rise slowly and the pressure (from the time the receiver is liquid-full) will rise relatively fast. At the time temperature and pressure match a pair of figures on the table provided, the filling valve (14) is closed cutting off the supply of gas at the fill density required.
gas mixture rich in hydrogen and carbon monoxide, such as that obtained from steam-methane reforming, an industrially useful gas mixture having a desired H2/CO ratio with the accompanying individual recovery of high purity hydrogen and carbon monoxide as by-products.
M E T H O D A N D A P P A R A T U S FOR M E A S U R E M E N T OF CARBON C O N T E N T IN FLY ASH
REVERSE O S M O S I S WATER PURIFYING S Y S T E M John E Hart
Douglas Trerice A method and apparatus is provided for reducing and measuring carbon content in fly ash. The invention employs microwave energy as the method of heating for inducing combustion of the carbon in a fly ash sample. Measurement of the carbon content can be accomplished in accordance with the present invention by measuring temperature differential of an excess energy absorber in the form of water before and after the fly ash is exposed to microwave radiation.
4705541 P R O D U C T I O N OF M I X E D GASES OF C O N T R O L L E D C O M P O S I T I O N BY P R E S S U R E SWING A D S O R P T I O N Shivaj Sircar assigned to Air Products and Chemicals Inc Adjusted gas compositions having two or more components in desired proportions for particular industrial uses are obtained from available feed gas mixtures accompanied by recovery of one or more valuable individual gases of high purity, by a novel selective adsorptiondesorption scheme carried out in a multi-column PSA system. Following initial adsorption of one or more components from the feed gas mixture at high pressure the sorbate-laden column is subjected to a high pressure rinse using as rinse gas the previously recovered more strongly adsorbed species. After the rinsing step, the column is depressured to a selected level and purged with part of the unsorbed gas effluent discharged during the initial adsorption step until a preset amount of the earlier sorbed gas is recovered in the purge effluent as the readjusted binary gas mixture of desired proportions. As an example, there is disclosed the production from a starting
A reverse osmosis (R.O.) water purifier system that collects and stores pure water at low pressure and dispenses it at high pressure. Impurities left behind when the water passes through a R.O. module are disposed of by two methods: the fast flush method and the slow flush method. In the fast flush method, water entering a R.O. module may take two paths to escape therefrom. The first path constrains it to travel through a semi-permeable membrane in the module which filters out undissolved solids and which restrains the passage of dissolved liquids. The second path allows it to travel through the R.O. module, without passing through the membrane, thereby carrying out those impurities left behind by the water passing through the membrane. The purified water is directed to one side of a compartmented storage tank and the waste water from the module is directed to a control valve. From the control valve, the waste water may be directed through a restriction to a drain or it may be directed to the other compartment of the storage tank where the purified water is held. In the slow flush method, water enters a control valve, travels to the R.O. module, and has two paths o f escape therefrom. The first path contrains it to go through the semi-permeable membrane in the R.O. module, and through a check valve to storage or outlet. The second path allows the water to escape through the R.O. module, thereby carrying to a drain the impurities left behind.
4705633 NITRIFICATION WITH S L U D G E REAERATION A N D A M M O N I A ENRICHMENT Eugene D Bogusch A nitrification process is disclosed wherein the population of the nitrifying bacteria in an ac-