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Anti-tartar detersive for quenching oil column of ethylene unit

A technology for ethylene plant and quenching oil, which is applied in the treatment of hydrocarbon oil, petroleum industry, and the corrosion/fouling inhibition of treatment equipment. The effect of generating, inhibiting aggregation, and avoiding abnormal parking

Active Publication Date: 2009-06-03
浙江杭化科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the polymer and coke powder accumulate thicker and thicker until the channel is blocked, which leads to an increase in the pressure difference of the tower, a decrease in the processing capacity, and affects the operation cycle of the tower.
[0006] Judging from the existing literature, there is currently no anti-scaling detergent for quenching oil towers at home and abroad, especially for the working conditions where scales have been formed on the surface of the packing, there is currently no suitable additive for online descaling. It can only be stopped to replace the filler, so the development of anti-fouling detergent for the quenching oil tower of ethylene production unit is imminent

Method used

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  • Anti-tartar detersive for quenching oil column of ethylene unit
  • Anti-tartar detersive for quenching oil column of ethylene unit
  • Anti-tartar detersive for quenching oil column of ethylene unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]Add 100g of 2,6 di-tert-butyl-p-cresol, 200g of triphenyl phosphite, 220g of N-ethyl-N-hydroxyethylaniline, 60g of dienyl succinimide, and 420g of kerosene into the container, and heat After stirring and mixing evenly, cool and filter to obtain the anti-scaling detergent, code-named HK-2.

[0048] The anti-scaling detergent code-named HK-2 was evaluated for its anti-scaling effect and cleaning effect.

[0049] laboratory evaluation

[0050] (1) Anti-scaling effect evaluation method of HK-2 anti-scaling detergent:

[0051] The evaluation method of anti-scaling effect of anti-scaling agent is based on the principle of heat transfer. It uses a heat pipe to allow the medium to flow continuously in the heat pipe. At the beginning, because the medium has not scaled on the heat pipe, the total heat transfer resistance is only the heat transfer resistance of the heat pipe wall; as the running time increases, Scale is continuously deposited on the surface of the heat pipe, for...

Embodiment 2

[0069] 170g 2-tert-butyl-4,6-dimethylphenol, 150g triisooctyl phosphite, 210g 2,4-dimethylaniline, 50g polyenyl succinimide, 420g toluene, other same implementation example 1.

Embodiment 3

[0070] Example 3 N-Methyl-N-benzylaniline.

[0071] 150g 2,6-di-tert-butyl-4-n-butylphenol, 120g triphenyl phosphate, 240g N-methyl-N-benzylaniline, 80g low nitrogen polyisobutylene succinimide, 410g toluene, others With embodiment 1.

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Abstract

The invention relates to an anti-tartar detersive for a quenching oil column of an ethylene unit. In order to solve the problems of the anti-tartar and cleaning of the quenching oil column, the invention provides the anti-tartar detersive for the quenching oil column. The anti-tartar detersive can inhibit the generation of dirt from the source; meanwhile, the detersive can also eliminate the generated dirt in the quenching oil column on line, thus providing necessary conditions for the long period operation of the ethylene unit. The anti-tartar detersive for the quenching oil column of the ethylene unit of the invention is characterized in that according to weight percentage, phenolic antioxidant is 1-18%, phosphorus metal ion deactivator is 8-20%, amine inhibitive substance is 5-35%, thiazolinyl succinimide dispersant is 2-18%, solvent is 30-70%; the substances are put into a container for heating, stirred and mixed evenly and cooled to room temperature, and then filtered to obtain the product.

Description

technical field [0001] The invention relates to an anti-scaling detergent in petroleum industrial equipment, in particular to an anti-scaling detergent for a quenching oil tower of an ethylene plant. Background technique [0002] During the production of ethylene, the unsaturated components in the material are prone to polymerization, and the polymer deposits and adheres to the surface of equipment or pipelines to form scale, which affects the normal operation and long-term operation of the device. The easiest and most effective way to solve this problem is to add anti-scaling detergent to the related system. [0003] Most of the first generation antiscalants are single polymerization inhibitors or mixed polymerization inhibitors, which are mainly used to inhibit the polymerization of olefins. As US 6096188 discloses an antiscalant for quenching oil towers, the antiscalant consists of alkane One or a mixture of two or more of alkyl diphenols, alkyl biphenols, aromatic amine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G75/02C07C7/20C07C11/04C09K15/30
Inventor 吴海燕林向阳李有金徐建良熊钢华
Owner 浙江杭化科技股份有限公司
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