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Sulphuric Acid on the WebTM Technical Manual DKL Engineering, Inc.

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Sulphuric Acid on the Web

Introduction
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DKL Engineering, Inc.

Handbook of Sulphuric Acid Manufacturing
Order Form
Preface
Contents
Feedback

Sulphuric Acid Decolourization
Order Form
Preface
Table of Contents

Process Engineering Data Sheets - PEDS
Order Form
Table of Contents

Introduction

Bibliography of Sulphuric Acid Technology
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Preface
Contents

Sulphuric Acid Plant Specifications
 

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Sulphur Burning
June 22, 2003

Introduction
NOx Formation
Associated Links

Sulphur Furnace
Sulphur Guns

Sulphur Systems


Introduction

IN PROGRESS

 

NOx Formationnox_furnace.JPG (16684 bytes)

The burning of sulphur in air in a typical furnace has temperatures and residence times that result in the formation of thermal NOx.   The figure to the right illustrates the relationship between furnace temperature/SO2 concentration and the relative formation of NOx in the sulphur furnace.  In some processes where high SO2 concentrations are required, the formation of NOx is at its maximum.  At concentrations above 18% SO2, the O2 still present in the gas has a greater influence on the degreeof NOx formation than does the temeprature.  Therefore, by limiting the amount of oygen in the gas, NOx formation can be minimize even though the operating temperature is high.

Special stage combustion techniques and gas recycle can be used to reduce NOx formation.

See also Technology - NOx, NOx in Acid Regeneration Plants