Report on High Power Internal Combustion Low Carbon, Efficient, and Clean Power Generation of Lanzhou Carbon Tail Gas in Yulin City

Report on High Power Internal Combustion Low Carbon, Efficient and Clean Power Generation of Lanzhou Carbon Tail Gas in Yulin City

Yulin Municipal Government, Ecological Environment Bureau, and Industry and Information Technology Bureau:

The tail gas of the orchid charcoal industry in Yulin City is used for the production of LNG, ammonia, methanol, hydrogen extraction and other utilization methods. Due to the low calorific value, low hydrogen content, high requirements for deep purification, large investment, and slow efficiency of the orchid charcoal tail gas, it is less applied in the majority of small and medium-sized orchid charcoal enterprises in the market, and is widely used for power generation, with less investment and stable power generation returns, And the vast majority of small thermal power generation methods adopt the direct combustion of blue carbon exhaust gas to produce steam and steam turbine power generation. In the context of increasingly strict environmental requirements and the national dual carbon goals, small thermal power plants with high energy consumption, water consumption, pollution, and carbon emissions are no longer suitable for the current national low-carbon emission reduction policies. They must be replaced with lower carbon, more efficient, and cleaner power generation methods.

Jiangsu Shengyuan Gas Power Machinery Co., Ltd. relies on the high-tech of the NPG4000 gas internal combustion engine, which is the first major technical equipment in the national energy field in 2021 (National Energy Engineering Co., Ltd.), to develop a high-power internal combustion generator set with blue charcoal gas, achieving low-carbon, efficient, and clean power generation of blue charcoal exhaust gas. Compared with small thermal power, it is more energy-saving, water-saving, cleaner, environmentally friendly, more cost-effective, and more flexible to use. The comparison is as follows:

Compare items		High power internal combustion power generation	Small thermal power plant
Resources	Primary power generation efficiency	High, approximately 36%	Low, about 20%
	Gas volume load power generation efficiency	Multiple units combined, with varying total gas volume, consistently efficient power generation and low energy consumption	When the total gas volume is low, the load decreases, the power generation efficiency also decreases, and the energy consumption is higher
	Comprehensive power generation efficiency	High, flue gas can be utilized for waste heat or secondary power generation, with low energy consumption	Low, most energy volatilization losses, high energy consumption
	Water resource consumption	Almost no water consumption	50MW small thermal power consumes approximately 2 million tons of water annually
environmental protection	SO2 content in flue gas	Near zero, direct emission. Sulfide recovery as elemental sulfur	Approximately 1000mg/m3, requiring desulfurization treatment before discharge
	NOX content	＜ 100mg/m3, directly discharged	Approximately 1000mg/m3, requiring denitrification treatment before discharge
	Smoke and dust content	＜ 10mg/m3, directly discharged	Approximately 500mg/m3, requiring dust removal before discharge
	carbon emission	Low, light tar recovery	All high carbon alkanes such as high and light tar are burned, resulting in severe pollution
economy	Power generation efficiency	High, efficient operation of multiple units combined, with good returns	Low, single inefficient operation results in poorer returns
	High value light tar utilization	Recycling, high returns	Direct combustion with low returns
	Number of operating personnel	About 20 people, low labor cost	About 100 people, high labor costs
	Annual operating time	Approximately 7500 hours	Approximately 5700 hours
	Overhaul time	About 3 years, low maintenance costs	1 year, high maintenance costs
	Investment payback period	About 3 years, good economic performance	About 6-8 years, with poor economic performance
operational requirements	Operability	Simple equipment and easy operation	Complex equipment and strict operation
	safety	Low temperature and low pressure safety standards	High safety standards for high temperature and high pressure
	flexibility	Flexible operation of multiple combinations	Single machine operation is restricted

At present, the 3MW level blue carbon exhaust internal combustion power generation has been demonstrated and applied on the 600000 ton blue carbon furnace (with a single furnace capacity of 150000 tons) of Junkai Coal Electrochemical Co., Ltd. in Shenmu City, with an installed capacity of 30MW (10 units) × 3MW), flue gas SO2 close to zero, NOX<100mg/m3, can be directly discharged without treatment, meets national emission standards, conforms to the development concept of green environmental protection, and is green electricity.

We hereby report to the Yulin Municipal Government, the Ecological Environment Bureau, and the Industry and Information Technology Bureau that it is recommended to promote high-power internal combustion power generation with orchid charcoal exhaust gas in Yulin City, replacing the low efficiency, high energy consumption, and high emission low-grade utilization of small thermal power, achieving low-carbon, efficient, and clean utilization of orchid charcoal exhaust gas, promoting the upgrading and upgrading of the orchid charcoal industry, high-quality development, and efficient low-carbon transformation, and supporting the blue sky defense war, energy dual control, and carbon reduction action plan in Yulin City, Make contributions to China's dual carbon goals.

Jiangsu Shengyuan Gas Power Machinery Co., Ltd

January 3, 2022

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Report on High Power Internal Combustion Low Carbon, Efficient, and Clean Power Generation of Lanzhou Carbon Tail Gas in Yulin City

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