CN209383636U - Power plant's coupled system of sludge drying is carried out using flyash - Google Patents
Power plant's coupled system of sludge drying is carried out using flyash Download PDFInfo
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- CN209383636U CN209383636U CN201822203140.5U CN201822203140U CN209383636U CN 209383636 U CN209383636 U CN 209383636U CN 201822203140 U CN201822203140 U CN 201822203140U CN 209383636 U CN209383636 U CN 209383636U
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Abstract
The utility model discloses power plant's coupled systems that sludge drying is carried out using flyash, including feeding pipeline, Shaftless screw conveyor, crushing plant, mixing apparatus, storage silo, boiler, coal conveyer belts, exhaust gas processing device, conveyer and flyash equipment；The starting point of feeding pipeline is connected to raw sewage pond, and feeding pipeline is connected to by Shaftless screw conveyor with the feeding inlet of crushing plant, and the discharge port of crushing plant is connected to the feeding inlet of mixing apparatus；The discharge port of mixing apparatus is connected to the feeding inlet of storage silo, and the discharge port of storage silo is connected to by coal conveyer belts with the feeding inlet of boiler；Exhaust outlet at the top of boiler is connected to by pipeline with exhaust gas processing device；The slag-drip opening of boiler bottom is connected to conveyer.Drying and other treatment, simple original desiccation process, coupling resource power generation cleverly are carried out to raw sewage using the burning waste flyash of power plant.Overcome the high technical problem of complex process, the dehydration cost of prior art sludge dewatering.
Description
Technical field
The utility model relates to coupled electricity-generation technical fields, couple in particular with the power plant that flyash carries out sludge drying
System.
Background technique
With the rapid development of our country's economy, municipal sewage treatment amount and sludge yield rapid development end 2015, according to
Data China, official the planned city sewage sludge harmlessness disposing rate be lower than 53%, be far from reaching 80% planning requirement.About 30% dirt
Mud takes interim disposition, and 17% or so disappears without a trace.
2017, national urban wastewater treatment and regeneration Facilities Construction planning in specify sewage sludge harmlessness to be increased
Disposition dynamics, it is desirable that sewage sludge harmlessness disposing scale is increased to 22,000,000 tons/year, facility investment about 29,400,000,000.But current China
The situation is tense for sewage sludge harmlessness disposing, and traditional sludge disposal technology existing defects, sewage sludge harmlessness disposal of resources gets into a difficult position.
Anaerobic digestion techniques there are the problem of have: first, device capbility be much larger than sludge yield；Second, aerobic compost skill
The fertilizer product that art obtains is of poor quality, and market is narrow；Third, Landfill are only interim disposal options, and there are secondary pollutions
Problem, national explicit order limitation；4th, the construction cost and operation cost of independent anhydration and incineration technology are too high, operation cost 350-
600 yuan/t；5th, collaboration cement kiln incineration technology is that cost is relatively low for one kind, the technology of high treating effect.Because cooperateing with simultaneously
Dangerous waste is disposed, digestion capability deficiency situation is faced.
To improve sludge dewatering efficiency, part industry is dehydrated using furnace drying method, but low temperature during material drying,
Part gas with foreign flavor is generated during medium temperature, high temperature dehydration, makes another problem in atmosphere pollution, and dehydration is caused to throw
Money is high, cost is high.
The sludge and fly ash in electric power plant of sewage treatment plant belong to solid waste at this stage, such as fill or abandon greatly
Ground welding, the prior art are also unsatisfactory to its processing.
Utility model content
The purpose of the utility model is to provide power plant's coupled systems that sludge drying is carried out using flyash, to solve sewage
The flyash that the dewatering technology of mud for the treatment of plant is complicated, dehydration cost is high, power plant generates can not secondary use the technical issues of.
To achieve the above objectives, the present invention adopts the following technical solutions: the utility model provide using flyash into
Power plant's coupled system of row sludge drying, including feeding pipeline, Shaftless screw conveyor, crushing plant, mixing apparatus, storage
Storehouse, boiler, coal conveyer belts, exhaust gas processing device, conveyer and flyash equipment；
The starting point of feeding pipeline is connected to raw sewage pond, and feeding pipeline passes through Shaftless screw conveyor and crushing plant
Feeding inlet connection, the discharge port of crushing plant are connected to the feeding inlet of mixing apparatus；The discharge port of mixing apparatus and storage silo
The discharge port of feeding inlet connection, storage silo is connected to by coal conveyer belts with the feeding inlet of boiler；
Exhaust outlet at the top of boiler is connected to by pipeline with exhaust gas processing device；The slag-drip opening and conveyer of boiler bottom connect
Logical, when working condition, the flyash after boiler combustion is sent into mixing apparatus by conveyer.
It further, further include steam turbine and generator.The chemical energy for blending post fuel is converted working media (one by boiler
As be water) it is interior can, interior in steam that boiler generates can be converted to mechanical energy by steam turbine, and pass through coaxially connected power generation
Machine converts mechanical energy into electric energy, to achieve the purpose that convert electric energy for the chemical energy of fuel combination.
Further, the moisture percentage in sewage sludge 60% in raw sewage pond.
Further, the mixing water content of matter of sludge and flyash is 40% in storage silo.
Further, the mixed-fuel burning proportion of the sludge in boiler and flyash is 15%-50%.
Further, auger component is provided in mixing apparatus.It is provided at the top of mixing apparatus for adding flyash
Feed inlet.
Further, the dump skip for adding flyash is provided at the top of crushing plant.
Further, it stores and is provided on bin discharge port external for the material in mixing apparatus to be transmitted on coal conveyer belts
Screw(-type) feeder or bucket elevator.
Further, insulating layer is provided on storage silo outer wall.
The beneficial effects of the utility model are embodied in:
1, power plant's coupled system provided by the utility model that sludge drying is carried out using flyash, coupled system setting section
It learns rationally, raw material uses sludge and fly ash in electric power plant both solid waste of sewage treatment plant at this stage, realizes
Power plant's solid waste product self-loopa, low raw-material cost.
2, method provided by the utility model can play the role of turning waste into wealth, and cleverly use the burning waste of power plant
Flyash carries out drying and other treatment, simple original desiccation process, coupling resource power generation to raw sewage.Overcome prior art sludge
The technical problem that dehydrating process is complicated, dehydration cost is high.
3, method provided by the utility model provides new resolving ideas for sludge and flyash both fixed-end forces,
It provides coal ash secondary to improve the occasion, the dewatered sludge after physical mixed is directly mixed into Coal Transportation System subsequently into boiler
Burning makes full use of the calorific value of dewatered sludge to substitute a part coal-fired.The production cost for greatly reducing enterprise, reduces simultaneously
Industrial production pollutes environment bring.Achieve the purpose that sewage sludge harmlessness minimizing is disposed.
Other features and advantages of the utility model will illustrate in the following description, and partly from specification
It becomes apparent, or is understood and implementing the utility model.The main purpose and further advantage of the utility model can lead to
Specifically noted scheme in specification, claims is crossed to be achieved and obtained.
Detailed description of the invention
The utility model is described in more detail with reference to the accompanying drawing.
Fig. 1 is the flow diagram of the utility model embodiment one.
Fig. 2 is the structural schematic diagram of the utility model embodiment two.
Appended drawing reference: 1- raw sewage pond, 2- crushing plant, 3- mixing apparatus, 4- storage silo, 5- boiler, 6- vent gas treatment
Device, 7- dump skip, 8- bucket elevator, 9- coal conveyer belts.
Specific embodiment
The technical solution of the utility model is described in detail by the following examples, embodiment below is only exemplary
, it is only capable of for explanation and illustration the technical solution of the utility model, and cannot be construed to technical solutions of the utility model
Limitation.
Embodiment 1, as shown in Figure 1, the utility model provides power plant's coupled system that sludge drying is carried out using flyash,
Including feeding pipeline, Shaftless screw conveyor, crushing plant 2, mixing apparatus 3, storage silo 4, boiler 5, coal conveyer belts 9, tail
Flash Gas Compression Skid System 6, conveyer and flyash equipment.The starting point of feeding pipeline is connected to raw sewage pond 1, and feeding pipeline passes through nothing
Screw conveyor shaft is connected to the feeding inlet of crushing plant 2, and the discharge port of crushing plant 2 is connected to the feeding inlet of mixing apparatus 3；
The discharge port of mixing apparatus 3 is connected to the feeding inlet of storage silo 4, and the discharge port of storage silo 4 passes through coal conveyer belts 9 and boiler 5
Feeding inlet connection, be provided with insulating layer on 4 outer wall of storage silo.Be provided at the top of mixing apparatus 3 for add flyash into
Material mouth；Screw mixer is provided in mixing apparatus 3.It is provided on 4 discharge port of storage silo for by the material in mixing apparatus 3
It is transmitted to coal conveyer belts 9.
The exhaust outlet at 5 top of boiler is connected to by pipeline with exhaust gas processing device 6；The slag-drip opening of 5 bottom of boiler and conveying
Machine connection, when working condition, conveyer will boiler 5 burn after flyash be sent into mixing apparatus 3.
Above-mentioned power plant's coupled system can also include steam turbine and generator.Boiler 5 turns the chemical energy for blending post fuel
Turn to working media (generally water) it is interior can, interior in steam that boiler 5 generates can be converted to mechanical energy by steam turbine, and be led to
It crosses coaxially connected generator and converts mechanical energy into electric energy, to reach the mesh for converting the chemical energy of fuel combination to electric energy
's.
Wherein, the moisture percentage in sewage sludge 60% in raw sewage pond 1.The mixing water content of matter of sludge and flyash is in storage silo 4
40%.The mixed-fuel burning proportion of sludge and flyash in boiler 5 is 15%-50%.
The coupling process of above-mentioned power plant's coupled system that sludge drying is carried out using flyash, the specific steps are as follows:
The raw sewage of moisture content 60% is sent into crushing plant 2 by step 1 by feeding pipeline；
Step 2 carries out broken raw sewage and is delivered to mixing apparatus 3；Added by the top feed mouth of mixing apparatus 3
Enter 10%-15% flyash, stirred evenly the mixture of sludge and flyash using the blender in mixing apparatus 3, test is mixed
Close object water content；
Step 3 when the water content of mixture is 40-50%, stops addition flyash, obtains mixing sludge；
Dewatered sludge in mixing apparatus 3 is delivered to storage silo 4 by step 4；Defeated coal skin is delivered to by screw(-type) feeder
Band machine 9；
Step 5, the dewatered sludge after blending are sent to 5 hearth combustion of boiler；
The flyash of step 6,5 burner hearth afterburnt of boiler is sent into mixing apparatus 3 by conveyer；5 hearth combustion of boiler
Flue gas afterwards passes through the exhaust outlet being arranged at the top of boiler 5 and enters exhaust gas processing device 6；
Step 7, gas is discharged after up to standard by denitration, desulfurization, dust removal process after burning.
Wherein, the ratio of the mixture of sludge and flyash selects in step 2.In order to investigate 60% or so water-containing sludge with
Flyash slightly mixes effect, and sludge physical behavior changes after observation mixing.It uses 15kg sludge for benchmark sample, investigates respectively mixed
Close the physical behavior variation after 2.25kg, 4.5kg, 7.5kg flyash (particulate).
The equipment and equipment used in experiment are as follows: sludge 500kg, flyash 250kg, 2, metal bucket, woven bag 10, electricity
Sub- scale 1 (range 100Kg), 1, spade, pick up 1, trolley 1.Sludge freight: 800 yuan；Master Cost: 400
Member；Labour cost: 200 yuan.The specific method is as follows:
1. being installed with woven bag spare after weighing 2.25kg, 4.5kg, 7.5kg flyash (particulate) with metal bucket.
2. weighing 4 parts of 15kg sludge respectively with metal bucket again, shady place ground is shelved as authentic specimen.It can be spread
It is flat to shelve ground, it is made into pie.
3. repeating step 1-2, flyash is taken out and is sufficiently mixed with sludge, after 30min, records moisture percentage in sewage sludge
Transitivity variation.
4. repeating step 1-2, flyash is taken out and is sufficiently mixed with sludge, after 60min, records moisture percentage in sewage sludge
Transitivity variation.
5. repeating step 1-2, flyash is taken out and is sufficiently mixed with sludge, after 90min, records moisture percentage in sewage sludge
Transitivity variation.
(4) measurement of water-content coefficient summarizes after testing
The measurement of water-content coefficient of 1 mixture of table
Embodiment 2 carries out power plant's coupled system of sludge drying using flyash, with embodiment 1, the difference is that,
The dump skip 7 for adding flyash is provided at the top of crushing plant 2.7 top of dump skip is provided with bridge-type grab machine.Storage silo
The bucket elevator 8 for being transmitted to the material in mixing apparatus 3 on coal conveyer belts is provided on 4 discharge ports.Referring to fig. 2
It is shown.
To sum up, power plant's coupled system provided by the utility model that sludge drying is carried out using flyash, it is not only sufficiently sharp
Carry out sludge incineration vent gas treatment with sludge ash heat, while using existing environmental protection facility, reduce the investment of sludge heat drying at
This.System provided by the utility model realizes power plant's solid waste product self-loopa, reach sludge treatment recycling, it is innoxious, subtract
Quantization, stabilized target.
The foregoing is merely the preferable specific embodiment of the utility model, but the protection scope of the utility model not office
Be limited to this, variation that anyone skilled in the art is expected within the technical scope disclosed by the utility model or
Replacement, should be covered within the scope of the utility model.
Claims (8)
1. carrying out power plant's coupled system of sludge drying using flyash, it is characterised in that: defeated including feeding pipeline, shaftless screw
Send machine, crushing plant (2), mixing apparatus (3), storage silo (4), boiler (5), coal conveyer belts (9), exhaust gas processing device (6)
With flyash equipment；
The starting point of feeding pipeline is connected to raw sewage pond (1), and feeding pipeline passes through Shaftless screw conveyor and crushing plant (2)
Feeding inlet connection, the discharge port of crushing plant (2) is connected to the feeding inlet of mixing apparatus (3)；The discharge port of mixing apparatus (3)
It is connected to the feeding inlet of storage silo (4), the discharge port of storage silo (4) is connected by the feeding inlet of coal conveyer belts (9) and boiler (5)
It is logical；
Exhaust outlet at the top of boiler (5) is connected to by pipeline with exhaust gas processing device (6)；The slag-drip opening of boiler (5) bottom with it is defeated
Machine is sent to be connected to, when working condition, the flyash after boiler (5) burning is sent into mixing apparatus (3) by conveyer.
2. the power plant's coupled system as described in claim 1 for carrying out sludge drying using flyash, which is characterized in that further include
Steam turbine and generator.
3. the power plant's coupled system as described in claim 1 for carrying out sludge drying using flyash, which is characterized in that raw sewage
Moisture percentage in sewage sludge 60% in pond (1).
4. the power plant's coupled system as described in claim 1 for carrying out sludge drying using flyash, which is characterized in that storage silo
(4) the mixing water content of matter of interior sludge and flyash is 40%.
5. the power plant's coupled system as described in claim 1 for carrying out sludge drying using flyash, which is characterized in that broken to set
The dump skip (7) for adding flyash is provided at the top of standby (2).
6. the power plant's coupled system as described in claim 1 for carrying out sludge drying using flyash, which is characterized in that mixing is set
Auger component is provided in standby (3).
7. the power plant's coupled system as described in claim 1 for carrying out sludge drying using flyash, which is characterized in that mixing is set
Screw(-type) feeder or bucket elevator (8) are provided between standby (3) and storage silo (4).
8. the power plant's coupled system as described in claim 1 for carrying out sludge drying using flyash, which is characterized in that storage silo
(4) insulating layer is provided on outer wall.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822203140.5U CN209383636U (en) | 2018-12-26 | 2018-12-26 | Power plant's coupled system of sludge drying is carried out using flyash |
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| CN201822203140.5U CN209383636U (en) | 2018-12-26 | 2018-12-26 | Power plant's coupled system of sludge drying is carried out using flyash |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437500A (en) * | 2018-12-26 | 2019-03-08 | 北京国电龙源环保工程有限公司 | The power plant's coupled system and coupling process of sludge drying are carried out using flyash |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437500A (en) * | 2018-12-26 | 2019-03-08 | 北京国电龙源环保工程有限公司 | The power plant's coupled system and coupling process of sludge drying are carried out using flyash |
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Address after: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee after: Guoneng Longyuan environmental protection Co.,Ltd. Address before: 100039 room 911, 1 building, 16 West Fourth Ring Road, Haidian District, Beijing. Patentee before: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENGINEERING Co.,Ltd. |