Process method for reducing olefins by hydrogen desulfurization of catalytic gasoline

A catalytic cracking gasoline and hydrodesulfurization technology, which is applied in the field of catalytic cracking gasoline hydrodesulfurization and olefin reduction, can solve the problems of difficult recovery, high sulfur content in gasoline, increased equipment investment, etc., and achieve the effect of stable operation and simple process
CN102199448AInactive Publication Date: 2011-09-28PETROCHINA CO LTD
8 Cites 12 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2011-09-28
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a process method for reducing olefins by the hydrogen desulfurization of catalytic gasoline, which comprises the following steps of: cutting gasoline into a light distillate and a heavy distillate at the cutting point of between 60 and 80 DEG C; contacting the heavy distillate and hydrogen with an octane value restoration catalyst to perform an isomerization reaction, an aromatization reaction and a building-up reaction; and contacting reaction effluents which are not separated with a selective hydrogen desulfurization catalyst to perform a hydrogen desulfurization reaction, and separating hydrogenated generation oil to obtain light hydrocarbons and gasoline distillates, wherein hydrogen-enriched gas is recycled, the octane value restoration catalyst is used for loading one or two VIB or VIII group metal as active ingredients by taking one or more of aluminum oxides or molecular sieves as a carrier, an aid is one or two oxides in IIB groups or lanthanide series, the selective hydrogen desulfurization catalyst takes the aluminum oxides as the carrier, Mo and Co as active metal and one or more of Ce, Mg, K, P and F as the aid, the olefin content is less than 20 volume percent, the sulfur content is less than 50 micrograms / gram, and research octane number (RON) is improved by 1.5 to 2 units.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a process method for catalytic cracking gasoline hydrogenation desulfurization and olefin reduction, in particular to a method for secondary processing full fraction gasoline hydrogenation upgrading such as FCC. Background technique

[0002] At present, there are certain restrictions on the sulfur content and olefin content of gasoline products. The content of sulfur and olefins in secondary processed gasoline such as FCC is high. Therefore, reducing the content of sulfur and olefins in secondary processed gasoline such as FCC is the key to solving the quality of FCC gasoline.

[0003] FCC gasoline desulfurization and olefin reduction using the traditional hydrofining process will result in a large loss in the octane number of the product, 7 to 10 units of RON, and increased hydrogen consumption; the selective hydrodesulfurization method will reduce the sulfur content It can be removed to a very low level, but the reduction in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More