Integrated fluidized bed mild-gasification lignite upgrading system and technology

A fluidized bed and mild technology, which is applied to the overall fluidized bed mild gasification lignite upgrading system and process field, can solve the problems of high cost of lignite upgrading, low system operation reliability, environmental pollution, etc.

Active Publication Date: 2010-09-01
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the technical process systems are very complex, lignite upgrading costs are high, system operation reliability is low, and there is a lot of pollution to the environment, etc. There is still a long way to go before real large-scale industrial application

Method used

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  • Integrated fluidized bed mild-gasification lignite upgrading system and technology
  • Integrated fluidized bed mild-gasification lignite upgrading system and technology

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Embodiment Construction

[0020] The structural principles and process principles of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Referring to the accompanying drawings, the integral fluidized bed mild gasification lignite upgrading system of the present invention includes a crushing and screening system 1, the material outlet end of the crushing and screening system 1, the raw coal bunker 2 of the pre-dryer and the low-value gas incinerator The feed port of the raw coal bunker 20 is connected, the discharge port of the raw coal bunker 2 of the pre-dryer is connected with the feed port of the feeder 3, and the discharge port of the feeder 3 is connected with the feed port of the pre-dryer 4. The feed port ends are connected, the air outlet end of the blower 6 is connected with the air inlet end of the low-value gas incinerator air preheater 5, and the air outlet end of the low-value gas incinerator air preheater 5 is connected wi...

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Abstract

The invention discloses an integrated fluidized bed mild-gasification lignite upgrading system and integrated fluidized bed mild-gasification lignite upgrading technology. The lignite is subjected to pre-drying treatment by using high temperature air generated by a low-value gas-fired incinerator so as to remove part of moisture in the lignite; the lignite is delivered to a fluidized bed mild-gasification lignite upgrading reactor for partial gasification, destructive distillation and combustion reaction, wherein one part of heat generated in the reaction is used for maintaining the temperature in the reactor and the other part of heat is used for removing the moisture in the lignite; and the lignite upgraded by the fluidized bed mild-gasification lignite upgrading reactor is delivered to a finished product cooler for cooling and then delivered to a finished product warehouse, and the generated low-value gas is fed to a subsequent low-value gas-fired incinerator for burning. The system and the technology have the characteristics of simple process, convenient operation, low energy consumption, less pollutant discharge, and no waste water discharge.

Description

technical field [0001] The invention relates to a material drying and upgrading system and process, in particular to an integral fluidized bed mild gasification lignite upgrading system and process. Background technique [0002] Lignite is a common coal with a low degree of coalification. It is the initial product of organic biorock after peat deposition after dehydration and compaction. It is named for its brown or dark brown appearance. Lignite is mostly dull, with a true density of 1.10-1.40g / cm 3 Among them, the moisture is as high as 30-60%, high volatile content, low ignition point, non-bonding, easy weathering and deterioration, containing native humic acid, high oxygen content, strong chemical reactivity, poor thermal stability, is a flammable fossil fuel. Primary humic acid is the main characteristic component that distinguishes lignite from other coals. [0003] China's proven lignite reserves have reached 130 billion tons, accounting for about 13% of the countr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/00C10B57/10C10J3/60
CPCY02P20/129
Inventor 徐正泉肖平蒋敏华李强江建忠郭涛时正海吕海生
Owner XIAN THERMAL POWER RES INST CO LTD
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