CN202860150U - System for recycling afterheat of steam condensed water of vacuum flash tank - Google Patents
System for recycling afterheat of steam condensed water of vacuum flash tank Download PDFInfo
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- CN202860150U CN202860150U CN 201220528542 CN201220528542U CN202860150U CN 202860150 U CN202860150 U CN 202860150U CN 201220528542 CN201220528542 CN 201220528542 CN 201220528542 U CN201220528542 U CN 201220528542U CN 202860150 U CN202860150 U CN 202860150U
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Abstract
The utility model discloses a system for recycling afterheat of steam condensed water of a vacuum flash tank. The system comprises a dehydration tower reboiler, an esterification material inlet preheater, the vacuum flash tank with an inlet end and two outlet ends, and a vacuum steam spraying pump with two gas suction ports and a gas exhaust port, wherein the vacuum flash tank is communicated with an upstream steam condensed water source; the outlet ends of the vacuum flash tank are connected with an inlet end of the esterification material inlet preheater; a steam outlet of the vacuum flash tank is connected with the gas suction ports of the vacuum steam spraying pump; and the gas exhaust port of the vacuum steam spraying pump is connected with a steam condensed water inlet end of the dehydration tower reboiler. The recycling system has the characteristics of being simple in structure, low in improvement cost and simple in execution and is used for recycling the afterheat of the steam condensed water; the production cost is reduced; and energy is saved. The recycling system is suitable for the production of ethyl acetate by using an esterification method.
Description
Technical field
The utility model belongs to chemical technology field, and a kind of vacuum flasher steam condensed water waste heat recovery system is applied to esterification process and produces in the technique of ethyl acetate specifically.
Background technology
Live (open) steam refers to that the steam that produces after water is heated, flash-off steam refer to traditionally from condensate water pot discharging or the steam of directly discharging to the Automatic steam trap Trap floss hole of airborne release in boiler.Steam condensate (SC) is discharged from the relatively high gas utilization unit of pressure by drain valve, because the drain valve outlet pressure is lower, part condensed water will flash to flash-off steam, the ratio of flash-off steam is by heat decision contained in steam and the condensed water, and the quality of general flash-off steam accounts for 10%～15% of high pressure condensed water.The heat of flash-off steam can account at most half of whole condensed water institute heat content, if condensed water and flash-off steam are directly discharged, then means the more make-up water of needs, fuel and operating cost, also is the significant wastage of the energy simultaneously.
Flash-off steam betides the water (saturation temperature when water temperature is higher than low pressure) of high pressure when becoming low pressure.If the temperature of water under high pressure is lower than the saturation temperature of low-pressure water, then just can not produce flash-off steam.When condensed water from the Automatic steam trap Trap process time, upstream temperature is enough high usually, will produce flash-off steam.According to the first law of thermodynamics, originally be present among the mixture of water and steam that energy in the condensed water of high-pressure side just is present in low-pressure side now, realize that this purpose need to be by certain technological means.
Chinese invention patent CN 101070284 discloses a kind of " method for sharing of cooler in the production of ethyl ", adopt existing many esterifying kettle parallel connections, many cooler parallel connections, change many esterifying kettles into and share a cooler, the gaseous phase materials of many esterifying kettle generations is respectively after the cooler cooling, all through a cooler cooling.Not only can effectively reduce the consumption of a water, the investment of cooling device is reduced, have the minimizing workload, characteristics simple to operate.But many public coolers of esterifying kettle tend to cause not reaching desired cooling effect, will strengthen the consumption of condensed water this moment, can reach identical condensation effect, although the equipment consumption of more existing many condenser parallel connections reduces, condensation effect reduces.
Summary of the invention
The technical problems to be solved in the utility model, provide a kind of vacuum flasher steam condensed water waste heat recovery system, being used for steam condensed water waste heat reclaims, this recovery system has simple in structure, and improvement expenses is low, characteristics easy to implement, utilize it by vacuum flasher steam condensate (SC) to be divided into steam and liquid two parts take full advantage of, reduce production costs, realized that condensate water thermal value rationally utilizes, and avoids energy waste.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of vacuum flasher steam condensed water waste heat recovery system, it comprises dehydration column reboiler, esterification feed preheater and has the vacuum flasher of an arrival end, two ports of export, also comprise the vacuum and steam jet pump with two air entries, an exhaust outlet, wherein:
The entrance of vacuum flasher and steam condensate (SC) water source, upstream (such as the steam condensate (SC) from esterifying kettle heating jacket and esterification reboiler steam condensation-water drain end) are connected;
The liquid outlet end of vacuum flasher is connected in arrival end to the esterification feed preheater of esterification feed preheating by pipeline; The steam (vapor) outlet end of vacuum flasher is connected in vacuum and steam jet pump air entry by pipeline, and vacuum and steam jet pump exhaust outlet links to each other by pipeline with the steam condensate (SC) arrival end of dehydration column reboiler.
As a kind of restriction of the present utility model, be equipped with valve on the described pipeline.
As another kind of restriction the of the present utility model, the arrival end of described vacuum and steam jet pump is provided with pressure gauge, and the liquid outlet end of vacuum flasher is provided with thermometer.
Owing to having adopted above-mentioned technical scheme, the utility model compared with prior art, obtained technological progress is:
Recovery system provided by the utility model by vacuum flasher steam condensate (SC) is divided into steam and liquid two parts take full advantage of, steam is used for the heating of dehydration column reboiler, liquid is used for the preheating of esterification feed preheater, wherein the direct use amount of live (open) steam has been saved in the generation of steam, reduces production costs; Changed existing esterifying kettle chuck and esterification reboiler high-temperature cooling water and dehydration column reboiler, treating column reboiler cryogenic condensation water directly discharges, condensate water thermal value can not rationally utilize the phenomenon that causes energy waste; This recovery system has simple in structure, and improvement expenses is low, characteristics easy to implement.
The utility model is applicable to esterification process and produces in the system of ethyl acetate.
The utility model is described in further detail below in conjunction with Figure of description and specific embodiment.
Description of drawings
Fig. 1 is the vacuum flasher steam condensed water waste heat recovery system schematic diagram of the utility model embodiment 1.
Among the figure: 1-esterifying kettle chuck, 2-esterification reboiler, 3-dehydration column reboiler, 4-esterification feed preheater, 5-vacuum flasher, 6-vacuum and steam jet pump, 61,62-vacuum and steam jet pump air entry, 63-vacuum and steam jet pump exhaust outlet, 7-dehydrating tower, 8-live (open) steam generator.
The specific embodiment
A kind of vacuum flasher steam condensed water waste heat recovery system as shown in Figure 1, comprises that esterifying kettle adds cover 1, esterification reboiler 2, dehydration column reboiler 3, esterification feed preheater 4, vacuum flasher 5, vacuum and steam jet pump 6.Esterifying kettle add the cover 1 with esterification reboiler 2 all with the steam condensate (SC) port of export.Vacuum flasher 5 has an arrival end, two ports of export.Vacuum and steam jet pump 6 has two air entries and an exhaust outlet.
Esterifying kettle chuck 1 and esterification reboiler 2 are in parallel, and the port of export of their steam condensate (SC) links to each other by the arrival end of pipeline with vacuum flasher 5.Vacuum flasher 5 is provided with two ports of export, and an end is the liquid outlet end, is connected in entrance to the esterification feed preheater 4 of esterification feed preheating by pipeline; The other end is the steam (vapor) outlet end, is connected in the air entry 61 of vacuum and steam jet pump 6 by pipeline.The exhaust outlet 63 of vacuum and steam jet pump 6 links to each other by pipeline with the steam condensate (SC) arrival end of dehydration column reboiler 3.In the aforementioned connecting relation, be equipped with valve on the pipeline between per two devices.Two arrival ends 61 and 62 of vacuum and steam jet pump are equipped with pressure gauge, and the liquid outlet end of vacuum flasher 5 is provided with thermometer.
The thermal source of dehydration column reboiler 3 is live (open) steam, the heating that the live (open) steam that is produced by corresponding live (open) steam generator 8 can directly enter dehydration column reboiler 3, also can enter vacuum and steam jet pump 6 by vacuum and steam jet pump air entry 62 and enter dehydration column reboiler 3, dehydration column reboiler 3 is used for the heating of dehydrating tower 7, and the heating of dehydration column reboiler 3 of the prior art generally all uses live (open) steam 8 to heat.
The present embodiment is applied in the vacuum flasher steam condensed water waste heat and reclaims in the technique, shown in the direction of arrow among Fig. 1, this technique be by vacuum flasher 5 with the steam condensate (SC) partial gasification in esterifying kettle chuck 1 and the esterifying kettle reboiler 2, produce steam and liquid two parts; The steam that produces enters vacuum and steam jet pump 6 by vacuum and steam jet pump air entry 61, also can be used for the heating of dehydration column reboiler 3; The condensed water that the liquid that produces and dehydration column reboiler 3 produce compiles, and enters esterification feed preheater 4, and it is carried out preheating.
Above-mentioned technique is divided into steam and the utilization of liquid two parts by vacuum flasher 5 with steam condensate (SC), change existing esterifying kettle chuck and esterification reboiler high-temperature cooling water and dehydration column reboiler, treating column reboiler cryogenic condensation water directly discharges, it is the phenomenon of energy waste that condensate water thermal value can not rationally utilize.
The above-mentioned technique that the residual neat recovering system that adopts the present embodiment to provide is realized, be applied to produce per year 50,000 tons Ethyl Acetate Plant, with 120 ℃ of condensed water 13t/h of discharge temperature per hour, vacuum flashing to 86 ℃ meter, per hour steam consumption reduces 938kg/h, every day steam saving 22.5t, (calculating by 300 days) steam saving was 6750 tons in 1 year, saved live steam 15%.
Claims (3)
1. vacuum flasher steam condensed water waste heat recovery system,
It is characterized in that: it comprises dehydration column reboiler (3), esterification feed preheater (4) and has the vacuum flasher (5) of an arrival end, two ports of export, also comprises the vacuum and steam jet pump (6) with two air entries, an exhaust outlet, wherein:
The entrance of vacuum flasher (5) and steam condensate (SC) water source, upstream are connected;
The liquid outlet end of vacuum flasher (5) is connected in arrival end to the esterification feed preheater (4) of esterification feed preheating by pipeline; The steam (vapor) outlet end of vacuum flasher (5) is connected in vacuum and steam jet pump air entry (61) by pipeline, and vacuum and steam jet pump exhaust outlet (63) links to each other by pipeline with the steam condensate (SC) arrival end of dehydration column reboiler (3).
2. vacuum flasher steam condensed water waste heat recovery system according to claim 1,
It is characterized in that:Be equipped with valve on the described pipeline.
3. vacuum flasher steam condensed water waste heat recovery system according to claim 1 and 2,
It is characterized in that:The arrival end of described vacuum and steam jet pump (6) is provided with pressure gauge, and the liquid outlet end of vacuum flasher (5) is provided with thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220528542 CN202860150U (en) | 2012-10-16 | 2012-10-16 | System for recycling afterheat of steam condensed water of vacuum flash tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220528542 CN202860150U (en) | 2012-10-16 | 2012-10-16 | System for recycling afterheat of steam condensed water of vacuum flash tank |
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| CN202860150U true CN202860150U (en) | 2013-04-10 |
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| CN 201220528542 Expired - Fee Related CN202860150U (en) | 2012-10-16 | 2012-10-16 | System for recycling afterheat of steam condensed water of vacuum flash tank |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301641A (en) * | 2013-07-08 | 2013-09-18 | 石家庄吉瑞节能技术有限公司 | Reduced pressure and evaporation concentrator capable of circularly utilizing heat energy |
| CN104061560A (en) * | 2014-07-02 | 2014-09-24 | 南通星辰合成材料有限公司 | Method for utilizing the waste heat of steam condensed water of biphenol A device |
| CN104998431A (en) * | 2015-08-05 | 2015-10-28 | 太仓中化环保化工有限公司 | Comprehensive utilization device and method for steam condensate in fluorocarbon alkane production device |
| CN105953598A (en) * | 2015-12-24 | 2016-09-21 | 天津市布加迪环保科技发展有限公司 | Condensed water vaporization heat exchange system |
| CN106310682A (en) * | 2015-06-23 | 2017-01-11 | 施丽菊 | High-temperature organic liquid energy-saving purification system |
| CN111013514A (en) * | 2019-12-18 | 2020-04-17 | 安徽昊源化工集团有限公司 | Energy-saving and consumption-reducing system for recycling heat of styrene product produced by ethylbenzene dehydrogenation |
| CN111270324A (en) * | 2020-03-13 | 2020-06-12 | 中复神鹰碳纤维有限责任公司 | Method for recycling secondary flash steam of spinning line drying condensate water |
-
2012
- 2012-10-16 CN CN 201220528542 patent/CN202860150U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301641A (en) * | 2013-07-08 | 2013-09-18 | 石家庄吉瑞节能技术有限公司 | Reduced pressure and evaporation concentrator capable of circularly utilizing heat energy |
| CN103301641B (en) * | 2013-07-08 | 2015-07-01 | 石家庄吉瑞节能技术有限公司 | Reduced pressure and evaporation concentrator capable of circularly utilizing heat energy |
| CN104061560A (en) * | 2014-07-02 | 2014-09-24 | 南通星辰合成材料有限公司 | Method for utilizing the waste heat of steam condensed water of biphenol A device |
| CN106310682A (en) * | 2015-06-23 | 2017-01-11 | 施丽菊 | High-temperature organic liquid energy-saving purification system |
| CN104998431A (en) * | 2015-08-05 | 2015-10-28 | 太仓中化环保化工有限公司 | Comprehensive utilization device and method for steam condensate in fluorocarbon alkane production device |
| CN105953598A (en) * | 2015-12-24 | 2016-09-21 | 天津市布加迪环保科技发展有限公司 | Condensed water vaporization heat exchange system |
| CN105953598B (en) * | 2015-12-24 | 2018-03-06 | 天津市布加迪环保科技发展有限公司 | Condensing water vapor heat-exchange system |
| CN111013514A (en) * | 2019-12-18 | 2020-04-17 | 安徽昊源化工集团有限公司 | Energy-saving and consumption-reducing system for recycling heat of styrene product produced by ethylbenzene dehydrogenation |
| CN111013514B (en) * | 2019-12-18 | 2024-05-14 | 安徽昊源化工集团有限公司 | Energy-saving and consumption-reducing system for heat recovery of styrene product produced by ethylbenzene dehydrogenation |
| CN111270324A (en) * | 2020-03-13 | 2020-06-12 | 中复神鹰碳纤维有限责任公司 | Method for recycling secondary flash steam of spinning line drying condensate water |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20141016 |
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| EXPY | Termination of patent right or utility model |