Extraction apparatus for crude oil pretreatment
By installing a heater and aeration mechanism in the crude oil pretreatment unit, and using high-pressure gas to stir the solution, the problem of boiling over during the heating process is solved, and safe and efficient detection of crude oil salt content is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CERTIFICATION & INSPECTION GRP NINGBO
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-14
AI Technical Summary
In existing methods for detecting the salt content of crude oil, if the heating voltage is too low, the solution will not boil easily; if the heating voltage is too high, explosive boiling may occur, posing a safety hazard.
Design an extraction device including a distillation flask, a reflux condenser, a liquid addition tube, a heating mechanism, and a gas venting mechanism. The solution is heated by a heater and simultaneously stirred by high-pressure gas to ensure uniform boiling and prevent bumping.
This achieves uniform boiling of the solution, eliminates safety hazards, and improves the safety and efficiency of the detection process.
Smart Images
Figure CN224500113U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of experimental device technology, specifically to an extraction device for crude oil pretreatment. Background Technology
[0002] Crude oil contains salt, and salt content is an important indicator for testing crude oil. The salt content of crude oil needs to be tested before processing.
[0003] The current method for detecting the salt content in crude oil is as follows: a certain amount of crude oil sample is weighed and dissolved in an organic solvent. The mixed solution is then added to the flask of the extraction device. The flask is heated to boiling point using a heater. After boiling for a certain period of time, the solution is cooled to allow the mixed solution to separate into layers. The lower layer solution is then extracted to determine the salt content in the crude oil.
[0004] The inventors of this application have discovered that when a mixed solution is heated in a flask, if the heating voltage is too low, the speed is slow and the solution is not easy to boil; if the heating voltage is too high, the solution will be heated unevenly, and it is very easy to cause explosive boiling when it reaches the boiling point, which will cause the solution to overflow the flask and pose a safety hazard. Utility Model Content
[0005] The purpose of this invention is to provide an extraction device for crude oil pretreatment to solve the problems mentioned in the background art.
[0006] This utility model provides an extraction device for crude oil pretreatment, comprising: a distillation flask, a reflux condenser, a liquid addition pipe, a heating mechanism, and a ventilation mechanism;
[0007] The distillation flask is provided with a liquid outlet branch at the bottom and three through holes at the top;
[0008] The reflux condenser, the liquid addition tube, and the venting mechanism are respectively installed in the three through holes and are sealed to the distillation flask.
[0009] Both the liquid outlet branch pipe and the liquid inlet pipe are equipped with control valves;
[0010] The ventilation mechanism includes: a ventilation pipe and a high-pressure air source;
[0011] The vent pipe passes through the through hole, extends into the distillation flask, and is connected to the high-pressure gas source via a connecting hose. The vent pipe is used to stir the solution in the distillation flask when venting.
[0012] The heating mechanism includes: a heater and a controller;
[0013] The heater is mounted on the liquid outlet branch pipe and is electrically connected to the controller.
[0014] Based on the above scheme, the extraction device for crude oil pretreatment of this utility model includes a distillation flask, a reflux condenser, a liquid addition pipe, a heating mechanism, and a venting mechanism. The distillation flask has an outlet branch pipe and three through holes. The venting mechanism includes a vent pipe and a high-pressure gas source. The reflux condenser, liquid addition pipe, and vent pipe are respectively installed in the three through holes. The vent pipe extends into the distillation flask and is connected to the high-pressure gas source via a connecting hose. Both the outlet branch pipe and the liquid addition pipe are equipped with control valves. The heating mechanism includes a heater and a controller. The heater is installed on the outlet branch pipe and is electrically connected to the controller. This extraction device for crude oil pretreatment of this utility model is installed in a fume hood. The mixed solution sample is added to the distillation flask through the liquid addition pipe. The heater heats the outlet branch pipe and the mixed solution until the solution boils. Simultaneously, high-pressure gas is introduced into the distillation flask through the vent pipe. The high-pressure gas stirs the solution, causing the heated solution to mix rapidly and evenly with the solution in the flask, thereby achieving an anti-boiling effect and eliminating safety hazards.
[0015] In one feasible solution, the heater is a heating wire;
[0016] The side wall of the liquid outlet branch pipe is provided with a support pad, and the heating wire is wound around the side wall of the liquid outlet branch pipe and rests on the support pad.
[0017] In one feasible solution, the sidewall of the liquid outlet branch pipe is provided with insulating cotton to cover the heating wire.
[0018] In one feasible embodiment, the distillation flask is equipped with a convection tube;
[0019] The convection pipe has a through structure and is installed inside the liquid outlet branch pipe, with its top end corresponding to the top end of the liquid outlet branch pipe.
[0020] In one feasible embodiment, the port of the vent tube located inside the distillation flask extends to the top of the convection tube.
[0021] In one feasible solution, the vent tube is a glass tube.
[0022] In one feasible solution, the connecting hose is equipped with a flow valve for controlling the gas flow rate.
[0023] In one feasible approach, the gas from the high-pressure gas source is nitrogen. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of an extraction device for crude oil pretreatment in an embodiment of the present invention;
[0026] Figure 2 This is a schematic diagram of the liquid outlet branch pipe in an embodiment of this utility model.
[0027] Numbering on the map:
[0028] 1. Distillation flask; 11. Liquid outlet branch pipe; 12. Liquid outlet control valve; 13. Support gasket; 14. Insulating cotton; 15. Convection pipe; 2. Reflux condenser pipe; 3. Liquid inlet pipe; 31. Liquid inlet control valve; 41. Vent pipe; 42. Connecting hose; 43. Flow valve; 51. Heater. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.
[0033] As described in the background section of this application, when detecting the salt content of crude oil, a certain amount of crude oil sample is weighed and dissolved in an organic solvent. The mixed solution is then added to the flask of the extraction device, and the flask is heated to boiling by a heater. After boiling for a certain period of time, the solution is cooled to separate the layers. The lower layer solution is then extracted to determine the salt content in the crude oil.
[0034] The inventors of this application have discovered that when a mixed solution is heated in a distillation flask, if the heating voltage is too low, the speed is slow and the solution is not easy to boil; if the heating voltage is too high, the solution will be heated unevenly, and it is very easy to cause explosive boiling when it reaches the boiling point, which will cause the solution to overflow the flask and pose a safety hazard.
[0035] To address the aforementioned problems, the inventors of this application have proposed a technical solution, the specific embodiments of which are as follows:
[0036] Figure 1 This is a schematic diagram of an extraction device for crude oil pretreatment in an embodiment of this utility model. Figure 2 This is a schematic diagram of the liquid outlet branch pipe in an embodiment of this utility model.
[0037] like Figure 1 and Figure 2 As shown, the extraction device for crude oil pretreatment in this embodiment includes: a distillation flask 1, a reflux condenser 2, a liquid addition pipe 3, a venting mechanism, and a heating mechanism.
[0038] The bottom of the distillation flask 1 is provided with a liquid outlet branch pipe 11, which extends outward, and a liquid outlet control valve 12 is provided at the bottom end of the liquid outlet branch pipe 11.
[0039] The top of the distillation flask 1 has three through holes.
[0040] The reflux condenser 2 and the liquid addition tube 3 are respectively installed in the through hole of the distillation flask 1 through corks, forming a sealed connection with the body of the distillation flask 1. The bottom end of the liquid addition tube 3 is equipped with a liquid addition control valve 31.
[0041] The ventilation mechanism includes: ventilation pipe 41 and high-pressure air source.
[0042] A vent tube 41 is inserted through a cork into the through-hole of the distillation flask 1, forming a sealed connection with the body of the distillation flask 1. The inner end of the vent tube 41 extends into the interior of the distillation flask 1, and the inner port of the vent tube 41 is inserted into the solution inside the distillation flask 1. The outer end of the vent tube 41 is connected to a high-pressure gas source (not shown in the figure) through a connecting hose 42.
[0043] The heating mechanism includes a heater 51 and a controller.
[0044] The heater 51 is installed on the liquid outlet branch pipe 11 and is electrically connected to the controller (not shown in the figure).
[0045] The extraction device in this embodiment is installed inside a fume hood, and all components are fixed as required. The mixed solution sample is added to the distillation flask through the addition tube. The controller and high-pressure gas source are turned on, and the heater heats the outlet branch and the mixed solution until the solution boils. At the same time, high-pressure gas is introduced into the distillation flask, which stirs the solution in the flask, allowing the heated solution to exchange heat with the solution in the flask. The hot and cold solutions are quickly and evenly mixed, thereby achieving the effect of preventing explosive boiling.
[0046] After the solution has boiled for a specified time, turn off the heater and high-pressure gas source to allow the solution to cool and separate into layers. Then, extract the required sample solution through the liquid outlet control valve.
[0047] As can be seen from the above, the extraction device for crude oil pretreatment in this embodiment includes a distillation flask, a reflux condenser, a liquid addition pipe, a heating mechanism, and a venting mechanism. The distillation flask has an outlet branch pipe and three through holes. The venting mechanism includes a vent pipe and a high-pressure gas source. The reflux condenser, liquid addition pipe, and vent pipe are respectively installed in the three through holes. The vent pipe extends into the distillation flask and is connected to the high-pressure gas source via a connecting hose. Both the outlet branch pipe and the liquid addition pipe are equipped with control valves. The heating mechanism includes a heater and a controller. The heater is installed on the outlet branch pipe and is electrically connected to the controller. This extraction device for crude oil pretreatment is installed in a fume hood. The mixed solution sample is added to the distillation flask through the liquid addition pipe. The heater heats the outlet branch pipe and the mixed solution until the solution boils. Simultaneously, high-pressure gas is introduced into the distillation flask through the vent pipe. The high-pressure gas stirs the solution, causing the heated solution to mix rapidly and evenly with the solution in the flask, thereby achieving an anti-boiling effect and eliminating safety hazards.
[0048] Optionally, in this embodiment, the heater 51 of the extraction device for crude oil pretreatment is a heating wire.
[0049] The distillation flask 1 has multiple support pads 13 on the left and right side walls of the liquid outlet branch pipe 11, and the multiple support pads 13 are arranged at intervals. The heating wire 51 is spirally and evenly wound on the side wall of the liquid outlet branch pipe 11 and rests on the support pads 13. The two ends of the heating wire 51 are electrically connected to the controller through connecting wires.
[0050] The support pad 13 provides support for the heating wire 51, keeping the heating wire 51 stable on the liquid outlet branch pipe 11.
[0051] Furthermore, in this embodiment, the extraction device for crude oil pretreatment has an insulating cotton 14 on the outside of the outlet branch pipe 11. The insulating cotton 14 covers the circumferential side wall of the outlet branch pipe 11 and wraps the heating wire 51, making the heating wire 51 safer when it is energized for heating.
[0052] The two ends of the heating wire 51 extend out of the insulating cotton and are electrically connected to the controller.
[0053] Furthermore, in this embodiment, the extraction device for crude oil pretreatment has a convection tube 15 inside the distillation flask 11.
[0054] The convection pipe 15 has a through structure and is fitted inside the liquid outlet branch pipe 11. The bottom end of the convection pipe 15 is set on the liquid outlet branch pipe 11, and the top end of the convection pipe 15 is basically flush with the top end of the liquid outlet branch pipe 11.
[0055] Furthermore, in this embodiment, the extraction device for crude oil pretreatment has a vent pipe 41 inserted into the through hole of the distillation flask 1, and the inner port of the vent pipe 41 inside the distillation flask 1 extends to the top of the convection pipe 15 (liquid outlet branch pipe).
[0056] In this embodiment, when the heating wire heats the outlet branch pipe and the solution, the heated solution rises into the body of the distillation flask. The solution inside the distillation flask flows downward through the convection tube, forming a convection circulation effect, which accelerates the stirring of the solution inside the flask. At the same time, the vent pipe extends to the top of the convection tube (outlet branch pipe), which allows the heated solution to mix quickly with the solution inside the flask, increasing the anti-boiling effect and making it safer to use.
[0057] Optionally, in this embodiment, the extraction device for crude oil pretreatment uses a glass tube for the vent pipe 41 and the convection pipe 15, so that the vent pipe 41 and the convection pipe 15 have high temperature resistance and corrosion resistance, and will not contaminate the solution.
[0058] Optionally, in this embodiment, the extraction device for crude oil pretreatment has a glass tube 41 connected to a high-pressure gas source via a connecting hose 42, and a flow valve 43 is provided on the connecting hose 42 to regulate and control the flow rate of the introduced gas.
[0059] Optionally, in this embodiment, the gas in the high-pressure gas source of the extraction device for crude oil pretreatment is nitrogen, that is, the gas introduced into the distillation flask 1 by the gas inlet pipe 41 is nitrogen. Nitrogen is an inert gas, which ensures that it will not react with the solution.
[0060] In this utility model, unless otherwise explicitly specified and limited, the first feature being "on" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium.
[0061] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "under," and "beneath" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0062] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An extraction apparatus for crude oil pretreatment, characterized in that, include: Distillation flask, reflux condenser, liquid addition tube, heating mechanism, and venting mechanism; The distillation flask is provided with a liquid outlet branch at the bottom and three through holes at the top; The reflux condenser, the liquid addition tube, and the venting mechanism are respectively installed in the three through holes and are sealed to the distillation flask. Both the liquid outlet branch pipe and the liquid inlet pipe are equipped with control valves; The ventilation mechanism includes: a ventilation pipe and a high-pressure air source; The vent pipe passes through the through hole, extends into the distillation flask, and is connected to the high-pressure gas source via a connecting hose. The vent pipe is used to stir the solution in the distillation flask when venting. The heating mechanism includes: a heater and a controller; The heater is mounted on the liquid outlet branch pipe and is electrically connected to the controller.
2. The extraction apparatus for crude oil pretreatment according to claim 1, characterized in that, The heater is a heating wire; The side wall of the liquid outlet branch pipe is provided with a support pad, and the heating wire is wound around the side wall of the liquid outlet branch pipe and rests on the support pad.
3. The extraction apparatus for crude oil pretreatment according to claim 2, characterized in that, The side wall of the liquid outlet branch pipe is provided with insulating cotton for covering the heating wire.
4. The extraction apparatus for crude oil pretreatment according to claim 2, characterized in that, The distillation flask is equipped with a convection tube; The convection pipe has a through structure and is installed inside the liquid outlet branch pipe, with its top end corresponding to the top end of the liquid outlet branch pipe.
5. The extraction apparatus for crude oil pretreatment according to claim 4, characterized in that, The vent tube extends from the port inside the distillation flask to the top of the convection tube.
6. The extraction apparatus for crude oil pretreatment according to claim 1, characterized in that, The vent tube is a glass tube.
7. The extraction apparatus for crude oil pretreatment according to claim 1, characterized in that, The connecting hose is equipped with a flow valve to control the gas flow rate.
8. The extraction apparatus for crude oil pretreatment according to claim 1, characterized in that, The gas in the high-pressure gas source is nitrogen.