Where are the initial top injection, regular top injection, and injection of neutralizing and corrosion-inhibiting agents located on the vapor line?
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A reward of 50 gold coins! ! I still haven’t figured out where the initial solidification zone is May I ask where on the vaporization line are the initial top injection, regular top injection, and the injection of neutralizing and corrosion-inhibiting agents located? Also, what should be done if there is no liquid water after injecting water beyond the vaporization line?
It is injected before air cooling; after injection it vaporizes and then, through air cooling and water cooling, returns to a liquid state in order to reduce corrosion of the air-cooling tubes and water coolers.
1. It vaporizes after injection; flushing is not possible without liquid water, and the initial setting zone is located in the air cooler, without moving forward. How to explain it? 2. Should it be injected at the horizontal or vertical section of the vaporization line? Are there any distance requirements?
For a single pair of initial distillation columns and atmospheric columns, the order of injection points for water is neutralizer, corrosion inhibitor, and then water. In particular, the water injection point must be designed to inject before the initial setting zone in order to reduce the occurrence of dew point corrosion. 75% of the injected water is vaporized in order to lower the temperature at the injection point, ensuring that more than 25% of the water remains in liquid form and is injected into the oil and gas pipelines to remove acidic substances such as hydrogen chloride and hydrogen sulfide from the oil and gas. In the case of a single-tank process, the injection point can be located in the horizontal section, while the water injection point can be in the vertical section; of course, it is also possible to place both points in the horizontal section. The greater the distance between them, the better (the horizontal sections at the site are usually quite short). In the case of a two-tank process, injection is done before the hot tank, and water is added before the cold tank.
However, conventional old devices generally use a single-tank process. (It’s just a reflux tank.)
Without water injection, the initial setting zone is within the heat exchanger or at the outlet. Does moving the initial setting zone forward to the pipeline in front of the heat exchanger after water injection mean that is the water injection point? Or roughly where?
If there is no liquid water, then there is no need to add water or corrosion inhibitors. Corrosion in low-temperature areas is mainly acid corrosion, and without liquid water, corrosion cannot occur. The main purpose of adding water is to dilute the concentration of acid in the first drops of condensation water
In particular, the water injection point must be designed to inject before the initial setting zone in order to reduce the occurrence of dew point corrosion. 75% of the injected water is vaporized in order to lower the temperature at the injection point, ensuring that more than 25% of the water remains in liquid form and is injected into the oil and gas pipelines to remove acidic substances such as hydrogen chloride and hydrogen sulfide from the oil and gas.
In particular, the water injection point must be designed to inject before the initial setting zone in order to reduce the occurrence of dew point corrosion. 75% of the injected water is vaporized in order to lower the temperature at the injection point, ensuring that more than 25% of the water remains in liquid form and is injected into the oil and gas pipelines to remove acidic substances such as hydrogen chloride and hydrogen sulfide from the oil and gas.