Abstract: A method and apparatus for dispensing compressed gas to a receiving vessel is provided where the pressure ramp rate is varied as a function of apparent gas density in the receiving vessel. In a first portion of the dispensing process, the time-averaged pressure ramp rate is greater than during a later portion of the dispensing process.

Abstract: An apparatus and corresponding method for dispensing compressed gas to a receiving tank is provided which includes a compressed gas source, a valve for controlling the flow of the compressed gas between the compressed gas source and the receiving tank, an electronic controller, a conduit between the valve and the receiving tank, and a density sensor for sensing the density of the compressed gas inside the receiving tank. The density sensor may be a capacitive sensor, a vibrating element sensor, or a nucleonic sensor. The electronic controller stores a predetermined set point density and the density sensor measures the density of the compressed gas in the receiving tank. The electronic controller periodically compares the density of the compressed gas with the predetermined set point density and controls the flow of compressed gas through the valve.

Abstract: This invention is a directed to combustion apparatus incorporating a combustion chamber, a precombustion chamber and a multi-wall burner and a process for effecting combustion of gases, particularly feed gases containing gases that, on combustion, form solid oxidation products, i.e., solid-forming gases. A pathway is formed between the exterior of the precombustion chamber and the interior of said combustion chamber, whereby said pathway permits introduction of a secondary oxidant into the interior portion of the combustion chamber for facilitating combustion of said solid forming gas.