Miratech Corp. has announced the availability of its new Rypos Trap Active Diesel Particulate Filter System, which is designed to use patented RYPOS technology to regenerate trapped particulate matter from diesel engine exhaust.
The system is designed to perform well with land- and marine-based generator sets, water pumps and other direct-drive diesel engine driven applications. It is designed for easy, low cost installation in existing exhaust systems and includes flanged ends and high temperature gasket materials to prevent exhaust gas leakage.
Miratech, which is headquartered in Tulsa, Okla., pointed out that most soot filters are made of extruded ceramic material that tends to be brittle and often develops cracks due to thermal chock and pressure pulsation within the exhaust steam. It said the Rypos Trap was developed with a sintered metal fiber filter that is much less susceptible to cracking due to the fact that the metal conducts heat and is more ductile than its extruded ceramic counterparts.
"The Rypos Trap's technically advanced design incorporates a sintered metal fiber filter which over the life of the product is more durable. This is especially helpful when operators are working in transient conditions," said Jim McDonald, Miratech's manager of business development
The modular, easily replaceable metal fiber filter element is the key to the new system's performance, according to the company, but other design features help assure its long life and dependability.
In addition to the media, the system's filter support structure and reactor housing each have been designed to accommodate the engine exhaust gas flow, pulsations, pressure and thermal conditions experienced during normal engine operating conditions without damage. As a result, the company said the Rypos Trap can function under all commonly experienced engine operating conditions without distortion, vibration or damage to the filter system.
The filter itself is designed to operate within allowable engine back pressure requirements. When the back pressure reaches a preset level, an electrical current is applied across the filter elements to heat and oxidize the accumulated soot and soluble organic fraction.
The company points out that the use of electrical current to burn off soot is one of the Rypos Trap's truly distinctive features.
Whereas many systems depend upon a high exhaust temperature or catalyst that is subject to poisoning to burn off the soot, the Rypos Trap's electrical regeneration system allows it to function regardless of exhaust temperature or engine load factor. Since the Rypos Trap does not rely on exhaust temperature as a means of regeneration, it requires no catalytic coating to work and it works from the moment the engine starts.
A key benefit to the Rypos Trap, according to the company, is that, unlike catalytic systems that can be poisoned by sulfur, especially at the low temperatures encountered during start-up, its operation is completely independent of the level of sulfur in the fuel being used. With the Rypos Trap it is not necessary to use low sulfur fuel to meet emissions requirements. As low sulfur fuel is generally more expensive than other available options, this can save considerable expense.
Operation with the Rypos Trap results in an especially low exhaust pressure drop, according to Miratech, which results in minimal impact on a diesel engine's power output and fuel consumption. The company said that with the Rypos Trap in place, the typical exhaust pressure drop is less than 20 in. [H.sub.2]0 (28 mm Hg). That value complies with engine manufacturer back-pressure requirements and will not affect engine warranties.
