Method for preparing biomass oil by improving bagasse by using molecular sieve catalyst

A technology of biomass oil and molecular sieve, which is applied in the preparation of liquid hydrocarbon mixtures, pressure vessels used in chemical processes, chemical/physical/physicochemical fixed reactors, etc., can solve the problems of no research and achieve high biomass conversion rate , low acid value and low technology conversion cost

Inactive Publication Date: 2019-04-19
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
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Problems solved by technology

[0004] However, there is no relevant research on the preparation of biomass oil using modified NaZSM-5 molecular sieves as catalysts and bagasse as raw materials.

Method used

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  • Method for preparing biomass oil by improving bagasse by using molecular sieve catalyst
  • Method for preparing biomass oil by improving bagasse by using molecular sieve catalyst
  • Method for preparing biomass oil by improving bagasse by using molecular sieve catalyst

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Embodiment

[0039] This embodiment provides a method for improving bagasse to prepare biomass oil by using a molecular sieve catalyst, such as figure 2 As shown in the process flow diagram of the method, the method may further comprise the steps:

[0040]Step 1: Add bagasse and deionized water into the high-temperature and high-pressure reaction kettle according to the material ratio of 1:20, and the addition amount of NaZSM-5 molecular sieve is 3.00g, and then heat the reaction kettle. When the reaction kettle reaches the preset reaction temperature of 285 At ℃, keep the constant temperature for 30 minutes, and finally pass in cooling water to cool down, and react to obtain a solid-liquid mixed product;

[0041] Step 2: After the solid-liquid mixed product obtained in the liquefaction process is vacuum-filtered and separated, the solid phase in the reaction product is washed with 300 mL of acetone several times and filtered with suction, and the acetone-soluble organic phase is rotary ...

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Abstract

The invention provides a method for preparing biomass oil by improving bagasse by using a molecular sieve catalyst. The method comprises the following steps of: adding bagasse into a high-temperaturehigh-pressure reaction kettle to perform hydrothermal liquefaction reaction by using a NaZSM-5 molecular sieve as a catalyst to obtain a solid-liquid mixed product; separating the solid-liquid mixed product, respectively extracting the separated liquid product with dichloromethane and ethyl acetate, and extracting the separated solid product with acetone; mixing the oil phases obtained after solid-liquid extraction to obtain the biomass oil. The method can effectively reduce the oxygen content in the biomass oil to 18-25 weight percent, and the heat value is increased to 25-35MJ / kg to reach the condition of stable combustion; the biomass oil has relatively low viscosity and condensation point and good fluidity; meanwhile, the biomass oil has a low oleic acid value and a copper sheet corrosion value of 1a, so that the biomass oil has low corrosion performance.

Description

technical field [0001] The invention belongs to the technical field of research, development and utilization of new energy in energy technology, and in particular relates to a method for improving bagasse to prepare biomass oil by using a molecular sieve catalyst. Background technique [0002] Bagasse is the detritus of sugarcane after extracting syrup. It is a kind of lignocellulosic biomass. It is not only rich in cellulose and lignin, but also has less ash and almost no sulfur. Biomass energy required for sustainable development. China is the third largest sugarcane planting country after Brazil and India. The total annual output of sugarcane in the south reaches more than 70 million tons, of which the output of bagasse reaches 7 million tons. Due to the backwardness of traditional technology, bagasse is generally discarded, or directly used for burning, piled up as fertilizer, and the utilization rate is low. Therefore, researchers are working on converting it into bio...

Claims

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Application Information

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IPC IPC(8): C10G1/00B01J19/18B01J3/04
Inventor 闫秀懿马九利王伟赵雅楠王振李蕊周菁辉
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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