CN111139141A

CN111139141A - Cleaning agent for heavy oil dirt on inner wall of petrochemical pipeline and preparation method thereof

Info

Publication number: CN111139141A
Application number: CN201911362721.6A
Authority: CN
Inventors: 洪姝
Original assignee: Anhui Micro Technology Co Ltd
Current assignee: Anhui Micro Technology Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-05-12

Abstract

The invention provides a cleaning agent for heavy oil dirt on the inner wall of a petrochemical pipeline and a preparation method thereof, which relate to the field of cleaning agents and comprise the following components in percentage by weight: 2-10% of polyether amine, 1-4% of long-chain alkyl polyether co-modified silicone oil, 0.1-0.5% of ethylene glycol monobutyl ether, 2-5% of coconut oil fatty acid diethanolamide, 4-12% of alkyl glycoside polyoxyethylene ether, 0.5-1.2% of fatty acid methyl ester ethoxylate, 0.01-0.1% of dibutyl hydroxy toluene, 0.01-0.1% of methyl tert-butyl ether, 5-10% of dimethyl carbonate, 1-2% of polymeric isomeric alcohol polyoxyethylene butenyl amide, 2-4% of triethanolamine, 1-3% of sodium metasilicate, 4-8% of isopropanol, 0.01-0.05% of scale and corrosion inhibitor, 0.5-1% of stabilizer and the balance of solvent oil, and the prepared cleaning agent for heavy oil scale on the inner wall of a petrochemical pipeline has stable property, good removal effect on the heavy oil scale and accords with the development trend of the pipeline cleaning agent industry, has excellent application prospect.

Description

Cleaning agent for heavy oil dirt on inner wall of petrochemical pipeline and preparation method thereof

Technical Field

The invention relates to the field of cleaning agents, and particularly relates to a cleaning agent for heavy oil dirt on the inner wall of a petrochemical pipeline and a preparation method thereof.

Background

Petrochemical industry, petrochemical for short. Generally refers to the chemical industry that uses petroleum and natural gas as raw materials. The range is wide and the products are many. Crude oil is cracked, reformed, and separated to provide base feedstocks such as ethylene, propylene, butenes, butadiene, benzene, toluene, xylenes, naphthalene, and the like. From these base raw materials, various basic organic raw materials such as methanol, formaldehyde, ethanol, acetaldehyde, acetic acid, isopropanol, acetone, phenol, etc. can be produced.

Petrochemical industry is an important component of chemical industry, plays an important role in the development of national economy, and is one of the prop industry departments in China. Petrochemical refers to the processing industry that produces petroleum products and petrochemical products from petroleum and natural gas. Petroleum products are also called oil products, and mainly comprise various fuel oils (gasoline, kerosene, diesel oil and the like), lubricating oil, liquefied petroleum gas, petroleum coke, paraffin, asphalt and the like. The process for producing these products is often referred to as petroleum refining, or simply refining. The petrochemical product is obtained by further chemically processing raw oil provided by an oil refining process. The first step in the production of petrochemical products is the cracking of raw oil and gas (such as propane, gasoline, diesel, etc.) to produce basic chemical materials, typically ethylene, propylene, butadiene, benzene, toluene, xylene. The second step is to produce various organic chemical materials (about 200 kinds) and synthetic materials (plastics, synthetic fibers, synthetic rubbers) from basic chemical materials. The production of these two-step products falls within the scope of petrochemical industry. The organic chemical raw materials can be processed continuously to prepare more chemical products, which are not in the range of petrochemical industry in habit. In some data, the synthesis of ammonia and urea from natural gas, light gasoline and heavy oil, and even the preparation of nitric acid, are also included in petrochemical industry.

The petroleum may have some chemical and physical changes during the transportation process in the pipeline, resulting in the production of deposits, which are deposited or accumulated on the inner surface of the pipeline, i.e. scale formation, which is generally a combination of organic and inorganic substances, and the scale formation of the pipeline is easy to cause diameter reduction and blockage of the pipeline, and also causes corrosion perforation, causing destructive accidents.

People generally adopt the following three methods to clean heavy oil dirt on the inner wall of a chemical pipeline:

(1) the pipeline is disassembled and then is manually brushed or soaked by strong alkali liquor, which causes metal corrosion and damages the inherent precise matching of parts, and the cleaning cycle is long, the cost is high, and the pipeline is not good for the health of repairmen;

(2) the cleaning is carried out circularly by external equipment, and the defects are high cost, special cleaning equipment is needed and incomplete cleaning;

(3) the cleaning agent is utilized to carry out non-dismantling cleaning, most of products on the market are easy to cause metal corrosion due to the existence of water and strong alkaline substances, and the cleaning agent is poor in stability and easy to stratify due to the existence of water and is not suitable for cleaning petrochemical pipelines.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a cleaning agent for heavy oil dirt on the inner wall of a petrochemical pipeline and a preparation method thereof.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

the heavy oil dirt cleaning agent for the inner wall of the petrochemical pipeline comprises the following components in percentage by weight:

2-10% of polyether amine, 1-4% of long-chain alkyl polyether co-modified silicone oil, 0.1-0.5% of ethylene glycol monobutyl ether, 2-5% of coconut oil fatty acid diethanolamide, 4-12% of alkyl glycoside polyoxyethylene ether, 0.5-1.2% of fatty acid methyl ester ethoxylate, 0.01-0.1% of dibutyl hydroxy toluene, 0.01-0.1% of methyl tert-butyl ether, 5-10% of dimethyl carbonate, 1-2% of polymeric isomeric alcohol polyoxyethylene butenyl amide, 2-4% of triethanolamine, 1-3% of sodium metasilicate, 4-8% of isopropanol, 0.01-0.05% of scale and corrosion inhibitor, 0.5-1% of stabilizer and the balance of solvent oil.

Further, the paint comprises the following components in percentage by weight:

8% of polyether amine, 1% of long-chain alkyl polyether co-modified silicone oil, 0.2% of ethylene glycol monobutyl ether, 3% of coconut oil fatty acid diethanolamide, 5% of alkyl glycoside polyoxyethylene ether, 0.6% of fatty acid methyl ester ethoxylate, 0.03% of dibutyl hydroxy toluene, 0.06% of methyl tert-butyl ether, 10% of dimethyl carbonate, 1.2% of poly-isomerization alcohol polyoxyethylene butenyl amide, 4% of triethanolamine, 1% of sodium metasilicate, 6% of isopropanol, 0.01% of scale and corrosion inhibitor, 0.8% of stabilizer and the balance of solvent oil.

Further, the paint comprises the following components in percentage by weight:

8% of polyether amine, 1.5% of long-chain alkyl polyether co-modified silicone oil, 0.12% of ethylene glycol monobutyl ether, 5% of coconut oil fatty acid diethanolamide, 5.5% of alkyl glycoside polyoxyethylene ether, 1% of fatty acid methyl ester ethoxylate, 0.02% of dibutyl hydroxy toluene, 0.05% of methyl tert-butyl ether, 8% of dimethyl carbonate, 1% of polymerized isomeric alcohol polyoxyethylene butenyl amide, 2% of triethanolamine, 2% of sodium metasilicate, 8% of isopropanol, 0.02% of scale and corrosion inhibitor, 0.8% of stabilizer and the balance of solvent oil.

Further, the preparation method of the long-chain alkyl polyether co-modified silicone oil comprises the following steps:

adding hydrogen-containing silicone oil, allyl epoxy polyether, hexadecene and isopropanol into a reactor, slowly heating to 70-75 ℃, adding a chloroplatinic acid catalyst, stirring for reacting for 5-10min, heating to reflux for reacting for 3-5h, distilling under reduced pressure to remove low-boiling-point substances, cooling to obtain an intermediate, adding the intermediate and amino-terminated polyether into the reactor, stirring, heating to 80-90 ℃, reacting for 5-10h, and distilling under reduced pressure to remove the low-boiling-point substances.

Further, the weight ratio of the hydrogen-containing silicone oil to the allyl epoxy polyether to the hexadecene is 20-25: 1: 3.

furthermore, the scale and corrosion inhibitor is formed by mixing phosphono carboxylic acid copolymer and barium petroleum sulfonate according to a certain weight ratio.

Further, the scale and corrosion inhibitor is a phosphono carboxylic acid copolymer and barium petroleum sulfonate according to a weight ratio of 1-5: 1 are mixed.

Further, the stabilizer is prepared by mixing any one of calcium stearate, aluminum stearate, potassium stearate, zinc stearate, calcium ricinoleate and zinc ricinoleate with the epoxidized soybean oil.

Further, the solvent oil is 200# solvent oil or d40 solvent oil.

The preparation method of the heavy oil dirt cleaning agent for the inner wall of the petrochemical pipeline comprises the following steps:

adding polyether amine, long-chain alkyl polyether co-modified silicone oil, ethylene glycol monobutyl ether, coconut oil fatty acid diethanolamide, alkyl glycoside polyoxyethylene ether, fatty acid methyl ester ethoxylate, dibutyl hydroxy toluene, methyl tert-butyl ether, dimethyl carbonate and polymerized isomeric alcohol polyoxyethylene butenyl amide into solvent oil, stirring at the speed of 600-800r/min for 5-10min, heating to 50-60 ℃, continuing stirring for 20-40min, cooling to room temperature, adding triethanolamine, sodium metasilicate, isopropanol, scale and corrosion inhibitor and stabilizer, adjusting the rotation speed to 1200-1400r/min, and stirring for 20-40 min.

(III) advantageous effects

The invention provides a cleaning agent for heavy oil dirt on the inner wall of a petrochemical pipeline and a preparation method thereof, and the cleaning agent has the following beneficial effects:

the polyether amine has excellent cleaning, dispersing, demulsifying, corrosion inhibiting and antioxidant performance, can be used for cleaning oil stains on the inner wall of a petrochemical pipeline, not only does not generate deposits, but also can inhibit the generation of the deposits, the oil stain dissolving component is a main component of the cleaning agent, the invention selects the compound of dimethyl carbonate, ethylene glycol monobutyl ether and isopropanol with stronger cleaning power to promote the dissolution of the oil stains, the ethylene glycol monobutyl ether has flexible ether bond groups and can permeate into the oil stains to dissolve the oil stains from the inside, the dimethyl carbonate has excellent dissolving performance, large surface tension and low viscosity, has excellent wrapping performance on the oil stains, and the introduction of long-chain alkyl in the long-chain alkyl polyether co-modified silicone oil endows the polysiloxane with better lubricating property, demolding property, defoaming property and antifouling property, can form a film on the inner wall of the petrochemical pipeline to avoid the attachment of subsequent deposits after cleaning, the coconut oil fatty acid diethanolamide and alkyl glycoside polyoxyethylene ether serving as a compounded surfactant are strong in cleaning property, small in foaming property and high in stability, can permeate into heavy oil dirt and compete for metal with the heavy oil dirt, so that the binding force of the heavy oil dirt and the metal is weakened, and the heavy oil dirt is accelerated to fall off.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

8% of polyether amine, 1% of long-chain alkyl polyether co-modified silicone oil, 0.2% of ethylene glycol monobutyl ether, 3% of coconut oil fatty acid diethanolamide, 5% of alkyl glycoside polyoxyethylene ether, 0.6% of fatty acid methyl ester ethoxylate, 0.03% of dibutyl hydroxy toluene, 0.06% of methyl tert-butyl ether, 10% of dimethyl carbonate, 1.2% of poly (isomeric alcohol) polyoxyethylene butenyl amide, 4% of triethanolamine, 1% of sodium metasilicate, 6% of isopropanol, a phosphono carboxylic acid copolymer and barium petroleum sulfonate in a weight ratio of 1: 1, 0.01 percent of scale and corrosion inhibitor, 0.8 percent of stabilizer which is formed by mixing calcium stearate and epoxidized soybean oil, and the balance of 200# solvent oil.

The preparation method of the long-chain alkyl polyether co-modified silicone oil comprises the following steps:

adding hydrogen-containing silicone oil, allyl epoxy polyether, hexadecene and isopropanol into a reactor, wherein the weight ratio of the hydrogen-containing silicone oil to the allyl epoxy polyether to the hexadecene is 25: 1: and 3, slowly heating to 70 ℃, adding a chloroplatinic acid catalyst, stirring for reacting for 8min, heating to reflux for reacting for 4h, distilling under reduced pressure to remove low-boiling-point substances, cooling to obtain an intermediate, adding the intermediate and the amino-terminated polyether into a reactor, stirring, heating to 90 ℃, reacting for 10h, and distilling under reduced pressure to remove the low-boiling-point substances.

adding polyether amine, long-chain alkyl polyether co-modified silicone oil, ethylene glycol monobutyl ether, coconut oil fatty acid diethanolamide, alkyl glycoside polyoxyethylene ether, fatty acid methyl ester ethoxylate, dibutyl hydroxy toluene, methyl tert-butyl ether, dimethyl carbonate and polymeric isomeric alcohol polyoxyethylene butenyl amide into solvent oil, stirring at the speed of 600r/min for 10min, heating to 55 ℃, continuing stirring for 30min, cooling to room temperature, adding triethanolamine, sodium metasilicate, isopropanol, a scale and corrosion inhibitor and a stabilizer, adjusting the rotating speed to 1200r/min, and stirring for 25 min.

Example 2:

8% of polyether amine, 1.5% of long-chain alkyl polyether co-modified silicone oil, 0.12% of ethylene glycol monobutyl ether, 5% of coconut oil fatty acid diethanolamide, 5.5% of alkyl glycoside polyoxyethylene ether, 1% of fatty acid methyl ester ethoxylate, 0.02% of dibutyl hydroxy toluene, 0.05% of methyl tert-butyl ether, 8% of dimethyl carbonate, 1% of polymerized isomeric alcohol polyoxyethylene butenyl amide, 2% of triethanolamine, 2% of sodium metasilicate, 8% of isopropanol, a phosphono carboxylic acid copolymer and barium petroleum sulfonate in a weight ratio of 2: 1, 0.02 percent of scale and corrosion inhibitor, 0.8 percent of stabilizer formed by mixing aluminum stearate and epoxidized soybean oil, and the balance of d40 solvent oil.

adding hydrogen-containing silicone oil, allyl epoxy polyether, hexadecene and isopropanol into a reactor, wherein the weight ratio of the hydrogen-containing silicone oil to the allyl epoxy polyether to the hexadecene is 20: 1: and 3, slowly heating to 70 ℃, adding a chloroplatinic acid catalyst, stirring for reaction for 5min, heating to reflux for reaction for 4h, distilling under reduced pressure to remove low-boiling-point substances, cooling to obtain an intermediate, adding the intermediate and the amino-terminated polyether into a reactor, stirring, heating to 85 ℃, reacting for 10h, and distilling under reduced pressure to remove the low-boiling-point substances.

adding polyether amine, long-chain alkyl polyether co-modified silicone oil, ethylene glycol monobutyl ether, coconut oil fatty acid diethanolamide, alkyl glycoside polyoxyethylene ether, fatty acid methyl ester ethoxylate, dibutyl hydroxy toluene, methyl tert-butyl ether, dimethyl carbonate and polymeric isomeric alcohol polyoxyethylene butenyl amide into solvent oil, stirring at the speed of 800r/min for 6min, heating to 50 ℃, continuing stirring for 30min, cooling to room temperature, adding triethanolamine, sodium metasilicate, isopropanol, a scale and corrosion inhibitor and a stabilizer, adjusting the rotating speed to 1200r/min, and stirring for 35 min.

Example 3:

2% of polyether amine, 3% of long-chain alkyl polyether co-modified silicone oil, 0.1% of ethylene glycol monobutyl ether, 4.5% of coconut oil fatty acid diethanolamide, 8% of alkyl glycoside polyoxyethylene ether, 1.2% of fatty acid methyl ester ethoxylate, 0.08% of dibutyl hydroxy toluene, 0.05% of methyl tert-butyl ether, 10% of dimethyl carbonate, 2% of polymerized isomeric alcohol polyoxyethylene butenyl amide, 3% of triethanolamine, 1% of sodium metasilicate, 5% of isopropanol, a phosphono carboxylic acid copolymer and barium petroleum sulfonate in a weight ratio of 2: 1, 0.05 percent of scale and corrosion inhibitor, 0.6 percent of stabilizer formed by mixing zinc ricinoleate and epoxidized soybean oil, and the balance of d40 solvent oil.

adding hydrogen-containing silicone oil, allyl epoxy polyether, hexadecene and isopropanol into a reactor, wherein the weight ratio of the hydrogen-containing silicone oil to the allyl epoxy polyether to the hexadecene is 20: 1: and 3, slowly heating to 70 ℃, adding a chloroplatinic acid catalyst, stirring for reaction for 5min, heating to reflux for reaction for 4h, distilling under reduced pressure to remove low-boiling-point substances, cooling to obtain an intermediate, adding the intermediate and the amino-terminated polyether into a reactor, stirring, heating to 90 ℃, reacting for 6h, and distilling under reduced pressure to remove the low-boiling-point substances.

adding polyether amine, long-chain alkyl polyether co-modified silicone oil, ethylene glycol monobutyl ether, coconut oil fatty acid diethanolamide, alkyl glycoside polyoxyethylene ether, fatty acid methyl ester ethoxylate, dibutyl hydroxy toluene, methyl tert-butyl ether, dimethyl carbonate and polymeric isomeric alcohol polyoxyethylene butenyl amide into solvent oil, stirring at the speed of 800r/min for 8min, heating to 50 ℃, continuing stirring for 30min, cooling to room temperature, adding triethanolamine, sodium metasilicate, isopropanol, a scale and corrosion inhibitor and a stabilizer, adjusting the rotating speed to 1400r/min, and stirring for 30 min.

Example 4:

8% of polyether amine, 2% of long-chain alkyl polyether co-modified silicone oil, 0.4% of ethylene glycol monobutyl ether, 3% of coconut oil fatty acid diethanolamide, 10% of alkyl glycoside polyoxyethylene ether, 1% of fatty acid methyl ester ethoxylate, 0.02% of dibutyl hydroxy toluene, 0.1% of methyl tert-butyl ether, 8% of dimethyl carbonate, 2% of poly (isomeric alcohol) polyoxyethylene butenyl amide, 4% of triethanolamine, 1% of sodium metasilicate, 5% of isopropanol, a phosphonocarboxylic acid copolymer and barium petroleum sulfonate in a weight ratio of 2: 1, 0.04 percent of scale and corrosion inhibitor, 0.6 percent of stabilizer formed by mixing zinc ricinoleate and epoxidized soybean oil, and the balance of 200# solvent oil.

adding hydrogen-containing silicone oil, allyl epoxy polyether, hexadecene and isopropanol into a reactor, wherein the weight ratio of the hydrogen-containing silicone oil to the allyl epoxy polyether to the hexadecene is 20: 1: and 3, slowly heating to 70 ℃, adding a chloroplatinic acid catalyst, stirring for reaction for 5min, heating to reflux for reaction for 4h, distilling under reduced pressure to remove low-boiling-point substances, cooling to obtain an intermediate, adding the intermediate and the amino-terminated polyether into a reactor, stirring, heating to 90 ℃, reacting for 8h, and distilling under reduced pressure to remove the low-boiling-point substances.

adding polyether amine, long-chain alkyl polyether co-modified silicone oil, ethylene glycol monobutyl ether, coconut oil fatty acid diethanolamide, alkyl glycoside polyoxyethylene ether, fatty acid methyl ester ethoxylate, dibutyl hydroxy toluene, methyl tert-butyl ether, dimethyl carbonate and polymeric isomeric alcohol polyoxyethylene butenyl amide into solvent oil, stirring at the speed of 600r/min for 10min, heating to 50 ℃, continuing stirring for 30min, cooling to room temperature, adding triethanolamine, sodium metasilicate, isopropanol, a scale and corrosion inhibitor and a stabilizer, adjusting the rotating speed to 1200r/min, and stirring for 20 min.

Example 5:

9% of polyether amine, 1% of long-chain alkyl polyether co-modified silicone oil, 0.15% of ethylene glycol monobutyl ether, 3% of coconut oil fatty acid diethanolamide, 8% of alkyl glycoside polyoxyethylene ether, 0.5% of fatty acid methyl ester ethoxylate, 0.03% of dibutyl hydroxy toluene, 0.05% of methyl tert-butyl ether, 10% of dimethyl carbonate, 2% of poly (isomeric alcohol) polyoxyethylene butenyl amide, 3% of triethanolamine, 1% of sodium metasilicate, 4% of isopropanol, 4% of phosphonocarboxylic acid copolymer and barium petroleum sulfonate in a weight ratio of 4: 1, 0.01 percent of scale and corrosion inhibitor, 0.8 percent of stabilizer which is formed by mixing calcium stearate and epoxidized soybean oil, and the balance of 200# solvent oil.

adding hydrogen-containing silicone oil, allyl epoxy polyether, hexadecene and isopropanol into a reactor, wherein the weight ratio of the hydrogen-containing silicone oil to the allyl epoxy polyether to the hexadecene is 25: 1: and 3, slowly heating to 70 ℃, adding a chloroplatinic acid catalyst, stirring for reacting for 8min, heating to reflux for reacting for 5h, distilling under reduced pressure to remove low-boiling-point substances, cooling to obtain an intermediate, adding the intermediate and the amino-terminated polyether into a reactor, stirring, heating to 80 ℃, reacting for 8h, and distilling under reduced pressure to remove the low-boiling-point substances.

adding polyether amine, long-chain alkyl polyether co-modified silicone oil, ethylene glycol monobutyl ether, coconut oil fatty acid diethanolamide, alkyl glycoside polyoxyethylene ether, fatty acid methyl ester ethoxylate, dibutyl hydroxy toluene, methyl tert-butyl ether, dimethyl carbonate and polymeric isomeric alcohol polyoxyethylene butenyl amide into solvent oil, stirring at the speed of 800r/min for 5min, heating to 50 ℃, continuing stirring for 20min, cooling to room temperature, adding triethanolamine, sodium metasilicate, isopropanol, a scale and corrosion inhibitor and a stabilizer, adjusting the rotating speed to 1200r/min, and stirring for 20 min.

Example 6:

10% of polyether amine, 1% of long-chain alkyl polyether co-modified silicone oil, 0.1% of ethylene glycol monobutyl ether, 3.5% of coconut oil fatty acid diethanolamide, 7% of alkyl glycoside polyoxyethylene ether, 0.8% of fatty acid methyl ester ethoxylate, 0.05% of dibutyl hydroxy toluene, 0.02% of methyl tert-butyl ether, 10% of dimethyl carbonate, 1% of polymerized isomeric alcohol polyoxyethylene butenyl amide, 2% of triethanolamine, 1.2% of sodium metasilicate, 5% of isopropanol, a phosphonocarboxylic acid copolymer and barium petroleum sulfonate in a weight ratio of 1: 1, 0.01 percent of scale and corrosion inhibitor, 0.6 percent of stabilizer formed by mixing zinc stearate and epoxidized soybean oil, and the balance of 200# solvent oil.

adding hydrogen-containing silicone oil, allyl epoxy polyether, hexadecene and isopropanol into a reactor, wherein the weight ratio of the hydrogen-containing silicone oil to the allyl epoxy polyether to the hexadecene is 25: 1: and 3, slowly heating to 70 ℃, adding a chloroplatinic acid catalyst, stirring for reaction for 5min, heating to reflux for reaction for 3h, distilling under reduced pressure to remove low-boiling-point substances, cooling to obtain an intermediate, adding the intermediate and the amino-terminated polyether into a reactor, stirring, heating to 85 ℃, reacting for 8h, and distilling under reduced pressure to remove the low-boiling-point substances.

adding polyether amine, long-chain alkyl polyether co-modified silicone oil, ethylene glycol monobutyl ether, coconut oil fatty acid diethanolamide, alkyl glycoside polyoxyethylene ether, fatty acid methyl ester ethoxylate, dibutyl hydroxy toluene, methyl tert-butyl ether, dimethyl carbonate and polymeric isomeric alcohol polyoxyethylene butenyl amide into solvent oil, stirring at the speed of 800r/min for 5min, heating to 50 ℃, continuing stirring for 20min, cooling to room temperature, adding triethanolamine, sodium metasilicate, isopropanol, a scale and corrosion inhibitor and a stabilizer, adjusting the rotating speed to 1200r/min, and stirring for 30 min.

Example 7:

polyether amine 2%, long-chain alkyl polyether co-modified silicone oil 1%, ethylene glycol monobutyl ether 0.1%, coconut oil fatty acid diethanolamide 2%, alkyl glycoside polyoxyethylene ether 4%, fatty acid methyl ester ethoxylate 0.5%, dibutyl hydroxy toluene 0.01%, methyl tert-butyl ether 0.01%, dimethyl carbonate 5%, poly (isomeric alcohol) polyoxyethylene butenyl amide 1%, triethanolamine 2%, sodium metasilicate 1%, isopropanol 4%, phosphono carboxylic acid copolymer and barium petroleum sulfonate in a weight ratio of 1: 1, 0.01 percent of scale and corrosion inhibitor, 0.5 percent of stabilizer formed by mixing calcium ricinoleate and epoxidized soybean oil, and the balance of 200# solvent oil.

adding hydrogen-containing silicone oil, allyl epoxy polyether, hexadecene and isopropanol into a reactor, wherein the weight ratio of the hydrogen-containing silicone oil to the allyl epoxy polyether to the hexadecene is 20: 1: and 3, slowly heating to 70 ℃, adding a chloroplatinic acid catalyst, stirring for reaction for 5min, heating to reflux for reaction for 3h, distilling under reduced pressure to remove low-boiling-point substances, cooling to obtain an intermediate, adding the intermediate and the amino-terminated polyether into a reactor, stirring, heating to 80 ℃, reacting for 5h, and distilling under reduced pressure to remove the low-boiling-point substances.

adding polyether amine, long-chain alkyl polyether co-modified silicone oil, ethylene glycol monobutyl ether, coconut oil fatty acid diethanolamide, alkyl glycoside polyoxyethylene ether, fatty acid methyl ester ethoxylate, dibutyl hydroxy toluene, methyl tert-butyl ether, dimethyl carbonate and polymeric isomeric alcohol polyoxyethylene butenyl amide into solvent oil, stirring at the speed of 600r/min for 5min, heating to 50 ℃, continuing stirring for 20min, cooling to room temperature, adding triethanolamine, sodium metasilicate, isopropanol, a scale and corrosion inhibitor and a stabilizer, adjusting the rotating speed to 1200r/min, and stirring for 20 min.

Example 8:

10% of polyether amine, 4% of long-chain alkyl polyether co-modified silicone oil, 0.5% of ethylene glycol monobutyl ether, 5% of coconut oil fatty acid diethanolamide, 12% of alkyl glycoside polyoxyethylene ether, 1.2% of fatty acid methyl ester ethoxylate, 0.1% of dibutyl hydroxy toluene, 0.1% of methyl tert-butyl ether, 10% of dimethyl carbonate, 2% of poly (isomeric alcohol) polyoxyethylene butenyl amide, 4% of triethanolamine, 3% of sodium metasilicate, 8% of isopropanol, a phosphono carboxylic acid copolymer and barium petroleum sulfonate in a weight ratio of 5: 1, 0.05 percent of scale and corrosion inhibitor, 1 percent of stabilizer formed by mixing potassium stearate and epoxidized soybean oil, and the balance of d40 solvent oil.

adding hydrogen-containing silicone oil, allyl epoxy polyether, hexadecene and isopropanol into a reactor, wherein the weight ratio of the hydrogen-containing silicone oil to the allyl epoxy polyether to the hexadecene is 25: 1: and 3, slowly heating to 75 ℃, adding a chloroplatinic acid catalyst, stirring for reaction for 10min, heating to reflux for reaction for 5h, distilling under reduced pressure to remove low-boiling-point substances, cooling to obtain an intermediate, adding the intermediate and the amino-terminated polyether into a reactor, stirring, heating to 90 ℃, reacting for 10h, and distilling under reduced pressure to remove the low-boiling-point substances.

adding polyether amine, long-chain alkyl polyether co-modified silicone oil, ethylene glycol monobutyl ether, coconut oil fatty acid diethanolamide, alkyl glycoside polyoxyethylene ether, fatty acid methyl ester ethoxylate, dibutyl hydroxy toluene, methyl tert-butyl ether, dimethyl carbonate and polymeric isomeric alcohol polyoxyethylene butenyl amide into solvent oil, stirring at the speed of 800r/min for 10min, heating to 60 ℃, continuing stirring for 40min, cooling to room temperature, adding triethanolamine, sodium metasilicate, isopropanol, a scale and corrosion inhibitor and a stabilizer, adjusting the rotating speed to 1400r/min, and stirring for 40 min.

And (3) performance testing:

the following table 1 shows the results of the performance tests of the cleaning agent of example 1 of the present invention:

table 1:

as can be seen from the above table 1, the heavy oil dirt cleaning agent for the inner wall of the petrochemical pipeline, prepared by the method, has stable properties and a good heavy oil dirt removing effect, accords with the development trend of the pipeline cleaning agent industry, and has an excellent application prospect.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The cleaning agent for the heavy oil dirt on the inner wall of the petrochemical pipeline is characterized by comprising the following components in percentage by weight:

2. The cleaning agent for heavy oil stains on the inner wall of the petrochemical pipeline as claimed in claim 1, which comprises the following components in percentage by weight:

3. The cleaning agent for heavy oil stains on the inner wall of the petrochemical pipeline as claimed in claim 1, which comprises the following components in percentage by weight:

4. The cleaning agent for heavy oil stains on the inner wall of the petrochemical pipeline as claimed in claim 1, wherein the preparation method of the long-chain alkyl polyether co-modified silicone oil is as follows:

5. The heavy oil stain cleaning agent for the inner wall of the petrochemical pipeline as claimed in claim 4, wherein the weight ratio of the hydrogen-containing silicone oil, the allyl epoxy polyether and the hexadecene is 20-25: 1: 3.

6. the cleaning agent for heavy oil stains on the inner wall of a petrochemical pipeline as claimed in claim 4, wherein the scale and corrosion inhibitor is formed by mixing phosphono carboxylic acid copolymer and barium petroleum sulfonate according to a certain weight ratio.

7. The cleaning agent for heavy oil stains on the inner wall of the petrochemical pipeline as claimed in claim 6, wherein the scale and corrosion inhibitor is phosphono carboxylic acid copolymer and barium petroleum sulfonate in a weight ratio of 1-5: 1 are mixed.

8. The cleaning agent for heavy oil stains on the inner wall of a petrochemical pipeline as claimed in claim 6, wherein the stabilizer is prepared by mixing epoxy soybean oil with any one of calcium stearate, aluminum stearate, potassium stearate, zinc stearate, calcium ricinoleate and zinc ricinoleate.

9. The cleaning agent for heavy oil stains on the inner wall of the petrochemical pipeline as claimed in claim 6, wherein the solvent oil is 200# solvent oil or d40 solvent oil.

10. The preparation method of the heavy oil dirt cleaning agent for the inner wall of the petrochemical pipeline as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps: