Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 151 - 200 out of 1,227

Document Document Title
WO/1999/047229A1
A liquid chemical delivery system (20) has a pump (27) driven by an electric motor (28) to draw a liquid from a bottle (21) and dispenses the liquid into a septic system (12). Separate independent controls (36, 37) connect the electric m...  
WO/1999/045448A1
Apparatus that provides an integrated approach for all management activities for hazardous substances used or generated at a facility, including form generation and compliance with the reporting requirements. The apparatus includes eight...  
WO/1999/038058A1
The invention relates to a method for automatic regulation of the alkalinity of cleansing baths by acid-base reaction, whereby the regulation is conducted in an automated and program-controlled manner, and the results of the regulation c...  
WO/1999/038057A1
A fluid supply apparatus comprising a pressure flow controller for controlling the rate of flow of fluid, a fluid selector valve for opening/closing the fluid passage on the secondary side, and a fluid supply controller for controlling t...  
WO/1999/024140A1
A differential pressure monitor (50) for measuring the pressure at a plurality of heights in a filter bed (38) is provided. A preferred embodiment of the monitor (50) includes an elongated body (70), a plurality of pressure sensors (56) ...  
WO/1999/024643A1
An apparatus for continuously measuring the acid concentration, comprising a combination of a main body having a flow passage for permitting a pickling liquid contained in a pickling bath to continuously flow in one direction, a densitom...  
WO/1999/018036A1
The invention concerns a method for controlling the aeration systems of biological tanks of a waste water treating plant characterised in that it consists in: (i) measuring the plant through flow (Qt),the recirculation flow (Qr) of the f...  
WO/1999/018039A1
Two control methods and systems for automatically achieving and maintaining a desired sodium/phosphate ratio and phosphate concentration of the boiler waters in a plurality of parallel industrial boilers (22A, 22B and 22C) linked by a co...  
WO/1999/011578A1
A method and apparatus for detecting and controlling cooling system characteristics is disclosed. A flow rate of make-up cooling medium is measured. A conductivity of the make-up cooling medium is measured. A conductivity of a recirculat...  
WO/1999/000717A1
A batch polymerization process controller using inferential sensing to determine the integral reaction heat which in turn is used to indicate the degree of polymerization of the reaction mixture batch. The system uses a reaction temperat...  
WO/1998/033952A1
A process is disclosed for manufacturing welded hollow bodies. A steel strip is lubricated and shaped into hollow bodies to be welded, the hollow bodies are joined by welding into a substantially tight hollow body, the thus obtained holl...  
WO/1998/029787A1
A process plant for the manufacture of halobutyl rubber is provided with online monitoring and control of the process parameters to control the properties of the product. It incorporates an in situ measurement system that does not requir...  
WO/1998/022813A1
A pH altering device comprises a fluid receptacle, a microporous membrane disposed within the fluid receptacle and dividing fluid within the interior of the receptacle into first and second fluid chambers, and an electrode disposed withi...  
WO/1998/010137A1
Continuous measurements are made of a characteristic of the individual components of green liquor fed to a slaker and white liquor exiting from the slaker. The liquor component measurements provide a precise characterization of the liquo...  
WO/1998/007082A2
An apparatus and method for controlling the output of an oxygen concentrator wherein an oxygen concentrator indicator is comprised of an oxygen sensor monitor and circuit board which receives a gas sample from the concentrator, the oxyge...  
WO/1997/048481A1
A process for regulating or controlling the NOx content of exhaust gases generated during the operation of glass furnaces with several alternately-run burners. In the process, both the beginning FP+ and the end FP- of a firing break are ...  
WO/1997/036178A1
Thickness-shear mode resonators which simultaneously measure mass deposition and fluid properties can be utilized to monitor petroleum processing, petrochemical and water treatment systems. Specialty chemical additive materials can be ac...  
WO/1997/018503A1
A device for the amperometric adjustment of an ion concentration in solution has at least three chamber-like electrolyte regions, each of which has a control electrode and diffusion-inhibiting means and can be filled with electrolytes. A...  
WO/1997/010884A1
A method is disclosed for adjusting a separation process in the cleaning of liquid manure. The concentrations of ammonia and acetic acid in the water fraction are determined by the method. The measurements of these concentrations are use...  
WO/1996/041822A1
A method for controlling a process for synthesising at least one chemical in a plant including at least one reactor (R) that may be considered as a perfectly mixed reactor, wherein control variables (GC) enable the process to be controll...  
WO/1996/041675A1
In the reverse osmosis system for water treatment according to the invention, part of the concentrate is fed back to the raw water side and part is ejected by derivation into the drain. When the load on the capacity of the system changes...  
WO/1996/041245A1
An apparatus and method for optimizing coagulant and flocculent chemical feed in a wastefluid treatment system is disclosed which uses two or more contaminant-concentration dependent parametric detectors to measure the detected parameter...  
WO/1996/039650A1
Liquid enzyme doser used to project by injection an enzyme liquid to the final product. The dosing is performed with accuracy, and is measured by means of an in-pipe positive displacement flow-meter. The regulation of the dosing is carri...  
WO/1996/035983A1
A control system (100) for a process using supercritical fluid (104) includes a reactor vessel (120) including an agitator (130) for mixing a batch of materials therein, a source of supercritical fluid (102) supplied to the reactor vesse...  
WO/1996/032669A1
The invention concerns a pelleting plant in which a continuous stream of pellets, in a layer of given thickness, flows through a heat-treatment unit (4). In order to control the heat-treatment process, the temperature distribution (T) in...  
WO/1996/021891A1
An apparatus and method for programming a controller to vary the concentration set-point of an additive as a function of time. The present invention insures that the additive is injected to the machine at proper times to allow for optimu...  
WO/1995/006008A1
A process of and apparatus for determining when the effective bromine contained in a polybromide impregnated resin cartridge used in a water disinfection system (10) is depleted. The cartridge is stored in a housing (34). The bromine con...  
WO/1995/005605A1
This invention relates to an automated process for controlling the rate of chlorine dioxide made from sodium chlorate-chloride and sulfuric acid is generated. The process automatically adjusts the rate of chlorine dioxide production to t...  
WO/1995/004957A1
A continuous emission monitoring system for manufacturing plant (10) includes a control system (16) which has associated therewith a virtual sensor network (18). The network (18) is a predictive network that receives as inputs both contr...  
WO/1995/004878A1
An internal combustion engine (360) is provided with a plurality of sensors to monitor the operation thereof with respect to various temperature measurements, pressure measurements, etc. A predictive model processor (322) is provided tha...  
WO/1995/003997A1
An automatic control system for maintaining the quality of water in a cooling tower utilizes a probe (38) which senses the oxygen reduction potential (ORP) of a soap having a 1:1 stoichiometric equivalent of an organic acid and ammonia i...  
WO/1995/003998A1
An automatic control system for maintaining the quality of water in a cooling tower utilizes a probe (38) which senses the oxygen reduction potential (ORP) of a soap having a 1:1 stoichiometric equivalent of mineral acid and ammonia or a...  
WO/1995/003254A1
Apparatus which monitors and controls biological activity of mixed liquor under aerobic, anoxic and anaerobic conditions by measuring changes in NAD(P)H and/or dissolved oxygen, comprising a chamber (8) having an opening (66), a moveable...  
WO/1995/001591A1
An automatic control system for maintaining the quality of water in a cooling tower utilizes a probe (38) which senses the oxygen reduction potential (ORP) of a soap having a 1:1 stoichiometric equivalent of an organic carboxylic acid an...  
WO/1994/028230A1
Microorganisms, including both viruses and bacteria, which are found in or on infectious waste (12) are destroyed via enzymatic activity in an enzyme tank (10). A system controller (14) is used to adjust the pH and temperature conditions...  
WO/1994/016369A1
In the method described, a constant quantity of the acidic liquid is reacted, before it is contacted with the glass electrode, with a quantity of base until the electrode indicates that a target pH range of 2.5 to 11.5 has been reached. ...  
WO/1994/016323A1
A method and system for controlling the concentration of one or more gaseous species of interest in a sample medium throughout a range of temperatures in which a temperature related, time variable dominant independent source of the gaseo...  
WO/1994/004913A1
The invention concerns a polarographic sensor for the determination of certain components in the exhaust from internal combustion engines in order to control the air/fuel ratio. The sensor can be used in exhaust gases from both fuel-rich...  
WO/1994/003796A1
The invention relates to an arrangement for continuously monitoring the concentration of nitrogen oxygen, especially nitric oxide NO, in gas mixtures with a substrate having at least two electro-chemical half-cells with a thin-film oxyge...  
WO/1994/003795A1
The invention relates to a device for the continuous monitoring of the nitric oxide NO concentration in gas mixtures with a substrate which has at least two electro-chemical half-cells with an oxygen ion-conductive solid electrolyte FE a...  
WO/1993/021359A1
The difference between the concentration of a predetermined component in a chemical processing liquid (plating liquid) currently analyzed by an analyzer and that of the same component in the same liquid analyzed the last time is determin...  
WO/1993/017611A1
An apparatus and method for programming a detergent controller (12) to vary the detergent concentration set-point (14) according to the time of day and to achieve detergent concentration levels quickly without incurring overshoot. Thus, ...  
WO/1993/007089A1
A method of controlling a wastewater purification plant comprises the steps of measuring two or more of a number of parameters, automatically controlling the plant on the basis of the measurement values obtained using a mathematical mode...  
WO/1993/004004A1
A process and apparatus system for continuously monitoring the hydrogen sulfide concentration present in the atmosphere (14) above a waste water stream (12), such as a sewerage stream, and for controlling the amount and time of injecting...  
WO/1993/003077A1
Hydrogel provided as tablets capable of regulating without dissolving, any pH of an aqueous solution, to finally convert the pH to 7. These tablets may be removed from the solution at any time without modifiying the pH and they may be re...  
WO/1992/003772A1
A method and an apparatus for controlling reactant ion concentration within a precipitation vessel to optimize the reactions occurring therein is disclosed. In one important implementation, the reactant controlled comprises halide ion in...  
WO/1991/013031A1
Water treatment apparatus (10) has a base frame (12) and an upright frame (13) mounting a pair of parallel treatment modules each having an inlet line (14) to a motive water pump (15) whose outlet (16) leads to a first inlet of an educto...  
WO/1991/004486A1
Devices and methods for sensing the charge condition of a mixed stream of aggregant and aqueous dispersion of charged particles, are based on sensing changes in the potential of an electrode contacting the stream. Sensing the changes in ...  
WO/1991/002964A1
Efficient control of the pH of a flowing alkaline wastewater stream is accomplished by monitoring the pH of the flowing stream, generating a signal in response to the pH monitored, and injecting CO2 as necessary to reduce the pH. High pr...  
WO/1991/000997A1
A system and method for monitoring conditions in a fluid medium. A stream of the fluid medium is flowed through a fluid container which is electrically configured as a transmission line segment and which is electrically connected to load...  

Matches 151 - 200 out of 1,227