Cause analysis and solutions for ESP corrosion

Kiln back-end electrostatic precipitator (ESP) of an Egypt cement plant experienced severe corrosion within one year of operation. Based on the chemical composition of samples, calculation of the acid dew point and XRD analysis of rust powder, ESP corrosion reasons were found, including the high chloride content in raw meal, high water vapor content, the severe air leaking. Solutions were proposed.

1 Introduction

A cement plant, one of EPC projects by Tianjin Cement Industry Design & Research Institute (TCDRI) Co. Ltd., is situated in Egypt directly on the Mediterranean Sea. The climate is moist and the day-night temperature difference is big. The nominal capacity of this production line is 5500 t of clinker per day. The production line firing natural gas is a 5-stage precalciner kiln, equipped with a TTF calciner (TCDRI Tri-spouted Furnace).

Severe corrosion occurred on the pole wire, pole plate, shell (Fig. 1) of the kiln back-end electrostatic precipitator (ESP) within one year after...

Related articles:

Issue 7-8/2015 TIANJIN CEMENT INDUSTRY DESIGN & RESEARCH INSTITUTE CO.

Technology improvement of production of sulfuric acid integrated with cement from phosphogypsum

1 Introduction Phosphogypsum is a kind of solid waste produced by wet-process phosphoric acid production, with annual emissions of more than 100 million tons worldwide and 50 million tons in China,...

more
Issue 3/2020 WO 2019/232195 A1

Flue gas desul- furization system and method for perfor­ming flue gas desulfurization

(22) 30.05.2019 (43) 05.12.2019 (57) A flue gas desulfurization (FGD) system in which a buffering additive feed directly adds a buffering additive containing acetic acid to either the FGD sump or a...

more
Issue 12/2014 OTTO-VON-GUERICKE-UNIVERSITÄT MAGDEBURG/GERMANY

Energy consumption and CO2 content in the flue gas of normal shaft kilns: Part 2: Influence of the limestone quality and the process parameters

1 Influence of the CO concentration in the flue gas The lime shaft kiln is used in the lime industry in order to produce so-called medium to hard-burnt lime. This type of kiln is also used in the...

more
Issue 11/2014 OTTO-VON-GUERICKE UNIVERSITY MAGDEBURG/GERMANY

Energy consumption and CO2 content in the flue gas of normal shaft kilns | Part 1: Influence of the air excess number

1 Introduction The so-called multi-fuel-fired normal shaft kiln (NSK) is one of the oldest types of lime shaft kiln, in which burnt lime is produced from limestone by expelling the carbon dioxide...

more
Issue 06-07/2009

Ecological comparison between hydrated lime and sodium bicarbonate when used for dry flue gas purification

Lime plays an important role in environmental protection. Not only due to its properties but also due to its natural occurrence, it is suitable and accepted for universal application in the...

more