Method and system for washing corn starch by reduced swirler separation

A technology of cyclone separation and corn starch, which is applied in the field of corn starch separation protein and washing process, can solve the problems of high energy consumption and long time consumption, and achieve the effect of reducing energy consumption and step time

Inactive Publication Date: 2012-12-12
东郡兴邦(北京)商贸有限公司
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Problems solved by technology

[0004] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a method for washing cornstarch with dehydration system for protein separ

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  • Method and system for washing corn starch by reduced swirler separation

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Embodiment

[0034] Method of the present invention comprises the steps:

[0035] Step 1: After adjusting the Baume concentration of coarse starch milk in the total storage tank to 30-34°Bx / 45°C, pressurize it with the starch cyclone pump and enter the cyclone separator W1;

[0036] Step 2: Top flow mixture from cyclone W1 Ti The top flow concentration is 4-8°Bx, the mass percentage of protein dry basis is 40% to 50%, the content of starch dry basis is 50% to 60%, and the top flow mixture Ti Top flow mixture with cyclone W2 TII , top flow mixed liquid of cyclone separator W3 TIII After confluence, after mixing, it enters the cyclone separator W4, the cyclone separator W5 and the cyclone separator W6; Ti >Top flow mixture TII >Top flow mixture TIII , top flow mixture TIII The protein dry basis mass percentage content is 22%.

[0037] Step 3: Underflow mixture from cyclone W1 BI For, the underflow concentration is 40-42°Bx, the mass percentage of protein dry basis is 0.4%-1%, t...

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Abstract

The invention relates to a method and system for washing corn starch by reduced swirler separation. A three-stage diversion swirl system I is used for diverting crude starch milk, the protein solution from the top flow enters a three-stage diversion swirl system II, and through the three-stage diversion swirl system II, corn protein powder with the total protein content of 60-63% can be obtained only by refluxing instead of water treatment of the centrifuge. The invention uses 1.5 times of washing water consumption of the refluxing swirl method to achieve the goal of reducing the stages of swirlers on the premise of ensuring the washing effect. The invention greatly shortens the swirl washing time and the energy consumption of the swirl system; and the whole technique can shorten the swirl washing step time by 80% and reduce the energy for the swirl system by 72%.

Description

technical field [0001] The invention relates to a cornstarch protein separation and washing process, as well as the process water treatment and closed-circuit circulation process in the process, in particular to a method and system for reducing and washing cornstarch by cyclone separation. Background technique [0002] In the production process of corn starch, coarse starch milk is obtained after extraction by grinding and sieving, with a concentration of 10-12.5°Bx / 20°C (physical relative density is 1.040-1.051, dry basis content is 10.23%-12.74%). Calculated on a dry basis, the ingredients are 89% to 92% of starch, 6% to 8% of protein, 0.5% to 1% of fat, 0.1% to 0.3% of soluble matter, 0.2% to 0.3% of ash, and 0.1g / L of fine residue. [0003] For this crude starch milk, the current more common treatment method is to remove gluten protein by sedimentation in a centrifugal sedimentation machine, and then use a cyclone station of a 10-15-stage cyclone to wash countercurrentl...

Claims

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Application Information

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IPC IPC(8): C08B30/04C08B30/10
Inventor 施韧
Owner 东郡兴邦(北京)商贸有限公司
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