Biomass liquified oil and preparation method thereof

A biomass liquefied oil and biomass technology, which is applied in the preparation of liquid hydrocarbon mixtures, biofuels, by-product vaporization, etc., can solve the problems of low energy utilization efficiency and low per capita energy consumption, and achieve good social economy and environment Benefits, good market prospects, and mild reaction conditions

Inactive Publication Date: 2010-05-12
RENMIN UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country's energy reserves are very rich, but due to the large population and low energy utilization efficiency, my country's per capita energy consumption is far below the average level of developed countries and the world

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: No catalyst was added, no carrier gas was introduced to prepare biomass liquefied oil

[0035] 1. Preparation of biomass liquefied oil

[0036] (1) The primary sedimentation and secondary sedimentation sludge are mixed according to the mass ratio of 1:1, the organic matter content is 62.9%, and the water content is 98.25%. At the same time, preliminary dehydration is carried out to make the water content reach 80%, and the mixed sludge is collected. mud.

[0037] (2) Pyrolysis of sludge: transfer 1000 grams of sludge collected in step (1) into a 2-liter autoclave with a stirring paddle, and seal it. The reaction temperature is 300°C, and cooling starts after 28 minutes of constant temperature reaction. When the temperature drops to 45°C, the exhaust valve is removed, and the liquefied biomass oil obtained from the reaction is taken out. The remaining sewage containing N, P, and K is used as fertilizer.

[0038] 2. Quality analysis of biomass liquefied oil ...

Embodiment 2

[0047] Example 2: Preparation of biomass liquefied oil by adding catalyst without introducing carrier gas

[0048] 1. Preparation of biomass liquefied oil

[0049] (1) The primary sedimentation and secondary sedimentation sludge are mixed at a mass ratio of 1:3. The organic matter content of the mixed sludge is 66.7% at this time, and the water content is 98.875%. Then, preliminary dehydration is carried out to make the water content reach 90%, the mixed sludge was collected.

[0050] (2) Pyrolysis of sludge: 1000 grams of sludge collected in step (1) and 18 grams of catalyst (potassium carbonate) were sent into a 2-liter high-pressure reactor with a stirring paddle, and sealed. The reaction temperature is 295°C, and cooling begins after 25 minutes of constant temperature reaction. When the temperature drops to 35°C, the exhaust valve is removed, and the biomass liquefied oil obtained from the reaction is taken out. The remaining sewage containing N, P and K can be used as f...

Embodiment 3

[0058] Embodiment 3: add catalyst, use hydrogen as carrier gas to prepare biomass liquefied oil

[0059] 1. Preparation of biomass liquefied oil

[0060] (1) Collect the secondary sedimentation sludge. The organic matter content of the used sludge is 80%, the water content is 99.5%, and then it is naturally air-dried (the sludge is naturally air-dried to form a mud cake, pulverized, which is beneficial to stirring), and used as a raw material for use.

[0061] (2) Pyrolysis of sludge: 1000 g of dry sludge obtained in step (1) and 20 g of catalyst (sodium carbonate) were put into a 2-liter autoclave with a stirring blade, and sealed. Use hydrogen to drive away the air in the reactor, use sodium carbonate as a catalyst, and the reaction temperature is 280°C. After constant temperature reaction for 20 minutes, cool down. When the temperature drops to 35°C, remove the exhaust valve to obtain sludge biomass liquefied oil. The remaining sewage containing N, P, and K is used as fert...

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Abstract

The invention discloses biomass liquefied oil and a preparation method thereof. By the method, sludge is pyrolyzed to obtain the biomass liquified oil. The sludge can be fresh primary-precipitate and secondary-precipitate mixed sludge. The water content of the sludge is 0-99.5% (by mass percent), and the proportion of the organic substance quantity accounts for 62.9-80% of the solid mass in the sludge, preferably 66.7-80%. The inside of a reaction kettle is provided with a protective atmosphere, and the protective atmosphere is a reductive atmosphere or an inert atmosphere obtained after carrier gas is introduced into the reaction kettle. Carbonate serving as a catalyst can be added into the pyrolysis reaction. The biomass liquefied oil obtained by utilizing the method has the characteristics of high yield, high heat value, high hydrogen content, low oxygen content and the like.

Description

technical field [0001] The invention relates to the fields of bioengineering and energy, in particular to biomass liquefied oil and a preparation method thereof. Background technique [0002] my country's energy reserves are very rich, but due to its large population and low energy utilization efficiency, my country's per capita energy consumption is far below the average level of developed countries and the world. Since my country became a pure oil importer in 1993, my country's oil imports have increased year by year, and its dependence on oil imports has gradually increased. In 2007, my country imported 211.39 million tons of oil, accounting for 57.805% of consumption. The increasingly unstable factors of energy consumption and the environmental problems caused by the utilization of traditional fossil energy make the research and development of new energy the focus of the national energy development strategy. [0003] In recent years, with the continuous improvement of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C02F11/10
CPCY02E50/13Y02E50/10Y02W10/40
Inventor 张景来
Owner RENMIN UNIVERSITY OF CHINA
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