Material feeding and feeding device for tube furnace, tube furnace and method for coal gasification

Abstract

The invention relates to the industrial field of the high-temperature heat treatment electric furnaces, and discloses a material feeding and taking device for a tube furnace, the tube furnace and a gasification method. The material feeding and taking device for the tube furnace comprises a material preparation chamber (21), an exhaust chamber (22), a material rod (23), a material bin (24) and a partition component (25). The material preparation chamber (21) and the exhaust chamber (22) are controlled by the material partition chamber (21) to communicate or not communicate with each other. Thematerial rod (23) is used for controlling the material bin (24) to move between the material preparation chamber (21) and a furnace body of the tube furnace after the partition component (25) is opened. A groove is formed in the lower portion of the exhaust chamber (22). According to the tube furnace, water injection at a high temperature can be achieved, and materials are placed in the tube furnace when a preset temperature is reached. In addition, a tail gas treatment unit is arranged in the tube furnace, and thus toxic gas generated in the reaction process can be removed.

Description

technical field [0001] The invention relates to the field of high-temperature heat treatment electric furnace industry, in particular to a material feeding and feeding device for a tube furnace, a tube furnace and a coal gasification method. Background technique [0002] In the coal gasification reaction, high temperature reaction of coal and water is involved. For large-scale application of entrained bed, the gasification temperature is generally above 1400°C. General metal materials are difficult to use under the condition of thousands of degrees Celsius, and the industry uses refractory brick inner walls or water-cooled walls to solve this problem. But for small-scale experimental production, the tube furnace using corundum tube is the best choice to meet the reaction temperature. [0003] However, when using a tube furnace (corundum tube furnace) for coal gasification experiments, there are the following technical difficulties: [0004] The first is the problem of pas...

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Problems solved by technology

[0013] Another object of the present invention is to solve the problem of immediate feeding under sealed conditions, avoiding pre-feeding to cause changes in the properties of materials during the heating process

[0014] Another object of the present invention is to overcome the defect that the corundum tube furnace in the prior art cannot be environmentally friendly and effectively treat toxic exhaust gas

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