Method for extracting bromine from salt-making waste liquid
A technology for preparing salt liquid and waste liquid, applied in the directions of bromine, bromine/hydrogen bromide, etc., can solve the problems of environmental hazards, ineffective utilization of brine, waste of brine water resources, etc., and achieve significant economic benefits.
Active Publication Date: 2019-12-13
金盛海洋科技股份有限公司
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Problems solved by technology
[0002] The mother liquor obtained after salt water (sea water, salt lake water) is evaporated and concentrated to precipitate salt (sodium chloride) is bittern, which tastes bitter and astringent, and mainly contains potassium chloride, magnesium chloride, magnesium sulfate and bromine; The final brine has not been effectively utilized, but has been directly or indirectly treated, causing harm to the environment, and at the same time, causing a serious waste of brine resources
Method used
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Embodiment 1
[0024] Such as figure 1 The method for extracting bromine by using the salt-making waste liquid shown is as follows: the first step, the salt-making liquid is poured in, and the salt-making liquid of 25-28 degrees Baumé is pumped into the suction tower by a brine pump;
[0025] The second step is to ignite the sulfur furnace. After the sulfur furnace burns, start the fan, open the air inlet valve, and send the sulfur particles into the sulfur furnace with a feeder. The sulfur dioxide gas generated is passed into the suction tower. After the tail gas of the emptying tower section turns from yellow to white smoke, it is sent into steam from the boiler room;
[0026] The third step is to open the control valve of the carburetor, preheat the carburetor, and the temperature reaches 60 ℃ ~ 80 ℃; close the damper of the large fan, start the large fan, and open the damper after the fan is running normally; close the outlet valve of the brine pump, start the vacuum pump motor, wait Af...
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The invention discloses a method for extracting bromine from salt-making waste liquid. The method comprises the following steps: step 1, pumping the salt-making waste liquid; step 2, igniting a sulfurfurnace to obtain sulfur dioxide gas, introducing the sulfur dioxide gas into a suction tower, and feeding steam from a boiler room; step 3, opening a control vaporizer valve; step 4, starting an atomization clear water pump; step 5, opening a vaporizer gas inlet valve and a chlorine gas steel cylinder valve; step 6, adjusting the feeding amount of fresh water to make a blow-out rate to be 75-85%and preparing semi-finished absorption liquid; and step 7, starting a cooling water pump. According to the method for extracting bromine from the salt-making waste liquid, salt-making liquid having aconcentration of 25-28 baume degrees and generated by production of a raw salt is introduced into a bromine extraction system via a pipeline, and process bromine extraction is carried out; and the method well utilizes a salt-making liquid resource having a concentration of 25-28 baume degrees, recycles the salt-making liquid with the concentration of 25-28 baume degrees, and produces remarkable economic benefits.
Description
technical field [0001] The invention relates to a method for extracting bromine, in particular to a method for extracting bromine by using salt-making waste liquid, and belongs to the technical field of secondary utilization of salt-making waste liquid. Background technique [0002] The mother liquor obtained after salt water (sea water, salt lake water) is evaporated and concentrated to precipitate salt (sodium chloride) is bittern, which tastes bitter and astringent, and mainly contains potassium chloride, magnesium chloride, magnesium sulfate and bromine; The final brine was not effectively utilized, but was directly or indirectly treated, causing harm to the environment, and at the same time, causing a serious waste of brine resources. Contents of the invention [0003] In order to solve the above-mentioned problems, the present invention proposes a method for extracting bromine by using salt-making waste liquid, using bittern produced after salt-making as a raw materi...
Claims
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Login to View More IPC IPC(8): C01B7/09
CPCC01B7/096
Inventor 张大腾孙玉尧
Owner 金盛海洋科技股份有限公司