CN102435047A - Direct drying method - Google Patents
Direct drying method Download PDFInfo
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- CN102435047A CN102435047A CN2010105051266A CN201010505126A CN102435047A CN 102435047 A CN102435047 A CN 102435047A CN 2010105051266 A CN2010105051266 A CN 2010105051266A CN 201010505126 A CN201010505126 A CN 201010505126A CN 102435047 A CN102435047 A CN 102435047A
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- drying
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- water vapor
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Abstract
The invention discloses a direct drying method, and relates to the technical field of machining equipment, in particular to the technical field of drying. After the heat of a material to be dried is absorbed in a drying chamber and the water vapor is evaporated, the material is dried; and after the water vapor evaporated from the drying chamber is compressed and heated by a compressor, the water vapor enters a heating coil placed in the drying chamber and is condensed to release heat, and the released heat is used for heating the dried material. According to the method, the dried material is subjected to heat exchange by fully using the high temperature formed after the water vapor is compressed and heated, so by the self-circulating exchange mode, the energy consumption in the industrial production can be greatly reduced, the energy is saved, the investment is saved, and the operating cost is reduced. The direct drying method based on mechanical recompression of the vapor can be applied to drying of materials.
Description
Technical field
The present invention relates to machining equipment technical field, particularly technical field of drying.
Background technology
At present, nearly all industrial circle all has dry this link of heating power, and especially in industries such as chemical industry, food and medicine, drying is extremely important.The dry quality that can keep and improve required material handling helps storage and processing; Can make the moisture of material be reduced to not perishable situation, thereby reduce the loss.In addition, dried material, owing to be convenient to transportation and storage, thus improved its economic worth, have sizable development space.Dry materials belongs to the high energy consumption industry, and according to statistics, the whole world has the energy of 10%-25% to be used for industrial heating power dry run, and in China, the required energy of industrially drying accounts for about 12% of national economy total energy consumption.Simultaneously, in the dry industry also ubiquity the low situation of the thermal efficiency, be example with the drying of wood, its thermal efficiency is merely 30%-40%.With regard at present domestic, advanced dry technology especially the energy-saving drying technology in commercial production, use also fewer, in the widest various conventional drying equipment of application, having more than 3/4 is heated-air drying.Because the thermal source that heated-air drying adopts is middle and small burn coal boiler or hot-blast stove basically; The overwhelming majority does not have desulfurization and reliable cleaner; The thermal efficiency low (thermal efficiency less thaies 75% of many coal-fired hot-blast stoves) not only, and seriously polluted (producing a large amount of dusty gas and dust).Already used advanced technology of other some such as superheat steam drying and heat pump drying also come with some shortcomings; Superheat steam drying can not have gas to leak; Feeding and discharging can not be free air infiltration to go into; This just needs Packed feed system and discharge system, in order to reach purpose of energy saving corresponding gas sampling system will be arranged also, so complex equipments, expense are high.Simultaneously, because some material may cause equipment corrosion and corrosion, therefore require also higher to equipment and materials.The complexity of equipment has also caused the raising of maintenance cost.The heat pump drying system then needs to add in addition a cover cooling cycle system, and cost is higher relatively and need regular maintenance and maintenance.Therefore, seek a kind of compact conformation, energy-efficient advanced dry technology has crucial meaning.
Summary of the invention
The purpose of this invention is to provide a kind of extra steam, easy to operate, energy-efficient, drying means that operating cost is low of need not.
Technical scheme of the present invention is: material to be dried absorbs heat of vaporization and goes out behind the water vapour and obtain drying in hothouse; The self-desiccation chamber is evaporated the said water vapour entering after compressor boosts intensification that and is placed the heat(ing) coil condensation heat release in the hothouse, and institute's liberated heat is used for the heat drying material.
The present invention makes full use of heat up through the boosting high temperature of back formation of water vapour, and dried material is carried out the exchange of heat, and the exchanged form of this self-loopa can reduce the energy consumption in the commercial production greatly, energy savings, reduces investment outlay, reduces operating cost.The present invention is a kind of convection drying method based on the recompression of steam machinery, can be applicable to the drying to material.
Temperature in the above hothouse of the present invention is 50～80 ℃.That is to say that the steam temperature that is boosted in the heat(ing) coil after heating up by compressor can rise to 50～80 ℃, can be used for the drying to material.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
The specific embodiment
Heat(ing) coil 5 of the present invention is arranged in the hothouse 4, and the top of hothouse 4 is provided with filter, and like filter screen 3, hothouse 4 sides are provided with charging aperture 2, and the top of hothouse 4 and bottom are provided with steam outlet 15 and dried material discharging opening 6 respectively.Water circulating vacuum pump 1 is connected the bottom of hothouse 1 through valve 1 and pipeline; The entrance point of said compressor 8 is connected with steam outlet 15 through pipeline, valve 7; The port of export of compressor 8 is connected an end of heat(ing) coil 5 through pipeline, valve 9; Other end siphunculus valve 10, the pipeline of heat(ing) coil 5 are connected with drainer 11, and the other end of drainer 11 is connected with lime set water pump 13 through valve 12, pipeline.
Drying process principle of the present invention is:
Raw material is in charging aperture 2 is loaded into hothouse 4; Raw material absorbs in temperature is 50～80 ℃ of hothouses 4 and evaporates water vapour by heat(ing) coil 5 liberated heats, and water vapour is removed impurity after valve through filter screen 3) get into compressor 8, increasing temperature and pressure is after valve 9 gets into heat(ing) coil 5; The water vapour condensation is emitted heat and is formed condensed water in heat(ing) coil 5; Condensed water gets into lime set jar 11 through valve 10, again through valve 12, is discharged by lime set water pump 13.Dried material is derived by discharging opening 6.Water circulating vacuum pump 1 links to each other with hothouse 4 bottoms to keep system pressure and to discharge incoagulable gas.
Claims (2)
1. convection drying method; It is characterized in that: material to be dried absorbs heat of vaporization and goes out behind the water vapour and obtain drying in hothouse; The self-desiccation chamber is evaporated the said water vapour entering after compressor boosts intensification that and is placed the heat(ing) coil condensation heat release in the hothouse, and institute's liberated heat is used for the heat drying material.
2. drying means according to claim 1 is characterized in that: the temperature in the said hothouse is 50～80 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105051266A CN102435047A (en) | 2010-09-29 | 2010-09-29 | Direct drying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105051266A CN102435047A (en) | 2010-09-29 | 2010-09-29 | Direct drying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102435047A true CN102435047A (en) | 2012-05-02 |
Family
ID=45983258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105051266A Pending CN102435047A (en) | 2010-09-29 | 2010-09-29 | Direct drying method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102435047A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0063708A1 (en) * | 1981-04-06 | 1982-11-03 | Appareils Et Evaporateurs Kestner | Process for economic drying, and apparatus for carrying it out |
| CN2893592Y (en) * | 2005-04-21 | 2007-04-25 | 陕西科技大学 | Energy-saving rotary drum drying device |
| CN201364001Y (en) * | 2009-03-09 | 2009-12-16 | 钱国新 | Composite source heat pump drier |
| CN201429259Y (en) * | 2009-07-08 | 2010-03-24 | 郑州中南科莱空调设备有限公司 | Evaporative cooling water unit with function of heat recovery |
-
2010
- 2010-09-29 CN CN2010105051266A patent/CN102435047A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0063708A1 (en) * | 1981-04-06 | 1982-11-03 | Appareils Et Evaporateurs Kestner | Process for economic drying, and apparatus for carrying it out |
| CN2893592Y (en) * | 2005-04-21 | 2007-04-25 | 陕西科技大学 | Energy-saving rotary drum drying device |
| CN201364001Y (en) * | 2009-03-09 | 2009-12-16 | 钱国新 | Composite source heat pump drier |
| CN201429259Y (en) * | 2009-07-08 | 2010-03-24 | 郑州中南科莱空调设备有限公司 | Evaporative cooling water unit with function of heat recovery |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120502 |