EP3171110B1 - Atmospheric distillation column overhead oil-gas heat exchange apparatus and heat exchange method - Google Patents

Atmospheric distillation column overhead oil-gas heat exchange apparatus and heat exchange method Download PDF

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Publication number
EP3171110B1
EP3171110B1 EP16829559.0A EP16829559A EP3171110B1 EP 3171110 B1 EP3171110 B1 EP 3171110B1 EP 16829559 A EP16829559 A EP 16829559A EP 3171110 B1 EP3171110 B1 EP 3171110B1
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EP
European Patent Office
Prior art keywords
shell
heat exchange
water injection
stream
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16829559.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3171110A4 (en
EP3171110A1 (en
Inventor
Jianliang Wang
Xianan Zhang
Xingmiao HU
Yongmiao SHEN
Kuier ZHOU
Huili Ma
Lijiang LIU
Yu Wang
Chenchen MA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhenhai Petrochemical Jianan Engineering Co Ltd
Original Assignee
Zhenhai Petrochemical Jianan Engineering Co Ltd
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Publication of EP3171110A1 publication Critical patent/EP3171110A1/en
Publication of EP3171110A4 publication Critical patent/EP3171110A4/en
Application granted granted Critical
Publication of EP3171110B1 publication Critical patent/EP3171110B1/en
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Classifications

    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
    • C10G9/14—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils in pipes or coils with or without auxiliary means, e.g. digesters, soaking drums, expansion means
    • C10G9/18—Apparatus
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/086—Heat exchange elements made from metals or metal alloys from titanium or titanium alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • 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
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0059—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for petrochemical plants
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/22—Safety or protection arrangements; Arrangements for preventing malfunction for draining

Definitions

  • the present invention relates to a field of a chemical industry equipment and a chemical industry method, and in particular to a heat exchange device for atmospheric tower oil-gas and a heat exchange method thereof.
  • an atmospheric and vacuum distillation unit divides the crude oil into naphtha, aviation kerosene, diesel, kerosene, vacuum residues and other fractions by distillation.
  • the technical distillation level and the stable and efficient operation of this unit are directly relevant to the yield and economical benefits of the subsequent units.
  • the overall quality of the crude oil around the world declines, including declined global yield of light crude oil, rising sulfur content, aggregated oleic performance, and increased exploration difficulty, there is thus a large amount of Cl-containing auxiliaries in the processed crude oil.
  • the units are generally constructed in such a manner that the corrosion is relieved by upgrading materials and enhancing corrosion-resistant measurements "one removal and three injections". Nevertheless, the corrosion and leakage of the atmospheric tower top heat exchanger are still very serious.
  • Most atmospheric tower top heat exchangers are common heat exchangers. Although the grade of materials has been improved because of the anti-corrosion requirements, majority of such atmospheric tower top heat exchangers are still unable to operate for a long period, and tube bundles are likely to be corroded to result in leakage.
  • Some of the atmospheric tower top heat exchangers are welded-plate heat exchangers. Although the materials of such heat exchanges are upgraded, it is likely to result in channel occlusion and leakage due to their poor fluctuation resistance and small circulation channel.
  • UK Patent Publication No. GB-883593 discloses a tube cleaning device for a heat-exchanger.
  • the tube cleaning device comprises a number of jets for cleaning fluid directed substantially axially of the tubes mounted at the inlet end of the heat exchanger.
  • An apertured ring is supplied with cleaning fluid under pressure through a first pipe and jets of fluid sweep over finned tubes in a direction substantially parallel to the axes of the tubes.
  • a set of jets supplied with cleaning fluid through a second pipe branching from the first pipe and disposed within a stay-bar, are located within the latter, the tubes being without fins at this position.
  • EP-0899318 discloses a method for cleaning heavy hydrocarbon scale from a shell and tube heat exchanger or other such equipment incorporated in a device in a petroleum refining plant or the like that processes petroleum hydrocarbons as a raw material.
  • a mixture of petroleum-derived hydrocarbon which can dissolve the oil component of the heavy hydrocarbon scale and an oxygen-containing polar organic compound that promotes dissolution and dispersion is employed as the organic cleaning solvent.
  • Japanese Patent Publication No. JPH-09159393 discloses a method of stable operation of a heat exchanger by conducting warm water through the shell side of the heat exchanger, heating a tube and promoting the peeling of deposit deposited on the inner wall of the tube.
  • the differential pressure on the side of tube of a heat exchanger is detected by a differential pressure detector and when the detected differential pressure exceeds a predetermined value, a heat source water pump is stopped, selector valves that are opened during normal operation are closed and selector valves and are opened.
  • Warm water is circulated in the shell side of the heat exchanger by a warm water producing facility, the tube is heated from the shell side and the peeling off of the deposit deposited on the inner wall of the tube is promoted.
  • the deposit is exhausted outside the heat exchanger by the start-up of the heat source water pump.
  • a first technical problem to be solved by the present invention is, in view of the prior art, to provide a heat exchange device for atmospheric tower oil-gas which can effectively avoid the occlusion of the heat exchanger so as to achieve the purpose of preventing the equipment from corrosion, prolonging the operating period and reducing the operating cost.
  • a second technical problem to be solved by the present invention is to provide an atmospheric tower oil-gas heat exchange method which can effectively avoid the occlusion of the heat exchanger.
  • the heat exchange device for atmospheric tower oil-gas of the present invention comprises a heat exchanger, the heat exchanger comprising a shell having a top, a bottom, a tube pass entrance and a tube pass exit; an upper tube plate and a lower tube plate which both are located within the shell; and heat exchange tubes supported between the upper tube plate and a lower tube plate; an inlet of each heat exchange tube connecting to the tube pass entrance which is arranged on the bottom of the shell, an outlet of each heat exchange tube connecting to the tube pass exit which is arranged on the top of the shell, the tube pass exit and the tube pass entrance used for connecting crude oil flow; a shell pass entrance for connecting to an atmospheric tower oil-gas pipeline arranged on an upper portion of the shell; and a shell pass exit arranged on a lower portion of the shell; characterized in that:
  • annular water injection pipe connected to an external water injection pipeline is arranged within the upper portion of the shell, the annular water injection pipe has multiple water pores communicated to the interior of the shell;
  • the atmospheric tower oil-gas pipeline is connected to the external water injection pipeline via a first water injection pipeline and a third water injection pipeline;
  • a first solenoid valve and a second solenoid valve are respectively arranged on the first water injection pipeline and the third water injection pipeline; and, the annular water injection pipe is communicated to the external water injection pipeline via a second water injection pipeline.
  • the shell has a water inlet, and the external water injection pipeline is communicated to the annular water injection pipe via the water inlet.
  • the annular water injection pipe is located below the upper tube plate and close to the upper tube plate.
  • each heat exchange tube between the upper tube plate and the lower tube plate is coiled around a central axis of the shell.
  • a gas outlet which is communicated to the interior of the shell and used for exhausting gas on the top of the shell during maintenance, is further arranged on the top of the shell, and a liquid outlet for discharging liquid on the bottom of the shell during maintenance is further arranged on the bottom of the shell.
  • each of the heat exchange tubes is a pure-titanium heat exchange tube.
  • the heat exchange method using the heat exchange device for atmospheric tower oil-gas provided in the above solutions comprises the following steps:
  • the heat exchange device for atmospheric tower oil-gas and heat exchange method of the present invention under feeding water to the oil-gas pipeline and washing the shell by the annular water injection pipe, the heat exchange efficiency is effectively improved, the anti-fouling performance is excellent and the resistance against HCl-H 2 S-H 2 O corrosion and under-deposit corrosion is great. Moreover, the stubborn phenomena such as corrosion resulted from ammonium salt crystalline deposit and occlusion resulted from ferrous sulfide are avoided, and the problems of frequent occlusion and leakage or even replacement of the atmospheric tower oil-gas/crude oil head exchanger due to its easy corrosion, leakage, channel occlusion or other factors are solved. Meanwhile, the device has a small pressure drop and a stable operation, so that the safe operating period of the device is greatly increased.
  • the heat exchange device for atmospheric tower oil-gas comprises: a heat exchanger 1 comprising a shell 11, wherein a tube pass exit 18 communicated to each heat exchange tube 5, a water inlet 15 communicated to a second water injection pipeline 32, a gas outlet 10 communicated to the interior of the shell, and a shell pass entrance 12 on a side wall of an upper seal of the heat exchanger are provided on the top of the shell 11 at intervals; and a tube pass entrance 13 communicated to each heat exchange tube 5, a shell pass exit 14 communicated to the interior of the shell and a liquid outlet 19 are provided on the bottom of the shell 11 at intervals.
  • An upper tube plate 16 and a lower tube plate 17 are further provided inside the shell 11.
  • each heat exchange tube 5 is a pure-titanium heat exchange tube for ensuring the anti-corrosion performance of the heat exchange tubes.
  • Upper and lower ends of each of the heat exchange tubes are fixed on the upper tube plate and the lower tube plate respectively.
  • a portion of each heat exchange tubes between the upper tube plate 16 and the lower tube plate 17 is coiled around a central axis of the shell 11 in order to improve the heat exchange efficiency.
  • An annular water injection pipe 6 is provided inside the shell 11 and located close to the upper tube plate 16 and below the upper tube plate 16. Multiple water pores 61 communicated to the interior of the shell are uniformly distributed on the wall of the annular water injection pipe 6. An inlet of the annular water injection pipe 6 is connected to a second water injection pipeline 32 via the water inlet 15.
  • a shell pass entrance 12 is connected to an atmospheric tower oil-gas pipeline 2, a first water injection pipeline 31 and a third water injection pipeline 33 are connected onto the atmospheric tower oil-gas pipeline 2, and both the first water injection pipeline 31 and the third water injection pipeline 33 are connected to an external water injection pipeline 3; and a first solenoid valve 34 and a second solenoid valve 35 are respectively arranged on the first water injection pipeline 31 and the third water injection pipeline 33.
  • Water is fed into the atmospheric tower oil-gas pipeline 2 via the first water injection pipeline 31.
  • the solenoid valves are used for adjusting the water flow.
  • the third water injection pipeline is used for intermittently injecting water into the atmospheric tower oil-gas pipeline 2 for purpose of washing the shell pass at a large water flow.
  • Both the first water injection pipeline 31 and the third water injection pipeline 33 are connected to the external water injection pipeline 3, and solenoid valves are respectively provided on the first water injection pipeline 31 and the third water injection pipeline 33.
  • the two solenoid valves are connected to a control system (not shown in the Figs). The ON, OFF and degree of opening of the two solenoid valves are controlled by the control system, so that the water injection by each water injection pipeline is controlled.
  • a heat exchange method using the atmospheric tower oil-gas head exchange device described above comprising the following steps:
  • the gas outlet 10 is opened to exhaust atmospheric tower oil-gas gathered in the upper portion of the shell.
  • the equipment is disassembled and then washed. Cleaning liquid is injected from the gas outlet 10 and drained from the liquid outlet 19.
  • the service life of an existing common atmospheric tower top heat exhauster is about 1 to 2 years, and the whole existing common atmospheric tower top heat exhauster or the whole tube bundle needs to be replaced when corrosion and leakage occur.
  • the existing common atmospheric tower top heat exchanger needs to be frequently cleaned due to channel occlusion.
  • the equipment body has excellent corrosion resistance and anti-fouling performance, and within two operating periods (i.e., 8 years), no fouling (thus occlusion) and corrosion (thus leakage) occurs. Therefore, a large amount of cost for equipment replacement and maintenance is saved.

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  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
EP16829559.0A 2015-07-30 2016-07-26 Atmospheric distillation column overhead oil-gas heat exchange apparatus and heat exchange method Active EP3171110B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510460303.6A CN104964583B (zh) 2015-07-30 2015-07-30 常压塔顶油气换热装置及换热方法
PCT/CN2016/000416 WO2017016187A1 (zh) 2015-07-30 2016-07-26 常压塔顶油气换热装置及换热方法

Publications (3)

Publication Number Publication Date
EP3171110A1 EP3171110A1 (en) 2017-05-24
EP3171110A4 EP3171110A4 (en) 2018-04-18
EP3171110B1 true EP3171110B1 (en) 2019-03-27

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Application Number Title Priority Date Filing Date
EP16829559.0A Active EP3171110B1 (en) 2015-07-30 2016-07-26 Atmospheric distillation column overhead oil-gas heat exchange apparatus and heat exchange method

Country Status (5)

Country Link
EP (1) EP3171110B1 (ja)
JP (1) JP6315869B2 (ja)
KR (1) KR101848697B1 (ja)
CN (1) CN104964583B (ja)
WO (1) WO2017016187A1 (ja)

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Publication number Priority date Publication date Assignee Title
CN106840905B (zh) * 2017-04-20 2023-04-07 重庆科技学院 油气管道压力综合教学实验装置
JP6648814B1 (ja) * 2018-12-27 2020-02-14 栗田工業株式会社 蒸留塔の差圧解消方法
JP6933238B2 (ja) * 2018-12-27 2021-09-08 栗田工業株式会社 蒸留塔の差圧解消方法
CN110373222B (zh) * 2019-07-29 2024-06-14 镇海石化建安工程股份有限公司 一种具有缠绕管式换热器的常减压换热系统及换热工艺
CN114440698A (zh) * 2020-11-05 2022-05-06 南京科技职业学院 一种脱脂碱洗换热器减少管式炉烧穿炉门的方法
CN115597402B (zh) * 2022-09-30 2023-08-04 镇海石化建安工程股份有限公司 一种用于加氢装置的换热组件及换热工艺
CN118517932B (zh) * 2024-07-23 2024-10-01 江苏润睿生物科技有限公司 一种基于密封防漏管件的换热器及油酸生产的换热方法

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CN202902937U (zh) * 2012-11-02 2013-04-24 镇海石化建安工程有限公司 一种换热器结构
CN103453782B (zh) * 2013-09-18 2015-01-28 南京都乐制冷设备有限公司 三位一体壳管式油气换热器
CN103673693A (zh) * 2013-12-10 2014-03-26 山东蓝星清洗防腐公司 新型原油常压塔顶油气换热器
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CN104697393A (zh) * 2015-03-16 2015-06-10 北京中科华誉热泵设备制造有限公司 一种配备喷淋式清洗结构的壳管干式蒸发器
CN204478881U (zh) * 2015-03-17 2015-07-15 江苏国信淮安燃气发电有限责任公司 水浴炉加热系统的二次热交换水箱
CN204987954U (zh) * 2015-07-30 2016-01-20 镇海石化建安工程有限公司 常压塔顶油气换热装置

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Also Published As

Publication number Publication date
EP3171110A4 (en) 2018-04-18
KR101848697B1 (ko) 2018-05-28
CN104964583B (zh) 2017-01-11
EP3171110A1 (en) 2017-05-24
JP6315869B2 (ja) 2018-04-25
WO2017016187A1 (zh) 2017-02-02
CN104964583A (zh) 2015-10-07
KR20170023989A (ko) 2017-03-06
JP2017532388A (ja) 2017-11-02

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