Straw biomass high-temperature baking pulverizing device and method coupled with pulverized coal boiler

By realizing high-temperature baking and shaving of straw biomass in the same equipment, the problems of complex equipment and uneven heat transfer in the prior art are solved, and the processing efficiency and combustion effect of biomass fuel are improved.

CN120290197APending Publication Date: 2025-07-11HUANENG JIAXIANG POWER GENERATION CO LTD +1
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Patent Information

Application Number
CN202510403132.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-01
Publication Date
2025-07-11

AI Technical Summary

Technical Problem

In the prior art, the pretreatment device of biomass fuel is complex and has a large area, and the heat transfer is uneven, resulting in low efficiency in the process of carbonization and crushing, and the material is prone to lose heat during the transport process, making it difficult to achieve efficient coupling with the coal-fired boiler.

Method used

A straw biomass high-temperature baking and powdering device coupled to a coal powder boiler is designed, and a spiral feeding, ball-picking mechanism and flue gas uniform distribution structure is used to realize high-temperature baking and crushing of materials in the same equipment. The high-temperature flue gas is directly heated and the carbon powder is made by impact collision of wear-resistant steel balls.

Benefits of technology

It improves baking and powder making efficiency, reduces the equipment space, avoids heat loss during material transportation, realizes the direct coupling between biomass carbon powder and coal powder boiler, reduces processing costs and improves combustion efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN120290197A_ABST
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Abstract

The invention discloses a straw biomass high-temperature baking pulverizing device and method coupled with a pulverized coal fired boiler, the device comprises a shell, a conveying device, a pushing mechanism, a ball shoveling mechanism, a carbon powder sieve plate and a flue gas uniform distribution structure, and the pushing mechanism comprises a spiral shaft, a material pushing spiral piece and a plurality of material shoveling plates; the plurality of material lifting plates are connected between every two adjacent spiral sheets; the ball shoveling mechanism comprises a fixed sleeve, a ball shoveling plate and a ball collecting plate, and the fixed sleeve is fixedly arranged on the spiral shaft in a sleeving mode; the plurality of ball shoveling plates are arranged on the peripheral side of the fixed sleeve, and ball collecting plates are vertically arranged on the outer side edges of the ball shoveling plates; the carbon powder sieve plate is positioned between the carbon powder discharge hole and the material lifting mechanism; the flue gas uniform distribution structure is connected to the end, located in the shell, of the high-temperature flue gas inlet, materials are pushed to advance under rotation of the pushing mechanism, the materials are directly baked and carbonized through uniformly dispersed high-temperature flue gas, then the baked and carbonized materials are rapidly ground into carbon powder through the ball making mechanism, and the baking, carbonizing and powder making efficiency is remarkably improved.
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