CN1087001C - Process for treating scum of scum pool in oil refinery - Google Patents
Process for treating scum of scum pool in oil refinery Download PDFInfo
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- CN1087001C CN1087001C CN98110574A CN98110574A CN1087001C CN 1087001 C CN1087001 C CN 1087001C CN 98110574 A CN98110574 A CN 98110574A CN 98110574 A CN98110574 A CN 98110574A CN 1087001 C CN1087001 C CN 1087001C
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- silica frost
- freezing
- scum silica
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Abstract
The present invention provides a process for treating the scum of a scum pool in an oil refinery. The process comprises the steps that the scum in the oil refinery is frozen, stirred and dehydrated; the scum in the oil refinery is initially separated from water and oil on a belt conveyer; the scum in the oil refinery is refined in a refining tank; refined unqualified scum in the oil refinery is circulatively frozen, stirred and dehydrated. Compared with the prior art, the process for treating the scum of a scum pool in an oil refinery of the present invention has the characteristics of reasonable technological design, simple equipment structure, easy processing, high automation, high dehydrating efficiency, waste oil recovery and utilization, energy saving, low environment pollution, etc. Therefore, the present invention has a good generalization and use value.
Description
The present invention relates to a kind of chemical industry equipment, specifically a kind of processed technology of handling moisture oil refining scum silica frost.
Exploit to the course of conveying of refinery from subterranean at crude oil, in order to reduce the viscosity of crude oil, oil recovery unit will add a large amount of emulsifying agents in oil well, heavy-gravity crude oil forms oil-in-water or water in oil emulsified crude oil with the stronger avidity of water generates under the effect of emulsifying agent, crude oil viscosity after emulsification that underground viscosity is high reduces greatly thereby can increase the oil well crude oil yield, can improve the oil pipeline transport capacity after entering oil pipeline, reduce and carry cost.But, after the crude oil that contains a large amount of emulsifying agents and water enters refinery, at first to carry out breaking emulsion and dewatering and handle refining oil first being processed.
In the prior art, the breakdown of emulsion of emulsified crude oil and dehydration mainly are by static dehydration, static dehydration and chemical dehydration, static dehydration be with emulsified crude oil deposit in make in the storage tank its in static process, allow water under the effect of gravity with crude separation, the efficient of present this dewatering dehydration is very low, general employing is static dehydration and chemical dehydration for back two kinds, the static dehydration is to add electrostatic field in the emulsified crude oil storage tank, under the discharge process of positive and negative electrode, make and be with positive and negative charge oil molecule and water molecules to move to realize oily water separation to positive and negative electrode respectively respectively, this method need increase the direct current controller switching equipment, and facility investment is bigger.Chemical dehydration is to add chemical demulsifier in emulsified crude oil, mixes through agitator, and chemical demulsifier destroys the polarity of emulsifying agent, its surface tension is reduced lose emulsifying effect, makes oily water separation.Various dewaterings above-mentioned in actual production are all using, but it is big still to contain some water content in the sewage that discharges after separation, and contain a large amount of emulsifying agents, the emulsified crude oil of emulsion splitter and mechanical impurity, be commonly referred to moisture sump oil scum silica frost or moisture oil refining scum silica frost, its oleaginousness is generally at 1-50%, because the recycling of the moisture sump oil in the waste discharge is difficulty quite, the general discharge of wastewater of just regarding falls, but for various reasons, little when big during oleaginousness in the waste water, thereby, sump oil contained in the waste discharge not only produces very serious pollution to surrounding environment, and cause the waste of a large amount of valuable sump oils, at present, also there is not good method to solve the taking back and process of moisture sump oil in the waste water.
Purpose of the present invention overcomes the deficiencies in the prior art exactly, provides an oil refining scum silica frost by freezing stirring extrusion machinery breakdown of emulsion and the refining dehydration of heating to reclaim technology.
The objective of the invention is to realize in the following manner: the scum silica frost of will refining oil send into one with freezing chuck and the dehydration scraper plate freezing extruding stirring-type water extracter in, be reduced to 1-6 ℃ by freezing temperature with moisture sump oil, the density maximum of water under this temperature and surface tension minimum, the viscosity of sump oil improves simultaneously, the surface tension of sump oil is also minimum, at refrigerated simultaneously, the stirring extruding that utilizes scraper-type to stir rotor segment in the lyophilization machine will be distributed in the oil film deformation fracture that is surrounded by emulsifying agent and emulsion splitter in the sump oil, realize the initial gross separation of profit, and then in refinery pit, dewater through heated and stirred, the oil refining scum silica frost is made with extra care the standard that reaches oil refining.
Accompanying drawing is the structural representation of scum of scum pool in oil refinery treatment unit.
Explain below with reference to Figure of description process for treating scum of scum pool in oil refinery of the present invention being done.
Process for treating scum of scum pool in oil refinery of the present invention, this technology comprises the following steps:
(1) the oil refining scum silica frost pump into-freezing extruding stirring-type water extracter carries out freezing stirring processed;
(2) the oil refining scum silica frost of discharging from the discharge port of freezing extruding stirring-type water extracter is fallen on the rotary conveyor, and profit is initial gross separation on rotary conveyor, divides dried up back oil refining scum silica frost to send into oil refining scum silica frost refinery pit from the upper end of rotary conveyor and carries out refinement treatment;
(3) the further processed of oil refining scum silica frost heated and stirred in refinery pit, the qualified oil refining scum silica frost after the dehydration is refined oil by pumping oil refining operation on the top of refinery pit;
(4) not conforming to of refinery pit bottom respectively refines oil scum silica frost and sends the freezing again stirring processed of freezing extruding stirring-type water extracter in the bottom of refinery pit back to by the circulation transfer pump;
2. be used to realize the device of the described technology of claim 1, this device comprises:
A motor 1 is connected with a step-down gear 2 by shaft coupling;
A freezing extruding stirring-type water extracter is joined by belt and step-down gear 2; The discharge port 3 of freezing extruding stirring-type water extracter and the low side of a rotary conveyor 4 join, and rotary conveyor 4 is fixed on the top of a sump 23;
A refinery pit 5, the suitable for reading of high-end and refinery pit 5 of rotary conveyor 4 joined, in refinery pit 5, be provided with agitator 6 and well heater 7, be provided with circulation discharge port 8 in the bottom of refinery pit 5 and joined by the defeated transfer pump 10 of pipeline 9 and circulation, the outlet of circulation transfer pump 10 is joined by the opening for feed 13 of pipeline 9 with freezing extruding stirring-type water extracter;
Connect a qualified oil refining scum silica frost discharge port 11 at the middle part of refinery pit 5, joined by pipeline 9 and qualified oil refining scum silica frost transferpump 12, the oil refining operation pipeline 14 of the outlet of qualified oil refining scum silica frost transferpump 12 and refinery joins.
Freezing extruding stirring-type water extracter is made up of freezing chuck 15, dehydration tube 16, dehydration scraper plate 17, transmission shaft 18, refrigerator 19, refrigerating fulid recycle pump 20, refrigerator 19 and refrigerating fulid recycle pump 20 are fixed on the below of freezing chuck 15, freezing chuck 15 is located at the outside of dehydration tube 16, dehydration scraper plate 17 is fixed on the transmission shaft 18 by elastic scraper frame 21, the end of transmission shaft 18 is fixed with belt pulley 22, join by belt and step-down gear 2, dehydration scraper plate 17 is positioned among the dehydration tube 16, joins with the inwall of dehydration tube 16.
Be provided with opening for feed 13 and discharge port 3 at the two ends of dehydration tube 16, be provided with the outlet 25 of refrigerating fulid import 24 and refrigerating fulid at the two ends of freezing chuck 15 and be serially connected by pipeline and refrigerator 19 and refrigerating fulid recycle pump 20.
Embodiment: its processing and fabricating of process for treating scum of scum pool in oil refinery of the present invention is very simple and convenient, shown in the by specification accompanying drawing routinely chemical industry equipment processing technology thereof processing get final product.
Using method is as follows: will contain earlier and refine oil the wastewater collection of scum silica frost and place static the depositing in oil refining scum silica frost pond, water and mechanical impurity are separated in the effect lower leaf of gravity, isolated water and impurity emit at the bottom of the pond, squeeze in the oil refining scum silica frost storage tank oil refining scum silica frost on upper strata standby.Actuating motor drives scraper shaft and rotates, start refrigerator and in chuck, inject refrigerating fulid, with pump moisture oil refining scum silica frost is sent into the opening for feed of dehydration tube then from oil refining scum silica frost storage tank, moisture sump oil is depressed freezing limit, limit breakdown of emulsion at the stirring extruding of rotor segment after entering the dehydration tube of freezing stirring extruding pressing dehydrator, last water-oil mixture is discharged from the dehydration tube discharge port of freezing extruding stirring-type water extracter and is fallen on the rotary conveyor, profit separates on rotary conveyor, water and silt impurity are fallen the sump of its below from rotary conveyor, oil refining scum silica frost after the preliminary hydro-extraction is fallen the refinery pit from the upper end of rotary conveyor, oil refining scum silica frost after preliminary hydro-extraction heated and stirred in refinery pit is refining further to separate profit, and heating and temperature control is at 40-45 ℃.The proportion that water content is few is little on the top of refinery pit, and the ratio that water content is big is great in the bottom of refinery pit, after the oil refining standard that reaches on top by oil transportation pumping refinery oil refining, the bottom pass through the opening for feed that recycle pump returns freezing extruding stirring-type water extracter.
Temperature of charge generally is controlled at 1-6 ℃ in the dehydration tube of freezing extruding stirring-type water extracter.
Process for treating scum of scum pool in oil refinery of the present invention is compared with prior art, has that technological design is reasonable, device structure is simple, be easy to processing, the dewatering efficiency height, save characteristics such as the energy, minimizing environmental pollution, thereby, have good value for applications.
Claims (1)
1. process for treating scum of scum pool in oil refinery is characterized in that:
(1) will refine oil scum silica frost under the normal pressure and pump into a freezing extruding stirring-type water extracter and carry out freezing stirring processed, freezing temp is controlled at 1-6C °;
(2) the oil refining scum silica frost of discharging from the discharge port of freezing extruding stirring-type water extracter is fallen on the rotary conveyor, and profit is initial gross separation on rotary conveyor, divides dried up back oil refining scum silica frost to send into oil refining scum silica frost refinery pit from the upper end of rotary conveyor and carries out refinement treatment;
(3) the further processed of oil refining scum silica frost heated and stirred in refinery pit, the qualified oil refining scum silica frost after the dehydration is refined oil by pumping oil refining operation on the top of refinery pit;
(4) not conforming to of refinery pit bottom respectively refines oil scum silica frost and sends the freezing again stirring processed of freezing extruding stirring-type water extracter in the bottom of refinery pit back to by the circulation transfer pump;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98110574A CN1087001C (en) | 1998-11-19 | 1998-11-19 | Process for treating scum of scum pool in oil refinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98110574A CN1087001C (en) | 1998-11-19 | 1998-11-19 | Process for treating scum of scum pool in oil refinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1254746A CN1254746A (en) | 2000-05-31 |
| CN1087001C true CN1087001C (en) | 2002-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98110574A Expired - Fee Related CN1087001C (en) | 1998-11-19 | 1998-11-19 | Process for treating scum of scum pool in oil refinery |
Country Status (1)
| Country | Link |
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| CN (1) | CN1087001C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372327B (en) * | 2011-09-30 | 2013-03-27 | 于文 | Method and device for removing sewage scum |
| CN106267907B (en) * | 2015-06-13 | 2019-05-28 | 中国石油化工股份有限公司 | A kind of sump oil dross dehydration treatment process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1157265A (en) * | 1996-12-07 | 1997-08-20 | 姜启文 | Method and device for treating dross and greasy dirt |
| JPH09287709A (en) * | 1996-04-18 | 1997-11-04 | Mitsubishi Heavy Ind Ltd | Burner tip for burning of ultra-high tenacity residual oil |
-
1998
- 1998-11-19 CN CN98110574A patent/CN1087001C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09287709A (en) * | 1996-04-18 | 1997-11-04 | Mitsubishi Heavy Ind Ltd | Burner tip for burning of ultra-high tenacity residual oil |
| CN1157265A (en) * | 1996-12-07 | 1997-08-20 | 姜启文 | Method and device for treating dross and greasy dirt |
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| Publication number | Publication date |
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| CN1254746A (en) | 2000-05-31 |
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