CN202359076U - Crude oil deacidification device - Google Patents
Crude oil deacidification device Download PDFInfo
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- CN202359076U CN202359076U CN2011202882249U CN201120288224U CN202359076U CN 202359076 U CN202359076 U CN 202359076U CN 2011202882249 U CN2011202882249 U CN 2011202882249U CN 201120288224 U CN201120288224 U CN 201120288224U CN 202359076 U CN202359076 U CN 202359076U
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- crude oil
- alkaline residue
- deacidification
- acidying agent
- packing tower
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Abstract
The utility model provides a crude oil deacidification device, which comprises a deacidification agent tank, a crude oil tank, another crude oil tank, an alkaline residue tank, a deacidification agent conveying pump, a crude oil conveying pump, a filler tower and a settlement separation device, wherein the deacidification agent tank and the crude oil tank are used for accommodating a deacidification agent and crude oil to be treated respectively; the other crude oil tank and the alkaline residue tank are used for accommodating the crude oil after deacidification treatment and alkaline residue after deacidification respectively; the deacidification agent conveying pump and the crude oil conveying pump are connected to the deacidification agent tank and the crude oil tank respectively; filler is arranged in the filler tower; the deacidification agent conveying pump and the crude oil conveying pump are used for feeding the deacidification agent and the crude oil into the filler tower respectively; the deacidification agent and the crude oil react in the filler tower; and the settlement separation device is connected to the filler tower to receive deacidification agent and crude oil mixed liquid from the filler tower after reaction. In the crude oil deacidification device provided by the utility model, the filler tower is adopted as a chemical reactor, so that the crude oil and the deacidification agent can fully react to achieve a good deacidification effect. In addition, an emulsification phenomenon can be obviously improved through use of the filler tower.
Description
Technical field
The utility model generally relates to chemical reaction equipment, particularly relates to the crude oil deacidification device.
Background technology
Along with the national economy stable, sustained and rapid growth, the demand of China's oil is also increasing year by year.On the other hand, along with the degree of depth exploitation of petroleum resources, the output of crude oil with high acid value increases just year by year.Crude oil with high acid value not only acid number is higher, and contains plurality of impurities, therefore refine processing difficulties, but its price advantage is very obvious, so still extensively adopted.Discover, when the acid number of crude oil is higher than 0.3mg (KOH)/g, will affect refining process.If acid value for crude oil is higher than 0.5mg (KOH)/g, then can bring obvious corrosion to carried of crude oil and refining equipment.
Mainly comprise acidic cpds such as naphthenic acid, solid fatty acid, aromatic acid and phenols in the crude oil, wherein naphthenic acid is topmost acidic oxide, accounts for about 90% of former acidity of oil oxygenatedchemicals.When temperature can cause the violent corrosion of naphthenic acid in 210～420 ℃ of scopes, and heavy corrosion mainly occurs in liquid phase.
Therefore, in refining equipment, naphthenic acid corrosion mainly occurs in high temperature position, as the tower wall of the outlet of the normal pressure transfer line of atmospheric and vacuum distillation unit, pressure-reducing line for oil-transferring, atmospheric pressure kiln and decompression process furnace, ordinary decompression column charging place, subtract three-way etc.; In catalytic cracking and coker, boiler tube, separation column and corresponding heat-exchange equipment etc. that corrosion location has High Temperature and Heavy Oil pipeline, cracking process furnace mainly take place.In addition, occur emulsion aborning easily, cause the product separation difficulty.Even a spot of naphthenate also can influence the quality of oil product, cause oil product thermostability variation, reduce the use properties of oil product.Do not handle if before refining, do not carry out depickling, the distillate of subsequent production also can contain higher acid number, thereby therefore the quality of remote effect oil product need carry out depickling to crude oil and handle.
Before the utility model, there are not special crude oil deacidification device and corresponding method.No matter being in experiment or producing, all is simply crude oil and de-acidying agent directly to be joined in the container basically, and they are reacted statically.Yet, do making that the reaction of crude oil and de-acidying agent is insufficient like this, and emulsion is serious.
The utility model content
To the problems referred to above, the purpose of the utility model is, a kind of reaction that can make crude oil and de-acidying agent crude oil deacidification apparatus and method more fully are provided.
For realizing above-mentioned purpose, the utility model provides a kind of crude oil deacidification device, comprising: be respectively applied for the de-acidying agent jar and the petroleum tank that hold de-acidying agent and pending crude oil; Be respectively applied for petroleum tank and alkaline residue jar after the depickling of crude oil and alkaline residue after holding depickling and handling; Be connected to the de-acidying agent transmission pump and the former oil transfer pump of de-acidying agent jar and petroleum tank respectively; Packing tower is provided with filler in the packing tower, de-acidying agent transmission pump and former oil transfer pump are sent de-acidying agent and crude oil into packing tower respectively, and de-acidying agent and crude oil react in packing tower; And settling separation device, settling separation device is connected to packing tower, to receive reacted de-acidying agent and the crude oil mixed liquor from packing tower.
Preferably, de-acidying agent and crude oil are sent into packing tower from the top of packing tower concurrently, or send into packing tower from the top and the bottom of packing tower respectively with driving in the wrong direction.
Preferably, filler is at least a in Raschig ring, Pall ring, barrier type filler, Berl saddle packing, Intalox saddle(packing), screen waviness packings and the Mellapak packing.
Preferably, in settling separation device, be provided with battery lead plate, apply electric field with mixed solution to de-acidying agent and crude oil.
Preferably, also comprise the alkaline residue regenerating unit, it comprises: the alkaline residue transmission pump that is connected to the alkaline residue jar; Carbon dioxide air source; Regenerator column, said alkaline residue transmission pump and said carbon dioxide air source are connected to said regenerator column respectively, so that alkaline residue and carbonic acid gas in said regenerator column chemical reaction take place; And the regeneration separating tank that is connected with said regenerator column, be used to admit regeneration product standing separation therein.
The utility model has also been conceived a kind of crude oil deacidification method, and this method comprises the steps: de-acidying agent is delivered into packing tower from the de-acidying agent jar through the de-acidying agent transmission pump; Acid-containing raw oil is delivered into packing tower from petroleum tank through former oil transfer pump; Make de-acidying agent and acid-containing raw oil that chemical reaction take place in packing tower; After question response finishes, make the mixed solution of de-acidying agent and crude oil get into settling separation device, make mixed solution behind settling separation device, be divided into profit two phases, the upper strata is the crude oil after the depickling, and lower floor is an alkaline residue; And the crude oil after the depickling and alkaline residue transferred to petroleum tank and alkaline residue jar after the depickling respectively.
Preferably, also comprise the step that adds non-emulsifier, non-emulsifier and de-acidying agent together add or directly add in the settling separation device.
Preferably, also comprise the step that at settling separation device (6) mixed solution of de-acidying agent and crude oil is applied electric field through battery lead plate (8).
Preferably, depickling is selected from NaOH, Na
2CO
3, at least a in the thanomin, diethylolamine, ammoniacal liquor-ethanol.
Preferably, comprise also making alkaline residue regenerated process that it comprises: through the alkaline residue transmission pump alkaline residue is sent into regenerator column; To feed regenerator column from the dioxide gas of carbon dioxide air source; Make alkaline residue and carbonic acid gas in said regenerator column, chemical reaction take place; And after the question response end, make reacted alkaline residue get into alkaline residue separating tank standing separation.
In the crude oil deacidification device of the utility model, adopted packing tower,, reached good deacidification effect so crude oil and de-acidying agent are fully reacted as reaction apparatus.In addition, the use of packing tower can also significantly improve emulsion.
The crude oil deacidification device of the utility model preferably comprises the alkaline residue regenerating unit, and it utilizes carbonic acid gas that alkaline residue is regenerated.The flue gas that utilization contains carbonic acid gas is handled alkaline residue, meets the low-carbon environment-friendly economy development requirement.In addition, all right recycle and reuse of de-acidying agent has reduced the manipulation cost.
Description of drawings
Fig. 1 is the crude oil deacidification schematic representation of apparatus according to the utility model preferred embodiment; And
Fig. 2 is the synoptic diagram that can be used for the regenerating unit of the utility model crude oil deacidification method.
Embodiment
Fig. 1 shows a kind of crude oil deacidification device of testing usefulness, and it mainly comprises: petroleum tank 6, settling separation device 7, battery lead plate 8 and alkaline residue jar 9 after de-acidying agent jar 1, de-acidying agent transmission pump 2, petroleum tank 3, former oil transfer pump 4, packing tower 5, the depickling.
As its name suggests, de-acidying agent jar 1 is respectively applied for petroleum tank 3 and holds de-acidying agent and pending crude oil, and petroleum tank 6 then is respectively applied for crude oil and the alkaline residue that holds after depickling is handled with alkaline residue jar 9 after the depickling.De-acidying agent transmission pump 2 is connected to de-acidying agent jar 1 with the transmission de-acidying agent, and former oil transfer pump 4 then is connected to petroleum tank 3 to transmit pending crude oil.
Packing tower is with the mass transfer apparatus of the filler in the tower as contact member between gas-liquid two-phase, is applied to operations such as gas absorption, distillation, extraction usually.Never the someone expected packing tower is used as the reaction apparatus that crude oil deacidification is used in the past, so this is that the utility model is different from an important characteristic in the past.
Settling separation device 6 is connected to packing tower 5, to receive reacted de-acidying agent and the crude oil mixed liquor from packing tower 5.Reacted de-acidying agent and crude oil mixed liquor carry out separating of crude oil and water through heat sink falling in settling separation device.
Fig. 2 shows a kind of regenerating unit, and it can be used in combination with above-mentioned crude oil deacidification device, makes alkaline residue regeneration.This alkaline residue regenerating unit mainly comprises: alkaline residue jar to be generated 10, alkaline residue transmission pump 11, regenerator column 12, regeneration separating tank 13 and dioxide bottle 14.Preferably, also be provided with the gas meter 15 that is used to measure gas flow.
Alkaline residue jar 10 to be generated is used for holding pending alkaline residue, also can be merged into one with aforesaid alkaline residue jar 9.Regenerator column 12 is the Analytic Towers that supply chemical reaction to use.Alkaline residue transmission pump 11 is connected to the top of regenerator column 12, so that alkaline residue to be generated is sent into regenerator column 12.Dioxide bottle 14 is communicated to the bottom of regenerator column 12, so that dioxide gas is fed regenerator column.The bottom of regenerator column 12 also is connected to regeneration separating tank 13, so that regeneration product is entered wherein.
The technological process that the crude oil deacidification device that utilizes the utility model carries out crude oil deacidification below will be described.
At first; The de-acidying agent (for example NaOH) that will be heated to certain temperature (for example 65 ℃) delivers into packing tower 5 from de-acidying agent jar 1 through de-acidying agent transmission pump 2, and the acid-containing raw oil that will be heated to certain temperature (for example 65 ℃) delivers into packing tower 5 from petroleum tank 3 through former oil transfer pump 4.The volume ratio of de-acidying agent and acid-containing raw oil is 1: 2, adds the non-emulsifier of 50mg/L, and the temperature of reaction in the packing tower is 65 ℃, and reaction time is 30 seconds.Then, after question response finished, the mixed solution of de-acidying agent and crude oil got into settling separation device; Temperature is 95 ℃ in the settling separation device; Heat sink 30 minutes (like the need electric field action, then apply electric field through battery lead plate 8, make mixed solution under certain strength of electric field, act on for some time) fall.At last, mixed solution is divided into profit two phases behind settling separation device, and the upper strata is the crude oil after the depickling, and lower floor is an alkaline residue, respectively they is transferred to petroleum tank 6 and alkaline residue jar 9 after the depickling.Note that the various processing parameters of mentioning all are given by way of example, can change according to concrete situation fully here.
De-acidying agent can be selected NaOH, Na for use
2CO
3, at least a in the thanomin, diethylolamine, ammoniacal liquor-ethanol.In other words, can use wherein any one, also can be with any several kinds of composite forming.
Non-emulsifier can adopt positively charged ion non-emulsifier, nonionic non-emulsifier or by positively charged ion non-emulsifier and the composite non-emulsifier that forms of nonionic non-emulsifier, and is wherein best with positively charged ion non-emulsifier and composite non-emulsifier dehydration, the deacidification effect that forms of nonionic non-emulsifier especially.
In the crude oil deacidification process, de-acidying agent NaOH and naphthenic acid generation neutralization reaction generate naphthenate, the NaOH that only needs equimolar amount on the theoretical value just can be fully and naphthenic acid neutralize.But the applicant finds in actual deacidification, to be accompanied by the generation of profit breast phenomenon; Alkali lye can not with the complete mass transfer reaction of the naphthenic acid in the crude oil; Therefore de-acidying agent is preferably excessive, and for example, the mol ratio of de-acidying agent and naphthenic acid had reasonable deacidification effect at 1.3 o'clock.
Research shows that also settling temperature is very obvious to the influence of dehydrating effect, and the rising of temperature can let the non-emulsifier dewatering efficiency improve greatly.Different therewith is, the depickling temperature in the packing tower 6 then is not high more good more, and roughly effect is best in the time of 65 ℃, and temperature is high again, and acid value for crude oil can rise on the contrary to some extent.
In addition, the strength of electric field that is applied by battery lead plate 8 also has certain influence to the crude oil deacidification effect, when strength of electric field when being 600V/cm～800V/cm effect best.
Discharging is used for crude oil is carried out comprising because the water-soluble naphthenate that generates behind naphthenic acid in the crude oil and the alkali reaction contains unreacted alkali in addition in the alkali lye after depickling is handled, if directly will cause serious destruction to environment.Therefore, need handle the alkaline residue that generates, adopt the sulfuric acid neutralisation to handle alkaline residue traditionally, this method is more serious to corrosion on Equipment, and process cost is higher.In view of this, the applicant visualizes by aforesaid regenerating unit the alkaline residue that has generated is carried out manipulation of regeneration.
Specifically, the alkaline residue in the alkaline residue jar 10 is heated to 40 ℃, will for example sends into regenerator column 12 through alkaline residue transferpump 11 again for the alkaline residue of 40ml volume; Simultaneously, will feed from the dioxide gas of dioxide bottle 14 bottom from regenerator column 12, its volumetric flow rate is 0.25ml/min.The entire reaction carbonization time is 10 minutes, and reacted alkaline residue gets into alkaline residue separating tank 13 standing separation 1 hour.Equally, the various processing parameters of mentioning here all are given by way of example, can change according to concrete situation fully.
Since the acidity of naphthenic acid than carbonic acid a little less than, therefore consider to adopt CO
2Alkali lye to containing naphthenate is handled, and reaction generates naphthenic acid.After leaving standstill, contain the oil phase and the aqueous phase separation of naphthenic acid.The source of carbonic acid gas is more extensive in the refinery, as containing abundant carbonic acid gas resource in the catalytic cracked regenerated stack gas.The flue gas that utilization contains carbonic acid gas is handled alkaline residue, meets the low-carbon environment-friendly economy development requirement.In addition, all right recycle and reuse of de-acidying agent has reduced the manipulation cost.
Applicant's research shows, along with the increase of recovery time, CO
2With deepening continuously of sodium napthionate reaction, the naphthenic acid of generation increases, and the concentration of naphthenate constantly reduces in the alkali lye, and the recovery of naphthenic acid improves constantly, and the pH value of alkali lye also constantly reduces.
In addition, along with CO
2The CO that produces in the increase of volumetric flow rate, regenerator column
2Bubble also constantly increases, and has increased contact area, has promoted the carrying out of reaction, and therefore regeneration back alkali lye pH value constantly descends, and the recovery of naphthenic acid improves constantly.
Have, along with the rising of temperature, the pH of alkali lye increases to some extent after the manipulation of regeneration again, and the naphthenic acid recovery reduces, because along with the rising of temperature, CO
2The solubleness of gas in liquid phase reduces, with the level of response reduction of cyclocarboxylic acid sodium, in addition because CO
2With alkali reaction be thermopositive reaction, the forward that the rising of temperature possibly suppress reaction carries out.
It should be understood that; Though above combination preferred embodiment is described the crude oil deacidification apparatus and method of the utility model, is familiar with those of ordinary skill in the art and can on the basis of above disclosure, makes various variations that are equal to and change fully.For example, except being used for experiment, can also the crude oil deacidification device that disclosed be used for suitability for industrialized production; Except Raschig ring, it is also conceivable that the filler that uses other type, at least a as in Pall ring, barrier type filler, Berl saddle packing, Intalox saddle(packing), screen waviness packings and the Mellapak packing; Crude oil and de-acidying agent also can be sent into packing tower from the top and the bottom of packing tower respectively with driving in the wrong direction, perhaps also can send into packing tower from the bottom of packing tower concurrently; Non-emulsifier can together add in the packing tower with de-acidying agent, also can directly add in the settling separation device; Dioxide bottle 14 can replace with other suitable carbon dioxide air source.Therefore, the protection domain of the utility model is not limited to aforesaid preferred embodiment, but should be limited appended claims.
Claims (5)
1. a crude oil deacidification device is characterized in that, comprising:
Be respectively applied for the de-acidying agent jar (1) and the petroleum tank (3) that hold de-acidying agent and pending crude oil;
Be respectively applied for petroleum tank (6) and alkaline residue jar (9) after the depickling of crude oil and alkaline residue after holding depickling and handling;
Be connected to the de-acidying agent transmission pump (2) and the former oil transfer pump (4) of said de-acidying agent jar (1) and said petroleum tank (3) respectively;
Packing tower (5) is provided with filler in the said packing tower, and said de-acidying agent transmission pump (2) and said former oil transfer pump (4) are sent de-acidying agent and crude oil into said packing tower respectively, and de-acidying agent and crude oil react in said packing tower; And
Settling separation device (6), said settling separation device is connected to said packing tower, to receive reacted de-acidying agent and the crude oil mixed liquor from said packing tower.
2. crude oil deacidification device as claimed in claim 1 is characterized in that, de-acidying agent and crude oil are sent into packing tower from the top of said packing tower (5) concurrently, or sends into packing tower from the top and the bottom of packing tower respectively with driving in the wrong direction.
3. crude oil deacidification device as claimed in claim 1 is characterized in that, said filler is at least a in Raschig ring, Pall ring, barrier type filler, Berl saddle packing, Intalox saddle(packing), screen waviness packings and the Mellapak packing.
4. crude oil deacidification device as claimed in claim 1 is characterized in that, in said settling separation device (6), is provided with battery lead plate (8), applies electric field with the mixed solution to de-acidying agent and crude oil.
5. crude oil deacidification device as claimed in claim 1 is characterized in that, also comprises the alkaline residue regenerating unit, and it comprises:
Be connected to the alkaline residue transmission pump (11) of alkaline residue jar;
Carbon dioxide air source (14);
Regenerator column (12), said alkaline residue transmission pump and said carbon dioxide air source are connected to said regenerator column respectively, so that alkaline residue and carbonic acid gas in said regenerator column chemical reaction take place; And
The regeneration separating tank (13) that is connected with said regenerator column (12) is used to admit regeneration product standing separation therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202882249U CN202359076U (en) | 2011-08-09 | 2011-08-09 | Crude oil deacidification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202882249U CN202359076U (en) | 2011-08-09 | 2011-08-09 | Crude oil deacidification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202359076U true CN202359076U (en) | 2012-08-01 |
Family
ID=46570279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202882249U Withdrawn - After Issue CN202359076U (en) | 2011-08-09 | 2011-08-09 | Crude oil deacidification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202359076U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925208A (en) * | 2011-08-09 | 2013-02-13 | 华东理工大学 | Crude oil deacidification apparatus and method |
| CN111019694A (en) * | 2019-12-02 | 2020-04-17 | 广东石油化工学院 | Inferior oil on-way magnetic treatment system |
-
2011
- 2011-08-09 CN CN2011202882249U patent/CN202359076U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925208A (en) * | 2011-08-09 | 2013-02-13 | 华东理工大学 | Crude oil deacidification apparatus and method |
| CN111019694A (en) * | 2019-12-02 | 2020-04-17 | 广东石油化工学院 | Inferior oil on-way magnetic treatment system |
| CN111019694B (en) * | 2019-12-02 | 2022-03-15 | 广东石油化工学院 | Inferior oil on-way magnetic treatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120801 Effective date of abandoning: 20160629 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |