What is the effect of methane on platinum nitrate grids?
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I wonder if anyone among my colleagues has conducted in-depth research on the effect of methane on platinum nitrate meshes? Looking forward to a reply
Can methane be present in the nitric acid production process? If it exists, where does this methane come from?
When the vent gas from the top of the low-pressure ammonia synthesis sphere tank is easily utilized for nitric acid production after depressurization, its ammonia content is around 97%, with 1–2% methane present, as well as a small amount of hydrogen. After trying it out, we haven’t encountered any problems so far.
The presence of methane and hydrogen reduces the conversion rate of ammonia, that is, its oxidation rate; the purity of our ammonia is usually over 99%
It’s not in the ammonia. The wastewater treatment plant that our company has just built produces methane and is located near our nitric acid facility. Recently, the ammonia consumption has not been as good as before; I wonder if anyone here has conducted in-depth research on this
The purity of ammonia we require is over 99.5%. Will the presence of flammable gases such as methane and hydrogen have any impact on the platinum mesh?
It should have little impact on the platinum mesh; mainly, these two substances can react with oxygen without a catalyst, and they compete with ammonia for the oxygen in the air, resulting in a decrease in the ammonia conversion rate
As long as it does not cause temporary or permanent moderate damage to the platinum mesh, a small amount of methane in the ammonia-air mixture that enters the platinum mesh has no adverse effect on it. The most important thing is to ensure that the ammonia-to-air ratio remains within the allowable operational parameters; in addition, attention must be paid to the ammonia oxidation temperature to prevent the mesh from overheating and getting damaged.
As long as it does not cause temporary or permanent moderate damage to the platinum mesh, a small amount of methane in the ammonia-air mixture that enters the platinum mesh has no adverse effect on it. The most important thing is to ensure that the ammonia-to-air ratio remains within the allowable operational parameters; in addition, attention must be paid to the ammonia oxidation temperature to prevent the mesh from overheating and getting damaged.