Development and preparation of reactor bed fouling inhibitor for hydrotreating unit

Causes of pressure drop increasing too fast in hydrocracker beds with sour feedstock being processed, more severe equipment corrosion and impurity content increase in product were analyzed.

At a specific layer of a jig bed, its parameters as bulk density, true density, ash content, and density fractions bear a certain relationship.

The paper put forward a detection method of porosity of jig bed through analyzing slicing process of jig bed and introduced design of fuzzy control system of jigger s air valve and its implementation method based on the detection method.

In order to study the effects of the random movement and hitting of particles on the heat transfer in a gas-solid fluidized bed of big particles,th e heat transfer characteristics between the heating surface and the bed layer in a pulsed fluidized bed are studied experimentally.

81-9 type CFB boiler have been analysed by using SPSS software,obtaining the relational expression of oil-gun output,air flow rate,and bed pressure affecting the temperature rise rate of bed layer,as well as the relational expresion between the particle size of bed materials and the starting-up time.

There is a problem of pressure drop rising during coker gasoline hydrorefining in the catalyst beds of unit1-B of SINOPEC Guangzhou Company.

The influence of the stirrer speed and the blade shape on the fluidization in the stirred gas-solid fluidized beds was experimentally studied by examining the relationship between the pressure drop and superficial gas velocity.

The pressure drop and two dimensional temperature profiles of a new hollow cylindrical vinyl acetate synthesis catalyst were measured in packed bed, and active ingredients were maldistributed on the inner and outside surface of this hollow cylinder.

The plots of bed pressure drop of fluidized bed were established and then the effects of feed rate,temperature of entering drying air,flow rate of entering drying air,and diameter of inert particles on the heat transfer performance of the(drier) were studied in detail.

In an aerated spouted bed with a draft tube made of polymethylmethacrylate with internal diameter 92 mm, the glass beads used as experimental material, under the different aerating velocity, aerating position, punching rate, the bed pressure drop and particles down moving rate in the annulus were studied.

With the floater of power plant as the bed material to conduet cold state modelling experiment under the steady operation condition of furnace,the systematic study included:the relation of fluidized air velocity,bed pressure drop and height of bed material of bottom ash cooler;the effects of ash inl.