Method for simultaneously producing acetylene stones, ferrosilicium and high-purity CO gas

A high-purity, calcium carbide technology, applied in the direction of carbon monoxide, process efficiency improvement, carbide, etc., can solve problems such as methods that have not been reported, and achieve the effects of saving investment, efficient investment, and reasonable process combination

Inactive Publication Date: 2009-02-11
SHENGHE RESOURCES HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The method of simultaneously producing calcium carbid

Method used

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  • Method for simultaneously producing acetylene stones, ferrosilicium and high-purity CO gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Now the volume is 28m 3 The vertical furnace is taken as an example to introduce the implementation steps of the present invention. Centrifugal blower air volume 240Nm 3 / min, the outlet pressure is 0.25MPa. The air separation unit adopts the cryogenic process, the dust collector adopts the electric precipitator, the acid gas removal adopts the MDEA process, and the fine desulfurization adopts Fe 2 o 3 Dry desulfurization technology.

[0042] 1. Raw materials used:

[0043] (1), Limestone: CaCO 3 Content 97%, S=0.01%, MgO+Fe 2 o 3 +Al 2 o 3 = 1.13%.

[0044] (2), coke: FC ad =86.6%, A d = 10.3%, S t，d =0.72%, P t，d = 0.04%.

[0045] (3) Steel shavings: Fe content = 95.0%, Si = 1.50%, Mn = 0.24%, P = 0.05%, S = 0.07%, C = 3.14%.

[0046] (4), Oxygen: Oxygen content 99.6%, containing N 2 0.4%.

[0047] 2. Calculation basis:

[0048] (1) The ambient temperature is 20°C.

[0049] (2), CO 2 The actual coefficient of reaction with C is 95%.

[0050] (3),...

Embodiment 2

[0076] The production device is the same as in Example 1, and the calculation basis remains unchanged. The air separation unit adopts the PSA oxygen production process, the dust collector adopts the cyclone dust collector + bag filter, the acid gas removal adopts the low-temperature methanol washing (Rectisol) process, and the fine desulfurization adopts the zinc oxide dry desulfurization technology.

[0077] 1. Raw materials used:

[0078] (1), quicklime: CaO content 94%, MgO=0.5%, Fe 2 o 3 +Al 2 o 3 = 0.59%, SiO 2 = 0.81%, raw combustion amount CO 2 =2.49%, H 2 O=0.8, others 0.81.

[0079] (2), coke: FC ad =86.6%, A d = 10.3%, S t，d =0.72%, P t，d = 0.04%.

[0080] (3) Steel shavings: Fe content = 95.0%, Si = 1.50%, Mn = 0.24%, P = 0.05%, S = 0.07%, C = 3.14%.

[0081] (4), Oxygen: Oxygen content 99.6%, containing N 2 0.4%.

[0082] 2. Implementation process:

[0083] After the quicklime, coke and other raw materials are crushed and screened to a qualified par...

Embodiment 3

[0105] The production device is the same as in Example 1, and the calculation basis remains unchanged. The air separation unit adopts the cryogenic oxygen production process, the dust collector adopts the cyclone dust collector + bag filter, the acid gas removal adopts the polyethylene glycol dimethyl ether (NHD) method, and the fine desulfurization adopts the molecular sieve dry desulfurization technology.

[0106] 1. Raw materials used:

[0107] (1), calcareous raw material: the quicklime of 50% limestone+50%, limestone quality is with embodiment 1, and quicklime quality is with example 2.

[0108] (2), coke: FC ad =86.6%, A d = 10.3%, S t，d =0.72%, P t，d = 0.04%.

[0109] (3) Steel shavings: Fe content = 95.0%, Si = 1.50%, Mn = 0.24%, P = 0.05%, S = 0.07%, C = 3.14%.

[0110] (4), Oxygen: Oxygen content 99.6%, containing N 2 0.4%.

[0111] 2. Implementation process:

[0112] After the calcareous raw material and coke are crushed and screened to a qualified particl...

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Abstract

A method for simultaneously producing calcium carbide, ferrosilicon and high-purity CO gas is characterized in that: an oxygen heating process is adopted, a calcareous material, a carbon material and steel scrap or a ferrous waste are taken as raw materials, self-produced CO gas is taken as a fuel. The method has obvious advantages of no greenhouse gases emission, reasonable process combination, simple process flow, low consumption of energy and water, high efficiency and low cost.

Description

technical field [0001] The invention relates to a method for simultaneously producing calcium carbide, ferrosilicon and high-purity CO gas. Background technique [0002] The main component of calcium carbide is CaC 2 , is an important raw material in the organic synthesis industry and plays an important role in the chemical industry. The methods for producing calcium carbide mainly include electrothermal method and oxythermal method. At present, the electrothermal method is used in the industrial production of calcium carbide. This method has a history of more than 110 years. A large amount of electric energy is consumed, generally 3500-3800kWh / t of calcium carbide, and the comprehensive energy consumption is very high, which is not conducive to energy saving and sustainable development of society. [0003] The production of calcium carbide by oxythermal method is still in the experimental stage. There are a large number of literature reports on the production of calcium c...

Claims

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Application Information

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IPC IPC(8): C01B31/32C01B31/18C21B15/00C01B32/942C01B32/40
CPCY02P10/20Y02P20/129
Inventor 杜文广刘守军程加林何小刚张智聪
Owner SHENGHE RESOURCES HLDG CO LTD
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