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Calcium carbide furnace and method for preparing calcium carbide

A technology of calcium carbide furnace and calcium carbide, which is applied in the direction of carbide, calcium carbide, etc., can solve the problems that calcium carbide needs to be improved, and achieve the effect of improving efficiency and effect

Active Publication Date: 2016-08-24
SHENWU ENVIRONMENTAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current technology for preparing calcium carbide still needs to be improved

Method used

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  • Calcium carbide furnace and method for preparing calcium carbide
  • Calcium carbide furnace and method for preparing calcium carbide
  • Calcium carbide furnace and method for preparing calcium carbide

Examples

Experimental program
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Effect test

Embodiment 1

[0067] There are 15 sets of electric heating plates in the calcium carbide furnace, the heating plates are inclined at 15 degrees relative to the ground, and the maximum working temperature of the heating plates is 1000 degrees Celsius.

[0068] Carbon-based raw materials: Taking a medium and low-rank raw coal as an example, its main properties are shown in Table 1.

[0069] Table 1 Main properties of carbon-based raw materials

[0070] project

unit

value

Remark

whole water

wt%

13.7

Receive base

fixed carbon

wt%

54.1

dry basis

Volatile matter

wt%

39.4

dry basis

Ash

wt%

6.5

dry basis

[0071] Calcium-based raw material: it can be one or a mixture of lime, limestone, slaked lime or carbide slag. In this embodiment, the calcium-based material fed into the calcium carbide furnace is lime with a CaO content of 92.4%.

[0072] Raw material particle size: 0.6mm.

[0073] Carbon-based...

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Abstract

The invention discloses a calcium carbide furnace and a method for preparing calcium carbide. The calcium carbide furnace comprises a pyrolytic reaction region and a calcium carbide reaction region from top to bottom, a plurality of heating boards, a heating channel, a material inlet, an oxygen-containing gas inlet and a calcium carbide outlet, wherein some heating boards are arranged on the first side wall of the calcium carbide furnace, the other heating boards are arranged on the second side wall opposite to the first side wall, the heating boards located on the first side wall and the heating boards located on the second side wall are distributed in a staggered mode, and the heating channel applicable to material heating is defined by the heating boards jointly. Medium and low order raw coal can be subjected to upgrading through a pyrolytic reaction in the pyrolytic reaction region, and the heating boards arranged inside the pyrolytic reaction region can improve the pyrolytic efficiency and effect of the pyrolytic reaction region.

Description

technical field [0001] The invention relates to the field of chemical industry. Specifically, the present invention relates to calcium carbide furnaces and methods for preparing calcium carbide. Background technique [0002] The scientific name of calcium carbide is calcium carbide, a colorless crystal, which is mainly used to produce acetylene gas. It was once called "the mother of organic synthesis industry". Acetylene is an important chemical raw material, mainly used in the production of polyvinyl chloride and vinyl acetate products. Acetylene, the raw material for 70% of PVC products in my country, comes from calcium carbide, which plays a very important role in the economic development of our country. In the past ten years In 2013, the output reached more than 22 million tons. [0003] However, the current technology for preparing calcium carbide still needs to be improved. Contents of the invention [0004] The present invention aims at solving one of the technica...

Claims

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Application Information

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IPC IPC(8): C01B31/32C01B32/942
Inventor 张顺利赵小楠郑倩倩路丙川刘维娜张佼阳吴道洪
Owner SHENWU ENVIRONMENTAL TECH CO LTD
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