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Method for dismutation electrolytic production of hydrogen, copper, lead, zinc, acid and alkali-chloride by elemental sulfur

An elemental sulfur, elemental technology, applied in the field of hydrometallurgy, can solve problems such as the need for time

Inactive Publication Date: 2009-02-18
贾建立
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the energy consumption of the advanced polymer solid electrolyte SPE electrolysis process can be reduced to 3.0kw h m under the standard state -3 , but it will take time to apply the technology to large-scale industrial production

Method used

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  • Method for dismutation electrolytic production of hydrogen, copper, lead, zinc, acid and alkali-chloride by elemental sulfur

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Embodiment Construction

[0037] The condition of elemental sulfur normal temperature phase transfer catalyzed disproportionation is that the molar ratio is 1 sodium citrate and ammonium citrate saturated aqueous solution, with the supersaturated kerosene organic phase of dissolving sulfur, with quaternary ammonium salt trioctyl methyl ammonium hydroxide ( OCl 3 MeN + h - ) is a phase transfer catalyst. Under the condition of full stirring at normal temperature and pressure of 50-90°C, elemental sulfur disproportionates to form sulfide or polysulfide and thiosulfate into the water phase. The mass ratio of phase transfer catalyst to sulfur and kerosene Choose 1: 3~5: 15~30, and control the pH range of the end point from 3 to 5. The disproportionation reaction can be expressed as:

[0038] 6OH - +4S→2S 2- +S 2 o 3 2- +3H 2 o

[0039] Disproportionation reactions that also occur include:

[0040] 4S+3H 2 O→S 2 o 3 2- +2H 2 S+2H +

[0041] 3S+60H - → SO 3 2- +2S - +3H 2 o

[0042] 3...

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Abstract

The invention relates to a method for preparing H, Cu, Pb, Zn, acid and chlor-alkali through the disproportionation and electrolyzing of S; the catalyzing, disproportionation and electrolyzing of the element S at a normal temperature to prepare H is circulated; sulfurous acid is electrolyzed to prepare H; the NaHSO4, Na2SO4 and the H2SO4 converted by decomposition water, the hydrochloric acid, HCl and SO3 manufactured by the pyrolyzing of solid NaCl as well as concentrated H2SO4, Na2SO4 are disproportionated and reduced with the molten salt element S to generate SO2 and NaS; membrane electrolysis is carried out on Na2S to prepare H2, NaOH and regenerate S; the NaOH is concentrated by a fuel battery; alkali is disproportionated and catalyzed by the element S to decompose sulphide ores like a galena, a sphalerite, a copper pyrites, an iron pyrites, and the like. The sulphide ore is decomposed by the alkali; an infusion membrane is electrolyzed to prepare H2, regenerate NaOH and recover S; the anode membranes of CuCl and Na2S are electrolyzed in the same bath by an anode membrane to prepare Cu powder and regenerate S; the cathode membranes are electrolyzed to prepare Cu2O and H2; CuCl is electrolyzed with wasted copper in the same bath and the wasted copper is regenerated.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy. Especially with electrolyzed water, chlor-alkali, non-ferrous metal electrolysis, sulfide ore and industrial harmful gas H 2 S, SO 2 It is related to the comprehensive utilization of copper, lead and zinc scrap metals and other production methods. Background technique [0002] The known pyrometallurgy and hydrometallurgy of chlor-alkali, non-ferrous metal sulfide ore, pyrite acid production, etc. are industries with high investment, high consumption, and high pollution. The recycling of copper, aluminum, and zinc waste non-ferrous metals by pyrometallurgy has caused secondary pollution. secondary pollution and energy consumption. Facing the global energy supply crisis and the accompanying deterioration of the global environment, all countries are under the pressure of energy crisis and energy conservation and emission reduction, and are striving to find new and renewable energy that ca...

Claims

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Application Information

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IPC IPC(8): C25B1/02C25B1/14C25B1/26C25C1/12C25C1/16C25C1/18C22B3/04
CPCY02P10/20
Inventor 贾建立
Owner 贾建立
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