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A method for increasing straw content in oil

A straw and content technology, applied in the field of increasing the content of straw in oil, can solve the problems of low straw content and low utilization efficiency of hydrogenation devices, and achieve the effects of high bulk density, favorable transportation and increased solid content

Active Publication Date: 2020-04-10
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this process, the crushed straw is directly mixed with heavy oil, and the content of straw in the slurry is low, which leads to low utilization efficiency of the hydrogenation unit

Method used

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  • A method for increasing straw content in oil

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Experimental program
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Effect test

Embodiment 1

[0024] A method for increasing the content of straw in oil, comprising the following steps:

[0025] (1) Drying and dehydrating the collected corn stalks, the drying temperature is 60°C, the drying time is 4h, and then pulverized by a ball mill until the median particle size (D50) is 100 μm;

[0026] (2) compressing the crushed stalks in step (1) with a tablet press, the compression pressure is 3MPa, and the compression temperature is 30°C;

[0027] (3) The straw after compression molding in step (2) is pulverized again with a ball mill until the median particle size (D50) is 50 μm to obtain straw powder with a bulk density of 400 kg / m 3 ;

[0028] (4) Mix 30 kg of straw powder in step (3) with 70 kg of waste oil, and use a mixer to grind and make pulp. The grinding and pulping time is 8 minutes to obtain a slurry with a concentration of 30 wt%.

Embodiment 2

[0030] A method for increasing the content of straw in oil, comprising the following steps:

[0031] (1) Drying and dehydrating the collected wheat straw, the drying temperature is 55°C, the drying time is 4.5h, and then pulverized with a hammer mill until the median particle size (D50) is 300 μm;

[0032] (2) compressing and molding the stalks pulverized in step (1) by a layering machine, the compression pressure is 0.5MPa, and the compression temperature is 60°C;

[0033] (3) The stalks compressed and formed in step (2) are pulverized again with a hammer mill until the median particle size (D50) is 30 μm to obtain straw powder with a bulk density of 300 kg / m 3 ;

[0034] (4) 50kg of straw powder in step (3) is mixed with 50kg of washing oil, ground and pulped to obtain a slurry with a concentration of 50wt%.

Embodiment 3

[0036] A method for increasing the content of straw in oil, comprising the following steps:

[0037] (1) Drying and dehydrating the collected peanut stalks, the drying and dehydration temperature is 50°C, the drying and dehydration time is 5h, and then crushed with a jet mill until the median particle size (D50) is 200 μm;

[0038] (2) Compressing the crushed straw in step (1) with a tablet press, the compression pressure is 1MPa, and the compression temperature is 40°C;

[0039] (3) The stalks compressed and formed in step (2) are pulverized again with a jet mill until the median particle size (D50) is 40 μm to obtain straw powder with a bulk density of 350 kg / m 3 ;

[0040] (4) 35kg of straw powder in step (3) and 65kg of waste engine oil were ground and pulped to obtain a slurry with a concentration of 35wt%.

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Abstract

The invention belongs to the technical field of biomass reutilization, and particularly relates to a method for improving the content of straws in oil. The method comprises the following steps: (1) drying and dehydrating collected straws, and crushing the straws to a median particle diameter (D50) of 100-300 [mu]m; (2) performing compression molding on the crushed straws obtained in step (1) undera compression pressure of 0.5-3 MPa at a compression temperature of 30-60 DEG C; (3) crushing the compression-molded straws obtained in step (2) to a median particle diameter (D50) of 30-50 [mu]m inorder to obtain straw powder; and (4) mixing the straw powder obtained in step (3) with oil in proportion, and performing grinding pulping to obtain a slurry having a concentration of 30-60 wt%. The method makes the solid content of the straws in the oil reach 30-60 wt%, and the viscosity of the slurry is only 500-1400 mPa.s (50 DEG C), so the slurry has good slurry ability and a high fluidity, can be easily conveyed, meets feeding requirements of a subsequent processing process, and improves the utilization efficiency of a device.

Description

technical field [0001] The invention belongs to the technical field of biomass reuse, and in particular relates to a method for increasing the content of straw in oil. Background technique [0002] Straw is the most abundant and cheapest biomass energy in the world, but it has not been fully utilized. In China, there are more than 700 million tons of crop straw and agricultural product chaff every year. A large amount of straw is burned or discarded everywhere, which is not only a waste It wastes precious resources and pollutes the environment, and also brings many hazards, such as causing fires, causing air pollution, destroying the soil environment, etc., which has a serious impact on the ecological environment on which human beings depend. Plant straw pyrolysis technology can convert low-grade biomass energy into high-quality liquid fuel or gaseous fuel. As the main component of biomass, cellulose pyrolysis will help improve the conversion and utilization level of biomas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/00C10L5/44
CPCC10L1/00C10L5/445C10L2290/08C10L2290/28C10L2290/30C10L2290/32Y02E50/10Y02E50/30
Inventor 林科崔永君许旭丁同利
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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