Hydroxyl Radical Eliminates H2S in Wet Scrubbers & Flue Gases Part 2 - Case Study
This is part 2 of a series of posts on the same topic
Read Part 1 to get an introduction and overview
The Problem
There are many types of chemicals scavengers available to use in a wet scrubber scheme. However, there are several criteria for gas and liquid treatments: 1) rapid rate of reaction, 2) non-reversible reaction path (no reversion to H2S), 3) cost efficiency per mole of H2S removed, and 4) prevention of solids formation (e.g. dithiazine).
The Solutions – Hydroxyl Radical Ions
A variety of chemical oxidizers have been used in wet scrubbers for the removal of hydrogen sulfide. How quickly and efficiently the hydrogen sulfide is oxidized is directly proportional to the oxidant’s oxidation potential. The contact time for hydrogen sulfide to react is inversely proportional to the oxidation potential of the chemical used as the oxidizer. (Note that the higher the oxidation potential, the quicker the reaction.)
Oxidation Potential of Various Oxidizers.
JC 9450 ROS generates hydroxyl radical ions which are one of several reactive oxygen species (ROS) that meets the above criteria. It is a new low-cost technology that is easy to use in a variety of applications and systems. It will oxidize sulfur compounds to sulfur oxide or elemental sulfur. By using a simple tool, the ORP meter, and controlling treatment dosage between +100 mV to +300 mV, we eliminate H2S. JC 9450 ROS reacts quickly and will not permit reversion back to H2S or form precipitants. (Note that JC 9450 will generate elemental sulfur [S0] if the ORP is run above +700 mV.)
The capital cost to set up a system to feed JC 9450 is low. The chemical feed system is simply a metering pump and a chemical storage tank. For a fully- automated system, you would need to install an ORP controller on the return line or in the sump. The ORP controller can be used to monitor the millivolts (mV) and control chemical dosing of JC 9450.
Below is a cost comparison of several treatment systems:
Odor Control Technologies Cost Comparison
All technologies are rated at 10,000 cfm or 1.162 x106 lbs of air per year
* Rated maximum removal rate
** JC 9450 ROS has no limit on the amount of H2S removal
The graph of JC 9450 at 3% demonstrates that 1 mg/l of JC 9450 is required to remove 2.0 mg/l of H2S (by weight). The graph demonstrates that by continuously feeding JC 9450 and maintaining a control range of +100 mV to +300 mV, the system could achieve optimum H2S removal while being cost effective.
Conclusion
Wet scrubbing can be a cost-effective treatment in a non-regenerative application using JC 9450 as a primary oxidant. JC 9450 is easy to feed and simply to monitor. It is a low technology solution for removing hydrogen sulfide and carbon dioxide. JC 9450 can be used to treat natural gas, crude oil, refined petroleum products, anaerobic digester gases, flue gases and others. It is safe to use – non-flammable and non-combustible. It is a part of the new green technology for a safer environment for all.
All technologies are rated at 10,000 cfm or 1.162 x106 lbs of air per year
* Rated maximum removal rate
** JC 9450 ROS has no limit on the amount of H2S removal
The graph of JC 9450 at 3% demonstrates that 1 mg/l of JC 9450 is required to remove 2.0 mg/l of H2S (by weight). The graph demonstrates that by continuously feeding JC 9450 and maintaining a control range of +100 mV to +300 mV, the system could achieve optimum H2S removal while being cost effective.
Conclusion
Wet scrubbing can be a cost-effective treatment in a non-regenerative application using JC 9450 as a primary oxidant. JC 9450 is easy to feed and simply to monitor. It is a low technology solution for removing hydrogen sulfide and carbon dioxide. JC 9450 can be used to treat natural gas, crude oil, refined petroleum products, anaerobic digester gases, flue gases and others. It is safe to use – non-flammable and non-combustible. It is a part of the new green technology for a safer environment for all.
Related products
Jenfitch - Chemical for Hydrogen Sulfide Control in Gas Scrubbers
Related services
H2S Removal Services
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