CN103053991A - Energy-saving cooling method and energy-saving cooling device of compressed air for aerobic microbial fermentation system - Google Patents

Energy-saving cooling method and energy-saving cooling device of compressed air for aerobic microbial fermentation system Download PDF

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Publication number
CN103053991A
CN103053991A CN2013100000505A CN201310000050A CN103053991A CN 103053991 A CN103053991 A CN 103053991A CN 2013100000505 A CN2013100000505 A CN 2013100000505A CN 201310000050 A CN201310000050 A CN 201310000050A CN 103053991 A CN103053991 A CN 103053991A
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China
Prior art keywords
air
compressed air
hot
temperature
heating device
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CN2013100000505A
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Chinese (zh)
Inventor
杨玉岭
满德恩
李高卫
李国良
郭脉海
程美科
殷慧
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LINGHUA GROUP CO Ltd
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LINGHUA GROUP CO Ltd
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Priority to CN2013100000505A priority Critical patent/CN103053991A/en
Publication of CN103053991A publication Critical patent/CN103053991A/en
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Abstract

The invention provides an energy-saving cooling method and an energy-saving cooling device of compressed air for an aerobic microbial fermentation system, and belongs to the technical field of water saving and energy saving. The device comprises an air heat regenerator, a circulating water heat exchanger, a chilled water heat exchanger and a dehydrator. The method comprises the following processes: high temperature air of a compressor-the air heat regenerator-the circulating water heat exchanger-the chilled water heat exchanger-the dehydrator-the air heat regenerator-compressed air at 33-60 DEG C. According to the invention, compared with the prior art, the method has the characteristics of production-water conservation, energy conservation and the like.

Description

Method and the device of aerobic microbiological fermentation system compressed air energy-saving cool-down
Technical field
The invention belongs to the field of saving water and energy, specifically relate to a kind of method and device (in the glutamate production) of aerobic microbiological fermentation system compressed air energy-saving cool-down.
Technical background
Need continue to pass into aseptic compressed air in the glutamate production in the aerobic microbiological sweat.But the prepared compressed air one of air compressor is that humidity is larger, is unfavorable for follow-up air cleaner degerming, the 2nd, and temperature is higher, can't directly be used in fermenting and producing, so will remove water for cooling to compressed air.
The problem that existing falling temperature technique exists, the one, owing to hot and humid compressed air will be reduced to the temperature standard that dehydrater requires, to impel the abundant condensation of moisture in the compressed air, guarantee water removal effect, need to consume a large amount of cooling waters.The 2nd, reach the preference temperature requirement of fermenting and producing in order to make final compressed air temperature, need to use steam that the rear low temperature compression air that dewaters is heated again, consume a large amount of steam.
Summary of the invention
Technical assignment of the present invention is for the deficiencies in the prior art, and a kind of method and device that can effectively reduce the temperature lowering water consumption, save the aerobic microbiological fermentation system compressed air energy-saving cool-down of steam consumption is provided.
Technical assignment of the present invention is to use following methods and device:
The method of aerobic microbiological fermentation system compressed air energy-saving cool-down in the glutamate production, step is as follows:
A: air compressor 1 prepared hot and humid compressed air at first enters air return heating device for hot 2 and carries out first step cooling;
B: the compressed air after the first step cooling enters Heat Exchanger in Circulating Water System 3 and chilled water heat exchanger 4 successively to carry out heat exchange and further reduces temperature;
C: the compressed air that reaches temperature requirement passes into dehydrater 5 and dewaters;
D: the compressed air after dewatering passes into air return heating device for hot 2 again carry out heat exchange and improve compressed air temperature after, be used for fermentation.
Foregoing method, preferred scheme is step a: it is 100~130 ℃ (preferred 120 ℃) that air compressor 1 prepared hot and humid compressed air enters air return heating device for hot 2 front control temperature.
Foregoing method, preferred scheme is step a: the temperature that hot and humid compressed air enters after air return heating device for hot 2 is lowered the temperature is 70~90 ℃ (preferred 80 ℃).
Foregoing method, preferred scheme is step b: compressed air reduces the temperature to 7~30 ℃ (preferred 15-25 ℃ is more preferably 20 ℃) through heat exchange.
Foregoing method, preferred scheme is steps d: the compressed air after dewatering again passes into air return heating device for hot 2 and carries out heat exchange raising compressed air temperature to 33~60 ℃ (preferred 40~50 ℃ are more preferably 45 ℃).
The present invention also provides the device of aerobic microbiological fermentation system compressed air energy-saving cool-down in the glutamate production, comprise air compressor 1, air return heating device for hot 2, Heat Exchanger in Circulating Water System 3, chilled water heat exchanger 4 and dehydrater 5, air compressor 1 gas outlet links to each other with air return heating device for hot 2 shell side air inlets, air return heating device for hot 2 shell side gas outlets link to each other with Heat Exchanger in Circulating Water System 3 shell side air inlets, chilled water heat exchanger 4 shell side gas outlets link to each other with dehydrater 5 air inlets, and dehydrater 5 gas outlets link to each other with air return heating device for hot 1 tube side air inlet.
Method and the device of aerobic microbiological fermentation system compressed air energy-saving cool-down of the present invention, the characteristics of implementation step are (as shown in Figure 1): a: air compressor 1 prepared hot and humid compressed air (100~130 ℃) at first enters air return heating device for hot 2 and carries out first step cooling, and the temperature after the cooling is 70~90 ℃.B: the compressed air after the first step cooling enters Heat Exchanger in Circulating Water System 3 successively, chilled water heat exchanger 4 carries out heat exchange and reduces the temperature to 7~30 ℃, makes the condensate moisture in the compressed air, to guarantee follow-up water removal effect.Because the preliminary cooling that compressed air has carried out in a step has improved the deficiency that hot and humid compressed air is directly lowered the temperature in the present technology, has greatly reduced the consumption of temperature lowering water in Heat Exchanger in Circulating Water System 3, the chilled water heat exchanger 4.The consumption of temperature lowering water reduces 40~60%.C: the compressed air that reaches temperature requirement passes into dehydrater 5 and dewaters.D: the compressed air after dewatering passes into air return heating device for hot 2 again to carry out heat exchange and improves compressed air temperature to 33~60 ℃, then discharges compressed air cooling water scavenging system and is used for fermenting and producing.The characteristics of this step are exactly to utilize the temperature difference of high temperature compressed air and the rear low temperature compression air that dewaters when initial, both carry out heat exchange, both initial high temperature air had been carried out preliminary cooling, improved again the rear compressed-air actuated temperature that dewaters, and made it reach the requirement of fermenting and producing.Improve the deficiency that to utilize Steam Heating to heat up to the low temperature compression air after dewatering in the present technology, saved steam consumption.
The method is used " cycling hot exchange " technique, can effectively reduce the temperature lowering water consumption, saves steam.
Its technological process is: compressor high temperature air → air return heating device for hot → Heat Exchanger in Circulating Water System → chilled water heat exchanger → dehydrater → air return heating device for hot → 33~60 ℃ compressed air.Reduce compressed air temperature by this method and device, technological process is succinct, only needs to increase air return heating device for hot, and pipeline is just simply transformed and can be realized, investment is saved; Reduce the consumption of temperature lowering water, save steam consumption.
Description of drawings
Fig. 1 is the apparatus structure schematic diagram of aerobic microbiological fermentation system compressed air energy-saving cool-down method.
Wherein 1 is air compressor; 2 is air return heating device for hot; 3 is Heat Exchanger in Circulating Water System; 4 is the chilled water heat exchanger; 5 is dehydrater.
The specific embodiment
Describe technical scheme of the present invention in detail below in conjunction with embodiment and accompanying drawing, but protection domain is not by this restriction.
Embodiment 1:The device of aerobic microbiological fermentation system compressed air energy-saving cool-down as shown in Figure 1, comprises air compressor 1 in the glutamate production, air return heating device for hot 2, Heat Exchanger in Circulating Water System 3, chilled water heat exchanger 4, dehydrater 5.Air compressor 1 gas outlet links to each other with air return heating device for hot 2 shell side air inlets.Air return heating device for hot 2 shell side gas outlets link to each other with Heat Exchanger in Circulating Water System 3 shell side air inlets, and recirculated water passes in the Heat Exchanger in Circulating Water System 3 water resistance pipes, and chilled water passes in the chilled water heat exchanger 4 water resistance pipes, and chilled water heat exchanger 4 shell side gas outlets link to each other with dehydrater 5 air inlets.Dehydrater 5 gas outlets link to each other with air return heating device for hot 1 tube side air inlet, discharge by the tube side gas outlet at last.
Embodiment 2:The method of aerobic microbiological fermentation system compressed air energy-saving cool-down in the glutamate production.
10000 m 3/ h, 100~130 ℃, 0.3Mpa compressed air, enter air return heating device for hot 2 heat exchanges after, temperature is reduced to 80-90 ℃.The compressed air of preliminary cooling passes into Heat Exchanger in Circulating Water System 3 and chilled water heat exchanger 4.Recirculated water 1m/s, 20~30 ℃; Chilled water 1m/s, 5-15 ℃.10~20 ℃ of chilled water heat exchanger 4 gas outlet compressed air temperature.After the low temperature compression air of this moment passes into dehydrater 5 and dewaters, again enter air return heating device for hot 1 and improve temperature to 45~55 ℃.Compare with present technology, per hour can save 10~15 tons of temperature lowering waters, save 15~25 tons of saturated vapors.
Embodiment 3:The method of aerobic microbiological fermentation system compressed air energy-saving cool-down in the glutamate production.
20000 m 3/ h, 100~130 ℃, 0.25Mpa compressed air, enter air return heating device for hot 2 heat exchanges after, temperature is reduced to 80~90 ℃.The compressed air of preliminary cooling passes into Heat Exchanger in Circulating Water System 3 and chilled water heat exchanger 4.Recirculated water 1.5m/s, 20~30 ℃; Chilled water 1.5m/s, 5~15 ℃.10~20 ℃ of chilled water heat exchanger 4 gas outlet compressed air temperature.After the low temperature compression air of this moment passes into dehydrater 5 and dewaters, again enter air return heating device for hot 1 and improve temperature to 45~55 ℃.Compare with present technology, per hour can save 17~23 tons of temperature lowering waters, save 30~45 tons of saturated vapors.
Embodiment 4:The method of aerobic microbiological fermentation system compressed air energy-saving cool-down in the glutamate production.Step is as follows:
A: air compressor 1 prepared hot and humid compressed air (120 ℃) at first enters air return heating device for hot 2 and carries out first step cooling, and the temperature after the cooling is 80 ℃.B: the compressed air after the first step cooling enters Heat Exchanger in Circulating Water System 3 successively, chilled water heat exchanger 4 carries out heat exchange and reduces the temperature to 20 ℃, makes the condensate moisture in the compressed air, to guarantee follow-up water removal effect.Because the preliminary cooling that compressed air has carried out in a step has improved the deficiency that hot and humid compressed air is directly lowered the temperature in the present technology, has greatly reduced the consumption of temperature lowering water in Heat Exchanger in Circulating Water System 3, the chilled water heat exchanger 4.The consumption of temperature lowering water reduces 58%.C: the compressed air that reaches temperature requirement passes into dehydrater 5 and dewaters.D: the compressed air after dewatering passes into air return heating device for hot 2 again to carry out heat exchange and improves compressed air temperature to 45 ℃, then discharges compressed air cooling water scavenging system and is used for fermenting and producing.Compare with present technology, per hour can save 15~21 tons of temperature lowering waters, save 31~43 tons of saturated vapors.

Claims (6)

1. the method for aerobic microbiological fermentation system compressed air energy-saving cool-down in the glutamate production is characterized in that step is as follows:
A: the prepared hot and humid compressed air of air compressor (1) at first enters air return heating device for hot (2) and carries out first step cooling;
B: the compressed air after the first step cooling enters Heat Exchanger in Circulating Water System (3) and chilled water heat exchanger (4) successively to carry out heat exchange and further reduces temperature;
C: the compressed air that reaches temperature requirement passes into dehydrater (5) and dewaters;
D: the compressed air after dewatering passes into air return heating device for hot (2) again carry out heat exchange and improve compressed air temperature after, be used for fermentation.
2. method according to claim 1 is characterized in that, step a: it is 100~130 ℃ (preferred 120 ℃) that the prepared hot and humid compressed air of air compressor (1) enters the front control temperature of air return heating device for hot (2).
3. method according to claim 1 is characterized in that, step a: the temperature that hot and humid compressed air enters after air return heating device for hot (2) is lowered the temperature is 70~90 ℃ (preferred 80 ℃).
4. method according to claim 1 is characterized in that, step b: compressed air reduces the temperature to 7~30 ℃ (preferred 15-25 ℃ is more preferably 20 ℃) through heat exchange.
5. method according to claim 1 is characterized in that, steps d: the compressed air after dewatering again passes into air return heating device for hot (2) and carries out heat exchange raising compressed air temperature to 33~60 ℃ (preferred 40~50 ℃ are more preferably 45 ℃).
6. the device of aerobic microbiological fermentation system compressed air energy-saving cool-down in the glutamate production, it is characterized in that, comprise air compressor (1), air return heating device for hot (2), Heat Exchanger in Circulating Water System (3), chilled water heat exchanger (4) and dehydrater (5), air compressor (1) gas outlet links to each other with air return heating device for hot (2) shell side air inlet, air return heating device for hot (2) shell side gas outlet links to each other with Heat Exchanger in Circulating Water System (3) shell side air inlet, chilled water heat exchanger (4) shell side gas outlet links to each other with dehydrater (5) air inlet, and dehydrater (5) gas outlet links to each other with air return heating device for hot (1) tube side air inlet.
CN2013100000505A 2013-01-04 2013-01-04 Energy-saving cooling method and energy-saving cooling device of compressed air for aerobic microbial fermentation system Pending CN103053991A (en)

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Cited By (2)

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CN103954031A (en) * 2014-05-04 2014-07-30 梁山菱花生物科技有限公司 Method and device for recycling heat energy of compressed air of aerobe fermentation system
CN108444312A (en) * 2018-03-23 2018-08-24 轻工业环境保护研究所 A kind of dry air closed circulation device

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Publication number Priority date Publication date Assignee Title
CN103954031A (en) * 2014-05-04 2014-07-30 梁山菱花生物科技有限公司 Method and device for recycling heat energy of compressed air of aerobe fermentation system
CN108444312A (en) * 2018-03-23 2018-08-24 轻工业环境保护研究所 A kind of dry air closed circulation device

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Application publication date: 20130424