Impregnation process biomass-based active coke and preparation method thereof

A technology based on activated coke and biomass, applied in the field of active coke, can solve the problems of various raw materials, high energy consumption and cost, environmental pollution, etc., and achieve reduction of production energy consumption and time cost, controllable pore structure size, comprehensive high intensity effect

Active Publication Date: 2019-12-17
浙江微松冷链科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The carbonization and activation process in the process takes a long time, there are many types of raw materials, and the equipment structure is complex, so the energy consumption and cost are relatively high; elements such as N and S contained in raw coal are the main source of environmental pollution, and coal As a non-renewable energy source, it will face problems such as depletion

Method used

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  • Impregnation process biomass-based active coke and preparation method thereof

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Effect test

Embodiment 1

[0039] Step 1: Crushing and grinding coconut shells to coconut shell powder with a particle size of ≤1.25mm, and then drying until the moisture content is lower than 15%.

[0040] Step 2: The above-mentioned coconut shell powder is granulated and formed by a flat mill granulator to obtain mechanism coconut shell particles.

[0041] Step 3: Under the protection of a nitrogen atmosphere, the coconut shell particles of the above-mentioned mechanism are carbonized at a temperature increase rate of 5°C / min, and the final carbonization temperature is 550°C. The carbonization time maintained at the final carbonization temperature is 3.0h; After natural cooling, the mechanism coconut shell charcoal is obtained.

[0042] Step 4: Soak the above mechanism coconut shell charcoal in the phenolic resin emulsion with a solid content of 45wt% by the supersaturated impregnation method, wait for the adsorption to be saturated, filter and dry to obtain the active coke body, and repeat the impreg...

Embodiment 2

[0046] Step 1: crushing and grinding bamboo processing leftovers to bamboo powder with a particle size of ≤0.83mm, and then drying until the moisture content is lower than 25%.

[0047] Step 2: The above-mentioned bamboo powder is granulated by a ring mill granulator to obtain machine-made bamboo granules.

[0048] Step 3: Under the protection of a nitrogen atmosphere, the above-mentioned machine-made bamboo particles are carbonized at a heating rate of 2°C / min, and the final carbonization temperature is 600°C, and the carbonization time maintained at the final carbonization temperature is 1.0h; The machine-made bamboo charcoal is obtained after cooling.

[0049]Step 4: Soak the above-mentioned mechanism bamboo charcoal in an aqueous solution of sodium lignosulfonate with a concentration of 25wt% by supersaturated impregnation method, wait for the adsorption to be saturated, filter and dry to obtain an active coke body, and repeat the impregnation several times until the activ...

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Abstract

The invention discloses an impregnation process biomass-based active coke and a preparation method thereof. The preparation method comprises the following steps: crushing, grinding and drying a biomass raw material to obtain a biomass powder with a certain moisture content; pressing the biomass powder through a pressure forming machine to obtain machine-made biomass particles; carbonizing and cooling the machine-made biomass particles in an oxygen-free or low-oxygen environment to obtain machine-made biomass charcoal; impregnating the machine-made biomass charcoal in an adhesive impregnation solution, and then filtering and drying the impregnated machine-made biomass charcoal to obtain an active coke body; and carrying out secondary carbonization and cooling on the activated coke body in the oxygen-free or low-oxygen environment to obtain the active coke. The method has the advantages of simple process, low cost and low energy consumption, and the active coke product has the advantagesof high specific surface area, low ash content, high comprehensive strength, high adsorbability and the like.

Description

technical field [0001] The invention belongs to the technical field of active coke, and in particular relates to a kind of soaking method biomass-based active coke and a preparation method thereof. Background technique [0002] Activated carbon is an excellent porous adsorption material with a unique pore structure and adsorption properties. It is widely used in water purification, waste gas treatment and catalyst production. However, activated carbon is expensive and has low mechanical strength. Compared with activated carbon, activated coke overcomes the disadvantages of high price, low mechanical strength, and easy crushing of activated carbon. It has good adsorption and catalytic properties, stable chemical properties, and can be regenerated and reused. It can be used in wastewater treatment, air pollution control, etc. In the field, it has more practical significance to replace activated carbon with activated coke. [0003] The traditional preparation method of activat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324B01J20/20B01J21/18B01J35/10
CPCB01J20/20B01J21/18B01J35/10B01J35/1023C01B32/324
Inventor 严云尹怀刚杨旭何令华张松涛
Owner 浙江微松冷链科技有限公司
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