CN210457761U - Deep oil removing device for coking sulfur-containing sewage - Google Patents
Deep oil removing device for coking sulfur-containing sewage Download PDFInfo
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- CN210457761U CN210457761U CN201921458720.7U CN201921458720U CN210457761U CN 210457761 U CN210457761 U CN 210457761U CN 201921458720 U CN201921458720 U CN 201921458720U CN 210457761 U CN210457761 U CN 210457761U
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Abstract
The utility model provides a coking contains sulphur sewage degree of depth deoiling device, the device is including containing sulphur sewage charge pump, medicament charge pump, multitube cyclone and membrane filter, multitube cyclone includes inlet pipe, a plurality of cyclone and outlet pipe, the inlet pipe with cyclone's lateral wall is linked together, the outlet pipe with cyclone's lower part is linked together, contain sulphur sewage charge pump the discharge gate with the discharge gate of medicament charge pump respectively with multitube cyclone's inlet pipe is linked together, cyclone's outlet pipe with membrane filter's water inlet is linked together. The device can degree of depth desorption contain fine coke and oil in the sulphur sewage, satisfies acid water stripping feeding requirement, combines multitube cyclone, under the effect of chemical agent, has got rid of most oil slick, suspended solid and fine coke, has reduced membrane filter's burden, reduces membrane filter's cost.
Description
Technical Field
The utility model relates to an oily sewage treatment technical field especially relates to a coking contains oily sewage degree of depth deoiling device.
Background
The coking sulfur-containing sewage contains a large amount of organic pollutants such as coke powder, oil, sulfide, ammonia nitrogen, phenol and the like, and is high-concentration and high-emulsification organic wastewater which is difficult to treat by a steam stripping method. The concentration of pollutants in the coking sulfur-containing sewage far exceeds the water inlet standard of a stripping device, particularly coke powder and oil. If the wastewater directly enters a stripping device, the wastewater contains oil, the gas-liquid mass transfer resistance in the stripping tower is increased, so that hydrogen sulfide and ammonia are difficult to strip from the wastewater to a gas phase, and finally, the sulfur content and ammonia nitrogen in the purified water cannot meet the process requirements, and the stripping operation is influenced; the sewage is provided with coke powder, tower trays are easy to block, the mass transfer efficiency of the tower is reduced, a reboiler at the bottom of the stripping tower is easy to block, the heat transfer resistance of the reboiler is increased, the energy consumption is increased, even the stable operation of the device is influenced, and finally the device is stopped and overhauled.
Therefore, before the coking sulfur-containing sewage enters the stripping device, the coking sulfur-containing sewage must be subjected to strict oil removal and coke powder removal treatment. The prior methods for treating sulfur-containing sewage of delayed coking mainly comprise a filtration method, a gravity sedimentation method, a chemical demulsification cyclone separation method, a floating ceramic membrane separation method and the like. Wherein, the filtering method is difficult to filter the coke powder and oil with the particle size less than 25 μm, the total water quality is still poor, and the requirements of steam stripping and feeding can not be met; the gravity sedimentation method has the advantages that because the sedimentation speed of oil and solid particles in a free sedimentation test is relatively low, if the high treatment efficiency is achieved, the long retention time and the correspondingly large oil separation sedimentation tank are needed, and the occupied area and the investment are large; the chemical demulsification sedimentation method has large using amount of chemical agents, high operation cost of sulfur-containing sewage treatment and low economy; the chemical demulsification cyclone separation method can reduce the usage amount of chemical agents, but the separation of coke powder with the density close to 1.0g/cm3 and water is difficult, a part of coke powder is formed and circularly enriched in a system, and a part of coke powder enters a downstream stripping device along with a water phase; the air-floatation ceramic membrane separation method volatilizes sulfur-containing gas in sulfur-containing sewage in the air floatation process, mixes the sulfur-containing gas with air-floatation air to generate a large amount of malodorous gas, causes secondary pollution, simultaneously filters all coke powder and oil by virtue of a ceramic membrane, causes the number of ceramic membrane filter elements and the sewage circulation volume to be large, and has high investment on the ceramic membrane.
SUMMERY OF THE UTILITY MODEL
Problem to among the prior art, the utility model aims to provide a coking contains the sewage degree of depth deoiling device of sulphur, structural design is reasonable, and the treatment effect is good, safety ring protects.
The embodiment of the utility model provides a coking contains sulphur sewage degree of depth deoiling device, the device is including containing sulphur sewage charge pump, medicament charge pump, multitube cyclone and membrane filter, multitube cyclone includes inlet pipe, a plurality of cyclone and outlet pipe, the inlet pipe with cyclone's lateral wall is linked together, the outlet pipe with cyclone's lower part is linked together, contain sulphur sewage charge pump the discharge gate with the discharge gate of medicament charge pump respectively with multitube cyclone's inlet pipe is linked together, multitube cyclone's outlet pipe with membrane filter's water inlet is linked together.
Optionally, the device further comprises a cartridge filter, and the water outlet pipe of the multi-pipe cyclone separator is communicated with the water inlet of the membrane filter through the cartridge filter.
Optionally, the cartridge filter comprises a first security filter and a second security filter which are automatically switched according to the filtering pressure difference, the water outlet pipe of the multi-pipe cyclone separator is respectively communicated with the water inlet of the first security filter and the water inlet of the second security filter, and the water outlet of the first security filter and the water outlet of the second security filter are respectively communicated with the water inlet of the membrane filter.
Optionally, the device further comprises a sewage circulating pump, a water inlet of the sewage circulating pump is respectively communicated with a water outlet of the cartridge filter and a water outlet of the membrane filter, and a water outlet of the sewage circulating pump is communicated with a water inlet of the membrane filter.
Optionally, the water outlet of the membrane filter is also in communication with the feed pipe of the multi-tube cyclone.
Optionally, the membrane filter is a ceramic membrane filter.
Optionally, the inlet pipe includes feeding house steward and a plurality of feeding branch road pipe, feeding house steward encircles the cyclone separation pipe sets up, feeding branch road pipe includes feeding section and linkage segment, the feeding section with the cyclone separation pipe is linked together, the linkage segment communicate in the feeding section with between the feeding house steward.
Optionally, the feeding section of the feeding branch pipe and the axial direction of the cyclone separation pipe form an included angle of 25-35 degrees.
Optionally, each cyclone separation tube corresponds to two feeding branch tubes, and the two feeding branch tubes are symmetrically arranged on the side surfaces of the cyclone separation tubes.
Optionally, a feeding branch cut-off valve is arranged on the connecting section of each feeding branch pipe.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the scope of the invention, as claimed.
The utility model provides a coking contains sulphur sewage degree of depth deoiling device has following advantage:
the utility model provides a through the combination processing technology of chemical agent + weak whirl + membrane filtration, can the degree of depth desorption contain the fine coke and the oil in the sulphur sewage, satisfy the requirement of acid water stripping feeding, combine multitube cyclone, under the effect of chemical agent, got rid of most superficial oil, suspended solid and fine coke, reduced the burden of membrane filter, reduced the cost of membrane filter to reduce the cost of whole sewage degree of depth deoiling device; furthermore, a security filter can be added to realize the respective discharge of the floating oil and the oil sludge without arranging an oil sludge separation facility, thereby reducing the subsequent treatment requirement; the device adopts a closed system, and can not generate toxic, harmful and malodorous volatile gas in the physical process of sulfur-containing sewage, thereby ensuring the safety of field operation.
Drawings
Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an apparatus for deep oil removal of coking wastewater containing sulfur according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a multi-tube cyclone separator according to an embodiment of the present invention.
Reference numerals:
1 feeding pipe of sulfur-containing sewage feeding pump 31
2 medicament feed Pump 311 feed header
3 the cyclone 312 feed branch pipe
4-A first safety filter 313 feeding branch cut-off valve
4-B second cartridge filter 32 cyclone separation tube
5 sewage circulating pump 33 outlet pipe
6 ceramic membrane filter
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.
As shown in fig. 1 and fig. 2, in order to solve the above technical problem, an embodiment of the present invention provides a deep oil removing device for coking wastewater containing sulfur, the device includes a wastewater containing sulfur feeding pump 1, a chemical feeding pump 2, a multi-tube cyclone separator 3 and a membrane filter 6, the multi-tube cyclone separator 3 includes a feeding pipe 31, a plurality of cyclone separation tubes 32 and a water outlet pipe 33, the feeding pipe 31 is communicated with a side wall of the cyclone separation tube 32, the water outlet pipe 33 is communicated with a lower portion of the cyclone separation tube 32, a discharge port of the wastewater containing sulfur feeding pump 1 is communicated with a discharge port of the chemical feeding pump 2 is respectively communicated with the feeding pipe 31 of the multi-tube cyclone separator 3, and the water outlet pipe 33 of the multi-tube cyclone separator 3 is communicated with a water inlet of the membrane filter 6.
When the deep oil removal device for the coking sulfur-containing sewage is applied, the sulfur-containing sewage enters the sulfur-containing sewage feed pump 1 through the path S1 to be pressurized, then is mixed with a medicament entering the path S2 and pressurized by the medicament feed pump 2, and then enters the multi-pipe cyclone separator 3, and the mixed liquid is subjected to centrifugal cyclone in the multi-pipe cyclone separator 3. The agent can adopt demulsifier and flocculant, under the action of the multi-pipe cyclone separator 3 and demulsifier and flocculant, the oil-water separation in the sulfur-containing sewage is accelerated, wherein floating oil rises to be accumulated and discharged at the top of the multi-pipe cyclone separator 3 through a path S4, and the sewage is settled at the bottom of the multi-pipe cyclone separator 3 and discharged to the water outlet pipe 33. The demulsifier in the agent may comprise a single demulsifier or a complex demulsifier, the flocculant may comprise a single flocculant or a complex flocculant, and the amount of the demulsifier added is automatically controlled by the agent feed pump 2.
Therefore, the utility model provides a through chemical agent + weak whirl + membrane filtration's combination processing technology, can degree of depth desorption contain the fine coke and the oil in the sulphur sewage, satisfy the requirement of acid water stripping feeding, combine multitube cyclone, under chemical agent's effect, desorption most oil slick, suspended solid and fine coke, reduced membrane filter's burden, reduce membrane filter's cost to reduce whole sewage degree of depth deoiling device's cost.
Further, as shown in fig. 1, the device further comprises a cartridge filter. The cartridge filter can adopt a high-flux metal filter element with the diameter of 20-50 mu m, but the utility model is not limited to the cartridge filter, and the cartridge filter is mainly used for removing suspended matters and large-particle coke powder in sulfur-containing sewage, thereby further reducing the processing burden of the subsequent membrane filter 6. The sewage in the multi-tube cyclone separator 3 is discharged from the water outlet pipe 33, enters the cartridge filter, is further filtered by the cartridge filter and enters the water inlet of the membrane filter 6. In this embodiment, the cartridge filters include a first security filter 4-a and a second security filter 4-B that automatically switch based on the filtration pressure differential, i.e., the cartridge filters are in the form of one-on-one-off cartridges. The water outlet pipe 33 of the multi-pipe cyclone separator 3 is respectively communicated with the water inlet of the first security filter 4-A and the water inlet of the second security filter 4-B, and the water outlet of the first security filter 4-A and the water outlet of the second security filter 4-B are respectively communicated with the water inlet of the membrane filter 6.
The cartridge filters 4-a, 4-B intercept suspended matters and large-particle coke powder in the sewage discharged from the water outlet pipe 33 of the multi-pipe cyclone separator 3 and discharge the sewage from the bottom of the cartridge filters through a path S5 to form sludge. Therefore, the oil removing device of the embodiment realizes the respective discharge of the floating oil and the oil sludge, does not need to be provided with an oil sludge separation facility, and reduces the subsequent treatment requirement.
In this embodiment, the membrane filter 6 is a ceramic membrane filter 6. The ceramic membrane filter 6 can adopt a plurality of groups of Al2O3The filter precision of the ceramic membrane filter element subjected to composite sintering is 0.1-0.5 mu m, and the ceramic membrane filter element is used for deeply removing micro coke powder and oil in sulfur-containing sewage, so that the requirement of acidic water stripping feeding is met. However, the present invention is not limited thereto, and in other alternative embodiments, the membrane filter 6 may also be other types of membrane filters, allBelongs to the protection scope of the utility model.
In this embodiment, the water outlet of the ceramic membrane filter 6 is also communicated with the feed pipe of the multi-pipe cyclone separator 3, and during feeding, the sulfur-containing sewage, the chemical agent and the circulating concentrated solution passing through the peak-shifting filtering part of the ceramic membrane filter 6 enter the feed pipe 31 of the multi-pipe cyclone separator 3 together.
In this embodiment, the deep oil removal device for coking wastewater containing sulfur further comprises a wastewater circulating pump 5. The water inlet of the sewage circulating pump 5 is respectively communicated with the water outlet of the cartridge filter and the water outlet of the ceramic membrane filter 6, the sewage filtered by the cartridge filter is mixed with the other part of circulating concentrated solution filtered by the ceramic membrane filter 6 in a staggered mode and enters the sewage circulating pump 5 for pressurization, and the water outlet of the sewage circulating pump 5 is communicated with the water inlet of the membrane filter 6. Therefore, in this embodiment, the ceramic membrane filter 6 employs a peak-shifting filtering technique to deeply filter the oil and the coke powder in the sewage, so that the filtered sulfur-containing sewage meets the feeding requirement of the acid water stripper.
The utility model discloses an adopt multicell cyclone 3, compare in traditional sedimentation separator, can be so that fluid centrifugation whirl, oil-water separation with higher speed, the cyclone tube structure can effectively reduce the height of separator, and the structure is compacter. The cyclone separator 32 of multi-tube cyclone separator 3 comprises many seamless steel pipes, and the steel pipe can adopt specification DN 300-DN 500, and the quantity of cyclone separator 32 can be confirmed according to actual throughput, is generally 1 ~ 10, nevertheless the utility model discloses be not limited to this.
As shown in fig. 2, in this embodiment, the feeding pipe 31 includes a feeding header 311 and a plurality of feeding branch pipes 312, the feeding header 311 is disposed around the cyclone separation pipe 32, and the feeding branch pipes 312 include a feeding section and a connecting section, the feeding section is communicated with the cyclone separation pipe 32, and the connecting section is communicated between the feeding section and the feeding header 311. Preferably, the axial direction of the feeding section of the feeding branch pipe 312 and the cyclone separation pipe 32 has an included angle of 25-35 degrees, and the requirement of the feeding flow rate can be ensured through the matching of the specification and the size of the cyclone separation pipe 32 and the feeding branch pipe 312, so that the coking sulfur-containing sewage can better generate centrifugal cyclone in the cyclone separation pipe 32, and the oil-water separation efficiency in the sewage is improved.
Each of the cyclone separation tubes 32 corresponds to two of the feeding branch tubes 312, and the two feeding branch tubes 312 are symmetrically disposed at the side of the cyclone separation tube 32. Therefore, each cyclone separation tube 32 is bilaterally symmetrical to feed, an oil outlet is formed in the top of the upper end of each cyclone separation tube 32, and a sewage port is formed in the bottom of the lower end of each cyclone separation tube 32. The mixed feed enters from the water inlet header pipe 311 and is distributed to each cyclone separation pipe 32 from the feed branch pipe 312, under the condition of certain flow rate and spraying angle, the fluid enters the cyclone separation pipes 32 to generate centrifugal cyclone, and due to the density difference of various substances in the fluid, the three-phase separation of oil, water and solid is accelerated, wherein the oil is accumulated at the upper parts of the separation pipes 32 and is discharged from the top oil outlet, and the water and the solid are discharged from the lower water outlet and enter the water outlet pipe 33.
Furthermore, a feeding branch shut-off valve 313 is arranged on the connection section of each feeding branch pipe 312, and the working state of the corresponding cyclone separation pipe 32 can be controlled by opening and closing the feeding branch shut-off valve 313. When the sewage flow changes, for example, the sewage flow is increased, the number of the cyclone separation pipes 32 in use can be increased, for example, the sewage flow is decreased, and some feeding branch cut-off valves 313 can be closed more to reduce the number of the cyclone separation pipes 32 in use, so that the sewage treatment device is more flexible to use and is suitable for a scene with larger sewage flow fluctuation.
Through adopting the utility model discloses a degree of depth deoiling device handles coking and contains sulphur sewage, can guarantee the feeding requirement of low reaches sour water strip with the burnt powder and the oily degree of depth desorption in the sewage. For example, the oil content in the feed of the coking sulfur-containing sewage is 500-10000 mg/L, the coke powder content is 50-2000 mg/L, and after the deep oil removal device is used for treatment, the oil content in the sewage can be lower than 100mg/L, and the coke powder content can be lower than 10 mg/L.
In summary, compared with the prior art, the utility model provides a through the combined treatment process of chemical agent + weak whirl + membrane filtration, can the degree of depth desorption burnt powder and oil in the sulphur sewage, satisfy the requirement of acid water stripping feeding, combine multitube cyclone, under the effect of chemical agent, got rid of most superficial oil, suspended solid and burnt powder, reduced membrane filter's burden, reduced membrane filter's cost to reduce the cost of whole sewage degree of depth deoiling device; furthermore, a security filter can be added to realize the respective discharge of the floating oil and the oil sludge without arranging an oil sludge separation facility, thereby reducing the subsequent treatment requirement; the device adopts a closed system, and can not generate toxic, harmful and malodorous volatile gas in the physical process of sulfur-containing sewage, thereby ensuring the safety of field operation.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. The utility model provides a coking contains sulphur sewage degree of depth deoiling device, a serial communication port, the device is including containing sulphur sewage charge pump (1), medicament charge pump (2), multi-tube cyclone (3) and membrane filter (6), multi-tube cyclone (3) are including inlet pipe (31), a plurality of cyclone (32) and outlet pipe (33), inlet pipe (31) with the lateral wall of cyclone (32) is linked together, outlet pipe (33) with the lower part of cyclone (32) is linked together, contain the discharge gate of sulphur sewage charge pump (1) with the discharge gate of medicament charge pump (2) respectively with inlet pipe (31) of multi-tube cyclone (3) are linked together, the outlet pipe (33) of multi-tube cyclone (3) with the water inlet of membrane filter (6) is linked together.
2. The deep oil removal device for coking wastewater containing sulfur according to claim 1, characterized in that the device further comprises a cartridge filter, and the water outlet pipe (33) of the multi-pipe cyclone separator (3) is communicated with the water inlet of the membrane filter (6) through the cartridge filter.
3. The deep oil removal device for coking wastewater containing sulfur according to claim 2, wherein the cartridge filter comprises a first cartridge filter (4-A) and a second cartridge filter (4-B) which are automatically switched according to the filtration pressure difference, the water outlet pipe (33) of the multi-pipe cyclone separator (3) is respectively communicated with the water inlet of the first cartridge filter (4-A) and the water inlet of the second cartridge filter (4-B), and the water outlet of the first cartridge filter (4-A) and the water outlet of the second cartridge filter (4-B) are respectively communicated with the water inlet of the membrane filter (6).
4. The deep oil removing device for coking sewage containing sulfur according to claim 2, characterized in that the device further comprises a sewage circulating pump (5), wherein a water inlet of the sewage circulating pump (5) is respectively communicated with a water outlet of the cartridge filter and a water outlet of the membrane filter (6), and a water outlet of the sewage circulating pump (5) is communicated with a water inlet of the membrane filter (6).
5. The deep oil removing device for coking wastewater containing sulfur according to claim 1, characterized in that the water outlet of the membrane filter (6) is also communicated with the feed pipe of the multi-pipe cyclone separator (3).
6. The deep oil removing device for the coking wastewater containing sulfur according to claim 1, characterized in that the membrane filter (6) is a ceramic membrane filter.
7. The deep oil removing device for coking wastewater containing sulfur according to claim 1, wherein the feeding pipe (31) comprises a feeding header pipe (311) and a plurality of feeding branch pipes (312), the feeding header pipe (311) is arranged around the cyclone separation pipe (32), the feeding branch pipes (312) comprise a feeding section and a connecting section, the feeding section is communicated with the cyclone separation pipe (32), and the connecting section is communicated between the feeding section and the feeding header pipe (311).
8. The deep oil removing device for coking wastewater containing sulfur according to claim 7, characterized in that the feeding section of the feeding branch pipe (312) has an included angle of 25-35 ° with the axial direction of the cyclone separation pipe (32).
9. The deep oil removing device for coking wastewater containing sulfur according to claim 8, characterized in that each cyclone separating pipe (32) corresponds to two feeding branch pipes (312), and the two feeding branch pipes (312) are symmetrically arranged at the side of the cyclone separating pipe (32).
10. The deep oil removing device for coking wastewater containing sulfur according to claim 8, characterized in that a feed branch cut-off valve (313) is arranged on the connection section of each feed branch pipe (312).
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| CN201921458720.7U CN210457761U (en) | 2019-09-02 | 2019-09-02 | Deep oil removing device for coking sulfur-containing sewage |
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| CN201921458720.7U CN210457761U (en) | 2019-09-02 | 2019-09-02 | Deep oil removing device for coking sulfur-containing sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307399A (en) * | 2021-06-16 | 2021-08-27 | 华东理工大学 | Device and method for fractional purification of high-oil-content production water of offshore oil field |
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2019
- 2019-09-02 CN CN201921458720.7U patent/CN210457761U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307399A (en) * | 2021-06-16 | 2021-08-27 | 华东理工大学 | Device and method for fractional purification of high-oil-content production water of offshore oil field |
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