Sodium salt-blast furnace dust catalyst and method for preparing biodiesel from sodium salt-blast furnace dust catalyst

A blast furnace dust, biodiesel technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low surface acidity, increased economic cost, high esterification reaction temperature, and achieve resource recovery. The effect of reducing reuse, improving catalytic efficiency, and improving catalytic activity

Active Publication Date: 2022-01-07
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these carbon-based solid acid catalysts usually have low surface acidity, which makes the esterificati

Method used

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  • Sodium salt-blast furnace dust catalyst and method for preparing biodiesel from sodium salt-blast furnace dust catalyst
  • Sodium salt-blast furnace dust catalyst and method for preparing biodiesel from sodium salt-blast furnace dust catalyst

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1-3

[0032] Take Fe: 33.42wt%, Ca: 10.17wt%, Na: 2.09wt%, Mn: 1.26wt%, Mg: 1.64wt%, Al: 0.89wt%, Zn: 0.35wt%, S: 0.89wt% BF ball mill grinding dust, grinding dust through the 200 mesh sieve, sieved dust 5h As a drying oven at 105 deg.] C conditions, after drying to obtain a uniform particle iron-containing blast furnace dust raw material.

[0033] According sodium - Na blast furnace dust content of the catalyst was impregnated with 26.18 percent sodium carbonate solution configuration, blast furnace dust raw material is poured into the impregnating solution in an oil heating bath with magnetic stirring 2h, the immersion temperature is 65 ℃, the sample obtained dried 200 mesh sieve, the resulting sample was placed in a tube furnace high-temperature calcination in nitrogen, the sample was calcined 200 mesh sieve, to obtain a sodium salt - catalyst blast furnace dust. Wherein the effect parameters and Examples 1-3 are shown in Table 1.

[0034] TABLE 1 Parameters and ...

Example Embodiment

[0036] Example 4

[0037] Example 1 was repeated with the following differences: blast furnace dust components Fe: 33.32wt%, Ca: 10.02wt%, Na: 2.00wt%, Mg: 1.57wt%, Zn: 0.32wt%, Mn: 1.23wt% , Al: 0.83wt%, S: 0.82wt%, a sodium salt in accordance with - the Na content in the catalyst is impregnated with a liquid blast furnace dust configuration 24.58% sodium carbonate.

Example Embodiment

[0038] Example 5

[0039] Example 1 was repeated with the following differences: blast furnace dust components Fe: 32.37wt%, Mg: 1.51wt%, Zn: 0.30wt%, Ca: 9.62wt%, Mn: 1.13wt%, Al: 0.79wt% , Na: 1.95wt%, S: 0.77wt%, according sodium - arranged impregnating solution of sodium carbonate was 23.26% blast furnace dust Na content in the catalyst.

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Abstract

The invention discloses a catalyst which is prepared by the following steps: grinding blast furnace dust by using a ball mill, and conducting screening; drying the sieved blast furnace dust at 75-105 DEG C for 5 hours or more to obtain pretreated iron-containing blast furnace dust; and soaking the pretreated blast furnace dust in a sodium salt solution, placing the pretreated blast furnace dust in an oil bath pan, carrying out magnetic stirring at 65 DEG C, drying the obtained sample at 75-105 DEG C for 5 hours or more, sieving the dried sample, and conducting calcining at 500-700 DEG C in a nitrogen atmosphere to obtain the sodium salt-blast furnace dust catalyst. The catalyst can be directly used for reaction of low-acid-value oil, the biodiesel yield is larger than or equal to 95%, the recycling capacity is good, and the biodiesel yield can reach 90% or above after 16 times of recycling.

Description

technical field [0001] The invention relates to a catalyst for biodiesel and a method for preparing biodiesel, in particular to a catalyst prepared by impregnating blast furnace dust with sodium salt and a method for preparing biodiesel using the catalyst. Background technique [0002] Currently, human society relies heavily on fossil fuels for energy. The burning of fossil fuels has led to the destruction of the ecological environment, and problems such as smog, greenhouse effect, and environmental pollution have seriously affected people's lives and health. The depletion of fossil fuels makes people realize that it is very important to develop clean, environmentally friendly and green renewable energy. Biodiesel is a renewable fuel produced by transesterification reaction of vegetable oil, animal oil, catering waste oil and low-priced alcohol under the action of acidic or basic catalyst, and has received extensive attention in recent years. The physical and chemical prop...

Claims

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Application Information

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IPC IPC(8): B01J23/78B01J23/889B01J37/02B01J37/08C10G3/00
CPCB01J23/78B01J23/8892B01J37/0201B01J37/08B01J37/0036C10G3/45C10G2400/04Y02E50/10Y02P30/20
Inventor 王一同李俊国高迪王福平于晴王晓嫚康乐乐姬睿
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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