Soap stock treatment system for biodiesel production

Abstract

The utility model discloses a soapstock treatment system for biodiesel production, which solves the technical problem of high energy consumption due to the fact that a stirring mechanism is arranged in an existing reaction tower. Comprising a reaction tower, and further comprises a reaction mechanism arranged in the reaction tower, a grease circulating mechanism which is led out from the inner bottom of the reaction tower and is connected into the reaction mechanism, and a methanol conveying mechanism, a steam generator, an acidification pool and an acid storage tank which are arranged outside the reaction tower and are respectively connected into the reaction mechanism, and the acid storage tank is connected into the acidification pool. The mixing disc A and the mixing disc B replace a stirring mechanism in an existing reaction tower, and in the using process, the mixing disc A and the mixing disc B enable acid oil and methyl alcohol to mutually convect for multiple times on the mixing disc A and the mixing disc B through the structures of the mixing disc A and the mixing disc B, so that the purpose of mixing the acid oil and the methyl alcohol is achieved; compared with the stirring mechanism in the existing reaction tower needing additional energy supply, the reaction mechanism disclosed by the utility model has the advantage that the energy consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of biodiesel, and particularly relates to a soapstock treatment system for biodiesel production. Background Technique

[0002] Soapstock is a by-product generated during the alkali refining of animal and vegetable oils and fats, and its components include water, fatty acid salts, oils and fats, phospholipids, etc. Direct discharge of soapstock will pollute the natural environment. Utilizing soapstock as a raw material to produce biodiesel not only protects the natural environment from pollution but also improves economic benefits.

[0003] In the prior art, when using soapstock to produce biodiesel, the soapstock is first acidified to obtain acidified oil, and then the acidified oil reacts with methanol under the action of a catalyst to generate biodiesel and by-products.

[0004] When using soapstock to produce biodiesel, a stirring mechanism is usually equipped in the existing reaction tower, so that the soapstock and methanol are fully mixed by stirring. The existing technical problem is that during the reaction between the soapstock and methanol, in order to fully mix the soapstock and methanol, it is necessary to continuously supply energy to the stirring mechanism to keep the stirring mechanism running, resulting in high energy consumption. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a soapstock treatment system for biodiesel production, and solve the technical problem of high energy consumption existing in the existing reaction tower equipped with a stirring mechanism.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] A soapstock treatment system for biodiesel production includes a reaction tower, and also includes a reaction mechanism arranged in the reaction tower, an oil circulation mechanism connected from the bottom of the reaction tower and connected to the reaction mechanism, and a methanol delivery mechanism, a steam generator, an acidification tank and an acid storage tank arranged outside the reaction tower and respectively connected to the reaction mechanism; the acid storage tank is connected to the acidification tank.

[0008] Further, the reaction mechanism includes an acid supplement pipe arranged in the reaction tower and connected from the acid storage tank, and several stages of mixing mechanisms evenly distributed from top to bottom in the reaction tower and located below the acid supplement pipe; the steam generator is connected to the mixing mechanism, and the acidification tank and the methanol delivery mechanism are respectively connected to the topmost stage of the mixing mechanism, and the upper and lower adjacent two-stage mixing mechanisms are connected to each other.

[0009] Further, the mixing mechanism includes a mixing disk A and a mixing disk B arranged up and down in the reaction tower. The mixing disk A is provided with a first outlet for communicating with the mixing disk B, and the mixing disk B is provided with a second outlet for communicating with the mixing disk A in the next-stage mixing mechanism.

[0010] Further, the mixing tray A includes a first mixing tray body horizontally arranged in the reaction tower. A number of annular liquid flow channels A are coaxially arranged on the first mixing tray body. Adjacent two annular liquid flow channels A are interconnected. The first outlet is led out from the annular liquid flow channel A and connected to the corresponding mixing tray B.

[0011] Further, two first flow slots are arranged between adjacent two annular liquid flow channels A, and the two first flow slots are distributed opposite to each other.

[0012] Further, the mixing tray B includes a second mixing tray body horizontally arranged in the reaction tower and vertically opposite to the mixing tray A. A number of annular liquid flow channels B are coaxially arranged on the second mixing tray body. Adjacent two annular liquid flow channels B are interconnected. The second outlet is led out from the annular liquid flow channel B and connected to the corresponding mixing tray A.

[0013] Further, two second flow slots are arranged between adjacent two annular liquid flow channels B, and the two second flow slots are distributed opposite to each other.

[0014] Further, the methanol delivery mechanism includes a methanol storage tank arranged outside the reaction tower, and a liquid pump led out from the methanol storage tank and connected to the reaction mechanism.

[0015] Further, a methanol recovery mechanism is also included between the reaction tower and the methanol delivery mechanism. The methanol recovery mechanism includes a vacuum pump led out from the top of the reaction tower, a primary condenser led out from the vacuum pump, a primary recovery tank led out from the primary condenser, a secondary condenser led out from the primary recovery tank, and a secondary recovery tank led out from the secondary condenser; the primary recovery tank and the secondary recovery tank are respectively connected to the methanol delivery mechanism.

[0016] Further, the grease circulation mechanism includes a biodiesel separator led out from the inner bottom of the reaction tower, a delivery pump A led out from the biodiesel separator, and a settling tank led out from the delivery pump A and connected to the reaction mechanism.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model has a simple structure, is scientifically and reasonably designed, and is convenient to use. The utility model uses the mixing tray A and the mixing tray B to replace the stirring mechanism in the existing reaction tower. During the use process, the mixing tray A and the mixing tray B use their own structures to make the acidified oil and methanol convect with each other multiple times on the mixing tray A and the mixing tray B, so as to achieve the purpose of mixing the acidified oil and methanol. Compared with the stirring mechanism in the existing reaction tower that requires additional energy supply, the reaction mechanism of the utility model reduces energy consumption. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the utility model.

[0020] Figure 2 It is the top view of mixing disk A.

[0021] Figure 3 It is the sectional view of mixing disk A.

[0022] Figure 4 It is the top view of mixing disk B.

[0023] Figure 5 It is the sectional view of mixing disk B.

[0024] Among them, the names corresponding to the reference numerals are:

[0025] 1 - reaction tower, 2 - steam generator, 3 - acidification tank, 4 - acid storage tank, 5 - acid supply pipe, 6 - mixing disk A, 7 - mixing disk B, 8 - first mixing disk body, 9 - first retaining edge, 10 - annular liquid flow channel A, 12 - first flow slot, 13 - first outlet, 14 - methanol storage tank, 15 - liquid pump, 16 - vacuum pump, 17 - primary condenser, 18 - primary recovery tank, 19 - secondary condenser, 20 - secondary recovery tank, 21 - biodiesel separator, 22 - transfer pump A, 23 - sedimentation tank, 24 - second mixing disk body, 25 - second retaining edge, 26 - annular liquid flow channel B, 27 - second flow slot, 28 - second outlet, 29 - first heating chamber, 30 - second heating chamber, 31 - slag discharge port, 32 - second transfer pump, 33 - third transfer pump, 34 - fourth transfer pump, 35 - first switch, 36 - second switch, 37 - third switch, 38 - fourth switch. Specific embodiments

[0026] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can be a direct connection, an indirect connection through an intermediate medium, or the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Embodiment 1

[0030] As Figures 1-5 shown, a soapstock treatment system for biodiesel production provided by the present utility model includes a reaction tower 1, and further includes a reaction mechanism disposed in the reaction tower 1, an oil circulation mechanism connected from the bottom inside the reaction tower 1 and connected to the reaction mechanism, and a methanol delivery mechanism, a steam generator 2, an acidification tank 3, and an acid storage tank 4 disposed outside the reaction tower 1 and respectively connected to the reaction mechanism; the acid storage tank 4 is connected to the acidification tank 3.

[0031] In this Embodiment 1, sulfuric acid is stored in the acid storage tank 4, and the sulfuric acid is used for acidifying soapstock and catalyzing the reaction in the reaction mechanism. The acidified oil can be obtained after the soapstock is acidified by sulfuric acid in the acidification tank 3. The acidified oil is introduced into the reaction mechanism, and the acidified oil and methanol react to generate biodiesel and by-products under the catalysis of sulfuric acid. The steam generator 2 is used to supply heat to the reaction mechanism. The steam provided by the steam generator 2 is introduced into the first heating chamber 29 to appropriately heat the mixing disk A, and the steam provided by the steam generator 2 is introduced into the second heating chamber 30 to appropriately heat the mixing disk B. In this way, by providing an appropriate temperature, the reaction between the acidified oil and methanol can be ensured to proceed normally.

[0032] A slag discharge port 31 is provided at the bottom of the reaction tower 1 for discharging the precipitates in the by-products. The oil circulation mechanism is used for collecting the generated biodiesel and at the same time for recovering the available components in the by-products, so that the available components can be reused. The methanol delivery mechanism is used to supply methanol to the reaction mechanism.

[0033] The structure of the present utility model is simple, scientifically reasonable in design, and convenient to use. The present utility model uses the mixing disk A and the mixing disk B to replace the stirring mechanism in the existing reaction tower. During the use process, the mixing disk A and the mixing disk B use their own structures to make the acidified oil and methanol convect with each other multiple times on the mixing disk A and the mixing disk B, so as to achieve the purpose of mixing the acidified oil and methanol. Compared with the stirring mechanism in the existing reaction tower that requires additional energy supply, the reaction mechanism of the present utility model reduces energy consumption.

[0034] The acidified oil in the acidification tank 3 is pumped into the reaction tower 1 by the third delivery pump 33. Sulfuric acid in the acid storage tank is pumped into the acidification tank 3 or the reaction tower 1 by the fourth delivery pump 34. A first switch 35 is provided between the fourth delivery pump 34 and the acidification tank 3, a second switch 36 is provided between the fourth delivery pump 34 and the reaction tower 1, a third switch 37 is provided between the methanol storage tank 14 and the liquid pump 15, and a fourth switch 38 is provided between the primary recovery tank 18, the secondary recovery tank 20 and the liquid pump 15.

[0035] The first switch 35 is used to open and close the delivery channel between the acidification tank 3 and the acid storage tank, the second switch 36 is used to open and close the delivery channel between the reaction tower 1 and the acid storage tank, the third switch 37 is used to open and close the delivery channel between the methanol storage tank 14 and the reaction tower 1, and the fourth switch 38 is used to open and close the delivery channels between the primary recovery tank 18 and the secondary recovery tank 20 and the reaction tower 1 respectively.

[0036] Example 2

[0037] As Figures 1-5 shown, a soapstock treatment system for biodiesel production provided by the present utility model includes a reaction tower 1, and further includes a reaction mechanism provided in the reaction tower 1, a grease circulation mechanism connected from the bottom of the reaction tower 1 and connected to the reaction mechanism, and a methanol delivery mechanism, a steam generator 2, an acidification tank 3 and an acid storage tank 4 provided outside the reaction tower 1 and respectively connected to the reaction mechanism; the acid storage tank 4 is connected to the acidification tank 3.

[0038] The reaction mechanism includes an acid supplement pipe 5 provided in the reaction tower 1 and connected from the acid storage tank 4, and several stages of mixing mechanisms evenly distributed from top to bottom in the reaction tower 1 and located below the acid supplement pipe 5; the steam generator 2 is connected to the mixing mechanism, the acidification tank 3 and the methanol delivery mechanism are respectively connected to the uppermost stage of the mixing mechanism, and the upper and lower adjacent stages of the mixing mechanisms are interconnected.

[0039] In this Example 2, the mixing mechanism is used to mix the acidified oil and methanol, and the reaction occurs synchronously during the mixing process of the acidified oil and methanol. The acid supplement pipe 5 is used to provide an acid catalyst for the reaction process of the acidified oil and methanol. After the acidified oil and methanol are mixed in the mixing mechanism at the upper level, they flow through the second outlet 28 to the mixing mechanism at the lower level. In the reaction tower 1, from top to bottom, in the order of the distribution of the mixing mechanisms, the acidified oil and methanol are mixed in multiple mixing mechanisms in sequence. In this way, it can ensure that the acidified oil and methanol are evenly mixed and the reaction is sufficient.

[0040] Example 3

[0041] As Figures 1-5As shown in the figure, a soapstock treatment system for biodiesel production provided by the present utility model includes a reaction tower 1, and further includes a reaction mechanism disposed in the reaction tower 1, an oil circulation mechanism connected from the bottom inside the reaction tower 1 and accessing the reaction mechanism, and a methanol delivery mechanism, a steam generator 2, an acidification tank 3, and an acid storage tank 4 disposed outside the reaction tower 1 and respectively accessing the reaction mechanism; the acid storage tank 4 accesses the acidification tank 3.

[0042] The reaction mechanism includes an acid supplement pipe 5 disposed in the reaction tower 1 and connected from the acid storage tank 4, and several stages of mixing mechanisms evenly distributed from top to bottom in the reaction tower 1 and located below the acid supplement pipe 5; the steam generator 2 accesses the mixing mechanism, and the acidification tank 3 and the methanol delivery mechanism respectively access the topmost mixing mechanism, and the upper and lower adjacent mixing mechanisms are interconnected.

[0043] The mixing mechanism includes a mixing disk A6 and a mixing disk B7 disposed up and down in the reaction tower 1. The mixing disk A6 is provided with a first outlet 13 for communicating with the mixing disk B7, and the mixing disk B7 is provided with a second outlet 28 for communicating with the mixing disk A6 in the next-stage mixing mechanism.

[0044] In Embodiment 3 of the present example, the acidified oil and methanol first undergo convective mixing on the mixing disk A6, then flow to the mixing disk B7 through the first outlet 13, and then undergo convective mixing on the mixing disk B7. In the same mixing mechanism, the mixing disk A6 and the mixing disk B7 perform double mixing on the acidified oil and methanol. Thus, the mixing effect of the acidified oil and methanol can be enhanced. The mixed solution after convective mixing on the mixing disk B7 flows through the second outlet 28 to the next-stage mixing mechanism for further mixing.

[0045] Embodiment 4

[0046] As Figures 1-5 As shown in the figure, a soapstock treatment system for biodiesel production provided by the present utility model includes a reaction tower 1, and further includes a reaction mechanism disposed in the reaction tower 1, an oil circulation mechanism connected from the bottom inside the reaction tower 1 and accessing the reaction mechanism, and a methanol delivery mechanism, a steam generator 2, an acidification tank 3, and an acid storage tank 4 disposed outside the reaction tower 1 and respectively accessing the reaction mechanism; the acid storage tank 4 accesses the acidification tank 3.

[0047] The reaction mechanism includes an acid supplement pipe 5 disposed in the reaction tower 1 and connected from the acid storage tank 4, and several stages of mixing mechanisms evenly distributed from top to bottom in the reaction tower 1 and located below the acid supplement pipe 5; the steam generator 2 accesses the mixing mechanism, and the acidification tank 3 and the methanol delivery mechanism respectively access the topmost mixing mechanism, and the upper and lower adjacent mixing mechanisms are interconnected.

[0048] The mixing mechanism includes a mixing disk A6 and a mixing disk B7 which are arranged vertically in the reaction tower 1. The mixing disk A6 is provided with a first outlet 13 for communicating with the mixing disk B7, and the mixing disk B7 is provided with a second outlet 28 for communicating with the mixing disk A6 in the next-stage mixing mechanism.

[0049] The mixing disk A6 includes a first mixing disk body 8 horizontally arranged in the reaction tower 1. The first mixing disk body 8 is provided with a plurality of annular liquid flow channels A10 distributed coaxially. Adjacent two annular liquid flow channels A10 are communicated with each other. The first outlet 13 is led out from the annular liquid flow channel A10 and connected to the corresponding mixing disk B7.

[0050] In Embodiment 4, as Figure 3 shown, along the radial direction from the axis of the first mixing disk body 8 to the outer edge of the first mixing disk body 8, the height of the inner bottom of the annular liquid flow channel A10 from the bottom of the first mixing disk body 8 increases in sequence. In this way, the position of the annular liquid flow channel A10 close to the outer edge of the first mixing disk body 8 is higher, and the acidified oil and methanol flow through the annular liquid flow channel A10 from the outer edge of the first mixing disk body 8 to the axis of the first mixing disk body 8.

[0051] As Figure 2 shown ( Figure 2 the arrows in the figure indicate the liquid flow direction), when the acidified oil and methanol flow from the annular liquid flow channel A10 at a high position to the annular liquid flow channel A10 at a low position, they are convectively mixed at the junction of the high-position annular liquid flow channel A10 and the low-position annular liquid flow channel A10.

[0052] At the beginning of the mixing of the acidified oil and methanol, in the uppermost mixing mechanism in the reaction tower 1, the acidified oil and methanol are respectively introduced into the annular liquid flow channel A10 at the outer edge of the first mixing disk body 8 from the relative positions of the first mixing disk body 8, and then the acidified oil and methanol flow through the annular liquid flow channel A10 from the outer edge of the first mixing disk body 8 to the axis of the first mixing disk body 8.

[0053] Embodiment 5

[0054] As Figures 1-5 shown, a soapstock treatment system for biodiesel production provided by the present utility model includes a reaction tower 1, and further includes a reaction mechanism arranged in the reaction tower 1, a grease circulation mechanism led out from the inner bottom of the reaction tower 1 and connected to the reaction mechanism, and a methanol delivery mechanism, a steam generator 2, an acidification tank 3 and an acid storage tank 4 which are arranged outside the reaction tower 1 and are respectively connected to the reaction mechanism; the acid storage tank 4 is connected to the acidification tank 3.

[0055] The reaction mechanism includes an acid supplement pipe 5 disposed in the reaction tower 1 and connected from the acid storage tank 4, and several stages of mixing mechanisms evenly distributed in the reaction tower 1 from top to bottom and located below the acid supplement pipe 5; the steam generator 2 is connected to the mixing mechanism, and the acidification tank 3 and the methanol delivery mechanism are respectively connected to the uppermost stage of the mixing mechanism, and the upper and lower adjacent stages of the mixing mechanism are interconnected.

[0056] The mixing mechanism includes a mixing disk A6 and a mixing disk B7 disposed up and down in the reaction tower 1. The mixing disk A6 is provided with a first outlet 13 for communicating with the mixing disk B7, and the mixing disk B7 is provided with a second outlet 28 for communicating with the mixing disk A6 in the next-stage mixing mechanism.

[0057] The mixing disk A6 includes a first mixing disk body 8 horizontally disposed in the reaction tower 1. The first mixing disk body 8 is provided with a plurality of coaxially distributed annular liquid flow channels A10. Adjacent two annular liquid flow channels A10 are interconnected, and the first outlet 13 is connected from the annular liquid flow channel A10 and connected to the corresponding mixing disk B7.

[0058] There are two first flow slots 12 between adjacent two annular liquid flow channels A10, and the two first flow slots 12 are distributed opposite to each other.

[0059] In this embodiment 5, a plurality of annular first baffle ribs 9 are coaxially arranged on the first mixing disk body 8. Two first flow slots 12 that partition the first baffle rib 9 are oppositely opened on the first baffle rib 9; the annular liquid flow channels A10 are opened between adjacent two first baffle ribs 9 and between the first baffle rib 9 and the axis of the first mixing disk body 8; adjacent two annular liquid flow channels A10 are interconnected through the first flow slots 12, and the first outlet 13 is located in the annular liquid flow channel A10 at the axis of the first mixing disk body 8. The connection line of the two first flow slots 12 on the first baffle rib 9 passes through the axis of the first mixing disk body 8.

[0060] As Figure 2 shown ( Figure 2 the arrows in the figure indicate the liquid flow direction), after the acidified oil and methanol are mixed into a mixed solution by the upper-stage mixing mechanism, they flow downward into the first mixing disk body 8 in the lower-stage mixing mechanism in two liquid streams through the second outlet 28, and the corresponding positions where the mixed liquid falls into the lower-stage first mixing disk body 8 are the relative positions of the outer edge of the first mixing disk body 8. In the lower-stage mixing mechanism, the position of the annular liquid flow channel A10 near the outer edge of the first mixing disk body 8 is higher. After the mixed liquid of the acidified oil and methanol flows from the outer edge of the first mixing disk body 8 to the annular liquid flow channel A10 at the axis of the first mixing disk body 8, it flows from the first outlet 13 into the same-stage mixing disk B7. During the process of the mixed liquid of the acidified oil and methanol flowing from the outer edge of the first mixing disk body 8 to the axis of the first mixing disk body 8, it flows at least a quarter of the arc path in the annular liquid flow channel A10 and then convectively mixes at the first flow slot 12.

[0061] Example 6

[0062] As Figures 1-5 shown, a soapstock treatment system for biodiesel production provided by the present utility model includes a reaction tower 1, and further includes a reaction mechanism disposed in the reaction tower 1, an oil circulation mechanism connected from the bottom inside the reaction tower 1 and connected to the reaction mechanism, and a methanol delivery mechanism, a steam generator 2, an acidification tank 3, and an acid storage tank 4 disposed outside the reaction tower 1 and respectively connected to the reaction mechanism; the acid storage tank 4 is connected to the acidification tank 3.

[0063] The reaction mechanism includes an acid supplement pipe 5 disposed in the reaction tower 1 and connected from the acid storage tank 4, and several stages of mixing mechanisms uniformly distributed from top to bottom in the reaction tower 1 and located below the acid supplement pipe 5; the steam generator 2 is connected to the mixing mechanism, and the acidification tank 3 and the methanol delivery mechanism are respectively connected to the uppermost stage of the mixing mechanism, and the upper and lower adjacent stages of the mixing mechanisms are interconnected.

[0064] The mixing mechanism includes a mixing disk A6 and a mixing disk B7 disposed up and down in the reaction tower 1. The mixing disk A6 is provided with a first outlet 13 for communicating with the mixing disk B7, and the mixing disk B7 is provided with a second outlet 28 for communicating with the mixing disk A6 in the next-stage mixing mechanism.

[0065] The mixing disk B7 includes a second mixing disk body 24 horizontally disposed in the reaction tower 1 and vertically opposite to the mixing disk A6. The second mixing disk body 24 is provided with a plurality of coaxially distributed annular liquid flow channels B26, and adjacent two annular liquid flow channels B26 are interconnected. The second outlet 28 is connected from the annular liquid flow channel B26 and connected to the corresponding mixing disk A6.

[0066] In this Example 6, as Figure 5 shown, along the radial direction from the axis of the second mixing disk body 24 to the outer edge of the second mixing disk body 24, the height of the bottom of the annular liquid flow channel B26 from the bottom of the second mixing disk body 24 decreases in sequence. Thus, the annular liquid flow channel B26 near the axis of the second mixing disk body 24 is at a higher position. After the acidified oil and methanol flow from the mixing disk A6 to the annular liquid flow channel B26 at the axis of the mixing disk B7 through the first outlet 13, the acidified oil and methanol flow from the axis of the second mixing disk body 24 to the outer edge of the second mixing disk body 24 through the annular liquid flow channel B26.

[0067] When the acidified oil and methanol flow from the annular liquid flow channel B26 at a high position to the annular liquid flow channel B26 at a low position, they are further convectively mixed at the connection between the high-position annular liquid flow channel B26 and the low-position annular liquid flow channel B26.

[0068] Example 7

[0069] As Figures 1-5As shown in the figure, a soapstock treatment system for biodiesel production provided by the utility model includes a reaction tower 1, and further includes a reaction mechanism disposed in the reaction tower 1, an oil circulation mechanism connected from the bottom inside the reaction tower 1 and connected to the reaction mechanism, and a methanol delivery mechanism, a steam generator 2, an acidification tank 3, and an acid storage tank 4 which are disposed outside the reaction tower 1 and are respectively connected to the reaction mechanism; the acid storage tank 4 is connected to the acidification tank 3.

[0070] The reaction mechanism includes an acid supply pipe 5 disposed in the reaction tower 1 and connected from the acid storage tank 4, and several stages of mixing mechanisms which are uniformly distributed from top to bottom in the reaction tower 1 and are located below the acid supply pipe 5; the steam generator 2 is connected to the mixing mechanism, and the acidification tank 3 and the methanol delivery mechanism are respectively connected to the uppermost stage of the mixing mechanism, and the upper and lower adjacent stages of the mixing mechanisms are connected to each other.

[0071] The mixing mechanism includes a mixing disk A6 and a mixing disk B7 which are disposed up and down in the reaction tower 1. A first outlet 13 for communicating with the mixing disk B7 is provided on the mixing disk A6, and a second outlet 28 for communicating with the mixing disk A6 in the next-stage mixing mechanism is opened on the mixing disk B7.

[0072] The mixing disk B7 includes a second mixing disk body 24 which is horizontally disposed in the reaction tower 1 and is vertically and oppositely distributed with the mixing disk A6. A plurality of coaxially distributed annular liquid flow channels B26 are provided on the second mixing disk body 24. Adjacent two annular liquid flow channels B26 are connected to each other, and the second outlet 28 is led out from the annular liquid flow channel B26 and connected to the corresponding mixing disk A6.

[0073] Two second flow slots 27 are provided between adjacent two annular liquid flow channels B26, and the two second flow slots 27 are oppositely distributed.

[0074] In this embodiment 7, a plurality of annular second retaining edges 25 are coaxially provided on the second mixing disk body 24. The annular liquid flow channels B26 are disposed between adjacent two second retaining edges 25 and between the second retaining edge 25 and the axis of the second mixing disk body 24. Two second flow slots 27 for separating the second retaining edge 25 are oppositely opened on the second retaining edge 25. Adjacent two annular liquid flow channels B26 are connected through the second flow slots 27; the second outlet 28 is opened at the bottom of the annular liquid flow channel B26 at the outer edge of the second mixing disk body 24.

[0075] As Figure 4 shown ( Figure 4(The arrow indicates the liquid flow direction), the connection line of the two second flow-through slots 27 on the second gear edge 25 passes through the axis of the second mixing disc body 24. The mixed liquid of acidified oil and methanol flows at least a quarter of the arc path in the annular liquid flow channel B26 and then undergoes convective mixing at the second flow-through slot 27. After the mixed liquid of acidified oil and methanol flows from the axis of the second mixing disc body 24 to the annular liquid flow channel B26 at the outer edge of the second mixing disc body 24, it is divided into two streams through the second outlet 28 and flows to the mixing mechanism located below to be further mixed within the mixing mechanism located below. The mixed liquid of acidified oil and methanol flows into this lower mixing mechanism from the relative position of the lower mixing mechanism.

[0076] Example 8

[0077] As Figures 1-5 shown, a soapstock treatment system for biodiesel production provided by the present utility model includes a reaction tower 1, and further includes a reaction mechanism disposed within the reaction tower 1, an oil circulation mechanism connected from the bottom inside the reaction tower 1 and connected to the reaction mechanism, and a methanol delivery mechanism, a steam generator 2, an acidification tank 3, and an acid storage tank 4 disposed outside the reaction tower 1 and respectively connected to the reaction mechanism; the acid storage tank 4 is connected to the acidification tank 3.

[0078] The methanol delivery mechanism includes a methanol storage tank 14 disposed outside the reaction tower 1, and a liquid pump 15 connected from the methanol storage tank 14 and connected to the reaction mechanism.

[0079] In this Example 8, methanol is stored in the methanol storage tank 14, and the liquid pump 15 is used to deliver the methanol in the methanol storage tank 14 to the reaction mechanism. The liquid pump 15 is connected to the uppermost mixing mechanism inside the reaction tower 1. Inside the reaction tower 1, methanol and acidified oil are mixed in the corresponding mixing mechanisms in sequence from top to bottom according to the distribution order of the mixing mechanisms.

[0080] Example 9

[0081] As Figures 1-5 shown, a soapstock treatment system for biodiesel production provided by the present utility model includes a reaction tower 1, and further includes a reaction mechanism disposed within the reaction tower 1, an oil circulation mechanism connected from the bottom inside the reaction tower 1 and connected to the reaction mechanism, and a methanol delivery mechanism, a steam generator 2, an acidification tank 3, and an acid storage tank 4 disposed outside the reaction tower 1 and respectively connected to the reaction mechanism; the acid storage tank 4 is connected to the acidification tank 3.

[0082] It further includes a methanol recovery mechanism disposed between the reaction tower 1 and the methanol delivery mechanism. The methanol recovery mechanism includes a vacuum pump 16 connected from the top of the reaction tower 1, a primary condenser 17 connected from the vacuum pump 16, a primary recovery tank 18 connected from the primary condenser 17, a secondary condenser 19 connected from the primary recovery tank 18, and a secondary recovery tank 20 connected from the secondary condenser 19; the primary recovery tank 18 and the secondary recovery tank 20 are respectively connected to the methanol delivery mechanism.

[0083] In this Embodiment 9, the primary condenser 17 and the secondary condenser 19 are used to condense methanol in the tail gas of the reaction tower 1, and the primary recovery tank 18 and the secondary recovery tank 20 are used to recover the condensed methanol. The liquid pump 15 pumps the recovered methanol into the reaction tower 1 for reuse.

[0084] Embodiment 10

[0085] As Figures 1-5 shown, a soapstock treatment system for biodiesel production provided by the present utility model includes a reaction tower 1, and further includes a reaction mechanism disposed in the reaction tower 1, a grease circulation mechanism connected from the bottom inside the reaction tower 1 and accessing the reaction mechanism, and a methanol delivery mechanism, a steam generator 2, an acidification tank 3, and an acid storage tank 4 which are disposed outside the reaction tower 1 and respectively access the reaction mechanism; the acid storage tank 4 accesses the acidification tank 3.

[0086] The grease circulation mechanism includes a biodiesel separator 21 connected from the bottom inside the reaction tower 1, a delivery pump A 22 connected from the biodiesel separator 21, and a settling tank 23 connected from the delivery pump A 22 and accessing the reaction mechanism.

[0087] In this Embodiment 10, the biodiesel separator 21 is used to separate the biodiesel generated in the reaction tower 1. The remaining glycerol, water, and partially unreacted grease are pumped into the settling tank 23 under the action of the delivery pump A 22. After removing the glycerol aqueous solution in the settling tank 23, the remaining grease is input into the reaction tower 1 for reuse under the action of the second delivery pump 32.

[0088] The third transfer pump 33, the fourth transfer pump 34, the first switch 35, the second switch 36, the third switch 37, the fourth switch 38, the second transfer pump 32, the reaction tower 1, the steam generator 2, the acidification tank 3, the liquid pump 15, the vacuum pump 16, the primary condenser 17, the secondary condenser 19, the biodiesel separator 21, the transfer pump A22 and the sedimentation tank 23 used in the present utility model are all existing known electrical devices and can be directly purchased and used in the market. Regarding the structures, circuits, and control principles of the third transfer pump 33, the fourth transfer pump 34, the first switch 35, the second switch 36, the third switch 37, the fourth switch 38, the second transfer pump 32, the reaction tower 1, the steam generator 2, the acidification tank 3, the liquid pump 15, the vacuum pump 16, the primary condenser 17, the secondary condenser 19, the biodiesel separator 21, the transfer pump A22 and the sedimentation tank 23, they are all existing known technologies. Therefore, the structures, circuits, and control principles of the third transfer pump 33, the fourth transfer pump 34, the first switch 35, the second switch 36, the third switch 37, the fourth switch 38, the second transfer pump 32, the reaction tower 1, the steam generator 2, the acidification tank 3, the liquid pump 15, the vacuum pump 16, the primary condenser 17, the secondary condenser 19, the biodiesel separator 21, the transfer pump A22 and the sedimentation tank 23 will not be elaborated herein.

[0089] Finally, it should be noted that: the above embodiments are only the preferred embodiments of the present utility model to illustrate the technical solutions of the present utility model, rather than to limit it, and certainly not to limit the patent scope of the present utility model; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and 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 utility model; that is to say, any meaningless modifications or polishing made on the main design concept and spirit of the present utility model, as long as the technical problems solved are still the same as those of the present utility model, should be included in the protection scope of the present utility model; in addition, directly or indirectly applying the technical solutions of the present utility model to other related technical fields shall similarly be included in the patent protection scope of the present utility model.

Claims

1. A soapstock treatment system for biodiesel production, comprising a reaction tower (1), characterized in that: It also includes a reaction mechanism arranged in the reaction tower (1), a grease circulation mechanism connected to the reaction mechanism from the bottom of the reaction tower (1), and a methanol delivery mechanism, a steam generator (2), an acidification tank (3) and an acid storage tank (4) arranged outside the reaction tower (1) and connected to the reaction mechanism respectively; the acid storage tank (4) is connected to the acidification tank (3); The reaction mechanism comprises an acid replenishing pipe (5) which is arranged in the reaction tower (1) and connected to the acid storage tank (4), and a plurality of mixing mechanisms which are evenly distributed from top to bottom in the reaction tower (1) and located below the acid replenishing pipe (5); the steam generator (2) is connected to the mixing mechanism, the acidification tank (3) and the methanol conveying mechanism are respectively connected to the uppermost mixing mechanism, and the upper and lower adjacent mixing mechanisms are connected to each other; The mixing mechanism comprises a mixing disk A (6) and a mixing disk B (7) which are arranged in a reaction tower (1) from top to bottom. The mixing disk A (6) is provided with a first outlet (13) for communicating with the mixing disk B (7). The mixing disk B (7) is provided with a second outlet (28) for communicating with the mixing disk A (6) in the next mixing mechanism.

2. A soapstock treatment system for biodiesel production according to claim 1, characterized in that: The mixing disk A (6) comprises a first mixing disk body (8) horizontally arranged in the reaction tower (1), and a plurality of coaxially distributed annular liquid flow channels A (10) are arranged on the first mixing disk body (8), two adjacent annular liquid flow channels A (10) are interconnected, and a first outlet (13) is connected from the annular liquid flow channel A (10) and connected to the corresponding mixing disk B (7).

3. A soapstock treatment system for biodiesel production according to claim 2, characterized in that: Two first circulation slots (12) are provided between two adjacent annular liquid flow channels A (10), and the two first circulation slots (12) are arranged opposite to each other.

4. A soapstock treatment system for biodiesel production according to claim 1, characterized in that: The mixing disk B (7) comprises a second mixing disk body (24) which is horizontally arranged in the reaction tower (1) and vertically opposite to the mixing disk A (6). The second mixing disk body (24) is provided with a plurality of coaxially distributed annular liquid flow channels B (26). Two adjacent annular liquid flow channels B (26) are interconnected. A second outlet (28) is connected from the annular liquid flow channel B (26) and connected to the corresponding mixing disk A (6).

5. A soapstock treatment system for biodiesel production according to claim 4, characterized in that: Two second flow slots (27) are provided between two adjacent annular liquid flow channels B (26), and the two second flow slots (27) are arranged opposite to each other.

6. A soapstock treatment system for biodiesel production according to claim 1, characterized in that: The methanol delivery mechanism comprises a methanol storage tank (14) arranged outside the reaction tower (1), and a liquid pump (15) which is connected to the reaction mechanism and receives liquid from the methanol storage tank (14).

7. A soapstock treatment system for biodiesel production according to claim 1, characterized in that: It also includes a methanol recovery mechanism disposed between the reaction tower (1) and the methanol delivery mechanism, the methanol recovery mechanism including a vacuum pump (16) connected from the top of the reaction tower (1), a primary condenser (17) connected from the vacuum pump (16), a primary recovery tank (18) connected from the primary condenser (17), a secondary condenser (19) connected from the primary recovery tank (18), and a secondary recovery tank (20) connected from the secondary condenser (19); the primary recovery tank (18) and the secondary recovery tank (20) are respectively connected to the methanol delivery mechanism.

8. The soapstock treatment system for biodiesel production according to claim 1, characterized in that: The oil circulation mechanism comprises a biodiesel separator (21) connected from the bottom of the reaction tower (1), a delivery pump A (22) connected from the biodiesel separator (21), and a sedimentation tank (23) connected from the delivery pump A (22) and connected to the reaction mechanism.

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