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Hydrothermal conversion method for preparation of biomass oil from construction waste wood

A biomass oil and wood technology, applied in the production of fat, petroleum industry, fat oil/fat production, etc., can solve the problems of poor atomization effect, low cetane number, difficult ignition, etc., and achieve good atomization effect and preparation Simple method, low viscosity and surface tension effect

Inactive Publication Date: 2016-05-04
杭州华政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

[0003] The technical problem to be solved by the present invention: it is difficult to burn out some solid particles and macromolecular lignin crackers in the biomass oil produced at present, and the atomization effect of the biomass oil is relatively poor due to its relatively high viscosity and surface tension. The disadvantages of low cetane number and difficulty in ignition provide a kind of waste wood from construction as raw material, which is cut, jet crushed, and dried to obtain wood chips, which are fully dissolved and mixed with p-toluenesulfonic acid under heating conditions, and then used in Carry out carbonization treatment in a muffle furnace, and then grind and sieve to obtain a black carbon-based acidification catalyst, add sawdust and distilled water to mix and swell, heat-preserve, heat and suction-filter the obtained filter cake and tetrahydrofuran for reflux reaction, filter to obtain the filtrate, distill off tetrahydrofuran, and then The method of carrying out multiple extractions to obtain biomass oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] First, select the waste wood from construction, clean the soil and silt on the surface of the wood, put it in a ventilated place to dry, and then cut it to prepare wood blocks with a size of 10cm×10cm, and dry the wood blocks at 70°C Treat it for 6 hours, after it is completely dry, crush it with an airflow, collect the sawdust and sieve it to prepare 80-mesh sawdust, then place the sawdust in an oven at 60°C for 6 hours to prepare the dried sawdust, and set aside; Count, select 15 parts of dried wood chips prepared above, 40 parts of p-toluenesulfonic acid and 45 parts of deionized water, stir and mix for 10 minutes, and slowly heat it to 30 ° C, stop heating after it is completely dissolved, Cool to 20°C, put it into a crucible, and dry it in an oven at 60°C for 6 hours; after drying, place it in a muffle furnace, carbonize it at 120°C for 2 hours, and then press the speed of 10°C / min Program temperature rise, when the temperature reaches 200°C, keep it warm for 3 hou...

example 2

[0021]Firstly, select construction waste wood, clean the soil and silt on the surface of the wood, put it in a ventilated place to dry, then cut it to prepare wood blocks with a size of 10cm×10cm, and dry the wood blocks at 75°C Treat for 7 hours, after it is completely dry, use airflow to pulverize, collect and sieve the sawdust to prepare 90-mesh sawdust, then place the sawdust in an oven at 70°C for 7 hours to prepare dried sawdust, and set aside; Count, select 22 parts of dried wood chips prepared above, 35 parts of p-toluenesulfonic acid and 43 parts of deionized water, stir and mix for 13 minutes, and slowly heat it to 37 ° C, stop heating after it is completely dissolved, Cool to 25°C, put it into a crucible, and dry it in an oven at 70°C for 7 hours; after drying, place it in a muffle furnace, carbonize it at 140°C for 2.5 hours, and then press 10°C / min Speed ​​program temperature rise, when the temperature reaches 220°C, keep it warm for 3.5 hours, then stop heating a...

example 3

[0024] First select the waste wood from construction, clean the soil and silt on the surface of the wood, put it in a ventilated place to dry, and then cut it to prepare wood blocks with a size of 10cm×10cm, and dry the wood blocks at 80°C Treat for 8 hours, after it is completely dry, collect the sawdust with jet crushing and sieve to prepare 100-mesh sawdust, then place the sawdust in an oven at 80°C for 8 hours to prepare dried sawdust, and set aside; In total, 30 parts of the dried wood chips prepared above, 30 parts of p-toluenesulfonic acid and 40 parts of deionized water were selected, stirred and mixed for 15 minutes, and slowly heated to 45°C. After it was completely dissolved, the heating was stopped and cooled. to 30°C, put it into a crucible, and dry it in an oven at 80°C for 8 hours; after the drying is completed, put it in a muffle furnace, carbonize it at 160°C for 3 hours, and then press the speed program of 10°C / min Raise the temperature, and when the temperat...

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Abstract

The present invention discloses a hydrothermal conversion method for preparation of biomass oil from construction waste wood, and belongs to the field of preparation of biomass oil. The method is as below: conducting cutting, air-flow crushing and drying on the raw material of construction of waste wood to obtain wood chips; fully dissolving wood chips with toluenesulfonic acid and mixing under heating condition; carbonizing in a muffle furnace; then milling and sieving to obtain a black carbon-based acidified catalyst; adding wood chips, mixing with distilled water, swelling, insulating, heating and conducting pumping filtration to obtain a filter cake; subjecting the filter cake and tetrahydrofuran to a reflux reaction, filtering to obtain a filtrate, distilling to remove tetrahydrofuran; and conducting several times of extraction to obtain biomass oil. The invention has the beneficial effects that the solids and high-molecular lignin lysate in the biomass oil can be burn out, and the product has low viscosity and surface tension, good atomization effect, and cetane number of 60-70. The method fully uses construction waste wood for preparation of biomass oil through hydrothermal conversion, so as to achieve the sustainable utilization of resources.

Description

technical field [0001] The invention relates to a method for preparing biomass oil through hydrothermal conversion of construction waste wood, which belongs to the field of biomass oil preparation. Background technique [0002] Biomass oil is a mixture of various degradation products of cellulose, hemicellulose and lignin. Biomass mainly includes firewood forest, economic forest, timber forest, crop straw and agricultural and forestry product processing residues such as sugar slag and sawdust. Biomass oil is a mixture of water and complex oxygenated organic matter, that is, a mixture of various degradation products of cellulose, hemicellulose and lignin. One is to solve the problems caused by burning straw in rural areas. At present, there is a large amount of crop straw, which is difficult to preserve. In many areas, the straw is burned on the spot, which not only wastes energy, causes serious environmental pollution, but also causes a large number of traffic accidents. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/10C11B1/04C11B1/10C11B3/12
CPCC10L1/10C10L2200/0476C11B1/04C11B1/106C11B1/108C11B3/12
Inventor 高大元盛艳花高力群
Owner 杭州华政新能源科技有限公司
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