Purification Technology Edition: Daily Question [2017-11-8]
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How will the system handle the situation after the ammonia compressor trips? Answer: After the ammonia compressor shuts down, if the system is operating at full load, it should be reduced to half load. The system can still maintain the required standards for the purified gas within 3 hours; care must be taken during this period, as there is a process in which the cooling capacity of the system first remains high before gradually decreasing, and the operating conditions keep changing. It is necessary to maintain a stable liquid level in the system, and the flow rates of various liquids must match the load in order to ensure that the requirements of the methanol washing tower are met. But over time, the temperature of the system solution rises, and when the purity of the gas exceeds the specified limits, it is necessary to cut off the gas supply for treatment. After the ammonia compressor trips, feeding ammonia to the system should be stopped immediately to prevent the ammonia cooler from becoming filled with liquid. Additionally, after the ammonia compressor is restored, the system’s capacity should be increased gradually, as there is a significant delay in the replenishment of cooling capacity; it is necessary to prevent the purification gas levels from exceeding the specified limits due to too rapid an increase in capacity.
After the ammonia compressor shuts down, if the system is operating at full load, it should be reduced to half load. The system can still maintain the required standards for the purified gas within 3 hours; care must be taken during this period, as there is a process in which the cooling capacity of the system first increases and then gradually decreases, with the operating conditions constantly changing. It is necessary to keep the liquid level in the system stable, and the flow rates of various liquids must match the load in order to ensure that the standards set for the methanol washing tower are met. But over time, the temperature of the system solution rises, and when the purity of the gas exceeds the specified limits, it is necessary to cut off the gas supply for treatment. After the ammonia compressor trips, feeding ammonia to the system should be stopped immediately to prevent the ammonia cooler from becoming filled with liquid. Additionally, after the ammonia compressor is restored, the system’s capacity should be increased gradually, as there is a significant delay in the replenishment of cooling capacity; it is necessary to prevent the purification gas levels from exceeding the specified limits due to too rapid an increase in capacity.
After the ammonia compressor shuts down, if the system is operating at full load, it should be reduced to half load. The system can still maintain the required standards for the purified gas within 3 hours; care must be taken during this period, as there is a process in which the cooling capacity of the system first increases and then gradually decreases, with the operating conditions constantly changing. It is necessary to keep the liquid level in the system stable, and the flow rates of various liquids must match the load in order to ensure that the standards set for the methanol washing tower are met. But over time, the temperature of the system solution rises, and when the purity of the gas exceeds the specified limits, it is necessary to cut off the gas supply for treatment. After the ammonia compressor trips, feeding ammonia to the system should be stopped immediately to prevent the ammonia cooler from becoming filled with liquid. Additionally, after the ammonia compressor is restored, the system’s capacity should be increased gradually, as there is a significant delay in the replenishment of cooling capacity; it is necessary to prevent the purification gas levels from exceeding the specified limits due to too rapid an increase in capacity.
After the ammonia compressor shuts down, if the system is operating at full load, it should be reduced to half load. The system can still maintain the required standards for the purified gas within 3 hours; care must be taken during this operation. There is a process in which the cooling capacity of the system first remains high before gradually decreasing, and the operating conditions keep changing. It is necessary to maintain a stable liquid level in the system, and the flow rates of various liquids must match the load in order to ensure that the standards set for the methanol washing tower are met. But over time, the temperature of the system solution rises, and when the purity of the gas exceeds the specified limits, it is necessary to cut off the gas supply for treatment. After the ammonia compressor trips, feeding ammonia to the system should be stopped immediately to prevent the ammonia cooler from becoming filled with liquid. Additionally, after the ammonia compressor is restored, the system’s capacity should be increased gradually, as there is a significant delay in the replenishment of cooling capacity; it is necessary to prevent the purification gas levels from exceeding the specified limits due to too rapid an increase in capacity.
#1. When the ammonia compressor trips, the system first ensures pressure stability and requires the system to reduce its load； 2. Quickly determine the cause of the ammonia compressor tripping, and estimate the time required to restart the ammonia compressor ； 3. Reduce the pressure in the 3 towers ； 4. Open the inlet and outlet valves of the water cooler fully to increase its load ； 5. The unit with liquid nitrogen washing transfers part of the cooling capacity from the liquid nitrogen washing to the methanol washing ； 6 If permitted, the gas-phase vent line of the ammonia cooler can be opened to allow the ammonia cooler to provide additional cooling capacity ； 7 If the ammonia compressor cannot be started in a short time, prepare to shut down the methanol washing unit. #
After the ammonia compressor shuts down, if the system is operating at full load, it should be reduced to half load. The system can still maintain the required standards for the purified gas within 3 hours; care must be taken during this period, as there is a process in which the cooling capacity of the system first increases and then gradually decreases, with the operating conditions constantly changing. It is necessary to keep the liquid level in the system stable, and the flow rates of various liquids must match the load in order to ensure that the standards set for the methanol washing tower are met. But over time, the temperature of the system solution rises, and when the purity of the gas exceeds the specified limits, it is necessary to cut off the gas supply for treatment. After the ammonia compressor trips, feeding ammonia to the system should be stopped immediately to prevent the ammonia cooler from becoming filled with liquid. Additionally, after the ammonia compressor is restored, the system’s capacity should be increased gradually, as there is a significant delay in the replenishment of cooling capacity; it is necessary to prevent the purification gas levels from exceeding the specified limits due to too rapid an increase in capacity.
After the ammonia compressor shuts down, if the system is operating at full load, it should be reduced to half load. The system can still maintain the required standards for the purified gas within 3 hours; care must be taken during this period, as there is a process in which the cooling capacity of the system first increases and then gradually decreases, with the operating conditions constantly changing. It is necessary to keep the liquid level in the system stable, and the flow rates of various liquids must match the load in order to ensure that the standards set for the methanol washing tower are met. But over time, the temperature of the system solution rises, and when the purity of the gas exceeds the specified limits, it is necessary to cut off the gas supply for treatment. After the ammonia compressor trips, feeding ammonia to the system should be stopped immediately to prevent the ammonia cooler from becoming filled with liquid. Additionally, after the ammonia compressor is restored, the system’s capacity should be increased gradually, as there is a significant delay in the replenishment of cooling capacity; it is necessary to prevent the purification gas levels from exceeding the specified limits due to too rapid an increase in capacity.
Answer: After the ammonia compressor shuts down, if the system is operating at full load, it should be reduced to half load. The system can still maintain the required standards for the purified gas within 3 hours; care must be taken during this period, as there is a process in which the cooling capacity of the system first remains high before gradually decreasing, and the operating conditions keep changing. It is necessary to maintain a stable liquid level in the system, and the flow rates of various liquids must match the load in order to ensure that the requirements of the methanol washing tower are met. But over time, the temperature of the system solution rises, and when the purity of the gas exceeds the specified limits, it is necessary to cut off the gas supply for treatment. After the ammonia compressor trips, feeding ammonia to the system should be stopped immediately to prevent the ammonia cooler from becoming filled with liquid. Additionally, after the ammonia compressor is restored, the system’s capacity should be increased gradually, as there is a significant delay in the replenishment of cooling capacity; it is necessary to prevent the purification gas levels from exceeding the specified limits due to too rapid an increase in capacity.
After the ammonia compressor shuts down, if the system is operating at full load, it should be reduced to half load. The system can still maintain the required standards for the purified gas within 3 hours; care must be taken during this period, as there is a process in which the cooling capacity of the system first increases and then gradually decreases, with the operating conditions constantly changing. It is necessary to keep the liquid level in the system stable, and the flow rates of various liquids must match the load in order to ensure that the standards set for the methanol washing tower are met. But over time, the temperature of the system solution rises, and when the purity of the gas exceeds the specified limits, it is necessary to cut off the gas supply for treatment. After the ammonia compressor trips, feeding ammonia to the system should be stopped immediately to prevent the ammonia cooler from becoming filled with liquid. Additionally, after the ammonia compressor is restored, the system’s capacity should be increased gradually, as there is a significant delay in the replenishment of cooling capacity; it is necessary to prevent the purification gas levels from exceeding the specified limits due to too rapid an increase in capacity.
Answer: After the ammonia compressor shuts down, if the system is operating at full load, it should be reduced to half load. The system can still maintain the required standards for the purified gas within 3 hours; care must be taken during this operation. There is a process in which the cooling capacity of the system first remains high before gradually decreasing, and the operating conditions keep changing. It is necessary to maintain a stable liquid level in the system, and the flow rates of various liquids must match the load in order to ensure that the standards set for the methanol washing tower are met. But over time, the temperature of the system solution rises, and when the purity of the gas exceeds the specified limits, it is necessary to cut off the gas supply for treatment. After the ammonia compressor trips, feeding ammonia to the system should be stopped immediately to prevent the ammonia cooler from becoming filled with liquid. Additionally, after the ammonia compressor is restored, the system’s capacity should be increased gradually, as there is a significant delay in the replenishment of cooling capacity; it is necessary to prevent the purification gas levels from exceeding the specified limits due to too rapid an increase in capacity.
After the ammonia compressor shuts down, if the system is operating at full load, it should be reduced to half load. The system can still maintain the required standards for the purified gas within 3 hours; care must be taken during this period, as there is a process in which the cooling capacity of the system first increases and then gradually decreases, with the operating conditions constantly changing. It is necessary to keep the liquid level in the system stable, and the flow rates of various liquids must match the load in order to ensure that the standards set for the methanol washing tower are met. But over time, the temperature of the system solution rises, and when the purity of the gas exceeds the specified limits, it is necessary to cut off the gas supply for treatment. After the ammonia compressor trips, feeding ammonia to the system should be stopped immediately to prevent the ammonia cooler from becoming filled with liquid. Additionally, after the ammonia compressor is restored, the system’s capacity should be increased gradually, as there is a significant delay in the replenishment of cooling capacity; it is necessary to prevent the purification gas levels from exceeding the specified limits due to too rapid an increase in capacity.