Comprehensive utilization system of spent catalyst

A waste catalyst and solid-liquid mixture technology, which is applied in the direction of vanadium compounds, molybdenum compounds, alkali metal compounds, etc., can solve the problems of high cost, low purity of molybdenum and vanadium, and achieve the effect of low process cost

Pending Publication Date: 2018-02-23
DALIAN DONGTAI RESOURCE RENEWABLE
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  • Application Information

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Problems solved by technology

However, the purity of molybdenum and vanadium obtained through the current separation process is not high, and

Method used

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  • Comprehensive utilization system of spent catalyst
  • Comprehensive utilization system of spent catalyst
  • Comprehensive utilization system of spent catalyst

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] Such as Figure 1 ~ Figure 3 As shown, a waste catalyst comprehensive utilization system includes a deoiling furnace 1 for deoiling waste catalysts in residual oil hydrogenation, a rotary kiln 2 for sodium roasting the deoiled material obtained through the deoiling furnace 1, A four-stage countercurrent device 3 for leaching the sodiu...

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Abstract

The invention discloses a comprehensive utilization system of a spent catalyst. The comprehensive utilization system of the spent catalyst is characterized by comprising a deoiling furnace, a rotary kiln, a four-stage countercurrent device, a stirring tank I, a plate-and-frame filter I, a precipitation tank I, a plate-and-frame filter II, a stirring tank II, a centrifuge I, ion exchange resin, anextraction device, a back extraction device, a precipitation tank II, a centrifuge II and a washing tank. The comprehensive utilization system of the spent catalyst is low in process cost, green and environment-friendly, and capable of effectively recycling useful components in the residual oil hydrotreating spent catalyst to obtain industrial steam, nickel-aluminum powder, ammonium metavanadate,high-purity molybdic acid, anhydrous sodium sulfate, distilled water and the like, wherein the high-purity molybdic acid can be obtained without repeated separation processes, and the purity of the high-purity molybdic acid can reach 99. 9%.

Description

technical field [0001] The invention relates to a waste catalyst comprehensive utilization system. Background technique [0002] Spent catalysts are recognized environmental pollutants and must be converted into harmless substances before entering the environment. The waste catalyst for hydrogenation of residual oil contains rare metals such as molybdenum and vanadium, which have high economic value. However, because molybdenum and vanadium have many chemical commonalities, it is difficult to separate them. [0003] At present, the existing separation process includes: 1) using alkali-added roasting process, the auxiliary raw materials added are Na2CO3, NaOH, NaCl or Na2SO4, etc., the roasted product is leached with hot water, and the molybdenum and vanadium in the solution are in the form of soluble sodium salt into the solution, after which ammonium salt precipitation vanadium and molybdenum extraction are carried out; 2) use acid leaching or directly use acid to strengt...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B1/02C22B21/00C22B23/00C01G31/00C01G39/00C01D5/00
CPCC22B1/02C22B7/006C22B21/003C22B23/0407C01D5/00C01G31/00C01G39/003C01P2006/80Y02P10/20
Inventor 梁昌雄侯连春迟洪建刘忠军
Owner DALIAN DONGTAI RESOURCE RENEWABLE
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