Naphtha, hydrodesulfurization

FACTORS INFLUENCING THE PERFORMANCE OF NAPHTHA HYDRODESULFURIZATION CATALYSTS... 

Hydrocyanic ether. See Propionitrile Hydrocyclin. See Oxytetracycline hydrochloride Hydrodesulfurized heavy naphtha. See Naphtha, hydrodesulfurized heavy Hydrodesulfurized kerosene. See Kerosene, hydrodesulfurized... 

Hydrodesulfurized naphtha, heavy. See Naphtha, hydrodesulfurized heavy Hydrodiisobutylaluminum. See Diisobutylaluminum hydride Hydroessential Jasminum. See Jasmine (Jasminum officinale) extract Hydroessential Matricaria. See Matricaria (Chamomilla recutita) extract Hydroessential Thymus. See Thyme (Thymus... 

Kerosene, odorless. See Deodorized kerosene Kerosene (petroleum), hydrotreated. See Petroleum distillates, hydrotreated light Kerosine Kerosine (petroleum). See Kerosene Kerosine (petroleum), hydrodesulfurized. See Kerosene, hydrodesulfurized Kerosoi. See Naphtha, hydrodesulfurized heavy KESSCO 653. See Cetyl palmitate KESSCO 654. See Cetyl myristate KESSCO 3283. See Propylene glycol soyate Kessco BE. See Behenyl erucate Kessco CP. See Cetyl palmitate KESSCO DCA. See Dicapryl adipate Kessco DEHS. See Dioctyl sebacate KESSCO DGDS. See PEG-2 distearate KESSCO DGMS, KESSCO DGS Neutral. See PEG-2 stearate... 

Naphtha, heavy hydrotreated. See Naphtha, hydrotreated heavy Naphtha, hydrodesulfurized heavy CAS 64742-82-1 EINECS/ELINCS 265-185-4 Synonyms High flash white spirit Hydrodesulfurized heavy naphtha Hydrodesulfurized naphtha, heavy Naphtha (petroleum), hydrodesulfurized heavy Petroleum naphtha, hydrodesulfurized heavy White spirits, hydrodesulfurized White spirit. White spirit, high flash Classification Petroleum distillate Definition Complex combination of hydrocarbons obtained from a catalytic hydrodesulfurization process mixt. of aliphatic and aromatic hydrocarbons, predominantly C7-12 Properties B.p. 90-230 C Uses Solvent... 

Petroleum naphtha, heavy alkylate. See Naphtha, heavy alkylate Petroleum naphtha, hydrodesulfurized heavy. See Naphtha, hydrodesulfurized heavy Petroleum oil. See Naphtha Mineral oil Petroleum pitch. See Asphalt Petroleum raffinate. See Petroleum raffinates, sorption process... 

Shellsol 71. See Petroleum distillates Shellsol 1495 Shellsol 1626 Shellsol 2046. See Naphtha, hydrodesulfurized heavy Shellsol A100 Solvent See Naphtha, light aromatic... 

Spirdane D40. SeeC9-11 isoparaffin Spirdane D40L. See C9-10 isoparaffin Spirdane D60. See C9-12 isoparaffin Spirdane D60L. See C10-11 isoparaffin Spirdane HT. See Naphtha, hydrodesulfurized heavy... 

White spirits, hydrodesulfurized White spirit. White spirit, high flash. See Naphtha, hydrodesulfurized heavy White Swan. See Lanolin White tar. See Naphthalene White tea tree. See Cajeput (Melaleuca leucadendron) oil... 

Methoxypropyl formamide Methylamine N-Methylaniline Methyl behenate o-Methylbenzyl alcohol 2-Methyl-1-butanol Methyl caproate Methylcyclohexanol acetate N-Methylcyclohexylamine N-Methylethanolamine Methylhydrazine Methyl-(S)-lactate 3-Methylpentane Methyl phthalyl ethyl glycolate 1-Methylpiperidine 2-Methylpropanal Mixed terpenes Naphtha, heavy aliphatic Naphtha, heavy alkylate Naphtha, heavy aromatic Naphtha, hydrodesulfurized heavy Naphtha, hydrotreated heavy Naphtha, hydrotreated light Naphthalene Naphtha, light aliphatic Naphtha, light alkylate Naphtha, solvent-refined light Naphthenic acid Naphthol spirits Neoheptane... 

Naphtha, hydrodesulfurized heavy Shellsol 1495 Shellsol 1626 Shellsol 2046 Shellsol H Spirdane HT 64742-88-7 Envirolite Solvent Naphtha, medium aliphatic Shellsol 9 Shellsol 16 Shellsol D38 Shellsol D43 Shellsol D60 64742-89-8 2429 Naphtha Naphtha, light aliphatic Shellsol Heptane Shellsol WHT Special Lactolite VM P Naphtha HT 64742-93-4 Asphalt, oxidized MR 285 MR 305 64742-94-5 Aromatic 150 Aromatic 200 HAN 906 Solvent Naphtha, heavy aromatic Naphthalene Depleted Aromatic 150 Fluid Naphthalene Depleted Aromatic 200 Fluid Petri nex ASB Shellsol A200 Solvent SolvG Solvarex 10 Solvarex 90/180 Solvaro AFD... 

Naphtha, hydrodesulfurized heavy Shellsol 1495 Shellsol 1626 Shellsol 2046 Shellsol H Spirdane HT 265-191-7 Envirolite Solvent Naphtha, medium aliphatic Shellsol 9 Shellsol 16 Shellsol D38 Shellsol D43 Shellsol D60 265-192-2... 

Thermal Cracking. In addition to the gases obtained by distillation of cmde petroleum, further highly volatile products result from the subsequent processing of naphtha and middle distillate to produce gasoline, as well as from hydrodesulfurization processes involving treatment of naphthas, distillates, and residual fuels (5,61), and from the coking or similar thermal treatment of vacuum gas oils and residual fuel oils (5). 

The feed to a catalytic reformer is normally a heavy naphtha fraction produced from atmospheric distillation units. Naphtha from other sources such as those produced from cracking and delayed coking may also be used. Before using naphtha as feed for a catalytic reforming unit, it must be hydrotreated to saturate the olefins and to hydrodesulfurize... 

Thus, on a chemical basis, it is possible to define the hydrodesulfurization process in terms of the feedstock type and the required products. In practice, it may actually be difficult, if not impossible, to carry out nondestructive hydrogenation and completely eliminate carbon-carbon bond scission as in the case of the desulfurization of naphtha. For heavy oils and residua, it is usually preferable to promote hydrocracking as an integral part of the desulfurization process. 

However, there are more chances of localized heating in the catalyst bed and (in addition to the more expensive reactor design per unit volume of catalyst bed) it may be more difficult to remove contaminants from the bed as part of the catalyst regeneration sequence. For this reason alone, it is preferable that this type of reactor is limited to hydrodesulfurization of low-boiling feedstocks such as naphtha and kerosene and application to the higher-boiling heavy oils and residua is usually not recommended. 

The hydrodesulfurization of low boiling (naphtha) feedstocks is usually a gas-phase reaction and may employ the catalyst in fixed beds and (with all of the reactants in the gaseous phase) only minimal diffusion problems are encountered within the catalyst pore system. It is, however, important that the feedstock be completely volatile before entering the reactor as there may be the possibility of pressure variations (leading to less satisfactory results) if some of the feedstock enters the reactor in the liquid phase and is vaporized within the reactor. 

The hydrodesulfurization of light (low-boiling) distillate (naphtha) is one of the more common catalytic hydrodesulfurization processes since it is usually used... 

Generally, hydrodesulfurization of naphtha feedstocks to produce catalytic reforming feedstocks is carried to the point where the desulfurized feedstock contains less than 20 ppm sulfur. The net hydrogen produced by the reforming operation may actually be sufficient to provide the hydrogen consumed in the desulfurization process. 

The next processing stage, hydrodesulfurization, is where most of the sulfur, some of the nitrogen, and the residual metals are removed. A limited amount of conversion also takes place. From the final reactor, the gas phase is separated, hydrogen is recirculated to the reaction section, and the liquid products are sent to a conventional fractionation section for separation into naphtha, middle distillates, and heavier streams. 

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