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Method using spent grains of white liquor for preparing active carbon

A technology for preparing activated carbon and liquor, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of polluting the surrounding environment, affecting normal production, wasting resources, etc., and achieve environmental pollution reduction, excellent adsorption performance, and production The effect of simple process

Inactive Publication Date: 2012-10-10
ANHUI GUJING DISTILLERY
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AI Technical Summary

Problems solved by technology

The output of discarded waste is large and concentrated. If it is not dealt with in time, it will be spoiled and deteriorated. It will not only waste resources, but also seriously pollute the surrounding environment and affect normal production.

Method used

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  • Method using spent grains of white liquor for preparing active carbon

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Embodiment Construction

[0016] 1. The desiliconization step of waste

[0017] Add 500mL of 2mol / L NaOH solution to 100g of waste grains, heat on an electric heating mantle, condense and reflux for 1 hour, then filter, wash the filter residue until neutral, and dry to obtain 32.6g of desiliconized waste grains. The yield of desiliconization of dregs is 32.6%

[0018] 2. Desiliconization and carbonization and activation steps:

[0019] Add 25mL of zinc chloride solution with a mass concentration of 50% to 5g of desiliconized grains (the ratio of solid to liquid is 1:5), place it in a muffle furnace for carbonization and activation at 500°C for 40 minutes, and then successively pass through a mass concentration of 5-10 % dilute hydrochloric acid, washed to neutrality, filtered, dried and ground to obtain 1.39g of activated carbon finished product. The finished product yield of activated carbon prepared by desiliconization and waste was 27.9%. The finished product yield of activated carbon prepared by...

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Abstract

The invention discloses a method using spent grains of white liquor for preparing active carbon. Firstly, directly boiling the spent grains of the white liquor and NaOH solution together to remove silicon; and then taking the zinc chloride as an activating agent, and obtaining the finished product of active carbon through the work procedures of carbonization and activation, acid pickling, water scrubbing, filtration, drying, grinding and the like. According to the invention, the spent grains are used as a raw material to prepare the active carbon, which effectively recycles and utilizes the waste resources, increases the integrated development and the utilization ratio of the resources and provides a new way for the circulation, resourcfulization, scale production, industrialization and product profit improvement of the resources.

Description

1. Technical field [0001] The invention relates to a method for preparing activated carbon by using liquor discarded grains, and belongs to the field of comprehensive utilization of liquor by-products. 2. Background technology [0002] Distiller's grains, also known as distiller's grains, is the residue left after fermentation of flour grains and solid-state distillation to extract wine. It itself is a product of various reasons such as incomplete fermentation. There are remaining unutilized starch and enriched protein in it. Nutrients such as amino acids, metabolites, vitamins, mineral elements, microbial residues, and a large number of wine flavor components. Liquor waste is a by-product of the winemaking industry and is rich in organic components. According to statistics, for every ton of 60-degree liquor produced, 3 tons of waste will be produced. The output of discarded waste is large and concentrated. If it is not processed in time, it will deteriorate, which will no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12C01B32/324C01B32/348
Inventor 周庆伍李安军万春环汤有宏王录孙天昊刘同芳
Owner ANHUI GUJING DISTILLERY
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