CN212864683U

CN212864683U - Circulating anti-corrosion equipment for top of fractionating tower

Info

Publication number: CN212864683U
Application number: CN202021282943.5U
Authority: CN
Inventors: 孙彤博; 果纳
Original assignee: Shenyang Hengda Xintong Technology Co ltd
Current assignee: Shenyang Hengda Xintong Technology Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-04-02
Anticipated expiration: 2030-07-03

Abstract

The utility model provides a be used for fractionating tower top to follow anti-corrosion equipment relates to a petroleum refining technical field. The utility model discloses an including the fractionating tower, still including the circulating line, the circulating line sets up in the fractionating tower upper end, is provided with desalination water tank, blender and dehydrator on the circulating line, and the fractionating tower passes through first branch road and desalination water tank intercommunication, and the desalination water tank passes through second branch road and blender intercommunication, the one end of blender and the one end intercommunication of dehydrator, and the other end of dehydrator passes through third branch road and fractionating tower intercommunication. The utility model discloses simple structure does not increase unnecessary public works energy consumption, and economic nature is good, need not to add any medicament, and is easy and simple to handle, maintains effectually.

Description

Circulating anti-corrosion equipment for top of fractionating tower

Technical Field

The utility model relates to a petroleum refining technical field especially relates to one kind and is used for fractionating tower top to follow anticorrosion equipment.

Background

With the continuous exploitation of oil fields in the world, the original proportion of the oil fields with high quality after the exploitation is less and less, and the content of salts and sulfides in the oil fields is gradually increased. The prior oil refining technology mainly adopts a rectification technology, mainly uses a fractionating tower as equipment, and causes salt deposition on a tower tray of the fractionating tower and serious corrosion of hydrogen sulfide due to the rising of salts and sulfides in crude oil. Particularly, salt deposition corrosion is the most serious on a tower tray at the top of the fractionating tower, and subsequent product processing and economic benefits are seriously influenced.

At present, the adopted anticorrosion technology mainly comprises the following steps: the problems of adding the slow-release scale inhibitor, injecting water and washing salt and replacing a tower tray made of an anti-corrosion material are always a serious problem for refining and chemical enterprises due to the problems of high cost, unobvious effect and the like.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists in the above-mentioned problem, the utility model provides a petroleum refining technical field makes its simple structure, does not increase unnecessary public engineering energy consumption, and economic nature is good, need not to add any medicament, and is easy and simple to handle, maintains effectually.

In order to solve the problem, the utility model provides a be used for fractionating tower top to follow anti-corrosion equipment, including the fractionating tower, wherein, still include the circulation pipeline, the circulation pipeline sets up the fractionating tower upper end, be provided with demineralized water tank, blender and dehydrator on the circulation pipeline, the fractionating tower through first branch road with the demineralized water tank intercommunication, the demineralized water tank pass through the second branch road with the blender intercommunication, the one end of blender with the one end intercommunication of dehydrator, the other end of dehydrator pass through the third branch road with the fractionating tower intercommunication.

Preferably, the dehydrator comprises a settling tank, a liquid inlet is arranged at the left end of the settling tank, a water outlet is arranged at the lower end of the settling tank, an oil outlet is arranged at the upper end of the settling tank, and the oil outlet is communicated with the fractionating tower through the third branch.

Preferably, an inlet at the lower end of the mixer is communicated with the second branch, and an outlet at the upper end of the mixer is communicated with a liquid inlet at the left end of the settling tank.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model discloses simple structure does not increase unnecessary public works energy consumption, and economic nature is good, need not to add any medicament, and is easy and simple to handle, maintains effectually.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples, which are not intended to limit the present invention.

As shown in fig. 1, the embodiment of the present invention includes a fractionating tower 1, and further includes a circulation pipeline, the circulation pipeline is disposed at the upper end of the fractionating tower 1, the circulation pipeline is provided with a demineralized water tank 2, a mixer 3 and a dehydrator 4, the fractionating tower 1 is communicated with the demineralized water tank 2 through a first branch 5, the demineralized water tank 2 is communicated with the mixer 3 through a second branch 6, one end of the mixer 3 is communicated with one end of the dehydrator 4, and the other end of the dehydrator 4 is communicated with the fractionating tower 1 through a third branch 7. The dehydrator 4 comprises a settling tank, the left end of the settling tank is provided with a liquid inlet, the lower end of the settling tank is provided with a water outlet, the upper end of the settling tank is provided with an oil outlet, and the oil outlet is communicated with the fractionating tower 1 through a third branch. The inlet at the lower end of the mixer 3 is communicated with the second branch 6, and the outlet at the upper end of the mixer 3 is communicated with the liquid inlet at the left end of the settling tank.

In the embodiment, firstly, a bypass is added on a return line of a tray with salt deposition and corrosion, 10-20% of the return flow is extracted, secondly, a mixer is added on the bypass line and is connected into a desalting water line, the water injection amount is 3-5% of the extraction amount, and CL ions and sulfides in oil are extracted by water by means of strong mixing of the mixer. And finally, after the mixed oil-water mixture is dehydrated by a settling tank, returning the oil to a tower tray return line, and allowing the water phase to enter an acidic water system.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.

In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it is to be understood that they have been presented by way of example only, and not limitation, and that changes, modifications, substitutions and alterations may be made thereto by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a be used for fractionating tower top to follow anti-corrosion equipment, includes the fractionating tower, its characterized in that still includes the circulation pipeline, the circulation pipeline sets up the fractionating tower upper end, be provided with demineralized water tank, blender and dehydrator on the circulation pipeline, the fractionating tower through first branch road with demineralized water tank intercommunication, the demineralized water tank through the second branch road with the blender intercommunication, the one end of blender with the one end intercommunication of dehydrator, the other end of dehydrator through the third branch road with the fractionating tower intercommunication.

2. The anti-corrosion apparatus for the top circulation of the fractionating tower according to claim 1, wherein said dehydrator comprises a settling tank, a liquid inlet is disposed at a left end of said settling tank, a water outlet is disposed at a lower end of said settling tank, an oil outlet is disposed at an upper end of said settling tank, and said oil outlet is communicated with said fractionating tower through said third branch.

3. The apparatus for corrosion protection of a fractionation column overhead circulation of claim 2, wherein an inlet at a lower end of said mixer is in communication with said second branch and an outlet at an upper end of said mixer is in communication with a liquid inlet at a left end of said settling tank.