CN109282289A - A kind of drying and incineration system burning municipal sludge in coal-powder boiler - Google Patents
A kind of drying and incineration system burning municipal sludge in coal-powder boiler Download PDFInfo
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- CN109282289A CN109282289A CN201811210412.2A CN201811210412A CN109282289A CN 109282289 A CN109282289 A CN 109282289A CN 201811210412 A CN201811210412 A CN 201811210412A CN 109282289 A CN109282289 A CN 109282289A
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- gas
- lack
- coal
- drying
- municipal sludge
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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
- 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
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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
- F23G5/44—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
-
- 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
- F23G5/50—Control or safety arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of in coal-powder boiler burns the drying and incineration system of municipal sludge, including successively interconnected furnace cigarette mixing chamber, predrying pipe, blower mill and lack of gas light-dark separation device, the smoke inlet of furnace cigarette mixing chamber is connected to the exhanst gas outlet of Pulverized Coal fired Boiler Furnace, the dense side lack of gas outlet of lack of gas light-dark separation device is connected to lack of gas burner, predrying pipe is also connected to a sludge conveyer, the light side lack of gas outlet of lack of gas light-dark separation device is connected to by cycle gas pipe again and again with furnace cigarette mixing chamber, it recycles gas pipeline and is equipped with recycling gas regulation baffle, tailing separator is equipped between blower mill and lack of gas light-dark separation device.Drying and incineration system of the invention, which is able to achieve in same sealing system, successively carries out desiccation and burning disposal to municipal sludge, to efficiently solve the innocuity treatment problem of municipal sludge.
Description
Technical field
The present invention relates to environmental technology fields, more particularly, to a kind of anhydration and incineration for burning municipal sludge in coal-powder boiler
System.
Background technique
Municipal sludge is the waste generated when sewage treatment plant's sewage treatment, (is accounted for about at predominantly moisture is grouped as
90%), ash content (accounting for about 6%) and combustible (accounting for about 4%), combustible therein are mainly biomass and degradation with pathogen
Difficult toxic organic compound, meeting emitting offensive odor, can cause seriously to pollute if not being effectively treated it to environment, so, it is right
Being effectively treated for sludge has become one of key areas of environmental protection.
Currently used urban sludge treating method is first to carry out desiccation to sludge, then fill out to the dewatered sludge after desiccation
Bury or stove burn or station boiler burn etc., the waste water generated in sludge drying is individually handled.
Currently used method for sludge treatment is primarily present following deficiency:
1. causing to contain poisonous and harmful substance in the waste water generated, processing is difficult, easily to ring due to carrying out desiccation to sludge in advance
Border pollutes；
2. pair dewatered sludge carries out landfill disposal, such as deal with improperly, the biomass with pathogen and the toxic organic of difficulty that degrade
Object easily causes secondary pollution to soil and environment；
3. pair dewatered sludge carries out stove burning, incineration temperature is low, and needs using additional burning fuel；
4. pair dewatered sludge carries out station boiler burning, generally it is mixed into fire coal using dewatered sludge, the coal burning system of station boiler
Belt Conveying is mostly used, leakproofness is poor, easy emitting offensive odor and the surrounding enviroment for influencing coal handling system.
Summary of the invention
The technical problem to be solved by the present invention is to provide one kind In view of the above shortcomings of the prior art in coal-powder boiler
The middle drying and incineration system for burning municipal sludge.
The technical solution adopted by the present invention to solve the technical problems is: a kind of to burn the dry of municipal sludge in coal-powder boiler
Change incineration system, including successively interconnected furnace cigarette mixing chamber, predrying pipe and blower mill, wherein the furnace cigarette
The smoke inlet of mixing chamber is connected to the exhanst gas outlet of Pulverized Coal fired Boiler Furnace, the outlet of the blower mill and is arranged in coal dust
Lack of gas burner connection on boiler furnace, the predrying pipe are also connected to a sludge conveyer；It realizes dry
Change in incineration system and desiccation and burning disposal are carried out to sludge simultaneously.
Further, it is equipped with lack of gas light-dark separation device between the blower mill and lack of gas burner, realizes
To from blower mill dust and gas carry out air-coal separating processing.
Further, the dense side lack of gas outlet of the lack of gas light-dark separation device is connected to lack of gas burner, will be highly concentrated
Light lack of gas, dust are sent into lack of gas burner, to carry out full combustion processing in Pulverized Coal fired Boiler Furnace.
Further, the light side lack of gas outlet of the lack of gas light-dark separation device is mixed by cycle gas pipe again and again and furnace cigarette
Room connection is closed, the desiccant of drying and incineration system using single medium high-temperature flue gas and cooperates recycling exhaust steam temperature adjustment, so that desiccation
The temperature of incineration system is adjusted very simply, conveniently, meanwhile, recycling gas uses light sidewind, can effectively mitigate and follow again
Abrasion of the ring gas to controllable register, while the dust concentration that can also be greatly decreased in stove pipe road.
Further, the recycling gas pipeline is equipped with recycling gas regulation baffle, realizes to light side gas stream
The control for measuring size, to facilitate regulation and control system temperature.
Further, tailing separator is equipped between the blower mill and lack of gas light-dark separation device, realization will not
Qualified coarse powder is separated, and is returned to and is continued to grind in blower mill, to guarantee to enter lack of gas dense-and-weak separator and weary
All dust and lack of gas of gas burner are qualified, it is ensured that efficiency of combustion.
Further, the lack of gas burner is located at the coal burner and after-flame being arranged in Pulverized Coal fired Boiler Furnace
Between wind, due to being herein the highest temperature zone of Pulverized Coal fired Boiler Furnace, be conducive to effective burning of sludge, meanwhile, system
Middle leaked-in air can be used as the use of pulverized-coal fired boiler burnout degree in addition to supplying sludge incineration.
Further, pass through furnace cigarette between the exhanst gas outlet of the Pulverized Coal fired Boiler Furnace, furnace cigarette mixing chamber and predrying pipe
Pipeline is interconnected；It is mutual by pipeline between predrying pipe, blower mill, tailing separator and lack of gas dense-and-weak separator
Connection；The dense side lack of gas outlet of lack of gas dense-and-weak separator is interconnected with lack of gas burner by lack of gas pipeline.
The beneficial effects of the present invention are:
1. this system to the drying and incineration processing of sludge is completed in same sealing system, pass through dewatered sludge and waste water
High temperature incineration is crossed, can effectively eliminate all poisonous and harmful substances；
2. this system uses blower mill system, sludge access port is set to be in subnormal ambient, so that so that it will not to peripheral ring
Border impacts；
3. the desiccant of this system is using single medium high-temperature flue gas and cooperates recycling exhaust steam temperature adjustment, make the temperature of drying and incineration system
Degree, which is adjusted, becomes very simple and convenient；
4. this system is provided with lack of gas light-dark separation device, and recycles gas and use light sidewind, it can effectively mitigate and follow again
Abrasion of the ring gas to controllable register, while the dust concentration that can also be greatly decreased in stove pipe road；
5. this system also has many advantages, such as that system is simple, treatment effeciency is high and environment influence is small.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the drying and incineration system that the present invention burns municipal sludge in coal-powder boiler；
Fig. 2 is the structural schematic diagram of lack of gas light-dark separation device；
In the figure, it is marked as 1- furnace cigarette mixing chamber, 2- stove pipe road, 3- sludge conveyer, 4- predrying pipe, 5- fan coal-grinding
Machine, 6- tailing separator, 7- lack of gas light-dark separation device, 8- recycle gas regulation baffle, and 9- recycles gas pipeline, 10-
Lack of gas pipeline, 11- lack of gas burner, 12- pipeline, 21- Pulverized Coal fired Boiler Furnace, 22- coal burner, 23- burnout degree.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, the drying and incineration system of the invention that municipal sludge is burned in coal-powder boiler, including successively mutually interconnect
Logical furnace cigarette mixing chamber 1, predrying pipe 4, blower mill 5 and lack of gas light-dark separation device 7, the lack of gas air-coal separating
Device 7 is a kind of gas light-dark separation device being commonly used in industry, and structure is as shown in Figure 2；The furnace cigarette mixing chamber 1
Smoke inlet is connected to the exhanst gas outlet of Pulverized Coal fired Boiler Furnace 21, the outlet of the dense side lack of gas of the lack of gas light-dark separation device 7 with
The lack of gas burner 11 being arranged in Pulverized Coal fired Boiler Furnace 21 is connected to, and the lack of gas burner 11 is located at setting and exists
Between coal burner 22 in Pulverized Coal fired Boiler Furnace 21 and burnout degree 23, the predrying pipe 4 is also conveyed with a sludge and is filled
Set 3 connections；The light side lack of gas outlet of the lack of gas light-dark separation device 7 passes through cycle gas pipe 9 again and again and furnace cigarette mixing chamber 1
Connection；The recycling gas pipeline 9 is equipped with recycling gas regulation baffle 8；The blower mill 5 and lack of gas is dense
Tailing separator 6 is additionally provided between light separator 7.
Specifically pass through furnace between the exhanst gas outlet, furnace cigarette mixing chamber 1 and predrying pipe 4 of the Pulverized Coal fired Boiler Furnace 21
Smoke pipeline 2 is interconnected；Pass through between predrying pipe 4, blower mill 5, tailing separator 6 and lack of gas dense-and-weak separator 7
Pipeline 12 is interconnected；The outlet of dense side lack of gas and the lack of gas burner 11 of lack of gas dense-and-weak separator 7 pass through lack of gas pipeline 10
It is interconnected.
The operational process that the present invention burns the drying and incineration system of municipal sludge in coal-powder boiler is as follows:
When system is run, the high-temperature flue gas of Pulverized Coal fired Boiler Furnace exhanst gas outlet is extracted first and is transported in furnace cigarette mixing chamber, and
In furnace cigarette mixing chamber and after the recycling gas mixing to design temperature from the light side outlet of lack of gas light-dark separation device,
It is sent in predrying pipe by stove pipe road again, predrying is carried out to the municipal sludge from sludge conveyer, later in wind
Grinding and the drying process for carrying out sludge in coal pulverizer are fanned, dust and lack of gas that grinding generates then are sent into coarse powder separation together
Carry out coarse powder separation in device, and underproof dust return blower mill continued to grind, qualified dust and lack of gas together into
Enter lack of gas light-dark separation device and carry out lack of gas air-coal separating, the light lack of gas isolated pass through recycling gas pipeline and recycling gas
Body controllable register is sent in furnace cigarette mixing chamber and mixes with high-temperature flue gas, and the dense lack of gas isolated, dust then pass through blast pipe
Road is sent in lack of gas burner, is sprayed into Pulverized Coal fired Boiler Furnace and is carried out burning disposal.
The invention has the benefit that
1. this system to the drying and incineration processing of sludge is completed in same sealing system, pass through dewatered sludge and waste water
High temperature incineration is crossed, can effectively eliminate all poisonous and harmful substances；
2. this system uses blower mill system, sludge access port is set to be in subnormal ambient, so that so that it will not to peripheral ring
Border impacts；
3. the desiccant of this system is using single medium high-temperature flue gas and cooperates recycling exhaust steam temperature adjustment, make the temperature of drying and incineration system
Degree, which is adjusted, becomes very simple and convenient；
4. this system is provided with lack of gas light-dark separation device, and recycles gas and use light sidewind, it can effectively mitigate and follow again
Abrasion of the ring gas to controllable register, while the dust concentration that can also be greatly decreased in stove pipe road；
5. this system also has many advantages, such as that system is simple, treatment effeciency is high and environment influence is small.
Embodiment
The present invention is described in detail by taking certain 600MW pulverized-coal fired boiler 500 tons of municipal sludges of Sino-Japan processing as an example below:
Boiler and drying and incineration system parameter in the present embodiment etc. are only to illustrate design method, and specific design should be by engineering project
Actual parameter design.
Unit boiler is 600MW coal-powder boiler, and fuel uses bituminous coal, major parameter: Mar 7.40%, Mad 4.10%,
Aar 15.18%, Vdaf 34.50%, Qnet, ar 25.08MJ/kg, system smoking mouth is in boiler furnace top, the height of extraction
About 1000 DEG C of warm flue-gas temperature；
The key property parameter of municipal sludge: Mar 88%, Mad 8.8%, Aar 5.19%, Vdaf 88.95%, Qnet, ad
9.74MJ/kg, Qnet, ar -0.89MJ/kg, Car 3.25%, Har 0.48%, Oar 2.34%, Nar 0.64%, Sar
0.12%；
Municipal sludge day output is 500 tons, and system design rating presses 21t/h；
By design calculation result, under design conditions, the dry dosage of system is about 2.62kg/kg(by sludge quality flow), it does
About 880 DEG C of drying prescription initial temperature (mixing temperature), recycling exhaust steam share is 0.13, and high-temperature flue gas share is 0.87, in stove pipe road
Diameter chooses 1500mm, and managing interior drying oven cigarette speed is about 28m/s, and predrying pipe and stove pipe road are isometrical, and height is chosen
35000mm, lack of gas internal diameter of the pipeline choose 1200mm, and managing interior lack of gas speed is about 25m/s；
It is calculated by design conditions, drying and incineration system extracting high-temperature exhaust gas volumn accounts for about the 1.8% of boiler smoke tolerance, is sent into boiler
Lack of gas account for about the 3.1% of boiler smoke tolerance, and municipal sludge input heat accounts for about boiler and always inputs the -0.3%(of heat by low level heat
Value calculates, and municipal sludge burning needs to consume boiler heat), the burning of boiler and heat-transfer behavior are influenced little.
After examples detailed above uses drying and incineration system of the invention, the desiccation and burning disposal to municipal sludge are realized,
Efficiently solve the innocuity treatment problem of municipal sludge.
It should be understood that above-mentioned specific embodiment of the invention is used only for exemplary illustration or explains of the invention
Principle, but not to limit the present invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent replacement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of drying and incineration system for burning municipal sludge in coal-powder boiler, which is characterized in that including what is be successively interconnected
Furnace cigarette mixing chamber (1), predrying pipe (4) and blower mill (5), wherein the smoke inlet of the furnace cigarette mixing chamber (1) with
The exhanst gas outlet of Pulverized Coal fired Boiler Furnace (21) is connected to, and the outlet of the blower mill (5) and is arranged in Pulverized Coal fired Boiler Furnace
(21) lack of gas burner (11) connection on, the predrying pipe (4) are also connected to a sludge conveyer (3).
2. the drying and incineration system according to claim 1 for burning municipal sludge in coal-powder boiler, which is characterized in that described
Blower mill (5) and lack of gas burner (11) between be equipped with lack of gas light-dark separation device (7).
3. the drying and incineration system according to claim 1 for burning municipal sludge in coal-powder boiler, which is characterized in that described
The dense side lack of gas outlet of lack of gas light-dark separation device (7) is connected to lack of gas burner (11).
4. the drying and incineration system according to claim 2 for burning municipal sludge in coal-powder boiler, which is characterized in that described
The light side lack of gas outlet of lack of gas light-dark separation device (7) is connected to by cycle gas pipe (9) again and again with furnace cigarette mixing chamber (1).
5. the drying and incineration system according to claim 4 for burning municipal sludge in coal-powder boiler, which is characterized in that described
Recycling gas pipeline (9) be equipped with recycling gas regulation baffle (8).
6. the drying and incineration system according to claim 2 for burning municipal sludge in coal-powder boiler, which is characterized in that described
Blower mill (5) and lack of gas light-dark separation device (7) between be equipped with tailing separator (6).
7. the drying and incineration system according to claim 1 for burning municipal sludge in coal-powder boiler, which is characterized in that described
Lack of gas burner (11) be located at coal burner (22) on Pulverized Coal fired Boiler Furnace (21) and burnout degree (23) be set
Between.
8. the drying and incineration system according to claim 2 for burning municipal sludge in coal-powder boiler, which is characterized in that described
Pass through stove pipe road (2) phase between the exhanst gas outlet of Pulverized Coal fired Boiler Furnace (21), furnace cigarette mixing chamber (1) and predrying pipe (4)
It is intercommunicated；Pass through pipe between predrying pipe (4), blower mill (5), tailing separator (6) and lack of gas dense-and-weak separator (7)
Road (12) is interconnected；The dense side lack of gas outlet of lack of gas dense-and-weak separator (7) passes through blast pipe with lack of gas burner (11)
Road (10) is interconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811210412.2A CN109282289A (en) | 2018-10-17 | 2018-10-17 | A kind of drying and incineration system burning municipal sludge in coal-powder boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811210412.2A CN109282289A (en) | 2018-10-17 | 2018-10-17 | A kind of drying and incineration system burning municipal sludge in coal-powder boiler |
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| CN109282289A true CN109282289A (en) | 2019-01-29 |
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| CN201811210412.2A Pending CN109282289A (en) | 2018-10-17 | 2018-10-17 | A kind of drying and incineration system burning municipal sludge in coal-powder boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112325299A (en) * | 2020-11-23 | 2021-02-05 | 华能湖南岳阳发电有限责任公司 | Sludge treatment system and method |
| CN113357639A (en) * | 2021-05-24 | 2021-09-07 | 上海交通大学 | Sludge treatment and coal NOxEmission reduction integrated industrial boiler device |
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| CN209213870U (en) * | 2018-10-17 | 2019-08-06 | 东方电气集团东方锅炉股份有限公司 | A kind of drying and incineration system burning municipal sludge in coal-powder boiler |
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Patent Citations (6)
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| CN105509085A (en) * | 2015-12-18 | 2016-04-20 | 上海锅炉厂有限公司 | System and method for reducing boiler NOx emission by tertiary air concentrated-diluted separation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112325299A (en) * | 2020-11-23 | 2021-02-05 | 华能湖南岳阳发电有限责任公司 | Sludge treatment system and method |
| CN113357639A (en) * | 2021-05-24 | 2021-09-07 | 上海交通大学 | Sludge treatment and coal NOxEmission reduction integrated industrial boiler device |
| CN113357639B (en) * | 2021-05-24 | 2022-04-19 | 上海交通大学 | Sludge treatment and coal NOxEmission reduction integrated industrial boiler device |
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