Clarification method and equipment for carbonation and sedimentation of filtered juice in raw sugar production process

Abstract

The invention discloses a clarification method and equipment for carbonation and sedimentation of filtered juice in a raw sugar production process. The clarification method comprises the following steps: step 1, filtering and separating: filtering and separating mud juice of a neutralized juice settler through a filter-cloth-free vacuum suction filter to obtain filtered juice; step 2, neutralization: adding phosphoric acid and lime milk into the filtered juice buffer tank, and stirring for neutralization; step 3, reaction: pumping the neutralized filtered juice in the filtered juice buffer tank into a carbonation tank through a neutralized juice pump to react with carbon dioxide gas to form carbonated juice; step 4, heating: heating in a filtered juice heater, and fully dispersing steam before the heated saturated juice enters a steam dispersing box for flocculating settling; and step 5, flocculating and settling: enabling the carbonated filtered juice to enter a filtered juice settler from the steam dispersing box, adding a flocculating agent into a pipeline, fully mixing the flocculating agent with the carbonated filtered juice, and enabling the mixture to enter the filtered juice settler for gravity settling. The invention also discloses clarification equipment for carbonated and settled filtered juice in the raw sugar production process.

Description

Technical Field

[0001] The invention relates to the technical field of sugarcane sugar production, and in particular to a clarification method and equipment for carbonation saturation and sedimentation of filtered juice in a raw sugar production process. Background Art

[0002] The raw sugar production process of sugarcane sugar production process uses sugarcane as raw material, and after squeezing and extracting juice, the raw sugar is obtained after the sugarcane juice is clarified by lime method, evaporated, crystallized, and separated from the honey. The lime method clarification process is to remove colloidal pigments, organic and inorganic non-sugars from the mixed juice obtained from squeezing through heating, ash addition, sedimentation, filtration and other processes to obtain a relatively pure juice with low turbidity and color that meets the process requirements. Similar to the sedimentation and filtration process of the sulfite clarification process, the sedimentation and filtration process of the lime method clarification process is to send the ash-neutralized and heated sugarcane juice into the settler for sedimentation and separation, the upper clear juice is discharged to the evaporation process, and the lower concentrated mud juice is discharged through the bottom mud juice pipe to the filtration process, so that the solid-liquid mixture is separated. The filtration process generally uses a clothless vacuum filter for filtration. The clear juice obtained after filtration is called filtered juice. Because the filtered juice of the clothless vacuum filter also contains a large amount of sediment, high turbidity and high color value, it will affect the quality and recovery of the products in the later process, so the filtered juice cannot directly enter the evaporation process. How to treat the filtered juice of the clothless vacuum filter through effective process measures to ensure the quality of the clear juice entering the evaporation process is a key issue faced in sugarcane sugar production. At present, the common practice of lime-based raw sugar production process for the filtered juice of the clothless vacuum filter is to reflux the mixed juice or the neutralized juice for reprocessing, and the filtered juice returns to the clarification process for recycling, which increases the consumption of auxiliary materials and energy consumption. At the same time, the circulation reflux causes the residence time of the filtered juice to be too long, resulting in serious loss of sugar conversion. In addition, the circulation reflux of the filtered juice increases the load of the neutralization juice settler, affecting the clarification efficiency and production capacity of the settler, and has an adverse effect on product quality and scouring recovery. Compared with the traditional sulfite sugar mills that separately settle the filtered juice from the vacuum filter without filter cloth, the lime-based raw sugar production process contains more mud and has a looser mud structure, which is generally more difficult to handle than the filtered juice from the sulfite production process. Therefore, there are few cases of separate clarification treatment of the filtered juice from the lime-based raw sugar production process in the industry. Summary of the invention

[0003] Based on this, the purpose of the present invention is to provide a clarification method and equipment for carbonation saturation and sedimentation of filtered juice in a raw sugar production process to solve the technical problems mentioned in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a clarification method of filtered juice by carbonation saturation and sedimentation in a raw sugar production process, comprising the following steps:

[0005] Step 1, filtering and separation: the mud juice in the neutralized juice settler is filtered and separated by a vacuum suction filter without filter cloth to obtain filter mud and filter juice. The filter mud is conveyed to the filter mud storage bucket through a mud conveyor belt for temporary storage, and then further processed. The filter juice is collected in a filter juice box;

[0006] Step 2, neutralization: pump the juice in the juice box into the juice buffer box through a juice pump, add phosphoric acid and lime milk into the juice buffer box and stir to neutralize, the neutralization pH value is 8.5-9.5;

[0007] Step 3, reaction: The neutralized filtered juice in the filtered juice buffer box is pumped to the saturation tank through a neutralizing juice pump. The filtered juice enters from the top of the saturation tank, and the carbon dioxide gas enters from the lower middle part of the saturation tank. The filtered juice and the carbon dioxide gas react in countercurrent contact in the saturation tank to become saturated juice. The saturated pH value is 8.0-8.5. The saturated juice is discharged from the outer ring groove outlet on the outer ring of the top of the saturation tank to the saturated juice buffer box and enters the next step;

[0008] Step 4, heating: the saturated juice in the saturated juice buffer tank is pumped to the filter juice heater for heating by the saturated juice pump, and the heated saturated juice enters the steam release box for full steam release before flocculation and sedimentation;

[0009] Step five, flocculation and sedimentation: the saturated filter juice after heating and steam dissipation enters the filter juice settler from the bottom of the steam dissipation box through a pipe, flocculant is added to the pipeline and fully mixed with the saturated filter juice, and then enters the filter juice settler for gravity sedimentation, the filtered juice overflows from the top of the filter juice settler and is led to the filtered juice curved screen, mixed with the clarified juice in the clear juice box and enters the next process of evaporation and concentration, the concentrated mud juice is discharged from the bottom of the filter juice settler, flows into the mud juice stirring tank by gravity using the height difference, and adds bagasse bran to stir and mix evenly, and then returns to the clothless vacuum suction filter for filtration.

[0010] Furthermore, the moisture content of the filter mud in the step 1 is 70%, the brix of the filter juice is 16°Bx, and the purity is 76Ap.

[0011] Furthermore, in the step 2, the concentration of the phosphoric acid is 85% industrial phosphoric acid, and the ratio of the phosphoric acid dosage to the filtrate is 150-200 ppm, and the concentration of the lime milk is 12° Be.

[0012] Furthermore, the source of carbon dioxide in step three is boiler flue gas, the flue gas extraction equipment is a water ring vacuum pump and its associated pipelines, the flue gas is cleaned by dust removal and washing, the volume concentration of carbon dioxide gas is 9%-11%, and the temperature is 70°C.

[0013] Furthermore, the filtered juice heater in step 4 is a tube-in-tube heater, and the heating temperature of the saturated filtered juice is 100-103°C.

[0014] Furthermore, the ratio of the added amount of the flocculant in the step 5 to the saturated filtered juice is 3.5-4.0 ppm, and the filtered juice settler is a ring-shaped inlet and outlet rapid settler.

[0015] Another technical solution of the present invention provides a clarification device for carbonated saturation and sedimentation of filtered juice in a raw sugar production process, comprising a clothless vacuum filter, a filter mud conveyor belt located below the clothless vacuum filter, a filter mud storage bucket located at the end of the filter mud conveyor belt, a filter juice box connected to the clothless vacuum filter, a filter juice buffer box connected to the filter juice box via a filter juice pump, a saturation tank connected to the filter juice buffer box via a neutralizing juice pump, a saturated juice buffer box connected to the saturation tank, a filter juice heater connected to the saturated juice buffer box via a saturated juice pump, a vapor box connected to the filter juice heater, a filter juice settler connected to the vapor box, a clear juice sieve connected to the side of the filter juice settler, a clear juice box connected to the bottom of the clear juice sieve, and a mud and juice stirring tank connected to the bottom of the filter juice settler, wherein the mud and juice stirring tank is also connected to the clothless vacuum filter.

[0016] Furthermore, the saturation tank includes a tank body, an inner overflow annular groove, a steam inlet device, a juice outlet, an outer annular groove juice outlet pipe, an outer annular groove, an outer annular groove juice outlet, a grille device and a stirring device.

[0017] Furthermore, the steam dispersion box includes a box body, a distribution liquid receiving tray is provided in the middle of the box body, a steam dispersion box orifice plate is provided below the distribution liquid receiving tray, a steam dispersion pipe is provided on the top of the box body, a juice drainage pipe is provided on the bottom of the box body, the juice drainage pipe is connected to the juice filter settler, and a flocculant inlet pipe is also provided at the entrance of the juice drainage pipe entering the juice filter settler.

[0018] Preferably, the filter juice settler is provided with a juice inlet annular groove, a juice outlet buffer orifice plate, a juice outlet annular groove, a filter juice pipe, a mud juice concentration chamber, a mud juice pipe and a stirring and scraping mud device.

[0019] In summary, the present invention mainly has the following beneficial effects:

[0020] 1. By setting up a vacuum suction filter without filter cloth, a filter juice box, a filter juice buffer box, a saturated tank, a saturated juice buffer box, a filter juice heater, a filter juice settler steam box, a neutralizing juice settler, a filter juice settler, a filter juice curved screen, a clear juice box and a mud juice stirring tank and other process equipment and auxiliary pipeline valves, the filter juice of the vacuum suction filter without filter cloth is avoided from being refluxed and circulated again, and the evaporation process is directly carried out after a separate sedimentation and clarification. This new clarification method optimizes the original process flow, reduces the material residence time, and thus reduces the sugar conversion loss, while reducing the burden of the neutralizing juice settler. The present invention is applied to the production, and the purification efficiency is increased by 3.92% compared with the average of the past three years, and the purity difference of the clear and mixed juice is increased by 0.65AP compared with the average of the past three years, thereby improving the product quality, improving the quality of the clear juice, and thus improving the scouring recovery rate;

[0021] 2. The present invention optimizes the traditional process flow of filtered juice treatment and creates a process of carbon dioxide CO2 saturated filtered juice. The CO2 saturated gas comes from the relatively common boiler flue gas. By recovering the waste heat and CO2 in the flue gas, the CO2 emission of the sugar factory is reduced while improving the product quality, and the production energy consumption is reduced. At the same time, the clarification method of the present invention uses clarifiers such as phosphoric acid H3PO4 and lime milk Ca(OH)2 in conjunction with the carbon dioxide CO2 saturated process. The clarifiers can mix, react, coagulate, flocculate and other effects on various colloidal pigments and non-sugars in the filtered juice, so as to achieve the purpose of removing colloidal pigments and non-sugars in the cane juice, and the clarification effect is very significant.

[0022] 3. The present invention has done a lot of experimental optimization work before determining the equipment and process flow, applied the best process parameters to quantitative production, and continuously optimized and adjusted according to the actual situation in quantitative production, and finally determined the optimal process flow and optimal process parameters of the above invention content. The entire process flow of the present invention uses a large number of automatic control functions such as liquid level control, temperature control, flow control, pH value control, and uses DCS system programming configuration operation control. Compared with other traditional juice filtering process flows, the present invention not only has a significant clarification effect, but also has a high degree of automation and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a process flow chart of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the full filling tank of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the steam diffuser and the juice filter settler of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] The following describes an embodiment of the present invention based on its overall structure.

[0028] A clarification method for filter juice by carbonation saturation and sedimentation in a raw sugar production process,

[0029] like Figure 1 As shown, the specific operation includes the following steps:

[0030] Step 1, filtering and separating: filtering and separating the mud juice of the neutralized juice settler through a vacuum suction filter 1 without filter cloth to obtain filter mud and filter juice, the filter mud is conveyed to the filter mud storage hopper 3 through a mud conveyor belt 2 for storage, and the filter juice is collected in a filter juice box 4, wherein the moisture content of the filter mud is 70%, the brix of the filter juice is 16°Bx, and the simple purity is 76Ap;

[0031] Step 2, neutralization: the filtered juice in the filtered juice box 4 is pumped into the filtered juice buffer box 6 by the filtered juice pump 5, and then phosphoric acid and lime milk are added to the filtered juice in the filtered juice buffer box 6 for stirring and neutralization, the neutralization pH value is 8.5-9.5, the concentration of phosphoric acid is 85% industrial phosphoric acid, and the ratio of phosphoric acid to filtered juice is 150-200ppm, and the concentration of lime milk is 12°Be;

[0032] Step 3, reaction: the neutralized filtered juice in the filtered juice buffer box 6 is pumped to the saturation tank 8 by the neutralization juice pump 7, the filtered juice enters from the top of the saturation tank 8, and the carbon dioxide gas enters from the middle and lower part of the saturation tank 8. The filtered juice and the carbon dioxide gas react in countercurrent contact in the saturation tank 8 to become saturated juice, and the saturated pH value is 8.0-8.5. The saturated juice is discharged from the outer ring groove outlet of the outer ring of the top of the saturation tank 8 to the saturated juice buffer box 9 for standby use. The source of carbon dioxide is boiler flue gas, and the flue gas extraction equipment is a water ring vacuum pump and ancillary pipelines. The flue gas is cleaned by dust removal and washing, and the volume concentration of carbon dioxide gas is 9%-11%, and the temperature is 70°C;

[0033] Step 4, heating: The saturated juice in the saturated juice buffer tank 9 is pumped to the filtered juice heater 11 for heating by the saturated juice pump 10. The heated saturated juice enters the steam box 12 for full exhaust to obtain filtered juice. The filtered juice heater 11 is a tube-in-tube heater with a heating temperature of 100-103°C.

[0034] Step five, flocculation and sedimentation: the filtered juice enters the filter juice settler 13 through a pipeline from the bottom of the steam box 12, and a flocculant is added into the pipeline to mix the filtered juice fully and then enter the filter juice settler 13 for gravity sedimentation. The ratio of the added amount of flocculant to the saturated filtered juice is 3.5-4.0ppm. The filtered juice overflows from the top of the filter juice settler 13 and is led to the filtered juice curved screen 14. In the clear juice box 15, it is mixed with the clarified juice and enters the next process of evaporation and concentration. The concentrated mud juice is discharged from the bottom of the filter juice settler 13, flows into the mud juice stirring tank 16 by gravity using the height difference, and adds bagasse bran to stir and mix evenly, and then returns to the clothless vacuum suction filter 1 for filtration. The filter juice settler 13 is a ring-shaped feeding and ring-shaped discharging rapid settler.

[0035] like Figure 1-Figure 3As shown, the present invention also discloses a clarification device for carbonation saturation and sedimentation of filtered juice in a raw sugar production process, comprising a clothless vacuum suction filter 1, a filter mud conveyor belt 2 located below the clothless vacuum suction filter 1, a filter mud storage bucket 3 located at the end of the filter mud conveyor belt 2, a filter juice box 4 connected to the clothless vacuum suction filter 1, a filter juice buffer box 6 connected to the filter juice box 4 through a filter juice pump 5, a saturation tank 8 connected to the filter juice buffer box 6 through a neutralization juice pump 7, a saturated juice buffer box 9 connected to the saturation tank 8, a filter juice heater 11 connected to the saturated juice buffer box 9 through a saturation juice pump 10, a vapor box 12 connected to the filter juice heater 11, a filter juice settler 13 connected to the vapor box 12, a filter juice sifter 14 connected to the side of the filter juice settler 13, a clear juice box 15 connected to the bottom of the filter juice sifter 14, and a mud juice stirring tank 16 connected to the bottom of the filter juice settler 13, wherein the mud juice stirring tank 16 is also connected to the clothless vacuum suction filter 1.

[0036] The present invention adopts automatic control functions such as liquid level control, temperature control, flow control, and pH value control, and uses DCS system programming configuration operation control, specifically: the liquid level control of the juice filter box 4 is completed by the juice filter box liquid level transmitter 17-1 and the regulating valve 17-2; the liquid level control of the juice buffer box 6 is completed by the juice filter buffer box liquid level transmitter 18-1 and the regulating valve 18-2; the liquid level control of the saturated juice buffer box 9 is completed by the saturated juice buffer box liquid level transmitter 19-1 and the regulating valve 19-2; the liquid level control of the mud juice stirring tank 16 is completed by the mud juice stirring tank liquid level transmitter 20-1 and the regulating valve 20-2. -2; the amount of phosphoric acid H3PO4 added to the juice buffer box 6 is completed by the juice flow meter 21-1 and the metering pump 21-2; the amount of lime milk Ca(OH)2 added to the juice buffer box 6 is completed by the pH meter 22-1 and the regulating valve 22-2; the saturation pH value of the saturation tank 8 is completed by the pH meter 23-1 and the CO2 regulating valve 23-2; the heating temperature control of the saturated juice by the juice heater 11 is completed by the thermocouple 24-1 and the steam regulating valve 24-2; the amount of flocculant added to the juice settler 13 is completed by the juice flow meter 25-1 and the flocculant metering pump 25-2.

[0037] like Figure 2As shown, the saturation tank 8 of the present invention comprises a tank body 8-1, an inner overflow annular groove 8-2, a steam inlet device 8-3, a juice outlet 8-4, an outer annular groove juice outlet pipe 8-5, an outer annular groove 8-6, an outer annular groove juice outlet 8-7, a grid device 8-8 and a stirring device 8-9. The tank body 8-1 is a vertically arranged structure. The neutralized filtered juice is pumped to the inlet at the top of the tank body 8-1, and flows from top to bottom through the uniform distribution of the overflow annular groove 8-2 in the juice inlet. The steam inlet device 8-3 blows in carbon dioxide CO2 The neutralized filtered juice contacts with the carbon dioxide CO2 gas in countercurrent and reacts fully to become saturated juice. A juice outlet 8-4 is provided at the bottom of the tank body 8-1. The saturated juice is discharged along the juice outlet 8-4, and then rises to the outer ring groove 8-6 along the outer ring groove juice outlet pipe 8-5, and finally overflows from the outer ring groove juice outlet 8-7 to the saturated juice buffer tank 9. In order to allow the neutralized filtered juice and the carbon dioxide CO2 gas to react fully, a grid device 8-8 and a stirring device 8-9 are also provided in the tank body 8-1.

[0038] like Figure 3 As shown, the steam diffuser box 12 of the present invention comprises a box body 12-1, a distribution liquid receiving tray 12-2 is provided in the middle of the box body 12-1, a steam diffuser box orifice plate 12-3 is provided below the distribution liquid receiving tray 12-2, a steam diffuser pipe 12-4 is provided on the top of the box body 12-1, a juice discharge pipe 13-1 is provided at the bottom of the box body 12-1, the juice discharge pipe 13-1 is connected to the filter juice settler 13, and a flocculant inlet pipe 13-2 is provided at the entrance of the juice discharge pipe 13-1 into the filter juice settler 13. The filter juice settler 13 is provided with a juice inlet annular groove 13-3, a juice outlet buffer orifice plate 13-4, a juice outlet annular groove 13-5, a filter juice pipe 13-6, a mud juice concentration chamber 13-7, a mud juice pipe 13-8 and a stirring and scraping mud device 13-9. The function of the steam box 12 is to discharge the gas in the neutralized filtered juice and the factors that interfere with gravity sedimentation to ensure the sedimentation effect; the box body 12-1 of the steam box 12 is a vertical structure, and the neutralized filtered juice is evenly distributed through the distribution and receiving plate 12-2, and the steam box orifice plate 12-3 has the function of fully contacting the steam. The gas in the neutralized filtered juice passes through the steam of the orifice plate 12-3 and is discharged from the steam pipe 12-4. The filtered juice that has been fully discharged from the steam box 12 is fully mixed with the flocculant on the juice discharge pipe 13-1 and then enters the juice inlet ring groove 13-3 of the filter juice settler. The side of the juice inlet ring groove 13-3 is provided with triangular notches of unequal distances. This structure ensures that the filtered juice is evenly distributed into the filter juice settler 13. After gravity sedimentation, the obtained filtered juice rises through the juice outlet buffer orifice plate 13-4 and enters the juice outlet ring groove 13-5, and finally collects in the filter juice pipe 13-6 and is discharged to the filter juice curved screen 14. The muddy juice obtained by gravity sedimentation is concentrated in the muddy juice concentration chamber 13-7 of the settler, and finally flows into the muddy juice stirring tank 16 by the height difference through the muddy juice pipe 13-8. In order to ensure that the muddy juice in the filter juice settler 13 is discharged smoothly and timely, a stirring and scraping mud device 13-9 is provided in the filter juice settler, and the stirring speed is 0.08rpm.

[0039] Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A clarification method for filtrate juice by carbonation sedimentation in a raw sugar production process, characterized in that: The following steps are involved: Step 1, filtering and separation: the mud juice in the neutralized juice settler is filtered and separated by a vacuum suction filter without filter cloth to obtain filter mud and filter juice. The filter mud is conveyed to the filter mud storage bucket through a mud conveyor belt for temporary storage, and then further processed. The filter juice is collected in a filter juice box; Step 2, neutralization: pump the juice in the juice box into the juice buffer box through a juice pump, add phosphoric acid and lime milk into the juice buffer box and stir to neutralize, the neutralization pH value is 8.5-9.5; Step 3, reaction: The neutralized filtered juice in the filtered juice buffer box is pumped to the saturation tank through a neutralizing juice pump. The filtered juice enters from the top of the saturation tank, and the carbon dioxide gas enters from the lower middle part of the saturation tank. The filtered juice and the carbon dioxide gas react in countercurrent contact in the saturation tank to become saturated juice. The saturated pH value is 8.0-8.

5. The saturated juice is discharged from the outer ring groove outlet on the outer ring of the top of the saturation tank to the saturated juice buffer box and enters the next step; Step 4, heating: the saturated juice in the saturated juice buffer tank is pumped to the filter juice heater for heating by the saturated juice pump, and the heated saturated juice enters the steam release box for full steam release before flocculation and sedimentation; Step five, flocculation and sedimentation: the saturated filter juice after heating and steam dissipation enters the filter juice settler from the bottom of the steam dissipation box through a pipe, flocculant is added to the pipeline and fully mixed with the saturated filter juice, and then enters the filter juice settler for gravity sedimentation, the filtered juice overflows from the top of the filter juice settler and is led to the filtered juice curved screen, mixed with the clarified juice in the clear juice box and enters the next process of evaporation and concentration, the concentrated mud juice is discharged from the bottom of the filter juice settler, flows into the mud juice stirring tank by gravity using the height difference, and adds bagasse bran to stir and mix evenly, and then returns to the clothless vacuum suction filter for filtration.

2. The clarification method of filtrate juice by carbonation sedimentation in a raw sugar production process according to claim 1, characterized in that: The moisture content of the filter mud in the step 1 is 70%, the brix of the filter juice is 16°Bx, and the purity is 76Ap.

3. The clarification method of filtrate juice by carbonation sedimentation in a raw sugar production process according to claim 1, characterized in that: In the step 2, the concentration of the phosphoric acid is 85% industrial phosphoric acid, and the ratio of the phosphoric acid to the filtrate is 150-200 ppm, and the concentration of the lime milk is 12° Be.

4. The clarification method of filtrate juice by carbonation sedimentation in a raw sugar production process according to claim 1, characterized in that: The source of carbon dioxide in step three is boiler flue gas, the flue gas extraction equipment is a water ring vacuum pump and its associated pipelines, the flue gas is cleaned by dust removal and washing, the volume concentration of carbon dioxide gas is 9%-11%, and the temperature is 70°C.

5. The clarification method of filtrate juice by carbonation sedimentation in a raw sugar production process according to claim 1, characterized in that: The filter juice heater in step 4 is a tube-in-tube heater, and the heating temperature of the saturated filter juice is 100-103°C.

6. The clarification method of filtrate juice by carbonation and sedimentation in a raw sugar production process according to claim 1, characterized in that: The ratio of the amount of flocculant added in step 5 to the saturated filtered juice is 3.5-4.0 ppm, and the filtered juice settler is a ring-shaped inlet and outlet rapid settler.

7. A clarification device for carbonated juice sedimentation in a raw sugar production process, characterized in that: It includes a cloth-free vacuum filter, a filter mud conveyor belt located below the cloth-free vacuum filter, a filter mud storage hopper located at the end of the filter mud conveyor belt, a filter juice box connected to the cloth-free vacuum filter, a filter juice buffer box connected to the filter juice box via a filter juice pump, a saturation tank connected to the filter juice buffer box via a neutralization juice pump, a saturated juice buffer box connected to the saturation tank, a filter juice heater connected to the saturated juice buffer box via the saturated juice pump, a steam box connected to the filter juice heater, a filter juice settler connected to the steam box, a filter juice sieve connected to the side of the filter juice settler, a clear juice box connected to the bottom of the filter juice sieve, and a mud juice stirring tank connected to the bottom of the filter juice settler, which is also connected to the cloth-free vacuum filter.

8. The clarification device for carbonation and sedimentation of filtered juice in the raw sugar production process according to claim 7, characterized in that: The saturation tank comprises a tank body, an inner overflow annular groove, a steam inlet device, a juice outlet, an outer annular groove juice outlet pipe, an outer annular groove, an outer annular groove juice outlet, a grill device and a stirring device.

9. The clarification device for carbonation and sedimentation of filtered juice in the raw sugar production process according to claim 7, characterized in that: The steam diffuser box includes a box body, a distribution liquid receiving tray is provided in the middle of the box body, a steam diffuser box orifice plate is provided below the distribution liquid receiving tray, a steam diffuser pipe is provided on the top of the box body, a juice drain pipe is provided on the bottom of the box body, the juice drain pipe is connected to the juice filter settler, and a flocculant inlet pipe is also provided at the entrance of the juice drain pipe entering the juice filter settler.

10. The clarification device for carbonation and sedimentation of filtered juice in the raw sugar production process according to claim 9, characterized in that: The filter juice settler is provided with a juice inlet annular groove, a juice outlet buffer orifice plate, a juice outlet annular groove, a filter juice pipe, a mud juice concentration chamber, a mud juice pipe and a stirring and scraping mud device.

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