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STAMICARBON‘S DUAL PRESSURE NITRIC ACID PROCESS WITH ENERGY RECOVERY AND UAN INTEGRATION

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INTRODUCTION: NOT A NEW COMER! • Stamicarbon licensed nitric acid technologies • Between50’s-80’s Stamicarbon licensed>40 plantsworlwide • 20 Stamicarbon HNO3plants stillin operation

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How green is the Stamicarbon Urea process

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The Stamicarbon urea process, like other processes, unfortunately emits gaseous (ammonia) emissions due to the fact that the urea reaction is an equilibrium reaction. In principle, emission problems c

an be solved in two different ways, either with an in–line and/or with an end-of-pipe solution. The combination of the equilibrium reaction and the presence of inerts make an in-line solution not feasible. Therefore end-of-pipe solutions to eliminate ammonia emissions in both urea melt and finishing plants are still needed to obtain a green and environmentally sustainable process. This paper covers the different available end-of-pipe solutions such as absorbers (including emergency absorber), acidic scrubbers and flares. These options have a wide range of operating windows for further optimization and achieving optimum environmental performance. Flaring reduces the ammonia emission by converting the ammonia into carbon dioxide and nitrogen oxides (NOx). Therefore, the environmental impact evaluation - after implementation of the new end-of-pipe solution - needs to be reviewed, especially when applying continuous emission flare because the environmental impact of these new type emissions are not more tolerable than ammonia emission. Stamicarbon believes that a green urea process combines optimum process conditions with a good choice of end-of-pipe solutions. The available alternatives for end-of-pipe solutions target an optimum “Triple P” balance, i.e. the balancing between financial-economical achievements (profit), environmental impact (planet) and public acceptance (people).

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How green is the Stamicarbon Urea process

Registered users

The Stamicarbon urea process, like other processes, unfortunately emits gaseous (ammonia) emissions due to the fact that the urea reaction is an equilibrium reaction. In principle, emission problems c

an be solved in two different ways, either with an in–line and/or with an end-of-pipe solution. The combination of the equilibrium reaction and the presence of inerts make an in-line solution not feasible. Therefore end-of-pipe solutions to eliminate ammonia emissions in both urea melt and finishing plants are still needed to obtain a green and environmentally sustainable process. This paper covers the different available end-of-pipe solutions such as absorbers (including emergency absorber), acidic scrubbers and flares. These options have a wide range of operating windows for further optimization and achieving optimum environmental performance. Flaring reduces the ammonia emission by converting the ammonia into carbon dioxide and nitrogen oxides (NOx). Therefore, the environmental impact evaluation - after implementation of the new end-of-pipe solution - needs to be reviewed, especially when applying continuous emission flare because the environmental impact of these new type emissions are not more tolerable than ammonia emission. Stamicarbon believes that a green urea process combines optimum process conditions with a good choice of end-of-pipe solutions. The available alternatives for end-of-pipe solutions target an optimum “Triple P” balance, i.e. the balancing between financial-economical achievements (profit), environmental impact (planet) and public acceptance (people).

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Urea Producers & Project Development

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1. Historical review presents in the region 2. Stamicarbon philosophy aplication: Full Life-Cycle 3. Successful cooperation practices 4. Project Development 5. New business development: O&M an

d Training 6. Conclusions

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Stami Nitric Acid Dual Pressure Design

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Brochure Stami Nitric Acid Dual Pressure Design.

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UAN design

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Brochure Stamicarbon’s UAN technology and Protect UAN

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SAFUREX™ - It was not a dream

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This story called: Safurex®, it was not a dream, gives a follow up about the behaviour of Safurex or better, corrosion that not has occurred in Safurex equipment after being exposed to urea over a lon

ger time. We also deal with how both Stamicarbon and Sandvik handle Safurex, how to deal with spare material and even spare equipment.

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EVOLVE Series upgrade your urea plant

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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

pool reactor

LAUNCH MELT™ Pool Condenser & Pool Reactor Design

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Our CO₂ stripping process designs that simplifies the plant's overall design.

ADVANCE HSE Products and Services

MicroMist Venturi scrubbing

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Sources of urea dust in the air exhaust of a granulator: •Fine dust coming from the crushing-process of coarse granules •Evaporation/sublimation from urea melt (Isocyanicequilibrium) CO(NH2)2-> H

NCO + NH3 •Atomization Sprayer losses, however minimal with Stamicarbon film spray nozzles •Attrition

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optimizer

ADVANCE INSIGHT™ Plant Optimizer

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Stamicarbon's real time urea process simulator for melt and granulation plants.

process monitoring

ADVANCE INSIGHT™ Process Monitor

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Our Process Monitor is a steady state on-line process model that includes Stamicarbon's state-of-the-art H&M balance, thermodynamic and kinetic urea models.

thermal

ADVANCE DESIGN Thermal Treatment Design

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Stamicarbon's unique proprietary solution to design urea melt plants with zero ammonia emission in an environmental and cost friendly way.

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RECYCLE OF AMMONIUM SALTS FROM ACIDIC SCRUBBING

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What amounts are we talking about ? For a state-of-the-art world-scale plant of 3500 MTPD (3850 STPD)plant: •Ammonia emission from absorbers in melt: 10-12 kg/h (22-26 lb/h) •Ammonia present in urea

melt feed to finishing: 75-125 kg/h (165-275 lb/h) What can we do about this ? •Reduction of the ammonia emissions via scrubber technologies •More specifically we will see scrubbing with aqueous acid solutions is used broadly

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HP reactor vessel wall breech due to loss of passivation at medicine hat

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The loss of the passivation layer on the liner led to the corrosion.  The loss of passivation occurred during the 22 hour period between the 2nd and 3rd startups, when the dissolved oxygen in the

stagnant process liquid was driven off by generation of heat in the R-101.  The heat was generated when CO2 leaked into the synthesis loop through a passing isolation valve, and the CO2 reacted to form carbamate.  The carbamate reaction generated the heat.  The de-oxygenated process liquid then destabilized the passivation layer and stripped it away, leaving the unprotected stainless steel liner exposed to the highly corrosive carbamate following the 3rd startup. The pinhole and pits were repaired, and the Plant resumed production on July 28th.

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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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A specialty SAFUREX™ for HP stripper tubes

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This paper presents a historical overview of the corrosion behavior of the Safurex® HEx tubes in HP strippers and gives an account of the development of the new specialty grade. 

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Stamicarbon Reference List Aug 2019.pdf

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Stami Specialties Controlled Release Fertilizer Design

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Stami Specialties Controlled Release Fertilizer Design leaflet.

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AdBlue Technologies

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DEF/NOx reduction, AdBlue Technologies leaflet

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The Low elevation technology AvancoreÆ applied in the Tierra del Fuego project

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One of the main papers presented during the 11th Stamicarbon symposium of 2008 was titled “Stamicarbon‟s new urea plant concept“ and presented the new Low Elevation Technology Avancore®. Main characte

ristic of the Avancore® technology is a vertical r...

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