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Supercritical Water Oxidation SCWO

SCW is an excellent medium for the total oxidation of unwanted and hazardous organic compounds such as those that need to be removed from wastewater and process streams (Table 4 9)7 d09,iio SCCO2 are also being [Pg.90]

Totally enclosed process and 50% of available heat easily recovered Competitive unit cost No major permitting issues Good public acceptability [Pg.91]

SCWO is also being investigated as a teehnique for biomass processing, as an alternative to fermentation processes. A view cell was recently used to look at the decomposition of wood under different conditions including temperature, pressure and oxygen concentration, in order to gain a better understanding of SCWO and its potential in this area.  [Pg.91]

Two Other chemical processes that rely on hydrothermal processing chemistry are wet oxidation and supercritical water oxidation (SCWO). The former process was developed in the late 1940s and early 1950s (3). The primary, initial appHcation was spent pulp (qv) mill Hquor. Shordy after its inception, the process was utilized for the treatment of industrial and municipal sludge. Wet oxidation is a term that is used to describe all hydrothermal oxidation processes carried out at temperatures below the critical temperature of water (374°C), whereas SCWO reactions take place above this temperature. [Pg.499]

Fig. 12. Typical flow diagram of a hydrothermal oxidation process (HO), also known as supercritical water oxidation (SCWO) (73,105). Fig. 12. Typical flow diagram of a hydrothermal oxidation process (HO), also known as supercritical water oxidation (SCWO) (73,105).
Supercritical Water Oxidation (SCWO) Wet oxidation occurring in supercritical water at temperatures greater than 374°C (705°F) and pressures greater than 221 bar (3204 psig). [Pg.564]

FIG. 20-18 Physical properties of water versus temperature at 240 bar. [Reprinted from Kritzer and Dinjus, An Assessment of Supercritical Water Oxidation (SCWO) Existing Froblems, Tossibh Solutions and New Reactor Concepts Chem. Eng. ].,vol. 83(3), pp. 207-214, copyright 2001, withpermission form Elsevier ]... [Pg.15]

Supercritical technology, 23 242,13 449 Supercritical water (SCW) properties, waste detoxification and, 14 108 Supercritical water oxidation (SCWO), 24 16-17... [Pg.908]

Figure ES-2 is a block diagram of the Eco Logic technology process. The primary treatment destroys the agent and the energetic materials by hydrolysis with caustic or water. Flowever, the hydrolysis products (hydrolysates) must be further treated prior to final disposal. For this secondary step, Eco Logic proposes to use a transpiring-wall supercritical water oxidation (SCWO) reactor design. The following major operations are included ... Figure ES-2 is a block diagram of the Eco Logic technology process. The primary treatment destroys the agent and the energetic materials by hydrolysis with caustic or water. Flowever, the hydrolysis products (hydrolysates) must be further treated prior to final disposal. For this secondary step, Eco Logic proposes to use a transpiring-wall supercritical water oxidation (SCWO) reactor design. The following major operations are included ...
General Atomics Modified reverse assembly cryofracture for projectiles. Hydrolysis supercritical water oxidation (SCWO). Hydrolysis, SCWO. Hydrolysis thermal treatment to 5X. Shredded destroyed in SCWO. [Pg.37]

Foster Wheeler. 2001. Supercritical Water Oxidation (SCWO) Engineering Design Studies II—TW—SCWO GB Campaign Operability Draft Test Report, December 31. Livingston, N.J. Foster Wheeler Development Corporation. [Pg.153]

Foster Wheeler Development Corporation (FWDC) has designed a transportable transpiring wall supercritical water oxidation (SCWO) reactor to treat hazardous wastes. As water is subjected to temperatures and pressures above its critical point (374.2°C, 22.1 MPa), it exhibits properties that differ from both liquid water and steam. At the critical point, the liquid and vapor phases of water have the same density. When the critical point is exceeded, hydrogen bonding between water molecules is essentially stopped. Some organic compounds that are normally insoluble in liquid water become completely soluble (miscible in all proportions) in supercritical water. Some water-soluble inorganic compounds, such as salts, become insoluble in supercritical water. [Pg.596]

General Atomics (GA) has developed supercritical water oxidation (SCWO) systems to treat organic wastes, sludges, chemical agents, and other hazardous materials. As water is subjected to temperatures and pressures above its critical point (374.2°C, 22.1 MPa), it exhibits... [Pg.608]

Supercritical water oxidation (SCWO) has been proven to destroy some forms of organic waste. The process operates at temperatures and pressures above the critical point of water (374.2°C, 22.1 MPa). A general discussion of SCWO is included in the RIMS library/database (T0756). [Pg.611]

The unique properties of supercritical water, when combined with an oxidant such as air, oxygen, or peroxide, create an excellent reaction medium. The process, called supercritical water oxidation (SCWO), has been proven to be capable of destroying organic contaminants as well as some inorganic substances. SCWO is also known as hydrothermal oxidation (HTO). [Pg.1012]

Weatherly, Inc., developed the supercritical water oxidation (SCWO) system to treat liquid organic wastes. In February, 1999, Chematur Engineering acquired the exclusive rights to the... [Pg.1123]

Supercritical Water Oxidation (SCWO). Application to industrial wastewater treatment... [Pg.509]

M. J. Cocero, E. Alonso, D. Vallelado, R. Torio, F. Fdz-Polanco, Optimization of Operational Variables of a Supercritical Water Oxidation (SCWO) Process, Water Sci. Tech. [Pg.525]

Balhnger, R. 1999. Material Screening Tests for the Supercritical Water Oxidation (SCWO) Reactor Liner Materials of Construction. Test Report R12V-15-1, November 1999. Boston, Mass. Stone and Webster Engineering Corporation. [Pg.41]

Post Treatment - oxidation of organic compounds in the hydrolysate through supercritical water oxidation (SCWO) and removal of inorganic salts through evaporation... [Pg.53]

Two independent supercritical water oxidation (SCWO) reactor trains are located in separate rooms in the SCWO... [Pg.54]

Corrosiveness of supercritical water oxidation (SCWO) media and technical issues that need to be resolved for practical use of SCWO technology... [Pg.1]

Kritzer P, Dinjus E. An assessment of supercritical water oxidation (SCWO) existing problems, possible solutions and new reactor concepts. Chem Eng J 2001 83 207-214. [Pg.171]

Supercritical Water Oxidation (SCWO) has been proved to be a suitable process for treatment of several toxic and hazardous organic wastes due to its high removal efficiency. SCWO requires of hard reaction conditions (22.1 MPa and over 374°C). Special reactors are needed to support these conditions. An original reactor design is presented here wich has been tested in the treatment of alcohols+ammonia solutions in water. Performance results are presented here for ammonia and alcohols. Destruction efficiency greater than 99.9% are reached for both compounds, probing the correct performance of the reactor. [Pg.121]

See other pages where Supercritical Water Oxidation SCWO is mentioned: [Pg.228]    [Pg.25]    [Pg.179]    [Pg.36]    [Pg.37]    [Pg.43]    [Pg.92]    [Pg.94]    [Pg.163]    [Pg.172]    [Pg.1010]    [Pg.704]    [Pg.182]    [Pg.228]    [Pg.228]    [Pg.811]    [Pg.18]    [Pg.19]    [Pg.22]    [Pg.32]    [Pg.53]    [Pg.394]    [Pg.21]    [Pg.56]    [Pg.129]    [Pg.121]    [Pg.645]   
See also in sourсe #XX -- [ Pg.174 ]



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