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Preparation process of asymmetric structure pre-oxidized metal filter material for gas turbine

An asymmetric structure and gas turbine technology, applied in gas turbine devices, mechanical equipment, filtration and separation, etc., can solve the problems of photocatalytic performance degradation, poor stability, high energy consumption, etc., to avoid free or volatilized intermediate products, and increase reactants The effect of concentration, environmental protection and economic benefits

Active Publication Date: 2016-09-14
江苏华强新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The study found that the filter element installed in the S-Zorb device has small porosity, high working pressure difference, easy clogging, rapid flow rate attenuation, resulting in frequent backflushing and short life, which directly affects the benefits of the enterprise; using the existing When the filter is running in the device, when the oil intake is 135-154t / h, the pressure difference is between 19-24KPa; the minimum oil intake is 135.12t / h, the minimum pressure difference is 19.55KPa, the maximum The oil volume is 153.78t / h, and the highest pressure difference is 24.12KPa
[0003] Currently on the market nano TiO 2 The product is mainly nano TiO 2 Powder dispersion system, most of these systems have poor stability and greatly reduced photocatalytic performance due to the use of various polymer organic dispersion stabilizers for surface modification
More importantly, TiO 2 The light absorption band is narrow, and the band gap energy Eg≈3.2Ev of anatase can only generate electron-hole pairs (e - -h + ), which mainly uses ultraviolet light below 387.5nm, and this part of light radiates to the ground only accounts for about 4% of the total light radiation; therefore, artificial light sources are currently used, and the energy consumption is relatively high

Method used

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Examples

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Effect test

Embodiment 1

[0032] The preparation process of a gas turbine with an asymmetric structure pre-oxidized metal filter material provided in this embodiment comprises the following specific steps:

[0033] Preparation of perovskite type substance AB 1-x C x o3 powder, and degreasing treatment in a vacuum furnace at a temperature of 450 ° C, the perovskite type substance AB 1-x C x o 3 The value of the doping ratio x in the medium is 0, wherein the element A is one of Sr, La, Nd, Gd, Ca, Cd, and Pb;

[0034] Element B is one of Zr, Ti, V, Cr, Mn, Fe, Co, and its specific preparation steps are:

[0035] The nitrates of metal elements A and B are used as precursors to dissolve in water, and the molar ratio of the nitrates of metal elements A and B is M A = M B , to obtain a mixed salt solution, firstly dried at 120°C for 8 hours, and then calcined at 560°C for 2 hours to obtain the perovskite-type substance AB 1-x o 3 powder;

[0036] Coat the composite adsorption material on the met...

Embodiment 2

[0041] The preparation process of a gas turbine with an asymmetric structure pre-oxidized metal filter material provided in this embodiment comprises the following specific steps:

[0042] Preparation of perovskite type substance AB 1-x C x o 3 powder, and degreasing treatment in a vacuum furnace at a temperature of 550 ° C, the perovskite type substance AB 1-x C x o 3 The value of the middle doping ratio x is 1, wherein the element B is one of Zr, Ti, V, Cr, Mn, Fe, Co;

[0043] Element C is one of Y, Ga, Cu, and its specific preparation steps are:

[0044] The nitrates of metal elements A and C are used as precursors to dissolve in water, and the molar ratio of nitrates of metal elements A and C is M A = M C , to obtain a mixed salt solution, which was first dried at 110°C for 6 hours, and then calcined at 650°C for 3 hours to obtain the perovskite-type substance AC x o 3 powder;

[0045] Coat the composite adsorption material on the metal mesh substrate, put i...

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Abstract

The invention discloses a preparation method of an asymmetric-structure pre-oxidized metal filter material for a gas turbine. The preparation method includes preparing perovskite-type substance Ab1-xCxO3 powder, degreasing the powder in a vacuum furnace, coating a metal net base material with a composite adsorption material, putting the metal net base material into the vacuum furnace, sintering the metal net base material at the temperature of 1000-1600 DEG C for 10-30 hours to obtain a composite support layer, performing ball milling on the perovskite-type substance to obtain sizing agent, coating the composite support layer with the sizing agent, drying the composite support layer and sintering the same at the temperature at 900-1500 DEG C, taking out the composite support layer after cooling to obtain a semi-finished asymmetric-structure pre-oxidized metal filter material, rolling the prepared semi-finished filter material to be tubular by a forming machine, and welding a center seam of the tubular filter material by an argon arc welding machine or plasma welding machine to obtain the asymmetric-structure pre-oxidized metal filter material. The prepared asymmetric-structure pre-oxidized metal filter material for the gas turbine has the advantages of low filtration resistance, large filtration flux, high porosity and high pressure bearing capacity.

Description

technical field [0001] The invention relates to the technical field of preparation of filter materials for gas turbines, in particular to a preparation process for asymmetric structure pre-oxidized metal filter materials for gas turbines. Background technique [0002] The study found that the filter element installed in the S-Zorb device has small porosity, high working pressure difference, easy clogging, rapid flow rate attenuation, resulting in frequent backflushing and short life, which directly affects the benefits of the enterprise; using the existing When the filter is running in the device, when the oil intake is 135-154t / h, the pressure difference is between 19-24KPa; the minimum oil intake is 135.12t / h, the minimum pressure difference is 19.55KPa, the maximum The oil volume is 153.78t / h, and the highest pressure difference is 24.12KPa. [0003] Currently on the market nano TiO 2 The product is mainly nano TiO 2 Powder dispersion systems, most of these systems hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/20F02C7/00
Inventor 陈欣邬文泰
Owner 江苏华强新能源科技有限公司
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