SRU

SRU - Claus Process Tutorial

SRU - Claus Process Simulation

SRU - (Sulfur Recovery Unit) Claus Process Tutorial

The interactive SRU tutorial provides an overview, fundamental principles, control principles and operating principles for a Claus Process used in a sulfur recovery unit (SRU), using voice, video, animation and graphics. The topics covered are:

Overview

Introduction
Importance of SRU
Process Overview

SRU Components

Amine Stripper
Sour Water Stripper
Thermal Reaction Furnace
Waste Heat Boiler
Sulfur Condensers
Catalytic Reactors

Principles of SRU

Absorption/Regeneration of Amine
Claus Reactions
Ammonia Destruction
Sulfur Condensation

Key Controlled and Operating Variables

Reboiler Steam to Feed Ratio
Amine Stripper Pressure
Amine Strength
Sour Water Stripper Pressure
Sour Water Stripper Condenser Temperature
Air Flow Control
Claus Burner Temperature
Catalytic Reactor Temperature
Sulfur Condenser Temperature
Reheater Temperature

Startup Operation

Introduction
Pre-Startup Check
Purge and Warm-up of Claus Unit
Warm Up of Amine Unit
Introduction of Rich-Amine to Amine Unit
Introduction of Amine Acid Gas to Claus Unit
Warm up of Sour Water Stripping Unit
Introduction of Sour Water to Sour Water Stripping Unit
Introduction of Sour Water Gas to Claus Unit

Shutdown Operation

Introduction
Shutdown of Sour Water Stripping Unit
Shutdown of Amine Unit
Shutdown of Claus Unit

Troubleshooting

Hydrocarbons Carryover
Amine Stripper Flooding
Amine Losses
Excessive Water in Gas to Claus Unit
Combustion Air Flow Problems
Degradation of Catalyst Activity
Plugged Sulfur Seal Legs
Sulfur Fires

SRU - (Sulfur Recovery Unit) Claus Process Simulation

The SRU simulation is a rigorous and high-fidelity mathematical process model that provides a realistic dynamic response for a sulfur recover unit (Claus Process).

Process Overview:

The sulfur recovery unit converts hydrogen sulfide (H2S) contained in the acid and sour water gas streams into elemental sulfur. It also oxidizes ammonia present in the sour water gas.

Major Sections:

Amine Stripper/Regenerator Unit

Sour Water Stripping Unit
Claus Unit with Thermal and Catalytic Reactors
Tail Gas Treating Unit
Incinerator
Sulfur Storage and Shipping Facilities

Major Operations for Trainee Practice:

Startup and Shutdown Operations
Normal Operations
Emergency Shutdown Operations
Troubleshooting Equipment, Instrument and Control Valve malfunctions
Malfunction Recovery Actions

Simulation Features:

Amine Stripper Foaming and Tray Plugging
Sour Water Stripper Tray Plugging
Effect on Thermal Reaction

Temperature
Hydrogen Sulfide Loading
Tail Gas Recycle

Effect on Catalytic Reaction

Temperature
Sulfur Condensation
Hydrogen Sulfide Loading
Space Velocity

Tail Gas Air Demand (H2S - 2 x SO2) Control
Effect of Change in Catalyst Bed Activity
Effect of Plugging of Sulfur Seal Legs
Effect of Hydrocarbon in Feed
Effect of Ammonia in Feed
Sulfur Fire in Sulfur Pit
Sulfur Loading to Tankers

Sections

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SRU