Small constant-pressure coking device and constant-pressure coking method

Abstract

The invention relates to a small constant-pressure coking device and a constant-pressure coking method. The device comprises an experiment coke oven, a temperature controller, a constant-pressure system and a control system, wherein the experiment coke oven is provided with a plurality of groups of silicon carbide rods, a resistance wire and a coking chamber, the constant-pressure system is composed of a hydraulic pump, a buffer cylinder and a movable press plate, a push rod of the buffer cylinder is connected with the movable press plate through a first hollow pipe and can drive the movable press plate to move up and down in the coking chamber, and the bottom end of the first hollow pipe penetrates through the movable press plate to be communicated with the interior space of the coking side of the coking chamber; a temperature sensor is arranged in the coking chamber, a displacement sensor is arranged on the top of the experimental coke oven, and an oil pressure regulator is arranged on a hydraulic pipeline between the hydraulic pump and the buffer cylinder. According to the device and method, coking can be conducted under the constant-pressure condition, so that the correspondence between pressure and coke quality is obtained, or comparative study is conducted on the quality of coke of different coal types under the same pressure. The device and method have great guiding significance in coal blending for coking and coking mechanism research, and the purposes of optimizing coking production process, saving coking equipment investment and effectively utilizing resources are realized.

Description

technical field [0001] The invention relates to the technical field of laboratory coking, in particular to a laboratory single-hole small constant-pressure coking device and a constant-pressure coking method. Background technique [0002] my country is a big coke production, consumption and export country. Since the early 1990s, the output and export volume have ranked first in the world. The largest consumer of coke is the iron and steel industry, accounting for more than 80%, mainly used in blast furnace ironmaking. Coke is mainly used as heat source, reducing agent, carburizing agent and loose skeleton in blast furnace ironmaking process. With the enlargement of blast furnaces and the development and application of technologies such as oxygen-enriched pulverized coal injection (the largest domestic coal injection rate can reach 261kg / t pig iron), the requirements for the quality of coke produced by blast furnaces, especially the thermal performance of coke, are getting hig...

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Problems solved by technology

The volume of the coking chamber of the coke oven changes with the movement of the furnace wall, and the expansion pressure ch...

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