Contract energy management helps reduce thermal power generation

Liaoning Fuxin Jinshan Coal Gangue Thermal Power Co., Ltd., a 150MW thermal power plant turbine cold end system running VUES (vapor turbine condenser vacuum maintenance energy saving system) technology, will save more than 3,000 tons of standard coal annually, reducing CO2 emissions by about 0.8 million Tons, direct economic benefits over 2.5 million yuan.

In the steam turbine plant, Wang Yu, director of the operation department of Fuxin Jinshan Power Plant in Liaoning, told the reporter: “Since the VUES technology energy-saving renovation was implemented in 2011, it not only achieved the expected results, but also the energy-saving companies did not have a penny.”

Jinshan Power Plant adopted a contract energy management model for energy conservation. According to Wang Yu, contract energy management is an energy-saving business model that uses the reduced energy costs to pay for the full cost of energy-saving projects. This type of energy-saving investment allows power plants to upgrade their plants and equipment with future energy-saving benefits to reduce current operating costs; or energy-saving service companies provide energy-saving services to power plants in the form of promising energy-saving projects or saving energy costs as a whole.

After Jinshan Power Plant signed a VUES energy-saving service contract with Shenzhen Shinengketai Energy Management Technology Co., Ltd., Shinengketai has invested in all equipment for its early stage, and the resulting energy-saving and emission-reduction benefits have been divided into two. “VUES is an energy-saving system independently developed by us in 2008. It is mainly aimed at solving the problems of comprehensive on-line cleaning of condenser fouling and removal of circulating water debris, and improving the condenser heat transfer effect to improve condenser operation vacuum.” Shinengke Thai chairman Shen Zhongdong said.

“The energy saving and emission reduction of the condenser has always been a problem for the power plant.” According to Wang Yu, the previous cleaning condenser had to be shut down or unilaterally isolated, and the condenser end cover was disassembled, and the condenser was passed through the high pressure water gun, brush and other equipment tools. The scale and mud in the cooling pipe are cleaned and removed. “We have also used pickling, but they are not ideal and affect the power generation capacity.” Wang Yu said with a smile. “Using contract energy management and VUES technology not only achieved good cleaning results, but also greatly improved the unit. The efficiency of the operation."

The reporter learned that there are many companies like Jinshan Power Plant that use contract energy management and VUES energy-saving technologies to achieve energy-saving emission reduction. Shinengketai's VUES energy-saving technology has been successfully applied in thermal power, cement, steel and other industries, including Guodian, Datang, Huadian, Hebei Construction Investment, Zhenneng Group, Tianrui Group, Dongfeng Motor (600006, stocks) and other large-scale Industrial Enterprises. Under the general trend of energy-saving and emission-reduction, Shi Nengketai has been seizing the contract energy management mode and VUES innovation and energy-saving technology to combine development.

“At present, the proportion of VUES technology in the thermal power industry is still less than 1%, and there is still a huge space. Once it is widely used in thermal power units, it will have significant energy-saving and emission reduction benefits,” said Shen Zhongdong.

Shen Zhongdong calculated the accounts for the reporter. At present, Shineng Ketai has implemented dozens of thermal power units for energy saving and emission reduction reconstruction. If we reduce the coal consumption of 8 g per kilowatt-hour, we will save 50,000 tons of standard coal annually and the direct economic benefit will exceed 40 million yuan. It is understood that the optimization of energy-saving technology around the cold end of the World Energy Cotec has been selected into the national key energy-saving technology, and obtained a number of inventions and utility model patents.

As coal prices and costs have increased year by year, controlling costs through energy conservation and emission reduction has become the focus of energy conservation in thermal power companies. "In the case of insufficient funding for technological reforms, contract energy management is a new way for many power plants to implement energy-saving and emission reduction," said Zhang Min, director of the Institute of Steam Turbine Research at the Northeast Electric Power Research Institute.