SU1710499A1 - Method and apparatus for dispensing oil products into train of transport containers - Google Patents

Abstract

The invention relates to methods and devices for filling liquids, mainly petroleum products, in a tank, and can be used when loading petroleum products into the route of transport tanks at loading points. The aim of the invention is to reduce the loss of the vapor-gas phase of an oil product by condensing it during cooling. The vapor-gas mixture (phase) formed during the pouring of oil into the tank is discharged into the condenser, where it passes through the stack of heat transfer plates in contact with the solid refrigerant, condenses to form a liquid phase and discharges the gas phase into the atmosphere, and the gasified refrigerant is discharged through the pipeline into another transport capacity until the air is completely expelled from it to cool it, which reduces the amount of vapor-gas phase formed during pouring. 2 Il.S /) C

Description

The invention relates to methods and devices for loading liquids, mainly oil products, in a container, and can be used when filling oil products in the route of transport containers at loading points.

The aim of the invention is to reduce the loss of the vapor-gas phase of an oil product by condensing it during cooling.

FIG. 1 shows the scheme of filling liquids according to the proposed method; in fig. 2 - capacitor, cut.

The method of loading petroleum products into the route of the transport tanks is as follows.

The oil product is pumped from the storage facility to the transport tank, the resulting vapor-gas phase is diverted through the pipeline to the condenser with

heat transfer plates and solid refrigerant gasify the condensate formed during the cooling of the vapor-gas phase, and the gasified refrigerant is discharged through the pipeline into the next, designed to fill it to cool it until the air is completely displaced, and the area of the heat transfer plate pack is calculated by formula

p Gn

  m2

K-at

where Gn is the gas-vapor mixture flow rate, kg / s;

Гп - heat of vaporization of the oil product, J / kg;

K - heat transfer coefficient through the plate, W / m deg .;

At ti-t2 is the temperature difference between the mixture and the product, respectively, at the inlet and outlet ° C. de package heat transfer plates.

The method is carried out by means of a device that contains pipeline 1 for supplying oil to tank 2, pipe 3 for withdrawing the vapor-gas phase (mixture), condenser 4 and pipe 5 for draining gasified refrigerant into another container 6. Condenser 4 consists of a heat-insulated casing 7 with a lid 8, in which two holes 9 are made, a stack of plates 10 with rigidly fixed nozzles 11 and 12 located in the openings 9 with the possibility of movement, and an opening 13 for draining the condensate with the plug 14 and the nozzle 15 for withdrawing gasified refrigerant. Condenser 4 is filled with solid refrigerant 16.

The method is illustrated by the example of the operation of the device, which operates as follows.

The oil product is pumped through pipeline 1 to tank 2 and displaces the resulting vapor-gas mixture through pipe 3 to condenser 4 to a package of 10 heat transfer plates in contact with solid refrigerant 16 (for example, carbon dioxide), and condenses into liquid phase, heat absorption refrigerant 16 enters the gas phase and is discharged through pipe {3, conduit 5 into the next tank 6, the air is displaced from it and its walls are cooled, the stack 10 is lowered under its own weight, and the gas (air) separated from the product is ejected into the atmosphere through the pipe 12.

The condensed product is drained from the bag 10 through the opening 13.

Re-use of the refrigerant to cool the subsequent filling tank reduces the amount of vapor-gas phase formed and prevents the formation of a snow coat on the surface of the condenser 4.

Claims (2)

Formula 1. Method of filling oil products in the route of transport tanks, including pumping oil by pump through the discharge pipeline from storage to transport capacity and discharging the vapor-gas phase from it, characterized in that, in order to reduce losses of the vapor-gas phase of the oil product, the latter is diverted to the condenser with package heat transfer plates, gasify the solid refrigerant in it, the condensate formed in the condenser, and the gasified refrigerant is drained into the next the tank for its cooling to completely expel air from it, and the area of the package of heat transfer plates is calculated by the formula Gn Gp 2 g m KAt where Gn - steam-air mixture consumption, kg / s; Gp-heat vaporization of petroleum products, j / kg; K - heat transfer coefficient through the plate, (W / m-deg); At-ti-t2 is the difference between the temperatures of the mixture and the product at the entrance and the plate pack, respectively, ° C. 2. A device for loading petroleum products into the route of transport tanks containing a discharge pipe and a nozzle for withdrawing the vapor-gas phase. mounted in a sealing lid, so that, in order to reduce the loss of the vapor-gas phase of the oil product, it is equipped with a condenser installed on the branch pipe, including the casing filled with a solid refrigerant with a branch pipe for discharge gasified refrigerant installed in the housing with the possibility of axial movement of a package of heat transfer plates with inlet and outlet pipes and a hole with a stopper for draining condensate.