The invention relates to an integrated process for assessing one or more properties of a catalyst. In the method, a standard chemical reactor or reactors is/are provided, and a bypass means is also provided, to transport a sample of whatever is added to the industrial reactor, to the test reactor. Both gases and liquids are transferred to the test reactor.

A process for preparing an olefin polymer, including the steps of forming a particulate olefin polymer in a gas-phase polymerization reactor in the presence of a C.sub.3-C.sub.5 alkane as polymerization diluent, separating discharged polyolefin particles from concomitantly discharged gas at a pressure from 1 to 2.2 MPa, degassing the polyolefin particles at a pressure from 0.1 to 0.4 MPa with a gas made from or containing a C.sub.3-C.sub.5 alkane; and transferring the separated gas and the gas from the degassing to a work-up unit operated at a pressure from 0.001 to 0.2 MPa below the pressure of the separation, wherein the gas for degassing is continuously received from the work-up unit.

System and methods for plasma treatment of a fluidized bed of particles are disclosed. The systems include an energy coupling zone configured to generate a plasma from microwave radiation and an interface element configured to propagate the plasma from the energy coupling zone to a reaction zone. The reaction zone is configured to receive the plasma, receive a plurality of reactant particles in a fluidization plane direction from a fluidization assembly positioned below the reaction zone, and form a product in presence of the plasma. The fluidization plane is substantially perpendicular to the propagated plasma.

The present disclosure relates to a device for directing a coking-prone liquid to a high temperature environment, where the device includes an inner tube positioned concentrically within an outer tube, creating a first annular space between an outer wall of the inner tube and an inner wall of the outer tube and a first intermediate tube positioned concentrically around the outer tube, creating a second annular space.

A method for testing catalysts in a fluidized bed reactor comprises enclosing catalyst material in capsules having pores or holes smaller than the catalyst material, inserting the capsules filled with catalyst material to into a port of the fluidized bed reactor and recovering at least a portion of the catalyst capsules from the fluidized bed reactor after use through an additional port of the fluidized bed reactor, wherein the capsules move with a flow of uplifted fluid and gas in the fluidized bed reactor.

A method of recovering an active metal of a lithium secondary battery according to an embodiment of the present invention includes preparing a waste cathode active material mixture obtained from a waste cathode of a lithium secondary battery, forming a preliminary precursor mixture by reacting the waste cathode active material mixture with a reactive gas in a fluidized bed reactor, and selectively recovering a lithium precursor from the preliminary precursor mixture. The fluidized bed reactor includes a reactor body and a horizontal expansion bed, and a ratio of a diameter of the horizontal expansion bed relative to a diameter of the reactor body is 3 or more to improve a recovery efficiency of a lithium secondary battery.

A fluidization measurement system for a gas phase reactor containing a fluidized bed includes a measurement probe coupled to a sidewall of the gas phase reactor. The measurement probe includes a support bar penetrating the sidewall and extending into the fluidized bed to a distance of at least 12% of a diameter of the gas phase reactor, and a plurality of sensors arranged along a length of the support bar to obtain measurements of at least one of temperature, pressure, and electrostatic charge at multiple points within the fluidized bed. A base plant control system is in communication with measurement probe to receive and process the measurements to determine real-time physical conditions and flow patterns of the fluidized bed.

A method and a device for preparing a carbon nanotube and a prepared carbon nanotube. The method includes: adding iron pentcarbonyl and nickel tetracarbonyl into a multi-stage series fluidized bed and performing decomposition to obtain a catalyst, and discharging the carbon monoxide generated; adding a carbon source and injecting an inert gas into the series fluidized bed for reaction under heating at 600-800° C. for 40-90 min, the ratio of the mass of carbon in the carbon source to the mass of the catalyst being 5-7:3-5. Further provided are a device for preparing a carbon nanotube according to the above method and a carbon nanotube prepared by the above method.

The present invention relates to a fluidized bed reactor comprising a reaction chamber for particulate matter, the reaction chamber having at least one particulate matter inlet (3) for the particulate matter and at least one primary particulate matter outlet for the particulate matter, and a fluidizing grate having multiple openings for an operating fluid to fluidize particulate matter above the fluidizing grate.

A process for the catalytic cracking of hydrocarbon oils includes the step of contacting a hydrocarbon oil feedstock with a catalytic cracking catalyst in a reactor having one or more fast fluidized reaction zones for reaction. At least one of the fast fluidized reaction zones of the reactor is a full dense-phase reaction zone, and the axial solid fraction ε of the catalyst is controlled within a range of about 0.1 to about 0.2 throughout the full dense-phase reaction zone. When used for catalytic cracking of hydrocarbon oils, particularly heavy feedstock oils, the process, reactor and system show a high contact efficiency between oil and catalyst, a selectivity of the catalytic reaction, an effectively reduced yield of dry gas and coke, and an improved yield of high value-added products such as ethylene and propylene.