Directing against the problems existing in positive pressure dense-phase pneumatic ash conveying system for straw directly burning in Baoding Xiexin Biomass Power Generation Co Ltd

such as insufficient conveying capability of the granary pump for ash hopper of the cyclone separator

slagging in ash hopper of said separator

and blockage easily occurred in ash conveying pipeline etc.

some measures have been put forward

i.e.increasing the output capacity of the granary pump

adding another ash conveying pipeline

and increasing the assisting force in said pipeline etc..After implementation

the above-mentioned problems have been basically solved.The accumulatd operation hours of said boiler reach 6983 h(210 days)

the maximum load of said boiler reaching 85t

the minimum load being 40 t

the average load becoming 55 t/h

the longest continuous operation time reaching 63 days.Practical result of operation shows that the above-mentioned ash conveying technology can be successfully used for plant ash conveying for straw directly burning boilers.