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Method for preparing granular active carbon for gasoline vapor recovery by using oil tea shells

A technology of granular activated carbon and Camellia oleifera husk, which is applied in the field of granular activated carbon for the recovery of gasoline vapor from Camellia oleifera husk, which can solve the problems of air pollution, large gasoline consumption, and high price

Inactive Publication Date: 2010-10-20
ZHEJIANG FORESTRY ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are a lot of cars in our country, and the consumption of gasoline is large. During the storage, transfer, and use of gasoline, the volatilization of gasoline vapor will cause a huge loss of fuel, and will reduce the quality of oil products. At the same time, it will pollute the atmospheric environment and have potential safety hazards. There is an urgent need to recycle the gasoline vapors produced in the above process
At present, activated carbon for gasoline vapor recovery relies on imports from abroad, which is expensive, and there is an urgent need to develop activated carbon for gasoline vapor recovery

Method used

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  • Method for preparing granular active carbon for gasoline vapor recovery by using oil tea shells
  • Method for preparing granular active carbon for gasoline vapor recovery by using oil tea shells

Examples

Experimental program
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Effect test

example 1

[0009] Dry the camellia oleifera shell at 100°C and crush it to 30-60 meshes, stir and mix the camellia oleifera shell powder and 85% phosphoric acid solution in a weight ratio of 1:2 and let it stand for 24 hours, then place the mixture in Plasticize in a constant temperature oven at 90°C for 1 hour, put the plasticized material into a screw extruder to make columnar particles with a diameter of 2mm and a length of 5-10mm, and dry and harden in an oven at 120°C for 1 hour. Finally put it into a rotary activation furnace and activate it at 450°C for 1.5 hours. After cooling, the activated material is rinsed with water until the pH value is 5-7. Put the rinsed charcoal into a constant temperature oven and dry it at 100-105°C for 2 hours. , just make the active carbon product that oil camellia shell gasoline vapor recovers, and its butane working capacity is 16.5g / 100ml, and wear-resisting strength is 90%.

example 2

[0011] Dry the camellia oleifera shell at 100°C and crush it to 30-60 meshes, stir and mix the camellia oleifera shell powder and 75% phosphoric acid solution in a weight ratio of 1:2 and let it stand for 24 hours, then place the mixture in Plasticize in a constant temperature oven at 100°C for 1 hour, put the plasticized material into a screw extrusion molding machine to make columnar particles with a diameter of 3mm and a length of 5-10mm, and dry and harden in an oven at 110°C for 1 hour. Finally, put it into a rotary activation furnace and activate it at 500°C for 2 hours. After cooling, the activated material is rinsed with water until the pH value is 5-7. Put the rinsed charcoal into a constant temperature oven and dry it at 100-105°C for 2 hours. , the activated carbon product for recovery of camellia oleifera shell gasoline vapor is obtained, the butane working capacity is 15.5g / 100ml, and the wear resistance is 88%.

example 3

[0013] Dry the camellia oleifera shell at 100°C and crush it to 30-60 meshes, stir and mix the camellia oleifera shell powder and 65% phosphoric acid solution in a weight ratio of 1:2.5 and let it stand for 24 hours, then place the mixture in Plasticize in a constant temperature oven at 100°C for 1.5 hours, put the plasticized material into a screw extrusion molding machine to make columnar particles with a diameter of 2mm and a length of 5-10mm, and dry and harden in an oven at 110°C for 1 hour. Finally put it into a rotary activation furnace and activate it at 550°C for 2.5 hours. After cooling, the activated material is rinsed with water until the pH value is 5-7. Put the rinsed charcoal into a constant temperature oven and dry it at 100-105°C for 2 hours. , the activated carbon product for recovery of camellia oleifera shell gasoline vapor is obtained, the butane working capacity is 14.8g / 100ml, and the wear resistance is 86%.

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Abstract

The invention discloses a method for preparing granular active carbon for gasoline vapor recovery by using oil tea shells as raw materials and phosphoric acid as an active agent. The method comprises the following steps of: drying, crushing and screening the oil tea shells to prepare oil tea shell powder with a certain fineness; mixing the oil tea shell powder with60 to 85 percent phosphoric acid solution in a ratio of 1:2-3, soaking for a certain period of time, and standing the mixed solution in a constant temperature oven for plasticized treatment at the temperature of between 90 and 100 DEG C so as to produce cohesive tar; putting the plasticized materials in a screw extrusion molding machine to prepare cylindrical granules with the diameter of 2 to 3 mm and the length of 5 to 10 mm, and drying and hardening the cylindrical granules at the temperature of between 110 and 120 DEG C; activating the cylindrical granules in activating equipment at the temperature of between 450 and 550 DEG C so as to prepare activated materials, washing the activated materials by using a proper amount of water so as to recover the phosphoric acid, and bleaching repeatedly by using water until the PH value of the bleaching solution is between 5 and 7; and finally drying and detecting to prepare the granular active carbon for gasoline vapor recovery.

Description

1. Technical field [0001] The invention relates to the processing and utilization technology of camellia oleifera husk, a by-product in the production of camellia oleifera, in particular to a method for preparing granular activated carbon for recovering gasoline vapor from the camellia oleifera husk. 2. Technical background [0002] Camellia oleifera is the main woody oil tree species in my country. It is cultivated in various provinces and regions in the Yangtze River Basin and Pearl River Basin in southern my country. The current Camellia oleifera cultivation area in China is about 5.5 million hectares, with an annual output of about 700,000 tons of camellia oleifera seeds. Camellia oleifera husk is the outer skin of camellia oleifera fruit, which accounts for 60-70% of the fresh weight of camellia oleifera fruit. There are more than one million tons of camellia oleifera husks produced every year, and the resources are abundant. At present, in addition to being used for th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
Inventor 蒋应梯庄晓伟陈顺伟潘炘
Owner ZHEJIANG FORESTRY ACAD
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