Method and device for performing electrochemical strengthening liquid phase catalysis and low-temperature splitting decomposition on biomass

A low-temperature cracking and strengthening liquid technology, applied in chemical instruments and methods, chemical/physical processes, preparation of liquid hydrocarbon mixtures, etc., can solve the problems of difficult catalysts, simple environment, low utilization rate of waste heat, etc. The effect of accelerating the cracking rate and improving the utilization rate

Active Publication Date: 2015-11-11
坤育环境发展(云南)有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The development of biomass combustion technology in China is still relatively backward. As the main body of biomass resources in my country, agricultural straw has long been used only as rural domestic energy resources or incinerated on-site. The utilization rate is extremely low, and the combustion produces pollution such as smoke, NOx and SOx thing
Fermentation technology mainly includes ethanol fermentation and biogas fermentation. In ethanol fermentation, it is difficult for the catalyst to contact with lignocellulose, and it is difficult to find suitable strains.
The common problems of biogas fermentation are low conversion rate of biogas fermentation raw materials, low gas production rate, poor operation stability, backward advanced treatment technology after anaerobic fermentation, low power generation efficiency of biogas internal combustion engine and low utilization rate of waste heat, etc.
This method has a simple environment and high yield under laboratory conditions, but in actual engineering applications, the reaction environment is complex, the survival rate of microorganisms is low, and it is difficult to control, which will lead to a decrease in yield
In terms of microbial hydrogen production, the emphasis is on basic research, including the transport mechanism and characteristics in the biohydrogen reactor, the optimal design and control of the reactor, and the construction of efficient hydrogen-producing bacteria and molecular ecological diagnosis, metabolic regulation mechanism, bottom line, etc. Insufficient research on matter and light energy conversion efficiency, it is difficult to apply to large-scale engineering applications

Method used

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  • Method and device for performing electrochemical strengthening liquid phase catalysis and low-temperature splitting decomposition on biomass

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Embodiment 1: The method for electrochemically strengthening liquid-phase catalytic low-temperature pyrolysis of biomass, the specific content is as follows:

[0019] 1. Mix 1.5kg of corn stalks with 3.3kg of ionic liquid (2.25kg of ionic liquid [Bmim]OTf and 1.0kg of AlCl 3 Mixed solution) was mixed and added into the reactor, and the electric-assisted cracking reaction occurred for 100 minutes under the condition of high-heat flue gas, temperature 140°C, stirring speed 500r / min, voltage 0.5V, and combustible gas and bio-oil were produced after the cracking was completed;

[0020] 2. If figure 1 As shown, the electric assisted cracking reactor that completes the above method includes a cylinder 1, a spiral anode, 2, a grid cylindrical cathode 3, and the spiral anode 2 is arranged in the grid cylindrical cathode 3 and is arranged on the cylinder The motor 9 on the body 1 drives the rotation, the spiral anode 2 and the grid cylindrical cathode 3 are arranged in the cyli...

Embodiment 2

[0023] Embodiment 2: The method for electrochemically strengthening liquid-phase catalytic low-temperature pyrolysis of biomass, the specific content is as follows:

[0024] 1. Mix 2.1kg of rice straw with 6.5kg of ionic liquid (5.0kg of ionic liquid [Emim]Cl and 1.5kg of SnCl 2 mixed liquid) mixed into the reactor, and the carrier gas N 2 , The temperature is 220°C, the stirring speed is 800r / min, and the voltage is 1.2V, and the electric assisted cracking reaction occurs for 80 minutes. After the cracking is completed, combustible gas and bio-oil are produced;

[0025] 2. The structure of the electric-assisted cracking reactor for completing the above method is the same as that in Example 1, except that the spiral anode is a graphite electrode, and the grid cylindrical cathode is a palladium electrode.

[0026] Put the straw into the barrel of the electric cracking reactor from the feed port, close the feed port, N 2 It is introduced from the air inlet, and the ionic liqui...

Embodiment 3

[0028] Embodiment 3: The method for electrochemically strengthening liquid-phase catalytic low-temperature pyrolysis of biomass, the specific content is as follows:

[0029] 1. Mix 5.4kg tobacco leaves with 18.9kg ionic liquid (16kg ionic liquid [Bmim]Cl and 2.9kgFeCl 2 mixed liquid) mixed into the reactor, and the carrier gas N 2 , The temperature is 300°C, the stirring speed is 1000r / min, and the voltage is 10V, and the electric cracking reaction occurs for 120min. After the cracking is completed, combustible gas and bio-oil are produced;

[0030] 2. The structure of the electric-assisted cracking reactor for completing the above method is the same as that of Example 1, except that the spiral anode is a gold electrode, and the grid cylindrical cathode is a graphite electrode.

[0031] Put the tobacco leaves into the barrel of the electric cracking reactor from the feed port, close the feed port, N 2 It is introduced from the air inlet, and the ionic liquid is transported f...

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Abstract

The invention discloses a method of performing electrochemical strengthening liquid phase catalysis and low-temperature splitting decomposition on biomass. According to the method, ionic liquid is taken as a catalytic reaction medium in a biomass splitting decomposition process, so that the biomass is subjected to electrochemical stimulation in the ionic liquid to make a splitting decomposition reaction and generate a high-added-value split product. An electricity-assisted splitting decomposition reactor used in the method comprises a barrel, a screw type anode and a grid cylinder type cathode, wherein the screw type anode is arranged in the grid cylinder type cathode and is driven to rotate by a motor arranged on the barrel, the screw type anode and the grid cylinder type cathode are arranged in the barrel, the upper end of the barrel is provided with a feeding hole and an air outlet, and the lower part of the barrel is provided with a discharge hole, an ionic liquid inlet and an air inlet. The biomass is heated evenly, the chemical bond of lignocellulose is enabled to break, and an ionic pair midbody is generated and is subjected to electrical field stimulation, thus increasing the splitting decomposition rate; the efficiency is high, the process is easy to control, and the use ratio of the biomass is improved.

Description

technical field [0001] The invention belongs to the technical field of biomass utilization, and in particular relates to a method and device for electrochemically strengthening liquid-phase catalytic low-temperature pyrolysis of biomass. Background technique [0002] As the largest agricultural country in the world, my country has abundant biomass resources, the main sources of which are agricultural and forestry waste, grain processing waste, wood processing waste and municipal solid waste. Agricultural and forestry waste is the main body of biomass resources in my country. my country produces about 650 million tons of agricultural straw every year, plus firewood and forestry waste, which is equivalent to 460 million tons of standard coal. my country's annual forest consumption reaches 210 million cubic meters , equivalent to the energy of 120 million tons of standard coal. In addition, the annual output of urban domestic waste in the country has exceeded 150 million tons. ...

Claims

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Application Information

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IPC IPC(8): C10G1/00B01J6/00B01J19/08
Inventor 瞿广飞赵茜黄希李军燕宁平
Owner 坤育环境发展(云南)有限公司
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