Part of content about fluidized bed thermodynamic calculation in the 《 layer and fluidized combustion thermodynamic calculation standard for industrial boiler 》 ( jb / dq1060 - 83 ) are discussed the computing equation of fly ash carbon content and the thermal equilibrium equation in the dense phase considering evaporation of water of unburned coal are given . the revise necessary is provided through calculating examples 对jb / dq1060 - 83 《层状燃烧及沸腾燃烧工业锅炉热力计算标准》中沸腾炉热力计算的部分内容进行了探讨，导出了沸腾层飞灰含碳量计算式和考虑未燃煤水分蒸发的沸腾层热平衡方程，通过算例说明了修正的必要性。
Aimed at solving the problem that high content of unburned carbon is unfavourable for the comprehensive ultilization in scale of fly ash , the fundamental principle that separation of unburned carbon from fly ash is theoretically analyzed by wet flotation and dry electro - separation , three factors and two levels orthogonal test for flotation and two factors and three levels test for electro - separation were conducted , furthermore , the primary factors and law affecting separating efficiency in flotation and electro - separation were obtained . the results show that wet flotation can give 7 . 34 % of the cleaned coal yield rate , which contains 44 . 53 % of ash content and 56 . 02 % of separating efficiency , while dry electro - separation can reduce the content of carbon in separated fly ash to 3 . 16 % and remove 53 . 12 % of carbon from fly ash 针未燃炭含量过高不利对粉煤灰大规模综合利用的问题，从理论上分析了粉煤灰湿法浮选和干法电选分选未燃炭的基本原理，进行了三因素二水平正交浮选试验和二因素三水平的正交电选试验研究，得到了影响浮选和电选分选效果的主要因素及其规律.试验表明:采用湿法浮选法可获得精煤产率为7 . 34 % ，灰分为44 . 53 % ，分选效率为56 . 02 %的分选效果；采用干法电选，选后粉煤灰的含碳量可降到3 . 16 % ，脱碳率达53 . 12 %
In the text , there analyzes the process of the mixture air and fuel in the two stroke gasoline engine and bring forward the specific solution to the improvementsing gasoline engine the high - press direct in - cylinder injection . this technology sprays the feul into the cylinder after the outlet vavle closed and scavengs the engine cylinder with pure and fresh air , which avoid the fuel escapes unburned 本文分析了二冲程汽油机混合气形成过程，并提出了具体的改进方案，用缸内高压直接喷射技术进行改造。缸内高压直接喷射是在发动机排气口关闭后向气缸内喷射燃油，使用纯新鲜空气进行扫气，避免了燃油短路损失。
Great difference in pressure for two flow made pressure wave system and it help to extend the delay time for gas in chamber , which increases combustion effusion . second , to increase combustion effusion , the inlet temperature of air and gas should be enhanced in the range of heat releasing in chemical reaction . third , the first work condition is unburned absolutely and the second work condition is burnt in shear layer of inlet and the end of down wall zone in straight segment 对于压力差很大的两股气流,所形成的压缩波系的结构可以增加燃气驻留时间,提高燃烧稳定性;为了提高扩散燃烧的效率,在保证能放热的化学反应温度范围之内,应适当提高燃气及空气的来流入口温度;燃气喷嘴应居于燃烧室轴线上,是改进超音速燃烧室结构的一种思路。
Abstract : aimed at solving the problem that high content of unburned carbon is unfavourable for the comprehensive ultilization in scale of fly ash , the fundamental principle that separation of unburned carbon from fly ash is theoretically analyzed by wet flotation and dry electro - separation , three factors and two levels orthogonal test for flotation and two factors and three levels test for electro - separation were conducted , furthermore , the primary factors and law affecting separating efficiency in flotation and electro - separation were obtained . the results show that wet flotation can give 7 . 34 % of the cleaned coal yield rate , which contains 44 . 53 % of ash content and 56 . 02 % of separating efficiency , while dry electro - separation can reduce the content of carbon in separated fly ash to 3 . 16 % and remove 53 . 12 % of carbon from fly ash 文摘:针未燃炭含量过高不利对粉煤灰大规模综合利用的问题，从理论上分析了粉煤灰湿法浮选和干法电选分选未燃炭的基本原理，进行了三因素二水平正交浮选试验和二因素三水平的正交电选试验研究，得到了影响浮选和电选分选效果的主要因素及其规律.试验表明:采用湿法浮选法可获得精煤产率为7 . 34 % ，灰分为44 . 53 % ，分选效率为56 . 02 %的分选效果；采用干法电选，选后粉煤灰的含碳量可降到3 . 16 % ，脱碳率达53 . 12 %
A part of content about fluidized bed thermodynamic calculation in the 《 layer and fluidized combustion thermodynamic calculation standard for industrial boiler 》 ( jb / dq1060 - 83 ) are discussed the computing equation of fly ash carbon content and the thermal equilibrium equation in the dense phase considering evaporation of water of unburned coal are given . the revise necessary is provided through calculating examples 对jb / dq1060 - 83 《层状燃烧及沸腾燃烧工业锅炉热力计算标准》中沸腾炉热力计算的部分内容进行了探讨，导出了沸腾层飞灰含碳量计算式和考虑未燃煤水分蒸发的沸腾层热平衡方程，通过算例说明了修正的必要性。
