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Oil slurry scale inhibitor

A technology of antiscalant and oil slurry, which is applied in the petroleum industry, processing hydrocarbon oil, processing equipment corrosion/inhibiting dirt, etc. It can solve the problems of product quality decline, achieve the removal of dirt and greasy, increase circulation, heat exchange and fully responsive effect

Active Publication Date: 2013-10-16
山东京博众诚清洁能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing antiscalants generally contain metal surface passivation agents, which are mainly metal salts. Antiscalants containing these components will affect the ash index of later products, which will reduce the quality of products. Antiscalants that do not contain metal salts appear, so this problem cannot be avoided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An oil slurry scale inhibitor consists of the following components in parts by weight: 20 parts of detergent and dispersant, 1.0 parts of antioxidant, 1.5 parts of polymerization inhibitor, 1.5 parts of emulsifier, 12 parts of surfactant, and 64 parts of cosolvent .

[0027] After mixing the antioxidant, emulsifier, polymerization inhibitor, surfactant, and co-solvent in sequence, it is finally mixed with the cleansing and dispersing agent until it is uniform and transparent.

[0028] The detergent and dispersant is a mixture of polyisobutylene amine and polyether amine, the mass ratio of which is 2:1; the antioxidant is 2,6-di-tert-butyl-p-cresol and N,N-di-sec-butyl-p-cresol A mixture of phenylenediamines, the mass ratio of which is 4:1; the polymerization inhibitor is hydroquinone, the emulsifier is triethanolamine, the surfactant is sorbitan fatty acid ester, and the cosolvent is xylene.

[0029] The addition amount of the oil slurry antiscalant in the oil slurry (...

Embodiment 2

[0031] An oil slurry scale inhibitor consists of the following components in parts by weight: 25 parts of detergent and dispersant, 0.7 part of antioxidant, 1.0 part of polymerization inhibitor, 1.8 parts of emulsifier, 7.5 parts of surfactant, and 64 parts of cosolvent .

[0032] After mixing the antioxidant, emulsifier, polymerization inhibitor, surfactant, and co-solvent in sequence, it is finally mixed with the cleansing and dispersing agent until it is uniform and transparent.

[0033] The detergent and dispersant is a mixture of polyisobutene amine and polyether amine, and its mass ratio is 1:1; the antioxidant is 2,6-di-tert-butyl-p-cresol and N,N-di-sec-butyl-p-cresol A mixture of phenylenediamines, the mass ratio of which is 2:1; the polymerization inhibitor is hydroquinone, the emulsifier is monoethanolamine, the surfactant is sodium dodecylbenzenesulfonate, and the cosolvent is toluene and xylene mixture.

[0034] The addition amount of the oil slurry antiscalant ...

Embodiment 3

[0036] An oil slurry scale inhibitor consists of the following components in parts by weight: 30 parts of detergent and dispersant, 0.5 part of antioxidant, 1.0 part of polymerization inhibitor, 0.5 part of emulsifier, 6 parts of surfactant, and 62 parts of cosolvent .

[0037] After mixing the antioxidant, emulsifier, polymerization inhibitor, surfactant, and co-solvent in sequence, it is finally mixed with the cleansing and dispersing agent until it is uniform and transparent.

[0038] The detergent and dispersant is a mixture of polyisobutene amine and polyether amine, the mass ratio of which is 1:2; the antioxidant is 2,6-di-tert-butyl-p-cresol and N,N-di-sec-butyl-p-cresol The mixture of phenylenediamine, the mass ratio is 1:1; the polymerization inhibitor is p-benzoquinone, the emulsifier is triethanolamine, the surfactant is polysorbate, and the co-solvent is 150# mineral spirits.

[0039] The addition amount of the oil slurry antiscalant in the oil slurry (the composi...

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PUM

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Abstract

The invention provides oil slurry scale inhibitor which is used for inhibiting an oil slurry system from being coked, increasing steam yield of a steam generating system, and reducing the dismounting and cleaning frequency of an oil slurry heat exchanger, as well as a preparation method of the oil slurry scale inhibitor. The scale inhibitor mainly comprises a purification dispersant, an antioxidant, a polymerization inhibitor, an emulsifier, a surface active agent and a co-solvent. The scale inhibitor adopting the proportion can be used for reducing the oil slurry specific gravity, viscosity and external throwing amount, effectively inhibiting the devices including the oil slurry system, a pipeline, a heat exchanger and the like from being coked, and ensuring the safe and stable operation of the device. Meanwhile, the steam generating amount is increased and the yield of light oil is improved.

Description

technical field [0001] The invention relates to a scale inhibitor, in particular to an oil slurry scale inhibitor for preventing fouling and coking of system equipment during catalytic cracking of raw oil. Background technique [0002] In recent years, with the change of catalytic cracking raw oil and the deepening of processing technology, fouling and coking of catalytic cracking oil slurry system equipment have led to a decrease in the thermal efficiency of the oil slurry heat exchanger, affecting the normal production and long-term operation of the unit, and directly Affect the safe operation of the equipment, and in serious cases cause the device to be forced to stop production. Refining workers from different perspectives such as equipment, process, and operation. A series of measures to solve the fouling problem were proposed, such as lowering the temperature at the bottom of the fractionation tower, reducing the residence time, increasing the flow rate of the oil slu...

Claims

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Application Information

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IPC IPC(8): C10G75/04
Inventor 傅龙张红娟侯晓峰牟庆平
Owner 山东京博众诚清洁能源有限公司
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