CN209213870U - 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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- CN209213870U CN209213870U CN201821683161.5U CN201821683161U CN209213870U CN 209213870 U CN209213870 U CN 209213870U CN 201821683161 U CN201821683161 U CN 201821683161U CN 209213870 U CN209213870 U CN 209213870U
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Abstract
The utility model 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.The drying and incineration system of the utility model, 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 utility model relates to environmental technology fields, more particularly, to a kind of desiccation for burning municipal sludge in coal-powder boiler
Incineration 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 due to carrying out desiccation to sludge in advance
It pollutes the environment；
2. pair dewatered sludge carries out landfill disposal, such as deal with improperly, the biomass with pathogen and the toxic of difficulty of degrading
Organic matter 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 fire coal of station boiler
System mostly uses Belt Conveying, and leakproofness is poor, easy emitting offensive odor and the surrounding enviroment for influencing coal handling system.
Utility model content
Technical problem to be solved in the utility model is to provide one kind In view of the above shortcomings of the prior art in coal
The drying and incineration system of municipal sludge is burned in powder furnace.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of burn municipal sludge in coal-powder boiler
Drying and incineration system, including successively interconnected furnace cigarette mixing chamber, predrying pipe and blower mill, wherein described
The smoke inlet of furnace cigarette mixing chamber is connected to the exhanst gas outlet of Pulverized Coal fired Boiler Furnace, the outlet of the blower mill be arranged in
Lack of gas burner connection in Pulverized Coal fired Boiler Furnace, the predrying pipe are also connected to a sludge conveyer；It realizes
Desiccation and burning disposal are carried out to sludge simultaneously in drying and incineration system.
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 utility model are:
1. this system to the drying and incineration processing of sludge is completed in same sealing system, make dewatered sludge and waste water
Pass through high temperature incineration, 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 week
Surrounding environment impacts；
3. the desiccant of this system is using single medium high-temperature flue gas and cooperates recycling exhaust steam temperature adjustment, make drying and incineration system
Temperature adjusting become very simple and convenient；
4. this system is provided with lack of gas light-dark separation device, and recycles gas and use light sidewind, can effectively mitigate
Recycle abrasion of the 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 utility model 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 mill
Coal 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- after-flame
Wind.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, the drying and incineration system that municipal sludge is burned in coal-powder boiler of the utility model, including successively phase
Intercommunicated furnace cigarette mixing chamber 1, predrying pipe 4, blower mill 5 and lack of gas light-dark separation device 7, the lack of gas are deep or light
Separator 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
The smoke inlet of room 1 is connected to the exhanst gas outlet of Pulverized Coal fired Boiler Furnace 21, and the dense side lack of gas of the lack of gas light-dark separation device 7 go out
Mouth is connected to the lack of gas burner 11 being arranged in Pulverized Coal fired Boiler Furnace 21, and the lack of gas burner 11, which is located at, to be set
It sets between the coal burner 22 in Pulverized Coal fired Boiler Furnace 21 and burnout degree 23, the predrying pipe 4 is also defeated with a sludge
Device 3 is sent to be connected to；The light side lack of gas outlet of the lack of gas light-dark separation device 7 is mixed by cycle gas pipe 9 again and again and furnace cigarette
Room 1 is closed to be connected to；The recycling gas pipeline 9 is equipped with recycling gas regulation baffle 8；The blower mill 5 with
Tailing separator 6 is additionally provided between lack of gas light-dark separation device 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 utility model 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 to furnace cigarette mixing chamber
It is interior, and in furnace cigarette mixing chamber with the recycling gas mixing from the light side outlet of lack of gas light-dark separation device to design temperature
It after degree, then is sent in predrying pipe by stove pipe road, predrying is carried out to the municipal sludge from sludge conveyer, later
Grinding and the drying process of sludge are carried out in blower mill, and dust and lack of gas that grinding generates then are sent into coarse powder together
Coarse powder separation is carried out in separator, and underproof dust return blower mill is continued to grind, qualified dust and lack of gas one
It rises and enters lack of gas light-dark separation device progress lack of gas air-coal separating, the light lack of gas isolated are by recycling gas pipeline and follow again
Ring gas regulation baffle 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 it is weary
Feed channel is sent in lack of gas burner, is sprayed into Pulverized Coal fired Boiler Furnace and is carried out burning disposal.
The utility model has the following beneficial effects:
1. this system to the drying and incineration processing of sludge is completed in same sealing system, make dewatered sludge and waste water
Pass through high temperature incineration, 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 week
Surrounding environment impacts；
3. the desiccant of this system is using single medium high-temperature flue gas and cooperates recycling exhaust steam temperature adjustment, make drying and incineration system
Temperature adjusting become very simple and convenient；
4. this system is provided with lack of gas light-dark separation device, and recycles gas and use light sidewind, can effectively mitigate
Recycle abrasion of the 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 utility model is carried out specifically by taking certain 600MW pulverized-coal fired boiler 500 tons of municipal sludges of Sino-Japan processing as an example below
It is bright:
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
The actual parameter of project designs.
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 stream
Amount), about 880 DEG C of desiccant initial temperature (mixing temperature), recycling exhaust steam share is 0.13, and high-temperature flue gas share is 0.87, furnace cigarette
Internal diameter of the pipeline 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 pot
The lack of gas of furnace 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
Position calorific value calculation, municipal sludge burning need to consume boiler heat), the burning of boiler and heat-transfer behavior are influenced little.
After examples detailed above is using the drying and incineration system of the utility model, realize at the desiccation and burning to municipal sludge
Reason, efficiently solves the innocuity treatment problem of municipal sludge.
It should be understood that the above-mentioned specific embodiment of the utility model is used only for exemplary illustration or explains this reality
With novel principle, without constituting limitations of the present invention.Therefore, in the spirit and scope without departing from the utility model
In the case of any modification, the equivalent replacement etc. made, should be included within the scope of protection of this utility model.
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 2 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 between predrying pipe (4), blower mill (5), tailing separator (6) and lack of gas light-dark separation device (7)
Pipeline (12) is interconnected；The outlet of dense side lack of gas and lack of gas burner (11) of lack of gas light-dark separation device (7) pass through weary
Feed channel (10) is interconnected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821683161.5U CN209213870U (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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| CN201821683161.5U CN209213870U (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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282289A (en) * | 2018-10-17 | 2019-01-29 | 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282289A (en) * | 2018-10-17 | 2019-01-29 | 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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