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High-performance microporous adsorbent for regeneration treatment of oil used in electric power industry, and preparation method of high-performance microporous adsorbent

A microporous adsorbent, power oil technology, applied in selective adsorption, ion exchange regeneration, chemical instruments and methods, etc., can solve the volume resistivity steam turbine oil demulsification degree foam characteristics and remove sludge with little effect, other The indicators are not greatly improved, the oil quality is adversely affected, etc., and the performance indicators are restored, decolorization and sludge removal are achieved, and the cost is low.

Active Publication Date: 2014-06-11
XIAN THERMAL POWER RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diatomaceous earth regenerates degraded oil products, and the effect of reducing the acid value is acceptable, but it has little effect on improving the volume resistivity of anti-fuel oil, the demulsification degree of steam turbine oil, the foam characteristics of oil products and the removal of sludge
In addition, a small amount of metal ions such as Fe, Al, and Mg contained in it will form complex macromolecules, which will have an adverse effect on oil quality
Ion exchange resins can only control the acid value of degraded oil products, and do not improve other indicators much. Moreover, during the regeneration process of oil products, a large amount of water will be generated, which will damage the oil. products cause secondary pollution
Activated alumina adsorbent is used to treat degraded oil products. It has a certain adsorption effect on organic acids and other oxidation products in oil products, but due to its large pore size (2.5~5.5nm) and relatively small active surface (180 ~370m 2 / g), its consumption is large and the cost is high

Method used

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  • High-performance microporous adsorbent for regeneration treatment of oil used in electric power industry, and preparation method of high-performance microporous adsorbent
  • High-performance microporous adsorbent for regeneration treatment of oil used in electric power industry, and preparation method of high-performance microporous adsorbent
  • High-performance microporous adsorbent for regeneration treatment of oil used in electric power industry, and preparation method of high-performance microporous adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dissolve 1g of n-butylamine and 99g of cetyltrimethylammonium bromide in 500g of distilled water, adjust the pH value to 8.2 with ammonia water and glacial acetic acid, stir in a water bath at 50°C for 20 hours, and set the stirring speed at 800r / min, then add 0.6g of powder with a particle size of about 10nm prepared by carbon nanotubes, continue to stir for 4 hours, then add a mixture of 300g of anhydrous sodium silicate and 170g of butyl titanate, and set the stirring speed to 1300r / min and continued to stir for 11 hours, cooled at room temperature, placed the obtained white initial gel product in a blast oven at 72°C for 15 hours, and washed the obtained white solid powder with absolute ethanol and distilled water three times respectively, and the washing solution was colorless Transparent; then transfer the obtained white powder to a microwave reactor, the reactor pressure is 0.5MPa, the power is controlled at 500W and the heating is continued for 3.0 hours, and t...

Embodiment 2

[0032] Dissolve 15g of tetraethylammonium hydroxide and 85g of cetyltrimethylammonium bromide in 500g of distilled water, adjust the pH value to 11.8 with ammonia water and dilute nitric acid, stir in a water bath at 85°C for 8.5 hours, and set the stirring speed to 800r / min, then add 20g of graphite-made powder with a particle size of about 10nm, continue to stir for 5 hours, then add a mixture of 840g of silica sol and 563g of isopropyl titanate, and set the stirring speed to 1300r / min Stirring was continued for 20 hours, cooled at room temperature, the obtained white initial gel product was placed in a blast oven at 110°C and dried for 18 hours, and the obtained white solid powder was washed three times with absolute ethanol and distilled water respectively, and the lotion was colorless and transparent; Then the obtained white powder was transferred to a microwave reactor, the pressure of the reactor was 0.98MPa, the power was controlled at 1000W, and the heating was continu...

Embodiment 3

[0038]Dissolve 10g of dipropylamine and 90g of cetyltrimethylammonium bromide in 500g of distilled water, adjust the pH value to 9.5 with ammonia water and glacial acetic acid, stir in a water bath at 75°C for 10 hours, and set the stirring speed to 800r / min, then add 6g of powder with a particle size of about 10nm prepared by carbon nanotubes, continue to stir for 5.5 hours, then add the mixture of 90g anhydrous sodium silicate, 390g silica sol and 402g titanium sulfate, set the stirring speed to Stir continuously at 1300r / min for 15 hours, cool at room temperature, place the obtained white initial gel product in a blast oven at 78°C and dry for 18 hours, wash the obtained white solid powder with absolute ethanol and distilled water three times respectively, and the washing solution It is colorless and transparent; the resulting white powder is then transferred to a microwave reactor with a pressure of 0.75MPa and a power control of 700W for 2.5 hours of continuous heating, a...

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Abstract

The invention discloses a high-performance microporous adsorbent for regeneration treatment of oil used in electric power industry, and a preparation method of the high-performance microporous adsorbent. The adsorbent comprises Si, Ti and C, and the mole ratio of Si, Ti and C is 5-7:1:0.1-0.7; the preparation method of the adsorbent comprises the following steps: 1. mixing organic amine and hexadecyl trimethyl ammonium bromide to obtain alkaline solution according to proportion; 2. adding a carbon source into the solution according to proportion, and stirring; 3. adding the mixture of a silicon source and a titanium source into the solution under the condition of stirring, and continuously stirring; 4. baking the product; 5. washing and baking the product to obtain white microporous adsorbent raw powder; and 6. transferring the obtained microporous adsorbent raw powder into a microwave reaction kettle, and heating under the condition of microwave radiation. The adsorbent can effectively remove polar molecules generated in oil products due to aging or hydrolysis, lower acid value of the oil products, improve the foam characteristic of the oil products, decolorize and remove oil sludge effectively and the like, so as to comprehensively restore each performance index of the oil products. The preparation method is simple and convenient, mild in conditions, easy to operate, low in cost, and especially suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of adsorbent for regeneration treatment of electric power oil, and in particular relates to a high-performance microporous adsorbent for regeneration treatment of electric power oil and a preparation method thereof. Background technique [0002] Power oils mainly include electrical insulating oils for transformers (including mineral and synthetic oils), lubricating oils for steam turbines (including water turbines) and phosphate ester anti-fuel oils (fluids). The power oil mainly plays an important role in insulation, lubrication, heat dissipation and hydraulic transmission during the operation of the unit. In the actual operation process, due to the influence of external temperature, oxygen, moisture and metal catalysis, oil aging is inevitable. Accidents such as tripping or non-stopping of power plants due to oil quality problems occur from time to time. [0003] At present, due to the high price of repl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D15/08
Inventor 唐金伟王娟李烨峰刘永洛严涛王笑微祝洁
Owner XIAN THERMAL POWER RES INST CO LTD
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