POWERMAX BIOMASS GASIFICATION POWER PLANT

The basic principle of POWERMAX’s biomass gasification system(abbreviated as BGPS) is to convert Agriculture and forestry products and wood processing remains (including rick husks, wood powder, branches, offcuts, corn straws, rice straws, wheat straws, cotton straws, fruit shells, coconut shells, palm shells, bagasse, corncobs and etc.) into combustible gas . It is then used as fuel in gas engine to generate electricity. Biomass gasification successfully conquers the disadvantages of biomass, such as low flammability and wide diversity. Biomass gasification system is characteristic of small land requirement and environment friendly. It’s one of the most effective way of biomass utilization.

Our biomass gasification process includes three steps. The First step is biomass gasification, which convert biomass into syngas. The Second step is syngas purification. The producer gas coming from gasifier usually contains contaminants including dust, coke, tar and etc. The contaminants will be removed by the purification system to ensure normal operation of gas engine. The Third step is power generating in gas engine. The high temperature exhaust gas may be reused by waste heat boiler to generate steam or hot water for civil or industrial use). Steam turbine may also be considered to make a gas-steam combined cycle power plant, which will increase the total efficiency.

The POWERMAX biomass gasification power generation systems are based on a modular concept and are able to applicable for 50-20000KW biomass power station. There are four series of biomass gasification system offered by POWERMAX which ranges from 50-2000KW of power generation: CFBG (Circulating Fluidized Bed Gasifier) Series, UFBG(Updraft Fixed Bed Gasifier) Series, DFBG(Downdraft Fixed Bed Gasifier) Series, TFBG(Twin-fire Fixed Bed Gasifier). A series biomass generator sets from 50KW to 1000KW are developed by POWERMAX to combine with POWERMAX advanced gasification technology. These gas generator sets are using the high efficiency Siemens technology alternators, Chinese top brand medium speed gas engine(500-1000rpm) with advanced European engine control systems. The high performance of the POWERMAX biomass gasification plants and the later production of electricity with the gensets represents a competitive solution when compared with conventional boiler-fired system.

Comparing with other renewable power generating system, POWERMAX-BGPS is characteristic of:

1). Flexibility. Gas engine, gas turbine and even waste heat recovery boiler may be used considering various power plant capacity requirements. It ensures high power generating efficiency. Different capacities of biomass power generation plant can be designed with various types of POWERMAX-BGPS system.

2). Clean technology. Biomass, as one kind of renewable energy, may reduce the emission of carbon dioxide, sulfur dioxide causing from fossil fuel. Nitrogen oxides emission is very limited in our biomass gasification power generating system because of low temperature (700°C~1200°C).

3). Economic. POWERMAX-BGPS is capacity flexible. Even small size biomass power plant is also profitable. Simple process and less land requirements make biomass gasification power plant more economic comparing with other renewable energy. Generally speaking, biomass gasification power generating is the most economic technology in renewable power generating plant, the cost of which is nearly the same as small-size conventional power plant.

ABOUT CHP

Combined heat and power(CHP) also known as cogeneration, is an efficient,clean,and reliable approach to generate power and thermal energy from a single fuel source.By installing a CHP system designed to meet the thermal and electrical base loads of a facility,CHP can greatly increase the facility's operational efficiency and decrease energy costs.At the same time,CHP reduces the emmission of greenhouse gases,which contribute to global climate change.

The Powermax biomass gasification power plant is a biomass system that utilizes the biomass as its energy sources. We have included this section about CHP generally to give yuo a better understanding of this increasing interest and technlogy evolving aound this alternate energy option.

Dry Type Gas Purification Systems make Biomass Gasification System More Environmental Friendly

Traditionally biomass gasificaton utilizes a Wet Type Gas Purification System which normally contains scrubber or spary tower use water to direct washing the producer gas of particulates, tar and at same time cooling the gas. Wet Gas Purification System requires a large quantity of water ,and for environment, it is a secondary water pollution due to its direct contact with gas. In addition it can consistently increase the tar particulate concentration levels in the water if a recirculation process is used. The pond or cooling tower can also emit vapors of PAHs (Polycyclic Aromatic Hydrocarbons) and Ammonia. Wet Gas Purification systems typically also generate large quantities of water that will need treatment for longer reuse and eliminates the opportunity for heat recovery. Wuxi Teneng Power Machinery Co.,Ltd.(Powermax) found these conditions to be a significant barrier for many installations in various countries so they put their scientists to work and developed this exclusive Dry Gas Purification System. The first Dry Type Gas Purification system was sucesfully run for a 1MW DFGBPP(fuel rice husk) in China in 2008. After that Powermax Dry Type Gas Purification System has been many uesed with Powermax DFBGPP,CFBGPP,UFBGPP and the new TFBGPP all over the world.

Dry Type Gas Purification Delivers Installation Opportunities

With Dry Type Gas Purification System there is no direct contact with the producer gas therefor no dirty washing water generation. It eliminates challenges of a foul smell as there is no process water pond and evaporation cooling requirements and offers a substantial savings in water otherwise needed for gas cooling. There is no slug produced with Type Gas Purification System, eliminated cumbersome sludge handling requirements. Best of all heat is recovered from hot gas which can be used for drying applications, heating purpose, or by thermal oil heat exchanger for ORC to make free electricity.

Producer Gas (Syngas) Quality & Dry Type Gas Purification System Benefits

The Dry Type Gas Purification System is consistent which allows for a smooth operation of the gas engine without fluctuations of power.
Average CV of the Gas is >1100-1200 kcal/Nm3.
Tar content in gas after cleaning is <5-10 mg/Nm3.
Particulates after filtering is <5-10mg/Nm3.
Both particulates and tar are removed in a dry form in Powermax's dry type ESP which makes handling easier. Ammonia is also removed through dissolution in condensate and only a small quantity (condensate) needs to be treated. There is also a possibility of recovering ammonium salts, which is a useful fertilizer, from condensate. And hot air is generated in the Gas Temperature Control Sub-system during the cooling of the gas which can also be used for drying of the biomass or send back to gasifier for increasing the efficiency of gasifier.

Dry Type Gas Purification System totally eliminates any adverse environmental impact as no harmful vapours or particulates are released into the environment. The systems are extremely user-friendly and have no adverse health impact of operators or other associated people.