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Technique and system for preparing low-nitrogen biomass gas from high-nitrogen antibiotic mushroom dregs

A technology of antibiotic bacteria residue and biomass gas, which is applied in the direction of gasification process, combustible gas production, combustible gas purification, etc., to achieve the effect of inhibiting the formation of NOx precursors

Pending Publication Date: 2017-12-29
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

At present, regarding the thermochemical treatment process or technology of antibiotic bacteria slag, whether it is thermochemical conversion to prepare high-grade bio-based fuel, or combustion for direct energy supply, for its high fuel nitrogen——NO x Precursor - NO x Transformation control, does not involve specialized means or methods
Patent CN104819470B mentions the reducing atmosphere of the gasification process and the multi-stage air distribution means of the combustion process, which also belong to common sense and conventional means. x Consider reducing NO at the source of production (fuel nitrogen conversion) x generated solution

Method used

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  • Technique and system for preparing low-nitrogen biomass gas from high-nitrogen antibiotic mushroom dregs

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Embodiment 1

[0029] A process for preparing low-nitrogen biomass gas from high-nitrogen antibiotic bacteria residues, comprising the following steps:

[0030] 1S. Bacteria slag passes through the drying chamber 1 to exchange heat indirectly with the low-temperature flue gas countercurrently to remove moisture;

[0031] 2S. The dried fungus slag is passed into the roaster 2 to exchange heat indirectly with the medium-temperature flue gas countercurrently, and the nitrogen structure of the unstable fuel is decomposed into gas-phase nitrogen, and the roasting gas is precipitated during the process;

[0032] 3S. The baked fungus slag enters the gasifier 3 to form fuel gas, and the updraft gasification is carried out under the action of the primary gasification medium, that is, air, and the secondary gasification medium, that is, normal temperature flue gas, is passed into the gasifier 3 Reduction zone, suppress NO in gas x (Nitrogen oxide) precursor generation; unreacted substances form carbo...

Embodiment 2

[0037] Such as figure 1 As shown, the system for preparing low-nitrogen biomass gas from high-nitrogen antibiotic bacteria residues includes a drying chamber 1, a roaster 2, a gasifier 3, a combustion furnace 5, a gas purification chamber 7, and a gas-solid separator 6. The drying chamber 1 is divided into an outer drying flue 14 and an inner fungus residue drying passage 15, the drying flue 14 is provided with a low-temperature flue gas inlet 16 and a low-temperature flue gas outlet 19, and the fungal residue drying passage 15 is provided with There is a fungus residue drying inlet 11 and a fungus residue drying outlet 18; the roaster 2 is provided with an outer baking flue 23 and an inner fungal residue baking channel 24, and the baking flue 23 is provided with a medium-temperature flue gas inlet 25 and a medium-temperature The flue gas outlet 26, the fungus dregs roasting channel 24 is provided with a fungus dregs roasting inlet 21 and a fungus dregs roasting outlet 28, one...

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Abstract

The invention discloses a system for preparing low-nitrogen biomass gas from high-nitrogen antibiotic mushroom dregs. The system comprises a drying room 1, a baking device 2, a vaporizer 3, a combustion furnace 5, a fuel gas purification room 7 and a gas-solid separator 6; the drying room 1, the baking device 2, the vaporizer 3, the gas-solid separator 6 and the fuel gas purification room 7 are connected in sequence; the combustion furnace 5 is connected with the baking device 2, the vaporizer 3 and the gas-solid separator 6; and the combustion furnace 5, the fuel gas purification room 7, the baking device 2, the drying room 1 and the vaporizer 3 are connected through smoke tubes in sequence. The system has the advantages that the generation of an NOx precursor in fuel gas is effectively inhibited in three aspects, or the concentration of the NOx precursor is reduced, so that low-nitrogen biomass gas is obtained.

Description

technical field [0001] The invention belongs to the technical field of biomass resource utilization, and relates to a thermochemical conversion technology of industrial biomass waste, in particular to a process method and a system for preparing low-nitrogen biomass gas from high-nitrogen antibiotic bacteria residues. Background technique [0002] Antibiotic scum comes from the antibiotic fermentation process, and its main components are mycelia, remaining medium, fermentation metabolites and a small amount of residual antibiotics. Because of its formation process, antibiotic bacteria residue is rich in organic matter and bacterial protein, and its calorific value is equivalent to that of low-rank coal, which is a typical industrial biomass waste. According to statistics, in 2009, the production of antibiotic residues in my country has reached 1.0×10 7 tons, with the development and demand of the medical and health industry, its output is increasing every year. As a biomass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/02C10J3/84C10K1/02C10K1/34
CPCC10J3/02C10J3/84C10K1/02C10K1/026C10K1/34C10J2300/0909C10J2300/0956C10J2300/0916C10J2300/0946C10J2300/1603
Inventor 吴创之詹昊庄修政阴秀丽
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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