Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
  • B01D46/32—Particle separators, e.g. dust precipitators, using loose filtering material the material moving during filtering
  • B01D46/38—Particle separators, e.g. dust precipitators, using loose filtering material the material moving during filtering as fluidised bed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
  • B01D46/32—Particle separators, e.g. dust precipitators, using loose filtering material the material moving during filtering
  • B01D46/34—Particle separators, e.g. dust precipitators, using loose filtering material the material moving during filtering not horizontally, e.g. using shoots
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
  • B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
  • B01D53/08—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds according to the "moving bed" method
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
  • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
  • B01D53/0407—Constructional details of adsorbing systems
  • B01D53/0446—Means for feeding or distributing gases

Definitions

• the invention relates to a moving bed reactor with a moving-bed flow in which the bulk material passes through the reactor from top to bottom and is laterally delimited by main blinds, through the openings of which the gas flow is passed, secondary blinds being able to be assigned to the main blinds, which are aligned parallel to the main blinds.
• Such moving bed reactors have become known, for example, from EP 0 198 133 B1.
• the main blinds used in these moving bed reactors consist of inclined blind units and are gas-impermeable over their entire surface. The total amount of gas flows through the gaps between the main blind units. The resulting increase in gas velocity in this area often leads to undesired bulk material discharges.
• the invention has for its object to prevent the discharge of bulk particles.
• the undesired discharge of bulk material particles is completely prevented by the gas-permeable retaining and guide elements for the bulk material particles which are assigned to each blind unit of the main blind on the outflow side. Since the bulk of the gas flows through the openings of the gas-permeable retaining and guiding element, a swirling up of the bulk material and its discharge from the intermediate spaces of the main blind units are reliably avoided. Further improvements result if the downstream side blind units are assigned to the downstream main blind units, whereby both the outflow of the bulk material particles in the area of the main blinds is improved and the flow resistance of the gas flow is further reduced.
• FIG. 1 shows a moving bed reactor with main blinds, the blind units of which are equipped with gas-permeable retaining and guiding elements.
• Figure 2 partial sections of the object of Figure 1 in one and 3 cross-section and in a longitudinal section.
• FIG. 7 different arrangements of main blind units with gas-permeable retaining and guiding elements, each of which is associated with secondary blinds of different designs.
• Figure 11 is a schematic diagram of the effect of the gas-permeable retaining and guiding element on the slope behavior of the bulk material in the space between the main blind units.
• FIG. 1 shows a cross section through a moving bed reactor 1, which is supplied with a bulk material 3 via a feed container 2, which bulk material continuously passes through the moving bed reactor 1 from top to bottom. The discharge takes place via a discharge device 4.
• the moving bed reactor is laterally a gas feed chamber
• the chambers 5 and 6 are separated from the moving bed 11 by a main blind 12 on the upstream side and a main blind 23 on the outflow side, which are formed from blind units 17 between which gas passages 18 are arranged.
• the downstream main blinds 23 can be connected upstream of the downstream side blinds 13, which are formed from blind units 19.
• Gas-permeable retention and guide elements 14 are assigned to each main blind unit 17 on the outflow side, as a result of which undesired discharge of bulk particles into the gas discharge chamber 6 is reliably avoided.
• the main gas flow which is indicated by a flow arrow 16 flows through the gas-permeable retaining and guiding element 14 into the intermediate space 21 between the main blind units 17, without bulk material being carried along by the embankment 22 by the gas flow .
• FIG. 3 shows a side view of two blind units 17 according to FIG. 2, from which the, in this case slotted sieve, configuration of the gas-permeable retaining and guide elements 14 can be seen.
• FIGS. 4, 5 and 6 show, by way of example, other possible arrangements for the gas-permeable retaining and guiding elements 14 on the blind units 17.
• the gas-permeable retaining and guiding element 14 is attached to the end of the main blind unit 17 in an inclined manner in FIG.
• the gas-permeable retaining and guide element 14 can also be attached laterally to the main blind units 17, the direction being vertical (FIG. 5) or inclined (FIG. 6).
• the main blind units 17 can be associated with secondary blind units 15 and 19, respectively, which additionally have guiding and pressure relief functions with regard to the bulk material, as this is illustrated, for example, in FIG.
• the gas flow arrow 16 shows the unobstructed main gas flow path.
• the bulk material flow arrow 20 illustrates that in the vicinity of the blinds an unimpeded flow of bulk material occurs from top to bottom, since the secondary blind unit 15 acts as a pressure relief body from the bulk material pressure.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Analytical Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6374667

Family Applications (1)

Country Status (2)

Cited By (1)

Families Citing this family (1)

Citations (4)

• 1989
  • 1989-02-22 DE DE19893905429 patent/DE3905429A1/de active Granted
• 1990
  • 1990-02-07 WO PCT/EP1990/000197 patent/WO1990009839A1/de unknown

Patent Citations (4)

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