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Passivation process and passivation system of active coke

A coal char and active technology, applied in the field of passivation process and passivation system of active coal char, can solve the problems of huge process cost burden, high oxidant cost and high requirements, and achieve low production process cost, high practicability, and improved efficiency effect

Inactive Publication Date: 2010-07-21
HUNAN HUAYIN ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost of the oxidant and the high requirements for its supporting equipment, large-scale industrialization will bring a huge process cost burden

Method used

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  • Passivation process and passivation system of active coke
  • Passivation process and passivation system of active coke
  • Passivation process and passivation system of active coke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] About 2 tons of high-activity coal char 1 with a water content of 5% and a temperature of 95°C that has undergone low-temperature dry distillation treatment (spontaneous combustion occurs within a short period of time when exposed to air), is added to the passivation refining reactor for continuous passivation treatment, First enter the rehydration reaction zone 2 for rehydration and cooling, after a period of reaction, the temperature of the coal char 1 entering the low temperature passivation reaction zone 3 is 50-55°C, and the water content is 9% (surrounding environment balance Humidity is 8%), the temperature is 50 ℃, the oxygen content is 16%, the relative humidity is 80% low-temperature passivation reaction gas for passivation treatment, the passivation gas flow rate is 5 to 10 cubic meters per kilogram of coal char , after 4 to 6 hours of passivation treatment, enter the cooling zone 4 and be cooled to the same temperature as the surrounding environment. The wat...

Embodiment 2

[0056] Continuous passivation treatment is carried out on about 19 tons of active coal char 1 with a water content of 1-3% and a temperature of 106°C that has undergone low-temperature carbonization treatment. The coal char is cooled and rehydrated in the reactor. The temperature after rehydration and cooling is 45-50°C, and the coal char with a water content of 9% is added to the passivation refining reactor. Inner 3 is passivated by low-temperature passivation reaction gas with a temperature of 55°C, an oxygen content of 18%, a relative humidity of 85%, and a flow rate of 12 to 15 cubic meters per kilogram of coal. After 16 to 19 hours of passivation treatment After entering into the cooling zone 4, it is cooled to normal temperature. Coal char with a water content of 8-9% is obtained after passivation treatment.

[0057] It has been verified that the coal coke after the above treatment is piled up in the environment and placed for a long time, and its properties are stable...

Embodiment 3

[0059] Continuous passivation treatment is carried out on about 10 tons of active coal char 1 with a water content of 4-5% and a temperature of 103°C that has undergone low-temperature carbonization treatment. The coal char is cooled and rehydrated in the reactor. The temperature after rehydration and cooling is 55-60°C, and the coal char with a water content of 8-9% is added to the passivation refining reactor. The reaction zone 3 is passivated by the low-temperature passivation reaction gas with a temperature of 58°C, an oxygen content of 19%, a relative humidity of 90%, and a flow rate of 8 to 13 cubic meters per kilogram of coal. After 7 to 11 hours of passivation After chemical treatment, enter the area of ​​cooling zone 4 and cool to normal temperature. Coal char with a moisture content of 9% was obtained after passivation treatment.

[0060] It has been verified that the char after the above treatment has been placed in the environment for a long time, and its properti...

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Abstract

The invention provides a passivation process and a passivation system of active coke. The process mainly comprises: firstly, carrying out rehydration and cooling treatment on quenched active coke which is from the destructive distillation pyrolyzation treating process; then feeding the rehydrated active coke into a passivation react zone for low-temperature oxidation passivation treatment; and finally, cooling the coke which is treated by rehydration and low-temperature oxidation passivation to the normal temperature. Therefore, the coke has greatly-increased stability, and can not self-ignite under the conditions of long-distance transport and long time of being exposed to the environment; and simultaneously, the invention has the advantages that the cost of production technology is low, the system operation has simplicity, stability and high practicability and the production process has less pollution, thus the invention can be used in the process of large-scale active coke passivation industrial production.

Description

technical field [0001] The invention relates to a passivation process and a passivation system of active coal coke, in particular to a passivation process and a passivation system of activated coal coke after low-rank coal low-temperature carbonization and upgrading. Background technique [0002] my country has extremely rich coal resources, of which low-rank coal reserves account for more than 50%. Although low-rank coal reserves are abundant and the mining cost is low, its water content and volatile content are relatively high. The high water content in coal increases the transportation cost of coal from the coal field to the place of use, and also consumes a part of energy due to the evaporation of water during the combustion process of coal, which reduces the available calorific value; the volatile content of coal High, not only makes the dry coal highly active and prone to spontaneous combustion, but also reduces the combustion efficiency of coal and increases the emiss...

Claims

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Application Information

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IPC IPC(8): C10L9/00
Inventor 郭彩应
Owner HUNAN HUAYIN ENERGY TECH
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