CN204301024U - A kind of rectifying column air cooling device heat-recovering generating plant - Google Patents

A kind of rectifying column air cooling device heat-recovering generating plant Download PDF

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Publication number
CN204301024U
CN204301024U CN201420716529.9U CN201420716529U CN204301024U CN 204301024 U CN204301024 U CN 204301024U CN 201420716529 U CN201420716529 U CN 201420716529U CN 204301024 U CN204301024 U CN 204301024U
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China
Prior art keywords
air cooling
cooling device
pipeline
heat exchanger
rectifying column
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CN201420716529.9U
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Chinese (zh)
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张东石
宁兆林
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Dalian Fujia Dahua Petrochemical Co Ltd
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Dalian Fujia Dahua Petrochemical Co Ltd
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Abstract

A kind of rectifying column air cooling device heat-recovering generating plant, belongs to cogeneration field.Tower top oil gas after rectifying column rectifying enters heat exchanger and carries out heat exchange, returns return tank after cooling; Delivery in heat exchanger after heat exchange to drum, then flashes to steam through flash vessel, and steam to generator set acting generating by Cemented filling, after steam cooling, then is turned back to hot water circulating pump by pipeline, enters heat exchanger and circulate.Take the Low Temperature Thermal of tower top affluence, tower top oil gas enters heat exchanger, with hot water heat exchange, returns return tank after cooling, realizes material air cooling device and stops transport.By by the steam driven generator set acting generating of heating, finally achieve the utilization of Low Temperature Thermal.

Description

A kind of rectifying column air cooling device heat-recovering generating plant
Technical field
The utility model relates to a kind of rectifying column air cooling device heat-recovering generating plant, belongs to cogeneration field.
Background technique
Aromatic Hydrocarbon United Plant is a high energy consuming devices, while using fuel gas, steam to provide thermal source for rectifying column in a large number, rectifying column tower top again by air cooling device by the thermal release of system in air, tower top Low Temperature Thermal resource is not reasonably and effectively used, causes Aromatic Hydrocarbon United Plant energy consumption to remain high.Due to the improving constantly of ripe and equipment manufacture industry level day by day of Low Temperature Steam generation technology in recent years, recycle for Aromatic Hydrocarbon United Plant rectifying column tower top Low Temperature Thermal and create basis.By the transformation to rectifying tower head space cooler, utilize low pressure steam to drive turbogenerator generating, can fully reclaim tower top waste heat, also can save the electric energy that former air cooling device consumes.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the utility model provides one to be applicable to a kind of rectifying column air cooling device heat-recovering generating plant.
For achieving the above object, the technological scheme that the utility model adopts is a kind of rectifying column air cooling device heat-recovering generating plant, comprise rectifying column, material air cooling device and return tank, rectifying column connects material air cooling device by the first pipeline, and material air cooling device connects return tank by second pipe; Also comprise heat exchanger, drum, flash vessel, generator set and hot water circulating pump; Rectifying column connects heat exchanger by the 3rd pipeline, and heat exchanger connects return tank by the 4th pipeline; Heat exchanger also connects drum by pipeline, and drum connects flash vessel by pipeline, and flash vessel connects generator set by the 5th pipeline, and generator set connects hot water circulating pump by the 6th pipeline, and hot water circulating pump is connected with heat exchanger by pipeline; Tower top oil gas after rectifying column rectifying enters heat exchanger and carries out heat exchange, returns return tank after cooling; Delivery in heat exchanger after heat exchange to drum, then flashes to steam through flash vessel, and steam to generator set acting generating by the 5th Cemented filling, after steam cooling, then is turned back to hot water circulating pump by the 6th pipeline, enters heat exchanger and circulate.Second pipe is arranged air cooling device switching valve, it is arranged air cooling device temperature transducer, the 4th pipeline arranges heat exchanger switching valve, it is arranged heat exchange temperature sensor; Air cooling device temperature transducer, heat exchange temperature sensor are connected to temperature controller, and the overhead oil temperature degree recorded is transferred to temperature controller; Temperature controller controls the opening and closing of air cooling device switching valve, heat exchanger switching valve.First pipeline arranges air cooling device cut-off valve, second pipe arranges heat exchanger cut-off valve.5th pipeline is incorporated to steam pipe system; 6th pipeline is provided with air cooling device.Rectifier column reflux tank is provided with water bag.Generator set comprises steam turbine set and turbine power generation unit; Flash vessel connects steam turbine set by the 5th pipeline, and steam turbine set connects turbine power generation unit.Steam turbine set arranges catch box, and catch box is connected to hot well by catch box pump, and hot well is connected to oxygen-eliminating device by hot well pump, and oxygen-eliminating device is connected with hot water circulating pump by pipeline.Steam air cooling device one end is connected with catch box, and the other end is connected with hot well; Steam becomes vehicle repair major after being done work by steam turbine set, and the liquid phase flowing into catch box enters catch box pump by pipeline, then enters hot well by pipeline; Hot well is entered by pipeline after entering the vapour phase cooling of steam air cooling device.
The utility model is by arranging heat exchanger in air cooling platform position, and newly-increased hot water recuperated cycle flow process, take the Low Temperature Thermal of tower top affluence, tower top oil gas enters heat exchanger, with hot water heat exchange, returns return tank after cooling, realizes material air cooling device and stops transport.By by the steam driven generator set acting generating of heating, finally achieve the utilization of Low Temperature Thermal.
When overhead oil temperature is spent height or measured excessive, when causing tower top oil gas temperature after heat exchanger heat exchange still high, temperature controller controls air cooling device switching valve and opens, and makes a part of tower top oil gas enter material air cooling device; When heat exchange temperature sensor detects the overhead oil temperature degree reduction through heat exchanger, temperature controller controls air cooling device switching valve and cuts out, and now tower top oil gas all enters heat exchanger.
After adopting such scheme, compared with prior art there is following beneficial effect: the switching valve being provided with temperature transducer on second pipe and the 4th pipeline respectively, temperature transducer is connected to temperature controller, the overhead oil temperature signal recorded is transferred to temperature controller, temperature controller controls the opening and closing of switching valve, meeting under rectifying column temperature controls normal prerequisite, can ensure that thermal medium is as much as possible and passing through heat exchanger.First pipeline and the 3rd pipeline arrange cut-off valve respectively, cut-off valve is Non-follow control, once heat exchanger breaks down, cut-off valve in heat exchanger tube can cut out, tower top oil gas all enters material air cooling device, thus can carry out by holding means continous-stable, heat exchanger overhauls, the flexibility of assurance device.5th pipeline is incorporated to steam pipe system, and accompany winter heat comparatively large on the one hand, steam therefore more than needed can generate electricity for low pressure in the lump; On the other hand, when steam flow is not enough, by steam pipe system input steam to ensure that generator set normally works.The utility model is provided with vapor-liquid separating device, improves the working efficiency of generator.Return tank increases water bag, can leak and can dewater by Timeliness coverage.Select high-performance heat exchanger, to improve heat exchange efficiency to greatest extent.Heat exchanger is arranged in above air cooling platform, ensures that the potential difference of heat exchanger and return tank meets requirement of flowing automatically.
Accompanying drawing explanation
Fig. 1 is a kind of structural drawing of rectifying column air cooling device heat-recovering generating plant;
Fig. 2 is the structural drawing of a kind of rectifying column air cooling device heat-recovering generating plant with vapor-liquid separating device.
In figure: 1, rectifying column, 2, heat exchanger, 3, drum, 4, material air cooling device, 5, air cooling device, 6, return tank, 7, hot water circulating pump, 8, generator set, 8-1, steam turbine set, 8-2, turbine power generation unit, 9, air cooling device switch valve, 10, heat exchanger switch valve, 11, temperature controller, 12, first pipeline, 13, second pipe, 14, 3rd pipeline, 15, 4th pipeline, 16, 5th pipeline, 17, 6th pipeline, 18 air cooling device cut-off valves, 19, heat exchanger cut-off valve, 20, water bag, 21, catch box, 22, catch box pump, 23, hot well, 24, hot well pump, 25, oxygen-eliminating device, 26, flash vessel, 27, steam air cooling device.
Embodiment
A kind of rectifying column air cooling device heat-recovering generating plant, comprise rectifying column 1, material air cooling device 4 and return tank 6, rectifying column 1 connects material air cooling device 4 by the first pipeline 12, material air cooling device 4 connects return tank 6 by second pipe 13, also comprises heat exchanger 2, drum 3, flash vessel 26, generator set 8 and hot water circulating pump 7; Rectifying column 1 connects heat exchanger 2 by the 3rd pipeline 14, and heat exchanger 2 connects return tank 6 by the 4th pipeline 15; Heat exchanger 1 also connects drum 3 by pipeline, and drum 3 connects flash vessel 26, and flash vessel 26 connects generator set 8 by the 5th pipeline 16, and generator set 8 connects hot water circulating pump 7 by the 6th pipeline 17, and hot water circulating pump 7 is connected with heat exchanger 2 by pipeline; Tower top oil gas after rectifying column 1 rectifying enters heat exchanger 2 and carries out heat exchange, returns return tank 6 after cooling; Delivery in heat exchanger 2 after heat exchange is to drum 3, flash to steam through flash vessel 26 again, steam is delivered to generator set 8 acting generating, after steam cooling by the 5th pipeline 16, turn back to hot water circulating pump 7 by the 6th pipeline 17 again, enter heat exchanger 2 and circulate.Second pipe 13 is arranged air cooling device switching valve 9, it is arranged air cooling device temperature transducer, the 4th pipeline 15 arranges heat exchanger switching valve 10, it is arranged heat exchange temperature sensor; Air cooling device temperature transducer, heat exchange temperature sensor are connected to temperature controller 11, and the overhead oil temperature degree recorded is transferred to temperature controller 11; Temperature controller 11 controls the opening and closing of air cooling device switching valve 9, heat exchanger switching valve 10.First pipeline 12 arranges air cooling device cut-off valve 18, second pipe 13 arranges heat exchanger cut-off valve 19.5th pipeline 16 is incorporated to steam pipe system; 6th pipeline 17 is provided with air cooling device 5.Return tank 3 is provided with water bag 20.Described generator set 8 comprises steam turbine set 8-1, turbine power generation unit 8-2; Flash vessel 26 connects steam turbine set 8-1 by the 5th pipeline 16, and steam turbine set 8-1 connects turbine power generation unit 8-2.Steam turbine set 8-1 arranges catch box 21, and catch box 21 is connected to hot well 23 by catch box pump 22, and hot well 23 is connected to oxygen-eliminating device 25 by hot well pump 24, and oxygen-eliminating device 25 is connected with hot water circulating pump 7 by pipeline.; Steam air cooling device 27 one end is connected with catch box 21, and the other end is connected with hot well 23; Steam is by becoming vehicle repair major after steam turbine set 8-1 acting, and the liquid phase flowing into catch box 21 enters catch box pump 22 by pipeline, then enters hot well 23 by pipeline; Hot well 23 is entered by pipeline after entering the vapour phase cooling of steam air cooling device 27.
By arranging heat exchanger 2 in air cooling platform position, newly-increased hot water recuperated cycle flow process, take the Low Temperature Thermal of tower top affluence, tower top oil gas enters heat exchanger 2, with hot water heat exchange, returns return tank 6 after cooling, realizes material air cooling device 4 and stops transport.By generating of being done work by the steam driven generator set 8 heated, finally achieve the utilization of Low Temperature Thermal.
When overhead oil temperature is spent height or measured excessive, when causing tower top oil gas temperature after heat exchanger 2 heat exchange still high, temperature controller 11 controls opening of air cooling device switching valve 10, makes a part of tower top oil gas enter material air cooling device 4; When heat exchange temperature sensor detects the overhead oil temperature degree reduction through heat exchanger 2, temperature controller 11 controls the cut out of air cooling device switching valve 10, and now tower top oil gas all enters heat exchanger 2.Second pipe 13 and the 4th pipeline 15 are provided with the switching valve of temperature transducer respectively, temperature transducer is connected to temperature controller 11, the overhead oil temperature signal recorded is transferred to temperature controller 11, temperature controller 11 controls the opening and closing of switching valve, meeting under rectifying column 1 temperature controls normal prerequisite, can ensure that thermal medium is as much as possible by heat exchanger 2.First pipeline 12 and the 3rd pipeline 14 arrange cut-off valve respectively, cut-off valve is Non-follow control, once heat exchanger 2 breaks down, cut-off valve on heat exchanger 2 pipeline can cut out, tower top oil gas all enters material air cooling device 4, thus can carry out by holding means continous-stable, heat exchanger 1 overhauls, the flexibility of assurance device.5th pipeline 16 is incorporated to steam pipe system, and accompany winter heat comparatively large on the one hand, steam therefore more than needed can generate electricity for low pressure in the lump; On the other hand, when steam flow is not enough, by steam pipe system input steam to ensure that generator set 8 normally works.The utility model is also provided with vapor-liquid separating device, improves the working efficiency of generator set.Return tank 6 increases water bag 20, can leak and can dewater by Timeliness coverage.Select high-performance heat exchanger, to improve heat exchange efficiency to greatest extent.Heat exchanger 2 is arranged on air cooling platform, and heat exchanger 2 meets with the potential difference of return tank 6 requirement of flowing automatically.
This equipment is applicable to the rectifying column of thermal medium outlet temperature more than 130 DEG C, the hot water pumped out by hot water circuit is heated into 130 DEG C through heat exchanger from 45 DEG C, 0.27MPa, 130 DEG C of steam are flashed to after drum, the vehicle repair major that 60 DEG C saturated is cooled to after turbine set acting generating, after air cooling device, become 45 DEG C of hot water again, return pump and circulate.

Claims (6)

1. a rectifying column air cooling device heat-recovering generating plant, comprise rectifying column (1), material air cooling device (4) and return tank (6), rectifying column (1) connects material air cooling device (4) by the first pipeline (12), material air cooling device (4) connects return tank (6) by second pipe (13), it is characterized in that: also comprise heat exchanger (2), drum (3), flash vessel (26), generator set (8) and hot water circulating pump (7); Rectifying column (1) connects heat exchanger (2) by the 3rd pipeline (14), and heat exchanger (2) connects return tank (6) by the 4th pipeline (15); Heat exchanger (2) also connects drum (3) by pipeline, drum (3) connects flash vessel (26) by pipeline, flash vessel (26) connects generator set (8) by the 5th pipeline (16), generator set (8) connects hot water circulating pump (7) by the 6th pipeline (17), and hot water circulating pump (7) is connected with heat exchanger (2) by pipeline; Tower top oil gas after rectifying column (1) rectifying enters heat exchanger (2) and carries out heat exchange, returns return tank (6) after cooling; Delivery in heat exchanger (2) after heat exchange is to drum (3), steam is flashed to again through flash vessel (26), steam is delivered to generator set (8) acting generating by the 5th pipeline (16), after steam cooling, turn back to hot water circulating pump (7) by the 6th pipeline (17) again, enter heat exchanger (2) and circulate.
2. a kind of rectifying column air cooling device heat-recovering generating plant according to claim 1, it is characterized in that: described second pipe (13) is arranged air cooling device switching valve (9), it is arranged air cooling device temperature transducer, 4th pipeline (15) arranges heat exchanger switching valve (10), it is arranged heat exchange temperature sensor; Air cooling device temperature transducer, heat exchange temperature sensor are connected to temperature controller (11), and the overhead oil temperature degree recorded is transferred to temperature controller (11); Temperature controller (11) controls the opening and closing of air cooling device switching valve (9), heat exchanger switching valve (10).
3. a kind of rectifying column air cooling device heat-recovering generating plant according to claim 1, is characterized in that: on the first pipeline, arrange air cooling device cut-off valve (18), second pipe arranges heat exchanger cut-off valve (19).
4. a kind of rectifying column air cooling device heat-recovering generating plant according to claim 1, is characterized in that: the 5th pipeline (16) connects steam pipe system.
5. a kind of rectifying column air cooling device heat-recovering generating plant according to claim 1, is characterized in that: described 6th pipeline (17) arranges air cooling device (5).
6. a kind of rectifying column air cooling device heat-recovering generating plant according to claim 1, is characterized in that: described rectifying column (1) return tank (6) is provided with water bag (20).
CN201420716529.9U 2014-11-26 2014-11-26 A kind of rectifying column air cooling device heat-recovering generating plant Active CN204301024U (en)

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CN201420716529.9U CN204301024U (en) 2014-11-26 2014-11-26 A kind of rectifying column air cooling device heat-recovering generating plant

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Application Number Priority Date Filing Date Title
CN201420716529.9U CN204301024U (en) 2014-11-26 2014-11-26 A kind of rectifying column air cooling device heat-recovering generating plant

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104406148A (en) * 2014-11-26 2015-03-11 大连福佳·大化石油化工有限公司 Power generation system capable of recovering waste heat of rectifying tower air cooler
CN108905256A (en) * 2018-08-01 2018-11-30 清水湾Chdm科技有限公司 A kind of multitower rectifying and dewatering power-economizing method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104406148A (en) * 2014-11-26 2015-03-11 大连福佳·大化石油化工有限公司 Power generation system capable of recovering waste heat of rectifying tower air cooler
CN108905256A (en) * 2018-08-01 2018-11-30 清水湾Chdm科技有限公司 A kind of multitower rectifying and dewatering power-economizing method and device

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