Integrated hydrogenation method for producing clean diesel

A diesel and clean technology, applied in hydrotreating process, petroleum industry, processing of hydrocarbon oil, etc., can solve the problems of high hydrogen consumption and high processing cost, and achieve the effect of reducing gas-liquid flow, good quality and simple process

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of this invention is to provide an integrated hydrogenation method for the production of clean diesel oil on the basis of the prior art. The problem of large consumption and high processing cost

Method used

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  • Integrated hydrogenation method for producing clean diesel
  • Integrated hydrogenation method for producing clean diesel
  • Integrated hydrogenation method for producing clean diesel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The process method of the present invention is used to process high-sulfur and high cetane number straight-run diesel fuel A and low cetane number catalytic diesel raw material A on a medium-sized test device. The first reactor is filled with RG-1 / RS-1000 catalyst with a filling volume ratio of 15:140. The second reactor is filled with RG-1 / RS-1000 / RIC-2 catalyst, and the filling volume ratio is 20:125:65.

[0043] Table 1 Properties of raw materials for high-sulfur, high-cetane number direct firewood and low-cetane number fuelwood

[0044] Analysis Project

Zhichai raw material A

Firewood raw material A

Density (20℃) / (g / cm 3 )

0.8356

0.9625

Sulfur content / (μg / g)

11000

6200

Nitrogen content / (μg / g)

97

252

Freezing point / ℃

-12

-34

Measured cetane number

54.8

19.3

Distillation range (ASTM D-86) / ℃

IBP / 5%

180 / 214

160 / 211

10％ / 20％

228 / 246

222 / 235

30％ / 50％

260 / 283

245 / 262

70％ / 80％

311 / 326

290 / 304

90% / FBP

347 / 376

3...

Embodiment 2

[0050] The process method of the present invention is used to process coking diesel B with high sulfur content and higher cetane number and fuelwood B with low cetane number on a medium-sized hydrogenation test device. The first reactor is filled with RG-1 / RS-1000 catalyst with a filling volume ratio of 15:140. The second reactor is filled with RG-1 / RS-1000 / RIC-2 catalyst, and the filling volume ratio is 20:125:65.

[0051] Table 4 High cetane number coke firewood and low cetane number firewood raw materials properties

[0052] Analysis Project

Coke wood raw material B

Firewood raw material B

Density (20℃) / (g / cm 3 )

0.8394

0.8808

Sulfur content / (μg / g)

625

1100

Nitrogen content / (μg / g)

1358

512

Freezing point / ℃

-10

-16

Measured cetane number

44.1

33.0

Distillation range (ASTM D-86) / ℃

IBP / 5%

190 / 206

189 / 211

10％ / 20％

215 / 226

225 / 242

30％ / 50％

235 / 253

259 / 289

70％ / 80％

288 / 306

321 / 337

90% / FBP

328 / 361

353 / 372

[0053] Ta...

Embodiment 3

[0058] The process method of the present invention is used to process high-sulfur high-cetane number straight-run diesel oil C and low cetane number catalytic diesel raw material C on a medium-sized hydrogenation test device. The first reactor is filled with RG-1 / RS-1000 catalyst with a filling volume ratio of 15:140. The second reactor is filled with RG-1 / RS-1000 / RIC-2 catalyst, and the filling volume ratio is 20:125:65.

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Abstract

The invention discloses an integrated hydrogenation method for producing clean diesel. The method comprises the following steps of: performing hydrogenation refining on a diesel material with high cetane number in a first hydrogenation reaction area; separating in a thermal high-pressure separator, mixing the separated hydrogen-rich gas and a diesel material with low cetane number, allowing the mixture to enter a second hydrogenation reaction area, performing hydrodesulfurization, hydrodenitrogeneration, aromatics saturation and cycloalkane opening reaction under the action of hydrogenation refining and a hydrocracking catalyst, mixing a liquid-phase material flow obtained by the thermal high-pressure separator and a liquid material in the second hydrogenation reaction area, and allowing the mixture to enter a fractionation system; and finally obtaining the clean diesel and a small amount of naphtha with high aromatic hydrocarbon. By the method, a clean diesel product having the sulfur content of less than 10ppm and the cetane number of more than 51 can be produced. On one set of device, two technological processes are implemented, the flow is relatively simple, the hydrogen utilization rate is high, device investment and operating cost are low, and the process selectivity and economic efficiency are high.

Description

Technical field [0001] The invention relates to a method for refining hydrocarbon oil in the presence of hydrogen, in particular to an integrated hydrogenation method for producing clean diesel. Background technique [0002] In recent years, the quality requirements for diesel products have become higher and higher. New specifications of clean diesel products require low sulfur content, nitrogen content and other impurities content, while the cetane number is generally required to be no less than 49-51. In refineries, the blending components in the diesel pool are mainly composed of straight-run diesel, catalytically cracked diesel, coking diesel, and hydrocracked diesel. The properties of different diesel fractions vary greatly. In general, straight-run diesel and coking diesel have low density and high cetane number, and it is expected that low-sulfur, high-cetane number clean diesel products can be produced through hydrorefining. The catalytic diesel produced by the catalyt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
Inventor 蒋东红胡志海张毓莹任亮龙湘云辛靖
Owner CHINA PETROLEUM & CHEM CORP
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