Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of isothermal sulfur-tolerant shift catalyst and preparation method thereof

A sulfur-resistant transformation and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, heterogeneous catalyst chemical elements, etc., can solve problems such as alkali metal loss

Active Publication Date: 2020-03-10
青岛联信催化材料有限公司
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, the addition of alkali metal additives is the most effective means to improve the low-temperature activity of catalysts, but alkali metals are inevitably lost during use.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of isothermal sulfur-tolerant shift catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 200 grams of pseudo-boehmite and add KNO 3 50g, add 150ml water and mix well, dry at 120°C and roast at 550°C for 3 hours to prepare alkaline compound additive, take 50g pseudo-boehmite, 100g magnesia alumina spinel, alkaline compound additive Mix 20 grams evenly, add 10 grams of Sesbania powder, knead with 10% magnesium nitrate solution, extrude and calcinate at 550°C for 3 hours to prepare a carrier. Take 100 grams of the carrier, mix 12 grams of ammonium tetramolybdate and 9 grams of cobalt nitrate into a co-immersion solution, impregnate the carrier with an equal volume of the solution, and dry and / or roast to obtain a catalyst. The catalyst number is C-1. Its alkali metal loss rate is shown in Table 1.

Embodiment 2

[0025] Take 200 grams of pseudo-boehmite and add NaNO 3 80g, add 150ml of water and mix well, dry at 120℃ and roast at 550℃ for 3 hours to prepare alkaline compound additives, take 50 grams of pseudo-boehmite, 100 grams of magnesia alumina spinel, alkaline compound additives 20 grams are mixed uniformly, 10 grams of sesbania powder is added, kneaded with 10% magnesium nitrate solution, extruded and calcined at 550°C for 3 hours to prepare a carrier. Take 100 grams of the carrier, mix 12 grams of ammonium tetramolybdate and 9 grams of cobalt nitrate into a co-immersion solution, impregnate the carrier with an equal volume of the solution, and dry and / or roast to obtain a catalyst. The catalyst number is C-2. The performance comparison is shown in Table 1.

Embodiment 3

[0027] Take 200 grams of pseudo-boehmite and add KNO 3 50g, add 150ml of water and mix evenly, dry at 120℃ and roast at 550℃ for 3 hours to prepare alkaline compound additives, take 50 grams of pseudo-boehmite, 100 grams of magnesia alumina spinel, alkaline compound additives 30 grams are mixed uniformly, 10 grams of Sesbania powder is added, kneaded with 10% magnesium nitrate solution, extruded and calcined at 550°C for 3 hours to prepare a carrier. Take 100 grams of the carrier, mix 12 grams of ammonium tetramolybdate and 9 grams of cobalt nitrate into a co-leaching solution, impregnate the carrier with an equal volume of the solution, and dry and / or roast to obtain a catalyst. The catalyst number is C-3. The performance comparison is shown in Table 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an isothermal sulfur-tolerant shift catalyst and a preparation method thereof. The catalyst utilizes magnesia-alumina spinel as a carrier, comprises 0.2 to 20% of Co as an active component on the basis of CoO and 1 to 30% of Mo as an active component on the basis of MoO3 and contains an alkali metal compound additive. The preparation method of the catalyst is an impregnation method. The alkali metal compound additive produces alkali metal store effects. In the catalyst use, the alkali metal loss is remarkably reduced and catalyst activity at a low temperature and catalyst stability are improved.

Description

Technical field [0001] The invention relates to an isothermal sulfur tolerant shift catalyst and a preparation method thereof, in particular to an isothermal sulfur tolerant shift catalyst with low alkali metal loss rate and a preparation method thereof. Background technique [0002] The isothermal sulfur-tolerant shift process has the advantages of low reaction temperature and uniform temperature distribution in the bed, simpler and more flexible production control and operation, and can effectively avoid methanation side reactions under lower water-gas ratio conditions. Widely used in new coal chemical plants. Compared with the traditional adiabatic reaction process, the isothermal shift reactor has the following advantages: (1) The temperature of the reactor is low and the temperature distribution in the bed tends to be consistent, which is more conducive to the balance of the reaction, so it can maximize the performance of the catalyst. Performance; (2) Using steam pressure ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/887
CPCB01J23/002B01J23/8872B01J2523/00B01J2523/13B01J2523/22B01J2523/31B01J2523/68B01J2523/845B01J2523/12
Inventor 纵秋云刘博男高辉古黎明肖杰飞梅丽伟
Owner 青岛联信催化材料有限公司