Column internal support structure

1. A column structure for the containment of high surface area packing and absorbent liquid reagent for the removal of a target gas from a gas stream, comprising:

an elongate upright wall structure defining a perimeter comprising a closed simple polygon or closed simple curve;

a support structure extending inwardly from the perimeter of the column towards a top thereof; and

slung tensile members attached to the wall structure of a top support structure and extending downwardly to support at least one internal column structure within the walls of the column,

wherein at least one internal partition wall structure is provided extending vertically along at least apart of the length of the column to partition the column where it so extends into at least two zones which are fluidly separate.

2. A column structure in accordance with claim 1 wherein a notional perimeter circumscribed by the vertical tensile members is additionally provided with a partition wall structure extending vertically along at least a part of the length of the column to partition the column where it so extends into at, least an inner and an outer zone which are fluidly separate.

3. A column structure in accordance with claim 2 wherein the partition wall comprises vertical wall members parallel to and either side of the tensile members.

4. A column structure in accordance with claim 2 wherein the partition wall is a similar shape to, smaller in transverse extent than, and concentrically disposed within, the outer vessel wall.

5. A column structure in accordance with claim 2 wherein a zone is further subdivided by one or more further wall structures.

6. A column structure for the containment of high surface area packing and absorbent liquid reagent for the removal of a target gas from a gas stream, comprising:

an elongate upright wall structure defining a perimeter comprising a closed simple polygon or closed simple curve,

a support structure extending inwardly from the perimeter of the column towards a top thereof; and

slung tensile members attached to the wall structure of a top support structure and extending downwardly to support at least one internal column structure within the walls of the column,

an elongate prismatic structure having plural planar generally vertical walls together defining a dosed simple polygonal perimeter, wherein the internal angle, between each wall making up the polygonal perimeter is at least 120° and less than 180°.

7. A column structure in accordance with claim 6 wherein the polygonal perimeter of the column is a cyclic polygon.

8. A column structure in accordance with claim 7 wherein the polygonal perimeter of the column is a regular equiangular and equilateral polygon.

9. A column structure in accordance with claim 6 wherein the polygonal perimeter of the column defines a polygon with an even number of sides.

10. A column structure in accordance with claim 9 wherein the column comprises paired opposite parallel sides.

11. A column structure in accordance with claim 6 wherein the column has 12 to 20 sides.

12. A column structure in accordance with claim 6 provided in the form of a plurality of planar wall modules, each comprising a structural sheet member to constitute when assembled in situ a part of a wall having a long dimension no greater than 6 m, and a plurality of connection members to provide for connection and assembly of the same into a complete column in situ.