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Method for simultaneously producing activated carbon and medium heating value (MHV) fuel gas by using eupatorium adenophorum

A technology for the production of activated carbon and Eupatorium adenophorum, which is applied to chemical instruments and methods, products, fuels, etc., can solve the problems of comprehensive utilization of polluted resources, shortage, high cost, etc., and achieve the effects of wide sources, large output, and reduced corrosion

Inactive Publication Date: 2013-01-09
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] The purpose of the present invention is to provide a method for the simultaneous production of activated carbon and medium heat by using Eupatoria adenophorum for the utilization of Eupatoria adenophorum as biomass energy and the problems of high cost, serious pollution and insufficient comprehensive utilization of resources in the existing activated carbon preparation technology. Simple, efficient and environmentally friendly way to value gas

Method used

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  • Method for simultaneously producing activated carbon and medium heating value (MHV) fuel gas by using eupatorium adenophorum
  • Method for simultaneously producing activated carbon and medium heating value (MHV) fuel gas by using eupatorium adenophorum
  • Method for simultaneously producing activated carbon and medium heating value (MHV) fuel gas by using eupatorium adenophorum

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Embodiment 1

[0028] (1) After drying, Eupatorium adenophorum was heated to 550°C at a heating rate of 10°C / min for carbonization, and the carbonization time was 1.5 hours;

[0029] (2) After pulverizing the carbonized material obtained in step (1) to 30 mesh, the temperature was rapidly raised to 620°C at a heating rate of 40°C / min, and kept for 10 minutes, so that the residual volatiles were quickly volatilized and the oxidation consumption of the material was reduced. Then increase the temperature to 900°C at a rate of 10°C / min. At this time, pass carbon dioxide into the furnace and activate it for 140 minutes under the atmosphere of carbon dioxide as an activator. The flow rate of carbon dioxide is determined according to the amount of material, which is 55L / Kg·min to obtain activated carbon. Crude and medium calorific value gas;

[0030] (3) Cool the crude activated carbon obtained in step (2) to room temperature under the protection of isolated air, and then dry it at 100°C for 3 hour...

Embodiment 2

[0033] (1) After drying, Eupatorium adenophorum was heated to 600°C at a heating rate of 15°C / min for carbonization, and the carbonization time was 2 hours;

[0034](2) After the carbonized material obtained in step (1) is crushed to 35 mesh, the temperature is rapidly raised to 670°C at a heating rate of 45°C / min, and the temperature is kept for 8 minutes, so that the residual volatile matter can be quickly volatilized and the oxidation consumption of the material can be reduced. Then increase the temperature to 1000°C at a rate of 15°C / min. At this time, pass carbon dioxide into the furnace and activate it for 130 minutes under the atmosphere of carbon dioxide as an activator. The flow rate of carbon dioxide is determined according to the amount of material, which is 50L / Kg·min, and activated carbon is obtained. Crude and medium calorific value gas;

[0035] (3) Cool the crude activated carbon obtained in step (2) to room temperature under the protection of the isolated air,...

Embodiment 3

[0038] (1) After drying, Eupatorium adenophorum was heated to 630°C at a heating rate of 12°C / min for carbonization, and the carbonization time was 2.5 hours;

[0039] (2) After pulverizing the carbonized material obtained in step (1) to 40 mesh, rapidly raise the temperature to 700°C at a heating rate of 42°C / min, and keep it warm for 5 minutes, so as to quickly volatilize the residual volatile matter and reduce the oxidation consumption of the material. Then heat up to 960°C at a heating rate of 12°C / min. At this time, pass carbon dioxide into the furnace and activate for 120 minutes under the atmosphere of carbon dioxide as an activator. The flow rate of carbon dioxide is determined according to the amount of material, which is 80L / Kg·min, and activated carbon is obtained. Crude and medium calorific value gas;

[0040] (3) Cool the crude activated carbon obtained in step (2) to room temperature under the protection of isolated air, and then dry it at 110°C for 2 hours to ob...

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Abstract

The invention provides a method for simultaneously producing activated carbon and medium heating value MHV fuel gas by using eupatorium adenophorum. The method comprises the following steps of: drying and heating up eupatorium adenophorum for carbonization; heating up and carrying out heat preservation after crushing, then heating up to 900-1000 DEG C, and feeding carbon dioxide to a furnace for activation, thereby obtaining crude products of the activated carbon and MHV fuel gas; and cooling the crude product of the activated carbon to room temperature under the protection of air isolation, and then drying to obtain the product of the activated carbon. The iodine adsorption capacity of the main quality index of the obtained activated carbon achieves the national primary standard, the adsorption property of the obtained activated carbon is good, and the prepared fuel gas has a heat value up to 11000-13000KJ / m<3>, includes main components C2H2, H2, CH4 and CO, belongs to the MHV fuel gas, and can be used as a gas fuel. According to the method for simultaneously producing activated carbon and medium heating value (MHV) fuel gas by using eupatorium adenophorum, the whole process is shorter in activation time, pollution-free in preparation process, high in comprehensive utilization of resources, and high in added value of the product; the materials are rich in source, and the eupatorium adenophorum resources can be fully converted into biomass energy products.

Description

technical field [0001] The invention relates to a method for simultaneously producing activated carbon and gas with medium calorific value by using Eupatorium adenophorum, and belongs to the technical field of materials and gas preparation. Background technique [0002] Eupatorium adenophorum is a worldwide poisonous weed with strong vitality and destructive power. Eupatorium adenophorum is native to Mexico. Since it was introduced to southern my country in the last century, it has caused great harm to my country's agriculture, forestry and animal husbandry. Eupatorium adenophorum grows rapidly, has strong reproductive ability, and spreads rapidly. It is easy to form a large group, repel the growth of other plants, and seriously damage biological diversity. Since the carbon content of Eupatorium adenophorum is higher than that of general agricultural and forestry crops, and its calorific value is close to that of woody plants, it is of practical significance to convert Eupat...

Claims

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Application Information

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IPC IPC(8): C01B31/10C10L3/02C01B32/336
CPCY02P20/141
Inventor 夏洪应郑照强彭金辉张利波周俊文刘秉国郭胜惠许磊巨少华
Owner KUNMING UNIV OF SCI & TECH
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