Method for direct production of gluconic acid sodium salt with dry method

A sodium gluconate, direct technology, applied in the field of dry method direct catalytic oxidation to produce sodium gluconate, can solve the problems of environmental pollution, high production cost, etc., achieve the effect of reducing production process, reducing production cost, saving water and labor

Inactive Publication Date: 2009-05-13
HENAN XINGFA FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of environmental pollution and high production cost in the existing sodium gluconate production process, to provide a kind of raw materi...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1 Preparation of Sodium Gluconate Using Corn as Raw Material

[0014] (1) Corn crushing: using the existing crushing equipment to crush and degrease the dry corn raw material.

[0015] (2) Jet liquefaction: the corn flour obtained in step 1 is used as raw material, and the liquefaction enzyme adopts Liguozyme R suprc (purchased from Novozymes), the addition amount is 0.30Kg / t, a low-pressure injector with gas is used, the pressure difference between the material pressure and the steam pressure is 0.3mPa, the first injection temperature is 105°C, and the injection time is 10min , after the first spraying, maintain 95°C for 60 minutes, the iodine reacts with maroon, and the DE value is 14%; the second spraying at a high temperature of 135°C makes the protein highly cohesive and stratified, and removes the protein.

[0016] (3) Filter press to remove slag: the feed liquid obtained in step 2 is separated and slag removed with an existing plate and frame filter pres...

Embodiment 2

[0021] Example 2 Preparation of Sodium Gluconate Using Rice as Raw Material

[0022] (1) Rice crushing: using existing crushing equipment to crush and degrease the dry rice raw material.

[0023] (2) Jet liquefaction: the rice flour obtained in step 1 is used as raw material, and the liquefaction enzyme adopts Liguozyme R suprc (purchased from Novozymes), the addition amount is 0.70Kg / t, using a low-pressure injector with gas with the material, the pressure difference between the material pressure and the steam pressure is 0.3mPa, the first injection temperature is 110°C, and the injection time is 12min , after the first spraying, maintain 90min at 95°C, the iodine reacts with maroon, and the DE value is 16%; the second spraying at a high temperature of 135°C makes the protein highly cohesive and stratified, and removes the protein.

[0024] (3) Filter press to remove slag: the feed liquid obtained in step 2 is separated and slag removed with an existing plate and frame filte...

Embodiment 3

[0029] Example 3 Preparation of sodium gluconate with dried sweet potato as raw material

[0030] (1) Sweet potato dry crushing: using existing crushing equipment to crush and degrease the dry sweet potato raw material.

[0031] (2) Jet liquefaction: the sweet potato powder obtained in step 1 is used as raw material, and the liquefaction enzyme adopts Liguozyme R suprc (purchased from Novozymes), the addition amount is 0.50Kg / t, a low-pressure injector with gas is used, the pressure difference between the material pressure and the steam pressure is 0.3mPa, the first injection temperature is 108°C, and the injection time is 11min , after the first spraying, maintain 95°C for 80 minutes, the iodine reacts with maroon, and the DE value is 15%; the second spraying at a high temperature of 135°C makes the protein highly cohesive and stratified, and removes the protein.

[0032] (3) Filter press to remove slag: the feed liquid obtained in step 2 is separated and slag removed with a...

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PUM

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Abstract

The invention discloses a method for directly producing sodium gluconate by a dry method. In the method, corn, rice or potato is directly used as a raw material, and subjected to crushing, spraying liquefaction, press filtration deslagging, saccharification hydrolysis, carbon adding microfiltration, ion exchange and catalytic oxidation to obtain the sodium gluconate. In the method, the corn, rice or potato is directly used as the raw material, ground by the dry method, and prepared into glucose hydrolysis solution by a bi-enzyme method, and the glucose hydrolysis solution is directly catalyzed and oxidized to prepare the sodium gluconate, thereby saving the steps of starch preparation, glucose crystallization, centrifugal separation, drying and the like, not causing environmental pollution, greatly reducing production procedures, saving water resources and manpower and lowering production cost.

Description

technical field [0001] The invention relates to a preparation method of sodium gluconate, in particular to a method for producing sodium gluconate by direct catalytic oxidation in a dry process. Background technique [0002] Sodium gluconate is a kind of sodium polyhydroxycarboxylate. Its main uses are (1) It is used in medicine to regulate the acid-base balance in the human body to restore the normal function of the nerves. Sodium can maintain extracellular osmotic pressure and capacity and regulate acid-base balance , Play an important role in the normal function of neuromuscular. (2) It has excellent corrosion and scale inhibition effects, and is widely used as a water quality stabilizer. (3) Used as steel surface cleaning agent: If the steel surface needs to be plated, chrome-plated, tin-plated, or nickel-plated for special purposes, the surface of the steel billet must be strictly cleaned to make the coating and the steel surface firmly bonded. At this time Adding sod...

Claims

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Application Information

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IPC IPC(8): C12P7/42
Inventor 安庆堂肖有余安民冯斌斌王建中
Owner HENAN XINGFA FINE CHEM
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