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High temperature reduced type composite fire coal sulfur fixing agent and preparation method thereof

A reducing type, sulfur-fixing agent technology, used in fuel, solid fuel, petroleum industry and other directions, can solve the problems of easy secondary decomposition of sulfur-fixing products, failure to achieve emission reduction targets, etc., achieving easy operation, low total cost, low price effect

Inactive Publication Date: 2011-09-21
王国群 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the common disadvantage is that the sulfur-fixed products are easy to decompose twice under high temperature conditions, and the sulfur-fixed rate is only about 20%, which cannot reach the emission reduction target.

Method used

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  • High temperature reduced type composite fire coal sulfur fixing agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Raw materials: take by weight 40% CaO, 10% FeCl 2 , 5% NaCl, 5% Na 2 CO 3 and 40% triethanolamine, CaO, FeCl 2 , NaCl, Na 2 CO 3 The solid matter is made into 100 mesh fine powder for subsequent use.

[0023] Preparation: Hydrolyze CaO into Ca(OH) at 1:1 2 Dry in the air, bake in an oven at 95°C for 2 hours to cool, add FaCl 2 , NaCl, Na 2 CO 3 Mix it with triethanolamine evenly, add water equal to the weight of the mixture, put it in a blender and stir it thoroughly, then pack it in a container and serve. When in use, it can be sprayed on the coal according to 1% of the weight of the coal.

Embodiment 2

[0025] Raw materials: weigh 50% CaO and 10% FeCl by weight 2 , 3% NaCl, 7% Na 2 CO 3 and 30% triethanolamine, CaO, FeCl 2 , NaCl, Na 2 CO 3 The solid matter is made into 100 mesh fine powder for subsequent use.

[0026] Preparation: Hydrolyze CaO into Ca(OH) at 1:1 2 Dry in the air, bake in an oven at 98°C for 2 hours to cool, add FaCl 2 , NaCl, Na 2 CO 3 Mix it with triethanolamine evenly, add water equal to the weight of the mixture, put it in a blender and stir it thoroughly, then pack it in a container and serve. When in use, it can be sprayed on the coal according to the amount of 5% of the coal burning weight.

Embodiment 3

[0028] Raw materials: take by weight 60% CaO, 14% FeCl 2 , 1% NaCl, 5% Na 2 CO 3 and 20% triethanolamine, CaO, FeCl 2 , NaCl, Na 2 CO 3 The solid matter is made into 100 mesh fine powder for subsequent use.

[0029] Preparation: Hydrolyze CaO into Ca(OH) at 1:1 2 Dry in the air, bake in an oven at 102°C for 2 hours and let it cool, add FaCl 2 , NaCl, Na 2 CO 3 Mix it with triethanolamine evenly, add water equal to the weight of the mixture, put it in a blender and stir it thoroughly, then pack it in a container and serve. When in use, it can be sprayed on the coal according to the amount of 5% of the coal burning weight.

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Abstract

The invention discloses a high temperature reduced type composite fire coal sulfur fixing agent and a preparation method thereof. The agent comprises a main agent, an auxiliary agent and water, wherein the weight percentage of the main agent CaO is 40 to 70 percent, the weight percentage of the auxiliary agents FeCl2, NaCl, Na2CO3 and triethanolamine respectively is 10 to 15 percent, 1to 5percent, 5 to 10 percent and 10 to 40 percent and the weight of the water is the sum of the weight of the main agent and auxiliary agents. When the agent is prepared, firstly the solids of the main agent andthe auxiliary agents are prepared into powders sieved through a 100-mesh sieve, CaO is hydrolyzed into Ca(OH)2 at a ratio of 1 to 1, Ca(OH)2 is dried and baked in a baking oven for 2 hours at a temperature of 5 DEG C more or less than 100 DEG C and is left for cooling, FeCl2, NaCl, Na2CO3 and triethanolamine are added in the cool Ca(OH)2 and the mixture is uniformly mixed, water having a same weight with the mixture is added and a stirrer is used to fully stir the mixture and the mixture is divided to be contained in containers to obtain the agent. When the agent is used, the agent is sprinkled at the fire coal at an amount of 1 to 5 percent of the weight of the fire coal.

Description

technical field [0001] The invention relates to a coal-burning sulfur-fixing agent, in particular to a high-temperature reduction composite coal-burning sulfur-fixing agent and a preparation method thereof. Background technique [0002] In my country's coal production, high-sulfur coal production accounts for about 20% of the country's total coal production. With the continuous growth of coal consumption, the emission of sulfur dioxide from coal combustion is also increasing, leading to the increasingly serious pollution of acid rain and sulfur dioxide in our country. In the "Twelfth Five-Year" development plan, the country puts forward higher and stricter requirements on sulfur emissions, and stipulates specific emission reduction targets for governments at all levels and industries. Therefore, the development and application of sulfur fixation technology is particularly important. In recent years, many studies at home and abroad have shown that the key to improving the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10
Inventor 王国群周震庭王骏王国秋董明贤王赤华
Owner 王国群