A combined physical and chemical activation method for biocoke
A technology of physical chemistry and biocoke, applied in chemical instruments and methods, other chemical processes, coke ovens, etc., can solve the problems of low improvement of adsorption performance and neglect of surface chemical properties, etc., to achieve excellent surface chemical properties and enhanced Environmental friendliness and high heat utilization efficiency
Active Publication Date: 2019-09-27
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
At present, the method of improving the surface properties of biocoke is mainly a single physical activation or chemical activation method, and the commonly used physical activation agent is CO 2 and H 2 O, commonly used chemical activators are KOH, K 2 CO 3 ; This kind of activation method only focuses on improving the specific surface area and porosity of biocoke, while ignoring its surface chemical characteristics, and the improvement of its adsorption performance is not high.
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[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0029] Such as figure 1 As shown, an embodiment of the present invention provides a combined physical and chemical activation method of biological coke, which includes the following steps:
[0030] (1) The biological coke is fed into the activation chamber from the top of the activation chamber for activation, and the biological coke is driven from above by its own gravity and the rotation of the activat...
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The invention belongs to the technical field of activation of biological coke, and concretely disclose a biological coke physicochemical combined activation method. The biological coke physicochemical combined activation method is characterized in that the biological coke is taken as a raw material, a mixture containing CO2 high temperature flue gas and amine or ammonia waste liquid as a heat source and a physicochemical activator, and the physicochemical combined activation is carried out on the biological coke. The surface physicochemical characteristic of the biological coke is simultaneously improved during a one-step activation process, the biological coke with characteristics of developed pores, excellent surface chemical performance and low cost is prepared, and can be used in the fields of polluted gas trapping, water body purifying, soil improvement and restoration, and the method has the advantages of easy acquisition and low cost of the raw materials, simple process and wide product adaptability.
Description
Technical field [0001] The invention belongs to the technical field of biological coke activation, and more specifically, relates to a combined physical and chemical activation method of biological coke. Background technique [0002] Biomass pyrolysis polygeneration technology can simultaneously produce high-calorific value biogas, biocoke, wood tar and wood acetic acid, with significant economic benefits and vigorously promoting the development of the biomass energy industry. As one of the three major products of biomass pyrolysis polygeneration, biomass coke is a cheap adsorbent that can be used in water treatment, contaminated soil remediation, air purification, CO 2 It has a wide range of industrial applications in the fields of capture, flue gas desulfurization and denitrification. Improving the adsorption performance of biocoke and increasing its added value is an important driving force for the large-scale industrialization of biomass pyrolysis polygeneration technology. ...
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IPC IPC(8): B01J20/20B01J20/30C10B57/00
Inventor 张雄张世红邵敬爱张俊杰杨海平陈应泉杨晴王贤华陈汉平
Owner HUAZHONG UNIV OF SCI & TECH