CN105157358A - Energy-saving vacuum drying technique and system - Google Patents
Energy-saving vacuum drying technique and system Download PDFInfo
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- CN105157358A CN105157358A CN201510585078.9A CN201510585078A CN105157358A CN 105157358 A CN105157358 A CN 105157358A CN 201510585078 A CN201510585078 A CN 201510585078A CN 105157358 A CN105157358 A CN 105157358A
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- vacuum drier
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- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses an energy-saving vacuum drying technique and system. After the material enters a vacuum drier, steam from a heat exchanger enters the vacuum drier, and the material is dried in the low-pressure low-temperature state; secondary steam discharged from the vacuum drier is pressurized by an injection pump in an injection pump system to enter the heat exchanger and perform heat exchange with a heat medium condensation water; the heat medium condensation water is heated to form saturated steam, and the saturated steam enters the vacuum drier to implement the material drying process as the heat medium; after the steam enters the vacuum drier to heat the material, the steam is condensed into water, the high-temperature condensation water enters the heat exchanger to perform heat exchange with the steam spilled from the injection pump system in the heat exchanger and is heated into steam, and the steam enters the vacuum drier to circulate, thereby completing the drying of the material. The energy-saving vacuum drying technique and system disclosed by the invention recover the drying residual heat, and perform sufficient gradient utilization on the heat. The whole system has the advantages of high heat efficiency, sufficient heat utilization and low energy consumption.
Description
Technical field
The present invention relates to technical field of drying, be specifically related to a kind of energy-saving type vacuum drying process and system.
Background technology
Vacuum drying has many advantages compared with other drying means: time under low pressure dry, oxygen content is low, can prevent dried material oxidation deterioration, can dry inflammable and explosive dangerous material; The moisture in material can be made at low temperatures to vaporize, be easy to dry heat sensitive material; Valuable and the useful composition in dried material can be reclaimed; The discharge of poisonous and harmful substance in dried material can be prevented, " green " that can become environmental protection type is dry, and its major defect is the vacuum system needing a set of steam that can draw water, such that energy consumption is high, equipment investment expense is large, running expense is high, production efficiency of equipment is low, output is little.But because of the many obvious advantage of institute's tool, vacuum drying obtains a wide range of applications in fields such as food, chemical industry, grains.
Summary of the invention
For solving the deficiency that prior art exists, the invention discloses a kind of energy-saving type vacuum drying process and system, the present invention adopts vacuum dehydrating at lower temperature and after drying device, reclaims the heat of indirect steam, and improve the efficiency of energy utilization of system, system rate of drying is large, energy consumption is low.
For achieving the above object, concrete scheme of the present invention is as follows:
A kind of energy-saving type vacuum drying process, comprises the following steps:
After material enters vacuum drier, the saturated vapor from heat exchanger enters vacuum drier, and material dehydrates under low-pressure low-temperature state;
After saturated vapor enters vacuum drier heated material, saturated vapor is condensed into water, and high-temperature condensation water enters heat exchanger;
The indirect steam that in vacuum drier, material moisture evaporation produces is by the injected liquid ejecting of jet pump system, after jet pump pressurization, temperature raises, then overflow from atomizing of liquids as water vapor, be separated with atomizing of liquids, steam enters heat exchanger heating heating agent condensed water, heating agent condensed water is heated rear formation saturated vapor and is entered vacuum drier, completes the dry run of material as heating agent.
Further, vacuum drier is inner, and pressure maintains-0.092--0.098MPa.Vacuum drier, with tracing system, is enabled during start.The pressure setting of vacuum drier is convenient to material and is dehydrated under low-pressure low-temperature.
Further, installed heater in jet pump system, before vacuum drier start, industrial exhaust heat or Electric heating heated spray liquid can be adopted to assigned temperature, after vacuum drier runs, heater is stopped using.The safe operation of whole system is convenient in the installation of heater, and the ruuning situation according to system determines whether heater, ensure that the stability of system.
Further, jet pump system atomizing of liquids temperature is higher than 100 DEG C, and indirect steam, after jet pump injection, mixes with atomizing of liquids, is forced into after playpipe outlet back pressure overflows in the form of water vapour through jetting fluid, enters heat exchanger heating heat medium water.Better make use of the waste heat of vacuum desiccator discharge by increasing jet pump system, producing saturated vapor and being back to vacuum desiccator again, being convenient to recycling of energy.
Further, material enters vacuum drier by feeding device, inner at vacuum drier, when temperature of charge rises to about 70 DEG C, dehydrates in a low voltage state, and dried material water ratio reduces.
A kind of energy-saving type vacuum drying system, comprise vacuum drier, the entrance of vacuum drier inner-heating tube is connected with the outlet of heat exchanger by pipeline, the outlet of vacuum drier inner-heating tube is connected with the entrance of heat exchanger by pipeline, an outlet of vacuum drier is connected with jet pump system, the indirect steam that in vacuum drier, material moisture evaporation produces is by the injected liquid ejecting of jet pump system, after jet pump pressurization, temperature raises, then overflow from atomizing of liquids as water vapor, be separated with atomizing of liquids, steam enters heat exchanger heating heat medium water, heating agent condensed water is heated rear formation saturated vapor and is entered vacuum drier.
Described jet pump system comprises jet pump, pump and heater, and vacuum drier is connected with jet pump, and jet pump is connected with pump, and jet pump is all connected with heater with pump, is provided with heater in heater.
Beneficial effect of the present invention:
The present invention utilizes jet pump to recompress secondary vapour, and improve waste heat taste, effectively can reclaim the latent heat of secondary vapour, thermal loss is little, and system thermal efficiency is high.
The energy-saving type vacuum drying process that the present invention proposes and system, recycle dry waste heat, in systems in which, fully carry out cascade utilization to heat, the whole system thermal efficiency is high, Btu utilization is abundant, system energy consumption is low.
Accompanying drawing explanation
Fig. 1 overall structure schematic diagram of the present invention;
In figure, 1-vacuum drier, 2-heat exchanger, 3-jet pump system, 4-jet pump, 5-pump, 6-heater.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is described in detail:
In Fig. 1, a kind of energy-saving type vacuum drying system comprises at least 1 vacuum drier 1, heat exchanger 2 and 1 and overlaps jet pump system 3.
A kind of energy-saving type vacuum drying process, comprising:
A. material enters vacuum drier by feeding device, inner at vacuum drier, when temperature of charge rises to about 70 DEG C, dehydrates in a low voltage state, and dried material water ratio reduces.
B., after steam enters drying machine heated material, steam-condensation is water, and high-temperature condensation water enters heat exchanger, heat exchange is carried out with steam (water vapour that jet pump system overflows) in heat exchanger, generated water vapour by heating, water vapour enters vacuum drier circulation, completes the drying of material.
C. the indirect steam that in vacuum drier, material moisture evaporation produces is by the injected liquid ejecting of jet pump, and after jet pump pressurization, temperature raises, and then overflows from atomizing of liquids with the form of saturated steam, is separated with atomizing of liquids.
Inner at vacuum drier 1, pressure maintains-0.092--0.098MPa, and after material enters vacuum drier 1 by feeding device, temperature of charge raises, and dehydrates in a low voltage state.
Vacuum drier 1 mode of heating is internal heat type, after steam enters drying machine 1 heated material, steam-condensation is water, high-temperature condensation water enters heat exchanger 2, heat exchange is carried out with steam (water vapour that jet pump system 3 overflows) in heat exchanger 2, generated saturated vapor by heating, water vapour enters vacuum drier 1 and circulates, and completes the drying of material.
The indirect steam that in vacuum drier 1, material moisture evaporation produces is overflowed injection liquid by jet pump 4 in the form of water vapour by after high-temperature injection liquid ejecting, enters heat exchanger 2 and carries out heat exchange with heat medium water.
Heating agent condensed water is heated rear formation saturated vapor and is entered vacuum drier 1, completes the dry run of material as heating agent.
The core apparatus of this technique adopts vacuum drier 1, and heating agent is water vapour.Under negative pressure of vacuum condition, the boiling point of water reduces, and water evaporates at low temperatures.Vacuum drying solves a difficult problem for some material difficulty dehydration, the problem that the heat-sensitive ingredients simultaneously avoiding some material at high temperature volatilizees.Installed heater 6 in jet pump system 3, can adopt the mode such as industrial exhaust heat or electrical heating heated spray liquid when system boot, after system is normally run, heater 6 is stopped using.Jet pump system 3 atomizing of liquids temperature is higher than 100 DEG C, and indirect steam, after jet pump injection, mixes with atomizing of liquids, is forced into after playpipe outlet back pressure and overflows system with the form of saturated vapor, enter heat exchanger 2 and heat heat medium water through jetting fluid.
There is heat exchanger tube vacuum drier 1 inside, and vacuum drier 1 is connected with jet pump system 3, and after the injected liquid ejecting heating of the indirect steam that vacuum drier 1 produces, steam and heating agent heat exchange, reclaimed the heat of secondary vapour.
Jet pump system 3 comprises jet pump 4, and pump 5, heater 6 etc., atomizing of liquids is high boiling liquid.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (7)
1. an energy-saving type vacuum drying process, is characterized in that, comprises the following steps:
After material enters vacuum drier, the saturated vapor from heat exchanger enters vacuum drier, and material dehydrates under low-pressure low-temperature state;
After saturated vapor enters vacuum drier heated material, saturated vapor is condensed into water, and high-temperature condensation water enters heat exchanger;
The indirect steam that in vacuum drier, material moisture evaporation produces is by the injected liquid ejecting of jet pump system, after jet pump pressurization, temperature raises, then overflow from atomizing of liquids as water vapor, be separated with atomizing of liquids, steam enters heat exchanger heating heating agent condensed water, heating agent condensed water is heated rear formation saturated vapor and is entered vacuum drier, completes the dry run of material as heating agent.
2. a kind of energy-saving type vacuum drying process as claimed in claim 1, is characterized in that, vacuum drier is inner, and pressure maintains-0.092--0.098MPa.
3. a kind of energy-saving type vacuum drying process as claimed in claim 1, is characterized in that, installed heater in jet pump system, before vacuum drier start, adopt industrial exhaust heat or Electric heating heated spray liquid to assigned temperature, after vacuum drier runs, heater is stopped using.
4. a kind of energy-saving type vacuum drying process as described in claim 1 or 3, it is characterized in that, jet pump system atomizing of liquids temperature is higher than 100 DEG C, indirect steam is after jet pump injection, mix with atomizing of liquids, be forced into after playpipe outlet back pressure through jetting fluid and overflow in the form of water vapour, enter heat exchanger heating heat medium water.
5. a kind of energy-saving type vacuum drying process as claimed in claim 1, it is characterized in that, material enters vacuum drier by feeding device, inner at vacuum drier, when temperature of charge rises to 70 DEG C, dehydrate in a low voltage state, dried material water ratio reduces.
6. an energy-saving type vacuum drying system, it is characterized in that, comprise vacuum drier, the entrance of vacuum drier is connected with the outlet of heat exchanger by pipeline, an outlet of vacuum drier is connected with the entrance of heat exchanger by pipeline, another outlet of vacuum drier is connected with jet pump system, the indirect steam that in vacuum drier, material moisture evaporation produces is by the injected liquid ejecting of jet pump system, after jet pump pressurization, temperature raises, then overflow from atomizing of liquids with the form of saturated steam, be separated with atomizing of liquids, saturated steam enters heat exchanger heating heat medium water, heating agent condensed water is heated rear formation saturated vapor and is entered vacuum drier.
7. a kind of energy-saving type vacuum drying system as claimed in claim 6, it is characterized in that, described jet pump system comprises jet pump, pump and heater, vacuum drier is connected with jet pump, jet pump is connected with pump, and jet pump is all connected with heater with pump, is provided with heater in heater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510585078.9A CN105157358A (en) | 2015-09-15 | 2015-09-15 | Energy-saving vacuum drying technique and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510585078.9A CN105157358A (en) | 2015-09-15 | 2015-09-15 | Energy-saving vacuum drying technique and system |
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| CN105157358A true CN105157358A (en) | 2015-12-16 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108699758A (en) * | 2016-02-12 | 2018-10-23 | Bsh家用电器有限公司 | Household appliance and method for running household appliance |
| CN113639533A (en) * | 2021-08-27 | 2021-11-12 | 浙江同景冻干科技有限公司 | Low pressure superheated steam drying system and method |
| CN114001525A (en) * | 2021-11-11 | 2022-02-01 | 北京丰钰能源科技有限公司 | High-efficient dehydration drying system and dehydration indirect heating equipment |
| CN115031498A (en) * | 2022-06-02 | 2022-09-09 | 大连海事大学 | Sea cucumber vacuum drying system based on steam ejector |
| CN115682641A (en) * | 2022-11-01 | 2023-02-03 | 海南优联生态环境有限公司 | Drying machine |
| CN115682640A (en) * | 2022-10-12 | 2023-02-03 | 孙聪 | Energy-saving grain vacuum drying technology |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1562644A1 (en) * | 1988-06-13 | 1990-05-07 | Кубанский Филиал Всесоюзного Научно-Производственного Объединения По Элеваторной И Мукомольно-Крупяной Промышленности "Зернопродукт" | Drying installation |
| CN2192855Y (en) * | 1994-03-02 | 1995-03-22 | 陈启松 | Full-efficiency dehydrator |
| CN101968299A (en) * | 2010-10-29 | 2011-02-09 | 武善东 | Method for drying materials by utilizing superheated steam |
| CN102494525A (en) * | 2011-12-15 | 2012-06-13 | 石家庄工大化工设备有限公司 | Process utilizing steam jet pump to recover waste heat of exhaust gas of dryer indirectly |
| 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 |
| CN203058203U (en) * | 2012-12-28 | 2013-07-17 | 北京天达京丰技术开发有限公司 | Evaporated steam recovery recycling equipment system |
| CN204944055U (en) * | 2015-09-15 | 2016-01-06 | 山东天力干燥股份有限公司 | A kind of energy-saving type vacuum drying system |
-
2015
- 2015-09-15 CN CN201510585078.9A patent/CN105157358A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1562644A1 (en) * | 1988-06-13 | 1990-05-07 | Кубанский Филиал Всесоюзного Научно-Производственного Объединения По Элеваторной И Мукомольно-Крупяной Промышленности "Зернопродукт" | Drying installation |
| CN2192855Y (en) * | 1994-03-02 | 1995-03-22 | 陈启松 | Full-efficiency dehydrator |
| CN101968299A (en) * | 2010-10-29 | 2011-02-09 | 武善东 | Method for drying materials by utilizing superheated steam |
| CN102494525A (en) * | 2011-12-15 | 2012-06-13 | 石家庄工大化工设备有限公司 | Process utilizing steam jet pump to recover waste heat of exhaust gas of dryer indirectly |
| 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 |
| CN203058203U (en) * | 2012-12-28 | 2013-07-17 | 北京天达京丰技术开发有限公司 | Evaporated steam recovery recycling equipment system |
| CN204944055U (en) * | 2015-09-15 | 2016-01-06 | 山东天力干燥股份有限公司 | A kind of energy-saving type vacuum drying system |
Non-Patent Citations (2)
| Title |
|---|
| 国家机械工业局行业管理司等: "《中国机电产品大辞典》", 30 September 1999 * |
| 天津电炉厂技术组: "《电炉真空系统的计算与设计》", 31 December 1972 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108699758A (en) * | 2016-02-12 | 2018-10-23 | Bsh家用电器有限公司 | Household appliance and method for running household appliance |
| CN108699758B (en) * | 2016-02-12 | 2020-09-11 | Bsh家用电器有限公司 | Household appliance and method for operating a household appliance |
| CN113639533A (en) * | 2021-08-27 | 2021-11-12 | 浙江同景冻干科技有限公司 | Low pressure superheated steam drying system and method |
| CN114001525A (en) * | 2021-11-11 | 2022-02-01 | 北京丰钰能源科技有限公司 | High-efficient dehydration drying system and dehydration indirect heating equipment |
| CN114001525B (en) * | 2021-11-11 | 2023-09-22 | 北京丰钰能源科技有限公司 | Efficient dehydration drying system and dehydration heat exchange equipment |
| CN115031498A (en) * | 2022-06-02 | 2022-09-09 | 大连海事大学 | Sea cucumber vacuum drying system based on steam ejector |
| CN115682640A (en) * | 2022-10-12 | 2023-02-03 | 孙聪 | Energy-saving grain vacuum drying technology |
| CN115682641A (en) * | 2022-11-01 | 2023-02-03 | 海南优联生态环境有限公司 | Drying machine |
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Application publication date: 20151216 |