“What does the “water cutting point” refer to? (Catalyst drying)

Given the context, it clearly means that

It refers to the low-point drainage point set in the device; generally, water needs to be cut off or drained during operations such as steam purging and catalyst drying, as you mentioned.

This term also appears in our technical Q&A sessions, and after analysis by our team, we all agreed that in fact, \"cutting water\" means dehydration! Hehe

Weren’t your technical Q&A sections written by you yourselves? I encountered it while translating from Chinese to English; it’s impossible to translate without understanding the meaning in Chinese. . “\"Dehydration\" is easy to understand for both professionals and laypeople.

Cutting water, releasing water, draining water, and discharging sludge mean the same thing. But in production, it is generally referred to as cutting water. Below is a catalyst drying procedure to help you understand and translate it more easily: Catalyst Drying Procedure (1) Nitrogen purging: After the catalyst has been loaded, activate the system’s vacuum pump to reduce the vacuum level in the hydrogen system to 59.9–66.6 kPa. Maintain this vacuum level for 2 hours, checking for any leaks in the system; a decrease in vacuum level of no more than 4.0 kPa is considered acceptable. (2) Start the new hydrogen engine. (3) Raise the pressure of the hydrogen system to 2.0 Mpa in a gas-tight manner at a rate of 1.5 Mpa/h. After achieving airtightness, the system pressure is reduced to 1.0 MPa, and K2102 is used to establish a nitrogen circulation within the reaction system. After 1 hour, sampling is carried out to analyze the oxygen content in the gas; if the oxygen content is not within the acceptable range, the compressor K2102 must be stopped, the system pressure reduced to 0.05 MPa, and then nitrogen is introduced into the system to raise the pressure back to 1.0 MPa. K2102 is then started again, and the cycle is repeated for 1 hour before another sample is taken for analysis. This process is continued until the oxygen content in the system is within the acceptable range, that is, below 0.5%. After the system pressure is raised to 1.5 MPa, a nitrogen circulation is established. Heater F2101 was ignited in accordance with the procedures. The temperature was raised at a rate of 20°C/h to 120°C at the reactor inlet, and the system was allowed to stabilize and circulate for 1.5 hours. Maintain the temperature at 160°C for 12–24 hours, and every 2 hours drain the water, weigh it, and record the values, until water cannot be drained for several consecutive times at both high and low temperatures; meanwhile, cooling begins once the reactor outlet temperature TIA3156 reaches 130°C. Nitrogen circulation cooling process: Circulating nitrogen is used to cool the system until the temperature at the highest point of the bed drops below 120°C, thereby completing the catalyst drying stage. Gas-to-agent ratio: >600:1 (a higher gas-to-agent ratio is preferable as long as the compressor can achieve it). Work with the technician to conduct verification checks, and address any issues found promptly. Precautions during the catalyst drying stage: (1) During the drying of the catalyst, the maximum temperature in the catalyst bed shall not exceed 160℃ ； (2) Constant temperature at 160℃ time ≮12h ； (3) During the nitrogen circulation cooling phase, it is necessary to ensure that the temperature at the highest point of the bed layer remains below 150°C; simultaneously, it is important to verify the O2 content in the samples taken from all sampling points in the system