gas boiler for sugar
The third reason is that the amount of nitrogen oxide released during operation is very small. Most heating equipment such as ordinary boiler for sugars need to use coal materials as raw materials when they are in operation. Materials such as coal generally release a large amount of hazardous air-quality substances when burned. The condensing boiler uses the steam produced by natural gas combustion as the raw material when it is in operation, so the nitrogen oxide content released during the operation is much lower than the prescribed standard. The analysis of the reason for the year-by-year increase in the sales of condensing boilers has come to an end for the time being.
Four combustion modes of boiler for sugarBoiler as an energy conversion equipment, plays a very important role in industrial production, can be said to be the core main force of production enterprises. I know the boiler, but it is estimated that most people do not know much about the combustion mode of the boiler. Today, our Fangkuai Boiler will take you to understand the four combustion modes of the boiler. It can be divided into suspended combustion, boiling combustion, layered combustion and gasification combustion. The following is one by one. First, suspension combustion, also known as fire chamber combustion, is a combustion mode in which fuel is injected into the furnace with air in the form of fog, powder or gas. Suspension combustion ignition is rapid, combustion heat The efficiency is high. It is easy to realize automatic operation. The adaptability to load variation is strong. And the adaptability to the fuel is also strong. However, this combustion mode requires a high level of operation, and should not run intermittently. Secondly, boiling combustion is a kind of fluidized boiling combustion of fuel in fluidized bed under the action of appropriate velocity of air. Boiling combustion is suitable for all kinds of coal, especially inferior coal, such as coal gangue. Stone coal, and so on, this combustion mode on the size of coal particles also have certain requirements. The coal mass must be processed and broken into particles with an average diameter less than 10mm during combustion. Delivered by coal-feeding equipment Enter the furnace. Third, layered combustion, also known as fire bed combustion, is a way of burning fuel in a certain thickness on the grate. This combustion mode is only suitable for solid fuels. However, there are certain requirements for particle size (6~50mm). Layered combustion can basically adapt to solid fuel. As long as the mixture of air and fuel layer is good, and there is a certain combustion temperature, the ideal combustion can be achieved. If the air and fuel layer do not mix well, or the local air supply is insufficient, the combustion will be incomplete and the combustion efficiency will be low. This type of combustion is generally used in chain furnaces. IV. Gasification combustion Gasification combustion mainly refers to gasification and direct combustion of coal put into furnace, and this combustion mode is not suitable for coal with low ash content. High-temperature gasification and staged combustion is different from ordinary gasification combustion. Its utilization principle is as follows: under the condition of oxygen, the fuel surface is heated with high-temperature heat source above 800 ℃, so that the fuel can be rapidly pyrolysis and gasification combustion from outside to inside. Part of the high temperature produced by combustion is then gasified at high temperature, and part of the fuel is discharged for work, thus forming a continuous high temperature gasification combustion reaction.
5. The local site environment protection standard
For natural gas fired boiler, if it has requirements about NOx emission , for biomass boiler , the particular emission is very important , if local is strict with the dust emission ,as 30mg/nm3 ,maybe the boiler system will need bag filter , the price will enlarge .
Hebei province is the use of industrial boiler for sugars, countless large and small boilers, air pollution caused by coal-fired boiler is one of the problems of governance in Hebei Province, and therefore become a major coal-fired boiler control of air pollution in Hebei Province direction. Coal-fired auxiliary boiler control work steadily, the Hebei provincial government to develop a "" comprehensive management of air pollution in Hebei provincial financial assistance fund management approach ", the boiler subsidy detailed as follows:
1, rural areas electricity instead of coal subsidies
The household equipment purchase and install (including line transformation indoor) 85% of investment subsidies, the maximum subsidy per household amount not more than 7400 yuan, the provincial and city and county respectively 50%, the rest borne by the users themselves.
Residents give electricity for heating 0.2 yuan / kwh subsidies, provincial, city and county average bear, the highest household electricity 10,000 kwh subsidies, subsidies and standards tentatively scheduled for three years.
2, substitution of gas for coal in rural areas subsidy standards
The household gas equipment purchase and install the 70% investment subsidies, the maximum subsidy per household amount not more than 2700 yuan. Provincial cities and counties and respectively 50%, the rest borne by the user.
Heating gas for customers who use 1 yuan / cubic meter of subsidy per household per year up to 1200 m3 gas subsidies, provincial, city and county average bear, subsidies and standards tentative three years.
Given the highest building in the village of pipelines family home investment subsidies of 4,000 yuan, 1000 yuan assume the provincial, city and county to bear 3,000.
3, coal-fired boiler subsidy governance standards
Subsidies for coal-fired boilers, eliminate subsidies, a separate ban demolition of 30,000 yuan / tons of steam, the implementation of clean energy transformation of 80,000 yuan / tons of steam.
4, thermal power shutting down out of subsidies
Provincial for shutting down the unit by 300 yuan / kilowatt award given up, have been included in the national "Thirteen Five." Plan for shutting down the unit, illegal construction unit, run-of-life choice except unit and power capacity index trading.