CO sulfur resistant transformation catalyst and its preparation method

A sulfur-resistant shift and catalyst technology, applied in chemical instruments and methods, inorganic chemistry, bulk chemical production, etc., can solve the problems of low low temperature activity, poor dispersion performance of active components and additives, and high strength, and achieve optimization. Pore ​​structure, ensuring active stability, improving strength and stability

Inactive Publication Date: 2003-07-16
QILU PETRO CHEM - SINOPEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has high strength but poor dispersion of active components and additives, so low temperature activity is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation of embodiment 1 catalyst

[0027] Listed in table 1 are industrial Co-Mo sulfur-resistant shift catalyst QCS-01 (Qilu Petrochemical Company Research Institute production, carried out large-scale industrial application at home) and the composition of the catalyst prepared by the present invention:

[0028]

catalyst

Chemical composition, %(m / m)

Al 2 o 3

TiO 2

MgO

cement

NiO

MnO 2

CoO

MoO 3

La 2 o 3

Ce 2 o 3

QCS-01

45.7

11.0

21.4

4.5

3.5

8.9

0.25

0.25

A

45.5

11.5

22.3

0.5

3.6

8.7

B

39.5

11.8

22.1

3

3

3.7

12

C

38.1

12.3

21.9

5.9

3

1

3.5

10

D

33.1

11.8

22.4

14

3.4

8.7

...

Embodiment 2

[0040] Embodiment 2 catalyst performance evaluation

[0041] Catalyst activity tests were carried out on the normal pressure micro-reaction evaluation device and the pressurized particle size evaluation device respectively. Among them, the evaluation conditions of the atmospheric pressure micro-reaction evaluation device are:

[0042] Catalyst loading: 0.3g Catalyst particle size: 40-60 mesh

[0043] h 2 O / dry gas: 1.0 (molar ratio) Dry gas space velocity: 10000h -1

[0044] h 2 S concentration: 0.3~0.4% (v / v) Vulcanization temperature: 250℃

[0045] Vulcanization time: 4 hours

[0046] The evaluation conditions of the pressurized raw particle size evaluation device are:

[0047] Catalyst loading: 50mlφ4mmα-Al 2 o 3 Ball 1:1 dilution

[0048] Catalyst particle size: φ4×4mm H 2 O / dry gas: 1.2 (molar ratio)

[0049] h 2 S concentration: 0.2~0.4% (v / v)

[0050] Vulcanization temperature: 250℃ Vulcanization time: 20hr

[0051] Vulcanization space velocity: 2000h-1 V...

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Abstract

An isothermal S-resistant conversion catalyst used for the isothermal conversion process where CO reacts on water vapor to generate H2 and CO2 for preparing synthetic ammonia gas, H2, city gas and synthetic carbonyl gas is prepared from the composite carrier containing TiO2, MgO, Al2O3 and cement and non-alkali metal as promoter through improved kneading and dipping. Its advantages are high activity, high mechanical strength, adaptability to high space velocity, good resistance to hydration, and no environmental pollution.

Description

technical field [0001] The invention relates to a sulfur-resistant shift catalyst for producing hydrogen and carbon dioxide by reacting carbon monoxide and water vapor and a preparation method thereof. Background technique [0002] As we all know, in the manufacturing process of hydrogen-rich gas, CO conversion plays a decisive role. The conversion reaction of carbon monoxide and water vapor to produce hydrogen and carbon dioxide requires a catalyst. The early shift catalysts were mainly based on Fe-Cr and Cu-Zn systems, which are the so-called "medium temperature shift" and "low temperature shift". But these catalysts are only active under sulfur-free or low-sulfur (medium shift) conditions. In the late 1960s, in order to convert heavy oil, coal or residual oil as the raw material of high-sulfur syngas, Co-Mo series sulfur-tolerant shift catalysts appeared. Since the 1980s, the development of heavy oil, especially coal gasification technology has successfully promoted th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/12C01B3/16
CPCY02P20/52
Inventor 张新堂李欣毛鹏生孙海燕纵秋云田兆明陈依萍郭建学余汉涛白志敏
Owner QILU PETRO CHEM - SINOPEC
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