Distillation deodorization system for biodiesel production

Abstract

The utility model discloses a distillation and deodorization system for biodiesel production, which solves the technical problems that in the prior art, the working procedures are various, the use amount of equipment is large, the economic cost is high, and light component oil is separated only by a deodorization tower, so that the separation efficiency and the recovery rate of the light component oil are low. Comprising a heat supply mechanism, and a primary deodorization mechanism and a secondary deodorization mechanism which are respectively connected with the heat supply mechanism. According to the device, the light component oil in the biodiesel semi-finished product is subjected to two-stage separation and recovery, the process is simple, the use amount of equipment is small, the economic cost is reduced, and compared with the prior art that the light component oil is separated only by virtue of a deodorization tower, the separation efficiency of the light component oil and the recovery rate of the light component oil are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of biodiesel production, and particularly relates to a distillation deodorization system for biodiesel production. Background Art

[0002] The main components of semi-finished biodiesel are light oil, biodiesel, and plant pitch. Light oil has a pungent and smelly taste. To improve the quality of biodiesel, it is necessary to remove both the plant pitch and the light oil from the semi-finished biodiesel. Existing technologies for removing light oil from semi-finished biodiesel require complex processes, extensive equipment, and high costs. Furthermore, relying solely on deodorization towers to separate the light oil results in low efficiency and recovery rates. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a distillation deodorization system for biodiesel production, so as to at least solve part of the above technical problems.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0005] A distillation deodorization system for biodiesel production comprises a heating mechanism, and a primary deodorization mechanism and a secondary deodorization mechanism respectively connected to the heating mechanism; the primary deodorization mechanism comprises a feed pipe connected to an external biodiesel semi-finished product source, a first preheater connected to the feed pipe, a degassing tower connected to the first preheater, and a first light component oil recovery mechanism connected to the degassing tower; the secondary deodorization mechanism comprises a second preheater connected to the degassing tower, a deodorization tower connected to the second preheater, and a discharge pipe, a second light component oil recovery mechanism, and a third light component oil recovery mechanism respectively connected to the deodorization tower.

[0006] Furthermore, the first light component oil recovery mechanism includes a first condenser connected from the top of the degassing tower, a first vacuum buffer tank connected from the first condenser, and a first pump connected from the first vacuum buffer tank to an external light component oil tank.

[0007] Furthermore, a first pipe A is connected between the degassing tower and the first condenser, a first pipe B is connected between the first condenser and the first vacuum buffer tank, and a first pipe C is connected between the first vacuum buffer tank and the first pump.

[0008] Furthermore, the second light component oil recovery mechanism includes a reflux tank connected to the deodorization tower, a second condenser connected to the reflux tank, a receiving tank connected to the second condenser, and a second pump connected to the receiving tank and connected to the external light component oil tank.

[0009] Furthermore, an overflow pipe is connected between the deodorizing tower and the reflux tank, a reflux pipe is connected to the reflux tank, the reflux pipe is connected to the deodorizing tower, a third valve is provided on the reflux pipe, a second pipe A is connected between the reflux tank and the second condenser, a second pipe B is connected between the second condenser and the receiving tank, a second pipe C is connected between the receiving tank and the second pump, a second pipe D is connected between the second pump and the external light component oil tank, a second pipe E is connected to the second pipe D, and the second pipe D and the second pipe E are respectively provided with a fourth valve and a fifth valve.

[0010] Furthermore, the third recovery mechanism includes a third pipe A connected from the top of the deodorizing tower, a third condenser connected from the third pipe A, a third pipe B connected from the third condenser, and a second buffer tank connected from the third pipe B.

[0011] Furthermore, the deodorizing tower is connected to a concentrating mechanism, which includes a first concentrating tube connected from the deodorizing tower, a concentrating delivery pump connected from the first concentrating tube, a second concentrating tube connected from the concentrating delivery pump, a falling film evaporator connected from the second concentrating tube, and a third concentrating tube connected from the falling film evaporator and connected to the deodorizing tower. A first valve is provided on the second concentrating tube, and a discharge pipe is connected from the second concentrating tube between the first valve and the concentration delivery pump, and a second valve is provided on the discharge pipe.

[0012] Furthermore, the heating mechanism includes an oil inlet pipe connected to an external heat transfer oil source, a first input branch pipe, a second input branch pipe and a third input branch pipe connected to the first preheater, the second preheater and the falling film evaporator respectively, a first output branch pipe, a second output branch pipe and a third output branch pipe connected to the first preheater, the second preheater and the falling film evaporator respectively, and an oil outlet pipe connected to the first output branch pipe, the second output branch pipe and the third output branch pipe and connected to an external heat transfer oil recovery tank.

[0013] Furthermore, a third pump and a fourth pump are provided in parallel on the feed pipe, a fourth pipe is connected between the first preheater and the degassing tower, a fifth pipe is connected between the degassing tower and the second preheater, and a sixth pipe is connected between the second preheater and the deodorizing tower. A fifth pump and a sixth valve are provided in sequence in the conveying direction of the fifth pipe, a heat exchange input pipe is connected to the fifth pipe between the fifth pump and the sixth valve, and a heat exchange output pipe is connected to the fifth pipe between the second preheater and the sixth valve.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model has a simple structure, a scientific and reasonable design, and is easy to use. The utility model performs two-stage separation and recovery of light component oil in a biodiesel semi-finished product. When performing the first-stage separation and recovery, the first preheater is used to preheat the biodiesel semi-finished product, and then the degassing tower is used to separate the light component oil in the biodiesel semi-finished product, and the first recovery mechanism is used to recover the separated light component oil. On the basis of the first-stage recovery, when performing the second-stage separation and recovery, the second preheater is used to preheat the biodiesel semi-finished product, and then the deodorizing tower is used to further separate the light component oil in the biodiesel semi-finished product, and the second recovery mechanism and the third recovery mechanism are used to recover the separated light component oil. The process is simple, the equipment usage is small, and the economic cost is reduced. Moreover, compared with the prior art in which the light component oil is separated only by the deodorizing tower, the utility model improves the separation efficiency and the recovery rate of the light component oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the utility model.

[0017] The names corresponding to the reference numerals are:

[0018] 1-feed pipe, 2-first preheater, 3-degassing tower, 4-second preheater, 5-deodorizing tower, 6-discharge pipe, 7-concentration tube 1, 8-concentration transfer pump, 9-concentration tube 2, 10-falling film evaporator, 11-concentration tube 3, 12-first valve, 13-second valve, 14-first condenser, 15-first vacuum buffer tank, 16-first pump, 17-first tube A, 18-first tube B, 19-first tube C, 20-reflux tank, 21-second condenser, 22-receiving tank, 23-second pump, 24-overflow pipe, 25-reflux pipe, 26-second tube A, 27-second tube B, 28-second tube C, 29-second tube D, 30-third valve, 31-second tube E, 32-fourth valve, 33-fifth valve, 34-third tube A, 35-third condenser , 36-third pipe B, 37-second buffer tank, 38-oil inlet pipe, 39-first input branch pipe, 40-second input branch pipe, 41-third input branch pipe, 42-first output branch pipe, 43-second output branch pipe, 44-third output branch pipe, 45-oil outlet pipe, 46-third pump, 47-fourth pump, 48-fourth pipe, 49-fifth pipe, 50-fifth pump, 51-sixth valve, 52-heat exchange input pipe, 53-heat exchange output pipe, 54-sixth pipe, 55-seventh valve, 56-steam pipe, 57-eighth valve, 60-cooling water inlet pipe A, 61-cooling water outlet pipe A, 62-cooling water inlet pipe B, 63-cooling water outlet pipe B, 64-cooling water inlet pipe, 65-cooling water outlet pipe C, 66-cooling water inlet pipe D, 67-cooling water outlet pipe D. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described herein are merely a portion of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; of course, they can also refer to mechanical connections or electrical connections; in addition, they can also refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0022] Example 1

[0023] like Figure 1 As shown, the utility model provides a distillation deodorization system for biodiesel production, including a heating mechanism, and a primary deodorization mechanism and a secondary deodorization mechanism respectively connected to the heating mechanism; the primary deodorization mechanism includes a feed pipe 1 connected to an external biodiesel semi-finished product source, a first preheater 2 connected from the feed pipe 1, a degassing tower 3 connected from the first preheater 2, and a first light component oil recovery mechanism connected from the degassing tower 3; the secondary deodorization mechanism includes a second preheater 4 connected from the degassing tower 3, a deodorizing tower 5 connected from the second preheater 4, and a discharge pipe 6, a second light component oil recovery mechanism and a third light component oil recovery mechanism respectively connected from the deodorizing tower 5.

[0024] The utility model has a simple structure, a scientific and reasonable design, and is easy to use. The utility model performs two-stage separation and recovery of light component oil in a biodiesel semi-finished product. When performing the first-stage separation and recovery, the first preheater is used to preheat the biodiesel semi-finished product, and then the degassing tower is used to separate the light component oil in the biodiesel semi-finished product, and the first recovery mechanism is used to recover the separated light component oil. On the basis of the first-stage recovery, when performing the second-stage separation and recovery, the second preheater is used to preheat the biodiesel semi-finished product, and then the deodorizing tower is used to further separate the light component oil in the biodiesel semi-finished product, and the second recovery mechanism and the third recovery mechanism are used to recover the separated light component oil. The process is simple, the equipment usage is small, and the economic cost is reduced. Moreover, compared with the prior art in which the light component oil is separated only by the deodorizing tower, the utility model improves the separation efficiency and the recovery rate of the light component oil.

[0025] Example 2

[0026] like Figure 1 As shown, the utility model provides a distillation deodorization system for biodiesel production, including a heating mechanism, and a primary deodorization mechanism and a secondary deodorization mechanism respectively connected to the heating mechanism; the primary deodorization mechanism includes a feed pipe 1 connected to an external biodiesel semi-finished product source, a first preheater 2 connected from the feed pipe 1, a degassing tower 3 connected from the first preheater 2, and a first light component oil recovery mechanism connected from the degassing tower 3; the secondary deodorization mechanism includes a second preheater 4 connected from the degassing tower 3, a deodorizing tower 5 connected from the second preheater 4, and a discharge pipe 6, a second light component oil recovery mechanism and a third light component oil recovery mechanism respectively connected from the deodorizing tower 5.

[0027] The first light component oil recovery mechanism includes a first condenser 14 connected from the top of the degassing tower 3, a first vacuum buffer tank 15 connected from the first condenser 14, and a first pump 16 connected from the first vacuum buffer tank 15 to an external light component oil tank.

[0028] In this embodiment 2, the first preheater 2 preheats the transported biodiesel semi-finished product and vaporizes the light component oil in the biodiesel semi-finished product, and then inputs the heated biodiesel semi-finished product into the degassing tower 3 to remove the light component oil. The gaseous light component oil is output from the top of the degassing tower 3 to the first condenser 14, condensed into liquid in the first condenser 14, and then flows into the first vacuum buffer tank 15 for buffering. After buffering to a certain amount, it is pumped into the external light component oil tank for storage under the action of the first pump 16.

[0029] The first condenser 14 is connected to a circulating cooling water supply pipe A60 and a cooling water outlet pipe A61. The gaseous light component oil is liquefied after heat exchange with the cooling water.

[0030] The degassing tower 3 is connected to a steam pipe 56, which is connected to an external steam source and is provided with an eighth valve 57. The steam pipe 56 is used to pass external high-temperature steam into the degassing tower 3 to ensure that the degassing tower 3 functions normally.

[0031] Example 3

[0032] like Figure 1 As shown, the utility model provides a distillation deodorization system for biodiesel production, including a heating mechanism, and a primary deodorization mechanism and a secondary deodorization mechanism respectively connected to the heating mechanism; the primary deodorization mechanism includes a feed pipe 1 connected to an external biodiesel semi-finished product source, a first preheater 2 connected from the feed pipe 1, a degassing tower 3 connected from the first preheater 2, and a first light component oil recovery mechanism connected from the degassing tower 3; the secondary deodorization mechanism includes a second preheater 4 connected from the degassing tower 3, a deodorizing tower 5 connected from the second preheater 4, and a discharge pipe 6, a second light component oil recovery mechanism and a third light component oil recovery mechanism respectively connected from the deodorizing tower 5.

[0033] The first light component oil recovery mechanism includes a first condenser 14 connected from the top of the degassing tower 3, a first vacuum buffer tank 15 connected from the first condenser 14, and a first pump 16 connected from the first vacuum buffer tank 15 to an external light component oil tank.

[0034] A first pipe A17 is connected between the degassing tower 3 and the first condenser 14 , a first pipe B18 is connected between the first condenser 14 and the first vacuum buffer tank 15 , and a first pipe C19 is connected between the first vacuum buffer tank 15 and the first pump 16 .

[0035] Example 4

[0036] like Figure 1 As shown, the utility model provides a distillation deodorization system for biodiesel production, including a heating mechanism, and a primary deodorization mechanism and a secondary deodorization mechanism respectively connected to the heating mechanism; the primary deodorization mechanism includes a feed pipe 1 connected to an external biodiesel semi-finished product source, a first preheater 2 connected from the feed pipe 1, a degassing tower 3 connected from the first preheater 2, and a first light component oil recovery mechanism connected from the degassing tower 3; the secondary deodorization mechanism includes a second preheater 4 connected from the degassing tower 3, a deodorizing tower 5 connected from the second preheater 4, and a discharge pipe 6, a second light component oil recovery mechanism and a third light component oil recovery mechanism respectively connected from the deodorizing tower 5.

[0037] The second light component oil recovery mechanism includes a reflux tank 20 connected from the deodorization tower 5, a second condenser 21 connected from the reflux tank 20, a receiving tank 22 connected from the second condenser 21, and a second pump 23 connected from the receiving tank 22 and connected to an external light component oil tank.

[0038] In this embodiment 4, after a portion of the light oil component is removed from the semi-finished biodiesel product in the degassing tower 3, the product is fed into the second preheater 4. After further heating in the second preheater 4, the product is fed into the deodorizing tower 5. The deodorizing tower 5 distills and separates the light oil component in the semi-finished biodiesel product. The separated light oil component condenses at the top of the deodorizing tower 5 and overflows into the reflux tank 20. A portion of the light oil component in the reflux tank 20 flows back into the deodorizing tower 5, thereby ensuring that the separation of the light oil component in the deodorizing tower 5 is continuous and stable.

[0039] The remaining light component oil in the reflux tank 20 flows into the second condenser 21 located at a lower position. After being cooled by the second condenser 21, it flows into the receiving tank 22 located at a lower position. When the light component oil in the receiving tank 22 reaches a certain amount, it is pumped into the external light component oil tank for storage under the action of the second pump 23.

[0040] The top of the deodorizing tower 5 is connected to an external circulating cooling water supply. A cooling water inlet pipe B62 is connected to the deodorizing tower 5, and a cooling water outlet pipe B63 is connected to the deodorizing tower 5. The light component oil condenses into liquid oil after heat exchange with the cooling water at the top of the deodorizing tower 5. The second condenser 21 is connected to an external circulating cooling water supply. A cooling water inlet pipe C64 is connected to the second condenser 21, and a cooling water outlet pipe C65 is connected to the second condenser 21. The liquid light component oil is further cooled within the second condenser 21 before flowing into the receiving tank 22.

[0041] Example 5

[0042] like Figure 1 As shown, the utility model provides a distillation deodorization system for biodiesel production, including a heating mechanism, and a primary deodorization mechanism and a secondary deodorization mechanism respectively connected to the heating mechanism; the primary deodorization mechanism includes a feed pipe 1 connected to an external biodiesel semi-finished product source, a first preheater 2 connected from the feed pipe 1, a degassing tower 3 connected from the first preheater 2, and a first light component oil recovery mechanism connected from the degassing tower 3; the secondary deodorization mechanism includes a second preheater 4 connected from the degassing tower 3, a deodorizing tower 5 connected from the second preheater 4, and a discharge pipe 6, a second light component oil recovery mechanism and a third light component oil recovery mechanism respectively connected from the deodorizing tower 5.

[0043] The second light component oil recovery mechanism includes a reflux tank 20 connected from the deodorization tower 5, a second condenser 21 connected from the reflux tank 20, a receiving tank 22 connected from the second condenser 21, and a second pump 23 connected from the receiving tank 22 and connected to an external light component oil tank.

[0044] An overflow pipe 24 is connected between the deodorizing tower 5 and the reflux tank 20. A reflux pipe 25 is connected to the reflux tank 20 and connected to the deodorizing tower 5. A third valve 30 is provided on the reflux pipe 25. A second pipe A26 is connected between the reflux tank 20 and the second condenser 21. A second pipe B27 is connected between the second condenser 21 and the receiving tank 22. A second pipe C28 is connected between the receiving tank 22 and the second pump 23. A second pipe D29 is connected between the second pump 23 and the external light component oil tank. A second pipe E31 is connected to the second pipe D29. A fourth valve 32 and a fifth valve 33 are provided on the second pipe D29 and the second pipe E31, respectively.

[0045] In this embodiment 5, the light component oil condensed at the top of the deodorizing tower 5 overflows into the reflux tank 20 through the overflow pipe 24. The light component oil in the reflux tank 20 then flows back into the deodorizing tower 5 through the reflux pipe 25. A third valve 30 is used to control the opening or closing of the reflux pipe 25 when needed. The light component oil in the reflux tank 20 flows into the second condenser 21 through the second pipe A26. The cooled light component oil in the second condenser 21 flows into the receiving tank 22 through the second pipe B27. The second pump 23 transfers the light component oil in the receiving tank 22 to an external light component oil tank via the second pipe D29. If impurities accumulate in the receiving tank 22 due to long-term use, the impurities in the receiving tank 22 are transported to an external waste collection area through the second pipe E31. The fourth valve 32 is used to open or close the second pipe D29, and the fifth valve 33 is used to open or close the second pipe E31.

[0046] Example 6

[0047] like Figure 1 As shown, the utility model provides a distillation deodorization system for biodiesel production, including a heating mechanism, and a primary deodorization mechanism and a secondary deodorization mechanism respectively connected to the heating mechanism; the primary deodorization mechanism includes a feed pipe 1 connected to an external biodiesel semi-finished product source, a first preheater 2 connected from the feed pipe 1, a degassing tower 3 connected from the first preheater 2, and a first light component oil recovery mechanism connected from the degassing tower 3; the secondary deodorization mechanism includes a second preheater 4 connected from the degassing tower 3, a deodorizing tower 5 connected from the second preheater 4, and a discharge pipe 6, a second light component oil recovery mechanism and a third light component oil recovery mechanism respectively connected from the deodorizing tower 5.

[0048] The third recovery mechanism includes a third pipe A34 connected from the top of the deodorizing tower 5, a third condenser 35 connected from the third pipe A34, a third pipe B36 connected from the third condenser 35, and a second buffer tank 37 connected from the third pipe B36.

[0049] In this embodiment 6, the third recovery mechanism is used to recover the gaseous light component oil that has not condensed at the top of the deodorizing tower 5. If the distilled light component oil is not completely condensed at the top of the deodorizing tower 5, some gaseous light component oil will remain at the top of the deodorizing tower 5. This light component oil is transferred from the top of the deodorizing tower 5 through the third pipe A34 to the third condenser 35. After further condensation and liquefaction in the third condenser 35, it flows through the third pipe B36 to the second buffer tank 37 located lower for buffering.

[0050] The third condenser 35 is externally connected to circulating cooling water. A cooling water inlet pipe D66 is connected to the third condenser 35 , and a cooling water outlet pipe D67 is connected to the third condenser 35 . The light component oil is condensed in the third condenser 35 and then flows into the second buffer tank 37 .

[0051] Example 7

[0052] like Figure 1 As shown, the utility model provides a distillation deodorization system for biodiesel production, including a heating mechanism, and a primary deodorization mechanism and a secondary deodorization mechanism respectively connected to the heating mechanism; the primary deodorization mechanism includes a feed pipe 1 connected to an external biodiesel semi-finished product source, a first preheater 2 connected from the feed pipe 1, a degassing tower 3 connected from the first preheater 2, and a first light component oil recovery mechanism connected from the degassing tower 3; the secondary deodorization mechanism includes a second preheater 4 connected from the degassing tower 3, a deodorizing tower 5 connected from the second preheater 4, and a discharge pipe 6, a second light component oil recovery mechanism and a third light component oil recovery mechanism respectively connected from the deodorizing tower 5.

[0053] The deodorizing tower 5 is connected to a concentrating mechanism, which includes a first concentrating pipe 7 connected from the deodorizing tower 5, a concentrating delivery pump 8 connected from the first concentrating pipe 7, a second concentrating pipe 9 connected from the concentrating delivery pump 8, a falling film evaporator 10 connected from the second concentrating pipe 9, and a third concentrating pipe 11 connected from the falling film evaporator 10 and connected to the deodorizing tower 5. A first valve 12 is provided on the second concentrating pipe 9. A discharge pipe 6 is connected from the second concentrating pipe 9 between the first valve 12 and the concentrating delivery pump 8, and a second valve 13 is provided on the discharge pipe 6.

[0054] In this embodiment 7, the semi-finished biodiesel in the deodorizing tower 5 is continuously circulated into the falling film evaporator 10 by utilizing the suction function of the concentration delivery pump 8 and the delivery functions of the first, second, and third concentration pipes 7, 9, and 11. The falling film evaporator 10 removes residual moisture from the semi-finished biodiesel, thereby concentrating the semi-finished biodiesel and facilitating the distillation and separation of the light component oil in the deodorizing tower 5. When the deodorizing tower 5 completes the distillation and separation of the light component oil, the second valve 13 is opened and the first valve 12 is closed. At this point, the remaining biodiesel in the deodorizing tower 5 is transported to the next step for further processing by the concentration delivery pump 8 and the discharge pipe 6.

[0055] Example 8

[0056] like Figure 1 As shown, the utility model provides a distillation deodorization system for biodiesel production, including a heating mechanism, and a primary deodorization mechanism and a secondary deodorization mechanism respectively connected to the heating mechanism; the primary deodorization mechanism includes a feed pipe 1 connected to an external biodiesel semi-finished product source, a first preheater 2 connected from the feed pipe 1, a degassing tower 3 connected from the first preheater 2, and a first light component oil recovery mechanism connected from the degassing tower 3; the secondary deodorization mechanism includes a second preheater 4 connected from the degassing tower 3, a deodorizing tower 5 connected from the second preheater 4, and a discharge pipe 6, a second light component oil recovery mechanism and a third light component oil recovery mechanism respectively connected from the deodorizing tower 5.

[0057] The deodorizing tower 5 is connected to a concentrating mechanism, which includes a first concentrating pipe 7 connected from the deodorizing tower 5, a concentrating delivery pump 8 connected from the first concentrating pipe 7, a second concentrating pipe 9 connected from the concentrating delivery pump 8, a falling film evaporator 10 connected from the second concentrating pipe 9, and a third concentrating pipe 11 connected from the falling film evaporator 10 and connected to the deodorizing tower 5. A first valve 12 is provided on the second concentrating pipe 9. A discharge pipe 6 is connected from the second concentrating pipe 9 between the first valve 12 and the concentrating delivery pump 8, and a second valve 13 is provided on the discharge pipe 6.

[0058] The heating mechanism includes an oil inlet pipe 38 connected from an external heat transfer oil source, a first input branch pipe 39, a second input branch pipe 40 and a third input branch pipe 41 connected from the oil inlet pipe 38 and respectively connected to the first preheater 2, the second preheater 4 and the falling film evaporator 10, a first output branch pipe 42, a second output branch pipe 43 and a third output branch pipe 44 connected from the first preheater 2, the second preheater 4 and the falling film evaporator 10 respectively, and an oil outlet pipe 45 connected from the first output branch pipe 42, the second output branch pipe 43 and the third output branch pipe 44 and connected to an external heat transfer oil recovery tank.

[0059] In this embodiment 8, the heat transfer oil is used to provide heat energy to the first preheater 2 , the second preheater 4 and the falling film evaporator 10 , so as to heat the semi-finished biodiesel product contained in the first preheater 2 , the second preheater 4 and the falling film evaporator 10 .

[0060] Example 9

[0061] like Figure 1As shown, the utility model provides a distillation deodorization system for biodiesel production, including a heating mechanism, and a primary deodorization mechanism and a secondary deodorization mechanism respectively connected to the heating mechanism; the primary deodorization mechanism includes a feed pipe 1 connected to an external biodiesel semi-finished product source, a first preheater 2 connected from the feed pipe 1, a degassing tower 3 connected from the first preheater 2, and a first light component oil recovery mechanism connected from the degassing tower 3; the secondary deodorization mechanism includes a second preheater 4 connected from the degassing tower 3, a deodorizing tower 5 connected from the second preheater 4, and a discharge pipe 6, a second light component oil recovery mechanism and a third light component oil recovery mechanism respectively connected from the deodorizing tower 5.

[0062] A third pump 46 and a fourth pump 47 are provided in parallel on the feed pipe 1, a fourth pipe 48 is connected between the first preheater 2 and the degassing tower 3, a fifth pipe 49 is connected between the degassing tower 3 and the second preheater 4, and a sixth pipe 54 is connected between the second preheater 4 and the deodorizing tower 5. A fifth pump 50 and a sixth valve 51 are sequentially provided on the fifth pipe 49 in the conveying direction, a heat exchange input pipe 52 is connected to the fifth pipe 49 between the fifth pump 50 and the sixth valve 51, and a heat exchange output pipe 53 is connected to the fifth pipe 49 between the second preheater 4 and the sixth valve 51.

[0063] In this embodiment 9, after the semi-finished biodiesel product is deodorized, it is fed to the next process for further processing to improve the purity of the finished biodiesel product. In the next process, the biodiesel is typically purified using a medium carbon tower and a high carbon tower. A condensing mechanism is located at the top of the medium carbon tower, where the vaporized biodiesel is condensed. A heat exchange input pipe 52 is used to feed the semi-finished biodiesel product transported from the degassing tower in this process into the condensing mechanism at the top of the medium carbon tower in the next process. Using the semi-finished biodiesel product as a condensing agent, the semi-finished biodiesel product undergoes heat exchange with gaseous biodiesel in the condensing mechanism in the next process. This not only condenses the biodiesel in the next process, but also further heats the semi-finished biodiesel product, saving energy. A heat exchange output pipe 53 is used to output the heat-exchanged semi-finished biodiesel product from the condensing mechanism in the next process to the second preheater 4.

[0064] A seventh valve 55 is provided on the heat exchange input pipe 52.

[0065] The first preheater 2, the degassing tower 3, the second preheater 4, the deodorizing tower 5, the concentration delivery pump 8, the falling film evaporator 10, the first valve 12, the second valve 13, the first condenser 14, the first vacuum buffer tank 15, the first pump 16, the reflux tank 17, the second condenser 21, the receiving tank 22, the second pump 23, the third valve 30, the fourth valve 32, the fifth valve 33, the third condenser 35, the second buffer tank 37, the third pump 46, the fourth pump 47, the fifth pump 50, the sixth valve 51, the seventh valve 55, and the eighth valve 57 used in the utility model are existing known electrical equipment and can be directly purchased and used on the market. The first preheater 2, the degassing tower 3, the second preheater 4, the deodorizing tower 5, the concentration delivery pump 8, the falling film evaporator 10, the first valve 12, the second valve 13, the first condenser 14, the first vacuum buffer tank 15, the first pump 16, the reflux tank 17, the second condenser 21, the receiving tank 22 , the second pump 23, the third valve 30, the fourth valve 32, the fifth valve 33, the third condenser 35, the second buffer tank 37, the third pump 46, the fourth pump 47, the fifth pump 50, the sixth valve 51, the seventh valve 55, and the eighth valve 57 are all structures, circuits, and control principles of the first preheater 2, the degassing tower 3, the second preheater 4, the deodorizing tower 5, the concentration transfer pump 8, the falling film evaporator 10, the first valve 12, the second valve 13, the first condenser 14, the first vacuum buffer tank 15, the first pump 16, the reflux tank 17, the second condenser 21, the receiving tank 22, the second pump 23, the third valve 30, the fourth valve 32, the fifth valve 33, the third condenser 35, the second buffer tank 37, the third pump 46, the fourth pump 47, the fifth pump 50, the sixth valve 51, the seventh valve 55, and the eighth valve 57 are all structures, circuits, and control principles of the first preheater 2, the degassing tower 3, the second preheater 4

[0066] Finally, it should be noted that the above embodiments are merely preferred embodiments of the present invention and are intended to illustrate the technical solutions of the present invention, rather than to limit them, and certainly not to limit the patent scope of the present invention. Although the present invention 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention. In other words, any changes or embellishments made to the main design concept and spirit of the present invention that have no substantive significance, provided that the technical problems they solve are still consistent with those of the present invention, should be included in the protection scope of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention in other related technical fields should also be included in the patent protection scope of the present invention.

Claims

1. A distillation deodorization system for biodiesel production, characterized in that: The invention comprises a heating mechanism, and a primary deodorizing mechanism and a secondary deodorizing mechanism respectively connected to the heating mechanism; the primary deodorizing mechanism comprises a feed pipe (1) connected to an external biodiesel semi-finished product source, a first preheater (2) connected to the feed pipe (1), a degassing tower (3) connected to the first preheater (2), and a first light component oil recovery mechanism connected to the degassing tower (3); the secondary deodorizing mechanism comprises a second preheater (4) connected to the degassing tower (3), a deodorizing tower (5) connected to the second preheater (4), and a discharge pipe (6), a second light component oil recovery mechanism, and a third light component oil recovery mechanism respectively connected to the deodorizing tower (5).

2. A distillation deodorization system for biodiesel production according to claim 1, characterized in that: The first light component oil recovery mechanism comprises a first condenser (14) connected from the top of the degassing tower (3), a first vacuum buffer tank (15) connected from the first condenser (14), and a first pump (16) connected from the first vacuum buffer tank (15) to an external light component oil tank.

3. A distillation deodorization system for biodiesel production according to claim 2, characterized in that: A first pipe A (17) is connected between the degassing tower (3) and the first condenser (14), a first pipe B (18) is connected between the first condenser (14) and the first vacuum buffer tank (15), and a first pipe C (19) is connected between the first vacuum buffer tank (15) and the first pump (16).

4. A distillation deodorization system for biodiesel production according to claim 1, characterized in that: The second light component oil recovery mechanism comprises a reflux tank (20) connected from the deodorization tower (5), a second condenser (21) connected from the reflux tank (20), a receiving tank (22) connected from the second condenser (21), and a second pump (23) connected from the receiving tank (22) and connected to an external light component oil tank.

5. A distillation deodorization system for biodiesel production according to claim 4, characterized in that: An overflow pipe (24) is connected between the deodorizing tower (5) and the reflux tank (20). A reflux pipe (25) is connected to the reflux tank (20). The reflux pipe (25) is connected to the deodorizing tower (5). A third valve (30) is provided on the reflux pipe (25). A second pipe A (26) is connected between the reflux tank (20) and the second condenser (21). A second pipe B (27) is connected between the second condenser (21) and the receiving tank (22). A second pipe C (28) is connected between the receiving tank (22) and the second pump (23). A second pipe D (29) is connected between the second pump (23) and the external light component oil tank. A second pipe E (31) is connected to the second pipe D (29). A fourth valve (32) and a fifth valve (33) are provided on the second pipe D (29) and the second pipe E (31), respectively.

6. A distillation deodorization system for biodiesel production according to claim 1, characterized in that: The third recovery mechanism includes a third pipe A (34) connected from the top of the deodorization tower (5), a third condenser (35) connected from the third pipe A (34), a third pipe B (36) connected from the third condenser (35), and a second buffer tank (37) connected from the third pipe B (36).

7. A distillation and deodorization system for biodiesel production according to claim 1, characterized in that: The deodorizing tower (5) is connected to a concentrating mechanism, which comprises a first concentrating pipe (7) connected to the deodorizing tower (5), a concentrating delivery pump (8) connected to the first concentrating pipe (7), a second concentrating pipe (9) connected to the concentrating delivery pump (8), a falling film evaporator (10) connected to the second concentrating pipe (9), and a third concentrating pipe (11) connected to the falling film evaporator (10) and connected to the deodorizing tower (5). The second concentrating pipe (9) is provided with a first valve (12). A discharge pipe (6) is connected to the second concentrating pipe (9) between the first valve (12) and the concentrating delivery pump (8), and the discharge pipe (6) is provided with a second valve (13).

8. A distillation and deodorization system for biodiesel production according to claim 7, characterized in that: The heating mechanism comprises an oil inlet pipe (38) connected from an external heat transfer oil source, a first input branch pipe (39), a second input branch pipe (40) and a third input branch pipe (41) connected from the oil inlet pipe (38) and respectively connected to a first preheater (2), a second preheater (4) and a falling film evaporator (10), a first output branch pipe (42), a second output branch pipe (43) and a third output branch pipe (44) connected from the first preheater (2), the second preheater (4) and the falling film evaporator (10), respectively, and an oil outlet pipe (45) connected from the first output branch pipe (42), the second output branch pipe (43) and the third output branch pipe (44) and connected to an external heat transfer oil recovery tank.

9. The distillation deodorization system for biodiesel production according to claim 1, characterized in that: A third pump (46) and a fourth pump (47) are arranged in parallel on the feed pipe (1); a fourth pipe (48) is connected between the first preheater (2) and the degassing tower (3); a fifth pipe (49) is connected between the degassing tower (3) and the second preheater (4); a sixth pipe (54) is connected between the second preheater (4) and the deodorizing tower (5); a fifth pump (50) and a sixth valve (51) are sequentially arranged on the fifth pipe (49) in the conveying direction; a heat exchange input pipe (52) is connected to the fifth pipe (49) between the fifth pump (50) and the sixth valve (51); and a heat exchange output pipe (53) is connected to the fifth pipe (49) between the second preheater (4) and the sixth valve (51).

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