CN203653400U - Sludge drying and incineration power generation integrated system - Google Patents
Sludge drying and incineration power generation integrated system Download PDFInfo
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- CN203653400U CN203653400U CN201320674375.7U CN201320674375U CN203653400U CN 203653400 U CN203653400 U CN 203653400U CN 201320674375 U CN201320674375 U CN 201320674375U CN 203653400 U CN203653400 U CN 203653400U
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Abstract
The utility model provides a sludge drying and incineration power generation integrated system. According to the sludge drying and incineration power generation integrated system, a gas turbine is connected with a generator, the smoke exhaust opening of the gas turbine is communicated with a sludge drying device, the outlet of the sludge drying device is connected with a gas-solid separation device, the dry sludge outlet of the gas-solid separation device is communicated with a hopper, the hopper is communicated with a charging pipe of a fluidized-bed boiler, the smoke outlet of the fluidized-bed boiler is communicated with a separator, and the solid outlet of the separator is communicated with the charging opening of the fluidized-bed boiler through a return device; residual heat of smoke of the gas turbine serves as a heat source for sludge drying, so that the graded use of energy is realized, the heat efficiency is high, the problem that sulfur dioxide, nitrogen oxides, dust and the like generated during coal-combusted sludge drying are emitted is avoided, and the problem that underground water and environment are polluted due to sludge landfill and land use is effectively avoided; the moisture content of dried sludge is lowered greatly, stable combustion in the fluidized-bed boiler can be realized, and auxiliary fuel is not required to be added, so that the generation of a highly toxic pollutant, namely dioxin, is avoided.
Description
Technical field
The utility model relates to sewage sludge process field, particularly a kind of sludge anhydration burning generating integrated system.
Background technology
(1) output of sewage sludge and harm thereof
Along with the quick propelling of Development of China's Urbanization, the sewage disposal industry of China is developed rapidly, sewage treatment capacity and processing rate rapid development, and the output of sewage sludge increases sharply.By the end of the end of the year 2009,1992 of the urban wastewater treatment firms that China puts into operation, the amount of disposing of sewage 28,000,000,000 m
3, approximately 2,005 ten thousand tons, the mud of generation water ratio 80%.Along with the increase of the level of urbanization and sewage load, sludge quantity will be broken through 3,000 ten thousand tons very soon.The composition of mud and chemical property complexity, both comprised organism, plant nutrient ingredient etc., also comprises the objectionable impuritiess such as heavy metal.The Hygienic Index of mud mainly comprises total plate count, excrement colibacillus group number, parasitic ovum content etc.Mud contains the hazardous and noxious substances such as pathogenic agent, heavy metal and persistent organism, without effectively processing and dispose, very easily underground water, soil etc. is caused to secondary pollution.
Through the development of decades, the sludge treatment disposal technology of the developed regions such as American-European, Japanese and country has been mature on the whole, and relevant laws and regulations and technological standard are substantially perfect.Main technological route comprises: burning disposal, sanitary landfill, soil utilization etc., can realize the minimizing of mud, the object of innoxious, stabilization.
According to incompletely statistics, current national urban wastewater treatment firm mud only has small portion to carry out sanitary landfill, soil utilization, burning and building materials utilization etc., and major part is not carried out normalized processing disposal, the environmental safety and the public health that directly threaten China, reduce the environmental benefit of sewage treatment facility greatly.
(2) basic demand of sludge treatment
Sludge treatment should meet safety and environmental protection, recycle, the principle such as energy-saving and cost-reducing.In the treating processes of mud, mud contains the pollution control criterion that the hazardous and noxious substances such as pathogenic agent, heavy metal and persistent organism must reach; Make full use of organic matter contained in mud, various nutritive element and energy, the organic matter in mud and nutritive element are added in soil, or reclaim the energy in mud by the technology such as anaerobic digestion or burning; Should avoid adopting the processing disposal technology that consumes a large amount of high-quality clean energy, material and land resources, process disposal to realize mud low-carbon (LC).
The thermal source that country encourages to utilize biogas heat energy, rubbish and the sludge incineration waste heat, power station waste heat or other waste heats that produce in anaerobic sludge digestion process to dispose as sludge treatment.
(3) sludge disposal technology
Sludge disposal comprises the modes such as soil utilization, burning, landfill.
The soil utilization of mud comprises for land reclamation, for afforestation, for agricultural etc.But the soil utilization of mud has very strict requirement to the shale of mud, otherwise may produce secondary pollution to underground water and surrounding environment.
The landfill disposal of mud not only needs to take a large amount of soils, and landfill yard also discharges a large amount of foul gass, methane isothermal chamber gas, if mishandling, also can cause groundwater pollution.
Sludge incineration treatment technology scheme is: the wet mud that is first 80% to water ratio carries out mummification, and the mud after mummification enters incinerator and completes burning disposal.The burning disposal of mud can farthest realize minimizing and stabilization, almost kills in mud 100% germ, and innoxious degree is high, but also can carry out thermal utilization to the combustiblematerials in mud, realizes the resource utilization of sludge heat energy.But, in the drying process of sludge incineration processing, needing to consume coal-fired grade for high-grade energy, cost is higher; In addition, wet sludge anhydration process need consumption fire coal provides the energy, the atmospheric polluting materials such as coal burning discharge sulfurous gas, oxynitride, dust.
Utility model content
The purpose of this utility model is to provide a kind of fume afterheat discharging after gas turbine power generation that utilizes to carry out low cost mummification to wet mud, and the sludge anhydration burning generating integrated system that utilizes the heat resource of dewatered sludge to generate electricity.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of sludge anhydration burning generating integrated system, comprise internal combustion turbine, internal combustion turbine is connected with generator, internal combustion turbine smoke outlet is connected with mud drying device inlet mouth, the mud import of mud drying device is communicated with mud feeding mechanism, mud drying device outlet is connected with gas-solid separating device, the dewatered sludge outlet of gas-solid separating device is connected with hopper, hopper is connected with the opening for feed of fluidized-bed combustion boiler, fluidized-bed combustion boiler is provided with the combustion air entrance and the Wingdale tube cell that are communicated with burner hearth, fluidized-bed combustion boiler exhanst gas outlet is connected with separator, separator gas outlet is connected with induced draft fan, separator solid outlet is connected with the opening for feed of fluidized-bed combustion boiler through material returning device.
The vapour line outlet of described fluidized-bed combustion boiler is connected with steam turbine, steam turbine is connected with generator, after connecting interchanger, described separator gas outlet is connected with induced draft fan, the exhaust steam outlet of steam turbine is connected with condenser, condenser is connected with interchanger cold water inlet through service pump, and interchanger vapour outlet is communicated with the vapour line entrance of fluidized-bed combustion boiler.
Described mud drying device is spray-drying tower, on spray-drying tower inlet mouth, is provided with air-distributing device, in mud import, is provided with spraying gun; Described mud feeding mechanism comprises slurry tank, and slurry tank is communicated with spraying gun after connecting successively strainer and sludge pump, and internal combustion turbine smoke outlet is connected with air-distributing device.
Described gas-solid separating device is deep bed filter, and deep bed filter waste gas outlet is connected with odor removal through induced draft fan, and the outlet of deep bed filter dewatered sludge is connected with hopper.
Described odor removal is UV photodissociation treating plant.
The utility model compared with prior art, has the following advantages:
(1) utilize the fume afterheat of internal combustion turbine as the thermal source of sludge drying, realize energy cascade utilization, thermo-efficiency is high, can save the fuel cost of sludge drying, has also avoided the emission problem of the atmospheric polluting materials such as sulfurous gas, oxynitride and dust that burning coal dewatered sludge produces.
(2) through anhydration and incineration processing, minimizing, the stabilization effect of mud are remarkable, and short due to sludge drying, burning disposal required time, and the utility model, under the condition of less land used, can be processed a large amount of mud.Polluted underground water and the environmental problem of effectively avoiding Sludge landfill and soil utilization to cause.
(3) moisture percentage in sewage sludge after mummification significantly reduces, the net calorific value of mud can be up to more than 8000kJ/kg, can stable burning in fluidized-bed combustion boiler, do not need to add under the condition of auxiliary fuel, bed temperature can stable maintenance more than 850 ℃, meet the temperature condition of sludge incineration, avoid the generation of hypertoxic pollutent dioxin.
Further, the Steam Actuation steam-electric power unit generating that utilizes sludge incineration to produce, has realized the utilization of sludge energy resource, meets the energy-saving and emission-reduction requirement of sludge treatment, further improves energy utilization rate.
Further, the utility model utilizes spraying type drying tower to carry out dewatered sludge, hot flue gas directly contacts in drying tower with mud granule, and thermo-efficiency is high, has solved the wear problem of the low and heating surface of thermo-efficiency that conventional art adopts the sludge drying mode of indirect heating to exist.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-condensate pipe, 2-Wingdale tube cell, 3-gas blower, 4-service pump, 5-feed-pipe, 6-material returning device, 7-interchanger, 8-smoke eliminator, 9-induced draft fan, 10-deep bed filter, 11-separator, 12-hopper, 13-supply pipe, 14-fluidized-bed combustion boiler, 15-expects gas hybrid channel, 16-spray-drying tower, 17-vapour pipe, 18-vapor pipe, 19-odor removal, 20-slurry tank, 21-slurry pipe, 22-strainer, 23-sludge pump, 24-spraying gun, 25-air-distributing device, 26-smoke exhaust pipe, 27-gas line, 28-internal combustion turbine, 29-generator, 30-blast main, 31-steam turbine, 33-condenser.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Referring to Fig. 1, the utility model mainly comprises internal combustion turbine 28, spray-drying tower 16, deep bed filter 10, odor removal 19, fluidized-bed combustion boiler 14, interchanger 7, smoke eliminator 8 etc.
The air intlet of described internal combustion turbine 28 is connected with blast main 30, fuel gas inlet is connected with gas line 27, internal combustion turbine 28 is connected with generator 29, described internal combustion turbine 28 is connected with the inlet mouth of spray-drying tower 16 by smoke exhaust pipe 26, slurry tank 20 is connected with the mud import of spray-drying tower 16 by slurry pipe 21, the outlet of spray-drying tower 16 is connected with the import of deep bed filter 10, the waste gas outlet of deep bed filter 10 is connected with odor removal 19, induced draft fan 9 is set on the inlet flue duct of odor removal 19, the outlet of odor removal 19 is connected with vapor pipe 18, the dewatered sludge outlet of deep bed filter 10 is connected with hopper 12 by supply pipe 13, hopper 12 is connected with the feed-pipe 5 of fluidized-bed combustion boiler 14, fluidized-bed combustion boiler 14 is connected with steam turbine 31 by vapour pipe 17, steam turbine 31 is connected with generator 29, fluidized-bed combustion boiler 14 vapour line outlets are connected with condenser 33, service pump 4 in turn, service pump 4 is connected with interchanger 7 cold water inlets, and interchanger 7 vapour outlets are communicated with the vapour line entrance of fluidized-bed combustion boiler 14, fluidized-bed combustion boiler 14 exhanst gas outlets are connected with separator 11, and separator 11 is connected with interchanger 7, and the exhanst gas outlet of interchanger 7 is connected with smoke eliminator 8.
Air-distributing device 25 and spraying gun 24 are set on described spray-drying tower 16; High-temperature flue gas from smoke exhaust pipe 26 enters spray-drying tower 16 through air-distributing device 25, the slurries that come from slurry tank 20 are entered after spraying gun 24 is atomized into slurry drops and are entered spray-drying tower 16 by slurry pipe 21, and strainer 22 and sludge pump 23 are also set on slurry pipe 21; Slurry drops and high-temperature flue gas are at the interior direct contact heat transfer of spray-drying tower 16, most moisture in slurry drops enter into flue gas after heating evaporation, the mud granule of mummification and flue gas together leave spray-drying tower 16, enter deep bed filter 10 through material gas hybrid channel 15;
The bottom of described fluidized-bed combustion boiler 14 arranges gas blower 3, Wingdale tube cell 2, feed-pipe 5; Dewatered sludge from deep bed filter 10 enters hopper 12 through supply pipe 13, further enters fluidized-bed combustion boiler 14 through feed-pipe 5; The exhanst gas outlet on fluidized-bed combustion boiler 14 tops is connected with separator 11, the particle that separator 11 traps returns to fluidized-bed combustion boiler 14 through material returning device 6 and feed-pipe 5, flue gas after gas solid separation enters interchanger 7, flue-gas temperature is left interchanger 7 after reducing, enter smoke eliminator 8, the flue gas after purification is drained in atmosphere through induced draft fan 9;
The high temperature and high pressure steam that fluidized-bed combustion boiler 14 produces enters steam turbine 31 and pushing generator 29 generates electricity through vapour pipe 17, the exhaust steam that steam turbine 31 discharges enters condenser 33 and is transformed into condensed water, condenser 33 is connected with service pump 4 by condensate pipe 1, and condensed water enters interchanger 7 and absorbs heat after service pump 4 pressurizations.
The fume afterheat of discharge of gas turbine is as the thermal source of mud spraying mummification, and sludge drying tail gas is discharge after odor removal purifies, and the mud after mummification enters fluidized-bed combustion boiler and directly burns generation steam, promotes turbine driven set generating.Sweet natural gas high-grade energy generating of the present utility model, low-grade flue gas waste heat, for dewatered sludge, are realized energy step and are efficiently utilized, and energy utilization rate is high; Utilize sludge incineration after mummification generating, realized innoxious, resource utilization, the minimizing processing of mud; The burning disposal of mud does not need to add coal-fired grade for auxiliary fuel, and the processing cost quantity discharged low, atmospheric polluting material of mud is low.Therefore, the utility model can be realized the processing of mud and dispose and comprehensive utilization under the prerequisite of safety, environmental protection and economy, the object that reaches energy-saving and emission-reduction and develop a circular economy.
Disclose a kind of generating integrated method of sludge anhydration burning simultaneously, comprised the following steps:
(1), high-pressure gas and promote turbine high speed rotating in the interior burning of internal combustion turbine 28 through the high-pressure air of overdraft, and pushing generator 29 generates electricity, and finishes the flue gas of merit and discharges through the smoke outlet of internal combustion turbine 28, temperature is between 350 ℃ to 550 ℃.High-temperature flue gas enters into the air-distributing device 25 being arranged on spray-drying tower 16 through smoke exhaust pipe 26, after air-distributing device 25 carries out rectification, enter into spray-drying tower 16;
Through the water ratio of the sludge cake of mechanical mummification, in 80% left and right, sludge cake stirs and is adjusted to the mud slurries of certain water ratio through adding water slurry tank 20 is interior, and can realize atomization.Mud slurries enter into slurry pipe 21, filter, are delivered to the spraying gun 24 being arranged on spray-drying tower 16 through sludge pump 23 through filter 22, and mud slurries enter into spray-drying tower 16 after being atomized into the sludge slurry drop with certain grain size distribution.
Hot flue gas after rectification and sludge slurry drop enter into the interior direct contact heat transfer of spray-drying tower 16, most of moisture evaporation in slurry drops enters into flue gas, after flue gas heat release, temperature is reduced to below 100 ℃, mud granule after mummification and flue gas together leave spray-drying tower 16, enter into deep bed filter 10 through material gas hybrid channel 15.The fabric of a large amount of vesicular structures of the interior layout of deep bed filter 10, when fabric at flue gas by this vesicular structure, mud granule that flue gas carries is separated to get off, and delivers to hopper 12 through supply pipe 13.Flue gas after dedusting enters into odor removal 19 through induced draft fan 9, this odor removal preferentially adopts high energy UV light beam cracking deodorizing principle, make the molecular linkage cracking of bacterium in foul gas, destroy the nucleic acid (DNA) of bacterium, carry out oxidizing reaction by ozone again, thoroughly reach the object of deodorization and kill bacteria.Flue gas after purification is discharged in atmosphere through vapor pipe 18;
(2), the dewatered sludge in hopper 12 enters into fluidized-bed combustion boiler 14 through feed-pipe 5, the combustion air providing with gas blower 3 burns, make fire box temperature be stabilized in 850 ℃ of left and right, effectively kill a large amount of germs in mud, make the organic composition combustion decomposition in mud.The limestone powder that desulfuration in furnace is used enters into burner hearth through Wingdale tube cell 2, reacts the SO generating with sludge incineration
2the generation vitriol that combines, realizes SO
2effective elimination.Flue gas carries particle and leaves burner hearth and enter into separator 11, complete gas solid separation, the separated device 11 of most of particle traps and returns to burner hearth through material returning device 6, high-temperature flue gas leaves that separator 11 enters into interchanger 7 and to being arranged in heating surface heat release wherein, and temperature is reduced to 100 ℃ of following flue gases and leaves interchanger 7 and enter into flue gas cleaner 8.The preferred gac waste gas purification apparatus of this smoke eliminator, the heavy metal, dioxin pollutent in absorption flue gas, and in conjunction with electric precipitator or sack cleaner.The flue gas purifying after up to standard is discharged in atmosphere through induced draft fan 9;
As the further prioritization scheme of the utility model method, the high temperature and high pressure steam that fluidized-bed combustion boiler 14 vapour lines produce enters steam turbine 31 and pushing generator 29 generates electricity through vapour pipe 17, the exhaust steam that steam turbine 31 discharges enters condenser 33, after heating, condense into water, enter into service pump 4 by condensate pipe 1, after service pump 4 pressurizations, entering into interchanger 7 absorbs heat, and further after heating, be transformed into high temperature and high pressure steam through fluidized-bed combustion boiler 14, enter into again vapour line, complete circulation.
Technique effect of the present utility model has:
1, utilize the fume afterheat discharging after gas turbine power generation in spray-drying tower to wet mud drop direct heating mummification, mummification intensity is large, the output of sludge drying is large.
2, by odor removal, the tail gas producing in dewatered sludge process is carried out to deodorizing purifying treatment, little to the disadvantageous effect of atmospheric environment.
3, utilize fluidized-bed combustion boiler to carry out burning disposal to dewatered sludge, flameholding, effectively realizes the minimizing of sludge treatment, innoxious, stabilization, and generates electricity by sludge incineration, realizes effective utilization of sludge hot resource, has realized the resource utilization of sludge treatment.
4, the mud after mummification adopts the treatment capacity of burning mode processing large, is applicable to the processing that extensive water treatment plant produces a large amount of mud.Groundwater pollution and problem of environmental pollution that the utilization of mud soil and landfill disposal cause are solved.
Claims (5)
1. a sludge anhydration burning generating integrated system, it is characterized in that: comprise internal combustion turbine (28), internal combustion turbine (28) is connected with generator (29), internal combustion turbine (28) smoke outlet is connected with mud drying device inlet mouth, the mud import of mud drying device is communicated with mud feeding mechanism, mud drying device outlet is connected with gas-solid separating device, the dewatered sludge outlet of gas-solid separating device is connected with hopper (12), hopper (12) is connected with the opening for feed of fluidized-bed combustion boiler (14), fluidized-bed combustion boiler (14) is provided with the combustion air entrance and the Wingdale tube cell (2) that are communicated with burner hearth, fluidized-bed combustion boiler (14) exhanst gas outlet is connected with separator (11), separator (11) pneumatic outlet is connected with induced draft fan (9), separator (11) solid outlet is connected with the opening for feed of fluidized-bed combustion boiler (14) through material returning device (6).
2. sludge anhydration burning generating integrated system according to claim 1, it is characterized in that: the vapour line outlet of described fluidized-bed combustion boiler (14) is connected with steam turbine (31), steam turbine (31) is connected with generator (29), described separator (11) pneumatic outlet is connected with induced draft fan (9) after connecting interchanger (7), the exhaust steam outlet of steam turbine (31) is connected with condenser (33), condenser (33) is connected with interchanger (7) cold water inlet through service pump (4), interchanger (7) vapour outlet is communicated with the vapour line entrance of fluidized-bed combustion boiler (14).
3. sludge anhydration burning generating integrated system according to claim 1, it is characterized in that: described mud drying device is spray-drying tower (16), on spray-drying tower (16) inlet mouth, be provided with air-distributing device (25), in mud import, be provided with spraying gun (24); Described mud feeding mechanism comprises slurry tank (20), and slurry tank (20) is communicated with spraying gun (24) after connecting successively strainer (22) and sludge pump (23), and internal combustion turbine (28) smoke outlet is connected with air-distributing device (25).
4. according to the sludge anhydration burning generating integrated system described in claim 1-3 any one, it is characterized in that: described gas-solid separating device is deep bed filter (10), deep bed filter (10) waste gas outlet is connected with odor removal (19) through induced draft fan (9), and the outlet of deep bed filter (10) dewatered sludge is connected with hopper (12).
5. according to the sludge anhydration burning generating integrated system described in claim 4 any one, it is characterized in that: described odor removal (19) is UV photodissociation treating plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320674375.7U CN203653400U (en) | 2013-10-28 | 2013-10-28 | Sludge drying and incineration power generation integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320674375.7U CN203653400U (en) | 2013-10-28 | 2013-10-28 | Sludge drying and incineration power generation integrated system |
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| CN203653400U true CN203653400U (en) | 2014-06-18 |
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|---|---|---|---|
| CN201320674375.7U Expired - Fee Related CN203653400U (en) | 2013-10-28 | 2013-10-28 | Sludge drying and incineration power generation integrated system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276603A (en) * | 2015-10-20 | 2016-01-27 | 上海理工大学 | Coal-sludge co-combustion system based on high-temperature smoke drying and pneumatic conveying |
| CN105318337A (en) * | 2015-10-20 | 2016-02-10 | 上海理工大学 | Coal-sludge co-combustion system based on high-temperature smoke drying and circulating fluidized bed boiler |
| CN108034576A (en) * | 2017-12-29 | 2018-05-15 | 天津远新环保科技有限公司 | A kind of sludge power generation burning processing system |
| CN112212321A (en) * | 2019-07-11 | 2021-01-12 | 韩国能源技术研究院 | Pure oxygen circulating fluidized bed combustion device for reburning fly ash |
-
2013
- 2013-10-28 CN CN201320674375.7U patent/CN203653400U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276603A (en) * | 2015-10-20 | 2016-01-27 | 上海理工大学 | Coal-sludge co-combustion system based on high-temperature smoke drying and pneumatic conveying |
| CN105318337A (en) * | 2015-10-20 | 2016-02-10 | 上海理工大学 | Coal-sludge co-combustion system based on high-temperature smoke drying and circulating fluidized bed boiler |
| CN105276603B (en) * | 2015-10-20 | 2017-09-29 | 上海理工大学 | Coal sludge mixture burning control system based on high temperature flue gas drying and Geldart-D particle |
| CN108034576A (en) * | 2017-12-29 | 2018-05-15 | 天津远新环保科技有限公司 | A kind of sludge power generation burning processing system |
| CN112212321A (en) * | 2019-07-11 | 2021-01-12 | 韩国能源技术研究院 | Pure oxygen circulating fluidized bed combustion device for reburning fly ash |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20151028 |
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| EXPY | Termination of patent right or utility model |