We present energy and carbon balances and cost estimates based on detailed Aspen Plus process simulations for five plant designs to co-produce dimethyl ether (DME) and electricity from coal. Four of the designs include capture of CO2 for long-term underground storage. We also illustrate the potential DME offers for reducing emissions by facilitating a shift to more energy-efficient vehicles.

In this work, a procedure to simulate the MD (molecular distillation) process for lactic acid purification was developed. The simulation was carried out with the aid of the Aspen Plus Process Simulator. Flash vessel was used to represent the MD process since the software does not present this unit operation. The simulation results with efficiency factors were in agreement with previously report...

In this paper, combustion of char in the riser of circulating fluidized bed was modeled using ASPEN PLUS. Since physical and chemical phenomena are involved in the process, the model integrates the two-phase hydrodynamic sub-model with the reaction sub-model derived from the literature. In the proposed model, the fluidized bed is divided into several sections and the behavior of each section wa...

to evaluate the nutritive value in some lignocellulosic materials, 3 sets of experiments were conducted on aspen, and grape woods. to enhance the digestibility, the woods were treated with 5% naoh. throughout the first trial, chemical composition and digestibility coefficients of dry matter, organic matter and ndf of experimental feeds, ph of rumen, as well as palatability were evaluated while ...

1,3-butadiene is an essential platform chemical for producing rubberlike polymers, which extracted from C4 hydrocarbons that are produced through steam cracking. The current state-of-the-art technology the BASF process uses thermally coupled extractive distillation (ED) followed by two columns. However, requires high temperature heat input, thus cost hot utility and reduces possibility integrat...

Large quantities of fruit wastes are generated during the consumption and processing fruits. The disposal in an environmentally benign way is a challenging task. biochar production from by pyrolysis receiving huge attention because it can alleviate pollution provide supply sustainably. In this study, five waste types—orange peel, banana mango endocarp, apricot kernel shell, date pits—are examin...