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Pulverized coal sulfur fixing, freeze preventing and coarsening agent, preparation method and application method thereof

The technology of an antifreeze and a coarsening agent is applied in the field of sulfur-fixing, antifreezing and coarsening agent and its preparation. Effect

Inactive Publication Date: 2013-05-22
赵志文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the prior art cannot simultaneously realize pulverized coal sulfur fixation, antifreeze and coarsening, and to provide a pulverized coal sulfur fixation antifreeze coarsening agent and its preparation method and use method

Method used

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specific Embodiment approach 1

[0011] Embodiment 1: This embodiment is a pulverized coal sulfur-fixed antifreeze coarsening agent, which is composed of a separately packaged composite sulfur-fix antifreeze agent and a separately packaged bonding and penetrating agent.

[0012] The individually packaged composite sulfur-fixing antifreeze described in this embodiment is mixed with the separately packaged bonding and penetrating agent at a mass ratio of 100: (1 to 2); wherein the composite sulfur-fixing antifreeze consists of 45 parts by weight ~55 parts of slaked lime, 33~43 parts of bentonite, 10~15 parts of calcium chloride and 2~4 parts of sodium tetraborate are mixed; wherein the bonding and penetrating agent consists of 50~60 parts of carboxymethyl Sodium starch, 40-50 parts of sodium humate and 0.2-0.6 parts of sodium dodecylbenzenesulfonate are mixed.

[0013] The slaked lime described in this embodiment is used as a calcium-based sulfur-fixing agent in the composite sulfur-fixing antifreeze agent, bec...

specific Embodiment approach 2

[0020] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the described composite sulfur-fixing antifreeze consists of 47 to 53 parts of slaked lime, 35 to 41 parts of bentonite, and 10 to 14 parts of calcium chloride in parts by weight. It is mixed with 2 to 3.5 parts of sodium tetraborate. Others are the same as the first embodiment.

specific Embodiment approach 3

[0021] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the described bonding penetrating agent consists of 52 to 58 parts by weight of sodium carboxymethyl starch, 42 to 48 parts of humic acid Sodium and 0.3 to 0.5 parts of sodium dodecylbenzenesulfonate are mixed. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a pulverized coal sulfur fixing, freeze preventing and coarsening agent, a preparation method and an application method thereof, and aims to solve the problems that the prior art cannot realize pulverized coal sulfur fixing, freeze preventing and coarsening at the same time. The pulverized coal sulfur fixing, freeze preventing and coarsening agent consists of a composite sulfur fixation antifreezing agent and a bonding penetrant which are separately packaged. The preparation method comprises the following steps of: 1, preparing a separate package, i.e. the composite sulfur fixation antifreezing agent; and 2, preparing the separate package, i.e. the bonding penetrant. The application method specifically comprises the following steps of: adding the composite sulfur fixation antifreezing agent at first, dissolving the bonding penetrant into water to prepare bonding penetrant aqueous solution, and then, adding the bonding penetrant aqueous solution to stir uniformly. The methods are mainly used for preparing and applying the pulverized coal sulfur fixing, freeze preventing and coarsening agent.

Description

technical field [0001] The invention relates to a sulfur-fixing antifreeze roughening agent and a preparation method and application method thereof. Background technique [0002] my country is a big consumer of coal energy. Except for coal for electricity, the vast majority of power coal is used in bed-fired boilers. Coal used in bed fired boilers is generally a mixture of pulverized coal and lump coal, of which pulverized coal accounts for about 60%-70%. The country has clear standards for the coal particle size of the bed-fired boiler. According to the requirements of the "Technical Conditions for Coal Used in Chain Grate Boilers" (GB / T18942-2009) of the People's Republic of China, the lower limit rate of coal with a particle size of less than 6mm should be less than 30%. There is no report on the patented technology to solve the problem of pulverized coal exceeding the limit in the coal blending production process. [0003] Regarding the control of sulfur content in co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10
Inventor 赵志文张大康
Owner 赵志文
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