CN101799236A - Heat pump carrier gas flow-through type continuous drying equipment - Google Patents
Heat pump carrier gas flow-through type continuous drying equipment Download PDFInfo
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- CN101799236A CN101799236A CN201010124568A CN201010124568A CN101799236A CN 101799236 A CN101799236 A CN 101799236A CN 201010124568 A CN201010124568 A CN 201010124568A CN 201010124568 A CN201010124568 A CN 201010124568A CN 101799236 A CN101799236 A CN 101799236A
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- heat pump
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
Abstract
The invention discloses a heat pump carrier gas flow-through type continuous drying equipment which is composed of a drying tower, a heat pump system and a circulating system, wherein the circulating system couples the drying tower and the heat pump system which continuously charges and discharges into a whole capable of continuously operating, and material is dried by circulating carrier gas heated by the heat pump system in the continuous flowing-in and flowing-out processes from a high-pressure rotary valve on the top and the bottom of the drying tower. The invention utilizes the heat pump system to provide a heat source in the drying process so as to effectively lower energy consumption and improve equipment operation economy. The equipment can cool carrier gas by the heat pump system in the operation process, can recycle high-value volatility components contained in the drying material and enlarge equipment application range.
Description
Technical field
The invention belongs to chemical field, particularly a kind of heat pump carrier gas flow-through type continuous drying equipment that is applicable to graininess or powder material.
Background technology
In Chemical Manufacture, drying is often referred to the wet solid material of heating such as hot-air, flue gas, microwave and infrared ray, and make the vaporization of wherein contained moisture or solvent and remove, be a kind of unit operations that belongs to the caloic transmittance process.Drying process is widely used in all departments such as chemical industry, food, light industry, weaving, coal, agriculture and forestry product processing and building materials.Drying process needs very big energy consumption, and Italian scientist studies show that, the energy resource consumption of the dry processing of paddy rice accounts for 64% of Rice Production processing total energy consumption.Serious day by day along with global energy, resource problem more and more comes into one's own for the energy-conservation research of drying process.Heat pump drying technology is exactly a kind of novel dried technology that grows up under this background.
Heat pump drying technology is compared with other dry technologies has the considerable energy saving characteristic.The another one distinguishing feature of heat pump drying technology is that its baking temperature is low, has the unique low-temperature dehumidification function, can under lower temperature, carry out drying and can make the final moisture content of material drop to extremely low level, be specially adapted to the drying processing of some thermal sensitivity products material.The utility model of patent No. ZL200820220667.2 discloses a kind of pump type heat vacuum continuous drying equipment.This invention is used for heat pump the continuous drying process of grain, reduced energy consumption, realized the continued operation of dry run, but this design is a working media with heat pump to be passed through in the coil pipe in the drying tower and by the mode of transmission of heat by contact material is carried out drying process.This design need be used a large amount of heat pump working medias, and the coil pipe use amount is big, and complex structure is unfavorable for the maintenance and the maintenance of equipment, and effective working volume of drier is reduced, and increases the volume of drying tower.
Summary of the invention
[goal of the invention] drying is the great unit operations of a kind of power consumption, in order to reduce energy consumption for drying, develops very necessity of new dry technology.Heat pump techniques is exactly a kind of very potential power-saving technology.The present invention combines heat pump techniques and drying process dexterously by the circulation carrier gas, has both effectively utilized the power savings advantages of heat pump techniques, and the characteristics of inheriting tradition drying process again make that dry run reaches energy-conservation, the scope of application wide and operate continuous requirement.
[design of the present invention] traditional drying equipment generally has tray dryer, belt dryer, pneumatic conveyer dryer, fluidized bed dryer, revolving drier, spray dryer and drum dryer etc.The drier that is applicable to the granular material drying has pneumatic conveyer dryer, revolving drier, fluid-bed dryer and tray dryer.Though the drying effect of these driers is better, energy consumption is generally higher.Heat pump techniques and drying process combined then might effectively reduce dry energy consumption, but the deciding factor of the efficient height that but is formed drying equipment of how heat pump and drying process being combined.The present invention combines the advantage that heat pump techniques, gas are carried distillation technique and pneumatic conveyer dryer, makes continuous, the recyclable volatile materials of dry run, and is energy-saving and cost-reducing simultaneously.
[technical solution of the present invention] essential structure of the present invention such as accompanying drawing 1:
Material to be dried rises to charging aperture 1 from elevator 6 and enters by high-pressure rotary valve 3 and carry out drying the drying tower, high-pressure rotary valve 3 is installed in the import and the outlet of drying tower 4, air-tightness for the tower 4 that keeps dry, mode by series connection, can two high-pressure rotary valves 3 be installed respectively in import and outlet, the high-pressure rotary valve of being installed 3 keeps suitable rotating speed to guarantee the coordination of charging rate and discharging speed.After material enters in the drying tower 4, be subjected to the control of deflection plate 5 and in drying tower, carry out z shape and flow, flow to tower from cat head at the bottom of, in process of flowing, carry and come to heat carrier gas material is heated from heat pump condenser 9, the water evaporates that makes in the material to be contained, thereby dried material.The carrier gas that humidity increases is taken away and is sent into the evaporator with heat pump 8 by roots blower 7 from the top of drying tower 4 and cools off, moisture in the carrier gas and other effumability compositions cool off in evaporator with heat pump 8 and obtain cooling fluid 12, according to the composition of cooling fluid 12, cooling fluid 12 can be used as dry byproduct or be discharged.Cooled carrier gas enters heat pump condenser 9 subsequently heats, and the circulation bottom that enters drying tower 4 is used for the drying of material.According to what of the thermal sensitivity of material and water content, the temperature of regulating carrier gas by the running parameter of regulating heat pump compressor 10 and choke valve 11, regulate the flow of carrier gas by regulating roots blower 7, just can well adapt to different materials by these adjustings.
The present invention has following characteristics and advantage:
1. drying tower is simple in structure, and there is not mechanical moving element in inside, has increased the global reliability of equipment, by the charging of high-pressure rotary valve and the discharging of series connection, has really realized the continuity of dry run;
2. the design by deflection plate in the drying tower, make in the flow process of material in drying tower more even with contacting of carrier gas, the direct design of flowing in material to be dried of drying medium (carrier gas) simultaneously makes both heat transfer coefficients bigger, increased heat transfer efficiency, the temperature of carrier gas is free adjustment in the larger context, thereby can adapt to the drying of various materials;
3. that dry run has been realized is continuous, energy-conservation and efficient in the coupling of carrying distillation technique and drying process by heat pump techniques, gas, the introducing of gas distillation notion is held concurrently dry run and is born the effect that the high price volatile materials reclaims, further reduced the running cost of drying process, only use electric energy in the dry run, contamination-free discharges in the whole process, improved the economy of process, minimum to the influence of environment.
Description of drawings
Fig. 1 heat pump continuous drying equipment structural representation, 1, charging aperture; 2, discharging opening; 3, the high-pressure rotary valve; 4, drying tower; 5, deflection plate; 6, elevator; 7, roots blower; 8, evaporator with heat pump; 9, heat pump condenser; 10, heat pump compressor; 11, choke valve; 12, cooling fluid.
The specific embodiment
The present invention will be further described below by embodiment.
Embodiment 1
Carry out the drying of vinasse with equipment disclosed in this invention.Vinasse are important by-products that liquor is produced, and the output of vinasse has reached 1,500 ten thousand tons according to statistics.In the face of quantity huge resource like this, China has carried out a large amount of research to this, for example, utilize vinasse to cultivate edible mushroom, extract compound amino acid and trace element, extract phytic acid and phytic acid calcium, extract protein, produce amylase or cellulase, utilize the vinasse anaerobic fermentation to reclaim biogas, produce forage protein, produce GABA etc.Although so multi-method is arranged, at present the utilization rate of vinasse is still not high, and it is lower that the restrictive factor that restriction vinasse resource makes full use of is that aquatic foods are lost poor pH, and moisture height (more than 60%) is putrid and deteriorated easily, is unfavorable for preserving and long-distance transport.The vinasse drying will be produced significant effects to the utilization of vinasse.And traditional drying mode the more adopts flue gas etc. to carry out drying, and the thermal efficiency is lower.In addition also contain some valuable ingredients in the vinasse, these compositions just comprise the fragrance matter that produces in the brewed spirit process.It mainly is ethyl hexanoate that the wine body note pneumatolytic that fermentation produces in the wine unstrained spirits divides, but traditional distillating method is low to the harvest rate of fragrance matter, with aroma wine production is example, and its distillation is lower than 10% to the harvest rate of ethyl hexanoate, therefore these materials is reclaimed and will be necessary.
With volume is 5m
3Heat pump carrier gas flow-through type continuous drying equipment moisture 60% vinasse are carried out drying, the drying tower diameter that is adopted is 1m, highly is 6.5m, 6 deflection plates of inner installation, setting angle is 30 °, configuration SL80WD roots blower (power of motor 7.5kw), and carrier gas flux is 15m
3/ min is equipped with corresponding heat pump, and the inlet temperature of regulating carrier gas (carbon dioxide) is 80-85 ℃, and chilling temperature is 4-6 ℃, and the rate of drying of material is 1 ton of wet vinasse/sky, and the power of heat pump is 10kW/h, and the water content of outlet logistics is 15%.Vinasse reclaim low-concentration ethanol and the fragrance matter in the vinasse simultaneously in dry run, 1 ton of vinasse can reclaim 0.53 ton vinasse wine.
Embodiment 2
Carry out the drying of wheat with equipment disclosed in this invention.With volume is 5m
3Heat pump carrier gas flow-through type continuous drying equipment moisture 17% wheat is carried out drying, the drying tower diameter that is adopted is 1.14m, highly is 5m, 5 deflection plates of inner installation, setting angle is 35 °, configuration SL80WD roots blower (power of motor 7.5kw), and carrier gas flux is 15m
3/ min is equipped with corresponding heat pump, and the inlet temperature of regulating carrier gas (air) is 47-50 ℃, and chilling temperature is 4-6 ℃, and the rate of drying of material is 15 tons of wheat/skies, and the power of heat pump is 5kW/h, and the water content of outlet wheat is 12.5%.
Claims (7)
1. heat pump carrier gas flow-through type continuous drying equipment: by drying tower 4, heat pump 8,9 are coupled to form with the carrier gas circulatory system 7 that is connected both, by being installed in the series connection high-pressure rotary valve 3 of drying tower top and bottom, the material that is dried enters from the top continuously, the carrier gas of being heated by heat pump drying, dry back continuous discharging from the bottom, heating enters periodic duty in the drying tower 4 once more in the cooling tower 9 that enters heat pump after dewatering that is cooled in the evaporating column 8 of the carrier gas of using in dry run in heat pump.
2. heat pump carrier gas flow-through type continuous drying equipment as claimed in claim 1 is characterized in that, described drying tower is a column, and ratio of height to diameter is 5: 1-20: 1.
3. heat pump carrier gas flow-through type continuous drying equipment as claimed in claim 1 is characterized in that, establishes deflection plate in the described drying tower, and number of baffles is the 3-15 piece, and the axis of deflection plate and drier is arranged with 30 °-45 ° angle.
4. heat pump carrier gas flow-through type continuous drying equipment as claimed in claim 1 is characterized in that, described drier top and bottom are installed 1 or 2-3 high-pressure rotary valve is installed with the seal of tower in dry run that keep dry with series system.
5. heat pump carrier gas flow-through type continuous drying equipment as claimed in claim 1 is characterized in that, described carrier gas is the combination of air, carbon dioxide, nitrogen or above-mentioned gas.
6. heat pump carrier gas flow-through type continuous drying equipment as claimed in claim 1 is characterized in that, the described carrier gas circulatory system is driven by roots blower.
7. heat pump carrier gas flow-through type continuous drying equipment as claimed in claim 1 is characterized in that, described carrier gas temperature is 40 ℃-90 ℃.
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CN201010124568A CN101799236A (en) | 2010-03-16 | 2010-03-16 | Heat pump carrier gas flow-through type continuous drying equipment |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104315823A (en) * | 2014-10-23 | 2015-01-28 | 府谷县奥维加能焦电化工有限公司 | Semi coke dewatering device and method |
CN105020985A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Heat pump type tail heat utilization penetrating reverse flow fluidized drying machine |
CN106482453A (en) * | 2016-12-19 | 2017-03-08 | 天津商业大学 | A kind of continuous type heat pump vacuum drier |
CN106546091A (en) * | 2015-12-24 | 2017-03-29 | 广东展翠食品股份有限公司 | A kind of bergamot fruit drying equipment and its drying meanss |
CN106679393A (en) * | 2017-01-20 | 2017-05-17 | 中国科学院理化技术研究所 | Grain drying system |
CN107917579A (en) * | 2017-12-20 | 2018-04-17 | 江苏仅联合智造有限公司 | A kind of medicine wet granular suspension drying process and equipment |
CN113237317A (en) * | 2021-04-15 | 2021-08-10 | 张木光 | Difficult steam drying equipment for fabrics that blocks up |
CN114347299A (en) * | 2017-02-17 | 2022-04-15 | 保利麦特瑞斯公司 | Method and device for direct crystallization of polycondensates |
CN114963718A (en) * | 2022-06-14 | 2022-08-30 | 陕西科技大学 | Sucrose inert medium drying equipment and working method thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN2030304U (en) * | 1988-03-11 | 1989-01-04 | 商桂电 | Multi-energy resources combined drying device |
CN2888370Y (en) * | 2006-04-05 | 2007-04-11 | 河南金谷实业发展有限公司 | Low-temperature vacuum grain continuous drying apparatus |
CN200989714Y (en) * | 2006-11-15 | 2007-12-12 | 广州普得环保设备有限公司 | Vertical drying device with fluid-bed |
-
2010
- 2010-03-16 CN CN201010124568A patent/CN101799236A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2030304U (en) * | 1988-03-11 | 1989-01-04 | 商桂电 | Multi-energy resources combined drying device |
CN2888370Y (en) * | 2006-04-05 | 2007-04-11 | 河南金谷实业发展有限公司 | Low-temperature vacuum grain continuous drying apparatus |
CN200989714Y (en) * | 2006-11-15 | 2007-12-12 | 广州普得环保设备有限公司 | Vertical drying device with fluid-bed |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104315823A (en) * | 2014-10-23 | 2015-01-28 | 府谷县奥维加能焦电化工有限公司 | Semi coke dewatering device and method |
CN105020985A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Heat pump type tail heat utilization penetrating reverse flow fluidized drying machine |
CN105020985B (en) * | 2015-08-14 | 2018-02-09 | 吉首大学 | Heat-pump-type tail heat utilization penetrates adverse current fluidized dryer |
CN106546091A (en) * | 2015-12-24 | 2017-03-29 | 广东展翠食品股份有限公司 | A kind of bergamot fruit drying equipment and its drying meanss |
CN106482453A (en) * | 2016-12-19 | 2017-03-08 | 天津商业大学 | A kind of continuous type heat pump vacuum drier |
CN106679393A (en) * | 2017-01-20 | 2017-05-17 | 中国科学院理化技术研究所 | Grain drying system |
CN106679393B (en) * | 2017-01-20 | 2022-04-22 | 中国科学院理化技术研究所 | Grain drying system |
CN114347299A (en) * | 2017-02-17 | 2022-04-15 | 保利麦特瑞斯公司 | Method and device for direct crystallization of polycondensates |
CN114347299B (en) * | 2017-02-17 | 2024-03-29 | 保利麦特瑞斯公司 | Method and device for direct crystallization of polycondensates |
CN107917579A (en) * | 2017-12-20 | 2018-04-17 | 江苏仅联合智造有限公司 | A kind of medicine wet granular suspension drying process and equipment |
CN113237317A (en) * | 2021-04-15 | 2021-08-10 | 张木光 | Difficult steam drying equipment for fabrics that blocks up |
CN114963718A (en) * | 2022-06-14 | 2022-08-30 | 陕西科技大学 | Sucrose inert medium drying equipment and working method thereof |
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Application publication date: 20100811 |