CN102249055A - Recycling process of hot and humid air generated in wheat processing - Google Patents
Recycling process of hot and humid air generated in wheat processing Download PDFInfo
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- CN102249055A CN102249055A CN2011100516647A CN201110051664A CN102249055A CN 102249055 A CN102249055 A CN 102249055A CN 2011100516647 A CN2011100516647 A CN 2011100516647A CN 201110051664 A CN201110051664 A CN 201110051664A CN 102249055 A CN102249055 A CN 102249055A
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Abstract
The invention relates to a recovery process of energy and materials generated in wheat processing, and provides a recycling process of hot and humid air generated in wheat processing, which is used for adjusting moisture and temperature of wheat. In the process, the hot and humid air generated in procedures such as a production or domestic boiler of a wheat processing enterprise, pneumatic transmission in a production workshop, bran drying, food processing and the like is separately conveyed to wheat bind or conveyed to the bins after being collected and mixed, and then wheat in a wheat wetting bin or clean wheat bin is heated and humidified. By utilizing the recycling process, the energy is utilized maximally so as to realize cyclic economy, wheat wetting time is shortened, bin capacity is reduced, and meanwhile product quality and flour yield are improved.
Description
Technical field
The present invention relates to the damp-heat air reuse technology that produces in a kind of wheat processing process, particularly the damp-heat air that reclaims is applied to wheat water content and thermoregulator technology.
Background technology
In flour processing enterprise, the wheat processing technological process comprises mainly that wheat cleaning, moisture are regulated, wheat is milled, clear powder and screen, product are collected and operations such as packing.Wherein, the wheat back material of milling must be promoted to square plansifter and carries out screen through air-transport system.The damp-heat air that process of pneumatic transmission produced in the prior art, after being transferred material and separating, passages through which vital energy circulates is broken through the direct exhaust to atmosphere of filter.
In the wheat mill processes, for satisfying the flouring technology needs, the moisture distribution ratio of wheat cortex and endosperm is generally 1.1-1.5: 1, and the wheat bran moisture requirement is equal to or less than flour moisture, in order to satisfy wheat flour milling technology and wheat bran moisture requirement simultaneously, generally take to be undertaken after moisture regulates, reduce the moisture of wheat bran again by the wheat bran drying system by the flouring technology requirement.And the damp-heat air that existing wheat bran drying system produces, after wheat bran separated, passages through which vital energy circulates was broken through the direct exhaust to atmosphere of filter.
In flour processing enterprise, generally all have several vermicelli (or instant noodles, steamed bun, food) manufacturing line, the direct exhaust to atmosphere of damp-heat air that oven dry (or steaming) process produces.
The damp-heat air that above link produces, because moisture wherein and heat all are difficult to utilize under prior art and conventional thought, generally not can take into account recycling, existing installation technology does not possess the reuse condition yet, this has just caused the waste of a large amount of heat energy and moisture, product that the while part producing goes out such as flour etc. also can be discharged thereupon, cause unnecessary waste, therefore how to utilize this resource to become problem demanding prompt solution now.
In the wheat flour milling process, in order to improve flour quality and flour extraction, reduce the mill processes consumption of power, need to carry out moisture after wheat is once cleared up and regulate.Existing moisture regulative mode generally adopts wheat to add behind the water method of wheat wetting (leave standstill and deposit) in wheat bin, to realize moisture rectangular distribution in wheat seed, and according to wheat quality, ambient temperature and humidity and capacity condition, the general 18-48 of tempering time hour.For satisfying the technological requirement that wheat cortex moisture is higher than endosperm moisture, generally once spraying after the secondary cleaning adds water again.
In the winter time, the early spring, season in late autumn because cold weather, moisture is difficult to infiltration, fully permeates and is evenly distributed in order to guarantee wheat endosperm internal moisture, tempering time needs to prolong greatly; Simultaneously, the environmental drying in this season causes the wheat cortex to be lower than endosperm moisture because of water loss, goes into the preceding spray damping of mill processing and can not fully absorb in the short time again, attached to the wheat surface, does not have due effect.Some flour processing enterprise is in order to reduce the influence of ambient temperature and humidity to the powder process effect as far as possible, adopts wheat bin to add (guarantors) temperature, wheat and heats up, adds method such as hot water and carry out the moisture adjusting of wheat.Build and equipment investment but these methods not only increase, and need to consume a large amount of energy increase productive costss.
Because ambient temperature is low, wheat cortex toughness reduces, with the endosperm separating process in broken easily, not only increased operation easier, and influence wheat flour milling system balance and product design, the increase energy consumption.
Summary of the invention
The waste of many drawbacks that exist at prior art and the resource of bringing, the invention provides a kind of wheat processing process damp-heat air reuse technology and be used for wheat water content and adjustment, it is the damp-heat air that operations such as the production of wheat processing enterprise or boiler for domestic, the conveying of workshop strength, wheat bran oven dry, food processing are produced, be transported to wheat bin separately or after collecting mixing, wheat in wheat wetting storehouse or the clean wheat bin is carried out the technology of heating and moistening, after adopting this technology, realized the maximum using and the recycling economy of energy; Shorten the required time of wheat wetting, reduced capacity; Improve the quality and the flour extraction of product, reduced energy consumption.
Concrete technical scheme of the present invention is: after adopting the collection mixer to collect the damp-heat air in the wheat processing process, adopt the manifold trunk and the arm that puts in storage to be back in the wheat bin wheat is carried out heating and moistening;
More specifically, be with the damp-heat air in the wheat processing process by collect mixer collect mix after, enter manifold trunk and the arm that puts in storage, and finally be back in the wheat bin wheat is carried out heating and moistening by dispensing branch;
Damp-heat air in the described wheat processing process derives from the damp-heat air that contains low amounts of dust that the workshop strength carries the wind net to be discharged;
Or the wheat bran drying system damp-heat air that contains low amounts of dust of being discharged;
Or food production line, dry or steam the wet-hot steam that process is discharged;
Or above-mentioned compound.
Wherein, damp-heat air source in the wheat processing process that is adopted, mainly considered to be easy to generate damp-heat air in each production technology of existing wheat processing enterprise, and be easy to generate the production process of damp-heat air waste, with the damp-heat air that is wherein produced, after collecting and regulate its wind speed air quantity by independent gathering-device, be back in the wheat bin, wheat is carried out heating and moistening by the arm that puts in storage.Except above-mentioned damp and hot resource, the wet-hot steam that can also adopt the enterprise's production or the used heating system of living to discharge, thus realize maximized utilization of resource and recycling economy.
Concrete scheme is as follows:
Damp-heat air or steam with the above-mentioned former exhaust to atmosphere of operation, after collecting mixer collection mixing, enter manifold trunk, consistent for guaranteeing in arm that each position of manifold trunk picks out and the manifold trunk wind speed everywhere, the diameter of manifold trunk does not wait, the end diameter minimum, its terminal top diameter is slightly larger than the arm diameter that puts in storage, and is generally 120-350mm.Wind speed generally is equal to or less than former wind net outlet wind speed at 10-20m/s in the manifold trunk.When being higher than former wind net outlet wind speed, increase the working stability that can influence former wind net because of resistance; Cross when low when wind speed,, influence the heating and moistening effect because bite is low excessively.
According to position, quantity and the specification of wheat bin, opening picks out the arm that puts in storage in the relevant position of manifold trunk.The diameter of arm of putting in storage is determined according to the specification of manifold trunk and calculation of parameter, diameter is generally 80-300mm, wind speed is determined concrete parameter than the feeding mode that in addition the low 2-10m/s of manifold trunk wind speed also needs to look the arm that puts in storage in the pipe, the arm that puts in storage can feed at the bottom of Cang Ding or storehouse, and concrete length is determined according to the wheat bin height; When independent use workshop strength is carried or during the damp-heat air of wheat bran baking operation, general preferred employing feeds the mode of wheat bin from Cang Ding, and generally 0.5-1m at the bottom of the storehouse of arm bottom puts in storage when adopting this mode; When the damp-heat air outside the use workshop, general preferred employing feeds the mode of wheat bin at the bottom of the storehouse, put in storage when adopting this mode the arm top apart from the storehouse at the bottom of 0.3m-push up 2m apart from the storehouse, when adopting this mode, also can select for use dispensing branch is not set, the arm that only needs to put in storage directly feeds at the bottom of the storehouse, make its top apart from the storehouse at the bottom of 1-2m get final product, can directly realize the rising diffusion that damp-heat air is self-service like this, cost-cutting; Feed no matter select for use from Cang Ding or at the bottom of the storehouse, wind speed is than the still low 2-10m/s of manifold trunk wind speed in the arm pipe that puts in storage.
In order to make damp-heat air diffusion fully in wheat bin, on the arm that puts in storage, pick out some dispensing branch, wherein the spread pattern of dispensing branch: spiral, single row type, double-row type, many rows formula by different spread patterns.Have when double-row type or many rows formula and just be listed as and two kinds of stagger arrangement;
The diameter of dispensing branch determines that according to the diameter calculating of the arm that puts in storage diameter is generally 80-150mm, and wind speed is at 1-6m/s in the pipe.
The length of dispensing branch is definite according to the sectional area of wheat bin, is heated evenly everywhere with wheat bin to be as the criterion.
The quantity of dispensing branch determines that according to the height of wheat bin two arm perpendicular separations are that 500-2000mm is advisable.
Dispensing branch is the 20-70 degree with the angle of arm of putting in storage, and fully damp-heat air is sent into wheat bin, it is damp and hot to make in the wheat bin that the wheat of each position can both fully obtain, thereby realizes balanced the distribution, improves the quality and the flour extraction of product, reduces consumption of power.
Arm and dispensing branch directly enter wheat bin owing to put in storage, with the wheat direct contact, and need to carry damp-heat air, therefore need select anticorrosion, antirust, wear-resisting, free of contamination material especially for use, generally can adopt stainless steel tube, galvanized pipe, galvanized iron pipe, non-toxic plastic pipe etc.
Damp-heat air is transported to each arm through collecting the mixer distribution, except regulating the air quantity by regulating the arm diameter, can also adjust intake by arm inlet adjusting valve, on the collection mixer, also be connected with external heat source or humidification source simultaneously, like this when the damp and hot resource of above-mentioned circulation can not satisfy heating and moistening and requires, can use outer heating (wetting) source to replenish, to satisfy the requirement of technology by collecting mixer.Simultaneously, collecting mixer can be dynamic impeller adding pressure type (induced draft fan of respective model for example is installed), does not influence on the basis of leading portion normal operation in assurance, regulates the back segment working parameter accurately and effectively.
For collecting mixer, can directly adopt the positive displacement of not establishing impeller, independent recovery bin just, it can also be above-mentioned dynamic impeller adding pressure type, specifically can adopt the vane type recovery bin of establishing impeller, by the impeller rotation, damp-heat air direct absorption from the outer heat-extraction system of each operation come.According to actual needs, turbomixer is divided into: unpowered mixing naturally and dynamic pressurization mix two kinds.For guaranteeing leading portion working stability and last part technology effect, should collect mixer by first-selected dynamic impeller adding pressure type, big in leading portion operation storage level, need to collect that damp and hot source category is less, fed distance is short, under the situation of wheat bin negligible amounts, can adopt positive displacement or unpowered vane type to collect mixer.
After adopting this technology, obtained following effect:
1. the damp-heat air of operations generations such as enterprise's boiler, strength conveying, wheat bran oven dry, food processing does not efflux, and regulates operation but be back to wheat processing moisture, to the interior wheat heating and moistening in wheat wetting storehouse (or clean wheat bin), realizes recycling economy.
2. the damp-heat air malleation is transported to each position of wheat bin, quickens the distribution of moisture between wheat seed inside and dung heap, shortens tempering time, saves capacity.
3. strengthen the toughness of wheat cortex, make that the wheat endosperm is easier to be peeled off with cortex, reduce the fragmentation of pulverizing process, reduce consumption of power, improve the quality of products and flour extraction the wheat cortex.
4. wheat bran oven dry, strength are carried that contained a small amount of flour filters in the damp-heat air of discharging, sedimentation is reclaimed, both reduced the environmental pollution that causes in the direct exhaust to atmosphere, the resource of saving food again increases social benefit and business economic benefit.
Description of drawings
Fig. 1 feeds scheme drawing for the wheat processing process damp-heat air reuse technology of the present invention arm Cang Ding that puts in storage;
Fig. 2 feeds scheme drawing at the bottom of the arm storehouse for wheat processing process damp-heat air reuse technology of the present invention puts in storage;
Fig. 3 is the manifold trunk and a structural representation that reaches dispensing branch that puts in storage;
Fig. 4 is the manifold trunk structural representation that is provided with behind the impeller;
1 is the wheat wetting storehouse among the figure, and 2 is clean wheat bin, and 3 is pulse dust collector, and 4 is blower fan, and 5 is temperature booster, 6 is feeder, and 7 is discharger, and 8 are strength conveying wind net, and 9 for collecting mixer, and 10 is manifold trunk, 11 for regulating butterfly valve, and 12 for putting in storage arm, and 13 is dispensing branch, and 14 is impeller;
A is that strength is carried the wind net, and B is a wheat bran oven dry wind net.
The specific embodiment
Embodiment 1
A kind of wheat processing process damp-heat air reuse technology, its processing step following (with 200 tons of day processing wheats, the wheat wetting storehouse of 4 3m * 3m * 18m, 1 diameter 2m, the clean wheat bin of high 3m, 1 group is carried the wind net is the example explanation):
1. strength is carried the damp-heat air of the former exhaust to atmosphere of wind net, change into collection mixer 9 (this mixer adopts dynamic impeller adding pressure type, power disposition 5.5kw), enter manifold trunk 10 (the diameter at butt end 600mm of manifold trunk then, top diameter 200mm, length 12m), wind speed 16m/s in the pipe;
2. corresponding position on the manifold trunk in 1 centre, wheat wetting storehouse, opening picks out the arm 12 that puts in storage.The put in storage diameter 150mm of arm, length 17m, wind speed 12m/s in the pipe, the position of being convenient at the place of putting in storage to operate is provided with adjusting butterfly valve 11;
3. pick out 11 dispensing branch 13 by spiral on the arm that puts in storage, dispensing branch 13 is 60 degree with the angle of the arm 12 that puts in storage, the length 1m of dispensing branch 13, two arm angles, 90 degree, spacing 1.5m, the about 3-4m/s of wind speed in the pipe;
4. result's test: 8 ℃ of workshop condition temperature, humidity 20%; 29 ℃ of wind net air outlet temperature, humidity 56%; Behind 30 hours wheat wettings, it is as follows that leading indicator detects comparative result respectively:
Known by table: after adopting the technology of the present invention, leading indicators such as output, quality, flour extraction all increase substantially, and power consumption obviously reduces, and has saved the energy and has highlighted huge economic benefit and social benefit.
A kind of wheat processing process damp-heat air reuse technology, its processing step following (with 300 tons of day processing wheats, the wheat wetting storehouse of 8 2m * 3m * 18m, 1 diameter 2m, the clean wheat bin of high 3m):
1. with the damp-heat air of former exhaust to atmosphere between food car, introduce and collect mixer (this mixer adopts dynamic impeller adding pressure type, power disposition 5.5kw), enter manifold trunk (the diameter at butt end 500mm of manifold trunk then, top diameter 300mm, length 14m), wind speed 12m/s in the pipe;
2. corresponding position on the wheat wetting storehouse bottom centre cooresponding manifold trunk in position, opening picks out the arm that puts in storage.The put in storage diameter 200mm of arm, length 1.5m, wind speed 10m/s in the pipe, the position of being convenient at the place of putting in storage to operate is provided with the adjusting butterfly valve;
3. in the arm exit of putting in storage one umbrella shape case is set, case not only guarantees that damp-heat air sheds smoothly but also prevents that wheat from entering in the pipe from the arm outlet 120mm that puts in storage;
4. result's test: 12 ℃ of workshop condition temperature, humidity 25%; Enter 36 ℃ of the temperature of workshop damp-heat air, humidity 55%; Behind 30 hours wheat wettings, it is as follows that leading indicator detects comparative result respectively:
Known by table: after adopting the technology of the present invention, leading indicators such as output, quality, flour extraction all increase substantially, and power consumption obviously reduces, and has saved the energy and has highlighted huge economic benefit and social benefit.
A kind of wheat processing process damp-heat air reuse technology, its processing step following (with 200 tons of day processing wheats, the wheat wetting storehouse of 4 3m * 3m * 17m, 1 diameter 2m, the clean wheat bin of high 2.6m is carried the wind net for 1 group, 1 group of wheat bran drying system is the example explanation):
1. strength is carried the damp-heat air of wind net and the former exhaust to atmosphere of wheat bran drying system, change that (this mixer adopts dynamic impeller adding pressure type into the collection mixer, power disposition 7.5kw), enter manifold trunk (the diameter at butt end 650mm of manifold trunk then, top diameter 200mm, length 15m), wind speed 18m/s in the pipe;
2. corresponding position on the manifold trunk in centre, wheat wetting storehouse, opening picks out the arm that puts in storage.The put in storage diameter 160mm of arm, length 16m, wind speed 12m/s in the pipe, the position of being convenient at the place of putting in storage to operate is provided with the adjusting butterfly valve;
3. pick out ten dispensing branch by spiral on the arm that puts in storage, dispensing branch is 70 degree with the angle of the arm that puts in storage, the length 1.1m of dispensing branch, two arm angles, 100 degree, spacing 1.4m, wind speed 2-3.5m/s in the pipe;
4. result's test: 10 ℃ of workshop condition temperature, humidity 17%; 28 ℃ of wind net air outlet temperature, humidity 52%; 45 ℃ of wheat bran drying system air outlet temperature, humidity 58%, behind 30 hours wheat wettings, it is as follows that leading indicator detects comparative result respectively:
Known by table: after adopting the technology of the present invention, leading indicators such as output, quality, flour extraction all increase substantially, and power consumption obviously reduces, and has saved the energy and has highlighted huge economic benefit and social benefit.
Embodiment 4
A kind of wheat processing process damp-heat air reuse technology, its processing step is following (with 300 tons of day processing wheats, the wheat wetting storehouse of 8 2m * 3m * 18m, 1 diameter 2m, the clean wheat bin of high 3m is carried the wind net for 2 groups, 1 group of wheat bran drying system, 1 group of biscuit processing drying production line is the example explanation):
1. strength is carried the damp-heat air of the former exhaust to atmosphere of wind net and wheat bran drying system and biscuit processing drying production line, change that (this mixer adopts dynamic impeller adding pressure type into the collection mixer, power disposition 11kw), enter manifold trunk (the diameter at butt end 750mm of manifold trunk then, top diameter 220mm, length 19m), wind speed 19m/s in the pipe;
2. corresponding position on the manifold trunk in centre, wheat wetting storehouse, opening picks out the arm that puts in storage.The put in storage diameter 180mm of arm, length 17m, wind speed 16m/s in the pipe, the position of being convenient at the place of putting in storage to operate is provided with the adjusting butterfly valve;
3. pick out 14 dispensing branch by spiral on the arm that puts in storage, dispensing branch is 40 degree with the angle of the arm that puts in storage, the length 1.2m of dispensing branch, two arm angles, 90 degree, spacing 1.3m, wind speed 4-6m/s in the pipe;
4. result's test: 10 ℃ of workshop condition temperature, humidity 17%; 28 ℃ of wind net air outlet temperature, humidity 45%; 40 ℃ of wheat bran drying system air outlet temperature, humidity 55%; 46 ℃ of biscuit processing drying production line air outlet temperature, humidity 45%; Behind 30 hours wheat wettings, it is as follows that leading indicator detects comparative result respectively:
Known by table: after adopting the technology of the present invention, leading indicators such as output, quality, flour extraction all increase substantially, and power consumption obviously reduces, and has saved the energy and has highlighted huge economic benefit and social benefit.
Claims (10)
1. a wheat processing process damp-heat air reuse technology is characterized in that: after adopting the collection mixer to collect the damp-heat air in the wheat processing process, adopt the manifold trunk and the arm that puts in storage to be back in the wheat bin wheat is carried out heating and moistening;
Damp-heat air in the described wheat processing process derives from the damp-heat air that contains low amounts of dust that the workshop strength carries the wind net to be discharged;
Or the wheat bran drying system damp-heat air that contains low amounts of dust of being discharged;
Or food production line, dry or steam the wet-hot steam that process is discharged;
Or above-mentioned compound.
2. reuse technology according to claim 1 is characterized in that: the damp-heat air that described damp-heat air can also adopt enterprise to produce or the used heating system of living is discharged.
3. reuse technology according to claim 1 and 2 is characterized in that: described damp-heat air enters trunk line by collecting mixer, is distributed the arm that puts in storage that enters each wheat bin by trunk line; The described arm that puts in storage feeds at the bottom of Cang Ding or storehouse.
4. reuse technology according to claim 1 and 2 is characterized in that: also be connected with external heat source or humidification source on the described collection mixer; Described collection mixer is divided into positive displacement or vane type.
5. reuse technology according to claim 4 is characterized in that: turbomixer adopts unpowered the mixing naturally or dynamic pressurization mixing.
6. reuse technology according to claim 3 is characterized in that: the described arm that puts in storage is provided with dispensing branch.
7. reuse technology according to claim 1 is characterized in that: wind speed is 10-20m/s in the described manifold trunk; Terminal top diameter is 120-350mm.
8. reuse technology according to claim 1 is characterized in that: the described arm that puts in storage is when Cang Ding feeds, and the diameter of arm is 80-200mm, and wind speed is than the low 2-10m/s of manifold trunk wind speed in the pipe; Its bottom apart from the storehouse at the bottom of 0.5-1.5m.
9. reuse technology according to claim 1 is characterized in that: when the described arm that puts in storage fed at the bottom of the storehouse, the diameter of arm was 100-300mm, and wind speed is than the low 2-10m/s of manifold trunk wind speed in the pipe; Put in storage the arm top apart from the storehouse at the bottom of 0.3m-push up 2m apart from the storehouse.
10. reuse technology according to claim 6 is characterized in that: the spread pattern of described dispensing branch is spiral or single row type or double-row type or many rows formula.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110051664 CN102249055B (en) | 2011-03-04 | 2011-03-04 | Recycling process of hot and humid air generated in wheat processing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110051664 CN102249055B (en) | 2011-03-04 | 2011-03-04 | Recycling process of hot and humid air generated in wheat processing |
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| CN102249055A true CN102249055A (en) | 2011-11-23 |
| CN102249055B CN102249055B (en) | 2013-04-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1980002573A1 (en) * | 1979-05-15 | 1980-11-27 | C Larsson | A method and an arrangement for storing organic fibrous material in a stack |
| CN2862658Y (en) * | 2005-04-05 | 2007-01-31 | 国家粮食储备局无锡科学研究设计院 | Grain storage ventilating and adjusting implement |
| CN201352047Y (en) * | 2008-12-24 | 2009-11-25 | 王莹 | Energy-saving automatic baking equipment |
| CN101744046A (en) * | 2010-01-20 | 2010-06-23 | 华南农业大学 | High humidity grain dryer |
| CN201617133U (en) * | 2009-12-31 | 2010-11-03 | 河南农业大学 | Drying system for drying grain |
| CN201709379U (en) * | 2010-06-23 | 2011-01-19 | 湖南省烟草公司衡阳市公司 | Bulk curing barn waste heat utilization device |
-
2011
- 2011-03-04 CN CN 201110051664 patent/CN102249055B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1980002573A1 (en) * | 1979-05-15 | 1980-11-27 | C Larsson | A method and an arrangement for storing organic fibrous material in a stack |
| CN2862658Y (en) * | 2005-04-05 | 2007-01-31 | 国家粮食储备局无锡科学研究设计院 | Grain storage ventilating and adjusting implement |
| CN201352047Y (en) * | 2008-12-24 | 2009-11-25 | 王莹 | Energy-saving automatic baking equipment |
| CN201617133U (en) * | 2009-12-31 | 2010-11-03 | 河南农业大学 | Drying system for drying grain |
| CN101744046A (en) * | 2010-01-20 | 2010-06-23 | 华南农业大学 | High humidity grain dryer |
| CN201709379U (en) * | 2010-06-23 | 2011-01-19 | 湖南省烟草公司衡阳市公司 | Bulk curing barn waste heat utilization device |
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