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Method for filling a chamber with a bed of variable density particles

A cavity and filling technology, applied in mixing methods, chemical instruments and methods, transportation and packaging, etc., can solve the problems of not allowing particles, immersion, etc., and achieve the effect of reducing pressure loss and density

Inactive Publication Date: 2009-03-25
PETROVAL SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, the liquid, which must be inert with respect to the particles to be loaded, is not always available at the filling station, or the specific physicochemical properties of the particles do not allow immersion of the particles in the liquid

Method used

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  • Method for filling a chamber with a bed of variable density particles
  • Method for filling a chamber with a bed of variable density particles
  • Method for filling a chamber with a bed of variable density particles

Examples

Experimental program
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Embodiment Construction

[0050] [50] FIG. 1 shows a preparation apparatus for preparing a mixture of two granular solids (A) and (B) in a continuous flow (en flux continu) manner, said preparation apparatus being loaded next to the mixture in A cavity upstream of the compact charging device. The first granular solid material (A), typically a granular catalyst, is introduced into the hopper 4 and the second granular solid material (B) (solid diluent) is introduced into the hopper 2 . Said hopper 2 feeds a dispensing unit (dosimeter) 1 designed to release a defined quantity of solid diluent (B), said quantity being constant or variable over time . The stream of solid diluent (B) that is continuously dispensed by the dosimeter 1 is "injected" through an injector 3 into the stream of granular material (A) that is affected by the effects of gravity and its charge. ) effect comes from the charging hopper 4. The two fluids thus brought together are then intimately mixed by entering a mixer 5, preferably a...

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Abstract

The present invention relates to a method for filling a cavity with a granular solid material with an adjustable charge density, said method comprising the steps of: (a) using a first granular solid material (A) and a solid diluent The cavity is filled with a mixture of agent (B), the solid diluent being a second granular solid material having solubility properties different from that of the first granular solid material (A); and (b) passing a solvent through said fixed bed deposited in said step (a), while eliminating all of said solid diluent (B) and leaving only said first granular solid material (A) in said chamber, wherein said The solvent has no dissolving power for the first granular solid material (A), but has high dissolving power for the second granular solid material (B).

Description

technical field [0001] [01] The present invention relates to methods of filling cavities with granular solids which allow the density of the bed of deposited particles to be adjusted. [0002] [02] More specifically, the present invention relates to the loading of fixed bed reactors (réacteurs à lit fixe) with solid particles in a separated state (à l'état divisé), said reactors being chemical or electrochemical, petroleum Of the petrochemical or petrochemical type, the solid particles may be in the form of beads, granules, columns, tablets, sticks or all other shapes, but are relatively small in size. In particular, the particles may be molecular sieves or catalysts in the form of beads, tablets or, most commonly, extrudates of the single-lobe or multi-lobe type, the size of which depends on the case. And changes, ranging from tens of millimeters to several centimeters. [0003] [03] This follow-up description refers more specifically to this type of application, but the me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/00C10G11/18B01F3/18B01F5/04B01F5/06B01J35/00C10G1/00
CPCB01F5/0619B01F3/18B01J2208/00584B01J8/002B01F5/0451B01F23/60B01F25/3131B01F25/43161B01J8/00C10G11/18B01F25/40
Inventor Y·阿凯P·加利乌P·迪弗雷纳
Owner PETROVAL SA