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Scale inhibitor for raw materials of hydrogenation device and preparation method thereof

A technology of hydrogenation unit and scale inhibitor, which is applied in the fields of processing equipment corrosion/fouling inhibition, petroleum industry, processing hydrocarbon oil, etc., can solve problems such as no effective solution, and achieves reduction of energy loss, simple and easy-to-control process, and high exchange rate. The effect of thermal efficiency

Inactive Publication Date: 2020-07-10
北京乐文科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is currently no effective solution to these fouling situations.

Method used

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  • Scale inhibitor for raw materials of hydrogenation device and preparation method thereof
  • Scale inhibitor for raw materials of hydrogenation device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment provides a preparation method of a scale inhibitor for hydrogenation unit raw materials:

[0028] 8kg N-cyclohexylthiophthalamide, 10kg 2-tert-butyl hydroquinone, 25kg polyalkenyl succinimide, 6kg oleylamine ethyl imidazoline, 10kg monoethanolamine and 41kg 200 # Stir the solvent oil for 30 minutes under the condition of 60r / min to obtain the scale inhibitor for the raw material of the hydrogenation unit.

Embodiment 2

[0030] This embodiment provides a preparation method of a scale inhibitor for hydrogenation unit raw materials:

[0031] 13kg of benzoic acid, 15kg of 4-hydroxy-2,2,6,6-tetramethylpyridine-1-oxyl radical, 30kg of bis-polyisobutylene succinimide, 12kg of trans-oleylamine ethyl imidazoline , 15kg of crude white oil and 15kg of 200# solvent oil were stirred for 40min under the condition of 80r / min to obtain the scale inhibitor of the raw material of the hydrogenation unit.

Embodiment 3

[0033] This embodiment provides a preparation method of a scale inhibitor for hydrogenation unit raw materials:

[0034] The composition of 10.5kg N-nitrosodiphenylamine, 12.5kg 2-tert-butyl hydroquinone and 4-hydroxyl-2,2,6,6-tetramethylpyridine-1-oxyl free radical, 27.5 The composition of kg polyisobutylene succinimide, 9kg cis oleic acid base amine ethyl imidazoline, 12.5kg monoethanolamine and crude white oil, 28kg 200# solvent oil stirred 35min under the condition of 70r / min, namely The antiscalant for hydrogenation unit raw materials.

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Abstract

The invention relates to a scale inhibitor for raw materials of a hydrogenation device and a preparation method thereof. The scale inhibitor is prepared from the following raw materials in percentageby weight: 8 to 13 percent of a scorch retarder, 10 to 15 percent of a polymerization inhibitor, 25 to 30 percent of a dispersing agent, 6 to 12 percent of a corrosion inhibitor, 10 to 15 percent of acleaning agent and the balance of solvent. According to the preparation method, all the raw materials are mixed and stirred. The scale inhibitor can effectively inhibit the formation of coke scale inthe heat exchanger, so that the heat exchanger maintains higher heat exchange efficiency, the energy loss of the equipment is reduced, and the long-period safe operation of the equipment is ensured.The preparation method is simple and easy to control, and large-scale production is facilitated.

Description

technical field [0001] The invention belongs to the field of scale inhibitors, and in particular relates to a scale inhibitor for raw materials of a hydrogenation unit and a preparation method thereof. Background technique [0002] With the increasingly stringent environmental regulations and the need to adjust the structure of oil products, hydrogenation technology has received more and more attention from refineries. However, the processing process of hydrogenation technology is under high temperature and high pressure, and its feed contains sulfur, nitrogen and other impurities. At higher temperatures, these dissolved oxygen, sulfur, nitrogen and other heteroatoms are easy to decompose to generate active free radicals, thereby triggering free radical chains. react to form polymers. Coked diesel oil occupies a certain proportion of raw materials, and coked diesel oil contains a small amount of fine coke powder. These small coke powders have strong adsorption and are easy ...

Claims

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Application Information

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IPC IPC(8): C10G75/04C10G75/02
CPCC10G75/02C10G75/04
Inventor 庄锁良
Owner 北京乐文科技发展有限公司
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