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2 Inżynieria Chemiczna i Procesowa

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From process optimization to design optimization a new approach to find an optimal plant design

Strauch U., Brettschneider O., Thiele R., Thielert H., Wozny G.

Inżynieria Chemiczna i Procesowa

2004

T. 25, z. 3/4

2011-2028

In the last decades, planning of chemical plants was the topic of several investigations. Optimization of individual process units was also an important topic in chemical engineering research and practice. The results of these optimizations have led to significant improvements in process design. In the plant lifecycle bid preparation is another important point in plant design. Much research work on cost estimation has been done 25 or more years ago. The quality of the bid has a great influence on the economic success of the company. Therefore, bid preparation must have an important place in the planning process. The use of optimization programs with modern methods of rigorous simulation and computer aided engineering tools could led be significant improvements in the bid preparation process. Nevertheless a qualified and meaningful cost model is still very important for this process. The overall results are a better plant design and an exact estimation of the investment and operating costs. Thus, this approach could help to increase the efficiency and the cost accuracy of about 90% of the real investment and operating cost.

Rate-based model for chemical absorption and desorption developed in a cooperation between the university and the industry in the coke oven gas purification sector

Thiele R., Brettschneider O., Wozny G., Thielert H.

Inżynieria Chemiczna i Procesowa

2003

T. 24, z. 3

355-378

A long-term cooperation situated in the coke oven gas processing sector with several sequel and sub-sequel projects is described. A non-equilibrium model for chemical absorption and desorption of sour gases in columns within the ammonia-hydrogensulphide circulation scrubbing process (AS-process) is presented in detail including the electrolyte system and the enhancement factors used. In addition, the experimental validation in a pilot plant and further experiments are presented, as well as the results of additional sub-projects including foaming, membrane separation and cost optimisation.

Omówiono projekty kolejno tworzone w sektorze obróbki gazu w piecu koksowniczym powstające w wyniku współpracy między uczelnią a przedstawicielami przemysłu. Opisano nierównowagowy model chemicznej absorpcji i desorpcji kwaśnych gazów w kolumnach dla procesu (proces AS) oraz stosowany układ elektrolitów i współczynnik wzmocnienia. Przedstawiono zarówno doświadczalną atestację w instalacji i inne doświadczenia, jak i wyniki dodatkowych badań dotyczących powstawania piany, separacji membranowej i optymalizacji kosztów.