HRSG

Minimise fouling and eliminate corrosion on HRSGs without any downtime via online cleaning

Online Cleaning Specialists
Over time, a Heat Recovery Steam Generator (HRSG) will experience a build-up deposits on the finned tubes impacting upon the heat transfer and ultimately reducing efficiency and overall performance of the unit.
Therma-Chem can be injected online, downstream of the gas turbine, to target any fouling in the HRSG. Our unique ability to inject chemicals without line of site of the fouled areas, makes our solution unique for cleaning HRSGs. Not only will we minimise fouling and increase the efficiency of the unit, we will also eliminate any sulphuric acid deposits protecting the integrity of the unit and ensuring that there is easy access at turnarounds.
HRSG - HRSG

COMBUSTION CHAMBER

Eliminate slagging and improve
heat transfer.

FS12 removes slagging from the tube walls and converts it to dry, friable powder. This results in increased heat transfer and restored capacity.

SUPERHEATERS

Prevent high temperature corrosion

ECONOMISER

Limit fouling and maintain flue gas velocity

BAGHOUSE FILTER

Improve performance and reduce maintenance

AIR PRE-HEATER

Prevent dew point corrosion from sulphuric acid

ESP

Improve particulate removal and reduce cleaning time

STACK

Reduce NOx, SOx and
Carbon emissions

INDUCED DRAFT FAN

Improve performance and
prevent corrosion

How does FS12 Work?
Therma-Chem’s FS12 is an mildly alkaline solution that is designed specifically to clean online. Using Therma-Chem’s proprietary injection system, the liquid is injected into the inlet duct of the HRSG, vaporises and is carried by the flue gas through the unit, encountering all heat transfer surfaces.

FS12 reacts with existing deposits and fouling on tubes by increasing their melting point and reduces them to soft powdery ash.

FS12 also neutralises sulphur deposits on the cold end of the flue gas path preventing cold end corrosion and eases man entry during a maintenance or inspection shutdown.

Therma-Chem have many years of experience in online cleaning of downstream equipment in refineries and specialise in eliminating fouling and sulphur corossion resulting in increased efficiency and availability.

tc product fs12 - HRSG
Application
FS12 can be applied to HRSGs in the following ways:

Maintenance Dosing

Applied daily, FS12 keeps units clean and prevents costly drop offs in performance and avoids the possible need for shutdowns during the operating campaign. This is the most common method of application with some customers having used Therma-Chem every day for 15 years across multiple units.

Maintenance Dosing

Applied daily, FS12 keeps units clean and prevents costly drop offs in performance and avoids the possible need for shutdowns during the operating campaign. This is the most common method of application with some customers having used Therma-Chem every day for 15 years across multiple units.

Maintenance Dosing

Applied daily, FS12 keeps units clean and prevents costly drop offs in performance and avoids the possible need for shutdowns during the operating campaign. This is the most common method of application with some customers having used Therma-Chem every day for 15 years across multiple units.