Gas conversion furnace and reaction pipe sealing device thereof

Abstract

The invention discloses a reaction pipe sealing device of a gas conversion furnace. The device comprises two cover plates, wherein the two cover plates are respectively arranged on two sides of a furnace body of the conversion furnace; a groove for accommodating the reaction pipe is formed in one side of each of the cover plates, close to the furnace body; an air inlet through which the cover plate runs is formed in the bottom of the groove of one of the cover plates; an air outlet through which the cover plate runs is formed in the bottom of the groove of the other one cover plate; studs parallel to the reaction pipe are arranged on two sides of a furnace body; nuts matched with the studs are arranged at the free ends of the studs; the cover plates are arranged on the studs via the through holes formed in the cover plates in a sliding mode; and elastic members are arranged between the nuts and the cover plates. By adopting the device, the sealing performance of the reaction pipe can be effectively improved. The invention also provides the gas conversion furnace including the reaction pipe sealing device.

Description

technical field [0001] The invention relates to the field of metallurgical equipment, in particular to a coal gas reformer and a reaction tube sealing device thereof. Background technique [0002] With the continuous development of industry, significant progress has been made in the field of metallurgical technology. In the metallurgical industry, the laboratory gas reformer is an essential and important equipment. [0003] In the field of metallurgy, the laboratory gas reformer is widely used, and the high-temperature metallurgical detection of iron ore requires a gas reformer to obtain CO gas. For example, the low-temperature reduction pulverization of iron ore, the reduction degree experiment of iron ore, and the high-temperature droplet performance detection all require a gas reformer to obtain CO gas. [0004] The coal gas reformer can provide stable CO reducing gas with a certain pressure and flow rate. Its working principle is to fill the reaction tube of the gas re...

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Problems solved by technology

[0005] Usually, in order to keep the reaction temperature stable at 1150°C for a long time, the reaction tube is made of corundum refractory material. However, due to the brittleness of corundum material, the sealing method is limited, and rigid sealing cannot be adopted.

In the process of experimental testing, high temperature resistant graphite packing is often used, and the graphite packing is coiled inside the sealing cover of the gas reformer, and then the nut is tightened with bolts, so that the high temperature resistant graphite packing can react with the nut under tight pressure. The tubes are compressed to achieve the sealing effect. After the nut is compressed, the thermal expansion of the stone reaction tube needs to be considered, so as to remove the nuts that are rigidly connected. At this time, the sealing effect is completely dependent on the extrusion between the graphite packing and the reaction tube. , this method itself cannot achieve complete sealing, and because the corundum material is heated up to 1150°C, the reaction tube expands due to heat and the graphite packing is heated, and the extrusion weakens, which affects the sealing effect

In the actual operation process, it is very difficult to achieve a real seal, which will easily lead to gas leakage and threaten the lives of experimenters

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