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Hydro-treating method of reformate

A technology of reforming to generate oil and hydrotreating, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment, naphtha treatment, etc., which can solve the problem of huge reaction equipment, achieve simplified process route, high-efficiency and low-consumption industrial production , Reduce investment costs and operating costs

Active Publication Date: 2014-03-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The methods disclosed in CN1004421B and CN1049001C all adopt a trickle bed hydrogenation process, and a large amount of circulating hydrogen needs to be maintained in the device. On the one hand, a circulating hydrogen compressor needs to be equipped, and on the other hand, the reaction device is relatively large

Method used

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  • Hydro-treating method of reformate

Examples

Experimental program
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Effect test

Embodiment 1

[0077] (1) if Figure 5 As shown, the catalytic reforming mixture output from the reforming reactor is injected into the reformed product gas-liquid separation tank for gas-liquid separation, and reformed oil is obtained from the bottom of the separation tank. Wherein, the temperature in the separation tank is 40° C., and the pressure is 0.7 MPa; based on the total amount of the obtained reformed product oil, the reformed product oil contains 0.015% by weight of dissolved hydrogen.

[0078] (2) Inject supplemental hydrogen into the reformed oil through the mixing device, and send the hydrogen-carrying reformed oil into the tubular fixed-bed reactor (the inner diameter of the tubular reactor is 65mm; there is one Catalyst bed, the height-to-diameter ratio of the catalyst bed is 25; the catalyst with catalytic hydrogenation effect is commercially purchased from the Sinopec Fushun Petrochemical Research Institute's brand HDO-18 catalyst), shown in Table 1 The hydrogenation treat...

Embodiment 2

[0083] The reformed oil is hydrotreated in the same manner as in Example 1, except that no hydrogen is introduced into the gas channel of the hydrogen mixing device (that is, no supplementary hydrogen is injected into the reformed oil), and the obtained The aromatics content and bromine index of the hydrogenated products are shown in Table 2.

Embodiment 3

[0085] Adopt the method identical with embodiment 1 to carry out hydrotreating to reformed oil, difference is:

[0086] In step (1), the temperature in the gas-liquid separation tank is 40°C and the pressure is 0.3MPa, based on the total amount of reformed oil obtained, the reformed oil contains 0.01% by weight of dissolved hydrogen;

[0087] In step (2), the mixing device includes a membrane tube (commercially purchased from Beijing Zhongtianyuan Environmental Engineering Co., Ltd., with an outer diameter of 25.4 mm, the average pore diameter of the through holes on the substrate is 100 μm, and the average pore diameter of the through holes on the porous membrane is 250nm) and a housing (inner diameter of 40mm) used in conjunction with the pipeline; the porous membrane is located on the outer wall of the membrane tube; the cross-section of the membrane tube is as Figure 4 As shown, there are 7 liquid channels evenly distributed, and the inner diameter of each liquid channel ...

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Abstract

The invention provides a hydro-treating method of reformate. The method comprises the following step: under a liquid-phase hydro-treating condition, enabling reformate and a catalyst with catalytic hydrogenation effect to contact in a hydrogenation reaction, wherein a hydrogen gas used in the hydro-treating is at least partly from dissolved hydrogen in the reformate. According to the method disclosed by the invention, the reformate obtained by separating in a reforming product separating tank is directly subjected to liquid-phase hydro-treating, so that not only can dissolved hydrogen in the reformate sufficiently be utilized, but also olefin in the reformate can be removed; meanwhile, needs for recycling hydrogen and recycling equipment thereof are eliminated. The reformate obtained by the hydro-treating method disclosed by the invention can have a bromine index lower than 50 mgBr2 / 100g and aromatic hydrocarbon loss amount less than 0.5wt%.

Description

technical field [0001] The invention relates to a method for hydrotreating reformed oil. Background technique [0002] Catalytic reforming is one of the main processes of petroleum refining. It is the process of converting raw oil such as naphtha into reformed oil rich in aromatics under certain temperature, pressure, presence of hydrogen and the presence of a catalyst, and by-product hydrogen. process. The reformed oil obtained after the gas-liquid separation of the mixture obtained by catalytic reforming can be directly used as a blending component of vehicle fuel, and can also undergo an aromatics extraction process to produce chemical raw materials such as benzene, toluene and xylene . [0003] Because reformed oil is not only rich in aromatics and solvent oil fractions, but also contains a small amount of olefins. Therefore, in order to produce qualified aromatics and solvent oil products from reformed oil, olefins must be removed. Moreover, in recent years, with th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G35/06C10G61/00C10G61/02C10G61/08
CPCC10G59/02C10G35/04C10G49/00C10G49/007C10G63/02C10G2300/42B01J4/004B01J2208/00911B01J8/065B01J8/009B01J8/025B01J8/0278B01J8/0457B01J2208/00176B01J2208/00539B01J2208/00557B01J2219/00038B01J2219/0004C10G45/00B01F23/23B01F23/23764B01F25/31421B01D69/04B01J4/00B01J19/24C10G45/02C10G45/22C10G65/08B01J19/2415B01J2219/00103B01J2219/24
Inventor 李华刘建平佘喜春贺晓军李庆华陈庆岭江磊曾志煜刘呈立杨清贫
Owner CHINA PETROLEUM & CHEM CORP
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