Method for cooking a starchy material with a high solids content for the preparation of an adhesive composition

A technology for cooking starch and starch, applied in the direction of binder type, starch binder, fiber raw material processing, etc., can solve the problems of insufficient rheology and adhesion performance, and achieve the effect of easy drying and raw material saving

Inactive Publication Date: 2009-04-08
ROQUETTE FRERES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, insufficient rheological and adhesi

Method used

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  • Method for cooking a starchy material with a high solids content for the preparation of an adhesive composition
  • Method for cooking a starchy material with a high solids content for the preparation of an adhesive composition
  • Method for cooking a starchy material with a high solids content for the preparation of an adhesive composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] The device structure is shown in FIG. 3 . The start-up of the device is at point 2, providing delivery of powdered starch in the form of corn dextrin at a rate of 100 kg / h. At the same time, the flow rate of water (points 11, 12 and / or 13) is 100 l / h.

[0106] The amount of steam provided at 150°C (6) is distributed through the bottom of the cooking chamber (6-4). A temperature of 90° C. can be reached and ensured during the start-up phase.

[0107] At 150° C., the same mass of steam is supplied via point 8 to the colloidal suspension (glue) obtained by setting an average residence time in the cooking chamber of 15 minutes.

[0108] The resulting solution was passed through the coiled tube in 4 minutes, benefiting from a count-pressure set at about 5 bar and corresponding to an internal temperature of about 150°C.

[0109] Then, different recirculation conditions are determined at point 10 so that 10, 20 and 40 liters of solution are recirculated respectively, and th...

Embodiment 2

[0112] As illustrated by Figure 2, this situation corresponds to a device that does not provide glue recirculation. The corn dextrin emulsion of Example 1 obtained starting with a starch flow rate of 473.8 kg / h and a water flow rate of 710.6 kg / h was prepared continuously. The milk, having a density of 1.184 at 20°C and 40°C, received a steam flow of 110.5 kg / h at 150.4°C and a pressure of 5.4 bar (construction 6-3). The gum was produced in this way at a rate of 1294.9 kg / h at a dry matter level of 36.59% (821.1 kg / h of water + 473.8 kg / h of starch).

[0113] On the other hand, powdery starch with a water content of 10% was introduced at a flow rate of 920.1 kg / h (828 kg / h dry starch + 92 kg / h water).

[0114] Starting from these conditions, the ratio of powder / glue is defined as 71.0%, and the ratio of powder / (glue+powder) is 41.54%.

[0115] Thus, the cooking chamber receives 913.1 kg / h of water and 1301.8 kg / h of starch in the form of glue or powder at a temperature of ab...

Embodiment 3

[0120] FIG. 1 illustrates the situation disclosed in this embodiment. This time, this example corresponds to a device that provides for the recycling of glue that has been added to the carrier fluid in the form of glue derived from the preparation of starch emulsions.

[0121] The flow rates of the gum and starch emulsions derived from this (structure 6-3) were those of Example 2.

[0122] On the other hand, the glue produced at the outlet of the coiled tube no longer leads fully to the machine. The majority (1500 kg / h) is diverted and recycled in order to constitute the carrier fluid for the envisaged cooking. This operation results in a significant increase in the flow rate of the powdered starch. In fact, it increased to 1559.2 kg / h (1403.3 kg / h dry starch + 155.9 kg / h water).

[0123] The established system was profoundly changed. In fact, the cooking chamber received a mixture with 63.09% dry matter at a total flow rate of 4354.15 kg / h (1607.1 kg / h of water + 2747.05 ...

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Abstract

The invention relates to a method for cooking a starchy composition, comprising: (a) a first step comprising mixing at least one starch powder with an aqueous starch fluid, wherein the ratio of the mixture of the starch powder to the aqueous starch fluid is such that the total starch content of the mixture obtained is greater than 45% by weight, and wherein said first step is carried out in a cooking chamber maintained at a temperature at least equal to the highest gelatinization temperature (GT) of all the starches present in the mixture, for a period of time sufficient to obtain a colloidal solution of starch, and (b) a second step comprising heating the colloidal solution of starch obtained in step (a), at a pressure greater than atmospheric pressure and at a temperature of between 120 DEG C and 180 DEG C.

Description

technical field [0001] The present invention relates to a continuous or discontinuous process for cooking starchy raw materials having a high dry matter content, the resulting starch composition and its use, in particular as a binder. Background technique [0002] The object of the present invention is to propose a relatively simple and inexpensive cooking method that allows the cooking of liquid starch aqueous compositions with a high dry matter content. The process makes it possible to obtain an aqueous starch solution, substantially free of granular starch, while having a high dry matter content greater than 35% by weight and preferably less than 75% by weight, and having sufficient Low viscosity and good storage stability, in other words, the cooled starch composition does not show any retrogradation (gelatinization caused by recombination of amylose macromolecules). [0003] Various devices and methods for the continuous production of starch glues in the form of colloi...

Claims

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Application Information

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IPC IPC(8): C08B30/12C09J103/02
CPCC08B30/12D21H17/28D21H19/12D21H19/54C09J103/02C08B30/16
Inventor 克里斯托夫·巴斯蒂安克里斯蒂安·布克桑帕特里克·多希吕迪维内·奥尼克菲利普·萨布尔
Owner ROQUETTE FRERES SA
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