WO2015082767A1 - Method and steam heat exchanger arrangement for thermal control of the content in a vessel space of a vessel - Google Patents

Method and steam heat exchanger arrangement for thermal control of the content in a vessel space of a vessel Download PDF

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Publication number
WO2015082767A1
WO2015082767A1 PCT/FI2014/050934 FI2014050934W WO2015082767A1 WO 2015082767 A1 WO2015082767 A1 WO 2015082767A1 FI 2014050934 W FI2014050934 W FI 2014050934W WO 2015082767 A1 WO2015082767 A1 WO 2015082767A1
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WO
WIPO (PCT)
Prior art keywords
vessel
condensate
heat exchanger
steam
exchanger arrangement
Prior art date
Application number
PCT/FI2014/050934
Other languages
French (fr)
Inventor
Antti Saarikoski
Manu VESANEN
Original Assignee
Outotec (Finland) Oy
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Publication date
Application filed by Outotec (Finland) Oy filed Critical Outotec (Finland) Oy
Publication of WO2015082767A1 publication Critical patent/WO2015082767A1/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
    • 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
    • F28D7/163—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 with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1653—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 with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/02—Apparatus therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/02—Supplying steam, vapour, gases, or liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05341—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/06—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0131—Auxiliary supports for elements for tubes or tube-assemblies formed by plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to a method for thermal control of the content in a vessel space of a vessel such as a hydrometallurgical reactor as defined in the preamble of independent claim 1.
  • the invention also relates to a steam heat exchanger for thermal control of the content in a vessel space of a vessel such as a hydrometallurgical reactor as defined in the preamble of independent claim 9.
  • a steam heat exchanger includes a steam heating pipe with a condensation pipe part and a sensible heat pipe part provided on the lower side of the condensation pipe part.
  • a liquid is heated by latent heat.
  • the drain discharge capacity in a steam trap or an orifice disposed on the drain discharge side equals the amount of condensation at the service temperature of the steam heat exchanger.
  • Condensed water produced after the heat exchange in the condensation pipe part enters the sensible heat pipe part on the downstream side to hold the sensible heat pipe part in a water sealed state.
  • the liquid is heated by sensible heat. Heat exchange efficiency is improved by using latent and sensible heat, the amount of steam used can be reduced, and the load of a steam generation source can be reduced.
  • the object of the invention is to provide an efficient method and steam heat exchanger for thermal control of the content in a vessel space of a vessel such as a hydrometallurgical reactor.
  • the method for thermal control of the content in a vessel space of a vessel such as a hydrometallurgical reactor of the invention is characterized by the definitions of independent claim 1.
  • the steam heat exchanger for thermal control of the content in a vessel space of a vessel such as a hydrometallurgical reactor of the invention is correspondingly characterized by the definitions of independent claim 9.
  • the lower manifold is in fluid communication with the condensate pipe through a condensate well, which is arranged at a level below the lower manifold, and which is in fluid communication with the lower manifold for receiving condensate from the lower manifold.
  • the condensate pipe has an inlet opening that is horizontally arranged in the condensate well and that faced downwardly into the condensate well. This embodiment prevents effectively steam and condensate from simultaneously entering the condensate pipe through the inlet opening and reduces the hammering effect (also called "hydraulic shock") inside the condensate pipe.
  • a such embodiment also a positive effect on the phase change from steam to condensate and consequently a positive effect on the amount of thermal energy transferred from the steam.
  • the condensate pipe has preferably, but not necessarily, a smaller inner cross- section than the inner cross-section of each of said vertically disposed heat transfer pipes. This has a positive effect on the ability to draw, for example to pump, condensate out of the steam heat exchanger arrangement regardless of the height of the vessel. This especially important if condensate is removed via an open top of a high vessel.
  • At least one of the upper manifold and the lower manifold comprises a plate means, which forms a part of an outer wall structure of the manifold that limits an inner manifold space and which is penetrated by the vertically disposed condensation heat transfer pipes.
  • the steam heat exchanger arrangement comprises a rail structure for releasable suspending the steam heat exchanger arrangement in a vessel space of a vessel from a roof structure of the vessel.
  • a such rail structure makes it unnecessary to fasten the steam heat exchanger arrangement to the walls of the vessel.
  • the rail structure allows moving of parts of the steam heat exchanger arrangement with respect to the rail structure due to thermal expansion.
  • the rail structure allows also removal of the steam heat exchanger arrangement from and inserting of the steam heat exchanger arrangement into the vessel space of the vessel without a need for compete emptying of all content from the vessel space of the vessel.
  • Figure 1 shows a steam heat exchanger arrangement according to an embodiment
  • Figure 2 shows the steam heat exchanger arrangement shown in figure 1 as seen from one side
  • Figure 3 shows a part of the lower end of the steam heat exchanger arrangement shown in figure 1,
  • Figure 4 shows in partly cut state a part of the lower end of the steam heat exchanger element shown in figure 1,
  • Figure 5 shows the lower end of the steam heat exchanger shown in figure 1
  • Figure 6 shows the upper end of the steam heat exchanger shown in figure 1
  • Figure 7 shows the upper end of the steam heat exchanger shown in figure 1
  • Figure 8 shows the upper end of the steam heat exchanger shown in figure 1
  • Figure 9 shows the rail element of the steam heat exchanger element shown in figure 1
  • Figure 10 shows in partly cut view a vessel that is provided with a steam heat exchanger arrangement as shown in figure 1. Detailed description of the invention
  • the invention relates to a method for thermal control of the content (not shown in the figures) in a vessel space of a vessel 1 such as a hydrometallurgical reactor and to a steam heat exchanger arrangement 2 for thermal control of the content in a vessel space of a vessel 1 such as a hydrometallurgical reactor.
  • a vessel space 3 of a vessel 1 such as a hydrometallurgical vessel and some embodiments and variants of the method will be described in greater detail.
  • the method comprises using a steam heat exchanger arrangement 2 comprising vertically disposed condensation heat transfer pipes 4, an upper manifold 5 connected to an upstream of each of the vertically disposed condensation heat transfer pipes 4, a lower manifold 6 connected to a downstream of each of the vertically disposed condensation heat transfer pipes 4, and condensate pipe 7 in fluid communication through an inlet opening 8 with the lower manifold 6 for leading steam or condensate from the lower manifold 6 and wherein the condensate pipe 7 having an outlet opening 9 for leading condensate from the condensate pipe 7.
  • the method comprises immersing the steam heat exchanger arrangement 2 at least partly into the content in the vessel space 3 of the vessel 1.
  • the method comprises leading steam to the upper manifold 5 of the steam heat exchanger arrangement 2.
  • the method comprises distributing steam to the vertically disposed condensation heat transfer pipes 4 from the upper manifold 5.
  • the method comprises conducting steam in the vertically disposed condensation heat transfer pipes 4 in the direction from the upper manifold 5 towards the lower manifold 6 to exchange thermal energy between steam flowing in the vertically disposed condensation heat transfer pipes 4 and the content in the vessel space 3 of the vessel 1.
  • the method comprises receiving steam or condensate in the lower manifold 6 from the vertically disposed condensation heat transfer pipes 4.
  • the method comprises draining steam or condensate from the lower manifold 6 to the condensate pipe 7.
  • the method comprises providing the outlet opening 9 of the condensate pipe 7 with a steam trap 10 for controlling the flow of condensate from the outlet opening 9 of the condensate pipe 7.
  • the method comprises controlling the flow of condensate from the outlet opening 9 of the condensate pipe 7 by the steam trap 10 to prevent steam from exiting the condensate pipe 7.
  • An embodiment of the method comprises using a steam heat exchanger arrangement 2, where the lower manifold 6 is in fluid communication with the inlet opening 8 of the condensate pipe 7 through a condensate well 11 that is arranged at a level below the lower manifold 6 and that is in fluid communication with the lower manifold 6 for receiving condensate from the lower manifold 6.
  • This embodiment of the method comprises arranging the inlet opening 8 of the condensate pipe 7 horizontally in the condensate well 11 so that the inlet opening 8 faces downwardly into the condensate well 11.
  • This embodiment of the method may comprise providing the condensate well 11 with a releasable fastened bottom 12.
  • This embodiment of the method may comprise using a condensate pipe 7 having a smaller inner cross-section than the inner cross-section of each of said vertically disposed heat transfer pipes 4.
  • An embodiment of the method comprises using a steam heat exchanger arrangement 2, where at least one of the upper manifold 5 and the lower manifold 6 comprises a plate means 13, which forms a part of a manifold shell structure 14 of the manifold that limits an inner manifold space and which is penetrated by the vertically disposed condensation heat transfer pipes 4.
  • An embodiment of the method comprises using a steam heat exchanger arrangement 2 comprising a rail structure 15.
  • This embodiment comprises suspending the steam heat exchanger arrangement 2 releasable in the vessel space 3 of the vessel 1 from a roof structure 17 of the vessel 1 by means of the rail structure 15.
  • This embodiment of the method may comprise providing the rail structure 15 with a baffle means 16 for enhancing mixing of the content in the vessel space 3 of the vessel 1.
  • This embodiment of the method may comprise providing the rail structure 15 being with standing support 19 a for supporting the steam heat exchanger arrangement 2 in the vessel space 3 of the vessel 1 on a bottom structure 18 of the vessel 1, and supporting the steam heat exchanger arrangement 2 releasable in the vessel space 3 of the vessel 1 on a bottom structure 18 of the vessel 1 by means of standing support 19 of the rail structure 15.
  • the vessel 1 shown in figure 6 comprises an agitator 20 in the vessel space 3 of the vessel 1.
  • the steam heat exchanger arrangement 2 comprises vertically disposed condensation heat transfer pipes 4.
  • the steam heat exchanger arrangement 2 comprises an upper manifold 5 connected to an upstream of each of the vertically disposed condensation heat transfer pipes 4.
  • the steam heat exchanger arrangement 2 comprises a lower manifold 6 connected to a downstream of each of the vertically disposed condensation heat transfer pipes 4.
  • the steam heat exchanger arrangement 2 comprises a condensate pipe 7 in fluid communication with the lower manifold 6 for leading condensate from the lower manifold 6.
  • the steam heat exchanger arrangement 2 comprises a steam trap 10 for controlling the flow of condensate from the condensate pipe 7.
  • the lower manifold 6 is in fluid communication with the condensate pipe 7 through a condensate well 11, which is arranged at a level below the lower manifold 6, and which is in fluid communication with the lower manifold 6 for receiving condensate from the lower manifold 6.
  • the condensate pipe 7 has an inlet opening 8 that is horizontally arranged in the condensate well 11 and that faced downwardly into the condensate well 11.
  • the condensate well 11 may be provided with a releasable fastened bottom 12.
  • the condensate pipe 7 may have a smaller inner cross-section than the inner cross-section of each of said vertically disposed heat transfer pipes 4.
  • At least one of the upper manifold 5 and the lower manifold 6 comprising a plate means 13, which forms a part of an outer wall structure of the manifold that limits an inner manifold space and which is penetrated by the vertically disposed condensation heat transfer pipes 4.
  • the steam heat exchanger arrangement 2 comprising a rail structure 15 for releasable suspending the steam heat exchanger arrangement 2 in a vessel space 3 of a vessel from a roof structure 17 of the vessel 1.
  • the rail structure 15 may be provided with a baffle means 16 for enhancing mixing of the content in the vessel space 3 of the vessel 1.
  • the rail structure 15 may be provided with a standing support 19 for supporting the steam heat exchanger arrangement 2 in the vessel space 3 of the vessel 1 on a bottom structure 18 of the vessel 1 by means of standing support 19 of the rail structure 15.

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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention relates to a method and to a steam heat exchanger arrangement (2) for thermal control of the content in a vessel space (3) of a vessel (1) such as a hydrometallurgical reactor. The steam heat exchanger arrangement (2) comprises vertically disposed condensation heat transfer pipes (4), an upper manifold (5) connected to an upstream of each of the vertically disposed condensation heat transfer pipes (4), a lower manifold (6) connected to a downstream of each of the vertically disposed condensation heat transfer pipes (4), a condensate pipe (7) in fluid communication with the lower manifold (6) for leading condensate from the lower manifold (6), and by a steam trap (10) for controlling the flow of condensate from the condensate pipe (7).

Description

METHOD AND STEAM HEAT EXCHANGER ARRANGEMENT FOR THERMAL CONTROL OF THE CONTENT IN A VESSEL SPACE OF A VESSEL Field of the invention
The invention relates to a method for thermal control of the content in a vessel space of a vessel such as a hydrometallurgical reactor as defined in the preamble of independent claim 1.
The invention also relates to a steam heat exchanger for thermal control of the content in a vessel space of a vessel such as a hydrometallurgical reactor as defined in the preamble of independent claim 9.
Publication US 8,443,870 presents a steam heat exchanger includes a steam heating pipe with a condensation pipe part and a sensible heat pipe part provided on the lower side of the condensation pipe part. In the condensation pipe part, a liquid is heated by latent heat. The drain discharge capacity in a steam trap or an orifice disposed on the drain discharge side equals the amount of condensation at the service temperature of the steam heat exchanger. Condensed water produced after the heat exchange in the condensation pipe part enters the sensible heat pipe part on the downstream side to hold the sensible heat pipe part in a water sealed state. In this sensible heat pipe part, the liquid is heated by sensible heat. Heat exchange efficiency is improved by using latent and sensible heat, the amount of steam used can be reduced, and the load of a steam generation source can be reduced.
Objective of the invention
The object of the invention is to provide an efficient method and steam heat exchanger for thermal control of the content in a vessel space of a vessel such as a hydrometallurgical reactor.
Short description of the invention
The method for thermal control of the content in a vessel space of a vessel such as a hydrometallurgical reactor of the invention is characterized by the definitions of independent claim 1.
Preferred embodiments of the method are defined in the dependent claims 2 to 8.
The steam heat exchanger for thermal control of the content in a vessel space of a vessel such as a hydrometallurgical reactor of the invention is correspondingly characterized by the definitions of independent claim 9.
Preferred embodiments of the steam heat exchanger are defined in the dependent claims
10 to 16.
In an embodiment the lower manifold is in fluid communication with the condensate pipe through a condensate well, which is arranged at a level below the lower manifold, and which is in fluid communication with the lower manifold for receiving condensate from the lower manifold. In this embodiment of the steam heat exchanger the lower manifold, the condensate pipe has an inlet opening that is horizontally arranged in the condensate well and that faced downwardly into the condensate well. This embodiment prevents effectively steam and condensate from simultaneously entering the condensate pipe through the inlet opening and reduces the hammering effect (also called "hydraulic shock") inside the condensate pipe. A such embodiment also a positive effect on the phase change from steam to condensate and consequently a positive effect on the amount of thermal energy transferred from the steam. In this embodiment the condensate pipe has preferably, but not necessarily, a smaller inner cross- section than the inner cross-section of each of said vertically disposed heat transfer pipes. This has a positive effect on the ability to draw, for example to pump, condensate out of the steam heat exchanger arrangement regardless of the height of the vessel. This especially important if condensate is removed via an open top of a high vessel.
In an embodiment at least one of the upper manifold and the lower manifold comprises a plate means, which forms a part of an outer wall structure of the manifold that limits an inner manifold space and which is penetrated by the vertically disposed condensation heat transfer pipes. By forming a part of an outer wall structure of the manifold that limits an inner manifold space of such plate means, it is easier to provide a large number of heat transfer pipes between the upper manifold and the lower manifold. A large number of heat transfer pipes between the upper manifold and the lower manifold leads to a large heat exchanging area.
In an embodiment the steam heat exchanger arrangement comprises a rail structure for releasable suspending the steam heat exchanger arrangement in a vessel space of a vessel from a roof structure of the vessel. A such rail structure makes it unnecessary to fasten the steam heat exchanger arrangement to the walls of the vessel. The rail structure allows moving of parts of the steam heat exchanger arrangement with respect to the rail structure due to thermal expansion. The rail structure allows also removal of the steam heat exchanger arrangement from and inserting of the steam heat exchanger arrangement into the vessel space of the vessel without a need for compete emptying of all content from the vessel space of the vessel. List of figures
In the following the invention will described in more detail by referring to the figures of which
Figure 1 shows a steam heat exchanger arrangement according to an embodiment, Figure 2 shows the steam heat exchanger arrangement shown in figure 1 as seen from one side,
Figure 3 shows a part of the lower end of the steam heat exchanger arrangement shown in figure 1,
Figure 4 shows in partly cut state a part of the lower end of the steam heat exchanger element shown in figure 1,
Figure 5 shows the lower end of the steam heat exchanger shown in figure 1,
Figure 6 shows the upper end of the steam heat exchanger shown in figure 1,
Figure 7 shows the upper end of the steam heat exchanger shown in figure 1,
Figure 8 shows the upper end of the steam heat exchanger shown in figure 1, Figure 9 shows the rail element of the steam heat exchanger element shown in figure 1, and
Figure 10 shows in partly cut view a vessel that is provided with a steam heat exchanger arrangement as shown in figure 1. Detailed description of the invention
The invention relates to a method for thermal control of the content (not shown in the figures) in a vessel space of a vessel 1 such as a hydrometallurgical reactor and to a steam heat exchanger arrangement 2 for thermal control of the content in a vessel space of a vessel 1 such as a hydrometallurgical reactor.
First the method for thermal control of the content in a vessel space 3 of a vessel 1 such as a hydrometallurgical vessel and some embodiments and variants of the method will be described in greater detail.
The method comprises using a steam heat exchanger arrangement 2 comprising vertically disposed condensation heat transfer pipes 4, an upper manifold 5 connected to an upstream of each of the vertically disposed condensation heat transfer pipes 4, a lower manifold 6 connected to a downstream of each of the vertically disposed condensation heat transfer pipes 4, and condensate pipe 7 in fluid communication through an inlet opening 8 with the lower manifold 6 for leading steam or condensate from the lower manifold 6 and wherein the condensate pipe 7 having an outlet opening 9 for leading condensate from the condensate pipe 7.
The method comprises immersing the steam heat exchanger arrangement 2 at least partly into the content in the vessel space 3 of the vessel 1.
The method comprises leading steam to the upper manifold 5 of the steam heat exchanger arrangement 2.
The method comprises distributing steam to the vertically disposed condensation heat transfer pipes 4 from the upper manifold 5.
The method comprises conducting steam in the vertically disposed condensation heat transfer pipes 4 in the direction from the upper manifold 5 towards the lower manifold 6 to exchange thermal energy between steam flowing in the vertically disposed condensation heat transfer pipes 4 and the content in the vessel space 3 of the vessel 1.
The method comprises receiving steam or condensate in the lower manifold 6 from the vertically disposed condensation heat transfer pipes 4.
The method comprises draining steam or condensate from the lower manifold 6 to the condensate pipe 7. The method comprises providing the outlet opening 9 of the condensate pipe 7 with a steam trap 10 for controlling the flow of condensate from the outlet opening 9 of the condensate pipe 7.
The method comprises controlling the flow of condensate from the outlet opening 9 of the condensate pipe 7 by the steam trap 10 to prevent steam from exiting the condensate pipe 7.
An embodiment of the method comprises using a steam heat exchanger arrangement 2, where the lower manifold 6 is in fluid communication with the inlet opening 8 of the condensate pipe 7 through a condensate well 11 that is arranged at a level below the lower manifold 6 and that is in fluid communication with the lower manifold 6 for receiving condensate from the lower manifold 6. This embodiment of the method comprises arranging the inlet opening 8 of the condensate pipe 7 horizontally in the condensate well 11 so that the inlet opening 8 faces downwardly into the condensate well 11. This embodiment of the method may comprise providing the condensate well 11 with a releasable fastened bottom 12. This embodiment of the method may comprise using a condensate pipe 7 having a smaller inner cross-section than the inner cross-section of each of said vertically disposed heat transfer pipes 4.
An embodiment of the method comprises using a steam heat exchanger arrangement 2, where at least one of the upper manifold 5 and the lower manifold 6 comprises a plate means 13, which forms a part of a manifold shell structure 14 of the manifold that limits an inner manifold space and which is penetrated by the vertically disposed condensation heat transfer pipes 4.
An embodiment of the method comprises using a steam heat exchanger arrangement 2 comprising a rail structure 15. This embodiment comprises suspending the steam heat exchanger arrangement 2 releasable in the vessel space 3 of the vessel 1 from a roof structure 17 of the vessel 1 by means of the rail structure 15. This embodiment of the method may comprise providing the rail structure 15 with a baffle means 16 for enhancing mixing of the content in the vessel space 3 of the vessel 1. This embodiment of the method may comprise providing the rail structure 15 being with standing support 19 a for supporting the steam heat exchanger arrangement 2 in the vessel space 3 of the vessel 1 on a bottom structure 18 of the vessel 1, and supporting the steam heat exchanger arrangement 2 releasable in the vessel space 3 of the vessel 1 on a bottom structure 18 of the vessel 1 by means of standing support 19 of the rail structure 15.
The vessel 1 shown in figure 6 comprises an agitator 20 in the vessel space 3 of the vessel 1.
In the following the steam heat exchanger arrangement 2 for thermal control of the content in a vessel space 3 of a vessel 1 such as a hydrometallurgical reactor and some embodiments and variants of the steam heat exchanger arrangement 2 will be described in greater detail.
The steam heat exchanger arrangement 2 comprises vertically disposed condensation heat transfer pipes 4. The steam heat exchanger arrangement 2 comprises an upper manifold 5 connected to an upstream of each of the vertically disposed condensation heat transfer pipes 4.
The steam heat exchanger arrangement 2 comprises a lower manifold 6 connected to a downstream of each of the vertically disposed condensation heat transfer pipes 4.
The steam heat exchanger arrangement 2 comprises a condensate pipe 7 in fluid communication with the lower manifold 6 for leading condensate from the lower manifold 6.
The steam heat exchanger arrangement 2 comprises a steam trap 10 for controlling the flow of condensate from the condensate pipe 7.
In an embodiment of the steam heat exchanger the lower manifold 6 is in fluid communication with the condensate pipe 7 through a condensate well 11, which is arranged at a level below the lower manifold 6, and which is in fluid communication with the lower manifold 6 for receiving condensate from the lower manifold 6. In this embodiment of the steam heat exchanger the lower manifold 6, the condensate pipe 7 has an inlet opening 8 that is horizontally arranged in the condensate well 11 and that faced downwardly into the condensate well 11. In this embodiment of the steam heat exchanger arrangement 2 the condensate well 11 may be provided with a releasable fastened bottom 12. In this embodiment of the steam heat exchanger arrangement 2, the condensate pipe 7 may have a smaller inner cross-section than the inner cross-section of each of said vertically disposed heat transfer pipes 4.
In an embodiment of the steam heat exchanger at least one of the upper manifold 5 and the lower manifold 6 comprising a plate means 13, which forms a part of an outer wall structure of the manifold that limits an inner manifold space and which is penetrated by the vertically disposed condensation heat transfer pipes 4.
In an embodiment of the steam heat exchanger the steam heat exchanger arrangement 2 comprising a rail structure 15 for releasable suspending the steam heat exchanger arrangement 2 in a vessel space 3 of a vessel from a roof structure 17 of the vessel 1. In this embodiment of the steam heat exchanger arrangement 2, the rail structure 15 may be provided with a baffle means 16 for enhancing mixing of the content in the vessel space 3 of the vessel 1. In this embodiment of the steam heat exchanger arrangement 2, the rail structure 15 may be provided with a standing support 19 for supporting the steam heat exchanger arrangement 2 in the vessel space 3 of the vessel 1 on a bottom structure 18 of the vessel 1 by means of standing support 19 of the rail structure 15.
It is apparent to a person skilled in the art that as technology advanced, the basic idea of the invention can be implemented in various ways. The invention and its embodiments are therefore not restricted to the above examples, but they may vary within the scope of the claims.

Claims

Claims
1. A method for thermal control of the content in a vessel space (3) of a vessel (1) such as a hydrometallurgical reactor, wherein the method comprises
using a steam heat exchanger arrangement (2) comprising vertically disposed condensation heat transfer pipes (4), an upper manifold (5) connected to an upstream of each of the vertically disposed condensation heat transfer pipes (4), a lower manifold (6) connected to a downstream of each of the vertically disposed condensation heat transfer pipes (4), and condensate pipe (7) in fluid communication through an inlet opening (8) with the lower manifold
(6) for leading steam or condensate from the lower manifold (6) and wherein the condensate pipe (7) having an outlet opening (9) for leading condensate from the condensate pipe (7),
immersing the steam heat exchanger arrangement (2) at least partly into the content in the vessel space (3) of the vessel (1),
leading steam to the upper manifold (5),
distributing steam to the vertically disposed condensation heat transfer pipes (4) from the upper manifold (5),
conducting steam in the vertically disposed condensation heat transfer pipes (4) in the direction from the upper manifold (5) towards the lower manifold (6) to exchange thermal energy between steam flowing in the vertically disposed condensation heat transfer pipes (4) and the content in the vessel space (3) of the vessel (1),
receiving steam and/or condensate in the lower manifold (6) from the vertically disposed condensation heat transfer pipes (4), and
draining steam or condensate from the lower manifold (6) to the condensate pipe (7) characterized
by providing the outlet opening (9) of the condensate pipe (7) with a steam trap (10) for controlling the flow of condensate from the outlet opening (9) of the condensate pipe (7), and by controlling the flow of condensate from the outlet opening (9) of the condensate pipe
(7) by the steam trap (10) to prevent steam from exiting the condensate pipe (7).
2. The method according to claim 1, characterized
by using a steam heat exchanger arrangement (2), where the lower manifold (6) is in fluid communication with the inlet opening (8) of the condensate pipe (7) through a condensate well (11) that is arranged at a level below the lower manifold (6) and that is in fluid communication with the lower manifold (6) for receiving condensate from the lower manifold (6), and
by arranging the inlet opening (8) of the condensate pipe (7) horizontally in the condensate well (11) so that the inlet opening (8) faces downwardly into the condensate well (11).
3. The method according to claim 2, characterized by providing the condensate well (11) with a releasable fastened bottom (12).
4. The method according to claim 2 or 3, characterized by using a condensate pipe (7) having a smaller inner cross-section than the inner cross-section of each of said vertically disposed heat transfer pipes (4).
5. The method according to any of the claims 1 to 4, characterized in that
by using a steam heat exchanger arrangement (2), where at least one of the upper manifold (5) and the lower manifold (6) comprises a plate means (13), which forms a part of a manifold shell structure (14) of the manifold and which is penetrated by the vertically disposed condensation heat transfer pipes (4).
6. The method according to any of the claims 1 to 5, characterized
by using a steam heat exchanger arrangement (2) comprising a rail structure (15), and by suspending the steam heat exchanger arrangement (2) releasable in the vessel space (3) of the vessel (1) from a roof structure (17) of the vessel (1) by means of the rail structure (15).
7. The method according to claim 6, characterized by providing the rail structure (15) with a baffle means (16) for enhancing mixing of the content in the vessel space (3) of the vessel (1).
8. The method according to claim 6 or 7, characterized
by providing the rail structure (15) with a standing support (19) for supporting the steam heat exchanger arrangement (2) in the vessel space (3) of the vessel (1) on a bottom structure (18) of the vessel (1), and
by supporting the steam heat exchanger arrangement (2) releasable in the vessel space (3) of the vessel (1) on a bottom structure (18) of the vessel (1) by means of standing support (19) of the rail structure (15).
9. A steam heat exchanger arrangement (2) for thermal control of the content in a vessel space (3) of a vessel (1) such as a hydrometallurgical reactor, wherein the steam heat exchanger arrangement (2) comprises
vertically disposed condensation heat transfer pipes (4),
an upper manifold (5) connected to an upstream of each of the vertically disposed condensation heat transfer pipes (4),
a lower manifold (6) connected to a downstream of each of the vertically disposed condensation heat transfer pipes (4), and
a condensate pipe (7) in fluid communication with the lower manifold (6) for leading condensate from the lower manifold (6),
characterized
by a steam trap (10) for controlling the flow of condensate from the condensate pipe (7).
10. The steam heat exchanger arrangement (2) according to claim 9, characterized
by the lower manifold (6) being in fluid communication with the condensate pipe (7) through a condensate well (11),
by the condensate well (11) being arranged at a level below the lower manifold (6), by the condensate well (11) being in fluid communication with the lower manifold (6) for receiving condensate from the lower manifold (6), and
by the condensate pipe (7) having an inlet opening (8) that is horizontally arranged in the condensate well (11) and that faced downwardly into the condensate well (11) .
11. The steam heat exchanger arrangement (2) according to claim 10, characterized by the condensate well (11) being provided with a releasable fastened bottom (12).
12. The steam heat exchanger arrangement (2) according to claim 10 or 11, characterized by the condensate pipe (7) having a smaller inner cross-section than the inner cross-section of each of said vertically disposed heat transfer pipes (4).
13. The steam heat exchanger arrangement (2) according to any of the claims 9 to 12, characterized
By at least one of the upper manifold (5) and the lower manifold (6) comprising a plate means (13), which forms a part of an outer wall structure of the manifold and which is penetrated by the vertically disposed condensation heat transfer pipes (4).
14. The steam heat exchanger arrangement (2) according to any of the claims 9 to 13, characterized by the steam heat exchanger arrangement (2) comprising a rail structure (15) for releasable suspending the steam heat exchanger arrangement (2) in a vessel space (3) of a vessel (1) from a roof structure (17) of the vessel (1).
15. The steam heat exchanger arrangement (2) according to claim 14, characterized by the rail structure (15) being provided with a baffle means (16) for enhancing mixing of the content in the vessel space (3) of the vessel (1).
16. The steam heat exchanger arrangement (2) according to claim 14 or 15, characterized by the rail structure (15) being provided with a standing support for supporting the steam heat exchanger arrangement (2) in the vessel space (3) of the vessel (1) on a bottom structure (18) of the vessel (1) by means of standing support (19) of the rail structure (15).
PCT/FI2014/050934 2013-12-02 2014-12-01 Method and steam heat exchanger arrangement for thermal control of the content in a vessel space of a vessel WO2015082767A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20136206A FI125779B (en) 2013-12-02 2013-12-02 METHOD AND STEAM HEAT EXCHANGER SYSTEM FOR MANAGING TEMPERATURE OF CONTENT IN CONSTANT STATE
FI20136206 2013-12-02

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WO2015082767A1 true WO2015082767A1 (en) 2015-06-11

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191307525A (en) * 1913-03-31 1913-11-06 William Oberste Improvements in or relating to Surface Condensers and the like.
GB354689A (en) * 1929-02-16 1931-08-13 Reichsverband Der Automobilind Improvements in the method of and apparatus for condensation
GB2017894A (en) * 1978-03-27 1979-10-10 Hudson Products Corp Surface condenser
US4903491A (en) * 1988-06-13 1990-02-27 Larinoff Michael W Air-cooled vacuum steam condenser
US20100218933A1 (en) * 2009-02-27 2010-09-02 Advanced Steam Technology Heat Exchange System and Method
DE102010023836A1 (en) * 2010-06-11 2011-12-15 Viktor Holstein Vapor cooling system for condensing water vapor that is utilized in industrial process for heating purposes, has collecting pot containing condensate that is continuously formed in unpressurized storage through condensate return flow pipe
US8443870B2 (en) 2005-11-17 2013-05-21 Masaaki Hanamura Steam heat exchanger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191307525A (en) * 1913-03-31 1913-11-06 William Oberste Improvements in or relating to Surface Condensers and the like.
GB354689A (en) * 1929-02-16 1931-08-13 Reichsverband Der Automobilind Improvements in the method of and apparatus for condensation
GB2017894A (en) * 1978-03-27 1979-10-10 Hudson Products Corp Surface condenser
US4903491A (en) * 1988-06-13 1990-02-27 Larinoff Michael W Air-cooled vacuum steam condenser
US8443870B2 (en) 2005-11-17 2013-05-21 Masaaki Hanamura Steam heat exchanger
US20100218933A1 (en) * 2009-02-27 2010-09-02 Advanced Steam Technology Heat Exchange System and Method
DE102010023836A1 (en) * 2010-06-11 2011-12-15 Viktor Holstein Vapor cooling system for condensing water vapor that is utilized in industrial process for heating purposes, has collecting pot containing condensate that is continuously formed in unpressurized storage through condensate return flow pipe

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FI20136206A (en) 2015-06-03

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