Recovery method of spent catalyst metal components in tail oil
A recovery method and a technology of spent catalysts, which are applied in the directions of chemical instruments and methods, catalyst regeneration/reactivation, physical/chemical process catalysts, etc., can solve the problems of excessive discharge of three wastes, complicated operation process, and high processing cost, so as to avoid emissions, The effect of high economic efficiency and important environmental protection value
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0050] 1) 300 g of RMX tail oil was extracted with 1200 g of toluene at 120° C. for 2 hours, and then the extraction phase and the first metal-containing residue were obtained by filtration, and the toluene in the extraction phase was evaporated to obtain an upgraded oil;
[0051] 2) extracting the first metal-containing residue with toluene at 130° C. for 4 hours (mass ratio is 1:5) to obtain extracted oil and raffinate;
[0052] 3) The raffinate was dried at 140° C. and 0.01 MPa for 4 hours, and then processed by a 100-mesh pulverizer to obtain the second metal-containing residue with a particle size of 100-mesh.
[0053] 4) Repeat the process of steps 1)-3), add 300 g of the accumulated second metal-containing residue (the mass fractions of Mo, Ni and V are 5.2%, 0.4% and 1.2%, respectively) into the roasting furnace, and at 750 ℃, 2000mL / min gas velocity to carry out air roasting for 1h, the flue gas generated during roasting is successively cooled by the first-stage and s...
Embodiment 2
[0059] The waste catalyst metal components in the tail oil are recovered according to the method of Example 1, the difference is that,
[0060] In step 4), 300 g of the second metal-containing residue was added to the roasting furnace, and air roasting was carried out at 800 ° C and a gas velocity of 5000 mL / min for 1 h. Then enter the tail gas treatment device for treatment and discharge, wherein the control temperatures of the first and second stage collection towers are 620 ° C and 300 ° C respectively; Ash A, B and C are obtained in the collecting tower and the second-stage collecting tower respectively, and the weights of the three kinds of ash are 1.5g, 6.6g and 23.6g respectively.
[0061] The mass fraction of Ni in Ash A is 75.3%, the Ni purity is 95.8%, and the Ni recovery rate is 94.1%;
[0062] The mass fraction of V in ash B is 52.5%, the purity of V is 93.7%, and the recovery rate of V is 96.3%;
[0063] The mass fraction of Mo in the ash C was 62.9%, the Mo pur...
Embodiment 3
[0066] The waste catalyst metal components in the tail oil are recovered according to the method of Example 1, the difference is,
[0067] 4) Add 300 g of the second metal-containing residue to the roasting furnace, carry out air roasting at 900 ° C and a gas velocity of 6000 mL / min for 1 h, and the flue gas generated in the roasting passes through the first-stage and second-stage collection towers to cool down step by step. Enter the tail gas treatment device for treatment and discharge, wherein the control temperatures of the first and second stage collection towers are 650 ° C and 320 ° C respectively; Ash A, B and C are obtained in the tower and the second-stage collection tower respectively, and the weights of the three kinds of ash are 1.5g, 6.8g and 25.1g respectively.
[0068] The mass fraction of Ni in Ash A is 74.9%, the Ni purity is 95.2%, and the Ni recovery rate is 93.6%;
[0069] The mass fraction of V in ash B is 50.9%, the purity of V is 91.0%, and the recover...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More