Abstract:
The present invention relates to a pressure swing adsorption process, also known as PSA process, which is modified with a view to utilizing the heat from the post-adsorption stream coming from the molecular sieves to heat/vaporize the pre-adsorption stream containing the hydrated product or the mixture component(s) to be adsorbed in said sieves. The present invention provides alternative arrangements for the heat exchanger system in order to use the thermal potential of the post- adsorption stream with the elimination or minimization of the risk of a slug flow regime in the exchangers, the so-called "gush," which would be a natural result from the periodic oscillation characteristic of PSA processes. With this, the vapor consumption with the modified process according to the present invention is considerably reduced.
Abstract:
According to the specific teachings of this invention, a permanently elastic layer (7) is applied to one of the side faces of the bar (3) prior to introduction into the groove (1). Since the width of the groove is slightly smaller than the total breadth of the bar (3), including the breadth of the elastic layer (7), the latter will press the bar strongly against said side wall of the groove (1), fixing the bar (3) securely during the useful life of the electric machine. The present invention further provides a method for automatization of the application of permanently elastic layer (7).
Abstract:
It is described a single-phase or three-phase distribution electric transformer, of solid insulation, for use in aerial installation, in poles, in platforms or pedestals, or installation in underground distribution network for operation in air environment, semi-submerged or submerged. Such transformer comprises at least one high voltage winding (3) and at least one low voltage winding (2) concentrically assembled around a core column (1.2,1.3), the low voltage and high voltage windings (2,3) being electrically isolated from a solid material, a core window (20) being defined as a space between two core columns (1.2,1.3), the transformer comprising at least one electrical insulation sheet (4) assembled on at least a core window (20) of said transformer, the assembly of the electrical insulation sheet (4) being defined in the longitudinal direction (300) of the transformer. Such sheet (4) avoids the formation of spiral around the core by immersion water or conductive dust. The use of this dry transformer in the underground distribution networks in the cities offers more safety to the population, because the dry transformer does not explode, apart from eliminating the risk of environmental contamination through the leakage of oil from transformers in oil. Once the dry transformer of the invention does not explode, the underground installation chambers can be simpler and more economic once they do not need to be resistant to explosion.
Abstract:
A centralized telephone control and blockage system which implements an anti-tampering system (anti-fraud blockage system) for Public Use Telephones (PUT) is described. The system comprises (i) an exchange of origin (20) to which multiple telephones are associated (10); (ii) an exchange of destination (11) to which multiple telephones are associated; and (iii) at least one gateway (30) associated to the exchange of origin (20) and/or to the exchange of destination (11); the gateway (30) receiving and allocating calls coming from the exchange of origin (20), the calls allocated having anti-tampering devices, the gateway (30) associating origin to destination through a voice path (16). A gateway (30) especially used in a telephone control and blockage system is also described, as well as a method of controlling and blocking telephones which may be used in the system and gateway according to the invention.
Abstract:
The present invention relates to a dry distribution transformer comprising a housing (1'), a coil (200), a sealed compartment (100) and a taps panel (1 10) associated to the coil (200). The taps panel (110) has an electrostatic shield (107) and is positioned inside the sealed compartment (100), the sealed compartment (100) being filled with a solid dielectric material and protected by a cover (120). One also describes an electric insulation method for a taps panel of a dry distribution transformer and taps panel for a dry distribution transformer filled with removable insulating resin. The coil (200) has a grounded (115) electrostatic shield (107).
Abstract:
The present invention relates to a dry distribution transformer (1) comprising at least one low-voltage winding (2) and one high-voltage winding (3), concentrically mounted around a core column (1.1, 1.3). The transformer (1) comprises at least one cooling circuit (7) associated to at least one low-voltage winding (2) and/or one high-voltage winding (3). Such a cooling circuit (7) is electrically insulated with respect to the low-voltage and high-voltage windings (2, 3). In addition, the cooling circuit (7) is capable of enabling circulation of a cooling fluid inside it. Additionally, the cooling circuit (7) is provided with a constructive arrangement configured to involve partly the core column (1.2, 1.3), that is, the constructive arrangement is configured not to form a turn around the core column (1.1, 1.3). The cooling circuit (7) is provided with cooling ducts (6), each cooling duct (6) having a cross section that partly involves a cross section of the core column (1.2, 1.3).
Abstract:
The present invention refers to a system which shows a wireless and cableless connection solution for remotely monitoring and controlling several parameters of voltage regulators associated to an electrical power distribution network. Thus, a remote monitoring and control system of voltage regulators is described, comprising at least one remote terminal (300) remotely interacting with at least one voltage regulators bank (200) through a central station (100), the voltage regulators bank (200) being associated to at least one electrical power distribution network, the voltage regulators bank (200) being provided with at least one voltage regulator (201 ) reachable by the remote terminals (300) through the central station (100) at of at least one wireless network provider (400).
Abstract:
The present invention relates to a Gateway (100) of Supplementary Services, PABX and Centrex, which makes available supplementary services to subscribers, PABX and Centrex subscribers, in a centralized and uniform way, to any type of subscriber (analog, digital, V5.x, wireless, movable cell telephone or public telephone) belonging to the Commuted Public Telephone System (CPTS), connected to the telephone central of any technology (analog or digital) of any size (large-size, medium-size or small-size). One of the objectives of the present invention is achieved by means of a system of centralizing services to subscribers of various origins in telephone networks, the system being characterized by comprising: a Gateway (100) provided with a central control unit (1); a subscriber service unit (3); a database and data storing unit (5); the central control unit (1) being associated to a telephone network, the telephone network comprising centrals of the public network, the subscriber service unit (3) comprising functions of answering subscribers, stored in the database and data storing unit (5), the Gateway (100) comprising, in the database and data storing unit (5), a virtual calling number of the subscriber, the virtual number of the subscriber corresponding to the subscriber recognition number in the telephone network, the subscriber recognition number being deleted from the local central of the public network associated to the subscriber and transferred to the Gateway (100).
Abstract:
The present invention relates to a Gateway of Supplementary Services, PABX and Centrex, which makes available supplementary services to subscribers, PABX and Centrex subscribers, in a centralized and uniform way, to any type of subscriber (analog, digital, x DSL, V5.x, wireless, movable cell telephone or public telephone) belonging to the Commuted Public Telephone System (CPTS), connected to the telephone central of any technology (analog or digital) of any size (large-size, medium-size or small-size). One of the objectives of the present invention is achieved by means of a system of centralizing services to subscribers of various origins in telephone networks, the system being characterized by comprising: a Gateway (100) provided with a central control unit (1); a subscriber service unit (3); a database and data storing unit (5); the central control unit (1) being associated to a telephone network, the telephone network comprising centrals of the public network, the subscriber service unit (3) comprising functions of answering subscribers, stored in the database and data storing unit (5), the Gateway (100) comprising, in the database and data storing unit (5), a virtual calling number of the subscriber, the virtual number of the subscriber corresponding to the subscriber recognition number in the telephone network, the subscriber recognition number being deleted from the local central of the public network associated to the subscriber and transferred to the Gateway (100).
Abstract:
The present invention relates to a process and a system for producing alcohol by distillation with energy optimization using split-feed technology. The process of the present invention comprises the steps of: a) splitting a stream of wine (1) to feed two depuration columns (2, 3), the depuration column (2) generating a stream of phlegma (4) and the depuration column (3) generating a stream of phlegma (5) and a stream of vinasse (6); b) feeding the stream of phlegma (4) into at least one rectification column (7) generating a top flow (8) and a stream of hydrated alcohol (9); c) effecting the heat exchange between the top flow (8) from at least one rectification column (7) and the stream of vinasse (6) from the depuration column (3) in at least one heat exchanger (10); and d) feeding the stream of phlegma (5) into a rectification column (11 ) generating a stream of hydrated alcohol (12). The present invention further relates to hydrated alcohol produced by the process described above and to a process for producing anhydrous alcohol.