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Scale inhibitor for oil refining equipment and preparation method of scale inhibitor

A technology of antiscalant and equipment, which is applied in the field of antiscalant for oil refining equipment and its preparation, can solve the problems of inability to slow down catalytic cracking, low antiscaling rate of antiscalant, small tolerance, etc., and achieves wide use, low cost, Inhibition of the effect of catalytic cracking

Inactive Publication Date: 2017-05-24
JIANGSU JINGWEI TECH INNOVATION CONSULTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a scale inhibitor for oil refining equipment and its preparation method, which solves the technical problems of low scale inhibition rate, high corrosion rate, small tolerance and inability to slow down catalytic cracking of existing scale inhibitors.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1: Weigh according to the ratio of parts by mass: 100 parts of pure water; 60 parts of polyisobutylene succinimide; 1 part of N,N'-disalicylidene-propylenediamine; alkyl salicylic acid 5 parts of calcium; 5 parts of heavy aromatics; 15 parts of hexadecyl dimethyl tertiary amine; 6 parts of 2,2,6,6-tetramethylpiperidine nitroxide; 14 parts of toluene; 8 parts of sodium persulfate ; Hydrogen peroxide 11 parts; Potassium superphosphate 12 parts.

[0024] Step 2: Put calcium alkyl salicylate, toluene, polyisobutylene succinimide, hexadecyl dimethyl tertiary amine and N,N'-disalicylidene-propylenediamine into the thermometer with thermometer , a heating device and a stirring device in a reaction kettle, the temperature was raised to 80° C., and stirred for 60 min at a stirring speed of 90 rpm.

[0025] Step 3: Heat up to 120°C, add potassium superphosphate and remaining raw materials, and stir for 1 hour.

[0026] Wide range of sources of raw materials, used to inhibi...

Embodiment 2

[0028] Step 1: Weigh according to the ratio of parts by mass: 100 parts of pure water; 80 parts of polyisobutylene succinimide; 20 parts of N,N'-disalicylidene-propylenediamine; alkyl salicylic acid 25 parts of calcium; 25 parts of heavy aromatics; 35 parts of cetyl dimethyl tertiary amine; 10 parts of 2,2,6,6-tetramethylpiperidine nitroxide; 18 parts of toluene; 12 parts of sodium persulfate ; Hydrogen peroxide 15 parts; Potassium superphosphate 16 parts.

[0029] Step 2: Put calcium alkyl salicylate, toluene, polyisobutylene succinimide, hexadecyl dimethyl tertiary amine and N,N'-disalicylidene-propylenediamine into the thermometer with thermometer , a heating device and a stirring device in a reaction kettle, the temperature was raised to 100° C., stirred for 100 min, and the stirring speed was 110 rpm.

[0030] Step 3: Heat up to 160°C, add potassium superphosphate and remaining raw materials, and stir for 3 hours.

[0031] Wide range of sources of raw materials, used to...

Embodiment 3

[0033] Step 1: Weigh according to the ratio of parts by mass: 100 parts of pure water; 65-75 parts of polyisobutylene succinimide; 5 parts of N,N'-disalicylidene-propylenediamine; alkyl water 10 parts of calcium sylate; 10 parts of heavy aromatics; 20 parts of cetyl dimethyl tertiary amine; 7 parts of 2,2,6,6-tetramethylpiperidine nitroxide; 15 parts of toluene; sodium persulfate 9 parts; hydrogen peroxide 12 parts; potassium superphosphate 13 parts.

[0034]Step 2: Put calcium alkyl salicylate, toluene, polyisobutylene succinimide, hexadecyl dimethyl tertiary amine and N,N'-disalicylidene-propylenediamine into the thermometer with thermometer , a heating device and a stirring device in a reaction kettle, the temperature was raised to 80° C., and stirred for 60 min at a stirring speed of 90 rpm.

[0035] Step 3: Heat up to 120°C, add potassium superphosphate and remaining raw materials, and stir for 1 hour.

[0036] Wide range of sources of raw materials, used to inhibit the...

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Abstract

The invention discloses a scale inhibitor for oil refining equipment. The scale inhibitor is prepared from the following raw materials: purified water, polyisobutylene succinimide, N,N'-disalicylidene-promethylene diamine, calcium alkyl salicylate, heavy aromatics, hexadecyl dimethyl amine, 2,2,6,6-tetramethylpiperidinooxyl, toluene, sodium persulfate, hydrogen peroxide and potassium superphosphate. The scale inhibitor is used for inhibiting coking and scale deposition of various devices and equipment in petroleum refining and petrochemical processes, particularly for coking and scale deposition of hydrogenation process equipment; coking and scale deposition of heat exchangers and steam generators for catalytic cracking, delayed coking and crude oil distillation processes are inhibited; and a high scale inhibition rate is achieved with the filling amount of 80 to 100 [mu]m / g in a crude oil heat exchanger, a reactor and a heating furnace, and each component synergistically acts to achieve the carbon steel corrosion rate of 0.001 to 0.003 [mu]m*a<-1> and the calcium carbonate scale inhibition rate of 85 to 95 percent.

Description

technical field [0001] The invention relates to an environment-friendly material, in particular to a scale inhibitor for oil refining equipment and a preparation method thereof. Background technique [0002] Scale inhibitor: It is a class of agents that can disperse insoluble inorganic salts in water, prevent or interfere with the precipitation and scaling of insoluble inorganic salts on metal surfaces, and maintain good heat transfer effects on metal equipment . [0003] From the perspective of the mechanism of action, the role of scale inhibitors can be divided into three parts: chelation, dispersion and lattice distortion. And in the laboratory evaluation test, the dispersion effect is the remedial measure of the chelation effect, and the lattice distortion effect is the remedial measure of the dispersion effect. [0004] The anti-corrosion and anti-scaling agent for cold-changing equipment is formulated with epoxy resin and specific amino resin as the base material, ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G75/04
CPCC10G75/04
Inventor 王静
Owner JIANGSU JINGWEI TECH INNOVATION CONSULTING CO LTD
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