Abstract:
A system for reduction a system for reduction of emissions from volatile liquid cargo within a pipe work supplying cargo into a cargo tank, the pipe work including an upper pipe segment (1.1) and a lower pipe segment in the form of a mainly vertical drop pipe (1.4) terminating near the bottom of the cargo tank, and having means controlling the pressure within the pipe work during loading. According to the present invention a flow restricting device is installed in the upper pipe segment (1.1) in front of the drop pipe (1.4) so as to assure positive pressure throughout the upper pipe segment, and the drop pipe (1.4) is provided with a perforated pressure equalization pipe (1.7) and a free flow dampening device (1.6) surrounding pressure equalization pipe, the upper portion of the drop pipe above the upper pipe segment (1.1) is provided with a top section (1.5) so as to form a gas collecting as well as pressure monitoring and controlling volume communicating with the pressure equalization pipe of emissions from volatile liquid cargo
Abstract:
A secondary containment cap apparatus (10) for a turret (T) of a hazardous fluid primary container (20) having a primary container wall (22) with a primary container turret opening having a turret opening perimeter wall (16), the secondary containment cap apparatus (10) including a valve mounting plate (12) extending over and covering the turrent (T) opening in sealing relation with the perimeter wall (16), the valve mounting plate (12) having at least one valve port (24) fitted with a fluid passing container valve (26); a containment cap (14) including a cap wall (30) with a concave cap interior and a cap abutment port (32), the cap abutment port (32) having a cap abutment port rim (34), the containment cap (14) being secured onto the valve mounting plate (12) so that the container cap (14) covers and encloses the fluid passing container valve (26), the cap abutment port rim (34) being sealingly retained to the valve mounting plate (12); and a cap attachment structure (52) securing the valve mounting plate (12) to the perimeter wall (16).
Abstract:
Esta invención se refiere, al mecanismo de unión hermética tipo candado mecánico, para unir el conjunto de paneles que conforman la membrana interna flotante tipo panal de abeja no perforado, la cual nos permite obtener una unión altamente resistente, durable, libre de fugas en la unión de los marcos perimetrales de cada panel, la cual es totalmente hermética, no permitiendo el paso de vapores o producto liquido a la parte superior de la membrana debido al empaque intermedio, evitando así que los paneles, se puedan separar por turbulencia o sismo, logrando así un conjunto de alta resistencia estructural. El objeto de esta invención, es proporcionar una unión entre los paneles que conforman la membrana interna flotante tipo panal de abeja no perforado, que es altamente eficiente y aunque similar, es totalmente diferente a los diseños existentes en el mercado, gracias a un diseño y a una construcción novedosa, cuya principal característica, es que reúne las características similares de otros diseños, pero con mayor eficiencia, seguridad y durabilidad.
Abstract:
A system for reduction a system for reduction of emissions from volatile liquid cargo within a pipe work supplying cargo into a cargo tank, the pipe work including an upper pipe segment (1.1) and a lower pipe segment in the form of a mainly vertical drop pipe (1.4) terminating near the bottom of the cargo tank, and having means controlling the pressure within the pipe work during loading. According to the present invention a flow restricting device is installed in the upper pipe segment (1.1) in front of the drop pipe (1.4) so as to assure positive pressure throughout the upper pipe segment, and the drop pipe (1.4) is provided with a perforated pressure equalization pipe (1.7) and a free flow dampening device (1.6) surrounding pressure equalization pipe, the upper portion of the drop pipe above the upper pipe segment (1.1) is provided with a top section (1.5) so as to form a gas collecting as well as pressure monitoring and controlling volume communicating with the pressure equalization pipe of emissions from volatile liquid cargo
Abstract:
Disclosed herein is a water tank, which can maintain the internal pressure uniformly and prevent evaporation of circulation water. The water tank includes: a water container having a recovery hole and a supply hole for inflow and outflow of circulation water for heat exchange, a portion of the water container being opened to the air; and expandable means expandably mounted on the opened portion of the water container and hermetically sealing the opened portion of the water container.
Abstract:
Floating roof storage tanks (10) are modified to include a foam surge tank (28), a low-pressure blower (44) and a foam generator (48) for generating vapor-suppressing foam during withdrawal of liquid from the storage tank and after the floating roof (16) reaches its lowest elevation in the storage tank so that the tank space previously occupied by volatile liquid is provided with a vapor-suppressing foam blanket during liquid withdrawal and refill. The surge tank is mounted directly on the floating roof and discharges its foam through an opening in the roof into the tank storage space. During liquid refill the foam may be forced out through a vent conduit (58) onto the roof of the tank and dissolved and recovered.
Abstract:
A temporary hood for capturing vapors exiting from a material storage compartment of a vessel when the compartment is opened includes a base frame that extends around an opening to the compartment and is releasably secured to the vessel. An upper framework is releasably coupled to the base frame and extends upwardly from the vessel around the opening. A plurality of panels is releasably engageable with the upper framework and form an enclosure around the opening. At least one vapor discharge outlet fluidly communicates with the material storage compartment and a vacuum pump to allow the capture of vapors exiting from the opening when the cover is opened and the temporary hood is engaged with the vessel.
Abstract:
The present invention relates to an arrangement and a method for preventing or controlling the emission of gases from a fluid (9) to the surroundings, the fluid (9) residing in a tank (2). According to the invention a floating cover (8) is arranged on top of the fluid (9), the floating cover (8) having a density that keeps it stable on top of the fluid (9) in the tank (2) and impenetrable for those gases that are to be contained, wherein a float (10) comprising a standpipe (11) floats on top of the floating cover, the standpipe (11) extending mainly vertically through the floating cover (8) and, in a controlled manner, collecting or letting through the gas that is released or formed in the fluid (9).
Abstract:
A method and a device for reducing the evaporation of volatile organic compounds (VOC) when an essentially liquid petroleum product is being filled into a storage and/or s transport tank (16) through a drop line (14), possibly also through a loading point (8), in which a gas or mixture of gases is supplied to the upper portion of the drop line (14) or the loading point (8) during the filling operation.
Abstract:
A method and a device for diminishing the amount of volatile compounds that is exhausted from a non-pressurized vessel provided with a ventilation tube (2) and containing said volatile compound of liquid and gaseous phases in equilibrium with each other, said volatile compound being carried out to the environment by the created vapor pressure through a tube (4) provided with bends and connected to said ventilation tube (2). The volatile compound of gaseous phase is led through multiple helically wound tubes (4) arrayed in parallel.