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Method for synchronously obtaining carbon dioxide absorbent along with production of acetylene

A technology of carbon dioxide and simultaneous acquisition, applied in chemical instruments and methods, separation methods, reagents, etc., can solve the problems of large attenuation coefficient of absorbent, ineffective utilization, carbide slag pollution, etc., to avoid carbon dioxide problems, alleviate sintering, widen The effect of the application foreground

Inactive Publication Date: 2014-07-23
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Based on the above-mentioned methods of using natural calcium oxide-based absorbents such as limestone to absorb carbon dioxide in a circular manner, there are problems such as low environmental benefits, large attenuation coefficient of absorbents, and problems that carbide slag, as industrial waste, pollutes the environment and cannot be effectively utilized. The present invention uses comprehensive treatment, Starting from improving environmental benefits, a method of synchronously obtaining carbon dioxide absorbent with acetylene production is proposed

Method used

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  • Method for synchronously obtaining carbon dioxide absorbent along with production of acetylene
  • Method for synchronously obtaining carbon dioxide absorbent along with production of acetylene

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Effect test

Embodiment 1

[0035] The method for synchronously obtaining a carbon dioxide absorbent with the production of acetylene described in this embodiment specifically includes the following steps, such as figure 2 Shown:

[0036] (1) Add alumina, calcium carbide, and water into the reactor at the same time, wherein the mass ratio of alumina to calcium carbide is 7:100, and the mass ratio of water to calcium carbide is 350:100. After fully reacting, the mixture of calcium carbide and slurry is obtained. ;

[0037] (2) Dehydrate the calcium carbide slag slurry mixture obtained in step (1), and then dry it at a constant temperature at 100 °C for 24 hours to obtain solid carbide slag;

[0038] (3) The solid carbide slag obtained in step (2) was calcined in a muffle furnace at a constant temperature of 850 °C for 2 h to obtain a carbon dioxide absorbent.

[0039] Compared with the existing method for preparing acetylene by using calcium carbide, the yield of acetylene prepared by the method of the...

Embodiment 2

[0044] The method for synchronously obtaining a carbon dioxide absorbent with the production of acetylene described in this embodiment specifically includes the following steps:

[0045] (1) Add alumina, calcium carbide, and water into the reactor at the same time, wherein the mass ratio of alumina to calcium carbide is 15:100, and the mass ratio of water to calcium carbide is 1000:100. After fully reacting, a mixture of calcium carbide slag slurry is obtained ;

[0046] (2) Dehydrate the mixture of carbide slag slurry obtained in step (1), and then dry it at a constant temperature of 110 °C for 12 hours to obtain solid carbide slag;

[0047] (3) The solid carbide slag obtained in step (2) was calcined in a muffle furnace at a constant temperature of 900 °C for 1 h to obtain a carbon dioxide absorbent.

[0048] Compared with the existing method for preparing acetylene by using calcium carbide, the yield of acetylene prepared by the method of the invention is increased by 6.28...

Embodiment 3

[0053] The method for synchronously obtaining a carbon dioxide absorbent with the production of acetylene described in this embodiment specifically includes the following steps:

[0054] (1) Add aluminum hydroxide, calcium carbide, and water into the reactor at the same time, wherein the mass ratio of aluminum hydroxide to calcium carbide is 20:100, and the mass ratio of water to calcium carbide is 350:100. After fully reacting, calcium carbide slurry is obtained mixture;

[0055] (2) Dehydrate the calcium carbide slag slurry mixture obtained in step (1), and then dry it at a constant temperature at 102 °C for 14 hours to obtain solid carbide slag;

[0056] (3) The solid carbide slag obtained in step (2) was calcined in a muffle furnace at a constant temperature of 860 °C for 1.2 h to obtain a carbon dioxide absorbent.

[0057] Compared with the existing method for preparing acetylene by using calcium carbide, the yield of acetylene prepared by the method of the invention is ...

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Abstract

The invention discloses a method for synchronously obtaining a carbon dioxide absorbent along with production of acetylene and belongs to the technical fields of recycling of industrial base solid wastes and low-carbon environmental protection. The method disclosed by the invention comprises the following steps: simultaneously adding aluminum oxide (Al2O3) or aluminum hydroxide (Al(OH)3) or aluminum nitrate nonahydrate (Al(NO3)3.9H2O), carbide and water into an acetylene generator for full reaction, dehydrating an obtained carbide slag slurry mixture, and then calcining to obtain the carbon dioxide absorbent. The method disclosed by the invention fully utilizes the process characteristics of production of the acetylene by a carbide hydrolysis method; by adding an appropriate amount of aluminum oxide or aluminum hydroxide or aluminum nitrate nonahydrate material, and performing simple drying and calcination process, the carbon dioxide absorbent with high absorption capacity and good cyclic stability can be obtained, and the method has important significance in the field of low-carbon environmental protection; and the invention further provides a novel treatment and disposal method of base solid waste carbide slag produced by production of the acetylene by hydrolysis of the carbide.

Description

technical field [0001] The invention relates to a method for synchronously obtaining a carbon dioxide absorbent along with acetylene production, and belongs to the fields of solid waste recycling and low-carbon environmental protection. Background technique [0002] Carbon dioxide is the most important man-made greenhouse gas, and its total emissions increased by about 80% between 1970 and 2004. The increase in the concentration of carbon dioxide in the atmosphere leads to global warming, which has a series of negative effects on the natural environment and human society. Therefore, the issue of carbon dioxide has attracted widespread attention from the international community. According to the data provided by the United Nations Intergovernmental Panel on Climate Change (IPCC), the global average annual carbon dioxide emissions from fixed sources (the scale of carbon dioxide emissions ≥ 0.1 Mt) is 13.47 Gt, of which the carbon dioxide emissions from coal-fired power plants ...

Claims

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Application Information

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IPC IPC(8): C07C11/24C07C1/00B01D53/81B01D53/62
CPCY02P20/151
Inventor 张登峰
Owner KUNMING UNIV OF SCI & TECH
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