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Coal briquette composite crosslinking binder and production method thereof

A production method and a compound technology, applied in the field of briquette binders, can solve the problems of low water absorption of binders, difficulties in producing briquettes, difficulties in production and use, etc., and achieve good formability, thermal stability and reactivity Good, good looking effect

Inactive Publication Date: 2012-11-28
GUANGXI JINZHUANGJIN ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] 2. Application number: 201010119516.X, which discloses a coupling composite briquette binder, which is composed of 350-600 parts of bentonite, 45-55 parts of tackifier, 3-5 parts of soda ash, 280-320 parts of kaolin and 100-125 parts of sodium humate are mixed, and the thickener is composed of 10-15 parts of polyacrylate, 5-10 parts of acrylamide, 3-5 parts of cellulose, 20-25 parts of cassava stem or sweet potato stem, modified 3~5 parts of non-toxic starch, 0.2~0.5 parts of crosslinking agent; the briquette binder has good water absorption performance, and the coal stick formed after extrusion evaporates quickly and is easy to dry, which solves the problem of high moisture in raw coal in rainy days in the south, and the production type Problems of difficult coal and low molding rate
The water absorption rate of the binder is low, and the water content of the processed briquettes is relatively high. It is difficult to produce and use in rainy days (especially in the south), and a large area of ​​retting yard is required. The production process cannot be continuously produced due to the need for retting.
Therefore, when using this briquette, an additional part of energy will be consumed
[0019] At present, there is no report on the combination of bentonite, sodium alginate, hydroxymethylcellulose, potato residue fine powder, calcium hydroxide, methyl acrylate, chimney ash and alkali lignin

Method used

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  • Coal briquette composite crosslinking binder and production method thereof
  • Coal briquette composite crosslinking binder and production method thereof
  • Coal briquette composite crosslinking binder and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0060] A briquette composite crosslinking binder, its raw material composition is as follows:

[0061]

[0062] Wherein, the weight ratio of each component in the tackifier is:

[0063]

[0064] The chimney ash in this embodiment is selected from the ash from the chimney and / or dust removal equipment of a chemical plant, with a calorific value of 2500J / kg~3000J / kg.

[0065] The sweet potato flour residue is obtained by extracting the starch from the sweet potato, drying it until the water content is less than 20%, and then crushing it into a powder less than 20 meshes.

[0066] like figure 1 Shown, the production method of this briquette composite cross-linking binder comprises the following steps:

[0067] (1) Preparation of viscosifier According to the ratio of parts by weight, sodium alginate, hydroxymethyl cellulose and benzoyl peroxide were uniformly added to the reactor for humidification treatment, the stirring speed was 400r / min, the heating temperature was 70°...

Embodiment 2

[0072] A briquette composite crosslinking binder, its raw material composition is as follows:

[0073]

[0074] Wherein, the weight ratio of each component in the tackifier is:

[0075]

[0076] The chimney ash in this embodiment is selected from the ash from the chimney and / or dust removal equipment of a chemical plant, with a calorific value of 2500J / kg~3000J / kg.

[0077] Cassava flour slag is obtained by extracting starch from cassava, drying it until the water content is less than 20%, and then crushing it into a powder less than 20 meshes.

[0078] like figure 1 Shown, the production method of this briquette composite cross-linking binder comprises the following steps:

[0079] (1) Preparation of viscosity enhancer According to the ratio of parts by weight, sodium alginate, hydroxymethyl cellulose and benzoyl peroxide were uniformly added to the reactor for humidification treatment, the stirring speed was 500r / min, the heating temperature was 80°C, and the reactio...

Embodiment 3

[0084] A briquette composite crosslinking binder, its raw material composition is as follows:

[0085]

[0086]

[0087] Wherein, the weight ratio of each component in the tackifier is:

[0088]

[0089]The chimney ash in this embodiment is selected from the ash from the chimney and / or dust removal equipment of a chemical plant, with a calorific value of 2500J / kg~3000J / kg.

[0090] The taro powder dregs is obtained by extracting the starch from the taro, drying it until the water content is less than 20%, and then crushing it into a powder less than 20 meshes.

[0091] like figure 1 Shown, the production method of this briquette composite cross-linking binder comprises the following steps:

[0092] (1) Preparation of viscosifier According to the ratio of parts by weight, sodium alginate, hydroxymethyl cellulose and benzoyl peroxide were uniformly added to the reactor for humidification treatment, the stirring speed was 600r / min, the heating temperature was 90°C, and...

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Abstract

The present invention discloses a coal briquette composite crosslinking binder, comprising the following components, by weight ratio: 400-600 parts of bentonite, 5-10 parts of tackifier, 300-400 parts of chimney ash and 100-150 parts of alkali lignin, wherein the tackifier is prepared by mixing 1-5 parts of sodium alginate, 1-5 parts of hydroxymethyl cellulose, 2-5 parts of potato residue class fine powder, 0.1-1 part of a crosslinking agent, 0.1-1 part of calcium hydroxide, and 0.05-0.5 parts of methyl acrylate. The production method comprises the steps of: preparing the tackifier, pretreating, mixing, etc. The binder of the present invention is not only strong in water absorption of more than 400 times, but wide in sources of raw materials and low in cost. The coal briquettes added with the binder are high in mechanical strength, good in thermal stability and reactivity, high in water absorption, do not need adding a base when being used, do not need cooking and retting, help to reduce labor intensity of workers, and are free from impacts of northern rain and snow and southern humid weather.

Description

technical field [0001] The invention belongs to the field of briquette binders, and in particular relates to a briquette composite crosslinking binder and a production method thereof. Background technique [0002] Briquette production and application are the main components of my country's clean coal technology. Briquette is used for combustion, which can save energy, increase efficiency, reduce consumption, fix sulfur, and reduce environmental pollution; when used for gas production, it can solve the problem of a large backlog of anthracite powder, waste of resources, and shortage of lump coal, especially cost reduction. The development of briquette technology is imperative and of great significance. In the briquette cold pressing process, the research and development of the binder is one of the key technologies, which directly determines the cold and hot strength, water resistance, thermal stability and combustibility of the briquette. The selection of briquette binder m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/14
Inventor 邹高峰
Owner GUANGXI JINZHUANGJIN ENERGY SAVING TECH
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