CN104034126A - Superheated-steam drying system and process - Google Patents
Superheated-steam drying system and process Download PDFInfo
- Publication number
- CN104034126A CN104034126A CN201410276492.7A CN201410276492A CN104034126A CN 104034126 A CN104034126 A CN 104034126A CN 201410276492 A CN201410276492 A CN 201410276492A CN 104034126 A CN104034126 A CN 104034126A
- Authority
- CN
- China
- Prior art keywords
- steam
- temperature
- drying
- superheated
- air
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a superheated-steam drying system and process applicable to fields of industrial sludge treatment, chemical industry, medicament, wood, food, agriculture and sideline products and the like. The superheated-steam drying system comprises a steam compressor, a condensing heat exchanger, a circulating fan, a drying chamber, a cyclone separator and the like. During the drying process, superheated steam discharged from the drying chamber is divided into two channels, one channel of the superheated steam flows through the steam compressor to increase temperature and pressure, is condensed in the condensing heat exchanger to discharge latent heat, and in the meantime exchanges heat with steam of the other channel directly entering the condensing heat exchanger, the temperature and superheat degree of uncompressed steam further rise after the uncompressed steam absorbs the heat, and the superheated steam is then led into the drying chamber to have materials dried, so that closed circulation of the superheated steam and recycling of energy are formed. The superheated-steam drying system is remarkable in energy-saving effect, good in drying quality of products, free of live steam for drying, environment friendly, odorless, oxygen-free, free of explosion hazards, save and reliable.
Description
Technical field
The present invention relates to a kind of superheat steam drying system and technique that is applied to the dry fields such as industrial sludge processing, chemical industry, medicine, timber, food and agricultural byproducts.
Background technology
Dry refer under Artificial Control or natural conditions, remove material in the technique of moisture.In the process of product, dry is a very important link, has been widely used in the fields such as industrial sludge processing, chemical industry, medicine, timber, food and agricultural byproducts.Simultaneously, research finds that the dry ratio consuming energy accounts for the increase year by year of ratio of total energy consumption, 14% of developed country's industrial consumption energy is used to be dried, and China technology is more backward in this respect, specific energy consumption in dry field is higher, and the dry power consumption of some industry even accounts for produces 35% of total power consumption.In the face of increasingly serious energy crisis and environmental pressure, how to reduce the energy consumption problem of dry run, become a research emphasis of dry technology research.
The dry technology that traditional industrial production generally adopts mainly contains: vulcanization bed is dry, spraying is dry, infrared radiation drying, pneumatic conveying drying, heated-air drying etc., these dry technology development times are long, apply comparatively mature and reliable, have application comparatively widely in the world.But how realizing energy-conserving and environment-protective is a major challenge that traditional drying technology faces.International dry chairman professor Mujumdar of association thinks that the development of dry technology will be along improving the quality of products, improve energy utilization rate, reduce environmental pollution, handling safety, being easy to the future developments such as control.In novel dried technology, Superheated Steam Drying Technology has himself obvious advantage, can be good at reaching these targets simultaneously, and therefore, Superheated Steam Drying Technology is one of the most potential dry technology.
Superheat steam drying refers to superheated steam and directly contacts with the material that is dried and remove the drying mode of moisture.Compare with traditional dry technologies such as heated-air drying, Superheated Steam Drying Technology has advantages of as follows: can make full use of the latent heat of steam, and energy-saving effect highly significant, specific energy consumption is only 1/3rd of common heated-air drying energy consumption; Superior product quality; Heat transfer coefficient is large, and specific heat capacity is large, and without resistance to mass tranfer, steam consumption is few; Without the danger of exploding and catching fire; There is sterilizing effect, be beneficial to protection of the environment simultaneously.Superheat steam drying equipment has started to be applied to produce abroad, and has obtained good effect.At home, because technical threshold is higher, the rarely production of application.Therefore, research and overdevelop steam drying technology, for improving drying efficiency, reducing energy consumption for drying, less environmental pollution, be significant.
Summary of the invention
The object of the invention is in order to provide a kind of energy-saving effect remarkable, dry products quality better, without the external world, feed raw steam, applicable to a kind of superheat steam drying system and the technique in the fields such as industrial sludge processing, chemical industry, medicine, timber, food and agricultural byproducts.This system architecture comprises vapour compression machine (1), condensing heat exchanger (2), water pump (3), circulating fan (4), heater (5), hothouse (6), cyclone separator (7), gas-liquid heat-exchange (8), feed hopper (9), preheater (10), mixing chamber (11), insulation water interlayer (12).It is characterized in that: drying system is when starting, because system does not need the extraneous raw steam that feeds, therefore first by heater (5), add hot-air, hot-air is first driven by circulating fan (4), now hot-air becomes the closed cycle in system, along with dry run material moisture rapid evaporation is in hot-air, the most air in system are replaced by steam, and now system starts to enter into superheat steam drying state.The material of discharging from hothouse (6) is subject to the steam producing thermal evaporation after cyclone separator (7) is removed the solid particle comprising in steam, be divided into two-way, the road vapour compression machine (1) of flowing through wherein, its temperature, pressure is raise, enter into condensing heat exchanger (2), directly enter steam in condensing heat exchanger (2) with an other road and carry out heat exchange.Due to higher than the temperature of not passing through vapour compression machine (1) through this its temperature, pressure of road steam of vapour compression machine (1) compression, thereby formation heat transfer temperature difference, thereby transfer heat to unpressed steam in condensing heat exchanger (2), its temperature is improved, become the superheated steam that the degree of superheat is higher, this road uncompressed the steam improving after the degree of superheat are passed in hothouse (6) material are dried by circulating fan (4), thereby form the closed cycle of superheated steam; And in condensing heat exchanger (1), emit latent heat and be condensed into the water of equal temperature through the steam of vapour compression machine (1) Zhe road HTHP, this condensed water with uniform temperature is driven into by water pump (3) in the insulation water interlayer (12) of hothouse (6) and cyclone separator (7), so that hothouse (6) and cyclone separator (7) are produced to heat insulation effect.Condensed water is passed in gas-liquid heat-exchange (8) and carries out heat exchange with air after flowing out from insulation water interlayer (12), through its temperature reduction of condensed water of heat exchange, directly discharges or do further processing.And in gas-liquid heat-exchange (8), the temperature of air is raise, the air after heating is passed in preheater (10) material from feed hopper (9) is carried out to preheating.After the material of preheater (10) preheating mixes with part dry material in mixing chamber (11), be passed in hothouse (6) and be dried.When a dried dry material part turns back to and mixes with wet stock in mixing chamber (11), a part of dry material is directly discharged as having dried product in addition.
The advantage of superheat steam drying system of the present invention and technique is: (1) this technique is reuse steam condensation latent heat fully, energy-saving effect highly significant, and the aquifer yield of specific energy consumption is 2～10 times of common dry technology; (2) this technique heat transfer coefficient is large, and specific heat capacity is large, and without resistance to mass tranfer, rate of drying is fast; (3) superior product quality, and there is the effect of sterilizing simultaneously; (4), with respect to other Superheated Steam Drying Technology, this technique does not need the external world that other raw steam is provided completely, can be equipped with separately boiler and steam pipe line for this system; (5) for dry steam, in internal system, being closed cycle, having all advantages of superheat steam drying, is a kind of environment-protective no-smell, the oxygen-free safe drying process without explosion danger.(6) pressure of this system and the baking temperature of material are adjustable, thereby make this technique can be widely used in the dry fields such as industrial sludge processing, chemical industry, medicine, timber, food and agricultural byproducts.
Accompanying drawing explanation
Fig. 1 is system flow chart of the present invention
In figure: 1. vapour compression machine 2. condensing heat exchanger 3. water pump 4. circulating fan 5. heaters
6. hothouse 7. cyclone separator 8. heat exchanger 9. feed hopper 10. preheaters
11. mixing chamber 12. insulation water interlayers
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 shows superheat steam drying system process chart of the present invention, shown in Fig. 1, as follows at working-flow:
1) by belt drive or other transmission mechanisms, material to be dried is sent in hothouse, then started system.In system starting process, material to be dried no longer adds, and after system has started, feed system is reworked and material to be dried is constantly sent in system;
2) when system starts, by heater (5), add hot-air, hot-air is driven by circulating fan (4), and now hot-air becomes the closed cycle in system.Along with dry run material moisture rapid evaporation is in hot-air, the most air in system are replaced by steam, and now system starts to enter superheat steam drying state, and start-up course completes;
3) superheated steam of discharging from hothouse (6) is divided into two-way after cyclone separator (7), the road vapour compression machine (1) of flowing through wherein, its temperature, pressure is then by condensing heat exchanger (2) after raising, and one directly enters in condensing heat exchanger (2) in addition;
4) in condensing heat exchanger (2), because its temperature, pressure of the steam through vapour compression machine (1) raises, thereby formation heat transfer temperature difference, make steam and the unpressed steam of HTHP carry out heat exchange, heat exchange through condensing heat exchanger (2), unpressed steam further raises owing to absorbing heat temperature, and the steam that temperature raises is then passed into again and in hothouse (6), carries out the dry of material, thereby forms the closed cycle of superheated steam;
5) simultaneously, the steam of the HTHP compressing through vapour compression machine (1) is by the heat exchange of condensing heat exchanger (2), emit latent heat and be condensed into water, the condensed water with uniform temperature is driven into by water pump (3) in the insulation water interlayer (12) of hothouse (6) and cyclone separator (7), to form the heat insulation effect of hothouse (6) and cyclone separator (7);
6) after condensed water flows out from insulation water interlayer (12), be passed in heat exchanger (8) and carry out heat exchange with air, through condensed water its temperature reduction, directly discharge of heat exchange.And in heat exchanger (8), the temperature of air is raise, the air after heating is passed in preheater (10) material to be dried from feed hopper (9) is carried out to preheating;
7) after the material of preheater (10) preheating mixes with part dry material in mixing chamber (11), be passed in hothouse (6) and be dried;
8) dried material is constantly discharged from hothouse (6), and when a dry material part turns back to and mixes with wet stock in mixing chamber (11), a part of dry material is directly discharged as product in addition.
By above-mentioned technological process, reached that dry materials, energy reclaim, the object of energy-saving and cost-reducing, environmental protection.The present invention shows through the actual measurement of the model machine of making: the adjustable pressure of system and baking temperature make the application of this system more flexible, simple structure makes this system more reliable, and the superheated steam circulation of closed makes this system have higher efficiency and better energy-saving effect.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; some nonessential improvement and adjustment that person skilled in art makes the present invention according to the content of the invention described above, still belong to protection scope of the present invention.
Claims (1)
1. one kind is applicable to industrial sludge processing, chemical industry, medicine, timber, a kind of superheat steam drying system and the technique in the field such as food and agricultural byproducts, this system architecture comprises vapour compression machine (1), condensing heat exchanger (2), water pump (3), circulating fan (4), heater (5), hothouse (6), cyclone separator (7), gas-liquid heat-exchange (8), feed hopper (9), preheater (10), mixing chamber (11), insulation water interlayer (12), it is characterized in that: drying system is when starting, because system does not need the extraneous raw steam that feeds, therefore first by heater (5), add hot-air, hot-air is first driven by circulating fan (4), now hot-air becomes the closed cycle in system, along with dry run material moisture rapid evaporation is in hot-air, most air in system are replaced by steam, now system starts to enter into superheat steam drying state, the material of discharging from hothouse (6) is subject to the steam producing thermal evaporation after cyclone separator (7) is removed the solid particle comprising in steam, be divided into two-way, the road vapour compression machine (1) of flowing through wherein, its temperature, pressure is raise, enter into condensing heat exchanger (2), directly enter steam in condensing heat exchanger (2) with an other road and carry out heat exchange, due to higher than the temperature of not passing through vapour compression machine (1) through this its temperature, pressure of road steam of vapour compression machine (1) compression, thereby formation heat transfer temperature difference, thereby transfer heat to unpressed steam in condensing heat exchanger (2), its temperature is improved, become the superheated steam that the degree of superheat is higher, this road uncompressed the steam improving after the degree of superheat are passed in hothouse (6) material are dried by circulating fan (4), thereby form the closed cycle of superheated steam, and in condensing heat exchanger (1), emit latent heat and be condensed into the water of equal temperature through the steam of vapour compression machine (1) Zhe road HTHP, this condensed water with uniform temperature is driven into by water pump (3) in the insulation water interlayer (12) of hothouse (6) and cyclone separator (7), so that hothouse (6) and cyclone separator (7) are produced to heat insulation effect, condensed water is passed in gas-liquid heat-exchange (8) and carries out heat exchange with air after flowing out from insulation water interlayer (12), through its temperature reduction of condensed water of heat exchange, directly discharges or do further processing.And in gas-liquid heat-exchange (8), the temperature of air is raise, the air after heating is passed in preheater (10) material from feed hopper (9) is carried out to preheating; After the material of preheater (10) preheating mixes with part dry material in mixing chamber (11), be passed in hothouse (6) and be dried; When a dried dry material part turns back to and mixes with wet stock in mixing chamber (11), a part of dry material is directly discharged as having dried product in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276492.7A CN104034126B (en) | 2014-06-20 | 2014-06-20 | A kind of superheat steam drying system and technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276492.7A CN104034126B (en) | 2014-06-20 | 2014-06-20 | A kind of superheat steam drying system and technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104034126A true CN104034126A (en) | 2014-09-10 |
| CN104034126B CN104034126B (en) | 2019-08-02 |
Family
ID=51465001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410276492.7A Expired - Fee Related CN104034126B (en) | 2014-06-20 | 2014-06-20 | A kind of superheat steam drying system and technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104034126B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758162A (en) * | 2016-03-07 | 2016-07-13 | 南京航空航天大学 | Water vapor vacuum rapid drying system and working method |
| CN106495427A (en) * | 2016-12-14 | 2017-03-15 | 南京航空航天大学 | The continuous drying system of MVR superheated steam sludge and method of work |
| CN107252666A (en) * | 2017-07-12 | 2017-10-17 | 艾洛益(杭州)材料科技有限公司 | Steam-water separation outlet device applied to anaerobic closed system under inert gas shielding |
| CN108759442A (en) * | 2018-04-18 | 2018-11-06 | 浙江理工大学 | Superheated steam heating and drying device and method |
| CN108981372A (en) * | 2018-07-05 | 2018-12-11 | 伊婕 | Highly effective drying system |
| CN114322506A (en) * | 2021-12-31 | 2022-04-12 | 天津农学院 | Conical disc type superheated steam drying device and method suitable for granular materials |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009133591A (en) * | 2007-12-03 | 2009-06-18 | Ohkawara Kakohki Co Ltd | Continuous type normal pressure superheated water vapor drying method and device |
| CN102823640A (en) * | 2012-09-24 | 2012-12-19 | 陈锦权 | Energy-conservation drying device for drying vegetables and seaweed type products and drying method thereof |
| CN202915682U (en) * | 2012-11-30 | 2013-05-01 | 山东科院天力节能工程有限公司 | Drying system recycling waste heat steam heat |
| CN203478891U (en) * | 2013-09-05 | 2014-03-12 | 山东天力干燥股份有限公司 | Steam rotary drying system using superheated steam humidity carrying |
| CN103644709A (en) * | 2013-12-25 | 2014-03-19 | 山东奥诺能源科技有限公司 | Superheated steam drying device and method |
| CN103822440A (en) * | 2012-11-18 | 2014-05-28 | 航天长征化学工程股份有限公司 | steam fluidized bed drying device and drying method |
-
2014
- 2014-06-20 CN CN201410276492.7A patent/CN104034126B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009133591A (en) * | 2007-12-03 | 2009-06-18 | Ohkawara Kakohki Co Ltd | Continuous type normal pressure superheated water vapor drying method and device |
| CN102823640A (en) * | 2012-09-24 | 2012-12-19 | 陈锦权 | Energy-conservation drying device for drying vegetables and seaweed type products and drying method thereof |
| CN103822440A (en) * | 2012-11-18 | 2014-05-28 | 航天长征化学工程股份有限公司 | steam fluidized bed drying device and drying method |
| CN202915682U (en) * | 2012-11-30 | 2013-05-01 | 山东科院天力节能工程有限公司 | Drying system recycling waste heat steam heat |
| CN203478891U (en) * | 2013-09-05 | 2014-03-12 | 山东天力干燥股份有限公司 | Steam rotary drying system using superheated steam humidity carrying |
| CN103644709A (en) * | 2013-12-25 | 2014-03-19 | 山东奥诺能源科技有限公司 | Superheated steam drying device and method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758162A (en) * | 2016-03-07 | 2016-07-13 | 南京航空航天大学 | Water vapor vacuum rapid drying system and working method |
| CN106495427A (en) * | 2016-12-14 | 2017-03-15 | 南京航空航天大学 | The continuous drying system of MVR superheated steam sludge and method of work |
| CN107252666A (en) * | 2017-07-12 | 2017-10-17 | 艾洛益(杭州)材料科技有限公司 | Steam-water separation outlet device applied to anaerobic closed system under inert gas shielding |
| CN107252666B (en) * | 2017-07-12 | 2022-10-21 | 艾洛益(杭州)材料科技有限公司 | Steam-water separation outlet device applied to oxygen-free closed system under inert gas protection |
| CN108759442A (en) * | 2018-04-18 | 2018-11-06 | 浙江理工大学 | Superheated steam heating and drying device and method |
| CN108981372A (en) * | 2018-07-05 | 2018-12-11 | 伊婕 | Highly effective drying system |
| CN114322506A (en) * | 2021-12-31 | 2022-04-12 | 天津农学院 | Conical disc type superheated steam drying device and method suitable for granular materials |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104034126B (en) | 2019-08-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104034126A (en) | Superheated-steam drying system and process | |
| CN202041044U (en) | Spray drying waste heat recycling device | |
| CN105021015A (en) | Superhigh-temperature heat pump drying system | |
| CN206695531U (en) | A kind of drying system for gypsum production line | |
| CN107120947B (en) | Hot air superheated steam drying system | |
| CN204902523U (en) | Super high temperature heat pump drying system | |
| CN106500492A (en) | Water circulation type function of mechanical steam recompression MVR drying systems and its method | |
| CN103017501A (en) | Wet object drying method and wet object drying device | |
| CN203704603U (en) | Mechanical vapor recompression based drying device | |
| CN203586725U (en) | Fermented forage drying device | |
| CN107314621A (en) | A kind of method for microwave drying and its device of use | |
| CN207351093U (en) | A kind of hot wind flow-through type drying box | |
| CN204165372U (en) | Combined steam decompression cycles multilevel drying system | |
| CN107218775A (en) | A kind of hot blast flow-through type drying box | |
| CN204944060U (en) | A kind of complete living beings drying plant | |
| CN204594141U (en) | A kind of for timber rotary cut venner combined type drying unit | |
| CN209445716U (en) | A kind of direct-injection type hot air seasoning equipment | |
| CN210569586U (en) | Drying-machine is used in anticorrosive panel processing | |
| CN104359304B (en) | Combined steam decompression cycles multilevel drying system | |
| CN202786549U (en) | Oven-drying and adjusting device for viscose fibers | |
| CN207280152U (en) | A kind of partial air dehumidifying Analysis of Heat Pump Drying System for high temperature production technology | |
| CN204678679U (en) | A kind of used heat reuse hot-cast socket type air-heater | |
| CN113137612A (en) | Device and method for drying household garbage through steam heating with gas circulation | |
| CN105466163B (en) | A kind of vegetables low temperature molecular dehydration energy saving drying equipment | |
| CN205222979U (en) | Sludge drying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20190802 Termination date: 20210620 |