Crude oil dehydrating silt-removal pretreatment device and application method thereof

Abstract

The invention relates to a crude oil dehydrating silt-removal pretreatment device and an application method thereof. The crude oil dehydrating silt-removal pretreatment device consists of a barrel, a crude oil inlet pipe, an emulsion breaker inlet pipe, a water phase outflow pipe, an oil phase outflow pipe, filler and a silt outflow pipe; the upper part of the barrel is in a cylindrical shape, the lower part of the barrel is in a conical shape, and the barrel is naturally full filled with the filler; the crude oil inlet pipe is arranged on one side of the cylindrical lower part of the barrel and enters the barrel in a tangential manner; the emulsion breaker inlet pipe is connected onto the crude oil inlet pipe; the water phase outflow pipe is arranged at the center of the top of the device, the water phase outflow pipe is vertically inserted into the barrel, the bottom end of the water phase outflow pipe is closed, and the section of circular pipe wall from the bottom end of the water phase outflow pipe to the lower edge of the crude oil inlet pipe is uniformly provided with pores; the oil phase outflow pipe is arranged at the top of the device and on one side of the water phase outflow pipe; the silt outflow pipe is arranged at the lowest position of the barrel and at the center of the conical lower part of the barrel. By combination of the emulsion breaking effect of the collision friction between the silt-containing crude oil emulsion and the hydrophilic filler and the cyclone centrifugal separation effect, more than 60 percent of water in the crude oil can be rapidly removed, and the structure is simple.

Description

technical field [0001] The invention relates to a crude oil dehydration and sediment removal pretreatment device and its use method, in particular to a device capable of dehydration and sediment removal pretreatment of crude oil containing water and sediment and its use method. Background technique [0002] Crude oil extracted from the ground is a very complex system. In terms of phase state, remove a large amount of free and visible associated water to obtain an oil phase, which also contains a lot of emulsified water and a little sand from the formation. From the needs of crude oil pipeline transportation and refining, it should be Water and sediment in crude oil are removed as much as possible. [0003] Common crude oil pretreatment methods include thermal sedimentation, chemical demulsification, electric field dehydration, and the combination of these methods. These methods can generally achieve the effect of crude oil dehydration, desalination, and sediment removal. Ho...

AI Technical Summary

Problems solved by technology

[0003] Common crude oil pretreatment methods include thermal sedimentation, chemical demulsification, electric field dehydration, and the combination of these methods. These methods can generally achieve the effect of crude oil dehydration, desalination, and sediment removal. However, using the above methods to complete the separation of complex systems The equipment is generally relatively large, and the material separation time is relatively long, especially the separated sediment cannot be conveniently discharged from the device. These problems make the production and operation cost of crude oil pretreatment high and affect its economy.

Images