KR20170026678A - Winterization system with waste heat of compressor package - Google Patents

Winterization system with waste heat of compressor package Download PDF

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Publication number
KR20170026678A
KR20170026678A KR1020150120016A KR20150120016A KR20170026678A KR 20170026678 A KR20170026678 A KR 20170026678A KR 1020150120016 A KR1020150120016 A KR 1020150120016A KR 20150120016 A KR20150120016 A KR 20150120016A KR 20170026678 A KR20170026678 A KR 20170026678A
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KR
South Korea
Prior art keywords
circulation
medium
compression system
chamber
cooling
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Application number
KR1020150120016A
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Korean (ko)
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KR101744049B1 (en
Inventor
박광우
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삼성중공업 주식회사
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Priority to KR1020150120016A priority Critical patent/KR101744049B1/en
Publication of KR20170026678A publication Critical patent/KR20170026678A/en
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Publication of KR101744049B1 publication Critical patent/KR101744049B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/12—Heating; Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B63B17/04—Stanchions; Guard-rails ; Bulwarks or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B19/00—Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B29/00—Accommodation for crew or passengers not otherwise provided for
    • B63B29/02—Cabins or other living spaces; Construction or arrangement thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B29/00—Accommodation for crew or passengers not otherwise provided for
    • B63B29/20—Arrangements or adaptations of ladders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers

Abstract

The present invention discloses a freeze protection system using waste heat of a compression system. According to an exemplary embodiment of the present invention, the freeze protection system using waste heat of a compression system comprises: an expansion tank where a circulation medium is stored; a first pump circulating the circulation medium along a first circulation route, and performing a heat exchange with high-pressure gas passing through the compression system by interacting with the compression system; and a second pump circulating the circulation medium along a second circulation route, and performing a freeze protection treatment by transmitting heat to target facilities arranged on the second circulation route. Accordingly, the present invention is more economical than an electric heater in terms of an initial unit installment, and is made to have a closed loop system, thus resulting in comparatively small heat medium loss.

Description

[0001] The present invention relates to a freezing prevention system using waste heat of a compression system,

The present invention relates to a freeze prevention system utilizing waste heat of a compression system.

Generally, a guard rail, a handrail, a wall, a door, a stairway, and the like installed in an offshore structure such as a platform installed in the North Sea Winterization is required due to local characteristics.

In this case, as disclosed in Korean Patent Laid-Open Publication No. 2013-0055086, in the case of the freeze prevention treatment, electric heat is generated by using an apparatus such as an electric heater. However, a separate electric heater is required , Electricity is used and the price is expensive.

The offshore product for oil / gas transfer is equipped with a multi-stage compressor to produce high pressure fluid for smooth fluid transfer.

For smooth compression, a cooler and a scrubber are usually installed at the rear end of the compressor. The temperature of the high-pressure fluid is lowered through the cooler, and a scrubber is installed to store liquid such as water generated in the process.

Various methods for utilizing the waste heat in a compression system including a cooler and a scrubber have been proposed.

Korean Patent Laid-Open Publication No. 2013-0055086 (published on Feb. 31, 2013) - Method of preheating hot water of boiler using electric heater for freeze prevention

The present invention utilizes waste heat by performing freeze prevention processing on items such as a platform required by the North Sea Corporation and hand rails and stairs such as FPSO utilizing the high temperature medium obtained from the cooler of the compression system and the water generated at the rear end of the scrubber The present invention provides a freeze prevention system using waste heat of a compression system that is more economical than an electric heater compared to an initial unit installation cost, and a method of operating the same.

An object of the present invention is to provide a freeze prevention system using a waste heat of a compression system constituted by a closed loop system and having a relatively small thermal medium loss and a method of operating the system.

The present invention provides a freeze prevention system using waste heat of a compression system capable of maximizing space utilization by producing a cooler and a scrubber in an integrated form and recycling the water generated after cooling to a thermal medium for freeze prevention treatment .

Other objects of the present invention will become readily apparent from the following description.

According to an aspect of the present invention, there is provided an expansion tank comprising: an expansion tank in which a circulating medium is stored; A first pump circulating the circulation medium along a first circulation path to interact with the compression system to effect heat exchange with the high pressure gas passing through the compression system; And a second pump circulating the circulation medium along a second circulation path and transferring heat to the target facility disposed on the second circulation path to perform a freeze prevention treatment, Prevention system is provided.

The compression system includes: a first chamber having a gas inlet through which the high-pressure gas flows; A cooling chamber installed at a lower portion of the first chamber and having a circulation medium inlet through which the circulation medium flows into the upper portion of one side and a circulation medium outlet through which the circulation medium is discharged from the upper side of the cooling chamber; A second chamber provided at a lower portion of the cooling chamber and provided with a gas outlet through which the high pressure gas passed through the cooling chamber is discharged and a drain pipe for collecting water generated by cooling the high pressure gas, Wherein the cooling chamber functions as a cooler of the compression system and the second chamber functions as a scrubber of the compression system.

The drain pipe may be an inflow path through which the end of the drain pipe is connected to the second circulation path, and the collected water may flow into the second circulation path and be stored in the expansion tank as the circulation medium.

Wherein the cooling chamber includes a cooling pipe in which an inlet port communicates with the first chamber and an outlet port communicates with the second chamber in a zigzag shape, and the high-pressure gas and the circulating medium exchange heat with each other through the cooling pipe, The gas may be cooled and the circulating medium may be heated.

Other aspects, features, and advantages will become apparent from the following drawings, claims, and detailed description of the invention.

According to the embodiment of the present invention, by using the high-temperature medium obtained from the cooler of the compression system and the water generated at the rear end of the scrubber, it is possible to perform anti-freeze treatment for the items such as platform, FPSO, It is more economical to use the waste heat than the electric heater in comparison with the initial unit installation cost.

In addition, it is constituted by a closed loop system, the thermal medium loss is relatively small, the cooler and the scrubber are integrally formed to maximize the space utilization, and the water generated after cooling can be recycled as the thermal medium for the anti- .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a freeze prevention system utilizing waste heat of a compression system according to an embodiment of the present invention;
Figure 2 is a cross-sectional view of an integrated compression system in accordance with an embodiment of the present invention;
FIG. 3 is a view illustrating a facility for an offshore structure in which a circulation medium tube according to an embodiment of the present invention is installed,
4 is a flowchart of a method for operating a freeze prevention system using heat recovery of a compression system according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Also, the terms "part," "unit," and the like described in the specification mean units for processing at least one function or operation, and may be implemented by hardware, software, or a combination of hardware and software.

It is to be understood that the components of the embodiments described with reference to the drawings are not limited to the embodiments and may be embodied in other embodiments without departing from the spirit of the invention. It is to be understood that although the description is omitted, multiple embodiments may be implemented again in one integrated embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a schematic block diagram of a freeze protection system utilizing waste heat of a compression system according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of an integrated compression system according to an embodiment of the present invention.

The freeze prevention system utilizing the waste heat of the compression system according to an embodiment of the present invention recovers and stores the waste heat generated when the compression system is operated and performs freeze prevention processing by circulating the stored heat, Water as a circulating medium.

In this embodiment, the compression system is connected to the downstream end of the multi-stage compressor to cool the high-temperature and high-pressure gas and collect water generated in the cooling process. The cooler and the scrubber are integrated.

1 and 2 show a freezing prevention system 100, a compression system 200, a cooler 210, a scrubber 220, an expansion tank 110, a first circulation path 10, a first pump 112, The second circulation path 20, the second pump 142, the target facility 144, the inflow path 30, the first chamber 252, the second chamber 256, the cooling chamber 254, the gas inlet 261, a gas outlet 262, a circulating medium inlet 271, a circulating medium outlet 272, a cooling pipe 280, and a drain pipe 258 are shown.

The freezing prevention system 100 according to the present embodiment includes a first pump 112 disposed on the first circulation path 10, an expansion tank 110 for storing and storing the water generated in the compression system 200, A second pump 142 and an object facility 144 disposed on the second circulation path 20.

The circulation medium stored in the expansion tank 110 is circulated through the first circulation path 10 in the heat exchanging manner in the cooler 210 of the compression system 200 and is circulated through the second circulation path 20, The heat of the circulating medium stored in the expansion tank 110 can be transferred to the target facility 144 that requires freeze prevention to perform the anti-freezing process. The second circulation path 20 is connected to the inflow path 30 through which the water corresponding to the circulation medium is introduced from the scrubber 220 of the compression system 200. The circulation medium is additionally supplied to the expansion tank 110 .

First, the first circulation path 10 will be described as follows.

The expansion tank 110 is a space for storing a circulation medium of a fluid type circulating along at least one of the first circulation path 10 and the second circulation path 20. [ The expansion tank 110 changes the volume of the entire system as the volume of the fluid increases or shrinks when the fluid temperature is increased or decreased due to the circulation medium being cooled by the cooler 210 to acquire heat or to the target facility 144 Absorbs the amount and prevents overflow.

The inflow path 30 is connected to the second circulation path 20 so that the water generated in the scrubber 220 of the compression system 200 flows into the circulation medium and is sent to the expansion tank 110 do.

The water generated in the compression system 200 flows into the second circulation path 20 through the inflow path 30 and is stored in the expansion tank 110 to be utilized as a circulating medium, After the predetermined amount of the circulating medium is stored in the expansion tank 110, the inflow of the circulation medium through the inflow path 30 is blocked so that the expansion tank 110 can effectively absorb the volume change due to the increase or decrease of the fluid temperature.

When the first pump 112 performs the pumping operation, the circulating medium stored in the expansion tank 110 is circulated along the first circulation path 10 in a predetermined direction. Although it is shown in FIG. 1 as being counterclockwise, it goes without saying that it may be circulated clockwise according to an embodiment.

A cooler 210 is disposed on the first circulation path 10, and the circulation medium performs heat exchange with the high-pressure gas at a high temperature in the cooler 210.

Referring to FIG. 2, a cooler 210 and a scrubber 220 are integrated with the compression system 200 according to the present embodiment.

The compression system 200 is divided into spaces in the order of the first chamber 252, the cooling chamber 254, and the second chamber 256. In the first chamber 252, a gas inlet 261 is provided, and the high-temperature, high-pressure gas compressed by the compressor at the previous stage flows into the first chamber 252.

A cooling chamber 254 is disposed below the first chamber 252 and a cooling pipe 280 connecting the first chamber 252 and the second chamber 256 is formed in a zigzag shape Respectively. The inlet of the cooling line 280 leads to the first chamber 252 and the outlet to the second chamber 256.

A circulation medium inlet 271 is formed at an upper portion of one side of the cooling chamber 254 and a circulation medium outlet 272 is formed at a lower side of the cooling chamber 254. The circulation medium circulating along the first circulation path 10 flows through the circulation medium inlet 271 and then discharged through the circulation medium outlet 272. In the course of discharging the circulation medium through the circulation medium outlet 272, Instead of performing the exchange and cooling the high pressure gas, the circulation medium acquires heat.

The high pressure gas entering the second chamber 256 through the cooling pipe 280 collects water generated in the cooling process in the lower portion of the chamber and is transferred to the inflow path 30 through the drain pipe 258. The high-pressure gas is discharged to the outside of the compression system 200 through the gas outlet 262.

Referring again to FIG. 1, when the temperature of the circulating medium circulating along the first circulating path 10 circulates through the cooler 210 several times and reaches a predetermined temperature, the circulating medium circulates along the second circulating path 20 .

To this end, a valve (not shown) is provided at a branch point between the first circulation path 10 and the second circulation path 20, so that the circulation path of the circulation medium can be adjusted by opening and closing the valve. When the valve is closed, the circulating medium circulates only through the first circulating path 10, and when the valve is open, the circulating medium can circulate along the second circulating path 20 .

A target facility 144, for example a platform, an FPSO handrail, a stairway, etc., where freeze protection is required is disposed on the second circulation path 20, and the second pump 142 And performs a pumping operation.

The circulation medium stored in the expansion tank 110 is circulated along the second circulation path 20 by the pumping operation of the second pump 142 and the heat exchange is performed through the target facility 144 in the circulation process Thereby preventing the target facility 144 from freezing. That is, the heat of the high-temperature high-pressure gas corresponding to waste heat in the compression system 200 can be utilized for preventing freezing.

Also, in this process, the temperature of the circulating medium is lowered so that it can function properly as a cooling medium in the cooling process along the first circulation path 10.

The circulating medium circulating through the second circulation path 20 is again collected and stored in the expansion tank 110. When the temperature of the circulation medium is lower than a predetermined temperature, the circulation medium is circulated along the first circulation path 10 The temperature can be raised.

Also, in this embodiment, the inflow path 30 through which the water discharged from the scrubber 220 flows is connected to the middle of the second circulation path 20, so that the circulation medium can be additionally supplied. The water discharged from the scrubber 220 is water collected in the lower part of the second chamber 256 in FIG. 2 and supplied into the second circulation path 20 through the drain pipe 258 to be supplied to the expansion tank 110 .

The process of performing the freeze prevention process in the target facility 144 disposed on the second circulation path 20 will be described with reference to the related drawings.

FIG. 3 is a view showing an installation of an offshore structure in which a circulation medium tube according to an embodiment of the present invention is installed.

3, a circulation medium tube 22 is installed in a guide rail 144a installed on an upper part of a handrail and a stairway of an offshore structure, and is included in the second circulation path 20 .

The circulation medium of the high temperature stored in the expansion tank 110 is circulated through the circulation medium tube 22 so that it is possible to perform the freeze prevention treatment without using the electric heater as described above.

4 is a flowchart of a method for operating a freeze prevention system using heat recovery of a compression system according to an embodiment of the present invention.

Each of the steps of FIG. 4 may be performed by each component and / or a control unit (not shown) of the freeze prevention system 100 utilizing the waste heat of the compression system shown in FIG. Here, the control unit is a component that controls each component of the anti-freezing system 100 to exert the aforementioned function.

First, the control unit confirms whether the compression system 200 operates according to the operation of the compressor (step S400). If the compression system 200 does not operate, it is not possible to utilize the circulation medium and the waste heat, so whether the compression system 200 is operated periodically or at any time interval until the compression system 200 is operated Check.

When the compression system 200 is operated, the process proceeds to step S410 where the circulation medium stored in the expansion tank 110 through interaction with the compression system 200 is cooled by the high-temperature and high-pressure gas passing through the compression system 200, Acquire the heat in exchange.

First, the first pump 112 is operated to circulate the circulating medium through the first circulation path 10 (step S412).

The temperature of the circulating medium passing through the cooler 210 is measured using a temperature sensor (not shown) and it is determined whether or not the temperature is higher than the target value (step S414).

If the temperature of the circulating medium has not reached the target value, the process returns to step S412 to repeat the circulation through the first circulation path 10. [

When the temperature of the circulation medium reaches the target value, the circulation through the first circulation path 10 is stopped to stop the heat exchange (step S416).

During this process, it is determined whether or not freezing prevention is necessary for the target facility 144 installed in the offshore structure (step S420). The determination of freeze prevention may be made based on whether the period of the freezing prevention process is periodically performed, whether facilities requiring freezing prevention treatment are found by the inspection of the shipowner, and the like.

If it is necessary to prevent freezing, the process proceeds to step S430 where the high-temperature circulating medium stored in the expansion tank 110 is circulated through the second circulation path 20.

The target facility 144 is disposed on the second circulation path 20 and heat is transferred to the target facility 144 in a heat exchange manner while the hot circulation medium passes the target facility 144 to perform freeze prevention processing (Step S440).

The water generated in the scrubber 220 of the compression system 200 flows into the inflow path 30 during the process of returning to the expansion tank 110 through the second circulation path 20, (Step S450).

According to the present embodiment, the circulation medium for preventing freezing is not separately provided, but the water generated in the compression system that has been previously abandoned can be recycled, thereby maximizing the efficiency.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims And changes may be made without departing from the spirit and scope of the invention.

100: Freezing prevention system 110: Expansion tank
112: first pump 142: second pump
144: Target facility 10: First circulation path
20: second circulation path 30: inflow path
200: Compression system 210: Cooler
220: scrubber 252: first chamber
254: Cooling chamber 256: Second chamber
261: gas inlet 262: gas outlet
271: Circulating medium inlet 272: Circulating medium outlet
280: Cooling piping 258: Drain piping

Claims (4)

An expansion tank in which a circulating medium is stored;
A first pump circulating the circulation medium along a first circulation path to interact with the compression system to effect heat exchange with the high pressure gas passing through the compression system; And
And a second pump circulating the circulation medium along a second circulation path and transferring heat to the target facility disposed on the second circulation path to perform a freeze prevention treatment, system. The method according to claim 1,
The compression system comprises:
A first chamber having a gas inlet through which the high-pressure gas flows;
A cooling chamber installed at a lower portion of the first chamber and having a circulation medium inlet through which the circulation medium flows into the upper portion of one side and a circulation medium outlet through which the circulation medium is discharged from the upper side of the cooling chamber;
A second chamber provided at a lower portion of the cooling chamber and provided with a gas outlet through which the high pressure gas passed through the cooling chamber is discharged and a drain pipe for collecting water generated by cooling the high pressure gas, Including,
Wherein the cooling chamber functions as a cooler of the compression system and the second chamber functions as a scrubber of the compression system. 3. The method of claim 2,
Wherein the drain pipe is an inflow path whose end is connected to the second circulation path,
Wherein the waste water is introduced into the second circulation path and is stored in the expansion tank as the circulation medium. 3. The method of claim 2,
Wherein the cooling chamber includes a cooling pipe having an inlet communicating with the first chamber and an outlet communicating with the second chamber in a zigzag shape,
And the waste heat of the compression system in which the high-pressure gas and the circulating medium exchange heat through the cooling pipe to cool the high-pressure gas and heat the circulating medium.
KR1020150120016A 2015-08-26 2015-08-26 Winterization system with waste heat of compressor package KR101744049B1 (en)

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KR1020150120016A KR101744049B1 (en) 2015-08-26 2015-08-26 Winterization system with waste heat of compressor package

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112460695A (en) * 2020-11-19 2021-03-09 珠海格力电器股份有限公司 Water circulation power module, anti-freezing control method thereof and air conditioning unit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130055086A (en) 2011-11-18 2013-05-28 린나이코리아 주식회사 Method for preheating hot-water of a boiler using the electric heater for preventing ferrzing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101487945B1 (en) * 2013-07-24 2015-01-30 삼성중공업 주식회사 Winterization system with flare heat recovery system and operating method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130055086A (en) 2011-11-18 2013-05-28 린나이코리아 주식회사 Method for preheating hot-water of a boiler using the electric heater for preventing ferrzing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112460695A (en) * 2020-11-19 2021-03-09 珠海格力电器股份有限公司 Water circulation power module, anti-freezing control method thereof and air conditioning unit
CN112460695B (en) * 2020-11-19 2022-04-15 珠海格力电器股份有限公司 Water circulation power module, anti-freezing control method thereof and air conditioning unit

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