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    • 3. 发明授权
    • Process for producing calcium hypochlorite
    • 生产次氯酸钙的方法
    • US4328200A
    • 1982-05-04
    • US269241
    • 1981-06-01
    • Cletus N. WelchClifford E. LoehrRoger A. CrawfordJohn E. Carbaugh
    • Cletus N. WelchClifford E. LoehrRoger A. CrawfordJohn E. Carbaugh
    • C01B11/06
    • C01B11/064Y02P20/125
    • A continuous integrated process for the production of calcium hypochlorite in which crystals of by-product sodium chloride are more easily separated for the calcium hypochlorite product is described. The process includes: (a) introducing with agitation into a vessel an aqueous slurry of dibasic calcium hypochlorite, sodium hydroxide, and aqueous salt solution saturated with calcium ion and sodium chloride in amounts at least sufficient to substantially dilute the sodium hydroxide; (b) forwarding the resulting aqueous mixture of step (a) to a chlorination zone containing a seed bed of calcium hypochlorite and sodium chloride crystals; (c) introducing chlorine into the chlorination zone, thereby producing an aqueous suspension containing further quantities of calcium hypochlorite crystals and readily separable significantly larger sodium chloride crystals; and (d) removing aqueous suspension containing such calcium hypochlorite and sodium chloride crystals from the chlorination zone to a classification zone. Calcium hypochlorite crystals are maintained in suspension in and removed from the upper portion of the classification zone; while the larger and more dense crystals of sodium chloride settle and are removed from the lower portion of said classification zone.
    • 描述了一种用于生产次氯酸钙的连续一体化方法,其中副产物氯化钠的晶体更容易分离用于次氯酸钙产物。 该方法包括:(a)在搅拌下将至少足以基本上稀释氢氧化钠的量的钙离子和氯化钠饱和的二价次氯酸钙,氢氧化钠和盐水溶液的水性浆料搅拌引入容器中; (b)将得到的步骤(a)的水性混合物转移到含有次氯酸钙和氯化钠晶体的种子床的氯化区; (c)将氯引入氯化区,从而产生含有更多量的次氯酸钙晶体和容易分离的显着较大氯化钠晶体的水性悬浮液; 和(d)将含有这种次氯酸钙和氯化钠晶体的含水悬浮液从氯化区移除到分级区。 将次氯酸钙晶体保持在分级区上部的悬浮液中并从分离区的上部除去; 而较大和更致密的氯化钠晶体沉淀并从分级区的下部除去。
    • 5. 发明授权
    • Extended jacket end, double expansion hydroforming
    • 延长护套端,双膨胀液压成型
    • US5673470A
    • 1997-10-07
    • US522172
    • 1995-08-31
    • James R. DehlingerRoger A. CrawfordWallace J. PooleRobert A. ShafferDonald R. VandePolder
    • James R. DehlingerRoger A. CrawfordWallace J. PooleRobert A. ShafferDonald R. VandePolder
    • F01N13/08B21D26/045B21D39/08B21D39/04B21D26/02
    • B21D26/045Y10T29/49398Y10T29/49805Y10T29/49879Y10T29/5199
    • Hydroforming double wall tubular stock into an air gap tubular element comprising providing a plural wall tubular workpiece having at least an inner wall liner and an outer wall jacket having adjacent open axial ends, causing at least one of the jacket ends to extend axially beyond the adjacent liner end and to be flared outwardly, placing the workpiece into a first mold cavity of a size and configuration to result in the desired size and configuration of the liner, sealing the open ends of said liner, injecting hydroforming fluid into said liner to fill it and applying pressure thereto to expand the liner and jacket in the first mold cavity, releasing the pressure, placing the workpiece in a second mold cavity of a size and configuration desired for the jacket on a resulting air gap tubular element, providing hydroforming end closures to seal off the jacket ends, at least one of the end closures having an annular shoulder aligned with the flared extended jacket end radially outwardly offset from the adjacent liner end, pressing the annular shoulder directly against the flared jacket end to seal the flared jacket end between the shoulder and an anvil surface, injecting fluid into the workpiece to fill it and applying pressure to expand only the jacket.
    • 将双壁管状原料液压成气隙管状元件,包括提供具有至少内壁衬套和具有相邻开口轴向端部的外壁套管的多壁管状工件,使得至少一个护套端部轴向延伸超过相邻 衬里端部并向外张开,将工件放置在尺寸和构造的第一模腔中,以产生所需衬套的所需尺寸和构造,密封所述衬套的开口端,将液压成形流体注入所述衬套以填充 并向其施加压力以使第一模腔中的衬套和护套膨胀,释放压力,将工件放置在所形成的空气间隙管状元件上用于套管所需的尺寸和构造的第二模腔中,从而提供液压成形端盖 封闭护套端部,至少一个封闭件具有与扩张的扩展护套对准的环形肩部径向向外 偏离相邻的衬垫端,将环形肩部直接压靠在扩口护套端部上,以密封肩部和砧座表面之间的喇叭形护套端部,将流体注入工件以填充其并施加压力以仅膨胀护套。
    • 7. 发明授权
    • Process for producing calcium hypochlorite
    • 生产次氯酸钙的方法
    • US4390512A
    • 1983-06-28
    • US350653
    • 1982-02-22
    • Clifford E. LoehrRoger A. CrawfordJohn E. CarbaughCletus N. Welch
    • Clifford E. LoehrRoger A. CrawfordJohn E. CarbaughCletus N. Welch
    • C01B11/06
    • C01B11/064Y02P20/125
    • A continuous integrated process for the production of neutral calcium hypochlorite in which crystals of by-product sodium chloride are more easily separated from the calcium hypochlorite product is described. The process includes diluting an aqueous slurry of sodium hydroxide, lime and bleach mother liquor with aqueous salt solution saturated with calcium ion and sodium chloride and chlorinating the resulting aqueous admixture in the presence of a seed bed of sodium chloride crystals and calcium hypochlorite crystals at temperatures less than 35.degree. C., e.g., 15.degree.-20.degree. C. A suspension of readily separable, sodium chloride crystals and calcium hypochlorite crystals in chlorinator liquor is conveyed to a classification zone where the sodium chloride and calcium hypochlorite crystals are separated.
    • 描述了用于生产中性次氯酸钙的连续一体化方法,其中副产物氯化钠的晶体更容易从次氯酸钙产物中分离出来。 该方法包括用氯化钠和氯化钠饱和的盐水溶液稀释氢氧化钠,石灰和漂白母液的含水浆液,并在温度下氯化钠晶体和次氯酸钙晶体的种子床存在下氯化得到的水混合物 低于35℃,例如15-20℃。氯化钠溶液中容易分离的氯化钠晶体和次氯酸钙晶体的悬浮液被输送到氯化钠和次氯酸钙晶体分离的分级区域。
    • 8. 发明授权
    • High solids aqueous silica slurry
    • 高固体含水二氧化硅浆液
    • US5030286A
    • 1991-07-09
    • US396402
    • 1989-08-14
    • Roger A. CrawfordThomas G. KrivakPatrick G. MalloyDa-Hung Yang
    • Roger A. CrawfordThomas G. KrivakPatrick G. MalloyDa-Hung Yang
    • C01B33/14C01B33/141C01B33/187C08K3/36C08L33/04C08L33/06D21H19/40
    • C01B33/1417D21H19/40Y10S423/15
    • Described are high solids aqueous slurries of amorphous precipitated hydrated silica, which slurries are of relatively low viscosity. The slurry typically contains from about 40 to about 60 weight percent of hydrated precipitated high structure silica. The viscosity of the high solids slurry is less than about 1000 centipoises. Processes for producing the aqueous high solids silica slurry are disclosed. In one embodiment, a wet cake of amorphous precipitated hydrated silica is liquified and the liquified wet cake charged to a high intensity mill wherein the silica is wet milled until the median agglomerate particle size of the silica is between about 0.3 and about 3 microns. In a further embodiment, finely-divided dry amorphous precipitated silica is slurried in a dispersion mill to the desired solids level and this slurry charged to a high-intensity mill and wet milled therein until the aforesaid agglomerate particle size range is attained. The resulting high solids slurry can be shipped in bulk with only mild agitation to prevent setting. A dispersant may also be added to the slurry prior to milling to retard settling of the silica.
    • 描述了无定形沉淀的水合二氧化硅的高固体含水浆料,其中浆料的粘度相对较低。 浆料通常含有约40至约60重量%的水合沉淀高结构二氧化硅。 高固体浆料的粘度小于约1000厘泊。 公开了用于生产含水高固体二氧化硅浆料的方法。 在一个实施方案中,将无定形沉淀的水合二氧化硅的湿滤饼液化并将液化的湿滤饼装入高强度研磨机中,其中二氧化硅被湿磨,直到二氧化硅的中值附聚物粒度在约0.3至约3微米之间。 在另一个实施方案中,将细碎的干无定形沉淀二氧化硅在分散研磨机中浆化至所需的固体含量,并将该浆料装入高强度研磨机中并在其中湿磨,直到达到上述附聚物粒度范围。 所得到的高固体浆料可以散装运输,只需轻微的搅拌即可防止固化。 在研磨之前还可以将分散剂加入到浆料中以阻止二氧化硅沉降。