More US Nitrogen Tests Scheduled

By Walter F. Roche Jr.

US Nitrogen LLC, which has just completed one set of compliance tests, is about to undergo additional tests to ensure its operations comply with limits on ammonia and visible emissions ...and still other engineering tests are in the planning stages.
Under a plan submitted in May, a third party, AMP Cherokee Environmental Solutions, will, conduct emissions tests on June 14 and June 15.
In a 15-page filing with the Tennessee Department of Environment and Conservation, the Greene County chemical firm disclosed how the tests will be conducted in compliance with state and federal environmental requirements.
In new filings this week US Nitrogen told TDEC it is also be going to conduct engineering tests that "correlate nitrous oxide emissions with fuel combustion and ammonia injection."
According to the test protocol filed with the state, the tests will establish the rate of ammonia injections that ensure compliance with nitrous oxide limits "and do not result in ammonia slip that exceeds the ammonia emission limit."
According to the protocol, the company is proposing that it be allowed to exceed one condition of its current permit but that would occur only on the testing cycle.
Allowing the deviation, the protocol states would enable US Nitrogen "to collect valid operational data on nitrous oxide generation at various gas flows."
"US Nitrogen does not anticipate any permit emission limits to be exceeded," the protocol concludes.
The two upcoming tests follow additional emission tests performed at the Midway facility earlier this year. A TDEC spokeswoman said those tests were successfully completed.









Monday, May 18, 2020
US Nitrogen Submits Test Plans

By Walter F. Roche Jr.

A Greene County chemical firm has submitted a 15-page document detailing how tests will be conducted to determine if the Midway facility is operating in compliance with permits issued by the Tennessee Department of Environment and Conservation.
US Nitrogen LLC, which manufactures ammonium nitrate and related products, submitted the details of how tests will be conducted to show compliance limits for emissions of ammonia and visible emissions. The tests will be conducted by a third party, AMP Cherokee Environmental Solutions.
The US Nitrogen submission also provides a detailed description of the three step process of manufacturing nitric acid, a key component in the process.
According to the filing the test will determine if the company's pollution control equipment including a selective catalytic reduction unit adequately controls nitrous oxide and related emissions.
The testing document states that the process produces nitric acid by combining nitrogen dioxide and nitrogen tetroxide with water.
Under the permit US Nitrogen is limited to the production of 600 tons of nitric acid per day. Under the test protocol a minimum daily production level of 451 tons.
A series of charts and diagrams show where AMP Cherokee will collect samples to determine compliance.
Contact: wfrochejr999@gmail.com
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