Fused calcium carbide primary cooling granulation molding system and waste heat recovery method

Abstract

The invention relates to a fused calcium carbide one-time cooling granulation forming system and a waste heat recovery method. The system comprises a high-temperature calcium carbide liquid storage tank, a waste heat recovery device and a heat collector positioned at the lower part of the high-temperature calcium carbide liquid storage tank; a fused calcium carbide granulation device with a rollermechanism, a radiation recovery module and a cooling module are mounted in the heat collector; the waste heat recovery method of the fused calcium carbide one-time cooling granulation forming systemis that: by a conveying device, small calcium carbide blocks which are obtained by the fused calcium carbide granulation device and of which surface layers are cured and heart parts are fused are subjected to cooling and heat recovery respectively through the radiation recovery module and the cooling module, finally, small block calcium carbide finished products which can be directly transported and stored are obtained, and calcium carbide waste heat is recycled by the waste heat recovery device. According to the invention, the fused calcium carbide granulation device is utilized to enable calcium carbide to be directly formed into the small calcium carbide blocks in the cooling process, a crushing process is not required, a heat exchange area between the calcium carbide and a cooling medium is increased, energy consumption can be reduced, dust pollution and powder loss can be avoided, and cooling time is shortened.

Description

technical field [0001] The invention belongs to the field of waste heat recovery of high-temperature calcium carbide liquid, and in particular relates to a primary cooling and granulation molding system for molten calcium carbide and a waste heat recovery method for recovering solidification latent heat and cooling sensible heat of high-temperature molten calcium carbide liquid and simultaneously completing calcium carbide granulation. Background technique [0002] The main component of calcium carbide is calcium carbide, which is an important basic chemical raw material and is mainly used to produce acetylene gas. Also used in organic synthesis, oxyacetylene welding, etc. [0003] In industry, the electric furnace smelting method is generally used to produce calcium carbide. The electric furnace smelting method is to smelt coke and calcium oxide (molecular formula CaO) in an electric furnace at about 2200 ° C to generate calcium carbide (molecular formula CaC2). The tradit...

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Problems solved by technology

[0004] The entire calcium carbide production process is time-consuming and inefficient, and a large amount of waste heat of high-temperature calcium carbide is directly dissipated into the environment without utilization, which not only causes a large loss of energy, but also deteriorates the working environment of the production workshop; the subsequent crushing process adds additional Manpower, material resources, financial resources, poor economy, and a large amount of dust generated during the crushing process has a great impact on the health of workers

[0005] In order to solve the problem of energy waste in the traditional calcium carbide process, the existing molten calcium carbide waste heat recovery technology has proposed solutions such as air-cooled granulation, changing the structure of calcium carbide pots, and using tunnel kilns, but there are still complex system structures and low waste heat recovery efficiency. insufficient

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