Paraffin hydrogenation post-treatment method

A technology of paraffin and hydrogenation reaction, which is applied in the field of post-treatment of paraffin hydrofining, which can solve the problems of increasing the difficulty of subsequent environmental protection system processing and wasting hydrogen resources, so as to save fresh water consumption, save equipment investment costs, and reduce energy consumption Effect

Active Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, on the one hand, it increases the difficulty of the subsequent environmental protection system, and on the other hand, it also wastes precious hydrogen resources.

Method used

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  • Paraffin hydrogenation post-treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Test device: a small hydrogenation test device equipped with a hydrorefining reaction system, with a figure 1 The small aftertreatment system shown is just that the heating furnace is replaced by electric heating tubes.

[0028] Hydrofining reactor loaded with catalyst FV-10 catalyst (commercial wax hydrofinishing catalyst developed by Fushun Petrochemical Research Institute) 100 mL.

[0029] Test raw materials: melting point 59.5°C, color, Saybolt number +10, light stability No. 6, bromine taste No. 2, oil content 0.28% (mass).

[0030] The purity of hydrogen is 99.99%.

[0031] Reaction conditions: reaction temperature 260°C, reaction pressure 6.0MPa, feed rate 150mL / h, hydrogen wax volume ratio 300.

[0032] Post-processing operating conditions: the pressure of the hot high-pressure separator is 6.0 MPa and the temperature is 220°C; the pressure of the hot low-pressure separator is 0.5 MPa and the temperature is 200°C; the pressure of the first-stage stripping towe...

Embodiment 2

[0035] The test device is the same as in Example 1.

[0036] Hydrofining reactor loaded with catalyst FV-10 catalyst (commercial wax hydrofinishing catalyst developed by Fushun Petrochemical Research Institute) 100 mL.

[0037] Test raw materials: melting point 63.5°C, color, Saybolt number +14, photostability No. 9, bromine taste No. 3, oil content 0.35% (mass).

[0038] The purity of hydrogen is 99.99%.

[0039] Reaction conditions: reaction temperature 270°C, reaction pressure 6.5MPa, feed rate 100mL / h, hydrogen wax volume ratio 320.

[0040] Post-processing conditions: the pressure of the hot high-pressure separator is 6.5 MPa, and the temperature is 220°C; the pressure of the hot low-pressure separator is 0.5 MPa, and the temperature is 200°C; the pressure of the first-stage stripping tower is 0.1MPa, the stripping temperature is 220°C, the hydrogen 50L / h; the pressure of the secondary stripping tower is 0.02 MPa, the stripping temperature is 220°C, and the new hydrogen...

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Abstract

The invention provides a paraffin hydrogenation post-treatment method. According to the method, a post-treatment system for a paraffin hydrorefining reaction product employs a hydrogen stripping tower to replace an original steam stripping tower and a vacuum drying part, and the gas for stripping is changed from steam to hydrogen. Directed at the problems of large water consumption, high energy consumption and the like in the steam stripping tower and the vacuum drying part, the method adopts hydrogen as a stripping gas, not only makes full use of the purge gas of the device itself, the exhaust gas of a separator and other resources, saves the dosage of new hydrogen, but also saves the consumption of fresh water, saves valuable water resources, and reduces the energy consumption in the process of converting water into steam, so that the energy consumption of the whole device is reduced. The post-treatment system involved in the method omits the vacuum drying part, saves the equipment investment cost, and the economic benefit is also very significant.

Description

technical field [0001] The invention relates to a post-treatment method of hydrofining, in particular to a post-treatment method of paraffin hydrofining. Background technique [0002] In the hydrogenation reaction, the reaction materials are contacted with hydrogen by a hydrogenation catalyst to generate hydrogenation reaction products, and then each product of the hydrogenation reaction is separated from the hydrogen through a post-processing step. The commonly used process is fractional distillation. For the liquid-phase hydrofinishing process that has few by-products and does not need to separate the main product again, since the boiling point difference between the product and the by-product gas is very large, it is usually removed by gas stripping to reduce the partial pressure of the by-product. Such devices include paraffin hydrogenation, lubricating oil hydrogenation, etc. [0003] The paraffin hydrogenation process generally includes three parts: raw material pret...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/02
Inventor 袁平飞王士新王咏芳
Owner CHINA PETROLEUM & CHEM CORP
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