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Liquid Distributors and Redistributors

Liquid Distributors and
Redistributors

in Metal and Plastic

Standard liquid distributors are usually used for liquid loads in a range of 5 to 80 m³/m²/h. Their simple design allows short production times and low cost. Various applications in industry require special liquid distributors to ensure
optimal distribution quality, highest wettability, controlled gas flow, low pressure drop, fouling resistance or high operating ranges. For all of the different industrial demands, Raschig has a standardized or customized solutions. The liquid distributor selection matrix below offers a first indication on the liquid distributor for the individual application.

Liquid Distributor

Selection Matrix: Standard liquid distributor

Type	Column diameter (mm)	Standard loading range	Liquid load u_L [m³/m² h]			Gas capacity factor [√Pa]			Sensitivity to fouling

Type	Column diameter (mm)	Standard loading range	Liquid load u_L [m³/m² h]			Gas capacity factor [√Pa]			Sensitivity to fouling
			u_L < 5	5 < u_L< 80	u_L > 80	F_V < 1	1 < F_V < 2,5	F_V > 2,5
DT-1	> 800	2:1		x	x	x	x		yes
DT-2	> 800	10:1		x	x	x	x		no
DR-2	< 1200	2:1		x	x	x	x		yes
DR-3	< 1200	10:1		x	x	x			no
DP-1	> 100	2:1		x	x	x	x	x	yes
DP-S	> 500	3:1		x		x	x		no
RP-1	> 1200	2:1		x	x	x	x		yes
RP-2	> 300	2:1		x	x	x	x		yes

High-quality Distributor

Type	Column diameter (mm)	Standard loading range	Liquid load u_L [m³/m² h]			Gas capacity factor [√Pa]			Sensitivity to fouling

Type	Column diameter (mm)	Standard loading range	Liquid load u_L [m³/m² h]			Gas capacity factor [√Pa]			Sensitivity to fouling
			u_L < 5	5 < u_L< 80	u_L > 80	F_V < 1	1 < F_V < 2,5	F_V > 2,5
DT-MF	> 500	2:1 – 5:1	x	x (<10)		x	x	x	yes
DT-S	> 300	2:1 – 5:1	x	x		x	x	x	no
RP-P2	< 300	2:1			x	x			yes
RP-S	< 300	2:1 – 5:1	x	x	x	x	x	x	no
DR-S	> 1200	2:1 – 5:1	x	x	x	x	x	x	yes
DT-W	> 300	2:1		x		x	x		no
DR-LL	> 1200	2:1 – 5:1	x (<2)			x	x		yes

Standard Liquid Distributors and Redistributors in Metal and Plastic

Trough Distributor

Type DT-1,

Ø > 800 mm

Trough Distributor

Type DT-2,

Ø > 800 mm

Fouling service

Pan Distributor

Type DR-2,

100 mm < Ø < 1200 mm

Pan Distributor

Type DR-3,

100 mm < Ø < 1200 mm

Fouling service

Pipe Distributor

Type DP-1,

Ø > 100 mm

Spray Distributor

Type DP-S,

Ø > 500 mm

Chimney Distributor

Type RP-1,

Ø > 1200 mm

Chimney Distributor

Type RP-2,

Ø > 300 mm

High Quality Liquid Distributors in Metal and Plastic

High quality Distributor

Type Multi-Flow DT-MF,

Ø > 500 mm

Very low liquid rates

High quality Distributor

Type DT-S,

Ø > 300 mm

Low to medium liquid rates

High quality Distributor

Type DR-S,

100 mm < Ø > 1200 mm

Low to medium liquid rates

High quality Distributor

Type RP-S,

Ø > 300 mm

Low to medium liquid rates

High quality Distributor

Type DT-W,

Ø > 300 mm

Medium liquid rates

High quality Distributor

Type DR-LL,

Ø < 1200 mm

Very low liquid rates

High quality Distributor

Type RP-P2,

Ø > 300 mm

High liquid rates beside low gas
velocity