Pipeline Contactors

Pipeline Contactors The power dissipation per unit mass for pipeline flow is similar to that for two-fluid nozzles. 

Alves, G.E., Co-current liquid-gas flow in a pipeline contactor, Chemical and Process Engineering, 50, No. 9, pp. 449-56 (1954). 

In liquid-liquid contacting towers, data cited by Fair (1972) range from 100-12,000 Btu/(hr)(cuft)(°F) and heights of transfer units in the range of 5 ft or so. In pipeline contactors, transfer rates of 6000-60,000 Btu/(hr)(cuft)(°F) have been found, in some cases as high as 200,000. 

Example 17 Approach to Equilibrium—Perfectly Mixed, Complete Exchange This would be approximated by a very long pipeline contactor where an acidic aqueous stream is injected to cool the gas and remove NH3. 

A short cocurrent horizontal pipeline contactor gives 86 percent removal of NH3. There is no bypassing because of the highly turbulent gas flow and injection of liquid into the center of the pipe. What would we expect the exit gas temperature to be ... 

Example 20 A Contactor That Is Twice as Long, No Bypassing If we double the length of the pipeline contactor, double the effective contact area, and double the number of transfer units to 4, what do we expect for performance ... 

High-Velocity Pipeline Contactors High-velocity cocurrent flow can give more power input than any other approach. This is critical when extremely high rates of reaction quenching are needed. 

Breakup in a highly turbulent field (l/velocity)1-2. This appears to be the dominant breakup process in distillation trays in the spray regime, pneumatic atomizers, and high-velocity pipeline contactors. 

Introduction There are two types of gas-liquid contactors where the liquid is deliberately dispersed. In the most common, a spray nozzle is used to generate droplets. A second type is the pipeline contactor, where the entrainment generated by flowing gas generates the droplets. 

Pipeline Contactor—Impact on Effective Heat Transfer. 14-... 

In the above case of a pipeline contactor, pure oxygen is used instead of air. The excess of umeacted oxygen, which comes out of the pipeline contactor, can be compressed and reused with the fresh... 

Pressure drop in the pipeline contactor can be calculated from the procedure given by Lockhart and Martinelli (1949) ... 

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