Unlock instant, AI-driven research and patent intelligence for your innovation.

A preparation method for effectively increasing the output of calcium carbide

A calcium carbide and yield technology, applied in the direction of calcium carbide, carbide, etc., can solve the problems of low efficiency, long kinetic process time, low heat transfer and mass transfer efficiency of raw materials, etc., to improve reaction efficiency and yield, increase contact the effect of broad industrial application prospects

Active Publication Date: 2018-11-06
王宏晓
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above synthesis reaction is a solid-phase endothermic reaction, the heat transfer and mass transfer efficiency of the raw materials is low, and the kinetic process takes a long time. Only when the temperature of the electric furnace reaches 2200 ° C or higher, the coke and calcium oxide begin to chemically react. In the actual production process, the efficiency is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Further illustrate and understand the present invention through embodiment below.

[0030] A preparation method for effectively increasing the output of calcium carbide, comprising the steps of:

[0031] S1. Raw material preparation, lime and high volatile coal are prepared in proportion; the high volatile coal is lignite. The mass ratio of C and CaO in the raw material is: 6.5:10.

[0032] S2. The raw material is dried, and the high volatile coal is circulated and heated by hot steam, dried to form hot dry coal at a drying temperature of 180°C, and cooled to form cold dry coal; specifically, the coal is heated by hot steam to 180°C, and then cooled by cold air, while cooling, the cold air absorbs the heat of high-temperature coal, and the air after absorbing heat can heat the subsequent coal, so that the cycle continues until the coal is dry.

[0033] S3. Grinding of raw materials. Grinding lime and dried coal through a ball mill. The grinding fineness is 50µm-120µm....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
lengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method for effectively improving output of calcium carbide. The preparation method comprises the steps of: preparing lime and high-volatile-matter coal raw materials; drying the coal; grinding, mixing and tabletting the raw materials; and finally, feeding the raw materials into an electromagnetic furnace for reaction, wherein the reaction is performed according to a chemical reaction CaO+C-CaC2. The preparation method disclosed by the invention has the advantages that compared with the prior art, the reaction can be performed in a low-temperature state; along with temperature rise, the reaction is accelerated, so that the output is improved by over one time, and the production cost of calcium carbide is lowered to a great extent.

Description

technical field [0001] The invention relates to a method for preparing calcium carbide, which can effectively increase the output of calcium carbide. Background technique [0002] Calcium carbide is an important chemical raw material, mainly used to produce acetylene gas, and also used in organic synthesis, oxyacetylene welding, etc. The electric furnace smelting method and the oxythermal method are generally used in industry. Among them, the electric furnace smelting method is to smelt coke and calcium oxide (molecular formula CaO) in an electric furnace at about 2200 ° C to form calcium carbide (molecular formula CaC 2 ). The above synthesis reaction is a solid-phase endothermic reaction, the heat transfer and mass transfer efficiency of the raw materials is low, and the kinetic process takes a long time. Only when the temperature of the electric furnace reaches 2200 ° C or higher, the coke and calcium oxide begin to chemically react. In the actual production process, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/942
Inventor 王宏晓
Owner 王宏晓