Preparation method of deep-well alkalescent table salt
A weakly alkaline edible salt and deep well technology, applied in the food field, can solve the problems of smoke, dust, impurities, gastric irritation, etc., and achieve the effect of protecting titanium equipment and low operating costs
Active Publication Date: 2015-12-23
山东岱岳制盐有限公司
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Problems solved by technology
[0002] After hydrolysis, the underground rock salt has many impurities, and contains calcium ions, sulfate ions, magnesium ions, lead ions, fluoride ions, arsenic ions, barium ions, etc. that are harmful to human health. Long-term consumption will affect people's health. Unfortunately, most of the edible salt currently produced is weakly acidic, which is easy to irritate the stomach.
At present, domestic brine treatment methods mainly include the flue gas brine purification method and the two-alkali method to treat brine. The flue gas brine purification method requires an investment of 50 million to 80 million yuan. The treated brine contains smoke and dust, and the cost per ton of salt increases. About 30 yuan, while the two-alkali treatment of brine requires an investment of 40 million to 60 million yuan, and the cost of ton salt increases by about 30 yuan
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[0016] The specific embodiments of the present invention are given below with reference to the accompanying drawings, which are used to further describe the composition of the present invention in detail.
[0017] The preparation method of the deep well water salt of the present embodiment may further comprise the steps:
[0018] (1) Collect rock salt at a depth of more than 1,000 meters underground, and extract saturated sodium chloride solution through drilling and water dissolution. 3 flow into the ③# reaction pool;
[0019] (2) ①# sodium carbonate solution mixing tank volume is 14m 3 , add 960kg of sodium carbonate, melt with steam condensed water with a temperature of 40°C-60°C and a pH value of 7-9, the pH value of the sodium carbonate solution after melting is 14, and ②# sodium carbonate solution stirring tank is a spare tank;
[0020] (3) at 1.75m per hour 3 Add the prepared sodium carbonate solution to the ③# reaction pool at the flow rate;
[0021] (4) Add the fo...
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The invention relates to a preparation method of deep-well alkalescent table salt and belongs to the technical field of food. The preparation method of deep-well alkalescent table salt comprises the following steps: (1) collecting halite from deeper than 1000-meter underground, extracting saturated sodium chloride solution by drilling solution, then filtrating and entering into the reaction pool No. 3; (2) adding steam condensate, whose temperature is 40 DEGC-60 DEG C and PH value is 7-9, into sodium carbonate solution mixing tank No. 1 or sodium carbonate solution mixing tank No. 2, mixing by the first mixer 12 or the second mixer 13 for 30 minutes, and melting food-grade sodium carbonate into sodium carbonate solution whose PH value is 12-14. According to the preparation method of deep-well alkalescent table salt, brine is firstly treated by the food-grade additive two-base method and then filtrated and deposited by the three-stage overflow method, so that PH value of the treated brine is up to 8-10; the preparation method has low total operating cost, high sodium chloride purity and overall alkalescence.
Description
technical field [0001] The invention relates to a preparation method of deep well weak alkaline edible salt, belonging to the technical field of food. Background technique [0002] After the underground rock salt is hydrolyzed, there are many impurities, and it contains calcium ions, sulfate ions, magnesium ions, lead ions, fluoride ions, arsenic ions, barium ions, etc. that are harmful to human health. Long-term consumption will affect people's health. Unfortunately, most of the edible salt currently produced is weakly acidic, which is easy to irritate the stomach. At present, domestic brine treatment methods mainly include the flue gas brine purification method and the two-alkali method to treat brine. The flue gas brine purification method requires an investment of 50 million to 80 million yuan. The treated brine contains smoke and dust, and the cost per ton of salt increases. About 30 yuan, while the two-alkali treatment of brine requires an investment of 40 million to ...
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Login to View More IPC IPC(8): A23L1/237A23L1/03
CPCA23V2002/00A23V2200/06
Inventor 国兴君张泉侯广宪张传水
Owner 山东岱岳制盐有限公司