logo

Back

Sour water stripper

Applications: Many process units throughout a refinery generate significant quantities of sour water. Sour water collected within a refinery contains both H2S and NH3. These components are present as ammonium hydrosulphide (NH4HS) within the sour water. NH4HS is the salt of a weak base and a weak acid. In a solution this salt will be hydrolysed substantially to form H2S and NH3. In the aqueous phase the free H2S and the NH3 are volatile. The hydrolysis increases with higher temperatures, therefore the gaseous H2S and NH3 can be removed by the application of heat in a Sour Water Stripper. Depending on client requirements, a single stage or a two-stage stripper can be applied.

Description: The sour water feed is collected in a sour water flash drum to facilitate flashing and hydrocarbon separation. The sour water is then introduced to the top section of the sour water stripper column after heating in the feed effluent exchanger. In the stripping section of the sour water stripper column, the sour water is contacted counter currently with steam (from the reboiler) to free the H2S and NH3.

The sour gases from the stripper column are cooled with air or water, so that the majority of the water vapor is condensed. The separated sour condensate is reintroduced into the stripper column as reflux.

The sour gas is routed to the sulphur recovery unit (Claus plant) in order to recover elemental sulphur from the H2S, the stripped water is cooled further and typically routed to the waste water system.

DOWNLOAD LITERATURE

View More

  • Claus Tail Gas Treating – BSR® MDEA Process

    Applications: Refineries and gas plants around the world are challenged by new emission regulations, a stronger push to increase sulphur removal and the processing of higher sulphur crudes. The addition of a Beavon Sulfur removal - Methyldiethanolamine (BSR®-MDEA) Tail Gas Treatment Unit (TGTU) to ...

  • Gas treating (refinery / natural gas) ADIP process

    Applications: The ADIP process is a regenerative process developed to selectively reduce H2S in gas to very low concentrations in the presence of CO2. The ADIP process uses an aqueous solution of diisopropanol amine (DIPA) or the aqueous solution of methyldiethanol amine (MDEA). MDEA is used for those ...

  • Sulphur Recovery SUPERCLAUS® Process

    The SUPERCLAUS® process recovers elemental sulphur from H2S-containing gases originating from gas treating and sour water stripper plants. Yields up to 99.2% overall sulphur recovery, without any further tail gas clean-up, are possible. The SUPERCLAUS® process consists of a thermal stage followed ...

  • Plant control - advanced burner control (plus)

    Applications: The design intent is to have accurate SRU tail gas quality control in order to optimize sulphur recovery. ABC provides that. It is clearly superior over conventional SRU control and has always been Comprimo’s control system of choice for the EUROCLAUS®/SUPERCLAUS® process ...

  • Sulfur recovery - EUROCLAUS® process

    Applications: The EUROCLAUS® process recovers elemental sulphur from H2S-containing gases originating from gas treating and sour water stripper plants. The EUROCLAUS® process is an improvement of the SUPERCLAUS® process. Yields from 99.3 up to 99.5% overall sulphur recovery, without any further ...

  • Liquid hydrocarbon treating (LPG/PP/BB) - ADIP process

    Applications: Besides its use as a regenerative process for the reduction of H2S to very low levels in gases, the ADIP process is also used to selectively reduce H2S and COS to very low levels in liquid hydrocarbons, such as propane-propylene (PP), butanebutene (BB), LPG and NGLs. The process is based ...

  • Sulfur handling - Shell sulfur degassing process

    Applications: The Shell Sulphur Degassing Process has been developed to remove H2S and H2Sx from liquid sulphur eliminating potential toxic and explosion hazards associated with handling, transport and storage of liquid sulphur. Elemental sulphur produced by the Claus process contains both physically ...

  • Sour water stripper

    Applications: Many process units throughout a refinery generate significant quantities of sour water. Sour water collected within a refinery contains both H2S and NH3. These components are present as ammonium hydrosulphide (NH4HS) within the sour water. NH4HS is the salt of a weak base and a weak acid. ...

  • Responsive image Sabin Metal profitable hydrocracking
  • Responsive image Digital Refinery
  • Responsive image Refining GT-BTX PluS
  • Responsive image Designing deepcut vacuum units that work
  • Responsive image PROVALVE® Fixed Valve
  • Responsive image Reactor Internals Knowledge Hub
  • Responsive image Hardware for your operations
  • Responsive image FCC online diagnostic services for FCCU
  • Responsive image Galexia™ hydroprocessing platform
  • Responsive image Downstream industry process diagnostics