CN202279708U - Multi-stage sedimentation separator and delayed coking coke cooling water purification device - Google Patents
Multi-stage sedimentation separator and delayed coking coke cooling water purification device Download PDFInfo
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- CN202279708U CN202279708U CN2011203931755U CN201120393175U CN202279708U CN 202279708 U CN202279708 U CN 202279708U CN 2011203931755 U CN2011203931755 U CN 2011203931755U CN 201120393175 U CN201120393175 U CN 201120393175U CN 202279708 U CN202279708 U CN 202279708U
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- coke cooling
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Abstract
The utility model relates to a multi-stage sedimentation separator and a delayed coking coke cooling water purification device. The multi-stage sedimentation separator has a cylindrical structure; a cylinder is partitioned into three parts, namely a primary separation region, a secondary separation region and an oil removal separation region, by vertical coke removal partition plate, oil removal partition plate and coke cooling water baffle plate; the middle part of the cylinder at the primary separation region is provided with a coke cooling water inlet; the lower part of the cylinder at the primary separation region is provided with a drain outlet; the vertical oil removal partition plate is arranged between the secondary separation region and the oil removal separation region; the two sides of the vertical oil removal partition plate are hermetically connected with the cylinder; the corresponding cylinder on the upper part of the oil removal separation region is provided with a dirty oil discharge port; and the bottom of the cylinder is provided with a drain outlet. By using a multi-stage sedimentation coke removal and oil-water separation combined technology, the problems of blockage of a coke cooling water system, slow-down of wear of equipment and the like can be effectively avoided. The device is the coke cooling water purification device which has the advantages of energy conservation, emission reduction, novelty, environmental friendliness, safety, reliability and simple equipment.
Description
Technical field
The utility model relates to the burnt water-purification plant of a kind of refinery System of Cool Coking of Delayed Coking in the environmental technology field, specifically a kind of waste disposal plant of the cold burnt sewage that produces in process of production of refinery's delayed coking unit.
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 heavy oil upgrading Technology.But the requirement that how to reach delayed coking unit " environmental friendliness, energy-saving and emission-reduction, quality products " 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 water coolants, 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 art breading 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 multistage degreaser cyclone series connection and the placed in-line method of multistage air cooler, removes detergent oil and reduces water temperature.But this method has increased system pressure drop and facility investment, and floor space.Hot water lift pump, oil eliminator 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 facility 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 cost of development in this area low, effective, and the coke cooling water treatment unit 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 refining plant of equipment and multistage settlement separator.
The multistage settlement separator of the utility model is a tube structure, and barrel is become three parts by vertical decoking dividing plate, oil removing dividing plate and coke cooling water barrier partitions, i.e. primary separation district, secondary disengaging zone and oil removing disengaging zone; Vertically the both sides of decoking dividing plate and bottom and cylindrical shell are and are tightly connected, and vertically the height of decoking dividing plate is lower than the cylindrical shell height to form overflow; The middle part of primary separation district cylindrical shell is provided with the coke cooling water inlet, and the cylindrical shell bottom in primary separation district is provided with sewage draining exit; Vertical oil removing dividing plate is set between secondary disengaging zone and oil removing disengaging zone; Vertically the both sides and the cylindrical shell of oil removing dividing plate are tightly connected, and vertically form the oil removing disengaging zone that upper end and lower end are opened wide between oil removing dividing plate and the cylindrical shell, and the corresponding cylindrical shell in top, oil removing disengaging zone is provided with the sump oil drain; The secondary disengaging zone comprises at least two overflow type settling vessels that are provided with from top to bottom; Overflow type settling vessel top is open design, and the bottom is a pyramidal structure, and the top of bottom pyramidal structure is provided with sewage draining exit; Upper level overflow type settling vessel riser is positioned at next stage overflow type settling vessel top; Last step overflow type settling vessel bottom cylindrical shell is provided with the coke cooling water outlet, and the cylindrical shell bottom is provided with sewage draining exit, and the coke cooling water outlet is higher than the sewage draining exit of cylindrical shell bottom.
In the utility model device, vertically the height of oil removing dividing plate is lower than the decoking dividing plate to form the oil slick overflow.
In the utility model device, the overflow type settling vessel can be provided with 2～5 grades, forms sedimentation-overflow-settling process from top to bottom successively.
In the utility model device, vertically the decoking dividing plate is divided into two portions that volume ratio is 1:2～1:3 with multistage settlement separator cylindrical shell.The relative position of the sewage draining exit bottom cylindrical shell is provided with burnt grain sedimentation sliding plate, and slip angle is 30 °～60 °.
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 settlement separator.On the coke cooling water Way in, extend 20～30cm baffle plate.
The utility model delayed coking coke cooling water refining plant comprises that successively by the hot water surge tank of pipeline connection, multistage settlement separator, hot water lift pump, oil eliminator, interchanger and coke cooling water storage tank, wherein multistage settlement separator is the above-mentioned multistage settlement separator of the utility model.
In the utility model device, when adopting multistage settlement separator, can adopt serial or parallel connection to connect between a plurality of settlement separators.
The utility model device in use, the cold burnt sewage of overflow that from coke drum, comes is mixed into the hot water surge tank with the burnt sewage of bubble.The surge tank outlet is by pipe connection to the cold burnt sewage inlet of efficient multistage settlement separator, and the cold burnt sewage outlet of separator links to each other with hot water lift pump inlet, and coke cooling water is promoted to the oil eliminator inlet through lift pump, and the oil removing coke cooling water enters the coke cooling water storage tank through after the heat exchange.The coke cooling water entrance of water-supplying pump is connected to coke cooling water storage tank relief outlet, and pump discharge is connected to coke drum coke cooling water interface.
In the utility model device, multistage settlement separator compact construction, simple to operate.Coke cooling water is through after settlement separate, and the separating effect of focusing grain is more than 95%, and the oil slick clearance reaches 75%.
Oil eliminator is removed tiny oil droplet in the coke cooling water in the utility model method, coke cooling water after treatment oleaginousness less than 10mg/L.Oil eliminator can adopt whirlwind-type water-and-oil separator and eddy flow-jet-forms such as coarse water-and-oil separator.
In the utility model method, other technology contents is a content well known to those skilled in the art like surge tank, sedimentation method and coke cooling water storage tank etc.
The utility model coke cooling water purifying processing device can reach following technique effect:
(1) connects efficient multistage settlement separator in the cold burnt system behind the hot water surge tank, be combined into multistage sedimentation treatment unit, obviously improved the effect of settling of burnt grain.The cold burnt sewage of heat becomes clear through settlement separate back water quality, and burnt grain content reduces.Coke cooling water can be avoided the generation of burnt stifled phenomenon after sedimentation is handled, prolong the running period of coke cooling water system.
(2) efficient multistage settlement separator compact construction has decoking simultaneously and removes functional oil, takes up an area of and reduces.
(3) the utility model is a kind of energy-saving and emission-reduction, novel environment friendly, safe and reliable, the simple coke cooling water purifying method of equipment and device.
Description of drawings
Fig. 1 is a kind of detailed process schematic flow sheet that the utility model coke cooling water purifies;
Fig. 2 is an efficient multistage settlement separator structural representation in the utility model;
Fig. 3 is the vertical view of efficient multistage settlement separator in the utility model.
Wherein: 1-coke drum, 2-hot water surge tank, the efficient multistage settlement separator of 3-, 4-hot water lift pump, 5-oil eliminator; The 6-interchanger, 7-coke cooling water storage tank, 8-coke cooling water service pump, 9-surge tank Sewage outlet; 10-primary separation district, 11-one-level overflow settling vessel, 12-oil removing disengaging zone, 13-secondary overflow settling vessel; Three grades of overflow settling vessels of 14-, 15-separator coke cooling water inlet, 16-oil discharge outlet, the outlet of 17-coke cooling water; 18-primary separation district Sewage outlet, three grades of overflow settling vessels of 19-Sewage outlet, 20-secondary overflow settling vessel Sewage outlet, 21-one-level overflow settling vessel Sewage outlet.
Embodiment
The utility model device method of use is following: the cold burnt sewage of 80 ℃～95 ℃ overflow is mixed into the hot water surge tank with the burnt sewage of bubble; Burnt grain sedimentation in surge tank of greater particle size; From flowing into multistage settlement separator, realize that burnt grain, coke cooling water separate with sump oil through preliminary settled hot coke cooling water.The cold burnt sewage of decoking oil removing heat promotes through lift pump, and devices such as the oil eliminator of flowing through successively, interchanger back gets into the cold water storage tank in order to recycling, and coke cooling water is risen to by service 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 refining plant in the coke drum 1 gets into hot water surge tank 2, the big burnt grain of sedimentation.Pretreated coke cooling water is got in the multistage settlement separator 3 by multistage settlement separator 3 coke cooling waters inlet 15, and coke cooling water is removed burnt grain and sump oil in separator 3, and the settling efficiency of burnt grain reaches 95%.Remove defocused coke cooling water through sedimentation and be promoted to oil removing in the oil eliminator 5, then through interchanger 6 coolings and recovery heat energy by lift pump 4.At last, purify coke cooling water and enter coke cooling water storage tank 7, reduce sewage discharge in order to cold burnt use once more.
Like Fig. 2, multistage settlement separator 3 is provided with the oil removing of level Four decoking one-level in the utility model method, has reduced the equipment occupation of land, has improved separating effect.Coke cooling water is got in the primary separation district 10 by separator coke cooling water inlet 15, and coke cooling water flows into one-level overflow settling vessel 11 through slow overflow again, separating oil and water in one-level overflow settling vessel, and separated oil phase gets into oil removing disengaging zone 12, is got rid of by oil discharge outlet 16.Separated water is successively from flowing into secondary overflow settling vessel 13 and three grades of overflow settling vessels 14.Separatedly spissatedly contain burnt sewage and efflux by Sewage outlet respectively.Coke cooling water by after multistage settlement separator 3 purifications is flowed out by coke cooling water outlet 17.
Further specify the implementation process and the effect of the utility model coke cooling water purifying method 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.Efficient multistage settlement separator adopts level Four decoking one-level oil removing built-up type separator, and interchanger adopts efficient thermocouple heat exchange element.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 obvious that the utility model purifies the coke cooling water effect.
Claims (10)
1. multistage settlement separator, it is characterized in that: multistage settlement separator is a tube structure, barrel is become three parts by vertical decoking dividing plate, oil removing dividing plate and coke cooling water barrier partitions, i.e. primary separation district, secondary disengaging zone and oil removing disengaging zone; Vertically the both sides of decoking dividing plate and bottom and cylindrical shell are and are tightly connected, and vertically the height of decoking dividing plate is lower than the cylindrical shell height to form overflow; The middle part of primary separation district cylindrical shell is provided with the coke cooling water inlet, and the cylindrical shell bottom in primary separation district is provided with sewage draining exit; Vertical oil removing dividing plate is set between secondary disengaging zone and oil removing disengaging zone; Vertically the both sides and the cylindrical shell of oil removing dividing plate are tightly connected, and vertically form the oil removing disengaging zone that upper end and lower end are opened wide between oil removing dividing plate and the cylindrical shell, and the corresponding cylindrical shell in top, oil removing disengaging zone is provided with the sump oil drain; The secondary disengaging zone comprises at least two overflow type settling vessels that are provided with from top to bottom; Overflow type settling vessel top is open design, and the bottom is a pyramidal structure, and the top of bottom pyramidal structure is provided with sewage draining exit; Upper level overflow type settling vessel riser is positioned at next stage overflow type settling vessel top; Last step overflow type settling vessel bottom cylindrical shell is provided with the coke cooling water outlet, and the cylindrical shell bottom is provided with sewage draining exit, and the coke cooling water outlet is higher than the sewage draining exit of cylindrical shell bottom.
2. according to the described multistage settlement separator of claim 1, it is characterized in that: vertically the height of oil removing dividing plate is lower than the decoking dividing plate to form the oil slick overflow.
3. according to the described multistage settlement separator of claim 1, it is characterized in that: the overflow type settling vessel is provided with 2～5 grades, forms sedimentation-overflow-settling process from top to bottom successively.
4. according to the described multistage settlement separator of claim 1, it is characterized in that: vertically the decoking dividing plate is divided into two portions that volume ratio is 1:2～1:3 with multistage settlement separator cylindrical shell.
5. according to the described multistage settlement separator of claim 1, it is characterized in that: the relative position of the sewage draining exit bottom cylindrical shell is provided with burnt grain sedimentation sliding plate, and slip angle is 30 °～60 °.
6. according to the described multistage settlement separator 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 settlement separator.
7. according to the described multistage settlement separator of claim 6, it is characterized in that: on the coke cooling water Way in, extend 20～30cm baffle plate.
8. delayed coking coke cooling water refining plant; Comprise that successively by the hot water surge tank of pipeline connection, multistage settlement separator, hot water lift pump, oil eliminator, interchanger and coke cooling water storage tank, it is characterized in that: described multistage settlement separator is the described multistage settlement separator of the arbitrary claim of claim 1 to 7.
9. according to the described device of claim 8, it is characterized in that: adopt a plurality of settlement separators, adopt serial or parallel connection to connect between a plurality of settlement separators.
10. according to the described device of claim 8; It is characterized in that: the surge tank outlet is by pipe connection to the cold burnt sewage inlet of efficient multistage settlement separator; The cold burnt sewage outlet of separator links to each other with hot water lift pump inlet; Coke cooling water is promoted to the oil eliminator inlet through lift pump, and the oil removing coke cooling water enters the coke cooling water storage tank through after the heat exchange; The coke cooling water entrance of water-supplying pump is connected to coke cooling water storage tank relief outlet, and pump discharge is connected to coke drum coke cooling water interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203931755U CN202279708U (en) | 2011-10-17 | 2011-10-17 | Multi-stage sedimentation separator and delayed coking coke cooling water purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203931755U CN202279708U (en) | 2011-10-17 | 2011-10-17 | Multi-stage sedimentation separator and delayed coking coke cooling water purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202279708U true CN202279708U (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203931755U Expired - Lifetime CN202279708U (en) | 2011-10-17 | 2011-10-17 | Multi-stage sedimentation separator and delayed coking coke cooling water purification device |
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| Country | Link |
|---|---|
| CN (1) | CN202279708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905297A (en) * | 2018-09-25 | 2018-11-30 | 江西中医药大学 | Oil water separator and its component |
-
2011
- 2011-10-17 CN CN2011203931755U patent/CN202279708U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905297A (en) * | 2018-09-25 | 2018-11-30 | 江西中医药大学 | Oil water separator and its component |
| CN108905297B (en) * | 2018-09-25 | 2023-08-25 | 江西中医药大学 | Oil-water separator and assembly thereof |
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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 |