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Process for preparing carbocoal, coke tar and coal gas by treating bovey coal by suspending pyrogenation device

A suspension pyrolysis and lignite technology, applied in coking ovens, petroleum industry, direct heating and dry distillation, etc., can solve the problems of large-scale, energy consumption, water consumption, high investment costs, etc., to improve flammability, heat transfer Uniform and reduce heat consumption effect

Active Publication Date: 2008-10-22
SHENYANG XINBO IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0040] Although the use of the above-mentioned process equipment has produced good effects on lignite upgrading, it generally consumes more energy and water, and some of them occupy a large space, heavy equipment, high investment costs, or are limited in scale and cannot be large-scale

Method used

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  • Process for preparing carbocoal, coke tar and coal gas by treating bovey coal by suspending pyrogenation device
  • Process for preparing carbocoal, coke tar and coal gas by treating bovey coal by suspending pyrogenation device

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Gas heat-carrying lignite suspension pyrolysis device, including hammer dryer 1, drying heat generator combustion chamber 2, first pyrolysis cyclone separator 4, suspension pyrolysis furnace 5, second pyrolysis cyclone separator 6, and retention tank 7. First coke quenching cyclone separator 10 , second coke quenching cyclone separator 9 , third coke quenching cyclone separator 11 , semi-coke cooler 12 , oxygen source heater 13 and oil gas cooler 14 .

[0061] The outlet of the hammer dryer 1 is connected to the first pyrolysis cyclone separator 4 through the standpipe 3, and the smoke outlet of the combustion chamber 2 of the drying heat generator is connected to the smoke inlet of the hammer dryer 1 through the pipeline 15. The road 15 is connected to the gas outlet of the oil-gas cooler 14 through a branch pipe 16 . Suspension pyrolysis furnace 5 is a cylinder, divided into upper and lower chambers, with a constriction in the middle. The raw material lignite is added...

Embodiment 2

[0068] For lignite of the following composition and characteristics:

[0069]

[0070] Gejin test oil extraction rate is 35kg / t (dry coal)

[0071] The implementation steps and the result of adopting the processing device of the present invention are:

[0072]The lignite raw material is fed into the hammer dryer 1 to be pulverized into granular coal and fire powder, and is heated and dried by the 400°C hot flue gas generated by the combustion chamber 2 of the drying heat generator to remove most of the free water (outer water and inner water) ), exit the drier at 130°C, enter the cyclone separator 4 after staying in the standpipe 3 for several seconds, the separated exhaust gas enters the exhaust gas treatment system, and the solid particle coal with a residual moisture of 8% enters at a temperature of 130°C Inside the suspension pyrolysis furnace 5. Suspension pyrolysis furnace feeds appropriate amount of oxygen and coal gas for mixed combustion, heats dry coal to 600°C,...

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Abstract

The invention relates to a gas heat carrier brown coal suspension pyrolysis device, and adopts the following process: brown coal is fed in a hammer type drier for crushing and drying with the drying temperature lower than 400 DEG C, and then is fed in a suspension pyrolysis oven at 110 to 130 DEG C to generate semicoke and tar gas mixed gas; when separated by a first pyrolysis cyclone separator, the tar gas mixed gas is fed in oil gas cooling gas and is discharged after cooling; semicoke is fed in a detention tank; after pyrolysis reaction and quenching coke through a three-stage quenching coke system, the semicoke is fed in a semicoke cooler and then is fed in a storage yard after cooling; quenching coke gas is fed in an oxygen source heater to cool down oxygen source gas, and then is fed in an oil gas cooler as cooling medium to cool down tar gas mixed gas. Compared with the prior process, the gas heat carrier brown coal suspension pyrolysis device reduces land occupation, investment and labor force, and has uniform thermal transmission, fast speed and high output capacity of tar and coal gas; moreover, the pyrolysis device improves the flammable characteristics of semicoke product and is convenient for safe storage and transportation; in addition, the pyrolysis device has the advantages of lower heat consumption, higher output capacity of semicoke, tar and coal gas and cooling water conservation, etc.

Description

technical field [0001] The invention relates to a method for preparing semi-coke, tar and gas by pyrolyzing lignite, which can be applied to industries such as coal, coal chemical industry, energy and power. Background technique [0002] Although my country's coal resources are relatively rich, high-quality coal resources only account for about half, and the rest are lignite and other coal resources. Young coal such as lignite is often regarded as a low-quality fuel power coal due to its high moisture content, high ash content, high volatile content, and low calorific value; in addition, it is easy to oxidize and spontaneously ignite, and is not suitable for long-distance transportation, so it has become a coal that is difficult to process and utilize in different places resource. [0003] Lignite is a high-volatility coal, and its molecular structure can be regarded as a combination of anthracite and oil and gas molecules. The oil and gas components in lignite are separate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B49/10
Inventor 赵骏程云驰周宇江邹成徐立波苏勇
Owner SHENYANG XINBO IND TECH
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