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Combined carbonization method for preparing baking soda and white carbon black by matching rice hull power generation

A technology of baking soda and white carbon black, which is applied in the field of preparation of baking soda and white carbon black, can solve the problems of low activity of activated carbon, large amount of dissolved silicon dioxide, etc., and achieve increased production, low cost and no waste discharge production, The effect of improving quality

Inactive Publication Date: 2015-01-28
叶阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0061] It is the purpose of the present invention to solve the problems of low activity of activated carbon produced by CN102275937B, scarring in the carbonization process and excessive dissolution of silicon dioxide.

Method used

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  • Combined carbonization method for preparing baking soda and white carbon black by matching rice hull power generation
  • Combined carbonization method for preparing baking soda and white carbon black by matching rice hull power generation
  • Combined carbonization method for preparing baking soda and white carbon black by matching rice hull power generation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] (1) Preparation of sodium silicate - activated carbon

[0101] Add 1,000 grams of 20% caustic soda solution to the pressure reactor with stirring, and then add 520 grams of rice husk ash with a silicon dioxide content of 69.2%, and react at 180° C. and corresponding saturated steam pressure for 60 minutes to complete the reaction.

[0102] (2) Sodium silicate - carbon residue separation

[0103] Filter the reaction product, the filtrate is sodium silicate solution, and send it to the baking soda-white carbon black preparation process, and the filter residue is carbon residue composed of carbon particles, and send it to the next water washing process

[0104] (3) Charcoal residue washing

[0105] The charcoal residue was washed twice with water consumption of 1007 grams each time, and the water was recycled into step (2) to obtain the sodium silicate filtrate, and the charcoal residue after washing was sent to the activation process.

[0106] (4) Carbon residue activat...

Embodiment 2

[0121] (1) Preparation of sodium silicate - activated carbon

[0122] In the pressure reactor with stirring, add 520 grams of rice husk ash identical to Example 1, then add the caustic soda solution recovered in Example 1 step (5), react at 200 ° C and corresponding saturated steam pressure for 50 minutes to complete the reaction .

[0123] (2) Sodium silicate - carbon residue separation

[0124] The reaction product is filtered, and the filter residue is carbon residue composed of carbon particles, which is sent to the water washing process; the filtrate is sodium silicate solution, which is used for the preparation of baking soda-white carbon black.

[0125] (3) Charcoal residue washing

[0126] Water the charcoal slag twice first, each time the water consumption is 1014 grams, and the washing water is recovered and incorporated into the sodium silicate filtrate.

[0127] (4) Carbon residue activation

[0128] Add 74 grams of water to the washed charcoal residue, then ad...

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Abstract

The invention discloses a combined carbonization method for preparing baking soda and white carbon black by matching rice hull power generation. Caustic soda as well as carbon dioxide and rice hull ash which are discharged by rice hull power generation are used as raw materials. The method comprises the steps of reacting a caustic soda solution with silicon dioxide in the rice hull ash to generate sodium silicate, then filtering, and washing with water and activating the filter residue to obtain active carbon; and sequentially carbonizing the sodium silicate filtrate by using baking soda and the carbon dioxide to prepare the baking soda and the white carbon black.

Description

technical field [0001] The invention relates to a method for preparing baking soda and white carbon black, in particular to a method for preparing baking soda and white carbon black to co-produce activated carbon by using rice husk ash and carbon dioxide discharged from rice husk power generation as raw materials and caustic soda. Background of the invention [0002] 1. Rice husk power generation and related issues [0003] The use of rice husk as fuel for power generation, the so-called rice husk power generation, is the need for the optimization of my country's energy structure. my country is the largest country in the world that uses coal as its main energy source. By 2013, my country's coal production had increased to 3.7 billion tons, most of which were used as primary energy, causing serious ecological and environmental problems. Accelerating the development and utilization of renewable energy to reduce coal consumption and change my country's coal-based energy struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12C01B31/12C01D7/00B09B3/00C01B32/324C01B32/348
Inventor 叶阳叶天润
Owner 叶阳
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