How does borate affect the recovery boiler generating bank or economizer fouling?
No impact is expected on boiler fouling in generating bank or economizer area because the fouling in these areas are normally related to fume which is not expected to contain borate. Sodium borates are not volatile under the recovery boiler combustion environment and therefore are not expected to be present in fume. Some times the fouling of generating bank may be related to intermediate sized particles (ISP) or small carryovers. Although these particles are expected to contain borates, there is no evidence to suggest that borates affect the fouling caused by these particles. No fouling of generating bank or economizer area was found related to the presence of boron during any previous trail/application of partial borate autocausticizing.
