EP0464321A1
Expired / Lapsed
EP
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Automatic system for controlling and optimising of ultrafiltration processes in foodstuffs and/or chemical and/or chemical-pharmaceutical industrial plants and ultrafiltration process utilising such a system
Assignee: PERDOMINI SpA
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Filing: 1991-04-11
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Granted: —
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Expires: 2011-04-11
Abstract
Abstract The system according to the invention provides for the insertion, in an ultrafiltration plant, of probes suitable for detecting the istantaneous value of a plurality of variables, such as, e.g., temperature, turbidity, permeate quantity, flow speed, pressure, chlorine concentration, pH. Said probes are connected to a microprocessor which analyzes and elaborates the istantaneous data by comparing them with corresponding threshold values which are pre-established for a given process phase, said threshold values being divided into three different levels, namely: - normal operation; - alarm in operation: operative risk; - system shutdown. According to the invention the microprocessor, which is on its turn connected to an electronic computer, is programmed in such a way as to analyze all the possible combination of values which may be operatively intersected, and to allow the plant to be held into operation even if some values would fall within the limit of operative risk, provided that the other correlated parameters would compensate this kind of "breaking".
Inventors
- 👤 Maurizio De Mattia
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 09:10
CPC Classifications
B; B01; B01D; B01D65/00; B01D65/02; B01D37/00; B01D37/04; B01D61/00; B01D61/14; B01D61/22; C; C12; C12H; C12H3/00; C12H3/04; B01D2321/00; B01D2321/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
303 words
Automatic system for controlling and optimising of an ultrafiltration process in foodstuffs and/or chemical and/or chemical/pharmaceutical industrial plants, said process being suitable for carrying out a separation between two chemical species by means of the passage of a predetermined product through one or more porous polymeric membranes belonging to a filtration section of a plant, said plant further comprising a chemical regenerating section and a washing section, the carrying out of said process being controlled by means of physical, chemical, mechanical, fluids-dynamical and microbiological parameters such as, for instance, permeation speed, product turbidity, pressure, rate of flow, chlorine concentration, pH, temperature, characterised in that it comprises a plurality of detectors-transducers suitable for istantaneous- ly transforming detected values of said parameters into electric signals, said signals being fed, during a process phase, to a microprocessor suitable for elaborating said electric signals and for supplying an electronic computer with istantaneous data relating said process phase, in that said computer is suitable for comparing said data with predetermined threshold data which are relative to parameters of the same kind, and for carrying out a combined analysis of the data relative to parameters of a given kind, whose variation exerts an influence on the behaviour of parameters of another kind, with the istantaneous data relative to the latter, and in that said computer is suitable for allowing the prosecution of the process in the case where the result of said combined analysis would fall within a first predetermined range of values, for sending alarm signals to acoustic and/or visual signalling devices in the case where the result of said combined analysis would fall within a second predetermined range of values, and for stopping the process in the case where the result of said combined analysis would consist in a value exceeding said second predetermined range of values.
Claim 2
Dependent Claim
303 words
Automatic system for controlling and optimising of an ultrafiltration process in foodstuffs and/or chemical and/or chemical/pharmaceutical industrial plants, said process being suitable for carrying out a separation between two chemical species by means of the passage of a predetermined product through one or more porous polymeric membranes belonging to a filtration section of a plant, said plant further comprising a chemical regenerating section and a washing section, the carrying out of said process being controlled by means of physical, chemical, mechanical, fluids-dynamical and microbiological parameters such as, for instance, permeation speed, product turbidity, pressure, rate of flow, chlorine concentration, pH, temperature, characterised in that it comprises a plurality of detectors-transducers suitable for istantaneous- ly transforming detected values of said parameters into electric signals, said signals being fed, during a process phase, to a microprocessor suitable for elaborating said electric signals and for supplying an electronic computer with istantaneous data relating said process phase, in that said computer is suitable for comparing said data with predetermined threshold data which are relative to parameters of the same kind, and for carrying out a combined analysis of the data relative to parameters of a given kind, whose variation exerts an influence on the behaviour of parameters of another kind, with the istantaneous data relative to the latter, and in that said computer is suitable for allowing the prosecution of the process in the case where the result of said combined analysis would fall within a first predetermined range of values, for sending alarm signals to acoustic and/or visual signalling devices in the case where the result of said combined analysis would fall within a second predetermined range of values, and for stopping the process in the case where the result of said combined analysis would consist in a value exceeding said second predetermined range of values.
Claim 3
Dependent Claim
20 words
System according to claim 1, characterised in that said computer is provided with communication and/or recording means of said data.
Claim 4
Dependent Claim
40 words
System according to one of claims 1 and 2, characterised in that said computer is provided with security means suitable for holding said data in memory, during said process, in the case of a power supply failure of said plant.
Claim 5
Dependent Claim
104 words
Ultrafiltration process of chemical species, said process being carried out by means of an automatic plant and comprising the following operating phases: a) filtration of a predetermined chemical species by means of the passage of the latter through a filtration section comprising at least one porous membrane; b) regeneration of said at least one membrane by means of treatment with predetermined chemical reagents; c) steam washing of the pipelines of said plant, characterised in that said process is carried out by means of an automatic system for controlling and optimising of said operating phases according to that described in one of the preceeding claims.
References Cited (Backward Citations)
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