Cellular integral sulfur-tolerant methanation catalyst and preparation method thereof

A technology of sulfur-resistant methanation and honeycomb shape, which is applied to the honeycomb-shaped monolithic sulfur-resistant methanation catalyst and its preparation. In the field of preparation of the catalyst, it can solve the problems that the synthesis gas cannot pass through, the reaction cannot be carried out, and the pressure drop is large.

Active Publication Date: 2013-06-05
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the raw material gas has not been purified by traditional processes (deashing, detarring), and the dust and tar contained in it will cause the following problems: (1) Dust will block the pores of the catalyst, resulting in excessive pressure drop, resulting in synthesis The gas cannot pass through the catalyst bed; (2) The catalyst is pulverized due to continuous wear and tear during

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] (a) Preparation of honeycomb monolithic support

[0093] Weigh 610g γ-Al respectively 2 o 3 Powder, 250g light MgO (density 3.58g / cm 3- ), 1170g diatomaceous earth (SiO 2 Content is equal to 80wt.%), 182g ammonium bicarbonate, 73g pseudo-boehmite, 18g sodium stearate and 36g glass fiber are placed in mixer and fully stirred, mix uniformly, then slowly add in above-mentioned powdery mixture 350g of acetic acid aqueous solution with a concentration of 10wt.%, and then gradually add an appropriate amount of deionized water, and continue stirring for 2-8 hours to make it into a plastic dough.

[0094] The plastic dough is placed in a honeycomb ceramic strong extruder and extruded to obtain a honeycomb shaped product with a length of 100mm, an end surface size of 50×50mm, and a honeycomb hole of a square with a side length of 1.3mm.

[0095] The obtained honeycomb shaped product was dried at 120° C. for 12 hours, and then calcined in air at 550° C. for 6 hours to obtain ...

Embodiment 2

[0104] In embodiment 1, ammonium bicarbonate is replaced with urea in step (a), and all the other operations are unchanged, namely the cost example. The physical properties of the catalyst obtained in this example, the catalytic performance test results are shown in Table 1.

Embodiment 3

[0106] In Example 1, in step (a), the pseudo-boehmite is replaced by safflower powder, and the rest of the operations remain unchanged, that is, the cost example. The properties of the catalyst obtained in this example, the catalytic performance test results are shown in Table 1.

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PUM

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Abstract

The invention provides a cellular integral sulfur-tolerant methanation catalyst. The cellular integral sulfur-tolerant methanation catalyst comprises 1, a cellular integral carrier which is prepared from a porous ceramic material and has multiple channels passing through the cellular integral carrier, and 2 active components which comprise a molybdenum oxide as a main active component, a cobalt oxide as a first assistant, and at least one of a zirconium oxide, a cerium oxide and a lanthanum oxide as a second assistant. The invention also discloses a preparation method of the cellular integral sulfur-tolerant methanation catalyst.

Description

field of invention [0001] The invention relates to the field of methanation catalysts and to a preparation method of the catalysts. Specifically, the present invention relates to a honeycomb monolithic sulfur-tolerant methanation catalyst and a preparation method thereof. Background technique [0002] Coal catalytic gasification is a highly energy-efficient and environmentally friendly coal gasification process. The synthesis gas produced by catalytic gasification of coal steam generally contains H 2 , CO, CO 2 , CH 4 , H 2 S and unreacted H 2 O, where H 2 and CO to be further methanated to CH 4 . The methanation and coal catalytic gasification are integrated into the same reactor, and the synthesis gas is directly passed into the methanation catalyst bed without cooling down, thus avoiding the energy loss caused by the gas cooling first and then heating up. The feed gas produced by catalytic coal gasification contains H 2 S and other organic sulfur, and H in gas 2...

Claims

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Application Information

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IPC IPC(8): B01J23/887B01J23/882B01J35/04C07C9/04C07C1/04
Inventor 毕继诚王会芳张荣
Owner ENN SCI & TECH DEV
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