[Q&A Question 046] 2018.02.15
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【Q&A Question 046】February 15, 2018: Why is it necessary to strictly control the liquid level in the drum of a hydrogen production unit? The liquid level in the boiler drum is an important operational parameter in the conversion section; if this level is too low, even minor fluctuations in the water supply can lead to the boiler boiling over, resulting in damage or even explosions. If the liquid level is too high, it can easily lead to steam carrying water, causing the temperature of the converter to drop and salt formation on the catalyst ； Crushing can even cause the temperature to rise excessively, or water entering the furnace can vaporize immediately, leading to overpressure in the system. Unstable liquid levels result in unstable pressure of the steam generated,; therefore, the liquid level in the steam drum must be strictly controlled. The automatic control instruments must be sensitive and reliable, with no false readings allowed, in order to ensure stable production. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Due to the limitations on the number of posts in the “One Question per Day” section, “One Image per Day” has been moved to the registered devices section; you can access it through the directory I posted. For management purposes, if you need to access content from a few days ago, please go to the summary post below to enter the “My Registration Season” event – (Note: This event is currently ongoing in the Chemical Engineering section) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=18978. Summary post of daily questions for the 2018 Chemical Engineering Technology Training section: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888971. Summary post of daily images for the 2018 Registered Equipment section: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888970. Summary post of Q&A questions for the 2018 Hydrogen Production and Hydrogenation Technology section: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888968. Summary post of daily questions for the 2018 LNG Technology Discussion section: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888973. Summary post of Q&A questions for 2017 (updates have started): https://bbs.hcbbs.com/thread-1657793-1-1.html. Summary post of daily questions for 2017 (updates have started): https://bbs.hcbbs.com/thread-1657794-1-1.html. Summary post of daily images for 2017: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1875160. List of daily questions for the 2017 LNG section: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1804162. Summary post of Q&A questions for 2016 (updates completed): https://bbs.hcbbs.com/thread-1597792-1-1.html
The liquid level in the drum is determined through careful design, taking into account normal operation and safety requirements; it is ensured by automatic controls such as pressure regulation, level control, and level indication. Too low a water level renders the underwater orifice plate ineffective; the mixture of steam and water splashes, and the downcomer becomes filled with steam, which disrupts the water circulation. In cases of severe water shortage, if water is added hastily without proper handling, temperature stresses resulting from sudden cooling can cause damage, or excessive vaporization of water can lead to high pressures that result in accidents. If the water level is too high, there is insufficient space for evaporation, which causes steam to carry water with it; in severe cases, this can lead to water hammer in the pipes. Therefore, during the operation of the steam generator, it is essential to strictly control the water level in the drum in order to ensure the safe and normal operation of the evaporator as well as maintain the quality of the steam.
The bubble level in the boiler is an important operational parameter in the conversion unit; if this level is too low, even slight fluctuations in the water supply can lead to the boiler boiling over, resulting in damage or even explosion. If the liquid level is too high, it can easily lead to steam carrying water, causing the temperature of the converter to drop and salt formation on the catalyst ； Crushing can even cause the temperature to rise excessively, or water entering the furnace can vaporize immediately, leading to overpressure in the system. Unstable liquid levels result in unstable pressure of the steam generated,; therefore, the liquid level in the steam drum must be strictly controlled. The automatic control instruments must be sensitive and reliable, with no false readings allowed, in order to ensure stable production.
The liquid level in the drum is determined through careful design, taking into account normal operation and safety requirements; it is ensured by automatic controls such as pressure regulation, level control, and level indication. Too low a water level renders the underwater orifice plate ineffective; the mixture of steam and water splashes, and the downcomer becomes filled with steam, which disrupts the water circulation. In cases of severe water shortage, if water is added hastily without proper handling, temperature stresses resulting from sudden cooling can cause damage, or excessive vaporization of water can lead to high pressures that result in accidents. If the water level is too high, there is insufficient space for evaporation, which causes steam to carry water with it; in severe cases, this can lead to water hammer in the pipes. Therefore, during the operation of the steam generator, it is essential to strictly control the water level in the drum in order to ensure the safe and normal operation of the evaporator as well as maintain the quality of the steam
The liquid level in the drum is determined through careful design, taking into account normal operation and safety requirements; it is ensured by automatic controls such as pressure regulation, level control, and level indication. Too low a water level renders the underwater orifice plate ineffective; the mixture of steam and water splashes, and the downcomer becomes filled with steam, which disrupts the water circulation. In cases of severe water shortage, if water is added hastily without proper handling, temperature stresses resulting from sudden cooling can cause damage, or excessive vaporization of water can lead to high pressures that result in accidents. If the water level is too high, there is insufficient space for evaporation, which causes steam to carry water with it; in severe cases, this can lead to water hammer in the pipes. Therefore, during the operation of the steam generator, it is essential to strictly control the water level in the drum in order to ensure the safe and normal operation of the evaporator as well as maintain the quality of the steam.
The liquid level in the drum is determined through careful design, taking into account normal operation and safety requirements; it is ensured by automatic controls such as pressure regulation, level control, and level indication. Too low a water level renders the underwater orifice plate ineffective; the mixture of steam and water splashes, and the downcomer becomes filled with steam, which disrupts the water circulation. In cases of severe water shortage, if water is added hastily without proper handling, temperature stresses resulting from sudden cooling can cause damage, or excessive vaporization of water can lead to high pressures that result in accidents. If the water level is too high, there is insufficient space for evaporation, which causes steam to carry water with it; in severe cases, this can lead to water hammer in the pipes. Therefore, during the operation of the steam generator, it is essential to strictly control the water level in the drum in order to ensure the safe and normal operation of the evaporator as well as maintain the quality of the steam
When there is a severe water shortage, adding water hastily if not handled properly can lead to damage due to temperature stresses caused by sudden cooling, or accidents can occur as a result of excessive pressure generated by the large amount of water vaporizing.
The liquid level in the drum is determined through careful design, taking into account normal operation and safety requirements; it is ensured by automatic controls such as pressure regulation, level control, and level indication. Too low a water level renders the underwater orifice plate ineffective; the mixture of steam and water splashes, and the downcomer becomes filled with steam, which disrupts the water circulation. In cases of severe water shortage, if water is added hastily without proper handling, temperature stresses resulting from sudden cooling can cause damage, or excessive vaporization of water can lead to high pressures that result in accidents. If the water level is too high, there is insufficient space for evaporation, which causes steam to carry water with it; in severe cases, this can lead to water hammer in the pipes. Therefore, during the operation of the steam generator, it is essential to strictly control the water level in the drum in order to ensure the safe and normal operation of the evaporator as well as maintain the quality of the steam.
If the water level is too high, there is insufficient space for evaporation, which causes steam to carry water with it; in severe cases, this can lead to water hammer in the pipes. Therefore, during the operation of the steam generator, it is essential to strictly control the water level in the drum in order to ensure the safe and normal operation of the evaporator as well as maintain the quality of the steam.
The bubble level in the boiler is an important operational parameter in the conversion unit; if this level is too low, even slight fluctuations in the water supply can lead to the boiler boiling over, resulting in damage or even explosion. If the liquid level is too high, it can easily lead to steam carrying water, causing the temperature of the converter to drop and salt formation on the catalyst ； Crushing can even cause the temperature to rise excessively, or water entering the furnace can vaporize immediately, leading to overpressure in the system. Unstable liquid levels result in unstable pressure of the steam generated,; therefore, the liquid level in the steam drum must be strictly controlled. The automatic control instruments must be sensitive and reliable, with no false readings allowed, in order to ensure stable production.
The liquid level in the drum is determined through careful design, taking into account normal operation and safety requirements; it is ensured by automatic controls such as pressure regulation, level control, and level indication. Too low a water level renders the underwater orifice plate ineffective; the mixture of steam and water splashes, and the downcomer becomes filled with steam, which disrupts the water circulation. In cases of severe water shortage, if water is added hastily without proper handling, temperature stresses resulting from sudden cooling can cause damage, or excessive vaporization of water can lead to high pressures that result in accidents. If the water level is too high, there is insufficient space for evaporation, which causes steam to carry water with it; in severe cases, this can lead to water hammer in the pipes. Therefore, during the operation of the steam generator, it is essential to strictly control the water level in the drum in order to ensure the safe and normal operation of the evaporator as well as maintain the quality of the steam.