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environment t For cleaner air in the 70s If you're interested in this section of the Porinrlir tahlft iviiw mm^rn mm -mm y you've come to the right place... DAVISON CHEMICAL This is also the group which is a specialty of our Rare Earth Depart ment. If you haven't yet evaluated Grace/Davison's rare earth chem icals, take a moment to fill out and mail the coupon below to express your specific needs. It may well put more profit and performance in your products! t------------------------------------------------------------------------------------- 1 ! W. R. GRACE & CO. ! DAVISON CHEMICAL DIVISION J 4000 N. Hawthorne Street J Chattanooga, Tenn. 37406 J Please send me technical data on: ! Rare Earth Chloride j Rare Earth Fluoride | Rare Earth Carbonate j Rare Earth Oxide t Cerium Oxide i Cerium Hydrate ! Lanthanum Salts J Didymium Salts J Thorium Salts j High Purity Rare Earths > Specific information regarding J rare earths NAME POSITION COMPANY ADDRESS CITY STATE/ZIP L.......______ ____________| Circle 028 on Mgt. Info. Service Card 76 CHEMICAL WEEK March 18', 1970 Cutting down on air pollution from ter and oxides of nitrogen. But both use of two big-volume petroleum prod companies say their devices can bring ucts, gasoline and fuel oil, is the aim of hydrocarbon and carbon monoxide developments detailed last week by emissions into line. three large oil and chemical firms. The secret of Mobil's catalytic muf (1) Gulf Oil says a 30-year, $ 15-mil fler is a catalyst that does not use any lion research effort has been climaxed precious metals. The company says it with the successful operation of a will operate efficiently up to 12,000 27,000-bbls./day unit to remove sulfur miles with leaded gas and up to 50,000 from Kuwaiti residual oil in the Mizu- miles with unleaded fuel. Du Pont's shima refinery at Osaka, Japan. thermal reactor has undergone 100,000 (2) Du Pont is offering, in the public miles of testing. domain, a manifold thermal reactor that's said to make it possible--with the types of autos and leaded gasolines now Suing for a shut-down in use--to meet the standards expected Officials in Florida's Manatee County in '80 for exhaust emissions of carbon have brought suit for a shut-down order monoxide and hydrocarbons. on Borden Chemical's Piney Point (3) Mobil Oil summarizes its three- phosphates plant, asking that it be year participation in the 11 -member In closed "until adequate pollution-control ter-Industry Emission Control (IIEC) steps are taken." program with the introduction of three The suit, filed last month in the exhaust-control systems, using catalytic state's 12th circuit court, alleges that on afterburners and thermal reactors, to Feb. 6 and 20 the wet-process phos meet projected standards for carbon phoric acid plant discharged phosphoric monoxide and hydrocarbon emissions. acid, fluorides and phosphates into pub- Catalyst Course: Gulfs hydro gTic waters. The discharges have been desulfurization (HDS) process, using a I cited as the cause of a substantial fish- catalyst-bed reactor, has been operating (I kill in Tampa Bay. recently in the Mizushima refinery. The suit asks (1) a temporary in The two-train plant feeds hydrogen junction to close the plant until steps to the crude oil. The mixture passes are taken to prevent a recurrence of the through a furnace, a reactor, a separator discharges, and (2) a permanent in and then a fractionation column. Re junction requiring installation of waste sult: the oil's sulfur content--originally handling facilities. 4%--is reduced to "as low as 1%." Th'e The company admits that there were hydrogen sulfide generated is converted accidental spills, resulting from equip into hydrogen (fed back into the pro ment malfunction. And Borden is chal cess) and elemental sulfur. . lenging certain provisions of the Development of the catalyst was the Manatee County pollution-control key to the success of Gulfs process. It code, asserting that the requirements had to be able to tolerate large amounts are "beyond the state of the art." Other of deposited vanadium and nickel freed wise, Borden will not comment on the from the asphaltene molecules, as well suit until it has filed its answer,^ as iron oxide products of corrosion, and Official Access: The county also asks still retain high hydrogenation activity. the court to order that the county's pol Gulf won't reveal specifics of its catalyst lution-control officers be given access to but says it will operate with a deposit the plant. According to the county, a load equal to 65% of its own weight. ''pollution-control official was riot While not revealing the costs of the allowed to enter and examine the Piney Osaka unit. Gulf estimates the capital Point plant. cost of a 40,000-bbls./day unit at $21 Borden says it refused admittance in million; operating costs (without a sul , order to protect its lggal position. The fur credit) are put at 55-60c/bbl. These j irfSrvidiraF^SaTrefused ~en trance in his are close to those claimed by UOP for capacity as county pollution-control of the Isomax unit it built for Japan's Ide ficer, but, says a company spokesman, mitsu Kosan (CW, May 25, `68, p. 73). he would have been allowed to enter The Mobil and Du Pont systems are j the plant in any of his other roles as not designed to handle particulate mat county engineer. END DSW 552103 STLCOPCB4090520