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GTO catalyst used for fluidized bed and preparation method of GTO catalyst

A catalyst and fluidized bed technology, applied in the field of GTO catalyst and its preparation, can solve the problems of rapid reaction heat removal, easy to fly temperature, and low temperature olefin weight selectivity that is not easy to fly

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by this invention is that the Fischer-Tropsch synthesis reaction exists in the prior art because the Fischer-Tropsch synthesis reaction is a strong exothermic reaction. For the problem of low weight selectivity, a new GTO catalyst for fluidized bed is provided. When the catalyst is used in the reaction of Fischer-Tropsch synthesis of low-carbon olefins, it has the advantages of fast reaction heat removal, not easy to overheat and high weight selectivity of low-carbon olefins. The advantages

Method used

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Examples

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Effect test

Embodiment 1

[0033] Get 606.03g iron nitrate nonahydrate and dissolve in water to make solution I; 2.23g zinc nitrate hexahydrate and 313.3g gallium nitrate nonahydrate are dissolved in water to make a solution, and then the solution is mixed with 6% by weight of ammonia solution of 700g Flow precipitation, filter the precipitation, and wash repeatedly with deionized water to obtain fresh and clean mixed oxide II of zinc oxide and gallium oxide, mix solution I and mixed oxide II to obtain slurry III; 5.31g weight content 40% ZrO 2 The sol, 0.35g calcium nitrate tetrahydrate and 0.042g potassium hydroxide are added in the slurry III, mixed and beaten, and the pH value of the slurry is adjusted to 5 with ammonia water to obtain the slurry IV (solid content 15%). The material is spray-dried and formed, the inlet temperature of the sprayer is 380°C, the outlet temperature is 230°C, and then roasted at a roasting temperature of 750°C and a roasting time of 6 hours to obtain an iron-based Fische...

Embodiment 2

[0036] Get 606.03g iron nitrate nonahydrate and dissolve in water to make solution I; 892.0g zinc nitrate hexahydrate and 3.13g gallium nitrate nonahydrate are dissolved in water to make solution, then this solution is mixed with 6% by weight of ammonia solution of 1860g Flow precipitation, filter the precipitation, and wash repeatedly with deionized water to obtain fresh and clean mixed oxide II of zinc oxide and gallium oxide, mix solution I and mixed oxide II to obtain slurry III; % ZrO 2 Sol and 38.4g magnesium nitrate hexahydrate and 4.20g potassium hydroxide join in the slurry III, mix beating, and the pH value of adjusting slurry with dilute nitric acid is 1 simultaneously, obtains slurry IV (solid content 45%), the The slurry is spray-dried and shaped, the inlet temperature of the sprayer is 200°C, the outlet temperature is 100°C, and then roasted at a roasting temperature of 400°C and a roasting time of 0.15h to obtain an iron-based Fischer-Tropsch synthesis catalyst ...

Embodiment 3

[0039] Get 606.03g iron nitrate nonahydrate and dissolve in water to make solution I; 780.5g zinc nitrate hexahydrate and 4.69g indium nitrate pentahydrate are dissolved in water to make solution, then this solution is mixed with 1620g of 6% by weight ammonia solution Precipitate in parallel flow, filter the precipitate, and wash repeatedly with deionized water to obtain fresh and clean mixed oxide II of zinc oxide and indium oxide, mix solution I and mixed oxide II to obtain slurry III; 40% ZrO 2 The sol and 28.62g strontium nitrate and 1.05g sodium hydroxide are added in the slurry III, mixed and beaten, and the pH value of the slurry is adjusted to 2.3 with dilute nitric acid simultaneously to obtain the slurry IV (solid content 35%), and the slurry Spray drying molding, the inlet temperature of the sprayer is 300°C, the outlet temperature is 180°C, and then roasted, the roasting temperature is 450°C, and the roasting time is 0.5h, to obtain the iron-based Fischer-Tropsch s...

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Abstract

The invention relates to a GTO (direct preparation of low carbon olefin from synthetic gas) catalyst used for a fluidized bed and a preparation method of the GTO catalyst. The problem that in the prior art, since the Fischer-Tropsch synthesis is a strong exothermic reaction, when a fluidized bed is used, heat in a reactor is hard to dissipate, so that the temperature is easy to rise, the catalyst is prone to be inactivated, and the weight selectivity of low-carbon olefin is low is mainly solved. The GTO catalyst comprises, by weight part, a) 10-70 parts of a carrier selected from at least one of a Zr or Ti oxide, and b) 30-90 parts of an active component including, based on an atomic ratio, the following composition having a chemical formula of Fe<100>ABC<c>O<x>, wherein A is selected from one of Zn or Cd, B is elected from one of Ga or In, and C is one of alkaline-earth metals. According to the technical scheme, the problem is well solved. The GTO catalyst can be used for industrial production of low-carbon olefin through the Fischer-Tropsch synthesis.

Description

technical field [0001] The invention relates to a GTO catalyst for a fluidized bed and a preparation method thereof Background technique [0002] With the rapid development of my country's economy, the demand for petroleum resources and its products is increasing day by day. my country's energy is characterized by rich coal, little gas, and oil shortage. Lack of oil resources and insufficient domestic oil supply have become a severe reality for my country's energy development. With the development of the national economy, the contradiction between oil supply and demand will continue to expand, and get rid of the energy structure. The dependence on oil resources has become an urgent problem to be solved. This has just prompted people to actively and diligently develop other alternative energy sources, and the environmental pollution caused by the direct combustion of coal has also been paid more and more attention. The development of the process of converting coal / natural ga...

Claims

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Application Information

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IPC IPC(8): B01J23/825B01J23/80B01J27/043B01J35/08
Inventor 庞颖聪陶跃武宋卫林李剑锋
Owner CHINA PETROLEUM & CHEM CORP
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