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Sulfur-tolerant shift catalyst and preparation method thereof

A sulfur-resistant conversion and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, heterogeneous catalyst chemical elements, etc., can solve the problems of low activity and non-existence of waste agents

Active Publication Date: 2021-08-10
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of waste agent has low activity and contains a certain amount of heavy metals, mainly Ni, V, Fe, Cu, etc. How to deal with it has always been one of the topics that people in the industry pay attention to.
At present, a more effective method is to recycle part of the waste agent to reduce the amount of disposal. The methods mainly include recycling through magnetic separation technology, using it as a cement substitute material, as a flame retardant and microbial growth inhibitor, and recycling. Crystallization into catalysts, etc., but there is no relevant research and report on the field of cobalt-molybdenum-based sulfur-tolerant shift catalysts

Method used

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  • Sulfur-tolerant shift catalyst and preparation method thereof
  • Sulfur-tolerant shift catalyst and preparation method thereof
  • Sulfur-tolerant shift catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] First, the waste FCC agent is roasted at 650°C for 5 hours, and then crushed through a 200-mesh sieve.

[0057] Dissolve 8.6g of ammonium molybdate in 40.0ml of deionized water to obtain molybdenum-containing solution A; dissolve 11.7g of cobalt nitrate in 30.0ml of deionized water; add 3.0g of citric acid and 1.0g of oxalic acid into the above solution and stir to dissolve , to obtain solution B containing cobalt.

[0058] Weigh 80.0g of the treated FCC waste agent, 8.6g of pseudoboehmite, 2.0g of magnesium oxide, 2.9g of metatitanic acid, and 3.0g of scallop powder, mix them evenly, add solution A, and knead evenly; then add solution B, Knead, shape, dry naturally, bake at 530°C for 3h, and then cool down to room temperature naturally. That is, the finished sulfur-tolerant shift catalyst C-1 was obtained. Its strength and strength stability are shown in Table 1.

Embodiment 2

[0060] First, the waste FCC agent is roasted at 800°C for 2 hours, and then crushed through a 180-mesh sieve.

[0061] Dissolve 9.8g of ammonium molybdate with 40.0ml of deionized water to obtain molybdenum-containing solution A; dissolve 7.8g of cobalt nitrate with 35.0ml of deionized water; then add 2.0g of sucrose to the above solution and stir to dissolve to obtain Cobalt solution B.

[0062] Weigh 70.0g of processed FCC waste agent, 10.0g of alumina, 4.0g of magnesia, 8.6g of metatitanic acid, 2.0g of starch and mix evenly, add solution A, knead evenly; then add solution B, knead, shape, Dry in the air, bake at 550°C for 2h, and then cool down to room temperature naturally. That is, the finished sulfur-tolerant shift catalyst C-2 was obtained. Its strength and strength stability are shown in Table 1.

Embodiment 3

[0064] First, the waste FCC agent is roasted at 550°C for 10 hours, and then crushed through a 220-mesh sieve.

[0065] Dissolve 8.0g of ammonium molybdate with 40.0ml of deionized water to obtain molybdenum-containing solution A; dissolve 13.3g of cobalt acetate with 35.0ml of deionized water; then add 5.0g of citric acid to the above solution, stir and dissolve to obtain Solution B containing cobalt.

[0066] Weigh 65.0g of the processed FCC waste agent, 20.0g of pseudo-boehmite, 8.0g of magnesium oxide, 2.0g of titanium oxide, and 4.0g of Tianqing powder, mix evenly, add solution A, and knead evenly; then add solution B, knead , Molded, dried naturally, baked at 400°C for 3h, and then cooled down to room temperature naturally. That is, the finished sulfur-tolerant shift catalyst C-3 was obtained. Its strength and strength stability are shown in Table 1.

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Abstract

The invention relates to a sulfur-tolerant shift catalyst and a preparation method thereof. The carrier is composed of oxides of Mg, Al, Si, Ti and Ba, wherein the oxides of Al, Si and Ba are derived from FCC waste agent. The invention effectively utilizes the FCC waste agent, reduces the catalyst production cost, relieves the huge pressure on the ecological environment caused by the FCC waste agent, and has good economic and environmental benefits. The catalyst has high strength, good structure and activity stability, low loss rate of active components, and is suitable for high pressure, high space velocity, high water-gas ratio conditions, and has a long service life.

Description

technical field [0001] The invention relates to a sulfur-tolerant shift catalyst and a preparation method thereof. Background technique [0002] Catalytic cracking (FCC) catalyst in refinery is the most widely used catalyst in oil refining process. The annual consumption in my country exceeds 100kt, and about 1 / 3 of these catalysts run from the chimney to the atmosphere with the flue gas (natural run loss ). In addition to natural running loss, heavy metal pollution or non-volatile carbon-like substances condensed into coke and deposited on the catalyst may reduce the activity of the catalyst or even deactivate it. Therefore, it is necessary to periodically discharge a part of the catalyst. This discharged catalyst is called waste agent. [0003] With the increase of FCC scale, the waste dose is gradually increasing, which is not only an economic issue, but also an environmental issue. This type of waste agent has low activity and contains a certain amount of heavy metals,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/887C01B3/16
CPCB01J23/002B01J23/8872B01J2523/00C01B3/16C01B2203/0283C01B2203/1082B01J2523/22B01J2523/31B01J2523/41B01J2523/47B01J2523/25B01J2523/68B01J2523/845Y02P20/52
Inventor 白志敏余汉涛田兆明赵庆鲁齐焕东王昊姜建波薛红霞李文柱
Owner CHINA PETROLEUM & CHEM CORP
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