Is “boiling point” the boiling point in the sentence?

The first sentence can be translated as: One preventive measure is to purge the container with nitrogen to increase the pressure, thereby keeping the (temperature) above the bubble point or boiling point of the benzene stream at the inlet. Based on the context, \"boiling point\" here should refer to the boiling temperature.

Boiling point refers to the temperature at which a substance boils. Dew point: When a gas mixture is cooled at constant pressure, a first tiny drop of liquid forms at a certain temperature; this temperature is known as the dew point of that mixture at the specified pressure, or simply the dew point. A gas at its dew point temperature is called a saturated gas. The temperature of the gas evaporating from the top of the distillation tower is at the dew point temperature. It should be noted here that the first droplet is not a pure component; it is the liquid phase in equilibrium with the gas phase at the dew point temperature, and its composition is determined by the phase equilibrium relations. It can be seen that gas mixtures with different compositions have different dew points. Boiling point: When a liquid mixture is heated to a certain temperature under a specific pressure, the first very small bubbles appear in the liquid, marking the onset of boiling. This temperature is referred to as the boiling point of that liquid at the given pressure, or simply the boiling point. A liquid at its bubble point temperature is called a saturated liquid, and the temperature of the liquid in the bottom of a distillation column is at the bubble point temperature. It should be noted that this first, very small bubble is not a pure component either; its composition is also determined by the phase equilibrium relations. Boiling point: A liquid begins to boil when its saturated vapor pressure equals the external pressure; the temperature at which this occurs is known as the boiling point of that liquid at the given pressure. Just say it usually. “The boiling point of a substance… refers to the boiling point of that pure substance at an external pressure of 760 millimeters of mercury, also known as the standard boiling point. It should be noted that the boiling point of a pure substance changes with external pressure. As the external pressure increases, the boiling point rises ； The boiling point decreases when external pressure is reduced. For a pure substance, at a certain pressure, the bubble point, dew point, and boiling point are all the same value. For example, at 760 millimeters of mercury pressure, pure water has a bubble point, dew point, and boiling point of all 100°C. For a liquid mixture, boiling begins when the sum of the partial pressures of its components equals the external pressure. Since the partial pressures of the various components change as their contents in the liquid phase vary, it does not have a constant boiling point. The liquid mixture remains in a boiling state across the entire temperature range from the bubble point to the dew point, and the gas-liquid phase compositions vary at different temperatures.

In this sentence, boiling point should refer to pressure, that is, the lowest pressure at which benzene vapor can be liquefied at a certain temperature; nitrogen is used to increase the pressure to above 460 kPa. I’m not sure if the presence of benzene in vapor form has an impact on the process

One precaution is to keep the vessel pressurized with nitrogen above the boiling point of the benzene fill stream. In this case the boiling point of the feed benzene is the Benzene Column Reflux Drum pressure (about 460 kPaG). Generally speaking, boiling point refers to the temperature at which a substance boils. But here it’s the other way around; it refers to the saturated vapor pressure at the current temperature.

The process involves filling the reactor with benzene; the system is already filled with nitrogen before this filling takes place, and venting is also required during the filling process. I believe the boiling point refers to the saturated vapor pressure. If the pressure drops rapidly during filling, it will lead to an increase in benzene vapor, resulting in losses of benzene vapor.

One precaution is to keep the vessel pressurized with nitrogen above the boiling point of the benzene fill stream. In this case the boiling point of the feed benzene is the Benzene Column Reflux Drum pressure (about 460 kPaG). What else could it be besides the boiling point? Sentence 1: It means that the nitrogen pressure in the container should be high enough so that the temperature is above the boiling point of the feed benzene. It must be determined from the context whether it refers to the nitrogen temperature or the vessel temperature being higher than the boiling point of the benzene feed. Sentence 2 cannot be translated literally as: In this case, the boiling point of the benzene feed is the pressure in the benzene reflux tank. It needs to be handled based on the context; first, it’s necessary to figure out what kind of \"case\" is meant by \"In this case\"

I think from a technical perspective, it should be that nitrogen is used to maintain the pressure in the system, so that benzene does not cause flashing once it enters the system； At this time, the boiling point of the fed benzene is the boiling point under the pressure in the benzene reflux tank (the benzene in the reflux tank is in a boiling state)

Then the English for 2nd sentence should be : In this case the boiling point of the feed benzene is at the Benzene Column Reflux Drum pressure (about 460 kPaG).

For easier understanding, the entire passage is as follows: When filling the reactor system with liquid, precautions must be taken to prevent the benzene feed at the bottom of the vessel from mechanically lifting and disturbing the media bed. One such precaution is to maintain pressure in the vessel using nitrogen at a level higher than the boiling point of the benzene feed. In this case, the boiling point of the feed benzene corresponds to the pressure in the benzene column’s reflux drum (approximately 460 kPaG). Another precaution is to fill the vessel at a flow rate that is significantly lower than the normal feeding rate. To this end, a low-diameter filling line is provided near the automatic isolation valve at the inlet of each reactor.

The boiling point is the saturated vapor pressure at the corresponding temperature

The boiling point is the temperature corresponding to a specific saturated vapor pressure, which can be found using a saturated vapor pressure curve

I would like to add here that I believe it is higher than the boiling point of benzene.

Please pay close attention to the question: which one should have a higher temperature, nitrogen or the vessel, compared to the boiling point of the benzene feed?

boiling point means the boiling point

It can be seen from the entire text that, in this processing procedure, it is necessary to prevent flashing when benzene is fed in. To this end, two measures have been taken: 1. Nitrogen is used to maintain the pressure in the tank above the boiling point of the benzene feed; at this point, the boiling point of the benzene feed corresponds to the pressure in the benzene reflux tank—approximately 460 kPaG. 2. The feeding rate is set below that used for normal tank feedings, and a smaller-sized feed line is employed. It is important to note the definition of boiling point: it refers to the temperature at which a substance boils under certain pressure and temperature conditions, with both pressure and temperature playing a role

One precaution is to keep the vessel pressurized with nitrogen above the boiling point of the benzene fill stream. In this case, the boiling point of the feed benzene is the pressure in the Benzene Column Reflux Drum (about 460 kPaG). It is important to note that the container must be pressurized with nitrogen so that its pressure remains higher than the vaporization pressure of the benzene feed. In this case, the vaporization pressure of the benzene feed is the pressure in the reflux tank of the benzene distillation column. (About 460 kPaG) I think the term \"boiling point\" here refers to the temperature at which benzene boils and turns into vapor. Pressurizing with nitrogen is done to keep the pressure inside the container above the vaporization pressure of benzene at the same temperature of the benzene feed, thereby preventing flashing; so can the term \"boiling point\" be understood as vaporization?

It refers to the saturated vapor pressure at the boiling point (temperature). How about calling it “boiling point pressure”? Could there be any ambiguity?