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: 2018-05-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This scheme can only be applied to the preparation of catalyst by kneading

Method used

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  • Method for recycling hydrogenation catalyst waste
  • Method for recycling hydrogenation catalyst waste
  • Method for recycling hydrogenation catalyst waste

Examples

Experimental program
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Example Embodiment

[0037] Example 1

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

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

Example Embodiment

[0041] Example 2

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

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

Example Embodiment

[0045] Example 3

[0046] The hydrogenation catalyst waste (containing 22.5 wt% MoO 3 and 3.1 wt% NiO, the balance is alumina) after grinding and pulverizing, passing through a 180-mesh sieve and weighing 20 g. Add to 25g of water to disperse, and then add a mixed acid solution of 30% nitric acid 40g, 85% phosphoric acid 14.1g, citric acid 4g and 35g 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. The temperature was then raised to 90° C. and then kept at a constant temperature for 60 min. After cooling to room temperature, 4 g of ethylenediamine was added to obtain the final waste material sol slurry.

[0047] After mixing 230 g of alumina powder (75% dry basis) and 4 g of succulent powder, the above-mentioned waste sol slurry was added, and 138 g of water was added, followed by rolling and kneading to obtain a plastic body and then extruded. Then, it was dried at 110°C for 4 hours and calcined at 8...

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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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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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