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Production method and production equipment for small piece of calcium carbide

A production method and production equipment technology, applied in the calcium carbide method PVC production field, can solve problems such as calcium carbide dust, achieve the effects of reducing pollution, reducing production costs, and improving the working environment

Inactive Publication Date: 2015-01-21
ELION RESOURCE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the problem of a large amount of calcium carbide dust produced by the crushing process, the present invention provides a production method and equipment for small pieces of calcium carbide that are directly used in the acetylene generator without crushing

Method used

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  • Production method and production equipment for small piece of calcium carbide
  • Production method and production equipment for small piece of calcium carbide
  • Production method and production equipment for small piece of calcium carbide

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Embodiment 1

[0029] Such as figure 1 Shown, be the production process flowchart of small calcium carbide of the present invention, this method may further comprise the steps:

[0030] 1) Add mud balls (made from red clay in Dalat Banner, Inner Mongolia) with a water content of about 10% (w / w) in the calcium carbide furnace (the furnace hole is blocked), and the quality standard is to fix carbon > 82%, volatilize Anthracite 3500μΩM, particle size 5-25mm, maximum 30mm anthracite and quality standard CaO≥90%, MgO≤ 1.8%, SiO 2 ≤1.1%, quicklime with a particle size of 10-50mm;

[0031] 2) The anthracite and quicklime react under high temperature environment to generate calcium carbide slurry (carbon and calcium oxide undergo a chemical reaction to generate calcium carbide);

[0032] 3) The calcium carbide slurry is injected into a small trapezoidal mold under the condition of heat and oxygen insulation, and cooled to shape.

[0033] Wherein in the above step 2), the anthracite and quicklime...

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Abstract

The invention discloses a production method and production equipment for a small piece of calcium carbide. The production method comprises the following steps: adding anthracite coal and unslaked lime into a calcium carbide furnace; enabling the anthracite coal to react with the unslaked lime at high temperature, thereby generating a calcium carbide slurry; injecting the calcium carbide slurry into a small trapezoid die under the thermal-insulating and oxygen-isolating condition; and molding in a cooling manner. The production equipment comprises the calcium carbide furnace, a caterpillar band and a calcium carbide slurry scraping plate, wherein a discharge port is formed at the lower end of the calcium carbide furnace; the caterpillar band is positioned at the facade lower end of the discharge port and is driven by a driving wheel to move; and the calcium carbide slurry scraping plate is positioned at the upper end of the caterpillar band in parallel and can be lifted vertically. For the small piece of the produced calcium carbide, the particle diameter is from 50mm to 80 mm, and the gas generating volume is above 285 L / kg, so that the calcium carbide can be directly led into an acetylene generator for utilization, i.e., the crushing of the calcium carbide is avoided. In addition, the dust capacity of the calcium carbide can be reduced by more than 80%. Therefore, the problem that the environmental pollution caused by the accumulation of a great quantity of dust at any place is solved.

Description

technical field [0001] The invention relates to a production method and equipment of small calcium carbide, belonging to the field of calcium carbide production of PVC. Background technique [0002] Before 2003, my country's PVC industry was in a stable development situation where the ethylene method and the calcium carbide method coexisted. As the price of international crude oil continues to rise, and my country is a country with more coal and less oil, the PVC process of calcium carbide method shows explosive growth. From 2003 to 2008, the output of calcium carbide method PVC increased by an average of 31% per year. In 2011, my country's PVC production capacity has exceeded 20 million tons, of which calcium carbide PVC accounted for 75%. [0003] The main raw material for the production of PVC by the calcium carbide method is calcium carbide. The calcium carbide must be crushed into small calcium carbide blocks with a particle size of 50-80 mm by the primary and secondar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/36C01B32/942
Inventor 王枫陈步宁吕滨王建伟王浩然张树峰赵姣姣
Owner ELION RESOURCE GROUP
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