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Scale inhibitor for catalytic cracking slurry system

A technology for catalytic cracking oil slurry and scale inhibitor, which is applied in the petroleum industry, hydrocarbon oil treatment, and treatment equipment corrosion/fouling inhibition, etc. Prolonged operation period and good anti-scaling effect

Inactive Publication Date: 2011-02-16
吉化集团吉林市星云化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have limitations and fail to fundamentally inhibit the generation of scaling.

Method used

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  • Scale inhibitor for catalytic cracking slurry system

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Experimental program
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Effect test

Embodiment Construction

[0030] The present invention will be further described below in conjunction with specific embodiments.

[0031] Preparation

[0032] The first step is to put the solvent in the container, then start the agitator, raise the temperature of the solvent to 20°C-55°C, and add certain antioxidants and polymerization inhibitors in proportion to complete dissolution under stirring.

[0033] In the second step, add detergent and dispersant, metal deactivator and dispersant in proportion to the prepared solution in sequence, control the temperature to 40°C to 50°C, keep it constant, stir for 0.5 to 1 hour, and cool to room temperature to obtain This antiscalant product.

[0034] According to the above method, the scale inhibitor product examples 1-16 were prepared, and the results are listed in Table 1.

[0035] (2) Evaluation method

[0036] The evaluation of the antiscalant effect of the antiscalant in the oil slurry system is carried out in the laboratory, and the method is as fol...

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Abstract

The invention discloses a scale inhibitor, in particular a scale inhibitor for a catalytic cracking slurry system, which is characterized by being a composition consisting of 2 to 6 weight percent of antioxidant, 2 to 18 percent of polymerization inhibitor, 10 to 25 percent of detergent dispersant, 1 to 5 percent of metal passivator, 20 to 45 percent of dispersant and 16 to 40 percent of solvent. The scale inhibitor for the catalytic cracking slurry system has high pertinency and desirable scale inhibiting effect, and can help to solve the sintering and scaling problems of the slurry system and prolong the operation period of the device. The dosage of scale inhibitor is small, so the scale inhibitor is economic. The scale inhibitor can solve the scaling problem of a catalytic cracking device effectively and is the first scale inhibitor for the catalytic cracking slurry system. Thus, the scale inhibitor has high promotion and application values and a very good market prospect.

Description

technical field [0001] The invention relates to a scale inhibitor, in particular to a scale inhibitor used in catalytic cracking oil slurry system. Background technique [0002] In the process of oil processing, the catalytic cracking unit is one of the most profitable units in the refinery. As the quality of crude oil becomes heavier and worse, the oil processing conditions become more harsh, and the fouling problem of oil processing equipment and pipelines becomes increasingly prominent. As the main secondary processing unit, the raw materials used for catalysis have become more and more complex, and the content of aromatics and polycyclic aromatics in oil slurry has increased, resulting in serious coking and fouling of catalytic cracking units blending heavy oil. Cleaning of heat exchangers Frequently, the operating cycle of the unit is significantly shortened, the energy consumption increases, the processing capacity decreases, the light oil yield decreases, and the eco...

Claims

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Application Information

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IPC IPC(8): C10G75/04
Inventor 于广臣刘淑杰刘淑艳
Owner 吉化集团吉林市星云化工有限公司
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