Monitoring of Pyrolysis and Gasification Processes (Advanced Thermal Processes)

 

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Introduction

Syngas or synthetic gas is produced via pyrolysis or gasification, where waste or feedstock is heated in a low oxygen environment. This process also produces a solid residue (ash or char) and, depending on the process, an oil.  The clean syngas can be used to generate electricity or be used in boilers, kilns or engines.

Syngas is commonly made up of a mix of carbon monoxide, hydrogen, methane, carbon dioxide and nitrogen as well as lower concentrations of higher molecular weight hydrocarbons. There can also be smaller quantities of impurities such as hydrogen sulphide and ammonia. The composition of syngas requires monitoring for its use to be effective.


OUR SERVICE

We offer a detailed analysis of syngas by gas chromatography/mass spectrometry including calculation of the calorific value/energy content. Analysis of selected gas contaminants can also be undertaken.

 

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Table 1. showing a selection of siloxane compounds we test for. Please contact us for alternative compounds.

Table 1. showing a selection of siloxane compounds we test for. Please contact us for alternative compounds.

Siloxanes

Although not strictly an emission in the pure sense of the word, MSSL also provides analysis of Siloxanes from biogas samples, these compounds can cause costly mechanical and degenerative problems in combustion engines, boilers and gas turbines. The suite of siloxanes offered is tabulated opposite.


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Further testing

Ash or Char are produced by pyrolysis/gasification processes. These are normally unwanted solid bi-products that are disposed of as waste. Usually the testing requirements will be energy content and waste characterisation to enable safe disposal of the material. Where a process produces a liquid bio-oil this will require testing for calorific value and composition.