After the hottest investment of tens of millions,

2022-08-12
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After tens of millions of investment, small cogeneration units are still "in a dilemma"

"environmental protection documents one by one, we are all busy this year!" An employee of a power generation enterprise in Anhui said to Polaris power, "now we have completed the ultra-low emission transformation of several small power plants, but the transformation will be carried out after the new requirements come down, and even if it meets the standard, it may be shut down..."

recently, Polaris power learned from a power generation enterprise in Anhui, The joint office for air pollution prevention and control of Suzhou issued a notice on accelerating the control of white plumes from coal-fired power plants in late August 2018, which requires some power generation enterprises in Suzhou to tap their potential, strengthen management, and continue to manage white plumes on the basis of stable ultra-low emissions. However, behind this series of requirements, today's small cogeneration units are still in a dilemma after investing tens of millions of environmental protection transformation funds

coal power generation capacity reduction + environmental protection local requirements are gradually becoming stricter

in 2016, the national development and Reform Commission and the National Energy Administration launched a "combined fist" of coal power generation capacity reduction. For a time, "the list of coal power generation units suspended and suspended" has become the focus of major power plants. At the same time, the state and society have higher and higher requirements for environmental protection, so coal-fired power plants have to face the dual requirements of capacity reduction and environmental protection

at the end of 2016, the general document of the 13th five year plan for power development (year) was finally issued, which requires "strive to eliminate the backward thermal power production capacity of more than 20million kW, and all qualified coal-fired units above 300000 kW to achieve ultra-low emissions". Under the requirement of capacity reduction, units below 300000 kW bear the brunt. This year's government work report clearly proposed to "eliminate and shut down coal-fired power units below 300000 kW that fail to meet the standard"

in the first half of this year, the national "air pollution prevention and control" battle began, and all regions have made time restrictions on the ultra-low emission work of full caliber coal-fired power plants, and the disposal measures for unqualified units are not the strictest, but only more stringent! (: put more pressure on | local governments are stricter than the State Council! The coal-fired power units will be shut down immediately before the ultra-low transformation is completed)

the ultra-low emission transformation has been completed, and the shutdown is still needed for "emission reduction"

Polaris learned that by the end of 2017, China's coal-fired power units below 300000 kW were about 150million kW. With the promotion of local air pollution prevention and control plans, a large part of these 150million kW units have completed ultra-low emission transformation by the end of October this year. However, these units immediately "shut down" after reaching the standard

with the advent of the "haze season" when the implementing agency adopts high-precision gear to accelerate the micro motor drive friction body to stop the linear reciprocating friction movement, all regions have issued emergency temporary special control measures to ensure air quality. Polaris found that the small coal-fired units that have completed the ultra-low emission transformation in recent years have also been ranked in the forefront of documents such as "heavy pollution weather warning, enterprise production restriction and emission reduction"

"even though our small power plants have reached the ultra-low emission standard, they still don't allow full load power generation, and only half of the units are allowed at most." An employee of a power generation enterprise in Anhui told Polaris

as we all know, the state will implement environmental protection electricity price policy for units undergoing ultra-low emission transformation to subsidize the investment of power plants in environmental protection transformation. However, if the unit cannot generate electricity at full load, the fuel will not be fully burned, and the emissions will exceed the standard, so this part of the environmental protection electricity price will have to be refunded, let alone shut down. Moreover, low load power generation will also bring multiple risks of consumption of environmental protection facilities, loss of environmental protection electricity price and excessive emissions. Frequent startup and shutdown will cause damage to the unit, and failure to shut down will also waste tens of millions of environmental protection investment. These have become a problem for the whole thermal power industry, and the anti risk ability of small units is weaker, so the contradiction is more prominent

ultra low emissions followed by "white elimination" requirements

in 2017, the Zhejiang provincial emission standard of air pollutants for coal-fired power plants (Exposure Draft), which is known as the "strictest emission standard", proposed that "coal-fired power boilers located in the main urban areas and ambient air sensitive areas of the city should take smoke temperature control and other effective measures to eliminate gypsum rain, colored plumes and other phenomena." Since then, Zhejiang Province has also provided technical requirements for gypsum rain and colored plume testing

in March this year, Tianjin required to carry out in-depth upgrading and transformation of key industries, and implement the "white plume" benchmarking treatment for 20 public coal-fired power units in the city. Subsequently, Shanxi Linfen and other places also issued the notice on urging and accelerating the control of white plumes from steel, coking and coal-fired power plants

however, Polaris learned that there are many places that lack specific requirements for the standard of white plume control and the process path that should be selected, which leads to the problem that many small power plants do not know whether or how to carry out transformation. Employees of a power generation enterprise in Anhui go north for senior office chairs, strollers The technology of the toy car's experimental machine has been introduced to you countless times. The pressure bearing polar star said: "Our small power plant has spent tens of millions of funds in the ultra-low emission transformation that has just been completed, and now it is difficult to add a sum of funds immediately. Moreover, the local government has no specific requirements, just say to 'eliminate white'. If the test fails to meet the standard, it will be shut down, but even if it meets the standard, we are not sure when it will be shut down."

the cogeneration unit, which is responsible for heating, cannot be shut down.

as early as 2016, Deng Jianling, who was then the deputy general manager of Huadian Group, pointed out in an interview with China Power News: "thermoelectricity is still mainly public welfare, because it is really related to people's lives. We can't expect thermoelectricity to earn much money. Instead, we should focus on services, people's livelihood, and comprehensively promote the process of urbanization. We should maintain its public welfare and maintain principal and small profits. Therefore, thermoelectricity is more social thermoelectricity and thermoelectricity."

Polaris had previously involved an enterprise in a dilemma of "shut down or not" when sorting out the list of shut down units in the coal and power industry in 2018

the enterprise is located in Zhengzhou, Henan Province, and has two 135000 kW cogeneration units that have completed ultra-low emission transformation. However, these two units have been included in the shutdown plan of the action plan for comprehensive treatment of air pollution in autumn and winter in Beijing Tianjin Hebei and surrounding areas, which is expected to complete the shutdown of these two units by the end of October 2019. The person in charge of the enterprise in Henan told Polaris, "at present, our company is still responsible for local heating, but since the shutdown plan was released, it has had a great impact on our normal production and the employees are also panicked. Let me ask, if we are really shut down, who will supply heat to local residents?"

last month, four coal-fired units of Huaneng Beijing Thermal Power Plant were started as emergency standby units in the heating season. How can the cogeneration unit, which undertakes the heating task, be shut down

as for the solution measures, the three-year action plan for winning the blue sky defense war issued by the State Council and all regions did clearly put forward "building ultra-low emission coal-fired units to replace the units below 300000 kW that fail to meet the standard by the same amount". However, in the context of energy transformation, it is not suitable to "increase the size and suppress the size". What is more, the small cogeneration units that have invested tens of millions of environmental protection transformation funds are now facing this problem. How should existing resources be disposed of, required and utilized? "Dilemma" of small cogeneration units

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