Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Reactor fluidized

Fig. 4. Multiphase fluid and fluid—solids reactors (a) bubble column, (b) spray column, (c) slurry reactor and auxiUaries, (d) fluidization unit, (e) gas—bquid—sobd fluidized reactor, (f) rotary kiln, and (g) traveling grate or belt drier. Fig. 4. Multiphase fluid and fluid—solids reactors (a) bubble column, (b) spray column, (c) slurry reactor and auxiUaries, (d) fluidization unit, (e) gas—bquid—sobd fluidized reactor, (f) rotary kiln, and (g) traveling grate or belt drier.
In the second class, the particles are suspended in the liquid phase. Momentum may be transferred to the particles in different ways, and it is possible to distinguish between bubble-column slurry reactors (in which particles are suspended by bubble movement), stirred-slurry reactors (in which particles are suspended by bubble movement and mechanical stirring), and gas-liquid fluidized reactors (in which particles are suspended by bubble movement and cocurrent liquid flow). [Pg.72]

All these gas-liquid-particle operations are of industrial interest. For example, desulfurization of liquid petroleum fractions by catalytic hydrogenation is carried out, on the industrial scale, in trickle-flow reactors, in bubble-column slurry reactors, and in gas-liquid fluidized reactors. [Pg.72]

Catalytic desulfurization is at present carried out industrially by at least three of the major types of gas-liquid-particle operations referred to in Section I trickle reactors, bubble-column slurry reactors, and gas-liquid fluidized reactors. [Pg.75]

Van Driesen and Stewart (V4) have reported temperature measurements for various locations in commercial gas-liquid fluidized reactors for the large-scale catalytic desulfurization and hydrocracking of heavy petroleum fractions (2500 barrels per day capacity). The hydrogenation was carried out in two stages the maximum and minimum temperatures measured were 774° and 778°F for the first stage and 768° and 770°F for the second. These results indicate that gas-liquid fluidized reactors are characterized by a high effective thermal conductivity. [Pg.129]

CO2 capture characteristics of dry sorbents in a fast fluidized reactor... [Pg.501]

One of the advanced concepts for capturing CO2 is an absorption process that utilizes dry regenerable sorbents. Pure sodium bicarbonate from Dongyang Chemical Company and spray-dried sorbents were used to examine the characteristics of CO2 reaction in a flue gas environment. The chemical characteristics were investigated in a fast fluidized reactor of 0.025 m i.d., and the effects of several variables on sorbent activity, including gas velocity (1.5 to 3.5 m/s), temperature (40 to 70 °C), and solid concentration (15 to 25 kg/m /s)], were examined in a fast fluidized-bed. Spray-dried Sorb NX30 showed fast kinetics in the fluidized reactor. [Pg.501]

The fluidized reactor can be a bubbling fluidized type or a fast fluidized type, depending on the gas velocity and the reactivity of the sorbents. We adopted a fast fluidized bed type reactor for carbonation and regeneration reactions in order to identify the chemical characteristics of sorbents in a fast fluidized reactor of 0.025 m i.d. [Pg.502]

The reactivities of pure NaHCOa solid. Sorb NHR, NHR5, and NX30 sorbents were examined in a fast fluidized bed reactor. The CO2 removal of the pure NaHCOa solid increased from 3 % to 25 % when the variables were altered. Removal increased as gas velocity was decreased, as the carbonation temperature was decreased, or as the solid circulation rate was increased. The CO2 removal of Sorb NHR and NHR5 was initially maintained at 100 % for a short period of time but quickly dropped to a 10 to 20 % removal. However, the Sorb NX30 sorbent showed fast kinetics in the fast fluidized reactor, capturing all of the 10 % of the CO2 in the flue gas within 3 seconds in the fast fluidized reactor. [Pg.504]

Application of fluidized reactor in photocatalytic decomposition of gaseous acetic acid and ammonia... [Pg.561]

In this section, representative results are reviewed to provide a prospective of reactor modeling techniques which deal with bed size. There probably is additional unpublished proprietary material in this area. Early studies of fluidized reactors recognized the influence of bed diameter on conversion due to less efficient gas-solid contacting. Experimental studies were used to predict reactor performance. Frye et al. (1958) used... [Pg.4]

Phthalic anhydride Naphthalene is oxidized by air to phthalic anhydride in a bubbling fluidized reactor. Even though the naphthalene feed is in liquid form, the reaction is highly exothermic. Temperature control is achieved by removing heat through vertical tubes in the bed to raise steam [Graham and Way, Chem. Eng. Prog. 58 96 (January 1962)]. [Pg.17]

Chapter 20 Reactors with Suspended Solid Catalyst, Fluidized Reactors of Various Types /447... [Pg.367]

Chapter 20 Fluidized Reactors of Various Types and its special cases... [Pg.464]

Solids of unchanging size, R = 0.3 mm, are reacted with gas in a steady flow bench scale fluidized reactor with the following result. [Pg.606]


See other pages where Reactor fluidized is mentioned: [Pg.296]    [Pg.519]    [Pg.528]    [Pg.2097]    [Pg.483]    [Pg.75]    [Pg.417]    [Pg.502]    [Pg.504]    [Pg.562]    [Pg.437]    [Pg.581]    [Pg.635]    [Pg.233]    [Pg.429]    [Pg.448]    [Pg.450]    [Pg.452]    [Pg.454]    [Pg.456]    [Pg.458]    [Pg.460]    [Pg.462]    [Pg.466]    [Pg.468]    [Pg.470]    [Pg.472]    [Pg.680]   
See also in sourсe #XX -- [ Pg.458 ]




SEARCH



A Simple Model for the Bubbling Fluidized Bed Reactor

Ammonia oxidation, reactor fluidized

Anaerobic fluidized bed reactor

Assisted Fluidized Bed Reactors

Biparticle fluidized bed reactor

Bubbling fluidized bed reactor

Catalytic cracking reactors fluidized bed

Circulating fluidized bed reactor

Circulating fluidized beds reactor applications

Continuous fluidized bed reactor

Continuous fluidized bed reactor process

Dense-phase fluidized beds reactor applications

Design of Fluidized Bed Catalytic Reactors

Entrained solids fluidized reactor

FLUIDIZED AND FIXED BED REACTORS

FLUIDIZED-BED AND OTHER MOVING-PARTICLE REACTORS FOR FLUID-SOLID REACTIONS

FLUIDIZED-BED CATALYTIC MEMBRANE TUBULAR REACTORS

Fast fluidized bed reactors

Fixed, fluidized-bed reactor

Fluidization reactor model

Fluidization transport reactor

Fluidized Bed Catalytic Reactor with Consecutive Reactions

Fluidized Bed Reactor Models Considering Detailed Flow

Fluidized Gas-Liquid-Solid Reactors

Fluidized bed catalytic membrane reactor

Fluidized bed membrane reactor

Fluidized bed membrane reactors FBMRs)

Fluidized bed reactor for

Fluidized bed reactor modeling

Fluidized bed reactor models

Fluidized bed reactor processes

Fluidized bed reactor scale

Fluidized bed reactors

Fluidized bed reactors control

Fluidized bed reactors ebullating beds

Fluidized bed reactors mechanism

Fluidized bed reactors multistage

Fluidized bed reactors operating data

Fluidized bed reactors regenerator

Fluidized bed reactors, reaction

Fluidized beds multiphase reactors

Fluidized catalyst beds reactor models

Fluidized catalytic cracking , riser-type reactors

Fluidized catalytic reactors

Fluidized continuous-stirred tank reactors

Fluidized reactor characteristics

Fluidized reactors conversion equation

Fluidized reactors example

Fluidized suspension reactors

Fluidized-bed biofilm reactors

Fluidized-bed reactors design

Gas Flow in a Fluidized Bed Reactor

Gas fluidized reactors

Gas-fluidized-bed reactor

Gas-phase, fluidized bed reactor

Gas-solid fluidized bed reactors

Heat transfer, reactors fluidized beds

Heterogeneous Fluidized Bed Catalytic Reactors

Industrial catalytic processes employing fluidized-bed reactors

Industrial fluidized bed reactors

Interconnected Fluidized Bed Reactors

Liquid fluidized bed reactor

Membrane assisted fluidized bed reactor

Milestones in Fluidized Bed Reactor Technology

Modeling of Fluidized Bed Membrane . Reactors

Modeling of Fluidized Bed Reactors

Reactor engineering, fluidized

Reactor engineering, fluidized reactors

Reactors three-phase fluidized bed

Reactors, chemical fluidized bed

Recycle fluidized batch reactor

Scaling fluidized-bed reactors

Ten Lump Reaction Scheme 2 Fluidized Bed Reactor. Reynolds-Averaged

Three-phase slurry reactors fluidized beds

Two-phase fluidized bed reactors

© 2024 chempedia.info