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A platform for research: civil engineering, architecture and urbanism
Two-way roasting double-hearth shaft kiln and roasting method
The invention relates to a two-way roasting double-hearth shaft kiln and a roasting method. The two-way roasting double-hearth shaft kiln comprises a rotary feeding hopper, an opening and closing flashboard, a spray gun protection cover, a spray gun, a kiln hearth, a center nozzle, a discharging machine and a supporting frame. The double-hearth vertical kiln has the beneficial effects that the central nozzle is additionally arranged, so that parallel-flow roasting of the roasting kiln hearth and countercurrent roasting of the heat storage kiln hearth are realized, and a full-parallel-flow roasting mode of an original double-hearth vertical kiln is adjusted into a two-way roasting mode of'parallel-flow roasting and countercurrent roasting ', so that heat at the center and the periphery of the vertical kiln can be uniformly distributed; the double-hearth shaft kiln solves the problems of material underburning and the like caused by overlarge kiln hearth radius of the shaft kiln, improves the product roasting quality, is particularly suitable for large-size double-hearth shaft kilns of 800t/d and above, provides a new technical approach for large-scale double-hearth lime shaft kilns, also provides a new technical approach for development of low-calorific-value fuel double-hearth shaft kilns, and is suitable for large-scale large-scale double-hearth lime shaft kilns and low-calorific-value fuel double-hearth shaft kilns. The rotary kiln can be replaced by the low-nitrogen-oxide and low-calorific-value cheap fuel with the obvious advantages of low heat consumption and low ash rate, and the development prospect is wide.
本发明涉及一种双向焙烧的双膛竖窑及焙烧方法，包括旋转加料斗、开闭闸板、喷枪保护罩、喷枪、窑膛、中心喷嘴、出料机和支撑框架。其有益效果是：通过增设中心喷嘴，实现焙烧窑膛的并流焙烧和蓄热窑膛的逆流焙烧，将原有双膛竖窑的全并流焙烧方式，调整为“并流焙烧+逆流焙烧”的双向焙烧方式，可使竖窑的中心与周边的热量分配均匀，解决因竖窑窑膛半径过大引起的物料欠烧等诸多问题，提高产品焙烧质量，特别适用于800t/d及以上的大规格双膛竖窑，既为双膛石灰竖窑大型化提供了新的技术途径，也为低热值燃料双膛竖窑发展提供了新的技术途径，以低氧化氮、低热值廉价燃料、低热耗、低粉灰率的明显优势可替代回转窑，具有广阔的发展前景。
Two-way roasting double-hearth shaft kiln and roasting method
The invention relates to a two-way roasting double-hearth shaft kiln and a roasting method. The two-way roasting double-hearth shaft kiln comprises a rotary feeding hopper, an opening and closing flashboard, a spray gun protection cover, a spray gun, a kiln hearth, a center nozzle, a discharging machine and a supporting frame. The double-hearth vertical kiln has the beneficial effects that the central nozzle is additionally arranged, so that parallel-flow roasting of the roasting kiln hearth and countercurrent roasting of the heat storage kiln hearth are realized, and a full-parallel-flow roasting mode of an original double-hearth vertical kiln is adjusted into a two-way roasting mode of'parallel-flow roasting and countercurrent roasting ', so that heat at the center and the periphery of the vertical kiln can be uniformly distributed; the double-hearth shaft kiln solves the problems of material underburning and the like caused by overlarge kiln hearth radius of the shaft kiln, improves the product roasting quality, is particularly suitable for large-size double-hearth shaft kilns of 800t/d and above, provides a new technical approach for large-scale double-hearth lime shaft kilns, also provides a new technical approach for development of low-calorific-value fuel double-hearth shaft kilns, and is suitable for large-scale large-scale double-hearth lime shaft kilns and low-calorific-value fuel double-hearth shaft kilns. The rotary kiln can be replaced by the low-nitrogen-oxide and low-calorific-value cheap fuel with the obvious advantages of low heat consumption and low ash rate, and the development prospect is wide.
本发明涉及一种双向焙烧的双膛竖窑及焙烧方法，包括旋转加料斗、开闭闸板、喷枪保护罩、喷枪、窑膛、中心喷嘴、出料机和支撑框架。其有益效果是：通过增设中心喷嘴，实现焙烧窑膛的并流焙烧和蓄热窑膛的逆流焙烧，将原有双膛竖窑的全并流焙烧方式，调整为“并流焙烧+逆流焙烧”的双向焙烧方式，可使竖窑的中心与周边的热量分配均匀，解决因竖窑窑膛半径过大引起的物料欠烧等诸多问题，提高产品焙烧质量，特别适用于800t/d及以上的大规格双膛竖窑，既为双膛石灰竖窑大型化提供了新的技术途径，也为低热值燃料双膛竖窑发展提供了新的技术途径，以低氧化氮、低热值廉价燃料、低热耗、低粉灰率的明显优势可替代回转窑，具有广阔的发展前景。
Two-way roasting double-hearth shaft kiln and roasting method
一种双向焙烧的双膛竖窑及焙烧方法
ZHAO XIN (author) / WANG CHEN (author) / ZHAO BAOHAI (author) / ZHANG CHAO (author) / YANG GENGTAO (author) / BAI CHENG (author)
2022-06-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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