摘要:
A mounting assembly 4 is provided for a feed tube 12 of a high-temperature fluid-wall reactor of the type having a vertically oriented reactor tube heated to incandescence for emitting radiation radially inward to a reaction zone. The mounting assembly 4 comprises a tube support 34 having an opening 42 through which the feed tube 12 can pass, and a pivot seat member 30 secured to the reactor. The assembly 4 further comprises a retainer 52 for selectively fixing the orientation of the feed tube relative to the reactor, and a releasable attachment mechanism 70 for allowing the axial position of the feed tube to be adjusted relative to the assembly 4. According to the method of the invention, undesirable conditions within the reactor are detected, and the orientation of the feed tube is pivotably adjusted in response thereto for reducing undesirable reactor operating conditions.
摘要:
A gas generator construction particularly for the inflation of inflatable protective bags which are used in safety systems of vehicles comprises a housing with a central tubular housing part which contains an ignition device that is surrounded by a reaction chamber containing a gas generating charge which in turn is surrounded by an outer filter housing. The gases which are generated in the reaction chamber are directed through openings and into the filter housing and then outwardly through slots of the filter housing for use in expanding the protective bag. The reaction chamber and the filter chamber are formed by an annular substantially S-shaped wall member which has a bottom forming wall portion for the reaction chamber which is joined to the central tubular part, for example, by welding. The S-shaped wall member includes a division wall between the reaction chamber and the filter chamber and an outer casing portion forming a cylindrical outer wall which is connected to the division wall between the two chambers by a curved web portion of the S-shaped wall. A dome shaped cover is employed to enclose the reaction chamber and a cover ring is used to enclose the filter housing. Each are connected to the intermediate wall portion of the S-shaped member.
摘要:
Process for recovering compounds of enriched nuclear fuel from scrap materials is disclosed. The process yields an acid solution with the nuclear fuel dissolved therein. Except for spent filter media, the scrap materials are calcined to produce an oxidized material, which is reduced to a particulate material and leached in an acid bath that contains some recycled acid to yield an acid solution of the nuclear fuel material. The scrap materials comprised of spent filter media are mulched and contacted with the acid solution. The insoluble materials are separated from the acid solution, and at least a portion of the acid solution is recycled to the leaching step, while the remainder of the acid solution is collected for subsequent treatment to recover the dissolved nuclear fuel material. Apparatus for performing the foregoing process is also disclosed.
摘要:
Biammonium phosphate is obtained by the neutralization of phosphoric acid with ammonia in a saturator operating at atmospheric pressure. Unreacted gaseous ammonia is washed in a tower with a "rain" of phosphoric acid for ammonia recovery without any saline deposit, scaling or clogging. A second tower collects the overflow of washing acid.
摘要:
A low profile drive assembly for the agitator shaft of a reactor vessel is mounted for lateral movement relative to the agitator shaft whereby to provide access to and removal of the shaft-seal assembly via the space vacated by the drive.
摘要:
Chemical synthesis apparatus includes a differential pumping device mounted in an evacuable container between an evaporant source providing a first chemical constituent and the reaction region. The differential pumping can be provided by apertured diaphragms or hollow cones, which may be cooled, mounted directly above the source which is thereby maintained at a lower pressure than the reaction region. The source may be an electron beam source or a resistively heated source arranged to direct the evaporant upwards into the reaction region and a second chemical constituent may be introduced into the reaction region. The invention also provides a method of chemical synthesis in which differential pumping is carried out between the reaction region and the source of one of the constituents.
摘要:
A continuous feed of alkali cellulose (AKC) is partially xanthated, and then dissolved and further xanthated to form a viscose solution, while passing continuously through a series of connected reactors and slurry vessels, wherein slurries of carbon disulfide (CS.sub.2) and alkali metal hydroxide are maintained. The AKC feed to the system may be shredded crumbs from any standard alkali cellulose system, to shredded crumbs from a continuous sheet steeping mercerization system. A portion of the xanthate AKC (cellulose xanthate) may be recycled to the various slurry vessels or zones.
摘要:
A method of decomposing ammonia fumes which have a high hydrogen sulfide content, in particular, deacidizer fumes from an NH.sub.3 -H.sub.2 S closed-circuit scrubber of coke oven gases, in which the washed-out NH.sub.3 is enriched. The inventive method comprises burning a heating fuel with an amount of oxygen to generate combustion gases having a low oxygen content, heating the deacidizer fumes by direct contact with the combustion gases in order to form a hot mixture of the gases and deacidizer fumes and subsequently directing the hot mixture through a decomposition zone. A burner for decomposing the ammonia fumes comprises a cylindrical housing which has a closed end wall and an opposite opened end. A tube sheet is situated in the housing spaced from the closed end to define a combustion air chamber therein into which combustion air is fed for passage through a plurality of tubes which extend through the tube sheet and terminate in combustion air discharges at their opposite ends. An inlet is provided for coke oven gases in the space around the tubes between the tube sheet and discharge openings in a plate carrying the tubes adjacent their discharge ends. The coke oven gases are circulated from the coke oven gas chamber defined around the tubes through the small size discharge openings between the tubes to discharge the coke oven gases in the vicinity of the combustion air for combustion of the gases in a central gas flame flow. In addition, the ammonia fumes are directed in an annular jacket around the housing through an annular discharge at the periphery of the coke oven gas flame.
摘要:
A sulfonation apparatus comprising a plurality of vertical first-stage reaction tubes in which the sulfonatable material and an SO.sub.3 -containing gas are flowed upwardly from the lower ends thereof and a single vertical second-stage reaction tube in which the reaction products from the upper ends of all of the first-stage reaction tubes are combined and are flowed downwardly together with fresh SO.sub.3 -containing gas in order to complete the sulfonation reaction.
摘要:
A coke oven system is provided having a coke oven preferably with pipeline charging for converting coal into coke. Carryover fines are collected from the coke oven and preferably a preheater therefor, and then agitated by agitator means and the collected carryover fines thereby agglomerated. Preferably, the carryover fines are first mixed with water to form an aqueous mixture, and then agglomerated. The agglomerated carryover fines are then preferably separated from the aqueous mixture by separated means. The agglomerated carryover fines are preferably conditioned in dryer means and recirculated to the coke oven preferably through a preheater.