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A kind of modified coke oven gas hydrodesulfurization catalyst and preparation method thereof

A technology of coke oven gas and hydrodesulfurization, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc. It can solve the problem of low conversion rate of thiophene and achieve the reaction temperature Low, the effect of improving the conversion rate of thiophene

Active Publication Date: 2022-07-15
NINGBO JINYUANDONG PETROCHEM ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the Fe-Mo / γ-Al doped with V, Cr, Cu and other elements in the prior art 2 o 3 Due to the low conversion rate of thiophene in the hydrogenation catalyst, a modified coke oven gas hydrodesulfurization catalyst and its preparation method are provided

Method used

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  • A kind of modified coke oven gas hydrodesulfurization catalyst and preparation method thereof
  • A kind of modified coke oven gas hydrodesulfurization catalyst and preparation method thereof
  • A kind of modified coke oven gas hydrodesulfurization catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1 FeVMo / γ-Al 2 O 3 preparation

[0066] According to the proportion shown in Table 1, take ammonium molybdate and an appropriate amount of citric acid (adjusted to pH 3-5) and dissolve it in deionized water, add ammonium metavanadate, stir and dissolve, add a certain amount of ferric nitrate, and age the solution for 2- 4h, then dried spherical γ-Al 2 O 3 The carrier was added, impregnated for 10 hours, dried at 120 °C for 2 hours, and calcined at 500 °C for 3 hours to obtain the catalyst FeVMo / γ-Al 2 O 3 . Catalyst FeVMo / γ-Al 2 O 3 The composition is shown in Table 1 below.

[0067] Table 1

[0068]

Embodiment 2

[0069] Example 2 FeCrMo / γ-Al 2 O 3 preparation

[0070] According to the ratio shown in Table 2, dissolve ammonium molybdate and an appropriate amount of citric acid in deionized water, add chromium nitrate, stir and dissolve, add a certain amount of ferric nitrate, age the solution for 2-4 hours, and then dry the spherical γ- Al 2 O 3 The carrier was added, impregnated for 10 hours, dried at 120 °C for 2 hours, and calcined at 500 °C for 3 hours to obtain the catalyst FeCrMo / γ-Al 2 O 3 . Catalyst FeCrMo / γ-Al 2 The composition of O is shown in Table 2 below.

[0071] Table 2

[0072]

Embodiment 3

[0073] Example 3 FeCuMo / γ-Al 2 O 3 preparation

[0074] According to the proportion shown in Table 3, dissolve ammonium molybdate and an appropriate amount of citric acid in deionized water, add copper nitrate, stir and dissolve, add a certain amount of ferric nitrate, age the solution for 2-4 hours, and then dry the spherical γ- Al 2 O 3 The carrier was added, impregnated for 10 hours, dried at 120 °C for 2 hours, and calcined at 500 °C for 3 hours to obtain the catalyst FeCuMo / γ-Al 2 O 3 . Catalyst FeCuMo / γ-Al 2 The composition of O is shown in Table 3 below.

[0075] table 3

[0076]

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Abstract

The invention discloses a modified coke oven gas hydrodesulfurization catalyst and a preparation method thereof. The catalyst includes FeMo catalyst and [DETA]Ac, wherein: in mass percent, the FeMo catalyst includes the following raw materials: Fe 2 O 3 : 2‑10%, MoO 3 : 5‑20%, doping element oxide: 0.1‑5%, balance γ‑Al 2 O 3 ; Described doping element oxide is V 2 O 5 , Cr 2 O 3 Or CuO; the mass ratio of the FeMo catalyst and the [DETA]Ac is (1-3):1. The modified coke oven gas hydrodesulfurization catalyst in the present invention can achieve a thiophene conversion rate of ≥43% at 150-180° C., the reaction temperature is low, and the thiophene conversion rate is significantly improved.

Description

technical field [0001] The invention relates to a modified coke oven gas hydrodesulfurization catalyst and a preparation method thereof. Background technique [0002] In the coking process, coking coal forms coke in the coking chamber, and waste gas is first discharged. The coal tar, ammonia, crude benzene, hydrogen sulfide and hydrogen cyanide obtained from the raw coal gas is cooled, condensed and recovered by various absorbents, namely clean coke oven gas (referred to as coke oven gas). [0003] Hydrogen, methane and carbon monoxide in coke oven gas are all recyclable chemicals. Harmful impurities contained in coke oven gas must be removed before recycling. Impurities are mainly H 2 S, COS, CS 2 , thiophene, thiol, thioether, HCN, NH 3 , naphthalene, benzene, tar, etc. These impurities not only pollute the environment, but also corrode equipment and block pipelines, which can lead to poisoning and deactivation of catalysts and adsorbents, and affect the subsequent r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/887B01J23/885B01J31/02B01J37/08C10K1/34
CPCB01J23/8877B01J23/8878B01J23/885B01J23/002B01J31/0279B01J37/0201B01J37/088C10K1/004C10K1/34B01J2523/00B01J2523/31B01J2523/55B01J2523/68B01J2523/842B01J2523/67B01J2523/17
Inventor 陈嘉梁岑旭江郭利鑫
Owner NINGBO JINYUANDONG PETROCHEM ENG TECH