Process and system for preparing high-yield and high-activity powdery active coke from lignite

A high-activity, high-yield technology, applied in coke ovens, petroleum industry, carbon compounds, etc., can solve the problems of large ignition loss, high raw material cost, and low yield, and achieve the effect of reducing ash content and improving quality

Inactive Publication Date: 2018-11-30
SHANDONG UNIV
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Problems solved by technology

Generally, the chemical reactivity of lignite is high, and the preparation of fine coke also has high SO 2 Adsorption capacity, but in the process of powder coke preparation, coal is also easy to react with the activator, the loss on ignition is large, and the yield is low. The yield is usually lower than 30% or even 20%, resulting in high raw material costs

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  • Process and system for preparing high-yield and high-activity powdery active coke from lignite
  • Process and system for preparing high-yield and high-activity powdery active coke from lignite
  • Process and system for preparing high-yield and high-activity powdery active coke from lignite

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[0018] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0019] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0020] The graded and segmented powder coke preparation process described in this application refers to the p...

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Abstract

The invention discloses a process and system for preparing high-yield and high-activity powdery active coke from lignite. The process is characterized in that the lignite is used as raw materials; a graded and sectioned powdery coke preparation process is used, wherein the oxygen equivalent weight ratio in the smoke gas entering a coke preparation section from a combustion section is 0.1 to 0.3; the temperature of the coke preparation section is 850 to 1050 DEG C. The powdery active coke is prepared; meanwhile, the characteristics of high yield and high activity are realized.

Description

technical field [0001] The invention relates to the technical field of high-efficiency, clean and comprehensive utilization of coal, in particular to a process and system for preparing high-yield and high-activity powdered active coke from lignite. Background technique [0002] Activated coke usually has a well-developed pore structure and certain surface chemical activity, and has a wide range of applications in the fields of gas and water purification. The applicant has long-term research in the field of active coke preparation for flue gas desulfurization. In order to reduce the production cost of active coke, the applicant has patent application number 201310176387.1 "A process and device for rapidly preparing powdered active coke for desulfurization by using pulverized coal" The process of extracting boiler hot flue gas and tempering coal powder to quickly prepare powdered activated coke is proposed in the paper. Compared with the complicated preparation process of trad...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/318C10B53/04
Inventor 王涛周滨选张振刘志徐天明付加鹏马春元
Owner SHANDONG UNIV
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