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Activated carbon for solvent recovery produced from wood materials and preparation method thereof

A wood material, activated carbon technology, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve the problems of increasing production costs and rising product prices, and achieve lower prices and higher adsorption capacity. , the effect of reducing costs

Active Publication Date: 2011-11-23
FUJIAN XINSEN CARBON
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AI Technical Summary

Problems solved by technology

High-quality and special-purpose solvent recovery activated carbon currently mainly relies on foreign imports. Due to the relatively high price of imported products, companies have increased production costs, which in turn has increased the prices of products that rely on this solvent.
At present, there are no related patents applied by foreign companies in China to be authorized.

Method used

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  • Activated carbon for solvent recovery produced from wood materials and preparation method thereof

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Embodiment Construction

[0018] The present invention mainly comprises the following steps:

[0019] (1) Mixing of raw materials: Put the wood powder and catalyst in proportion to the environment of 80-125 ℃ and stir for 20~40 minutes until mixed; the mixing ratio is that the weight ratio of wood powder and catalyst is 1:0.8- 2.0.

[0020] The wood powder in the raw material is the wood powder that mixes one or more of coconut shells, apricot shells, tea seed shells, industrial throwing flowers, and sawdust to 20-100 meshes and has a moisture content of 5-20%. Described catalyzer is any one solution in phosphoric acid, zinc chloride, calcium chloride, sulfuric acid, boric acid, potassium dichromate, potassium permanganate, and the concentration of solution is 30-70%; Described catalyzer is with phosphoric acid, When zinc chloride is used as a catalyst, the product obtained has the best performance.

[0021] (2) Pre-carbonization (curing): Dry the mixture in step (1) at 80-125°C for 10-15 hours. Car...

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Abstract

The invention relates to an activated carbon for solvent recovery produced from wood materials and a preparation method thereof. The activated carbon for solvent recovery is characterized by simple production process, wide raw material resource, reduced production cost, superior product performance and strong competitiveness. The method comprises a plurality of processing steps such as raw material mixing, pre-carbonization (slaking), granulation, drying, screening, pre-activation, activation, catalyst recovery, rinsing and drying, etc. With simple production process, the activated carbon of the invention can be obtained by processing well proportioned raw materials. The activated carbon of the invention has wide raw material resources and reduced production cost, so that the price of a final product can be reduced and the market competitiveness can be improved. The characteristics of high adsorption capacity, high intensity, easy desorption, wide application scope and the like in theproduct itself can further improve the product market competitiveness.

Description

technical field [0001] The invention relates to a solvent recovery active carbon produced from wood materials and a preparation method. Background technique [0002] The history of solvent recovery of activated carbon in the chemical industry, petrochemical industry, and light industry can be traced back to the 1940s. The wide application of activated carbon for solvent recovery in my country began in the 1980s. In the past, it was mainly obtained by extruding low-ash pulverized coal with coal tar and asphalt into a columnar or spherical shape, and activated by physical methods. This process is still the mainstream product for solvent recovery. However, due to the limitations of the raw materials and the process itself, the process cannot produce products with low ash content (<5%) and high performance (carbon tetrachloride>100%), which cannot meet the current market demand for quality and application range. At present, there is no domestic manufacturer of activated ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01J20/28
Inventor 林鹏林树黄勇
Owner FUJIAN XINSEN CARBON
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