Method for using carbide slag for material circulation system in carbide industry

A circulation system and carbide slag technology, applied in the petroleum industry, carbide, solid waste removal, etc., can solve problems that cannot be solved fundamentally, and achieve the effect of reducing production costs

Inactive Publication Date: 2010-08-18
王嘉兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the rolling calcium carbide slag, it cannot fundamentally solve the problem

Method used

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  • Method for using carbide slag for material circulation system in carbide industry
  • Method for using carbide slag for material circulation system in carbide industry
  • Method for using carbide slag for material circulation system in carbide industry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: 1000 kg of newly discharged calcium carbide slag is dehydrated by a centrifuge (3) to form dry calcium carbide slag with a water content of 20%, and then sent to a pressure forming machine (4) for extrusion molding, and then put into a calciner Carry out calcining in (5), make calcium carbide slag strong dehydration decomposition, and calcining temperature is 580 ℃; Calcining 4.5 hours, after cooling, only 58% pure substance remains, take out and obtain 580kg calcium oxide product (13), The calcium oxide product (13) is taken out, and after being pulverized by the pulverizer (6), it is sent to the calcium carbide calcining workshop for recycling.

[0023] Put 500kg of calcium oxide calcined in the calcium carbide calcination workshop and coke powder into the agitator (7) according to the ratio of pure substance mass to 1:0.44 and stir evenly, then press and form in the pressure molding machine (8), and feed into Carry out calcining in a closed electric fur...

Embodiment 2

[0024] Embodiment 2: 1000kg of newly discharged calcium carbide slag is dehydrated by a centrifuge (3) to form dry calcium carbide slag with a water content of 30%, and then sent to a pressure molding machine (4) for extrusion molding, and then put into a calciner Carry out calcining in (5), make calcium carbide slag strong dehydration decomposition, and calcining temperature is 650 ℃; Calcining 6 hours, after cooling, only 54% pure substance remains, take out and obtain 540kg calcium oxide product (13), The calcium oxide product (13) is taken out, and after being pulverized by the pulverizer (6), it is sent to the calcium carbide calcining workshop for recycling.

[0025] Put 500kg of calcined calcium oxide and coke powder calcined in the calcium carbide calcination workshop into the agitator (7) according to the ratio of pure substance mass to 1:0.84 and stir evenly, then press and form in the pressure molding machine (8), and feed into Carry out calcining in a closed electr...

Embodiment 3

[0026] Embodiment 3: 1000 kg of newly discharged calcium carbide slag is dehydrated by a centrifuge (3) to form dry calcium carbide slag with a water content of 25%, and then sent to a pressure forming machine (4) for extrusion molding, and then put into a calciner Carry out calcining in (5), make calcium carbide slag strong dehydration decompose, calcining temperature is 600 ℃; Calcining 5 hours, after cooling, only 56% pure substance remains, take out and obtain 560kg calcium oxide product (13), The calcium oxide product (13) is taken out, and after being pulverized by the pulverizer (6), it is sent to the calcium carbide calcining workshop for recycling.

[0027] Put 500kg of calcium oxide calcined in the calcium carbide calcination workshop and coke powder into the agitator (7) according to the ratio of pure substance mass to 1:0.64 and stir evenly, then press and form in the pressure molding machine (8), and feed into Carry out calcining in a closed electric furnace (9), ...

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Abstract

The invention discloses a method for using carbide slag for a material circulation system in carbide industry. When the carbides are synthesized in carbide industry, and calcium oxides need to be calcined in a calcium oxide-consuming shop (1) in a carbide-calcining shop; and when acetylene is produced in polyvinyl chloride industry, the carbides need to be hydrolyzed to produce carbide slag, the carbide slag is calcined into calcium oxides in a calcium oxide-producing shop (2), and sequentially, the calcium oxides are returned to the carbide shop for synthesizing carbide by calcination. By using the organic circulation system for discharging waste in carbide industry, the method reduces the production cost of the carbide, and avoids the discharge of the carbide slag, thereby basically solving the problem of carbide slag waste in carbide industry, and making great contribution to environmental protection.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of three wastes, in particular to a method for using calcium carbide slag in a material circulation system of the calcium carbide industry. Background technique [0002] Calcium carbide, the chemical name is calcium carbide, and the molecular formula is CaC2. It is the basic raw material for the production of organic synthetic chemical industry. The main components of industrial calcium carbide are calcium carbide, free calcium oxide, carbon, silicon, magnesium, iron, aluminum compounds and a small amount of phosphide and sulfide. The chemical properties of calcium carbide are very active, and it will be violently decomposed by water to produce acetylene gas and calcium hydroxide, and release a lot of heat. [0003] At present, with the rise of international oil prices and the increase of domestic demand for polyvinyl chloride, the calcium carbide industry has developed rapidly,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/02B09B3/00C01B31/32C10H21/00C01B32/942
Inventor 王嘉兴
Owner 王嘉兴
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