Installation and commissioning

1. The verticality tolerance of tower body installation is 1‰ tower body height, and does not exceed 30mm.

2. The inclination of vacuum pipes, oil inlet and outlet pipes, etc. is installed at 0.001 to prevent condensable substances from flowing back into the deodorization pot and affecting the deodorization efficiency.

3. Water pressure test and water tightness test must be done after installation.

4. Hydrostatic test and water tightness test must be done after disassembly and maintenance.

Operating points

1. The separated gas oil enters the packing section after the oil temperature rises to about 250-260°C after oil-oil heat exchange and heat transfer oil heating. When the oil temperature of the deacidification and deodorization system rises to the specified value, turn on the direct steam for deacidification. The opening degree of the direct steam valve should be adjusted according to the specific situation.

2. The deacidified oil goes through the heat conduction oil heater to make the oil reach about 250°C and enters the top of the deodorization tower.

3. Close the valves of the exhaust pipes of each layer of the deodorization tower. When the oil level in the deodorization tower reaches half, open the inlet valve of the deodorization pump, and then turn on the deodorization pump. After the pressure rises to 0.4Mpa, slowly open the outlet valve to feed oil into the deodorization tower , close the heat transfer oil circulation valve.

4. Turn on the water inlet valve of the fatty acid thermostat and turn on the fatty acid pump. The temperature of the fatty acid thermostat is generally controlled at 40-45°C.

5. After the oil enters the deodorization tower, open the direct steam valve, and when the oil reaches that layer, open the direct steam of that layer.

6. When the oil in the deodorization tower reaches the bottom and the liquid level reaches a certain value, stop the oil supply to the deodorization tower, turn off the gas analysis pump, close the inlet and outlet valves, turn on the deodorization pump, open the valve of the heat circulation pump of the deodorization tower, and turn off the heat transfer oil The self-circulation valve makes the oil return to the deacidification tower to circulate and heat up.

7. When the oil temperature rises to 250°C in the upper layer and 230°C in the lower layer, and the acid value in the test reaches the qualified standard, open the oil outlet valve of the deodorization pump, close the thermal cycle valve, and output oil normally.

Care and Maintenance

1. There should be special personnel to inspect and record the working conditions of the heat transfer oil heating system, direct steam injection system pipes and valves, so as to prevent running, popping, dripping and leaking.

2. Open the vacuum system strictly according to the operating procedures, and empty the sewage before starting and after stopping.

3. Regularly check and clean the scale in the tank, especially the direct steam injection pipe, so as not to block the scale locally.

4. The equipment should be combined with the actual situation of the workshop (factory), and the necessary maintenance system should be established.