As the steam boiler supplier of the potato industry in Xiji County, ZOZEN Boiler, with its eco-friendly SZL series coal-fired boiler, helped many enterprises such as Ningxia Jiali, Wanli Starch and Yaxue Starch realize the efficient waster-water utilization to improve the economic and environmental benefits of Xiji County in Ningxia.

ZOZEN steam boilers realized the efficient waster-water utilization for the potato industry in Xiji County

ZOZEN steam boiler helped Ningxia Jiali complete the technical transformation for environmental protection

In the production of potato starch, enterprises need a large amount of steam to isolate the protein from the waste water. Meanwhile, in the processing of potato starch, the quality of steam required in the dejuicing, dehydration, drying and other links also has a certain influence on the quality of potato starch.

In order to solve the pollution problem of waste water on the potato starch production lines, Ningxia Jiali decided to upgrade the original boiler system and introduce a new set of large-tonnage coal-fired steam boiler with strict requirements on its environmental protection performance. After learning the actual demands, ZOZEN customized the boiler system solution with high cost performance to help Ningxia Jiali successfully complete the technical transformation.

The installation site of ZOZEN steam boiler at Ningxia Jiali

ZOZEN eco-friendly coal-fired steam boiler realized the “zero” waste water discharge of potato production lines

This solution adopted the SZL series coal-fired steam boiler designed based on the advanced technology and experience at home and abroad. The boiler is composed of two parts. The upper part is the heating surface. According to the different coal characteristics, the furnace arch and furnace can be reasonably arranged in different structures to achieve better combustion effects. The lower part is the grate which adopts multiple separate air chambers and dampers to meet the air demands at different fuel combustion stages and improve the fuel utilization via the precise air distribution. The boiler has sufficient output and high efficiency to meet the steam demands of potato processing industry.

In order to meet the local environmental protection standards, there also were dust removal, desulfurization and denitration devices at the tail of the boiler which matched the production lines of Ningxia Jiali. The flue gas generated by low-NOx combustion was processed by SNCR denitration, bag dust removal and limestone-plaster method desulfurization to make the emission concentration of particulate matter, SO2, NOx, mercury and other compounds meet the environmental protection standards. Meanwhile, all the waste water from the soft water system during the potato processing could be used for slurry preparation of desulfurization tower; and the boiler drainage could be used for water spraying and dust reduction in the closed coal bin and cinder storage. All of these not only reduced the environmental pollution, but also greatly reduced the operating costs of the boiler system.

ZOZEN 20 tph SZL series coal-fired boiler is operating at Yaxue Starch

With the successful application of ZOZEN SZL series steam boiler at Ningxia Jiali, many other local potato starch manufacturers also cooperated with ZOZEN Boiler. So far, ZOZEN has had a 85% boiler market share in Guyuan, Ningxia and also has won a good market reputation.