Device and method for zero emission preparation of aqueous oxidizer salt solution

Abstract

The invention relates to a device and a method for the zero emission preparation of an aqueous oxidizer salt solution. The device of the invention concretely comprises a preparation tank, a coarse filter tank, a fine filter tank, a water tank, a wastewater concentration precipitation tank, a recovered water filter and a recovered water tank, recovered water which is filtered by the recovered water filter is injected to the recovered water tank by the lower space under the filter screen in the recovered water filter through a pipeline, and the recovered water in the recovered water tank is injected to the preparation tank through a pipeline. The invention also relates to the method for preparing the aqueous oxidizer salt solution through using the device. Advantages of the device and the method of the invention are shown in the specification.

Description

technical field [0001] The invention relates to the technical field of emulsion explosive manufacture, in particular to a device and method for preparing an oxidizer salt solution with zero discharge, and the oxidizer salt solution can be used to prepare emulsion explosives. Background technique [0002] The main raw materials contained in the oxidant brine solution used to prepare emulsion explosives are nitrate oxidizers such as ammonium nitrate and sodium nitrate, which are easily soluble in water and are corrosive. Therefore, the manufacturing equipment, pipelines, valves, and testing equipment are made of stainless steel and other resistant Made of corroded material. Raw materials are inevitably scattered during the manufacture of oxidant brine solution, some of which are mixed with impurities and cannot be reused, and the ground must be cleaned with water to generate waste water. In addition, the oxidant salt solution is very easy to crystallize and solidify, block th...

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Problems solved by technology

Raw materials are inevitably scattered during the manufacture of oxidant brine solution, some of the scattered raw materials cannot be reused due to impurities mixed in, and the ground must be cleaned with water to generate waste water

In addition, the oxidant salt solution is very easy to crystallize and solidify, block the pipeline, and the inside of the equipment is very easy to crystallize and solidify. Therefore, the inside and outside of the equipment and pipeline must be cleaned regularly, resulting in a large amount of waste water

[0003] The production line of domestic industrial emulsion explosives focuses on the amount of input raw materials in the preparation of oxidant salt solution. Due to the differences in the quality of raw materials, the oxidant salt solution manufactured according to this method seems to be qualified, but in fact the internal quality varies greatly. Due to the process control, all the wastewater in the manufacturing process is discharged into the nature, which seriously pollutes the environment and causes waste of water resources. At the same time, effective substances such as oxidant salts are also wasted.

At present, domestic technology has not yet paid attention to the extent to which industrial wastewater must be recycled. Wastewater is discharged directly after it is produced. Because it does not contain heavy polluting substances, the country has not implemented mandatory control

People have not fully grasped or focused on controlling the recycling of wastewater produced by the production of oxidant brine solution; the parameter control of the manufacturing process of oxidant brine solution is not carried out, resulting in the imbalance of oxidizer brine solution

[0004] Generally speaking, when the oxidant salt solution is prepared at present, the water containing the oxidant salt is directly discharged, and while water resources are wasted, effective substances such as the oxidant salt are wasted; , turbidity, crystallization point, temperature unified control technology

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