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Internal devices of columns and apparatus

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Classification of disc contact apparatus

Dish contact devices of rectification and absorption apparatuses are classified:

  • according to the number of flows;
  • by type and design of contact elements;
  • By the nature of the interaction of the phases in the contact zone;
  • by the organization of liquid overflow, etc.

According to the number of streams (discharges) plates are made as single-flow, two-flow and multiflow (Fig. 2.3). Also multidrain disks with evenly distributed over the area drains and disks with cascade arrangement of a cloth are used.

Multi-flow and multi-leaf trays are used in large diameter columns and at considerable fluid flow rates. Such trays provide a more uniform liquid level and vapor distribution over the contact area.

Depending on the direction of movement of vapor and liquid phase in the contact zone, there are plates with direct flow, counterflow and cross-current.

According to the organization of liquid overflow plates are divided into overflow and nonoverflow (ditch type).

According to the type of contact elements plates are divided into:

  • capped (with capsule and tunnel caps);
  • with S-shaped elements;
  • strainer with baffle elements;
  • sieve-valve;
  • valve type (single-flow and double-flow);
  • valve balancers;
  • louvered;
  • shutter-valve;
  • jet-directed (flake).

It is accepted to subdivide packed contact devices into the following two types: irregular and regular.

Counterflow plates are characterized by high liquid capacity, simple design and low metal consumption. Their main drawback is low efficiency and a narrow range of stable operation, uneven distribution of flows over the cross section of the column, which significantly limits their use.

Straight-line disks are characterized by higher productivity, but moderate separation efficiency, increased hydraulic resistance and labor intensity of manufacturing, they are preferred for application in the processes of separation under pressure.

The cross-flow plate types that have received predominant use in modern oil and gas processing technology include:

  • Disks with unregulated cross-section of contacting phases of the following designs: sieve-shaped, sieve-shaped with baffles, cap-shaped with round, rectangular, hexagonal, S-shaped, grooved caps.
  • The plates with adjustable section of the following designs: valve with capsule, disk, plate, disk ejection valves, valve with ballast, combined cap-valve (e.g. S-shaped and strainer with valve), etc.
EDV® (ADV®) 1600 mm column valve plate for alcohol rectification
Producer
BTS Engineering
Material
AISI 321
In stock
0
$1 596,99
Valve plate EDV® ADV® 2000 mm for distillation, rectification, cracking
Producer
BTS Engineering
Material
AISI 321
In stock
0
$1 863,16
EDV® ADV® 1200 mm AISI 304 valve plate for bioethanol plant, alcohol
Producer
BTS Engineering
Material
AISI 304
In stock
0
$1 341,74
Valve plate ADV® 600 mm for columns, design, manufacture
Producer
BTS Engineering
Material
AISI 304
Preorder
0
$409,93
Valve plate AISI 304,800 mm with promoters for flow distribution
Producer
BTS Engineering
Material
AISI 304
Preorder
0
$731,98
Valve plate EDV ADV® 1000 mm for rectification, distillation, purification columns
Producer
BTS Engineering
Material
AISI 304
Preorder
0
$1 149,25
EDV® (ADV®) valve plate 1400 mm for distillation, rectification, cracking processes
Producer
BTS Engineering
Material
AISI 304
Preorder
0
$1 469,24
EDV® ADV distillation column valve plate 1800 mm
Producer
BTS Engineering
Material
AISI 304
Preorder
0
$1 703,46
Valve plate EDV® ADV® 2200 mm for distillation, rectification, cracking
Producer
BTS Engineering
Material
AISI 304
Preorder
0
$5 563,09
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