Metal-Seated Valve Employs Removable Cartridge
The Cartridge Valve is claimed to have a revolutionary mechanical-seal design for critical service applications. The valve uses aspects of ball valves, gate valves, and even triple-offset butterfly valves to protect the sealing surface during valve operation. A tapered hemispherical closure member (the hemi) rotates around a fixed core and wedges into a fixed seat to affect a mechanical seal. The closure member is rotated a quarter-turn by a valve stem that may be operated manually with a wrench or gear operator or automatically with a pneumatic, hydraulic, or electric actuator. It features a constant fixed core within the body to provide protection of the seating surfaces when the valve is opened, as well as minimizing turbulence as the valve is either opened or closed. The cartridge design affixes all the valve’s internal parts (core, hemi, seat, stem, bushings) to the bonnet and may be removed by unbolting the bonnet fasteners and lifting the cartridge from the valve body.
Hemiwedge Valve Corp. Inc.
(936) 539-5770
www.hemiwedgevalve.com
Thermal Treatment Tuns Biosolids into Gas
The Pyrobustor is a two-stage process, utilizing pyrolysis in a proprietary rotary drum followed by a post combustion system. Biosolids, sludge and other organic waste is pyrolytically transformed into an energy-rich gas. The residual non-volatile ash encapsulates minerals and metals, if present, into a stable inert form that permits disposal in landfills as a non-hazardous material. Depending on local market needs, the ash can also be used as filler for road construction, concrete products or similar applications. The unit is designed to treat biosolids streams up to one dry ton per hour. The space and energy efficient system works in conjunction with a dryer system to provide a 10:1 volume or mass reduction of dewatered biosolids. Waste heat from the system can be recovered for use by the dryer system or utilized to generate steam or “renewable” electrical power. Carbon credits may be generated from the reduction in emissions from transportation of the biosolids, and from generation of electrical power.
Eisenmann Corp.
(815) 477-3232
www.eisenmann.com