchanger, 3 is a booster fan, 4 is a smoke return port, 5 is a secondary fan, 6 is a heating device, 7 is a secondary air nozzle, 8 is a primary fan, 9 is an original primary air heating system, and 10 is a newly-added primary air heater.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the system for increasing sludge and garbage disposal amount in a garbage power plant according to the present invention includes a high temperature smoke outlet 1, a heat exchanger 2, a booster fan 3, a smoke return port 4, a secondary fan 5, a heating device 6, a secondary air nozzle 7, a primary fan 8, an original primary air heating system 9, and a newly added primary air heater 10;
the outlet of the high-temperature smoke taking port 1 is connected with the smoke inlet of the heat exchanger 2, the smoke outlet of the heat exchanger 2 is connected with the inlet of the booster fan 3, and the outlet of the booster fan 3 is connected with the inlet of the smoke return interface 4; the outlet of the secondary fan 5 is divided into two paths, wherein one path is connected with the inlet of the low-temperature heating section of the heat exchanger 2 through a first valve, and the other path is connected with a secondary air nozzle 7 through a second valve; an outlet of a low-temperature heating section of the heat exchanger 2 is connected with an inlet of a high-temperature heating section of the heat exchanger 2, or an outlet of the low-temperature heating section of the heat exchanger 2 is connected with an air inlet of a heating device 6, an air outlet of the heating device 6 is connected with an inlet of the high-temperature heating section of the heat exchanger 2, and an outlet of the high-temperature heating section of the heat exchanger 2 is connected with a secondary air nozzle 7; the outlet of the primary air fan 8 is connected with the primary air inlet of the hearth through the original primary air heating system 9 and the newly added primary air heater 10.
The method for improving the sludge and garbage disposal amount of the garbage power plant comprises the following steps:
the following three operation modes are specified:
the first operation mode is used for carrying out pre-drying treatment on sludge and garbage, and simultaneously improving secondary air temperature, and the specific working process is as follows: high-temperature flue gas at about 700 ℃ is extracted by using the high-temperature smoke extraction port 1 and is sent into the heat exchanger 2, air at about 20 ℃ output by the secondary fan 5 is divided into two paths, wherein one path enters a low-temperature heating section of the heat exchanger 2 and is heated to about 300 ℃ by using the high-temperature flue gas, then enters the heating device 6, and the other path enters a hearth through the secondary air nozzle 7; drying sludge or garbage by hot air at about 300 ℃ in a heating device 6, discharging dried gaseous products at about 100 ℃ from a gas outlet of the heating device 6, then feeding the gaseous products into a high-temperature heating section of a heat exchanger 2, discharging the dried sludge or garbage from a solid outlet of the heating device 6, and then feeding the dried sludge or garbage into a primary furnace row for incineration disposal; gaseous products of about 100 ℃ discharged from a gas outlet of the heating device 6 are heated to about 280 ℃ in a high-temperature heating section of the heat exchanger 2, and then enter the secondary air nozzle 7 so as to improve the temperature of secondary air in the secondary air nozzle 7 to over 100 ℃ and enter a hearth along with the secondary air for combustion. The temperature of the flue gas output by the heat exchanger 2 is about 350 ℃, and then the flue gas enters a boiler flue through a booster fan 3 and a smoke return interface 4.
Under the second kind of operation, be used for directly improving the overgrate air temperature, specific process is: high-temperature flue gas at about 700 ℃ is extracted by using the high-temperature smoke extraction port 1 and is sent into the heat exchanger 2, air at about 20 ℃ output by the secondary fan 5 is divided into two paths, wherein one path enters a low-temperature heating section of the heat exchanger 2 and is heated to about 200 ℃ by using the high-temperature flue gas, then enters the heating device 6, and the other path enters a hearth through the secondary air nozzle 7; air of about 200 ℃ output by the low-temperature heating section of the heat exchanger 2 enters the high-temperature heating section of the heat exchanger 2 to raise the temperature of the air to above 320 ℃, then enters the secondary air nozzle 7 to raise the temperature of the secondary air in the secondary air nozzle 7 to above 120 ℃, and finally enters a hearth through the secondary air nozzle 7 to be combusted; the temperature of the flue gas output by the heat exchanger 2 is about 350 ℃, and the flue gas enters a boiler flue through a booster fan 3 and a smoke return interface 4. In addition, an electric heating device can be added on the original secondary air system, the temperature of the secondary air is directly raised to be above 100 ℃, and the temperature of the secondary air is determined according to the sludge co-combustion amount or the garbage disposal amount.
Under the third operation mode, the method is used for directly improving the primary air temperature, and the specific process is as follows: air output by the primary air fan 8 enters the original primary air heating system 9 to be heated, then enters the newly-added primary air heater 10 to further increase the temperature, and finally enters the hearth through the primary air inlet of the hearth, and the air temperature at the outlet of the newly-added primary air heater 10 is determined according to the sludge blending combustion amount or the garbage disposal amount.
Claims (8)
1. A system for improving sludge and garbage disposal amount of a garbage power plant is characterized by comprising a high-temperature smoke taking port (1), a heat exchanger (2), a booster fan (3), a smoke return port (4), a secondary fan (5), a secondary air nozzle (7), a primary fan (8), an original primary air heating system (9) and a newly-added primary air heater (10);
the outlet of the high-temperature smoke taking port (1) is connected with the smoke inlet of the heat exchanger (2), the smoke outlet of the heat exchanger (2) is connected with the inlet of the booster fan (3), and the outlet of the booster fan (3) is connected with the inlet of the smoke return interface (4); the outlet of the secondary fan (5) is divided into two paths, wherein one path is connected with the inlet of the low-temperature heating section of the heat exchanger (2) through a first valve, and the other path is connected with a secondary air nozzle (7) through a second valve; an outlet of a low-temperature heating section of the heat exchanger (2) is connected with an inlet of a high-temperature heating section of the heat exchanger (2), and an outlet of the high-temperature heating section of the heat exchanger (2) is connected with a secondary air nozzle (7); the outlet of the primary air fan (8) is connected with the primary air inlet of the hearth through the original primary air heating system (9) and the newly added primary air heater (10).
2. The system for enhancing sludge and waste disposal capacity of a waste power plant according to claim 1, further comprising a heating device (6); an outlet of a low-temperature heating section of the heat exchanger (2) is connected with an air inlet of the heating device (6), and an air outlet of the heating device (6) is connected with an inlet of a high-temperature heating section of the heat exchanger (2).
3. The system for improving the sludge and garbage disposal capacity of the garbage power plant according to claim 1, wherein the outlet of the secondary air fan (5) is connected with the inlet of the low temperature heating section of the heat exchanger (2) through a first valve.
4. The system for increasing the sludge and garbage disposal quantity in a garbage power plant according to claim 3, wherein the outlet of the secondary air fan (5) is connected with the secondary air nozzle (7) through a second valve.
5. A method for increasing sludge and garbage disposal quantity of a garbage power plant is characterized by comprising a sludge and garbage pre-drying mode, a direct secondary air temperature increasing mode and a direct primary air temperature increasing mode.
6. The method for improving the sludge and garbage disposal amount of the garbage power plant according to claim 5, characterized in that in a sludge and garbage pre-drying mode, high-temperature flue gas is extracted by using a high-temperature flue gas extraction port (1) and sent into the heat exchanger (2), air output by the secondary air fan (5) is divided into two paths, wherein one path enters a low-temperature heating section of the heat exchanger (2) to be heated by using the high-temperature flue gas and then enters the heating device (6), the other path enters a hearth through a secondary air nozzle (7), the heated air dries sludge or garbage in the heating device (6), gaseous products discharged from the heating device (6) enter a high-temperature heating section of the heat exchanger (2), and the dried sludge or garbage is discharged from a solid outlet of the heating device (6) and then sent into a primary hearth to be incinerated; gas output by a high-temperature heating section of the heat exchanger (2) enters a secondary air nozzle (7) so as to improve the temperature of secondary air in the secondary air nozzle (7) and finally enters a hearth along with the secondary air for combustion; the flue gas output by the heat exchanger (2) enters a boiler flue through a booster fan (3) and a smoke return interface (4).
7. The method for improving the sludge and garbage disposal capacity of the garbage power plant according to claim 5, characterized in that under the mode of directly improving the temperature of the secondary air, high-temperature flue gas is extracted by using the high-temperature flue gas extraction port (1) and sent into the heat exchanger (2), air output by the secondary air fan (5) is divided into two paths, wherein one path enters the low-temperature heating section of the heat exchanger (2) and is heated by using the high-temperature flue gas, and then enters the heating device (6), and the other path enters the hearth through the secondary air nozzle (7); hot air output by the low-temperature heating section of the heat exchanger (2) enters the high-temperature heating section of the heat exchanger (2) to be heated, then enters the secondary air nozzle (7), and finally enters the hearth through the secondary air nozzle (7) to be combusted; the flue gas output by the heat exchanger (2) enters a boiler flue through a booster fan (3) and a smoke return interface (4).
8. The method for increasing the sludge and garbage disposal amount of the garbage power plant according to claim 5, wherein in the mode of directly increasing the primary air temperature, the air output by the primary air fan (8) enters the original primary air heating system (9) to be heated, then enters the newly added primary air heater (10) to further increase the temperature, and finally enters the hearth through the primary air inlet of the hearth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210080944.9A CN114413269A (en) | 2022-01-24 | 2022-01-24 | System and method for increasing sludge and garbage disposal amount of garbage power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210080944.9A CN114413269A (en) | 2022-01-24 | 2022-01-24 | System and method for increasing sludge and garbage disposal amount of garbage power plant |
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| CN114413269A true CN114413269A (en) | 2022-04-29 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017329A (en) * | 2012-12-21 | 2013-04-03 | 哈尔滨工业大学 | Hot-blast stove system and method for different-speed circulating fluidized bed |
| CN209485105U (en) * | 2019-01-08 | 2019-10-11 | 华北电力大学 | A kind of primary and secondary air progressive solution system based on the coupling of machine furnace |
| CN111425878A (en) * | 2020-05-11 | 2020-07-17 | 国电科学技术研究院有限公司 | Boiler tail flue gas waste heat degree of depth cascade utilization system |
| CN113091071A (en) * | 2021-03-29 | 2021-07-09 | 首创环投控股有限公司 | System for waste incineration deals with low temperature mummification mud in coordination |
| US20210246059A1 (en) * | 2019-12-23 | 2021-08-12 | Guangdong University Of Technology | Energy-saving sludge drying disposal system |
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2022
- 2022-01-24 CN CN202210080944.9A patent/CN114413269A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017329A (en) * | 2012-12-21 | 2013-04-03 | 哈尔滨工业大学 | Hot-blast stove system and method for different-speed circulating fluidized bed |
| CN209485105U (en) * | 2019-01-08 | 2019-10-11 | 华北电力大学 | A kind of primary and secondary air progressive solution system based on the coupling of machine furnace |
| US20210246059A1 (en) * | 2019-12-23 | 2021-08-12 | Guangdong University Of Technology | Energy-saving sludge drying disposal system |
| CN111425878A (en) * | 2020-05-11 | 2020-07-17 | 国电科学技术研究院有限公司 | Boiler tail flue gas waste heat degree of depth cascade utilization system |
| CN113091071A (en) * | 2021-03-29 | 2021-07-09 | 首创环投控股有限公司 | System for waste incineration deals with low temperature mummification mud in coordination |
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