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Method for preparing ethylene from calcium carbide through wet process

A calcium carbide and wet process technology, applied in the direction of calcium carbide composition of generators, parts of acetylene gas generators, acetylene generators, etc., can solve the problems of high reaction temperature and high energy consumption

Inactive Publication Date: 2012-02-22
TIANJIN TAIYUAN INDAL GAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The problem to be solved by the present invention is to overcome the deficiencies of the prior art, the reaction temperature of the prior art is high, and the energy consumption is high

Method used

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  • Method for preparing ethylene from calcium carbide through wet process
  • Method for preparing ethylene from calcium carbide through wet process
  • Method for preparing ethylene from calcium carbide through wet process

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0037] Using quicklime and coke as raw materials, sticking and sintering with electrode paste to form electrodes, the raw materials are melted at a high temperature of 2000℃ in an electric furnace to generate CaC2. 1kg of calcium carbide needs to be added with 10kg of water, see details figure 1 .

Embodiment 2

[0039] Using quicklime and coke as raw materials, sticking and sintering with electrode paste to form electrodes, the raw materials are melted at a high temperature of 2500℃ in an electric furnace to generate CaC2. 1kg of calcium carbide needs to be added with 20kg of water, see details figure 1 .

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Abstract

The invention discloses a technology for preparing ethylene from calcium carbide through a wet process. Quick lime and coke are taken as raw materials, an electrode paste is used for adhering and is sintered into electrodes, and the raw materials are fused at high temperature of between 2,000 and 2,500DEG C in an electric furnace to form CaC2. The method is carried out in a wet acetylene generator, and a great amount of reaction heat is moved by means of excessive water. Theoretically, when the calcium carbide forms the ethylene, 1kg of calcium carbide requires 0.562kg of water; and actually, 1kg of calcium carbide requires 10 to 20kg of water.

Description

Technical field [0001] The invention relates to a chemical product, in particular to a technique for preparing acetylene by a calcium carbide wet method, which is suitable for the production of acetylene. Background technique [0002] Acetylene can be used for lighting, welding and cutting metal (oxyacetylene flame), and it is also the basic raw material for the manufacture of acetaldehyde, acetic acid, benzene, synthetic rubber, and synthetic fibers. [0003] Pure acetylene is a colorless and odorless gas. The acetylene produced from calcium carbide contains phosphine, arsine, hydrogen sulfide and other impurities and has a special pungent garlic smell and toxicity; it cannot be liquefied under normal pressure, and its sublimation point is -83.8℃, under the pressure of 1.19×105Pa, the melting point is -81℃; flammable and explosive, the explosion limit in the air is very wide, 2.5% to 80%; insoluble in water, easily soluble in petroleum ether, ethanol, benzene Other organic solven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10H21/00C10H21/10
Inventor 原东凤
Owner TIANJIN TAIYUAN INDAL GAS
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