Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
  • B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
  • B01J19/24—Stationary reactors without moving elements inside
  • B01J19/2415—Tubular reactors
  • B01J19/2425—Tubular reactors in parallel
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
  • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
  • B01J8/0292—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds with stationary packing material in the bed, e.g. bricks, wire rings, baffles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
  • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
  • B01J8/06—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes
  • B01J8/065—Feeding reactive fluids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
  • B01J2208/00008—Controlling the process
  • B01J2208/00017—Controlling the temperature
  • B01J2208/00106—Controlling the temperature by indirect heat exchange
  • B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
  • B01J2208/00176—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles outside the reactor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
  • B01J2208/00008—Controlling the process
  • B01J2208/00017—Controlling the temperature
  • B01J2208/00106—Controlling the temperature by indirect heat exchange
  • B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
  • B01J2208/00212—Plates; Jackets; Cylinders
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
  • B01J2219/00049—Controlling or regulating processes
  • B01J2219/00051—Controlling the temperature
  • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
  • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
  • B01J2219/00094—Jackets

Definitions

• the subject of the present invention comprises a device for conditions of chemical technologies and a way of its application.
• a reactor of the airlift type with external loop has been known
• This device is made of steel with basalt walls
• the gaseous reagents are dispersed in the liquid bulk by means of plate spargers with circular openings
• the internal circulation is given by introduction of compressed gas, and it's impossible to either calculate or measure it accurately and alter it in a suitable way, at a need
• the discharge gas carries along some portion of the reaction products and thus presents an ecological burden to the whole technology
• the phase balance violation caused by insufficient gas dispersion brings about total conversion of the process, which has to be stopped consequently Such a lapse causes significant economical losses
• the greatest portion of the by-products formed herein represent dichlo ⁇ des, formed as a result of inadequate mixing and homogenization of the reaction mixture in the individual reaction steps and subsequently of formation and accumulation of the third phase in the reaction system, where the undesired reactions proceed preferably afterwards.
• the next by-product is formed in consecutive reactions of alkylenechlorohyrin (ACH) on rising the residence time of the product in the reaction system.
• ACH alkylenechlorohyrin
• This invention describes device for chemical technology applications, suitable for systems, where the reaction rate is limited by diffusion, or for systems with coexistence of several phases: gas / liquid (g/l), gas / liquid / liquid (g/l/l), gas / liquid /solid (g/l/s).
• the embodiments of this invention comprise a reactor of gaslift type (the only source of energy is the gas expansion, which dissipates in the upward movement of the liquid/gas dispersion in the reactor) with internal circulation of the reaction medium, with continuous feed of the starting materials and discharge of the product, and its use in e.g. process of production of epoxy-compounds via the corresponding chlorohydrins, in particular, it relates to the step of alkylenechlorohydrin (ACH) production in the reaction of gaseous chlorine, water and olefin.
• ACH alkylenechlorohydrin
• the constructional solution of the reactor enables high yield of the desired product achievement and suppression of by-products formation.
• the device has a shape of two concentric vertical cylinders, inside of which the liquid circulates as a result of difference in density of the fluid at a given time present in riser (the inner cylinder, bubble section) and down-comer (the outer cylinder, recycling section) of the reactor.
• the material outfit of the reactor components is designed to withstand acidic medium with oxidative properties.
• Height of the reactor is from 2 to 12 m
• ratio of down-comer and riser areas ranges from 0.9 up to 2.9
• ratio of the reactor height and width from 3 up to 50.
• Flanges of the individual riser and down-comer sections are located in the same heights and joined mutually.
• the upper part of the reactor is designed and functions as separator. It comprises a section, which is formed by widening the down-comer of 3/5 up to 3/4 of its original diameter, wherein the changeover passage between the original and the widened zone of the down-comer is designed conically. Outlet of the product solution also emerges from this zone. Flanged- gas discharge piping is located on the lid of the reactor. Inner section of the separator is formed by the part of the riser, which extends up to the first half of the height of the widened down-comer section. For purposes of the process effectiveness observing the separator is equipped with two observation holes at the opposite sides of the separator. The height of the down- comer5 section of the reactor is from 1/2 to 3/5 of the riser4 height. The height of the liquid level in the reactor is adjustable and is maintained by a regulation device placed on the separator lid.
• riser3 and down-comer3 section enables, with respect to the high demands on its material resistance, changing the type of the distributor used.
• a reaction component is introduced through a jet nozzle.
• a distributor which usually is, from the material and construction point of view, designed differently from the distributor.
• openings round the body of the riserl . These openings allow the circulating liquid to be sucked in from the down-comer into the riser.
• the total area of the openings is minimally 90% of the riser cross-sectional area, whereupon the size of the openings rises gradually in the downward direction.
• a part of the down-comer is equipped with heating/cooling jacket.
• the reaction mixture composition and concentration indication is based on measurement of redox-potential values after each of the reaction zones.
• the third phase is withdrawn through the C and E valves at the bottom of the reactor. There's a sampling valve in the riser3 section.
• the reaction mixture temperature is checked after each of the reaction zones, in the riser3 section and on the lid of the separator.
• a gaseous olefin - propylene is introduced in the reactor through distributor (S2), gaseous chlorine through distributor (S1 ) and water through the nozzle (B).
• Hypochlorination of propylene (PR) occurs to produce propylenechlorohydrin (PCH).
• the selectivity reached the steady-state value of above 94% at practically total chlorine conversion.
• This device is suitable for systems of chemical technology, where the reaction rate is limited by diffusion, or for systems with coexistence of several phases: gas / liquid (g/l), gas / liquid / liquid (g/l/l), gas / liquid /solid (g/l/s).

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Physical Or Chemical Processes And Apparatus (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=32391150

Family Applications (1)

Country Status (6)

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Family Cites Families (6)

• 2002
  • 2002-11-26 SK SK1676-2002A patent/SK285692B6/sk unknown
• 2003
  • 2003-04-04 PL PL03375505A patent/PL375505A1/xx unknown
  • 2003-04-04 WO PCT/SK2003/000006 patent/WO2004047980A1/en not_active Ceased
  • 2003-04-04 AU AU2003222562A patent/AU2003222562A1/en not_active Abandoned
  • 2003-04-04 RU RU2005120243/15A patent/RU2005120243A/ru not_active Application Discontinuation
  • 2003-04-04 EP EP03717864A patent/EP1569747A1/de not_active Withdrawn

Non-Patent Citations (1)

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