Chemical modification method of bagasse for purification

A technology of chemical modification and bagasse, applied in chemical instruments and methods, separation methods, other chemical processes, etc., can solve the problems of wood chip type and specification limitations, large performance changes, limited sources, etc., to improve activation efficiency, High degree of fibrosis and the effect of improving permeability

Active Publication Date: 2013-07-31
福建胜优环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] These patented methods use wood chips, peanut shells, and corncobs as raw materials, and through simple alkali, salt water, steam, or chemical treatments, the processability of fiber-containing substances is improved, and the use of filters is extended. Life expectancy, improving the accuracy of filtering solid impurities, and reducing exhaust emissions have been improved to a certain extent, but there are restrictions on the types and specifications of wood chips, limited sources, and high prices. The performance of purification materials made of peanut shells and corn cobs is acceptable, but The performance changes greatly with the processing conditions, it is not easy to control, and the cost is high

Method used

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  • Chemical modification method of bagasse for purification

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Effect test

Embodiment 1

[0038] Take 5.5 kg of bagasse with a particle size of 4-10 mesh and put it into a 50-liter pressure-resistant stirred reactor with a polytetrafluoroethylene lining and a heating tube, then add 25 kg of 0.2mol / L sulfuric acid aqueous solution, and heat it at 60°C Under the conditions of airtight stirring and impregnating for 6.5 hours, then filtered, washed 4 times with water 4 times the volume of bagasse, drained, put in an oven at 80°C for 5 hours, the water content of bagasse was 13%. Gained bagasse is then put into 50 liters of pressure-resistant stirred reactor with polytetrafluoroethylene lining and heating pipe, add 25 kilograms of tetrahydrofuran, dimethyl sulfoxide, urea, sodium sulfite, sodium ethylate, ethanol and water Mixed solvents with a mass ratio of 0.15:0.2:0.5:0.2:5:0.7:80 were reacted under airtight conditions at 60°C for 24 hours, filtered and washed 7 times with water 4 times the volume of bagasse, and then drained , put it in an oven at 115°C and bake for...

Embodiment 2

[0040] Take 6.5 kilograms of bagasse with a particle size of 4-15 mesh and put it into a 50-liter pressure-resistant stirred reactor with a polytetrafluoroethylene lining and a heating tube, then add 20 kilograms of 0.15mol / L sulfuric acid aqueous solution, and heat it at 70°C Under the conditions of airtight stirring and impregnation for 5 hours, then filtered, washed 4 times with water 4 times the volume of bagasse, drained, put in an oven at 60 ° C for 4 hours, the water content of bagasse is 12%. Gained bagasse is then put into a 50-liter pressure-resistant stirred reactor with a polytetrafluoroethylene lining and a heating pipe, and 20 kilograms of tetrahydrofuran, dimethyl sulfoxide, urea, sodium sulfite, sodium hydroxide, ethanol and water are added. Mixed solvents with a mass ratio of 0.15:0.1:0.6:0.3:6:0.5:60 were reacted under airtight conditions at 50°C for 48 hours, filtered and washed 6 times with water 3.5 times the volume of bagasse, and drained Dry it and put i...

Embodiment 3

[0042] Take 4 kg of bagasse with a particle size of 15-30 mesh and put it into a 50-liter pressure-resistant stirring reactor with a polytetrafluoroethylene lining and a heating tube, then add 18 kg of 0.45mol / L sulfuric acid aqueous solution, Under the condition of airtight stirring and impregnation for 8 hours, then filtered, washed 4 times with water 5 times the volume of bagasse, drained, put in an oven for 4 hours at 70°C, the moisture content of bagasse was 15%. Gained bagasse is then put into a 50-liter pressure-resistant stirred reactor with a polytetrafluoroethylene lining and a heating pipe, and 30 kilograms of tetrahydrofuran, dimethyl sulfoxide, urea, sodium sulfite, potassium hydroxide, ethanol and water are added. Mixed solvents with a mass ratio of 0.12:0.2:0.55:0.3:9:0.6:100 were reacted for 72 hours under airtight conditions at 70°C, filtered and washed 6 times with water 4 times the volume of bagasse, and then drained. Dry it and put it in an oven at 90°C for...

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Abstract

The invention provides a chemical modification method of bagasse for purification, which is used for filtering lubricating oil and takes the bagasse as a raw material. The chemical modification method comprises the following steps of: firstly dipping the bagasse in a sulfuric acid water solution of 0.01-1.0mol / L at the temperature of 20-80 DEG C for 1-10h, then placing the obtained bagasse into a mixed solution of tetrahydrofuran, dimethyl sulfoxide, urea, sodium silicate, alkali, ethanol and water according to the mass ratio of (0.1-1): (0.1-1): (0.1-5): (0.01-3): (0.25-15): (0.1-8): 15-200 for reaction, performing the reaction at the temperature of 20-80 DEG C for 1-100h, and washing and drying the bagasse after the reaction to obtain the bagasse with a high specific surface and a rich amorphous functional structure. The bagasse can be used for preparing various high-efficient filters, in particular to engine oil filters, and can greatly prolong the service life of engine oil and simultaneously reduce the emission of harmful substances in automobile tail gas.

Description

technical field [0001] The invention relates to a chemical modification method of bagasse used for filtering, in particular to a chemical catalytic modification treatment method of bagasse used for filtering lubricating oil. Background technique [0002] Bagasse is the fibrous residue of sugarcane stem after crushing and extracting sugarcane juice. It is the main by-product of sugar industry and is a renewable resource. Every time 1 ton of sucrose is produced, about lt of bagasse will be produced. Bagasse is an important renewable biomass resource. China is the third largest sugarcane planting country next to Brazil and India. The sugarcane in the southern sugarcane region mainly includes sugar cane and fruit cane, with a total output of more than 70 million tons. The output reached 7 million tons. The components of bagasse are mainly cellulose, hemicellulose and lignin, with less protein, starch and soluble sugar. Bagasse has a high degree of lignification, generally c...

Claims

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Application Information

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IPC IPC(8): C08H8/00B01J20/24B01J20/30B01D39/18
Inventor 陈晓晖潘守泉
Owner 福建胜优环保科技有限公司
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