Amine Regeneration System Overview
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What is the primary objective of the Amine Regeneration System?

  • To prepare the regenerated amine stream to be reused as a solvent.
  • To cool and filter the lean amine.
  • To separate and heat the rich amine.
  • To remove harmful acid gases from the rich amine. (correct)

    • What is the purpose of the Rich Amine Subsystem?

  • To recover hydrogen sulfide and send it to the Sulfur Recovery Unit.
  • To cool and filter the lean amine before it is reused as a solvent.
  • To receive rich amine from the Gas Contacting System and prepare it for regeneration. (correct)
  • To receive lean amine from the Amine Regeneration System and prepare it for absorption.

    • Which type of technology is primarily used in the Rich Amine Subsystem?

  • Absorption technology. (correct)
  • Regeneration technology.
  • Separation technology.
  • Stripping technology.

    • What is the role of the Lean Amine Subsystem?

    <p>To prepare the lean amine for reuse as a solvent by cooling and filtering it. (D)</p> Signup and view all the answers

    What is the main purpose of the Amine Regeneration Units #1 and #2?

    <p>To remove harmful acid gases from fuel gas streams. (B)</p> Signup and view all the answers

    What is the primary difference between ARU #1/#2 and ARU #3/#4?

    <p>ARU #1/#2 receives rich amine from the Gas Contacting System, while ARU #3/#4 receives rich amine from a different source. (D)</p> Signup and view all the answers

    What is meant by "lean" amine?

    <p>Amine that is free of acid gases. (C)</p> Signup and view all the answers

    Which of these options are correct about the Amine #1/#2 Contactor Feed Pump East/South (5P-117/155)? (Select all that apply)

    <p>It pumps lean amine from the Amine Regeneration System to the top of the scrubber. (D)</p> Signup and view all the answers

    What is the primary purpose of the Rich Amine Settler?

    <p>To remove lighter hydrocarbons from the rich amine before it is sent to the regenerator (C)</p> Signup and view all the answers

    What causes the lighter hydrocarbons to flash into vapor in the Rich Amine Settler?

    <p>The pressure reduction within the vessel (A)</p> Signup and view all the answers

    What is the main purpose of the Amine Regenerator?

    <p>To remove hydrogen sulfide and carbon dioxide from the rich amine (A)</p> Signup and view all the answers

    What is 'lean' amine?

    <p>Amine that has been stripped of acid gases (B)</p> Signup and view all the answers

    What is the purpose of the Amine Settler Scrubber?

    <p>To remove hydrogen sulfide and carbon dioxide from the sour gas (B)</p> Signup and view all the answers

    From where is lean amine pumped to the Amine Settler Scrubber?

    <p>The Amine #1/#2 Contactor Feed Pump East/South (A)</p> Signup and view all the answers

    Where is the rich amine sent after it is heated in the Amine Regenerator Reboiler?

    <p>To tray #1 of the Amine Regenerator (D)</p> Signup and view all the answers

    What happens to the acid gases removed from the rich amine in the Amine Regenerator?

    <p>They are sent to the Sulfur Recovery Unit (B)</p> Signup and view all the answers

    What is the primary solvent used in the Amine Settler Scrubber to absorb hydrogen sulfide and carbon dioxide?

    <p>Methyldiethanolamine (MDEA) (A)</p> Signup and view all the answers

    What is the purpose of the Amine Regenerator Reboiler?

    <p>To provide heat to the rich amine and vaporize it (D)</p> Signup and view all the answers

    What is the flow direction of the lean amine and the sour gas stream in the Amine Settler Scrubber?

    <p>The lean amine flows down and the sour gas flows up (counter-current) (C)</p> Signup and view all the answers

    What happens to the hydrogen sulfide and carbon dioxide in the sour gas as it contacts the lean amine in the scrubber?

    <p>They are absorbed by the amine and remain in the aqueous phase (A)</p> Signup and view all the answers

    Which of these components is responsible for cooling the rich amine before it is sent to the Amine Settler?

    <p>Amine Regenerator #1/#2 Feed/Bottoms Exchanger (5EX-1647/2250) (B), Amine Regenerator #1/#2 Feed/Bottoms Exchanger (5EX-1647/2250) (C)</p> Signup and view all the answers

    Which of the following is NOT a source of rich amine to the Amine Settler?

    <p>Amine #1/#2 Contactor Feed Pump East/South (C)</p> Signup and view all the answers

    Which of these components is responsible for removing water vapor from the sour gas stream?

    <p>Amine Regenerator #1/#2 Overhead Condenser (5EX-1650/2256) (D)</p> Signup and view all the answers

    What is the purpose of the Rich Solvent Pumps East/West and South/North?

    <p>To pump the rich amine from the Amine Settler to the Amine Regenerator (C)</p> Signup and view all the answers

    What is the role of the Amine Regenerator #1/#2 Feed/Bottoms Exchanger (5EX-1647/2250)?

    <p>It heats the lean amine flowing through the shell side using rich amine on the tube side. (A)</p> Signup and view all the answers

    What is the main purpose of the Amine #1/#2 Contactor Feed Pump West/North (5P-118/156) and East/South (5P-117/155)?

    <p>To pump lean amine from the cooler to the Gas Contacting System. (C)</p> Signup and view all the answers

    Which of the following components is involved in the process of cooling lean amine?

    <p>Amine Regenerator #1/#2 Bottoms Cooler (5EX-1649/2251) (A)</p> Signup and view all the answers

    What is the primary function of the Amine Filter #2 (5PV-2249)?

    <p>To remove impurities from the lean amine. (C)</p> Signup and view all the answers

    How is nitrogen used in the process of fresh amine?

    <p>To pressurize the fresh amine tank. (C)</p> Signup and view all the answers

    What is the ultimate destination of the sour water that is pumped by 5P-116/154 to the Sour Water Tank (9TK-312)?

    <p>The Flare Header for venting. (B)</p> Signup and view all the answers

    Which of the following components is directly involved in the process of heating the rich amine?

    <p>Amine Regenerator #1/#2 Feed/Bottoms Exchanger (5EX-1647/2250) (D)</p> Signup and view all the answers

    Which of the following is NOT a component involved in the Gas Contacting System?

    <p>Amine Regenerator #1/#2 Overhead Accumulator (B)</p> Signup and view all the answers

    Study Notes

    Amine Regeneration Unit (ARU) Overview

    • Environmental regulations limit hydrogen sulfide (H2S) in fuel gas at the Sinclair Refinery.
    • ARU #1 and #2 use methyldiethanolamine (MDEA) to remove acid gases (H2S and CO2) from fuel gas streams.
    • The amine is regenerated to be reused.

    Amine Regeneration System

    • Receives "rich" amine (high in H2S and CO2) from the Gas Contacting System.
    • Stripping technology is used to regenerate the rich amine and remove acid gases.
    • A secondary objective is to recover H2S for use in the Sulfur Recovery Unit (SRU).

    Rich Amine Subsystem

    • Receives rich amine from the Gas Contacting System.
    • Purpose is to separate and heat rich amine for subsequent regeneration.
    • Rich amine is separated from light hydrocarbons (using a separation vessel and heat exchanger) and any acid gases are removed.
    • Sweetened off-gas (free of hydrogen sulfide) exits the top of the Amine Settler Scrubber.
    • Additional rich amine can be added from the HDS Absorber or the Rich Amine Settling Tank

    Rich Amine Pumping

    • Rich amine is pumped from the bottom of the Amine Settler to the Amine Regenerator using the Rich Solvent Pumps.
    • Lean amine (from the ARU Amine Filter) can be sent to the Rich Solvent Pumps to combine with the rich amine.

    Amine Regenerator

    • 20-tray tower using stripping technology to remove acid gases from rich amine.
    • Heat is used to thermally dissociate the acid gases from the amine.
    • Regenerates the rich amine into lean amine.

    Amine Regenerator Reboiler

    • The rich amine is heated to generate vapor feed into the tower.
    • Reboiler heats the rich amine using steam.

    Overhead Condenser

    • Cools and condenses the sour gas (containing H2S and CO2).
    • The cooled gas is separated in downstream equipment.

    Overhead Accumulator

    • Collects and stores condensed overhead stream.
    • Separates the acid gas, sour water, and slop oil by density differences.
    • Acid gas is sent to the Sulfur Recovery Unit (SRU).
    • Sour water can be pumped to the SWS Collection Drum or Sour Water Tank.

    Lean Amine Subsystem

    • Prepares regenerated amine stream to be reused as solvent in the absorption process.
    • This is done by cooling and filtering the lean amine.
    • Providing fresh amine ensures minimum lean amine strength.

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    Related Documents

    Sinclair ARU 1&2 Amine Regeneration System Module PDF

    Description

    This quiz covers the fundamental concepts and components of the Amine Regeneration System. Test your knowledge on subsystems, their purposes, and the technologies involved. Assess your understanding of lean and rich amine processes and their roles in gas treatment.

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