Process catalytic distillation

A Catalytic Distillation Process for the One Step Synthesis of Methyl Isobutyl Ketone from Acetone Liquid Phase Kinetics of the Hydrogenation of Mesityl Oxide... 

RATAPAR Not a process but a range of catalysts and catalyst supports using the principle of static mixing. Developed by Sulzer Chemtech since 1991. Used in catalytic distillation processes. 

Additionally, the concept of catalytic SILP materials may be easily combined with several advanced process options providing new opportimities for accomplishing reactions. One attractive approach involves the conductance of consecutive, homogeneous reactions in sequences using several fixed-bed reactors in-series. Another approach involves implementation of integrated reaction-separation techniques using, e.g., SILP-membranes or the use of SILP materials in catalytic distillation processes. 

Yuxiang Z, Xien X. Study on catalytic distillation processes. Part B. Simulation of catalytic distillation processes—quasi-homogenous and rate-based model. Trans IChemE 1992 70 465 470. 

Sundmacher K, Uhde G, Hoffmann U. Multiple reactions in catalytic distillation processes for the production of fuel oxygenates MTBE and TAME analysis by rigorous model and experimental validation. Chem Eng Sci 1999 54 2839-2847. 

Sundmacher K, Hoffmann U. Development of a new catalytic distillation process for fuel ethers via a detailed nonequilibrium model. Chem Eng Sci 1996 51 2359-2368. 

Figure 4.33 Simplified schematic of the Yellowdiesel catalytic distillation process for making biodiesel from high-FFA oils, by integrating the reaction and separation in one reactive distillation column using a solid acid catalyst.

Figure 8.1 Design methodology for developing a catalytic distillation process.

This section deals with the conceptual design of a catalytic distillation process for the esterification of lauric acid (LA) with 2-ethyl-hexanol (2EtH). Laboratory experiments showed that a superacid sulfated zirconia catalyst exhibits good activity over a large interval, from 130 to 180 °C with no ether formation. On the contrary, the catalyst is sensitive to the presence of free liquid water. Raw materials are lauric acid and 2-ethylhexyl alcohol of high purity. The conversion should be over 99.9%, because the product is aimed at cosmetic applications. 

Catacol A catalytic distillation process for petroleum refining, offered by Axens. 

Catstill [Catalytic Distillation] A catalytic distillation process for making high-octane gasoline from off-gases from a catalytic cracker. It can also be used for making a mixture of benzene, toluene, and xylenes from the off-gases from a steam reformer. A demonstration plant was operated at a refinery in the midwestern United States in 1988 to 1989. Developed and offered for license by Chemical Research and Licensing Company, Houston, TX, now CDTech. 

CDTECH/Snamprogetti SpA ETBE Mixed C4 hydrocarbons High-conversion catalytic distillation process for ETBE using C4s and ethanol 5 2000... 

C DTEC H/Sn am progetti SpA TAEE Mixed C5 hydrocarbons High-conversion catalytic distillation process for TAEE production using C5s and ethanol 1 1991... 

The catalytic distillation process of Smith [15], by providing for the fixing of the catalyst in a reactive section of a column between nonreactive stripping and rectification sections, and thereby for the continuous removal of MTBE from the reactants, boosts the conversion of isobutene to well in excess of 99%. The concept is still more economically attractive when OCFS are employed to secure the catalyst in the reactive section— DeGarmo et al. [16]—due to their significantly higher mass transfer efficiency. 

One of the first commercial-scale catalytic distillation processes was that for the production of methyl acetate [17]. In this esterification process the liquid acid catalyst is continuously added to the reactant mixture it finishes up in the bottoms and, following neutralization, in the wastewater from the plant. 

FIGURE 13.6. Preparation of MTBE by a continuous catalytic distillation process... 

Noeres, C. Dadhe, K. Gesthuisen, R. Engell, S. Gorak, A. Model-based design, control and optimisation of catalytic distillation processes. Chem. Eng. Process. 2004, 43, 421-434. 

It is important to include the full life cycle. A good recent example is the case of methyl terf-butyl ketone (MTBE). MTBE can be produced using an efficient catalytic distillation process and it performs well as a fuel additive. However, the combination of three facts [carcinogenic potency, significant solubility in water and difficulty in... 

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