Novel multilevel heat source calcium carbide production technique and device

A new technology, calcium carbide technology, applied in the field of multi-stage heat source calcium carbide production new technology and equipment, can solve the problems of low output, high energy consumption, etc., and achieve the effect of high output, low energy consumption, and fast reaction speed

Inactive Publication Date: 2008-05-07
长沙紫宸科技开发有限公司
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problems of high energy consumption and low output in the existing electrothermal calcium carbide production and oxygen thermal calcium carbi

Method used

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  • Novel multilevel heat source calcium carbide production technique and device
  • Novel multilevel heat source calcium carbide production technique and device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] The vertical furnace used for the test is Φ1.0×5.7m (the height from the bottom of the furnace to the bell mouth is 5.7m, and the diameter of the lower part of the bell mouth is Φ1.0m).

[0034] The raw materials used in the test are limestone, calcium carbide slag, anthracite coal, additives, limestone CaO content 54.2%, calcium carbide slag dry basis CaO content 69.9%, water 35%, anthracite volatile content 8.7%, ash 11.4%, low calorific value 6953 ×4.18kJ / kg, the additive adopts the existing calcium carbide to produce ZC-1 type special additive.

[0035] Test 1: Using the above-mentioned limestone: anthracite: additives according to the weight ratio: 1.5:1:0.1, crushed and ground to a fineness of 0.08mm with a sieve residue of 18-22% of the dry powder, and added an appropriate amount of water to plasticize it with The roller extrusion molding machine is shaped into a Φ12mm bar, which is continuously fed into the vertical furnace. The middle part of the vertical furnace i...

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Abstract

A novel processing art and a device for producing calcium carbide with multi-level heat sources adopts an erect furnace with heat supply by oxidizing and burning at the middle-upper part and heat supply by an electric furnace at the lower part; wherein, materials are added from the upper part and pre-heated, decomposed, partially melted, performed the melting reaction, purified by the calcium carbide, discharged by calcium carbide liquid from up to down under the effect of the gravity. The upper part of the erect furnace can be supplied with pre-heating air or oxygen-rich air by a wind supplier to oxidize and burn to raise the temperature in the furnace up to over 1400 DGE C; and the lower part of the erect furnace is mainly supplied with heat sources by the electric furnace to raise the temperature up to between 1800 DGE C and 2400 DGE C. The invention can feed and unload the materials continuously, with high yield, low investment, low energy consumption, and high-tenor calcium carbide.

Description

Technical field: [0001] The invention relates to a method and a device for preparing calcium carbide, in particular to a new energy-saving process for preparing calcium carbide using a vertical furnace using calcareous materials and carbonaceous materials and adopting a multi-stage heat source. Background technique: [0002] The task of calcium carbide production is to reduce the calcareous raw material to CaC by using carbon as a reducing agent. 2 The process of calcium carbide production requires the minimum input to obtain the maximum output, that is, to achieve high yield, high quality, energy saving, low consumption, environmental protection, and good economic benefits. [0003] The existing calcium carbide production process at home and abroad can be summarized as electrothermal calcium carbide production process and oxygen thermal calcium carbide production process. At present, all production uses electrothermal calcium carbide production, and its power consumption is...

Claims

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Application Information

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IPC IPC(8): C01B31/32C01B32/942
CPCY02P20/129
Inventor 尹小林
Owner 长沙紫宸科技开发有限公司
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