BET specializes in fabric filter based air pollution control systems for combustion applications.  While many air pollution control companies try to serve virtually all applications, BET has found that their relatively narrow market focus offers great rewards to both the company and their clients.  BET has become very experienced in these segments and incorporates features in their design that optimize the systems on these applications.  While the company is always willing to consider related or similar applications, typically 90% of the company's business comes from the selected markets, which currently are in three areas:  industrial and institutional incinerators, industrial solid fuel fired boilers and brick kilns.  These applications all have similarities, but each with its own unique aspects.

Brick plants are also a target of the Clean Air Act  Amendments with new regulations for the emissions of HCl, HF and particulate matter from brick kilns.  As with boilers, environmental litigation has vacated the new standards, but in the meantime, BET provided control for a dozen kilns, and is well positioned to serve the market for new brick plants and retrofits of existing plants.  

The equipment train is similar to the company's incinerator and boiler applications, dry reagent injection and pollutant removal in a baghouse (DIFF system), complete with sub-systems that typically include gas temperature control, an ID fan, draft control, ductwork and duct valves, dust handling, etc.  Of particular importance to the brick industry is BET's partnering philosophy.  Our willingness to provide technical support for the life of the system at no additional charge to the customer has been very well received in this demanding marketplace.

Stringent environmental regulation that created a new market in the 1980's, in the long run shifted the economics so that most incinerators were eventually shut down in favor of alternative disposal methods.  However, there will always be certain situations, both in the US and especially abroad, where incineration is the selected disposal method, and BET is one of the few companies that has considerable experience.  

Incinerator applications typically require gas cooling followed by extremely  stringent acid gas, toxic material and particulate matter removal.  BET's evaporative cooler and boiler capability can be used for the gas cooling.  Dry and semi-dry gas scrubbing, along with a polishing scrubber, if necessary, will meet virtually any acid gas removal requirements.  Carbon injection controls many of the toxics, while the BET fabric filter provides the final pollutant removal.  Auxiliary systems, such as hot gas and baghouse by-pass systems, draft control, material handling, air moving equipment, etc. are all incorporated as needed to suit the specific job requirements.

The Clean Air Act created particulate matter regulations for solid fuel fired boilers in the 1970's, at the same time that energy costs skyrocketed.  The two forces created a major market for baghouses on industrial solid fuel fired boilers, and Standard Havens (BET's forerunner) was by far the most successful supplier of boiler baghouse systems, providing control of over 100 boilers.  

History has repeated itself  in the last few years when again gas and oil prices shot up and new environmental regulations for solid fuel fired boilers were enacted, this time for HCl and mercury emissions.  Due to environmental litigation, the emission regulations are uncertain at this time, but still the market is back and BET is well qualified to serve it.  

BET's experience with boiler operations includes dozens of fuels and firing methods, and the acid gas scrubbing and toxics removal experience from the incinerator applications lets BET provide a proven integrated system.  A dry injection fabric filter (DIFF) system with either a lime or sodium based reagent injection, plus activated carbon injection, followed by a multiple compartment baghouse provides a reliable, maintainable and durable system that assures compliance.  The company has supplied complete new systems, added on to previously supplied BET baghouses, and has upgraded competitor's baghouses.