CN106166396A - A kind of energy-saving closed cycle spray drying system - Google Patents
A kind of energy-saving closed cycle spray drying system Download PDFInfo
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- CN106166396A CN106166396A CN201610550662.5A CN201610550662A CN106166396A CN 106166396 A CN106166396 A CN 106166396A CN 201610550662 A CN201610550662 A CN 201610550662A CN 106166396 A CN106166396 A CN 106166396A
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- vaporizer
- spray drying
- mixed vapour
- heat exchanger
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- 238000001694 spray drying Methods 0.000 title claims abstract description 27
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- 239000007789 gas Substances 0.000 claims abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 20
- 239000003507 refrigerant Substances 0.000 claims abstract description 14
- 230000000576 supplementary Effects 0.000 claims abstract description 11
- 238000007872 degassing Methods 0.000 claims abstract description 8
- 239000006199 nebulizer Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000006200 vaporizer Substances 0.000 claims description 27
- 239000002002 slurry Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 9
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 9
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- 230000005611 electricity Effects 0.000 claims description 2
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- 238000005516 engineering process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
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- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0082—Regulation; Control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0033—Other features
- B01D5/0036—Multiple-effect condensation; Fractional condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0033—Other features
- B01D5/0039—Recuperation of heat, e.g. use of heat pump(s), compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/006—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/0069—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with degasification or deaeration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/0072—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with filtration
Abstract
The invention discloses a kind of energy-saving closed cycle spray drying system, system includes: vacuum pump, degassing tank, filter, nebulizer, gas content detector, spray drying tower, cyclone separator, air-introduced machine, refrigerant circulation loop, heat exchanger, nitrogen supplementary device and electric heater etc..Drying tower can be discharged the heat of steam and be carried out recycling by the present invention, the organic solution in steam is carried out recycling simultaneously.Closed circuit circulatory system uses high temperature nitrogen as dry gas, can effectively improve product quality, and avoid product in process of production oxidized.
Description
Technical field
The present invention relates to the closed cycle spray drying system of a kind of efficient energy-saving, be particularly well-suited to organic solution slurry,
Belong to technical field of drying.
Background technology
Spray drying technology is La Mont and Percy et al. invention in 19 end of the centurys.This skill of development due to food industry
Art is initially applied to the manufacture of skimmed milk powder, is applied to the food industry such as dairy industry, solid beverage, solid seasoning later,
The most commonly used in detergent industry, pharmaceuticals industry and the industry such as pottery, environmental protection.Nowadays you pass through constantly this technology
Improving and innovation, it is auxiliary with dry that this technology is also applied to different liquids characteristic (such as concentration, viscosity, surface tension etc.) equipment development
The exploitation of auxiliary agent.
Slurry is dispersed into vaporific microgranule to increase moisture evaporation surface by the effect of mechanical force by spray dryer, adds
Fast dry run, after mist particles contact with high temperature air, the moisture of wherein most is removed, dry of generation simultaneously
Granule product, substantially increases production efficiency.But owing to this process water evaporation quantity is huge, produce a large amount of energy expenditure.With hard
As a example by alloy compound produces, wherein with ethanol as solvent, slurry is in spray tower after row hot and humid area, and the steam of generation is
About 94 DEG C, although be not high temperature, but if these heats being carried out recycling can be substantially reduced energy expenditure, and
Recycling to spirit solvent, is the mixture of solid and organic solution owing to making carbide alloy mixture, therefore have must
Develop a kind of novel closed cycle spray drying system.
Summary of the invention
The invention discloses a kind of closed cycle spray drying system, the heat that drying tower can be discharged steam is carried out back
Receive recycling, the organic solution in steam is carried out recycling simultaneously.Closed circuit circulatory system uses high temperature nitrogen as dry
Dryness body, can effectively improve product quality, and avoid product in process of production oxidized.
A kind of energy-saving closed cycle spray drying system, described system includes vacuum pump, degassing tank, filter, atomization
Device, spray drying tower, cyclone separator；Organic solution slurry enters degassing tank by vacuum pump effect, subsequently into filter
Filter, entered the nebulizer of spray drying tower after filtration by vacuum pump effect, by through electrical heating in spray drying tower
Hot blast gas be dried, dried granule and mixed vapour enter cyclone separator, and the product after separation passes through whirlwind
Separator bottom flows out；It is characterized in that: described system also includes that circulating line one, circulating line two and refrigerant cycle are returned
Road；
Described circulating line one includes pressure fan, vaporizer, heat exchanger；
Described circulating line two includes vaporizer, heat exchanger, nitrogen supplementary device, electric heater；
Described refrigerant circulation loop includes vaporizer, compressor, condenser and throttling arrangement；
Described circulating line one, circulating line two and refrigerant circulation loop share vaporizer, described circulating line one and circulation
Pipeline two shares heat exchanger；
The mixed vapour of described cyclone separator enters circulating line for the moment by air-introduced machine, and mixed vapour passes through air-introduced machine effect
Sequentially enter pressure fan, heat exchanger finally enters vaporizer, is entering the mixed vapour before vaporizer after heat exchange
Become time mixed vapour；
When the mixed vapour of described cyclone separator enters circulating line two by air-introduced machine, secondary with circulating line one mixes steaming
Vapour converges commonly through vaporizer, subsequently into refrigerant circulation loop, passes sequentially through compressor, condenser and throttling arrangement,
Eventually passing back to vaporizer, vaporizer, by the organic solution condensation in mixed vapour and time mixed vapour, then reclaims, cooling
After gas carry out heat exchange by the mixed vapour in heat exchanger, with circulating line one again, preheat, subsequently into electricity
Heater, adds nitrogen supplementary device in electric heater front end, and last preheating gas is connected to spray by electric heater after being heated
Mist drying tower.
Oxygen content detector is set in above-mentioned spray drying tower.
The present invention uses closed cycle mode, employs nitrogen as heat cycles gas so that system may remain in low
Oxygen condition works, and keeps slight positive pressure state to prevent outside air from entering device in simultaneity factor.Pass through refrigeration cycle simultaneously
Reclaiming the organic solvent mechanical considerations in working steam, the response rate of organic solvent more than 90%, is efficiently reduced by device
The organic steam pollution to environment.In order to the nitrogen content in guarantee system is sufficient, add nitrogen supplementary device wherein,
In spray drying tower, it is provided with gas content detector simultaneously, when oxygen content exceedes setting value in system, controls nitrogen
Supplementary device supplements through row nitrogen in system, so preferably safeguards system can be in hypoxia, it is ensured that product chemistry
Character is constant.
Beneficial effects of the present invention:
1, system application nitrogen is as heat cycles gas, keeps hypoxia, emulation product in dry run in making system
Oxidized, it is ensured that the quality of product.Add nitrogen supplementary device and gas content detector in system, ensure in real time be
Oxygen in system is in low concentration state.
2, system adds coolant circulation circuit, cools down the mixed vapour produced in dry run, makes mixing steam
Organic steam condensation in vapour, and to organic solvent through row recycling, wherein the response rate can reach more than 90%, it is to avoid
Organic mixed vapour pollution to environment.
3, system adds heat exchanger, the heat in working steam is reclaimed, by the waste heat that is recovered to cooling
Heat cycles gas preheats, and so can be substantially reduced energy consumption, adds system entirety output efficiency.
4, system is closed circuit circulatory system, and keeps slight positive pressure state in system, has been effectively isolated outside air entrance
In system.
Accompanying drawing explanation
Fig. 1 is the overall system architecture flow chart of the present invention.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the application, real below in conjunction with the application
Execute the accompanying drawing in example, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described enforcement
Example is only some embodiments of the present application rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, all should belong to the application protection
Scope.
As it is shown in figure 1, a kind of energy-saving closed cycle spray drying system, system includes vacuum pump, degassing tank, filtration
Device, nebulizer, spray drying tower, cyclone separator；Organic solution slurry enters degassing tank by vacuum pump effect, subsequently into
Filter filters, and is entered the nebulizer of spray drying tower after filtration by vacuum pump effect, by passing through in spray drying tower
Electrically heated hot blast gas is dried, and dried granule enters cyclone separator with mixed vapour, and the product after separation leads to
Cross whirlwind separator bottom to flow out；System also includes circulating line one, circulating line two and refrigerant circulation loop；
Circulating line one includes pressure fan, vaporizer, heat exchanger；
Circulating line two includes vaporizer, heat exchanger, nitrogen supplementary device, electric heater；
Refrigerant circulation loop includes vaporizer, compressor, condenser and throttling arrangement；
Circulating line one, circulating line two and refrigerant circulation loop share vaporizer, circulating line one and circulating line two altogether
Use heat exchanger；
The mixed vapour of cyclone separator enters circulating line for the moment by air-introduced machine, and mixed vapour is by air-introduced machine effect successively
Enter pressure fan, heat exchanger finally enters vaporizer, and the mixed vapour before entering vaporizer becomes after heat exchange
Secondary mixed vapour；
When the mixed vapour of cyclone separator enters circulating line two by air-introduced machine, converge with the secondary mixed vapour of circulating line one
Close commonly through vaporizer, subsequently into refrigerant circulation loop, pass sequentially through compressor, condenser and throttling arrangement, finally
Returning to vaporizer, vaporizer, by the organic solution condensation in mixed vapour and time mixed vapour, then reclaims, after cooling
Gas carries out heat exchange by the mixed vapour in heat exchanger, with circulating line one again, preheats, subsequently into electrical heating
Device, adds nitrogen supplementary device in electric heater front end, and last preheating gas is connected to spray dried after being heated by electric heater
Dry tower.
Oxygen content detector is set in above-mentioned spray drying tower.
Embodiment:
Carbide alloy mixture using ethanol as solvent is dried.First slurry is improved power by vacuum pump
Send into degassing tank, the air in slurry is separated, be then fed into filter and slurry is filtered through row.By vacuum pump to slurry
Material pressurizes, and sends into the nebulizer being positioned in spray drying tower and is atomized through row, owing to being filled with high temperature nitrogen in spray drying tower,
Therefore vaporific slurry and working steam carry out contact heat exchange so that slurry wink-dry, form granular product and produce mixed simultaneously
Close steam.Product enters cyclone separator along with working gas, and carbide alloy mixture grain products is bottom cyclone separator
Discharging, mixed vapour enters circulating line one and circulating line two by air-introduced machine, and the mixed vapour entering circulating line two leads to
Cold-producing medium in refrigerant circulation loop is heated by pervaporation device, and owing to steam is cooled, wherein organic solute steam is cold
By pipe outlet outflow system after Ning, being used for recycling, remaining cooling low temperature nitrogen is preheated by heat exchanger,
Achieve the utilization to the heat in hybrid working steam in circulating line one, reduce energy expenditure.Work gas after preheating
Body is heated in high-temperature gas subsystem again by electric heater and is dried material.When system exceeds standard with middle oxygen content
Time, gas content device detects that oxygen content exceeds standard, and by sending instructions to nitrogen supplementary device, it is achieved to nitrogen in system
Supplementing of gas, it is ensured that system is in hypoxia.
This closed cycle spray drying system scope of application: 1. material liquid is made up of solid and organic solvent;2. require have
Machine solvent all reclaims;3. poisonous solid, powdery product it is dried;The most do not allow abnormal smells from the patient, solvent vapo(u)r and particulate material ease
(prevent from environment, air are polluted) when going out;5. when dust is likely to be formed explosive mixture in atmosphere;The most organic
When solvent has blast and danger of combustion;7. in dry run, when dust does not allows to contact with oxygen.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and deformation, these improve and deformation
Also should be regarded as protection scope of the present invention.
Claims (2)
1. an energy-saving closed cycle spray drying system, described system include vacuum pump, degassing tank, filter, nebulizer,
Spray drying tower, cyclone separator；Organic solution slurry enters degassing tank by vacuum pump effect, subsequently into filter mistake
Filter, enters the nebulizer of spray drying tower, by through electrically heated in spray drying tower by vacuum pump effect after filtration
Hot blast gas is dried, and dried granule enters cyclone separator with mixed vapour, and the product after separation is divided by whirlwind
Flow out bottom device；It is characterized in that: described system also includes circulating line one, circulating line two and refrigerant circulation loop；
Described circulating line one includes pressure fan, vaporizer, heat exchanger；
Described circulating line two includes vaporizer, heat exchanger, nitrogen supplementary device, electric heater；
Described refrigerant circulation loop includes vaporizer, compressor, condenser and throttling arrangement；
Described circulating line one, circulating line two and refrigerant circulation loop share vaporizer, described circulating line one and circulation
Pipeline two shares heat exchanger；
The mixed vapour of described cyclone separator enters circulating line for the moment by air-introduced machine, and mixed vapour passes through air-introduced machine effect
Sequentially enter pressure fan, heat exchanger finally enters vaporizer, is entering the mixed vapour before vaporizer after heat exchange
Become time mixed vapour；
When the mixed vapour of described cyclone separator enters circulating line two by air-introduced machine, secondary with circulating line one mixes steaming
Vapour converges commonly through vaporizer, subsequently into refrigerant circulation loop, passes sequentially through compressor, condenser and throttling arrangement,
Eventually passing back to vaporizer, vaporizer, by the organic solution condensation in mixed vapour and time mixed vapour, then reclaims, cooling
After gas carry out heat exchange by the mixed vapour in heat exchanger, with circulating line one again, preheat, subsequently into electricity
Heater, adds nitrogen supplementary device in electric heater front end, and last preheating gas is connected to spray by electric heater after being heated
Mist drying tower.
One the most according to claim 1 energy-saving closed cycle spray drying system, it is characterised in that: described spray dried
Oxygen content detector is set in dry tower.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106390495A (en) * | 2016-09-25 | 2017-02-15 | 黄卫东 | Air energy spraying and drying equipment |
| CN110604932A (en) * | 2019-09-29 | 2019-12-24 | 贵州梅岭电源有限公司 | Method for preparing potassium perchlorate powder by using closed-loop circulating spray dryer |
| CN111841047A (en) * | 2019-04-26 | 2020-10-30 | 宁德时代新能源科技股份有限公司 | Negative electrode material production equipment |
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| CN101884847A (en) * | 2010-07-15 | 2010-11-17 | 常州三全干燥设备有限公司 | Drying method of glutamic acid-fermented waste liquid |
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| CN111841047A (en) * | 2019-04-26 | 2020-10-30 | 宁德时代新能源科技股份有限公司 | Negative electrode material production equipment |
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| CN106166396B (en) | 2018-04-13 |
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