[Q&A Question 084] 2018.03.25
Thread Content
【Q&A Question 084】March 25, 2018: How to prevent noise in the design of diesel hydrogenation units? The main sources of noise in such units include compressors and their corresponding drive motors, pumps, air coolers, and heating furnaces. The following measures should be taken accordingly to reduce noise. (1) For pumps, safety-rated motors with low noise should be preferred. (2) Low-speed fans are used in the air coolers to keep the noise level below 85 decibels. (3) The heating furnace is equipped with low-noise burners, and the air ducts are fitted with insulation and soundproofing materials. (4) Silencer covers are installed on the large motors used for the hydrogen feed pump and the fresh hydrogen compressor. (5) Silencers are installed at all emission points where noise is likely to be generated. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Due to the limits 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
(1) For pumps, safety-rated motors with low noise should be preferred. (2) Low-speed fans are used in the air coolers to keep the noise level below 85 decibels. (3) The heating furnace is equipped with low-noise burners, and the air ducts are fitted with insulation and soundproofing materials. (4) Silencer covers are installed on the large motors used for the hydrogen feed pump and the fresh hydrogen compressor. (5) Silencers are installed at all emission points where noise is likely to be generated
Answer: The main noise sources inside the unit include: the compressor and its corresponding drive motor, pumps, air coolers, and heating furnaces, etc. The following measures should be taken accordingly to reduce noise. (1) For pumps, safety-rated motors with low noise should be preferred. (2) Low-speed fans are used in the air coolers to keep the noise level below 85 decibels. (3) The heating furnace is equipped with low-noise burners, and the air ducts are fitted with insulation and soundproofing materials. (4) Silencer covers are installed on the large motors used for the hydrogen feed pump and the fresh hydrogen compressor. (5) Silencers are installed at all emission points where noise is likely to be generated.
(1) For pumps, safety-rated motors with low noise should be preferred. (2) Low-speed fans are used in the air coolers to keep the noise level below 85 decibels. ? (3) The heating furnace is equipped with low-noise burners, and the air ducts are fitted with insulation and soundproofing materials. ? (4) Silencer covers are installed on the large motors used for the hydrogen feed pump and the fresh hydrogen compressor. ? (5) Silencers are installed at all emission points where noise is likely to be generated
(1) For pumps, safety-rated motors with low noise should be preferred. ? (2) Low-speed fans are used in the air coolers to keep the noise level below 85 decibels. ? (3) The heating furnace is equipped with low-noise burners, and the air ducts are fitted with insulation and soundproofing materials. ? (4) Silencer covers are installed on the large motors used for the hydrogen feed pump and the fresh hydrogen compressor. ? (5) Silencers are installed at all emission points where noise is likely to be generated
The main noise sources within the device include: the compressor and its corresponding drive motor, pumps, air coolers, and heating furnaces, etc. The following measures should be taken accordingly to reduce noise. ①For pump motors, those with low noise should be preferred. The air cooler is equipped with fans that generate low noise, keeping the noise level below 85 decibels. ②The nozzles and air ducts of the heating furnace are fitted with thermal and sound-insulating materials. ③In the design of the compressor plant, consideration is given to installing soundproof duty booths to reduce noise. ④Silencer covers are installed on the large motors used for the hydrogen feed pump and the new hydrogen compressor. ⑤Silencers are installed at all emission points where noise is likely to be generated.
The main noise sources of the equipment include the compressor and its corresponding drive motor, pumps, air coolers, and heating furnaces. The following measures are taken to reduce noise: A. Low-noise motors are used for the pumps； B. Low-noise fans are used in the air coolers to keep the noise level below 80 decibels ； C. The nozzles and air ducts of the heating furnace are fitted with thermal and sound-insulating materials ； D. Noise dampening covers are installed on the large motors used for the hydrogen feeding pump and the fresh hydrogen compressor ； E. Silencers are installed at all locations prone to noise generation.
1. For pumps, it is advisable to use safety-enhanced motors with low noise levels； 2. Low-speed fans are used in the air coolers to keep the noise level below 85 decibels ； 3. The heating furnace is equipped with low-noise burners, and the air ducts are made of insulating and sound-absorbing materials ； 4. Noise dampening covers are installed on the large motors used for the hydrogen feeding pump and the fresh hydrogen compressor ； 5. Silencers are installed at all emission points where noise is likely to be generated.
The main noise sources within the unit include: the compressor and its corresponding drive motor, pumps, air coolers, and heating furnaces, etc. The following measures should be taken accordingly to reduce noise. (1) For pumps, safety-rated motors with low noise should be preferred. (2) Low-speed fans are used in the air coolers to keep the noise level below 85 decibels. (3) The heating furnace is equipped with low-noise burners, and the air ducts are fitted with insulation and soundproofing materials. (4) Silencer covers are installed on the large motors used for the hydrogen feed pump and the fresh hydrogen compressor. (5) Silencers are installed at all emission points where noise is likely to be generated.
The main noise sources within the device include: the compressor and its corresponding drive motor, pumps, air coolers, and heating furnaces, etc. The following measures should be taken accordingly to reduce noise. ①For pump motors, those with low noise should be preferred. The air cooler is equipped with fans that generate low noise, keeping the noise level below 85 decibels. ②The nozzles and air ducts of the heating furnace are fitted with thermal and sound-insulating materials. ③In the design of the compressor plant, consideration is given to installing soundproof duty booths to reduce noise. ④Silencer covers are installed on the large motors used for the hydrogen feed pump and the new hydrogen compressor. ⑤Silencers are installed at all emission points where noise is likely to be generated.
The main noise sources within the unit include: the compressor and its corresponding drive motor, pumps, air coolers, and heating furnaces, etc. The following measures should be taken accordingly to reduce noise. (1) For pumps, safety-rated motors with low noise should be preferred. (2) Low-speed fans are used in the air coolers to keep the noise level below 85 decibels. (3) The heating furnace is equipped with low-noise burners, and the air ducts are fitted with insulation and soundproofing materials. (4) Silencer covers are installed on the large motors used for the hydrogen feed pump and the fresh hydrogen compressor. (5) Silencers are installed at all emission points where noise is likely to be generated.