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Modified eggshell biodiesel catalyst and preparation method and application thereof

A biodiesel and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of reduced catalyst effect, poor catalyst reusability, and energy consumption. High-level problems, to achieve the effect of high recycle times, solving disposal problems, and low energy consumption

Inactive Publication Date: 2018-01-05
YULIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To sum up, these methods all have better effects, and the separation process is simpler than that of homogeneous catalysts, but they need to be calcined at a high temperature of 800-1000°C for at least 4 hours, which consumes a lot of energy, and the catalyst is recyclable. Utilization is poor, after recycling 6 times, the catalyst effect is obviously reduced

Method used

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  • Modified eggshell biodiesel catalyst and preparation method and application thereof
  • Modified eggshell biodiesel catalyst and preparation method and application thereof
  • Modified eggshell biodiesel catalyst and preparation method and application thereof

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preparation example Construction

[0023] The preparation method of the modified eggshell biodiesel catalyst of the present invention is carried out through the following steps:

[0024] 1) Wash the surface of the eggshell with deionized water, remove the dirt attached to the surface, dry it in an oven at 100°C, and then use a pulverizer to crush the dried eggshell and pass it through a 80-100 mesh sieve. The particles continue to repeat the crushing process until all are sieved to obtain finer eggshell powder;

[0025] 2) Mix the sieved eggshell powder and sodium hydroxide according to the mass ratio of 1:(1~2.5), roast in a muffle furnace at 500~600°C for 0.5~2 hours, cool and crush, and pass through a 80~100 mesh sieve , to obtain powder A, dissolve powder A with deionized water, the mass ratio of powder A to deionized water is 1:10, and add powdered sodium nitrate to deionized water, wherein the mass ratio of powder A to sodium nitrate is 1 : (0.22~0.44), make the quality of sodium nitrate powder account f...

Embodiment 1

[0033] (1) Sampling of egg shells and waste oil:

[0034] Eggshells and waste oil were collected from the dining waste in the student canteen. The eggshells were cleaned with deionized water, and the waste oil was centrifuged to remove food residues and particles.

[0035] (2) Preparation of modified eggshell biodiesel catalyst:

[0036]Put the cleaned eggshells in an oven to dry at 100°C, then use a pulverizer to pulverize the dried eggshells and pass through an 80-mesh sieve, and repeat the pulverization process for the intercepted large particles until they are all sieved to obtain a better result. fine eggshell powder; mix the sieved eggshell powder with sodium hydroxide in a mass ratio of 1:1 and roast in a muffle furnace at 500°C for 0.5 hours, cool, pulverize, and pass through an 80-mesh sieve to obtain powder A. Powder A is dissolved in deionized water, the mass ratio of powder A and deionized water is 1:10, and powdered sodium nitrate is added to the deionized water,...

Embodiment 2

[0052] (1) The sampling of eggshells and waste oil is the same as in Example 1.

[0053] (2) Preparation of modified eggshell biodiesel catalyst:

[0054] Put the cleaned eggshells in an oven to dry at 100°C, then use a pulverizer to crush the dried eggshells and pass through an 85-mesh sieve, and repeat the crushing process for the large particles that are intercepted until they are all sieved. Fine eggshell powder; mix the sieved eggshell powder with sodium hydroxide in a mass ratio of 1:1.5 and roast in a muffle furnace at 525°C for 1 hour, cool, pulverize, and pass through a 85-mesh sieve to obtain powder A. Powder A is dissolved in deionized water, the mass ratio of powder A and deionized water is 1:10, and powdered sodium nitrate is added to the deionized water, wherein the mass of sodium nitrate powder accounts for 25% of the total mass of powder A and deionized water %, then placed on a magnetic stirrer at 2000rpm / min and stirred at 70°C for 6 hours; the stirred mixtu...

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Abstract

The invention relates to a modified-eggshell biodiesel oil catalyst, and a preparation method and application of the modified-eggshell biodiesel oil catalyst. The preparation method comprises the following steps: firstly, baking and crushing clean eggshells, so as to obtain eggshell powder; mixing the eggshell powder with sodium hydroxide, carrying out roasting, carrying out crushing so as to obtain powder A, adding the powder A into water, adding sodium nitrate into the water, and then, carrying out stirring, so as to obtain a suspension; and standing the suspension, removing supernatant after layering is achieved, collecting lower-layer solids, and carrying out water washing, roasting and impurity removal, thereby obtaining the modified-eggshell biodiesel oil catalyst. According to the modified-eggshell biodiesel oil catalyst, and the preparation method and application of the modified-eggshell biodiesel oil catalyst, the eggshell powder is subjected to soaking and roasting treatments through sodium hydroxide and sodium nitrate, so that the number of alkaline and acidic active groups of the catalyst is effectively increased, the catalytic activity of the catalyst for catalyzed preparation of biodiesel oil is greatly improved, the number of times of cyclic utilization is large, and the conversion ratio of the catalytically-produced biodiesel oil is high.

Description

【Technical field】 [0001] The invention belongs to the technical field of biodiesel, and relates to a modified eggshell biodiesel catalyst as well as its preparation method and application. 【Background technique】 [0002] Energy is the foundation of human survival. At present, the main body of energy consumption in the world is oil. With the development of industrial technology, the demand for oil is also increasing. However, this kind of non-renewable energy will be exhausted one day. As a renewable energy source, biodiesel has the advantages of low environmental pollution and high calorific value. When used in production and life, it can better meet people's needs and reduce environmental burdens. At present, chemical means are mainly used to prepare biodiesel, that is, under the action of a catalyst, the alcohol-oil transesterification is used to produce it. The effect of the catalyst directly affects the reaction rate and yield. The commonly used catalysts are mainly homo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/04C11C3/10C10L1/02
CPCB01J23/002B01J23/04B01J2523/00C10L1/02C11C3/10B01J2523/23B01J2523/12Y02E50/10
Inventor 相玉琳王立鹏李越焦玉荣陈小康王若恺
Owner YULIN UNIV
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