Calcium carbide liquid jet granulation and waste heat utilization system and method

Abstract

The invention relates to a calcium carbide liquid jet granulation and waste heat utilization system and method. The system comprises a jet granulation device, a first steam boiler, a heat exchange device and a second steam boiler, wherein the jet granulation device comprises a thermal-state calcium carbide liquid inlet and a thermal-state calcium carbide particle outlet, an injector is arranged at the thermal-state calcium carbide liquid inlet, and multiple horizontally arranged seamless steel tubes are arranged between the outer wall and the inner wall of the jet granulation device and filled with first thermal superconductive heat exchange bodies connected with the first steam boiler; the heat exchange device comprises a thermal-state calcium carbide particle inlet and a thermal-state calcium carbide particle outlet, the thermal-state calcium carbide particle inlet is connected with the thermal-state calcium carbide particle outlet of the jet granulation device, and multiple horizontally arranged seamless steel tubes are arranged between the outer wall and the inner wall of the heat exchange device and filled with second thermal superconductive heat exchange bodies connected with the second steam boiler. With the adoption of the system and method, quick cooling and granulation of a calcium carbide liquid can be realized, and waste heat of the calcium carbide liquid can be effectively utilized.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a system and method for calcium carbide liquid injection granulation and waste heat utilization. Background technique [0002] At present, the process of smelting calcium carbide in a calcium carbide furnace will produce hot calcium carbide liquid at a temperature of 1700-2100 °C. After the hot calcium carbide liquid flows from the calcium carbide furnace to the cast steel calcium carbide pot, it is first sent to the cooling workshop with a rail car, and cooled to 500-600°C by natural ventilation, and then the calcium carbide ingot weighing about 1 ton is lifted by a large hook Hang it out, continue natural ventilation and cool it down to below 100°C, and then send it to the crushing workshop for coarse crushing and fine crushing, and make calcium carbide granules that meet the size for use. [0003] In the above-mentioned calcium carbide liquid granulation process,...

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Problems solved by technology

[0003] In the above-mentioned calcium carbide liquid granulation process, the cooling speed of large calcium carbide ingots is slow, the cooling time is long, and a large area of ​​space is required

At the same time, the crushing process of calcium carbide ingots will produce a large amount of calcium carbide dust, resulting in poor production environment

Due to the waste of calcium carbide dust, it will cause economic losses

Moreover, a large amount of waste heat carried by calcium carbide liquid is directly wasted in the cooling process and is not effectively utilized, resulting in energy loss

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