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利用焦化工艺处理废塑料技术研究 Ⅱ. 200 kg焦炉中试试验   总被引:5,自引:0,他引:5  
利用200 kg焦炉考察两种废塑料(PS和WMP)与首钢炼焦配煤按不同比例均匀混合共焦化所得焦炭的质量变化规律,以期能为焦化工艺处理废塑料技术的工业应用提供基础数据。研究表明:废塑料与煤共焦化所得焦炭冶金焦率和焦炭质量降低明显,且随着废塑料添加比例增加,所得焦炭质量劣化程度整体加大;与添加同比例的PS相比,添加WMP虽得到较差的冶金焦率,但所得焦炭的转鼓强度(M40和M10)和反应后强度(CSR)均优于添加PS的情形;废塑料与炼焦配煤简单混合共焦化,严重影响焦炭质量,不能应用于工业实践。  相似文献   
2.
高温空气燃烧炉内耦合传热的数值模拟   总被引:6,自引:1,他引:5  
用自行开发的三维湍流流动、燃烧、辐射传热和NOx湍流生成的计算程序,用离散坐标方法(DOM)模拟炉内的辐射传热并与其它传热方式相耦合,与各个输运方程共同求解,对燃烧室内的温度场进行了数值模拟.通过改变高温空气的预热温度,数值分析了高温空气燃烧炉内采用燃气直接喷射技术(FDI)的温度分布特性,检验了所采用的耦合数值模拟技术的有效性.模拟计算结果表明,提高空气预热温度,炉内温度的峰值相应增大,温度梯度降低,温度分布更均匀,火焰更长.相关的实验结果与数值预报的结果对比表明了相一致的规律.  相似文献   
3.
蔡九菊  肖松  王若翚  刘飞 《中国物理 B》2009,18(12):5097-5102
This paper uses various mean-field approaches and the Monte Carlo simulation to calculate asymmetric simple exclusion processes with particles of arbitrary size in the successive defects system.In this system,the hopping probability p (p < 1) and the size d of particles are not constant.Through theoretical calculation and computer simulation,it obtains the exact theoretical results and finds that the theoretical results are in agreement with the computer simulation.These results are helpful in analysing the effect of traffic with different hopping probabilities p and sizes d of particle.  相似文献   
4.
利用热天平和10 g固定床反应器分别考察了北京市生活垃圾中的废塑料与首钢炼焦配煤的热失重特性及热解产物分布规律。实验研究表明,首钢炼焦配煤主要热分解温度区域为300 ℃~750 ℃,北京市废塑料主要热分解温度区域为300 ℃~550 ℃,二者在相互重叠的失重温度区间产生“协同效应”,且在一定配比范围内,共热解产物出现 “增油减水”现象。首次提出了协同效应强度的概念及其计算式: 和 ,并得出废塑料的添加量为1%时,协同效应强度最大。  相似文献   
5.
肖松  蔡九菊  刘飞 《中国物理 B》2009,18(11):4613-4621
In this paper we use theoretical analysis and extensive simulations to study zone inhomogeneity with the random asymmetric simple exclusion process (ASEP).In the inhomogeneous zone,the hopping probability is less than 1.Two typical lattice geometries are investigated here.In case A,the lattice includes two equal segments.The hopping probability in the left segment is equal to 1,and in the right segment it is equal to p,which is less than 1.In case B,there are three equal segments in the system;the hopping probabilities in the left and right segments are equal to 1,and in the middle segment it is equal to p,which is less than 1.Through theoretical analysis,we can discover the effect on these systems when p is changed.  相似文献   
6.
肖松  蔡九菊  王瑞利  刘明哲  刘飞 《中国物理 B》2009,18(12):5103-5110
In this paper,we study the dynamics of the synchronous totally asymmetric simple exclusion process (TASEP) on lattices with two consecutive junctions in a multiple-input-multiple-output (MIMO) traffic system,which consists of m sub-chains for the input and the output,respectively.In the middle of the system,there are n (n < m) sub-chains via two consecutive junctions linking m sub-chains of input and m sub-chains of output,respectively.This configuration is a type of complex geometry that is relevant to many biological processes as well as to vehicular traffic flow.We use a mean-field approach to calculate this typical geometry and obtain the theoretical results for stationary particle currents,density profiles,and a phase diagram.With the values of m and n synchronously increasing,the vertical phase boundary moves toward the right and the horizontal phase boundary moves toward the upside in the phase diagram.The boundary conditions of the system as well as the numbers of input and output determine the no-equilibrium stationary states,stationary-states phases,and phase boundaries.We use the results to compare with computer simulations and find that they are in very good agreement with each other.  相似文献   
7.
垃圾混煤热解特性的实验研究   总被引:2,自引:0,他引:2  
以固定床热解反应器为背景,研究掺煤量和加热速率对垃圾混煤物料热解特性的影响,实验结果表明:提高加热速率可以有效缩短热解时间,增加掺煤量可以改变反应床结构,提高料层传热速率,缩短热解时间;在19.6 kW供热条件下,掺煤100 g和掺煤200 g热解时间分别为110 min和99 min;气体产率分别为25.6%和28.1%,气体热值分别为18255 kJ/m3和19830 kJ/m3。  相似文献   
8.
肖松  蔡九菊  刘飞  刘明哲 《中国物理 B》2010,19(9):90202-090202
In this paper, the effects of unequal injection rates and different hopping rates on the asymmetric simple exclusion process (ASEP) with a 2-input 1-output junction are studied by using a simple mean-field approach and extensive computer simulations. The steady-state particle currents, the density profiles, and the phase diagrams are obtained. It is shown that with unequal injection rates and different hopping rates, the phase diagram structure is qualitatively changed. The theoretical calculations are in good agreement with Monte Carlo simulations.  相似文献   
9.
高温空气燃烧炉内湍流混合特性的数值研究   总被引:2,自引:0,他引:2  
应用自行研发的三维流动、燃烧、传热和污染物NO,湍流生成的数值模拟程序,对高温空气燃烧实验模型炉进行了湍流扩散燃烧混合特性的数值模拟.数值预报了燃烧室内气体燃料和空气的混合物分数及其湍流脉动的三维分布.数值研究结果表明:在一定的几何条件和气体动力学条件下,高温空气燃烧的湍流混合在更广泛的区域内以较小梯度的进行;混合物分数的脉动主要分布在燃烧区,这表明高温空气燃烧的火焰厚度更大,具有燃烧释热更趋均匀的特性.数值模拟结果与相关的实验结果有相同的规律.  相似文献   
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