EP1848527A1 - Procede faisant intervenir un dispositif de distribution de gaz dans des colonnes - Google Patents

Procede faisant intervenir un dispositif de distribution de gaz dans des colonnes

Info

Publication number
EP1848527A1
EP1848527A1 EP06707019A EP06707019A EP1848527A1 EP 1848527 A1 EP1848527 A1 EP 1848527A1 EP 06707019 A EP06707019 A EP 06707019A EP 06707019 A EP06707019 A EP 06707019A EP 1848527 A1 EP1848527 A1 EP 1848527A1
Authority
EP
European Patent Office
Prior art keywords
column
gas
ribs
device used
used according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06707019A
Other languages
German (de)
English (en)
Inventor
Holger Kleim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EPC Engineering Consulting GmbH
Original Assignee
EPC Engineering Consulting GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EPC Engineering Consulting GmbH filed Critical EPC Engineering Consulting GmbH
Publication of EP1848527A1 publication Critical patent/EP1848527A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/20—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with liquid as a fluidising medium
    • B01J8/22—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with liquid as a fluidising medium gas being introduced into the liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
    • B01J8/12—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by gravity in a downward flow
    • B01J8/125—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by gravity in a downward flow with multiple sections one above the other separated by distribution aids, e.g. reaction and regeneration sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/1881—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with particles moving downwards while fluidised

Definitions

  • the invention relates to a method using a device for uniform distribution of gas in columns in which particles, especially polyamide granules, flow in a packed layer from top to bottom and which are treated with a flow of liquid and gas in countercurrent, according to the features in Preamble of the main claim.
  • a device for controlling a particulate solid stream in a liquid from top to bottom without additional gas flow is presented.
  • the device is characterized by a system of baffle ducts with roller pairs arranged underneath.
  • the control of the solids flow is effected by variable adjustment of the distance of the roller pairs to the baffle lines as a function of the parameters of the particles.
  • the baffle cables consist of parallel channels with a lower horizontal base plate with subsequent inclined side plates and each mounted angle plate and cross-connecting angle strips. Between the side plates and the angle plate in each case a gap is present.
  • DE OS 1 751 164 discloses an apparatus for the thermal treatment of polymer granules with gas without the presence of liquid, wherein in an apparatus with rectangular cross-section, the gas is blown through a plurality of parallel gas introduction internals in the granular layer.
  • the internals are formed at an angle obliquely in accordance with granular flow from top to bottom at an angle. At the lower outlet they are open, the gas can escape into the granulate layer.
  • this device can not be used as gas distribution over the cross section:
  • the upwardly flowing gas would enter in cross-section in the bottom open cross-section of the respective gas introduction fixtures and distribute it locally, without pressure equalization in a necessarily interconnected gas space. A uniform distribution of the gas over the cross section and a targeted turbulence is not possible.
  • the polymer granule layer partially fills the free cross section of the gas introduction internals and, in conjunction with the gas flow, creates instability and.
  • the residence time of this granulate is indefinite.
  • the reactor is designed as a rectangular shaft and is provided for entry of reaction components with roof-shaped internals.
  • the internals each create a free space in the solid layer for entry of the components.
  • the invention has for its object to design a method using a device for evenly distributing gas into a flowing from top to bottom granule bed in which a liquid flows from bottom to top, wherein in a partial region of the column height increased and above the Area of uniform turbulence in the liquid due to the gas flow is achieved.
  • the gas enters the soil at low pressure through the gaps and creates a pressure equalization in the soil. After that, the gas, evenly distributed from the gaps, returns to the bottlenecks. These processes are superimposed (fluctuation) and achieve the sum of a uniform distribution of the gas in the column cross-section. This is especially effective with possibly low gas flow, which would lead to the gas flow in the column room. Without using the trays in the column with specified dimensions one above the other, this gas flow would continue over the entire height of the column.
  • the distribution ribs are bent at the top and bottom at an angle.
  • the angles are adapted to the required conditions of the system granule outlet and gas flow, inlet and outlet side.
  • FIG. 1 shows the floor in plan view
  • the process to be carried out in the column requires a high homogenization of the gas in the zones of action, which is achieved by the soils.
  • bottlenecks b (see Fig. 2) defined by the process in partial vertical sections of the column are required which avoid a convective reflux of the water from top to bottom and cause high turbulence in the water in this partial height section.
  • the gas flowing upwards from the lower zone of action under the drive of the high density difference between gas and water must in each case flow through the defined constrictions of the trays, which have a reduced free area in relation to the column cross section.
  • the gas undergoes in the bottlenecks with a defined width b a spatial compression and strives to enter the smallest pressure difference between bottleneck and united gas space of the soil through the column c in the unified gas space depending on the pressure direction and exit and for a pressure and thus ensuring quantity compensation in the bottleneck.
  • the flow angle ß of the distribution ribs designed so that the gas is optimally drawn in its direction of flow and the gas in the case of local negative pressure in the soil at this point in the column c can occur (back pressure in the bottleneck higher than pressure in the ground).
  • distributor ribs 2 / annulus 1 are provided through the combined gas space for pressure equalization over the entire floor area.
  • the gas discharges from the soil via the column c into the constriction b and flows together with the inflowing from below Gas (deficiency in the rising gas stream) upwards.
  • the outflow angle ⁇ ensures that the gas stream after the bottleneck widens in a homogeneous manner to the column cross-section in conjunction with the dynamic pressure effect by the granulate bed (see Fig. 2) and a homogenization over the column cross section is obtained, differences in the form of possible channel flows of the gas over the height of the column with too small amounts of gas are thus compensated by the arrangement of several soils one above the other.
  • the granules Due to the design of the lower rib at an angle ß, the granules remain confined in a form-fitting manner. This causes no granule-free spaces in the flow of polyamide granules down. Disadvantageous turbulence of the granules, as occurs with a free angle of repose of the granules without positive locking in the gas flow, are avoided, thus improving the quality of the end product.
  • a bottom of the apparatus used for carrying out the method is shown in plan view. It consists of a ring 1 and in this tightly arranged distribution ribs 2.
  • the distribution ribs are supported by web plates 3 with dimensionally stable openings for the distribution ribs.
  • the following effects are achieved, which are necessary for the effective implementation of the method (see Fig. 2): a. the dimensional accuracy of the distances b between the distributor ribs, b. securing the level arrangement of the distribution ribs in the floor, c. the guidance and dimensionally accurate arrangement of the upper rib 4 and the lower rib 5 to ensure the defined values for the bottlenecks b and c.
  • the upper and lower ribs are bent at an angle ⁇ and ß, introduced into the ring 1 and spatially sealed to him.
  • the ring is formed of inner frame 8 and outer frame 9, which is tightly welded with conical rings 10 and 11 (see Fig. 3).
  • the ribs 4 and 5 are also tightly welded into the inner frame 8.
  • the upper and lower ribs have bends 6 and 7 at the ends. Between the bends 6 and 7 there is a gap c. The bends 6 and 7 overlap such that when the column is filled with a liquid, it can not enter the distributor ribs and the interior of the distributor ribs and the ring remain filled with gas.
  • 2 successive trays are arranged as a pair in the plane rotated by 90 ° to each other.
  • the next pair receives a deflection of less than 45 ° to the previous pair, so that the directions of the distribution ribs of the 4 underlying floors do not overlap.
  • the second floor pair is also installed at a defined distance from the previous pair. This arrangement continues for the subsequent groups of 4 trays each. As a result, a point symmetry for the system of distribution ribs in the column is achieved, which makes the equalization of the flow of all reactants optimally uniform.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

L'invention concerne un procédé faisant intervenir un dispositif de distribution de gaz dans des colonnes dans lesquelles des particules s'écoulent du haut vers le bas dans une couche en vrac et gaz et liquides sont guidés vers le haut à contre-courant. Ledit dispositif est composé de niveaux superposés. Le gaz est distribué dans la section transversale de la colonne lors du passage des niveaux. Ces niveaux comportent des étranglements et une chambre à gaz commune composée de rainures de distributeur et d'une chambre annulaire périphérique. Il est possible d'équilibrer la pression du gaz dans le niveau de base par l'intermédiaire de fentes définies dans les rainures de distributeur, destinées à l'amenée et à l'évacuation uniforme du gaz dans la section transversale de la colonne en cas de différences de pression entre les étranglements et le niveau de base suite à diverses quantités de flux de gaz.
EP06707019A 2005-02-17 2006-02-16 Procede faisant intervenir un dispositif de distribution de gaz dans des colonnes Withdrawn EP1848527A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510007289 DE102005007289A1 (de) 2005-02-17 2005-02-17 Verteilerboden für Kolonnen
PCT/EP2006/001418 WO2006087193A1 (fr) 2005-02-17 2006-02-16 Procede faisant intervenir un dispositif de distribution de gaz dans des colonnes

Publications (1)

Publication Number Publication Date
EP1848527A1 true EP1848527A1 (fr) 2007-10-31

Family

ID=36593642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06707019A Withdrawn EP1848527A1 (fr) 2005-02-17 2006-02-16 Procede faisant intervenir un dispositif de distribution de gaz dans des colonnes

Country Status (3)

Country Link
EP (1) EP1848527A1 (fr)
DE (1) DE102005007289A1 (fr)
WO (1) WO2006087193A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006058255A1 (de) * 2006-12-08 2008-06-12 Bühler AG Vorrichtung und Verfahren zur thermischen Behandlung von Schüttgutmaterialien
DE102011113792B4 (de) * 2011-09-20 2015-02-05 Holger Kleim Verfahren und Vorrichtung zur Behandlung von Feststoffen mit feiner Körnung sowie Flüssigkeiten in Behältern

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH283414A (de) * 1949-07-09 1952-06-15 Metallgesellschaft Ag Verfahren und Vorrichtung zur Durchführung von Prozessen, bei welchen fein verteilte feste Stoffe mit Gasen in Berührung gebracht werden.
DE1751164A1 (de) * 1968-04-13 1970-10-01 Glanzstoff Ag Vorrichtung zur kontinuierlichen thermischen Behandlung von schuettfaehigem koernigem Gut
US3930685A (en) * 1974-10-31 1976-01-06 Western States Mining Partners, Ltd. "B" Solids flow control device
US4160647A (en) * 1975-08-02 1979-07-10 Chimkombinat Continuous operation extractor
NL8203577A (nl) * 1984-03-09 1984-04-02 Energy Equipment Engineering B Inrichting voor het met elkaar in contact brengen van een gas- of dampstroom en een omlaag vallende regen van een korrelvormige vaste stof, roostervormige pakking voor een dergelijke inrichting en inrichting voor de overdracht van warmte van een heet gas aan een koud gas middels een tussenmedium van korrelvormige vastestof.
AT398709B (de) * 1990-05-07 1995-01-25 Ernst Dipl Ing Rudelstorfer Anströmboden für wanderbettreaktoren
JP3345969B2 (ja) * 1993-06-18 2002-11-18 東洋紡績株式会社 ポリアミド顆粒から低分子物質を抽出除去する装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006087193A1 *

Also Published As

Publication number Publication date
WO2006087193A1 (fr) 2006-08-24
DE102005007289A1 (de) 2006-10-12

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