CN105002515A - Chemical cleaning method for electric dehydrator electrode plate of combination station - Google Patents
Chemical cleaning method for electric dehydrator electrode plate of combination station Download PDFInfo
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- CN105002515A CN105002515A CN201510291180.8A CN201510291180A CN105002515A CN 105002515 A CN105002515 A CN 105002515A CN 201510291180 A CN201510291180 A CN 201510291180A CN 105002515 A CN105002515 A CN 105002515A
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- mud remover
- complexing agent
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Abstract
The invention provides a chemical cleaning method for an electric dehydrator electrode plate of a combination station, and relates to the field of petrochemical engineering. The method comprises the steps that adhesive mud remover is added into crude oil with the low water content of an electric dehydrator from an oil transferring dehydrating pump inlet, the adding dosage of the adhesive mud remover in the crude oil with the low water content per kilogram ranges from 100 mg to 200 mg, and pre-processing is carried out for 3 days to 5 days; a compound of a complexing agent and oil-soluble inhibitor is added into the crude oil with the low water content of the electric dehydrator continuously, the adding dosage of the compound in the crude oil with the low water content per kilogram ranges from 1000 mg to 2000 mg, and processing is carried out for 5 days to 10 days. In this way, cleaning without shutdown on the electric dehydrator can be achieved, after the shutdown is carried out, the stress due to the fact that the processing load of a combination station system is increased is lowered, generating of pressure tank dirty oil is lowered, environmental pollution on a mining area is lowered, the cycles of tank opening and stuffy tank cleaning are effectively shortened, the production efficiency is improved, manpower and material resources are saved, and the social and economic benefits are obvious.
Description
technical field:
Petrochemical industry of the present invention, is specifically related to a kind of joint station electrical dehydrator pole plate chemical cleaning method.
background technology:
Electrical dehydrator is efficiently and smoothly operated is the important guarantee that outside joint station system, output oil water ratio is up to standard.Along with chemical flooding production technique is implemented, oil well pickling is returned the discharge opeing system of entering and is carried a large amount of carbonate dirt, polymkeric substance and clay bonds; Sewage works adds organic polyacrylamide flocculant, makes flco impurity enter oil phase by recovery; A large amount of proliferation of sulphate reducing bacteria makes system generate Iron sulfuret particle and mushroom metabolite thickness micelle etc. thereof, capital is swept along in oil water separation process at oil phase and is adhered to electrical dehydrator pole plate in electrical dehydrator, form strong conducting material, cause electrical dehydrator working efficiency reduce and fall power plant.Recover electrical dehydrator smooth running to need frequent clear tank, vexedly to wash, the over one hundred ton of each sump oil growing amount, land sump oil contaminate environment and subsequent disposal problem and appear suddenly, be not when joint station treatment capacity load is larger, frequent clear tank stops production totally unfavorable to joint station system production run stationarity.
It is cause one of ineffective major reason of electrical dehydrator that pole plate adsorbs into dirty material.Conventional solutions is electrical dehydrator stoppage in transit desilting, the vexed tank of steam, truck with boiler hot water injection.Normally annual 2 times of the electrical dehydrator clear tank cycle, chemical flooding Produced Liquid process joint station and accumulate the more clear tank number of times of joint station electrical dehydrator of ageing oil up to annual 6-12 time, chemical cleaning technique is widely used, generally for Industrial Boiler, petrochemical plant interchanger, circulating water system etc.Joint station electrical dehydrator not stopped transport the rarely seen report of pole plate chemical cleaning method, in order to solve the problems of the technologies described above, specially propose a kind of new technical scheme.
summary of the invention:
The object of the invention is to be maintained by chemical cleaning method to solve the problem that electrical dehydrator pole plate adsorbs into that dirty material causes electrical dehydrator fault and inefficiency, outer oil transportation water ratio exceeds standard, stops transport, frequent vexed tank cleans under normal production scenarios, and a kind of joint station electrical dehydrator pole plate chemical cleaning method is provided, it is easy to use, simple to operate, be easy to large-scale promotion application.
The technical solution used in the present invention is: a kind of joint station electrical dehydrator pole plate chemical cleaning method, the first step: add adhesive mud remover by turning oily dehydration pump entrance in the low wet oil of electrical dehydrator, described adhesive mud remover is cationic 1227 Biocidal algae-killing agents or isothiazolinone CIT/MIT any one, in the low wet oil of per kilogram, the dosage of adhesive mud remover is 100mg ~ 200mg, stops adding after pre-treatment 3-5 days; Second step: continue to add complexing agent and oil-soluble inhibitor in the low wet oil of electrical dehydrator, described complexing agent is any one in ATMP, thionamic acid, HEDP, ethylene diamine tetra methylene phosphonic acid EDTMPA, diethylene triamine pentamethylene phosphonic DTPMPA and polyamino polyether base methylenephosphonic acid PAPEMP, described inhibiter is preferred oil soluble corrosion inhibitor OEM, Qinhuangdao triumph chemical company produces, per kilogram low wet oil compound dosage is 1000mg ~ 2000mg, cleaning 5-10 days.
The mass ratio of described adhesive mud remover is: adhesive mud remover: 30-40%; Water: surplus.
Described complexing agent and the mass ratio of inhibiter are made up of following proportioning: complexing agent 30%-50%; Oil-soluble inhibitor: 1%-3%; Emulsifying agent: 0.5%-1%; Water: surplus, wherein emulsifying agent is preferred SP80.
The invention has the beneficial effects as follows:
1. can realize electrical dehydrator not stop transport cleaning, reduce stoppage in transit aftertreatment load and increase and bring pressure, flexible operation is easy, pollutes without landing oil, and the generation reducing pressure tank sump oil circulates, and protection of the environment, effectively reduces can opening, cleans the vexed tank cycle;
2. can implement chemical to add under normal production status, running practical situation according to joint station electrical dehydrator can intermittently add or add continuously, and use manpower and material resources sparingly, economic results in society are remarkable.
embodiment:
A kind of joint station electrical dehydrator pole plate chemical cleaning method, the first step: add adhesive mud remover by turning oily dehydration pump entrance in the low wet oil of electrical dehydrator, described adhesive mud remover is cationic 1227 Biocidal algae-killing agents or isothiazolinone CIT/MIT any one, in the low wet oil of per kilogram, the dosage of adhesive mud remover is 100mg ~ 200mg, stops adding after pre-treatment 3-5 days; Second step: continue to add complexing agent and oil-soluble inhibitor in the low wet oil of electrical dehydrator, described complexing agent is any one in ATMP, thionamic acid, HEDP, ethylene diamine tetra methylene phosphonic acid EDTMPA, diethylene triamine pentamethylene phosphonic DTPMPA and polyamino polyether base methylenephosphonic acid PAPEMP, described inhibiter is preferred oil soluble corrosion inhibitor OEM, Qinhuangdao triumph chemical company produces, per kilogram low wet oil compound dosage is 1000mg ~ 2000mg, cleaning 5-10 days.The mass ratio of described adhesive mud remover is: adhesive mud remover: 30-40%; Water: surplus.Described complexing agent and the mass ratio of inhibiter are made up of following proportioning: complexing agent 30%-50%; Oil-soluble inhibitor: 1%-3%; Emulsifying agent: 0.5%-1%; Water: surplus, wherein emulsifying agent is preferred SP80.
Certain joint station electrical dehydrator of embodiment 1. treatment station water drive slurry tank of disposing of sewage reclaims blending sump oil, and the clear tank of electrical dehydrator is vexed washes the frequency higher 1 time-2 times/January; After electrical dehydrator again vexed tank cleaning operation 10d, the outer oil transportation water ratio stage exceeds standard and is greater than 0.3%, and with the average outer oil transportation moisture content meter of whole day, the outer oil transportation water ratio of 60d is at 0.3-0.45% scope 35d; At 0.45-0.6% scope 15d, in acceptability limit, be less than 0.3% index is 10d;
According to the inventive method, first turn oily dehydration pump entrance and add adhesive mud remover in the low wet oil of electrical dehydrator, in the low wet oil of per kilogram, the dosage of adhesive mud remover is 100mg, and pre-treatment stopped adding after 5 days; Then continue to entering in the low wet oil of electrical dehydrator to add complexing agent and oil-soluble inhibitor compound, the low wet oil complexing agent of per kilogram and inhibiter dosage are 1500mg, clean after 6 days; Follow the tracks of the outer oil transportation water-cut variation of 30d.Result shows, after de-, outer oil transportation water ratio is 26d lower than 0.3% Con trolling index, and number of days ratio up to standard is increased to 86% by original 16%; The vexed frequency of washing of the clear tank of electrical dehydrator extends to 1 time/June.
In method described in above-described embodiment, adhesive mud remover is made up of following proportioning:
Adhesive mud remover 1227:40%
Water: surplus
Method complexing agent described in above-described embodiment and inhibiter are made up of following proportioning:
Complexing agent: 40%
Oil-soluble inhibitor: 2%
Emulsifying agent: 0.5%
Water: surplus
Complexing agent is thionamic acid, and inhibiter is OEM, and emulsifying agent is SP80.
Table 1 offer medicine before and after electrical dehydrator to discharge water main incrustation ion content
| Ionic type | Before dosing/mg/L | After dosing/mg/L |
| Si | 80.2 | 175.6 |
| Ca 2+ | 54.5 | 260 |
| Mg 2+ | 5.6 | 20 |
| Fe 2+ | 3.4 | 22.5 |
The dehydrating aging device process of certain oil field of embodiment 2. contains organic floculant impurity flco sump oil, because of its de-after oil phase water ratio exceed standard after introduce electrical dehydrator secondary treatment, cause electrical dehydrator Frequent trip to collapse electric field, outer oil transportation water ratio exceeds standard, the vexed tank of every two weeks once; Start to exceed standard at electrical dehydrator again vexed tank cleaning operation one week rear outer oil transportation water ratio, be greater than 0.5%, with the average outer oil transportation moisture content meter of whole day, inside and outside 30d, oil transportation water ratio is less than 0.5% scope 8d; Water ratio is greater than 0.5% for 22d, faces stopping transportation situation;
According to the inventive method, first turn oily dehydration pump entrance and add adhesive mud remover to entering in the low wet oil of electrical dehydrator, in the low wet oil of per kilogram, the dosage of adhesive mud remover is 200mg, and pre-treatment stopped adding after 5 days; Then continue to entering in the low wet oil of electrical dehydrator to add complexing agent and oil-soluble inhibitor compound, the low wet oil complexing agent of per kilogram and inhibiter dosage are 2000mg, clean after 6 days; Follow the tracks of the outer oil transportation water-cut variation of 30d.As a result, de-rear outer oil transportation water ratio is 25d lower than 0.5% Con trolling index; The vexed frequency of washing of the clear tank of electrical dehydrator extends to 1 time/season, quarterly reduce land sump oil discharge 600m
3.
In method described in above-described embodiment, adhesive mud remover is made up of following proportioning:
Adhesive mud remover 1227:30%
Water: surplus
Method complexing agent described in above-described embodiment and inhibiter are made up of following proportioning:
Complexing agent: 50%
Oil-soluble inhibitor OEM:2%
Emulsifying agent SP80:1%
Water: surplus
Complexing agent is HEDP and diethylene triamine pentamethylene phosphonic DTPMPA 1:1 composition in mass ratio.
Table 2 offer medicine before and after electrical dehydrator to discharge water main incrustation ion content
| Ionic type | Before dosing/mg/L | After dosing/mg/L |
| Si | 42.6 | 130.5 |
| Ca 2+ | 65 | 320 |
| Mg 2+ | 5.4 | 18.8 |
| Fe 2+ | 2.6 | 10.7 |
The each process point of certain field joint stations system of embodiment 3. discharges water sulphate reducing bacteria severe overweight, and the electrical dehydrator content of sulfate reducing bacteria that discharges water reaches 2.5 × 10
6individual/mL, its somatic cells and meta-bolites and Iron sulfuret are mixed to form satiny, gluing zoogloea in the enrichment of electrical dehydrator middle layer, and adhere to pole plate and water-oil interface instruction sensing equipment and to cause it automatically to control fluctuation large or malfunctioning, be badly in need of switching water trap to overhaul, reduce joint station system production stability.
According to the inventive method, first turn oily dehydration pump entrance and add adhesive mud remover to entering in the low wet oil of electrical dehydrator, in the low wet oil of per kilogram, the dosage of adhesive mud remover is 200mg, and pre-treatment stopped adding after 3 days; Then continue to entering in the low wet oil of electrical dehydrator to add complexing agent and oil-soluble inhibitor compound, the low wet oil complexing agent of per kilogram and inhibiter dosage are 1000mg, clean after 3 days; Electrical dehydrator instruction sensing equipment recovers normal use, and electrical dehydrator recovers smooth running.
In method described in above-described embodiment, adhesive mud remover is made up of following proportioning:
Adhesive mud remover isothiazolinone: 30%
Water: surplus
Method complexing agent described in above-described embodiment and inhibiter are made up of following proportioning:
Complexing agent: 30%
Oil-soluble inhibitor OEM:1%
Emulsifying agent SP80:0.5%
Water: surplus
Complexing agent is thionamic acid and HEDP 1:1 composition in mass ratio.
Table 3 offer medicine before and after electrical dehydrator to discharge water main incrustation ion content
| Ionic type | Before dosing/mg/L | After dosing/mg/L |
| Si | 15.5 | 90.8 |
| Ca 2+ | 70 | 198.6 |
| Mg 2+ | 15 | 55 |
| Fe 2+ | 8.6 | 28.3 |
Can realize electrical dehydrator in sum not stop transport cleaning, reduce stoppage in transit aftertreatment load and increase and bring pressure, flexible operation is easy, pollutes without landing oil, and the generation reducing pressure tank sump oil circulates, and protection of the environment, effectively reduces can opening, cleans the vexed tank cycle; Can implement chemical to add under normal production status, running practical situation according to joint station electrical dehydrator can intermittently add or add continuously, and use manpower and material resources sparingly, economic results in society are remarkable.
Claims (3)
1. a joint station electrical dehydrator pole plate chemical cleaning method, it is characterized in that: the first step: in the low wet oil of electrical dehydrator, add adhesive mud remover by turning oily dehydration pump entrance, described adhesive mud remover is cationic 1227 Biocidal algae-killing agents or isothiazolinone CIT/MIT any one, in the low wet oil of per kilogram, the dosage of adhesive mud remover is 100mg ~ 200mg, stops adding after pre-treatment 3-5 days; Second step: continue to add complexing agent and oil-soluble inhibitor in the low wet oil of electrical dehydrator, described complexing agent is any one or two or more compounds in ATMP, thionamic acid, HEDP, ethylene diamine tetra methylene phosphonic acid EDTMPA, diethylene triamine pentamethylene phosphonic DTPMPA and polyamino polyether base methylenephosphonic acid PAPEMP, described inhibiter is oil-soluble inhibitor OEM, per kilogram low wet oil compound dosage is 1000mg ~ 2000mg, cleaning 5-10 days.
2. joint station electrical dehydrator pole plate chemical cleaning method according to claim 1, is characterized in that: the mass ratio of described adhesive mud remover is: adhesive mud remover: 30-40%; Water: surplus.
3. joint station electrical dehydrator pole plate chemical cleaning method according to claim 1, is characterized in that: described complexing agent and the mass ratio of inhibiter are made up of following proportioning: complexing agent 30%-50%; Oil-soluble inhibitor: 1%-3%; Emulsifying agent: 0.5%-1%; Water: surplus, wherein emulsifying agent is SP80.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510291180.8A CN105002515B (en) | 2015-06-01 | 2015-06-01 | Multi-purpose station electric dehydrator pole plate chemical cleaning method |
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|---|---|---|---|
| CN201510291180.8A CN105002515B (en) | 2015-06-01 | 2015-06-01 | Multi-purpose station electric dehydrator pole plate chemical cleaning method |
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| CN105002515A true CN105002515A (en) | 2015-10-28 |
| CN105002515B CN105002515B (en) | 2018-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526149A (en) * | 2018-04-26 | 2018-09-14 | 东北石油大学 | The soft pipe water jet oil pipe cleaning device of self-advancing type |
Citations (3)
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|---|---|---|---|---|
| CN101318729A (en) * | 2008-07-03 | 2008-12-10 | 辽河石油勘探局 | Thick oil sewage water degreaser |
| CN102815806A (en) * | 2011-06-08 | 2012-12-12 | 克拉玛依市尤龙技术服务有限公司 | Dehydrated treatment method for aging oil |
| CN103505912A (en) * | 2013-10-23 | 2014-01-15 | 东北石油大学 | Method for inhibiting union station system sump oil recovery resulting in dehydration current increase |
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2015
- 2015-06-01 CN CN201510291180.8A patent/CN105002515B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318729A (en) * | 2008-07-03 | 2008-12-10 | 辽河石油勘探局 | Thick oil sewage water degreaser |
| CN102815806A (en) * | 2011-06-08 | 2012-12-12 | 克拉玛依市尤龙技术服务有限公司 | Dehydrated treatment method for aging oil |
| CN103505912A (en) * | 2013-10-23 | 2014-01-15 | 东北石油大学 | Method for inhibiting union station system sump oil recovery resulting in dehydration current increase |
Non-Patent Citations (1)
| Title |
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| 李金桂: "《清洗剂、除锈剂与防锈剂》", 31 January 2010, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526149A (en) * | 2018-04-26 | 2018-09-14 | 东北石油大学 | The soft pipe water jet oil pipe cleaning device of self-advancing type |
| CN108526149B (en) * | 2018-04-26 | 2023-08-15 | 东北石油大学 | Self-feeding soft pipe water jet oil pipe cleaning device |
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| CN105002515B (en) | 2018-04-20 |
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