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Method for producing drinking water deep purification activated carbon by utilizing Datong coal

A deep purification, activated carbon technology, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of complex production method of agglomerated activated carbon, high product production cost, unstable performance, etc. The effect of stable product quality and good drinking water purification performance

Inactive Publication Date: 2012-07-04
DATONG COAL MINE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of complex production method, high production cost and unstable performance of the existing briquette activated carbon, the present invention provides a method for preparing activated carbon for deep purification of drinking water from Datong coal

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  • Method for producing drinking water deep purification activated carbon by utilizing Datong coal
  • Method for producing drinking water deep purification activated carbon by utilizing Datong coal

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Embodiment 1

[0030] A method for preparing active carbon for deep purification of drinking water from Datong bituminous coal, including crushing, grinding, briquetting, carbonization, activation and screening processes, the raw coal used is Datong bituminous coal; the crushing process is: sending the raw coal into Known crushing equipment is crushed to a particle size of 3-5mm; the described grinding process is: the raw material crushed coal is pulverized by a ball mill, and more than 99% of the particles after grinding are required to pass through a 200 mesh sieve; the described briquetting process is : Utilize the dry rolling granulator equipment to carry out dry briquetting molding of the powder after grinding under the pressure of 27MPa; the carbonization process is: sending the briquetting material into the horizontal external heating rotary furnace Carbonization, carbonization temperature: 500°C, carbonization time: 38min, heating rate: 10°C / min; the activation process is: put the car...

Embodiment 2

[0032] A method for preparing activated carbon for deep purification of drinking water from Datong coal, comprising crushing, pulverizing, briquetting, carbonization, activation and screening processes, the raw coal used is Datong bituminous coal; the crushing process is: crushing the raw coal into The particle size of 3-5mm; the described milling process is: more than 99% of the particles after the raw material crushing and coal milling are required to pass through a 200 mesh sieve; The briquetting process is carried out under the following conditions; the carbonization process is: send the briquette material into the carbonization furnace for carbonization, the carbonization temperature is 530°C, the carbonization time is 45min, and the heating rate is 3°C / min; the activation process is: Send the carbonized material into the activation furnace for activation, the activator is water vapor, the activation temperature: 800°C, and the activation time: 230 minutes; the screening p...

Embodiment 3

[0035] A method for preparing activated carbon for deep purification of drinking water from Datong coal, comprising crushing, pulverizing, briquetting, carbonization, activation and screening processes, the raw coal used is Datong bituminous coal; the crushing process is: crushing the raw coal into The particle size of 3-5mm; the described milling process is: the particle fineness of the raw material crushed coal after milling requires more than 99% to pass through a 200 mesh sieve; the described briquetting process is: the powder after grinding is at 29MPa The briquetting process is carried out under a certain pressure; the carbonization process is: send the briquette material into the carbonization furnace for carbonization, the carbonization temperature: 550°C, the carbonization time: 74min, and the heating rate is 5°C / min; the activation process The method is: send the carbonized material into the activation furnace for activation, the activator is water vapor, the activati...

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Abstract

The invention relates to a method for producing briquetting activated carbon, in particular to a method for producing drinking water deep purification activated carbon by utilizing Datong coal, which solves the problems of complex method, high product production cost and unstable performance of existing briquetting activated carbon production. The method utilizes the Datong bituminous coal as raw material coal and comprises the steps of crushing (achieving crushing of the Datong bituminous coal into granularity of 3-5mm), powder grinding (above 99% of powder particles needing to pass through a screen with 200 meshes), briquetting (achieving briquetting forming under the pressure of 20-30 MPa), carbonization (achieving the carbonization at the temperature of 500-700 DEG C for 30-90 minutes with temperature rising speed of 2-10 DEG C / min), activation (achieving the activation at the temperature of 700-950 DEG C for 180-270 minutes with water vapor as activator) and screening. The method breaks through the limitation that coal blending and addition of additive are carried out on raw materials of the briquetting activated carbon at home when the briquetting activated carbon is produced, has stable performance, and is suitable for deep purification of drinking water.

Description

technical field [0001] The invention relates to a method for preparing briquetted activated carbon, in particular to a method for preparing activated carbon for deep purification of drinking water with Datong coal. Background technique [0002] Activated carbon has a very developed internal pore structure and a large specific surface area. It has strong adsorption capacity and can effectively adsorb gases, organic matter, colloidal solids and pigments. It is widely used in many fields such as chemistry and environment. Activated carbon has a strong adsorption capacity for dissolved organic matter in water. The use of activated carbon to purify water is an effective method for deep purification of drinking water proven by many countries in the world. [0003] The performance of activated carbon products mainly depends on the nature of raw materials and production technology. Domestic water purification mainly uses coal-based activated carbon, including raw coal crushed activ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08C01B32/318
Inventor 李艳芳蒋煜吴永平王鹏于斌
Owner DATONG COAL MINE GRP
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