Alkylation

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  1. Chevron’s Salt Lake City refinery plans alkylation unit revamp

    Chevron Corp. is planning to convert the existing 4,500-b/d hydrofluoric acid (HF) alkylation unit at its 53,000-b/d refinery in Salt Lake City, Utah, into the first-ever alkylation unit in the US based on ionic liquids (IL) alkylation technology. Chevron will convert the existing 4,500-b/d HF alkylation unit at Salt Lake City to ISOALKY, a proprietary alkylation technology developed by Chevron USA Inc. and now licensed by Honeywell International Inc.’s UOP LLC, that uses ionic liquids instead of HF or sulfuric acids as a liquid alkylation catalyst for production of high-octane fuels, UOP said. Alongside increasing C 3 -C 5 olefin feed flexibility and lower handling risks vs. HF and sulfuric acid, ISOALKY enables catalyst regeneration to occur within the unit itself, lowering catalyst consumption by 400 times vs. sulfuric acid, according to the technology licensor. Pending permit approvals, construction on the conversion project is scheduled to begin in 2017, with the ISOALKY unit due for startup in 2020. Once the unit is fully commissioned, Chevron will permanently remove the refinery’s HF-specific equipment as well as inventory of HF acid, UOP said. While neither Chevron nor UOP disclosed further details surrounding the project, UOP did confirm Chevron’s decision to move forward with the proposed unit revamp follows results of ISOALKY’s performance in a 5-year pilot study carried out in a small demonstration unit at the Salt Lake City refinery. Existing IL technologies Announcement of Chevron’s proposed HF-to-IL unit conversion follows the South Coast Air Quality Management District (SCAQMD) of California’s Sept. 9 release of an alkylation technology study by Norton Engineering Inc., Montville, NJ, that recommends sulfuric acid alkylation and solid acid alkylation as the most commercially available and potentially feasible technology options for replacing HF alkylation units at refineries in SCAQMD’s region. SCAQMD is air pollution-control agency responsible for all of Orange County as well as urban portions of Los Angeles, Riverside, and San Bernardino counties. Commissioned by SCAQMD, the independent study concludes commercialization of IL alkylation technology requires additional optimization and testing to be considered viable as a replacement technology for existing HF units in the district. IL alkylation technology, however, already has been successfully employed on both pilot and commercial-scale bases in China in a retrofit of a sulfuric acid alkylation unit as well as construction of a grassroots unit. Following 8 months of extensive bench-scale laboratory testing and a subsequent 60 days of operation in a continuous-flow pilot unit, PetroChina Co. Ltd. , a unit of China National Petroleum Corp. , retrofitted an existing 65,000-tonne/year sulfuric acid alkylation unit at one of its refineries with Beijing-based China University of Petroleum’s (CUP) Ionikylation process, which uses a more highly selective, composite IL catalyst vs. other IL alkylation processes ( OGJ, Oct. 23, 2006, p. 52 ). While the SCAQMD-commissioned study contends the industrial-scale test was limited to 5 days, the unit in fact continued to run cyclically for about 3 years until changes in C 4 -feedstock pricing made ongoing operation economically unappealing, an individual familiar with the project told OGJ. Chinese independent refiner Deyang Chemical Co. Ltd. subsequently selected Ionikylation for construction of grassroots alkylation unit in at its manufacturing operations in Dongying Economic Development Zone, Dongying City, Shandong Province. Intended to help meet increased demand for cleaner motor fuels both in China and abroad, the 2,000-b/d Ionikylation unit was commissioned in 2013 and remains in operation today, according to descriptions on Deyang Chemical and CUP’s web sites. Contact Robert Brelsford at rbrelsford@ogjonline.com .

    Online Articles

    Online Articles

    Tue, 4 Oct 2016

  2. Curacao inks MOU for new operator, revamp of Emmastad refinery

    China’s state-owned Guandong Zhenrong Energy Co. Ltd. (GDZR), Guangzhou, has entered a memorandum of understanding (MOU) with a division of BP PLC as part of GDZR’s agreement with the government of Curacao to take over operatorship as well as finance an upgrade of state-controlled Refineria Di ...

    Online Articles

    Online Articles

    Mon, 14 Nov 2016

  3. Vietnam lets contract for Dung Quat refinery optimization

    Binh Son Refining & Petrochemical Co. Ltd. (BSR), a subsidiary of state-owned Vietnam National Oil & Gas Group (PetroVietnam), has let a contract to Honeywell International Inc. subsidiary Honeywell UOP LLC, Des Plaines, Ill., to provide a suite of cloud-based technology and interactive support ...

    Online Articles

    Online Articles

    Wed, 9 Nov 2016

  4. Pertamina lets contract for Balikpapan refinery

    PT Pertamina (Persero) has let a contract to CB&I, Houston, to provide technology licensing and engineering design for a grassroots alkylation unit to be built as part of the upgrade and modernization of the 260,000-b/d refinery in Balikpapan, East Kalimantan, Indonesia.

    Online Articles

    Online Articles

    Mon, 25 Jul 2016

  1. Hengli lets technology contract for Chinese refining complex

    Online Articles

    Online Articles

    Tue, 8 Mar 2016

  2. HollyFrontier, HEP ink dropdown deal for Woods Cross refinery units

    Independent refiner HollyFrontier Corp., Dallas, has entered an agreement in principle to sell newly built crude, fluid catalytic cracking and polymerization units at its 45,000-b/sd Woods Cross refinery in West Bountiful, Utah, just north of Salt Lake City, to consolidated variable interest entity ...

    Online Articles

    Online Articles

    Tue, 20 Sep 2016

  3. Pertamina lets contracts for Indonesian refineries

    PT Pertamina (Persero) has entered a series of licensing agreements with Axens SA, Rueil-Malmaison, France, for technologies to be implemented as part of modernization and upgrading projects at the 260,000-b/d refinery in Balikpapan, East Kalimantan, Indonesia, and 348,000-b/d Cilacap refinery in ...

    Online Articles

    Online Articles

    Thu, 6 Oct 2016

  4. Valves enhance safety in HF alkylation process

    Descote Bellows Sealed Globe Valves like the one shown here at Shell UK's Stanlow manufacturing complex - are designed to deliver maximized protection against risk of accidental emissions of hydrofluoric acid (HF) used as a catalyst in the production of unleaded gasoline.

    Blogs

    Blogs

    Wed, 1 Jun 2005

  5. Gazprom Neft lets contract for Omsk refinery

    PJSC Gazprom Neft has let a contract to RusTechnip, a joint venture of Technip SA and Rostec State Corp. subsidiary JSC Rustechexport, for a grassroots 8.4 million-tonne/year primary crude and vacuum distillation (CDU-AVT) complex at its existing 21.4 million-tpy Omsk refinery in Western Siberia, ...

    Online Articles

    Online Articles

    Wed, 27 Jul 2016

  6. Par Pacific acquires Wyoming refinery, logistics assets

    Par Pacific Holdings Inc., Houston, has completed its previously announced deal with Black Elk Refining LLC for the purchase of Wyoming Refining Co., which operates an 18,000-b/d refinery in Newcastle, Wyo., and through its wholly owned subsidiary Wyoming Pipeline Co. LLC, related logistics assets ...

    Online Articles

    Online Articles

    Fri, 15 Jul 2016

  7. Par Pacific inks deal for Wyoming refinery, related assets

    Par Pacific Holdings Inc., Houston, has agreed to acquire Black Elk Refining LLC subsidiary Wyoming Refining Co., which operates a refinery in Newcastle, Wyo., and through its wholly owned subsidiary Wyoming Pipeline Co. LLC, related logistics assets in the region.

    Online Articles

    Online Articles

    Wed, 15 Jun 2016

  8. CSB releases incident report for Tesoro’s Martinez refinery

    Loose pipe fittings are to blame for a sulfuric acid release that seriously injured two workers in early February at the alkylation unit of Tesoro Corp.’s 161,000-b/d Golden Eagle refinery near Martinez, Calif., according to an Aug. 15 report released by the US Chemical Safety Board (CSB).

    Online Articles

    Online Articles

    Mon, 18 Aug 2014

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