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Preparation method of ecological well rock salt

A well mine salt and ecological technology, applied in the field of ecological mine salt preparation, can solve problems such as non-conformity, and achieve the effects of avoiding adhesion, high product quality, and improving product quality

Pending Publication Date: 2022-01-28
山东岱岳制盐有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent CN104973611B discloses a preparation method of pickling salt, using saturated brine as raw material, first purifying it with a purifying agent, and then evaporating and concentrating crystallization through an evaporator to obtain pickling salt with high purity and large particles, wherein the brine is purified by hydrogen It is realized by adding chemicals such as sodium oxide, sodium carbonate, and calcium chloride, which obviously does not conform to the concept of "ecological salt"

Method used

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  • Preparation method of ecological well rock salt

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Effect test

Embodiment 1

[0029] A kind of preparation method of ecological well mineral salt, concrete steps are as follows:

[0030] (1) First add natural rock salt collected from 1,000 meters underground into the reactor, heat it to 650°C, feed carbon dioxide into the reactor under heat preservation, and discharge the molten material in the reactor through the outlet;

[0031] (2) Then heat to 799° C., feed carbon dioxide into the reactor under heat preservation state, and discharge the molten material in the reactor through the outlet;

[0032] (3) Then be heated to 830 ℃, pass into carbon dioxide in the reaction kettle under the heat preservation state, collect the material of molten state from the outlet of reaction kettle, cool to obtain solid, get 10kg solid and add 120kg water, stir and dissolve, obtain brine;

[0033] (4) Finally, pump the brine into the five-effect evaporator for evaporation and crystallization, and the five-effect discharge volume is 15%, 30%, 45%, 60%, and 50% of the corre...

Embodiment 2

[0042] A kind of preparation method of ecological well mineral salt, concrete steps are as follows:

[0043] (1) First add natural rock salt collected from 1,000 meters underground into the reactor, heat it to 750°C, feed carbon dioxide into the reactor under heat preservation, and discharge the molten material in the reactor through the outlet;

[0044] (2) Then heat to 799° C., feed carbon dioxide into the reactor under heat preservation state, and discharge the molten material in the reactor through the outlet;

[0045](3) Then be heated to 820 ℃, pass into carbon dioxide in the reaction kettle under heat preservation state, collect the material of molten state from the outlet of reaction kettle, cool to obtain solid, get 10kg solid and add in 150kg water, stir and dissolve, obtain brine;

[0046] (4) Finally, pump the brine into the five-effect evaporator for evaporation and crystallization, and the five-effect discharge volume is 15%, 30%, 45%, 60%, and 50% of the corresp...

Embodiment 3

[0055] A kind of preparation method of ecological well mineral salt, concrete steps are as follows:

[0056] (1) First add natural rock salt collected from 1,000 meters underground into the reactor, heat it to 700°C, feed carbon dioxide into the reactor under heat preservation, and discharge the molten material in the reactor through the outlet;

[0057] (2) Then heat to 799° C., feed carbon dioxide into the reactor under heat preservation state, and discharge the molten material in the reactor through the outlet;

[0058] (3) Then be heated to 825 ℃, pass into carbon dioxide in the reactor under heat preservation state, collect the material of molten state from the outlet of reactor, cool to obtain solid, get 10kg solid and add in 140kg water, stir and dissolve, obtain brine;

[0059] (4) Finally, pump the brine into the five-effect evaporator for evaporation and crystallization, and the five-effect discharge volume is 15%, 30%, 45%, 60%, and 50% of the corresponding feed amo...

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Abstract

The invention discloses a preparation method of ecological well rock salt. The method comprises the following steps: by taking natural rock salt collected from the underground depth of 1000 meters as a raw material, carrying out three-step heating under the condition of introducing carbon dioxide, carrying out evaporative crystallization by combining a five-effect evaporator, collecting salt slurry, carryong out centrifugally dewatering and drying, thereby obtaining the ecological well rock salt. In the preparation process, use of chemicals such as sodium hydroxide and sodium carbonate is avoided, and the method is pure, free of additives and high in product quality.

Description

technical field [0001] The invention relates to a preparation method of ecological well mine salt. The invention belongs to the technical field of edible salt processing. Background technique [0002] Well mine salt is salt made by drawing underground natural brine through drilling and processed by mining underground rock salt. The production process is divided into two parts: mining and salt production. Salt is made by boiling in round pans and flat pans for a long time. Since the end of the 19th century, advanced technologies such as vacuum evaporation, hot-press evaporation, vacuum and hot-press combination have been gradually adopted to make salt. As for mining, the underground natural brine is extracted by the extraction method, gas lift method or submersible brine pump; rock salt is divided into tunnel mining (dry mining) and water-soluble mining according to the deposit geology, occurrence conditions and grade. Among them, rock salt is formed by depositing into lay...

Claims

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Application Information

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IPC IPC(8): C01D3/08A23L27/40
CPCC01D3/08A23L27/40C01P2006/65C01P2006/80
Inventor 裴庆军张英仓曹伟王淑刚党召芳李梦夏赵振
Owner 山东岱岳制盐有限公司
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