Method for producing potassium sulphate fertilizer magnesium metal PVC and liquid chlorine hydrochloric acid through carnallite

A carnallite, metal magnesium technology, applied in chemical instruments and methods, potash fertilizer, chlorine production, etc., to save resources, protect the environment, achieve zero emissions, and reduce waste and exhaust emissions.

Inactive Publication Date: 2016-11-09
古舜起
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] 1. I have studied and solved the problem of comprehensive utilization of carnallite, the raw material for potassium salt production, and invented the method of dissolving carnallite with water...

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  • Method for producing potassium sulphate fertilizer magnesium metal PVC and liquid chlorine hydrochloric acid through carnallite
  • Method for producing potassium sulphate fertilizer magnesium metal PVC and liquid chlorine hydrochloric acid through carnallite
  • Method for producing potassium sulphate fertilizer magnesium metal PVC and liquid chlorine hydrochloric acid through carnallite

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Embodiment Construction

[0011] The present invention is related to the "method for comprehensive utilization of natural magnesium sulfate in potassium salt residue to squeeze out and use up" (separate patent application), "method for producing soda ash by using mirabilite in potassium salt residue", "ammonia for producing soda ash" Alkali method" and "calcium carbide method for PVC production" are used together, and the plant is reasonably planned and built next to the potash enterprise near the salt lake like the pit mouth power generation. Each factory scientifically utilizes magnesium chloride, magnesium sulfate, sodium sulfate, sodium chloride, calcium chloride and other resources in the potash residue (accurately speaking, the residue of carnallite, which is the raw material for potash) Routes and processes for the production of sulfuric acid, soda ash, chlorine-free potassium sulfate fertilizer, PVC, metal magnesium, hydrochloric acid, and liquid chlorine, and finally, comprehensive utilization ...

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Abstract

The invention discloses a method for producing potassium sulphate fertilizer magnesium metal PVC and liquid chlorine hydrochloric acid through carnallite. According to the technical route, firstly, the carnallite is dissolved with water and then is crystallized, potassium chloride and magnesium chloride hexahydrate contained in the carnallite are separated and purified; then, the magnesium chloride hexahydrate is electrolyzed through the improved Norsk Hydro process to prepare magnesium metal and chlorine; thirdly, a potassium chloride solution and concentrated sulfuric acid are subjected to a chemical reaction under a heated condition to prepare potassium sulfate fertilizer and hydrogen chloride; finally, secondary products including chloride and hydrogen chloride are used for producing liquid chlorine PVC or hydrochloric acid; the sylvite production raw material carnallite can be comprehensively utilized fully. A method for producing sulfuric acid sodium carbonate through natural sulfate (magnesium sulfate and mirabilite) in sylvite residues, a solvay process for producing sodium carbonate and a calcium carbide method for producing PVC are commonly applied, a plant is reasonably planned and established beside a salt lake, scientific cooperative production is achieved, resources can be comprehensively and circularly utilized, energy is saved, emission is reduced, consumption is reduced, and the environment protection is achieved.

Description

technical field [0001] The invention relates to the fields of chemical industry and metallurgy, specifically the field of organic chemical industry (polyvinyl chloride), the field of inorganic chemical industry (sulfuric acid, hydrochloric acid) and the field of light metal smelting (metal magnesium). Background technique [0002] At present, my country's production of chlorine-free potassium sulfate fertilizer (also known as potassium salt or potash fertilizer) is to use salt lake brine (such as Qinghai Salt Lake Potassium Fertilizer, Xinjiang Xinyatai Chemical Industry) or brine under the dry salt lake (such as Guotou Luo Potassium) to dry in salt fields. The production raw material carnallite (ingredients are potassium chloride, magnesium chloride hexahydrate, chemical formula KclMgcl26H2O) is obtained first, and then reacted with Glauber's salt to produce potassium sulfate fertilizer. Every ton of potassium sulfate fertilizer produced (accurately speaking: every ton of po...

Claims

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Application Information

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IPC IPC(8): C05D1/02C01B17/76C01B7/01C01D7/18C25C3/02C25B1/26C08F114/06
CPCY02P20/129Y02P20/20C05D1/02C01B7/01C01B17/76C01D7/18C08F114/06C25B1/26C25C3/02
Inventor 古舜起
Owner 古舜起
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