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Stamicarbon Corrosion in Urea Plants

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Stamicarbon Full Life Cycle Services

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Stamicarbon service - how to advance your plant performances moscow 2017

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Simple characterization of requested services o Ensure a constant and good product quality o Optimal process operation and control of the urea plant o Maintain the plant and keep hardware in optimal c

ondition o Comply with safety and (new) environmental regulations

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Stamicarbon Services past present and future

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The Stamicarbon services portfolio has been developed over time and gradually more services and products have been added. In this paper, the Stamicarbon services will be presented, based on the expert

ise and strength of Stamicarbon technology. 

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The Full Lifecylce Philosophy

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Tube leakage evaporation heater. The effects and root cause. An experience by Kafco, Bangladesh

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After the synthesis of urea and recovery of the non converted ammonia and carbon dioxide a urea solution remains. To condition this solution for the finishing section, being granulation, crystallizati

on or prilling, it needs to be  If the heater is mechanically damaged (leaking tube heat exchanger) also product can contaminate the steam/condensate system and cause corrosion in the carbon steel lines and equipment.

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Urea process simulator

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Motivation for investing in OTS • Less unplanned shutdowns • Faster recovery time if trips do occur • Less damage to equipment • SAFETY • Higher on-stream time = $$$

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Urea reactor dome liner replacement

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Repeated leaks in the Dome of Agrium’s reactor at Carseland were forcing unplanned shutdowns at intervals of less than 1 year. In December of 1992 there was a liner leak at a tray clip. Based on inspe

ctions of the reactor CNO (Carseland Nitrogen Operations) believed that there was only 3mm of original material protecting the carbon steel shell. At the end of 1995 Carseland ordered new liner material for the top dome and the cylindrical section approximately 1 m below the head. Carseland consulted Stamicarbon and potential suppliers of liner material and installation expertise. Carseland decided that for reasons of cost and time it was best placing a new liner overtop of the existing liner in the dome.

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ADVANCE COAT to improve dynamic strength of prills

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Advantages from client's perspective: • Logistic costs are lower • More selling product in range due to better granulometry • Environmental and Health advantages • Longer storage possibilities (le

ss caking, consolidation strength)

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How to protect your urea prills against deterioration

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Most fertilizers have a tendency to form lumps or agglomerates during storage and transportation, which is commonly referred to as caking. A quality fertilizer should meet not only the specified nutri

ent requirements, but also high standards in respect of its physical properties. This paper will focus on the causes of caking, like formation of crystal bridges serving as contact points between particles and formation of capillary adhesion forming adhesive contacts. Other subjects that will be discussed are: approaches to cake prevention, the action of anti-caking agents, and the methods of applying them. Finally, a new method of rendering prilled urea cake-resistant, based on coating with a novel, high-quality Stamicarbon coating agent named ADVANCE COAT™ Prill Strength, will be introduced. 

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Rotoform urea pastilles - The Sustainable Premium Urea product

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Round table discussion new generation trays

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Urea storage and handling, let's keep caking in the kitchen

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Reviewing the history of urea technology and Urea technology development, we may conclude that from the beginning of commercial Urea Technology development and Urea Production until now much attention

has been given to developing and optimizing the synthesis- and recycling-section in the urea plant, that inthe last decade increased attention has been given to developments and optimizations regarding Urea shaping technology (granulation and prilling), whereas over the entire Urea history, also much attention has been given to storage and handling, indicating the importance of product quality, storage and handling. The most important problems occurring in Storage and Handling are directly or indirectly related to (results of) caking, like lump-formation and dusting. Therefore the mechanism of caking of Urea has been made the subject of a paper because we realize that large efforts and considerable amounts of money can be involved with the consequences of caking. In this paper the mechanism of caking via water sorption and desorption is discussed. Especially the caking, spreading through a heap of Urea, observed even in Urea of good quality will be highlighted. This is often caused by moisture migration. The mechanisms of caking are then explained by discussing some examples from practice.

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Would Urea enhanced fertilizers be a profitable and viable innovation for Urea producers

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Bulk blending of fertilizer is an alternative compounded NPK fertilizer. Granular urea has proven to be a good feedstock for bulk blending. Bulk blending of fertilizer has been widely applied in

the Americas due to mechanization of agriculture. In order to blend a high quality of granular fertilizer it is very important to produce a stable blend where no segregation of mixture occurs. For good bulk blending quality granules containing nutrients like P, K and/ or S are required. For such granules a premium is paid in the market. In some Asian countries like India bulk blending of fertilizers is not an alternative to compound fertilizer because bulk blending fertilizers is forbidden due to quality control issues in these countries.

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Benefits of optimizing basic control loops

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It is axiomatic that a stable process consumes less energy and needs less maintenance, thus lowering operating costs and improving profitability.  The optimization should be carried out by people

who have a thorough knowledge of the dynamic behavior of the process and the spectrum of algorithms which can be implemented in the process control system. The optimization process itself consists of several steps, like setting up a controller performance monitoring system, determining the root cause of poorly performing control loops, fixing potential hardware problems, and tuning the controllers with the proper algorithm and parameters. These well-tuned basic control loops can also act as a solid backbone for model-based advanced process control software like the Stamicarbon EVOLVE OPTIMIZER™, which offers extensive possibilities for stable plant operation and further enhanced economic benefits.

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How rigorously plant modeling can advance your urea business

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This paper gives an overview on Stamicarbon’s capabilities and products related to urea plant modeling. These models are typically implemented in the ADVANCE and EVOLVE life-cycle of a urea plant. In

the LAUNCH phase, grass root plants can apply the models to optimize consumption and emission figures.  It allows urea producers to stay competitive with production improvements, monitoring and detection, staff training and full lifecycle support. Further, feedback will be given on the EVOLVE OPTIMIZER™ project at OCI in the Netherlands. This has been in operation since 2012.

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Zero Waste Urea production

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In most industrial production processes and thus also in fertilizer production processes in general there are side products which cannot be further processed. Examples of such side streams are product

s that are out of specification, intermediates and by-products, all of which normally end up as waste. These waste streams are either dumped in landfills, incinerated, or otherwise wasted, putting a burden on the environment and resulting in a negative economic impact for fertilizer producers.

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ISO 9001_2015 certificate

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Certificate SA 8000 2014

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Stamicarbon Corporate brochure

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Stamicarbon Corporate brochure

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Stamicarbon Corporate Brochure

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Stamicarbon Corporate Brochure

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Stamicarbon Corporate Brochure

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Stamicarbon Corporate Brochure

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Stamicarbon Reference List Aug 2019.pdf

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Stami Urea Brochure

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