Desulfurization method and novel sorbents for same

An adsorbent and sulfur removal technology, which is applied in the direction of solid adsorbent liquid separation, separation method, adsorption purification/separation, etc., can solve problems such as loss of octane number, achieve sulfur content reduction, and avoid significant decline in octane number Effect

Inactive Publication Date: 2012-08-08
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] It has been found that the lifetime of the sorbent system is extended when the hydrogen content in the desulfurization zone is increased, but this extended activity comes at the expense of octane

Method used

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  • Desulfurization method and novel sorbents for same
  • Desulfurization method and novel sorbents for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0105] A slurry prepared by mixing 6.5% by weight titanium dioxide, 13.5% by weight zinc oxide and 80% by weight water was spray dried using a Niro spray dryer. The resulting product having an average particle size of 90 µm was calcined at 899°C for 3 hours.

[0106] The zinc titanate product after 100g gained roasting is dissolved in 59.4gNi(NO 3 ) 2 ·6H 2 O impregnation. The nickel-impregnated zinc titanate was then dried at 148.89°C (300°F) for 2 hours and fired at 635°C (1175°F) for 1 hour.

[0107] The resulting calcined nickel oxide-zinc titanate adsorbent was heated in a reactor at 371.11°C (700°F) at 1.03×10 5 Pa (absolute pressure) (15psia) total pressure and 1.03×10 5 Reduction at a hydrogen partial pressure of Pa (15 psi) for 2.5 hrs produced a reduced nickel-zinc titanate solid sorbent in which the nickel component of the sorbent composition was substantially reduced.

Embodiment II

[0110] The desulfurization ability of the granular nickel-zinc titanate adsorbent prepared in Example I was tested as follows.

[0111] A 2.54 cm (1 in) quartz tube reactor was charged with the unreduced sorbent of Example I in the amounts indicated below. The solid nickel-zinc titanate sorbent was placed on a frit in the middle of the reactor and reduced with hydrogen as described in Example I. A gaseous cracked gasoline containing about 340 ppm sulfur (parts by weight of sulfur compounds based on the weight of the gaseous cracked gasoline) and about 95 ppm sulfur based on the weight of the gaseous cracked gasoline was pumped upward through the reactor. % by weight thiophenes (eg, alkylbenzothiophenes, alkylthiophenes, benzothiophenes, and thiophenes). The flow rate is 13.4ml / hr. Produces sulfurized solid sorbent and desulfurized gaseous cracked gasoline.

[0112] and get the following result:

[0113] Under the conditions shown in Table 1, the sulfur in gasoline decrease...

Embodiment III

[0119] A slurry prepared by mixing 6.5% by weight titanium dioxide, 13.5% by weight zinc oxide and 80% by weight water was spray dried using a Niro spray dryer. The resulting product having an average particle size of 90 µm was calcined at 899°C for 3 hours.

[0120] The zinc titanate product after 100g gained roasting is dissolved in 59.4gNi(NO 3 ) 2 ·6H 2 O impregnation. The nickel-impregnated zinc titanate was then dried at 148.89°C (300°F) for 2 hours and fired at 635°C (1175°F) for 1 hour.

[0121] 50 g of the resulting nickel-impregnated zinc titanate sorbent was impregnated a second time with 29.7 g of nickel nitrate hexahydrate dissolved in 4 g of deionized water heated to 82.2°C (180°F). After the secondary impregnation, the impregnated sorbent was dried at 148.89°C (300°F) for 1 hour and calcined at 635°C (1175°F) for 1 hour.

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Abstract

Particulate sorbent compositions comprising zinc titanate support having thereon a substantially reduced valence promotor metal selected from the group consisting of cobalt, nickel, iron, manganese, copper, molybdenum, tungsten, silver, tin and vanadium or mixtures thereof provide a system for the desulfurization of a feed stream of cracked-gasolines or diesel fuels in a desulfurization zone by aprocess which comprises contacting such feed streams in a desulfurization zone with a particulate sorbent composition followed by separation of the resulting low sulfur-containing steam and sulfurized sorbent and thereafter regenerating and activating the separated sorbent before recycle of same to the desulfurization zone.

Description

field of invention [0001] This invention relates to the desulfurization of cracked gasoline and diesel fuel fluid streams. In another aspect, the invention relates to sorbent compositions suitable for desulfurization of cracked gasoline and diesel fuel fluid streams. In yet another aspect, the invention relates to a process for the production of sulfur sorbents for desulfurization from cracked gasoline and diesel fuel fluid streams. Background of the invention [0002] The need for cleaner fuels has led to ongoing worldwide efforts to reduce the sulfur content of gasoline and diesel fuel. Reducing the sulfur content of gasoline and diesel is considered one of the measures to improve air quality, because sulfur in the fuel has an adverse effect on the performance of automobile catalytic converters. The presence of sulfur oxides in automobile engine exhaust inhibits and can irreversibly poison noble metal catalysts in the converter. Exhaust gases from inefficient or poisone...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G29/02C10G29/04C10G29/06C10G29/08C10G25/00C07C7/12B01J23/06B01J23/16B01J23/22B01J23/24B01J23/28B01J23/30B01J23/32B01J23/34B01J23/50B01J23/58B01J23/70B01J23/74B01J23/75B01J23/755B01J23/80B01D15/00B01J20/02B01J20/06B01J20/28B01J20/30B01J20/34B01J21/06B01J23/00B01J37/00B01J37/02B01J37/16C10G29/16
CPCB01J20/0225C10G2300/1055B01J20/06C10G2400/04C10G2300/104C10G2400/02B01J23/002B01J20/0211B01J37/0201B01J20/3234C10G2300/4093B01J37/0045C10G2300/202B01J23/06C10G2300/703C10G25/003B01J20/0244B01J21/063B01J20/02B01J37/16B01J2523/00B01J20/2803B01J20/3078B01J20/3204B01J20/3236B01J2523/27B01J2523/47B01J2523/847B01J20/28016
Inventor G·P·卡尔
Owner CHINA PETROLEUM & CHEM CORP
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