Selective extraction flow diagram

The main differences between these processes are the acid concentration and the extraction temperature to effect selective removal of isobutylene. The acid concentration range is 45—65%. Figure 4 shows a simplified flow diagram of the CFR process. 

Extraction and extractive distillation can also be accomplished using N-Forylmorpholin (NFM) as the solvent. Krupp Uhde offers an extractive distillation process for license that employs NFM as the solvent. N-Forylmorpholin is employed in the extractor and in the distillation column to lower the vapor pressure of the aromatics relative to nonaromatics of a similar boiling point. In this way aromatics can be separated from nonaromatics in a very small and simple distillation column. N-Forylmorpholin has properties that make it an excellent solvent for this application. It is highly selective, thermally stable and has a boiling point in the range of the products to be separated. A flow diagram for this extractive distillation process is given in Fig. 3. 

Figure 1. Flow diagram of selective extraction procedure.

Figure 11.17 Flow diagram for the selection of suitable solvents for azeotropic or extractive distillation by direct access to the Dortmund Data Bank or the application of predictive methods.

In essence, a guided-ion beam is a double mass spectrometer. Figure A3.5.9 shows a schematic diagram of a griided-ion beam apparatus [104]. Ions are created and extracted from an ion source. Many types of source have been used and the choice depends upon the application. Combining a flow tube such as that described in this chapter has proven to be versatile and it ensures the ions are thennalized [105]. After extraction, the ions are mass selected. Many types of mass spectrometer can be used a Wien ExB filter is shown. The ions are then injected into an octopole ion trap. The octopole consists of eight parallel rods arranged on a circle. An RF... 

Figure 3.3 is a diagram of a supercritical experiment with CHjOH, and Rgure 3.4 shows an autoclave. Practically, the gel is placed in the autoclave with a sufficient amount of liquid and flushed by a nitrogen flow in order to extract all traces of water contained in air, then the autoclave is closed and subsequently heated at the supercritical temperature selected, generally 10°C higher than the corresponding T After... 

FIGURE 1,10 Schematic diagram of the hybrid flow-through microcolumn extraction/ multisyringe flow injection analysis (MSFIA) system for fractionation and online determination of orthophosphate. SP—syringe pump, MSP—multisyringe pump, SV— selection valve, V—solenoid valves, KR—knotted reactors, D—detector. (Adapted from Buanuam,]. et al. 2007. Talanta 71 1710-1719.)... 

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