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Process for producing active carbon for decolorization

A technology of activated carbon and carbonization, which is applied in the field of preparation of activated carbon for decolorization, can solve environmental problems, resource waste and other problems, achieve good adsorption performance, and solve the effects of resource waste and environmental pollution

Inactive Publication Date: 2009-08-19
南雄市青松环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nanxiong, Guangdong has been the hometown of yellow tobacco since ancient times. It has a long history of tobacco planting. Tobacco leaf planting is well-known throughout the country and has always been the main source of financial revenue in Nanxiong and surrounding areas. However, for a long time, after harvesting tobacco leaves every year, tens of thousands of tons of tobacco stems were Abandoning fields or burning them as common fuels not only causes environmental problems, but also wastes resources

Method used

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  • Process for producing active carbon for decolorization
  • Process for producing active carbon for decolorization
  • Process for producing active carbon for decolorization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, utilize tobacco rod to produce decolorizing activated carbon

[0030] 1. Crush 1000g of tobacco rod samples to a particle size of 4-8 meshes.

[0031] 2. Press the broken cigarette rod into shape.

[0032] 3. Dry the formed tobacco rod.

[0033] 4. The dried tobacco rods are carbonized, the final temperature of carbonization is 600° C., and the carbonization time is 70 minutes to obtain a carbonized product. Calculate the carbonization yield (carbonization yield=carbonized product mass / tobacco rod sample mass×100%) and carbonized product performance index (standard number: GB / T212-2001), the results are shown in Table 3.

[0034] 5. The carbonized product is activated, the activation temperature is 900° C., and the activation time is 20 minutes to obtain activated carbon. Calculate the activated carbon yield (activated carbon yield = activated carbon mass / carbonized product mass × 100%") and the performance index of activated carbon. The results are sho...

Embodiment 2

[0035] Embodiment 2, utilize tobacco rod to produce decolorizing activated carbon

[0036] 1. Same as step 1 of Example 1.

[0037] 2. Same as step 2 of embodiment 1.

[0038] 3. Same as step 3 of Embodiment 1.

[0039] 4. Carbonizing the dried tobacco rod particles, the carbonization final temperature is 500°C, and the carbonization time is 60min to obtain a carbonized product. The carbonization yield and the performance index of the carbonized product were calculated, and the results are shown in Table 3.

[0040] 5. The carbonized product is activated, the activation temperature is 800° C., and the activation time is 30 minutes to obtain activated carbon. Calculate the yield of activated carbon and the performance indicators of activated carbon. The results are shown in Table 4.

Embodiment 3

[0041] Embodiment 3, utilize tobacco rod to produce decolorizing activated carbon

[0042] 1. Same as step 1 of Example 1.

[0043] 2. Same as step 2 of embodiment 1.

[0044] 3. Same as step 3 of Embodiment 1.

[0045] 4. Carbonizing the dried tobacco rod particles, the final carbonization temperature is 700°C, and the carbonization time is 60 minutes to obtain a carbonized product. The carbonization yield and the performance index of the carbonized product were calculated, and the results are shown in Table 3.

[0046] 5. The carbonized product is activated, the activation temperature is 700° C., and the activation time is 40 minutes to obtain activated carbon. Calculate the yield of activated carbon and the performance indicators of activated carbon. The results are shown in Table 4.

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Abstract

The invention discloses a method for preparing active carbon for decolorization. The method for preparing the active carbon comprises the following steps: 1) crushing tobacco rods, and performing press forming and drying on the crushed tobacco rods; 2) carbonizing the tobacco rods subjected to crushing, press forming and drying to obtain carbonized products; and 3) physically activating the carbonized products to obtain the active carbon. The active carbon prepared by the method has good adsorptivity and low content of harmful substances, and can be used for the decolorization of chemical products, foods and medicaments because various indexes of the active carbon accord with the national standard. In addition, the method utilizes the tobacco rods as a raw material, solves the problems of resource waste and environmental pollution due to the fact that the tobacco rods are discarded and burnt, and is of great significance.

Description

technical field [0001] The invention relates to a preparation method of activated carbon for decolorization. Background technique [0002] Activated carbon was industrially produced at the beginning of the twentieth century. In the First World War, activated carbon was widely used as a military protective agent, thus promoting the formation of industrial-scale production of activated carbon. After the Second World War, especially since the 1960s when the world economy began to develop rapidly, as a kind of pore structure with rich pore structure, huge specific surface area, good chemical stability, strong adsorption performance and resistance Grinding strength carbon adsorption material, activated carbon has been widely used in almost all modern industrial sectors, and its production scale, production technology, and production raw materials have been greatly developed. After entering the 1980s, with the continuous improvement of people's quality of life and the increasing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08
Inventor 梁大明孙仲超董卫果邓一英李兰廷王鹏刘春兰李雪飞文芳国晖李艳芳熊银武
Owner 南雄市青松环保材料有限公司