Kemira’s desalination solutions for a power plant in China are lowering costs and improving performance.

Last December, Kemira started cooperating with the governmental authority that runs the TangShan KaiLuan DongFang power station, located in China’s TangShan City, in order to improve the plant’s desalination processes. The coal-fired power plant provides heat to residences and electricity to the grid in this booming community of over 1.5 million people, situated in an important industrial region of northern China.

“At the time the customer contacted Kemira, they already had the reverse osmosis equipment systems in place but were using a local brand of chemicals with very high cost and poor performance as well as poor service,” explains Liu ZhengJia, Commercial Operation & Application Manager, Kemira Shanghai. “So, the customer decided to hold a public bid for imported brands only.” Kemira won the bid and now provides the plant with Antiscalant Kemguard 11-310C, an antiscalant that is injected into feed water before it enters the reverse osmosis system.

The TangShan KaiLuan DongFang power plant reports that Kemira’s solution has resulted in a reduction of at least 30 percent in the total water management cost. Kemira provides the plant with an antiscalant that is injected into feed water before it enters the reverse osmosis system. The end result is clean water that is good for industrial use.

Cooperation ensures stable performance

The plant uses salted groundwater to power the boiler. The water is desalinated through reverse osmosis. “Antiscalant is a must to keep the desalination system running at the designed performance and running duration,” notes ZhengJia.

“We provide a good antiscalant base on the water quality with less dosage and stable performance, as well as onsite technical support. We did a whole system survey and taught the customer how to find a better solution. Also, we provided the customer a recommendation on how they can improve the entire system,” recalls ZhengJia.

Kemira brings cost savings

“We are satisfied with Kemira’s products and services,” says Zhu HongXing, Deputy Manager, Power Generation Department, TangShan KaiLuan DongFang Power Generation Plant. “We get a more stable performance with even much lower product consumption, which allows us to save a lot on total costs.” HongXing estimates total treatment cost savings of at least 30 percent with Kemira’s products. 

“Reverse osmosis has become an increasingly common pure water production unit, but proper chemicals are a must to keep the reverse osmosis system running smoothly. Kemira’s solution provides the clean water needed for the boiler to operate efficiently.”

In Brief: Cooperation between Kemira and the TangShan KaiLuan DongFang power station

• 150 MW coal-fired power station located in TangShan City, HeiBei province, China
• Kemira provides the plant its Antiscalant Kemguard 11-310C, along with onsite system survey, commissioning and whole-system diagnosis
• Customer reports stable performance with much lower product consumption, which saves on total costs.

Text Satu Jussila
Photo TangShan KaiLuan DongFang