Additive for promoting residual oil thermal cracking reaction and preparing method and application thereof

An additive and thermal cracking technology, which is applied in the chemical industry, can solve the problems of little increase in liquid yield and single function, and achieve the effects of prolonging the start-up period, simple raw materials, and easy access to raw materials

Active Publication Date: 2012-07-18
宜兴汉光高新石化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the developed products generally have little increase in liquid yield, single function, and relatively large limitations in product use. Therefore, an additive that can greatly increase liquid yield, slow down device coking, and delay the start-up period has been developed. Has a broad market prospect

Method used

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  • Additive for promoting residual oil thermal cracking reaction and preparing method and application thereof
  • Additive for promoting residual oil thermal cracking reaction and preparing method and application thereof
  • Additive for promoting residual oil thermal cracking reaction and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Pump 38 parts by weight of C9 heavy aromatic solvent oil into the reactor, add 20 parts by weight of thiophosbutane octyl alkyl zinc salt antioxidant preservative, 2 parts by weight of 2,5-dithio-1,3,4- Thiadiazole metal deactivator, 15 parts by weight of polyisobutylene polymaleic anhydride / polyene polyamine-methyl acrylate ashless dispersant, 5 parts by weight of dodecylphenol polyoxyethylene ether emulsifier, warming up to 50 ° C, Stir and dissolve for 15 minutes; then add 15 parts by weight of 2,6-di-tert-butyl-p-cresol antioxidant and 5 parts by weight of hydroquinone polymerization inhibitor into the above solution, keep warm at 55°C, and stir for 35 minutes; cool down to 25°C, discharge and load into barrels.

Embodiment 2

[0025] 38 parts by weight of C10 heavy aromatic hydrocarbon solvent oil are pumped into the reaction kettle, and 20 parts by weight of primary-secondary alkyl zinc salt of sulfur phosphorus, antioxidant preservative, 2 parts by weight of 2,5-dithio-1,3,4-thiazolinol are added successively. Oxadiazole metal deactivator, 15 parts by weight of polyisobutylene succinimide ashless dispersant, 5 parts by weight of octylphenol polyoxyethylene ether emulsifier, heated up to 55 ° C, stirred and dissolved for 12 minutes; then 15 parts by weight of 2 , 6-di-tert-butyl-α-dimethylamino-p-cresol antioxidant and 5 parts by weight of hydroquinone polymerization inhibitor were added to the above solution, kept at 60° C., stirred for 40 minutes; cooled, discharged and loaded into barrels.

Embodiment 3

[0027] 15 parts by weight of C10 heavy aromatic solvent oil are pumped into the reactor, and 25 parts by weight of zinc dialkyldithiophosphate anti-oxidant corrosion inhibitor, 5 parts by weight of trimercapto-s-triazine metal deactivator, 15 parts by weight of poly Isobutylene polymaleic anhydride / polyene polyamine-methyl acrylate ashless dispersant, 10 parts by weight of dodecylphenol polyoxyethylene ether emulsifier, heated to 60 ° C, stirred and dissolved for 10 minutes; then 20 parts by weight of 2, Add 6-di-tert-butyl mixed ester antioxidant and 10 parts by weight of p-benzoquinone polymerization inhibitor to the above solution, keep warm at 50°C, stir for 30 minutes; cool down to 20°C, discharge and load into barrels.

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Abstract

The invention belongs to the field of chemical engineering and relates to an additive for promoting residual oil thermal cracking reaction and a preparing method and application thereof. The additive for promoting residual oil thermal cracking reaction contains the following components by weight: 15-20 parts of ash-free dispersing agents, 2-5 parts of metal deactivator, 10-15 parts of antioxidant, 20-25 parts of antioxidant and corrosion inhibitor, 5-10 parts of polymerization inhibitor, 5-10 parts of emulsion wetting agents and 15-40 parts of solvents. The additive is used for delaying a coking unit, promoting residual oil thermal cracking reaction, improving liquid yield and simultaneously reducing furnace tube coking.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to an additive for promoting thermal cracking reaction of residual oil, a preparation method and application thereof. Background technique [0002] Delayed coking process technology is mature, investment and processing costs are low, and it is a widely used heavy oil processing technology. With the heavy and inferior crude oil resources, the liquid yield of the delayed coking unit decreases, and the coke and dry gas yields increase. If the liquid yield of the delayed coking unit increases by 1%, it will bring huge economic benefits to the refinery benefit. Therefore, the world's major oil companies have been researching and improving the delayed coking process to increase the liquid yield of the unit and reduce the coke and dry gas yield. It is a new technology emerging recently to increase the liquid yield by adding additives in the delayed coking process. Because this technology d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G9/00
Inventor 顾同新
Owner 宜兴汉光高新石化有限公司
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