阅读说明：本技术 一种活性炭脱色系统 (Active carbon decoloration system ) 是由 程新平 徐开蕾 沈峰 蔡澄亮 安延龙 许雄鹏 龚小平 于 2019-12-12 设计创作，主要内容包括：本发明的一种活性炭脱色系统,包括依次通过管路相互连接的甜水桶、配炭罐、脱色罐、板框、缓冲罐和离子交换柱,在甜水桶内储存有待脱色的糖液原料,在板框的出口上设置有将清洗板框时收集的清洗液流回到甜水桶进口的清洗液回流管路,在离子交换柱的出口上设置有将再生离子交换柱时收集的再生液流回到甜水桶进口的再生回流管路。在发明通过回收木糖醇液混合粉末活性炭,减少了活性炭的结块现象,使活性炭的脱色效果更加充分。另一方面,通过回收利用板框及离子交换柱清洗时收集的木糖醇液作为粉末活性炭的液体介质,不仅节约了资源,实现了资源的再利用,而且还节省了后续蒸发工艺的时间,降低了成本。(The invention discloses an activated carbon decoloring system which comprises a sweet water barrel, a carbon preparation tank, a decoloring tank, a plate frame, a buffer tank and an ion exchange column which are sequentially connected with one another through pipelines, wherein sugar solution raw materials to be decolored are stored in the sweet water barrel, a cleaning solution backflow pipeline for enabling cleaning solution collected when the plate frame is cleaned to flow back to an inlet of the sweet water barrel is arranged on an outlet of the plate frame, and a regeneration backflow pipeline for enabling regeneration solution collected when the ion exchange column is regenerated to flow back to the inlet of the sweet water barrel is arranged on an outlet of the ion exchange column. According to the invention, the xylitol solution mixed powder active carbon is recovered, so that the caking phenomenon of the active carbon is reduced, and the decolorizing effect of the active carbon is more sufficient. On the other hand, the xylitol solution collected by the plate frame and the ion exchange column during cleaning is recycled as the liquid medium of the powdered activated carbon, so that not only are resources saved and the resources are recycled, but also the time of the subsequent evaporation process is saved and the cost is reduced.)

1. The utility model provides an active carbon decoloration system, its characterized in that includes sweet water bucket (1), the charcoal jar (2) of joining in marriage that loop through pipeline interconnect, decoloration jar (3), sheet frame (4), buffer tank (5) and ion exchange column (6) store in sweet water bucket (1) and remain the sugar liquid raw materials of decoloration be provided with washing liquid reflux pipeline (14) that the washing liquid stream that collects when will wasing sheet frame (4) is got back to sweet water bucket (1) import on the export of sheet frame (4) be provided with regeneration reflux pipeline (15) that the regeneration liquid stream that collects when regenerating ion exchange column (6) flows back to sweet water bucket (1) import on the export of ion exchange column (6).

2. The activated carbon decolorization device according to claim 1, wherein a return pipe (7) is further provided between the decolorization tank (3) and the carbon preparation tank (2), a first valve (8) is provided on the return pipe (7), a second valve (9) and a third centrifugal pump (12) are respectively provided on a pipeline (16) between the decolorization tank (3) and the plate frame (4), and the pipeline (16) is communicated with the return pipe (7).

3. Activated carbon decolorization system according to claim 1, characterized in that a first centrifugal pump (10) is arranged on the line (17) between the sweet water tank (1) and the carbon preparation tank (2).

4. Activated carbon decolorization system according to claim 1, characterized in that a second centrifugal pump (11) is provided on the line (18) between the carbon preparation tank (2) and the decolorization tank (3).

5. The activated carbon decolorization system according to claim 1, characterized in that a first stirring device (21) is provided on said carbon preparation tank (2).

6. The activated carbon decolorization system according to claim 1, characterized in that a second stirring device (31) is provided on said decolorization tank (3).

7. Activated carbon decolorization system according to claim 1, characterized in that a first level gauge is provided on said sweet water tank (1).

8. The steamed activated carbon decolorization system according to claim 1, characterized in that a second liquid level meter is provided on said carbon dispensing tank (2).

Technical Field

The invention belongs to the technical field of sugar liquor decolorization, and particularly relates to an activated carbon decolorization system.

Background

The adding method of the active carbon in the existing active carbon decoloring system mostly adopts the direct unloading of an active carbon silo or adopts the pump to add the active carbon after mixing the carbon powder and water. Wherein, the defect of direct discharging is as follows: (1) the dust emission is large, and the field environment is not good; (2) the dosage is inaccurate, and the dissipation and the residue of the carbon powder are difficult to avoid; (3) the carbon powder is easy to agglomerate when just contacting the liquid surface, so that the active carbon is not sufficiently decolorized. The carbon powder is added in a mode of mixing with water, and due to the addition of the water, the material is diluted in the decoloring process and needs to be evaporated in the subsequent process of sugar making, so that the time of the evaporation process is prolonged, and the cost is increased.

Therefore, the active carbon decoloring system in the prior art has the technical problems of resource waste and low decoloring efficiency.

Disclosure of Invention

The invention aims to solve the technical problems that an activated carbon decoloring system which is cost-saving, environment-friendly and resource-recyclable is provided and is used for solving the technical problems that the activated carbon decoloring system in the prior art is serious in resource waste and low in activated carbon decoloring efficiency.

The invention is realized in such a way, and provides an activated carbon decoloring system, which comprises a sweet water bucket, a carbon preparation tank, a decoloring tank, a plate frame, a buffer tank and an ion exchange column which are sequentially connected with one another through pipelines, wherein sugar liquor raw materials to be decolored are stored in the sweet water bucket, a cleaning solution backflow pipeline for enabling cleaning solution collected when the plate frame is cleaned to flow back to an inlet of the sweet water bucket is arranged on an outlet of the plate frame, and a regeneration backflow pipeline for enabling regeneration solution collected when the ion exchange column is regenerated to flow back to the inlet of the sweet water bucket is arranged on an outlet of the ion exchange column.

In the scheme, the xylitol liquid collected during cleaning of the plate frame and the ion exchange column is recycled as the liquid medium of the powdered activated carbon, so that not only are resources saved, but also the recycling of the resources is realized, the time of the subsequent evaporation process is saved, and the cost is reduced.

Furthermore, a return pipeline is further arranged between the decolorizing tank and the carbon preparation tank, a first valve is arranged on the return pipeline, a second valve and a third centrifugal pump are respectively arranged on a pipeline between the decolorizing tank and the plate frame, and the pipeline is communicated with the return pipeline.

This scheme makes the decoloration liquid of decoloration jar output flow back to joining in marriage the charcoal jar, and the decoloration liquid of cyclic utilization decoloration jar output through retrieving xylitol liquid mixed powder active carbon, has reduced the caking phenomenon of active carbon, makes the decoloration effect of active carbon more abundant.

Further, a first centrifugal pump is arranged on a pipeline between the sweet water barrel and the carbon preparation tank.

Further, a second centrifugal pump is arranged on a pipeline between the carbon preparation tank and the decolorizing tank.

Further, a first stirring device is arranged on the carbon preparation tank.

Further, a first liquid level meter is arranged on the sweet water bucket.

Further, a second liquid level meter is arranged on the carbon distribution tank.

Compared with the prior art, the activated carbon decoloring system comprises a sweet water bucket, a carbon preparation tank, a decoloring tank, a plate frame, a buffer tank and an ion exchange column which are sequentially connected with one another through pipelines, wherein sugar solution raw materials to be decolored are stored in the sweet water bucket, a cleaning solution backflow pipeline for enabling cleaning solution collected when the plate frame is cleaned to flow back to an inlet of the sweet water bucket is arranged at an outlet of the plate frame, and a backflow pipeline for enabling regeneration solution collected when the ion exchange column is regenerated to flow back to the inlet of the sweet water bucket is arranged at an outlet of the ion exchange column. In the invention, the agglomeration phenomenon of the activated carbon is reduced by recycling xylitol liquid mixed powder activated carbon, so that the decoloring effect of the activated carbon is more sufficient. On the other hand, the xylitol solution collected by the plate frame and the ion exchange column during cleaning is recycled as the liquid medium of the powdered activated carbon, so that not only are resources saved and the resources are recycled, but also the time of the subsequent evaporation process is saved and the cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, a preferred embodiment of an activated carbon decoloring system according to the present invention includes a sweet water tank 1, a carbon preparation tank 2 with mixing capability, a decoloring tank 3 with stirring capability, a plate frame 4, a buffer tank 5 and an ion exchange column 6, which are sequentially connected to each other through a pipeline.

Wherein, the sweet water barrel 1 stores the sugar solution raw material to be decolorized, and the liquid level meter is used for recovering the water-topped sugar solution for cleaning the plate frame 4 and the ion exchange column 6. The carbon preparation tank 2 contains a liquid level meter and is used for mixing and preparing the sugar liquid stored in the sweet water bucket 1 and the powdered activated carbon and temporarily storing the prepared mixed liquid. The decolorizing tank 3 is used for carrying out activated carbon decolorization and adsorption on the sugar solution. The plate frame 4 contains filter cloth, is used for filtering the active carbon in the mixed solution of the decoloration liquid and the active carbon, needs to be cleaned at intervals, and needs drinking water to eject residual sugar liquid in the plate frame before cleaning. The buffer tank 5 is used for temporarily storing the decolorized liquid filtered by the plate frame 4 and ensuring the continuous operation of the ion exchange column 6. The ion exchange column 6 contains ion exchange resin, is used for removing anions and cations in the destaining solution, needs to be regenerated at intervals, and needs drinking water to eject residual sugar solution in the destaining solution before regeneration.

A cleaning liquid return pipeline 14 for returning the cleaning liquid collected when the plate frame 4 is cleaned to the inlet of the sweet water barrel 1 is arranged on the outlet of the plate frame 4, and a regeneration return pipeline 15 for returning the regeneration liquid collected when the ion exchange column 6 is regenerated to the inlet of the sweet water barrel 1 is arranged on the outlet of the ion exchange column 6.

In a preferred embodiment, the outlet of the sweet water barrel 1 is connected with the inlet of the carbon preparation tank 2, the outlet of the carbon preparation tank 2 is connected with the inlet of the decolorizing tank 3, the outlet of the decolorizing tank 3 is connected with the inlet of the plate frame 4, the outlet of the plate frame 4 is connected with the inlet of the buffer tank 5, and the outlet of the buffer tank 5 is connected with the inlet of the ion exchange column 6 through pipelines, and pneumatic valves are respectively arranged on the pipelines and can be pneumatic butterfly valves.

In a preferred embodiment, a return pipeline 7 is further arranged between the decolorizing tank 3 and the carbon distribution tank 2, a first valve 8 is arranged on the return pipeline 7, a second valve 9 and a third centrifugal pump 12 are arranged on a pipeline 16 between the decolorizing tank 3 and the plate frame 4, and the pipeline 16 is communicated with the return pipeline 7. The first valve 8 controls the decolorizing tank 3 to be connected with the carbon preparation tank 2, and the second valve 9 controls the decolorizing tank 3 to be connected with the plate frame 4. The first valve 8 and the second valve 9 can work in cooperation, and the first valve 8 and the second valve 9 can also work independently.

The third centrifugal pump 12 is used for inputting the decolorized liquid in the decolorization tank 3 to the plate frame 4 through a pipeline 16 and the second valve 9, or inputting the decolorized liquid in the decolorization tank 3 back to the carbon preparation tank 2 through a return pipeline 7 and the first valve 8 when the decolorized liquid is abnormal.

In a preferred embodiment, a first centrifugal pump 10 is arranged on a pipeline 17 between the sweet water barrel 1 and the carbon preparation tank 2 and is used for inputting the sugar liquid recovered in the sweet water barrel 1 into the carbon preparation tank 2.

A second centrifugal pump 11 is arranged on a pipeline 18 between the carbon preparation tank 2 and the decolorizing tank 3 and is used for inputting the mixed liquid of the mixed active carbon in the carbon preparation tank 2 into the decolorizing tank 3.

A fourth centrifugal pump 13 is arranged between the buffer tank 5 and the ion exchange column 6, and the fourth centrifugal pump 13 is used for inputting the decolorizing liquid into the ion exchange column 6.

In a preferred embodiment, a first stirring device 21 is disposed on the carbon preparation tank 2, and the first stirring device 21 comprises a motor for uniformly mixing the activated carbon and the recovered sugar solution, so as to prevent the activated carbon from depositing. The decoloring tank 3 is provided with a second stirring device 31, and the second stirring device 31 includes a motor, so that the activated carbon mixed solution is in full contact with the decoloring solution, and the decoloring effect of the activated carbon is fully exerted. The sweet water barrel 1 is provided with a first liquid level meter (not shown in the figure). The carbon distribution tank 2 is provided with a second liquid level meter (not shown in the figure).

The working process of the activated carbon decoloring system comprises the following steps:

the water top xylitol solution of the plate frame 4 and the ion exchange column 6 flows into the sweet water barrel 1 for recovery. The recovered xylitol liquid enters the carbon preparation tank 2 through the first centrifugal pump 10, when the xylitol liquid is not recovered, the first valve 8 and the third centrifugal pump 12 between the decolorizing tank 3 and the carbon preparation tank 2 are operated to input the decolorized liquid into the carbon preparation tank 2, and the proportion of the active carbon is 1m³200kg of active carbon is added into the recovered xylitol solution/decolored solution. The recovered xylitol solution/decolored solution and the activated carbon are uniformly mixed under the stirring action of the first stirring device 21 on the carbon preparation tank 2.

After a certain amount of decoloration liquid is output, the activated carbon mixed liquid in the carbon preparation tank 2 is input into the decoloration tank 3 through a second centrifugal pump 11. The xylitol solution is uniformly mixed with the newly added xylitol solution under the stirring action of the second stirring device 31 on the decoloring tank 3, and the output decoloring solution sequentially enters the filtering plate frame 4, the buffer tank 5 and the ion exchange column 6 and finally goes out to the subsequent process.

The plate frame 4 and the ion exchange column 6 need to be cleaned and regenerated respectively every time the plate frame 4 and the ion exchange column 6 are used for a period of time, the residual xylitol liquid in the plate frame 4 and the ion exchange column 6 needs to be cleaned by clean water before the process, and the collected water washing liquid returns to the sweet water barrel 1 through the cleaning liquid return pipeline 14 and the regeneration return pipeline 15 respectively to complete a cycle.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.