Formyl morpholine

Formex A process for extracting aromatic hydrocarbons from petroleum reformate, using N-formyl morpholine at 40°C. Developed by SNAM-Progetti. 

Krupp-Koppers (2) A process for separating butane and butene isomers from their mixtures by extractive distillation. The added solvent (Butenex) is a morpholine derivative, possibly N-formyl morpholine. 

MORPHYLANE A process for removing aromatic hydrocarbons from hydrocarbon mixtures by extractive distillation. The added solvent is N-formyl morpholine. The process was developed by Krupp Koppers in the 1960s and by 1994, 22 units had been built. See also MORPHYLEX, OCTENAR. 

A -Formyl morpholine (FM) FORMEX process, Snamprogetti Water is added to the FM to increase its selectivity and also to avoid high reboiler temperatures during solvent recovery by distillation 40° C Perforated-tray extractor, FM density at 1.15 aids phase separation Low corrosion allows use of carbon steel equipment... 

The efficiency of Lewis acid activation depends not only on the reactivity of the bound substrate but also on the equilibrium constant for coordination of the substrate. The equilibrium constants for binding of an amide, a nitrile and phosphates to Co(m) complexes have been measured (Figure 6.5). Formyl morpholine binds to 6 with an equilibrium constant of 0.4 m-1 [35]. Binding of acetamide to 6 could not be detected. The steric effect of the methyl group is expected to significantly lower the binding of acetamide compared with that of formyl morpholine. 

BUTENEX process for separating several C4 components from C4 hydrocarbon streams by extractive distillation, using N-formyl morpholine or a mixture of morphyline derivatives. Piloted by Krupp Koppers in 1987. Now licensed by Uhde. Two plants had been built between 1998 and 2005. 

There are different types of nitrogen compounds that have been identified as benzene feed contaminants. The most common ones are A-formyl morpholine (NFM), A-methyl pyrolidone (NMP), morpholine, monoethanol amine (MEA), diethanol amine (DEA), and acrylonitrile (ACN). Both NFM and NMP are common aromatic extraction solvents that are used to... 

Uber 2- bzw. 4-Lithium-l,3-thiazole lassen sich durch Umsetzung mit 4-Formyl-morpholin 2- bzw. 4-Formyl-l, 3-thiazole gewinnen1342. 

C4-Fraction Pyrolisis benzene, reforming products and other aliphatic/ aromatic mixtures (aromatic substance production [2.32]) Furfurol, dimethyl formamide N-methyl pyrolidine iV-methyl pyrolidine (NMP) (Distapex- process, Lurgi [2.33]) yV-formyl morpholine (NFM) (Morphylane-process), Morphylex process including a combination of extractive rectification and liquid-liquid extraction, Krupp-Koppers [2.34]... 

Morphylex process Extraction of aromatics 1 180-200 N-formyl- morpholine 5-6 1... 

A listing of the major physical solvent gas purification processes that have been or are currently offered for commercial use and the solvents used by each is provided in Table 14-1. Many more solvents have been proposed and evaluated in the past, and the search for superior solvents is continuing. A screening study to optimize physical solvent processes for the purification of gases at high pressure has been pre.sented by Zawacki el al. (1981). In this work a large number of physical solvents were screened and, after selection of two. solvents (the dimethyl ether of tetraethylene glycol and N-formyl morpholine), process schemes were proposed for a variety of applications. 

Since the equilibrium constant is a function of temperature, absorber and stripper desigas must take into account temperature changes that occur as a result of absoqition (or desorption) of components. Zawacki et al. (1981) report using heats of absorption values of 150, 180, and 1,000 Btu/lb for CO2, H2S, and H2O, respectively, for calculating the temperature rise due to absorption in two different solvents (N-formyl morpholine and the dimethyl ether of tetraeth-ylene glycol). They also assumed tray efficiencies of 15 to 20% for absorption in these solvents, and estimated that 50 to 60 actual trays would represent practical column heights. 

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