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Coal or biomass medium low temperature pyrolysis quality improving system and method for producing quality improved coal, high calorific value pyrolysis gas and tar or liquefied synthetic oil by utilizing same

A technology for low-temperature pyrolysis and upgrading of coal, which is applied in the fields of production of upgraded coal, high calorific value pyrolysis gas and coal tar or liquefied synthetic oil, chemical cycle reaction system, low-temperature pyrolysis and upgrading system of coal or biomass

Active Publication Date: 2011-04-13
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] So far, there is no chemical cycle reaction system for coal pyrolysis upgrading, in which moisture and volatiles in coal can be removed at medium or low temperature pyrolysis temperature, and the reaction system can The chemical cycle in the system to obtain upgraded coal, high calorific value synthesis gas, and coal tar or liquefied synthetic oil system

Method used

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  • Coal or biomass medium low temperature pyrolysis quality improving system and method for producing quality improved coal, high calorific value pyrolysis gas and tar or liquefied synthetic oil by utilizing same
  • Coal or biomass medium low temperature pyrolysis quality improving system and method for producing quality improved coal, high calorific value pyrolysis gas and tar or liquefied synthetic oil by utilizing same
  • Coal or biomass medium low temperature pyrolysis quality improving system and method for producing quality improved coal, high calorific value pyrolysis gas and tar or liquefied synthetic oil by utilizing same

Examples

Experimental program
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Embodiment 1

[0107] take as figure 1 The shown coal pyrolysis upgrading system implements the method for producing upgraded coal, high calorific value pyrolysis gas and coal tar or liquefied synthetic oil of the present invention

[0108] First, lignite of the following chemical composition was crushed into particles having the following particle size distribution using conventional crushing equipment.

[0109] 15 cm > 100 wt% bituminous coal particle size > 5 cm

[0110] Catalytic-heat carrier-oxygen transfer material is Fe 2 o 3 , which has the following particle size distribution:

[0111] 1 mm > 100% by weight catalytic-heat carrier-oxygen transfer material > 1 micron

[0112] 100 microns > 95% by weight catalytic-heat carrier-oxygen transfer material > 10 microns

[0113] The particle size of the above-mentioned particles is determined by a sieving method or a specific surface area method.

[0114] In weight %, the chemical composition of lignite is as follows (dry basis):

[0...

Embodiment 2

[0140] The lignite particle of crushing among the above-mentioned embodiment 1 is equal to or similar pyrrhotite (Fe (1-x) S) (wherein (1-x) is generally about 0.8) after mixing with a weight ratio of 99:1, the resulting mixture is injected into the medium and low temperature pyrolysis furnace (100) with the same method as in Example 1. Under the catalysis of pyrrhotite and FeS produced in the coal pyrolysis process, the coal or the tar produced by coal pyrolysis will be cracked and hydrogenated with the hydrogen in the pyrolysis gas to form low molecular weight liquefied synthetic oil.

[0141] Finally, in mol%, the chemical composition of coal pyrolysis gas is as follows:

[0142] Table 6

[0143] CO

[0144] The calorific value of the above-mentioned pyrolysis gas after dehydration is about 15900 kJ / m3, so it can be seen that it is still a gaseous fuel with a relatively high calorific value.

[0145] In weight %, the chemical composition of the synthetic oil is...

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Abstract

The invention relates to a coal or biomass medium low temperature pyrolysis quality improving system and a method for producing quality improved coal, high calorific value pyrolysis gas and tar or liquefied synthetic oil by utilizing the system. By utilizing the system and the method, effective capture of carbon dioxide can be realized. The system comprises a medium low temperature pyrolyzing furnace in a moving bed type preferably, at least one catalysis-heat carrier-oxygen transfer material regenerator communicated with the medium low temperature pyrolyzing furnace, a solid-solid separator and a condenser. In the medium low temperature pyrolyzing furnace, raw coal is subject to medium low temperature pyrolysis, and the quality improved coal, the high calorific value pyrolysis gas and the tar or liquefied synthetic oil gas are produced, wherein the tar or liquefied synthetic oil gas is condensed into jar or liquefied synthetic oil; and in the catalysis-heat carrier-oxygen transfer material regenerator, a saturated waste catalysis-heat carrier-oxygen transfer material is regenerated by oxidation and enters into the medium low temperature pyrolyzing furnace again, thus realizing regenerating cycle of catalysis-heat carrier-oxygen transfer materials.

Description

technical field [0001] The present invention relates to the comprehensive utilization and conversion of coal or biomass, in particular, to a chemical cycle reaction system for pyrolysis and upgrading of coal or biomass, and more specifically, to a medium-low temperature pyrolysis of coal or biomass An upgrading system and a method for producing upgraded coal, high calorific value pyrolysis gas and coal tar or liquefied synthetic oil by using the system. Background technique [0002] Among many traditional coal and biomass conversion technologies, such as coal combustion, coal gasification, coal pyrolysis and other technologies, coal pyrolysis upgrading technology has become a recent trend because it can simply convert coal into fuels and chemicals at low cost. It is a hotspot of coal utilization research in the world. Researchers at home and abroad have proposed different coal upgrading process routes by improving the process. Currently, several upgrading processes have re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/14C10B57/00C10B53/04C10B49/16C10B49/00C10G1/00
CPCC10L9/08C10B53/02C10G1/02C10B49/16Y02E50/14C10G2300/4043C10G2300/1011C10B53/04C10B49/18Y02E50/10Y02P30/20Y02P30/40
Inventor 刘科崔哲
Owner CHNA ENERGY INVESTMENT CORP LTD
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