Sugar juice cleaning system
By connecting lime kiln gas with kiln gas scrubber and molecular sieve dryer in the sugar juice purification system, carbon dioxide gas is purified for sugar juice purification process, and lime milk is prepared, the problem of lime consumption and carbon dioxide gas procurement is solved, and cost reduction and efficiency improvement are achieved.
Patent Information
- Application Number
- CN202422240473.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-09-12
AI Technical Summary
In the existing sugar juice purification process, lime consumes a lot, and carbon dioxide gas is required to purchase for carbon saturation process, resulting in an increase in sugar production costs.
A sugar juice purification system is designed. Through devices such as lime kiln, kiln gas scrubber, molecular sieve dryer, etc., the gas outlet of the lime kiln is connected to the kiln gas scrubber and molecular sieve dryer in sequence, purifying the dry kiln gas to obtain pure carbon dioxide gas, and using it for the one-carbon saturation and two-carbon saturation process of the sugar juice purification. At the same time, a batching barrel is set up to prepare lime milk, and a horizontal pipe sulfur drifter is used to reduce the color value and viscosity of the sugar juice.
The resource utilization of carbon dioxide is achieved, production costs are reduced, production efficiency is improved, and the color value and viscosity of sugar juice are effectively reduced.
Smart Images
Figure CN223280857U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sugar juice processing, in particular to a sugar juice purification system. Background Art
[0002] The exudate extracted from sugar beets during sugar production, commonly known as syrup, contains various non-sugars and cannot be directly concentrated or boiled into sugar. Therefore, the exudate undergoes a series of purification steps. Purification aims to remove suspended particles, neutralize the acidity, remove colorants, and minimize non-sugars, particularly surfactants and colloids. Purification improves the purity of the juice, reduces viscosity and color, and prepares high-quality raw syrup for sugar boiling (crystallization). Beet sugar refineries typically produce high-quality white sugar directly from sugar beets, typically using the carbonation process. The exudate is pre-limed to neutralize acidity and maximize the coagulation and precipitation of non-sugars. It is then heated and an excess of lime milk is added. However, the carbonation purification process consumes a large amount of lime. Furthermore, the procurement of gases such as carbon dioxide for the carbonation process increases sugar production costs. Therefore, a method is needed to simultaneously prepare lime and separate the carbon dioxide for direct use in the carbonation process, thereby reducing costs and increasing efficiency. Utility Model Content
[0003] In response to the above technical problems, the utility model provides a method for separating carbon dioxide from lime during lime preparation, which can be directly used in the carbon saturation process to achieve the purpose of reducing costs and increasing efficiency; and to solve the problem of high costs in the existing sugar juice purification section.
[0004] In order to solve the above technical problems, the utility model describes a sugar juice purification system, including a lime kiln, a batching barrel, a kiln gas washing tower, a progressive pre-ash trough, and a main ash barrel. The gas outlet of the lime kiln is connected to the air inlet end of the kiln gas washing tower through a pipeline, and the air outlet end of the kiln gas washing tower is connected to the inlet end of the gas storage tank through a pipeline. The discharge port of the lime kiln is connected to the inlet end of the batching barrel through a pipeline, and the discharge port of the batching barrel is respectively connected to the progressive pre-ash trough and the main ash barrel through pipelines. The discharge end of the progressive pre-ash trough is connected to the main ash barrel through a pipeline, and the discharge end of the main ash barrel is connected to the intermediate tank through a pipeline. The gas storage tank is connected to the main ash barrel and the intermediate tank through pipelines, and the intermediate tank is connected to the horizontal pipeline sulfur bleaching device through a pipeline.
[0005] Furthermore, the discharge port of the lime kiln is connected to the input end of the material temporary storage box through a pipeline, and the output end of the material temporary storage box is connected to the input end of the batching barrel through a pipeline.
[0006] Furthermore, the gas outlet end of the kiln gas washing tower is connected to the input end of the molecular sieve dryer through a pipeline, and the output end of the molecular sieve dryer is connected to the inlet end of the gas storage tank.
[0007] Furthermore, the output end of the main ash bucket is connected to the input end of the first-level filter through a pipe, the output end of the first-level filter is connected to the input end of the intermediate tank through a pipe, the output end of the intermediate tank is connected to the input end of the second-level filter through a pipe, and the output end of the second-level filter is connected to the input end of the horizontal pipeline sulfur bleaching device through a pipe.
[0008] Furthermore, the output end of the horizontal pipeline sulfur bleaching device is connected to the input end of the bag filter through a pipeline.
[0009] Furthermore, the batching barrel includes a barrel body, the feed port at the upper end of the barrel body is connected to the output end of the material temporary storage box through a pipe, and the discharge port at the lower end is connected to the progressive pre-ash trough and the main ash barrel through pipes respectively, the upper part of one side of the barrel body is connected to a water inlet pipe, and an agitator is connected to the inside for rotation, the upper end of the agitator passes through the barrel body and is fixedly connected to the output shaft of the batching motor, and the lower end of the barrel body is fixedly connected to the support leg through a weighing module.
[0010] Furthermore, the kiln gas washing tower includes a tower body, the air outlet at the upper end of the tower body is connected to the input end of the molecular sieve dryer through a pipe, and a sewage outlet is opened at the lower end. A sieve plate is fixedly connected to the middle of the tower body, a nozzle is fixedly connected above the sieve plate, and a downward nozzle is fixedly connected to the nozzle. An air inlet pipe is connected to one side of the tower body, and the air inlet pipe is connected to the gas outlet of the lime kiln through a pipe. The air inlet pipe is located below the sieve plate, and an overflow trough is fixedly connected to the corresponding position of the sieve plate on one side of the tower body.
[0011] Compared with the prior art, the utility model has the following advantages:
[0012] The utility model connects the gas outlet of the lime kiln with the kiln gas washing tower, the molecular sieve dryer and the gas outlet pipe in sequence, thereby purifying and drying the kiln gas to obtain relatively pure carbon dioxide gas, and the carbon dioxide gas is used in the one-carbon saturation and two-carbon saturation processes of sugar juice purification, thereby realizing effective utilization of resources and reducing production costs; by connecting the discharge port of the lime kiln with the material temporary storage box and providing a batching barrel connected to the material temporary storage box, lime milk can be prepared, which is convenient for direct use in the sugar juice purification section and improves production efficiency; by providing a horizontal pipeline sulfur bleaching device, sugar juice can be sulfur bleached, thereby effectively reducing the color value and viscosity of the sugar juice. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic structural diagram of the utility model.
[0014] Figure 2 This is a schematic diagram of the ingredient barrel structure.
[0015] Figure 3 This is a schematic diagram of the kiln gas washing tower structure.
[0016] In the figure: 1. Lime kiln, 2. Material temporary storage box, 3. Batching barrel, 301. Barrel body, 302. Weighing module, 303. Agitator, 304. Batching motor, 305. Support legs, 4. Kiln gas washing tower, 401. Tower body, 402. Sieve plate, 403. Air inlet pipe, 404. Air outlet, 405. Nozzle, 406. Overflow tank, 5. Molecular sieve dryer, 6. Gas storage tank, 7. Progressive pre-ash tank, 8. Main ash barrel, 9. Primary filter, 10. Intermediate tank, 11. Secondary filter, 12. Horizontal pipeline sulfur bleaching device, 13. Bag filter. DETAILED DESCRIPTION
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] like Figure 1 、 2 3 shows a sugar juice purification system, comprising a lime kiln 1, a batching barrel 3, a kiln gas washing tower 4, a progressive pre-ash tank 7, and a main ash tank 8. The gas outlet of the lime kiln 1 is connected to the air inlet of the kiln gas washing tower 4 through a pipeline, the air outlet of the kiln gas washing tower 4 is connected to the inlet of the gas storage tank 6 through a pipeline, the discharge port of the lime kiln 1 is connected to the inlet of the batching barrel 3 through a pipeline, the discharge port of the batching barrel 3 is connected to the progressive pre-ash tank 7 and the main ash tank 8 through pipelines, the discharge end of the progressive pre-ash tank 7 is connected to the main ash tank 8 through a pipeline, the discharge end of the main ash tank 8 is connected to the intermediate tank 10 through a pipeline, the gas storage tank 6 is connected to the main ash tank 8 and the intermediate tank 10 through pipelines, and in order to reduce the color value and viscosity of the sugar juice, the intermediate tank 10 is connected to a horizontal pipeline sulfur bleaching device 12 through a pipeline. It should be noted that, in this embodiment, the lime kiln 1, the progressive pre-ash tank 7, the main ash bucket 8, the gas storage tank 6, the intermediate tank 10, and the horizontal pipeline sulfur bleaching device 12 are all existing devices, so their specific structures will not be described in detail herein.
[0019] In order to automatically weigh lime and prepare lime milk, the batching barrel 3 includes a barrel body 301. The upper feed port of the barrel body 301 is connected to the output end of the material temporary storage box 2 through a pipe, and the lower discharge port is connected to the progressive pre-ash trough 7 and the main ash barrel 8 through pipes. The upper part of the barrel body 301 is connected to a water inlet pipe and a stirrer 303 is rotatably connected inside. The upper end of the stirrer 303 passes through the barrel body 301 and is fixedly connected to the output shaft of the batching motor 304. The lower end of the barrel body 301 is fixedly connected to the support leg 305 through a weighing module 302. It should be noted that in this embodiment, to ensure the weighing effect, flexible connections are used between the water inlet pipe and the barrel body 301, between the pipe of the lower discharge port and the barrel body 301, and between the pipe of the upper feed port and the barrel body 301. In addition, a star-shaped discharge valve is connected to the pipe between the upper feed port and the output end of the material temporary storage box 2.
[0020] In order to fully wash the kiln gas generated by the lime kiln 1, remove some impurities therein, and make full use of the carbon dioxide in the kiln gas, the kiln gas washing tower 4 includes a tower body 401, an air outlet 404 at the upper end of the tower body 401 is connected to the input end of the molecular sieve dryer 5 through a pipeline, and a sewage outlet is opened at the lower end. A sieve plate 402 is fixedly connected to the middle of the tower body 401, a nozzle 405 is fixedly connected above the sieve plate 402, and a downward nozzle is fixedly connected to the nozzle 405. An air inlet pipe 403 is connected to one side of the tower body 401, and the air inlet pipe 403 is connected to the gas outlet of the lime kiln 1 through a pipeline. The air inlet pipe 403 is located below the sieve plate 402, and an overflow trough 406 is fixedly connected to the corresponding position of the sieve plate 402 on one side of the tower body 401. The lower end of the overflow trough 406 is connected to an overflow pipe, and the overflow pipe is connected to the collection box.
[0021] In order to achieve temporary storage of lime, the produced lime is quantitatively fed into the batching barrel 3 for preparation of lime milk. The discharge port of the lime kiln 1 is connected to the input end of the material temporary storage box 2 through a pipeline, and the output end of the material temporary storage box 2 is connected to the input end of the batching barrel 3 through a pipeline.
[0022] In order to remove moisture from the scrubbed gas and ensure better gas utilization, the gas outlet of the kiln gas scrubber 4 is connected to the input of the molecular sieve dryer 5 via a pipeline, and the output of the molecular sieve dryer 5 is connected to the inlet of the gas storage tank 6. It should be noted that the molecular sieve dryer 5 is an existing device, and its specific structure will not be described in detail in this embodiment.
[0023] To filter the large amount of sediment produced in the sugar juice after carbon saturation (one carbon saturation) and carbon saturation (two carbon saturations), the output end of the main ash bucket 8 is connected to the input end of the primary filter 9 via a pipeline. The output end of the primary filter 9 is connected to the input end of the intermediate tank 10 via a pipeline. The output end of the intermediate tank 10 is connected to the input end of the secondary filter 11 via a pipeline. The output end of the secondary filter 11 is connected to the input end of the horizontal pipeline sulfur bleaching device 12 via a pipeline. It should be noted that in this embodiment, both the primary filter 9 and the secondary filter 11 are pressure filters to filter the large amount of sediment produced in the sugar juice after carbon saturation. Since both the primary filter 9 and the secondary filter 11 are existing devices, their specific structures will not be described in detail in this embodiment.
[0024] To separate fine turbid matter from the bleached sugar juice, a bag filter 13 is used to filter the bleached juice. The output end of the horizontal pipeline bleaching device 12 is connected to the input end of the bag filter 13 via a pipe. It should be noted that the bag filter 13 is a conventional device, and its specific structure will not be described in detail in this embodiment. The horizontal pipeline bleaching device 12 utilizes a centrifugal pump to force the sugar juice through an annular nozzle at a constant pressure, generating a high-speed jet. The turbulent flow generated by the high-speed jet of sugar juice promotes rapid and thorough mixing of the gas and liquid phases, significantly shortening the bleaching time and reducing sugar degradation.
[0025] It should be noted that, on each pipeline in this embodiment, valves, delivery pumps or booster pumps and other devices that are conventionally required can be set up by themselves. For pipelines between two devices with a high head difference, a delivery pump may not be installed. The selection can be made according to the actual installation situation of the system. Therefore, this article will not go into too much detail about the installation of valves and delivery pumps on each pipeline in the system.
[0026] The working process of this embodiment is as follows:
[0027] During the sugar juice purification process, limestone is first fed into the lime kiln 1 from the top feed port for calcination, and the produced lime is discharged from the bottom discharge port and enters the material temporary storage box 2. The produced kiln gas enters the kiln gas washing tower 4 from the upper gas outlet and the pipeline, and the kiln gas enters the tower body 1 from the air inlet pipe 403 and then moves upward. The nozzle 405 simultaneously distributes water to wash the kiln gas. The clean gas after washing enters the molecular sieve dryer 5 for drying and then enters the gas storage tank 6; the valve at the lower end of the material temporary storage box 2 is started to allow the lime to enter the barrel 301, and the weighing module 302 weighs the lime. Then, the water pipe is opened to feed water according to the ratio, the weighing module 302 weighs the weight of the newly added water, and the batching motor 304 is started to drive the stirrer 303 to stir to prepare lime milk. After the sugar juice enters the purification section, It is passed into the progressive pre-ash tank 7, and then the lime milk is passed into the progressive pre-ash tank 7. The pre-ash juice after pre-ashing enters the main ash barrel 8, and a sufficient amount of lime milk is passed into the main ash barrel 8 to carry out the main ash process to form main ash juice. Then the carbon dioxide gas in the gas storage tank 6 is passed into the main ash barrel 8 for one-carbon saturation, and the liquid after one-carbon saturation is passed into the primary filter 9 for filtration. The filtered clear juice is passed into the intermediate tank 10, and then the carbon dioxide gas in the gas storage tank 6 is passed into the intermediate tank 10 for two-carbon saturation, and the liquid after two-carbon saturation is passed into the secondary filter 11 for filtration. The filtered two-clear juice is passed into the horizontal pipeline sulfur bleaching device 12, and sulfur dioxide gas is passed into the horizontal pipeline sulfur bleaching device 12 for sulfur bleaching. The sugar juice after sulfur bleaching is passed into the bag filter 13 for filtration, and the purification section is completed.
Claims
1. A sugar juice purification system, characterized by: The invention comprises a lime kiln (1), a batching barrel (3), a kiln gas washing tower (4), a progressive pre-ash trough (7), and a main ash trough (8); the gas outlet of the lime kiln (1) is connected to the air inlet end of the kiln gas washing tower (4) through a pipeline; the air outlet end of the kiln gas washing tower (4) is connected to the inlet end of a gas storage tank (6) through a pipeline; the discharge port of the lime kiln (1) is connected to the inlet end of the batching barrel (3) through a pipeline; the discharge port of the batching barrel (3) is connected to the progressive pre-ash trough (7) and the main ash trough (8) through pipelines; the discharge end of the progressive pre-ash trough (7) is connected to the main ash trough (8) through a pipeline; the discharge end of the main ash trough (8) is connected to an intermediate tank (10) through a pipeline; the gas storage tank (6) is connected to the main ash trough (8) and the intermediate tank (10) through pipelines; and the intermediate tank (10) is connected to a horizontal pipeline sulfur bleaching device (12) through a pipeline.
2. The sugar juice purification system according to claim 1, characterized in that: The discharge port of the lime kiln (1) is connected to the input end of the material temporary storage box (2) through a pipeline, and the output end of the material temporary storage box (2) is connected to the input end of the batching barrel (3) through a pipeline.
3. The sugar juice purification system according to claim 1, characterized in that: The gas outlet end of the kiln gas washing tower (4) is connected to the input end of the molecular sieve dryer (5) through a pipeline, and the output end of the molecular sieve dryer (5) is connected to the inlet end of the gas storage tank (6).
4. The sugar juice purification system according to claim 1, characterized in that: The output end of the main ash bucket (8) is connected to the input end of the primary filter (9) through a pipeline, the output end of the primary filter (9) is connected to the input end of the intermediate tank (10) through a pipeline, the output end of the intermediate tank (10) is connected to the input end of the secondary filter (11) through a pipeline, and the output end of the secondary filter (11) is connected to the input end of the horizontal pipeline sulfur bleaching device (12) through a pipeline.
5. The sugar juice purification system according to claim 4, characterized in that: The output end of the horizontal pipeline sulfur bleaching device (12) is connected to the input end of the bag filter (13) through a pipeline.
6. The sugar juice purification system according to claim 2, characterized in that: The batching barrel (3) comprises a barrel body (301), wherein the upper end feed port of the barrel body (301) is connected to the output end of the material temporary storage box (2) through a pipeline, and the lower end discharge port is respectively connected to the progressive pre-ash trough (7) and the main ash barrel (8) through pipelines. The upper part of one side of the barrel body (301) is connected to a water inlet pipe, and an agitator (303) is rotatably connected inside. The upper end of the agitator (303) passes through the barrel body (301) and is fixedly connected to the output shaft of the batching motor (304). The lower end of the barrel body (301) is fixedly connected to the support leg (305) through a weighing module (302).
7. The sugar juice purification system according to claim 3, characterized in that: The kiln gas washing tower (4) includes a tower body (401), an air outlet (404) at the upper end of the tower body (401) is connected to the input end of the molecular sieve dryer (5) through a pipeline, and a sewage outlet is opened at the lower end. A sieve plate (402) is fixedly connected to the middle of the tower body (401), a nozzle (405) is fixedly connected above the sieve plate (402), and a downward nozzle is fixedly connected to the nozzle (405). An air inlet pipe (403) is connected to one side of the tower body (401), and the air inlet pipe (403) is connected to the gas outlet of the lime kiln (1) through a pipeline. The air inlet pipe (403) is located below the sieve plate (402). An overflow trough (406) is fixedly connected to a position corresponding to the sieve plate (402) on one side of the tower body (401).