Author: laser
On June 28, the second phase of the Shanghai Lao Gang Renewable Energy Utilization Center (hereinafter referred to as the second phase of the Laogang) announced the official opening.The project is equipped with 8 750 -ton/day mechanical furnace incineration lines and 3 50 MW gallic steam turbines.After all horsepower opens, the average daily processing of waste can reach 6,000 tons.At that time, the total incineration of the first and second phase of the Lao Gang project will reach 3 million tons/year, accounting for about one -third of the total amount of garbage produced in Shanghai in Shanghai, becoming the world's largest waste incineration plant.
Seeing this news reminds me of another report from the Observer some time ago, MDASH; MDASH; this largest garbage mountain in Korea has been burned for 3 months:
In the morning of February in February, six workers were wearing dirty work clothes, anti -toxic masks, and climbed a 15 -meter -tall garbage mountain to try to extinguish the flame.However, they wiped out one place and burned the other place.
And this garbage mountain fire has been burned for 3 months, and there is no sign of the end.
According to the United States CNN (CNN) reported on March 3, local time, this garbage mountain in Yicheng County is the largest garbage dump in South Korea. It has been burning since December last year.Garbage crisis.Since China banned foreign garbage from entering the country on January 1, 2018, South Korea's export of plastic garbage in China has dropped by more than 90%.
The South Korean government said that this year plans to remove 21,000 tons of garbage from this burning mountain, but how the remaining 149,000 tons will be dealt with clearly.Lee Won-Jeong, owner of the garbage power plant, said that he hopes to build a incinerator in this place, but he admits that it takes 5 years to burn all the garbage.
Similar situations do not just appear in South Korea.For a long time, China has been the world's largest solid waste importer at present. According to reports, in 2016 alone, China has imported 7.3 million tons of plastic garbage and costs $ 3.7 billion (S $ 5 billion), accounting for the world's total import waste56%.In this case, for a long time, many countries around the world have exported their garbage and waste to China as the main way to solve their own garbage problems.However, with the Chinese government's paper ban, MDASH; mdash; from January 1, 2018, it is forbidden to import plastic waste from abroad and more than 20 other recyclable materials. China has been regarded as the era of the world's largest garbage dump by many countries.Completely end.
The impact of China's ban on waste removal in the world waste recycling industry is a disaster -level.Jimdot, president of Houston Waste Treatment Company, the largest domestic garbage recycler in North America; Fish's words are almost like closed valves overnight.Before the ban took effect, the price of recyclable waste products began to fall all the way.In October 2017, the price of waste paper in the United States plummeted by 35%to 40%.
Japan's life is not good.According to reports, from January to March 2018, Japan's export volume of abolished corrugated paper in China decreased by 40%year -on -year, and the price of waste paper wholesalers purchased waste corrugated paper from the recycling operators and other hands decreased by 17%.In addition, because China no longer receives imported waste, the Japanese Maritime Corporation, which transports waste, has suffered a lot.According to statistics from the Japanese Maritime Center, in February 2018, Japan's transportation volume to China containers decreased by 36%year -on -year, because the number of wood pulp, waste paper, and paper transportation was reduced by half according to categories.From the perspective of the number of transportation to China, paper and the like have also decreased significantly.
Lost the largest buyer in China, garbage recycling companies in foreign garbage exporting countries such as the United States, Australia, and Japan began to work hard to find substitutes, especially to export to Southeast Asian countries such as Malaysia and Indonesia.But no country can absorb so much recyclable garbage like the Chinese market.The tolerance of these countries is not enough.
In this case, more and more countries have begun to be plagued by garbage accumulated in their own country like South Korea.According to the Australian News Network (News.com.au) on April 20, 2009, since China had helped to deal with garbage before, there were only dozens of (A Few Dozen) garbage disposal stations.When China banned the import of foreign garbage, Australia's garbage treatment facilities are difficult to deal with existing volume.Australia's largest plastic manufacturing company Plastic Forests founder David Hodge (David Hodge) said: No one has been building any (handling garbage) infrastructure, and the Australian government has almost no actions in this regard (because China has begun to ban prohibitGarbage import) The problem of garbage treatment is imminent.
However, as people often say: opportunities are often coexisted with problems.China's stopping the garbage crisis brought by foreign garbage can also become a development opportunity for the garbage treatment industry.As the German Federal Environmental Protection Agency's Haga said: From the perspective of environmental protection, it is a good thing for China's export conditions to deteriorate, because it can promote German garbage sorting and waste reuse.If the demand for waste incineration rises, the price will be raised, making the recovery of waste products more competitive.In this regard, China has accumulated rich experience and can recommend the Chinese plan to the world.
There are three traditional garbage treatment methods, namely fertilizer, landfill and incineration.Compared with the fat, landfills and incineration can take into account both power generation and have significant economic benefits. Therefore, in recent years, my country has invested a lot of manpower and material resources in these two fields for development, and has achieved fruitful results.In the case of the world's garbage disaster today, the world's garbage -generated industries may be a new field of China's equipment manufacturing industry.
After the accumulation or landfilling of domestic waste, after microbial decomposition, hybrid gases dominated by methane and carbon dioxide will eventually 55%and 45%.This gas is combustible, and its heat value is greater than half of the equivalent of natural gas.The fire mountain fire in Yosheng County, Gyeongshang, Kaiti, South Korea mentioned earlier is caused by this reason.However, if a rational plan can be planned for the waste landfill, it can effectively use the waste landfill gas for power generation to achieve the purpose of turning waste into treasure.
In 2010, the technical demonstration project of the comprehensive utilization of the landfill in the landfill was jointly organized and funded by the Ministry of Science and Technology, the Chinese Academy of Sciences and the Beijing Science and Technology Commission.Through research, the project proposes the technical solution and design basis for landfill incineration and power generation, and realizes the localization of the two important equipment of 4,000 cubic meters/hnfilling gas incineration torch and 500kW -landed gas generator crew.The project won the Beijing Science and Technology Progress Award.The success of the project laid the foundation for my country's later large -scale development of garbagefill gas power generation.
On October 10, 2012, at that time, the largest garbage -filled gas power generation project in Asia, the EPC engineering bag of Shanghai Qiyao Power Technology Co., Ltd., was officially connected by MDASH; MDASH; Shanghai Laogang Waste Fitting Gas Power Generation Project.The old Hong Kong domestic garbage landfill consists of the fourth phase of the project, covering an area of 6.5 square kilometers, and the daily treatment of domestic waste is close to 10,000 tons, accounting for more than 50%of Shanghai's garbage output.One of the landfills.
The fourth phase of Shanghai Laogang is located in the East Beach Tu Bian on the east side of Laogang Town, Nanhui District, Shanghai. It covers an area of 3.36 square kilometers.The unit +5100 cubic meter/h biogas intervention processing device is composed. The design and production capacity of the project is 4,900 tons of urban domestic garbage, and the annual landfill gas is 81 million cubic meters, which is equivalent to 37,800 tons of standard coal; the annual transportation power is 110 million kWhThe average annual carbon dioxide reduction is about 660,000 tons.After the project achieves full load production, it can provide daily electricity consumption of about 100,000 residents.It can be seen that the overall solution of the export waste landfill+garbage landfill power generation solution is completely feasible.
Another way to generate garbage power is incineration.andCompared with the methods of composting and landfilling, incineration is the most reduced, harmless and resource -based garbage treatment method, so it has also become the first choice for urban waste treatment in my country.The construction of my country's domestic waste incineration plant began in the 1980s and began to enter the rapid development stage during the fifteenth period. According to the construction plan of the 13th Five -Year Plan for urban domestic garbage and the harmless treatment facilities issued by the Development and Reform Commission, garbage incineration is in the national urban domestic garbage treatment method. The proportion of China will increase from 31%in 2015 to 54%in 2020.In this case, some domestic equipment manufacturing companies have begun to enter this field, achieving localization of waste incineration equipment.
Generally speaking, the current type of mainstream incineration furnace can be divided into three categories: mechanical furnace incineration furnace, fluidized bed incineration furnace, and rotary kiln incinerator.Among them, the rotary kiln burning furnace is mainly used for incineration of industrial solid waste. It is mainly used for incineration of domestic garbage. The mechanical furnace incineration furnace and fluidized bed incineration furnace.
The mechanical furnace is a garbage layer burning incineration furnace, which is composed of the furnace block. The furnace is divided into a dry area, combustion area, and full -burn areas. The relative exercise between the stoves is continuously flipped, stirred and pushed forward to move forward.The garbage passed through the various areas on the furnace, until it was completely discharged.When running normally, the furnace temperature is maintained at 850 ° C ~ 950 ° C. In general, the heat from the burning can maintain the furnace temperature. When the heat value of the garbage is low, the fuel oil needs to be sprayed as auxiliary fuel.Using a mechanical furnace discharge, garbage does not need to be treated in advance, and the amount of treatment of a single furnace is large. The garbage is evenly distributed in the incineration furnace, and the combustion is sufficient. This is the biggest advantage of the mechanical furnace.
Different from the mechanical furnace stove, the fluidized bed incineration furnace uses a doubling technology for waste incineration.Setting sand is usually set in the furnace as a thermal carrier, also known as the bed material.Before incinerating the garbage, the heat carrier inside the furnace was heated to above 600 ° C to make it boiling. After the garbage was broken, it was put into the furnace.Burning after high.Due to the existence of the heat carrier, the fluidized bed incineration furnace has a stable combustion, good adaptability to garbage changes, and high burning efficiency. This is its biggest advantage.However, its disadvantages are also obvious: because the fluidized bed incineration furnace adopts a darning combustion method, the garbage is mixed with the heat carrier after crushing, so it requires the granularity of the garbage in the furnace.It's high.
The comprehensive performance of the mechanical furnace is the best.The furnace type is wide, no need to split the garbage and crushed, the waste incineration is sufficient, the operation is stable, and the imported dust concentration of the flue gas purification system can reduce the cost of the flue gas purification system and the fly ash treatment costs, which is very suitable for my country and the majority Developed countries have a low standardization of garbage classification. The characteristics of complexity, high moisture content and unstable thermal value in the furnaces are the most suitable for incineration furnace type for urban domestic waste incineration projects in my country and the majority of developing countries.
On September 3, 2018, the Ethiopian Ethiopian Lerby Garbage Plant, which was established by China Electric Power Engineering Co., Ltd. (referred to as China Electric), was officially completed and put into operation.Lyby Garbage Power Plant is the first garbage power plant in Africa and the first project of China -Egypt cooperation in the field of environmental protection.
Lyby Garbage Power Plant is located in the Coseshewedfill in the southwestern suburbs of Siyaba, the capital of Ethiopia.For more than 50 years, the vast majority of domestic garbage in Ayabiba has poured here, and over time, it has formed a garbage mountain with a height of more than 30 meters.This not only occupies a large amount of land, but also pollutes the groundwater and the surrounding environment, which is not conducive to the improvement of the ecological environment and the comprehensive utilization of resources.To solve this problem, the Ethiopian government decided to invest $ 100 million to build a Lebi garbage power plant.
The project started in September 2014 and was officially put into production on September 3, 2018.The project consists of 2Times; 600 tons/day mechanical furnace incineration furnace+2Times; 25MW steam wheel generator. The entire power plant uses Chinese standards and technology, all of which come from Chinese companies.In particular, the two 600 -ton/day mechanical furnace incineration furnace, which is a core equipment, is a product of Chongqing Sanfeng Environmental Industry Group Co., Ltd.This successful case proves that China's related clean energy companies have the ability to go global.It is hoped that Chinese companies can seize the opportunity and make a new world for manufacturing in China.
