CN103891876B - The evaporation vapour produced with steam drying Fodder and food and other material are carried out to method and the device systems thereof of recycle and reuse - Google Patents
The evaporation vapour produced with steam drying Fodder and food and other material are carried out to method and the device systems thereof of recycle and reuse Download PDFInfo
- Publication number
- CN103891876B CN103891876B CN201210585816.6A CN201210585816A CN103891876B CN 103891876 B CN103891876 B CN 103891876B CN 201210585816 A CN201210585816 A CN 201210585816A CN 103891876 B CN103891876 B CN 103891876B
- Authority
- CN
- China
- Prior art keywords
- steam
- vapour
- purifier
- import
- washing
- 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.)
- Active
Links
- 238000001704 evaporation Methods 0.000 title claims abstract description 65
- 230000008020 evaporation Effects 0.000 title claims abstract description 65
- 238000001035 drying Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 title claims abstract description 25
- 235000013305 food Nutrition 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 119
- 235000014171 carbonated beverage Nutrition 0.000 claims abstract description 76
- 238000005406 washing Methods 0.000 claims abstract description 73
- 230000008929 regeneration Effects 0.000 claims abstract description 42
- 238000011069 regeneration method Methods 0.000 claims abstract description 42
- 238000007906 compression Methods 0.000 claims abstract description 40
- 230000006835 compression Effects 0.000 claims abstract description 39
- 239000000428 dust Substances 0.000 claims abstract description 22
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 230000008676 import Effects 0.000 claims description 58
- 229920006395 saturated elastomer Polymers 0.000 claims description 19
- 238000007654 immersion Methods 0.000 claims description 14
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000004087 circulation Effects 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 229920002472 Starch Polymers 0.000 description 4
- 240000008042 Zea mays Species 0.000 description 4
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 4
- 235000005822 corn Nutrition 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
- 239000008107 starch Substances 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 244000061456 Solanum tuberosum Species 0.000 description 2
- 235000002595 Solanum tuberosum Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 229920002261 Corn starch Polymers 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 229940099112 cornstarch Drugs 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
-
- 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
A kind of evaporation vapour to producing with steam drying Fodder and food and other material carry out the method for recycle and reuse, it comprises the following steps: 1), by the dry run of Fodder and food control to operate under pressure-fired, its evaporation vapour produced is through control valve group I(1) regulate, enter purifier (2) washing along pipeline; 2), can obtain through purifier the regeneration vapour that dustiness≤5mg/kg reaches industrial steam standard; 3), regeneration vapour enter compression set pressurization improve pressure to >=0.5 ~ 0.8Mpa, simultaneously raising temperature to >=152 DEG C, become high pressure vapour; 4) high pressure vapour becomes mixed steam with the raw steam come from raw steam pipe (21), and mixed steam enters drying equipment by air intake (21) and dries wet stock.Advantage of the present invention is: can reduce the thermal loss that air access arrangement causes, and can also wash carbonated drink recovery, energy-saving and emission-reduction, obviously reduce production cost to the dust of the evaporation vapour produced in system, discharge, condensed water and high temperature.
Description
Technical field
The present invention relates to Fodder and food and process particularly Starch Production technical field.Especially a kind of evaporation vapour to producing with steam drying Fodder and food and other material carry out method and the device systems thereof of recycle and reuse, described recovery comprises material dust, condensed water in evaporation vapour, evaporation vapour, washes the recovery of carbonated drink and heat, and recycles.
Background technology
Fodder and food processes corn flour and the dehydrated potato powder of particularly Starch Production, and production technology is similar.For cornstarch, raw material corn will through purification, soak, broken, refine, sieve and wash, be separated, the operation such as starch washing.The wherein plumule of broken process generation, extracts oil after washing, dehydration, drying.Sieve and wash the slag crust that operation generates, through dehydration, dry, pulverizing, make fiber powder.The isolated seitan of separation circuit, through dehydration, drying, makes albumen powder.The drying of this three operation all uses tube bank machine, and thermal source is the steam of more than 152 DEG C.Starch is dried and is used airflow machine.Thermal source is the steam of about 165 ~ 230 DEG C.Tube bank machine and airflow machine all belong to drying machine.Produce 1 ton of starch and produce drying machine evaporation vapour about 0.4 ton.Current evaporation vapour only has 100 DEG C because temperature is low, belongs to low-temperature heat source without use, and with dust, all can only enter air, contaminated environment.In production, drying machine is negative pressure mostly, and outside air enters in a large number, can account for 10 ~ 30% of evaporation vapour total amount, meaninglessly takes away 10 ~ 30% heats, causes energy waste.Therefore energy-conservation to process, comprise reduce air enter take away heat, evaporation vapour reclaimed, dust, condensed water and high temperature to discharge washes carbonated drink and reclaims four aspects.Pipe bundle drier and pneumatic drier all belong to drying machine, and parameter similar, are the drying machines doing thermal source with steam general in Fodder and food processing.
Summary of the invention
The object of this invention is to provide method and device systems thereof that a kind of evaporation vapour to producing with steam drying Fodder and food and other material carry out recycle and reuse, employing this method and device systems can reduce the thermal loss that air access arrangement causes, carbonated drink recovery can also be washed to the dust of the evaporation vapour produced in system, discharge, condensed water and high temperature, energy-saving and emission-reduction, obviously reduce production cost.
The present invention is by the following technical solutions to achieve the above object of the invention:
This evaporation vapour to producing with steam drying Fodder and food and other material carry out the method for recycle and reuse, it is characterized in that: it comprises the following steps:
1), by the dry run of Fodder and food control to operate under pressure-fired, its evaporation vapour produced regulates through control valve group I1, enters purifier 2 wash along pipeline;
2), described washing is divided into two steps:
A) slightly wash: the washing carbonated drink water pump II6 being greater than 100 DEG C with temperature, be pressurized to 0.65Mpa, exit of pump connects a filter 39, and filter outlet connects the washing carbonated drink import 11 of purifier, enters purifier and does thick washing to evaporation vapour;
B) fine purifiation is washed: the condensed water washing produced with dry run, and condensed water flows out from condensation-water drain 25, by self overbottom pressure 0.5Mpa or after water pump III9, enters purifier wash as fine purifiation the evaporation vapour after thick washing through condensed water import 10; Essence washings also can adopt outer confession to wash carbonated drink, outer confession is washed carbonated drink and is entered heater I29 by heater I import 28, temperature more than 100 DEG C is heated to by the heat energy of steam or chemical energy or electric energy, from heater core outlet 30, enters purifier to the washing of evaporation vapour for washing carbonated drink import 27 outward through purifier; Or condensed water supplements, to obtain the regeneration vapour that dustiness≤5mg/kg reaches industrial steam standard for washing carbonated drink mutually with outer;
3), regenerate vapour to regenerate vapor outlet 14 from purifier 2 and flow out, the regeneration vapor inlet 18 entering compression set 3 along pipeline through control valve group II8 controlled pressure enters compression set, pressurizeed by compression set 3 and improve pressure to >=0.5 ~ 0.8Mpa, improve temperature to >=152 DEG C simultaneously, become high pressure vapour;
4) high pressure vapour compressed device 3 high pressure vapor outlet 19 flows out, enter high steam pressing tube 20, become mixed steam, temperature >=152 ~ 230 DEG C of mixed steam with the raw steam from raw steam pipe 21, pressure >=0.5 ~ 0.8Mpa, enters drying equipment by air intake 21 and dries wet stock.
What evaporation vapour obtained after washing densely washes the bottom that carbonated drink is positioned at purifier, delivers to material process as immersion water source, with recovered material dust, recycle-water and recovery heat by water pump I5.
Described compression set adopts electric fan, compressor or steam jet ejector, or their combination.
When compression set is steam jet ejector, the raw steam inlet of injector is equipped with temperature-sensing valve group and carries out temperature control, and temperature-sensing valve group is temperature-sensing valve, electric control valve, pneumatic control valve or self-supporting temperature-sensing valve.
Steam jet ejector uses overheated vapour.
When raw steam is saturated vapor, saturated vapor enters superheater 32 through superheater import 31, the energy heats produced by fuel combustion is to 200 DEG C and become overheated vapour above, goes out superheater outlet (33) and enters injector injection regeneration vapour, generate the mixed steam reaching drying equipment requirement.
When the raw steam adopted in steam jet ejector is saturated vapor, regeneration steam can be sent into heater II35, the regeneration vapour of 100 DEG C is heated to more than 152 DEG C, the saturated or overtemperature under making the mixed steam of generation reach mixed steam pressure.
Purifier is provided with flushing water import, rinse the mouth of a river and connect valve 7, the pressure duct after the other end water pump II6 of valve and filter, rinse the dirt mud be attached on purifier inwall and internal part, ensure cross-sectional flow area, prevent regeneration vapour by the secondary pollution of dirt mud.
Described device systems comprises: drying equipment 4, purifier 2, compression set 3, control valve group I1, valve and pipeline, wherein, the import of purifier meets control valve group I1, the evaporation vapor outlet of another termination drying equipment of control valve group, drying equipment import 22 connects threeway, two interfaces of threeway are delivered a child steam pipework 21 and export the high steam pressing tube 20 be connected with compression set respectively, described purifier top is provided with condensed water import 10, connect another termination one water pump of pipeline III9 of condensed water import, pump inlet connects the condensation-water drain 25 of drying equipment, the washing carbonated drink of purifier exports 16 water pump II6 imports, exit of pump connects a filter 39, filter outlet connects the washing carbonated drink import 11 of purifier, purifier establishes outer confession to wash carbonated drink import 27, outer confession is washed carbonated drink import and is connected in series a heater I29, the dense of purifier washes carbonated drink water pump I5, water pump I outlet is connected to immersion operation, the regeneration vapor outlet of purifier meets control valve group II8, and the outlet of control valve group II8 connects the regeneration vapor inlet 18 of compression set.
Purifier is steam jet ejector, and the import of the uperize of described steam jet ejector connects a temperature-sensing valve group, and the temperature-sensing valve group other end connects a superheater 32.
A heater II35 is connected in series between the outlet of control valve group II8 and the import of compression set.
Filter 39 outlet connects a valve 7, and the valve other end connects with flushing water import.
Advantage of the present invention is: owing to present invention employs micro-pressure operation, avoid air to enter and take away heat, reclaim again the evaporation vapour of discharge, reclaiming in evaporation vapour the material dust that carries and reclaim condensed water, wash heat four aspects of carbonated drink and water, is a pressure-fired, the energy conserving systems of four circulations and method in brief.
Pressurized operation, being by regulating exhaust valve aperture, making wet feed entrance keep 2 ~ 30Pa pressure-fired, avoiding the air system of entering to take heat out of, thus eliminate unnecessary heat losses.This kind controls successfully to use in steelmaking converter off-gas recovery.
Reclaim evaporation vapour, to the udst separation of evaporation vapour, its dustiness is made to reach boiler feedwater suspension content standard≤5mg/kg, improve its temperature again to more than 152 DEG C, pressure is to more than gauge pressure 0.4Mpa, reenter drying equipment and do thermal source, replace major part or whole initial steam (also known as raw steam).
Reclaim evaporation vapour take out of material dust and condensed water, wash carbonated drink, as washing carbonated drink by the condensed water of closed recovery drying machine, wash carbonated drink and do immersion water dense or send into corn steep liquor to be concentrated again, the material dust as pollutant emission that evaporation vapour is taken out of is sent back to production line use as raw material secondary, providing immersion water and temperature for soaking operation again simultaneously, reducing the raw quantity of steam be used for soaking water heating.
The airtight washing of pressure-fired open loop system hot water.Open loop system constantly has new fine purifiation carbonated drink to enter, constantly have again dense wash carbonated drink extract out, reach dynamic equilibrium.Airtight is that washing is carried out at closed clarifier.Hot wash, be no matter slightly wash carbonated drink, fine purifiation carbonated drink or outer confession to wash carbonated drink, temperature is all higher than 100 DEG C, and clarifier running temperature is greater than 100 DEG C.The washings of washed evaporation vapour stop in clarifier bottom and are no less than 20 minutes and precipitate, and because of constantly there being condensed water to add, having of equivalent must be had sedimentaryly densely to wash carbonated drink discharge.So washing process is airtight but system is opening.
The course of work is:
Purification method adopts the airtight washing of open loop system hot water, has and slightly washes and fine purifiation twice.Slightly wash the washing carbonated drink after with precipitation suspension, wash away the dust of particle diameter >=10 micron in evaporation vapour, wash the water purification that rear dust content≤10mg/kg. fine purifiation suspension content reaches industrial boiler water-supply standard 5mg/kg, the steam condensate (SC) of preferential use drying equipment, this is the closed recovery of condensed water.Because condensed water is the saturated condensed water of pressure higher than 0.4Mpa, before flash of steam, water temperature is saturation temperature 152 DEG C, higher than evaporation stripping temperature, ensure that washing carbonated drink temperature is greater than 100 DEG C, thus decreases the condensation loss of evaporation vapour.The high-temperature condensation water of more than 152 DEG C enter clarifier by have an appointment 10% condensed water flash vaporization, mix with evaporation vapour, generation mass-and heat-transfer, strengthened purification effect.Also can use outer watering, strengthen the fine purifiation water yield, or increase washing together, be i.e. the 3rd road washing.But need be heated to >=110 DEG C.Ensure that purification process completes more than 100 DEG C.Evaporate vapour dust content≤5mg/kg after fine purifiation, become the regeneration vapour meeting industrial boiler steam quality standard.
Because water temperature is higher, detersive efficiency is also higher; Steam temperature height can reduce condensation loss, so washing steam pressure is also pressure-fired.And the control of available pressure regulator valve group (8) washes vapour operating pressure >=100 ~ 500Pa.The methods such as sedimentation, centrifugal and filtration also can be adopted the thick dedusting of evaporation vapour.Thick cleaner can with being made of one of clarifier equipment, also can separate separately or integral production.
The washings of washed evaporation vapour are no less than 20 minutes in the stop of clarifier bottom and precipitate, and precipitation rear lower becomes dense and washes carbonated drink, and top is washing carbonated drink.Also available filter improves the cleanliness factor of washing carbonated drink.Densely wash carbonated drink and taken away deliver to immersion operation by dense steam water pump of washing, wash carbonated drink and be recycled utilization.Washing carbonated drink is retracted to clarifier top by washing steam water pump and does thick washing to evaporation vapour.Because constantly having condensed water to add, the dense of equivalent must be had to wash carbonated drink discharge.So be wash in confined conditions, but belong to open loop system.
Flushing water takes from washing steam water pump export pipeline, by setup program or manual control switch control to make flushing water enter clarifier by flushing water import to rinse the dirt mud be attached on clarifier inwall, ensure cross-sectional flow area, prevent regeneration vapour to be secondary polluted.
To pipeline and tank body insulation, make evaporation vapour, regenerate vapour and wash carbonated drink temperature to keep more than 100 DEG C, reduce condensation loss to greatest extent.
That reclaims densely washes carbonated drink and contains the material dust taken out of of evaporation vapour, and simultaneous temperature, higher than 100 DEG C, is applicable to doing immersion water very much, not only recovered material, and immersion water source is provided, more valuable than water is coolant-temperature gage 100 DEG C, reduces or does not re-use raw steam to the heating of immersion water.It is energy-conservation for reclaiming heat, and recovered material also has energy-saving significance.
Initial steam and evaporation vapour, regeneration vapour cycle transform, and complete the circulation of steam.
The condensed water closed type of drying machine is reclaimed as fine purifiation carbonated drink, washes carbonated drink give immersion operation dense, complete condensed water simultaneously and wash the recovery of carbonated drink and heat thereof.Water and heat be too many levels circulation in production system, can treat as and recycle.
The dense material dust washed in carbonated drink is given immersion and is got back to production line preceding processes, completes recovery and the circulation of material dust
Owing to avoiding the thermal loss that air is taken away, the latent heat accounting for the total Nem 80% of steam recycles, and the material of discharge and the heat of water are recycled, and after considering various loss, drying machine also can save new (life) steam more than 60%, soaks energy-conservation more than 60%.
Compression set has regeneration vapor inlet and high pressure vapor outlet.Use one or the combination of electric fan, compressor and steam jet ejector, one or more levels does regeneration vapour and compresses, regeneration vapour enters compression set from the regeneration vapor inlet of compression set, being improved pressure and temperature after compression set compression becomes high-pressure and high-temperature steam, temperature >=152 DEG C, pressure >=0.4Mpa, enters high steam pressing tube from compression set outlet.Mixed steam is become with the raw steam carrying out spontaneous steam pipe.Temperature >=152 DEG C of mixed steam, force pressure >=0.4Mpa, reaches drying machine instructions for use, enters two thermal source drying machine go to dry wet stock through two thermal source drying machine air intake.
Enthalpy-entropy diagram and water vapour thermodynamic property table from steam: when 100 DEG C of saturated vapors by isentropic Compression to gauge pressure 0.4Mpa, namely temperature is raised to 152 DEG C.Enthalpy is increased to 656 kilocalories/kg from 638 kilocalories/kg.Level Four centrifugal compressor or stage piston-type compressor or multistage axial flow and centrifugal mixed flow fan is adopted to realize easily.Required isentropic compression work is
656 kilocalories/kg-638 kilocalorie/kg=18 kilocalorie/kg
Because actual compression is non-isentropic Compression, getting isentropic efficiency is 90%, and the work done during compression of needs is 18 ÷ 0.90=20 kilocalorie/kg.
Merit thermal conversion rate is 1kw=860 kilocalorie, closes electrical power
20 kilocalories/kg ÷ 860 kilocalories/kw=0.02326kw/kg
The saturated vapor compressing 1 ton 100 DEG C needs power
0.02326kw/kg×1000kg/t=23.26kw/t
100 DEG C of saturated vapor latent heat 539 kilocalories/kg, namely often reclaim 1kg and evaporate vapour recyclable latent heat 539 kilocalorie.Getting organic efficiency is 90%, can obtain heat
539 kilocalories/kg × 90%=485 kilocalorie/kg
Electric energy drops into and output ratio is
23.26：485=1：20.85
Known input and output is than being very high.
Owing to dropping into 1 part of work done during compression, obtaining the heat of 20.85 times, so use compression device compressed steam, is a kind of high-efficiency heat pump.
For ensureing that compression process secondary pollution does not occur, if use piston compressor to use oilless (oil free) compressor.Oilless (oil free) compressor on market is substantially applicable.If use centrifugal compressor and axial flow and centrifugal blower inherently without oil machine.
When using steam jet ejector, initial steam (raw steam) enters injector from raw steam inlet, regeneration vapour enters injector from regeneration vapor inlet, compresses and is blended in injector and complete, and pressure and temperature when mixed steam goes out high pressure vapor outlet just reaches drying machine vapour standard.To the enterprise only having saturated raw steam, if use injector to need dress steam superheater that raw Steam Heating is become overheated vapour, or with heater regeneration vapour be heated to 152 DEG C and more than, restrain or airflow machine throttle (steam) temperature 152 DEG C to ensure that mixed steam coolant-temperature gage reaches.
Use steam jet ejector fashionable dress outlet temperature control device.When flow or the Parameters variation of raw steam and regeneration vapour, regulate the flow of raw steam, what ensure that the temperature and pressure of mixed steam meets drying machine uses vapour standard.
Evaporation vapor outlet pipeline is equipped with control valve group I1, and its pressure transmitter is loaded on evaporation vapor outlet or wet feed import, is loaded on wet feed import and removes the limit, and is loaded on evaporation vapor outlet and gets high level.
Accompanying drawing explanation
Fig. 1: be device systems figure of the present invention
Fig. 2: the steam jet ejector schematic diagram that band control valve special is temperature automatically controlled
In Fig. 1 and Fig. 2,1, control valve group I, 2, purifier, 3, compression set, 4, drying equipment, 5, water pump I, 6, water pump II, 7, valve, 8, control valve group II, 9 water pump III, 10, condensed water import, 11 washing carbonated drink imports, 12, evaporation vapor inlet, 13, flushing water import, 14, regeneration vapor outlet, 15, dense wash carbonated drink outlet, 16, washing carbonated drink exports, and 17, raw steam inlet, 18, regeneration vapor inlet, 19, high pressure vapor outlet, 20, high steam pressing tube, 21, raw steam pipe, 22 steam inlets, 23, wet feed import, 24, evaporation vapor outlet, 25, condensation-water drain, 26, drier outlet, 27, carbonated drink import is washed in outer confession, and 28, heater I import, 29, heater I, 30I heater I exports, and 31, superheater import, 32, superheater, 33, superheater outlet, 34 heater II imports, 35 heater II, 36 heater outlets, 37, fixed gas self-draining valve 38, fixed gas floss hole 39, filter 40, filter II import 41, filter outlet 42, temperature-sensing valve import 43, temperature-sensing valve 44, temperature-sensing valve outlet 45, executing agency, 46, superheater chamber, 47 aciculiform spools, 48, nozzle.49, mixing chamber, 50, diffuser, 51, intelligent controller, 52 Folding-Screen cover wire, 53 transmitters, and 54, probe, 55, outlet conduit, 56, initial steam import, 57, regeneration vapor inlet.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, control valve group I1 changes aperture according to the pressure signal in the drying machine detected (pipe bundle drier) and controls drying machine wet feed import pressure-fired 2 ~ 30Pa, takes heat out of after avoiding air to enter.Evaporation vapour through export 24 and control valve group I1 enter purifier 2 along pipeline through air intake 12 and washed.Mode of washing has water to admire and sprays, and there are crossing current, adverse current, following current, in any case stream and perverse and unreasonable manner stream in washing direction.
The washing carbonated drink that temperature is greater than 100 DEG C is pressurized to 0.65Mpa by water pump II6 and enters clarifier through the washing carbonated drink import 11 of purifier 2 and do thick washing to evaporation vapour, steam weight ratio >=5:1, because evaporation vapour flow velocity in equipment is about 10m/s, steam velocity ratio is 3.4:1, makes its dustiness be down to≤10mg/kg.
The condensed water that drying machine produces flows out by self overbottom pressure 0.5Mpa from condensation-water drain 25, can enter clarifier 2 wash as fine purifiation the evaporation vapour after slightly washing through condensed water import 10.Strengthening clean result for improving pressure, with pump III9, pressure being improved as brought up to 0.65Mpa to condensed water pressurization, enter clarifier and fine purifiation is done to the evaporation vapour after slightly washing wash.
Due to 1.3 times that drying machine steam consumption is evaporation capacity, technological design determines Water Vapor Quality than being 1.3:1.The water spouting velocity of 0.4Mpa pressure is 28m/s, and velocity ratio is 2.8:1.In actual production, drying machine vapour pressure is greater than 0.4Mpa, mostly is 0.5 ~ 0.8Mpa, 0.5Mpa condensate temperature 159 DEG C, condensed water temperature is higher than evaporation vapour 59 DEG C, have an appointment in washing 10% condensed water to vaporize, washing process is also mass-and heat-transfer process, greatly strengthens clean result.
Also available pump III9 pressurizes raising spouting velocity further, strengthens clean result.Fine purifiation is washed rear evaporation vapour dustiness and is down to≤5mg/kg, reaches industrial boiler steam standard, becomes regeneration vapour.
Dustiness≤5mg/kg reaches the regeneration vapour of industrial steam standard, regenerate vapor outlet 14 from clarifier 2 to flow out, enter compression set 3 along pipeline to regenerate vapor inlet 18 and enter compression set and to be pressurizeed by compression set 3 that to improve pressure to maintaining an equal level with raw steam be that 0.4 ~ 0.8Mpa improves temperature to >=152 DEG C simultaneously, become high pressure vapour; Compressed device 3 high pressure vapor outlet 19 flows out and enters high steam pressing tube 20, mixed steam is become with the raw steam from raw steam (initial steam) pipe 21, temperature >=152 ~ 230 DEG C of mixed steam, pressure >=0.4 ~ 0.8Mpa, meet two thermal source drying machine vapour standard, enter drying machine by air intake 22.Wet stock enters drying machine through wet feed import 23, carries out heat exchange with mixed steam, and the latent heat of condensation and the rising of part sensible heat temperature of the moisture absorption mixed steam release in wet stock convert the latent heat of vaporization of moisture to and vaporize, and become evaporation vapour.Go out to evaporate vapor outlet 23, enter purifier 2 along pipeline through evaporation vapor inlet 12 through pressure regulator valve group 1 and be cleaned.
When using steam jet ejector, raw steam is from compression set and injector raw (newly)) steam inlet 17 entrance pressure compression apparatus and injector 3, pressure energy is converted to kinetic energy, pressure is reduced to negative pressure, the regeneration vapour entrance 18 inspiration injector regenerating the compressed device of vapour and injector 3, with the increase of pipeline section, diffusion is to drying machine vapour normal temperature >=152 DEG C again in the two mixing, and pressure >=0.4Mpa. enters dryer cycle through the high steam pressing tube 20 of injector and compression set outlet 19 and drying machine steam inlet 22 and utilizes.
The carbonated drink of washing of washed evaporation vapour stops in clarifier 2 bottom and is no less than 20 minutes and precipitates, and because of constantly there being condensed water to add, having of equivalent must be had sedimentaryly densely to wash carbonated drink discharge.So be wash under airtight condition in open loop system.Namely washing process is airtight but system is opening.Have and sedimentaryly densely wash carbonated drink and wash carbonated drink outlet 15 from clarifier bottom dense and extracted out to send to by water pump I5 and make immersion water or other purposes, material dust, water and heat are recovered simultaneously, realize recycling of material, water and heat.The washing carbonated drink of clarification is flowed out from clarifier portion on the upper side, and water pump II6 pressurization enters clarifier through washing carbonated drink entrance 11 again and slightly washs evaporation vapour.
The condensed water of drying machine is by self overbottom pressure or pressurize through water pump III9 again, enters clarifier do fine purifiation to the evaporation vapour after slightly washing and wash by clarifier condensed water import 10.So new smart washings constantly enter, and evaporation vapour is washed continuously, the dust washed and wash carbonated drink with smart washings equivalent dense entering clarifier and constantly discharge clarifier again, reach dynamic equilibrium, in turn ensure that the cleannes of washing carbonated drink.And the dust washed is corn or dehydrated potato powder etc., be not as pollutant emission, but the headend equipment getting back to again system is reused as raw material.
Immersion needs water, and is hot water, and the higher soak time of temperature is shorter, and namely productivity ratio is higher.Use normal temperature new water both to need water resource again by raw Steam Heating, therefore reclaim and use dense wash carbonated drink not only the heat of material dust He Shui and water be recycled and recycle, and to boost productivity.Therefore be Steam Recovery, material dust reclaims, condensed water and wash heat recovery four recoverys of carbonated drink can be described as " two water " and water, and heat four circulation of the latent heat of steam, particulate dust, " two water " and " two water ", one action four must.
Flushing water takes from the pressure duct after water pump II, and valve 7 by setup program or Artificial Control washing time and the water yield, rinses the dirt mud be attached on clarifier inwall and internal part, ensures cross-sectional flow area, prevent regeneration vapour by the secondary pollution of dirt mud.
Embodiment 2 uses or and washes carbonated drink with outer confession
Not only when use is outer for washing carbonated drink, comprising and using the outer deficiency for washing carbonated drink or supplementary condensed water completely, or wash carbonated drink with outer confession and do the 3rd road slurry, or increase the amount of condensed water but also do the 3rd road washings, then increase heater 29.Outer confession is washed carbonated drink and is washed carbonated drink import 28 by outer confession and enter heater, being heated to temperature more than 100 DEG C, from heater core outlet 30, entering clarifier to the washing of evaporation vapour outward through clarifier for washing carbonated drink import 27 by the heat energy of steam or chemical energy or electric energy.
Embodiment 3 use steam jet ejector but without cross hot vapour source
When raw vapour source is saturated vapor, the mixed steam of injector outlet can not reach the admission standard of drying machine.With steam superheater, saturated vapor must be heated into overheated vapour.Saturated vapor enters superheater 32 through superheater import 31, is become overheated vapour by fuel combustion generation and energy heats to more than 200 DEG C, goes out superheater outlet 33 and enters injector injection regeneration vapour, generate the mixed steam reaching drying machine requirement.
Embodiment 4 uses steam jet ejector but without crossing hot vapour source another program
The another program of dealing with problems establishes heater II35 that the regeneration vapour of 100 DEG C is heated to above 152 DEG C, the saturated or overtemperature under making the mixed steam of generation reach mixed steam pressure.Be heated to the pressure of how many temperature depending on the saturated vapor source of use.
Enter to regenerate vapour heater II import 34 from the regeneration vapour of clarifier 2, be heated to necessary temp by fuel, from heater core II exports 36, enters injector regeneration vapor inlet 18, mixes diffusion again with injection saturated vapor, generate mixed steam for drying machine.
Embodiment 5 injector outlet temperature controls
For ensureing to meet drying machine requirement all the time with mixed steam parameter during regeneration vapour parameter fluctuation, in injector import dress temperature-sensing valve group jetting steam caused.Controlling general principle is regulate initial steam consumption with temperature-sensing valve.Different according to control valve, there are Special temperature-sensing valve, electronic or pneumatic control valve and self-supporting temperature-sensing valve three kinds, for Special temperature-sensing valve:
As shown in Figure 2, at outlet conduit, temp probe 54 and transmitter 53 are housed, to pop one's head in 54 perception injector outlet steam temperatures, transmitter 53 converts 4 ~ 20mA current signal or voltage signal or resistance signal to temperature signal and passes to intelligent controller 51 through shielding line 52, controller can adopt intelligent digital temperature controller, as WP220.Temperature controller sends instruction according to received electric current or voltage or resistance signal to regulating-valve actuator 45, and executing agency 45 changes the gap with nozzle 48 according to instruction moving valve core 47, thus modified vapours amount.When mixed vapour temperature lower than setting value as tube bank 151 DEG C, machine, spool is moved to the left and strengthens superheated steam amount.When vapor (steam) temperature is too high, spool is moved right and reduces overheated vapour amount.
Electronic, pneumatic control valve is substantially identical with Special temperature-sensing valve at temp probe, transmitter and intelligent controller.Distinguish the valve body in executing agency.The closing element of control valve is valve plate instead of aciculiform spool.
The sensor of self-supporting temperature-sensing valve is the liquid expanded with heat and contract with cold, and directly changes valve opening, be not equipped with intelligent meter, without the need to electrical source of power with the change of probe sense temperature.
Claims (12)
1. the evaporation vapour produced with steam drying Fodder and food and other material are carried out to a method for recycle and reuse, it is characterized in that: it comprises the following steps:
1), by the dry run of Fodder and food control to operate under pressure-fired, its evaporation vapour produced regulates through control valve group I (1), enters purifier (2) washing along pipeline;
2), described washing is divided into two steps:
A) slightly wash: washing carbonated drink water pump II (6) being greater than 100 DEG C with temperature, be pressurized to 0.65Mpa, exit of pump connects a filter (39), filter outlet connects the washing carbonated drink import (11) of purifier, enters purifier and does thick washing to evaporation vapour;
B) fine purifiation is washed: the condensed water washing produced with dry run, condensed water flows out from condensation-water drain (25), by self overbottom pressure 0.5Mpa or after water pump III (9), enter purifier through condensed water import (10) and the evaporation vapour after thick washing is washed as fine purifiation; Fine purifiation is washed the outer confession of hydromining and is washed carbonated drink, outer confession is washed carbonated drink and is entered heater I (29) by heater I import (28), temperature more than 100 DEG C is heated to by the heat energy of steam or chemical energy or electric energy, from heater core outlet (30), enters purifier to the washing of evaporation vapour for washing carbonated drink import (27) outward through purifier; Or condensed water supplements, to obtain the regeneration vapour that dustiness≤5mg/kg reaches industrial steam standard for washing carbonated drink mutually with outer;
3), regenerate vapour to flow out from purifier (2) regeneration vapor outlet (14), the regeneration vapor inlet (18) entering compression set (3) along pipeline through control valve group II (8) controlled pressure enters compression set, pressure is improved to >=0.5Mpa by compression set (3) pressurization, improve temperature to >=152 DEG C simultaneously, become high pressure vapour;
4) the compressed device of high pressure vapour (3) high pressure vapor outlet (19) flows out, enter high steam pressing tube (20), mixed steam is become with the raw steam come from raw steam pipe (21), temperature >=152 DEG C of mixed steam, pressure >=0.5Mpa, enters drying equipment by air intake (21) and dries wet stock.
2. the method for recycle and reuse according to claim 1, it is characterized in that: what evaporation vapour obtained after washing densely washes the bottom that carbonated drink is positioned at purifier, material process is delivered to as immersion water source, with recovered material dust, recycle-water and recovery heat by water pump I (5).
3. the method for recycle and reuse according to claim 1, is characterized in that: described compression set adopts electric fan, compressor or steam jet ejector, or their combination.
4. the method for recycle and reuse according to claim 3, it is characterized in that: when compression set is steam jet ejector, the raw steam inlet of injector is equipped with temperature-sensing valve group and carries out temperature control, and temperature-sensing valve group is temperature-sensing valve, electric control valve, pneumatic control valve or self-supporting temperature-sensing valve.
5. the method for recycle and reuse according to claim 4, is characterized in that: steam jet ejector uses overheated vapour.
6. the method for recycle and reuse according to claim 4, it is characterized in that: when raw steam is saturated vapor, saturated vapor enters superheater (32) through superheater import (31), the energy heats produced by fuel combustion is to 200 DEG C and become overheated vapour above, go out superheater outlet (33) and enter injector injection regeneration vapour, generate the mixed steam reaching drying equipment requirement.
7. the method for recycle and reuse according to claim 4, it is characterized in that: when the raw steam adopted in steam jet ejector is saturated vapor, regeneration steam can be sent into heater II (35), the regeneration vapour of 100 DEG C is heated to more than 152 DEG C, the saturated or overtemperature under making the mixed steam of generation reach mixed steam pressure.
8. the method for recycle and reuse according to claim 1, it is characterized in that: purifier is provided with flushing water import, rinse the mouth of a river and connect valve (7), pressure duct after the other end water pump II (6) of valve and filter, rinse the dirt mud be attached on purifier inwall and internal part, ensure cross-sectional flow area, prevent regeneration vapour by the secondary pollution of dirt mud.
9. the device systems for recycle and reuse method described in claim 1, it is characterized in that: it comprises: drying equipment (4), purifier (2), compression set (3), control valve group I (1), valve and pipeline, wherein, the import of purifier meets control valve group I (1), the evaporation vapor outlet of another termination drying equipment of control valve group, drying equipment import (22) connects threeway, two interfaces of threeway are delivered a child steam pipework (21) and export the high steam pressing tube (20) be connected with compression set respectively, described purifier top is provided with condensed water import (10), connect another termination one water pump III (9) of pipeline of condensed water import, pump inlet connects the condensation-water drain (25) of drying equipment, washing carbonated drink outlet (16) water pump II (6) import of purifier, exit of pump connects a filter (39), filter outlet connects the washing carbonated drink import (11) of purifier, purifier establishes outer confession to wash carbonated drink import (27), outer confession is washed carbonated drink import and is connected in series a heater I (29), the dense of purifier washes carbonated drink water pump I (5), water pump I outlet is connected to immersion operation, the regeneration vapor outlet of purifier meets control valve group II (8), and the outlet of control valve group II (8) connects the regeneration vapor inlet (18) of compression set.
10. device systems according to claim 9, is characterized in that: purifier is steam jet ejector, and the import of the uperize of described steam jet ejector connects a temperature-sensing valve group, and the temperature-sensing valve group other end connects a superheater (32).
11., according to claim 9 device systems, is characterized in that: be connected in series a heater II (35) between the outlet of control valve group II (8) and the import of compression set.
12. device systems according to claim 9, is characterized in that: filter (39) outlet connects a valve (7), and the valve other end connects with flushing water import.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210585816.6A CN103891876B (en) | 2012-12-28 | 2012-12-28 | The evaporation vapour produced with steam drying Fodder and food and other material are carried out to method and the device systems thereof of recycle and reuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210585816.6A CN103891876B (en) | 2012-12-28 | 2012-12-28 | The evaporation vapour produced with steam drying Fodder and food and other material are carried out to method and the device systems thereof of recycle and reuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103891876A CN103891876A (en) | 2014-07-02 |
| CN103891876B true CN103891876B (en) | 2016-01-20 |
Family
ID=50983709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210585816.6A Active CN103891876B (en) | 2012-12-28 | 2012-12-28 | The evaporation vapour produced with steam drying Fodder and food and other material are carried out to method and the device systems thereof of recycle and reuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103891876B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235814A (en) * | 2014-10-09 | 2014-12-24 | 北京天达京丰技术开发有限公司 | Method for recycling unclean water vapor |
| CN106959022B (en) * | 2017-04-28 | 2023-03-14 | 布勒(常州)机械有限公司 | Water-steam separation type steam energy recovery system for feed production |
| CN108798621B (en) * | 2018-06-11 | 2020-03-17 | 西安交通大学 | Direct pressure supplementing type high-temperature steam circulating system |
| CN111174556A (en) * | 2020-02-12 | 2020-05-19 | 中国科学院理化技术研究所 | Vacuum Belt Drying System |
| CN112097469A (en) * | 2020-09-11 | 2020-12-18 | 湖南康洁食品科技发展有限公司 | Drying process and drying system for rice flour production line |
| CN113080369A (en) * | 2021-05-09 | 2021-07-09 | 曲阜市圣儒食品有限公司 | Flour steam crisp-opening process method for cakes |
| CN115183571A (en) * | 2022-07-07 | 2022-10-14 | 北京天达京丰技术开发有限公司 | Equipment and method for eliminating waste gas peculiar smell of tube bundle dryer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2570715Y (en) * | 2002-09-22 | 2003-09-03 | 朱杰 | Hot vapor continuous dehydrator |
| CN101915497A (en) * | 2010-08-13 | 2010-12-15 | 辽宁中田干燥设备制造有限公司 | Lignite-drying and quality-improving process for preparing superheated steam from waste heat steam |
| CN201774937U (en) * | 2010-08-18 | 2011-03-30 | 甘肃省机械科学研究院 | Steam and steam condensed water combined fruit and vegetable drying system |
| 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 |
-
2012
- 2012-12-28 CN CN201210585816.6A patent/CN103891876B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2570715Y (en) * | 2002-09-22 | 2003-09-03 | 朱杰 | Hot vapor continuous dehydrator |
| CN101915497A (en) * | 2010-08-13 | 2010-12-15 | 辽宁中田干燥设备制造有限公司 | Lignite-drying and quality-improving process for preparing superheated steam from waste heat steam |
| CN201774937U (en) * | 2010-08-18 | 2011-03-30 | 甘肃省机械科学研究院 | Steam and steam condensed water combined fruit and vegetable drying system |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103891876A (en) | 2014-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103891876B (en) | The evaporation vapour produced with steam drying Fodder and food and other material are carried out to method and the device systems thereof of recycle and reuse | |
| CN203058203U (en) | Evaporated steam recovery recycling equipment system | |
| CN104696938B (en) | Mechanical heating power compound type steamed vapour pressure compression system based on wastewater utilization | |
| CN109824238A (en) | A kind of coal-fired coupling sludge heating system and method | |
| CN203170030U (en) | System for recycling steam and concentrated steam washing water of steam heat source drying machine for primary-effect evaporator | |
| CN103770192B (en) | Chip washing flue gas processing device | |
| CN110319429B (en) | Industrial condensed water separation and recovery method and device thereof | |
| CN102748923B (en) | Method for drying coal slime | |
| CN209801928U (en) | Water atomization metal powder water bath drying system | |
| CN110564455B (en) | Fine slag drying method for coal gas device | |
| CN201195814Y (en) | Apparatus for extracting xylogen with zero discharge of papermaking black liquor | |
| CN109650695B (en) | Sludge drying device and sludge drying method | |
| CN103060498B (en) | Blast furnace cinder flushing water residual heat power generation system | |
| CN202449878U (en) | Methanol and waste water heat recovery system in trade mark material production | |
| CN210135559U (en) | Industrial condensed water separation and recovery device | |
| CN209123378U (en) | Heat energy recycling device of drying machine | |
| CN112624177B (en) | Energy-saving and environment-friendly combined circulating production line and production method | |
| CN219217929U (en) | Steam energy-saving control device applied to DTDC | |
| CN210945520U (en) | Fine slag drying system of coal gas making device | |
| CN107840515A (en) | Slag and grey water treatment system | |
| CN203820495U (en) | Energy-saving deoxidation system of industrial boiler | |
| CN219050811U (en) | Grading recovery system for medium-pressure steam tail gas of setting machine | |
| CN206245134U (en) | Nonwoven paper dryer condensed water afterheat recycling device | |
| CN206279171U (en) | A kind of sodium coal heating removing stove high and the integrating device in IGCC power stations | |
| CN206817432U (en) | A kind of WHRS device to be generated electricity using ardealite Sulphuric acid flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20140702 Assignee: BEIJING TIANLAN HUAXING ENERGY TECHNOLOGY CO., LTD. Assignor: BEIJING TIANDA JINGFENG TECHNOLOGY DEVELOPMENT CO., LTD. Contract record no.: 2018110000011 Denomination of invention: Method for recycling evaporated steam generated by performing steam drying on grains and feed and other materials and equipment system thereof Granted publication date: 20160120 License type: Exclusive License Record date: 20180330 |
|
| EE01 | Entry into force of recordation of patent licensing contract |