CN202277708U - Multistage settling buffer tank and coke cooling water purification device for delayed coking - Google Patents
Multistage settling buffer tank and coke cooling water purification device for delayed coking Download PDFInfo
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- CN202277708U CN202277708U CN2011203931204U CN201120393120U CN202277708U CN 202277708 U CN202277708 U CN 202277708U CN 2011203931204 U CN2011203931204 U CN 2011203931204U CN 201120393120 U CN201120393120 U CN 201120393120U CN 202277708 U CN202277708 U CN 202277708U
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- cooling water
- surge tank
- coke cooling
- disengagement zone
- multistage sedimentation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model relates to a multistage settling buffer tank and a coke cooling water purification device for delayed coking. Heat exchange coils, a coke particle screen and settling separation areas are arranged in the multistage settling buffer tank. The problems of clogging of a coke cooling water system and the like are effectively avoided, the abrasion of equipment is reduced, and the afterheat of coke cooling water is recovered for lower energy consumption. The coke cooling water purification device provided by the utility model has the advantages of energy conversation, emission reduction, novelty, environment friendliness, safety, reliability and simple equipment.
Description
Technical field
The utility model relates to burnt water treatment facilities of a kind of oil plant System of Cool Coking of Delayed Coking and multistage sedimentation surge tank in the environmental technology field.
Background technology
Delayed coking is to be raw material with residual oil, at high temperature carries out a kind of hot procedure of degree of depth heat cracking reaction, and it is one of main means of light materialization of heavy oil, in world refining industry, occupies critical role.Parts such as delayed coking unit comprises delayed coking, it is stable to absorb, coke cooling water system, decoking water system and blowdown system.Delayed coking is important processing of heavy oil technology.But the requirement that how to reach delayed coking unit " environmental friendliness, energy-saving and emission-reduction, quality product " is a big bottleneck of being badly in need of solution.Delayed coking unit for the caloric requirement of taking away in the coke drum consumes a large amount of cooling waters, thereby produces cold burnt sewage in process of production.In order to reduce device coke cooling water consumption and cold burnt sewage discharge; The design philosophy that the coke cooling water system adopts coke cooling water to recycle; Be cold burnt overflow with defocused 85～95 ℃ cold burnt hot water of bubble after PROCESS FOR TREATMENT such as dedusting, oil removing, cooling, be recycled to the coke cooling water storage tank in order to cold burnt recycle once more.
CN2533134Y discloses a kind of coke-cooling waste water cyclic processing device, adopts the method for multistage degreaser cyclone series connection and the series connection of multistage air cooler, removes degreaser and reduces water temperature.But this method has increased system pressure drop and equipment investment, and floor space.Hot water elevator pump, oil expeller etc. exist serious plug to block up problem simultaneously, and the system that influences runs well.
CN1754829A discloses a kind of cool coking effluent treatment method and device; Part coke cooling water and the cold burnt sewage of heat are mixed into the hot water surge tank; When reducing sewage temperature, cleaned the part high-temperature oil gas of coke drum discharging, reduced oil vapour pollution from the source.Increase coke cooling water system water consumption and equipment investment but the part coke cooling water mixes with the cold burnt sewage of heat, wasted a large amount of heat energy.
Because there is above problem and shortage in prior art, press for development cost in this area low, effective, and the coke cooling water treating apparatus of energy-saving and emission-reduction.
Summary of the invention
To the deficiency of prior art, the utility model provides a kind of energy-saving and emission-reduction, novel environment friendly, safe and reliable, the simple coke cooling water purifier of equipment and multistage sedimentation surge tank.
This practical multistage sedimentation surge tank does; Multistage sedimentation surge tank is a tube structure; Barrel is divided into two parts by vertical decoking dividing plate, i.e. first order Disengagement zone and Disengagement zone, the second level, and vertically the both sides of decoking dividing plate and bottom and cylindrical shell are and are tightly connected; Vertically the height of decoking dividing plate is lower than the cylindrical shell height, forms overflow plate; The middle part of first order Disengagement zone cylindrical shell is provided with the coke cooling water inlet, and the cylindrical shell bottom of first order Disengagement zone is provided with sewage draining exit; Disengagement zone, the second level is provided with vertical oil removing dividing plate; Vertically the both sides and the cylindrical shell of oil removing dividing plate are tightly connected; Vertically form the oil removing Disengagement zone of upper end and lower ending opening between oil removing dividing plate and the cylindrical shell; The corresponding cylindrical shell in top, oil removing Disengagement zone is provided with the sump oil floss hole, and the corresponding cylindrical shell in bottom, oil removing Disengagement zone is provided with the coke cooling water outlet, and cylindrical shell bottom, Disengagement zone, the second level is provided with Sewage outlet.Vertically oil removing dividing plate upper end is lower than the height of vertical decoking dividing plate, and end distance cylindrical shell bottom is 20%～70% of tube end height apart from degree under the vertical oil removing dividing plate.
In the utility model device, first order Disengagement zone and Disengagement zone, the second level in the multistage sedimentation surge tank are two-stage decoking Disengagement zone, and second Disengagement zone has except that functional oil simultaneously.The volume ratio of first order Disengagement zone and Disengagement zone, the second level is 1:2～1:3.The bottom of first order Disengagement zone and Disengagement zone, the second level all is provided with burnt grain sedimentation sliding plate, and drift angle is 30 °～60 °.The first order is provided with heat exchange coil in the Disengagement zone, and middle and upper part, first order Disengagement zone is provided with burnt grain filter, realizes that mainly low-temperature heat reclaims and big burnt grain filters.Be provided with in the Disengagement zone, the second level and remove oil separating device, realize that oil slick separates with coke cooling water.
In the utility model device, downward-sloping 30 °～60 ° angles and the cylindrical shell welding that enters the mouth of the coke cooling water of multistage sedimentation surge tank.On the coke cooling water Way in, extend 20～30cm baffle plate.
In the utility model device, it is above and apart from inlet 500～1500mm place that heat exchange coil is arranged on the coke cooling water inlet in the multistage sedimentation surge tank, heat exchange coil can be provided with two-layer or two-layer more than, the heat exchange coil material can adopt stainless steel.After the heat exchange of hot coke cooling water process heat exchange coil, temperature can be reduced to 40 ℃～50 ℃.Coke cooling water has not only reclaimed a large amount of low-temperature heat energies through heat exchange, has reduced the discharging of a large amount of foul gas in the coke cooling water system simultaneously.
In the utility model device, burnt grain filter is fixed on the superiors' heat exchange coil in the multistage sedimentation surge tank, and filter can adopt steel wire etc.Burnt grain filter can filter the above burnt grain of 1mm, avoids the influence of the burnt grain of larger particles to downstream coke cooling water treatment facility.
The utility model delayed coking coke cooling water purifier comprises that successively by hot water surge tank, hot water elevator pump, oil expeller, heat exchanger and the coke cooling water storage tank of pipeline connection, wherein the hot water surge tank is the above-mentioned multistage sedimentation surge tank of the utility model.
In the utility model device, when adopting a plurality of hot water surge tank, can adopt serial or parallel connection to connect between a plurality of surge tanks.
In the utility model device, the cold burnt sewage of overflow that from coke drum, comes is mixed into multistage sedimentation surge tank with the burnt sewage of bubble.Multistage sedimentation surge tank outlet is connected to hot water elevator pump inlet by pipeline, and coke cooling water is promoted to the oil expeller inlet through elevator pump, and the oil removing coke cooling water enters the coke cooling water storage tank.The coke cooling water entrance of water-supplying pump is connected to coke cooling water storage tank outlet, and pump discharge is connected to coke drum coke cooling water interface.
In the utility model device, be provided with multistage settlement separator in the hot water surge tank, compact conformation, simple to operate.After filtration of coke cooling water process and the sedimentation separation, the separating effect of focusing grain is more than 95%, and the oil slick clearance reaches 75%.
In the utility model device, oil expeller is removed tiny oil droplet in the coke cooling water, coke cooling water after treatment oil content less than 10mg/L.Oil expeller can adopt spiral-flow type oil water separator and eddy flow-jet-forms such as coarse oil water separator.
In the utility model device, other technology contents is a content well known to those skilled in the art like sedimentation method and coke cooling water storage tank etc.
The utility model device can reach following technique effect:
(1) in the cold burnt system multistage sedimentation surge tank is set, has obviously improved the effect of settling of burnt grain.The cold burnt sewage of heat becomes clear through water quality after the sedimentation separation, and burnt grain content reduces.Can avoid the generation of burnt stifled phenomenon, prolong the service cycle of coke cooling water system.
(2) in the multistage sedimentation surge tank heat exchange coil is set, the low-temperature heat energy of recyclable hot coke cooling water is reduced to 40 ℃～50 ℃ with the coke cooling water temperature, helps reducing the release of foul gas, reduces the oil slick vaporizing oil-gas.
(3) multistage sedimentation surge tank compact conformation contract has decoking simultaneously and removes functional oil, takes up an area of few.
(4) the utility model is a kind of energy-saving and emission-reduction, novel environment friendly, safe and reliable, the simple coke cooling water purifier of equipment.
Description of drawings
Fig. 1 is that the utility model coke cooling water treating apparatus constitutes sketch map;
Fig. 2 is a multistage sedimentation surge tank structural representation in the utility model;
Fig. 3 is the vertical view of multistage sedimentation surge tank in the utility model.
Wherein: 1-coke drum, the multistage sedimentation surge tank of 2-, 3-coke cooling water elevator pump, 4-oil expeller; 5-coke cooling water storage tank, 6-coke cooling water feed pump, 7-surge tank coke cooling water inlet, 8-heat exchange coil; 9-first order Disengagement zone sedimentation Sewage outlet, 10-first order sedimentation separation district, sedimentation separation district, the 11-second level, 12-oil removing Disengagement zone; 13-sump oil floss hole, the outlet of 14-coke cooling water, Disengagement zone, 15-second level Sewage outlet.
The specific embodiment
The utility model device method for using is following: the cold burnt sewage of 80 ℃～95 ℃ overflow is mixed into multistage sedimentation surge tank with the burnt sewage of bubble, realizes that in surge tank burnt grain, coke cooling water separate with sump oil.Cold burnt sewage after the decoking oil removing promotes through elevator pump, after the further oil removing of oil expeller, gets into the cold water storage tank again in order to recycling, and coke cooling water is risen to by feed pump and reduces the coke drum temperature in the coke drum in the cold water storage tank.
As shown in Figure 1, the hot cold burnt sewage in the utility model coke cooling water purification method in the coke drum 1 gets into multistage sedimentation surge tank 2, most of burnt grain of sedimentation separation and elaioleucite in multistage sedimentation surge tank 2, and the settling efficiency of burnt grain reaches 95%, and the oil slick clearance reaches 75%.Pretreated coke cooling water is promoted to oil removing in the oil expeller 4 by elevator pump 3, purifies coke cooling water and enters coke cooling water storage tank 5 in order to cold burnt use once more, reduces sewage discharge.
Like Fig. 2, multistage sedimentation surge tank 2 is provided with two-stage heat exchange coil and the separation of multistage sewage in the utility model device, has reduced the equipment occupation of land, has improved separating effect.Multistage sedimentation surge tank coke cooling water inlet 7 gets in the multistage sedimentation surge tank 2, and coke cooling water is discharged multistage sedimentation surge tank by Sewage outlet 15 after filter decoking, heat exchange coil cooling, multi-stage separation.
Further specify the implementation process and the effect of the utility model coke cooling water purifier below through embodiment.
Embodiment
In the present embodiment, 80～95 ℃ hot cold burnt sewage is stored in the coke cooling water storage tank through the oil removing of sedimentation decoking, heat exchange after cooling off.The hot water surge tank is provided with the cooling of two-stage heat exchange coil, one-level filter decoking, two-stage sedimentation separation.The decoking rate reaches 96%, and purifying the coke cooling water oil concentration is 9mg/L, and the coke cooling water temperature is reduced to 45 ℃.It is better that the utility model purifies the coke cooling water effect, greatly reduces the foul gas discharging.
Claims (10)
1. multistage sedimentation surge tank; Multistage sedimentation surge tank is a tube structure; It is characterized in that: barrel is divided into two parts by vertical decoking dividing plate, i.e. first order Disengagement zone and Disengagement zone, the second level, and vertically the both sides of decoking dividing plate and bottom and cylindrical shell are and are tightly connected; Vertically the height of decoking dividing plate is lower than the cylindrical shell height, forms overflow plate; The middle part of first order Disengagement zone cylindrical shell is provided with the coke cooling water inlet, and the cylindrical shell bottom of first order Disengagement zone is provided with sewage draining exit; Disengagement zone, the second level is provided with vertical oil removing dividing plate; Vertically the both sides and the cylindrical shell of oil removing dividing plate are tightly connected; Vertically form the oil removing Disengagement zone of upper end and lower ending opening between oil removing dividing plate and the cylindrical shell; The corresponding cylindrical shell in top, oil removing Disengagement zone is provided with the sump oil floss hole, and the corresponding cylindrical shell in bottom, oil removing Disengagement zone is provided with the coke cooling water outlet, and cylindrical shell bottom, Disengagement zone, the second level is provided with Sewage outlet.
2. according to the described multistage sedimentation surge tank of claim 1, it is characterized in that: vertically oil removing dividing plate upper end is lower than the height of vertical decoking dividing plate, and end distance cylindrical shell bottom is 20%～70% of tube end height apart from degree under the vertical oil removing dividing plate.
3. according to the described multistage sedimentation surge tank of claim 1; It is characterized in that: the first order Disengagement zone in the multistage sedimentation surge tank and the volume ratio of Disengagement zone, the second level are 1:2～1:3; The bottom of first order Disengagement zone and Disengagement zone, the second level all is provided with burnt grain sedimentation sliding plate, and drift angle is 30 °～60 °.
4. according to the described multistage sedimentation surge tank of claim 1, it is characterized in that: the first order is provided with heat exchange coil in the Disengagement zone.
5. according to claim 1 or 4 described multistage sedimentation surge tanks, it is characterized in that: the top in the first order Disengagement zone is provided with burnt grain filter.
6. according to the described multistage sedimentation surge tank of claim 1, it is characterized in that: downward-sloping 30 °～60 ° angles and the cylindrical shell welding that enters the mouth of the coke cooling water of multistage sedimentation surge tank.
7. according to claim 1 or 6 described multistage sedimentation surge tanks, it is characterized in that: on the coke cooling water Way in, extend 20～30cm baffle plate.
8. according to the described multistage sedimentation surge tank of claim 1, it is characterized in that: it is above and apart from inlet 500～1500mm place that heat exchange coil is arranged on the coke cooling water inlet in the multistage sedimentation surge tank, heat exchange coil be provided with two-layer or two-layer more than.
9. according to the described multistage sedimentation surge tank of claim 1, it is characterized in that: burnt grain filter is fixed on the superiors' heat exchange coil in the multistage sedimentation surge tank, and filter adopts steel wire.
10. delayed coking coke cooling water purifier; Comprise successively hot water surge tank, hot water elevator pump, oil expeller, heat exchanger and coke cooling water storage tank by pipeline connection; It is characterized in that: described hot water surge tank is the described multistage sedimentation surge tank of the arbitrary claim of claim 1 to 9; Multistage sedimentation surge tank outlet is connected to hot water elevator pump inlet by pipeline, and coke cooling water is promoted to the oil expeller inlet through elevator pump, and the oil removing coke cooling water enters the coke cooling water storage tank; The coke cooling water entrance of water-supplying pump is connected to coke cooling water storage tank outlet, and pump discharge is connected to coke drum coke cooling water interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203931204U CN202277708U (en) | 2011-10-17 | 2011-10-17 | Multistage settling buffer tank and coke cooling water purification device for delayed coking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203931204U CN202277708U (en) | 2011-10-17 | 2011-10-17 | Multistage settling buffer tank and coke cooling water purification device for delayed coking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202277708U true CN202277708U (en) | 2012-06-20 |
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ID=46223895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203931204U Expired - Lifetime CN202277708U (en) | 2011-10-17 | 2011-10-17 | Multistage settling buffer tank and coke cooling water purification device for delayed coking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202277708U (en) |
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2011
- 2011-10-17 CN CN2011203931204U patent/CN202277708U/en not_active Expired - Lifetime
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120620 |