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Potassium salt extraction system

A technology of potassium salt and potassium ion, applied in the field of solid waste resource utilization, can solve problems such as being unable to exert high potassium and low chlorine, and achieve the effect of improving comprehensive treatment efficiency and reducing the quality of potassium salt

Pending Publication Date: 2019-02-22
CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, biomass incineration fly ash is often resold as a solid waste generated by a biomass incineration system at a low price, and cannot give full play to its characteristics of high potassium, low chlorine and sulfur

Method used

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  • Potassium salt extraction system

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specific Embodiment

[0020] To optimize the above scheme, see figure 1 , the first separation assembly includes a first leaching tank 10 for immersing the sintering head ash 52, and a first-stage pressure filtration for pressure filtering the solution in the first leaching tank 10 to obtain a press filtrate machine and a first filter press tank 11 for storing the press filter liquid obtained by the first stage filter press, and the first filter press tank 11 is connected to the first storage tank 12 . In this embodiment, after the sintered die ash 52 is soaked in the die ash leaching tank, potassium ions and chloride ions can be leached, and then it is subjected to pressure filtration treatment by the first stage filter press to obtain The press-filtrate containing potassium ion and chloride ion solution is stored in the first storage tank 12 to be transported to the compounding device 3 to be mixed and precipitated with the solution in the second storage tank 22 . Of course, in addition to using...

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Abstract

The invention relates to the technical field of solid waste resource utilization, and provides a potassium salt extraction system. The system comprises a first separation component, a second separation component, a first storage pool for storing a solution prepared from ions obtained by the first separation component, a second storage pool for storing a solution prepared from ions obtained by thesecond separation component, and a mixing device for mixing and precipitating the solutions in the first storage pool and the second storage pool, wherein the mixing device is provided with an air inlet for charging reagents and a liquid outlet for discharging the solution after reagent precipitation, and the liquid outlet is connected with a discharging device capable of producing potassium saltproducts. Potassium ions in biomass incineration fly ash and potassium ions in sintering head ash are combined by simultaneously treating the biomass incineration fly ash and the sintering head ash, so that on one hand, the amount of potassium ions is increased, and cation impurities are prevented from being excessively introduced to reduce the quality of potassium salts; and on the other hand, the waste resources such as biomass incineration fly ash are rationally utilized to improve the comprehensive treatment efficiency.

Description

technical field [0001] The invention relates to the technical field of utilization of solid waste resources, in particular to a potassium salt extraction system. Background technique [0002] Sintering machine head ash is a kind of solid waste produced in the sintering process of the steel industry. Since it contains a certain amount of potassium, it can be considered to extract potassium salt by washing with water, evaporating and crystallizing. Potassium elements in sintering head ash generally exist in the form of potassium chloride, potassium oxide, and potassium sulfate. Usually, the molar number of chloride ions and sulfate ions is greater than that of potassium ions, and the amount of potassium ions is small and difficult to separate. Therefore, When removing impurities and extracting salt through a wet process, the cations are usually removed by adding chemicals, and the most commonly used chemicals are salts with sodium cations. This virtually increases the ratio o...

Claims

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Application Information

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IPC IPC(8): C01D3/14C01D5/16
CPCC01D3/14C01D5/16C01P2006/80
Inventor 陈堃樊飞勇朱飞赵圆苏俊明邵雁郭华军
Owner CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY