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A Treatment Method for Incompletely Regenerated Flue Gas

A complete regeneration, flue gas technology, applied in gas treatment, separation methods, chemical instruments and methods, etc., can solve the problem of low catalytic conversion activity, and achieve the effect of reducing NOx emission and improving catalytic conversion activity

Active Publication Date: 2022-03-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the regeneration process of the prior art, especially in the incomplete regeneration process, NH 3 The defect that the catalytic conversion activity of reduced nitrogen compounds is low, the invention provides a treatment method for incompletely regenerated flue gas

Method used

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  • A Treatment Method for Incompletely Regenerated Flue Gas
  • A Treatment Method for Incompletely Regenerated Flue Gas
  • A Treatment Method for Incompletely Regenerated Flue Gas

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preparation example Construction

[0055] The present invention has no special limitation on the preparation method of the regular structure catalyst, as long as the regular structure catalyst with the above-mentioned composition and structural characteristics can be obtained, it can be used in the present invention. Preferably, the preparation method of the regular structure catalyst includes:

[0056] Option One:

[0057] (1) mixing and beating the matrix source, the first metal element precursor, the second metal element precursor and water to obtain the active component coating slurry;

[0058] (2) Coating the structured structure carrier with the active component coating slurry and drying and first roasting to obtain the active component coating distributed on the inner surface and / or outer surface of the regular structure carrier;

[0059] or

[0060] Option II:

[0061] a) mixing and beating the matrix source, the first metal element precursor and water to obtain the first slurry;

[0062] b) coating ...

Embodiment 1

[0101] (1) 262g of pseudo-boehmite was added into 1.42kg of deionized water for beating and dispersion, then 23.8mL of hydrochloric acid was added for acidification for 15min to obtain the bauxite colloid, and ferric nitrate (calculated as Fe) 2 o 3 Count) 6g, cobalt nitrate (as Co 2 o 3 Count) 6g, KMnO 4 (as MnO) 10g, RuCl with a mass content of 12.5g / L in terms of metal elements 3 Add 9.6mL of the solution into 350mL of water and stir until it is fully dissolved, add bauxite colloid to it, and stir for 15min to obtain the first solution; add 10g of MgO to 30g of water, stir for 10min, then add it to the first solution, and stir for 20min to obtain the active Component coating slurries;

[0102] (2) The active component coating slurry obtained in step (1) is used to coat the cordierite honeycomb carrier (the carrier pore density is 400 holes / square inch, the opening rate of the cross section is 70%, and the shape of the hole is a square), after Dry (100°C, 4h), then tran...

Embodiment 2

[0107] (1) 253g of pseudo-boehmite was added into 1.37kg of deionized water for beating and dispersion, then 22.9mL of hydrochloric acid was added for acidification for 15min to obtain the bauxite colloid, and ferric nitrate (calculated as Fe) 2 o 3 Count) 10g, cobalt nitrate (as Co 2 o 3 Count) 6g, KMnO 4 (as MnO) 6g, RuCl with a mass content of 12.5g / L in terms of metal elements 3 Add 8.8mL of the solution into 350mL of water and stir until it is fully dissolved, add bauxite colloid to it, and stir for 15min to obtain the first solution; add 16g of MgO to 48g of water, stir for 10min, then add it to the first solution, and stir for 20min to obtain the active Component coating slurries;

[0108] (2) The active component coating slurry obtained in step (1) is used to coat the cordierite honeycomb carrier (the carrier pore density is 400 holes / square inch, the opening rate of the cross section is 70%, and the shape of the hole is a square), after Dry (100°C, 4h), then tran...

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Abstract

The invention relates to the field of catalytic cracking, and discloses a treatment method for incompletely regenerated flue gas, comprising: contacting incompletely regenerated flue gas with a catalyst with a regular structure, and the catalyst with a regular structure includes: a carrier with a regular structure and a carrier distributed on a carrier with a regular structure The active component coating on the inner surface and / or the outer surface, the content of the active component coating is 10-50% by weight, the active component coating contains an active metal component and a matrix, the active metal component It includes a first metal element and a second metal element, the first metal element includes Fe and Co, and the weight ratio of Fe and Co is 1: (0.05-20) in terms of oxide, and the second metal element is selected from From at least one of the noble metal elements; the contacting is carried out in the CO incinerator and / or the flue gas channel provided in front of the CO incinerator. By adopting the method provided by the invention, the catalytic conversion activity of the reduced nitrogen compounds in the incompletely regenerated flue gas is high.

Description

technical field [0001] The invention relates to the field of catalytic cracking, in particular to a treatment method for incompletely regenerated flue gas. Background technique [0002] The continuous rise of crude oil prices has greatly increased the processing costs of refineries. On the one hand, refineries can reduce costs by purchasing low-priced low-quality oil; on the other hand, they can increase economic benefits through deep processing of heavy oil. As an important means of heavy oil processing in refineries, catalytic cracking plays a pivotal role in refineries. It is not only the main means of heavy oil balance and clean fuel production in refineries, but also the focus of energy saving and efficiency enhancement in refineries. Catalyst cracking is a fast catalytic reaction system in which the catalyst is deactivated quickly. Solving the problem of catalyst regeneration has always been the main line of development of catalytic cracking. [0003] In the fluidized...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/56B01D53/58B01J27/22
CPCB01D53/8628B01D53/8634B01J27/22B01J23/002B01D2258/0283B01J2523/00B01J2523/22B01J2523/31B01J2523/842B01J2523/845B01J2523/23Y02C20/20
Inventor 姜秋桥宋海涛田辉平林伟严加松孙言王鹏张久顺达志坚
Owner CHINA PETROLEUM & CHEM CORP
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