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Rapperswil, Switzerland

Koch J.,Sulzer Chemtech Ltd. | Egger D.,Sulzer AG
Sulzer Technical Review | Year: 2013

When extraction columns operate at their limits, fine droplets often may form-the separation of which requires special internals. Sulzer Chemtech improves the performance of extraction columns by using coalescers made of composite materials, and thereby extends the range of application for these columns. Pilot tests in the Sulzer Chemtech test center confirm the process and cost advantages of this solution.

Bachmann C.,Sulzer AG | Gerla J.,Sulzer AG | Yang Q.,Sulzer Chemtech Ltd.
Sulzer Technical Review | Year: 2013

Many industrial processes require pure nitrogen, oxygen, or argon. These gases can be separated from the air by cryogenic distillation. The main challenge of this process is to achieve high separation performance and, at the same time, keep the column heights and the investment costs low. Sulzer has developed a 3-in-1 column internal that significantly reduces the column height and, in addition, allows horizontal transport.

Zuber L.,Sulzer Chemtech Ltd.
Sulzer Technical Review | Year: 2011

The state-of-the-art test centers of Sulzer Chemtech's business unit Process Technology offer customers pilot testing services for a wide range of single units of operation and combinations thereof. A comprehensive number of separation and polymer reaction units, highly skilled test center engineers, and analytical equipment are ali available for tests of systems on a pilot scale. This testing can validate the assumptions made in process design and supports customers with their development projects.

Costa L.I.,ETH Zurich | Costa L.I.,Sulzer Chemtech Ltd. | Storti G.,ETH Zurich | Luscher B.,Robert Bosch GmbH | And 3 more authors.
Journal of Hydrologic Engineering | Year: 2012

Acoustic discharge measurement devices (ADM) based on transit time measurements are widely used to measure water flow rates in channels and closed conduits for hydropower applications. In addition to making velocity and discharge measurements, the ADM simultaneously records the speed of sound and the attenuation of the acoustic pulse through the water-sediment mixture. This information can be used to estimate characteristics of the suspension such as the volume fraction of the sediment. Such information is crucial in hydropower plants because of the negative effects solid particles can have on the equipment. In this work, the Atkinson-Kytömaa model for monodisperse particles is applied to analyze the effect of solid particles and other operating parameters on the sound speed and attenuation in water suspensions. This model has been selected because it is suitable for the interested range of applications. The model has been validated by measurements with different particle material (glass, quartz, calcium carbonate), size, size distribution, shape, and concentration. Moreover, the sensitivity of the model to the particle parameters has been investigated and the critical parameters for monitoring applications have been identified. © 2012 American Society of Civil Engineers.

Sulzer Chemtech Ltd and Beco Engineering Company | Date: 2005-07-19


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