Alkyl glycoside production device
By installing sieve plates between blade layers on the stirring shaft of an alkyl glycoside production device, the problem of glucose self-aggregation at the bottom of the reactor was solved, thereby improving the color of the product and reducing the amount of hydrogen peroxide used.
Patent Information
- Application Number
- CN202422836936.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-20
AI Technical Summary
In existing alkyl glycoside production equipment, glucose easily precipitates and self-polymerizes at the bottom of the reactor, resulting in poor product color and a large amount of hydrogen peroxide bleaching consumption.
A sieve plate is set between the blade layers on the stirring shaft. The sieve plate has an aperture of 80 to 120 meshes and is located between the downward pressing blade area and the upward flipping blade area. The outer diameter of the sieve plate is larger than the diameter of the agitator and is designed in the shape of a ring or a rotating body. Part of the sieve plate extends upward close to the reactor wall to prevent glucose particles from accumulating at the bottom of the reactor.
It effectively reduces the chromaticity of the reactor discharge, reduces the amount of hydrogen peroxide used, and improves product quality.
Smart Images
Figure CN223324531U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an alkyl glycoside production device. Background Art
[0002] Alkyl polyglycoside, abbreviated as APG, is a new type of nonionic surfactant with comprehensive performance. Currently, alkyl polyglycoside is mainly prepared by reacting lauryl alcohol and glucose as raw materials. The reaction process is added with an acidic catalyst, and the reaction is carried out under conditions of 4KPa and 110-120℃ for 3-4 hours. The reaction equation is as follows:
[0003]
[0004] Glycosidation reaction is a liquid-solid two-phase reaction system. Two-phase mass transfer is very important for the reaction to proceed. Otherwise, the sugar alcohol reaction will not be sufficient, sugar will easily self-polymerize, resulting in poor product color. The solubility of glucose in polyols is extremely low. In order to ensure sufficient contact between the two phases, such as Figure 1 The liquid material inlet of the reaction device shown first adds lauryl alcohol to the reactor, which is heated by heat-conducting oil, and then sugar is added at a rate of 0.2 tons / minute (depending on the dispersion of sugar) through the solid material inlet. At the same time, the stirring speed is increased, an acidic catalyst is added, the feeding port is closed, and a vacuum reaction is carried out. However, it is difficult to avoid a small amount of glucose being deposited at the bottom of the reaction device and self-polymerizing during the reaction process. The alkyl glycoside has a high degree of polymerization, resulting in poor appearance of the reaction product and high product color. Hydrogen peroxide is subsequently used for bleaching, and a large amount of hydrogen peroxide is consumed. Utility Model Content
[0005] The utility model mainly solves the problem of high chroma of materials obtained by the existing alkyl glycoside production device and provides a new alkyl glycoside production device.
[0006] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:
[0007] An alkyl glycoside production device comprises a vertical alkyl glycoside synthesizer (5). An agitator is arranged in the alkyl glycoside synthesizer (5). The agitator comprises a vertical agitator shaft. A downward pressure blade area and an upward flipping blade area are arranged on the agitator shaft. The downward pressure blade area is located above the upward flipping blade area. The number of downward pressure blade layers contained in the downward pressure blade area is at least 1, and the number of upward flipping blade layers contained in the upward flipping blade area is at least 1. A sieve plate (9) is arranged between the blade layers on the agitator shaft.
[0008] The paddle interlayer sieve plate (9) is arranged on the stirring shaft, which reduces the accumulation of unreacted sugar particles at the bottom of the alkyl glycoside synthesizer (5), reduces the chromaticity of the product, and reduces the load of subsequent hydrogen peroxide decolorization.
[0009] Those skilled in the art understand that the so-called downward-pressing blade layer means that when the stirring shaft rotates in a preset rotation direction, the lower surface of the blade layer applies a downward thrust to the liquid material in contact with it, and the so-called upward-turning blade layer means that when the stirring shaft rotates in a preset rotation direction, the upper surface of the blade layer applies an upward thrust to the liquid material in contact with it.
[0010] In the above technical solution, the inter-blade sieve plate (9) is preferably located below the downward pressure blade area and above the upward flip blade area. This solution is superior to the solution in reducing the chromaticity of the reactor discharge when the inter-blade sieve plate (9) is located between the blade layers inside the downward pressure blade area.
[0011] In the above technical solution, the upward-turned blade area may optionally contain 1 to 2 upward-turned blade layers.
[0012] In the above technical solution, the number of layers of downward pressure blades contained in the downward pressure blade area can be 2 to 3.
[0013] In the above technical solution, it is preferred that the sieve plate (9) between the blade layers has a circular ring shape in a top view.
[0014] Those skilled in the art will readily understand that the inner hole of the annular ring is provided for the convenience of fixing the sieve plate (9) between the blade layers to the stirring shaft. The fixing method may be welding, and the fastening device (13) may be detachable.
[0015] In the above technical solution, the sieve plate preferably has an aperture of 80 to 120 mesh, such as, but not limited to, 90 mesh, 100 mesh, 110 mesh, and the like. The particle size of industrial glucose raw materials is generally 30 to 60 mesh. As the reaction proceeds, the particles gradually become smaller. However, glucose particles in this particle size range tend to agglomerate when they fall to the bottom of the container. When 80 to 120 mesh particles fall below the sieve, they can quickly react with the fatty alcohol as they are stirred by the bottom stirring paddle and are no longer prone to agglomeration. The aperture setting of the utility model is more conducive to the sieve plate intercepting large glucose particles under reaction conditions. When the glucose particles shrink to a size that can pass through the sieve plate as the reaction proceeds, even if they fall to the bottom of the reactor, they will quickly react with the fatty alcohol, preventing glucose from accumulating and agglomerating at the bottom of the reactor, which helps to reduce the chromaticity of the reactor product.
[0016] In the above technical solution, the outer diameter of the ring is preferably larger than the stirring diameter of the stirrer. This is more conducive to the effective screening of glucose particles entering the reactor by the sieve plate (9) between the blade layers, and is conducive to screening large glucose particles under reaction conditions to facilitate the reaction and prevent glucose from accumulating at the bottom of the reactor, which is conducive to reducing the color of the reactor product.
[0017] In the above technical solution, the sieve plate (9) between the blade layers can be provided with a circular ring portion from a position close to the stirring shaft to a position close to the reactor wall.
[0018] In the above technical solution, preferably, from the position near the stirring shaft to the position near the reactor wall, the sieve plate (9) between the blade layers has the shape of the side surface of the rotating body, and the upper bottom surface of the rotating body is larger than the lower bottom surface of the rotating body.
[0019] In the above technical solution, preferably, for any two points A and B on the side of the rotating body, when the distance between point A and the stirring axis is greater than the distance between point B and the stirring axis, point A is located higher than point B. This arrangement helps prevent glucose particles from moving too quickly toward the edge of the sieve plate due to centrifugal force without being fully screened, thereby improving the screening effect of the sieve plate.
[0020] In the above technical solution, it is preferred that the side surface of the rotating body is a truncated cone side surface or a spherical cap with a center hole.
[0021] In the above technical solution, the ratio of the spherical crown bottom diameter to the spherical crown height is preferably 10 to 60, for example but not limited to 15, 20, 25, 30, 35, 40, 45, 50, 55, etc.
[0022] In the above technical solution, it is preferred that the portion of the paddle interlayer sieve plate (9) close to the reactor wall has an upward cylindrical extension. This arrangement can effectively prevent the glucose particles from being thrown out of the sieve plate from the edge of the paddle interlayer sieve plate (9) by the centrifugal force of the rotation during the screening process of the glucose particles on the paddle interlayer sieve plate (9) along with the stirring shaft, thereby reducing the probability of glucose particles gathering at the bottom of the reactor and reducing the color of the reactor discharge.
[0023] The chromaticity in this utility model is measured using GB / T 19464-2014.
[0024] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic diagram of the first embodiment of the present utility model;
[0026] Figure 2 This is a schematic diagram of the second embodiment of the present utility model;
[0027] Figure 3 This is a schematic diagram of the third embodiment of the present utility model;
[0028] Figure 4 This is a schematic diagram of the fourth embodiment of the present invention.
[0029] Figure 5 This is a schematic diagram of an existing alkyl glycoside production device;
[0030] Figures 1 to 5middle:
[0031] 1 is a power unit;
[0032] 2 is the solid material inlet;
[0033] 3 is the pressure relief port;
[0034] 4 is the preset rotation direction of the stirring shaft;
[0035] 5 is an alkyl glycoside synthesizer;
[0036] 6 is the upper blade layer;
[0037] 7 is a heating device;
[0038] 8 is the middle blade layer;
[0039] 9 is a sieve plate between the blade layers;
[0040] 10 is the lower blade layer;
[0041] 11 is the discharge port of the alkyl glycoside synthesizer;
[0042] 12 is a delivery pump;
[0043] 13 is a sieve plate fixing device;
[0044] 14 is the synthesizer loop channel;
[0045] 15 is the liquid material inlet;
[0046] 16 is a vacuum pipe;
[0047] 17 is a demister. DETAILED DESCRIPTION
[0048] (zero), prior art
[0049] 1. Existing alkyl glycoside production equipment
[0050] See also Figure 5 .
[0051] No paddle interlayer screen plates are used.
[0052] Specifically:
[0053] The invention discloses an alkyl glycoside production device, comprising a vertical alkyl glycoside synthesizer (5). An agitator is arranged in the alkyl glycoside synthesizer (5), wherein the agitator comprises a vertical agitator shaft, and a downward pressure blade zone and an upward flip blade zone are arranged on the agitator shaft. The downward pressure blade zone is located above the upward flip blade zone, and the downward pressure blade zone has two downward pressure blade layers, and the upward flip blade zone has one upward flip blade layer, that is, the agitator shaft is sequentially provided with the following three layers of blades from top to bottom: an upper blade layer (6), a middle blade layer (8) and a lower blade layer (10), wherein the upper blade layer (6) and the middle blade layer (8) are both downward pressure blade layers, and the lower blade layer (10) is an upward flip blade layer.
[0054] 2. Operation examples of existing alkyl glycoside production equipment
[0055] 2.1. Dimensions and shape of vertical alkyl glycoside synthesizer (5):
[0056] The length of the cylindrical part of the reactor is 3.2 m, and the diameter of the cylindrical part is 3.2 m.
[0057] 2.2, agitator:
[0058] The diameter of the stirring shaft is 15 cm, the length of the stirring shaft is 3.1 m, the stirring diameter is 2.1 m, and the intervals between the upper blade layer (6) and the middle blade layer (8) and between the middle blade layer (8) and the lower blade layer (10) are both 90 cm.
[0059] 2.3 Operation process
[0060] 15 tons of C8-C10 fatty alcohol are added to the alkyl glycoside synthesizer (5), stirring is started at a speed of 45 r / min, and the vacuum system (16) is turned on. The heating temperature is turned on at a rate of 18°C per hour. When the alcohol temperature of the alkyl glycoside synthesizer (5) reaches 70°C, the temperature is maintained, the pressure relief port (3) is opened, and then the solid material inlet (2) is opened. The pressure relief port (3) is closed, and 5 tons of solid glucose (30-60 mesh) are added at a speed of 0.2 tons / minute, while stirring is increased to 72 r / min. After the glucose is added, 55 kg of acidic catalyst (p-toluenesulfonic acid) is immediately added, the solid material inlet (2) is closed, and the stirring speed is turned on to 90 r / min.
[0061] Continue to raise the temperature at a rate of 18°C per hour, control the vacuum to maintain at -0.096~-0.097Mpa, and when the material in the kettle reaches 95°C, open the kettle bottom valve and start the transfer pump (12) for internal circulation. Pay attention to the temperature rise and vacuum conditions. When the temperature in the kettle rises to 110°C, maintain this temperature for 6 hours, transfer the material to the neutralization kettle, start the stirring cycle and cool it to 75°C. Add magnesium oxide for neutralization. Then use 50% sodium hydroxide to slightly adjust the pH value and control it to 7.8-8.0. Transfer it to the transfer kettle for standby use. Prepare for dealcoholization. Preheat the falling film evaporator to 138°C in advance and start the falling film and scraper vacuum systems. When the vacuum system reaches a vacuum gauge of -0.098~-0.099Mpa, slowly feed the falling film evaporator with a flow rate controlled at 1000kg / h. Carry out the first stage of dealcoholization. After 20 minutes, start the scraper evaporator feed pump to feed the scraper evaporator. Before the scraper is fed, the scraper evaporator temperature is controlled at 160°C. After the scraper is fed, the scraper motor is started (at 110 rpm) for the second stage of dealcoholization. After 30 minutes, the scraper discharge pump is activated. After dealcoholization, the alkyl glycoside is transferred to a dissolution vessel, dissolved to a crude product with a 55% alkyl glycoside content, and then transferred to a decolorization vessel. Once in the decolorization vessel, 10 kg of 50% hydrogen peroxide is added per ton of crude product to decolorize the product to obtain the final product.
[0062] The final product had a chromaticity value of 48 Hazen.
[0063] (1) The first embodiment of the present utility model
[0064] 1. The first embodiment of the present invention is an alkyl glycoside production device
[0065] See also Figure 1 .
[0066] The only difference from the prior art is that a screen plate (9) is provided between the blade layers.
[0067] Specifically:
[0068] The invention discloses an alkyl glycoside production device, comprising a vertical alkyl glycoside synthesizer (5). An agitator is arranged in the alkyl glycoside synthesizer (5), wherein the agitator comprises a vertical agitator shaft, and a downward pressure blade zone and an upward flip blade zone are arranged on the agitator shaft. The downward pressure blade zone is located above the upward flip blade zone, and the downward pressure blade zone has two downward pressure blade layers, and the upward flip blade zone has one upward flip blade layer, that is, the agitator shaft is sequentially provided with the following three layers of blades from top to bottom: an upper blade layer (6), a middle blade layer (8) and a lower blade layer (10), wherein the upper blade layer (6) and the middle blade layer (8) are both downward pressure blade layers, and the lower blade layer (10) is an upward flip blade layer.
[0069] The paddle interlayer sieve plate (9) is located below the downward-pressing paddle area and above the upward-turning paddle area.
[0070] The paddle interlayer sieve plate (9) has a circular ring shape in a top view.
[0071] The pore size of the sieve plate is 100 mesh.
[0072] The outer diameter of the ring is larger than the stirring diameter of the stirrer.
[0073] From the position near the stirring shaft to the position near the reactor wall, the blade interlayer sieve plate (9) is a circular ring-shaped portion; the position of the blade interlayer sieve plate (9) close to the reactor wall does not have an upwardly extending portion, that is, the blade interlayer sieve plate (9) is circular ring-shaped.
[0074] A sieve plate fixing device (3) is welded below the center hole of the sieve plate (9) between the blade layers. The fixing device is used to fix the sieve plate (9) between the blade layers to the stirring shaft. The sieve plate fixing device (3) includes a locking screw connected to the cylindrical barrel and perpendicular to the side of the cylindrical barrel. The center of the center hole of the ring is on the axis of the cylindrical barrel, and the diameter of the center hole of the ring is the same as the inner diameter of the cylindrical barrel.
[0075] 2. Example of operation of alkyl glycoside production unit
[0076] 2.1. Dimensions and shape of the vertical alkyl glycoside synthesizer (5)
[0077] Same as the above-mentioned prior art section 2.1.
[0078] 2.2. Agitator
[0079] Except for the following parameters, the rest are the same as those in Section 2.2 of the prior art:
[0080] The diameter of the central hole of the blade interlayer sieve plate (9) is 15.1 cm, and the diameter of the outer edge circumference of the blade interlayer sieve plate (9) is 3.1 m. The blade interlayer sieve plate (9) is arranged at the lower 1 / 3 of the interval between the middle blade layer (8) and the lower blade layer (10).
[0081] 2.3 Operation process
[0082] The operation process is the same as the above-mentioned prior art. After the operation, the chromaticity value of the final product is 36 Hazen.
[0083] (2) Second embodiment of the present utility model
[0084] 1. Alkyl glycoside production device according to the second embodiment of the present invention
[0085] See also Figure 2 .
[0086] The only difference from the prior art is that a screen plate (9) is provided between the blade layers.
[0087] Specifically:
[0088] The invention discloses an alkyl glycoside production device, comprising a vertical alkyl glycoside synthesizer (5). An agitator is arranged in the alkyl glycoside synthesizer (5), wherein the agitator comprises a vertical agitator shaft, and a downward pressure blade zone and an upward flip blade zone are arranged on the agitator shaft. The downward pressure blade zone is located above the upward flip blade zone, and the downward pressure blade zone has two downward pressure blade layers, and the upward flip blade zone has one upward flip blade layer, that is, the agitator shaft is sequentially provided with the following three layers of blades from top to bottom: an upper blade layer (6), a middle blade layer (8) and a lower blade layer (10), wherein the upper blade layer (6) and the middle blade layer (8) are both downward pressure blade layers, and the lower blade layer (10) is an upward flip blade layer.
[0089] The paddle interlayer sieve plate (9) is located below the downward-pressing paddle area and above the upward-turning paddle area.
[0090] The paddle interlayer sieve plate (9) has a circular ring shape in a top view.
[0091] The pore size of the sieve plate is 100 mesh.
[0092] The outer diameter of the ring is larger than the stirring diameter of the stirrer.
[0093] From the position close to the stirring shaft to the position close to the reactor wall, the blade interlayer sieve plate (9) has an annular portion, and the position of the blade interlayer sieve plate (9) close to the reactor wall has an upward cylindrical extension.
[0094] A sieve plate fixing device (3) is welded below the center hole of the sieve plate (9) between the blade layers. The fixing device is used to fix the sieve plate (9) between the blade layers to the stirring shaft. The sieve plate fixing device (3) includes a locking screw connected to the cylindrical barrel and perpendicular to the side of the cylindrical barrel. The center of the center hole of the ring is on the axis of the cylindrical barrel, and the diameter of the center hole of the ring is the same as the inner diameter of the cylindrical barrel.
[0095] 2. Example of operation of alkyl glycoside production unit
[0096] 2.1. Dimensions and shape of vertical alkyl glycoside synthesizer (5):
[0097] Same as the above-mentioned prior art section 2.1.
[0098] 2.2, agitator:
[0099] Except for the following parameters, the rest are the same as those in Section 2.2 of the prior art:
[0100] The diameter of the center hole of the inter-blade sieve plate (9) is 15.1 cm, and the diameter of the outer edge of the inter-blade sieve plate (9) is 3.1 m. The annular portion of the inter-blade sieve plate (9) is arranged at the lower 1 / 3 of the interval between the middle blade layer (8) and the lower blade layer (10). The cylindrical extension of the inter-blade sieve plate (9) is 30 cm high.
[0101] 2.3 Operation process
[0102] The operation process is the same as the above-mentioned prior art. After the operation, the chromaticity value of the final product is 29 Hazen.
[0103] (3) The third embodiment of the present utility model
[0104] 1. Alkyl glycoside production device according to the third embodiment of the present invention
[0105] See also Figure 3 .
[0106] The only difference from the prior art is that a screen plate (9) is provided between the blade layers.
[0107] Specifically:
[0108] The invention discloses an alkyl glycoside production device, comprising a vertical alkyl glycoside synthesizer (5). An agitator is arranged in the alkyl glycoside synthesizer (5), wherein the agitator comprises a vertical agitator shaft, and a downward pressure blade zone and an upward flip blade zone are arranged on the agitator shaft. The downward pressure blade zone is located above the upward flip blade zone, and the downward pressure blade zone has two downward pressure blade layers, and the upward flip blade zone has one upward flip blade layer, that is, the agitator shaft is sequentially provided with the following three layers of blades from top to bottom: an upper blade layer (6), a middle blade layer (8) and a lower blade layer (10), wherein the upper blade layer (6) and the middle blade layer (8) are both downward pressure blade layers, and the lower blade layer (10) is an upward flip blade layer.
[0109] The paddle interlayer sieve plate (9) is located below the downward-pressing paddle area and above the upward-turning paddle area.
[0110] The paddle interlayer sieve plate (9) has a circular ring shape in a top view.
[0111] The pore size of the sieve plate is 100 mesh.
[0112] The outer diameter of the ring is larger than the stirring diameter of the stirrer.
[0113] From the position close to the stirring shaft to the position close to the reactor wall, the paddle interlayer sieve plate (9) has the shape of the side surface of the rotating body, and the upper bottom surface of the rotating body is larger than the lower bottom surface of the rotating body.
[0114] For any two points A and B on the side of the rotating body, when the distance between point A and the stirring axis is greater than the distance between point B and the stirring axis, the position of point A is higher than the position of point B.
[0115] The side surface of the rotating body is a spherical crown provided with a central hole.
[0116] The position of the sieve plate (9) between the blade layers close to the reactor wall is provided with an upward cylindrical extension.
[0117] A sieve plate fixing device (3) is welded below the center hole of the sieve plate (9) between the blade layers. The fixing device is used to fix the sieve plate (9) between the blade layers to the stirring shaft. The sieve plate fixing device (3) includes a locking screw connected to the cylindrical barrel and perpendicular to the side of the cylindrical barrel. The center of the center hole of the ring is on the axis of the cylindrical barrel, and the diameter of the center hole of the ring is the same as the inner diameter of the cylindrical barrel.
[0118] 2. Example of operation of alkyl glycoside production unit
[0119] 2.1. Dimensions and shape of vertical alkyl glycoside synthesizer (5):
[0120] Same as the above-mentioned prior art section 2.1.
[0121] 2.2, agitator:
[0122] Except for the following parameters, the rest are the same as those in Section 2.2 of the prior art:
[0123] The diameter of the center hole of the inter-blade sieve plate (9) is 15.1 cm, and the diameter of the outer edge of the inter-blade sieve plate (9) (i.e., the bottom diameter of the spherical cap) is 3.1 m. The lowest point of the inter-blade sieve plate (9) is located at the lower 1 / 3 of the interval between the middle blade layer (8) and the lower blade layer (10). The height of the spherical cap is 15 cm, and the height of the cylindrical extension of the inter-blade sieve plate (9) is 15 cm.
[0124] 2.3 Operation process
[0125] The operation process is the same as the above-mentioned prior art. After the operation, the chromaticity value of the final product is 19 Hazen. (IV) The fourth embodiment of the present utility model
[0126] 1. The fourth embodiment of the present utility model is an alkyl glycoside production device
[0127] See also Figure 4 .
[0128] The only difference from the third embodiment is the location of the screen plate (9) between the blade layers.
[0129] Specifically:
[0130] The invention discloses an alkyl glycoside production device, comprising a vertical alkyl glycoside synthesizer (5). An agitator is arranged in the alkyl glycoside synthesizer (5), wherein the agitator comprises a vertical agitator shaft, and a downward pressure blade zone and an upward flip blade zone are arranged on the agitator shaft. The downward pressure blade zone is located above the upward flip blade zone, and the downward pressure blade zone has two downward pressure blade layers, and the upward flip blade zone has one upward flip blade layer, that is, the agitator shaft is sequentially provided with the following three layers of blades from top to bottom: an upper blade layer (6), a middle blade layer (8) and a lower blade layer (10), wherein the upper blade layer (6) and the middle blade layer (8) are both downward pressure blade layers, and the lower blade layer (10) is an upward flip blade layer.
[0131] The inter-blade layer sieve plate (9) is located below the upper blade layer (6) and above the middle blade layer (8).
[0132] The paddle interlayer sieve plate (9) has a circular ring shape in a top view.
[0133] The pore size of the sieve plate is 100 mesh.
[0134] The outer diameter of the ring is larger than the stirring diameter of the stirrer.
[0135] From the position close to the stirring shaft to the position close to the reactor wall, the paddle interlayer sieve plate (9) has the shape of the side surface of the rotating body, and the upper bottom surface of the rotating body is larger than the lower bottom surface of the rotating body.
[0136] For any two points A and B on the side of the rotating body, when the distance between point A and the stirring axis is greater than the distance between point B and the stirring axis, the position of point A is higher than the position of point B.
[0137] The side surface of the rotating body is a spherical crown provided with a central hole.
[0138] The position of the sieve plate (9) between the blade layers close to the reactor wall is provided with an upward cylindrical extension.
[0139] A sieve plate fixing device (3) is welded below the center hole of the sieve plate (9) between the blade layers. The fixing device is used to fix the sieve plate (9) between the blade layers to the stirring shaft. The sieve plate fixing device (3) includes a locking screw connected to the cylindrical barrel and perpendicular to the side of the cylindrical barrel. The center of the center hole of the ring is on the axis of the cylindrical barrel, and the diameter of the center hole of the ring is the same as the inner diameter of the cylindrical barrel.
[0140] 2. Example of operation of alkyl glycoside production unit
[0141] 2.1. Dimensions and shape of the vertical alkyl glycoside synthesizer (5)
[0142] Same as the above-mentioned prior art section 2.1.
[0143] 2.2. Agitator
[0144] Except for the following parameters, the rest are the same as those in Section 2.2 of the prior art:
[0145] The diameter of the center hole of the inter-blade sieve plate (9) is 15.1 cm, and the diameter of the outer edge of the inter-blade sieve plate (9) (i.e., the bottom diameter of the spherical cap) is 3.1 m. The lowest point of the inter-blade sieve plate (9) is located at the lower 1 / 3 of the interval between the middle blade layer (8) and the lower blade layer (10). The height of the spherical cap is 15 cm, and the height of the cylindrical extension of the inter-blade sieve plate (9) is 15 cm.
[0146] 2.3 Operation process
[0147] The operation process is the same as the above-mentioned prior art. After the operation, the chromaticity value of the final product is 43 Hazen.
Claims
1. An alkyl glycoside production device, comprising a vertical alkyl glycoside synthesizer (5), wherein an agitator is provided in the alkyl glycoside synthesizer (5), wherein the agitator comprises a vertical agitator shaft, and a downward pressure blade area and an upward flip blade area are provided on the agitator shaft, wherein the downward pressure blade area is located above the upward flip blade area, wherein the downward pressure blade area comprises at least one downward pressure blade layer, and the upward flip blade area comprises at least one upward flip blade layer, wherein the device is characterized in that: A sieve plate (9) is provided between the blade layers on the stirring shaft.
2. The production device according to claim 1, characterized in that: The paddle interlayer sieve plate (9) is located below the downward-pressing paddle area and above the upward-turning paddle area.
3. The production device according to claim 2, characterized in that: The upward-turned blade area contains 1 to 2 upward-turned blade layers.
4. The production device according to claim 2, characterized in that: The number of downward pressure blade layers contained in the downward pressure blade area is 2 to 3.
5. The production device according to claim 1, characterized in that: The paddle interlayer sieve plate (9) has a circular ring shape in a top view; and / or the sieve plate has an aperture of 80 to 120 meshes.
6. The production device according to claim 5, characterized in that: The outer diameter of the ring is larger than the stirring diameter of the stirrer.
7. The production device according to claim 5, characterized in that: From the position close to the stirring shaft to the position close to the reactor wall, the paddle interlayer sieve plate (9) has a circular ring portion; or, from the position close to the stirring shaft to the position close to the reactor wall, the paddle interlayer sieve plate (9) has the shape of a side surface of a rotating body, and the upper bottom surface of the rotating body is larger than the lower bottom surface of the rotating body.
8. The production device according to claim 7, characterized in that: For any two points A and B on the side of the rotating body, when the distance between point A and the stirring axis is greater than the distance between point B and the stirring axis, the position of point A is higher than the position of point B.
9. The production device according to claim 8, characterized in that: The side surface of the rotating body is a truncated cone side surface or a spherical crown with a central hole.
10. The production device according to claim 7, characterized in that: The position of the sieve plate (9) between the blade layers close to the reactor wall is provided with an upward cylindrical extension.