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

Methanol catalyst protecting agent and preparation method thereof

A technology of protecting agent and catalyst, applied in the field of methanol catalyst protecting agent and preparation thereof, can solve the problems such as difficulty in removing sulfide and carbonyl compound effectively at the same time and the like

Active Publication Date: 2021-04-13
CHNA ENERGY INVESTMENT CORP LTD +1
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a methanol catalyst protectant and its preparation method in order to overcome the existing problems in the prior art that the sulfide and carbonyl compounds in the synthesis gas are difficult to be effectively removed at the same time.

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
  • Methanol catalyst protecting agent and preparation method thereof
  • Methanol catalyst protecting agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The invention provides a kind of preparation method of methanol catalyst protecting agent, comprising the following steps:

[0017] (1) Prepare a mixed aqueous solution of precursors of copper oxide, zinc oxide, aluminum oxide and calcium oxide, iron oxide and / or manganese oxide, or first prepare a mixed aqueous solution of precursors of copper oxide, zinc oxide and aluminum oxide, and then prepare calcium oxide Mixing an aqueous solution with precursors of iron oxide and / or manganese oxide; configuring an aqueous solution of a precipitating agent;

[0018] (2) Co-precipitate the precursor mixed aqueous solution of copper oxide, zinc oxide, aluminum oxide and calcium oxide, iron oxide and / or manganese oxide with the precipitant aqueous solution, or mix the precursor mixed aqueous solution of copper oxide, zinc oxide and aluminum oxide The aqueous solution mixed with the precursors of calcium oxide, iron oxide and / or manganese oxide and the aqueous solution of the precip...

Embodiment 1

[0031] CuO-ZnO-Al 2 o 3 -CaO-Fe 2 o 3 Preparation of catalyst protection agent: adopt the method of step-by-step co-precipitation, the specific process is: first mix a certain proportion of CuO, ZnO and Al 2 o 3 The precursors of the precursors are dissolved in water together to prepare a mixed solution of Cu, Zn and Al precursors, and then a certain amount of CaO and Fe 2 o 3 The precursor is dissolved in water to prepare a precursor mixed solution containing Ca and Fe, wherein CuO / ZnO (weight ratio)=1 / 1, CuO / Al 2 o 3 (weight ratio) = 2.67 / 1, CuO / CaO (weight ratio) = 20 / 1, CuO / Fe 2 o 3 (weight ratio)=13.3 / 1, and prepare corresponding amount of Na 2 CO 3 and NaHCO 3 The mixed solution of which, Na 2 CO 3 / NaHCO 3 (molar ratio) = 10 / 1, then at 75 ° C, the precursor solution is precipitated in two steps, wherein the precursor solution and Na 2 CO 3 and NaHCO 3 The drop rate of the mixed aqueous solution is matched to control the pH value of the precipitation to ...

Embodiment 2

[0033] CuO-ZnO-Al 2 o 3 -CaO-Fe 2 o 3 The preparation of the catalyst protection agent: adopt the co-precipitation method, the specific process is: first mix a certain ratio of CuO, ZnO, Al 2 o 3 , CaO and Fe 2 o 3 The precursors of the precursors are dissolved in water together to prepare a precursor mixed solution of Cu, Zn, Al, Ca and Fe, wherein CuO / ZnO (weight ratio)=1 / 4, CuO / Al 2 o 3 (weight ratio) = 1 / 1.33, CuO / CaO (weight ratio) = 15 / 1, CuO / Fe 2 o 3 (weight ratio)=3.75 / 1, and prepare corresponding amount of Na 2 CO 3 and NaHCO 3 The mixed solution of which, Na 2 CO 3 / NaHCO 3 (molar ratio) = 5 / 1, then at 70 ° C, the precursor solution is precipitated in two steps, wherein the precursor solution and Na 2 CO 3 and NaHCO 3 The drop rate of the mixed aqueous solution is matched to control the pH value of the precipitation to be 7-9. After the precipitation is completed, it is aged at 70°C for 2 hours, then dried at 120°C for 12 hours, and roasted at 280°C ...

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 the field of catalyst protection agents, and discloses a methanol catalyst protection agent and a preparation method thereof. The methanol catalyst protection agent includes copper oxide, zinc oxide, aluminum oxide and calcium oxide, and iron oxide and / or manganese oxide; wherein , based on the total weight of the protective agent, the weight percentage of each component is: copper oxide 3-65%, zinc oxide 3-65%, aluminum oxide 5-25%, calcium oxide 1-5%, iron oxide and / or manganese oxide 0.05‑4%. The invention also includes a preparation method of the methanol catalyst protecting agent. Under the synergistic effect of various metal oxides, the protective agent of the present invention simultaneously removes toxic substances such as sulfides and carbonyls in the synthesis gas after washing with low-temperature methanol, thereby protecting the methanol catalyst and prolonging its use life.

Description

technical field [0001] The invention relates to the field of catalyst protection agents, in particular to a methanol catalyst protection agent and a preparation method thereof. Background technique [0002] Methanol is a potential clean fuel that can replace gasoline, and it is also an important chemical raw material. In recent years, with the development of the national economy, China's methanol consumption has grown rapidly, and the corresponding output has continued to increase. The raw material gas used for synthesizing methanol is mainly the synthesis gas obtained by pyrolysis of coal. The synthesis gas will also contain a certain amount of sulfur, chlorine, and a small amount of carbonyl iron, nickel carbonyl and other toxic substances after the low-temperature methanol washing process. At present, the catalysts for synthesizing methanol are mainly Cu-Zn-Al catalysts, which are easily poisoned by reactions with sulfur elements or metal carbonyls, thereby affecting the...

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): C01B3/56
CPCC01B3/56
Inventor 刘媛张玉龙孔劼琛徐晓颖张凡邱正璞杨盼盼孙琦缪平
Owner CHNA ENERGY INVESTMENT CORP LTD