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A method for recycling hydrogenation catalyst waste

A technology for hydrogenation catalyst and waste material, which is applied in the field of recycling and reuse of hydrogenation catalyst waste material, can solve problems such as affecting the physicochemical properties of the catalyst, and achieve the effects of efficient recovery, high activity and reduced content

Active Publication Date: 2019-10-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme can only be applied to the preparation of catalyst by kneading method, and it will affect the physicochemical properties of the catalyst

Method used

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  • A method for recycling hydrogenation catalyst waste
  • A method for recycling hydrogenation catalyst waste
  • A method for recycling hydrogenation catalyst waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Hydrogenation catalyst waste (containing 18.7 wt%MoO 3 and 2.8 wt% CoO, the balance being alumina) and weighed 18g after passing through a 200-mesh sieve. Add it to 18g of water for dispersion, then add 15g of 30% nitric acid, 10.6g of 85% phosphoric acid, 5.4g of malic acid and 50g of mixed acid solution of water. At this time, the mass ratio of nitric acid-phosphoric acid-organic acid-waste material-water is 0.25:0.5:0.3:1:4.45. Then the temperature was raised to 85° C., and then kept at the temperature for 60 minutes. After cooling to room temperature, 2 g of isopropylamine was added to obtain the final waste material sol slurry.

[0039] After mixing 185g of alumina powder (dry basis 75%) and 3.75g of turnip powder evenly, add the above-mentioned waste material sol slurry, add 105g of water, roll and knead to obtain a plastic body and extrude. Then, it was dried at 110°C for 4 hours, and calcined at 700°C for 3 hours to obtain carrier S1.

[0040] According to th...

Embodiment 2

[0042] Hydrogenation catalyst waste (containing 12 wt% MoO 3 and 2.1 wt% NiO, the balance being alumina) and weighed 15g after passing through a 200-mesh sieve. Add it to 20g of water for dispersion, then add 15g of 30% nitric acid, 10.5g of 85% phosphoric acid, 7.5g of tartaric acid and 65g of mixed acid solution of water. At this time, the mass ratio of nitric acid-phosphoric acid-organic acid-waste material-water is 0.3:0.6:0.5:1:6.8. Then the temperature was raised to 90° C., and then kept at the temperature for 60 minutes. After cooling to room temperature, 3 g of monoethanolamine was added to obtain the final waste material sol slurry.

[0043] After mixing 140g of alumina powder (dry basis 75%) and 4g of scallop powder evenly, add the above-mentioned waste material sol slurry, add 108g of water, roll and knead to obtain a plastic body and extrude. Then, it was dried at 110° C. for 4 hours and calcined at 750° C. for 3 hours to obtain carrier S2.

[0044] According to...

Embodiment 3

[0046] Hydrogenation catalyst waste (containing 22.5 wt% MoO 3 and 3.1 wt% NiO, the balance being alumina) and weighed 20g after passing through a 180-mesh sieve. Add to 25g water for dispersion, then add 40g of 30% nitric acid, 14.1g of 85% phosphoric acid, 4g of citric acid and 35g of mixed acid solution of water. At this time, the mass ratio of nitric acid-phosphoric acid-organic acid-waste material-water is 0.6:0.6:0.2:1:4.5. Then heat up to 90°C and keep the temperature for 60 minutes, then add 4g of ethylenediamine after cooling to room temperature to obtain the final waste material sol slurry.

[0047] After mixing 230g of alumina powder (dry basis 75%) and 4g of scallop powder evenly, add the above-mentioned waste material sol slurry, add 138g of water, roll and knead to obtain a plastic body and extrude. Then, it was dried at 110° C. for 4 hours and calcined at 800° C. for 3 hours to obtain carrier S3.

[0048] According to the conventional preparation method of im...

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Abstract

The invention discloses a method for recycling hydrogenation catalyst waste. The method comprises the following steps: (1) alumina support waste and / or the hydrogenation catalyst waste are / is smashedand sieved, powder obtained after sieving is pulped, slurry with solid content being 15wt%-55wt% is obtained, a nitric acid-phosphoric acid-organic acid mixed solution is added with stirring, the obtained solution is heated to 65-100 DEG C, kept at the temperature for 30-90 min and cooled to room temperature, then organic amine is added, the solution is mixed uniformly, and sol slurry of the wasteis obtained; (2) the sol slurry of the waste in step (1), alumina powder and an extrusion aid are mixed uniformly, then mixed kneading, forming, drying and roasting are performed, and an alumina support is obtained; (3) an active component is supported on the alumina support, and a hydrogenation catalyst is obtained. With adoption of the method, the hydrogenation catalyst waste can be recycled effectively, wastewater and waste residues are not produced, pollution to the environment is avoided, and the catalyst prepared with the method has higher catalytic activity.

Description

technical field [0001] The invention relates to a recycling method for hydrogenation catalyst waste materials. Background technique [0002] As the world's crude oil production is becoming more and more heavy, and the demand for clean oil products is increasing today, in the process of producing clean oil products, the hydrodesulfurization process technology of petroleum fractions plays an increasingly important role. The demand for hydrogen catalysts is also increasing. [0003] Usually, the carrier of the hydrogenation catalyst is activated alumina, and the metal components are non-noble metals. Generally, the metals of Group VIB and / or Group VIII are the active components. The metals of Group VIB are generally Mo and W, and the metals of Group VIII are generally Co, Ni. [0004] During the preparation of hydroprocessing catalysts, residues and wastes are generated in the form of raw materials, intermediate process products and catalyst residues. Because industrial wast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/882B01J38/02B01J38/04B01J38/48B01J38/60B01J38/62B01J38/64C10G45/08
Inventor 孙进郭蓉周勇杨成敏段为宇姚运海丁莉刘丽
Owner CHINA PETROLEUM & CHEM CORP
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