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A method for recovering starch syrup separation press water

A technology of starch syrup and recovery method, which is applied in the direction of chemical instruments and methods, sugar production, sugar production, etc., which can solve the problems of large equipment processing capacity, high operating pressure, and high energy consumption, and achieve low recovery cost and low energy consumption. Reduced, low energy consumption effect

Active Publication Date: 2019-06-21
鲁洲生物科技(山东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the feed liquid with high impurities is directly concentrated by membrane equipment with a small pore size, which greatly reduces the processing capacity of the equipment, easily causes membrane clogging, and requires high operating pressure and high energy consumption.

Method used

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  • A method for recovering starch syrup separation press water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for recovering starch syrup separation press water, comprising steps as follows:

[0028] (1) After the normal use of the ion exchange column fails, use deionized water to press the material. The flow rate of the material is 3 times the volume of the resin per hour, and the sugar solution with a concentration of more than 15% is recovered to the pre-delivery tank for ion exchange again, and the collection concentration is 15%. The sugar liquid until 0 is sent to the temporary storage tank of dilute sugar water, waiting for subsequent processing.

[0029] (2) Carry out ultrafiltration membrane filtration with all press dilute sugar water collected in step (1), the molecular weight cut-off scope of ultrafiltration membrane is 7kDa, operating pressure 0.8Mpa, operating temperature≤45 ℃, concentration factor 6. With impurities such as proteins and pigments with a large molecular weight cutoff, the sugar is passed through, and the retained liquid is sent to the sewa...

Embodiment 2

[0033] A method for recovering starch syrup separation press water, comprising steps as follows:

[0034] (1) After the normal use of the ion exchange column fails, use deionized water to press the material. The flow rate of the material is 4 times the volume of the resin per hour. The sugar solution with a concentration of more than 15% is recovered to the pre-delivery tank for ion exchange again, and the collection concentration is 15%. The sugar liquid until 0 is sent to the temporary storage tank of dilute sugar water, waiting for subsequent processing.

[0035] (2) All the pressed material dilute sugar water collected in step (1) is subjected to ultrafiltration membrane filtration. The molecular weight cut-off range of the ultrafiltration membrane is 8kDa, the operating pressure is 0.9Mpa, the operating temperature is ≤45°C, and the concentration factor is 7. With impurities such as proteins and pigments with a large molecular weight cutoff, the sugar is passed through, a...

experiment example

[0041] The obtained starch syrup detachment and pressure water recovery method of Examples 1-2 was compared with the method of Comparative Example 1 in terms of processing capacity, energy consumption and detachment cost. The comparison results are shown in Table 1 below.

[0042] Table 1

[0043]

[0044] As can be seen from the above table 1, the method for recovering starch syrup separation pressure feed water of the present invention reclaims starch syrup separation pressure feed water, and the dilute sugar solution is refined and preliminarily concentrated by membrane equipment. The processing capacity of the present invention is Large size, high efficiency, low energy consumption, and low recovery cost; the water and sugar in the washing liquid of the separation column are recovered, reducing the washing water discharge and washing water COD; the sugar solution is recycled after concentration, and the dialyzed water can be recycled Repeated flushing of the separation ...

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Abstract

The invention relates to a recovery method for starch syrup ion exchange material pressing water, in which the starch syrup ion exchange material pressing water is recovered by purifying and primarily concentrating dilute sugar liquid respectively through an ultra-filtration membrane and a reverse osmosis membrane. In the method, sugar in the material pressing water is completely recovered and recycled, thus reducing waste water emission, solving a problem of fermenting deterioration of starch milk and reducing purification cost. The dilute sugar liquid is subjected to primary concentration by the reverse osmosis, so that energy consumption is greatly reduced than evaporative concentration. In addition, deionized water being high in quality can be co-produced. The method is beneficial to clean production of starch syrup and makes a contribution to energy saving and emission reduction.

Description

technical field [0001] The invention relates to a method for recovering starch syrup detachment press water, which belongs to the technical field of corn deep processing and food processing. Background technique [0002] In the existing starch syrup production process, the sugar liquid produced after starch preparation, liquefaction, and saccharification needs to go through the "ion exchange" process after being decolorized by activated carbon to further remove colloidal proteins, inorganic salts, and organic acids. and small molecular pigments and other impurities to further purify the sugar solution. [0003] In the current ion exchange process, after the resin reaches the processing capacity and becomes invalid, tap water should be passed through to push out the sugar liquid. The sugar solution is directly discharged to the sewage treatment process. This approach will easily lead to the fermentation and rancidity of the feed liquid, which will seriously affect the produ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/44C13K1/08C02F103/32
CPCC02F1/441C02F1/444C02F2103/32C13K1/08
Inventor 王德友赵玉斌孔磊
Owner 鲁洲生物科技(山东)有限公司
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