Sulfur-tolerance deoxidation catalyst and preparation and use thereof

A sulfur-resistant deoxidation catalyst and a technology for sulfur deoxidation catalyst, which are applied in the field of sulfur-resistant deoxidation catalyst and its preparation, can solve the problems of coke addition, high labor intensity for slagging, high catalytic deoxidation treatment cost, high catalyst price, etc., and achieve easy operation. , the price drop, the effect of easy automatic control

Inactive Publication Date: 2008-11-12
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the catalyst is expensive, and coalbed methane contains sulfide, and sulfur has a poisonous effect on precious metals, which will cause catalyst deactivation. Therefore, desulfurization must be carried out before deoxidation, and then deoxidation reaction, which increases the cost of deoxidation. Resulting in higher cost of catalyt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The spherical sulfur-resistant deoxidation catalyst of this embodiment is composed of 20% active components and 80% porous carrier, that is, 20% copper oxide, 40% magnesium oxide and 40% titanium oxide. name doc1.

[0041] The preparation method of the spherical sulfur-resistant deoxidation catalyst of the present embodiment is:

[0042] (1) Mix 18g cuprous oxide (equivalent to 20g cupric oxide) with 40g magnesium oxide and 40g titanium oxide;

[0043] (2) The mixture in step (1) is formed by ball rolling, dried at 120°C for 1-2 hours, and calcined at 400-500°C for 4-5 hours to obtain a spherical sulfur-resistant deoxidation catalyst.

Embodiment 2

[0045] The sheet-shaped sulfur-tolerant deoxidation catalyst of this embodiment consists of 40% active components and 60% carrier. Mix 58g of ferrous carbonate (equivalent to 40g of iron oxide), 10g of zirconia, 30g of alumina and 20g of diatomaceous earth, press into tablets, dry at 120°C for 1-2 hours, and bake at 400-500°C for 4-4 hours. After 5 hours, a sheet-shaped sulfur-resistant deoxidation catalyst named doc2 can be prepared.

Embodiment 3

[0047] The bar-shaped sulfur-tolerant deoxidation catalyst of this embodiment consists of 70% active components and 30% carrier. Mix 42g basic copper carbonate (equivalent to 30g copper oxide), 40g ferric oxide, and 30g zinc oxide evenly, extrude, dry at 120°C for 1-2 hours, and bake at 400-500°C for 4-5 hours , the strip-shaped sulfur-resistant deoxidation catalyst can be obtained, named doc3.

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Abstract

The invention discloses a sulfur-tolerant deoxidizing catalyst, preparation method and application thereof. The catalyst of the invention is composed of active components and porous carriers, the active components are one or more of compound of iron and/or copper, the porous carriers are selected from one or more of aluminium oxide, titanium oxide, zirconium oxide, zinc oxide, magnesium oxide, calcium oxide, silicon dioxide, aluminophosphate molecular sieves, A type molecular sieves, X type molecular sieves, Y type molecular sieves, mordenite, ZSM-5 zeolite, kieselguhr, kaoline, natural clay, aluminum silicate and magnesium silicate. Based on the oxide content, the active components loading amount is 1-95% by weight, the rest are porous carriers. The catalyst of the invention has definite sulfur-tolerant performance, is suitable for deoxidation treatment of coal seam gas with oxygen content of 3-6% (V/V), and can deoxidize the coal seam gas to make the oxygen content less than 0.5%.

Description

technical field [0001] The invention relates to a catalyst, in particular to a sulfur-resistant deoxidation catalyst, its preparation method and its application in oxygen-containing coal bed gas deoxidation. Background technique [0002] Coalbed methane exists in large quantities in coal seams, and is an unconventional natural gas; it is one of the main causes of underground accidents in coal mines. In fact, coalbed methane is a new energy with high calorific value and no pollution. It can be used as fuel for power generation, process fuel, chemical raw material and residential fuel. my country emits about 30 billion cubic meters of coal-bed methane into the atmosphere every year, causing huge environmental pressure and waste of resources. Reasonable and comprehensive utilization of coalbed methane can make up for my country's energy shortage. At the same time, the recovery and utilization of coalbed methane can also help to protect the environment. The greenhouse effect o...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J23/745B01J29/10B01J29/42B01D53/14C10L3/06
Inventor 陈耀壮曾健廖炯马磊姚松柏赵英
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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