Preparation device of biodiesel and heavy oil based on multi-stage fractionation

Abstract

The utility model relates to a biodiesel and heavy oil preparation device based on multi-stage fractionation, belonging to the field of biodiesel and heavy oil preparation devices. The device comprises: a fractionation tower, having a crude oil pipe, a discharge pipe and a heating chamber; a heater, installed at the bottom of the fractionation tower; a stirring assembly, used to stir the crude oil and catalyst in the heating chamber; a first partition plate, fixedly connected to the inner wall of the fractionation tower, and having a first material guide pipe and a heavy oil pipe, the heavy oil pipe is fixed to the side wall of the fractionation tower; a second partition plate, fixedly connected to the inner wall of the fractionation tower, and having a second material guide pipe and a biodiesel pipe, the biodiesel pipe is fixed to the side wall of the fractionation tower; wherein the heating chamber is located at the bottom of the first partition plate, and a heavy oil chamber is formed between the first partition plate and the second partition plate. The device reduces energy consumption and improves heating efficiency, and in the process of heating the crude oil, the crude oil and catalyst in the heating chamber are stirred by the stirring assembly, further improving the heating efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of biodiesel and heavy oil preparation devices, in particular to a biodiesel and heavy oil preparation device based on multi-stage fractionation. Background Art

[0002] Biodiesel refers to a renewable diesel fuel that can replace petrochemical diesel, which is made from oil crops such as soybeans, rapeseed, cotton, palm, wild oil plants and aquatic plant oils such as engineered microalgae, animal fats, and restaurant waste oil through ester exchange or thermochemical processes. It is made from discarded animal and plant oils, waste engine oil, and by-products of refineries, and then added with catalysts, and synthesized through special equipment and special processes. Traditional preparation devices usually use a treatment method of heating the raw oil pipeline and then fractionating the raw oil vapor to prepare biodiesel and heavy oil. This method requires heating the raw oil pipeline first, which is a waste of resources and has low heating efficiency. Therefore, it needs to be improved. Utility Model Content

[0003] Based on this, it is necessary to provide a biodiesel and heavy oil preparation device based on multi-stage distillation in order to address the problem that traditional preparation devices usually adopt a treatment method of heating the raw oil pipeline and then distilling the raw oil vapor. This method requires heating the raw oil pipeline first, which is a waste of resources and has low heating efficiency.

[0004] The utility model provides a preparation device of biodiesel and heavy oil based on multi-stage fractionation, comprising:

[0005] A fractionating tower having a crude oil pipe, a discharge pipe and a heating chamber;

[0006] A heater installed at the bottom of the fractionation tower;

[0007] A stirring assembly, installed on the fractionation tower, for stirring the crude oil and the catalyst in the heating chamber;

[0008] A first partition plate is fixedly connected to the inner wall of the fractionation tower and has a first material guide pipe and a heavy oil pipe, wherein the heavy oil pipe is fixed to the side wall of the fractionation tower;

[0009] A second partition plate is fixedly connected to the inner wall of the fractionation tower and has a second material guide pipe and a biodiesel pipe, and the biodiesel pipe is fixed to the side wall of the fractionation tower;

[0010] Wherein, the heating chamber is located at the bottom of the first partition plate, and a heavy oil chamber is formed between the first partition plate and the second partition plate.

[0011] In one embodiment, the stirring assembly includes a motor, a turntable, and a heat-conducting pipe. The motor is installed on the side wall of the distillation tower, the turntable is fixedly connected to the output end of the motor, and the heat-conducting pipe is a spiral tube.

[0012] In one embodiment, the first partition plate is inclined toward the heavy oil pipe, and the second partition plate is inclined toward the biodiesel pipe.

[0013] In one embodiment, the upper outer walls of the first material guiding tube and the second material guiding tube are both fixedly connected with an extension portion, and the angle between the extension portion and the corresponding first material guiding tube or the second material guiding tube is an acute angle.

[0014] In one embodiment, the crude oil pipe has a first bending portion, a second bending portion and an inner concave portion, and the inner concave portion is located between the first bending portion and the second bending portion.

[0015] In one embodiment, a steam tank is installed at the outlet end of the biodiesel pipe, a vertical pipe is fixedly connected to the biodiesel pipe, a stop valve is installed between the vertical pipe and the steam tank, and a fractionating head is installed at the joint between the vertical pipe and the discharge pipe.

[0016] In one embodiment, the inner wall of the fractionating head is threadedly connected to a threaded rod, the bottom of the threaded rod is fixedly connected to a brush, and the upper end of the threaded rod is fixedly connected to a knob.

[0017] In one of the embodiments, a groove is provided on the inner wall of the fractionating head, a baffle is clamped in the groove, a limiting block is fixedly connected to the surface of the baffle, and the bottom of the baffle is inclined toward the outlet end of the fractionating head.

[0018] When in use, the above-mentioned biodiesel and heavy oil preparation device based on multi-stage distillation transports the raw oil from the crude oil pipe into the heating chamber, and then controls the heater to directly heat the raw oil. Raw materials with different boiling points are separated through physical distillation, so that the heavy oil is discharged from the heavy oil pipe, and biodiesel is discharged from the biodiesel pipe and the discharge pipe. The biodiesel obtained by the two-stage distillation method is more refined. At the same time, compared with the traditional method of heating the raw oil pipe, energy consumption is reduced and heating efficiency is improved. In the process of heating the raw oil, the crude oil and catalyst in the heating chamber are stirred by the stirring component, which further improves the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 The figure is a schematic diagram of the structure of a device for preparing biodiesel and heavy oil based on multi-stage fractionation in one embodiment;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0022] Figure 3 is a schematic diagram of the structure of a stirring assembly in one embodiment;

[0023] Figure 4 It is a partial structural schematic diagram of a device for preparing biodiesel and heavy oil based on multi-stage fractionation in one embodiment.

[0024] Reference numerals:

[0025] 100, distillation tower; 110, crude oil pipe; 111, first bend; 112, second bend; 113, inner concave; 120, discharge pipe; 130, heating chamber; 140, heavy oil chamber; 200, stirring assembly; 210, motor; 220, turntable; 230, heat pipe; 300, first partition plate; 310, first material guide pipe; 320, heavy oil pipe; 400, second partition plate; 410, second material guide pipe; 420, biodiesel pipe; 430, extension; 500, water vapor tank; 510, vertical pipe; 520, distillation head; 530, stop valve; 540, threaded rod; 550, knob; 560, brush; 570, groove; 580, baffle; 590, limit block; 600, heater. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the utility model are for illustrative purposes only and do not represent the only implementation method.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Unless otherwise defined, all technical and scientific terms used in the specification of the present utility model have the same meaning as those commonly understood by technicians in the technical field of the present utility model. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used in the specification of the present utility model includes any and all combinations of one or more related listed items.

[0031] Combine the following Figure 1-Figure 4 The utility model describes a preparation device of biodiesel and heavy oil based on multi-stage fractionation.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment, a device for preparing biodiesel and heavy oil based on multi-stage fractionation includes a fractionation tower 100 , a heater 600 , a stirring assembly 200 , a first partition plate 300 , and a second partition plate 400 .

[0033] The fractionation tower 100 comprises a crude oil pipe 110 , a discharge pipe 120 and a heating chamber 130 . The crude oil pipe 110 is located on the side wall of the fractionation tower 100 , and the discharge pipe 120 is located on the top of the fractionation tower 100 .

[0034] The heater 600 is installed at the bottom of the fractionation tower 100 .

[0035] The stirring assembly 200 is installed on the fractionation tower 100 , and the stirring assembly 200 is used to stir the crude oil and the catalyst in the heating chamber 130 .

[0036] The first partition plate 300 is fixedly connected to the inner wall of the fractionation tower 100 , and the first partition plate 300 has a first material guide pipe 310 and a heavy oil pipe 320 , and the heavy oil pipe 320 is fixed to the side wall of the fractionation tower 100 .

[0037] The second partition plate 400 is fixedly connected to the inner wall of the fractionation tower 100 , and the second partition plate 400 has a second material guide pipe 410 and a biodiesel pipe 420 . The biodiesel pipe 420 is fixed to the side wall of the fractionation tower 100 .

[0038] Among them, the heating chamber 130 is located at the bottom of the first partition plate 300, and the heavy oil chamber 140 is formed between the first partition plate 300 and the second partition plate 400. The second material guide pipe 410 and the first material guide pipe 310 are staggered, which can improve the separation effect of various components in the crude oil.

[0039] In this embodiment, the stirring assembly 200 includes a motor 210, a turntable 220, and a heat pipe 230. The motor 210 is installed on the side wall of the distillation tower 100, the turntable 220 is fixedly connected to the output end of the motor 210, and the heat pipe 230 is a spiral tube.

[0040] When the above-mentioned biodiesel and heavy oil preparation device based on multi-stage distillation is in use, the raw oil is transported from the crude oil pipe 110 to the heating chamber 130, and then the heater 600 is controlled to directly heat the raw oil. Raw materials with different boiling points are separated by physical distillation, so that the heavy oil is discharged from the heavy oil pipe 320, and the biodiesel is discharged from the biodiesel pipe 420 and the discharge pipe 120. The biodiesel obtained by the two-stage distillation method is more refined. At the same time, compared with the traditional method of heating the raw oil pipe, energy consumption is reduced and heating efficiency is improved. In the process of heating the raw oil, the turntable 220 is driven to rotate by starting the motor 210, and the turntable 220 drives the heat pipe 230 to rotate, so as to facilitate the stirring of the crude oil and the catalyst in the heating chamber 130, and further improve the heating efficiency.

[0041] In this embodiment, the first partition plate 300 is inclined toward the heavy oil pipe 320, and the second partition plate 400 is inclined toward the biodiesel pipe 420, so that the first partition plate 300 and the second partition plate 400 can separate the chambers and guide the flow at the same time.

[0042] In this embodiment, the upper outer walls of the first material guiding tube 310 and the second material guiding tube 410 are fixedly connected with an extension portion 430 , and the included angle between the extension portion 430 and the corresponding first material guiding tube 310 or second material guiding tube 410 is an acute angle.

[0043] In one embodiment, the crude oil pipe 110 has a first bend 111, a second bend 112 and an inner recess 113. The inner recess 113 is located between the first bend 111 and the second bend 112, which can effectively prevent the crude oil vapor from flowing back from the crude oil pipe 110 during the distillation process.

[0044] like Figure 4 As shown, in one embodiment, a steam tank 500 is installed at the outlet end of the biodiesel pipe 420, a vertical pipe 510 is fixedly connected to the biodiesel pipe 420, a stop valve 530 is installed between the vertical pipe 510 and the steam tank 500, and a fractionating head 520 is installed at the joint between the vertical pipe 510 and the discharge pipe 120.

[0045] In the chamber formed between the second partition plate 400 and the distillation tower 100, part of the water vapor contacts the inner wall of the top of the distillation tower 100 to form water droplets that drip onto the surface of the second partition plate 400 and finally flow into the biodiesel pipe 420. In order to improve the purity of biodiesel, the condensed water droplets are collected in the water vapor tank 500, and the biodiesel vapor is respectively collected from the vertical pipe 510 and the discharge pipe 120 at the distillation head 520 for centralized discharge.

[0046] In this embodiment, the inner wall of the fractionating head 520 is threadedly connected to a threaded rod 540, the bottom of the threaded rod 540 is fixedly connected to a brush 560, and the upper end of the threaded rod 540 is fixedly connected to a knob 550. After long-term use, part of the biodiesel vapor is easily retained in the fractionating head 520, thereby affecting the flow rate at the fractionating head 520. Therefore, the knob 550 is rotated regularly to rotate the threaded rod 540, thereby facilitating regular cleaning of the fractionating head 520, thereby increasing the service life of the fractionating head 520 and effectively preventing blockage in the fractionating head 520.

[0047] In this embodiment, a groove 570 is provided on the inner wall of the fractionation head 520, and a baffle 580 is clamped in the groove 570. The surface of the baffle 580 is fixedly connected to a limiting block 590, and the bottom of the baffle 580 is inclined toward the outlet end of the fractionation head 520. On the one hand, it can isolate the brush 560 to prevent the biodiesel vapor from sticking to the brush 560 during the circulation process, and on the other hand, it can play a role in diversion.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

Claims

1. A device for preparing biodiesel and heavy oil based on multi-stage fractionation, characterized in that: include: A fractionating tower having a crude oil pipe, a discharge pipe and a heating chamber; A heater installed at the bottom of the fractionation tower; A stirring assembly, installed on the fractionation tower, for stirring the crude oil and the catalyst in the heating chamber; A first partition plate is fixedly connected to the inner wall of the fractionation tower and has a first material guide pipe and a heavy oil pipe, wherein the heavy oil pipe is fixed to the side wall of the fractionation tower; A second partition plate is fixedly connected to the inner wall of the fractionation tower and has a second material guide pipe and a biodiesel pipe, and the biodiesel pipe is fixed to the side wall of the fractionation tower; Wherein, the heating chamber is located at the bottom of the first partition plate, and a heavy oil chamber is formed between the first partition plate and the second partition plate.

2. The device for preparing biodiesel and heavy oil based on multi-stage fractionation according to claim 1, characterized in that: The stirring assembly comprises a motor, a turntable and a heat-conducting pipe. The motor is installed on the side wall of the fractionation tower. The turntable is fixedly connected to the output end of the motor. The heat-conducting pipe is a spiral pipe.

3. The device for preparing biodiesel and heavy oil based on multi-stage fractionation according to claim 1, characterized in that: The first partition plate is inclined toward the heavy oil pipe, and the second partition plate is inclined toward the biodiesel pipe.

4. The device for preparing biodiesel and heavy oil based on multi-stage fractionation according to claim 3, characterized in that: The upper outer walls of the first material guiding tube and the second material guiding tube are both fixedly connected with an extension portion, and the included angle between the extension portion and the corresponding first material guiding tube or the second material guiding tube is an acute angle.

5. The device for preparing biodiesel and heavy oil based on multi-stage fractionation according to claim 1, characterized in that: The crude oil pipe is provided with a first bending portion, a second bending portion and an inner concave portion, and the inner concave portion is located between the first bending portion and the second bending portion.

6. The device for preparing biodiesel and heavy oil based on multi-stage fractionation according to any one of claims 1 to 5, characterized in that: A steam tank is installed at the outlet end of the biodiesel pipe, a vertical pipe is fixedly connected to the biodiesel pipe, a stop valve is installed between the vertical pipe and the steam tank, and a fractionation head is installed at the joint of the vertical pipe and the discharge pipe.

7. The device for preparing biodiesel and heavy oil based on multi-stage fractionation according to claim 6, characterized in that: The inner wall of the fractionation head is threadedly connected with a threaded rod, the bottom of the threaded rod is fixedly connected with a brush, and the upper end of the threaded rod is fixedly connected with a knob.

8. The device for preparing biodiesel and heavy oil based on multi-stage fractionation according to claim 7, characterized in that: The inner wall of the fractionating head is provided with a groove, a baffle is clamped in the groove, a limiting block is fixedly connected to the surface of the baffle, and the bottom of the baffle is inclined toward the outlet end of the fractionating head.

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