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Novel method for producing ammonium persulfate through ammonium sulfate electrolysis

A technology of ammonium persulfate and ammonium sulfate, which is applied in the electrolysis process, electrolysis components, electrodes, etc., can solve the problems of high environmental protection pressure, low product purity, and complicated purification of production enterprises, and achieve waste liquid treatment and production process optimization. , long service life effect

Inactive Publication Date: 2018-06-29
铜陵泰富特种材料有限公司
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Problems solved by technology

The anthraquinone method is a new method, which has the characteristics of low energy consumption, but the product purity is not high, and the subsequent purification is more complicated; the electrolysis method is characterized by high product purity, but the power consumption is also high, and the production enterprises are under great environmental protection pressure

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  • Novel method for producing ammonium persulfate through ammonium sulfate electrolysis

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Embodiment 1

[0019] [Example 1] The ammonium sulfate produced by the ammonium sulfate section of the coking enterprise is used as the anolyte, the sulfuric acid solution is used as the catholyte, the anode solution enters the electrolytic cell with 120~140t / h for electrolysis at a flow rate of 15~35t / h; The electrolyzed anolyte contains 200g / L ammonium persulfate, with an acidity of 0.4~0.5mol / L, and is pumped to the ammonium sulfate feeding reactor; the ammonium sulfate produced by the coking enterprise is added to the reactor by screw conveying to The concentration is 1.25~1.26g / mL, and liquid ammonia is passed through to adjust the pH of the solution to about 6~7; the solution is filtered through the anode material filter to remove Fe(OH)3, and sulfuric acid with an acidity of 3.0~4.0 is used for backwashing every two days One time; the filtered solution enters the cooling tank and cools the solution to -3~-8°C to crystallize ammonium persulfate; the feed liquid containing crystals is se...

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Abstract

The invention relates to a novel method for producing ammonium persulfate through ammonium sulfate electrolysis. A coking enterprise technology is utilized in the ammonium persulfate production process, raw materials of a coking enterprise are fully utilized, energy medium resources are produced, production cost is reduced, and the problems that additional value of an ammonium sulfate product in aconventional technology of the coking enterprise is low and waste liquids of a traditional ammonium persulfate production enterprise are difficult to treat are solved. The method comprises the following steps that a, ammonium sulfate and sulfuric acid produced by the coking enterprise are adopted as raw materials, ammonium persulfate is produced through electrolysis, after electrolysis, a solution is filtered, cooled and centrifuged, an ammonium persulfate product is obtained, and a mother solution circulates as an anolyte for electrolysis; b, after sulfuric acid and water are supplemented into a catholyte obtained after electrolysis, the catholyte is reutilized, and generated hydrogen is led out through a closed pipeline; and c, power generation can be achieved through steam and circulating water produced by the coking enterprise during the production process, and generated waste liquids are internally treated through the coking enterprise.

Description

technical field [0001] The invention relates to a novel ammonium sulfate electrolysis method for producing ammonium persulfate, in particular to a novel ammonium sulfate electrolysis production method for ammonium persulfate with clean production characteristics. Background technique [0002] Ammonium persulfate is a colorless monoclinic crystal or white powder crystal, molecular formula: (NH 4 ) 2 S 2 o 8 , relative molecular weight: 228.22, density 1.98. It can be completely decomposed at 120°C. It can be stored for a long time without decomposing when it is completely dry. It is not easy to absorb moisture, but it will gradually decompose and release oxygen and ozone after absorbing moisture. Soluble in water and thermally decomposed. With strong oxidizing properties, it can be used as a chemical reagent, oxidizing agent, bleaching agent, deodorizing agent, and monomer polymerization initiator. It also has the advantages of convenience and safety. Industrial ammoni...

Claims

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Application Information

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IPC IPC(8): C25B1/28C25B11/04
CPCC25B11/04C25B1/29Y02P20/129
Inventor 周稳华
Owner 铜陵泰富特种材料有限公司
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