CN1083850A - Technology of electric de-salting of mixed residue oil - Google Patents
Technology of electric de-salting of mixed residue oil Download PDFInfo
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- CN1083850A CN1083850A CN 93102196 CN93102196A CN1083850A CN 1083850 A CN1083850 A CN 1083850A CN 93102196 CN93102196 CN 93102196 CN 93102196 A CN93102196 A CN 93102196A CN 1083850 A CN1083850 A CN 1083850A
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- residual oil
- electric
- emulsion splitter
- water
- injection rate
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Abstract
Processing method provided by the present invention comprises the secondary electric desalting, and firsts and seconds is added electric field all, and one-level is annotated emulsion splitter and washing water, and processing condition are strength of electric field 0.08-1.2KV/cm
2, 120～145 ℃ of desalination temperature; Working pressure 0.3-0.8MPa, but water filling for purifying waste water, pH5-9, water injection rate are 5-15% (wt%); Mixture strength is 0.05-0.20MPa; Emulsion splitter SN2040 or Sh811, injection rate is 20～50ppm, the highfield residence time is 3-6min, right＞350 ℃ residual oil electric desalting, its total ratio of desalinization can reach more than 90%, can avoid separation column tower tray salt crust when mixing refining residual oil, and alleviate poisoning of catalyst, prolong the production cycle of catalytic cracking unit for refinery catalytic cracking unit.
Description
The invention belongs to the refining of petroleum field, refer more particularly to residual oil technology of electric de-salting process.
Catalytic cracking unit generally will be mixed refining residual oil in petroleum refining process as everyone knows, and the salts contg of residual oil is than higher, usually at 5～30mg/l, because the saltiness height usually causes catalytic cracking unit separation column tower tray salt crust, the pollution of catalyzer, poisoning, shorten the life cycle of catalyzer, cause production cost to increase.Thereby all oil refining production equipment residual oil high to salts contg of mixing refining residual oil, should before entering catalytic cracking unit, residual oil to carry out desalting treatment.Be useful on the heavy asphaltic oil desalination/dehydration in oil field from the reported in literature situation; There is deemulsification to remove bituminous matter and also reclaims deasphalted oil, the technology of bituminous matter and emulsified water respectively; Oil-containing sludge dewatering technology; The multistage desalination of heating dehydration of tar emulsion and crude oil, dewatering process are not seen the play-by-play of relevant residual oil technology of electric de-salting as yet.
The objective of the invention is to utilize existing electric desalting apparatus in this technological process, to adopt SH811 or SN22040 emulsion splitter that the residual oil ratio of desalinization is reached more than 90%, prolong the production cycle of catalytic cracking unit, reduce production costs.
A
1Residual oil
A
2Residual oil after the desalination
A
3Water
A
4Emulsion splitter
V
1The residual oil storage tank
V
2The residual oil heating tank
V
3-5The residual oil electrical desalter
B
1Residual oil pump
B
2Waterflood pump
B
3Injectant pump
P
1-6Tensimeter
T
1-4Thermometer
The present invention sees accompanying drawing 1: storage tank V1In residual oil (A1), through residual oil pump B1Heating tank V is removed in extraction2, advance again V3Electrical desalter advances V3Front injection washings and demulsifier, after the one-level electro-desalting, residual oil advances V4The secondary electrical desalter enters three grades of electrical desalter (V again when being necessary5), the residual oil after the desalination is at V then1In with desalination before the residual oil heat exchange go out device.
One-level, secondary or three grades of electrical desalter strength of electric field:
0.08-1.2KV/cm
2
Desalination temperature: 120-145 ℃
Working pressure: 0.3-0.8MPa
Injection water quality: purify waste water PH5-9
Water injection rate: 5-15%
Mixture strength: 0.05-0.20MPa(is that pipeline pressure is poor before and after the mixing tank, also claims polyhybrid pressure reduction)
Emulsion splitter model SN22040(commercial goods)
Its quality is: hydroxyl value is not more than 56.00mgKOH/g
Colourity is not more than No. 300
Zero pour is 25～50 ℃
Emulsion splitter model SH811(commercial goods)
Its quality is: hydroxyl value≤56.00mgKOH/g
The outward appearance homogeneous transparent: solvability is water-soluble no floss.
The emulsion splitter injection rate is 20-50ppm
The highfield residence time is 3～6min;
Greater than 350 ℃ of residual oil SH811, total ratio of desalinization reaches more than 90%.
The present invention adopted commercial goods emulsion splitter SN22040 or SH811 make＞350 ℃ of total ratio of desalinization of residual oil can reach about 90%, for the residual oil electric desalting provides optimum emulsion splitter and optimized process conditions, thereby can avoid catalytic cracking fractionating tower tower tray salt crust and alleviate poisoning of catalyst.
Long residuum is with after residual oil mixes, with 10 liters/time treatment capacity, through B
1Squeeze into V
2, temperature rises to 120～145 ℃ and advances desalter V
3, use emulsion splitter SN22040, injection rate 20～50ppm, the injection water quality PH5-9 that purifies waste water, injection rate 5～15%(wt%) is mixed pressure reduction 0.05～0.2MPa, strength of electric field 0.8～1.2KV/cm
2, the highfield residence time 3～6min, the secondary desalting effect sees Table 1.
Table 1
| Residual oil saltiness mg/L | Ratio of desalinization % | Total ratio of desalinization | Moisture % | ||||
| Before taking off | One takes off | Two take off | One takes off | Two take off | ％ | One-level | Secondary |
| 11.95 | 8.32 | 1.19 | 30.4 | 85.7 | 90.0 | 3.00 | 1.80 |
Long residuum is with after residual oil mixes, with 10 liters/time treatment capacity, with the combination of example 1 optimization of process conditions, through the secondary desalination, total ratio of desalinization sees Table 2 more than 90%:
Long residuum mixes with residual oil, with 10 liters/time treatment capacity, with B
1Squeeze into a jar V
2, temperature rises to 120-145 ℃ and advances desalter V
3, V
4, use commercial goods emulsion splitter SH811, injection rate 20-50ppm, the injection water quality PH5-9 that purifies waste water, injection rate 5-15%(wt), mix pressure reduction 0.05～0.2MPa, strength of electric field 0.8～1.2KV/cm
2, the highfield residence time 3～6min, the secondary desalting effect sees Table 3:
Embodiment 4
Long residuum mixes with residual oil, with 10 liters/time treatment capacity with example 3 optimization of process conditions combinations, through the secondary desalination, total ratio of desalinization the results are shown in Table 4 more than 90%:
Claims (2)
1, a kind of employing emulsion splitter SN22040 or Sh811 technology of electric de-salting method is characterized in that being used for the residual oil electric desalting, storage tank V
1Middle residual oil is through residual oil pump B
1Heating tank V is removed in extraction
2, advance V again
3Electrical desalter advances jar preceding washing water and the emulsion splitter of injecting, and after the one-level electric desalting, residual oil advances V
4Secondary electrical desalter or be necessary to enter three grades of desalter V
5, desalination residual oil goes out device then.
2, residual oil technology of electric de-salting method according to claim 1 is characterized in that processing condition: strength of electric field: 0.08-1.2KV/cm
2; Desalination temperature: 120～145 ℃; Working pressure: 0.3-0.8Mpa; Injection water quality: PH5-9 purifies waste water; Water injection rate is 5-15%(wt%); Mixture strength 0.05-0.20Mpa; Emulsion splitter injection rate: 20-50ppm; The highfield residence time: 3～6min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93102196 CN1032434C (en) | 1993-03-04 | 1993-03-04 | Technology of electric de-salting of mixed residue oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93102196 CN1032434C (en) | 1993-03-04 | 1993-03-04 | Technology of electric de-salting of mixed residue oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1083850A true CN1083850A (en) | 1994-03-16 |
| CN1032434C CN1032434C (en) | 1996-07-31 |
Family
ID=4983990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93102196 Expired - Fee Related CN1032434C (en) | 1993-03-04 | 1993-03-04 | Technology of electric de-salting of mixed residue oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1032434C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373068A (en) * | 2010-08-19 | 2012-03-14 | 中国石油化工股份有限公司 | Salt coagulation inhibitor and preparation method thereof |
| CN102433155A (en) * | 2010-09-29 | 2012-05-02 | 中国石油化工股份有限公司 | Method for lightening salt deposition of catalytic fractionating tower |
| CN105536887A (en) * | 2016-02-18 | 2016-05-04 | 中国庆华能源集团有限公司 | Regeneration method for salt-coagulated shift catalyst |
| CN108929718A (en) * | 2017-05-26 | 2018-12-04 | 中国石油天然气股份有限公司 | Desalting system and crude oil desalting method |
| CN110055096A (en) * | 2019-05-09 | 2019-07-26 | 中石化炼化工程（集团）股份有限公司 | The method for reducing the method and its system and residual hydrogenation of tenor in residual oil |
-
1993
- 1993-03-04 CN CN 93102196 patent/CN1032434C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373068A (en) * | 2010-08-19 | 2012-03-14 | 中国石油化工股份有限公司 | Salt coagulation inhibitor and preparation method thereof |
| CN102373068B (en) * | 2010-08-19 | 2013-09-11 | 中国石油化工股份有限公司 | Salt coagulation inhibitor and preparation method thereof |
| CN102433155A (en) * | 2010-09-29 | 2012-05-02 | 中国石油化工股份有限公司 | Method for lightening salt deposition of catalytic fractionating tower |
| CN102433155B (en) * | 2010-09-29 | 2014-01-15 | 中国石油化工股份有限公司 | Method for lightening salt deposition of catalytic fractionating tower |
| CN105536887A (en) * | 2016-02-18 | 2016-05-04 | 中国庆华能源集团有限公司 | Regeneration method for salt-coagulated shift catalyst |
| CN108929718A (en) * | 2017-05-26 | 2018-12-04 | 中国石油天然气股份有限公司 | Desalting system and crude oil desalting method |
| CN108929718B (en) * | 2017-05-26 | 2020-12-01 | 中国石油天然气股份有限公司 | Desalting system and crude oil desalting method |
| CN110055096A (en) * | 2019-05-09 | 2019-07-26 | 中石化炼化工程（集团）股份有限公司 | The method for reducing the method and its system and residual hydrogenation of tenor in residual oil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1032434C (en) | 1996-07-31 |
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