Boiler Promote Heating and Help Carbon Neutrality. What Kind of Boiler is most Suitable?

November 08, 2021

The heating season has come, and heating has become a hot spot for residents. In the "quick freezing" mode that is about to enter, the demand for heating has increased sharply. Industrial boilers play a very important role as an important equipment to provide heat required by heat users.

As China announced its determination to "carbon emissions" at the United Nations General Assembly, "carbon peaks, carbon neutral" was included in the Chinese government's work report, so the environmental protection requirements for industrial equipment are getting higher and higher. As a large energy consumer, how the national heating system can effectively implement green, environmentally friendly and energy-efficient policies and measures in the process of achieving carbon peaks and carbon neutrality is not only an urgent task at present, but also a long-term arduous task.

What can the boiler do to achieve carbon neutrality?

The boiler plays an irreplaceable role in the entire heating process. From the initial coal-fired boiler to the clean heat source recommended by the newcomer, no boiler is required to participate in it.

If we can start with the boiler and produce more heat with less fuel, we can reduce carbon emissions.

The energy consumption of energy-saving industrial boilers must be systematically considered from the three aspects of boilers, pipe networks and heat-using equipment. Using the theoretical energy-saving potential analysis method, it is determined which heating method is more energy-saving under the same load conditions, which method is adopted.

At present, my country’s heating system is dominated by coal-fired industrial boiler heat source plants. The coal consumption of the coal-fired industrial boiler heating system accounts for about 1/5 of the country’s total coal consumption. The average operating thermal efficiency of the boiler is nearly 60%-65%. The grid heat loss is 4%-10%; the recycling of condensed water is low; the boiler water treatment facilities are not scientifically perfect, the heating system automatic control and detection level is low; the operation maintenance and management level is low, and the heating system energy utilization rate is only about 35%, the potential for energy saving is huge.

Energy-saving field of industrial boiler heating technology

1.Boiler and ancillary equipment selection and boiler room design energy-saving technology

2. Energy-saving technology for boiler and ancillary equipment renovation

3. Energy-saving measures for economic operation

4. Energy-saving technology of waste heat recovery in boiler room

5. Energy-saving technology for heat transfer and distribution

6. Energy-saving technology for condensate recycling

7. Typical heat-using process and equipment energy-saving technology

Energy-saving technology for industrial boilers

1.Cogeneration technology

Cogeneration technology refers to the production method and technology of off-efficiency energy for the joint production of heat (steam) and electric energy. It has the combined effects of saving energy, improving the environment, and increasing power supply.

Main target:

①Build cogeneration units in areas where the heating load is the main heating load, and the heat load is relatively concentrated or with great potential;

②In areas where the industrial load is the mainstay, build a heat-based back pressure based on local conditions Units;

③In areas where heating is the main demand and the heat load is small, central heating should be developed first, and cogeneration should be developed after the plant is available.

④In small and medium-sized cities, the construction of circulating fluidized bed as a The main technology of the combined heat, electricity and gas supply will transform the existing scattered small coal-fired boilers into centralized heating, which saves a lot of energy for the country.

2. Waste heat and pressure utilization technology

Waste heat and pressure utilization technology refers to the technology that recovers and utilizes the remaining heat and pressure generated in the production process to save energy and reduce pollution. It has been applied to boiler economizers, air preheaters, converters, and expansion On equipment and devices such as flat, preheater, waste heat boiler, heat pump, gas-steam combined cycle, etc.

Waste heat is the heat energy that is not used in the thermal process and is directly discharged into the surrounding environment. It is mainly high-temperature flue gas, combustible waste gas, combustible waste slag, high-temperature solids, high-temperature slag, liquid products, condensed water, and chemical reaction waste heat from the boiler. . The waste heat of various industries accounts for 17% to 67% of the total heating value of its fuel consumption, of which about 60% can be recycled.

3. Clean coal technology

Clean coal technology refers to the general term for new technologies such as coal processing, combustion, conversion and pollution control in order to reduce pollution and improve efficiency, including coal preparation, coal briquette, coal water slurry, fluidized bed combustion, flue gas desulfurization, and coal gas Technologies such as gasification and coal gasification combined cycle power generation and coal liquefaction. my country’s current energy structure is dominated by coal, and it is the world’s largest producer and consumer of coal. This energy structure will not change significantly for a long time in the future. Therefore,the use of clean coal technology has very practical and far-reaching significance.

4. Advanced energy consumption monitoring and control technology

Advanced energy consumption monitoring and control technology refers to the technology that monitors energy usage in a timely manner and controls energy usage, including the status of parity and reasonable use of energy, supervision and monitoring of energy supply status, and detection of energy consumption indicators of energy-using products , Verification, technical performance monitoring and evaluation of energy-consuming products, processes and related processes, equipment, networks, etc., supervise the energy-saving management status of energy supply and use units, and evaluate new construction, expansion, and energy-saving technological transformation projects (projects) Reasonable use of energy, etc.

Adopting advanced energy consumption monitoring and control technology is of great significance for strengthening the management of energy utilization, and for detecting excessive energy consumption in a timely manner to prevent excessive energy use and waste.

What kind of boiler is more energy-saving and environmentally friendly to choose and is conducive to achieving carbon neutrality?

Regarding the previous energy-saving technologies, such as cogeneration technology, waste heat utilization technology, clean coal technology, etc., although energy saving can be achieved to a certain extent, due to geographical restrictions, many users are still unable to achieve such technical applications and cannot pass these technologies. Energy-saving technology realizes energy saving in boiler operation.

Taking into account the initial investment and construction, later operating costs, geographical restrictions, stable operation and other factors, EPCB adopts customized boilers to make a stable, high-efficiency and energy-saving boiler system that meets the needs of users on-site.

EPCB continues to increase the research and development of boiler energy saving and emission reduction technology under the call of "carbon peak and carbon neutrality". And recently it has made a major breakthrough-it can help companies save at least 5% while reducing carbon emissions by 5%. EPCB has further optimized the composition of the existing boiler system, while optimizing the link of waste heat recovery, so that the boiler system forms a true closed loop. The boiler can absorb all the heat of the fuel. The fuel utilization rate reaches 98% in the true sense.

What are the boilers of energy-saving and environmentally friendly boilers?

1.Low Nitrogen Fuel/Gas Boiler

Low-nitrogen fuel/gas boiler refers to a boiler that uses clean energy such as natural gas as the boiler fuel. The fuel itself produces relatively low harmful substances. Combined with low-nitrogen technology, it effectively controls the emission of nitrogen oxides within the scope of national emission requirements.

At present, the technical parameters of this kind of boiler can reach the rated evaporation capacity of 1-20T/H, and the rated thermal efficiency can reach 98%.

EPCB's oil and gas boilers can be divided into three series:

1.Horizontal fire tube oil/gas boilers;

2.Fully automatic condensing oil/gas boilers;

3.Double drum water tube oil/gas boilers.

All three types of boilers use an automated system, which saves manpower and makes the operation more convenient.

2. Biomass-Fired Boiler

Biomass boiler refers to a boiler that uses energy such as biomass, wood, and rice husk as fuel. Biomass fuel has the characteristics of zero emission of carbon oxides, high efficiency and recyclability. EPCB biomass boiler air emission standards will be designed in strict accordance with the policies of the national environmental protection department, and fully comply with the national environmental protection policies.

At present, the rated evaporation capacity of the common biomass-fired boiler technical parameters is 2.8-25T/H, and the rated thermal efficiency can reach 90%.

EPCB biomass-fired boilers can be divided into three series:

1.Fixed furnace drainage fire tube-fired biomass boilers;

2.Chain furnace drainage fire tube-fired biomass boilers;

3.Chain furnace drainage tube-fired biomass boilers.

EPCB boiler designs a reasonable boiler structure according to different fuel characteristics, making EPCB industrial boilers more energy-efficient and more stable operation.

Conclusion:

Regarding the promotion of social development as part of the company's development concept, it binds the interests of customers with the interests of the company. This has always been the case for EPCB boilers. What EPCB does is beneficial to customers and social development.