![]() The amount of methanol injected must be sufficient to suppress hydrate formation in the aqueous phase and replace methanol “losses” during the vapor phase. Choosing the optimal injection point that is clear of Viton seals and the most advantageous injection method is just as critical as choosing the correct chemical.ĭetermining the right amount of methanol can be challenging because methanol undergoes property changes after injected. The location of the injection point will determine the effectiveness of any chemical injection, including atomization of methanol. Using the right atomizer nozzle for your desired feedrate allows for optimal dispersion and distribution of your methanol. Do we over-inject methanol just to be on the “safe side”?Īnswers to these questions can help determine if you need to reassess your methanol injection plan for this winter.Do we frequently have to increase the methanol rate to battle freezing?.How are we currently injecting methanol?.Did we have freezing issues last year that we need to address this year?.With the potential to introduce the wrong amount of methanol, it is critical to ask these questions before injecting your pipes this year: Finding this balance is crucial to cost-effective and sustainable pipeline freeze prevention.įour Steps for Successful methanol injection ![]() Yet, under-injecting methanol can leave pipes at risk of freezing. These injections carry 0 2, which increases the potential for internal corrosion within pipes if too much methanol is added. However, the question of how much methanol to inject often arises. Low cost injection systems can be utilized.Additionally, these injections provide practical solutions as they are: The most common method of these three is methanol injection due to its economical nature. It’s typically injected into pipes with an injection pump via an atomizer. Methanol Injection - Lowers the freezing point of water and water-based liquids that can make their way into pipelines.These are more often used on regulators and process components with large pressure drops due to the additional temperature drop (see the Joules Thompson effect). ![]()
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