What is the purpose of coal circulation before driving?
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Before driving, or after operating for a while, coal circulation should be carried out. Is there any other purpose besides calibrating the densitometer? How to calibrate a densitometer?
Purpose of the coal cycle: 1. Calibrate the coal flow meter and check for pressure drops in the coal pipeline as well as any blockages in it. 2. Stabilize the amount of coal fed into the gasifier to ensure that the minimum required amount of coal is supplied
The calibration of the coal flow meter is carried out automatically by the pulverized coal flow calibration procedure, and the resulting values can be adjusted by the instrument operator
1. Calibrate the pulverized coal flow meter 2. Simulate coal feeding conditions
Check whether the coal powder density and flow rate meet the requirements for starting up
Our operating procedures state that it is possible to send the coal slurry to the furnace tip for direct feeding.
The main thing is to determine whether the coal powder pipeline meets the conditions for feeding
1. Deliver the coal slurry to the furnace head in advance to ensure that it enters the furnace promptly after being fed in. 2. Build pressure by holding back the flow, thereby creating pressure in the coal slurry pipeline.