Ignition-assisting agents for densified corn stover briquette fuel(DCBF) were developed,and their ignition and emission characteristics were investigated using type LLA-6 household cooking stove.Three waste liquid fue...Ignition-assisting agents for densified corn stover briquette fuel(DCBF) were developed,and their ignition and emission characteristics were investigated using type LLA-6 household cooking stove.Three waste liquid fuels,waste engine oil(E) ,diesel oil(D) ,and industrial alcohol(A) ,were used as raw materials to make 25 ignitionassisting agents by mixing at different ratios.Their ignition performance was evaluated in terms of ignition time and cost.It was found that ignition-assisting agents ED15(a mix of E and D at volume ratio of 1︰5) and DA51(a mix of D and A at volume ratio of 5︰1) presented better ignition results with shorter ignition time(40-53 s) and lower cost(6.1 and 5.3 cents) at the dosages of 9 ml and 8 ml,respectively.The emission of O2,CO,CO2,NOx,and SO2,the temperature in fume gas,and combustion efficiency were investigated for ED15 and DA51.The results show that the emission of ED15 with the dosage of 9 ml is lower than that of DA51 with the dosage of 8 ml in the ignition process.ED15 at the dosage of 9 ml achieves satisfactory combustion efficiency and emits less pollutant,so it is recommended for practical application.The study will provide a cost-effective and environmentally friendly approach to fast ignite DCBF and break the barrier to the practical application of DCBF.展开更多
To solve the problem of the low ash fusion point of briquette, this paper reported that the ash fusibility temperatures can be elevated by changing ash ingredients through blending refractory agents in briquette ash, ...To solve the problem of the low ash fusion point of briquette, this paper reported that the ash fusibility temperatures can be elevated by changing ash ingredients through blending refractory agents in briquette ash, which will create favorable conditions for moving bed continuous gasification of briquette with oxygen-rich air. The effects of A1203, SiO2, kaolin, dry powder and bentonite on ash fusibility temperatures were studied, based upon the relationship between briquette ash components and ash fusibility. The results show that the increasing of ash fusibility temperatures by adding the same amount （11%, w） of refractory agents follows the sequence of SiO2, bentonite, dry powder, kaolin, A1203, with the softening temperatures being elevated by 37.2, 57.6, 60.4, 82.6 and 104.4℃. With the same ratio of SIO2/A1203 in briquette, adding the A1203 component is more effective than SiO2 for raising ash fusibility temperatures. In this paper, inexpensive kaolin and bentonite rich in A1203 are found to be better refractory agents, and the suitable adding quantities are 9% and 11%, respectively.展开更多
针对部分提质褐煤型煤防水性差的缺点,制备乳化硅油作为型煤的防水剂,在硅油乳液的制备过程中,最佳亲水亲油平衡值(HLB)为10.5,硅油与乳化剂的最佳质量比为4∶1,最佳乳化方式为转相乳化法。试验结果表明:乳化硅油作为防水剂可大幅度增...针对部分提质褐煤型煤防水性差的缺点,制备乳化硅油作为型煤的防水剂,在硅油乳液的制备过程中,最佳亲水亲油平衡值(HLB)为10.5,硅油与乳化剂的最佳质量比为4∶1,最佳乳化方式为转相乳化法。试验结果表明:乳化硅油作为防水剂可大幅度增强提质褐煤型煤的防水性,3种不同质量分数的硅油乳液(5%、10%、30%)分别可使原本不具有防水性的型煤60 m in的平均吸水率降至6.98%、5.51%和1.98%。展开更多
文摘Ignition-assisting agents for densified corn stover briquette fuel(DCBF) were developed,and their ignition and emission characteristics were investigated using type LLA-6 household cooking stove.Three waste liquid fuels,waste engine oil(E) ,diesel oil(D) ,and industrial alcohol(A) ,were used as raw materials to make 25 ignitionassisting agents by mixing at different ratios.Their ignition performance was evaluated in terms of ignition time and cost.It was found that ignition-assisting agents ED15(a mix of E and D at volume ratio of 1︰5) and DA51(a mix of D and A at volume ratio of 5︰1) presented better ignition results with shorter ignition time(40-53 s) and lower cost(6.1 and 5.3 cents) at the dosages of 9 ml and 8 ml,respectively.The emission of O2,CO,CO2,NOx,and SO2,the temperature in fume gas,and combustion efficiency were investigated for ED15 and DA51.The results show that the emission of ED15 with the dosage of 9 ml is lower than that of DA51 with the dosage of 8 ml in the ignition process.ED15 at the dosage of 9 ml achieves satisfactory combustion efficiency and emits less pollutant,so it is recommended for practical application.The study will provide a cost-effective and environmentally friendly approach to fast ignite DCBF and break the barrier to the practical application of DCBF.
文摘To solve the problem of the low ash fusion point of briquette, this paper reported that the ash fusibility temperatures can be elevated by changing ash ingredients through blending refractory agents in briquette ash, which will create favorable conditions for moving bed continuous gasification of briquette with oxygen-rich air. The effects of A1203, SiO2, kaolin, dry powder and bentonite on ash fusibility temperatures were studied, based upon the relationship between briquette ash components and ash fusibility. The results show that the increasing of ash fusibility temperatures by adding the same amount （11%, w） of refractory agents follows the sequence of SiO2, bentonite, dry powder, kaolin, A1203, with the softening temperatures being elevated by 37.2, 57.6, 60.4, 82.6 and 104.4℃. With the same ratio of SIO2/A1203 in briquette, adding the A1203 component is more effective than SiO2 for raising ash fusibility temperatures. In this paper, inexpensive kaolin and bentonite rich in A1203 are found to be better refractory agents, and the suitable adding quantities are 9% and 11%, respectively.
文摘针对部分提质褐煤型煤防水性差的缺点,制备乳化硅油作为型煤的防水剂,在硅油乳液的制备过程中,最佳亲水亲油平衡值(HLB)为10.5,硅油与乳化剂的最佳质量比为4∶1,最佳乳化方式为转相乳化法。试验结果表明:乳化硅油作为防水剂可大幅度增强提质褐煤型煤的防水性,3种不同质量分数的硅油乳液(5%、10%、30%)分别可使原本不具有防水性的型煤60 m in的平均吸水率降至6.98%、5.51%和1.98%。
