Purification Technology Edition: One Question per Week [Fourth Week of September 2017]
Thread Content
Why is a safety valve installed at the outlet of the cold methanol pump, while the safety valve of the lean methanol pump is installed at the inlet? After the cold methanol pump stops operating, if the chiller valve remains closed, the pipeline between the pump outlet valve and the check valve will experience overpressure due to the increase in methanol temperature, which could damage the equipment; therefore, a safety valve must be installed. A safety valve is installed at the inlet of the lean methanol pump to prevent accidents that could occur due to overpressure. In the event of a sudden power outage, if the check valve at the pump outlet fails, high pressure could enter the low-pressure area at the pump inlet, and such overpressure might lead to accidents; hence, a safety valve is necessary.
After the cold methanol pump stops operating, if the chiller valve remains closed, the pipeline between the pump outlet valve and the check valve will experience overpressure due to the increase in methanol temperature, which could damage the equipment; therefore, a safety valve must be installed. A safety valve is installed at the inlet of the lean methanol pump to prevent accidents that could occur due to overpressure. In the event of a sudden power outage, if the check valve at the pump outlet fails, high pressure could enter the low-pressure area at the pump inlet, and such overpressure might lead to accidents; hence, a safety valve is necessary.
After the cold methanol pump stops operating, if the chiller valve remains closed, the pipeline between the pump outlet valve and the check valve will experience overpressure due to the increase in methanol temperature, which could damage the equipment; therefore, a safety valve must be installed. A safety valve is installed at the inlet of the lean methanol pump to prevent accidents that could occur due to overpressure. In the event of a sudden power outage, if the check valve at the pump outlet fails, high pressure could enter the low-pressure area at the pump inlet, and such overpressure might lead to accidents; hence, a safety valve is necessary.
After the cold methanol pump stops operating, if the chiller valve remains closed, the pipeline between the pump outlet valve and the check valve will experience overpressure due to the increase in methanol temperature, which could damage the equipment; therefore, a safety valve must be installed. A safety valve is installed at the inlet of the lean methanol pump to prevent accidents that could occur due to overpressure. In the event of a sudden power outage, if the check valve at the pump outlet fails, high pressure could enter the low-pressure area at the pump inlet, and such overpressure might lead to accidents; hence, a safety valve is necessary.
After the cold methanol pump stops operating, if the chiller valve remains closed, the pipeline between the pump outlet valve and the check valve will experience overpressure due to the increase in methanol temperature, which could damage the equipment; therefore, a safety valve must be installed. A safety valve is installed at the inlet of the lean methanol pump to prevent accidents that could occur due to overpressure. In the event of a sudden power outage, if the check valve at the pump outlet fails, high pressure could enter the low-pressure area at the pump inlet, and such overpressure might lead to accidents; hence, a safety valve is necessary.
After the cold methanol pump stops operating, if the chiller valve remains closed, the pipeline between the pump outlet valve and the check valve will experience overpressure due to the increase in methanol temperature, which could damage the equipment; therefore, a safety valve must be installed. A safety valve is installed at the inlet of the lean methanol pump to prevent accidents that could occur due to overpressure. In the event of a sudden power outage, if the check valve at the pump outlet fails, high pressure could enter the low-pressure area at the pump inlet, and such overpressure might lead to accidents; hence, a safety valve is necessary.
After the cold methanol pump stops operating, if the chiller valve remains closed, the pipeline between the pump outlet valve and the check valve will experience overpressure due to the increase in methanol temperature, which could damage the equipment; therefore, a safety valve must be installed. A safety valve is installed at the inlet of the lean methanol pump to prevent accidents that could occur due to overpressure. In the event of a sudden power outage, if the check valve at the pump outlet fails, high pressure could enter the low-pressure area at the pump inlet, and such overpressure might lead to accidents; hence, a safety valve is necessary.
After the cold methanol pumps PⅡ0201, PⅡ0202, and PⅡ0203 are shut down, if the chiller valve remains closed, the pipeline between the pump outlet valve and the check valve will experience overpressure due to the increase in methanol temperature, which could damage the equipment; therefore, a safety valve must be installed. A safety valve is installed at the inlet of the low-methanol pump PⅡ0204 to prevent accidents that could occur due to overpressure. In the event of a sudden power outage, if the check valve at the pump outlet fails, high pressure could enter the low-pressure area at the pump inlet, and such overpressure might lead to accidents; hence, the safety valve is necessary.
Answer: For the cold methanol pumps P021601, P021602, and P021603, if the chiller valve does not open after the pumps are stopped, the pipeline between the pump outlet valve and the check valve will experience overpressure due to the increase in methanol temperature, which could damage the equipment; therefore, a safety valve is necessary. A safety valve is installed at the inlet of the lean methanol pump P021605 to prevent accidents that could occur due to overpressure. In the event of a sudden power outage, if the check valve at the pump outlet fails, high pressure could enter the low-pressure area at the pump inlet, and such overpressure might lead to accidents; hence, the safety valve is necessary.
After the cold methanol pumps PⅡ0201, PⅡ0202, and PⅡ0203 are shut down, if the chiller valve remains closed, the pipeline between the pump outlet valve and the check valve will experience overpressure due to the increase in methanol temperature, which could damage the equipment; therefore, a safety valve must be installed. A safety valve is installed at the inlet of the lean methanol pump PⅡ0204 to prevent accidents that could occur due to overpressure. In the event of a sudden power outage, if the check valve at the pump outlet fails, high pressure could enter the low-pressure area at the pump inlet, and such overpressure might lead to accidents; hence, the safety valve is necessary.
After the cold methanol pump is stopped, if the chiller valve remains closed, the pipeline between the pump outlet valve and the check valve will experience overpressure due to the increase in methanol temperature, which could damage the equipment; therefore, a safety valve must be installed. A safety valve is installed at the inlet of the lean methanol pump to prevent accidents that could occur due to overpressure. In the event of a sudden power outage, if the check valve at the pump outlet fails, high pressure could enter the low-pressure area at the pump inlet, and such overpressure might lead to accidents; hence, a safety valve is necessary.