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Process and apparatus for carrying out multi-phase reactions

A process and reactor technology, applied in the field of process and equipment for performing reactions, can solve the problems of undisclosed molecular conversion chemical reactions, etc.

Inactive Publication Date: 2011-05-11
NEDERLANDSE ORG VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK (TNO)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

No chemical reactions in the sense of molecular transformations are disclosed in this document

Method used

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  • Process and apparatus for carrying out multi-phase reactions
  • Process and apparatus for carrying out multi-phase reactions
  • Process and apparatus for carrying out multi-phase reactions

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Embodiment Construction

[0008] As set forth in WO-A-2006 / 025741 and in P. Naphon and S. Wongwises Renewable and Sustainable Energy Review (10 (2006) 463-490), when a fluid flows through a tortuous channel, especially When flowing through a channel in the form of a spiral, secondary flow occurs due to the action of centripetal force (see figure 1 , where the arrow 1 indicates the direction of the centripetal force, and the arrow 2 is the streamline of the generated secondary flow). These flows are called Dean vortices and are in principle perpendicular to the flow direction through the channel. The strength of these eddies may be related to the Dean number De, which is defined as:

[0009] De=Re·√(D i / D)(1)

[0010] Among them: Re=ρ·υ·D i / η (Reynolds number);

[0011] D. i is the internal diameter of the channel (hydraulic diameter for channels with non-circular cross-section) (m);

[0012] D is the channel's hart-to-hart curvature diameter (m);

[0013] ρ is the density of the fluid (kg / m ...

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Abstract

The invention is directed to a process and apparatus for carrying out reactions with reaction mixtures comprising different physical phases. In a first aspect, the present invention is directed to a process for carrying out chemical reactions comprising a step wherein a reaction mixture comprising at least two different physical phases, wherein at least one of these phases being liquid, is subjected to the action of Dean vortices, which Dean vortices result from said liquid flowing through a channel having at least two curvatures, wherein the channel comprises for at least a fraction of its total length a smooth inner surface.

Description

technical field [0001] The present invention relates to processes and apparatus for performing reactions wherein the reaction mixture comprises different physical phases. Background technique [0002] While for most chemical reactions continuous operation will give the best results with regard to process stability, process control and product quality, there are still many situations where continuous operation is not possible or has serious drawbacks. Examples of such processes are highly exothermic or endothermic reactions, or processes in which the reactants and / or products are in different physical phases. [0003] For continuous processes performed in tubular reactors, mixing in the radial direction is generally poor and may be enhanced by the use of static mixers. However, the use of static mixers has the disadvantage of also enhancing axial mixing, which leads to non-uniform reaction times along the reaction tube, which can lead to lower product quality. Furthermore, ...

Claims

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Application Information

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IPC IPC(8): B01J19/24
CPCB01F2215/0431B01J19/243B01J2219/00029B01J2219/00094B01J2219/00114B01J2219/00166B01J2219/00243B01J2219/00254B01F25/4331B01F25/433B01F31/65B01F35/512
Inventor 安内米克·范德鲁恩斯特拉特彼得·格尔丁克厄尔·劳伦斯·文森特·戈特尔
Owner NEDERLANDSE ORG VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK (TNO)