scope of application

Manufacturing, clean energy

Technology provider

Heilongjiang Helte Biomass Energy Development Co., Ltd.

Brief description of technology

This technology adopts today's world's leading straw combustion technology. Straw direct combustion does not require crushing, briquetting or granulating. Straw moisture content and impurities have broad requirements. The product has outstanding characteristics such as maintenance-free, safe and easy operation, low operating costs and long life. The product application is mature, thermal efficiency and environmental emissions are at the world's advanced level, and has strong competitive advantages. The products are widely used and are highly consistent with national policy support. The potential market scale is huge, the application prospects are broad, and the economic, environmental and social benefits are huge. The main equipment includes: gasification chamber, post-combustion chamber, heat exchanger, dust reduction chamber, charging system, dust removal system and out-of-stock equipment, etc.

technical information

The biomass boiler has a power of 3MW, with a production period of 150 days. The fuel type is corn/rice straw. The calorific value of the straw is 2500kcal/kg, and the straw quantity is 3823 tons/year.

Commercial applications

no

Help/support you hope to receive during the technology transfer process

no

equipment investment

Taking a 3MW (4 steam tons) grain-drying biomass boiler as an example, the investment amount of the main equipment and other auxiliary equipment required for one time is explained. The fuel type of biomass boiler is corn or rice straw, the calorific value of straw is 2500 kcal/kg, and the straw consumption is 3823 tons/year. The straw fuel specification is straw square or round. The feeding method can be selected according to the situation of the project location. Automatic feeding or manual feeding, and the boiler emissions are in line with local emission standards. The main equipment of the boiler includes: gasification combustion system, collective post-combustion module, heat exchange module, water wall system (pipes, pumps, heat exchangers), charging system, safety protection system, dust reduction chamber, etc. The estimated one-time investment amount The total price is 1.8 million yuan (RMB). Under the condition of operation and maintenance in accordance with the boiler operation and maintenance instructions, the service life of the boiler main body (referring to steel frame, water wall, header, gasification/combustion equipment, excluding economizer and valve instruments) can reach up to 30 years.

Annual operation and maintenance fee

Taking a 3MW (4 steam tons) grain-drying biomass boiler with a production period of 150 days as an example to illustrate the operating cost of the system. Boiler fuel cost: The average price of raw straw fuel (calorific value of 2500Kcal/kg) is 200 yuan (RMB)/ton, 3823 tons of corn straw are consumed during the entire production period, and the fuel cost during the entire production period is 765,000 yuan (RMB). Electricity charge for biomass boiler operation (total motor power 150kw): 7500 yuan (RMB). The number of stokers in each shift is 2, calculated based on the salary of 4000 yuan (RMB)/person/month. The system maintenance fee per production period is 25000 yuan (RMB). The total operation and maintenance expenses are approximately 837,500 yuan (RMB).

investment recovery period

Taking a 3MW grain-drying biomass boiler as an example for economic analysis: the system purchase cost is 1.8 million yuan (RMB)/set; the system's heat output is 3MW, each production period is 150 days, and 200 tons of grain can be dried every day. Assuming that coal is used as fuel to dry grain, the average coal price is 840 yuan (RMB)/ton, the entire production period is 1720 tons, and the fuel cost during the entire production period is 1.4448 million yuan (RMB); if corn straw is used as fuel (moisture below 15%, soil content below 7%) to dry grain, the average straw fuel price is 200 yuan (RMB)/ton, 3823 tons of straw are consumed during the production period, and the fuel cost during the production period is 765,000 yuan (RMB). The difference in the cost of the two fuels per production period is 679,000 yuan (RMB). The electricity consumption and labor costs of the two fuel forms are basically the same. The purchase cost or conversion cost can be recovered in about two production periods and up to three years.

added benefit

Using Helth products to replace coal with a whole bundle of straw can reduce fuel costs by about 50% per year, and replacing straw pellets with a whole bundle of straw can reduce fuel costs by about 30% per year. Every ton consumed can generate approximately 200 yuan (RMB) in fertilizer raw materials revenue, and approximately 58-162 yuan (RMB) in carbon trading revenue.

comprehensive benefits

Helth's "Energy Generation of Whole Bages of Straw Gasification and Combustion" is a technology introduced by Germany. It has been successfully used in Europe and the United States for nearly 20 years. Compared with similar products at home and abroad in terms of economy, convenience, safety, reliability, and Thermal efficiency and emissions all have obvious competitive advantages. Using Helth products to replace coal with a whole bundle of straw can reduce fuel costs by about 50% per year, and replacing straw pellets with a whole bundle of straw can reduce fuel costs by about 30% per year. With the promotion and application of "whole bundle of straw gasification and burning energy" technology and products at home and abroad,"straw bundled boilers","straw pellet boilers" and "circulating fluidized bed boilers" will show rising and falling competitive trend. Helth products allow straw bundles to be burned directly without any special treatment, do not require warehouses in winter, and do not add any combustion-supporting agents. Various application scenarios can bring ideal profits to users and minimize the reliance on "Belt and Road" national government subsidies. It will solve the problem of environmental pollution caused by burning crop straw such as plantains and rice and domestic garbage in the Belt and Road countries, and reduce agricultural production by using crop straw and domestic garbage as energy for power generation, heating and cooling, and grain drying. Carbon emissions contribute to the realization of the world's emission reduction goals.

Level of impact of obstacles on technology transfer

no

technology maturity

Helth's product design breaks through the traditional boiler gauge theory and adopts a new furnace body structure and system structure. It mainly consists of a charging system, a gasification chamber, a post-combustion chamber, a safety protection system, a heat exchanger, a dust chamber, etc. The form of straw fuel is a whole bundle without crushing, briquetting or granulating. Helth's product technology is specialized to meet the energy utilization of straw, and different gasification structures meet different uses, different application scenarios and site conditions. Atmospheric space ensures low-intensity, low-temperature and low-flow rate gasification to achieve ash separation. The combustion chamber burns at high temperatures under low ash conditions without a large amount of coking, has low chlorine content and reduced corrosion risk. Multi-level accurate air supply, smoke is tar and corrosion-free, achieving clean combustion and optimized emissions. The 85- 1200kW unit has no dust remover, and its emissions comply with emission regulations of most countries except China. The heat exchange surface has no combustion, no tar, no coking, easy cleaning and longer service life. Refractory materials are used in large quantities in the combustion system, which are easy to ignite and store energy, helping clean combustion. The modular mode is convenient for transportation and production, and the output can be varied without affecting clean combustion. Different types of stalk biomass fuels under different working conditions can be used. The combustion residue can be fully returned to the field to fully burn the carbon content in the flue gas is 1-10mg, eliminating the basis for the generation of dioxins. Independent unit thermal power is 27kW-10MW, and module combinations can achieve greater power. Meet various needs for steam boilers, hot water, hot air (direct and indirect), heat transfer oil and CO2 biological fertilization. Helth automatic feeding system can be used for dust removal and drying of straw bales. The system operates at low risk and has a patented explosion-proof device.

technical applicability

Helter whole bundle gasification combustion energy technology can be widely used in "One Belt and One Road" countries, especially "distributed" facility agriculture and animal husbandry, small town intensive heating and refrigeration, industrial drying, industrial steam and cogeneration, etc., can meet the "distributed" heating and refrigeration, grain drying, industrial drying, industrial steam, facility agriculture and aquaculture, power generation in various agricultural industrial parks, etc.

technical stability

The straw fuel used in the Helth whole-bundle straw gasification and combustion boiler is in the form of a whole bundle, which does not require briquetting and granulation. The moisture content of the straw bundle can reach up to 30%. No combustion-supporting agent is used during the combustion process, and no coking or tar is generated during the operation. The Helth boiler's patented design structure and combustion control ensure the most adequate combustion of straw, high calorific value, boiler efficiency of more than 85%, low auxiliary equipment and other supporting costs, safe and easy operation, low operating costs, and long service life. It can meet the GB13271 -2014 boiler air pollutant emission standard and has strong technical and economic competitive advantages. Helth technology has complete system advantages from structure, materials, control to safety and explosion protection. The large space and large capacity of straw in the gasification and combustion system lead to the stability of heat power and heat output. Modular and centralized structures can further enhance stability. The segmented, multi-stage, and different temperature and pressure thermochemical reaction processes optimize the formation and emission values of CO, dust, dioxins, tar, coking, NOx, etc., which is the "proactive" basis for solving emission problems. The high-temperature process makes it possible to enter the even little-known realm of physical thermochemistry, circumventing unfavorable factors and allowing various factors to complement each other.

technical safety

This technology and product have invention patents from relevant countries such as the European Union, and its emissions meet European standards. It can be directly used for grain drying in Europe. The boiler body and pipelines are basically free of coking oil formations during operation. The coking proportion of straw combustion residue is less than 1%. The equipment connected to the gasification chamber has no obvious coking particles, which can effectively improve the service life of the furnace body and the system. and operational safety. Helth products have advantages in safety and explosion protection: gas generator shut-off device, water-cooled overpressure safety valve, frequency conversion induced draft fan multi-stage deceleration, water-cooled automatic cooling system, precision electronic control system, patented safety device, multi-stage fixed temperature thermal reaction.

Barriers to technology transfer and promotion

no

intellectual property transfer

Patent holder: Patent name of Heilongjiang Helte Biomass Energy Development Co., Ltd.: Gasification boiler ZL200480030110.7 for solid fuels, especially straw bundles, and optimal exhaust gas; combined heat exchange device without combustion system ZL201821509779.X; Multi-functional collective post-combustion system ZL201821509780.2; ZL201821509832.6, a modular thermal system with variable output, multiple fuels, low emissions and high efficiency; ZL201821509831.1, a gasification device that is especially suitable for automatic feeding and whole bundle burning of plant stalks; A whole bundle of biomass gasification device with low dust emission and more stable gas composition ZL201821981915.5; ZL201822279196.9 a device to prevent dioxin emissions during fuel incineration; ZL201920472837.4 a modular heat exchange device that is particularly suitable for biomass combustion systems.