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voso 4 Preparation method of sulfuric acid solution, voso 4 Electrolyte

A sulfuric acid solution and solution technology, which is applied in circuits, fuel cells, electrical components, etc., can solve the problems of demanding raw materials and high production costs, and achieve the effects of reducing raw material costs, reducing environmental hazards, and avoiding lengthy and cumbersome operations

Active Publication Date: 2021-12-07
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a kind of VOSO 4 Preparation method of sulfuric acid solution, VOSO 4 Electrolyte, to solve the preparation VOSO in the prior art 4 The electrolyte has relatively strict requirements on raw materials and high production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The waste residue oil hydrogenation catalyst obtained from the waste vacuum residue oil of Sinopec Guangzhou Branch has a vanadium metal content of 5.4%, a nickel, molybdenum, and aluminum metal content of 3.5%, 0.9%, and 25.4%, respectively, and other metal contents are relatively low. few.

[0039] Use 1.2mol / L dilute sulfuric acid solution to leaching waste residue oil hydrogenation catalyst, wherein the solid-to-liquid ratio of waste residue oil hydrogenation catalyst to the dilute sulfuric acid solution is 1:6, and the conditions for leaching treatment are: 90°C leaching for 4 hours in a reaction kettle with a gas absorbing device, and filtering to obtain the leachate and residue, the residue contains 96.1% of vanadium, 93.4% of nickel, 45.5% of molybdenum and 94.4% of aluminum relative to the leachate of the original waste residue, Vanadium exists in the valence state of V(IV) in the leach solution. The metals in the residue are recovered by catalytic activation....

Embodiment 2

[0041] The difference between embodiment 2 and embodiment 1 is that

[0042] A 2mol / L dilute sulfuric acid solution is used to leach the waste residue oil hydrogenation catalyst, wherein the solid-to-liquid ratio of the waste residue oil hydrogenation catalyst to the dilute sulfuric acid solution is 1:4. Waste slag leach solution contains 96.3% vanadium, 94.5% nickel, 46.3% molybdenum and 96.5% aluminum, VOSO 4 Ni in the sulfuric acid solution, Mo, the total content of Al is less than 0.001g / L, reaches 96.2% with respect to former waste catalyst vanadium comprehensive recovery rate, this VOSO 4 The sulfuric acid solution was distilled under reduced pressure to obtain the electrolyte solution used in the all-vanadium redox flow battery.

Embodiment 3

[0044] The difference between embodiment 3 and embodiment 1 is that

[0045] Adopt 0.5mol / L dilute sulfuric acid solution to carry out leaching treatment to waste residue oil hydrogenation catalyst, wherein, the solid-to-liquid ratio of waste residue oil hydrogenation catalyst and this dilute sulfuric acid solution is 1:10, in the residue after leaching treatment relative to The original waste slag leaching solution contains 92.9% vanadium, 95.2% nickel, 44.7% molybdenum and 93.2% aluminum, and VOSO is produced 4 In the sulfuric acid solution, the total content of Ni, Mo, and Al is less than 0.001g / L, and the comprehensive recovery rate of vanadium relative to the original spent catalyst reaches 96.2%. 4 The sulfuric acid solution was distilled under reduced pressure to obtain the electrolyte solution used in the all-vanadium redox flow battery.

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Abstract

The invention provides a VOSO 4 Preparation method of sulfuric acid solution, VOSO 4 electrolyte. The preparation method includes: step S1, using the first dilute sulfuric acid solution to leaching the waste residue oil hydrogenation catalyst to obtain leachate and residue; step S2, using the first vanadium extractant to extract the leachate for the first time to obtain a Extracting the organic phase and the primary water phase; step S3, using the second dilute sulfuric acid solution to carry out the first stripping of the primary extraction organic phase, to obtain the vanadium-containing water phase and the first regenerated organic phase; step S4, using the second vanadium to extract The vanadium-containing aqueous phase is extracted for the second time to obtain a secondary extraction organic phase and a secondary aqueous phase; and in step S5, a third dilute sulfuric acid solution is used to carry out a second stripping of the secondary extraction organic phase to obtain VOSO 4 sulfuric acid solution and a second regenerated organic phase. The above method directly uses the waste residue oil hydrogenation catalyst as the vanadium raw material, which reduces the cost and simplifies the purification and preparation process.

Description

technical field [0001] The invention relates to the technical field of preparation of vanadyl sulfate electrolyte, in particular to a VOSO 4 Preparation method of sulfuric acid solution, VOSO 4 electrolyte. Background technique [0002] Catalysts used in petroleum refining to purify and upgrade various fuels become deactivated over time and exit the process as spent catalyst. In many refineries, due to the extensive use of solid catalysts in the hydrotreating process, especially in the hydrodemetallization reaction of residual oil, the released metals (Ni and V) are easy to cover the surface of the catalyst in the form of sulfide phase, resulting in The orifice of the catalyst is blocked and coked, and the activity decreases, resulting in irreversible deactivation of the catalyst. In recent years, with the increase of oil production, the unutilized spent catalyst has increased significantly. Since the residual oil hydrogenation catalyst contains various toxic chemical co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/18H01M8/02
CPCH01M8/02H01M8/188Y02E60/50
Inventor 康金星王亚运宋磊于传兵王鑫仇云飞吕东郭素红刘志国王传龙
Owner CHINA ENFI ENGINEERING CORPORATION
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