CN110129805A - A kind of ethylene chemical industry neutralizer - Google Patents
A kind of ethylene chemical industry neutralizer Download PDFInfo
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- CN110129805A CN110129805A CN201910400054.XA CN201910400054A CN110129805A CN 110129805 A CN110129805 A CN 110129805A CN 201910400054 A CN201910400054 A CN 201910400054A CN 110129805 A CN110129805 A CN 110129805A
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- Prior art keywords
- neutralizer
- amine
- thiocarbamide
- propylamine
- double
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/141—Amines; Quaternary ammonium compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/16—Sulfur-containing compounds
- C23F11/162—Thioaldehydes; Thioketones
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of ethylene chemical industry neutralizer, S1, ingredient: double imidazolidine thione derivatives, organic amine compound, solvent；S2, ingredient: thiocarbamide 20-50%, diethylenetriamine 20-55%, ethanedioic acid 10-28%, deionized water 50-60%, ethylenediamine 12-18%, n-propylamine 7-15%, isopropylamine 15-20%, isobutyl amine 11-16%, dimethyl amine 8-10%；S3, double imidazolidine thione derivatives are prepared: weighs thiocarbamide, diethylenetriamine and ethanedioic acid in proportion；Then thiocarbamide and divinyl are mixed in the ratio of 1:1.3, it is poured into reaction kettle and is reacted after stirring, reaction temperature is 150~210 DEG C, and the reaction time is 5 hours, ethoxy-imidazolidine thione compound is obtained, is then cooled to less than 95 DEG C；Neutralizer produced by the present invention is using toxic material, and when in corrosivity, using effect is good, and environmentally friendly object pollutes, and by neutralizer allotment in the concentration of 60mg/L, temperature is 90 DEG C, and after use after static placement 9 hours, neutralizing rate of corrosion can reach 99%.
Description
Technical field
The present invention relates to chemical technology field, specially a kind of ethylene chemical industry neutralizer.
Background technique
Ethylene is a kind of colourless slightly odorous gas, and density 1.256g/L is more smaller than the density of air, is insoluble in
Water is soluble in the organic solvents such as carbon tetrachloride.Ethylene is synthetic fibers, synthetic rubber, synthetic plastic (polyethylene and polychlorostyrene second
Alkene), the basic chemical raw materials of synthesizing alcohol (alcohol), ethylene is one of maximum chemical products of yield in the world, in processing,
Dilution steam generation makes hydrocarbon raw material pyrolysis generate ethylene, and dilution steam generation promotes it is expected alkene by reducing the hydrocarbon partial pressure in pyrolysis furnace
It is formed and it extends the operation duration of furnace by slowing down the rate of coke laydown, be pyrolyzed it in pyrolysis furnace in hydrocarbon raw material
Afterwards, it is necessary to be quickly cooled down effluent gas to prevent reaction alkene from reassembling into undesirable oligomer, polymer and condensed virtue
The mixture of fragrant race's structure.
Should " steam cracking " process also generates on a small quantity less desired by-product, as carbon monoxide, carbon dioxide, acetaldehyde and
Acetic acid, propionic acid, formic acid and the advanced C4-C6 organic acid of lesser degree promote chilling water system, chilled water (chw) cleans container and dilute
Release the corrosion in the aqueous environments of steam generator.Another factor of acid condition is closed by vulcanization in " Dilution steam system "
Object cracks the acid based on sulphur to be formed, and can corrode equipment for a long time, we will use neutralizer generally to neutralize corrosivity, existing
Contain harmful substance in neutralizer, is easy after use to environmental effects.
Summary of the invention
The purpose of the present invention is to provide a kind of ethylene chemical industry neutralizers, to solve current ethylene in above-mentioned background technique
It needs in process using corrosion inhibiter, but existing corrosion inhibiter can generate harmful substance after use, it is unfriendly to environment, and
The bad problem of the anti-corrosion effects of corrosion inhibiter.
To achieve the above object, it the invention provides the following technical scheme: a kind of ethylene chemical industry neutralizer, including walks as follows
It is rapid:
S1, ingredient: double imidazolidine thione derivatives, organic amine compound, solvent；
S2, ingredient: thiocarbamide 20-50%, diethylenetriamine 20-55%, ethanedioic acid 10-28%, deionized water 50-60%, ethylenediamine 12-
18%, n-propylamine 7-15%, isopropylamine 15-20%, isobutyl amine 11-16%, dimethyl amine 8-10%；
S3, double imidazolidine thione derivatives are prepared: weighs thiocarbamide, diethylenetriamine and ethanedioic acid in proportion；Then by thiocarbamide and
Divinyl is mixed in the ratio of 1:1.3, is poured into reaction kettle and is reacted after stirring, and reaction temperature is
150~210 DEG C, the reaction time is 5 hours, obtains ethoxy-imidazolidine thione compound, is then cooled to less than 95 DEG C, will
Ethanedioic acid and catalyst are added in ethoxy-imidazolidine thione, 181 DEG C at a temperature of react 4 hours, be then cooled to room
Temperature can reach double imidazolidine thione derivatives；
S4, it prepares organic amine compound: weighing a certain amount of ethylenediamine, n-propylamine, isopropylamine, isobutyl amine and dimethyl amine,
Then organic amine compound is made after uniformly mixing ethylenediamine, n-propylamine, isopropylamine, isobutyl amine and dimethyl amine；
S4, it prepares neutralizer: double imidazolidine thione derivatives, machine amine compounds and deionized water is mixed in the ratio of 1:1:4
Neutralizer is made after stirring.
Preferably, the reaction temperature of the mixture of the thiocarbamide and divinyl in a kettle, which uses, is gradually warmed up method,
In every 1 hour increase 6 DEG C.
Preferably, the ethylenediamine, n-propylamine, isopropylamine, isobutyl amine and dimethyl amine are according to 1:1:1:0.8:0.3's
Ratio is prepared.
Preferably, the catalyst uses the out of stock catalyst containing titanium tungsten powder.
The present invention provides a kind of ethylene chemical industry neutralizer, have it is following the utility model has the advantages that
Neutralizer produced by the present invention is using toxic material, and environmentally friendly object pollutes, and in and when corrosivity, uses effect
Fruit is good, and cost of material is low and manufacture craft brief introduction so that overall cost is low, wherein by neutralizer allotment 60mg/L concentration,
Temperature is 90 DEG C, and after use after static placement 9 hours, neutralizing rate of corrosion can reach 99%.
Detailed description of the invention
Fig. 1 is corrosion inhibition table of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
Embodiment 1:
Thiocarbamide 20-50%, diethylenetriamine 20-55%, ethanedioic acid 10-28%, deionized water 50-60%, ethylenediamine 12-18%, positive third
Amine 7-15%, isopropylamine 15-20%, isobutyl amine 11-16%, dimethyl amine 8-10%；
Preparation method: double imidazolidine thione derivatives are prepared first, it is standby to weigh thiocarbamide, diethylenetriamine and ethanedioic acid in proportion
With；Then thiocarbamide and divinyl are mixed in the ratio of 1:1.3, are poured into reaction kettle and carry out after stirring
Reaction, reaction temperature are 150~210 DEG C, and using after temperature reaches 150 DEG C, 10 DEG C of raising in every 1 hour is gradually warmed up
Method, reaction time are 5 hours, obtain ethoxy-imidazolidine thione compound, are then cooled to less than 95 DEG C, by ethoxy-miaow
Ethanedioic acid and catalyst are added in zolidine thione, 181 DEG C at a temperature of react 4 hours, be then cooled to room temperature, that is, can reach
Double imidazolidine thione derivatives；Then organic amine compound is prepared, weighs a certain amount of second according to the ratio of 1:1:1:0.8:0.3
Diamines, n-propylamine, isopropylamine, isobutyl amine and dimethyl amine, then by ethylenediamine, n-propylamine, isopropylamine, isobutyl amine and diformazan
Organic amine compound is made after uniformly mixing in base ethamine；Finally by double imidazolidine thione derivatives, machine amine compounds and go
Neutralizer is made after being mixed in the ratio of 1:1:4 in ionized water.
Embodiment 2:
Thiocarbamide 35%, diethylenetriamine 35%, ethanedioic acid 20%, deionized water 55%, ethylenediamine 15%, n-propylamine 11%, isopropylamine
17%, isobutyl amine 13%, dimethyl amine 8.8%；
Preparation method: double imidazolidine thione derivatives are prepared first, it is standby to weigh thiocarbamide, diethylenetriamine and ethanedioic acid in proportion
With；Then thiocarbamide and divinyl are mixed in the ratio of 1:1.3, are poured into reaction kettle and carry out after stirring
Reaction, reaction temperature are 150~210 DEG C, and using after temperature reaches 150 DEG C, 10 DEG C of raising in every 1 hour is gradually warmed up
Method, reaction time are 5 hours, obtain ethoxy-imidazolidine thione compound, are then cooled to less than 95 DEG C, by ethoxy-miaow
Ethanedioic acid and catalyst are added in zolidine thione, 181 DEG C at a temperature of react 4 hours, be then cooled to room temperature, that is, can reach
Double imidazolidine thione derivatives；Then organic amine compound is prepared, weighs a certain amount of second according to the ratio of 1:1:1:0.8:0.3
Diamines, n-propylamine, isopropylamine, isobutyl amine and dimethyl amine, then by ethylenediamine, n-propylamine, isopropylamine, isobutyl amine and diformazan
Organic amine compound is made after uniformly mixing in base ethamine；Finally by double imidazolidine thione derivatives, machine amine compounds and go
Neutralizer is made after being mixed in the ratio of 1:1:4 in ionized water.
Embodiment 3:
Thiocarbamide 40%, diethylenetriamine 40%, ethanedioic acid 22%, deionized water 57%, ethylenediamine 16%, n-propylamine 13%, isopropylamine
18%, isobutyl amine 14%, dimethyl amine 9.5%；
Preparation method: double imidazolidine thione derivatives are prepared first, it is standby to weigh thiocarbamide, diethylenetriamine and ethanedioic acid in proportion
With；Then thiocarbamide and divinyl are mixed in the ratio of 1:1.3, are poured into reaction kettle and carry out after stirring
Reaction, reaction temperature are 150~210 DEG C, and using after temperature reaches 150 DEG C, 10 DEG C of raising in every 1 hour is gradually warmed up
Method, reaction time are 5 hours, obtain ethoxy-imidazolidine thione compound, are then cooled to less than 95 DEG C, by ethoxy-miaow
Ethanedioic acid and catalyst are added in zolidine thione, 181 DEG C at a temperature of react 4 hours, be then cooled to room temperature, that is, can reach
Double imidazolidine thione derivatives；Then organic amine compound is prepared, weighs a certain amount of second according to the ratio of 1:1:1:0.8:0.3
Diamines, n-propylamine, isopropylamine, isobutyl amine and dimethyl amine, then by ethylenediamine, n-propylamine, isopropylamine, isobutyl amine and diformazan
Organic amine compound is made after uniformly mixing in base ethamine；Finally by double imidazolidine thione derivatives, machine amine compounds and go
Neutralizer is made after being mixed in the ratio of 1:1:4 in ionized water.
Embodiment 4:
Thiocarbamide 50%, diethylenetriamine 55%, ethanedioic acid 28%, deionized water 60%, ethylenediamine 18%, n-propylamine 15%, isopropylamine
20%, isobutyl amine 16%, dimethyl amine 10%；
Preparation method: double imidazolidine thione derivatives are prepared first, it is standby to weigh thiocarbamide, diethylenetriamine and ethanedioic acid in proportion
With；Then thiocarbamide and divinyl are mixed in the ratio of 1:1.3, are poured into reaction kettle and carry out after stirring
Reaction, reaction temperature are 150~210 DEG C, and using after temperature reaches 150 DEG C, 10 DEG C of raising in every 1 hour is gradually warmed up
Method, reaction time are 5 hours, obtain ethoxy-imidazolidine thione compound, are then cooled to less than 95 DEG C, by ethoxy-miaow
Ethanedioic acid and catalyst are added in zolidine thione, 181 DEG C at a temperature of react 4 hours, be then cooled to room temperature, that is, can reach
Double imidazolidine thione derivatives；Then organic amine compound is prepared, weighs a certain amount of second according to the ratio of 1:1:1:0.8:0.3
Diamines, n-propylamine, isopropylamine, isobutyl amine and dimethyl amine, then by ethylenediamine, n-propylamine, isopropylamine, isobutyl amine and diformazan
Organic amine compound is made after uniformly mixing in base ethamine；Finally by double imidazolidine thione derivatives, machine amine compounds and go
Neutralizer is made after being mixed in the ratio of 1:1:4 in ionized water.
Embodiment 5:
The selection of neutralizer concentration
Prepare 4 groups of numbered beakers, and inserts the etchant solution of material of the same race, be respectively 20mg/L, 40mg/L by concentration,
The neutralizer of 60mg/L, 80mg/L pour into, then by test piece as wherein, static state is placed 6 hours, and temperature is 90 DEG C, after, it surveys
Corrosion inhibition rate is tried, such as table 1.
The influence of 1 neutralizer concentration of table
| Number | Concentration mg/L | Rate of corrosion mm/a | Corrosion inhibition rate % |
| 1 | 20 | 0.212 | 98.2 |
| 2 | 40 | 0.295 | 98.7 |
| 3 | 60 | 0.497 | 99.4 |
| 4 | 80 | 0.312 | 98.9 |
As shown in Table 1, when the concentration of neutralizer is 60mg/L, corrosion inhibition rate effect can reach 99.4%, therefore the concentration of neutralizer is
Using effect is best when 60mg/L.
Embodiment 6:
The selection of static standing time
Prepare 4 groups of numbered beakers, and insert the etchant solution of material of the same race, is that 60mg/L neutralizer pours into corrosion by concentration
In solution, then by test piece as wherein, static state is placed 6,9,12,24 hours respectively, after, corrosion inhibition rate is tested, such as table 2.
The influence of the static standing time of table 2
| Number | Static standing time h | Rate of corrosion mm/a | Corrosion inhibition rate % |
| 1 | 6 | 0.382 | 98.1 |
| 2 | 9 | 0.392 | 99.5 |
| 3 | 12 | 0.447 | 98.5 |
| 4 | 24 | 0.352 | 98.2 |
As shown in Table 2, after using neutralizer, when the 9h that static state is placed after, corrosion inhibition rate effect can reach 99.5%, therefore neutralizer
Effect is best when the static 9h placed after use.
Conclusion: the concentration that the worth neutralizer of the present invention is formulated as 60mg/L is placed in etchant solution after 9 hours, in
It is best with corrosive effect.
Claims (4)
1. a kind of ethylene chemical industry neutralizer, which comprises the steps of:
S1, ingredient: double imidazolidine thione derivatives, organic amine compound, solvent；
S2, ingredient: thiocarbamide 20-50%, diethylenetriamine 20-55%, ethanedioic acid 10-28%, deionized water 50-60%, ethylenediamine 12-
18%, n-propylamine 7-15%, isopropylamine 15-20%, isobutyl amine 11-16%, dimethyl amine 8-10%；
S3, double imidazolidine thione derivatives are prepared: weighs thiocarbamide, diethylenetriamine and ethanedioic acid in proportion；Then by thiocarbamide and
Divinyl is mixed in the ratio of 1:1.3, is poured into reaction kettle and is reacted after stirring, and reaction temperature is
150~210 DEG C, the reaction time is 5 hours, obtains ethoxy-imidazolidine thione compound, is then cooled to less than 95 DEG C, will
Ethanedioic acid and catalyst are added in ethoxy-imidazolidine thione, 181 DEG C at a temperature of react 4 hours, be then cooled to room
Temperature can reach double imidazolidine thione derivatives；
S4, it prepares organic amine compound: weighing a certain amount of ethylenediamine, n-propylamine, isopropylamine, isobutyl amine and dimethyl amine,
Then organic amine compound is made after uniformly mixing ethylenediamine, n-propylamine, isopropylamine, isobutyl amine and dimethyl amine；
S4, it prepares neutralizer: double imidazolidine thione derivatives, machine amine compounds and deionized water is mixed in the ratio of 1:1:4
Neutralizer is made after stirring.
2. a kind of ethylene chemical industry neutralizer according to claim 1, it is characterised in that: the thiocarbamide and divinyl it is mixed
The reaction temperature of object in a kettle is closed using method is gradually warmed up, wherein every 1 hour increases 6 DEG C.
3. a kind of ethylene chemical industry neutralizer according to claim 1, it is characterised in that: the ethylenediamine, n-propylamine, different
Propylamine, isobutyl amine and dimethyl amine are prepared according to the ratio of 1:1:1:0.8:0.3.
4. a kind of ethylene chemical industry neutralizer according to claim 1, it is characterised in that: the catalyst, which uses, contains titanium
The out of stock catalyst of tungsten powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910400054.XA CN110129805A (en) | 2019-05-14 | 2019-05-14 | A kind of ethylene chemical industry neutralizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910400054.XA CN110129805A (en) | 2019-05-14 | 2019-05-14 | A kind of ethylene chemical industry neutralizer |
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| CN110129805A true CN110129805A (en) | 2019-08-16 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6866797B1 (en) * | 2000-08-03 | 2005-03-15 | Bj Services Company | Corrosion inhibitors and methods of use |
| CN103359841A (en) * | 2012-03-29 | 2013-10-23 | 中国石油化工股份有限公司 | Neutralizing corrosion inhibitor and preparation method thereof |
| CN107236533A (en) * | 2017-07-26 | 2017-10-10 | 徐文忠 | Acidification corrosion inhibitor and preparation method thereof |
| CN108264891A (en) * | 2017-12-29 | 2018-07-10 | 南京华洲新材料有限公司 | A kind of oil-soluble inhibitor and preparation method thereof |
-
2019
- 2019-05-14 CN CN201910400054.XA patent/CN110129805A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6866797B1 (en) * | 2000-08-03 | 2005-03-15 | Bj Services Company | Corrosion inhibitors and methods of use |
| CN103359841A (en) * | 2012-03-29 | 2013-10-23 | 中国石油化工股份有限公司 | Neutralizing corrosion inhibitor and preparation method thereof |
| CN107236533A (en) * | 2017-07-26 | 2017-10-10 | 徐文忠 | Acidification corrosion inhibitor and preparation method thereof |
| CN108264891A (en) * | 2017-12-29 | 2018-07-10 | 南京华洲新材料有限公司 | A kind of oil-soluble inhibitor and preparation method thereof |
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