Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of active coke for denitrification and desulfurization

A technology for desulfurization activated coke and denitrification, applied in the field of activated coke, can solve problems such as general comprehensive performance, and achieve the effect of improving desulfurization and denitration efficiency, improving denitration performance and wear resistance, and improving wear resistance and compressive strength.

Inactive Publication Date: 2020-01-03
ANHUI TONGXING ENVIRONMENTAL PROTECTION ENG
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the general problem of comprehensive performance in the prior art, the present invention provides a preparation method of high denitrification and desulfurization active coke, which adopts multiple activation and ultrasonic treatment techniques to improve the comprehensive performance of active coke

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of high denitrification and desulfurization active coke comprises the following steps:

[0028] (1) Crush the coal raw material to 1-10mm, dry it, and set it aside;

[0029] (2) Air pre-oxidation treatment: heat the pulverized coal to 200°C-220°C and keep it for 5 hours;

[0030] (3) Ultrasonic treatment: Ultrasonic treatment of pulverized coal at 50KHz for 52 minutes;

[0031] (4) Put the pulverized coal into the carbonization activation furnace, pass in the inert gas, raise the temperature to 700°C-800°C at a rate of 20°C / min, and keep it for 38 minutes to obtain the carbonized material;

[0032] (5) Activate the carbonized material: at a temperature of 700-800°C, pass in water vapor and oxygen, activate for 36 minutes, and obtain initially activated activated coke;

[0033] (6) Reactivation: at a temperature of 800°C to 900°C, pass in carbon dioxide gas and activate for 60 to 100 minutes to obtain active coke;

[0034] (7) At a temperature o...

Embodiment 2

[0040] The preparation method of high denitrification and desulfurization active coke comprises the following steps:

[0041] (1) Crush the coal raw material to 1-10mm, dry it, and set it aside;

[0042] (2) Air pre-oxidation treatment: heat the pulverized coal to 200°C-220°C and keep it for 6h;

[0043] (3) Ultrasonic treatment: Ultrasonic treatment of pulverized coal at 30KHz for 55 minutes;

[0044] (4) Put the pulverized coal into the carbonization activation furnace, pass in an inert gas, raise the temperature to 700°C-800°C at a rate of 20°C / min, and keep it warm for 40 minutes to obtain the carbonized material;

[0045] (5) Activation of the carbonized material: at a temperature of 700-800°C, pass in water vapor and oxygen, activate for 40 minutes, and obtain initially activated activated coke;

[0046] (6) Reactivation: At a temperature of 800°C to 900°C, carbon dioxide gas is introduced to activate for 100 minutes to obtain active coke;

[0047] (7) At a temperatur...

Embodiment 3

[0053] The preparation method of high denitrification and desulfurization active coke comprises the following steps:

[0054] (1) Crush the coal raw material to 1-10mm, dry it, and set it aside;

[0055] (2) Air pre-oxidation treatment: heat the pulverized coal to 200°C-220°C and keep it for 4h;

[0056] (3) Ultrasonic treatment: Ultrasonic treatment of pulverized coal at 70KHz for 50 minutes;

[0057] (4) Put the pulverized coal into the carbonization activation furnace, pass in the inert gas, raise the temperature to 700°C-800°C at a rate of 20°C / min, and keep it for 30 minutes to obtain the carbonized material;

[0058] (5) Activation of the carbonized material: at a temperature of 700-800°C, pass in water vapor and oxygen, activate for 30 minutes, and obtain initially activated activated coke;

[0059] (6) Reactivation: At a temperature of 800°C to 900°C, carbon dioxide gas is introduced to activate for 60 minutes to obtain active coke;

[0060] (7) At a temperature of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
percent by volumeaaaaaaaaaa
denitrification rateaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of active coke used for denitration and desulfuration and belongs to the field of active coke. The method comprises the following steps: (1) smashing and drying raw material coal for later use; (2) air pre-oxidation treatment; (3) ultrasonic treatment: performing ultrasonic treatment on coal dust; (4) putting the coal dust into a carbonizing and activating oven, introducing inert gas, and heating for reaction to obtain a carbonized material; (5) activating the carbonized material: introducing water vapor and oxygen, and activating to obtain active coke activated in the initial stage; (6) activation of the second time: introducing carbon dioxide gas, and activating to obtain active coke; (7) introducing mixed gas of carbon dioxide and oxygen, andactivating for 50-80min; (8) cooling, introducing oxygen, and maintaining for 100-140min; and (9) drying, with the drying temperature of 120 DEG C and drying time of 2 hours, thus obtaining the active coke. According to the invention, under the condition of ensuring that the desulfuration property is not reduced, denitration property and abrasive resistance and compression strength are improved.

Description

technical field [0001] The invention belongs to the field of active coke, in particular to a preparation method of high denitrification and desulfurization active coke. Background technique [0002] Activated coke desulfurization is the use of activated coke to absorb SO in flue gas 2 , In the presence of oxygen and water vapor in the flue, the flue gas purification technology is oxidized to sulfuric acid and adsorbed in the pores of activated coke. [0003] The Chinese patent application with the application number 201010519847.2 discloses a preparation method of activated coke for denitrification, desulfurization and demercuration, including the following steps: 1) kneading and extruding coal powder into granules; 2) carbonizing the granules to obtain carbonized products ; 3) Activate the carbonization product with a mixed gas of water vapor and ammonia to obtain the denitrification, desulfurization and demercuration activated coke. The active coke prepared by the invent...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18C01B32/336
Inventor 胡光远
Owner ANHUI TONGXING ENVIRONMENTAL PROTECTION ENG