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Multifunction sulfur recovery catalyst and its preparing method

A sulfur recovery and catalyst technology, applied in chemical instruments and methods, sulfur preparation/purification, physical/chemical process catalysts, etc., can solve problems such as low activity of organic sulfur hydrolysis, poor poisoning performance, and poor mechanical strength of catalysts

Inactive Publication Date: 2004-07-14
SINOPEC QILU CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] The object of the present invention is to provide a 2 "Poisoning performance and de-"leakage of O 2 "Protection ability, multi-functional sulfur recovery catalyst with high organosulfur hydrolysis activity and Claus activity and its preparation method are used to overcome and solve common Al 2 o 3 Catalyst resistant to "leaking O 2 "Poor poisoning performance, easy to sulfate poisoning and Al containing iron compounds 2 o 3 The base catalyst has low activity in hydrolysis of organosulfur and TiO 2 Defects and problems such as poor mechanical strength of the catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] After drying at 120° C. for 4 hours and pulverizing to 180 mesh, 100 g of industrial metatitanic acid dry powder, 100 g of industrial pseudoboehmite aluminum hydroxide dry powder and 6 g of turmeric powder were mixed evenly. According to the 3% metering element iron of finished catalyst weight, take by weighing 24.3g FeSO 4 ·7H 2 O and 6g HNO 3 Dissolve in 70ml distilled water with HNO 3 After adjusting the pH value of the solution to 4-5, add it to the above-mentioned powder and stir, knead with a twin-screw extruder for 0.5h, extrude it with a Φ4.5mm orifice plate, and place it at room temperature for 12h to dry. Dry at 120°C for 2 hours and calcined at 400°C for 4 hours to obtain catalyst sample A. The chemical composition of its active components is: TiO 2 54.2% (m / m), Al 2 o 3 45.8% (m / m).

[0041] FeSO 4 The measured iron-containing compound is 7.8%, and the specific surface area of ​​the sample is measured to be 218m 2 / g, crushing strength 152N / cm, me...

Embodiment 2

[0043] After drying at 120°C for 4 hours, 100 g of industrial metatitanic acid dry powder and 100 g of industrial pseudo-boehmite aluminum hydroxide dry powder were crushed to 180 meshes, and mixed with 6 g of turmeric powder. Weigh 6g concentrated HNO 3 Dissolve in 85ml of distilled water, add to the above powder and stir, knead with a twin-screw extruder for 0.5h, extrude with a Φ4.5mm orifice plate, place at room temperature for 12h to dry, and dry at 120°C for 2h Roast at 400℃×4h to get TiO 2 -Al 2 o 3 Carrier, its chemical composition is: TiO 2 54.2% (m / m), Al 2 o 3 45.8% (m / m); Then measure elemental iron according to 3% of finished catalyst weight, weigh 24.3g FeSO 4 ·7H 2 O was dissolved in 25ml of distilled water, with HNO 3 Adjust the pH value of the solution between 4-5, and dry the above-mentioned TiO with a particle size of 20 mesh to 40 mesh at 120°C 2 -Al 2 o 3 158.4g of the carrier was immersed in it, stirred evenly, left at room temperature for 12...

Embodiment 3

[0045] According to embodiment 2 conditions, prepare clover-shaped and four-leaf clover-shaped catalyst samples B respectively 1 and B 2 , The crushing strength measured is 178N / cm and 191N / cm respectively, and the mechanical strength after the boiling test is 159N / cm and 174N / cm respectively.

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Abstract

The present invention is multifunctional sulfur recovering catalyst with high deoxygenation activity, high organic sulfur hydrolyzing activity and high H2S-SO2 Clausius reaction activity and its preparation process. The catalyst has active components including titania 40-60 wt%, active alumina 35-50 wt% and ferrous compound 5-10 wt%. The catalyst has the advantages of great specific surface area, high mechanical strength, high oxygen leakage poisoning tolerance, high deoxygenation activity, high organic sulfur hydrolyzing activity and high H2S-SO2 Clausius reaction activity. It may be used alone or via matching with common alumina catalyst.

Description

technical field [0001] The invention relates to a sulfur recovery catalyst and a preparation method thereof, in particular to a sulfur recovery catalyst with high deoxygenation 2 activity and higher organosulfur hydrolysis activity and higher H 2 S and SO 2 A multifunctional sulfur recovery catalyst with Claus reaction activity and its preparation method. Background technique [0002] Large amounts of H are produced during oil and gas processing 2 S gas, in order to protect the environment and recover elemental sulfur, the industry generally adopts the Claus process to treat the gas containing H 2 The acid gas of S, its reaction equation is as follows: [0003] <chemistry num="001"> <chem file="02151549_cml001.xml" / > < / chemistry> (1) [0004] <chemistry num="002"> <chem file="02151549_cml002.xml" / > < / chemistry> (2) [0005] <chemistry num="003"> <chem file="02151549_cml003.xml" / >...

Claims

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Application Information

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IPC IPC(8): B01D53/48B01D53/86B01J23/835B01J27/053C01B17/04
Inventor 唐昭峥张文郁胡文宾达建文解秀清郝国阳谭永放
Owner SINOPEC QILU CO
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