■<주식투자.IPO등>/태양광·ESS·폐기물·연료전지발전

Waste Incineration Plant in Wuhan, China.-A Feasibility Study

Bonjour Kwon 2014. 3. 7. 17:48

Sofia Ekstrand
Annicka Wänn
The purpose of this feasibility study has been to investigate different conditions necessary when building a solid waste incineration
plant with power generation in Wuhan, China.

 

The conditions havebeen divided into four different main topics; situation in Wuhan,technology, law system, and economics. The section of the situation of Wuhan deals with the three differnt types of solid waste; municipal,industrial and hazardous waste. This section also identifies the climateof Wuhan and how the population copes with cold winters and hot summers.

 

The section of technology briefly gives an overview of an incineration plant with power generation then explores the potentials of
district heating and district cooling in Wuhan. The section on the law system first gives a clear understanding the laws in Sweden that apply to waste management and waste incineration.

 

 The same is done with the law system for China. After this a comparison is done to underline similarities and differences in the law systems. The last section is on the economics of waste showing how much waste collection, transport
and handling cost, the price of electricity and the cost of wages for the personnel at an incineration plant.


Summary
This thesis has been done as a feasibility study for building and operating a waste incineration plant in Wuhan, China. Focus has been on the prerequisites in four areas;


situation in Wuhan today, technology, economics, and law system.

 

 This thesis is done by order of Borlänge Energy who has cooperation with the city of Wuhan and in the future
may try to apply for a permission to build an incineration plant in Wuhan together with another company.
Every day 6000 tons of municipal solid waste (MSW) is produced and collected in the city centre of Wuhan. The MSW in Wuhan has a higher water content thus resulting in a lower heat value of 6,6MJ/kg compared to Swedish conditions of 10,1MJ/kg.

 

 The heat value of 6.6MJ/kg can be used as fuel in an incineration plant and should most likely be incinerated in a fluidising bed to achieve better combustion chamber efficiency. The trend in Wuhan is moving towards an increase in polymers in the MSW and thus higher heat value which is a result of increasing affluence in the city.


The local government of Wuhan has plans to build three waste incineration plants with energy recovery. Two different companies have received the contracts for two of these incineration plants. Both of these incineration plants are planned to generate power.
There would be a potential for the incineration plants to also produce district heating and district cooling since the climate of Wuhan is cold in the winter and hot in the summer.

 

The most common form of heating and cooling today is with air condition units. This would mean that the old apartment complexes would probably not be able to benefit from the district heating and district cooling network, however the newer buildings are built
with radiator systems running on coal or natural gas and these could be converted to allow for district heating and district cooling.
The law systems of China and Sweden differs in the definition of waste such that China has the criteria that the material has to cause pollution to be classified as waste,

 

but in Sweden it is enough that the holder intends to discard the material to classify it as waste. The producer responsibility in Sweden has several laws describing it, whereas in China it is embedded in the Solid Waste Law. Furthermore the emission standards to air from an incineration plant are harsher in Sweden than they are in China.

 

All in all the
similarities seem more common than the differences in waste laws. The local government of Wuhan supports different partnership methods such as BOT (build-operate-transfer) and CDM (clean development mechanism) projects to
allow for new technology and money to be invested in Wuhan.
The parts of the economics that would support building and operating a waste
incineration plant with energy recovery in Wuhan are; subsidized price for electricity
generated by waste incineration plants, domestic production of fluidized beds, low wage
cost compared to Sweden, demand for heating and cooling. on the other hand the fee that
the incineration plants receives for handling the waste is low compared to Sweden, to
build the district heating and district cooling network would require large investments
and the low heat value of the MSW may cause costs for supplementary fuels.
The conclusion of this thesis is that it is definitely possible to build and operate a
municipal solid waste incineration plant in Wuhan.