Life cycle of a sulphur melting plant
Sulphurnet discusses the importance of a whole life cycle cost analysis at the conceptual design phase when making investment decisions about new sulphur processing facilities.
Tag: Equipment
Improving the performance of the SRU thermal incinerator
Blasch Precision Ceramics reports on the deployment of VectorWalls™ to improve the performance of the SRU thermal incinerator and provide benefits such as lower fuel gas consumption and lower CO2 emissions.
Sulphur run-down liquid level prediction
Sulphur run-down lines are typically sized by referencing past projects and ‘rules of thumb’. Very little analysis is performed to identify the impacts of slope, fittings, valves, etc. It is critical to maintain an open vapour path from the condenser to the sealing device. CSI has observed problems in the field which appear to be caused by undersized run-down lines and has developed a method of predicting the liquid level in a run-down line that considers the most common elements.
Problem No. 35: Urea plant preservation
Preservation covers the method of protection and preventative maintenance carried out on equipment and systems before and after they are put into use. In power plants, fertilizer units and refineries, expensive equipment like turbines, chillers, power generators, boilers, condensers, panels etc. begin to rust and corrode when in storage or during shutdown or even when in operation due to the presence of excess moisture in the air. Proper downtime procedures are extremely important. In this discussion, preservation and its importance is discussed by urea plant experts.
Problem No. 29: Stripper versus decomposer: What is the difference?
A discussion defining the role of the stripper and decomposer in a urea plant and how they differ.
Problem No. 23: CO₂ compressor capacity limitation
The CO2 compressor in a urea plant is often a limiting factor in the urea plant. This discussion shares experiences on how best to debottleneck this unique and interesting high-pressure rotating piece of equipment.
Problem No. 21: Vibrations in the discharge line of the HP reciprocating carbamate pump
In all urea plants, high pressure pumps are used to pump the feedstock ammonia and carbon dioxide to the high pressure synthesis section and in most urea plants carbamate liquid is recycled from the recirculation section to the synthesis. Reciprocating pumps are used for these services and sometimes vibration problems occur in the discharge pipeline. This discussion considers the possible causes and solutions to problem.
Problem No. 19: High pressure pumps – which is better reciprocating or centrifugal?
In every urea plant, high-pressure pumps are used to pump the feedstock ammonia and carbon dioxide to the high-pressure synthesis section and in most urea plants carbamate liquid is recycled from the recirculation section to the synthesis section. This discussion compares the advantages and disadvantages of reciprocating and centrifugal pumps based on operating experiences in the industry.
Problem No. 18: HP stripper passivation air
Austenitic stainless steel can be protected against carbamate corrosion in urea plants by adding oxygen in the urea process. This discussion explores the experiences with different amounts of oxygen in the HP stripper in various urea processes.
Problem No. 17: Loose liner or overlay welding?
A discussion about the differences between loose liners and overlay welding for protection of high pressure equipment in urea plants.