Orsat Analysis

Orsat analysis is one of techniques to analyze flue gases. Orsat analysis is even now regarded as the most beneficial technique to analyze flue gases correctly. Orsat device as shown in Figure 1 contains some components (labeled) such as:

-          Label A is straight burette which flow from bottom to top and contains 100 sections

-          Label B is aspirator container

-          Label D1, D2, and D3 are pipettes that are numbered 3 pieces comprising absorbents stuffed with beads or glass tubes intended for improving absorption areas. Each pipettes contains solution as follow:

·         CuCl2 (cuprous chloride) in HCl intended for CO

·         Alkaline pyrogallol intended for O2

·         KOH (Potassium hydroxide) intended for SO2 dan CO2)

Each one pipette is linked to an unoccupied pipette lurking behind it so absorbent could subside directly into this when the gas is accepted. Label C is the primary separating cock pertaining to gas maintenance in the process in conjunction with Label F1, F2, and F3 which is 3 separating cocks intended for 3 pipettes.

Figure 1: Orsat Device for Orsat Analysis
(Source: Book-Boiler for Power and Process-Kumar Rayaprolu)

The process of orsat analysis is as follow:

1. Aspirator container aspirates gas approximately 100 cc.
2. 3 absorbents absorbs gas in certain series
3. Record absorption through variation in the burette. Caution, tight adherence to the right planning of absorbents and the process to specific focus are required to get mistake-free outcomes. To get correct samples on a continual base, a suction pump is utilized to suck up flue gas, because the aspirator only is normally not sufficient.