Microspherical catalyst for preparing oil and paraffin from syngas and preparation method thereof

A catalyst and synthesis gas technology, applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, recovery/refining of mineral waxes, etc. Good, high conversion rate, simple and continuous synthesis process

Active Publication Date: 2017-01-18
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a microspherical catalyst for preparing oil and paraffin from syngas and its preparation method, so as to solve the problem that the preparation conditions of the catalyst in the prior art are so harsh and the cost is so high that it cannot be applied on a large scale question

Method used

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  • Microspherical catalyst for preparing oil and paraffin from syngas and preparation method thereof
  • Microspherical catalyst for preparing oil and paraffin from syngas and preparation method thereof
  • Microspherical catalyst for preparing oil and paraffin from syngas and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Weigh 50 kg of ferric nitrate nonahydrate, then add corresponding amount of copper nitrate and sodium metavanadate, add deionized water to dissolve, and obtain a mixed salt solution, in which the weight ratio Fe:V:Cu=100:0.39:3.6 , the molar concentration of iron ions in the mixed salt solution is 0.57mol / L.

[0043] Preheat the mixed salt solution to 65°C, dissolve 30kg of sodium carbonate and add deionized water to prepare a sodium carbonate solution with a concentration of 0.8mol / L as a precipitant, preheat the sodium carbonate solution to 70°C, and mix the mixed salt solution with The sodium carbonate solution is pumped into the reactor by a feed pump, and co-currently precipitated to obtain a mixed salt precipitation slurry. The temperature of the mixed salt precipitation slurry is kept at 68° C. and the pH value is always 6.7±0.5 throughout the co-current precipitation process.

[0044] The slurry is not aged, separated by a filter press, washed with deionized wa...

Embodiment 2

[0048] Weigh 40 kg of ferric nitrate nonahydrate, add corresponding amount of copper nitrate and sodium metavanadate, add deionized water to dissolve, and obtain mixed salt solution, the weight ratio of elements in the mixed salt solution is Fe:V:Cu=100:0.3 : 2.0, wherein the molar concentration of iron ions in the mixed salt solution is 0.09mol / L.

[0049] Preheat the mixed salt solution to 30°C, take 20kg of sodium carbonate to prepare a sodium carbonate solution with a concentration of 1.8mol / L as a precipitant, preheat the sodium carbonate solution to 30°C, and use the mixed salt solution and sodium carbonate solution The feed pump is pumped into the reactor, and the co-current precipitation is obtained to obtain the mixed salt precipitation slurry. The temperature of the mixed salt precipitation slurry is kept at 30° C. and the pH value is always 5.8 throughout the co-current precipitation process.

[0050]The mixed salt precipitation slurry was aged at 30°C for 5 hours,...

Embodiment 3

[0054] Weigh 70kg of ferric nitrate nonahydrate, add the corresponding amount of copper nitrate and sodium vanadate, add deionized water to dissolve, and obtain a mixed salt solution. The weight ratio of elements in the mixed salt solution is Fe:V:Cu=100:1.0 : 5.0, prepared as a mixed salt solution with an iron ion concentration of 1.42mol / L. Preheat the mixed salt solution to 60°C, dissolve 70kg of ammonium carbonate and add deionized water to prepare an ammonium carbonate solution with a concentration of 0.5mol / L as a precipitant, preheat the ammonium carbonate solution to 50°C, and mix the mixed salt solution with The ammonium carbonate solution is pumped into the reactor by a feed pump, and co-currently precipitated to obtain a mixed salt precipitation slurry. The temperature of the mixed salt precipitation slurry is kept at 60° C. and the pH value is always 8.6 throughout the co-current precipitation process.

[0055] The precipitated slurry was aged at 60° C. for 0.5 ho...

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Abstract

The invention discloses a microspheric catalyst for preparing oils and paraffin from synthesis gas and a preparation method thereof. The catalyst comprises the following components of Fe, V, Cu, K, Ag and SiO2 according to the weight ratio of 100:(0.1-1.4):(0.8-7):(1.0-8):(0.1-2.5):(5-35), wherein the elements Cu, K and Ag exist in the form of oxide, Fe exists in the form of Fe2O3, and V exists in the form of V2O5. The catalyst has the good degree of sphericity, large specific surface area, high strength, and good activity and product selectivity, is applicable to joint production of gasoline, diesel and high quality paraffin in large-scale fischer-tropsch synthesis of a slurry bed, and has the advantages of high CO conversion rate, low CH4 selectivity and reasonable HC product distribution when being used in fischer-tropsch synthesis. The preparation method has continuous technological processes, and is applicable to large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a microspherical catalyst for preparing oil and paraffin from syngas and a preparation method thereof. Background technique [0002] Fischer-Tropsch synthesis is based on synthesis gas (CO+H 2 ) is a process of synthesizing oil and wax products as raw materials under catalyst and appropriate reaction conditions, which is one of the indirect coal liquefaction technologies. It was developed by German chemists F. Fischer and H. Tropsch in 1923, so it is referred to as Fischer-Tropsch synthesis or F-T synthesis technology. In 1955, Sasol Corporation of South Africa built the SASOL-1 small-scale Fischer-Tropsch synthetic oil plant, realizing the large-scale industrialization of coal-based synthetic liquid fuels. With the increasing oil price, FT synthesis technology is becoming more and more important. my country's energy structure has more coal and less oil, so Fischer-Tropsch s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J35/08C10G2/00C10G73/00
Inventor 王鹏公磊林泉吕毅军武鹏门卓武石玉林
Owner CHNA ENERGY INVESTMENT CORP LTD
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