HIGH TEMPERATURE BLASTING
Since 1991 PBI has performed industrial explosive services in high temperature environments. In some cases this process is referred to as “online blasting”.
By keeping the explosive relatively cool, we are able to place and detonate shots at will in furnaces, hoppers, bag houses, precipitators, and tube assemblies.
Often times our videotography services may be concurrently used to evaluate the effectiveness of the blasting.
Conventional blasting may involve using binary explosives or linear explosives detonated with either electric or nonelectric detonators. Applications include blasting in hoppers, furnaces, tube bundles, silos, bag houses, precipitators, scrubbers and reactors.
Specialty applications include refractory removal in bottom ash hoppers, blasting in ceramic or rubber lined vessels.
Working in conjunction with a firm that specializes in manufacturing inspection systems, we have designed and built a portable camera system that can be used in environments up to 2500 degrees F. The purpose is to inspect for fouling prior to blasting or to determine the effectiveness post blasting.
"ON-LINE" DESLAGGING can be effective in the following boiler areas: ash extractors, hoppers, lower slopes, walls, burners, bull noses, superheaters, reheaters, and other tube assemblies. Applications in other vessels or constructs, include baghouses, precipitators and scrubbers. A critical factor in determining whether or not this application may be effective is the access point in relation to the area to be cleaned.
Typically this application uses either small binary charges or charges using detonating cord. One of the advantages of the detonating cord system is that it may be placed in flue gas lanes in tube assemblies. This is accomplished by inserting the detonating cord and detonator in a disposable tube which is attached to swivel device. The swivel device allows the tube to be rotated 360 degrees.
"OFF-LINE" DESLAGGING can begin when the ambient air temperature of the vessel being cleaned is at or below 300 degrees Fahrenheit. We use both electric and non-electric initiation systems in conjunction with binaries and detonating cord. In some instances we use 12-gauge shotguns with appropriate shot size to remove smaller clinkers.
For assistance in evaluating your particular application, do not hesitate to contact us at 606-836-2600 for a prompt personal response.
PBI uses small explosive charges strategically placed to remove ash from plates, wires and positrodes in electrostatic precipitators. This process can be done when the precipitator is either energized or not.
Customers who may at times have had problems with their opacity levels have found it most beneficial to blast while the units are energized. One of the major benefits of this, is the fact that they do not have to take the unit out of service. Blasting while the ESP is still operating can save significant amounts of money.
To evaluate if this process is right for your facility, do not hesitate to call our 24-hour number for a prompt personal response.