How to control the temperature of the emergency shutdown furnace during transformation

First, close the intake valve, relieve pressure through the vent pipe, and then displace with nitrogen

During an emergency shutdown, the treatment measures to be taken by the conversion unit should depend on the duration of the shutdown. If the shutdown time is short, it is sufficient to close the inlet and outlet valves and maintain the temperature and pressure in the system; however, attention must be paid to changes in the temperature inside the conversion furnace (which should not drop below 250 degrees), in order to prevent water vapor condensation from affecting the lifespan of the catalyst； If the time is long and the bed temperature may drop significantly, pressure relief and pressure maintenance after nitrogen purging should be employed.

In the event of a sudden power outage or gas supply interruption throughout the plant, an excessive oxygen level in the gas, or a major equipment failure, an emergency shutdown must be carried out. (1)1 Immediately contact the compression and decarburization teams, cut off the gas supply, and close the oil inlet valve, cooler outlet valve, and steam valve ； 2. Upon receiving the signal to reduce flow, gradually decrease the **flow rate, the amount of steam added, and the circulation volume in the hot water tower; at the same time, discharge the backwash water from various equipment ； 3. Upon receiving all stop signals, close the ** valve and the steam inlet valve, shut down the hot water pump, close the make-up water valve of the hot water tower, and maintain the liquid levels in the saturated tower and the hot water tower at the designated level indicators ； The 4-system is in a state of heat retention and pressure maintenance. (2) If the oxygen content in the semi-water gas is too high and the temperature of the catalyst layer rises sharply, it is necessary to immediately notify the gas production and compression units to stop supplying gas, close the oil inlet valve and the cooler outlet valve, and gradually open the vent valve. Once the temperature of the catalyst layer drops to the specified range and the oxygen content is within acceptable limits, gas supply is initiated to commence production.

Close the inlet and outlet valves, as well as the steam valve.

The water-to-vapor ratio is 1.15; is there also a steam valve?

Is there also decarburization and compression in the 6.5MPa transformation?

Based on your data, it should be Linde’s low-temperature methanol wash