Annular gas feed element for use in gasification plants with a dry fuel supply

Abstract

An annular gas feed element for use in gasification plants with a dry fuel supply. A gas feed ring element for tensioning and fluidizing gas/solid suspensions, in which gas feed ring element there is a housing ring which has a circumferential recess on its inner side, a support ring with a multiplicity of openings, filter material fitted between the support ring and the internal diameter of the housing ring, where the recess and the filter material delimit a distributor chamber, and a gas feed arranged from outside into the distributor chamber. The flangeless gas feed ring element makes rapid tensioning possible and secondly improves the fluidizing behavior and therefore the flow behavior.

Claims

1. A gas feed ring element for tensioning and fluidizing gas/solid suspensions, wherein the gas feed ring element comprises: a housing ring which comprises a circumferential recess on its inner side, a support ring comprising a multiplicity of openings, filter material fitted between the support ring and an internal diameter of the housing ring, wherein the circumferential recess and the filter material delimit a distributor chamber that defines an annular volume, and a gas feed arranged from outside into the distributor chamber, wherein the gas feed opens tangentially into the annular volume of the distributor chamber.

2. The gas feed ring element as claimed in claim 1, further comprising: a baffle plate arranged in the distributor chamber in an inlet region of the gas feed.

3. The gas feed ring element as claimed in claim 1, wherein the multiplicity of openings are arranged at an angle with respect to a surface of the support ring, which angle differs from the perpendicular.

4. The gas feed ring element as claimed in claim 1, wherein the multiplicity of openings comprise different angles among one another.

5. The gas feed ring element as claimed in claim 1, wherein the gas feed is arranged at an angle with respect to a surface of the support ring, which angle differs from perpendicular.

6. The gas feed ring element as claimed in claim 1, wherein the filter material is formed with metal fabric.

7. The gas feed ring element as claimed in claim 1, wherein the filter material is formed with sintered metal.

8. The gas feed ring element as claimed in claim 1, wherein the filter material is formed with porous metal.

9. The gas feed ring element as claimed in claim 1, wherein the housing ring, the filter material and the support ring are welded to form a unit.

10. The gas feed ring element as claimed in claim 1, wherein the housing ring is shrink-fitted onto the support ring together with the filter material.

11. The gas feed ring element as claimed in claim 1, wherein the gas feed ring element is devoid of a connector flange.

12. The gas feed ring element as claimed in claim 1, wherein a solid is provided by combustible dust, and the gas feed ring element is arranged at the bottom of a lock for feeding in the combustible dust at a tensioning pressure of between 2.5 and 8 MPa.

13. The gas feed ring element as claimed in claim 1, wherein the gas feed ring element is arranged between a flange of a lock and a flange of an isolation valve.

14. The gas feed ring element as claimed in claim 1, wherein the gas feed ring element is inserted into a pneumatic delivery line.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the following text, the invention is explained in greater detail as an exemplary embodiment to an extent which is required for comprehension using figures, in which:

(2) FIG. 1 shows an arrangement of the fluidizing ring as part of a lock container,

(3) FIG. 2 shows an exemplary installation of the fluidizing ring into a flange connection, and

(4) FIG. 3 shows a fluidizing ring with a tangential gas feed and inclined openings.

DETAILED DESCRIPTION OF INVENTION

(5) Identical designations denote identical elements in the figures.

(6) The gas feed ring element according to the invention for tensioning and fluidizing gas/solid suspensions is configured as a ring and does not have a dedicated flange connection.

(7) The gas feed ring element has one or more gas feeds 10, the gas being distributed to a filter material 6 via a distributor ring 5 which is machined from the housing ring 4.

(8) One or more baffle plates 11 can be arranged in the distributor ring 5.

(9) The filter material 6 is pulled on the outside onto a support ring 7 with openings, the support ring and the filter material being arranged in a housing ring 4.

(10) The housing ring 4 can be shrink-fitted onto the support ring 7 together with the filter material 6.

(11) The housing ring 4 can be welded to the support ring 7 together with the filter material 6.

(12) The filter material 6 can consist of metal fabric, sintered metal, or of porous metal.

(13) The gas feed 10 can take place radially into the distributor space.

(14) The gas feed 10 can take place tangentially into the distributor space.

(15) The openings in the support ring 7 can be configured as bores or as slots.

(16) The openings in the support ring 7 can be inclined.

(17) The gas feed ring element can be arranged below a lock of a coal gasification plant at tensioning pressures of between 2.5 and 8 MPa.

(18) The gas feed ring element can be arranged between the flange of the lock 2 and the flange of an isolation valve 3.

(19) In one embodiment which is adapted with regard to the dimensions, the gas feed ring element can be inserted into pneumatic delivery lines for adding gas for flushing or improving the delivery.

(20) The gas feed ring element can be integrated into a pneumatic delivery line.

(21) The present invention has been explained in detail using specific exemplary embodiments for illustration purposes. Here, elements of the individual exemplary embodiments can also be combined with one another. The invention is therefore not intended to be limited to individual exemplary embodiments, but rather merely be restricted by way of the appended claims.

LIST OF DESIGNATIONS

(22) 1. Fluidizing ring, gas feed ring element 2. Lock 3. Isolation valve 4. Housing ring 5. Recess: housing ring, distributor space, annular chamber 6. Filter material 7. Support ring 8. Openings in the support ring 9. Dust space 10. Gas feed 11. Baffle plate 12. Lock flange 13. Ball valve flange, isolation valve flange