Catalysis problems
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In the catalytic dry gas treatment process, crystallization-induced blockages occur very easily. What are the components prone to forming salts, and what are the reasonable ways to prevent such issues?
Possible reasons for clogging include: 1. High concentration of alkaline solution or presence of alkali, leading to the formation of alkaline crystals in the back passage； 2. The desulfurization effect is poor, leading to the precipitation and crystallization of sulfides. Strengthen operations, control process parameters, and take preventive measures.
Is it possible for salt to form in the pipeline from the stable reabsorption tower to the pressure control unit, before dry gas desulfurization takes place? Everyone, please help analyze it
Catalytic dry gas downstream? Which specific part? Generally, the main components of crystalline salts should be amine sulfides formed from NH3 + H2S. However, in the case of double desulfurization, a specific analysis is required based on the type of double desulfurization process used
Additional note: Liquid in the dry gas can also cause blockages in the dry gas pipelines. Reasons for liquid in the dry gas include excessive absorption and high liquid level in the reabsorption tower.
You are probably referring to the pipeline from stabilization to desulfurization; due to the high flow rate, salt formation generally does not occur there. If clogging occurs, we use high-pressure softened water to push it through, which makes it easy to handle.
Crystallization is a likely possibility; some sulfides, especially in dry gas control valves, often get clogged. It is recommended that the small device use a pipe with a slightly larger diameter for the dry gas line