CN207713619U - A kind of three-stage sludge drier - Google Patents
A kind of three-stage sludge drier Download PDFInfo
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- CN207713619U CN207713619U CN201721702514.7U CN201721702514U CN207713619U CN 207713619 U CN207713619 U CN 207713619U CN 201721702514 U CN201721702514 U CN 201721702514U CN 207713619 U CN207713619 U CN 207713619U
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Abstract
The utility model is related to a kind of three-stage sludge drier, including heat-exchange system, heating system, revert system and vacuum dehumidifying system, the heat-exchange system includes hothouse, heat-exchanging tube bundle and driving device；The heat-exchanging tube bundle is the cylindric Pipe bundle structure made of several heat exchanger tube set, and the both ends of heat-exchanging tube bundle are connected separately with steam inlet tube and steam outlet pipe, several oblique shovels and straight shovel are uniformly placed in the outer circle of heat-exchanging tube bundle；Both ends on the hothouse in heat-exchanging tube bundle are correspondingly provided with inlet port and outlet port respectively；The heating system includes boiler, and the steam (vapor) outlet of the boiler is connect with steam inlet tube；The revert system includes dewatered sludge hopper, and the import of the dewatered sludge hopper is connect with discharge port, and the outlet of dewatered sludge hopper is connected with conveyer；The vacuum dehumidifying system includes reheater and condenser；The whole system closure designs of the utility model are not necessarily to exhaust-gas treatment, are efficient, the energy saving, low pollution techniques in drying sludge processing.
Description
Technical field
The utility model is related to sludge treatment device fields, and in particular to a kind of three-stage sludge drier.
Background technology
At present in sewage sludge harmlessness processing application, the processing mode accounting of desiccation still ranks first, wherein main processing
Technique concentrates on mechanical deep dehydration and energy desiccation.Mainly fully melted with what medicament improved by impressed pressure in mechanical desiccation
The process that sludge is carried out to pressure dehydration is closed, the treatment process added amount of chemical is big, and treated, and sludge volume is still larger, subtracts
Hold unobvious, and in mechanical drying process, the conditioning medicament of addition, such as lime can cause sludge that can not fill or heat
Value reduction other handling problems such as is difficult to burn and occurs；Energy desiccation is divided into direct desiccation and indirectly drying, and direct desiccation is brought
Greatest problem be flue gas discharge capacity it is very big, vent gas treatment difficulty is higher, and processing cost is expensive；The energy consumption cost of indirectly drying
Also higher.
Utility model content
In view of the deficiencies of the prior art, it is dry that the technical problem to be solved by the present invention is to provide a kind of three-stage sludge
Dry machine, to realize efficient, energy saving, low stain Treatment of Sludge.
For this purpose, the utility model concrete scheme is as follows：
A kind of three-stage sludge drier, including heat-exchange system, heating system, revert system and vacuum dehumidifying system,
The heat-exchange system includes hothouse, is installed on dry indoor heat-exchanging tube bundle and for driving heat-exchanging tube bundle along own axes
The driving device of rotation；The heat-exchanging tube bundle is cylindric Pipe bundle structure, the heat exchange made of several heat exchanger tube set
The both ends of tube bank are connected separately with steam inlet tube and steam outlet pipe, and several oblique shovels and straight are uniformly placed in the outer circle of heat-exchanging tube bundle
Shovel, and the oblique shovel and straight shovel are spaced apart along the length direction of each heat exchanger tube；In the both ends of heat-exchanging tube bundle on the hothouse
It is correspondingly provided with inlet port and outlet port respectively；The heating system includes boiler, the steam (vapor) outlet and steam inlet tube of the boiler
Connection；The revert system includes dewatered sludge hopper, and the import of the dewatered sludge hopper is connect with discharge port, dewatered sludge hopper
Outlet is connected with for dewatered sludge to be returned to dry indoor conveyer；The vacuum dehumidifying system includes reheater and condensation
Device, the heat source of the reheater are the high-temperature flue gas that the boiler generates；The air inlet of the condenser passes through wind turbine and drying
Indoor connection, the gas outlet of condenser in reheater and hothouse by being connected to.
Further, the heat-exchanging tube bundle includes the front head being connect with steam inlet tube, the rear head being connect with steam outlet pipe
And the filtering heat transfer cavity between front head and rear head, between the front head, filtering heat transfer cavity and rear head
It is interconnected by several heat exchanger tubes；And the front head and filtering heat transfer cavity between heat exchanger tube closeness be higher than after seal
Heat exchanger tube closeness between head and filtering heat transfer cavity.
The beneficial effects of the utility model are：The utility model is based on heat balance principle, according to drying sludge process institute
It needs the different designs of thermal energy to dry the heat-exchanging tube bundle of indoor location, avoided heat waster, while by between heat-exchanging tube bundle border
Every the oblique shovel and straight shovel of arrangement, sludge is stirred and is pushed；It is also provided with revert system, makes full use of the mixed of dry and wet sludge
Cooperation raising drying efficiency；The negative pressure reduction sludge water content evaporation boiling point formed simultaneously using vacuum dehumidifying, and condensation are dry
Dry exhaust gas reenters the direct desiccation of system with boiler smoke heat exchange, and moisture in sludge is made to obtain rapid evaporation.This practicality is new
The whole system closure designs of type are not necessarily to exhaust-gas treatment, are efficient, the energy saving, low pollution techniques in drying sludge processing.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Wherein：11- boilers；12- steam inlet tubes；13- steam outlet pipes；21- reheaters；22- exhaust gas recirculation imports；23- is cold
Condenser；24- waste heat steam return ducts；25- wind turbines；31- returning charge imports；32- conveyers；33- dewatered sludge hoppers；41- front heads；
42- is tiltedly shoveled；43- straight shovels；44- transition heat transfer cavity；45- heat exchanger tubes；46- rear heads；4- hothouses；5- feed inlets；6- discharges
Mouthful；7- driving devices.
Specific implementation mode
The utility model is described in further details with reference to specific embodiment.
A kind of three-stage sludge drier shown in referring to Fig.1, including heat-exchange system, heating system, revert system and
Vacuum dehumidifying system.
The heat-exchange system includes hothouse 4, is installed in hothouse 4 heat-exchanging tube bundle and for driving heat-exchanging tube bundle
Along the driving device 7 of own axes rotation.The heat-exchanging tube bundle include front head 41, rear head 46 and be located at 41 and of front head
Filtering between rear head 46 is conducted heat cavity 44, if between the front head 41, filtering heat transfer cavity 44 and rear head 46 by
Dry heat exchanger tube 45 is interconnected, the cylindrical structure of set of each heat exchanger tube 45.Steam inlet tube 12 and steam outlet pipe 13 respectively with
Front head 41 and rear head 46 connect, and keep the degree of freedom of the relative rotation of end socket and pipeline, not the entire heat-exchanging tube bundle of shadow
Rotation；Driving device 7 can be motor, drive 41 rotation of front head by gear or belt transmission, and then drive entire heat exchange
Restrain rotation.
According to the characteristic of sludge drying, the mud drying process in hothouse 4, which can be divided into, strengthens drying stage, viscous rank
Section and final desiccation stage, the head end of corresponding hothouse 4 are to strengthen drying stage, are dried for high water content sludge, this Shen
45 closeness of heat exchanger tube that please be designed between corresponding front head 41 and filtering heat transfer cavity 44 is higher than rear head 46 and filtering
45 closeness of heat exchanger tube between heat transfer cavity 44 distributes more heats for strengthening dry high-water content sludge.
Linking part of the filtering heat transfer cavity 44 as its both ends different density degree heat exchanger tube 45, plays and evenly distributes again
The effect of both ends heat.
Several oblique shovels 42 and straight shovel 43, and the oblique shovel 42 and 43 edge of straight shovel are uniformly placed in the outer circle of heat-exchanging tube bundle
The length direction of each heat exchanger tube 45 is spaced apart, and tiltedly shovel 42 advances for pushing sludge in hothouse 4, and straight shovel 43 is then used for dirt
Mud is stirred in hothouse 4, keeps sludge fully dry.
It is correspondingly provided with feed inlet 5 and discharge port 6 respectively in the both ends of heat-exchanging tube bundle on the hothouse 4；The heat supply system
System includes boiler 11, and the steam (vapor) outlet of the boiler 11 is connect with steam inlet tube 12.
The revert system includes dewatered sludge hopper 33, and the import of the dewatered sludge hopper 33 is connect with discharge port 6, does dirt
The outlet 32 of pug bucket is connected with the conveyer 32 for being returned to dewatered sludge in hothouse 4.The dewatered sludge of return is to pass through
The rear that 45 part of intensive heat exchanger tube is sent into the returning charge import 31 of 4 top of hothouse reduces the portion by the mixing of dry and wet sludge
The moisture content for dividing sludge, to surmount the stick phase of sludge drying.
The vacuum dehumidifying system includes reheater 21 and condenser 23, and the heat source of the reheater 21 is the boiler 11
The high-temperature flue gas of generation；The air inlet of the condenser 23 in wind turbine 25 and waste heat steam return duct 24 and hothouse 4 by connecting
Logical, the gas outlet of condenser 23 is connect by reheater 21 with the exhaust gas recirculation import 22 on hothouse 4；For by hothouse 4
Damp and hot exhaust gas after interior drying extracts the condensed drying of device 23 out and reheated device 21 reheats, and reheater 21 is produced using boiler 11
Raw high-temperature flue gas carries out indirect heat exchange with exhaust gas of the condensation after dry, then exhaust gas is conveyed into again in hothouse 4, carries out
Direct sludge drying.
The concrete operating principle of the utility model is as follows：
Sewage plant biochemistry pool sludge enters drying through belt filter press press filtration to moisture content 80%, through sludge pump by feed inlet 5
Inside room 4, under the work of driving device 7, heat-exchanging tube bundle is with certain rotational speed, at the same time, in gas fired-boiler 11
Under effect, saturated vapor is generated（0.6MPa, 158 DEG C）, entered in hothouse 4 by steam inlet tube 12, successively pass through end socket 41,
After heat exchanger tube 45, transition heat transfer cavity 44, heat exchanger tube 45 and rear head 46, with sludge heat exchange desiccation, it is discharged through steam outlet pipe 13
Outside hothouse 4.
The wet mud of moisture content 80% is based on dryer inner structure diagonal during saturated vapor indirect heat exchange desiccation
It shovels under the action of 42 and straight shovel 43, first heat exchanger tube 45 region rapid evaporation high-moisture percentage of the sludge in drying machine leading portion comparatively dense
Sludge, the moisture content of sludge is down to 60% or so, and sludge enters stick phase while entering loose 45th area of heat exchanger tube in rear
Partially dried sludge in dewatered sludge hopper 33 is sent into returning charge import 31 via conveyer 32 at this time, falls into viscous region by section
It is mixed with 60% or so wet mud of moisture content, to reduce moisture content, to surmount the stick phase of sludge drying, and then sludge will
It is further dried, and drains into dewatered sludge hopper 33 eventually by discharge port 6 and collect.
At the same time, the vacuum dehumidifying system of the present embodiment, the waste heat steam that will be evaporated inside sludge using wind turbine 25
It is pumped to condenser 23 through waste heat steam return duct 24, the exhaust gas after condensation is dry enters reheater 21, is discharged with boiler 11
High-temperature flue gas heat exchange, re-entered into inside hothouse 4 by exhaust gas recirculation import 22, direct desiccation carried out to sludge
Meanwhile being acted on using the vacuum dehumidifying of wind turbine 25, the boiling point of sludge internal moisture evaporation reduces, to quickly remove moisture removal.
The preferable specific implementation mode of the above, only the utility model, but scope of protection of the utility model is not limited to
In this, any one skilled in the art is in the technical scope that the utility model discloses, the change that can readily occur in
Change or replace, should be covered within the scope of the utility model.Therefore scope of protection of the utility model is with claim
Subject to the protection domain of book.
Claims (2)
1. a kind of three-stage sludge drier, it is characterised in that：Including heat-exchange system, heating system, revert system and vacuum
Dehumidification system, the heat-exchange system include hothouse, are installed on dry indoor heat-exchanging tube bundle and for driving heat-exchanging tube bundle
Along the driving device of own axes rotation；The heat-exchanging tube bundle is the cylindrical tubes binding made of several heat exchanger tube set
The both ends of structure, the heat-exchanging tube bundle are connected separately with steam inlet tube and steam outlet pipe, are uniformly placed in the outer circle of heat-exchanging tube bundle
Several oblique shovels and straight shovel, and the oblique shovel and straight shovel are spaced apart along the length direction of each heat exchanger tube；In changing on the hothouse
The both ends of heat pipe bundle are correspondingly provided with inlet port and outlet port respectively；The heating system includes boiler, and the steam of the boiler goes out
Mouth is connect with steam inlet tube；The revert system includes dewatered sludge hopper, and the import of the dewatered sludge hopper is connect with discharge port,
The outlet of dewatered sludge hopper is connected with for dewatered sludge to be returned to dry indoor conveyer；The vacuum dehumidifying system includes
Reheater and condenser, the heat source of the reheater are the high-temperature flue gas that the boiler generates；The air inlet of the condenser is logical
It crosses in wind turbine and hothouse and is connected to, the gas outlet of condenser in reheater and hothouse by being connected to.
2. a kind of three-stage sludge drier according to claim 1, it is characterised in that：The heat-exchanging tube bundle includes and steaming
The front head of vapour inlet pipe connection, the rear head being connect with steam outlet pipe and the filtering heat transfer between front head and rear head
Cavity is interconnected between the front head, filtering heat transfer cavity and rear head by several heat exchanger tubes；And the front head with
Heat exchanger tube closeness between filtering heat transfer cavity is higher than the heat exchanger tube closeness between rear head and filtering heat transfer cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721702514.7U CN207713619U (en) | 2017-12-09 | 2017-12-09 | A kind of three-stage sludge drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721702514.7U CN207713619U (en) | 2017-12-09 | 2017-12-09 | A kind of three-stage sludge drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207713619U true CN207713619U (en) | 2018-08-10 |
Family
ID=63060108
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721702514.7U Active CN207713619U (en) | 2017-12-09 | 2017-12-09 | A kind of three-stage sludge drier |
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| CN (1) | CN207713619U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109081542A (en) * | 2018-09-06 | 2018-12-25 | 江苏康乾环境科技有限公司 | Method for reducing influence of sludge viscous zone on sludge dewatering by using total mixed flow reactor |
| CN109399890A (en) * | 2018-12-26 | 2019-03-01 | 华润电力（海丰）有限公司 | A kind of device and method for preventing mud drying device mix waste gas from condensing |
| CN111217511A (en) * | 2019-12-11 | 2020-06-02 | 中冶华天工程技术有限公司 | Sludge drying device |
-
2017
- 2017-12-09 CN CN201721702514.7U patent/CN207713619U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109081542A (en) * | 2018-09-06 | 2018-12-25 | 江苏康乾环境科技有限公司 | Method for reducing influence of sludge viscous zone on sludge dewatering by using total mixed flow reactor |
| CN109399890A (en) * | 2018-12-26 | 2019-03-01 | 华润电力（海丰）有限公司 | A kind of device and method for preventing mud drying device mix waste gas from condensing |
| CN109399890B (en) * | 2018-12-26 | 2024-03-15 | 华润电力（海丰）有限公司 | Device and method for preventing mixed waste gas of sludge drying device from condensing |
| CN111217511A (en) * | 2019-12-11 | 2020-06-02 | 中冶华天工程技术有限公司 | Sludge drying device |
| CN111217511B (en) * | 2019-12-11 | 2022-02-01 | 中冶华天工程技术有限公司 | Sludge drying device |
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| CP01 | Change in the name or title of a patent holder |
Address after: 230088 No. 91 science Avenue, hi tech Zone, Anhui, Hefei Patentee after: Cecep Guozhen Environmental Protection Technology Co.,Ltd. Address before: 230088 No. 91 science Avenue, hi tech Zone, Anhui, Hefei Patentee before: Anhui Guozhen environmental protection and energy saving Technology Co.,Ltd. |