Coal-fired industrial boiler renovation

It is understood that by the end of 2012, China has 467,000 coal-fired industrial boilers with a total capacity of 1.78 million steam tons. Smoke, sulfur dioxide and nitrogen oxides accounted for about 33%, 27% and 9% of the total national emissions, respectively. Coal-fired industrial boilers are in urgent need of treatment. Based on the current situation of the basic resources of "rich coal, poor oil and less gas" in China, the control of industrial boilers can not ban coal combustion in one fell swoop. For a long time to come, coal will still be the main component of energy in our country. Therefore, how to use coal resources efficiently and cleanly is the key to solve the haze, control the atmospheric environment and adjust the energy structure.

Two major ways to transform coal-fired industrial boilers

The highest proportion of coal-fired industrial boilers is the high-temperature chain grate boiler. The transformation of high temperature chain grate boilers has important environmental benefits for air pollution control. The two core issues surrounding the reduction of incomplete combustion losses and heat loss from exhaust gases. There are two ways to modify the high temperature chain grate boiler:

One is to carry out technical transformation and eliminate some old coal-fired boilers with low efficiency and serious environmental pollution. In the design of combustion equipment and combustor structure, the technology of ignition, combustion, burnout and heat transfer of coal should be strengthened, including innovative grate and air distribution structure. The main task is to reduce the mechanical incomplete combustion loss. For example, to reduce the carbon content of ash and fly ash, it is necessary to optimize the design of arch, secondary air adjustment, grate design and air distribution uniformity.

Another way is to use clean combustion technology. Replace clean coal with clean coal to improve coal quality. Such as the development of gas boilers, vacuum hot water boilers, biomass boilers and other directions. In addition, the use of pulverized coal boilers has also become a priority for areas with suitable coal reserves.

For a long period of time in the future, coal-fired industrial boilers will still dominate the industrial production equipment in China. With the increasingly strict environmental protection requirements and the adjustment of the energy supply structure, the adoption of clean fuel consumption technology and clean fuel will become the mainstream of coal-fired industrial boiler renovation. New energy-efficient and environmentally friendly industrial boilers will become mainstream products to meet market demand.