CN206783513U - The thermal energy step reutilization system of sludge drying - Google Patents
The thermal energy step reutilization system of sludge drying Download PDFInfo
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- CN206783513U CN206783513U CN201720502264.6U CN201720502264U CN206783513U CN 206783513 U CN206783513 U CN 206783513U CN 201720502264 U CN201720502264 U CN 201720502264U CN 206783513 U CN206783513 U CN 206783513U
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- thin layer
- sludge
- reheater
- steam
- layer evaporator
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Abstract
A kind of thermal energy step reutilization system of sludge drying is the utility model is related to, the system includes thin layer evaporator, flash tank, reheater and band drier etc.；Dewatered sludge storage room is treated in the sludge input connection of the thin layer evaporator, and saturated vapor tank is connected with steam power plant, and saturated vapor tank connects thin layer evaporator and reheater by branched pipe respectively；One input port of the thin layer evaporator connection condenser, the sludge delivery outlet of thin layer evaporator are connected with shredding machine；The off-air outlet of the band drier is connected with aerial cooler, another input port of the output end connection condenser of the aerial cooler；The delivery outlet connection circulating fan of the condenser, the delivery outlet of circulating fan are connected with reheater, and the air of reheating is delivered to band drier by reheater；The thin layer evaporator and reheater are also connected with steam condensate (SC) tank.
Description
Technical field
It the utility model is related to mud and sewage processing equipment field, more particularly to sludge drying system.
Background technology
Sludge drying is the process for removing most of water content from sludge by the effect such as evaporation, is referred generally to using dirt
The spontaneous evaporation facilities such as mud drying bed (bed).Sludge drying is mainly carried out using steam in the market, its existing deficiency is：It is dry
High temperature and high pressure steam condensed water caused by change needs to be cooled down with substantial amounts of cooling water resources, on the one hand wastes HTHP
The heat of steam condensate (SC), on the other hand wastes cooling water resources, causes sludge drying operating cost high.
At present, there is two-stage sludge drying process, two-stage sludge drying process recycles the waste heat of steam power plant
Steam dewatered sludge.After superheated steam enters desiccation workshop, saturated vapor is become by attemperator and flows to desiccation line.Main desiccation
Equipment has I section of thin layer evaporator and II section of band drier, and the former is indirectly drying, and the latter is the direct desiccation of blowing hot-air.Sludge
For anhydration system in actual motion, steam consumption cost accounts for totle drilling cost more than 68%, and the reduction of steam consumption, which turns into, to be reduced always
The key factor of desiccation cost.Two-stage sludge drying process is in itself because of sludge water content caused by its I section thin layer evaporator desiccation
Evaporation used heat is used for II section desiccation hot-air pre-heatings, than the heat energy that common I sections drying process saves more than 30%.But in heat consumption
Aspect still suffers from the problem of waste：The saturated vapour pressure that I section desiccation uses is higher than 3barg, and normal pressure is water-cooled to by cooling
After be back to steam power plant, the energy that one side high pressure condensed water has fails effectively to recycle, and causes heat waste；On the other hand
High pressure condensed water needs a large amount of coolings to send steam power plant back to after being water-cooled to normal pressure.
Utility model content
In consideration of it, the thermal energy step that the utility model provides a kind of high sludge drying of energy reuse ratio recycles
System.
In order to solve the above problems, the utility model uses following scheme：
A kind of thermal energy step reutilization system of sludge drying, the system include thin layer evaporator, saturated vapor tank,
Shredding machine and band drier；The sludge input of the thin layer evaporator connects sewage sludge storage room to be drained off, saturated vapor tank
Vapor inlet port be connected with steam power plant, the steam outlet of saturated vapor tank connects thin layer evaporator respectively by branched pipe
Steam inlet and reheater；One input port of the exhaust steam outlet connection condenser of the thin layer evaporator, thin layer evaporator
Sludge delivery outlet and the sludge input port of shredding machine connect, shredding machine exports after sludge is shredded, and passes through and distribute band conveying
To band drier；The off-air outlet of the band drier is connected with aerial cooler, the output of the aerial cooler
Another input port of end connection condenser；The condenser delivery outlet connection circulating fan, the delivery outlet of circulating fan with again
Heater is connected, and the air of reheating is delivered to band drier by reheater；The thin layer evaporator and reheater
Also it is connected with steam condensate (SC) tank.
Further improvement as above-mentioned technical proposal：
The system also includes flash tank, and the input port of the flash tank is connected with thin layer evaporator, the output of flash tank
Mouth is connected with reheater.
It is of the present utility model to have technical effect that：
Two-stage sludge drying process of the present utility model is former to only have one-level energy cascade reutilization system, i.e. I sections thin layer
Evaporator 1 evaporates the preheating that used heat is used for II section hot blasts, when II section hot blasts need higher temperature, is supplemented by live steam.
The utility model increases second level energy cascade reutilization system, i.e., by flash tank that the high temperature in I section thin layer evaporators is high
Pressure steam condensate (SC) flashes to low temperature and low pressure steam, for the reheating of II section hot blasts, so as to reduce the benefit of live steam
Charge, realize the purpose for not only having saved steam but also having saved cooling water.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1st, thin layer evaporator；2nd, saturated vapor tank；3rd, shredding machine；4th, band drier；5th, sewage sludge storage to be drained off
Room；6th, steam power plant；7th, reheater；8th, condenser；9th, band is distributed；10th, aerial cooler；11st, circulating fan；12nd, steam is cold
Condensate tank；13rd, flash tank.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
As shown in figure 1, the thermal energy step reutilization system of the sludge drying of the present embodiment, the system is steamed including thin layer
Send out device 1, saturated vapor tank 2, shredding machine 3 and band drier 4；The sludge input of thin layer evaporator 1 connects sludge to be drained off
Storage room 5, the vapor inlet port of saturated vapor tank 2 are connected with steam power plant 6, and the steam outlet of saturated vapor tank 2 passes through branch
Pipe connects steam inlet and the reheater 7 of thin layer evaporator 1 respectively；The exhaust steam outlet connection condenser 8 of thin layer evaporator 1
An input port, the sludge delivery outlet of thin layer evaporator 1 is connected with the sludge input port of shredding machine 3, and shredding machine 3 shreds sludge
After export, and be delivered to band drier 4 by distributing band 9；The off-air outlet of band drier 4 connects with aerial cooler 10
Connect, another input port of the output end connection condenser 8 of aerial cooler 10；The delivery outlet connection circulating fan 11 of condenser 8,
The delivery outlet of circulating fan 11 is connected with reheater 7, and the air of reheating is delivered to band drier 4 by reheater 7；
Thin layer evaporator 1 and reheater 7 are also connected with steam condensate (SC) tank 12.
As shown in figure 1, desiccation reutilization system of the present utility model, in addition to flash tank 13, the input port of flash tank 13
It is connected with thin layer evaporator 1, delivery outlet connection reheater 7.
Under original one-level energy cascade reutilization system, the used heat of thin layer evaporator 1 preheating II section band machine hot blasts, it can incite somebody to action
Temperature by 47 DEG C or so improve to 85 DEG C or so, improve 38 DEG C or so, the temperature only can in the case of inputiing mud volume 3500kg/h,
Ensure that dewatered sludge solid content in 70-80%, need to such as increase mud amount, then need to increase extra live steam consumption, steam mono-consumption
In 0.65t/t wet muds or so；Gradient utilization system, thin layer steam the two-stage flash vapour energy increased newly by the utility model again
High temperature and high pressure steam condensed water caused by hair device 1 flashes to low temperature and low pressure steam by flash tank 13, for II sections hot blast again
Heat (reheater 7), hot blast temperature can be improved to 95 DEG C or so by 85 DEG C, improve 10 DEG C, the temperature can be in inputiing mud volume
In the case of 4400kg/h, ensure dewatered sludge solid content in 70-80%, live steam unit consumption in 0.62t/t wet muds or so, than
Common two-part drying process saves steam consumption 4.6%, for cooling down the cooling water consumption of thin layer steam condensate (SC)
Reduce 7.9%；Therefore the energy reutilization system of two-stage sludge drying process of the present utility model is than common two-stage sludge
Drying process saves steam 4.6%, water saving 7.9%.
Two-stage sludge drying process of the present utility model is former to only have one-level cascaded utilization of energy system, i.e. I sections thin layer steams
Send out device 1 and evaporate the preheating that used heat is used for II section hot blasts, when II section hot blasts need higher temperature, supplemented by live steam.This
Utility model increases second level energy cascade reutilization system, i.e., by flash tank 13 that the high temperature in I sections thin layer evaporator 1 is high
Pressure steam condensate (SC) flashes to low temperature and low pressure steam, for the reheating of II section hot blasts, so as to reduce the benefit of live steam
Charge.
For the utility model in view of the characteristics of two-part drying process itself, I sections sludge evaporates used heat to II section desiccation hot blasts
Being preheated, this partial heat accounts for II sections total heat consumption more than 70%, and only need to be supplemented 30% heat can reach desiccation effect,
Therefore the desiccation of II sections requires not high to steam quality, the vapor (steam) temperature of actual motion is between 100~110 DEG C, and I sections are 135
Between~150 DEG C.The steam pressure difference of two-stage drying equipment provides natural endowment for the cascade utilization again of heat.Flash steam produces
During the vapo(u)rous temperature being born in when high pressure coolant-temperature gage is higher than low pressure, temperature difference is higher, and caused flash-off steam amount is more.Flash distillation
Steam as the property of general industry steam, can apply with industrial production.
Embodiment provided above is better embodiment of the present utility model, is only used for convenient explanation the utility model, and
It is non-to make any formal limitation, any those of ordinary skill in the art to the utility model, if not departing from
In the range of the utility model carries technical characteristic, locally change or repair using made by the utility model disclosed technology content
The equivalent embodiment of decorations, and without departing from the technical characteristics of the utility model content, still fall within the utility model technical characteristic
In the range of.
Claims (2)
- A kind of 1. thermal energy step reutilization system of sludge drying, it is characterised in that：The system includes thin layer evaporator (1), saturated vapor tank (2), shredding machine (3) and band drier (4)；The sludge input connection of the thin layer evaporator (1) Sewage sludge storage room (5) to be drained off, the vapor inlet port of saturated vapor tank (2) are connected with steam power plant (6), saturated vapor tank (2) Steam outlet connects steam inlet and the reheater (7) of thin layer evaporator (1) by branched pipe respectively；The thin film evaporation One input port of the exhaust steam outlet connection condenser (8) of device (1), sludge delivery outlet and the shredding machine (3) of thin layer evaporator (1) The connection of sludge input port, shredding machine (3) exports after sludge is shredded, and is delivered to band drier by distributing band (9) (4)；The band drier (4) off-air outlet be connected with aerial cooler (10), the aerial cooler (10) it is defeated Go out another input port of end connection condenser (8)；The delivery outlet connection circulating fan (11) of the condenser (8), circulating fan (11) delivery outlet is connected with reheater (7), and the air of reheating is delivered to band drier (4) by reheater (7)； Steam condensate (SC) caused by the thin layer evaporator (1) and reheater (7) is also connected with steam condensate (SC) tank (12).
- 2. the thermal energy step reutilization system of sludge drying according to claim 1, it is characterised in that：The system Also include flash tank (13), the input port of the flash tank (13) is connected with the steam condensate (SC) of thin layer evaporator (1), flash tank Steam outlet connection reheater (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720502264.6U CN206783513U (en) | 2017-05-08 | 2017-05-08 | The thermal energy step reutilization system of sludge drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720502264.6U CN206783513U (en) | 2017-05-08 | 2017-05-08 | The thermal energy step reutilization system of sludge drying |
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| Publication Number | Publication Date |
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| CN206783513U true CN206783513U (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720502264.6U Expired - Fee Related CN206783513U (en) | 2017-05-08 | 2017-05-08 | The thermal energy step reutilization system of sludge drying |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107098562A (en) * | 2017-05-08 | 2017-08-29 | 苏州工业园区中法环境技术有限公司 | The thermal energy step reutilization system of two-stage sludge drying process |
-
2017
- 2017-05-08 CN CN201720502264.6U patent/CN206783513U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107098562A (en) * | 2017-05-08 | 2017-08-29 | 苏州工业园区中法环境技术有限公司 | The thermal energy step reutilization system of two-stage sludge drying process |
| CN107098562B (en) * | 2017-05-08 | 2023-12-12 | 苏州工业园区中法环境技术有限公司 | Novel heat energy cascade recycling system of two-stage sludge drying process |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |