CAJ | 학술논문

分析研究了不同粒径分布的石油焦成浆性及制备水焦浆的流变性和稳定性。结果表明，石油焦的成浆性较好，成浆浓度近70%，浆体的表观黏度均随浓度的增大而增大。粒径分布越宽，越有利于堆积，堆积效率越高，可制浆浓度越高，制备水焦浆的最佳药剂量越低，采用萘系分散剂制备的水焦浆呈胀塑性流型，粒径分布越宽，胀塑性越弱，利用静置观察法与Turbiscan Lab稳定性分析仪测定相结合评价水焦浆的稳定性，水焦浆的稳定性差，且粒径越大，析水率越低，沉降区的焦粉颗粒越易发生聚结，底部越易产生硬沉淀，稳定性越差。颗粒聚结是水焦浆稳定性的主要影响因素。
분석연구료불동립경분포적석유초성장성급제비수초장적류변성화은정성。결과표명，석유초적성장성교호，성장농도근70%，장체적표관점도균수농도적증대이증대。립경분포월관，월유리우퇴적，퇴적효솔월고，가제장농도월고，제비수초장적최가약제량월저，채용내계분산제제비적수초장정창소성류형，립경분포월관，창소성월약，이용정치관찰법여Turbiscan Lab은정성분석의측정상결합평개수초장적은정성，수초장적은정성차，차립경월대，석수솔월저，침강구적초분과립월역발생취결，저부월역산생경침정，은정성월차。과립취결시수초장은정성적주요영향인소。
The slurryability, rheological characteristics and stability of petroleum coke water slurry ( PCWS) with different particle size distribution were studied. The results show that the slurryability of petroleum coke was good, and the solid concentration was about 70%. The apparent viscosity of PCWS increases with the petroleum coke concentration increase. The PCWS with wider particle size distribution has the better close-packing and higher stacked efficiency, which results in the higher solid concentration with fewer dispersants. The PCWS behaves as a dilatant fluid with naphthalene series dispersant. The dilatability decreases with the wide distribution of particle size. The stability of PCWS is evaluated by using standing observation and Turbiscan Lab stability analyzer methods. When the particle size is larger, the stability of PCWS is worse, the drainage rate is lower, and the petroleum coke particle coalescence and hard sedimentation are easy formation. Particle coalescence is the main factor influencing the stability of PCWS.