Rice syrup cooling, crystallizing and drying device

Abstract

The utility model discloses a rice syrup cooling, crystallizing and drying device which is characterized in that a syrup feeding pipe is connected with the top of a vertical cooling crystallizer, a plurality of groups of cooling coils are arranged in an inner cavity of the crystallizer, and a bottom outlet is connected with a top circulating port of the vertical cooling crystallizer through a crystallizer circulating pump and a circulating pipe; the outlet of the high-position thickening tank is connected with a centrifugal machine, the solid-phase outlet of the centrifugal machine is connected with a horizontal crystal sugar temporary storage machine, and the outlet of the horizontal crystal sugar temporary storage machine is connected with a feeding screw conveyor; an outlet of the feeding spiral conveyor is connected with a material inlet of the airflow dryer through the airflow feeder, a hot air inlet in the lower end of the airflow dryer is connected with an outlet of the hot air conveying pipeline, and an outlet in the upper end of the airflow dryer is connected with an inlet of the cyclone separator. And a discharge port of the cyclone separator is connected with a crystalline sugar cooling and packaging section through an air seal machine. The device is high in production efficiency, small in occupied area, free of material sticking and arching and capable of achieving stable and continuous production.

Description

Technical Field

[0001] The utility model relates to a rice syrup processing system, in particular to a rice syrup cooling, crystallizing and drying device, belonging to the technical field of broken rice processing equipment. Background Art

[0002] In the process of rice processing, about 20% rice husks, 15% broken rice and 10% rice bran are produced as by-products. These by-products are rich in protein, fat, starch, etc. Normally, we use broken rice and rice bran as feed and rice husk as fuel, which not only wastes resources but also has a certain impact on the environment.

[0003] Broken rice is of poor quality compared to rice, with more impurities, high ash content and relatively cheap price. However, broken rice also has its advantages. It has a higher protein content than rice and contains high-quality starch. The protein content of broken rice can reach about 10.5%, while the protein content of rice is about 8.8%. The protein content of broken rice is about 2 percentage points higher than that of normal rice. Using broken rice to produce food-grade rice protein can increase the protein yield, turn waste into treasure, and increase the profits of production companies. Starch can be deeply processed to produce crystalline sugar. In the production process of crystalline sugar, the rice slurry must first be liquefied, and the separated syrup is refined and cooled and crystallized.

[0004] The Chinese invention patent with announcement number CN101555508B discloses a method for producing crystalline glucose from rice. The crystalline glucose is obtained by taking rice as raw material through soaking and grinding, slurry adjustment, liquefaction and slag removal, saccharification, primary neutralization and filtration, secondary neutralization and filtration, ion exchange, concentration and refining, crystallization and drying steps.

[0005] However, the above technical solutions and the prior art have the following defects:

[0006] 1. The crystallization time of producing monohydrate crystalline sugar is relatively long, which normally takes about 60 hours. It requires multiple horizontal crystallizers and batch cooling crystallization. According to the calculation of 200TPD crystalline sugar, 42 30 cubic horizontal crystallizers are required. Batch production, large floor space, high construction cost, and cannot be produced continuously, and the labor force of workers is large.

[0007] 2. The crystallized sugar paste is separated from the mother liquor by an overhead centrifuge. Since the separated crystallized sugar has high viscosity, it is easy to stick to the material, causing the crystal discharge buffer bin at the centrifuge outlet to agglomerate and bridge, which often causes blockage, affecting the feeding of the subsequent dryer and resulting in inability to produce continuously. Utility Model Content

[0008] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0009] In view of the above problems and / or the problems existing in the prior art, the present utility model is proposed.

[0010] The utility model aims to overcome the problems existing in the prior art and provide a rice syrup cooling crystallization drying device, which has high production efficiency, small footprint, no sticking of materials and arching, and can achieve stable and continuous production.

[0011] In order to solve the above technical problems, the utility model provides a rice syrup cooling crystallization drying device, comprising a syrup feeding pipe, which is connected to the top inlet of a vertical cooling crystallizer through a high-viscosity rotor pump, the inner cavity of the vertical cooling crystallizer is provided with multiple groups of cooling coils along the height direction, the bottom outlet of the vertical cooling crystallizer is connected to a circulation valve and a discharge valve, the outlet of the circulation valve is connected to the top circulation port of the vertical cooling crystallizer through a crystallizer circulation pump and a circulation pipe; the outlet of the discharge valve is connected to the inlet of a high-position thickening tank through a sugar paste delivery pump, and the high-position thickening tank is connected to the outlet of the discharge valve. The outlet of the thickening tank is connected to the inlet of the centrifuge, the solid phase outlet of the centrifuge is connected to the inlet of the horizontal crystal sugar temporary storage machine, the outlet of the horizontal crystal sugar temporary storage machine is connected to the inlet of the feeding screw conveyor, the outlet of the feeding screw conveyor is connected to the inlet of the air flow feeder, the outlet of the air flow feeder is connected to the material inlet of the air flow dryer, the lower hot air inlet of the air flow dryer is connected to the outlet of the hot air delivery pipeline, the upper outlet of the air flow dryer is connected to the inlet of the cyclone separator, and the discharge port of the cyclone separator is connected to the crystal sugar cooling and packaging section through an air shutoff.

[0012] As an improvement of the utility model, the mother liquid outlet of the centrifuge is connected to the inlet of the massecuite mother liquid tank, and the outlet of the massecuite mother liquid tank is connected to the hydrogenation section through a massecuite mother liquid delivery pump.

[0013] As a further improvement of the present invention, the outlet of each cooling coil of the vertical cooling crystallizer is respectively connected to the inlet of the corresponding partitioned cooling water tank, the outlet of each partitioned cooling water tank is respectively connected to the hot side inlet of the corresponding plate heat exchanger, the hot side outlet of each plate heat exchanger is respectively connected to the inlet of the corresponding partitioned cooling water pump, and the outlet of each partitioned cooling water pump is respectively connected to the inlet of the corresponding cooling coil.

[0014] As a further improvement of the utility model, the cold side inlet of each plate heat exchanger is respectively connected to the cooling water supply main pipe, and the cold side outlet of each plate heat exchanger is respectively connected to the cooling water return main pipe.

[0015] As a further improvement of the present invention, the horizontal crystal sugar temporary storage machine includes a horizontal cylinder, the lower ends of the two vertical walls of the horizontal cylinder are connected by a semicircular cylinder bottom, the tops of the two vertical walls are covered with a top plate, the inner cavity of the horizontal cylinder is provided with a rotor shaft, a helical ribbon stirring blade is wound on the rotor shaft, the outer edge of the helical ribbon stirring blade matches the semicircular cylinder bottom, the helical ribbon stirring blade and the rotor shaft are fixedly connected by a plurality of radial support rods, a main feed port is provided above the feed end of the top plate, and a temporary storage machine discharge port is provided below the discharge end of the semicircular cylinder bottom.

[0016] As a further improvement of the utility model, the air outlet of the air filter is connected to the inlet of the blower, the outlet of the blower is connected to the air inlet of the fin heat exchanger, and the air outlet of the fin heat exchanger is connected to the inlet of the hot air delivery duct.

[0017] As a further improvement of the utility model, the steam inlet of the fin heat exchanger is connected to the steam pipe through a steam regulating valve, a hot air temperature sensor is installed at the air outlet of the fin heat exchanger, the opening of the steam regulating valve is controlled by the hot air temperature measured by the hot air temperature sensor, and the condensate outlet of the fin heat exchanger is connected to the condensate pipe.

[0018] Compared with the prior art, the utility model has achieved the following beneficial effects: 1. The vertical cooling crystallizer is used to cool accurately in different zones. According to the calculation of 200TPD crystal sugar production capacity, only six 178 cubic vertical cooling crystallizers are needed, which occupies a small area, has low civil construction cost, cools in different zones along the elevation, and continuously crystallizes at the same time, and the labor intensity of workers is low;

[0019] 2. A horizontal crystal sugar temporary storage machine is used, which contains a spiral ribbon agitator. The relative movement of the agitator blades and the inner wall ensures that the crystal sugar cannot form an arch in the buffer bin. In addition, the spiral ribbon blades have a hollow central circular hole while stirring, which can allow the crystal sugar to have a movement difference at different positions. In this way, the crystal sugar can be dispersed while stirring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. The drawings are only provided for reference and explanation, not for limiting the present utility model. Among them:

[0021] Figure 1 This is a flow chart of the rice syrup cooling crystallization drying device of the utility model;

[0022] Figure 2 This is a front view of the horizontal crystal sugar temporary storage machine in the utility model;

[0023] Figure 3 for Figure 2 A top view of

[0024] Figure 4 for Figure 2 Left view of;

[0025] Figure 5 for Figure 2 Stereoscopic image of

[0026] In the figure: syrup feed pipe 100; high viscosity rotor pump 200; cooling water supply main pipe 300; cooling water return main pipe 400;

[0027] Vertical cooling crystallizer 501; zone temperature sensor TT501; zone cooling water tank 502; zone cooling water pump 503; plate heat exchanger 504; crystallizer circulation pump 505; sugar paste delivery pump 506; high-level thickening tank 507; thickening tank material level sensor LT507; centrifuge 508; horizontal crystal sugar temporary storage machine 509; main feed inlet 509a; auxiliary feed inlet 509b; temporary storage machine discharge port 509c; rotor shaft 509d; screw ribbon agitator Mixing blade 509e; radial support rod 509f; belt drive reducer 509g; feeding screw conveyor 510; air flow feeder 511; air filter 512; blower 513; fin heat exchanger 514; steam regulating valve TC514; hot air temperature sensor TT514; air flow dryer 515; tail gas temperature sensor TT516; cyclone separator 516; air shutoff 517; sugar massecuite mother liquid tank 518; sugar massecuite mother liquid delivery pump 519;

[0028] Hydrogenation section 600; crystal sugar cooling and packaging section 700; steam pipeline 800; condensate pipeline 900. DETAILED DESCRIPTION

[0029] In the following description of the utility model, the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not mean that the device must have a specific direction.

[0030] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific figures. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] like Figure 1 As shown, the rice syrup cooling crystallization and drying device of the utility model includes a vertical cooling crystallizer 501, a crystallizer circulation pump 505, a sugar paste delivery pump 506, a high-position thickening tank 507, a centrifuge 508, a horizontal crystal sugar temporary storage machine 509, a feeding screw conveyor 510, an air flow feeder 511, an air filter 512, a blower 513, a fin heat exchanger 514, an air flow dryer 515, a cyclone separator 516, an air shutoff 517, a sugar paste mother liquor tank 518 and a sugar paste mother liquor delivery pump 519.

[0033] After evaporation and concentration, the syrup is fed into the upper part of the vertical cooling crystallizer 501 through the syrup feeding pipe 100 and the high viscosity rotor pump 200, and the temperature is reduced in different zones during the flow from top to bottom. The inner cavity of the vertical cooling crystallizer 501 is evenly provided with multiple cooling units along the height direction, and each cooling unit is respectively provided with a cooling coil, a zoned cooling water tank 502, a zoned cooling water pump 503 and a plate heat exchanger 504, and the cold side inlet of each plate heat exchanger 504 is respectively connected to the cooling water supply main pipe 300, and the cold side outlet of each plate heat exchanger 504 is respectively connected to the cooling water return main pipe 400.

[0034] The outlet of each partitioned cooling water tank 502 is respectively connected to the hot side inlet of the corresponding plate heat exchanger 504, the hot side outlet of each plate heat exchanger 504 is respectively connected to the inlet of the corresponding partitioned cooling water pump 503, the outlet of each partitioned cooling water pump 503 is respectively connected to the inlet of the corresponding cooling coil, and the outlet of each cooling coil is respectively connected to the inlet of the corresponding partitioned cooling water tank 502.

[0035] Each cooling zone is provided with a zone temperature sensor TT501, and the syrup temperature value of each section is controlled by circulating coolant, and the circulating coolant can be softened water. The speed of the zone cooling water pump 503 in each section is linked to the syrup temperature measured by the corresponding zone temperature sensor TT501. When the syrup temperature is higher than the set value, the frequency and speed of the zone cooling water pump 503 are automatically increased to increase the flow into the cooling coil; when the syrup temperature is lower than the set value, the frequency and speed of the zone cooling water pump 503 are automatically reduced to reduce the flow into the cooling coil.

[0036] After the circulating coolant indirectly exchanges heat with the syrup in the cooling coil, the syrup is cooled, and the temperature of the circulating coolant increases, and enters the partitioned cooling water tank 502, and then enters the hot side of the plate heat exchanger 504, and exchanges heat with the circulating cooling water on the cold side to cool down.

[0037] The bottom outlet of the vertical cooling crystallizer 501 is connected to the inlet of the crystallizer circulation pump 505 through a circulation valve, and the outlet of the crystallizer circulation pump 505 is connected to the top circulation inlet of the vertical cooling crystallizer 501 through a crystallizer circulation pipe. If the crystallization effect of the sugar mass after cooling and crystallization does not meet the requirements, it will be circulated back to the top of the crystallization tank through the crystallizer circulation pump 505.

[0038] The bottom outlet of the vertical cooling crystallizer 501 is connected to the inlet of the sugar paste delivery pump 506 through the discharge valve, and the outlet of the sugar paste delivery pump 506 is connected to the inlet of the high-level thickening tank. The sugar paste that meets the crystallization requirements enters the sugar paste delivery pump 506 through the discharge valve, and is delivered to the high-level thickening tank by the sugar paste delivery pump 506. The high-level thickening tank is equipped with a thickening tank material level sensor LT507, and the rotation speed of the sugar paste delivery pump 506 is automatically linked with the material level measured by the thickening tank material level sensor LT507.

[0039] The outlet of the high-level thickening tank is connected to the inlet of the centrifuge 508, the mother liquor outlet of the centrifuge 508 is connected to the inlet of the massecuite mother liquor tank 518, the outlet of the massecuite mother liquor tank 518 is connected to the inlet of the massecuite mother liquor delivery pump 519, and the outlet of the massecuite mother liquor delivery pump 519 is connected to the hydrogenation section 600. The massecuite discharged from the thickening tank 506 enters the centrifuge 508 for separation, and the separated mother liquor enters the massecuite mother liquor tank 518 and is delivered to the hydrogenation section 600 through the massecuite mother liquor delivery pump 519. The monohydrate crystalline sugar separated by the centrifuge 508 enters the horizontal crystalline sugar temporary storage machine 509.

[0040] A feeding screw conveyor 510 is provided below the outlet of the horizontal crystal sugar temporary storage machine 509. The monohydrate crystal sugar discharged from the feeding screw conveyor 510 is fed into the air flow dryer 515 through the air flow feeder 511. The flow rate of the monohydrate crystal sugar entering the air flow dryer 515 is controlled by the frequency conversion of the feeding screw conveyor 510.

[0041] The air flow dryer 515 is equipped with an air filter 512 , a blower 513 , a fin heat exchanger 514 , a cyclone separator 516 and an air shutoff 517 .

[0042] The air outlet of the air filter 512 is connected to the inlet of the blower 513, the outlet of the blower 513 is connected to the air inlet of the fin heat exchanger 514, the air outlet of the fin heat exchanger 514 is connected to the inlet of the hot air delivery pipe, and the outlet of the hot air delivery pipe is connected to the hot air inlet at the lower end of the airflow dryer 515. The fresh air filtered by the air filter 512 is sent to the cold side of the fin heat exchanger 514 by the blower 513, and after heat exchange with the steam on the hot side to increase the temperature, it enters the lower end inlet of the airflow dryer 515 through the hot air delivery pipe, and blows the material fed by the airflow feeder 511 into the airflow dryer 515.

[0043] The steam inlet of the fin heat exchanger 514 is connected to the steam pipe 800 through the steam regulating valve TC514, and the condensate outlet of the fin heat exchanger 514 is connected to the condensate pipe 900. A hot air temperature sensor TT514 is installed at the air outlet of the fin heat exchanger 514, and the opening of the steam regulating valve TC514 is linked to the temperature measured by the hot air temperature sensor TT514 to control the temperature of the hot air.

[0044] The crystallized sugar entering the air flow dryer 515 through the air flow feeder 511 is mixed with the hot air for heat exchange, and the moisture in the crystallized sugar is taken away by the hot air, thereby achieving the purpose of drying.

[0045] The dried crystallized sugar enters the cyclone separator 516 for centrifugal separation. The tail gas outlet at the top of the cyclone separator 516 is equipped with a tail gas temperature sensor TT516. The motor frequency of the feeding screw conveyor 510 is linked to the tail gas temperature measured by the tail gas temperature sensor TT516.

[0046] When the temperature is higher than the set value, the speed of the feeding screw conveyor 510 is automatically increased to increase the feeding amount and production capacity. If the temperature is lower than the set value, the speed of the feeding screw conveyor 510 is automatically reduced to reduce the production capacity.

[0047] The monohydrate crystalline sugar that meets the moisture requirement of the finished product is discharged from the bottom of the cyclone separator 516, and discharged through the air lock 517 to the crystallized sugar cooling and packaging section 700.

[0048] like Figures 2 to 5 As shown, the horizontal crystal sugar temporary storage machine 509 includes a horizontal cylinder, the lower ends of the two vertical walls of the horizontal cylinder are connected through a semicircular cylinder bottom, the top of the two vertical walls is covered with a top plate, the inner cavity of the horizontal cylinder is provided with a rotor shaft 509d, a spiral ribbon stirring blade 509e is wound around the rotor shaft, the outer edge of the spiral ribbon stirring blade matches the semicircular cylinder bottom, and the spiral ribbon stirring blade 509e and the rotor shaft are connected to each other through a plurality of radial support rods 509f. A main feed port 509a is provided above the feed end of the top plate, an auxiliary feed port 509b is provided in the middle section of the top plate, and a temporary storage machine discharge port 509c is provided below the discharge end of the semicircular cylinder bottom.

[0049] The rotor shaft and the screw-belt stirring blade 509e are driven by the screw-belt drive reducer 509g through a chain. Under the stirring action of the screw-belt stirring blade 509e, the crystallized sugar will not form an arch during the temporary storage process. The screw-belt stirring blade 509e has a hollow structure. During the transportation to the temporary storage machine outlet 509c, there is always a certain movement difference between the periphery and the center, which plays a role in further breaking up the sugar.

[0050] The above description is only the preferred feasible embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model, but does not limit the scope of patent protection of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. In addition to the above embodiments, the utility model can also have other implementation modes without departing from the spirit and scope of the utility model. The utility model will also have various changes and improvements. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents. The technical features not described in the utility model can be achieved by or using existing technologies, which will not be repeated here.

Claims

1. A rice syrup cooling crystallization drying device, comprising a syrup feeding pipe (100), characterized in that: The syrup feed pipe (100) is connected to the top inlet of the vertical cooling crystallizer (501) through a high-viscosity rotor pump (200). The inner cavity of the vertical cooling crystallizer (501) is provided with a plurality of cooling coils along the height direction. The bottom outlet of the vertical cooling crystallizer (501) is connected to a circulation valve and a discharge valve. The outlet of the circulation valve is connected to the top circulation port of the vertical cooling crystallizer (501) through a crystallizer circulation pump (505) and a circulation pipe. The outlet of the discharge valve is connected to the inlet of a high-position thickening tank (507) through a sugar paste delivery pump (506). The outlet of the high-position thickening tank (507) is connected to the inlet of a centrifuge (508). The solid phase outlet is connected to the inlet of the horizontal crystal sugar temporary storage machine (509), the outlet of the horizontal crystal sugar temporary storage machine (509) is connected to the inlet of the feeding screw conveyor (510), the outlet of the feeding screw conveyor (510) is connected to the inlet of the air flow feeder (511), the outlet of the air flow feeder (511) is connected to the material inlet of the air flow dryer (515), the lower end hot air inlet of the air flow dryer (515) is connected to the outlet of the hot air delivery pipeline, the upper end outlet of the air flow dryer (515) is connected to the inlet of the cyclone separator (516), and the discharge port of the cyclone separator (516) is connected to the crystal sugar cooling and packaging section (700) through the air shut-off device (517).

2. The rice syrup cooling crystallization drying device according to claim 1, characterized in that: The mother liquid outlet of the centrifuge (508) is connected to the inlet of the massecuite mother liquid tank (518), and the outlet of the massecuite mother liquid tank (518) is connected to the hydrogenation section (600) via the massecuite mother liquid delivery pump (519).

3. The rice syrup cooling crystallization drying device according to claim 1, characterized in that: The outlets of the cooling coils of the vertical cooling crystallizer (501) are respectively connected to the inlets of the corresponding partitioned cooling water tanks (502), the outlets of the partitioned cooling water tanks (502) are respectively connected to the hot side inlets of the corresponding plate heat exchangers (504), the hot side outlets of the plate heat exchangers (504) are respectively connected to the inlets of the corresponding partitioned cooling water pumps (503), and the outlets of the partitioned cooling water pumps (503) are respectively connected to the inlets of the corresponding cooling coils.

4. The rice syrup cooling crystallization drying device according to claim 3, characterized in that: The cold side inlet of each plate heat exchanger (504) is respectively connected to the cooling water supply main pipe (300), and the cold side outlet of each plate heat exchanger (504) is respectively connected to the cooling water return main pipe (400).

5. The rice syrup cooling crystallization drying device according to claim 1, characterized in that: The horizontal crystal sugar temporary storage machine (509) comprises a horizontal cylinder, the lower ends of the two vertical walls of the horizontal cylinder are connected through a semicircular cylinder bottom, the tops of the two vertical walls are covered with a top plate, the inner cavity of the horizontal cylinder is provided with a rotor shaft (509d), a spiral ribbon stirring blade (509e) is wound around the rotor shaft, the outer edge of the spiral ribbon stirring blade matches the semicircular cylinder bottom, the spiral ribbon stirring blade (509e) and the rotor shaft are fixedly connected by a plurality of radial support rods (509f), a main feed port (509a) is provided above the feed end of the top plate, and a temporary storage machine discharge port (509c) is provided below the discharge end of the semicircular cylinder bottom.

6. The rice syrup cooling crystallization drying device according to claim 5, characterized in that: An auxiliary feed port (509b) is provided in the middle section of the top plate of the horizontal crystal sugar temporary storage machine (509).

7. The rice syrup cooling crystallization drying device according to any one of claims 1 to 5, characterized in that: The air outlet of the air filter (512) is connected to the inlet of the blower (513), the outlet of the blower (513) is connected to the air inlet of the fin heat exchanger (514), and the air outlet of the fin heat exchanger (514) is connected to the inlet of the hot air delivery duct.

8. The rice syrup cooling crystallization drying device according to claim 7, characterized in that: The steam inlet of the fin heat exchanger (514) is connected to the steam pipe (800) through a steam regulating valve (TC514); a hot air temperature sensor (TT514) is installed at the air outlet of the fin heat exchanger (514); the opening of the steam regulating valve (TC514) is controlled by the hot air temperature measured by the hot air temperature sensor (TT514); and the condensate outlet of the fin heat exchanger (514) is connected to the condensate pipe (900).

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