CN107487979A - A kind of backheat method sludge heat drying system - Google Patents
A kind of backheat method sludge heat drying system Download PDFInfo
- Publication number
- CN107487979A CN107487979A CN201710848153.5A CN201710848153A CN107487979A CN 107487979 A CN107487979 A CN 107487979A CN 201710848153 A CN201710848153 A CN 201710848153A CN 107487979 A CN107487979 A CN 107487979A
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- China
- Prior art keywords
- sludge
- high temperature
- heat exchanger
- desiccation machine
- condensible gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010802 sludge Substances 0.000 title claims abstract description 91
- 238000001035 drying Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000007789 gas Substances 0.000 claims abstract description 40
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 27
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 19
- 239000002918 waste heat Substances 0.000 claims abstract description 14
- 238000001704 evaporation Methods 0.000 claims abstract description 11
- 230000008020 evaporation Effects 0.000 claims abstract description 11
- 239000002351 wastewater Substances 0.000 claims description 19
- 239000000498 cooling water Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 230000008676 import Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001925 catabolic effect Effects 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
A kind of backheat method sludge heat drying system proposed by the present invention,Mainly include sludge pump,Sludge inlet pipeline,Surface-type desiccation machine,High temperature saturated vapor pipeline,Condensed water in high temperature pipe,Hydrophobic development unit,Sludge outlet pipeline,Desiccation machine evaporation tail vapour discharge manifold road,On-condensible gas discharge pipe and on-condensible gas blower fan,On-condensible gas blower fan is arranged on on-condensible gas discharge pipe,High temperature saturated vapor from high temperature saturated vapor pipeline heats to surface-type desiccation machine,Wet mud enters surface-type desiccation machine from sludge inlet pipeline,Discharged after heat-treated in desiccation state and then from sludge outlet pipeline,Surface heat exchanger is also set up on sludge inlet pipeline,The waste-heat import sludge of high temperature cold junction water when reclaiming sludge drying using surface heat exchanger,Improve desiccation machine sludge inlet temperature,So as to reduce the loss of desiccation machine thermal source,Realize energy-conservation.
Description
Technical field
The present invention relates to sludge heat drying equipment, more particularly to a kind of backheat method sludge heat drying system.
Background technology
At present, dewatered sludge moisture content in municipal sewage plant's is typically 80% or so, and it is neither preferable viscosity stream
Body, nor Newtonian fluid, is in " not settle like the dense cream of homogeneous when pressure piping conveys at normal temperatures and pressures without mobility
Body ".
《Consumer waste filling and embedding pollutant catabolic gene standard》It is required that：Sewage treatment plants sludge moisture content after processing is less than
60% can enter household refuse landfill sites landfill stabilization.Therefore, most of municipal sludges need deep dehydration or drying and other treatment,
Sludge safely, quickly, is efficiently delivered to processing (or disposal) place using pipe-line transportation system, is essential ring
Section.But due to sludge poor fluidity, friction loss is larger, it is necessary to overcome resistance to be conveyed by sludge pump high pressure.
With the raising of outlet pressure, sludge pump cost is also very high, therefore induction system high energy consumption, and input is high.
Sludge Surface formula desiccation machine because its is safe and environment-friendly, treating capacity is big, take up an area less, drying efficiency is high the features such as, be domestic
Sludge drying handles capital equipment.In addition, the rheological behavior through scientific research sludge is found：The raising of sludge temperature can be reduced
Its viscosity.
Present circumstances is that existing Sludge Surface formula anhydration system synthesis heating power is also improved part using efficiency, such as right
Waste heat and used heat do not utilize sufficiently, cause serious waste.
The content of the invention
In order to solve prior art problem, the present invention proposes a kind of backheat method sludge heat drying system, in desiccation machine sludge
Surface-type exchanger is set on inlet manifold road, using desiccation machine waste heat and waste heat import sludge, makes full use of waste heat to carry
High desiccation machine sludge inlet temperature, so as to reduce desiccation machine thermal source energy consumption, realization saves to greatest extent, simultaneously as sludge temperature
Raising can reduce flow resistance in sludge course of conveying, reduce needed for dewatered sludge institute's calorific requirement and conveying sludge
Power.
It is a kind of backheat method sludge heat drying system, mainly including sludge that the present invention, which solves technical problem and provides scheme,
Pump, sludge inlet pipeline, surface-type desiccation machine, high temperature saturated vapor pipeline, condensed water in high temperature pipe, hydrophobic development unit, sludge go out
Mouth pipeline, desiccation machine evaporation tail vapour discharge manifold road, on-condensible gas discharge pipe and on-condensible gas blower fan, on-condensible gas blower fan are set
Put on on-condensible gas discharge pipe, the high temperature saturated vapor from the high temperature saturated vapor pipeline enters to surface-type desiccation machine
Row heating, wet mud from the sludge inlet pipeline enter the surface-type desiccation machine, it is heat-treated after in desiccation state it is right
Discharged afterwards from the sludge outlet pipeline, it is characterized in that, also set up surface heat exchanger on the sludge inlet pipeline.
The preferred scheme of the present invention, in addition to direct drainer, cooling water pipe, low-temperature wastewater pipe, in surface-type heat
Cold junction water pipe is also set up between exchanger and the hydrophobic development unit, the directly drainer is arranged on the surface-type desiccation machine
Evaporate on tail vapour discharge manifold road, tail vapour caused by sludge drying evaporates tail vapour discharge manifold road through the desiccation machine and enters institute
State direct drainer to be cooled down, caused low-temperature wastewater is discharged by the low-temperature wastewater pipe, and on-condensible gas is through on-condensible gas
Discharge pipe is drawn by the on-condensible gas blower fan, and the high temperature saturated vapor from high temperature saturated vapor pipeline is through the surface-type
Condensed water in high temperature caused by after desiccation machine is linked into the surface heat exchanger through the condensed water in high temperature pipe, through surface-type
Cold junction water after heat exchanger accesses to hydrophobic development unit through the cold junction water pipe.
The preferred scheme of the present invention, on-condensible gas blower fan, the desiccation machine evaporation are also set up on surface heat exchanger
Tail vapour vapour discharge manifold road accesses to the surface heat exchanger, and the waste heat of tail vapour is carried out by the surface heat exchanger
Recovery, high temperature saturated vapor access to hydrophobic development unit, tail vapour through caused condensed water in high temperature after the surface-type desiccation machine
Drawn through caused on-condensible gas after surface heat exchanger by the on-condensible gas blower fan.
The preferred scheme of the present invention, also sets up cold junction water between the surface heat exchanger and the hydrophobic development unit
Pipe, primary surface formula heat exchanger is also set up in the front end of surface heat exchanger, primary surface formula heat exchanger also sets up low
Warm waste pipe, on-condensible gas blower fan is also set up on primary surface heat exchanger, high temperature saturated vapor is through the surface-type desiccation
Condensed water in high temperature caused by after machine is linked into the surface heat exchanger, through the cold junction after the surface heat exchanger
Water accesses to hydrophobic development unit；The desiccation machine evaporation tail vapour discharge manifold road accesses to the primary surface formula heat exchanger,
Low-temperature wastewater of the tail vapour after primary surface formula heat exchanger discharged by the low-temperature wastewater pipe and on-condensible gas by it is described not
Solidifying Air fan is drawn.
Beneficial effects of the present invention：The present invention proposes a kind of backheat method sludge heat drying system, in desiccation machine sludge inlet
Surface-type exchanger is set on main pipe rail, using desiccation machine thermal source waste heat import sludge, makes full use of waste heat to improve desiccation
Machine sludge inlet temperature, so as to reduce desiccation machine thermal source energy consumption, realization saves to greatest extent, simultaneously as the raising of sludge temperature
The flow resistance in sludge course of conveying can be reduced, reduces power needed for dewatered sludge institute's calorific requirement and conveying sludge.
Brief description of the drawings
Fig. 1 is the structure arrangement schematic diagram of prior art one embodiment.
Fig. 2 is the structure arrangement schematic diagram of first embodiment of the invention.
Fig. 3 is the structure arrangement schematic diagram of second embodiment of the invention.
Fig. 4 is the structure arrangement schematic diagram of third embodiment of the invention.
In figure：
1. sludge pump,
2. surface-type desiccation machine,
2.11 sludge inlet pipelines, 2.12 sludge outlet pipelines,
2.21 high temperature saturated vapor pipelines, 2.22 condensed water in high temperature pipelines, 2.23 condensates；
3. direct drainer,
3.11 desiccation machines evaporation tail vapour discharge manifold road, 3.12 on-condensible gas discharge pipes,
3.21 cooling water pipes, 3.22 low-temperature wastewater pipes,
4 on-condensible gas blower fans,
5 hydrophobic development units,
6 surface heat exchangers,
6.1 primary surface formula heat exchangers.
Fig. 1 is the structure arrangement schematic diagram of prior art one embodiment.Shown in figure, in the prior art, a kind of backheat
Method sludge heat drying system, mainly include sludge pump 1, sludge inlet pipeline 2.11, surface-type desiccation machine 2, high temperature saturated vapor
Pipeline 2.21, condensed water in high temperature pipe 2.22, hydrophobic development unit 5, sludge outlet pipeline 2.12, desiccation machine evaporation tail vapour discharge manifold
Road 3.11, on-condensible gas discharge pipe 3.12, the high temperature saturated vapor from high temperature saturated vapor pipeline 2.21 are done to surface-type
Change machine 2 is heated, wet mud from sludge inlet pipeline 2.11 enter surface-type desiccation machine 2, it is heat-treated after be in desiccation shape
State is discharged from sludge outlet pipeline 2.22.Shown in figure, in the prior art, in addition to direct drainer 3, cooling water pipe 3.21,
Low-temperature wastewater pipe 3.22, direct drainer 3 are arranged on surface-type desiccation machine 2 and evaporated on tail vapour discharge manifold road 3.11, and sludge is done
Tail vapour caused by change evaporates tail vapour discharge manifold road 3.11 through desiccation machine and cooled down into direct drainer 3, caused by it
Low-temperature wastewater is discharged by low-temperature wastewater pipe 3.22, and on-condensible gas through on-condensible gas discharge pipe 3.12 by on-condensible gas blower fan 4
Draw.High temperature saturated vapor from high temperature saturated vapor pipeline 2.21 condenses through caused high temperature after surface-type desiccation machine 2
Water is accessed in hydrophobic development unit 5 through condensed water in high temperature pipe 2.22.
Fig. 2 is the structure arrangement schematic diagram of first embodiment of the invention, is shown in figure, unlike the prior art,
In this example, surface heat exchanger 6 is also set up on sludge inlet pipeline 2.11, in surface heat exchanger 6 and dewatering capacity-enlarging
Cold junction water pipe 2.23 is also set up between device 5；High temperature saturated vapor from high temperature saturated vapor pipeline 2.21 is through surface-type desiccation
Condensed water in high temperature caused by after machine 2 is linked into surface heat exchanger 6 through condensed water in high temperature pipe 2.22, through surface-type heat exchange
Cold junction water after device 6 is accessed in hydrophobic development unit 5 through cold junction water pipe 2.23.
In this example, the sludge of sludge inlet pipeline 2.11 is heated using the waste heat of condensed water in high temperature 2.23.
Fig. 3 is the structure arrangement schematic diagram of second embodiment of the invention.Shown in figure, unlike the prior art,
In this example, direct drainer is not provided with.
And surface heat exchanger 6 is also set up on sludge inlet pipeline 2.11, from high temperature saturated vapor pipeline 2.21
High temperature saturated vapor be linked into through condensed water in high temperature caused by after surface-type desiccation machine 2 through condensed water in high temperature pipe 2.22 it is hydrophobic
In flash vessel 5；Tail vapour caused by sludge drying evaporates tail vapour discharge manifold road 3.11 through desiccation machine and is linked into surface-type heat friendship
Parallel operation 6, its caused low-temperature wastewater are discharged by low-temperature wastewater pipe 3.22, and on-condensible gas through on-condensible gas discharge pipe 3.12 by
On-condensible gas blower fan 4 is drawn.
In this example, the sludge of sludge inlet pipeline 2.11 is heated using tail vapour waste heat caused by sludge drying.
Fig. 4 is the structure arrangement schematic diagram of third embodiment of the invention.Shown in figure, unlike the prior art,
In this example, direct drainer is not provided with.
Surface heat exchanger 6 is also set up on sludge inlet pipeline 2.11 and is set before surface heat exchanger 6
Primary surface formula heat exchanger 6.1.
On the one hand, cold junction water pipe 2.23 is also set up between surface heat exchanger 6 and hydrophobic development unit 5；From high temperature
The high temperature saturated vapor of saturated vapor pipeline 2.21 is through caused condensed water in high temperature after surface-type desiccation machine 2 through condensed water in high temperature
Pipe 2.22 is linked into surface heat exchanger 6, and the cold junction water after surface heat exchanger 6 accesses to through cold junction water pipe 2.23
In hydrophobic development unit 5.
On the other hand, low-temperature wastewater pipe 3.22 is also set up on primary surface formula heat exchanger 6.1.Produced during sludge drying
Tail vapour evaporate tail vapour discharge manifold road 3.11 through desiccation machine and be linked into primary surface formula heat exchanger 6.1, its caused low temperature
Waste water is discharged by low-temperature wastewater pipe 3.22, and on-condensible gas is drawn through on-condensible gas discharge pipe 3.12 by on-condensible gas blower fan 4.
In this example, both the sludge of sludge inlet pipeline 2.11 was heated using the waste heat of condensed water in high temperature 2.23, together
When again the sludge of sludge inlet pipeline 2.11 is heated using tail vapour waste heat caused by sludge drying.
Above-mentioned various embodiments proposed by the present invention, by different UTILIZATION OF VESIDUAL HEAT IN modes, can make full use of surface-type
Desiccation machine carries out waste heat caused by desiccation to sludge and improves desiccation machine sludge inlet temperature, so as to reduce desiccation machine thermal source energy consumption
Realization saves to greatest extent.Simultaneously as the raising and can of sludge inlet temperature enough reduces the flowing resistance in sludge course of conveying
Power.So as to reduce power needed for dewatered sludge institute's calorific requirement and conveying sludge, performance energy-saving consumption-reducing effect to greatest extent.
Claims (4)
- A kind of 1. backheat method sludge heat drying system, mainly including sludge pump, sludge inlet pipeline, surface-type desiccation machine, high temperature Saturated vapor pipeline, condensed water in high temperature pipe, hydrophobic development unit, sludge outlet pipeline, desiccation machine evaporation tail vapour discharge manifold road, no Solidifying gas exhaustion line and on-condensible gas blower fan, on-condensible gas blower fan are arranged on on-condensible gas discharge pipe, from the height Have enough to eat and wear and surface-type desiccation machine is heated with the high temperature saturated vapor of steam pipework, wet mud is entered from the sludge inlet pipeline Enter the surface-type desiccation machine, be heat-treated afterwards in desiccation state and then from sludge outlet pipeline discharge, it is characterized in that, Surface heat exchanger is also set up on the sludge inlet pipeline.
- 2. a kind of backheat method sludge heat drying system according to claim 1, it is characterized in that, in addition to direct drainer, Cooling water pipe, low-temperature wastewater pipe, cold junction water pipe, institute are also set up between the surface heat exchanger and the hydrophobic development unit State direct drainer to be arranged on the surface-type desiccation machine evaporation tail vapour discharge manifold road, tail vapour caused by sludge drying passes through The desiccation machine evaporation tail vapour discharge manifold road enters the directly drainer and cooled down, and caused low-temperature wastewater is by described low Warm waste pipe discharge, and on-condensible gas is drawn through on-condensible gas discharge pipe by the on-condensible gas blower fan, from high temperature saturation The high temperature saturated vapor of steam pipework is through caused condensed water in high temperature after the surface-type desiccation machine through the condensed water in high temperature Pipe is linked into the surface heat exchanger, and the cold junction water after surface heat exchanger accesses to thin through the cold junction water pipe Water flash vessel.
- 3. a kind of backheat method sludge heat drying system according to claim 1, it is characterized in that, on surface heat exchanger On-condensible gas blower fan is also set up, the desiccation machine evaporation tail vapour vapour discharge manifold road accesses to the surface heat exchanger, by The surface heat exchanger reclaims to the waste heat of tail vapour, and high temperature saturated vapor after the surface-type desiccation machine through producing Condensed water in high temperature access to hydrophobic development unit, tail vapour is not coagulated through on-condensible gas caused by after surface heat exchanger by described Air fan is drawn.
- 4. a kind of backheat method sludge heat drying system according to claim 1, it is characterized in that, in the surface-type heat exchange Cold junction water pipe is also set up between device and the hydrophobic development unit, primary surface formula heat is also set up in the front end of surface heat exchanger Exchanger, primary surface formula heat exchanger also set up low-temperature wastewater pipe, on-condensible gas are also set up on primary surface heat exchanger Blower fan, high temperature saturated vapor are linked into the surface-type heat exchange through caused condensed water in high temperature after the surface-type desiccation machine Device, the cold junction water after the surface heat exchanger access to hydrophobic development unit；The desiccation machine evaporation tail vapour discharge is total Pipeline accesses to the primary surface formula heat exchanger, and low-temperature wastewater of the tail vapour after primary surface formula heat exchanger is by described Low-temperature wastewater pipe is discharged and on-condensible gas is drawn by the on-condensible gas blower fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848153.5A CN107487979A (en) | 2017-09-19 | 2017-09-19 | A kind of backheat method sludge heat drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848153.5A CN107487979A (en) | 2017-09-19 | 2017-09-19 | A kind of backheat method sludge heat drying system |
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| Publication Number | Publication Date |
|---|---|
| CN107487979A true CN107487979A (en) | 2017-12-19 |
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Family Applications (1)
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| CN201710848153.5A Pending CN107487979A (en) | 2017-09-19 | 2017-09-19 | A kind of backheat method sludge heat drying system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108996876A (en) * | 2018-09-19 | 2018-12-14 | 北京格威特环境投资股份有限公司 | A kind of heat reclamation type wet mud storage arrangement and method |
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| CN1686876A (en) * | 2005-03-18 | 2005-10-26 | 东南大学 | Superheated steam drying method for sludge and drying equipment |
| CN101823830A (en) * | 2010-04-06 | 2010-09-08 | 东南大学 | Sewage sludge drying device with superheated steam loop circulation and drying method |
| CN102992575A (en) * | 2012-12-14 | 2013-03-27 | 中国石油天然气集团公司 | Steam thermal cycle sludge drying method and system |
| CN104671633A (en) * | 2015-03-16 | 2015-06-03 | 天华化工机械及自动化研究设计院有限公司 | Steam condensate preheating and steam drying two-stage energy-saving sludge drying method |
| CN106145605A (en) * | 2016-08-30 | 2016-11-23 | 中电环保股份有限公司 | A kind of energy-saving sludge drying technique and device |
| JP2017094267A (en) * | 2015-11-24 | 2017-06-01 | 三菱マテリアルテクノ株式会社 | Water-containing sludge drying system |
-
2017
- 2017-09-19 CN CN201710848153.5A patent/CN107487979A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686876A (en) * | 2005-03-18 | 2005-10-26 | 东南大学 | Superheated steam drying method for sludge and drying equipment |
| CN101823830A (en) * | 2010-04-06 | 2010-09-08 | 东南大学 | Sewage sludge drying device with superheated steam loop circulation and drying method |
| CN102992575A (en) * | 2012-12-14 | 2013-03-27 | 中国石油天然气集团公司 | Steam thermal cycle sludge drying method and system |
| CN104671633A (en) * | 2015-03-16 | 2015-06-03 | 天华化工机械及自动化研究设计院有限公司 | Steam condensate preheating and steam drying two-stage energy-saving sludge drying method |
| JP2017094267A (en) * | 2015-11-24 | 2017-06-01 | 三菱マテリアルテクノ株式会社 | Water-containing sludge drying system |
| CN106145605A (en) * | 2016-08-30 | 2016-11-23 | 中电环保股份有限公司 | A kind of energy-saving sludge drying technique and device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108996876A (en) * | 2018-09-19 | 2018-12-14 | 北京格威特环境投资股份有限公司 | A kind of heat reclamation type wet mud storage arrangement and method |
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