CN207659295U - Double helix channel-type heat exchanger tube and sludge heating drop stick device - Google Patents
Double helix channel-type heat exchanger tube and sludge heating drop stick device Download PDFInfo
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- CN207659295U CN207659295U CN201721410816.7U CN201721410816U CN207659295U CN 207659295 U CN207659295 U CN 207659295U CN 201721410816 U CN201721410816 U CN 201721410816U CN 207659295 U CN207659295 U CN 207659295U
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Abstract
The utility model is related to a kind of double helix channel-type heat exchanger tubes and its sludge heating drop to stick device, the device includes double helix channel-type heat exchanger tube, sludge heating power desiccation machine, cyclone separator, wet mud storehouse, wet mud pumps, spray column and air-introduced machine, sludge heating power desiccation machine is connected by hot exhaust gas pipeline with cyclone separator, the gas vent of cyclone separator is connect with the air inlet of double helix channel-type heat exchanger tube, the gas outlet of double helix channel-type heat exchanger tube is connected by cold exhaust pipe with spray column, the gas vent of spray column is connected by carrier gas channel with air-introduced machine, wet mud storehouse, wet mud pumps, double helix channel-type heat exchanger tube and sludge heating power desiccation machine are sequentially connected by conveying pipeline.The utility model realizes that drying tail gas afterheat recycles, and can significantly reduce sludge drying energy consumption, improve flow stability of the wet mud in conveyance conduit, reduce the power consumption of sludge pumping, while reducing vent gas treatment water.
Description
Technical field
The utility model belongs to the technical field of Treatment of Sludge, more particularly to a kind of double helix channel-type heat exchanger tube and its
Sludge heating drop sticks device.
Background technology
It is increasingly stringent with the continuous propulsion and waste water control requirement of China's urbanization paces, urban wastewater treatment firm
Quantity and scale are promoted rapidly.According to statistics, at present China's whole year wet mud yield more than 4,000 ten thousand tons, it is contemplated that the year two thousand twenty will reach
To 6~9,000 ten thousand tons.Mechanical dehydration sludge (hereinafter referred to as " wet mud ") is the high-moisture percentage discharged in sewage disposal process
(moisture content is about 80%) sticky material, the drying and other treatment of wet mud are to complete sludge reduction and stabilisation, and realize sludge
The important means of recycling.For wet mud after desiccation, sludge volume reduces 1/5~1/3 to desiccation, forms particle
Or powdery stable prod, sludge character substantially improve.Dewatered sludge is odorless and pathogen-free domestic, alleviates the related negative effect of sludge
It answers, making that treated, sludge is more easy to be received.So no matter fill, burn, agricultural use or heat energy utilization, sludge drying it is several
It is indispensable processing procedure.
Currently, heating power desiccation is main and effective sludge drying method, have that desiccation speed is fast, treating capacity is big, accounts for
The advantages that ground is small, principle is that the heat temperature raising of sludge is realized using the convection current of heat, conduction or radiation, to make sludge water content
The process of evaporation.However, heating power desiccation energy consumption is higher, and it is the heat that vapor will absorb 2500KJ per 1kg moisture evaporations, it is each
The complete desiccation of wet mud of ton moisture content 80% about needs to consume the heat of 2920MJ, converts into 100kg and marks coal.Input desiccation machine
For heat other than sub-fraction radiation loss, the overwhelming majority all has left drying equipment with drying tail gas.Although drying tail gas packet
Containing a large amount of thermal energy, but the taste of these energy is very low, and energy utilization cost is higher, therefore in many sludge drying engineerings not
This portion of energy is used, this is also the main reason for causing current sludge heating power desiccation energy consumption to remain high.In addition,
In sludge drying system, wet mud is stored in wet mud storehouse, by sludge pump via pipeline to drying equipment, wet mud
Moisture content is usually 78~80%, is in paste, does not have mobility under room temperature, therefore pumping resistance is big, high energy consumption, and wet dirt
The pumping system stability of mud is relatively low, and then affects the stable operation of sludge drying.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of double helix channel-type heat exchanger tubes and its sludge to heat up
Drop sticks device, recycles sludge drying tail gas afterheat, improves wet mud flow stability.
Technical solution adopted by the utility model to solve its technical problems is providing a kind of double helix channel-type heat exchanger tube,
Including insulating tube, it is respectively equipped with air inlet and gas outlet on the insulating tube, conveying pipeline, the heat preservation are cased in the insulating tube
It manages and the passage of heat and cold passage that end is connected to, airflow direction turns back is separated by double helix partition board between conveying pipeline, it is described
Air inlet is connected to the beginning of the passage of heat, and the gas outlet is connected to the terminal of cold passage, and the bottom of the insulating tube corresponds to heat
Channel is equipped with several drain pipes.
The double helix partition board is made of two pieces of independent partition boards and is welded on conveying pipeline in a manner of spiral winding respectively
Outside, between the double helix partition board and insulating tube be sealed active connected.
The conveying pipe outer wall corresponds to the fin that the passage of heat is equipped with protrusion.
The cross-sectional sizes of the passage of heat are 2~5 times of cold passage section.
The drain pipe is arranged in heat preservation bottom of the tube with the passage of heat interval in 2~4 periods.
The drain pipe is connected to corresponding steam trap respectively in the outside of insulating tube.
The steam trap is connected to bilge main.
Technical solution adopted by the utility model to solve its technical problems is provide a kind of glutinous device of sludge heating drop, packet
Include above-mentioned double helix channel-type heat exchanger tube, sludge heating power desiccation machine, cyclone separator, wet mud storehouse, wet mud pump, spray column
And air-introduced machine, the sludge heating power desiccation machine are connected by hot exhaust gas pipeline with cyclone separator, the gas of the cyclone separator
Body outlet is connect with the air inlet of double helix channel-type heat exchanger tube, and the gas outlet of the double helix channel-type heat exchanger tube passes through cold tail
Feed channel is connected with spray column, and the gas vent of the spray column is connected by carrier gas channel with air-introduced machine, the wet mud storehouse,
Wet mud pump, double helix channel-type heat exchanger tube and sludge heating power desiccation machine are sequentially connected by conveying pipeline.
The dust discharge tube of the cyclone separator is connected with the dewatered sludge delivery pipe of sludge heating power desiccation machine.
The carrier gas channel is connected to by air-introduced machine with sludge heating power desiccation machine.
Advantageous effect
First, the utility model heats wet mud using drying tail gas afterheat, improves wet mud and enters desiccation machine
Temperature realizes that drying tail gas afterheat recycles, can significantly reduce sludge drying energy consumption；
Second, the utility model heats wet mud using drying tail gas afterheat, and mobility substantially carries after wet mud heating
It rises, improves flow stability of the wet mud in conveyance conduit, the flow resistance of wet mud in the duct is reduced, to drop
The low power consumption of sludge pump；
Third, the utility model heat wet mud using drying tail gas afterheat, vapor included in drying tail gas
It is most of to be condensed in double helix channel, to reduce the water consumption of spray column, save water resource；
4th, the utility model uses double helix channel-type heat exchanger tube, and hot and cold channel is separated by double helix partition board, whole
Body is compact-sized, and consumptive material is few, is convenient for the old system reform；
5th, the utility model uses double helix channel-type heat exchanger tube, heat source to flow, make in a coiled fashion in the channel
It is heated evenly to obtain wet mud, can avoid due to sludge flowing instability sex chromosome mosaicism caused by by thermal deviation；
6th, the utility model detaches drying tail gas dust using cyclone separator, and dust is avoided to block drying tail gas stream
Dynamic channel；
7th, in double helix channel designed by the utility model, the sludge carrier pipe outer wall of the passage of heat is equipped with fin, can be big
Width improves the convection transfer rate of tail gas side, improves heat exchange efficiency；
8th, in double helix channel designed by the utility model, the bottom of the passage of heat is equipped with drain pipe, can discharge heat in time
Condensed water in channel, prevents water hammer accident.
Description of the drawings
Fig. 1 is the structural schematic diagram that the utility model sludge heating drop sticks device.
Fig. 2 is the partial cutaway view of the utility model double helix channel-type heat exchanger tube.
Fig. 3 is the sectional view of the utility model double helix channel-type heat exchanger tube.
Specific implementation mode
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, in the content for having read the utility model instruction
Later, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms equally fall within this Shen
It please the appended claims limited range.
A kind of sludge heating drop as shown in Figure 1 sticks device, including sludge heating power desiccation machine 1, cyclone separator 23, double spiral shells
Revolve channel-type heat exchanger tube 12, wet mud storehouse 9, wet mud pump 10, spray column 5 and air-introduced machine 8.
Sludge heating power desiccation machine 1 is connected by hot exhaust gas pipeline 2 and cyclone separator 23, and the gas of cyclone separator 23 goes out
Mouth is connect with the air inlet 3 of double helix channel-type heat exchanger tube 12, and the dust discharge tube 25 and sludge heating power of cyclone separator 23 are dry
The dewatered sludge delivery pipe 24 of change machine 1 is connected.The gas outlet 4 of double helix channel-type heat exchanger tube 12 passes through cold exhaust pipe 6 and spray
Tower 5 is connected, and the gas vent of spray column 5 is connected by carrier gas channel 7 with air-introduced machine 8, and carrier gas channel 7 passes through air-introduced machine 8 and dirt
Mud heating power desiccation machine 1 is connected to.Wet mud storehouse 9, wet mud pump 10, double helix channel-type heat exchanger tube 12 and sludge heating power desiccation machine 1
It is sequentially connected by conveying pipeline 11.
As shown in Figures 2 and 3, the outer layer of double helix channel-type heat exchanger tube 12 is insulating tube 18, is set respectively on insulating tube 18
There are air inlet 3 and gas outlet 4, conveying pipeline 11 is cased in insulating tube 18.Between insulating tube 18 and conveying pipeline 11 by double helix every
It is independent by two pieces that plate 13 is separated into end connection, the passage of heat 20 that airflow direction turns back and cold passage 21, double helix partition board 13
Partition board is formed and is welded on the outside of conveying pipeline 11 in a manner of spiral winding respectively, between double helix partition board 13 and insulating tube 18
For sealed active connected, compact overall structure, consumptive material is few, is convenient for the old system reform.Double helix partition board 13 helically arrange by structure, divides
The passage of heat 20 to be formed and cold passage 21 are cut with spiral loop around conveying pipeline 11 so that drying tail gas flows in the passage of heat 20
Sludge carrier pipe 11 can be evenly heated when heat release.
Air inlet 3 is connected to the beginning of the passage of heat 20, and gas outlet 4 is connected to the terminal of cold passage 21, due to heat drying tail
Volume can substantially reduce after the condensed heat release of gas, therefore the section of the passage of heat 20 is more than cold passage 21, the sectional area of the passage of heat 20
It is set as 3 times of 21 sectional area of cold passage.11 outer wall of conveying pipeline in 20 side of the passage of heat is equipped with fin 17, can greatly improve dry
Change the convection transfer rate of tail gas, improves heat exchange efficiency.
The passage of heat 20 indicates a flowing period for 11 1 weeks around conveying pipeline, to prevent the condensed water of drying tail gas in the passage of heat
Interior accumulation causes water attack problem, using 2~4 20 periods of the passage of heat is interval setting drain pipe 19 and hydrophobic in 18 bottom of insulating tube
Condensed water is passed through bilge main 15 by device 14, steam trap 14, is finally discharged into hydrophobic pond 16 by bilge main 15.
Sludge heating drop sticks device when in use, and the wet mud 22 in wet mud storehouse 9 is sent into wet dirt through wet mud pump 10
Mud conveying pipeline 11, wet mud 22 are heated after flowing through double helix channel-type heat exchanger tube 12 and heat up, and then flow into sludge heating power desiccation
Machine 1.Wet mud 22 is heated in sludge heating power desiccation machine 1 and generates drying tail gas, enters cyclone separator by hot exhaust gas pipeline 2
23 come out the dust separation in drying tail gas, and the dust separated imports dewatered sludge delivery pipe by dust discharge tube 25
24.The tail gas of purification through cyclone separator 23 outlet into double helix channel-type heat exchanger tube 12 the passage of heat 20, hot exhaust gas along
The passage of heat 20 is heated release on one side flow while, and the condensed water generated after heat release is discharged through drain pipe 19.Drying tail gas flow to double helix
Enter cold passage 21 behind 12 tail portion of channel-type heat exchanger tube, turned back with negative direction, and flowed out from gas outlet 4, passes through cold exhaust pipe 6
Spray column 5 is flowed into, drying tail gas forms carrier gas after spraying desuperheat, and sludge heating power is returned to via carrier gas channel 7 by air-introduced machine 8
Desiccation machine 1.
The drying tail gas temperature exported from sludge heating power desiccation machine 1 is the wet mud 22 in 80~100 DEG C, with conveying pipeline 11
After heat exchange, the temperature of wet mud 22 can be promoted to 75~95 DEG C, wet sludge anhydration energy consumption can reduce by 15~21%.Wet mud
Mobility is substantially improved after heating, and flow resistance of the wet mud in pipeline 11 can reduce by 20~35%, so that wet mud
The energy consumption of pump 10 also accordingly reduces by 20~35%.Drying tail gas vapour content after heat release in double helix channel-type heat exchanger tube 12
40~60% are can remove, amount of residual heat further spraying cooling in spray column 5 can save 40~60% spray water consumption.
Claims (10)
1. a kind of double helix channel-type heat exchanger tube, including insulating tube (18), air inlet (3) is respectively equipped on the insulating tube (18)
With gas outlet (4), it is characterised in that：It is cased with conveying pipeline (11), the insulating tube (18) and conveying pipeline in the insulating tube (18)
(11) passage of heat (20) and cold passage of end connection, airflow direction fold-back are separated between by double helix partition board (13)
(21), the air inlet (3) is connected to the beginning of the passage of heat (20), and the gas outlet (4) is connected to the terminal of cold passage (21),
The bottom of the insulating tube (18) corresponds to the passage of heat (20) and is equipped with several drain pipes (19).
2. a kind of double helix channel-type heat exchanger tube according to claim 1, it is characterised in that：The double helix partition board (13)
Be made of and be welded in a manner of spiral winding respectively the outside of conveying pipeline (11) two pieces of independent partition boards, the double helix every
It is sealed active connected between plate (13) and insulating tube (18).
3. a kind of double helix channel-type heat exchanger tube according to claim 1, it is characterised in that：Conveying pipeline (11) outer wall
The corresponding passage of heat (20) is equipped with the fin (17) of protrusion.
4. a kind of double helix channel-type heat exchanger tube according to claim 1, it is characterised in that：The passage of heat (20) is cut
Face size is 2~5 times of cold passage (21) section.
5. a kind of double helix channel-type heat exchanger tube according to claim 1, it is characterised in that：The drain pipe (19) is in guarantor
Temperature pipe (18) bottom is spaced setting with the passage of heat (20) in 2~4 periods.
6. a kind of double helix channel-type heat exchanger tube according to claim 1, it is characterised in that：The drain pipe (19) is being protected
The outside of temperature pipe (18) is connected to corresponding steam trap (14) respectively.
7. a kind of double helix channel-type heat exchanger tube according to claim 6, it is characterised in that：Steam trap (14) connection
To bilge main (15).
8. a kind of sludge heating drop sticks device, including double helix channel-type heat exchanger tube (12) described in claim 1, sludge heating power
Desiccation machine (1), cyclone separator (23), wet mud storehouse (9), wet mud pump (10), spray column (5) and air-introduced machine (8), feature
It is：The sludge heating power desiccation machine (1) is connected by hot exhaust gas pipeline (2) and cyclone separator (23), the cyclonic separation
The gas vent of device (23) is connect with the air inlet (3) of double helix channel-type heat exchanger tube (12), the double helix channel-type heat exchange
The gas outlet (4) of pipe (12) is connected by cold exhaust pipe (6) with spray column (5), and the gas vent of the spray column (5) passes through
Carrier gas channel (7) is connected with air-introduced machine (8), the wet mud storehouse (9), wet mud pump (10), double helix channel-type heat exchanger tube
(12) it is sequentially connected by conveying pipeline (11) with sludge heating power desiccation machine (1).
9. a kind of sludge heating drop according to claim 8 sticks device, it is characterised in that：The cyclone separator (23)
Dust discharge tube (25) is connected with the dewatered sludge delivery pipe (24) of sludge heating power desiccation machine (1).
10. a kind of sludge heating drop according to claim 8 sticks device, it is characterised in that：The carrier gas channel (7) passes through
Air-introduced machine (8) is connected to sludge heating power desiccation machine (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721410816.7U CN207659295U (en) | 2017-10-27 | 2017-10-27 | Double helix channel-type heat exchanger tube and sludge heating drop stick device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721410816.7U CN207659295U (en) | 2017-10-27 | 2017-10-27 | Double helix channel-type heat exchanger tube and sludge heating drop stick device |
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| Publication Number | Publication Date |
|---|---|
| CN207659295U true CN207659295U (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721410816.7U Active CN207659295U (en) | 2017-10-27 | 2017-10-27 | Double helix channel-type heat exchanger tube and sludge heating drop stick device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107673577A (en) * | 2017-10-27 | 2018-02-09 | 上海城投污水处理有限公司 | Double helix channel-type heat exchanger tube and the glutinous device of sludge heating drop |
| CN113087356A (en) * | 2021-03-31 | 2021-07-09 | 华能苏州热电有限责任公司 | Sludge drying system and working method thereof |
-
2017
- 2017-10-27 CN CN201721410816.7U patent/CN207659295U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107673577A (en) * | 2017-10-27 | 2018-02-09 | 上海城投污水处理有限公司 | Double helix channel-type heat exchanger tube and the glutinous device of sludge heating drop |
| CN107673577B (en) * | 2017-10-27 | 2024-02-27 | 上海城投污水处理有限公司 | Double-spiral channel type heat exchange tube and sludge temperature rising and viscosity reducing device |
| CN113087356A (en) * | 2021-03-31 | 2021-07-09 | 华能苏州热电有限责任公司 | Sludge drying system and working method thereof |
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