CN101285190A - Corrosion inhibition antisludging agent special for ethylene compression system - Google Patents
Corrosion inhibition antisludging agent special for ethylene compression system Download PDFInfo
- Publication number
- CN101285190A CN101285190A CN 200810011481 CN200810011481A CN101285190A CN 101285190 A CN101285190 A CN 101285190A CN 200810011481 CN200810011481 CN 200810011481 CN 200810011481 A CN200810011481 A CN 200810011481A CN 101285190 A CN101285190 A CN 101285190A
- Authority
- CN
- China
- Prior art keywords
- corrosion inhibition
- scale
- inhabitation
- compression system
- agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a corrosion inhibition and scale inhabitation agent specially used for an ethylene compression system, belonging to the chemical engineering technical field. The compositions by weight percentage of the corrosion inhibition and scale inhabitation agent are: 20 to 35 percent of ethylenediamine, 1 to 5 percent of imidazoline, 0.1 to 1 percent of sodium hexametahposphate and 60 to 75 percent of water. The corrosion inhibition and scale inhabitation agent is a composite organic product and is a special corrosion inhibition and scale inhabitation agent developed for the ethylene compression system; the corrosion inhibition and scale inhabitation effect is good and can completely meet the requirements of the ethylene compression system; and the corrosion inhibition and scale inhabitation agent replenishes the blank of corrosion inhibition and scale inhabitation agent of the type. Simultaneously, the corrosion inhibition and scale inhabitation agent is applied to an oil and gas well and a pipeline in which sulfurated hydrogen, carbon dioxides and water coexist, which can play a good part in corrosion inhibition and scale inhabitation.
Description
One, technical field
The invention belongs to chemical technology field, be specifically related to a kind of corrosion inhibiting and descaling agent that is exclusively used in ethylene compression system.
Two, background technology
At present, ethylene compression system is five sections compressions, intersegmentally cools off with water coolant, and five sections exit gass are after water quench, again through low-temperature material and propylene refrigerant cooling.Intersegmental lime set is divided into heavy constituent and light constituent two portions, and heavy constituent obtain pyrolysis gasoline cut fraction through gasoline stripping tower; Light constituent obtains carbon three and carbon three above lighter hydrocarbons lime sets through condensate stripper.Because the outlet of first three section of compressor is equipped with sour gas and removes system's (alkali cleaning or hydramine liquid-alkali cleaning), to remove the CO in the splitting gas
2And H
2S is so first three section of ethylene compression system very easily is corroded.Particularly mainly concentrate on the equipment such as gun barrel, interchanger, by-pass valve control.After wherein interchanger, by-pass valve control are corroded, producing to leak directly to influence normal safety in production, also can cause serious accident when serious.In order to guarantee normal production operation, prolong on-stream time, need inject corrosion inhibiting and descaling agent respectively in preceding three-stage compressor exit, heat exchanging device, gun barrel and by-pass valve control carry out inhibition, scale inhibition, produce to prevent corrosive.The corrosion inhibiting and descaling agent kind of using is more at present, but the corrosion inhibiting and descaling agent that uses at ethylene compression system does not fully appear in the newspapers as yet.And adopt existing corrosion inhibiting and descaling agent specific aim not strong, and being difficult to reach the requirement of ethylene compression system to corrosion-mitigation scale-inhibition, anticorrosion-antiscaling effect is relatively poor.
Three, summary of the invention
The purpose of this invention is to provide a kind of corrosion inhibiting and descaling agent that is exclusively used in ethylene compression system, this corrosion inhibiting and descaling agent is with strong points, anticorrosion-antiscaling effect good, can reach the requirement of ethylene compression system to corrosion-mitigation scale-inhibition fully, the blank of having replenished this type of corrosion inhibiting and descaling agent.
For achieving the above object, the technical solution used in the present invention is: component that this corrosion inhibiting and descaling agent comprises and weight percent are: quadrol 20-35%; Tetrahydroglyoxaline 1-5%; Sodium hexametaphosphate 99 0.1-1%; Water 60-75%.
The principle of corrosion inhibiting and descaling agent of the present invention is: 1, be controlled between the 5-7 by the pH value stabilization of chelatropic reaction with profit, prevent the influence that sour water confrontation system produces, slow down interchanger and the profit condensed system corrodes; 2, but the oxide compound of the settling in the profit, foundry loam and iron and copper is disperseed the state that becomes not have viscosity unrestricted flow, be easy to discharge, thereby disperse the hard scale in the profit, prevent fouling by chelatropic reaction.This corrosion inhibiting and descaling agent also can form etch-proof passivation layer in the metallic surface.
Corrosion inhibiting and descaling agent of the present invention is a kind of compound organic products, is that its anticorrosion-antiscaling effect is good, can reach the requirement of ethylene compression system fully, the blank of having replenished this type of corrosion inhibiting and descaling agent at a kind of special corrosion and scale inhibitor of ethylene compression system development.Apply it to oil gas well and pipeline that hydrogen sulfide, carbonic acid gas and water co-exist in simultaneously, also can play good anticorrosion-antiscaling effect.
The advantage and the characteristics of corrosion inhibiting and descaling agent of the present invention are as follows:
1, this corrosion inhibiting and descaling agent at room temperature is faint yellow～pale brown look liquid, water soluble and most of organic solvent.
2, this corrosion inhibiting and descaling agent helps the corrosion that caused by CO2, H2S in the Controlling System, reduces the infringement that causes system because of the influence of metallic corrosion products;
When 3, this corrosion inhibiting and descaling agent uses, be not subjected to the influence of temperature and dosage range fluctuation;
4, this corrosion inhibiting and descaling agent helps to keep the interchanger cleaning inside, reduces the influence to system of carrying secretly of iron and copper; Reduce the maintenance cost of heat exchanger system;
5, this corrosion inhibiting and descaling agent is a liquid product, use, easy-to-operate, nontoxic.
6, production operation has no adverse effect this corrosion inhibiting and descaling agent to postorder, and the device product quality is also had no adverse effect.
The preparation method of corrosion inhibiting and descaling agent of the present invention is: add entry, Sodium hexametaphosphate 99 by proportioning in container successively earlier, controlled temperature is between 50-90 ℃, being stirred to Sodium hexametaphosphate 99 all dissolves, after being cooled to optimal temperature, add tetrahydroglyoxaline, quadrol by proportioning successively again, fully stir, reaction, be cooled to room temperature after, filter and promptly get product.
Four, embodiment
Embodiment 1: make 100 grams corrosion inhibiting and descaling agent of the present invention.
In container, add 68 gram water, 0.4 gram Sodium hexametaphosphate 99 successively, controlled temperature is between 50-90 ℃, being stirred to Sodium hexametaphosphate 99 all dissolves, after being cooled to optimal temperature, add 3.8 gram tetrahydroglyoxalines, 27.8 gram quadrols more successively, fully stir, reaction, be cooled to room temperature after, filter and promptly get product.After tested: corrosion inhibition rate reaches 98.42%, and scale inhibition performance reaches 96.56%, and effect is remarkable, is better than like product.
Embodiment 2: make 100 grams corrosion inhibiting and descaling agent of the present invention.
In container, add 71 gram water, 0.5 gram Sodium hexametaphosphate 99 successively, controlled temperature is between 50-90 ℃, being stirred to Sodium hexametaphosphate 99 all dissolves, after being cooled to optimal temperature, add 2.9 gram tetrahydroglyoxalines, 25.6 gram quadrols more successively, fully stir, reaction, be cooled to room temperature after, filter and promptly get product.After tested: corrosion inhibition rate reaches 99.04%, and scale inhibition performance reaches 97.82%, and effect is remarkable, is better than like product.
The using method of corrosion-mitigation scale-inhibition of the present invention is: 1, set up reagent pot: set up volume＞3M
3, in order to the reagent pot of this corrosion inhibiting and descaling agent of splendid attire, and communicate with the reagent inlet, and adopt reagent pump to inject reagent by pipeline.The rated flow of reagent pump is 10L/h, and its top hole pressure should satisfy the system pressure requirement.Reagent pot should have companion heat, pipeline to need insulation, and reagent pot and export pipeline corrosion resistant material are made.2, add reagent; Reagent is joined in the ethylene compression system continuously, and the initial stage can suitably be improved injection rate, adds point and is respectively 3.This reagent injects ethylene compression system from heat exchanger entrance, and the dosing dosage of recommendation is 80-120ppm.3, profit parameter control: regularly detect the pH value and the iron ion content of oil-water mixture, suitably adjust the add-on of reagent, the pH value of oil-water mixture and iron ion content are controlled in the scope shown in the following table:
Claims (2)
1, a kind of corrosion inhibiting and descaling agent that is exclusively used in ethylene compression system, it is characterized in that: component that comprises and weight percent are: quadrol 20-35%; Tetrahydroglyoxaline 1-5%; Sodium hexametaphosphate 99 0.1-1%; Water 60-75%.
2, a kind of corrosion inhibiting and descaling agent that is exclusively used in ethylene compression system according to claim 1, it is characterized in that: described reagent injects ethylene compression system from heat exchanger entrance, dosing dosage is 80-120ppm, and control oil-water mixture the pH value be 5-7, iron ion content＜5mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100114810A CN100560802C (en) | 2008-05-21 | 2008-05-21 | A kind of corrosion inhibiting and descaling agent that is exclusively used in ethylene compression system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100114810A CN100560802C (en) | 2008-05-21 | 2008-05-21 | A kind of corrosion inhibiting and descaling agent that is exclusively used in ethylene compression system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101285190A true CN101285190A (en) | 2008-10-15 |
| CN100560802C CN100560802C (en) | 2009-11-18 |
Family
ID=40057593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008100114810A Expired - Fee Related CN100560802C (en) | 2008-05-21 | 2008-05-21 | A kind of corrosion inhibiting and descaling agent that is exclusively used in ethylene compression system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100560802C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383133A (en) * | 2011-08-04 | 2012-03-21 | 山东京博控股股份有限公司 | Corrosion inhibitor used for catalytic cracking fractionating tower top |
| CN101838552B (en) * | 2009-12-31 | 2013-10-02 | 上海良田化工有限公司 | Scale inhibitor of ethylene device compressor and using method thereof |
| CN109825837A (en) * | 2019-02-25 | 2019-05-31 | 蒋文明 | A kind of high-performance metal antirust agent and preparation method thereof |
| CN110294662A (en) * | 2019-07-02 | 2019-10-01 | 宜兴市中大凯水处理有限公司 | A kind of ethylene alkali-washing tower butter inhibitor and preparation method thereof |
| CN111020595A (en) * | 2019-12-12 | 2020-04-17 | 浙江杭化科技股份有限公司 | Corrosion inhibitor for cracking gas compressor of ethylene device |
-
2008
- 2008-05-21 CN CNB2008100114810A patent/CN100560802C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838552B (en) * | 2009-12-31 | 2013-10-02 | 上海良田化工有限公司 | Scale inhibitor of ethylene device compressor and using method thereof |
| CN102383133A (en) * | 2011-08-04 | 2012-03-21 | 山东京博控股股份有限公司 | Corrosion inhibitor used for catalytic cracking fractionating tower top |
| CN102383133B (en) * | 2011-08-04 | 2013-10-16 | 山东京博控股股份有限公司 | Corrosion inhibitor used for catalytic cracking fractionating tower top |
| CN109825837A (en) * | 2019-02-25 | 2019-05-31 | 蒋文明 | A kind of high-performance metal antirust agent and preparation method thereof |
| CN110294662A (en) * | 2019-07-02 | 2019-10-01 | 宜兴市中大凯水处理有限公司 | A kind of ethylene alkali-washing tower butter inhibitor and preparation method thereof |
| CN111020595A (en) * | 2019-12-12 | 2020-04-17 | 浙江杭化科技股份有限公司 | Corrosion inhibitor for cracking gas compressor of ethylene device |
| CN111020595B (en) * | 2019-12-12 | 2021-10-08 | 浙江杭化科技股份有限公司 | Corrosion inhibitor for cracking gas compressor of ethylene device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100560802C (en) | 2009-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100560802C (en) | A kind of corrosion inhibiting and descaling agent that is exclusively used in ethylene compression system | |
| EP2222819B1 (en) | Process to reduce acidity of crude oil | |
| CN108929666B (en) | Efficient blocking remover for sulfur-containing gas well | |
| US11549064B2 (en) | Chemical compositions and treatment systems and treatment methods using same for remediating H2S and other contaminants in fluids, including liquids,gasses and mixtures thereof | |
| CN101863523B (en) | Method for treating ammonia-containing waste water from crushed coal pressure gasification | |
| CN102373122A (en) | Inorganic ferrous sulfide passivation abluent | |
| CN102898311A (en) | Method and equipment for continuously producing methyl nitrite | |
| RU2279464C2 (en) | Method of preventing ammonium chloride-caused contamination and corrosion in crude oil processing processes and in petrochemical processes | |
| CN104787954A (en) | Wastewater pretreatment technology | |
| CN111020595B (en) | Corrosion inhibitor for cracking gas compressor of ethylene device | |
| CN102633283A (en) | Purification method of hydrocyanic acid | |
| CN104119947B (en) | A kind of catalytic cracking flue gas desulfurization and aftertreatment technology | |
| CN110642314A (en) | Process unit for comprehensively utilizing crude oil electric desalting sewage by delayed coking device | |
| CN105295989A (en) | Dehydrating and desalinizing method of high-temperature coal tar | |
| CN106362428B (en) | A kind of low temperature shifting process lime set gas stripping process | |
| CN115637168A (en) | High-efficiency composite desulfurizer for oil extraction in oil and gas field | |
| CN101538478A (en) | Method for preparing reagent for depriving hydrogen sulphide | |
| CN201903794U (en) | Ethylene unit process water pH value control system | |
| CN102383133B (en) | Corrosion inhibitor used for catalytic cracking fractionating tower top | |
| CN105734581B (en) | Ethylene device compressor high-efficient corrosion inhibitor prepares and its application method | |
| CN206089066U (en) | Alkylation waste sulfuric acid treatment device | |
| Qing | Processing high TAN crude: part I | |
| CN104941247B (en) | Jet fuel regeneration economic benefits and social benefits absorption distillation technique | |
| CN110736361A (en) | quenching tower for sulfur recovery device | |
| KR20000040400A (en) | Apparatus for removal of naphthalene from coke oven gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20100521 |