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A method for passivating and cooling anthracite and its integrated device

A technology of anthracite and cooling gas, applied in coke cooling, solid fuel, fuel, etc., can solve the problems of unsatisfactory passivation effect of dry distillation pyrolysis anthracite, low thermal efficiency of the device, no recycling and other problems

Active Publication Date: 2019-01-08
SHAANXI COAL & CHEM IND GRP SHENMU TIANYUAN CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the unsatisfactory passivation effect of pyrolysis anthracite in the prior art. For high-grade heat energy above 220°C-250°C, there is no recycling, the thermal efficiency of the device is low, and the dry distillation pyrolysis anthracite cannot be stored for a long time and long-distance Transport defects, which in turn provides a way to passivate cooled anthracite

Method used

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  • A method for passivating and cooling anthracite and its integrated device
  • A method for passivating and cooling anthracite and its integrated device
  • A method for passivating and cooling anthracite and its integrated device

Examples

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Effect test

Embodiment 1

[0049] Embodiment 1, the method for passivation cooling anthracite:

[0050] A method for passivation cooling anthracite, comprising the steps of:

[0051] (1) cooling the pyrolyzed anthracite at 550°C to 250°C to obtain pretreated anthracite;

[0052] (2) reacting the anthracite pretreated in step (1) with an inert gas to activate the anthracite with oxygen to form a medium-temperature passivated anthracite at 220° C., wherein the inactive gas is flue gas and air at 130° C. or a mixture of nitrogen, the volume fraction of oxygen in the inert gas is 20%;

[0053] (3) adopt the industrial reuse water of water treatment to carry out cooling and hydration reaction simultaneously to the medium temperature passivation anthracite of described step (2), obtain the low temperature passivation anthracite of 60 ℃, the water content of this anthracite is 12% (mass fraction) .

Embodiment 2

[0054] Embodiment 2, the method for passivation cooling anthracite:

[0055] A method for passivation cooling anthracite, comprising the steps of:

[0056] (1) cooling the pyrolyzed anthracite at 600°C to 220°C to obtain pretreated anthracite;

[0057] (2) react the anthracite pretreated in step (1) with an inert gas to activate the anthracite with oxygen to form a medium-temperature passivated anthracite at 150° C., wherein the inactive gas is flue gas and air at 180° C. Or a mixture of nitrogen, the volume fraction of oxygen in the inert gas is 8%;

[0058] (3) adopt the industrial reuse water of water treatment to carry out cooling and hydration reaction simultaneously to the medium temperature passivation anthracite of described step (2), obtain the low temperature passivation anthracite of 40 ℃, the water content of this anthracite is 6% (mass fraction) .

Embodiment 3

[0059] Embodiment 3, the method for passivation cooling anthracite:

[0060] A method for passivation cooling anthracite, comprising the steps of:

[0061] (1) cooling the pyrolyzed anthracite at 580°C to 220°C to obtain pretreated anthracite;

[0062] (2) react the anthracite pretreated in step (1) with an inert gas to activate the anthracite with oxygen to form a medium temperature passivated anthracite at 180° C., wherein the inactive gas is flue gas and air at 180° C. Or a mixture of nitrogen, the volume fraction of oxygen in the inert gas is 15%;

[0063] (3) adopt the industrial reuse water of water treatment to carry out cooling and hydration reaction simultaneously to the medium temperature passivation anthracite of described step (2), obtain the low temperature passivation anthracite of 50 ℃, the water content of this anthracite is 8% (mass fraction) .

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Abstract

The invention discloses a method for passivating and cooling anthracite and an integrated device thereof. The method includes the steps that 1, the anthracite subjected to pyrolysis at the temperature of 550-600 DEG C is cooled to reach 220-250 DEG C, and pretreated anthracite is obtained; 2, the pretreated anthracite reacts with inert gas to conduct oxygen activation on the anthracite so as to obtain middle-temperature passivated anthracite of 150-220 DEG C; 3, cooling water is adopted to simultaneously conduct cooling and hydration reaction on the middle-temperature passivated anthracite in the step 2 to obtain low-temperature passivated anthracite of 40-60 DEG C. The device comprises a feeding bin, a feeding conveyor, a passivating and cooling rotary device and a discharging conveyor which are connected in sequence. Passivation, destructive distillation and pyrolysis of anthracite can be effectively performed and high-grade heat energy can be recovered by adopting the method and the device.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a passivation cooling anthracite method and an integrated device thereof. Background technique [0002] The distribution of resources in my country is that there is little coal, oil and gas. Although coal resources are relatively abundant, low-rank coal with low utilization value occupies a considerable proportion. Therefore, the development of low-rank coal into high-rank coal technology has become the focus of energy research and development in my country. [0003] Up to now, the technologies for developing low-rank coal into high-rank coal are as follows: circulating fluidized bed solid heat carrier rapid coal upgrading technology, gas heat carrier rapid coal upgrading technology, belt coal dry distillation upgrading technology, moving bed Coal upgrading technology, rotary reactor coal upgrading technology. Through years of tests and verifications,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B57/00C10B39/02C10B39/00C10L9/00
CPCC10B39/00C10B39/02C10B57/005C10L9/00
Inventor 王守峰刘新李万善张鹏江昊沛赵欣宇
Owner SHAANXI COAL & CHEM IND GRP SHENMU TIANYUAN CHEM IND
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