Problems with the boiler water in the gasifier water wall
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“During the commissioning phase of the gasifier’s water wall system, it is necessary to determine the amount of boiler water that enters each section of the water walls. This ensures that, while the gasifier is in operation, the flow rate of water into each section of the gasifier remains above the specified value, thereby keeping the vapor content at the outlet of the gasifier’s water walls below 2%. ”How should this sentence be interpreted?
During the commissioning phase of the gasifier’s water wall system, it is necessary to ensure that the vapor content at the outlet of the gasifier’s water walls does not exceed 2%. To achieve this, it is essential to determine the amount of boiler water that enters each section of the water walls, so that during operation the flow rate of water into each section of the gasifier remains above the specified value.
This post was last edited by pyp222 on 2017-6-21 at 21:56. My understanding is that during the commissioning phase of the gasifier, the combustion conditions inside the gasifier are unstable, and overheating may occur. At this time, it is necessary to ensure that the water supply to each section of the water wall meets the specified values; these specified values should be the design values. The water supply to the water wall should not be reduced just because the gasifier is in the startup phase and its load is low. It is necessary to ensure that the water supply to the water-cooled walls is sufficient, so that the vapor content in the water exiting these walls does not exceed 2%; in other words, the temperature of the water leaving the water-cooled walls should not be too high, as a higher temperature leads to a higher vapor content.
Higher temperatures result in a higher moisture content. It’s the air content, yeah. .
It is to trade the energy consumption of the boiler water pump for the safety of the gasifier’s water wall.
As I understand it, the water wall of the gasification furnace is extremely important; the water level in the boiler should never be below the designed value. Additionally, it is necessary to control the temperature of the water exiting the boiler so that it remains not too high, ensuring that the gas content stays within 2%.
By controlling the air content, the boiler’s circulating water removes heat in ‘small amounts multiple times’, thereby reducing the temperature of the furnace walls.