[Soda Ash Knowledge] Question of the Day (156) March 18, 2010
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In the vacuum filtration process, what factors cause a loss of vacuum? Please hide replies; otherwise, no scoring will be given in principle. Edited posts will not be scored. Specific hiding method: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 This month’s question is taken from the book “Question Bank for Technical Workers’ On-the-Job Training – Operators in Soda Ash Production”. Electronic version of the book can be downloaded here: http://bbs.hcbbs.com/thread-13140-1-2.html
1. The liquid level in the alkali tank of the filter is too low, resulting in high vacuum loss. 2. In filters that are not in use, the vacuum valve is not closed properly, which leads to vacuum loss. 3. Poor sealing of the air distribution plate causes vacuum loss. 4. Damaged filter cloth leads to a decrease in vacuum level. 5. Air leaks or scarring in the pipes connecting the filter to the vacuum pump
1. No water supply or insufficient water supply to the vacuum pump. 2. Leakage at the pump’s packing. 3. High water ring temperature
1. The liquid level in the caustic soda tank of the filter is too low, resulting in significant loss of vacuum； 2. For decommissioned filters, the vacuum level is lost due to the vacuum valve not being closed tightly ； 3. Poor sealing of the baffle plate leads to a loss of vacuum ； 4. Damage to the filter cloth causes a decrease in vacuum level ； 5. Pipelines from the filter to the vacuum machine: air leaks into the equipment or scaling occurs.
1. The liquid level in the alkali tank of the filter is too low, resulting in significant loss of vacuum.
2. For filters that are not in use, the vacuum valves are not closed tightly, causing a loss of vacuum.
3. Leakage at the valve seat leads to a loss of vacuum.
4. Damaged filter cloth causes a decrease in vacuum.
5. Air leaks or blockages occur in the piping between the filter and the vacuum pump
2. For filters that are not in use, the vacuum valves are not closed tightly, causing a loss of vacuum.
3. Leakage at the valve seat leads to a loss of vacuum.
4. Damaged filter cloth causes a decrease in vacuum.
5. Air leaks or blockages occur in the piping between the filter and the vacuum pump
Answer: 1. The liquid level in the filter’s caustic soda tank is too low, resulting in significant loss of vacuum； 2. For deactivated filters, failure to properly close the vacuum valve results in a loss of vacuum level ； 3. Poor sealing of the gas distribution plate leads to a loss of vacuum ； 4. Damage to the filter cloth causes a loss of vacuum ； 5. Piping from the filter to the vacuum machine: air leakage or scaling in the equipment. 1# steinback
1. The liquid level in the alkali tank of the filter is too low, resulting in significant loss of vacuum. 2. Loss of vacuum in decommissioned filters caused by improperly closed vacuum valves. 3. Poor sealing of the gas distribution plate leads to a loss of vacuum. 4. Damage to the filter cloth causes a decrease in vacuum level. 5. Piping from the filter to the vacuum machine: air leakage or scaling in the equipment.
The liquid level in the caustic soda tank of the filter is too low, resulting in significant loss of vacuum； Deactivated filter; vacuum loss due to the vacuum valve not being closed properly ； Poor sealing of the rotary valve leads to a loss of vacuum ； Damage to the filter cloth causes a decrease in vacuum level ； Air leakage or scaling occurs in the pipeline from the filter to the vacuum machine
1# Steinback Answer: 1. The liquid level in the caustic soda tank of the filter is too low, resulting in significant loss of vacuum； 2. In deactivated filters, the vacuum degree is lost due to poorly closed vacuum valves. 3. The vacuum degree is reduced because of leaks in the air distribution plate. 4. The vacuum degree decreases when the filter cloth gets damaged. 5. Air leaks or blockages occur in the pipes connecting the filter to the vacuum pump.
Answer: 1. The liquid level in the caustic soda tank of the filter is too low, resulting in significant loss of vacuum； 2. In deactivated filters, the vacuum degree is lost due to poorly closed vacuum valves. 3. The vacuum degree is reduced because of leaks in the air distribution plate. 4. The vacuum degree decreases when the filter cloth gets damaged. 5. Air leaks or blockages occur in the pipes connecting the filter to the vacuum pump. 1# steinback
1. The liquid level in the caustic soda tank of the filter is too low, resulting in significant loss of vacuum. 2. In deactivated filters, the vacuum level is lost due to the vacuum valve not being closed tightly. 3. Poor sealing of the rotary valve leads to a loss of vacuum. 4. Damage to the filter cloth causes a decrease in vacuum level. 5. Piping from the filter to the vacuum machine: air leakage or scaling in the equipment.