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燃煤 远红外电热风炉生物质节能环保改造可行性分析

更新时间:2021-05-10 09:26:03
小编叙述:对于远红外电热风炉的理解:
远红外电热风炉“target=”\ublank“href=”http://www.yzxide.cn/product/product41.html “class=”seolabel“style=”颜色:rgb(28、87、196);文字装饰线:无;“>燃煤 远红外电热风炉In the process of using coal-fired hot blast stove, SO2, smoke and other pollutants from Chengdu people's company are produced, which cause great pollution to the atmospheric environment. In order to strengthen the comprehensive improvement of atmospheric environment, many cities have gradually eliminated or reformed small coal-fired hot air stoves (burning clean fuel instead). The transformation of small and medium-sized coal-fired hot stoves into biomass briquette fuel hot stoves in Chengdu Qianren company can effectively reduce the emissions of SO2 and soot on the one hand, avoid the economic burden brought by switching to oil (gas) hot stoves on the other hand, and promote the development of renewable energy, realize the comprehensive utilization of agricultural and forestry organic wastes, and promote the sustainable development of agriculture Optimizing the energy structure plays an important role< br/>China has a large number of living and industrial coal-fired hot blast furnace, the use of coal-fired hot air furnace SO2, smoke and other pollutants, causing great pollution to the atmosphere. In order to strengthen the comprehensive improvement of the atmospheric environment, many cities have gradually eliminated or reformed small coal-fired hot blast stoves (converted to clean fuel). On the one hand, it can effectively reduce the emission of SO2 and smoke, and on the other hand, it can avoid the economic burden of using the fuel (gas) hot blast stove on the one hand, And promote the development of renewable energy and the comprehensive utilization of organic waste in agriculture and forestry. The structure of the chemical energy has an important role (1) characteristics of biomass briquette fuel < br / > two. Analysis of air pollutants emission from hot blast stop refit < br / > (1) characteristics of biomass briquette fuel < br / > biomass briquette fuel uses crop residues (straw, rice husk, etc.) and forestry residues (cutting and processing residues, dead branches, etc.) as raw materials, The fuel is compressed into rod, block or particle by special equipment under specific process conditions< br/>Biomass briquette is the use of crop residues (straw, rice husk, etc.), forestry remainder (cutting remainder, withered branch, etc.) as raw materials, and compressed into rod like, Biomass or granular fuel through special equipment. < br / > comparing the main characteristics of biomass briquette fuel with general industrial coal, it can be seen that the calorific value of biomass briquette fuel is slightly lower than that of coal, and 1 ton of biomass briquette fuel is equivalent to the calorific value of 0.73-0.97 ton of coal; The sulfur content of biomass briquette is much lower than that of coal, and the sulfur content of nitrogen and ash is slightly lower than that of coal. The SO2 produced during combustion is greatly reduced, while NOx and smoke are less< br/>The comparison of the main characteristics of the biomass briquette and the general industrial coal can be seen that the calorific value of the biomass plow fuel is slightly lower than that of the coal, and the 1 ton biomass briquette is equivalent to the calorific value of 0.73 to 0.97 tons of coal; the sulfur content of the biomass briquette is much lower than that of the coal, and the sulfur content of the nitrogen and ash is slightly lower than that of the coal, and the SO2 produced during the combustion is large. Large reduction, (2) transformation of air pollutants by hot air furnace < br / > (2) transformation of air pollutants by hot air furnace < br / > taking a 1 T / h coal-fired hot stove transformed into biomass briquette fuel Chengdu Qianren company as an example, the theoretical calculation formula of air pollutants emission in flue gas of Chengdu company in "Environmental Statistics Manual" is adopted, The emission of air pollutants in the flue gas before and after the transformation of the hot blast stove is predicted, and the average value of the fuel characteristics is calculated. The results of the transformation of a 0.8t/h coal-fired hot blast stove into a biomass briquette hot blast stove by Henan environmental monitoring center station are referred, Monitoring results of air pollutant concentration of hot blast stove flue gas after wet spray dust removal< br/>Taking 1 1t/h coal-fired hot blast furnaces to transform into a biomass briquette hot blast stove as an example, using the theoretical calculation formula of air pollutant emission from the flue gas of the hot blast stove in the "Environmental Statistics Manual", the emission of air pollutants in the flue gas before and after the hot blast furnace is predicted respectively. The mean value was calculated, and the results of air pollutant concentration monitoring after a 0.8t/h coal fired hot blast stove was transformed into a biomass briquette hot blast stove in Henan Province, And the air pollutant concentration was monitored after the wet spray dust removal. < br / > the comparison of the prediction results before and after the transformation of the hot blast stove shows that under the same working output of the hot blast stove, the SO2 and soot produced by burning biomass briquette fuel after the transformation are reduced to a certain extent, and the SO2 production and concentration are reduced by 93% and 94% respectively, The generation and concentration of soot decreased by 29% and 42% respectively; NOx pollution is similar to that before modification. It can be seen from the prediction results and monitoring results after the transformation of the hot blast stove that the SO2 concentration after the transformation of the hot blast stove burning biomass briquette fuel is much lower than the maximum allowable emission concentration in the second period of "emission standard of air pollutants for hot blast stove" (gb13271-2001)< br/>The comparison of the prediction results before and after the remolding of the hot blast stove shows that when the hot blast stove reaches the same working force, the SO2 and dust produced by the biomass briquette fuel are reduced to a certain extent, the production and concentration of SO2 are reduced by 93% and 94% respectively, and the production and concentration of smoke and dust are reduced by 29, respectively. % and 42%, and NOx pollution is not quite different from that before the transformation. The prediction results and monitoring results after the remolding of the hot blast stove show that the SO2 concentration is much lower than the maximum permissible concentration in the period of the air pollutant discharge standard (GB13271 - 2001) II of the hot blast s After the removal of the hot blast stop. It can meet the emission standard< The concentration of smoke and duct exceeded 4.86 times, and the duct removed rate reached more than 83% after we spring. The discharge standard can be achieved. < br / > 3. Technical analysis of hot blast furnace transformation < br / > 3. If the coal-fired hot blast stove in operation is not reformed and directly uses biomass briquette fuel, the hot blast stove is prone to small and stable output, black smoke, dust and stack pollution< br/>The biomass briquette is compressed. High density, slow volatilization spillover speed, water content people, if the current operation of coal-fired hot blast furnace without modification directly use biomass briquette fuel, hot blast stove is easy to appear power and small stability, easy to take black smoke, powder, By reforming the combustion chamber and the auxiliary air supply system of the coal-fired hot blast stove, the forced mechanical ventilation mode is mainly adopted, the air distribution chamber is added at the lower part of the hot blast stove, the secondary air supply of the furnace is increased, and the thickness of the fuel layer in the feed hopper is adjusted, so as to solve the above problems and meet the full combustion of the briquette fuel. The test shows that the same output can be achieved after the coal-fired hot blast stove is transformed into biomass briquette hot blast stove, and the thermal efficiency of hot blast stove is more than 58%< br/>By reforming the combustion chamber and auxiliary air supply system of the coal-fired hot stove, it is mainly to adopt the forced mechanical ventilation, increase the air distribution room in the lower part of the hot blast stove, increase the two air supply of the furnace, and adjust the thickness of the fuel layer of the hopper, So as to solve the bad omenon and satisfaction the full combination of the material of the material of the cow. The test results show that the same output can be achieved after the coal fired hot blast stop is transformed into a biomass brief hot blast stop, and the thermal efficiency of the hot blast stop is over 58%. < br / > 4 Economic analysis of hot blast furnace transformation < br / > four. Economic analysis of hot blast furnace transformation < br / > the operation economy of hot blast furnace under the condition of achieving the same force mainly depends on the calorific value and price of fuel and the thermal efficiency of hot blast furnace; Diesel gt; Biomass fuel gt; Coal. Although the operating cost of hot blast stove burning biomass briquette fuel is slightly higher than that of coal, considering that the SO2 produced by burning biomass fuel is greatly reduced, the cost of flue gas desulfurization can be reduced; On the other hand, coal, diesel, natural gas and other fossil energy with the continuous growth of demand, as well as the gradual decline of large-scale mining, will inevitably lead to rising prices, will bring a certain economic burden. Comprehensive comparison of coal-fired stove into biomass briquette fuel stove in the economy has a certain competitive advantage< br/>The economy of the hot air furnace running with the same force depends mainly on the calorific value of the fuel, the price and the heat efficiency of the hot air furnace. The comparison of the running cost of the hot blast stove with the fuel of biomass briquette, coal, diesel and natural gas can be compared with the natural gas gt; diesel gt; biomass fuel gt; coal. Although the cost of burning biomass fuel is slightly higher than that of coal, it is necessary to reduce the cost of FGD by taking into account that the SO2 produced by biomass fuel can be reduced greatly. On the other hand, fossil fuels such as coal, The economic burden will be seen about by the rising prices. Comprehensive comparison of coal fired hot stop into biomass briquette stop has a certain economic competitive advantage. < br / > v Development prospects and existing problems of biomass briquette fuel; The amount of forestry residues available is 800-1 billion tons, about 300 million tons can be used as energy. It can be compressed into biomass briquette fuel, which can be converted into 372 million tons of standard coal, so as to realize the comprehensive utilization of agricultural and forestry organic wastes. It has certain social and economic benefits. At the same time, promoting the development of renewable energy plays an important role in easing the energy shortage and optimizing the energy structure, with great resource potential and good development prospects< br/>The collection of crop straw in China is 6.87 b
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