RU2624625C1 - Plant of hydrogen sulphide and light mercaptanes blowing from oil - Google Patents

Plant of hydrogen sulphide and light mercaptanes blowing from oil Download PDF

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RU2624625C1
RU2624625C1 RU2016130541A RU2016130541A RU2624625C1 RU 2624625 C1 RU2624625 C1 RU 2624625C1 RU 2016130541 A RU2016130541 A RU 2016130541A RU 2016130541 A RU2016130541 A RU 2016130541A RU 2624625 C1 RU2624625 C1 RU 2624625C1
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oil
line
blowing
sulfur
gas
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RU2016130541A
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Russian (ru)
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Андрей Владиславович Курочкин
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Андрей Владиславович Курочкин
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    • 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
    • C10G27/00—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation
    • C10G27/04—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation with oxygen or compounds generating oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/16—Fractionating columns in which vapour bubbles through liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/52—Hydrogen sulfide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/02—Preparation of sulfur; Purification
    • C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
    • 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
    • C10G29/00—Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
    • C10G29/06—Metal salts, or metal salts deposited on a carrier

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

FIELD: oil and gas industry.
SUBSTANCE: described plant of hydrogen sulphide and light mercaptans blowing from the oil, including the desorber, equipped with the lines of heated oil inlet and cleaned oil discharge, the circulating gas flow supply line, and the vent gas discharge line. At the vent gas discharge line there is the low-temperature chelate purification unit by absobent, based on the chelated iron complexes, equipped with the cleaned gas discharge lines as the circulating gas flow, the air inlet, and the vent gas discharge and the sulfur suspension supply into the heated oil inlet line.
EFFECT: reduction of energy costs and increase of industrial safety.
2 cl, 1 dwg

Description

Изобретение относится к устройствам для промысловой подготовки к транспорту сероводород- и меркаптансодержащей нефти по показателю "содержание сероводорода и метил- и этилмеркаптанов" и может найти применение в нефтяной промышленности.The invention relates to a device for field preparation for the transport of hydrogen sulfide and mercaptan-containing oil in terms of the "content of hydrogen sulfide and methyl and ethyl mercaptans" and may find application in the oil industry.

Известен способ очистки сероводород- и меркаптансодержащей нефти [RU 2372379, опубл. 10.11.2009 г., МПК C10G 29/20], осуществляемый на установке, включающей колонну ректификации нагретой нефти с выведением товарной нефти и газа, и блок его очистки промывкой водным раствором нейтрализатора сероводорода в присутствии десорбирующего газа и воды, выделенной из нефти.A known method of purification of hydrogen sulfide and mercaptan-containing oil [RU 2372379, publ. November 10, 2009, IPC C10G 29/20], carried out in a facility including a heated oil rectification column with the removal of marketable oil and gas, and its purification unit by washing with an aqueous solution of a hydrogen sulfide neutralizer in the presence of stripping gas and water extracted from oil.

Недостатком известной установки являются высокие эксплуатационные расходы из-за постоянного расхода дорогостоящего химического реагента - нейтрализатора сероводорода.A disadvantage of the known installation is its high operating costs due to the constant consumption of an expensive chemical reagent - a hydrogen sulfide neutralizer.

Наиболее близким по технической сущности является способ очистки сероводород- и меркаптансодержащей нефти [RU 2510640, опубл. 10.04.2014 г., МПК C10G 27/04], осуществляемый на установке, включающей размещенные на линии подачи нефти нагреватель и массообменный аппарат, состоящий из абсорбционной и десорбционной секций (десорбер-абсорбер), при этом последняя оснащена линиями ввода нагретой нефти, вывода очищенной нефти в абсорбционную секцию, линией подачи циркулирующих продуктов окисления и линией подачи газа отдувки, на которой установлена газодувка и расположены примыкание линии подачи воздуха и обогреваемый каталитический реактор высокотемпературного селективного окисления сероводорода и меркаптанов, оборудованный линией вывода продуктов окисления, которая разделяется на линию подачи циркулирующих продуктов окисления и линию подачи балансовых продуктов окисления в абсорбционную секцию, оснащенную также линиями вывода очищенного газа и товарной нефти.The closest in technical essence is a method of purification of hydrogen sulfide and mercaptan-containing oil [RU 2510640, publ. 04/10/2014, IPC C10G 27/04], carried out on a plant including a heater and a mass transfer apparatus located on the oil supply line, consisting of absorption and desorption sections (stripper-absorber), the latter equipped with heated oil inlet and outlet lines refined oil to the absorption section, a supply line of circulating oxidation products and a blow-off gas supply line, on which a gas blower is installed and an abutment of the air supply line and a heated high-temperature selective catalytic reactor are located acidification of hydrogen sulfide and mercaptans, equipped with the output line of the oxidation products, which supply line is divided into the circulating products of oxidation and a line feed balance of oxidation products to the absorption section are also fitted with output lines of the purified gas and product oil.

Основными недостатками данной установки являются высокие энергозатраты из-за наличия реактора высокотемпературного окисления, а также низкая промышленная безопасность из-за смешения с воздухом газа отдувки, содержащего углеводороды.The main disadvantages of this installation are the high energy consumption due to the presence of a high-temperature oxidation reactor, as well as low industrial safety due to mixing with the air blowing gas containing hydrocarbons.

Задачей является снижение энергозатрат и повышение промышленной безопасности.The objective is to reduce energy consumption and increase industrial safety.

Техническим результатом является снижение энергозатрат и повышение промышленной безопасности за счет установки блока низкотемпературной хелатной очистки газа отдувки абсорбентом на основе хелатных комплексов железа, не предусматривающего контакт углеводородного газа с воздухом.The technical result is to reduce energy consumption and increase industrial safety due to the installation of a block of low-temperature chelate gas purification of the blow-off absorber based on chelated iron complexes, which does not provide for the contact of hydrocarbon gas with air.

Указанный технический результат достигается тем, что в известной установке, включающей десорбер, оснащенный линиями ввода нагретой нефти и вывода очищенной нефти, линией подачи циркулирующего газового потока и линией вывода газа отдувки, особенностью является то, что на линии вывода газа отдувки расположен блок низкотемпературной хелатной очистки абсорбентом на основе хелатных комплексов железа, оснащенный линиями вывода очищенного газа в качестве циркулирующего газового потока, ввода воздуха, а также вывода отходящего газа и подачи суспензии серы в линию ввода нагретой нефти.The specified technical result is achieved by the fact that in a known installation including a stripper equipped with heated oil inlet and refined oil inlet lines, a circulating gas flow inlet line and a blow-out gas outlet line, a feature is that a low-temperature chelate cleaning unit is located on the outlet line of the blow-off gas an absorbent based on iron chelate complexes, equipped with purified gas discharge lines as a circulating gas stream, air inlet, and exhaust gas outlet and supply suspension of sulfur in the input line of heated oil.

Линия подачи суспензии серы может быть соединена со входом в один из сепараторов начальных ступеней подготовки нефти или с устройством для выделения товарной серы, что позволяет уже на начальной стадии подготовки нефти уменьшить содержание в ней легких меркаптанов, за счет их окисления суспендированной серой до дисульфидов. Нагретая нефть может быть получена нагревом нефти, подаваемой на отдувку, в нагревателе любого типа.The sulfur suspension feed line can be connected to the entrance to one of the separators of the initial stages of oil preparation or to a device for separating commercial sulfur, which allows reducing the content of light mercaptans in it at the initial stage of oil preparation due to their oxidation by suspended sulfur to disulfides. Heated oil can be obtained by heating the oil fed to the blower in any type of heater.

Смешение суспензии серы с нефтью позволяет уменьшить содержание легких меркаптанов еще до подачи нефти в десорбер за счет их окисления серой в жидкие, растворимые в нефти относительно малолетучие соединения (ди-, полисульфиды и т.п.), за счет чего повысить ее качество.Mixing a suspension of sulfur with oil makes it possible to reduce the content of light mercaptans even before the oil is fed into the stripper due to their oxidation by sulfur into liquid, relatively low volatile compounds soluble in oil (di-, polysulfides, etc.), thereby improving its quality.

Установки низкотемпературной хелатной очистки газов от сероводорода абсорбентом на основе хелатных комплексов железа известны из уровня техники, широко используются для очистки сероводородсодержащих газов и содержат в качестве основных технологических аппаратов абсорбер, колонну регенерации абсорбента продувкой воздухом и узел выделения серы или ее суспензии. Процесс осуществляется при 30-40°С вместо 250-300°С согласно прототипу, что позволяет снизить энергозатраты, а отсутствие контакта углеводородного газа с воздухом повышает промышленную безопасность установки.Installations of low-temperature chelate gas treatment from hydrogen sulfide with an absorbent based on iron chelate complexes are known from the prior art, are widely used for purification of hydrogen sulfide-containing gases and contain an absorber, an absorber regeneration column by air blowing and a sulfur or suspension suspension unit as main technological devices. The process is carried out at 30-40 ° C instead of 250-300 ° C according to the prototype, which reduces energy costs, and the absence of contact of hydrocarbon gas with air increases the industrial safety of the installation.

Установка состоит из десорбера 1 и блока хелатной очистки 2. При работе установки нефть со второй ступени сепарации или из концевой сепарационной установки по линии 3 подают в верхнюю часть десорбера 1, например, насадочного типа, в нижнюю часть которого по линии 4 из блока 2 подают очищенный газ, с низа по линии 5 выводят очищенную нефть, а газ отдувки из верха десорбера 1 направляют по линии 6 в блок 2, где очищают регенерируемым абсорбентом па основе хелатных комплексов железа, а очищенный газ рециркулируют. Кроме того, в блок 2 по линии 7 подают воздух для регенерации абсорбента, по линии 8 выводят отходящий газ, а по линии 9 - суспензию серы в линию 3, по меньшей мере часть суспензии серы при необходимости направляют на утилизацию по линии 10 (показано пунктиром).The installation consists of a stripper 1 and a chelate cleaning unit 2. During operation of the installation, oil from the second separation stage or from the end separation unit is fed through line 3 to the upper part of stripper 1, for example, of a packed type, into the lower part of which, via line 4, from block 2 is fed purified gas, purified oil is discharged from the bottom through line 5, and the blow-off gas from the top of stripper 1 is sent via line 6 to block 2, where it is purified with a regenerated absorbent based on iron chelate complexes, and the purified gas is recycled. In addition, air is supplied to block 2 through line 7 for absorbent regeneration, off-gas is discharged through line 8, and sulfur suspension is discharged through line 9, and at least part of the sulfur suspension is sent for utilization through line 10 (shown by a dotted line if necessary) )

Таким образом, предлагаемая установка позволяет снизить энергозатраты, повысить промышленную безопасность и может найти применение в промышленности.Thus, the proposed installation can reduce energy consumption, increase industrial safety and can find application in industry.

Claims (2)

1. Установка отдувки сероводорода и легких меркаптанов из нефти, включающая десорбер, оснащенный линиями ввода нагретой нефти и вывода очищенной нефти, линией подачи циркулирующего газового потока и линией вывода газа отдувки, отличающаяся тем, что на линии вывода газа отдувки расположен блок низкотемпературной хелатной очистки абсорбентом на основе хелатных комплексов железа, оснащенный линиями вывода очищенного газа в качестве циркулирующего газового потока, ввода воздуха, а также вывода отходящего газа и подачи суспензии серы в линию ввода нагретой нефти.1. Installation of stripping hydrogen sulfide and light mercaptans from oil, including a stripper equipped with lines for entering heated oil and withdrawing refined oil, a supply line for a circulating gas stream and a discharge line for blowing gas, characterized in that a low-temperature chelate cleaning unit with an absorbent is located on the outlet line for the blowing gas based on chelated iron complexes, equipped with purified gas outlet lines as a circulating gas stream, air inlet, as well as exhaust gas outlet and sulfur suspension in line th input of heated oil. 2. Установка по п. 1, отличающаяся тем, что линия подачи суспензии серы соединена со входом в один из сепараторов начальных ступеней подготовки нефти или с устройством для выделения товарной серы.2. Installation according to claim 1, characterized in that the sulfur slurry supply line is connected to the input to one of the separators of the initial stages of oil preparation or to a device for separating commercial sulfur.
RU2016130541A 2016-07-25 2016-07-25 Plant of hydrogen sulphide and light mercaptanes blowing from oil RU2624625C1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382918A (en) * 1981-11-24 1983-05-10 Shell Oil Company Method of removing hydrogen sulfide from gases utilizing a stabilized iron chelate solution
US5223173A (en) * 1986-05-01 1993-06-29 The Dow Chemical Company Method and composition for the removal of hydrogen sulfide from gaseous streams
RU2220756C2 (en) * 2002-05-07 2004-01-10 Фахриев Ахматфаиль Магсумович Hydrogen sulfide-containing crude oil pretreatment process
RU2246342C1 (en) * 2003-07-23 2005-02-20 Фахриев Ахматфаиль Магсумович Absorbent for removing hydrogen sulfide from gases
RU2510640C1 (en) * 2013-01-10 2014-04-10 Андрей Владиславович Курочкин Method for treatment of oil containing hydrogen sulfide and mercaptan

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382918A (en) * 1981-11-24 1983-05-10 Shell Oil Company Method of removing hydrogen sulfide from gases utilizing a stabilized iron chelate solution
US5223173A (en) * 1986-05-01 1993-06-29 The Dow Chemical Company Method and composition for the removal of hydrogen sulfide from gaseous streams
RU2220756C2 (en) * 2002-05-07 2004-01-10 Фахриев Ахматфаиль Магсумович Hydrogen sulfide-containing crude oil pretreatment process
RU2246342C1 (en) * 2003-07-23 2005-02-20 Фахриев Ахматфаиль Магсумович Absorbent for removing hydrogen sulfide from gases
RU2510640C1 (en) * 2013-01-10 2014-04-10 Андрей Владиславович Курочкин Method for treatment of oil containing hydrogen sulfide and mercaptan

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