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Method for treating biomass process residues

A treatment method and biomass technology, applied in the direction of solid waste removal, adsorbed water/sewage treatment, etc., can solve problems such as shortage, complicated post-treatment process, environmental pollution, etc., to avoid pollution, cumbersome post-treatment process, high social value effect

Active Publication Date: 2011-03-30
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the Chinese patent application CN88102767A, it is proposed to use a chemical activator (solid zinc chloride) to activate distiller's grains to prepare activated carbon, but there are problems such as complicated post-processing procedures and environmental pollution.
In addition, disclosed in the Chinese patent application CN101045535A is a method for producing activated carbon by concentrating and carbonizing the black liquor of papermaking pulping, which uses a chemical activation method, and also has problems such as complicated post-processing procedures and environmental pollution.
Therefore, there is still a lack of methods for high-value utilization of cellulose-rich biomass process residues with good social, environmental and economic benefits

Method used

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Examples

Experimental program
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Embodiment 1

[0052] The dried vinegar grains 100g is placed in a fixed-bed carbonization furnace, and the gas velocity is 500ml / min of N 2 Under the atmosphere, the temperature was programmed to rise to 800°C within 1 hour, and kept for 1 hour to complete carbonization, then the temperature was raised to 875°C, and the reaction gas was switched to CO 2 , with a gas velocity of 500ml / min, activated for 3 hours, washed with deionized water, dried in a drying oven at 110°C, and prepared Si / C-based functional materials for about 2 hours, using nitrogen adsorption method, Autosorb-3B to compare the area The specific surface area measured by the tester is 460m 2 / g, the pore size is 0.8nm.

Embodiment 2

[0054] In this example, except that the activation time is 1 hour, other process conditions are the same as Example 1, and the specific surface area of ​​the prepared Si / C-based functional material is 480m 2 / g, the pore size is 0.6nm.

Embodiment 3

[0056] Place 100 g of dried distiller's grains in a fixed-bed carbonization furnace under N 2 Under the atmosphere, the gas velocity was 500ml / min, the temperature was programmed to rise to 650°C within 1 hour, kept for 1 hour, and then cooled to room temperature. 5g of carbonized material is placed in the fluidized bed activation furnace, and the gas velocity is 0.15g / min H 2 Activated under O atmosphere for 1 hour, the Si / C-based functional material was prepared with a specific surface area of ​​349m 2 / g, the pore diameter is 3.97nm.

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Abstract

The invention provides a method for treating biomass process residues. A high-performance Si / C-based functional material is prepared from cellulose-rich biomass process residues such as vinegar residues, white spirit distillers' grains, bagasse, coffee grounds, tea grounds, Chinese herb residues and the like. The method comprises the following steps of: (1) heating to carbonize the biomass process residues to obtain a carbonized material; (2) mixing the carbonized material obtained in the step (1) and a pore-expanding agent such as syrup, papermaking black liquor, starch or tar and carbonizing for the second time to obtain a pore-expanding material; (3) heating to activate the carbonized material obtained in the step (1) or the pore-expanding material obtained in the step (2) to obtain the Si / C-based functional material. By the method, the cellulose-rich biomass process residues can be efficiently converted, and wastes are recycled; a process system is simple; and the prepared Si / C-based (porous) functional material can meet the requirements of different application objects on pore diameter and has high adaptability.

Description

technical field [0001] The invention belongs to the technical field of production of active carbon functional materials, and in particular relates to a method for high-value utilization of cellulose-rich biomass process residues. Background technique [0002] The light industry that uses agricultural products as raw materials obtains light industrial products such as food, beverages, medicines, and paper through processing raw materials, and at the same time produces a large amount of biomass waste residue (i.e., biomass process residue), including oil meal, bagasse, vinegar grains, sauce residue, Various biomass process residues including distiller's grains, fermentation residues, traditional Chinese medicine residues, and black liquor soluble residues. These light industrial biomass process residues have been concentrated, large in volume, produced in specific light industrial production processes, and rich in cellulose, protein or lignin. [0003] my country's annual out...

Claims

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Application Information

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IPC IPC(8): B09B3/00C02F1/28
Inventor 汪印钟梅李强余剑董利许光文
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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