CN202193706U - Sludge drying system utilizing residual heat - Google Patents
Sludge drying system utilizing residual heat Download PDFInfo
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- CN202193706U CN202193706U CN2011202488473U CN201120248847U CN202193706U CN 202193706 U CN202193706 U CN 202193706U CN 2011202488473 U CN2011202488473 U CN 2011202488473U CN 201120248847 U CN201120248847 U CN 201120248847U CN 202193706 U CN202193706 U CN 202193706U
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Abstract
A sludge drying system utilizing residual heat comprises a heat pump device, an air duct, a sludge drying device and is characterized in that the sludge drying system further comprises a compressor arranged in the heat pump device and driven by steam led from a steam supply port; the compressor is a steam driven compressor; working substance air from the air duct enters the sludge drying device to dry sludge after being heated through a condensing heat exchanger of the heat pump device; heat source generated by a heat pump driven by steam can efficiently use the pressure energy generated by high pressure steam; generated low pressure exhausted steam, flue gas and other high temperature heat source heat the working substance air in a combined manner, so that the working substance air with different temperatures is generated; and the sludge with different humidity is heated by air with different temperatures, and the sludge drying effect can be improved comprehensively.
Description
Technical field
The utility model relates to a kind of sludge dry system, particularly relates to a kind of sludge dry system that utilizes steam waste heat.
Background technology
In factory, often there is the exhaust steam of pyritous steam; During perhaps owing to the boiler apolegamy; In order to satisfy the operating mode of a part of demand HTHP, and the situation that another part steam needs intermediate relief occurs, the process of steam exhaust steam and intermediate relief will cause the waste of steam energy like this.
Adopting heat pump in the sludge dry system has been commonplace technique means; Can realize the fewer high-quality energy through heat pump, obtain the low grade heat energy more than 3 times, but heat pump can not be used but for the pyritous steam energy; Because refrigerant can be very high in the worst hot case overdraft; Head and shoulders above the heat absorption capacity of existing heat pump, like draw heat in the above steam of 100 degree, its vaporizer just head and shoulders above existing refrigerant system capacity.Different with other gases such as flue gas, high-temperature steam also has bigger pressure except the temperature height, be a kind of waste to high-grade energy and directly utilize this steam heating mud, how to utilize this energy to become the current problem that faces efficiently.
Summary of the invention
The purpose of the utility model is exactly in order to solve the above-mentioned problem, and a kind of energy that utilizes steam exhaust steam and HP steam intermediate relief process efficiently is provided, and realizes the mud heating, and the various thermals source of comprehensive utilization improve the system of mud heating efficiency.
A kind of sludge dry system that utilizes waste heat comprises thermal-pump unit, wind path, sludge drying mechanism, it is characterized in that: also comprise from steam supply opening and draw steam, drive the compressor in the thermal-pump unit; Described compressor is steam-powered compressor, and the working medium air after the condensing heat exchanger heating of thermal-pump unit, gets into the sludge drying mechanism sludge-drying from wind path.
Wherein, drawing steam is the steam that has greater than 0.5bar.
Wherein, also be provided with intermediate heat after the condensing heat exchanger of described thermal-pump unit, draw the further heating working medium air of exhaust steam process intermediate heat exchanger after steam is given compressor work.
Wherein, the described steam of drawing is used for other for exhaust steam after the compressor work to need the LP steam place.
Wherein, in the described exhaust steam feeding sludge drying mechanism of drawing after steam is given compressor work, being used to heat humidity is the mud more than 60%.
Wherein, also be provided with intermediate heat after the condensing heat exchanger of described thermal-pump unit, draw steam through intermediate heat exchanger heating working medium air.
Wherein, also in wind path, after the working medium air was discharged from sludge drying mechanism, the condensing surface of the vaporizer heat exchange of process thermal-pump unit, and then process earlier heated the vaporizer of described thermal-pump unit.
Wherein, described working medium air circulates in airtight wind path.
Wherein, described introducing steam produces after by dried sludge incineration.
Wherein, the high-temperature flue gas that produces after the described dried sludge incineration is through intermediate heat exchanger heating working medium air.
The heat pump that this adopts steam-powered compressor to form, the ability that can effectively utilize steam to do work on the one hand absorbs a large amount of heat energy from ambient air or in the return-air; On the other hand; The exhaust steam that vapour compressor is discharged still has higher temperature, can be used to heat mud, makes the energy of steam obtain the use to big degree; Particularly behind drying sludge; Steam and pyritous flue gas that the burning that acts as a fuel produces are used for sludge-drying, with the overall efficiency that improves drying sludge greatly.
Description of drawings
Fig. 1 is the system diagram of the utility model embodiment one;
Fig. 2 is the system diagram of the utility model embodiment two;
Fig. 3 is the system diagram of the utility model embodiment three;
Fig. 4 is the system diagram of the utility model embodiment four;
Fig. 5 is the system diagram of the utility model embodiment five;
Fig. 6 is the system diagram of the utility model embodiment six.
Wherein: 1 is sludge dry system; 2 is steam supply opening; 3 is the HP steam pipeline; 4 is the steam exhaust steam; 5 is vaporizer; 6 is condensing surface; 7 is throttle mechanism; 8 is steam driven compressor; 9 is wind path; 10 is intermediate heat; 11 is thermal-pump unit; 12 is sludge drying mechanism; 13 is blower fan; 14 is the driving part of compressor
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Embodiment one
Be illustrated in figure 1 as the system diagram of the utility model embodiment one, whole sludge dry system 1 comprises thermal-pump unit 11, sludge drying mechanism 12 and steam supply opening 2 among the figure; Content among thermal-pump unit 11 as the figure in the frame of broken lines; Through steam driven compressor 8 supercharging of gaseous coolant working medium is heated; 6 heat radiations condense into the high-pressure liquid refrigerant through condensing surface to drive refrigerant medium, and 7 throttlings become low pressure liquid through throttle mechanism, and heat absorption flashes to the low pressure gaseous state in vaporizer 5; Absorbed back compressor by steam driven compressor 8, so move in circles.Steam supply opening is drawn high temperature and high pressure steam, and through the driving part 14 of HP steam pipeline 3 steam entering compressor, Driven Compressor 8 is rotated, and becomes the steam exhaust steam 4 that compressor 8 is discharged after the HP steam acting.Wind path 9 is communicated with heat exchanger (like condensing surface 6) and sludge drying mechanism, makes the working medium air be able to the air channel that flow therein realizes drying sludge.Like the condensing surface 6 of outside air among Fig. 1 through thermal-pump unit 11; Through improving the temperature of working medium air with condensing surface 6 heat exchange; Working medium air admission sludge drying mechanism 12 through heating; Heating mud absorbs the moisture content of mud, realizes the drying of mud, discharges from sludge drying mechanism through the working medium air of cooling and humidification; On the other hand for the working medium air can be circulated, and with certain flow circulation, wind path 9 is provided with the circulation of blower fan 13 drive air.
In present embodiment one; Waste heat HP steam through utilizing factory can Driven Compressor, and the HP steam tail vapour that produces for other technologies or because some HP steams that lectotype selection causes must carry out reduced pressure treatment just can use pressure energy high-quality in the steam through steam driven compressor; And the form through heat pump; Higher-grade energy through less obtains more heat energy from air, add heat thereby improved, and has improved the efficient of drying sludge greatly.
In present embodiment one, from next HP steam standardpressure (gauge pressure) 5Bar of boiler, and the vapor pressure of arts demand (gauge pressure) is 1Bar, and the pressure reduction of vapor pressure wherein generally comes step-down through reducing valve, is a kind of waste for the energy.After adopting heat pump module 11; High pressure is introduced the steam driven compressor acting; The exhaust steam pressure that can control its outlet omits height and 1Bar, thereby has promptly satisfied processing requirement, makes the high-quality energy of this part HP steam be able to reasonable utilization again; Particularly, can improve the heat energy more than 2.5 times for sludge dry system through heat pump principle.Practice shows that generally drawing steam from steam supply opening 2 is the steam that has greater than 0.5bar, just can be as the Driven Compressor acting.
As shown in Figure 2; The utility model embodiment two is with the difference of embodiment one: the wind path 9 of working medium air is the system of a sealing; The working medium air of promptly from sludge drying mechanism 12, discharging carries out heat exchange through the vaporizer 5 of wind path 9 and thermal-pump unit 11; Thereby the airborne water vapour of working medium can be emitted the heat water of condensation that freeze-outs, and becomes the less air of regain; Simultaneously,, can effectively improve the vaporization temperature of vaporizer 5, thereby improve the heating capacity of thermal-pump unit 11, thereby improve the drying effect of whole sludge dry system 1 because the big air of regain contains bigger enthalpy.Adopt the working medium air circulation system of sealing simultaneously, can avoid the working medium air admission atmosphere of peculiar smell, reduce environmental pollution.In the present embodiment, the pressure of introducing steam is 1.5bar, after the Driven Compressor acting; Vapor pressure is less than 0.3bar, and from energy-conservation angle, such steam exhaust steam 4 still has certain heat energy; Can be according to the actual demand of factory; Steam exhaust steam 4 directly is used for other and needs the steam place, as: shower, domestic hot-water.
All the other are not stated and partly see embodiment one for details, no longer repeat.
As shown in Figure 3; The utility model embodiment three is with the difference of embodiment one: the working medium air is through after the condensing heat exchanger 6 of thermal-pump unit; Also be provided with intermediate heat 10; In intermediate heat 10, draw the exhaust steam 4 process intermediate heat exchangers 10 further heating working medium air after steam is given compressor 8 actings, improve the temperature of working medium air and reduce its relative humidity.After the working medium AT improves; Can improve working medium air heat transfer speed; The unit volume that improves the working medium air simultaneously can absorb the amount of aqueous vapor; Thereby improve the efficient of sludge-drying, such air will be far longer than the just Cryogenic air of condensing heat exchanger 6 heating of process thermal-pump unit 11 to the effect of the lower drying sludge of humidity.Through cooling to exhaust steam, can well make water recovery become water of condensation, be beneficial to the recovery of steam condensate.
All the other are not stated and partly see embodiment one for details, no longer repeat.
As shown in Figure 4; The difference of the utility model embodiment four and embodiment one is: the condensing surface 6 at thermal-pump unit 11 also is provided with intermediate heat 10 to the wind path 9 between the sludge drying mechanism 12; Draw steam through intermediate heat exchanger 10 heating working medium air from steam supply opening 2; Thereby can further improve the temperature of working medium air on the one hand than embodiment three, on the other hand, owing to the throughput ratio of drawing steam is bigger; One of the maintenance that can make the working medium air-stable is than higher temperature, and these embodiment three schemes can't satisfy.In order to satisfy the requirement that further improves the working medium temperature, the exhaust steam through Driven Compressor sometimes can't reach corresponding temperature, in addition, perhaps can not satisfy the requirement that the working medium air improves temperature and air mass dryness fraction.In the present embodiment, owing to pyritous working medium air heating mud, improved the drying efficiency of mud, simultaneously, the final mass dryness fraction of mud also significantly improves.Exsiccant mud is participated in heating steam as the heating flame raw material of factory steam boiler, can further improve the comprehensive utilization ratio of the energy like this.
All the other are not stated and partly see embodiment one for details, no longer repeat.
As shown in Figure 5; The utility model embodiment five is with the difference of embodiment one: when demand for heat is arranged in sludge drying mechanism 12 occurring rapidly; When perhaps occurring being difficult to the situation of sludge-drying; More under the heating medium situation of applying high-temp and heat-transfer capability, can directly feed in the sludge drying mechanisms perhaps for the exhaust steam 4 after compressor 8 does work with the steam of drawing of HTHP, being used to heat relative humidity be the mud below 40%.Because high temperature and high pressure steam all has very high temperature, and, often there is very high mass dryness fraction, so, the ability that absorbs water vapor in heating, also had.But this scheme only is suitable for the urgent heating of needs and perhaps heats under the bigger situation of difficulty.
All the other are not stated and partly see embodiment one for details, no longer repeat.
As shown in Figure 6; The difference of the utility model embodiment six and embodiment one is: the condensing surface 6 at thermal-pump unit 11 also is provided with intermediate heat 10 to the wind path 9 between the sludge drying mechanism 12; The high-temperature flue gas that produces after the dried sludge incineration is through intermediate heat exchanger 10 heating working medium air.Because this high-temperature gas has very high temperature, so, compare with embodiment four, can produce the higher Working medium gas of temperature.Can further make full use of the heat energy that the sludge-drying burning produces; A part improves the quality of steam; Thereby from environment, absorb more thermal energy through heat pump, another part is through the form direct heating working medium air of flue gas; Thereby avoided heat pump and can't comprehensively and efficiently solve the problem of drying sludge to the too high disadvantage of AT heating.
All the other are not stated and partly see embodiment one for details, no longer repeat.
Claims (8)
1. a sludge dry system that utilizes waste heat comprises thermal-pump unit (11), wind path (9), sludge drying mechanism (12), it is characterized in that: comprise that steam supply opening (2) that HP steam is provided is connected with compressor (8) in the thermal-pump unit (11); The wind path (9) that also comprises the working medium air, described wind path (9) is through the condensing heat exchanger (6) of thermal-pump unit (11); Described compressor (8) is the HP steam compressor driven.
2. the sludge dry system that utilizes waste heat according to claim 1 is characterized in that it is the steam greater than 0.5bar that described steam supply opening (2) is drawn steam.
3. the sludge dry system that utilizes waste heat according to claim 1; The condensing heat exchanger (6) that it is characterized in that described thermal-pump unit (11) also is provided with intermediate heat (10) afterwards, the steam exhaust steam (4) of described compressor (8) in intermediate heat (10) with the heat exchange of working medium air.
4. the sludge dry system that utilizes waste heat according to claim 1 is characterized in that being used to heat relative humidity is the mud below 40% in described steam exhaust steam (4) the feeding sludge drying mechanism (12) of drawing after steam is given compressor (8) acting.
5. the sludge dry system that utilizes waste heat according to claim 1 is characterized in that the condensing heat exchanger (6) of described thermal-pump unit (11) also is provided with intermediate heat (10) afterwards, draws steam through intermediate heat (10) heating working medium air.
6. according to each described sludge dry system that utilizes waste heat in the claim 1 to 6; The vaporizer (5) that it is characterized in that described thermal-pump unit (11) is also in wind path (9); After the working medium air is discharged from sludge drying mechanism (12); Vaporizer (5) heat exchange of process thermal-pump unit (11) earlier, and then through condensing heat exchanger (6) heating.
7. the sludge dry system that utilizes waste heat according to claim 7 is characterized in that described working medium air circulates in airtight wind path (9).
8. the sludge dry system that utilizes waste heat according to claim 9 is characterized in that the high-temperature flue gas that produces after the described dried sludge incineration, through intermediate heat (10) heating working medium air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202488473U CN202193706U (en) | 2011-07-12 | 2011-07-12 | Sludge drying system utilizing residual heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202488473U CN202193706U (en) | 2011-07-12 | 2011-07-12 | Sludge drying system utilizing residual heat |
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| CN202193706U true CN202193706U (en) | 2012-04-18 |
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| CN2011202488473U Expired - Fee Related CN202193706U (en) | 2011-07-12 | 2011-07-12 | Sludge drying system utilizing residual heat |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745880A (en) * | 2012-07-18 | 2012-10-24 | 绍兴文理学院 | Sludge drying system |
| CN102874999A (en) * | 2011-07-12 | 2013-01-16 | 北大工学院绍兴技术研究院 | Sludge drying system utilizing waste heat |
| CN105060265A (en) * | 2015-08-06 | 2015-11-18 | 贵州开磷集团股份有限公司 | Dehumidifying method by using low-pressure waste heat steam |
-
2011
- 2011-07-12 CN CN2011202488473U patent/CN202193706U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874999A (en) * | 2011-07-12 | 2013-01-16 | 北大工学院绍兴技术研究院 | Sludge drying system utilizing waste heat |
| CN102874999B (en) * | 2011-07-12 | 2014-08-13 | 北大工学院绍兴技术研究院 | Sludge drying system utilizing waste heat |
| CN102745880A (en) * | 2012-07-18 | 2012-10-24 | 绍兴文理学院 | Sludge drying system |
| CN105060265A (en) * | 2015-08-06 | 2015-11-18 | 贵州开磷集团股份有限公司 | Dehumidifying method by using low-pressure waste heat steam |
| CN105060265B (en) * | 2015-08-06 | 2017-12-22 | 贵州开磷集团股份有限公司 | A kind of dehumanization method using low-pressure residual heat steam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING ENDURANCE SHANHUA SPECIAL VEHICLE CO., L Effective date: 20121113 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121113 Address after: Shaoxing Institute of technology in Zhejiang province 312000 Shaoxing Paojiang Industrial Zone together at Peking University Institute of Technology Patentee after: Shaoxing Institute of Technology, College of Engineering, PKU Patentee after: Chongqing Endurance Shanhua Special Vehicle Co., Ltd. Address before: Shaoxing Institute of technology in Zhejiang province 312000 Shaoxing Paojiang Industrial Zone together at Peking University Institute of Technology Patentee before: Shaoxing Institute of Technology, College of Engineering, PKU |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20200712 |