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A kind of activated carbon for recovering gasoline evaporation by using broad-leaved forest sawdust and its production method

A production method and broad-leaved forest technology, applied in the field of activated carbon, can solve the problems of waste, increased production costs, high rosin content, etc., and achieve the effects of stable product quality, reduced production costs, and reduced pollution

Inactive Publication Date: 2011-12-21
钟洪兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, "coniferous forest" wood chips, such as pine wood powder, cannot be used, because the material itself contains high rosin, and it is impossible to produce high specific surface area and appropriate mesopore diameter in the process of carbonization and activation.
If pine wood powder is mixed with other materials, it cannot produce high specific surface area and proper mesopore diameter due to its high rosin content.
At the same time, in the production process, there is no step of recovering powdered carbon, which causes a certain amount of waste and increases the production cost.

Method used

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  • A kind of activated carbon for recovering gasoline evaporation by using broad-leaved forest sawdust and its production method
  • A kind of activated carbon for recovering gasoline evaporation by using broad-leaved forest sawdust and its production method
  • A kind of activated carbon for recovering gasoline evaporation by using broad-leaved forest sawdust and its production method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0063] Dry the broad-leaved forest sawdust at a temperature of 110°C for 2.5 hours, then crush it into wood powder, and then sieve the crushed wood powder, and the particle range between (10-80) mesh is 98% . Mix the wood powder with the prepared phosphoric acid Baumé 50°Be’~60°Be’ in the ratio of 1:1.2 and pour it into the plasticizing furnace for plasticization.

[0064] The interlayer temperature of the melting furnace is 150-220°C, and the plasticizing time is 1.5 hours. The plasticized charcoal is put into the forming machine to form a spherical shape, and then the formed spherical charcoal or columnar charcoal is formed and hardened. The temperature of the first zone of forming and hardening is 250°C for 2 hours; the temperature of the second zone is 250°C for 6 hours. After forming and hardening, the second screening is carried out. After the second screening, the qualified product (carbon material) enters the "olive" type converter for activation. The pre-activation t...

example 2

[0071] Dry the broad-leaved forest sawdust at a temperature of 130°C for 1 hour, then crush it into wood powder, and then sieve the crushed wood powder for the first time, and the particles are in the range of (10-80) mesh 97%. Mix the wood powder with the prepared phosphoric acid Baume degree 50°Be'~60°Be' in the ratio of 1:1.2 and pour it into the plasticizing furnace for plasticization. The interlayer temperature of the plasticizing furnace is 220°C and the plasticizing time is After 1.5 hours, put the plasticized carbon material into the forming machine to form a spherical shape, and then shape and harden the formed spherical carbon or columnar carbon. The temperature in the first area of ​​forming hardening is 180°C for 5 hours; the temperature in the second area is 350°C , time 4 hours. After forming and hardening, the second screening is carried out. After the second screening, the qualified product (carbon material) enters the "olive" type converter for activation. Th...

example 3

[0078] Dry the broad-leaved forest sawdust at a temperature of 110°C for 3 hours, then crush it into wood powder, and then sieve the crushed wood powder for the first time, and the particles are in the range of (10-80) mesh 97%. Mix the wood powder with the prepared phosphoric acid Baume degree 50°Be'~60°Be' in the ratio of 1:1.2 and pour it into the plasticizing furnace for plasticization. The interlayer temperature of the plasticizing furnace is 240°C and the plasticizing time is After 2 hours, put the plasticized carbon material into the forming machine to form a spherical shape, and then shape and harden the formed spherical carbon or columnar carbon. The temperature in the first zone of forming hardening is 190°C, and the time is 4.5 hours; the temperature in the second zone is 280°C , time 5 hours. After forming and hardening, the second screening is carried out. After the second screening, the qualified product (carbon material) enters the "olive" type converter for ac...

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Abstract

The invention provides activated carbon prepared from broad-leaved wood chips for recovering evaporated gasoline as well as a preparation method thereof, wherein the activated carbon is low in cost, good in activity and stable in product quality. The preparation method comprises the following steps: wood chips are subjected to drying, crushing, primary screening, plasticizing, shaping, shaping and hardening, secondary screening, activating, cooling, cleaning and drying, wherein the wood chips are broad-leaved wood chips, and a step of reclaiming slack coal is arranged between the secondary screening and the activating, that is to say, waste slack coal which is obtained by screening three times is reprocessed. In the invention, the activated carbon prepared from the broad-leaved wood chips for recovering evaporated gasoline has the specification that: the butane effective adsorption value is more than 12g / 100ml, the abrasive resistance is more than 80 percent, moisture content is less than 5 percent, and ash content is less than 8 percent. The activated carbon has the advantages of: low cost, good activity, stable product quality, and high yield of finished products of the activated carbon.

Description

technical field [0001] The invention relates to a method for making activated carbon for recovering gasoline evaporation by using broad-leaved forest sawdust (saw powder, wood shavings, branches). Background technique [0002] At present, global automobile emission pollution has caused a major impact on the environment. The activated carbon (commonly known as carbon canister) used to recover gasoline evaporation can reduce emissions, reduce pollution, and help protect the environment. [0003] Activated carbon capable of adsorbing gasoline evaporation must have a high working capacity for adsorbing butane. Butane working capacity of the present invention is >12g / 100ml. [0004] Application No. 99114419.8 Invention Patent Name "Method for Manufacturing Activated Carbon for Vehicles Using Straw and Sawdust" uses zinc chloride as a catalyst to produce activated carbon for vehicles. Because zinc chloride is extremely poisonous and seriously pollutes the environment, it has ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C01B31/08
Inventor 钟洪兵
Owner 钟洪兵
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