Amine Regeneration System Overview

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

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

Flashcards

Environmental Regulations

Limits the hydrogen sulfide in fuel gas burning.

Amine Regeneration Unit (ARU)

Unit that regenerates amine to remove acid gases.

Rich Amine

Amine that contains high levels of H2S and CO2.

Lean Amine

Regenerated amine free of acid gases, ready for reuse.

Signup and view all the flashcards

Stripping Technology

Process to regenerate lean amine by reversing reactions.

Signup and view all the flashcards

Gas Contacting System

System that provides rich amine to the ARU.

Signup and view all the flashcards

Lean Amine Subsystem

Prepares regenerated amine for absorption use.

Signup and view all the flashcards

Separation Vessel

Unit that separates and heats rich amine.

Signup and view all the flashcards

Rich Amine Settler

A vessel that separates lighter hydrocarbons from rich amine before regeneration.

Signup and view all the flashcards

Purpose of the Rich Amine Settler

To remove lighter hydrocarbons by pressure reduction, causing flash vaporization.

Signup and view all the flashcards

Feed Sources for Rich Amine Settler

Rich amine can come from HDS Absorber, Rich Amine Tank, and De-Inventory Pump.

Signup and view all the flashcards

Amine Settler Scrubber

An absorption column that removes hydrogen sulfide and carbon dioxide from sour gas.

Signup and view all the flashcards

Role of MDEA in Scrubber

Methyldiethanolamine absorbs hydrogen sulfide and some CO2 from sour gas.

Signup and view all the flashcards

Sour Gas Stream

Gas containing hydrogen sulfide and carbon dioxide before purification.

Signup and view all the flashcards

Contact Flow in Scrubber

Lean amine counter-flows with sour gas, causing solute transfer from gas to liquid phase.

Signup and view all the flashcards

Amine Settler

Equipment separating rich amine from sweetened off-gas.

Signup and view all the flashcards

Amine Regenerator

Tower that removes acid gases from rich amine using heat.

Signup and view all the flashcards

Amine Regenerator Reboiler

Heats rich amine to vaporize and drive off acid gases.

Signup and view all the flashcards

Overhead Condenser

Cools and condenses gases from the top of the regenerator.

Signup and view all the flashcards

Sour Gas

Gas stream containing H2S and CO2 exiting the regenerator.

Signup and view all the flashcards

Sour Water Pumping

Process of pumping sour water from the accumulator to Amine Regenerator.

Signup and view all the flashcards

Reflux Flow Rate

Rate controlled to maintain level in Amine Regenerator Overhead Accumulator.

Signup and view all the flashcards

SWS Collection Drum

Collects and recovers a portion of sour water pumped from the system.

Signup and view all the flashcards

Sour Water Tank Level Control

Controls the level of sour water in the Sour Water Tank.

Signup and view all the flashcards

Lean Amine Transfer

Transfer of lean amine from Amine Regenerator to Heat Exchanger.

Signup and view all the flashcards

Rich Amine Pumping

Pumping rich amine through the Heat Exchanger for heating.

Signup and view all the flashcards

Amine Filter Function

Filtered lean amine returns to the pump suction for reuse.

Signup and view all the flashcards

Fresh Amine Storage

Tank that stores filtered nitrogen pressuring fresh amine into system.

Signup and view all the flashcards

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.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Sinclair ARU 1&2 Amine Regeneration System Module PDF

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser