Overview of emergency treatment plan for explosion vent
Formulate emergency treatment plan for sudden explosion of explosion-proof plate. When sudden explosion of explosion-proof plate occurs, the external supply steam should be replaced immediately to stabilize the rotation speed of the turbine unit and the air compressor, and the pressure difference between the inlet and outlet of the oxidation furnace is maximized. In the positive pressure state, a large amount of rapid reflux of the process gas is avoided as much as possible. Strictly control the absorption system E-101 (first absorption tower), E-102 (second absorption tower), E-103 (bleaching tower) and C-109 (quick cooler) liquid level to avoid high liquid level The increase in system resistance and the slowing of the process gas flow rate accelerate the rapid rise of the temperature of the furnace head.
Before the ignition furnace starts to ignite, the operator should stabilize and control the process conditions such as air compressor speed, gas ammonia pressure and temperature, hydrogen pressure and absorption system liquid level required for ignition. During the driving process of the nitric acid unit, the temperature of the oxidation furnace and the temperature of the superheated steam should be strictly controlled, and the load should be kept slowly and smoothly. After the ignition furnace is successfully ignited until the system is deactivated and the steam is replaced with self-produced superheated steam, the TIC-102 should be adjusted in time and the steam anti-air valve at the outlet of the superheated section should be properly opened to ensure that the steam flowing in the superheated coil will react in time. Travel in the tropics to prevent coil burnout and radiant heat from spreading upwards.
Depending on the air quality of the environment and the use of the raw material gas purification equipment, the oxidizer burner packing should be properly cleaned regularly. In particular, the oxidizing furnace undergoes multiple emergency shutdowns or explosion-proof blasting failures, and the interior of the burner should also be cleaned. For the burner that has been burned red, it should be sanded first to see the original color of the equipment, then thoroughly clean the internal parts of the burner with anhydrous ethanol, then return the clean burner filler as required, and ensure the burner The inner packing is fixed firmly, the density is uniform, and the surface is flat.
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