Sulfur Recovery Quiz

1
When an H2S leak occurs upwind of your location, the safest direction for you to go is* This field is required.
further downwind, to the muster point
climb up the nearest tower
a crosswind path to the muster point
remain where you are
2
An H2S concentration of ppm or greater is considered to be Immediately Dangerous to Life and Health (IDLH), and will start to cause a loss of smell and irritation to the eyes, nose, and lungs.* This field is required.
100 ppm
1000 ppm
50 ppm
200 ppm
3
The melting point of pure sulfur is ______ , while the ignition temperature is ______.* This field is required.
150°C (300°F), and 350°C (660°F)
119°C (246°F), and 249°C (480°F)
140°C (284°F), and 260°C (500°F)
110°C (230°F), and 220°C (428°F)
4
In the Claus Reaction Furnace, a portion ( _____ ) of the H2S is burned to make SO2, this allows for an H2S:SO2 ratio of ________ , which is optimal for the Clause reaction in the converters.* This field is required.
1/4, 3:1
2/3, 1:2
1/3, 2:1
1/2, 1:1
5
For sulfuric chemical equilibrium reactions there are several factors that may influence their completeness and resulting sulfur production. These do NOT include:* This field is required.
Piping size
Temperature of the reaction
Concentration of H2S and SO2
Pressure of the reaction
6
The air demand signal should oscillate between percent on the DCS system. An oscillation larger than this will result in a loss in the overall recovery efficiency of the SRU.* This field is required.
+/- 5.0
+/- 1.0
+/- 0.1
+/- 0.5
7
The reaction furnace temperature should be kept above °C to ensure complete destruction of contaminants like BTEX, Mercaptans, and Hydrogen Cyanide.* This field is required.
900°C (1650°F)
1050°C (2000°F)
1250°C (2280°F)
1550°C (2820°F)
8
In the reaction furnace, a state of deficient air by the Air Demand Analyzer would result in:* This field is required.
excess SO2 produced and an increased ratio
excess SO2 produced and a decreased ratio
less SO2 produced and an increased ratio
excess H2S produced and a decreased ratio
9
The preferred method for reheating in an SRU is ___________ because no extra components are added to the process stream.* This field is required.
Indirect Fired Reheaters
Direct Fired Reheaters
Hot Gas Bypass
Steam Tracing/Steam Jackets
10
When starting up an SRU, the rate of increase in reaction furnace temperature should be , except for the first 300°C after ignition.* This field is required.
20°C (70°F) per hour
40°C (100°F) per hour
80°C (175°F) per hour
100°C (210°F) per hour
11
Name* This field is required.
First Name
Last Name
12
Email* This field is required.Please enter your email to receive your results
example@example.com
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