EP2848884B1 - Procédé d'inertie d'un récipient, en particulier sous la forme d'une bobine disposée dans un four - Google Patents

Procédé d'inertie d'un récipient, en particulier sous la forme d'une bobine disposée dans un four Download PDF

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Publication number
EP2848884B1
EP2848884B1 EP13004441.5A EP13004441A EP2848884B1 EP 2848884 B1 EP2848884 B1 EP 2848884B1 EP 13004441 A EP13004441 A EP 13004441A EP 2848884 B1 EP2848884 B1 EP 2848884B1
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EP
European Patent Office
Prior art keywords
valve
conduit
vessel
medium
pressure
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.)
Not-in-force
Application number
EP13004441.5A
Other languages
German (de)
English (en)
Other versions
EP2848884A1 (fr
Inventor
Ambrogio Gusberti
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.)
Linde GmbH
Original Assignee
Linde GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Priority to PL13004441T priority Critical patent/PL2848884T3/pl
Priority to PT130044415T priority patent/PT2848884T/pt
Priority to ES13004441.5T priority patent/ES2599810T3/es
Priority to EP13004441.5A priority patent/EP2848884B1/fr
Priority to HUE13004441A priority patent/HUE030864T2/en
Priority to DK13004441.5T priority patent/DK2848884T3/en
Publication of EP2848884A1 publication Critical patent/EP2848884A1/fr
Application granted granted Critical
Publication of EP2848884B1 publication Critical patent/EP2848884B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/18—Detecting fluid leaks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2900/00—Special features of, or arrangements for controlling combustion
    • F23N2900/05001—Measuring CO content in flue gas
    • 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
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • F27D2007/063—Special atmospheres, e.g. high pressure atmospheres

Definitions

  • the invention relates to a method for inertization according to claim 1.
  • a system for inertization of a vessel is also discussed.
  • Heat is used in the process industry (from oil and gas to fine chemistry) to promote reactions, separation processes or to handle products. Heat can be transferred directly by burning a fuel in a fluid heater and transferring the energy from the combustion to the product contained in a coil or indirectly by heating a media (e.g. oil, water, or steam) and then transferring the energy to the product via a heat exchanger.
  • a media e.g. oil, water, or steam
  • the present invention is concerned with fluid heaters.
  • Fired heaters are defined on the API Std. 560 4th ed. as equipments where the "heat liberated by the combustion of fuels is transferred to fluids (other than water) contained in vessels, e.g. in the form of tubular coils, within an internally insulated enclosure". Excluding water, the fluid is normally flammable. Then, in case the coil breaks, hot hydrocarbons flow into the firing box of the furnace and start burning. The double action of heat released by the uncontrolled combustion on the leak and the internal pressure of the
  • the time lag between steps 2 and 3 depends on the system hold-up.
  • the leak e.g. rupture
  • the uncontrolled fire can extend to other sections of the furnace like the convection section and the flue gas duct or the stack.
  • the uncontrolled fire overheats the structures surrounding the unit, which then potentially collapses.
  • the problem underlying the present invention is to provide for a method and a system, which allow for reduction of said time lag or hold-up.
  • the method according to the invention relates to inertization of a vessel, said vessel being a coil arranged in a furnace, said coil having an inlet and an outlet, wherein said inlet is connected to a first conduit and said outlet is connected to a second conduit, wherein a fluid medium is passed through the coil for heating said fluid medium therein, wherein particularly a fuel is combusted in said furnace for heating of said fluid medium flowing through said coil, the vessel having an inlet and an outlet, wherein said inlet is connected to a first conduit and said outlet is connected to a second conduit for passage of a fluid medium through said vessel via said conduits, the method further comprises the steps of: closing a first valve,e.g.
  • a pneumatical failure close, failure open, or failure lock valve (wherein regarding a failure lock valve the valve does not move in case of air failure), of the first conduit upstream of said inlet for blocking passage of said fluid medium into the vessel, and injecting an inert medium, particularly an inert gas, particularly comprising nitrogen, into the first conduit downstream of said first valve as well as into the second conduit downstream of said outlet for inertization of said vessel, wherein said inert medium is injected into said first and second conduit at a pressure being equal to the pressure of said fluid medium in the vessel or at a pressure that differs from said pressure of the fluid medium in the vessel by less than 2 bar, particularly less than 1 bar, particularly less than 0.5 bar.
  • the pressure of the inert medium e.g.
  • the inert gas essentially equals the pressure of the fluid medium, but may be a bit lower or higher.
  • the inert medium e.g. nitrogen or other inert gas
  • the broken vessel e.g. coil
  • the aim is to completely displace any liquid entrapped in the elbows without further damaging the vessel.
  • the amount of inert medium e.g. nitrogen or other inert gas
  • the amount of inert medium or inert gas injected into the vessel is preferably equal to four or five times the vessel volume at the actual conditions (injection pressure and ambient temperature).
  • the invention thus advantageously reduces the hold-up of said medium.
  • the inert medium (e.g. nitrogen) injection at said pressure does not need a prior reduction of the operating pressure so that displacement of the residual fluid medium (e.g. hydrocarbons) is possible right from the start leading to a quicker inertization of the environment.
  • a particular advantage of the present invention is that the reduced hydrocarbons hold-up decreases the risk of a "domino effect" extending damages to the surrounding components. This is particularly achieved by storing said inert medium at an adequate pressure level that allows for injection into the system before the pressure is lower than that of the (e.g. nitrogen) network employed for inertization, particularly.
  • inert medium e.g. inert gas
  • first pressure tank is connected to the first conduit via a second valve, which is opened for injecting said inert gas into the first conduit.
  • inert medium e.g. inert gas
  • inert medium e.g. inert gas
  • the second pressure tank is connected to the second conduit via a third valve, which is opened for injecting said inert gas into the second conduit.
  • the second conduit comprises a check valve downstream of the point where said inert gas is injected into the second conduit.
  • the first, second, and/or third valve is designed as a pneumatical valve, i.e., a valve which is designed to be actuated pneumatically, e.g. by means of instrument air or nitrogen.
  • the first valve preferably is a failure close valve which opens upon actuation (the first valve may also be a failure open or failure lock valve)
  • the second and/or third valve preferably is a failure open valve closing upon actuation.
  • said check valve and the first valve may be interchanged.
  • said check valve may be substituted by an (e.g. pneumatical) fourth valve (e.g. a failure close, failure open or failure lock valve, see also above).
  • actuation pressure is provided for these valves by means of two three-way solenoid valves, which are preferably configured such that said (first, second, third and/or fourth) valve is opened/closed or activated (in case of a failure lock valve) when at least one of the solenoids can be electrically activated.
  • said (first, second, third and/or fourth) valve is opened/closed or activated (in case of a failure lock valve) when at least one of the solenoids can be electrically activated.
  • said second and third valves are opened at the same time.
  • the first and eventually the fourth valve, when actuated, are closed together before the second and the third valve are opened.
  • said fluid medium is combustible.
  • said fluid medium comprises one or several combustible hydrocarbons.
  • said vessel is a coil that is arranged in a furnace, particularly in a firing box of the latter, in which a fuel is combusted in the presence of an oxidant (e.g. air or oxygen), so that said fluid medium which is passed through the coil is heated.
  • an oxidant e.g. air or oxygen
  • the steps of closing said first valve and injecting said inert medium (e.g. inert gas) into the first and second conduit are conducted when a leak (e.g. a rupture) is detected in said coil.
  • Said leak may for instance be detected by means of a carbon monoxide sensor, which may be for instance arranged in a stack of said furnace through which flue gas generated upon combustion is drawn off the furnace.
  • the fuel to the system is not completely stopped when a fire is detected, since in case the flammable fluid medium is not burned in the firing box an explosive atmosphere may be created.
  • the system is actuated manually, but can also be activated automatically based on the available information, e.g. CO content in the flue gas, furnace operating pressure or other suitable signals.
  • said inert medium e.g. inert gas
  • said leak e.g. rupture
  • a first pressure tank for storing an inert medium e.g. inert gas
  • first pressure tank is connected to said first conduit via a second valve, as well as a second pressure tank for storing an inert medium (e.g.
  • inert gas which second pressure tank is connected to said second conduit via a third valve
  • the system is configured to inject said inert medium, particularly inert gas, particularly comprising nitrogen, out of the pressure tanks into the vessel via the first and second conduit for inertization of the vessel, particularly when a leak of said vessel is detected and/or the system is activated by an operator, particularly so as to push out said fluid medium out of vessel through said leak by means of the injected inert gas.
  • said vessel is a tubular coil arranged in a furnace of said system, particularly in a firing box of said furnace, wherein the system is configured for passing said fluid medium through said coil for transferring heat to said fluid medium, wherein particularly the furnace is configured to combust a fuel in said furnace (particularly in said firing box) for heating of said fluid medium flowing through said coil.
  • the second conduit preferably comprises a check or an automatic ON-OFF fourth valve (see above) downstream of the point where said inert gas flows into the second conduit.
  • the position of the first valve and the check valve may also be interchanged (see above).
  • the first, the second, the third and/or the fourth valve is preferably designed as a pneumatical valve, which is actuated pneumatically, e.g. by means of instrument air or nitrogen. While the first and eventually the fourth valve are preferably failure close valves which open upon actuation (the first and/or fourth valve may also be a failure open or a failure lock valve), the second and the third valve are preferably failure open valves closing upon actuation. As indicated above, actuation of the system is preferably conducted by an (e.g. plant) operator of the system once a leak of the vessel/coil is detected. The valves will be interlocked in order to open/close the valves in the right sequence.
  • an (e.g. plant) operator of the system once a leak of the vessel/coil is detected. The valves will be interlocked in order to open/close the valves in the right sequence.
  • actuation pressure is provided for these valves by means of two three-way solenoid valves, which are configured such that said first, second third and/or fourth valve is opened/closed or activated when at least one of the solenoids can be activated by means of electric power.
  • first, second and/or third valve is increased since either one of the two solenoids is allowed to fail, respectively.
  • Fig. 1 shows in conjunction with Figs. 2 and 3 a system 1 for rendering a vessel in the form of a tubular coil 40 inert that is arranged in a firing box of a furnace 2, in which a fuel F is combusted in the presence of an oxidant O like air for instance.
  • the heat produced upon combustion of said fuel F is transferred to a combustible fluid medium M comprising combustible hydrocarbons flowing through said tubular coil 40 for heating of said fluid medium M.
  • Said coil 40 comprises an inlet 41 connected to a first conduit 22 as well as an outlet 42 connected to a second conduit 32 so that fluid medium M can be fed into the coil 40 via the first conduit 22 and drawn of the coil 40 via the second conduit 32.
  • the first conduit 22 preferably comprises a first valve 10 for reducing or stopping flow of fluid medium M into the coil 40.
  • a check valve 50 is provided in the second conduit 32.
  • the system 1 thus comprises a first pressure tank 21 being connected via a second valve 20 to the first conduit 22 downstream of the first valve 10 as well as a second pressure tank 31 being connected to the second conduit 32 upstream of said check valve 50.
  • the pressure tanks 21, 31 are designed for storing an inert medium, particularly an inert gas G, here e.g. nitrogen, and allow for injecting the latter at a pressure level into the first and second conduit 22, 32 that is essentially equal to the pressure level of the fluid medium M in the coil 40.
  • G inert gas
  • the furnace 2 may comprise a CO sensor 4 provided in a stack 3 of the furnace 2 via which stack 3 flue gas generated in the furnace 2 due to combustion of said fuel F is drawn off the furnace 2.
  • said sensor 4 is designed to detect an increase in CO generation due to combustion of fluid medium M that is discharged through rupture R into the furnace 2.
  • an operator may trigger injection of nitrogen G into the coil 40 manually.
  • the system 1 will then automatically close the first valve 10 for blocking passage of fluid medium M into the coil 40, reduce flow of fuel F and/or oxidant O into the furnace 2 and open the second and third valve 20, 30 so that nitrogen G flows via the first and second conduit 22, 32 into the coil 40 and pushes out residual fluid medium M through said rupture R thus rendering the coil 40 inert.
  • first valve 10 and the check valve 50 may also be interchanged.
  • a fourth (e.g. pneumatical) valve 10' instead of a check valve 50, also a fourth (e.g. pneumatical) valve 10' may be used.
  • the first 10 and the fourth valve 10' can be (e.g. pneumatical) failure close, failure open or failure lock valves.
  • the second and the third valves 20, 30 are preferably (e.g. pneumatical) failure open valves.
  • the first valve 10 is a pneumatically actuated failure close valve, which is actuated by means of a first and a second solenoid three-way valve 101, 102, which solenoid valves 101, 102 are configured such that when the solenoids S of the first and the second solenoid valve 101, 102 are in a resting position, a first flow path103 is pressurized with a gas (e.g. instrument gas or nitrogen), which however is not in fluid communication with an actuating means 106 for closing the first valve 10.
  • a gas e.g. instrument gas or nitrogen
  • a second flow path 104 is pressurized with said gas which pressurizes said actuating means 106 which then closes the first valve.
  • the second and the third valve as shown in Fig. 3 are operated accordingly, i.e., when the solenoids S of the first and the second solenoid valve 201, 202 are in a resting position, a first flow path 203 is pressurized, which is not in fluid communication with the actuating means 206 for opening the second/third valve 20, 30.
  • the second flow path 204 pressurizes said actuating means 206 with gas, which actuating means 206 then closes the second/third valve 20, 30.
  • the respective second or third flow path 204, 205 pressurizes the actuating means 206 with said gas, which actuating means 206 then closes the second/third valve 20, 30.
  • actuating means 206 then closes the second/third valve 20, 30.
  • the method according to the invention particularly achieves the advantageous technical effect according to which the fluid medium (e.g. hydrocarbons) hold-up in the coil 40 can be lowered, thus reducing the risk of a "domino effect" extending the damages to the surrounding.
  • nitrogen G is stored at an adequate pressure for injection into the system 1 before the pressure is lower than the nitrogen network.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Claims (13)

  1. Procédé d'inertisation d'un récipient, ledit récipient étant une bobine disposée dans un four (2), ledit récipient (40) comprenant une entrée (41) et une sortie (42), dans lequel ladite entrée (41) est connectée à un premier conduit (22) et ladite sortie (42) est connectée à un second conduit (32), dans lequel on fait passer un milieu fluide (M) à travers la bobine (40) dans le but de chauffer ledit milieu fluide (40) dans celle-ci, comprenant les étapes suivantes:
    - fermer une première soupape (10) du premier conduit (22) en amont de ladite entrée (41) afin de bloquer le passage dudit fluide (M) dans le récipient (40),
    - injecter un milieu inerte (G) dans le premier conduit (22) en aval de ladite première soupape (10) ainsi que dans ledit second conduit (32) en aval de ladite sortie (42) afin de rendre inerte ledit récipient (40), et
    - dans lequel ledit milieu inerte (G) est injecté dans lesdits premier et second conduits (22, 32) à une pression qui est égale à la pression dudit milieu fluide (M) dans le récipient (40) ou à une pression qui diffère de ladite pression du milieu fluide (M) dans le récipient (40) de moins de 2 bars.
  2. Procédé selon la revendication 1, caractérisé en ce que le milieu inerte (G) à injecter dans ledit premier conduit (22) est stocké dans un premier réservoir de pression (21) avant l'injection, dans lequel le premier réservoir de pression (21) est connecté au premier conduit (22) par l'intermédiaire d'une deuxième soupape (20), en particulier sous la forme d'une soupape pneumatique, dans lequel la deuxième soupape (20) est ouverte pour injecter ledit milieu inerte (G) dans le premier conduit (22).
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce que le milieu inerte (G) à injecter dans ledit second conduit (32) est stocké dans un deuxième réservoir de pression (31) avant l'injection, dans lequel le deuxième réservoir de pression (32) est connecté au second conduit (32) par l'intermédiaire d'une troisième soupape (30), en particulier sous la forme d'une soupape pneumatique, dans lequel la troisième soupape (30) est ouverte pour injecter ledit milieu inerte (G) dans le second conduit (32).
  4. Procédé selon les revendications 2 et 3, caractérisé en ce que lesdites deuxième et troisième soupapes (20, 30) sont ouvertes en même temps.
  5. Procédé selon l'une des revendications 2 à 4, caractérisé en ce que la première soupape (10) est fermée avant l'ouverture de la deuxième soupape (20) et/ou de la troisième soupape (30), dans lequel en particulier aussi une quatrième soupape (10') du second conduit (32), ladite quatrième soupape (10) étant disposée en aval de ladite sortie (42) et en aval du point où le milieu inerte (G) est injecté dans le second conduit (32), est fermée avant l'ouverture de la deuxième soupape (20) et/ou de la troisième soupape (30).
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que ledit milieu fluide (M) est combustible.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que ledit milieu fluide (M) comprend un hydrocarbure.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que les étapes de fermeture de ladite première soupape (10), et en particulier de ladite quatrième soupape (10'), et d'injection dudit milieu inerte (G) sont exécutées lorsqu'une fuite (R) est détectée dans ledit récipient (40).
  9. Procédé selon la revendication 8, caractérisé en ce que ledit milieu inerte (G) est injecté dans les premier et second conduits (22, 32) de manière à pousser ledit milieu fluide (M) hors de la bobine (40) par l'intermédiaire de ladite fuite (R).
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'un combustible (F) est brûlé dans ledit four (2) afin de chauffer ledit milieu fluide (M) qui s'écoule à travers ladite bobine (40).
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que ledit milieu inerte (G) est un gaz inerte, en particulier l'azote.
  12. Procédé selon l'une des revendications précédentes, caractérisé en ce que ledit milieu inerte (G) est injecté dans lesdits premier et second conduits (22, 32) à une pression qui diffère de ladite pression du milieu fluide (M) dans le récipient (40) de moins de 1 bar.
  13. Procédé selon l'une des revendications précédentes, caractérisé en ce que ledit milieu inerte (G) est injecté dans lesdits premier et second conduits (22, 32) à une pression qui diffère de ladite pression du milieu fluide (M) dans le récipient (40) de moins de 0,5 bar.
EP13004441.5A 2013-09-12 2013-09-12 Procédé d'inertie d'un récipient, en particulier sous la forme d'une bobine disposée dans un four Not-in-force EP2848884B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PL13004441T PL2848884T3 (pl) 2013-09-12 2013-09-12 Sposób inertyzacji zbiornika, zwłaszcza w formie cewki umieszczonej w piecu
PT130044415T PT2848884T (pt) 2013-09-12 2013-09-12 Método e sistema para inertização de um reservatório, particularmente na forma de uma bobina disposta numa fornalha
ES13004441.5T ES2599810T3 (es) 2013-09-12 2013-09-12 Método para hacer inerte un recipiente, en particular en forma de una bobina dispuesta en un horno
EP13004441.5A EP2848884B1 (fr) 2013-09-12 2013-09-12 Procédé d'inertie d'un récipient, en particulier sous la forme d'une bobine disposée dans un four
HUE13004441A HUE030864T2 (en) 2013-09-12 2013-09-12 Procedure for filling a pressure vessel, in particular a pipe spiral arranged in an oven space with an inert medium
DK13004441.5T DK2848884T3 (en) 2013-09-12 2013-09-12 Method for inertizing a container, in particular in the form of a coil disposed in an oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13004441.5A EP2848884B1 (fr) 2013-09-12 2013-09-12 Procédé d'inertie d'un récipient, en particulier sous la forme d'une bobine disposée dans un four

Publications (2)

Publication Number Publication Date
EP2848884A1 EP2848884A1 (fr) 2015-03-18
EP2848884B1 true EP2848884B1 (fr) 2016-08-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13004441.5A Not-in-force EP2848884B1 (fr) 2013-09-12 2013-09-12 Procédé d'inertie d'un récipient, en particulier sous la forme d'une bobine disposée dans un four

Country Status (6)

Country Link
EP (1) EP2848884B1 (fr)
DK (1) DK2848884T3 (fr)
ES (1) ES2599810T3 (fr)
HU (1) HUE030864T2 (fr)
PL (1) PL2848884T3 (fr)
PT (1) PT2848884T (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727483A (ja) * 1993-07-16 1995-01-27 Chugai Ro Co Ltd 管コイル用ローラハース型熱処理炉
JPH07173523A (ja) * 1993-12-16 1995-07-11 Furukawa Electric Co Ltd:The パイプコイルの熱処理用トレー

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RO77766A2 (fr) * 1979-10-12 1981-12-25 Institutul De Cercetari Si Proiectari Pentru Petrol Si Gaze,Ro Procede et dispositif pour l'alimentation ou l'interruption de l'alimentation avec combustible d'un rechauffeur de huile
US7536274B2 (en) * 2004-05-28 2009-05-19 Fisher-Rosemount Systems, Inc. System and method for detecting an abnormal situation associated with a heater
US9157682B2 (en) * 2011-02-10 2015-10-13 Linde Aktiengesellschaft Furnace atmosphere generator
FR2973862B1 (fr) * 2011-04-06 2013-03-29 F M I Process Sa Four de cremation comprenant un dispositif de regulation de la combustion et installation de cremation comprenant un tel four
AU2012278907B2 (en) * 2011-07-01 2014-09-11 Anaeco Limited Inerting method in digestion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727483A (ja) * 1993-07-16 1995-01-27 Chugai Ro Co Ltd 管コイル用ローラハース型熱処理炉
JPH07173523A (ja) * 1993-12-16 1995-07-11 Furukawa Electric Co Ltd:The パイプコイルの熱処理用トレー

Also Published As

Publication number Publication date
HUE030864T2 (en) 2017-06-28
DK2848884T3 (en) 2016-11-28
PT2848884T (pt) 2016-09-13
ES2599810T3 (es) 2017-02-03
EP2848884A1 (fr) 2015-03-18
PL2848884T3 (pl) 2017-08-31

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