RU2016826C1 - Arrangement for storing volatile petroleum products - Google Patents

Abstract

FIELD: petroleum refining. SUBSTANCE: tank has floating pipe whose inlet is connected through flexible pipe with nozzle to which gas discharge pipe is connected. Outlet of the pipe is provided with disk-type baffle and headpiece with non-return valve. EFFECT: more reliable storage. 2 dwg

Description

 The invention relates to the storage of evaporating products and may find application in the oil refining, oil and chemical industries, as well as on the basis of storage of petroleum products.

 At present, the bottom water drained from oil reservoirs is directed to oil traps, where light oil products dissolved in it evaporate. Evaporating oil is a source of air pollution.

 A known installation for storing evaporating products, equipped with a degasser of produced water with nozzles, a degasser of produced water is made in the form of a tank with inclined wavy decking in the direction perpendicular to the direction of water movement, the outlet line of produced water from the reservoir is connected to the nozzles of the said degasser, the latter are lowered to the upper troughs of waves, and the upper part of the degasser from the side opposite to the input of produced water is connected to the gas space of the reservoir [1].

 The disadvantage of this device is the impossibility of its use for tanks with floating roofs and pontoons and tanks with stationary caps that are not combined by a gas equalization line, as well as lack of efficiency in terms of the lack of a solution for the absorption of released gases by the original oil product.

 The purpose of the invention is the expansion of technological capabilities.

 This is achieved due to the fact that the installation is additionally equipped with a unit floating under the product level for directing the gas medium from the degasser to the upper layers of the oil product, consisting of a pipe, the inlet end section of which is connected through a flexible flexible pipe to the tank fitting to which the gas outlet pipe is connected water degasser, and the outlet end of the nozzle has a horizontally located floating disk reflector and a nozzle with a self-closing elastic valve - a check valve nom.

 A pipe floating below the level of the product ensures the presence of a layer of the stored product above its outlet that is necessary for contact with the vapor of oil products for their absorption, eliminates from loss.

 The presence of a flexible elastic pipe ensures the preservation of the necessary depth of immersion of the pipe into the product when the level of oil product spill is changed.

 The presence of a horizontally located floating disk reflector above the outlet of the nozzle provides a change in the direction of movement of the emitted vapors from vertical to horizontal, which increases the contact time of the vapor with the oil to necessary for vapor absorption.

 In FIG. 1 shows an installation for storing evaporated oil products, general view; figure 2 - node I in figure 1.

 The installation for storing evaporated oil products consists of a tank 1 with oil supply and pumping lines and breathing valves, a degasser 2 of bottom water connected to the tank 1 by a line 3 of bottom water outlet and a line 4 of gas exit from the degasser connected to the tank nozzle 5, whose internal fitting through a flexible elastic pipe 6 is connected to a node for directing a gaseous medium from a degasser, consisting of a pipe 8 floating on a float 7, the outlet end section of which is horizontally provided aspolozhennym floating disk reflector 9 and a nozzle 10 with an elastic self-closing valve 11 - return valve. The tank 1 can be equipped with a device 12 in the form of a floating roof or a pontoon, and the degasser of produced water is equipped with a line 13 for the output of degassed produced water. Valves are installed on lines 3 and 4. The pipe 8 with a float 7 and a disk reflector 9 can be flexibly connected to a pontoon or a floating roof.

 Installation for storing evaporating oil products is as follows.

 When commercial water in tank 1 reaches a predetermined level, valves are opened on line 3 of bottom water withdrawal from the tank and on line 4, as a result of which under the action of a hydrostatic column of product in tank 1, overflow water flows through line 3 to degasser 2, in which the pressure drop in the tank that occurs when the bottom water is discharged, and the action of the height of the liquid column is eliminated, the bottom water is degassed. Degassed bottom water through line 13 is discharged through a siphon to the sewer. Gases released from the water from the degasser 2 through line 4, pipe 8, and elastic conduit 6 enter the pipe 8 floating on the float 7. Leaving pipe 8 through the nozzle 10, encountering a floating disk reflector 9, the gases change direction and move horizontally beneath it, come into contact with the oil product, which contributes to their absorption by the latter. At the end of the drainage of produced water, the valves on lines 3.4 are closed, the flow of gases and vapors into the pipeline 6 and pipe 8 is stopped, and the check valve 11 closes under the action of the upstream hydrostatic column of the oil product.

 The present invention extends the scope of degassing of produced water without the expense of energy with the use of degassers installed directly in the place of drainage of water, and provides the possibility of absorption of released gases by the original product. With the application of the invention, it becomes possible to use degassers for almost all types of tanks. Degassing of drained produced water at the drainage site with the return of the released gases to the tank and absorption by the initial product ensures the utilization of gases, which helps to increase the use of fuel resources and reduce environmental pollution and can be used to utilize the gases released during the filling of evaporated products into vehicles and returning along the equalization line to the source tank.

Claims (1)

 INSTALLATION FOR STORAGE OF VAPORIZING OIL PRODUCTS, including a tank with oil supply and pumping lines and a degasser of bottom water connected to it, having nozzles for removing degassed bottom water and gas, characterized in that, in order to expand technological capabilities, it is equipped with an assembly for the direction of the gas medium from the degasser to the upper layers of the oil product, consisting of a nozzle located on the float, having a disk reflector and an inverse elastic over the output end first valve, the inlet pipe end portion by means of the elastic tube is connected to the gas discharge nozzle.

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