Features
Designed to demonstrate principle of Gas absorption by liquids.
Safe to operate & non-hazardous gases used in trainer.
Comprehensive Instrumentation Panel with all necessary measuring instruments & Safety Devices.
Tesca Gas Absorption Column is designed to demonstrate & analyze principle of gas absorption by means of liquids (solvent absorption). The unit comes complete with a packed column, a bottom cooler, a feed vessel and a circulation pump. The unit allows students to run experiments on gas absorption, e.g. the absorption of carbon dioxide into water. Sampling points are provided for analysis purposes. Other gas absorption processes that are used in the chemical industry such as the absorption of sulphur dioxide, hydrogen sulphide, ammonia, hydrogen chloride, nitric oxides, etc. can be studied but care must be exercised to ensure proper safety and disposal procedures.
Detailed Operation & Maintenance Manual is provided along with the trainer.

Technical Specifications
The unit comprises the following main items:
Absorption Column
Floor mounted packed column gas absorption unit using a 75mm diameter, 1.4m long clear acrylic column.
The column contains 7 litres of 10 x 10mm glass Raschig rings and is mounted in a steel frame.
Pressure sensing and gas sampling points are sited at the top, centre and base of the column.
Two  manometers   are   included   to   measure pressure.
A Hempl type gas analysis apparatus is included.
Three variable area flow meters are included to measure the flow of gas, air and liquid.
A rotary compressor is used to pump air into the column.
Water (solvent) is circulated using a centrifugal pump, using a 50 litre capacity feed tank.
A comprehensive instruction manual is supplied which details the necessary installation, commissioning and  maintenance procedures.

Experimental Capabilities
Study of the basic principles of the absorption of a gas into a liquid using a packed column
Demonstration of methods  of  gas  and  liquid quantitative analysis
Production of mass balances for a packed absorption column
Method of transferring units, including calculation of NTU and HTU
Determination of the Mass Transfer Coefficient
Study of the hydrodynamic characteristics of a packed column
Determination of loading and flooding points

Required Services
Electric Supply 230 V AC, Single Phase, Earthed.
Water supply: 10L/min @ 1bar
CO2 Cylinder with pressure regulator
Vent piping to outside laboratory
Titration glassware for liquid analysis Separate drain tank for treatment of effluent