Mine brine pretreatment method

Abstract

The invention discloses a mine brine pretreatment method. The method comprises the following steps: introducing water by virtue of a brine inlet main pipe, separating the inflow water into two parts, namely brine and associated gas by virtue of a moisture separator, conveying the brine into a salt making workshop for salt manufacturing, and conveying the associated gas to a waste gas combustion device for combusting. The method is characterized in that before the associated gas is conveyed into the waste gas combustion device, the moisture mixed in the associated gas is separated and returns into the salt making workshop, so that the combustion effect of the waste gas combustion device is guaranteed, and the brine utilization rate is improved. The method disclosed by the invention has the advantages that the brine separation degree is high, the brine utilization rate is high, the separated associated gas is full in combustion, the combustion flame is stable, flameout is difficultly caused, repeated ignition of workers is avoided, the operational risk coefficient of the workers is reduced, the condition that the environmental pollution is caused due to overflow of the associated gas is avoided by virtue of closed brine extraction, and the like.

Description

technical field [0001] The invention relates to the field of well mine salt brine treatment, in particular to a method for pretreatment of well mine salt brine. Background technique [0002] Well mine salt refers to the salt made by drilling to draw underground natural brine and the salt made by mining underground rock salt. The production process of well mine salt is divided into two parts: mining and salt production. Underground natural brine is extracted by dredging, gas lift 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. [0003] During the water solution mining process of rock salt drilling, methane, hydrogen sulfide, methane total hydrocarbons and other gases are often produced together; they cannot be directly used for production and processing, and brine needs to be pretreated to separate the associated gas contained in brine. At the same tim...

AI Technical Summary

Problems solved by technology

The existing separation technology has insufficient separation degree, unstable gas volume leads to insufficient combustion during combustion, large emission pollution of combustibles, loud noise, easy flameout, and manual repeated ignition is required, which increases the risk factor of workers' operation. In addition, the open There are still disadvantages such as associated gas escaping and polluting the surrounding environment

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