Slurry characteristics and mechanism analysis of petroleum coke–coal water slurry

Abstract

Petroleum coke-coal slurry (PCCS) was prepared by blending sub-bituminous coal with petroleum coke in different proportions. The rheology and stability of PCCS were studied, and the mechanism of dispersion and stability was analyzed. Results show that with the increase of the mass ratio of petroleum coke to Shenhua coal (α) in PCCS, the apparent viscosity of the slurry gradually increases, and the stability of the slurry decreases. Moreover, the contact angle also increases, indicating that the surface hydrophobicity was increased. When the α is 3:7, the fixed viscosity concentration of PCCS is above 60%, the fixed viscosity flow characteristic index is below 0.9, and the fixed segregation water rate is below 5%. Blending petroleum coke with Shenhua coal takes advantage of the complementary properties of the two materials and obtains PCCS with high concentration and improved stability.

Properties of direct coal liquefaction residue water slurry: Effect of mineral matters by acid‐leaching demineralization

“…Once the slurry is fed into the transportation and atomization process, a good rheological behavior is the assurance factor for the stability of the entire system 47 . Hence, the necessity for investigating the rheological behavior of slurries is pretty obvious.…”

“…Once the slurry is fed into the transportation and atomization process, a good rheological behavior is the assurance factor for the stability of the entire system. 47 Hence, the necessity for investigating the rheological behavior of slurries is pretty obvious. Figure 7 illustrates the rheological curves of the slurries, and the curve fitting was done with the Herschel-Bulkley model (Function 1) as follows 11,12 :…”

Purification of fluid catalytic cracking slurry oil at room temperature using ceramic membrane

“…The viscous slurry oil will pollute the surface of membrane and the flux is hard to recover to original value after the removal of the pollutant from the membrane surface. For keeping the equipment in a good work order, the surface of ceramic membrane need to be cleaned repeatedly or the membrane component is replaced, which significantly increases the cost [19][20][21][22][23][24]. Adding water and surfactant into the slurry oil to make the lower viscosity emulsion is another way to increase the fluidity of slurry oil.…”