Method for liquefying plant biomass and waste polyester mixed supercritical fluid

A plant biomass and supercritical fluid technology is applied in the field of liquefying plant biomass and waste polyester mixed supercritical fluid to prepare bio-oil. problems, to achieve the effect of high liquefaction rate, improved liquefaction rate, and low liquid-solid ratio

Active Publication Date: 2012-10-10
莱鼎电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the objectives of the present invention is to overcome the deficiencies of the original plant biomass and waste polyester liquefaction technology, such as high liquefaction temperature and pressure, large amount of liquefaction agent, high liquefaction cost and low biomass liquefaction rate, and provide a plant biomass and waste polyester liquefaction technology. A new method for ester utilization, namely, a new method for high-efficiency supercritical fluid liquefaction of plant biomass and waste polyester mixture to produce bio-oil

Method used

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  • Method for liquefying plant biomass and waste polyester mixed supercritical fluid
  • Method for liquefying plant biomass and waste polyester mixed supercritical fluid
  • Method for liquefying plant biomass and waste polyester mixed supercritical fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Process parameters:

[0027] Corn straw powder 20g

[0028] Phenolic resin 10g

[0029] Ethanol dosage 152ml

[0030] Liquefaction temperature 230℃

[0031] Liquefaction holding time 5min

[0032] Sodium carbonate (to corn stalk powder, wt%) 10

[0033] Second, the specific process is as follows:

[0034] A 1 , 20g of corn stalk powder, 10g of phenolic resin, 2g of sodium carbonate and 152ml of dehydrated ethanol (density of 0.790g / ml) are placed in a reactor with a stirrer, that is, the amount of catalyst used is plant biomass 10% of the mass, the addition of the liquefaction agent is 4 times the sum of the plant biomass and the polyester mass, and the ratio of the plant biomass to the polyester mass is 2:1. Mix corn stalk powder, phenolic resin, catalyst and ethanol evenly, cover and seal and then heat up; raise the temperature of the reactor to 230°C, pressurize to 5MPa, and keep it in this state for 5min before stopping heating.

[0035] B 1 1. After the...

Embodiment 2

[0037] 1. Process parameters:

[0038] Wheat grass powder 20g

[0039] Polycarbonate 30g

[0040] Ethanol consumption 380ml

[0041] Liquefaction temperature 265°C

[0042] Liquefaction holding time 15min

[0043] Sodium hydroxide (wheatgrass powder, wt%) 6

[0044] Second, the specific process is as follows:

[0045]A2, 20g dry wheatgrass powder, polycarbonate of 30g, 1.2g sodium hydroxide and 380ml dehydrated alcohol (density is 0.790g / ml) are placed in the reactor that has agitator, promptly the consumption of catalyst is plant 6% of biomass quality, the addition of liquefaction agent is 6 times of the sum of plant biomass and polyester quality, and the ratio of plant biomass and polyester quality is 2: 3; Wheat grass powder, polycarbonate, catalyst and Mix ethanol evenly, cover and seal, then heat up; heat to 265°C, pressurize to 6.5MPa; keep warm for 15min in this state, then stop heating.

[0046] B2. After the liquefaction of step A2 is completed, when it is natu...

Embodiment 3

[0048] 1. Process parameters:

[0049] Wood powder 20g

[0050] ABS plastic 40g

[0051] Methanol consumption 455ml

[0052] Liquefaction temperature 280°C

[0053] Liquefaction holding time 30min

[0054] Sodium sulfide (to wood powder, wt%) 10

[0055] Second, the specific process is as follows:

[0056] A3, 20g absolute dry wood powder, 40gABS plastics, 2g sodium sulfide and 455ml anhydrous methanol (density is 0.792g / ml) are placed in the reactor with agitator, the consumption of catalyzer is 10% of plant biomass quality %, the addition of liquefaction agent is 6 times of the sum of plant biomass and polyester mass, and the ratio of plant biomass to polyester mass is 1:2. Mix wood powder, ABS plastic, catalyst and methanol evenly, cover and seal, then heat up; heat to 280°C, pressurize to 8MPa; keep warm for 30min in this state, then stop heating.

[0057] B3. After the liquefaction of step A3 is completed, when it is naturally cooled to 100° C., pass cooling water ...

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Abstract

The invention relates to a novel method for liquefying a plant biomass and waste polyester mixed supercritical fluid, which comprises the following steps of placing plant biomass, polyester, a catalyst and a liquefying agent into a reaction kettle with a stirrer, raising the temperature of the reaction kettle to 230-280 DEG C, pressurizing to 5-8MPa, preserving the temperature under the state for5-40min, introducing cooling water when being naturally cooled to 100 DEG C after the liquefying is finished to cool the reaction kettle to room temperature; filtering reactant mixture in the reaction kettle by using a Buchner funnel; extracting obtained filtrate and residue by using an organic solvent; and distilling obtained extract liquor and extract by using a rotary evaporator, wherein the product remained in a distillation flask after the distillation is the biomass liquefied oil. The invention develops a new way of utilizing the plant biomass and the waste polyester, realizes the moderation of the liquefying condition of the plant biomass, improves the quality of the biological oil because of the molecular weight of the biological oil is lower, and improves the utilization efficiency of the plant biomass and the waste polyester.

Description

technical field [0001] The invention relates to a method for reusing plant biomass and waste polyester; especially a method for preparing bio-oil by using the synergistic liquefaction of plant biomass and waste polyester under the action of supercritical fluid, specifically a method The invention discloses a method for preparing bio-oil by liquefying supercritical fluid mixed with plant biomass and waste polyester. Background technique [0002] With the development of human society, people's consumption of oil, natural gas and coal continues to increase. The massive consumption of fossil fuels not only causes the greenhouse effect and produces acid rain, but also deteriorates the quality of the air, seriously threatening the living environment of human beings. Therefore, the development and utilization of renewable energy to take the energy path of sustainable development has attracted great attention from governments of all countries. In recent years, with the continuous ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00
Inventor 龙柱龙玉峰
Owner 莱鼎电子材料科技有限公司
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