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Method of removing odors in refined salt

A technology for refining salt and odor, applied in the field of salt chemical industry, can solve problems such as hindering the healthy development of the salt industry economy, unpleasant smell of salt products, etc., and achieve the effects of stable treatment effect, easy industrial production, and wide sources

Inactive Publication Date: 2017-09-15
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the salt products produced at designated locations often have an unpleasant smell. All enterprises have paid a heavy price for this, and it has also hindered the healthy development of the salt industry in Henan Province.

Method used

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  • Method of removing odors in refined salt
  • Method of removing odors in refined salt
  • Method of removing odors in refined salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The present invention removes the method for peculiar smell in refined salt, and the detailed steps of this method are as follows:

[0042] A, at first the hydrochloric acid that mass percentage concentration is 36% is diluted with water to become the dilute hydrochloric acid that mass percentage concentration is 7%, under the condition of constantly stirring, gained dilute hydrochloric acid 4.5g is joined in the 500g refined edible salt that takes by weighing, Stir well until the two are evenly mixed to obtain a mixture;

[0043] B. Under the condition of stirring, add 3.5 g of aqueous hydrogen peroxide solution with a mass percentage concentration of 27.5% and 5 g of an aqueous sodium chlorite solution with a mass percentage concentration of 10% to the mixture obtained in step a and mix evenly. Finally, put it into an oven with a preset temperature of 75°C and set the drying temperature;

[0044] c. In step b, set the final drying temperature to 105°C and the drying ...

Embodiment 2

[0048] The present invention removes the method for peculiar smell in refined salt, and the detailed steps of this method are as follows:

[0049] A, at first the hydrochloric acid that mass percent concentration is 36% is diluted with water to become the dilute hydrochloric acid that mass percent concentration is 7%, under the condition of constantly stirring, gained dilute hydrochloric acid 2.5g is joined in the 500g refined edible salt that takes by weighing, Stir well until the two are evenly mixed to obtain a mixture;

[0050] B, under the condition of stirring, add mass percent concentration to the mixture obtained in step a and be 27.5% hydrogen peroxide aqueous solution 4.0g and mass percent concentration be 10% sodium chlorite aqueous solution 2.0g to mix evenly, mix After uniformity, put it into an oven with a preset temperature of 60°C, and set the drying temperature;

[0051] c. In step b, set the final drying temperature to 125°C and the drying time to 12 minutes...

Embodiment 3

[0055] The present invention removes the method for peculiar smell in refined salt, and the detailed steps of this method are as follows:

[0056] A, at first the hydrochloric acid that mass percent concentration is 36% is diluted with water into the dilute hydrochloric acid that mass percent concentration is 7%, under the condition of constantly stirring, gained dilute hydrochloric acid 3.2g is joined in the refined edible salt of 500g that takes by weighing, Stir well until the two are evenly mixed to obtain a mixture;

[0057] B, under the condition of stirring, add mass percent concentration to the mixture obtained in step a and be 4.0g of aqueous hydrogen peroxide solution of 27.5% and 2.5g of sodium chlorite aqueous solution of 10% of mass percent concentration and mix uniformly, mix After uniformity, put it into an oven with a preset temperature of 60°C, and set the drying temperature;

[0058] c. In step b, set the final drying temperature to 130°C and the drying time...

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Abstract

The invention discloses a method of removing odors in refined salt. The method comprises the following steps: firstly, adding an initiator into the refined salt under the condition of continuous stirring, and stirring and uniformly mixing to obtain a mixture; adding an aqueous hydrogen peroxide solution, a sodium chlorite aqueous solution and a sodium hypochlorite aqueous solution into the mixture, and after uniformly mixing, putting the mixture into an oven at a preset temperature to dry; and analyzing the product refined salt after drying by means of headspace gas chromatography and calculating the content of residual odor matters. The refined salt processed by the method can be odorless and meets the related regulation of latest edition of national standard. The content of total volatile organic compounds in a processed sample can be reduced to below 5mg / kg and butyric acid is not detected. Therefore, the effect of processing odor in the processed refined salt is obvious.

Description

technical field [0001] The invention belongs to the technical field of salt chemical industry, and in particular relates to a method for removing peculiar smell in refined salt. Background technique [0002] China's raw salt production capacity has reached 100 million tons, and most of it is used in the chlor-alkali industry except for table salt. China has become the world's largest producer and consumer of chlor-alkali. At present, raw salt production in my country mainly includes sea salt, lake salt and mine salt. Among them, well mine salt has gradually become the mainstream raw salt product due to its high quality. In the production of mine salt, Sichuan Province has the highest output, while Henan Province has the highest quality. The prospective reserves of salt mines in Henan Province are 350 billion tons, and the ore grade sodium chloride content is between 75 and 90%, with an average of more than 85%, which belongs to CaSO 4 type deposit. The content of harmfu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L5/20
Inventor 杨李富陈纯路新燕何占航王楠刘宁马海博陈岩唐明生李中军要红昌王建设左军安宋昊轩曹卫东时国梁
Owner ZHENGZHOU UNIV
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