JPS6117480B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a production method for producing a plurality of types of glucose solutions with different concentrations from a purified glucose solution (undiluted solution).

At a glucose manufacturing factory, glucose solution usually begins with the liquefaction process of starch milk, which is the raw material, and then goes through the saccharification and purification process to reach a concentration of approximately 30 B _x . After concentrating this liquid to a predetermined concentration using a multi-effect can (continuous concentration can), etc., it can be used for liquid glucose, purified glucose, crystallized glucose, etc.
It is normally sent to the next process, such as for high-fructose sugar. Although not all factories have the manufacturing processes to make all of these products, they may produce a wide variety of products. The optimum concentration required for these products varies depending on the system used in the subsequent process, but is usually not the same concentration. For example, 75B _x for liquid glucose and refined glucose, and 75B x for crystalline glucose.
65B _x , and 45-50B _x for isomerized sugar. On the other hand, if the requirements for concentrations differ in the subsequent processes, it is difficult to create various concentrations with one multi-effect container.
Generally, this is done in the following way.

That is, when several concentrations are required, the solution is continuously concentrated to the lowest concentration, and for other uses, this low concentration solution is sent and reconcentrated in the subsequent process. For example, specifically, for the lowest concentration of isomerized sugar syrup, it is concentrated to about 50B _x , and this 50B _x
The liquid is also used for crystallized glucose. Crystallization cans for crystalline glucose are usually batch type, and the required optimum concentration is generally 65B _x , making crystallization easy to operate. but,
If a 50B _x liquid is used here, the concentration step in the crystallization operation will increase, and since it is a batch method, the amount of steam used will be more than that in a multi-effect can, and the time required for boiling sugar will be longer. In other words, by using a multi-effect can, steam can be saved by increasing the concentration as much as possible in the multi-effect can.

For example, if there are three required concentrations, concentrate to an intermediate concentration, and dilute lower concentrations with water. In addition, higher concentrations are made by reconcentration.
In other words, specifically, it is concentrated to 65B _x , which is optimal for crystalline glucose, and 50B _x for isomerized sugar is
It may be used diluted with water. However, this method cannot be said to be a good method for steam economy as it involves diluting the concentrated material with water.
In this way, a method is used in which liquids of different concentrations are sequentially produced using one multi-effect can and sequentially filled into receiving tanks in batch mode.

However, this method has the drawback that the final concentration of the multi-effect can can be changed each time it is operated, so the set concentration of the multi-effect can must be changed frequently, and the concentration process cannot be followed quickly. The efficiency was low, errors occurred in the concentration of the product, and it was necessary to make adjustments again in the subsequent process.Also, since it was a batch method, the tank was large and the capacity of the concentration can was also large.

In the present invention, a part of the stock solution is concentrated to the same concentration as the product with the highest concentration to produce a concentrate, and a part of the concentrate and the remainder of the stock solution are used to produce a solution other than the highest concentration product. Glucose solutions of various concentrations that can always be produced continuously and at the same time by mixing a part of them at a predetermined mixing ratio, without the above-mentioned drawbacks of the conventional method. The purpose of this invention is to provide a method for manufacturing.

When producing multiple types of glucose solutions with different concentrations from a glucose stock solution, the present invention concentrates a portion of the stock solution to produce a concentrated solution with the same concentration as the highest concentration of the glucose solutions to be produced. and at least a portion of the residual liquid of the stock solution and at least a portion of the concentrated liquid are mixed at a predetermined mixing ratio to form a mixed solution to continuously produce multiple types of glucose solutions with different concentrations. This is a method for producing glucose solutions of various concentrations.

The present invention will be described with reference to the drawings in accordance with an embodiment. FIG. 1 is a basic flowchart, in which a purified glucose solution, which is a stock solution, is supplied from a stock solution introduction pipe 1 and temporarily stored in a stock solution tank 2. From this stock solution, purified glucose solutions (concentration 75B _x ), crystalline glucose solutions (concentration
65B _x ) and isomerized sugar solution (concentration 50B _x ) are 75B _x , tank 3, 65B _x tank 4 and 50B _x, respectively.
It is temporarily stored in a tank 5 and sent to the next process by pumps 6, 8, etc.

A part of the stock solution in the stock solution tank 2 is passed through a stock solution pipe 11 by a pump 9 to a concentration can 12 such as a multi-effect can.
The remaining part enters the stock solution pipe 13 by the pump 10, branches, and enters stock solution pipes 14 and 15 having a flow rate adjustment valve 18 on one side, and stock solution pipes 16 and 17 having a flow rate adjustment valve 19 on the other side. enter. The steam evaporated in the concentrating can 12 is discharged to the outside of the system through a steam pipe 20, the concentrated liquid is discharged to a concentrated liquid pipe 21, and a portion is directly transferred to concentrated liquid pipes 23 and 24 having a flow rate control valve 22. It flows and flows into 75B _x tank 3. In the concentration can 12, the concentration of the concentrated liquid sent out is adjusted by known means so that the concentration is 75B _x , which is the highest concentration among the solutions to be produced. The remainder of the concentrate branches off and enters the concentrate pipe 25, and part of it branches off and passes through the concentrate pipes 26 and 27, mixes with the stock solution in the stock pipe 15, passes through the line mixer 28, and enters the mixed liquid pipe 29.
The branched remainder passes through the concentrated liquid pipe 30, mixes with the stock solution in the stock solution pipe 17, passes through the line mixer 32 _, and flows into the _50Bx tank 5 from the mixed liquid pipe 33. 34 and 35 are flow rate regulating valves.

Reference numerals 36, 37, and 38 are flow rate indicating controllers that detect the flow rate and control the flow rate regulating valves 22, 34, and 35, respectively, so that a predetermined flow rate is achieved. However, if the amount flowing into the concentrate pipe 31 is the entire remaining amount of the amount flowing into the flow rate adjustment valves 22 and 34, the flow rate adjustment valve 35 is not particularly necessary. 39 and 40 are flow rate ratio indicating controllers;
detecting the flow rates of the concentrate tubes 26 and 30, respectively;
The flow regulating valves 18 and 19 are controlled so that the flow rates of the stock solution in the stock solution pipes 15 and 17 are at predetermined ratios to this flow rate, respectively.

A feature of this method is that the liquid is mixed only by the flow rate ratio, and although it is simple, if the concentration of the stock solution at the inlet or the concentration at the outlet of the concentration can changes, the concentration of the solution obtained by mixing will also change. However, the range of fluctuation is smaller than the original fluctuation, and unless the mixed liquid is shipped as a final liquid product, a small amount of liquid concentration will not normally cause a problem in the subsequent process, so it is economical and practical. It can be said that it is a practical method.

When driving, as shown in Figure 2, 30B _x
With the stock solution, the purified glucose solution with a concentration of 75B _x is x Kg/H as solid weight (that is, the solution weight is 4/3 x Kg/H), and the crystallized glucose solution with a concentration of 65B _x is as solid weight y Kg/H ( That is, the solution weight is 20/13yKg/H) and the concentration is 50B _x
zKg/H as the solid weight of the isomerized sugar solution
(i.e., the weight of the solution is 2zKg/H), and if the concentration of the stock solution is 30B _x , the solid content in the stock solution is (x + y + z) Kg/H, so the volume of the stock solution is 10 /3(x+y+z)Kg/H
So, in the concentration can (2x + 70/39y + 4/3z) Kg
/H is evaporated and discharged outside the system, and within the system, flow rate regulating valves 22, 34, 35, 18,
19 should be controlled.

In order to obtain a liquid with the desired concentration by mixing two liquids with different concentrations, if you know the concentration of both liquids and the flow rate of one liquid on the inlet side of the mixing point, you can control the flow rate of the other liquid. obtained by. That is, when liquids A and B mix to form liquid C as shown in Figure 3, A,
The flow rates of B and C are respectively F ₁ , F ₂ , F ₃ , the specific weights are γ ₁ , γ ₂ , γ ₃ respectively, and the concentrations are B _x
1 , B _x2 , and B _x3 , then from the solid content balance F ₁ γ ₁ B _x1 +F ₂ γ ₂ B _x2 =F ₃ γ ₃ B _x3 ...(1) From the total weight balance F ₁ γ ₁ +F ₂ γ ₂ =F ₃ γ ₃ ...(2) From (1) and (2), F ₂ = γ ₁ /γ ₂・B _x1 −B _x3 /B _x3 −B _x2・
F ₁ ...(3) Here, put γ ₁ = K ₁ B _x1 γ ₂ = K ₂ B _x2 (K ₁ , K ₂ ... constant) and enter in (3) F ₂ = K ₁ /K ₂・B _x1 /B _x2・B _x1 -B _x3 /
_{B x 3 -B _ _ _ _} B _x1 - β)/B _x2 (B _x2 -
β)・F ₁ ...(5) is obtained. That is, if two concentration points on the inlet side and one flow rate point are known, the outlet concentration can be determined by controlling the other flow rates according to equation (5).

Examples of actual numbers allocated according to Figure 2 are shown in Figure 4.
As shown in the figure.

Figure 5 shows another example, in which a concentrated solution (75B _x )
65B _x manufactured by mixing and stock solution (30B _x )
A part of the concentrated solution is further mixed with the stock solution (30B _x ) to obtain a solution with a concentration of 50B _x .
The input and output conditions of this system are the same as those shown in FIG. 2, but the distribution of each path within the system is as shown in FIG.

FIG. 6 shows the actual numbers allocated according to FIG.

FIG. 7 shows another embodiment, and shows a control system that is further added to the control shown in FIG. 1 when the concentration at the outlet of the concentration can 12 is stabilized by the concentration control device but the concentration at the inlet changes. The concentration of the crystallized glucose solution produced by mixing is detected by the mixing liquid pipe 29, and the concentration of the isomerized sugar solution is detected by the mixing liquid pipe 33, and the flow rate is adjusted by the concentration indicator controller 48 and concentration detector 49. The valves 18 and 19 are controlled to keep the product concentration constant. FIG. 8 shows another embodiment, and shows a control method to be added in addition to the control method shown in FIG. 1 when both the concentration at the inlet and the concentration at the outlet of the concentration can 12 vary. For convenience of explanation, only the control method for a solution with a concentration of 65B _x is shown, but the same applies to a solution with a concentration of 50B _x . A concentration detector 49 for detecting the concentration in the concentration can 12, a concentration detector 50 and a flow rate detector 51 for detecting the concentration and flow rate of the stock solution in the stock solution tube 15 are provided, and these signals are input to the calculation control mechanism 52 for calculation. Then, the flow rate adjustment valve 34 is controlled by the flow rate indicating controller 53.
to obtain a predetermined concentration of 65B _x .

When producing multiple types of glucose solutions with different concentrations from a glucose stock solution, the present invention concentrates a portion of the stock solution to produce a concentrated solution with the same concentration as the highest concentration of the glucose solutions to be produced. and by mixing at least a portion of the residual liquid of the stock solution and at least a portion of the concentrate at a predetermined mixing ratio to form a mixed solution, and continuously producing multiple types of glucose solutions with different concentrations. , it is possible to continuously and simultaneously produce many types of solutions at various predetermined concentrations at any time, increasing efficiency and increasing production capacity.Since it is not a batch type, the capacity of the receiving tank can also be small. It is possible to provide a method for producing glucose solutions of various concentrations, which can reduce the capacity of the concentration can and reduce equipment costs and operating costs, and has extremely great practical effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a flow diagram, FIG. 2 is a flow diagram showing flow distribution within the system, FIG. 3 is a diagram explaining the amount of mixture, and FIG. 4 is a flow diagram showing actual flow distribution. 5 is a flowchart of the flow rate distribution of another embodiment, FIG. 6 is a flowchart of its actual value, and FIGS. 7 and 8 are flowcharts showing different control methods. 1...Stock solution introduction pipe, 2...Stock solution tank, 3...
75B _x tank, 4...65B _x tank, 5...50B _x tank, 6, 8, 9, 10... pump, 11... stock solution tube, 12... concentration can, 13, 14, 15, 1
6,17...Standard liquid pipe, 18,19...Flow rate adjustment valve, 20...Steam pipe, 21...Concentrate liquid pipe, 22...
...Flow rate adjustment valve, 23, 24, 25, 26, 27...
... Concentrate liquid pipe, 28 ... Line mixer, 29 ... Mixed liquid pipe, 30, 31 ... Concentrate liquid pipe, 32 ... Line mixer, 33 ... Mixed liquid pipe, 34, 35 ... Flow rate adjustment valve, 36 , 37, 38...Flow rate indicator controller, 39, 40...Flow rate ratio indicator controller, 48...
Concentration indicator controller, 49, 50...Concentration detector, 5
1...Flow rate detector, 52...Arithmetic control mechanism, 53
...Flow rate indicator controller.

Claims (1)

[Claims] 1. When producing multiple types of glucose solutions with different concentrations from a glucose stock solution, a portion of the stock solution is concentrated to produce a concentrated solution with the same concentration as the highest concentration of the glucose solutions to be produced, and the The present invention is characterized in that at least a portion of the residual liquid of the stock solution and at least a portion of the concentrated liquid are mixed at a predetermined mixing ratio to form a mixed solution, and a plurality of types of glucose solutions having different concentrations are continuously produced. Method for producing glucose solutions of various concentrations.