Harmless environment-friendly treatment device for waste nickel catalyst

The utility model discloses a waste nickel catalyst harmless environment-friendly treatment device which comprises a sulfuric acid head tank, a dissolving kettle, a conversion kettle, a filtering device and a sodium sulfate storage tank, the upper end of the dissolving kettle is respectively connected with a high-purity water conveying pipeline, a sulfuric acid conveying pipeline, a waste nickel adding port, a gas emptying pipeline and a vacuum pipeline, and a stirrer is installed on the upper portion of the dissolving kettle. The bottom of the dissolving kettle is connected with a material conveying pipeline, the upper part of the sulfuric acid head tank is provided with a sulfuric acid conveying pipeline and a gas emptying pipeline, the sulfuric acid head tank is provided with a liquid level meter, the bottom of the sulfuric acid head tank is connected with the sulfuric acid conveying pipeline, and the upper part of the conversion kettle is connected with a material conveying pipeline, a stirrer, a gas reco