How Toxfree provided cleaning for Fluid Dynamics with high pressure water blasting and air driven rigid lance at 36000 psi of pressure.

DSC06406Before After

Fluid Dynamics required the clean and waste removal for a heat exchanger. The heat exchanger is used on the application of cooling exhaust gas from bio gas engines. The exhaust gas heat exchanger (EGHE) takes incoming waste heat exhaust gas from the engine and the gas is used to heat process water from the waste water treatment plant. This causes the exhaust gas to be cooled to a temperature that is safe enough to be sent to the exhaust stack.
With the use of the EGHE the plant is becomes self-sufficient; generating heat and power to the plant using naturally generated bio gas from the waste water treatment plate (WWTW) through the engines. The processed water is on a closed circuit ring flowing around the plant and is heated using the waste exhaust heat. Waste builds up in the heat exchanger which can affect its efficiency, it is important to keep them clean and working well.

Toxfree used a 220 horse power pump with a maximum pressure usage of 36000 PSI and a performance flow rate of 28 litres per minute using a rigid lance and hand gun method of cleaning. A Revard combination unit was used to vacuum all the waste from the tube that was captured within the Bunded area then taken to a Toxfree EPA approved facility to be treated.
The first step was to wash the external faces of the heat exchanger and the outside shell with a volume hose to limit overspray of product when high pressure blasting. The next step was to hand gun the external ends and outer tube with high pressure using an operator hand-held gun.
Next a rigid lance was set in position to clean two tubes at a time with maximum pressure of 36000 PSI. This method cleaned the internal walls of the tubes to a very high standard and removed all contaminants from the internal tubes.

The tube bundle was returned to the client within a very short time-frame, the client was very impressed with the standard of the clean and the cost efficiency of the job.

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