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Calcium carbide preparation system and method

A preparation system and technology of calcium carbide, applied in sustainable manufacturing/processing, carbide, chemical industry, etc., can solve the problems of reducing the quality of calcium carbide and increasing energy consumption, so as to reduce the introduction of ash, reduce the consumption of carbon materials, and increase energy The effect of utilization efficiency

Inactive Publication Date: 2016-07-20
SHENWU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the oxythermal method uses carbon-based raw materials for heating, it will inevitably produce a large amount of ash, which will not only increase energy consumption but also reduce the quality of calcium carbide.

Method used

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  • Calcium carbide preparation system and method

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preparation example Construction

[0034] figure 1 Schematic diagram of the composition and structure of the preparation system of calcium carbide provided by the present invention, such as figure 1 As shown, the preparation system includes: raw material pretreatment unit 1, feeding device 2, preheating furnace 3, high temperature conveying device 4 and calcium carbide furnace 5; wherein,

[0035] The raw material pretreatment unit 1 includes a crushing device 11, a mixing device 12 and a molding device 13 connected in sequence; the outlet of the molding device 13 communicates with the inlet of the feeding device 2;

[0036] The outlet of the feeding device 2 communicates with the inlet of the preheating furnace 3;

[0037] The preheating furnace 3 is provided with a solid material outlet 32 ​​and an oil gas outlet 31, and the solid material outlet 32 ​​is connected with the high-temperature conveying device 4;

[0038] The outlet of the high-temperature conveying device 4 communicates with the high-temperatu...

Embodiment 1

[0061] The long-flame coal and quicklime with a particle size of less than 5mm are finely ground and dried by jet mill respectively, and the long-flame coal powder and quicklime powder whose particle size is less than 0.07mm-0.05mm account for more than 90% are respectively obtained. The industrial analysis of flame coal is shown in Table 1. The content of quicklime (CaO) is 92%, and then the long-flame coal powder and quicklime powder are transported into the batching tank through gas. According to the weight ratio, quicklime powder: long-flame coal powder=0.6 :1 for mixing, the mixed powder gas is transported to the molding unit for molding, and the pellets with a particle size of 15×5×10mm are obtained, which are directly transported by the belt to the bunker on the top of the radiant tube rotary hearth furnace, and the vibrating distribution machine is used The material is distributed to the bottom of the rotary hearth furnace with a thickness of 20mm. Then, with the rotati...

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Abstract

The invention discloses a calcium carbide preparation system and method, wherein the calcium carbide preparation system comprises a raw material pretreatment unit, a feeding device, a preheating furnace, a high-temperature conveying device and a calcium carbide furnace, wherein the raw material pretreatment unit comprises a crushing device, a mixing device and a forming device in sequential connection; the crushing device is provided with a raw material inlet; an outlet of the forming device is communicated with an inlet of the feeding device; an outlet of the feeing device is communicated with an inlet of the preheating furnace; the preheating furnace is provided with a solid material outlet and an oil gas outlet; the solid material outlet is connected with the high-temperature conveying device; an outlet of the high-temperature conveying device is communicated with a high-temperature solid material inlet of the calcium carbide furnace; the calcium carbide furnace is provided with the high-temperature solid material inlet, an oxygen inlet, a calcium carbide outlet and a furnace gas outlet; the high-temperature solid material inlet is connected with the solid material outlet; the calcium carbide product is guided out from the calcium carbide outlet; gas generated in the calcium carbide reaction process is guided out from the furnace gas outlet.

Description

technical field [0001] The invention relates to the technical field of calcium carbide production, in particular to a calcium carbide preparation system and method. Background technique [0002] There are two production methods of calcium carbide: aerobic heating method and electrothermal method. At present, electrothermal method is generally used in industry to produce calcium carbide, that is, coke (C) and calcium oxide (CaO) are placed in a calcium carbide furnace, using a fixed bed and relying on arc high temperature (> 2000 ℃ ) melting reaction to generate calcium carbide, the electrothermal method is characterized by the use of bulk raw material feed and the use of electric energy to produce calcium carbide, which has slow reaction rate, long reaction time, high reaction temperature, large power consumption, low calcium carbide output, and dust and exhaust gas control problems. It is precisely because the traditional calcium carbide production technology has the sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/32C01B32/942
CPCY02P20/10
Inventor 董宾丁力郭启海路丙川张顺利张佼阳吴道洪
Owner SHENWU ENVIRONMENTAL TECH CO LTD
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