CN104048495A - Waste heat recovery system in grain and oil squeezing process - Google Patents
Waste heat recovery system in grain and oil squeezing process Download PDFInfo
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- CN104048495A CN104048495A CN201410268534.2A CN201410268534A CN104048495A CN 104048495 A CN104048495 A CN 104048495A CN 201410268534 A CN201410268534 A CN 201410268534A CN 104048495 A CN104048495 A CN 104048495A
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- heat exchanger
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- grain
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to a waste heat recovery system in a grain and oil squeezing process. The system is an energy-saving and environmental-friendly system mainly applied to waste heat recovery in bean pulp steaming-separating and pre-squeezing workshop sections for lowering steam energy consumption in the process and reducing the emission of N-hexane, dust and CO2. The system comprises a heat exchanger, wherein the front of the heat exchanger is provided with a fresh air inlet, the rear of the heat exchanger is provided with a fresh air outlet, the fresh air inlet is connected with an air outlet of a fresh air fan by a pipeline, the fresh air outlet is connected with an inlet of a steam heater by a pipeline, and an outlet of the steam heater is communicated with an air inlet of a bean pulp steaming-separating machine. After grain and oil squeezing is performed by the waste heat recovery system, waste heat recovery can be effectively realized, the production energy consumption and equipment replacement cost are reduced, and the aims of energy conservation and environment protection are achieved.
Description
Technical field
The present invention relates to the residual neat recovering system in a kind of grain and oil expressing process, be mainly used in dregs of beans and steam the waste heat recovery in Tuo Jiyuzha workshop section, to reduce the steam energy consumption in this technique, reduce the discharge of n-hexane and dust, reduce the energy-conserving and environment-protective system of CO2 discharge.
Background technology
In the process of the grain and oil processing of China, need to use a large amount of Steam Heating air in soybean squeezing process, the purging by hot-air dewaters dregs of beans, outside the direct drain chamber of its used heat air.In the pre-squeezing of soybean and dregs of beans Zheng Tuo workshop section, there is similar situation.
In this type of process system, exist following deficiency:
(1) production cost
In soybean expressing process, wherein having an operation is that dregs of beans steaming is de-.According to the height of soybean institute water content, needing the hot blast of 80---120 degree different temperatures to go to purge steams the part of dewatering, with the waste gas that moisture content and a small amount of solvent are also held under the arm about 80 of assorted dust is spent in a large number, has directly entered atmosphere.
In the production cost of oil pressing mill, the energy consumption cost of steam has just accounted for 45%, squeezes soybean per ton and needs 14.7kg steam.
(2) environmental problem
1. in whole production process, constantly there is all the time the waste gas with 60---80 degree left and right temperature to enter in atmosphere, increased the heat of natural environment, form hot dirt;
In waste gas also with a large amount of water vapours and a small amount of solvent, surrounding environment is caused to dirt;
3. the waste gas after evapo-separated machine makes dregs of beans dehydration, although be by cyclone separator, dregs of beans dust to be removed, also have a small amount of dust to be carried under one's arms and in waste gas, gives off system.
So the discharge of this waste gas, causes dirt for its environment around, makes the new wind that system sucks have dirt, and its production system and equipment are caused to adverse influence.
(3) plant issue
Gas discharges the dirt causing to surrounding environment, makes the new wind relative humidity of suction of system fan larger, also with micro-n-hexane and dust.
Dust can be bonded on steam heater, and the time one, long meeting form dirt on tube wall, and heat transfer coefficient is declined, and heater heat exchange efficiency declines, and increases the use amount of steam, finally increases production cost; So in actual use, operations staff understands water and removes flushing heat exchanging device, has not only wasted water resource and also can accelerate the corrosion of heat exchanger, shortens the service life of heat exchanger, has also increased production cost.
N-hexane in gas-liquid two-phase can produce corrosion to equipment.In the new wind sucking, contain micro-solvent droplets, through heater, be heated while being gasificated into gas, its corrosivity of n-hexane is now maximum, so the steam heater of carbon steel is caused to certain corrosion, also will shorten its service life.
If steam heater is corroded, cause steam leakage, operating personnel do not find again in time, thereby steam will enter the humidity that air side can increase air, to the disadvantageous factor of the dry formation of dregs of beans.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, residual neat recovering system in a kind of grain and oil expressing process simple in structure, ingenious, rational is provided, use this residual neat recovering system to carry out grain and oil squeezing, can effectively realize waste heat recovery, reduce energy consumption and equipment replacement cost, reach the object of energy-saving and environmental protection.
According to technical scheme provided by the invention: the residual neat recovering system in a kind of grain and oil expressing process, be characterised in that: comprise heat exchanger, in described heat exchanger front portion, fresh inlet is set, new wind outlet is set at the rear portion of heat exchanger, fresh inlet is connected with the air outlet of new wind blower fan by pipeline, new wind outlet is connected with the import of steam heater by pipeline, the outlet of described steam heater is connected with dregs of beans evapo-separated machine air inlet, the outlet of dregs of beans evapo-separated machine is connected with circulation airduct, on described circulation airduct, along air-out direction, be provided with successively cyclone separator, the 5th thermometer, circulation airduct end is connected with filtration airduct by threeway, exhaust airduct, described filtration airduct is connected with the hot blast import of heat exchanger, and along air intake direction, be connected with filter air-valve at filtration airduct in turn, automatic cleaning strainer, the 6th thermometer, the hot blast air outlet of heat exchanger is connected with exhaust airduct by circulating line, described exhaust airduct is provided with exhaust air-valve.
As a further improvement on the present invention, described heat exchanger comprises heat exchanger body, and described heat exchanger body one end is connected with access door, and on described access door, manhole is set, and the centre of gyration of described access door forms fresh inlet; In the described heat exchanger body other end, be formed centrally hot blast import, corresponding to the end face of described hot blast import, be provided with new wind outlet; Described heat exchanger body end face is provided with hot-blast outlet, in heat exchanger body bottom, is provided with some drainpipes.
As a further improvement on the present invention, described automatic cleaning strainer top is provided with inspection socket, in automatic cleaning strainer one side, be provided with sight glass with scraping device, on automatic cleaning strainer, a side relative to sight glass with scraping device is provided with two spray headers, on the water pipe between two spray headers, be provided with screen pack, on described automatic cleaning strainer, be also provided with two water delivery nozzles.
As a further improvement on the present invention, described automatic cleaning strainer is connected on filter airduct by filter air inlet, filter air outlet.
As a further improvement on the present invention, described heat exchanger bottom is provided with drainpipe.
As a further improvement on the present invention, between described new wind blower fan and heat exchanger, on pipeline, be connected with the first thermometer.
As a further improvement on the present invention, between described heat exchanger and steam heater, pipeline is provided with the second thermometer; Between described steam heater and dregs of beans evapo-separated machine, be provided with the 3rd thermometer; On the outlet conduit of described dregs of beans evapo-separated machine, be connected with the 4th thermometer.
The present invention compared with prior art, advantage is: product of the present invention has carried out effective improvement for the deficiency of existing squeezing system, during use, can utilize the preheating of air draft to heat new wind, effectively reduce the steam use amount of steam heater, reduce hot driving; Heat exchanger in product of the present invention need not consume any energy, has really realized the recycling of the energy, thereby has effectively reduced the discharge of carbon dioxide; For the stability of further enhancing system and guarantee to pass back into the air quality of heat exchanger, in system, also configured automatic cleaning strainer, can effectively extend the service life of heat exchanger, guarantee the continuous reliability service of system; In order to realize the accurate understanding for system works situation, at the cold-hot wind of heat exchanger, import and export thermometer is all housed, can accurately understand in real time the ruuning situation of heat exchanger; In heat exchanger bottom, drainpipe is set, realizes the object that condensed water is effectively discharged; By above-mentioned technological improvement, realize the object of the air filtration of this product collection, heating, air-supply and one, and operation simple, be convenient to grasp.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of heat exchanger.
Fig. 3 is the scheme of installation of heat exchanger.
Fig. 4 is the structural representation of automatic cleaning strainer.
Fig. 5 is the upward view of Fig. 4.
The specific embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
As shown in Fig. 1 ~ 5, comprise new wind blower fan 1, the first thermometer 2, fresh inlet 3, heat exchanger 4, new wind outlet 5, the second thermometer 6, steam heater 7, the 3rd thermometer 8, dregs of beans evapo-separated machine 9, the 4th thermometer 10, cyclone separator 11, the 5th thermometer 12, exhaust air-valve 13, filter air-valve 14, filter air inlet 15, automatic cleaning strainer 16, filter air outlet 17, the 6th thermometer 18, hot blast import 19, hot-blast outlet 20, the 7th thermometer 21, drainpipe 22, exhaust airduct 23, heat exchanger body 24, filter airduct 25, circulation airduct 26, access door 27, inspection opening 28, spray header 29, base support 30, inspection socket 31, sight glass with scraping device 32, water delivery nozzle 33, screen pack 34 etc.
As shown in Figure 1, residual neat recovering system in a kind of grain and oil expressing process of the present invention, comprise heat exchanger 4, in described heat exchanger 4 front portions, fresh inlet 3 is set, new wind outlet 5 is set at the rear portion of heat exchanger 4, fresh inlet 3 is connected with the air outlet of new wind blower fan 1 by pipeline, new wind outlet 5 is connected with the import of steam heater 7 by pipeline, the outlet of described steam heater 7 is connected with dregs of beans evapo-separated machine 9 air inlets, the outlet of dregs of beans evapo-separated machine 9 is connected with circulation airduct 26, on described circulation airduct 26, along air-out direction, be provided with successively cyclone separator 11, the 5th thermometer 12, circulation airduct 26 ends are connected with and are filtered airduct 25 by threeway, exhaust airduct 23, described filtration airduct 25 is connected with the hot blast import 19 of heat exchanger 4, and along air intake direction, be connected with filter air-valve 14 at filtration airduct 25 in turn, automatic cleaning strainer 16, the 6th thermometer 18, by the 6th thermometer 18, measure the leaving air temp of filter 4, the hot blast air outlet 20 of heat exchanger 4 is connected with exhaust airduct 23 by circulating line, and described exhaust airduct 23 is provided with exhaust air-valve 13, controls air draft move towards by exhaust air-valve 13.
As shown in Figure 2, described heat exchanger 4 comprises heat exchanger body 24, and described heat exchanger body 24 one end are connected with access door 27, and on described access door 27, manhole 28 are set, and the centre of gyration of described access door 27 forms fresh inlet 3; In described heat exchanger body 24 other ends, be formed centrally hot blast import 19, corresponding to the end face of described hot blast import 19, be provided with new wind outlet 5; Described heat exchanger body 24 end faces are provided with hot-blast outlet 20, in heat exchanger body 24 bottoms, are provided with some drainpipes 22, guarantee that the condensed water in hot-air can be discharged in time.
As shown in 3, heat exchanger 4 is installed on base support 30 in use, need when mounted to guarantee heat exchanger 4 corresponding to drainpipe 22 1 sides in lower position, so that condensed water can effectively flow out.
As shown in Figure 4, described automatic cleaning strainer 16 tops are provided with inspection socket 31, in automatic cleaning strainer 16 1 sides, be provided with sight glass with scraping device 32, on automatic cleaning strainer 16, a side relative to sight glass with scraping device 32 is provided with two spray headers 29, on the water pipe between two spray headers 29, be provided with screen pack 34, on described automatic cleaning strainer 16, be also provided with two water delivery nozzles 33.
As shown in Figure 5, described automatic cleaning strainer 16 is connected on filter airduct 25 by filter air inlet 15, filter air outlet 17.
Described heat exchanger 4 bottoms are provided with drainpipe 22, and the condensed water producing in heat exchanger 4 courses of work is discharged by drainpipe 22.
Between described new wind blower fan 1 and heat exchanger 4, on pipeline, be connected with the first thermometer 2, by the first thermometer 2, measure the new air temperature of import department of heat exchanger 4.
Between described heat exchanger 4 and steam heater 7, pipeline is provided with the second thermometer 6, by the second thermometer 6, measures new wind outlet temperature; Between described steam heater 7 and dregs of beans evapo-separated machine 9, be provided with the 3rd thermometer 8, the new air temperature of measuring after Steam Heating by the 3rd thermometer 8; On the outlet conduit of described dregs of beans evapo-separated machine 9, be connected with the 4th thermometer 10, the delivery temperature of measuring after dregs of beans evapo-separated machine 9 by the 4th thermometer 10.
The operation principle of product of the present invention is as follows: hot blast enters heat exchanger 4 by hot blast import 19, transfers heat to after new wind, by hot-blast outlet 20, is discharged, and the condensed water forming in hot blast is discharged by drainpipe 22; New wind enters heat exchanger 4 by fresh inlet 3, after the heat that absorption hot blast side transmits, by new wind outlet 5, is discharged.
The course of work of product of the present invention is as follows: air intake enters into heat exchanger 4 through new wind blower fan 1, after heating, by airduct, enter steam heater 7 and be heated to specified temp, after dregs of beans evapo-separated machine 9, enter cyclone separator 11, through filter air-valve 14, enter filter air inlet 15 and enter into automatic cleaning strainer 16, then enter heat exchanger 4 to new wind heating.When heat exchanger 4 needs maintenance or cleans, filter air inlet air valve is closed, and hot blast is directly got rid of by exhaust air-valve 13.
Enter the hot blast of heat exchanger 4, the condensed water producing in heat transfer process is directly discharged from heat exchanger 4 bottom discharge pipes 22.
Dregs of beans evapo-separated machine 9 in the present invention is matured product, the DTDC evapo-separated machine that sampling selects Zhengzhou four-dimensional the grain and oil engineering Co., Ltd to produce, and model is DT4000; Heat exchanger 4 is provided by Wuxi all-in-one Energy Science Co., Ltd, and model is QB-RG-705; The manufacturer of steam heater 7 is Wuxi Pu Enjie thermal hardware Co., Ltd, and its model is DH-8/140; Automatic cleaning strainer 16 is produced by Wuxi all-in-one Energy Science Co., Ltd, and its model is QB-SCF-20/35-50.
The model of the critical piece in the present invention and specification and technical parameter, all by the national correlation technique requirement mounting equipment to similar unit, configure corresponding pipeline, after completing, system assembles does corresponding debugging and test, guaranteeing after qualified to be transported to required place, during operation, only need heat exchanger and filter to be connected and can to come into operation with original system on request.
The unit adopting in the present invention is all tested by professional test platform, and the operation of Bing factory has obtained substantial achievement, stable in production process, and efficient energy-saving is obtained better economic benefit, for grain and oil processing industry provides new equipment.
Claims (7)
1. the residual neat recovering system in a grain and oil expressing process, it is characterized in that: comprise heat exchanger (4), in described heat exchanger (4) front portion, fresh inlet (3) is set, new wind outlet (5) is set at the rear portion of heat exchanger (4), fresh inlet (3) is connected with the air outlet of new wind blower fan (1) by pipeline, new wind outlet (5) is connected with the import of steam heater (7) by pipeline, the outlet of described steam heater (7) is connected with dregs of beans evapo-separated machine (9) air inlet, the outlet of dregs of beans evapo-separated machine (9) is connected with circulation airduct (26), described circulation airduct (26) is upper is provided with cyclone separator (11) successively along air-out direction, the 5th thermometer (12), circulation airduct (26) end is connected with and is filtered airduct (25) by threeway, exhaust airduct (23), described filtration airduct (25) is connected with the hot blast import (19) of heat exchanger (4), and along air intake direction, be connected with filter air-valve (14) at filtration airduct (25) in turn, automatic cleaning strainer (16), the 6th thermometer (18), the hot blast air outlet (20) of heat exchanger (4) is connected with exhaust airduct (23) by circulating line, described exhaust airduct (23) is provided with exhaust air-valve (13).
2. the residual neat recovering system in grain and oil expressing process as claimed in claim 1, it is characterized in that: described heat exchanger (4) comprises heat exchanger body (24), described heat exchanger body (24) one end is connected with access door (27), and manhole (28) is set on described access door (27), the centre of gyration of described access door (27) forms fresh inlet (3); In described heat exchanger body (24) other end, be formed centrally hot blast import (19), corresponding to the end face of described hot blast import (19), be provided with new wind outlet (5); Described heat exchanger body (24) end face is provided with hot-blast outlet (20), in heat exchanger body (24) bottom, is provided with some drainpipes (22).
3. the residual neat recovering system in grain and oil expressing process as claimed in claim 1, it is characterized in that: described automatic cleaning strainer (16) top is provided with inspection socket (31), in automatic cleaning strainer (16) one sides, be provided with sight glass with scraping device (32), in the upper side relative to sight glass with scraping device (32) of automatic cleaning strainer (16), be provided with two spray headers (29), on the water pipe between two spray headers (29), be provided with screen pack (34), on described automatic cleaning strainer (16), be also provided with two water delivery nozzles (33).
4. the residual neat recovering system in grain and oil expressing process as claimed in claim 1, is characterized in that: described automatic cleaning strainer (16) is connected on filter airduct (25) by filter air inlet (15), filter air outlet (17).
5. the residual neat recovering system in grain and oil expressing process as claimed in claim 1, is characterized in that: described heat exchanger (4) bottom is provided with drainpipe (22).
6. the residual neat recovering system in grain and oil expressing process as claimed in claim 1, is characterized in that: between described new wind blower fan (1) and heat exchanger (4), on pipeline, be connected with the first thermometer (2).
7. the residual neat recovering system in grain and oil expressing process as claimed in claim 1, is characterized in that: between described heat exchanger (4) and steam heater (7), pipeline is provided with the second thermometer (6); Between described steam heater (7) and dregs of beans evapo-separated machine (9), be provided with the 3rd thermometer (8); On the outlet conduit of described dregs of beans evapo-separated machine (9), be connected with the 4th thermometer (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410268534.2A CN104048495B (en) | 2014-06-16 | 2014-06-16 | Residual neat recovering system in grain and oil expressing process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410268534.2A CN104048495B (en) | 2014-06-16 | 2014-06-16 | Residual neat recovering system in grain and oil expressing process |
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| CN104048495A true CN104048495A (en) | 2014-09-17 |
| CN104048495B CN104048495B (en) | 2016-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542304A (en) * | 2019-09-27 | 2019-12-06 | 中国环境科学研究院 | zero emission of desolventizer-toaster waste gas, pollutant and solvent recovery system |
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| WO2010117288A1 (en) * | 2009-04-06 | 2010-10-14 | Instituto Superior Tecnico | Integrated process of filtration to dry brewer's spent grain |
| CN202599067U (en) * | 2012-03-26 | 2012-12-12 | 孟州市金玉米有限责任公司 | Drying tower waste heat recycling device |
| CN203586733U (en) * | 2013-11-28 | 2014-05-07 | 江苏迈安德食品机械有限公司 | Waste heat recovering and deodorizing system for hot air layer of desolventizer-toaster-dryer-cooler (DTDC) |
| CN203964600U (en) * | 2014-06-16 | 2014-11-26 | 无锡全邦能源科技有限公司 | Residual neat recovering system in grain and oil expressing process |
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2014
- 2014-06-16 CN CN201410268534.2A patent/CN104048495B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010117288A1 (en) * | 2009-04-06 | 2010-10-14 | Instituto Superior Tecnico | Integrated process of filtration to dry brewer's spent grain |
| CN201407818Y (en) * | 2009-05-25 | 2010-02-17 | 北京运成兴华节能技术开发有限公司 | Recovery device of flue gas waste heat from energy-saving high-efficient boiler |
| CN202599067U (en) * | 2012-03-26 | 2012-12-12 | 孟州市金玉米有限责任公司 | Drying tower waste heat recycling device |
| CN203586733U (en) * | 2013-11-28 | 2014-05-07 | 江苏迈安德食品机械有限公司 | Waste heat recovering and deodorizing system for hot air layer of desolventizer-toaster-dryer-cooler (DTDC) |
| CN203964600U (en) * | 2014-06-16 | 2014-11-26 | 无锡全邦能源科技有限公司 | Residual neat recovering system in grain and oil expressing process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542304A (en) * | 2019-09-27 | 2019-12-06 | 中国环境科学研究院 | zero emission of desolventizer-toaster waste gas, pollutant and solvent recovery system |
| CN110542304B (en) * | 2019-09-27 | 2024-03-01 | 中国环境科学研究院 | Zero emission and solvent recovery system for waste gas and pollutant of steam stripping machine |
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| CN104048495B (en) | 2016-08-17 |
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