EP1114856A1 - Process for the elimination of mercury and arsenicum from hydrocarbon destillates - Google Patents

Process for the elimination of mercury and arsenicum from hydrocarbon destillates Download PDF

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EP1114856A1
EP1114856A1 EP00403581A EP00403581A EP1114856A1 EP 1114856 A1 EP1114856 A1 EP 1114856A1 EP 00403581 A EP00403581 A EP 00403581A EP 00403581 A EP00403581 A EP 00403581A EP 1114856 A1 EP1114856 A1 EP 1114856A1
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Prior art keywords
mercury
mass
distillation
arsenic
cuts
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German (de)
French (fr)
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EP1114856B1 (en
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Blaise Didillon
Carine Petit-Clair
Laurent Savary
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IFP Energies Nouvelles IFPEN
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Classifications

    • 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
    • C10G25/00—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents
    • 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
    • C10G67/00—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only
    • C10G67/02—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only plural serial stages only
    • C10G67/06—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only plural serial stages only including a sorption process as the refining step in the absence of hydrogen
    • 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
    • C10G65/00—Treatment of hydrocarbon oils by two or more hydrotreatment processes only
    • C10G65/02—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only
    • C10G65/04—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps
    • 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
    • C10G67/00—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only

Definitions

  • the invention relates to a method for removing mercury and possibly arsenic. of a hydrocarbon feed, comprising on the one hand a stage of distillation of the charge and on the other hand (a) at least one unit of mercury capture carried out in two stages (a catalytic stage of decomposition and a stage of adsorption of mercury) carried out on at least one of the distillation cuts and (b) at least one gas or liquid demercurization unit performed on at least one of the cuts.
  • liquid condensates by-products of gas production
  • some crude oils may contain many metallic compounds in the form of traces and often in the form of organometallic complexes. These compounds metallic are very often poisons of the catalysts used during transformation of these cuts into commercial products.
  • Mercury is particularly toxic for the activity of precious metals and moreover is a powerful corrosive to aluminum parts, seals and welds.
  • US patent 4,911,825 of the applicant clearly shows the advantage to capture mercury and possibly arsenic in a process by two step.
  • the first step is to contact the load in the presence of hydrogen with a catalyst containing at least one metal from the group consisting of nickel, cobalt, iron and palladium.
  • Mercury is not (or very little) captured by the catalyst but it is activated on this catalyst so as to be captured, in the second stage, by a mass containing sulfur or sulfur-containing compounds.
  • patent FR 9214224 of the applicant describes a process in two stages as described above but with a stage of distillation of the charge after the first step, the metallic mercury from the first step is thus divided into different sections, and enriched the light fractions which are then treated with an adsorption mass of metallic mercury, as described above.
  • patent JP103377 describes a process comprising a first step of heat treatment of the charge at a temperature above 200 ° C. to decompose all the mercury species present in the charge into metallic mercury, which can then be adsorbed on a sulfide metallic.
  • US Pat. No. 4,094,777 describes a process which makes it possible, using an adsorbent mass consisting of a metal sulfide, to capture mercury in metallic form, in the gas or liquid phase.
  • the present invention makes it possible to implement and in combination the technologies previous. Instead of directly treating the load by either method cited above, it has been discovered that by previously distilling the charge in view to obtain various cuts, the mercury (and possibly arsenic) was distributed differently in these cuts. Generally speaking, metallic mercury is more concentrated in the lighter cut (s), the compounds of mercury (organometallic in particular) rather concentrated in the heaviest cut (s), while sludge is found essentially in the heaviest cut.
  • the object of the invention therefore relates to a first stage of charge distillation treated, at temperatures between the initial point and the end point of the load in question. These temperatures are therefore between 20 ° C and 600 ° C.
  • the object is not not here, as in patent JP103377 to decompose the compounds organomercuric in metallic mercury, but to carry out a distillation in several cuts, which allows however to decompose a good part.
  • the prior splitting of the above charges to be demercurized makes it possible to concentrate a large part of the metallic mercury in the lightest cuts.
  • an increase in the mercury concentration was observed in the light cuts obtained after the fractionation stage, mercury obtained in particular by decomposition of organometallic compounds of mercury or by decomposition thermal of sludges in which mercury is present. It was thus observed a drop in the mercury concentration in the heaviest cuts, for the benefit of the lightest cuts, which are enriched in mercury.
  • this distillation stage has the advantage of concentrating in the part the heavier of the distillate, the suspended particles called sludges and formed of solid mineral compounds (silica, etc.) and / or heavy hydrocarbons, in the form condensed, in which the mercury that was present in metallic form or organometallic has been decomposed under the effect of temperature.
  • the distilled charge is a condensate containing mercury and arsenic contents of 500 and 200 ppb respectively and a sludge content of 2000 ppm (containing from 1 to 5% by weight of mercury).
  • the charge is distilled in five sections and the distributions of mercury and arsenic are presented on the following two graphs:
  • the sludges present in the load and which additionally contain of the mercury is found after distillation in the heaviest cut (> 170 ° C according to example) and are also completely demercurized.

Abstract

Removal of mercury (Hg) and optionally arsenic (As) from a hydrocarbon feed involves distilling the feed to produce one or more light fractions and one or more heavy fractions; contacting the heavy fraction(s) with hydrogen and a catalyst; passing the effluent over an adsorbent capable of capturing Hg and optionally As; and passing at least one of the light fractions over an adsorbent capable of capturing Hg and optionally As.

Description

L'invention concerne un procédé d'élimination de mercure et éventuellement d'arsenic d'une charge hydrocarbonée, comportant d'une part une étape de distillation de la charge et d'autre part (a) au moins une unité de captation de mercure effectuée en deux étapes (une étape catalytique de décomposition et une étape d'adsorption de mercure) effectuée sur au moins une des coupes de distillation et (b) au moins une unité de démercurisation en phase gaz ou liquide effectuée sur au moins une des coupes.The invention relates to a method for removing mercury and possibly arsenic. of a hydrocarbon feed, comprising on the one hand a stage of distillation of the charge and on the other hand (a) at least one unit of mercury capture carried out in two stages (a catalytic stage of decomposition and a stage of adsorption of mercury) carried out on at least one of the distillation cuts and (b) at least one gas or liquid demercurization unit performed on at least one of the cuts.

Il est connu que les condensats liquides (sous-produits de la production du gaz) et certains pétroles bruts peuvent contenir de nombreux composés métalliques à l'état de traces et souvent sous forme de complexes organométalliques. Ces composés métalliques sont très souvent des poisons des catalyseurs utilisés lors des transformations de ces coupes en produits commerciaux. Le mercure est particulièrement toxique pour l'activité des métaux précieux et de plus est un puissant corrosif vis-à-vis des pièces en aluminium, des joints et des soudures.It is known that liquid condensates (by-products of gas production) and some crude oils may contain many metallic compounds in the form of traces and often in the form of organometallic complexes. These compounds metallic are very often poisons of the catalysts used during transformation of these cuts into commercial products. Mercury is particularly toxic for the activity of precious metals and moreover is a powerful corrosive to aluminum parts, seals and welds.

Il est donc avantageux d'épurer les charges destinées à être envoyées dans des procédés de transformation de condensats ou de bruts pour éviter un entraínement de mercure et éventuellement d'arsenic. L'épuration de la charge en amont des procédés de traitement permet de protéger l'ensemble de l'installation.It is therefore advantageous to purify the charges intended to be sent to condensate or crude transformation processes to avoid entrainment of mercury and possibly arsenic. Purification of the load upstream of the processes to protect the entire installation.

La société demanderesse avait préalablement proposé un procédé d'élimination du mercure d'hydrocarbures servant comme charges de divers procédés de traitement. Ainsi, le brevet US 4,911,825 de la demanderesse montre clairement l'avantage d'effectuer une captation de mercure et éventuellement d'arsenic dans un procédé en deux étapes. La première étape consiste à mettre en contact la charge en présence d'hydrogène avec un catalyseur renfermant au moins un métal du groupe constitué par le nickel, le cobalt, le fer et le palladium. Le mercure n'est pas (ou très peu) capté par le catalyseur mais il est activé sur ce catalyseur de façon à être capté, dans la deuxième étape, par une masse renfermant du soufre ou des composés soufrés.The applicant company had previously proposed a process for eliminating hydrocarbon mercury serving as feedstock for various treatment processes. Thus, US patent 4,911,825 of the applicant clearly shows the advantage to capture mercury and possibly arsenic in a process by two step. The first step is to contact the load in the presence of hydrogen with a catalyst containing at least one metal from the group consisting of nickel, cobalt, iron and palladium. Mercury is not (or very little) captured by the catalyst but it is activated on this catalyst so as to be captured, in the second stage, by a mass containing sulfur or sulfur-containing compounds.

Par exemple, encore, le brevet FR 9214224 de la demanderesse décrit un procédé en deux étapes comme décrit précédemment mais avec une étape de distillation de la charge après la première étape, le mercure métallique issu de la première étape est ainsi réparti en différentes coupes, et enrichi les fractions légères qui sont ensuite traitées par une masse d'adsorption du mercure métallique, comme décrit ci-dessus.For example, again, patent FR 9214224 of the applicant describes a process in two stages as described above but with a stage of distillation of the charge after the first step, the metallic mercury from the first step is thus divided into different sections, and enriched the light fractions which are then treated with an adsorption mass of metallic mercury, as described above.

Par exemple, le brevet JP103377 décrit un procédé comprenant une première étape de traitement thermique de la charge à une température supérieure à 200°C pour décomposer toutes les espèces du mercure présentes dans la charge en mercure métallique, qui peut ensuite être adsorbé sur un sulfure métallique.
Le brevet US4094777 de la demanderesse décrit un procédé permettant, à l'aide d'une masse adsorbante constituée d'un sulfure métallique, la captation du mercure sous forme métallique, en phase gaz ou liquide.For example, patent JP103377 describes a process comprising a first step of heat treatment of the charge at a temperature above 200 ° C. to decompose all the mercury species present in the charge into metallic mercury, which can then be adsorbed on a sulfide metallic.
US Pat. No. 4,094,777 describes a process which makes it possible, using an adsorbent mass consisting of a metal sulfide, to capture mercury in metallic form, in the gas or liquid phase.

La présente invention permet de mettre en oeuvre et en combinaison les technologies précédentes. Au lieu de traiter directement la charge par l'une ou l'autre des méthodes citées ci-dessus, on a découvert qu'en distillant préalablement la charge en vu d'obtenir diverses coupes, le mercure (et éventuellement l'arsenic) se répartissait différemment dans ces coupes. D'une façon générale, le mercure métallique est davantage concentré dans la ou les coupe(s) les plus légère(s), les composés du mercure (organométalliques notamment) se concentraient plutôt dans la ou les coupe(s) les plus lourde(s), alors que les boues (ou sludges) se retrouvent essentiellement dans la coupe la plus lourde.The present invention makes it possible to implement and in combination the technologies previous. Instead of directly treating the load by either method cited above, it has been discovered that by previously distilling the charge in view to obtain various cuts, the mercury (and possibly arsenic) was distributed differently in these cuts. Generally speaking, metallic mercury is more concentrated in the lighter cut (s), the compounds of mercury (organometallic in particular) rather concentrated in the heaviest cut (s), while sludge is found essentially in the heaviest cut.

L'objet de l'invention concerne donc une première étape de distillation de la charge traitée, à des températures comprises entre le point initial et le point final de la charge en question. Ces températures sont donc comprises entre 20°C et 600°C. L'objet n'est pas ici, comme dans le brevet JP103377 de décomposer les composés organomercuriques en mercure métallique, mais d'effectuer une distillation en plusieurs coupes, ce qui permets toutefois d'en décomposer une bonne partie.The object of the invention therefore relates to a first stage of charge distillation treated, at temperatures between the initial point and the end point of the load in question. These temperatures are therefore between 20 ° C and 600 ° C. The object is not not here, as in patent JP103377 to decompose the compounds organomercuric in metallic mercury, but to carry out a distillation in several cuts, which allows however to decompose a good part.

Donc, le fractionnement préalable des charges ci-dessus à démercuriser permet de concentrer une grande partie du mercure métallique dans les coupes les plus légères. Ainsi, il a été observé une augmentation de la concentration en mercure dans les coupes légères obtenues après l'étape de fractionnement, mercure obtenu notamment par décomposition de composés organométalliques du mercure ou par décomposition thermique des boues (sludges) dans lesquelles le mercure est présent. Il a ainsi été observé une baisse de la concentration en mercure dans les coupes les plus lourdes, au bénéfice des coupes les plus légères, qui elles se sont enrichies en mercure.Therefore, the prior splitting of the above charges to be demercurized makes it possible to concentrate a large part of the metallic mercury in the lightest cuts. Thus, an increase in the mercury concentration was observed in the light cuts obtained after the fractionation stage, mercury obtained in particular by decomposition of organometallic compounds of mercury or by decomposition thermal of sludges in which mercury is present. It was thus observed a drop in the mercury concentration in the heaviest cuts, for the benefit of the lightest cuts, which are enriched in mercury.

De façon plus précise, il a maintenant été découvert une répartition particulière du mercure dans les effluents de distillation. La transformation de composés divers de mercure en mercure élémentaire, par l'étape de distillation conduit à une forte augmentation de la concentration du mercure dans les coupes légères et à une baisse de la concentration du mercure métallique dans les coupes lourdes. Ce changement de répartition du mercure est complètement inattendu puisque la température d'ébullition du mercure métallique étant de 356 °C, le mercure devrait se concentrer dans la fraction lourde. Toutefois, une distillation ne permet pas de décomposer toutes les espèces du mercure en mercure métallique, il reste donc, concentrées dans les coupes intermédiaires, des espèces mercuriques non métallique.More specifically, a particular distribution has now been discovered. mercury in the distillation effluents. The transformation of various compounds of mercury to elemental mercury, by the distillation stage leads to a strong increased concentration of mercury in light cuts and lower of the concentration of metallic mercury in heavy cuts. This change distribution of mercury is completely unexpected since the temperature metal mercury boiling point is 356 ° C, mercury should concentrate in the heavy fraction. However, distillation does not break down all of the mercury species into metallic mercury, so it remains concentrated in intermediate cuts, non-metallic mercuric species.

De plus, cette étape de distillation présente l'avantage de concentrer dans la partie la plus lourde du distillat, les particules en suspension appelées sludges et formés de composés minéraux solides (silice...) et/ou d'hydrocarbures lourds, sous forme condensés, dans lesquels le mercure qui était présent sous forme métallique ou organométallique a été décomposé sous l'effet de la température.In addition, this distillation stage has the advantage of concentrating in the part the heavier of the distillate, the suspended particles called sludges and formed of solid mineral compounds (silica, etc.) and / or heavy hydrocarbons, in the form condensed, in which the mercury that was present in metallic form or organometallic has been decomposed under the effect of temperature.

L'invention concerne donc un procédé d'élimination de mercure et éventuellement d'arsenic dans une charge hydrocarbonée, le procédé comportant :

  • (1) une distillation (ou fractionnement) préalable de la dite charge hydrocarbonée conduisant à diverses coupes. Cette distillation est effectuée dans un domaine de température généralement compris entre environ 120 et 500°C en fonction de la nature et des propriétés de la dite charge.
  • (2) une démercurisation (et éventuellement une désarsenification) effectuée sur au moins une des coupes les plus lourdes, cette démercurisation étant effectuée en deux étapes :
  • (a) une première étape comportant la mise en contact de la coupe dite lourde en présence d'hydrogène et d'un catalyseur. Cette étape a pour but de transformer notamment les organométalliques du mercure, autrement dit d'activer le mercure (éventuellement l'arsenic). On peut opérer avantageusement par exemple, selon le procédé de la demanderesse décrit dans le brevet US4911825, consistant à mettre en contact la charge en présence d'hydrogène avec un catalyseur renfermant au moins un métal du groupe constitué par le nickel, le cobalt, le fer et le palladium. Le mercure n'est pas (ou très peu) capté par le catalyseur mais il est activé sur ce catalyseur de façon à être capté, dans la deuxième étape décrit ci-dessous par une masse renfermant par exemple du soufre ou des composés soufrés.
  • (b) une deuxième étape consistant à faire passer au moins en partie l'effluent de première étape sur une masse de captation de mercure renfermant par exemple du soufre et/ou au moins un composé soufré, c'est à dire à faire passer le dit effluent de première étape sur au moins un adsorbant à base par exemple de sulfure métallique déposé sur un support. On utilisera avantageusement la technique décrit dans le brevet de la demanderesse US-A-4094777
  • (3) et éventuellement une adsorption de mercure contenu dans au moins une des coupes les plus légères. Cette absorption est effectuée sur un adsorbant ou masse de captation refermant par exemple du soufre et/ou au moins un composé soufré, par exemple encore un adsorbant à base de sulfure métallique déposé sur un support. Là encore, on utilisera avantageusement la méthode décrite dans le brevet de la demanderesse US-A-4094777.
    • The invention therefore relates to a process for removing mercury and possibly arsenic from a hydrocarbon feedstock, the process comprising:
  • (1) prior distillation (or fractionation) of said hydrocarbon feed leading to various cuts. This distillation is carried out in a temperature range generally between approximately 120 and 500 ° C. depending on the nature and the properties of said charge.
  • (2) demercurization (and possibly de-arsenification) carried out on at least one of the heaviest cuts, this demercurization being carried out in two stages:
  • (a) a first step comprising bringing the so-called heavy cut into contact in the presence of hydrogen and a catalyst. The purpose of this step is to transform in particular the organometallics of mercury, in other words to activate mercury (possibly arsenic). One can operate advantageously, for example, according to the process of the applicant described in patent US4911825, consisting in bringing the charge in the presence of hydrogen with a catalyst containing at least one metal from the group consisting of nickel, cobalt, iron and palladium. Mercury is not (or very little) captured by the catalyst but it is activated on this catalyst so as to be captured, in the second step described below by a mass containing for example sulfur or sulfur-containing compounds.
  • (b) a second step consisting in passing at least partially the effluent of the first step over a mass of mercury capture containing for example sulfur and / or at least one sulfur-containing compound, that is to say passing the said first stage effluent on at least one adsorbent based for example on metal sulfide deposited on a support. The technique described in the applicant's patent US-A-4094777 will advantageously be used.
  • (3) and possibly an adsorption of mercury contained in at least one of the lightest cuts. This absorption is carried out on an adsorbent or capture mass containing, for example, sulfur and / or at least one sulfur-containing compound, for example also an adsorbent based on metallic sulfide deposited on a support. Again, the method described in the applicant's patent US-A-4094777 will advantageously be used.

    • Exemple 1 : Example 1 :

    La charge distillée est un condensat contenant des teneurs de mercure et arsenic respectivement de 500 et 200 ppb et une teneur en sludges de 2000 ppm (contenant de 1 à 5% pds de mercure). La charge est distillée en cinq coupes et les répartitions du mercure et de l'arsenic sont présentées sur les deux graphiques suivants:

    Figure 00040001
    Figure 00040002
    The distilled charge is a condensate containing mercury and arsenic contents of 500 and 200 ppb respectively and a sludge content of 2000 ppm (containing from 1 to 5% by weight of mercury). The charge is distilled in five sections and the distributions of mercury and arsenic are presented on the following two graphs:
    Figure 00040001
    Figure 00040002

    L'analyse précise des espèces du mercure présentes dans ces différentes coupes montrent la répartition suivante : Coupes Pi-36°C 36-70°C 70-100°C 100-170°C >170°C Types de mercure Hg° Hg° Hg° OM OM The precise analysis of the mercury species present in these different sections shows the following distribution: Cups Pi-36 ° C 36-70 ° C 70-100 ° C 100-170 ° C > 170 ° C Types of mercury Hg ° Hg ° Hg ° OM OM

    La démercurisation de ces coupes va donc nécessiter l'installation d'un simple adsorbeur de mercure métallique sur les coupes contenant du mercure métallique, tel que décrit dans la présente invention. En revanche, les coupes les plus lourdes (>100°C), coupes qui contiennent des composés organométalliques du mercure mais aussi de l'arsenic (voir figure 2) seront donc décontaminées par l'installation d'une unité de purification en deux étapes, telle que décrit dans la présente invention.The demercurization of these cuts will therefore require the installation of a simple metallic mercury adsorber on sections containing metallic mercury, such as as described in the present invention. On the other hand, the heaviest cuts (> 100 ° C), cuts which contain organometallic compounds of mercury but also arsenic (see figure 2) will therefore be decontaminated by the installation of a two-stage purification unit, as described in the present invention.

    De plus, les boues (ou sludges) présentes dans la charge et qui en plus contiennent du mercure se retrouvent après distillation dans la coupe la plus lourde (>170°C selon l'exemple) et sont en plus totalement démercurisées.In addition, the sludges present in the load and which additionally contain of the mercury is found after distillation in the heaviest cut (> 170 ° C according to example) and are also completely demercurized.

    Exemple 2 : Example 2 :

    L'exemple suivant reprend, selon la méthode de l'exemple 1, la distillation d'un autre condensat, ne contenant que du mercure mais à une teneur de 1500 ppb. La répartition du mercure dans les différentes coupes est présentée ci-dessous :

    Figure 00050001
    The following example resumes, according to the method of Example 1, the distillation of another condensate, containing only mercury but at a content of 1500 ppb. The distribution of mercury in the different sections is presented below:
    Figure 00050001

    L'analyse des composés du mercure dans les différentes coupes montre la présence exclusive de mercure métallique. L'installation d'un simple adsorbeur de mercure sur chacune de ces coupes permet une efficacité de démercurisation de plus de 99%.Analysis of the mercury compounds in the different sections shows the presence exclusive of metallic mercury. The installation of a simple mercury adsorber on each of these cuts allows a demercurization efficiency of more than 99%.

    Claims (7)

    Procédé d'élimination de mercure et éventuellement d'arsenic d'une charge hydrocarbonée comprenant : 1) une distillation de la charge hydrocarbonée de façon à obtenir au moins une coupe légère et au moins une coupe lourde, 2) un traitement d'au moins une dite coupe lourde lequel traitement comporte deux étapes: une première étape de mise en contact de la coupe dite lourde avec de l'hydrogène et un catalyseur, une deuxième étape consistant à faire passer l'effluent de la première étape sur une masse de captation de mercure, éventuellement d'arsenic, procédé dans lequel en outre, on fait passer sur une masse de captation du mercure, éventuellement éventuellement d'arsenic, au moins une coupe dite légère en provenance de la distillation.Process for removing mercury and optionally arsenic from a hydrocarbon feedstock comprising: 1) distillation of the hydrocarbon feedstock so as to obtain at least one light cut and at least one heavy cut, 2) a treatment of at least one so-called heavy cut which treatment comprises two stages: a first step of bringing the so-called heavy cut into contact with hydrogen and a catalyst, a second step consisting in passing the effluent from the first step over a mass for capturing mercury, possibly arsenic, a process in which at least one so-called light fraction from distillation is passed over a collection mass of mercury, possibly optionally arsenic. Procédé selon la revendication 1 dans lequel au cours de la dite première étape, le catalyseur renferme au moins un métal choisi dans le groupe constitué par le nickel, le cobalt, le fer et le palladium.The method of claim 1 wherein in said first step, the catalyst contains at least one metal chosen from the group consisting of nickel, cobalt, iron and palladium. Procédé selon l'une des revendications 1 à 2 dans lequel au cours de la dite deuxième étape, la masse de captation ou masse adsorbante renferme du soufre et/ou au moins un composé soufré.Method according to one of claims 1 to 2 wherein during said second stage, the capture mass or adsorbent mass contains sulfur and / or at least one sulfur compound. Procédé selon la revendication 3 dans lequel la masse de captation renferme au moins un sulfure métallique déposé sur un support.Method according to claim 3, in which the capture mass contains the minus a metal sulfide deposited on a support. Procédé selon l'une des revendications 1 à 3 dans lequel la masse de captation sur laquelle on fait passer au moins la coupe dite légère, renferme du soufre et/ou au moins un composé soufré.Method according to one of Claims 1 to 3, in which the collection mass on which is passed at least the so-called light cut, contains sulfur and / or minus a sulfur compound. Procédé selon la revendication 5 dans lequel la dite masse de captation renferme au moins un sulfure métallique déposé sur un support.Method according to Claim 5, in which the said collecting mass contains at least one metal sulfide deposited on a support. Procédé selon l'une des revendications 1 à 6 dans lequel la distillation est effectuée entre 120 et 500°C.Process according to one of Claims 1 to 6, in which the distillation is carried out between 120 and 500 ° C.
    EP00403581A 2000-01-07 2000-12-18 Process for the elimination of mercury and arsenicum from hydrocarbon destillates Expired - Lifetime EP1114856B1 (en)

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    FR0000248 2000-01-07
    FR0000248A FR2803597B1 (en) 2000-01-07 2000-01-07 PROCESS FOR CAPTURING MERCURY AND ARSENIC FROM A DISTILLED HYDROCARBON CUT

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    KR20040105233A (en) * 2002-04-03 2004-12-14 사빅 하이드로카본스 비.브이. A process for the removal of arsine from a hydrocarbon stream with an adsorbent
    FR2876113B1 (en) * 2004-10-06 2008-12-12 Inst Francais Du Petrole METHOD OF SELECTIVELY CAPTRATING ARSENIC IN ESSENCE RICH IN SULFUR AND OLEFINS
    US7968063B2 (en) * 2005-02-24 2011-06-28 Jgc Corporation Mercury removal apparatus for liquid hydrocarbon
    AU2006216345B2 (en) * 2005-02-24 2010-04-29 Jgc Corporation Apparatus for removing mercury in liquid hydrocarbon
    FR2987368B1 (en) 2012-02-27 2015-01-16 Axens PROCESS FOR REMOVING MERCURY FROM HYDROCARBON LOAD WITH HYDROGEN RECYCLE

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    DE60029079D1 (en) 2006-08-10
    ES2265898T3 (en) 2007-03-01
    KR20010088308A (en) 2001-09-26
    JP2001226681A (en) 2001-08-21
    FR2803597B1 (en) 2003-09-05
    FR2803597A1 (en) 2001-07-13
    KR100733799B1 (en) 2007-07-02
    DE60029079T2 (en) 2006-11-16
    CA2330457A1 (en) 2001-07-07
    JP5384775B2 (en) 2014-01-08
    EP1114856B1 (en) 2006-06-28
    US6878265B2 (en) 2005-04-12
    CA2330457C (en) 2010-03-30

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