Novel oil leaching evaporation system
By designing a new oil leaching and evaporation system, the evaporated solvent is directly recovered to the leaching stage, solving the problem of heat waste during the condensation process and achieving efficient solvent recovery and energy saving.
Patent Information
- Application Number
- CN202421611951.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-09
AI Technical Summary
In the leaching process of the oil processing plant, the heat of the solvent is taken away during the condensation process, resulting in waste of heat and energy, and the cost of equipment investment is relatively high.
A new type of oil leaching evaporation system is designed, including a leaching device, a first evaporation system and a second evaporation system. The evaporated solvent is directly returned to the leaching stage, avoiding the need for heating.
It realizes efficient recycling and reuse of solvents, saves workshop energy consumption, simplifies evaporation and condensation processes, and reduces equipment costs.
Smart Images
Figure CN222821499U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of oil processing, and in particular to a novel oil leaching and evaporation system. Background Art
[0002] The extraction method of vegetable oil processing plants is to use solvents that can dissolve oil to extract the oil from the billet through the effects of wetting penetration, molecular diffusion and convection diffusion. Then, the mixed oil composed of solvent and fat is separated, and the solvent is recovered to obtain crude oil.
[0003] The process flow of the leaching workshop mainly includes raw material pretreatment, leaching, desolventizing, evaporation, stripping, condensation and other steps. Evaporation and condensation are to separate oil and solvent and recover the solvent, and then return it to the leaching section. During the condensation process, the solvent vaporized by heating will be condensed, and the heat of the solvent will be taken away. When it returns to the leaching section, it needs to be reheated, which causes a waste of heat and energy.
[0004] At the same time, supporting facilities such as condensers, vacuum pumps, cooling water circulation systems, cooking tanks, water distribution tanks, etc. are required, and the equipment investment cost is relatively high. Utility Model Content
[0005] The present disclosure provides a novel oil extraction and evaporation system to solve one of the technical problems recognized by the inventor.
[0006] The present disclosure provides a novel oil extraction and evaporation system, comprising an extractor, a first evaporation system and a second evaporation system, wherein the output end of the extractor is connected to the input end of the first evaporation system through a pipeline, the output end of the first evaporation system is connected to the extractor through a pipeline, the output end of the first evaporation system is connected to the input end of the second evaporation system through a pipeline, and the output end of the second evaporation system is connected to the input end of the extractor.
[0007] Preferably, the first evaporation system includes a first mixed oil evaporator, a first vacuum pump and a first temporary storage tank, the side of the first mixed oil evaporator is connected to the extractor through a pipeline, the top of the first mixed oil evaporator is connected to the first vacuum pump through a pipeline, the bottom of the first vacuum pump is connected to the first temporary storage tank through a pipeline, the bottom of the first temporary storage tank is connected to the extractor through a pipeline, the extractor is connected to a first circulation pump, and the first circulation pump is connected to the first vacuum pump through a pipeline.
[0008] Preferably, the top of the first temporary storage tank is connected to a first vacuum condenser through a pipeline, the first vacuum condenser is respectively connected to a second vacuum pump and a third vacuum pump through pipelines, the bottom end of the second vacuum pump is connected to a first sealed tank through a pipeline, and the bottom of the first vacuum condenser is connected to the first sealed tank through a pipeline.
[0009] Preferably, the pipeline connecting the bottom of the second vacuum pump with the first sealed tank extends to the bottom of the first sealed tank, and the upper part of the first sealed tank is connected with the first condenser output pipeline.
[0010] Preferably, a first liquid level detection device is provided in the first temporary storage tank.
[0011] Preferably, the second evaporation system includes a second mixed oil evaporator, a fourth vacuum pump and a second temporary storage tank, the side of the second mixed oil evaporator is connected to the bottom of the first mixed oil evaporator through a pipeline, the top of the second mixed oil evaporator is connected to the fourth vacuum pump through a pipeline, the bottom of the fourth vacuum pump is connected to the second temporary storage tank through a pipeline, the bottom of the second temporary storage tank is connected to the extractor through a pipeline, the extractor is connected to a second circulating pump, and the second circulating pump is connected to the fourth vacuum pump through a pipeline.
[0012] Preferably, the top of the second temporary storage tank is connected to a second vacuum condenser through a pipeline, the second vacuum condenser is respectively connected to a fifth vacuum pump and a sixth vacuum pump through pipelines, the bottom of the fifth vacuum pump is connected to a second sealed tank through a pipeline, and the bottom of the second vacuum condenser is connected to the second sealed tank through a pipeline.
[0013] Preferably, the pipeline connecting the bottom of the fifth vacuum pump and the second sealed tank extends to the bottom of the second sealed tank, and the upper part of the second sealed tank is connected with the second condenser output pipeline.
[0014] Preferably, a second liquid level detection device is provided in the second temporary storage tank.
[0015] The beneficial effects of the present disclosure are mainly that: the utility model returns the evaporated solvent directly to the leaching section through the first evaporation system and the second evaporation system, and the recovered solvent does not need to be heated to meet the requirements of the leaching section, saving energy consumption in the workshop. Compared with the traditional process, the evaporation and condensation process is simplified and the equipment cost is reduced.
[0016] It should be understood that both the foregoing general description and the following specific embodiments are for the purpose of example and illustration and do not necessarily limit the present disclosure. The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate the subject matter of the present disclosure. At the same time, the specification and the drawings are used to explain the principles of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the specific embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 It is a structural block diagram of the oil extraction and evaporation system of the embodiment of the present disclosure;
[0019] Icons: 1-first circulation pump; 2-second circulation pump; 3-extractor; 4-first mixed oil evaporator; 5-first vacuum pump; 6-first temporary storage tank; 7-first vacuum condenser; 8-second vacuum pump; 9-third vacuum pump; 10-first sealed tank; 11-second mixed oil evaporator; 12-fourth vacuum pump; 13-second temporary storage tank; 14-second vacuum condenser; 15-fifth vacuum pump; 16-sixth vacuum pump; 17-second sealed tank. DETAILED DESCRIPTION
[0020] The technical solution of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments.
[0021] Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present disclosure.
[0022] In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0023] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.
[0024] Example
[0025] like Figure 1 As shown, this embodiment provides a novel oil extraction and evaporation system, including an extractor 3, a first evaporation system and a second evaporation system, the output end of the extractor 3 is connected to the input end of the first evaporation system through a pipeline, the output end of the first evaporation system is connected to the extractor 3 through a pipeline, the output end of the first evaporation system is connected to the input end of the second evaporation system through a pipeline, and the output end of the second evaporation system is connected to the input end of the extractor 3.
[0026] In this embodiment, the mixed oil (oil and solvent mixture) in the extractor 3 is transported to the first evaporation system through a delivery pump and a pipeline (not shown in the figure). After separation in the first evaporation system, the solvent directly returns to the extractor 3 for work. The remaining mixed oil in the first evaporation system is transported to the second evaporation system through a delivery pump and a pipeline (not shown in the figure), and continues to evaporate through the second evaporation system to further separate the oil and solvent in the mixed oil. The separated solvent directly returns to the extractor 3 for work. After two evaporation operations, the separation degree of the solvent is improved. After the solvent in the mixed oil is fully separated, it returns to the extractor 3 for work.
[0027] Specifically, the first evaporation system includes a first mixed oil evaporator 4, a first vacuum pump 5 and a first temporary storage tank 6. The upper side of the first mixed oil evaporator 4 is connected to the extractor 3 through a pipeline, and a delivery pump is provided between the first mixed oil evaporator 4 and the extractor 3 to deliver the mixed oil to the first mixed oil evaporator 4, and the first mixed oil evaporator 4 is evaporated to separate the solvent and the oil. The top of the first mixed oil evaporator 4 is connected to the first vacuum pump 5 through a pipeline, and the output end of the first vacuum pump 5 is connected to the first temporary storage tank 6 through a pipeline. The bottom end of the first temporary storage tank 6 is connected to the extractor 3 through a pipeline. The extractor 3 is connected to the first circulation pump 1, and the first circulation pump 1 is connected to the first vacuum pump 5 through a pipeline. The first vacuum pump 5 is connected to the first circulation pump 1, and the power is provided by the first circulation pump 1, without increasing additional energy consumption. The solvent evaporated in the first mixed oil evaporator 4 is extracted into the first temporary storage tank 6 through the first vacuum pump 5, and then transported to the extractor 3 through the pipeline at the bottom of the first temporary storage tank 6.
[0028] Among them, the top of the first temporary storage tank 6 is connected to the first vacuum condenser 7 through a pipeline, the first vacuum condenser 7 is respectively connected to the second vacuum pump 8 and the third vacuum pump 9 through pipelines, the bottom of the second vacuum pump 8 is connected to the first sealed tank 10 through a pipeline, and the bottom of the first vacuum condenser 7 is connected to the first sealed tank 10 through a pipeline. In this embodiment, the first vacuum condenser 7 is a wide-channel gas plate condenser in the prior art, which has the advantages of high heat exchange efficiency, compact structure, and long equipment life. The first vacuum condenser 7 is connected to the gas from the upper interface and the outlet is connected from the bottom, which is divided into two paths, one of which is the condensate connected to the first sealed tank 10 downward, and the other is connected to the second vacuum pump 8. The condensate directly enters the first sealed tank 10, and part of the liquid extracted by the second vacuum pump 8 enters the first sealed tank 10 through the pipeline. The negative pressure environment of the first evaporation system and the extractor 3 is ensured by the second vacuum pump 8 and the third vacuum pump 9.
[0029] Furthermore, the pipe connecting the bottom of the second vacuum pump 8 with the first sealed tank 10 extends to the bottom of the first sealed tank 10, and the first condenser output pipe is connected through the upper part of the first sealed tank 10. The pipe connecting the bottom of the second vacuum pump 8 with the first sealed tank 10 extends to the bottom of the first sealed tank 10 to form a liquid seal to ensure the vacuum degree of the system. After the liquid collected by the first sealed tank 10 reaches a certain liquid level, it will flow out from the first condenser output pipe.
[0030] Furthermore, a first liquid level detection device is provided in the first temporary storage tank 6. The first liquid level detection device is a liquid level meter in the prior art, and a valve is provided on the pipeline between the first temporary storage tank 6 and the extractor 3. The liquid level height in the first temporary storage tank 6 is detected by the liquid level meter, and the opening and closing degree of the valve is controlled according to the liquid level height, thereby adjusting the liquid level height in the first temporary storage tank 6 to avoid excessive solvent in the first temporary storage tank 6.
[0031] Similarly, the second evaporation system includes a second mixed oil evaporator 11, a fourth vacuum pump 12 and a second temporary storage tank 13. The side of the second mixed oil evaporator 11 is connected to the bottom of the first mixed oil evaporator 4 through a pipeline. After the first mixed oil evaporator 4 is evaporated, the remaining mixed oil is transported to the second mixed oil evaporator 11 through a delivery pump (not shown in the figure). The top of the second mixed oil evaporator 11 is connected to the fourth vacuum pump 12 through a pipeline, and the bottom of the fourth vacuum pump 12 is connected to the second temporary storage tank 13 through a pipeline. The bottom end of the second temporary storage tank 13 is connected to the extractor 3 through a pipeline. The extractor 3 is connected to the second circulating pump 2, and the second circulating pump 2 is connected to the fourth vacuum pump 12 through a pipeline.
[0032] Furthermore, the top of the second temporary storage tank 13 is connected to the second vacuum condenser 14 through a pipeline, the second vacuum condenser 14 is respectively connected to the fifth vacuum pump 15 and the sixth vacuum pump 16 through pipelines, the bottom of the fifth vacuum pump 15 is connected to the second sealed tank 17 through a pipeline, and the bottom of the second vacuum condenser 14 is connected to the second sealed tank 17 through a pipeline.
[0033] Furthermore, the pipeline connecting the bottom of the fifth vacuum pump 15 and the second sealed tank 17 extends to the bottom of the second sealed tank 17 , and the upper part of the second sealed tank 17 is connected with a second condenser output pipeline.
[0034] Furthermore, a second liquid level detection device is disposed in the second temporary storage tank 13 .
[0035] The structure and working principle of the second evaporation system are the same as those of the first evaporation system, except that the mixed oil input path is different, and the specific working principle will not be described in detail here.
[0036] The working principle of the utility model is as follows: during operation, the mixed oil extracted from the extractor 3 is transported to the first mixed oil evaporator 4 through the delivery pump, and the evaporation temperature is controlled at about 60°C; since a high vacuum is designed here, a lower evaporation temperature can be controlled to reduce the energy consumption of the workshop; the solvent is extracted by the first vacuum pump 5 and enters the first temporary storage tank 6, and because it has not been condensed, the extracted solvent does not need to be heated and can be directly added to the leaching section for material leaching, which can save the energy consumption of heating fresh solvent; there will be some unliquefied solvent or non-condensable gas in the first temporary storage tank 6, which will be extracted by the subsequent second vacuum pump 8 and the third vacuum pump 9 to ensure the negative pressure environment of the evaporation section and the leaching section, and the solvent condensed by the vacuum condenser and the liquid extracted by the second vacuum pump 8 and the third vacuum pump 9 are collected in the first sealed tank 10, and the collected solvent can be added to the extractor 3 for reuse after being reprocessed. Similarly, the mixed oil treated by the first mixed oil evaporator 4 is transported to the second mixed oil evaporator 11 for a second evaporation operation. The evaporation temperature of the second mixed oil evaporator 11 is controlled at about 65° C. The rest of the working process and principle are the same as those of the first evaporation system and will not be repeated here.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.
Claims
1. A novel oil leaching and evaporation system, characterized in that: include: An extractor, a first evaporation system and a second evaporation system, wherein the output end of the extractor is connected to the input end of the first evaporation system through a pipeline, the output end of the first evaporation system is connected to the extractor through a pipeline, the output end of the first evaporation system is connected to the input end of the second evaporation system through a pipeline, and the output end of the second evaporation system is connected to the input end of the extractor.
2. A novel oil leaching and evaporation system according to claim 1, characterized in that: The first evaporation system includes a first mixed oil evaporator, a first vacuum pump and a first temporary storage tank. The side of the first mixed oil evaporator is connected to the extractor through a pipeline, the top of the first mixed oil evaporator is connected to the first vacuum pump through a pipeline, the bottom of the first vacuum pump is connected to the first temporary storage tank through a pipeline, the bottom of the first temporary storage tank is connected to the extractor through a pipeline, the extractor is connected to a first circulation pump, and the first circulation pump is connected to the first vacuum pump through a pipeline.
3. A novel oil leaching and evaporation system according to claim 2, characterized in that: The top of the first temporary storage tank is connected to a first vacuum condenser through a pipeline, the first vacuum condenser is respectively connected to a second vacuum pump and a third vacuum pump through pipelines, the bottom of the second vacuum pump is connected to a first sealed tank through a pipeline, and the bottom of the first vacuum condenser is connected to the first sealed tank through a pipeline.
4. A novel oil leaching and evaporation system according to claim 3, characterized in that: The pipeline connecting the bottom of the second vacuum pump and the first sealed tank extends to the bottom of the first sealed tank, and the upper part of the first sealed tank is connected with the first condenser output pipeline.
5. The novel oil extraction and evaporation system according to claim 3 is characterized in that: A first liquid level detection device is arranged in the first temporary storage tank.
6. A novel oil extraction and evaporation system according to any one of claims 2 to 5, characterized in that: The second evaporation system includes a second mixed oil evaporator, a fourth vacuum pump and a second temporary storage tank. The side of the second mixed oil evaporator is connected to the bottom of the first mixed oil evaporator through a pipeline, the top of the second mixed oil evaporator is connected to the fourth vacuum pump through a pipeline, the bottom of the fourth vacuum pump is connected to the second temporary storage tank through a pipeline, the bottom of the second temporary storage tank is connected to the extractor through a pipeline, the extractor is connected to a second circulating pump, and the second circulating pump is connected to the fourth vacuum pump through a pipeline.
7. The novel oil extraction and evaporation system according to claim 6 is characterized in that: The top of the second temporary storage tank is connected to the second vacuum condenser through a pipeline, the second vacuum condenser is respectively connected to the fifth vacuum pump and the sixth vacuum pump through pipelines, the bottom of the fifth vacuum pump is connected to the second sealed tank through a pipeline, and the bottom of the second vacuum condenser is connected to the second sealed tank through a pipeline.
8. The novel oil extraction and evaporation system according to claim 7 is characterized in that: The pipeline connecting the bottom of the fifth vacuum pump and the second sealed tank extends to the bottom of the second sealed tank, and the upper part of the second sealed tank is connected with the second condenser output pipeline.
9. The novel oil extraction and evaporation system according to claim 6 is characterized in that: A second liquid level detection device is arranged in the second temporary storage tank.