Process and equipment for treating waste water in the production of high-purity barium hydroxide

Abstract

The invention relates to a process and equipment for treating wastewater in the production of high-purity barium hydroxide, wherein the outlet of the barium hydroxide reactor is connected to a separator, the outlet of the wastewater from the separator is connected to the barium chloride reactor through a pipeline, and a stirring device is installed in the barium chloride reactor The barium chloride reaction kettle is also equipped with an acid inlet and a barium carbonate inlet, the acid inlet is connected to the acid pump, and the barium carbonate inlet is connected to the barium carbonate storage pump. The outlet is connected to the separator waste water outlet pipe through an elbow. The design of the waste water treatment process equipment is reasonable, fully recycles the barium ions in the waste water, makes the waste water treatment continuous, improves the waste water treatment efficiency, greatly reduces the environmental pollution, reduces the production cost of the chlor-alkali plant, and can collect different locations at the same time waste water, to ensure the continuity of waste water treatment in the barium chloride reactor, which has good economic benefits.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment in the production of high-purity barium hydroxide, in particular to a process and equipment for treating wastewater in the production of high-purity barium hydroxide. Background technique [0002] Barium hydroxide is an important variety of barium salt products. It is widely used in sewage purification. It is an effective remover for carbon dioxide and sulfate ions in the water treatment industry. It is also necessary in the pharmaceutical, plastic, glass, ceramic, and electronic industries. Chemicals, can be used to make organic barium compounds, barium-based grease, also used in refined animal and vegetable oils, sucrose, sugar beet, also used in plastic stabilizers, paper additives, sealing components, rubber vulcanization catalysts, antirust paper groups Coating dispersant, polyurethane foam fire extinguishing agent, silk and rayon treatment agent, boiler hard water softener and n...

AI Technical Summary

Problems solved by technology

[0008] Disadvantages of this method: high production cost, raw material utilization rate is only 70%, resource utilization rate is low, crystallization mother liquor contains barium chloride, barium hydroxide, sodium chloride, sodium hydroxide, difficult to recycle, usually directly discharged as waste water

[0012] ①The production cost is high, and the raw materials require good quality of witherite, but the current high-quality witherite mineral resources are becoming increasingly exhausted, while the utilization rate of process raw materials is only 50%, and the resource utilization rate is low;

[0013] ②The high-temperature reaction takes a long time and consumes a lot of energy. The high-temperature reaction at 1400°C takes dozens of hours to complete

[0014] ③The service life of the clip bowl containing the reaction materials is only 2-3 times, the cost is high, the waste water is directly discharged, and it is difficult to recover the barium in the waste water

The method is simple, the production is clean, the cost is low, the manganese dioxide is recycled, and the consumption is very small, but there is also no wastewater treatment link, and the wastewater in the filtration, concentration and other links is directly discharged, and the barium ions in it cannot be fully recovered.

[0018] The annual output of barium hydroxide in my country is about 30,000 tons, and the product share of high-purity barium hydroxide is increasing. A large amount of waste water is generated in the production of high-purity barium hydroxide, and the barium ions in it cannot be fully recycled, and most of them are directly discharged, which increases the environment. pollution, waste of resources

Images