One Question per Day: Methanol Technology Exchange Edition 20180607
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Learn from the advanced practices of the *Brothers section; there are prizes for correct answers – every response earns a reward, allowing us to grow and mature through these Q&A sessions. Short answer question: The function of the nitrogen seal tank in the torch system. A lift pipe is installed inside the nitrogen-sealed tank; since nitrogen has a lower molecular weight than air, it floats above the lift pipe, protecting the flare system after the flow of gas is interrupted by isolating it from the atmosphere and preventing air from flowing back into the flare tube, thus ensuring that no backflow or explosion occurs during subsequent emissions.
A lift pipe is installed inside the nitrogen-sealed tank; since nitrogen has a lower molecular weight than air, it floats above the lift pipe, protecting the flare system after the flow of gas is interrupted by isolating it from the atmosphere and preventing air from flowing back into the flare tube, thus ensuring that no backflow or explosion occurs during subsequent emissions.
1. Consider safety – methanol toxicity: Is it believed that the evaporated vapors contaminate the working environment? The sealing performance of the floating roof should be reliable; however, over time its sealing effect may weaken, and repair can be carried out in such cases. 2. Consider safety – fire and explosion: It is believed that volatile methanol vapor accumulates in the space between the floating deck and the vault, forming an explosive mixture that could trigger a fire. 3. Consider cost-effectiveness
A lift pipe is installed inside the nitrogen-sealed tank; since nitrogen has a lower molecular weight than air, it floats above the lift pipe, protecting the flare system after the flow of gas is interrupted by isolating it from the atmosphere and preventing air from flowing back into the flare tube, thus ensuring that no backflow or explosion occurs during subsequent emissions.