CN214232871U - Oil phase coalescer and separation system - Google Patents
Oil phase coalescer and separation system Download PDFInfo
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- CN214232871U CN214232871U CN202023057361.XU CN202023057361U CN214232871U CN 214232871 U CN214232871 U CN 214232871U CN 202023057361 U CN202023057361 U CN 202023057361U CN 214232871 U CN214232871 U CN 214232871U
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Abstract
The utility model relates to the technical field of oil-water separation, and discloses an oil phase coalescer and a separation system, wherein the oil phase coalescer comprises a coalescing cavity, a liquid inlet, a liquid outlet and a crude oil product outlet, the liquid inlet, the liquid outlet and the crude oil product outlet are communicated with the coalescing cavity, the liquid inlet and the liquid outlet are positioned at the bottom of the coalescing cavity, and the crude oil product outlet is positioned at the top of the coalescing cavity; the oil phase coalescer further comprises a plurality of separation chambers arranged in the coalescing cavity, hydrophilic inner cores are arranged in the separation chambers, liquid holes for liquid phase materials to flow out are formed in the side walls of the separation chambers, and an inlet of each separation chamber is communicated with the liquid inlet. The utility model discloses an oil phase coalescer adopts and is equipped with the separation chamber of hydrophilic inner core in, can be at utmost with the aqueous phase liquid drop absorption, make the water droplet gather into big water droplet, subside in the delivery port department of coalescence chamber bottom at last, and then realize better separation aqueous phase to effectively separate the aqueous phase that carries in the oil phase.
Description
Technical Field
The utility model belongs to the technical field of water oil separating, especially, relate to an oil phase coalescer and piece-rate system.
Background
The water-soluble rhodium-phosphine catalyst catalyzes the liquid phase product of C5-C7 olefin hydroformylation to be a mixture of residual hydrocarbon, product aldehyde and catalyst aqueous solution, and the separation equipment in the prior art directly adopts a phase separation method to separate the mixture, but the phase separation method can cause the loss of the hydroformylation catalyst because the flash gas phase in the hydroformylation product and part of the catalyst can be entrained in the crude aldehyde product.
Therefore, there is a need in the art for an oil-water separation device that can efficiently recover the catalyst carried over in the hydroformylation product to reduce catalyst loss.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defect that the splitter among the prior art can not effectively separate, retrieve the catalyst that carries in the hydroformylation product, provide an oil phase coalescer and piece-rate system, this oil phase coalescer and piece-rate system can effectively retrieve the water phase catalyst that carries in oil phase and the gaseous phase in the hydroformylation product, have reduced the loss of catalyst, are suitable for the catalyst recovery of the two-phase hydroformylation product of profit, energy saving.
In order to achieve the above object, in a first aspect, the present invention provides an oil phase coalescer comprising a coalescing chamber, and a liquid inlet, a water outlet and a crude oil outlet communicated with the coalescing chamber, the liquid inlet and the water outlet being located at the bottom of the coalescing chamber, the crude oil outlet being located at the top of the coalescing chamber;
the oil phase coalescer further comprises a plurality of separation chambers arranged in the coalescing cavity, hydrophilic inner cores are arranged in the separation chambers, liquid holes for liquid phase materials to flow out are formed in the side walls of the separation chambers, and an inlet of each separation chamber is communicated with the liquid inlet.
Preferably, the separation chamber is cylindrical and extends along the height direction of the coalescence cavity, and the hydrophilic inner core is spiral and extends along the axial direction of the separation chamber; and/or
And a water accumulation bag is arranged at the water outlet.
Preferably, the oil phase coalescer further comprises a hydrophobic layer arranged in the coalescing cavity, the hydrophobic layer is located between the crude oil product outlet and the water outlet, the hydrophobic layer divides the coalescing cavity into two chambers, and the separation chamber is located in one of the two chambers close to the water outlet.
Preferably, the hydrophobic layer is a hydrophobic fiber layer.
Preferably, the oil phase coalescer further comprises a liquid distributor arranged in the coalescing cavity, an inlet of the liquid distributor is communicated with the liquid inlet, outlets of the liquid distributor are multiple and are respectively communicated with the separation chambers in a one-to-one correspondence manner, and the liquid distributor is used for distributing the material from the liquid inlet into each separation chamber.
Preferably, the liquid distributor includes a main pipe and a plurality of branch pipes communicated with the main pipe, the plurality of branch pipes are arranged at intervals in the length direction of the main pipe, an inlet of the liquid distributor is arranged on the main pipe, and a plurality of outlets of the liquid distributor are respectively arranged on the plurality of branch pipes.
In a second aspect, the present invention provides a separation system comprising an oil phase coalescer according to the first aspect.
Preferably, the separation system further comprises:
the cooler is used for cooling the materials to be separated and is provided with an inlet for the materials to be separated to enter and an outlet for the cooled materials to be separated to discharge;
the phase separator is used for separating phases of the cooled materials to be separated and is provided with an inlet, an oil phase outlet, a gas phase outlet and a water phase outlet, the inlet of the phase separator is communicated with the outlet of the cooler, and the oil phase outlet of the phase separator is communicated with the liquid inlet so as to separate oil from water in the oil phase obtained by the phase separator through the oil phase coalescer; and
the gas phase coalescer is provided with an inlet, a liquid phase outlet and a gas phase outlet, the inlet of the gas phase coalescer is communicated with the gas phase outlet of the phase separator and used for carrying out gas-liquid separation on the gas phase obtained by the phase separator, and the liquid phase outlet of the gas phase coalescer is communicated with the liquid inlet so as to carry out oil-water separation on the liquid phase obtained after the gas-liquid separation of the gas phase coalescer through the oil phase coalescer.
Preferably, the separation system further comprises a water phase catalyst mother liquor recovery device, and an inlet of the water phase catalyst mother liquor recovery device is communicated with a water phase outlet and a water outlet of the phase separator and is used for recovering the water phase obtained by the phase separator and the water phase obtained by the oil phase coalescer; and/or
The separation system further comprises a synthesis gas recovery device, and the synthesis gas recovery device is communicated with the gas phase outlet of the gas phase coalescer and is used for recovering the gas phase obtained by the gas phase coalescer.
Preferably, the separation system further comprises a product refining device, wherein an inlet of the product refining device is communicated with the crude oil product outlet and is used for refining the crude oil product obtained by the oil phase coalescer.
Compared with the prior art, the utility model discloses an oil phase coalescer adopts and is equipped with the separation chamber of hydrophilic inner core in, can be at utmost with the aqueous phase liquid drop absorption, make the water droplet gather into big water droplet, subside in the delivery port department of coalescence chamber bottom at last, and then realize better separation aqueous phase to effectively separate the aqueous phase that carries in the oil phase.
The utility model discloses a separation system is through adopting the oil phase coalescer of phase separator cooperation specific structure for the catalyst in the moisture that carries in the desorption oil phase and the moisture, cooperation gas phase coalescer simultaneously for the catalyst in the moisture that carries in the desorption gas phase and the moisture can effectively reduce the catalyst amount that carries in oil phase and the gas phase, be convenient for with the aqueous phase that separates and the catalyst that contains recycle, reduced the loss of catalyst, be suitable for catalyst circulation, energy saving; is especially suitable for recovering catalyst from high carbon olefin oil water two-phase hydroformylation product.
Adopt the utility model discloses preferred piece-rate system, the hydrophobic layer that wherein adopts can the at utmost block the passing through of little liquid drop, and moisture in furthest's desorption oil phase realizes the abundant separation of aqueous phase oil phase.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an oil phase coalescer according to the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the separation system of the present invention.
Description of the reference numerals
1-cooler 2-phase separator 3-gas phase coalescer
4-oil phase coalescer 5-product refining device 6-synthetic gas recovery device
A1-inlet A2-oil phase outlet A3-gas phase outlet
A4-aqueous phase outlet
B1-inlet B2-liquid phase outlet B3-gas phase outlet
41-liquid distributor 42-separation chamber 43-hydrophobic layer
44-crude oil outlet 45-water outlet 46-coalescence cavity
47-liquid inlet 48-shell
411-main pipe 412-branch pipe
421-hydrophilic inner core
Detailed Description
In the description of the present invention, it is to be understood that the terms "top", "bottom", "inside", "length direction", "height direction", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In a first aspect, the present invention provides an oil phase coalescer, as shown in fig. 1, wherein the oil phase coalescer 4 comprises a coalescing chamber 46, and a liquid inlet 47, a water outlet 45 and a crude oil outlet 44 communicated with the coalescing chamber 46, the liquid inlet 47 and the water outlet 45 are located at the bottom of the coalescing chamber 46, and the crude oil outlet 44 is located at the top of the coalescing chamber 46;
the oil phase coalescer 4 further comprises a plurality of separation chambers 42 arranged in the coalescing cavity 46, a hydrophilic inner core 421 is arranged in each separation chamber 42, liquid holes (not shown) for allowing liquid phase materials (including water phase and oil phase) to flow out are formed in the side wall of each separation chamber 42, and the inlet of each separation chamber 42 is communicated with the liquid inlet 47.
The utility model discloses an oil phase coalescer adopts the separation chamber 42 that is equipped with hydrophilic inner core 421 in, hydrophilic inner core 421 can be furthest adsorbs the aqueous phase liquid drop, and does not adsorb the oil phase, and then makes the quick flow out from separation chamber 42 of oil phase, and the aqueous phase is owing to be adsorbed by hydrophilic inner core 421, makes the water droplet gather into big water droplet, then big water droplet and oil phase pass through together in the liquid hole flows into coalescence chamber 46, and last aqueous phase subsides in the delivery port 45 department of coalescence chamber 46 bottom, and then realizes better separation aqueous phase to when making to be applied to the double-phase hydroformylation product of profit, can effectively separate the aqueous phase catalyst that carries in the oil phase.
In the present invention, as shown in fig. 1 and 2, the oil phase coalescer 4 includes a housing 48, the above coalescing chamber 46 is formed in the housing 48, and the above liquid inlet 47, the water outlet 45 and the crude oil outlet 44 are provided on the housing 48.
In the present invention, the skilled person can select the number of the separation chambers 42 according to actual requirements, and the present invention has no limitation to this. The utility model discloses it is right a plurality of separation chambers 42's arrangement does not have any restriction, can be the array mode of multirow multiseriate and arrange, also can arrange for the mode or other forms of single file or list.
It will be appreciated that the hydrophilic core 421 can be fixed in the separation chamber 42 in any conventional manner, and the object of the present invention can be achieved, for example, by providing a rigid support shaft along the extending direction of the hydrophilic core 421, and fixing the two ends of the support shaft on the separation chamber 42. The separation chamber 42 may be secured to the housing 48 in any conventional manner that allows for separation of the incoming stream through inlet port 47.
The utility model discloses in, it is right the separation chamber 42 with the optional scope broad of shape of hydrophilic inner core 421, as long as do benefit to the aqueous phase catalyst that carries in the separation oil phase can. Preferably, the separation chamber 42 is a column shape extending along the height direction of the coalescing chamber 46, and the hydrophilic inner core 421 is a spiral shape extending along the axial direction of the separation chamber 42. Under this preferred scheme, the contact area of hydrophilic inner core 421 and liquid phase can be increased to the hydrophilic inner core 421 of heliciform, increases the water absorption capacity of hydrophilic inner core 421 to the aqueous phase catalyst that carries in the better separation oil phase is favorable to. The utility model discloses it is right the material of hydrophilic inner core 421 does not have any restriction, as long as can do benefit to the coalescence water droplet can, for example can be hydrophilic fiber inner core, hydrophilic fiber is preferred glass fiber.
According to the present invention, preferably, a water collecting bag (not shown in the figure) is disposed at the water outlet 45 for collecting the water phase catalyst after oil-water separation. It will be appreciated that there is no limitation on the manner of connection between the drip bag and the water outlet 45, for example the drip bag may be secured to the water outlet 45.
According to the present invention, preferably, the oil phase coalescer 4 further comprises a hydrophobic layer 43 disposed in the coalescing chamber 46, the hydrophobic layer 43 is located between the crude oil outlet 44 and the water outlet 45, the hydrophobic layer 43 divides the coalescing chamber 46 into two chambers (see two chambers located above and below the hydrophobic layer 43 in fig. 1), and the separation chamber 42 is located in a chamber (i.e., a lower chamber in fig. 1) near the water outlet 45 side of the two chambers. Under the preferable scheme, the water drops which are not completely removed and gathered through the hydrophilic inner core 421 can be gathered and settled again in the hydrophobic layer 43, the hydrophobic layer 43 can further prevent the small drops from passing through to the greatest extent, the water in the oil phase is removed to the greatest extent, and the water phase and the oil phase are fully separated.
In the present invention, the hydrophobic layer 43 is made of a material that does not allow water droplets to pass through. Preferably, the hydrophobic layer 43 is a hydrophobic fiber layer.
In the present invention, preferably, oil phase coalescer 4 further comprises a liquid distributor 41 disposed in coalescing chamber 46, the inlet of liquid distributor 41 is communicated with liquid inlet 47, the outlet of liquid distributor 41 is multiple and respectively communicated with multiple separating chambers 42 in one-to-one correspondence, for distributing the material from liquid inlet 47 into each separating chamber 42. Adopt the preferred scheme of the utility model, the setting of above-mentioned liquid distributor 41 makes the liquid phase that gets into oil phase coalescer 4 can be even in a plurality of separation chambers 42 of inflow, does benefit to the separation efficiency who further improves the liquid phase.
The liquid distributor 41 of the present invention has a wide range of selection of specific structures, so long as it is favorable to better distribute the liquid phase uniformly in the plurality of separation chambers 42; preferably, the liquid distributor 41 includes a main pipe 411 (which may be a straight pipe or an elbow pipe, preferably a straight pipe) and a plurality of branch pipes 412 (which may be a straight pipe or an elbow pipe, preferably a straight pipe) communicated with the main pipe 411, the plurality of branch pipes 412 are arranged at intervals in the length direction of the main pipe 411, an inlet of the liquid distributor 41 is disposed on the main pipe 411, and a plurality of outlets of the liquid distributor 41 are respectively disposed on the plurality of branch pipes 412. It is understood that the plurality of outlets of the liquid distributor 41 correspond to the plurality of branch pipes 412 one to one.
The utility model discloses an oil phase coalescer is applicable to the separation liquid phase of treating that carries a small amount of aqueous phase in the oil phase, and this type of the separation liquid phase of treating can't adopt traditional separator to effectively separate, and the utility model discloses an oil phase coalescer can be with the better separation of a small amount of aqueous phase in the oil phase. It will be appreciated that when the liquid phase to be separated is relatively low in water, the hydrophilic inner core 421 can be used for a relatively long time to coalesce the small water droplets to form large water droplets until the coalesced large water droplets eventually settle out at the water outlet 45 by gravity. Of course, the hydrophilic inner core 421 can be replaced periodically according to actual needs by those skilled in the art. In addition, to the higher liquid phase of treating the separation of water content, can carry out preliminary separation back through traditional separator earlier, reuse the utility model discloses an oil phase coalescer further separates.
According to a preferred embodiment of the present invention, as shown in fig. 1, the oil phase coalescer comprises a coalescing chamber 46, and a liquid inlet 47, a water outlet 45 and a crude oil outlet 44 communicated with the coalescing chamber 46, wherein the liquid inlet 47 and the water outlet 45 are located at the bottom of the coalescing chamber 46, and the crude oil outlet 44 is located at the top of the coalescing chamber 46;
the oil phase coalescer 4 further comprises a plurality of separation chambers 42 arranged in the coalescing cavity 46, a hydrophilic inner core 421 is arranged in each separation chamber 42, liquid holes for liquid phase materials to flow out are formed in the side wall of each separation chamber 42, and the inlet of each separation chamber 42 is communicated with the liquid inlet 47;
the separation chamber 42 is a column extending along the height direction of the coalescence cavity 46, and the hydrophilic inner core 421 is a spiral extending along the axial direction of the separation chamber 42;
the oil phase coalescer 4 further comprises a hydrophobic layer 43 arranged in the coalescing chamber 46, the hydrophobic layer 43 is positioned between the crude oil outlet 44 and the water outlet 45, the hydrophobic layer 43 divides the coalescing chamber 46 into two chambers, and the separation chamber 42 is positioned in one of the two chambers close to the water outlet 45;
the oil phase coalescer 4 further comprises a liquid distributor 41 arranged in the coalescing cavity 46, an inlet of the liquid distributor 41 is communicated with the liquid inlet 47, a plurality of outlets of the liquid distributor 41 are respectively communicated with the plurality of separation chambers 42 in a one-to-one correspondence manner, and the liquid distributor 41 is used for distributing the material from the liquid inlet 47 into each separation chamber 42; the liquid distributor 41 includes a main pipe 411 and a plurality of branch pipes 412 communicated with the main pipe 411, the plurality of branch pipes 412 are arranged at intervals in the length direction of the main pipe 411, an inlet of the liquid distributor 41 is disposed on the main pipe 411, and a plurality of outlets of the liquid distributor 41 are respectively disposed on the plurality of branch pipes 412. Under this preferred scheme, can further improve oil-water separation effect.
When the oil phase coalescer 4 of the utility model is used, the liquid phase to be separated flows into the liquid distributor 41 through the liquid inlet 47 and flows into each separation chamber 42 through the main pipe 411 and the branch pipe 412; the water phase is separated by the hydrophilic inner core 421 in the separation chamber 42, so that the water phase can be absorbed to the maximum extent, small water drops collide and gather into large drops, then the large drops flow into the coalescence cavity 46 through the liquid hole, flow downwards to the bottom of the coalescence cavity 46 by virtue of gravity, and finally are discharged out of the oil phase coalescer 4 after being gathered by the water accumulation bag at the water outlet 45; after the oil phase flows out through the hydrophilic inner core 421 and the liquid hole, the oil phase is positioned at the upper part of the water phase due to the lower density, the water level of the oil phase gradually rises along with the gradual increase of the materials in the coalescence cavity 46, and after the further oil phase passes through the hydrophobic layer 43, the water drops in the oil phase are further gathered and settled and separated from the oil phase; thereby achieving maximum separation of the aqueous phase from the oil phase.
In a second aspect, the present invention provides a separation system comprising an oil phase coalescer 4 according to the first aspect. The oil phase coalescer 4 of the utility model can be used in any system which needs oil-water separation.
In the present invention, preferably, as shown in fig. 2, the separation system further includes:
the cooler 1 is used for cooling materials to be separated, and the cooler 1 is provided with an inlet (not shown in the figure) for the materials to be separated to enter and an outlet (not shown in the figure) for the cooled materials to be separated to discharge;
the phase separator 2 is used for carrying out phase separation on the cooled materials to be separated, the phase separator 2 is provided with an inlet A1, an oil phase outlet A2, a gas phase outlet A3 and a water phase outlet A4, the inlet A1 is communicated with the outlet of the cooler 1, and the oil phase outlet A2 is communicated with a liquid inlet 47 of the oil phase coalescer 4 so as to carry out oil-water separation on the oil phase obtained by the phase separator 2 through the oil phase coalescer 4; and
and the gas phase coalescer 3 is provided with an inlet B1, a liquid phase outlet B2 and a gas phase outlet B3, the inlet B1 is communicated with the gas phase outlet A3 and is used for carrying out gas-liquid separation on the gas phase obtained by the phase separator 2, and the liquid phase outlet B2 is communicated with the liquid inlet 47 so as to carry out oil-water separation on the liquid phase obtained after the gas-liquid separation of the gas phase coalescer 3 by the oil phase coalescer 4.
The utility model discloses in, preferably, the piece-rate system still includes aqueous phase catalyst mother liquor recovery unit (not shown in the figure), aqueous phase catalyst mother liquor recovery unit's entry with aqueous phase export A4 with delivery port 45 intercommunication, be used for with the aqueous phase that phase separator 2 obtained with the aqueous phase that oil phase coalescer 4 obtained is retrieved.
The utility model discloses in, the piece-rate system still includes synthesis gas recovery unit 6, synthesis gas recovery unit 6 with gas phase outlet B3 intercommunication, be used for with the gaseous phase that gas phase coalescer 3 obtained is retrieved.
The utility model discloses in, preferably, the piece-rate system still includes product refining plant 5, product refining plant 5's entry with crude oil export 44 intercommunication is used for with the crude oil that oil phase coalescer 4 obtained refines.
The utility model discloses in, there is not any restriction to the concrete structure of above-mentioned cooler 1, phase separator 2 and aqueous phase catalyst mother liquor recovery unit, synthetic gas recovery unit 6, product refining plant 5, as long as can realize above-mentioned respective function respectively can, for example can be the corresponding device of market. The utility model has no limitation to the technological parameters of the cooler 1, the phase separator 2, the gas phase coalescer 3, the water phase catalyst mother liquor recovery device, the synthesis gas recovery device 6 and the product refining device 5, and is beneficial to improving the separation effect; the person skilled in the art can freely choose them according to the actual requirements.
The utility model discloses a piece-rate system can be used for any need with oil water separation's material, for example the oil-water separation in the two-phase hydroformylation product of profit, is particularly useful for the aqueous phase catalyst recovery of the two-phase hydroformylation product of high carbon olefin profit. The utility model discloses a piece-rate system effectively reduces the water content in gaseous phase, the coarse aldehyde of product (being the oil phase) when being used for the separation of the two-phase hydroformylation product of profit to reduced the catalytic dose that gaseous phase, oil phase smugglied secretly, reduced the loss of catalyst.
According to a preferred embodiment of the present invention, as shown in fig. 2, the separation system further comprises:
the cooler 1 is used for cooling materials to be separated, and the cooler 1 is provided with an inlet (not shown in the figure) for the materials to be separated to enter and an outlet (not shown in the figure) for the cooled materials to be separated to discharge;
the phase separator 2 is used for carrying out phase separation on the cooled materials to be separated, the phase separator 2 is provided with an inlet A1, an oil phase outlet A2, a gas phase outlet A3 and a water phase outlet A4, the inlet A1 is communicated with the outlet of the cooler 1, and the oil phase outlet A2 is communicated with a liquid inlet 47 of the oil phase coalescer 4 so as to carry out oil-water separation on the oil phase obtained by the phase separator 2 through the oil phase coalescer 4; and
a gas phase coalescer 3, wherein the gas phase coalescer 3 is provided with an inlet B1, a liquid phase outlet B2 and a gas phase outlet B3, the inlet B1 is communicated with the gas phase outlet A3 and is used for carrying out gas-liquid separation on the gas phase obtained by the phase separator 2, and the liquid phase outlet B2 is communicated with the liquid inlet 47 so as to carry out oil-water separation on the liquid phase obtained after the gas-liquid separation of the gas phase coalescer 3 by the oil phase coalescer 4;
the separation system further comprises a water phase catalyst mother liquor recovery device (not shown in the figure), wherein an inlet of the water phase catalyst mother liquor recovery device is communicated with the water phase outlet A4 and the water outlet 45 and is used for recovering the water phase obtained by the phase separator 2 and the water phase obtained by the oil phase coalescer 4;
the separation system also comprises a synthesis gas recovery device 6, the synthesis gas recovery device 6 is communicated with the gas phase outlet B3 and is used for recovering the gas phase obtained by the gas phase coalescer 3;
the separation system also comprises a product refining device 5, wherein the inlet of the product refining device 5 is communicated with the crude oil product outlet 44 and is used for refining the crude oil product obtained by the oil phase coalescer 4. Under this preferred scheme, can further improve the separation effect of waiting to separate the material.
The utility model discloses a when separation system used, as shown in fig. 2, wait to separate the material and cool off through cooler 1, then flow into phase splitter 2 through entry A1 and carry out the phase splitting, obtain aqueous phase, oil phase and gaseous phase. The aqueous phase flows out from the aqueous phase outlet a4, flows into an aqueous phase catalyst mother liquor recovery device, and can be recycled to the reactor for use. The oil phase flows out through an oil phase outlet A2 and flows into the oil phase coalescer 4 through a liquid inlet 47 for oil-water separation. The gas phase flows out through a gas phase outlet A3, flows into the gas phase coalescer 3 through an inlet B1, after the coalescence dehydration of the gas phase coalescer 3, the water phase flows out of a liquid phase outlet B2 and flows into the oil phase coalescer 4 for oil-water separation, and the gas phase flows into the synthesis gas recovery device 6 for collection through a gas phase outlet B3. The oil-water separation process of the oil phase coalescer 4 is as described above, and will not be described herein.
After oil-water separation is carried out by the oil phase coalescer 4, the obtained crude oil flows out from a crude oil outlet 44 and further flows into a product refining device 5 for subsequent treatment; the obtained water phase flows out from a water outlet 45 and further flows into a water phase catalyst mother liquor recovery device, and the water phase and the catalyst therein can be recycled to the reactor for continuous use; thereby realizing the effective separation of the materials to be separated.
The present invention will be described in detail below by way of examples. In the following examples, the material to be separated is oil-water two-phase hydroformylation product obtained by the formylation of Fischer-Tropsch C5-C7 alpha-olefin with hydrogen and carbon monoxide, for illustrative purposes.
Example 1
As shown in fig. 1 and fig. 2, the material to be separated is cooled by a cooler 1, wherein the outlet temperature of the cooler 1 is 40 ℃, and the outlet pressure is 1.0 MPa; then flows into a phase separator 2 through an inlet A1 to carry out phase separation, wherein the operating conditions of the phase separator 2 are that the temperature is 40 ℃ and the pressure is 0.8MPa, and a water phase, an oil phase and a gas phase are obtained. The aqueous phase flows out from the aqueous phase outlet a4, flows into an aqueous phase catalyst mother liquor recovery device, and can be recycled to the reactor for use. The oil phase flows out through an oil phase outlet A2 and flows into the oil phase coalescer 4 through a liquid inlet 47 for oil-water separation. The gas phase flows out through a gas phase outlet A3 and flows into a gas phase coalescer 3 through an inlet B1, wherein the operating condition of the gas phase coalescer 3 is that the temperature is 40 ℃ and the pressure is 0.65MPa, after the coalescence dehydration of the gas phase coalescer 3, the water phase flows out of a liquid phase outlet B2 and flows into an oil phase coalescer 4 for oil-water separation, and the gas phase flows into a synthesis gas recovery device 6 for collection through a gas phase outlet B3. Wherein the operating conditions of the oil phase coalescer 4 are 40 ℃ and 0.5 MPa.
The oil-water separation process of the oil phase coalescer 4 is as follows: the aqueous phase flows into the liquid distributor 41 through the liquid inlet 47, and flows into the respective columnar separation chambers 42 (single row of 7 separation chambers) through the main pipe 411 and the branch pipes 412; the water phase is separated by the spiral hydrophilic inner core 421 in the separation chamber 42, small water drops collide and gather into large drops, the large drops separated by the separation chamber 42 flow into the coalescence cavity 46 through a liquid hole, flow downwards into the bottom of the coalescence cavity 46 by means of gravity, are collected by a water accumulation bag at the water outlet 45 and are finally discharged out of the oil phase coalescer 4; the oil phase separated in the separation chamber 42 flows out through the hydrophilic inner core 421 and the liquid hole, and is located in the upper layer of the water phase, the water level of the oil phase gradually rises along with the gradual increase of the materials in the coalescence cavity 46, and further passes through the hydrophobic layer 43 (which is a hydrophobic fiber layer), and then the water drops in the oil phase are further gathered and settled, and are separated from the oil phase, so that crude oil is obtained.
After oil-water separation is carried out by the oil phase coalescer 4, the obtained crude oil flows out from a crude oil outlet 44 and further flows into a product refining device 5 for subsequent treatment; the obtained water phase flows out from the water outlet 45 and further flows into a water phase catalyst mother liquor recovery device.
After the complete separation, the loss rate of the catalyst in the recovered water phase is less than 0.2 percent. Wherein, the calculation formula of the loss rate of the catalyst is as follows: the catalyst loss rate (amount of catalyst carried in the gas phase outlet B3 + amount of catalyst carried in the crude oil outlet 44)/amount of catalyst in the material to be separated × 100%.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. In the technical idea scope of the present invention, it can be right to the technical solution of the present invention perform multiple simple modifications, including each technical feature combined in any other suitable manner, these simple modifications and combinations should be regarded as the disclosed content of the present invention, and all belong to the protection scope of the present invention.
Claims (10)
1. An oil phase coalescer, characterized in that the oil phase coalescer (4) comprises a coalescing chamber (46), and a liquid inlet (47), a water outlet (45) and a crude oil outlet (44) which are communicated with the coalescing chamber (46), the liquid inlet (47) and the water outlet (45) are positioned at the bottom of the coalescing chamber (46), and the crude oil outlet (44) is positioned at the top of the coalescing chamber (46);
the oil phase coalescer (4) further comprises a plurality of separation chambers (42) arranged in the coalescing cavity (46), hydrophilic inner cores (421) are arranged in the separation chambers (42), liquid holes for liquid phase materials to flow out are formed in the side walls of the separation chambers (42), and an inlet of each separation chamber (42) is communicated with the liquid inlet (47).
2. The oil phase coalescer according to claim 1,
the separation chamber (42) is in a columnar shape extending along the height direction of the coalescence cavity (46), and the hydrophilic inner core (421) is in a spiral shape extending along the axial direction of the separation chamber (42); and/or
A water accumulation bag is arranged at the water outlet (45).
3. The oil phase coalescer according to claim 1, wherein the oil phase coalescer (4) further comprises a hydrophobic layer (43) disposed in the coalescing chamber (46), the hydrophobic layer (43) being located between the crude oil outlet (44) and the water outlet (45), the hydrophobic layer (43) dividing the coalescing chamber (46) into two chambers, the separation chamber (42) being located in one of the two chambers on a side adjacent to the water outlet (45).
4. The oil phase coalescer according to claim 3, wherein the hydrophobic layer (43) is a hydrophobic fiber layer.
5. The oil phase coalescer according to any one of claims 1 to 4, wherein the oil phase coalescer (4) further comprises a liquid distributor (41) disposed in the coalescing chamber (46), an inlet of the liquid distributor (41) communicating with the liquid inlet (47), and outlets of the liquid distributor (41) being plural and communicating with the plurality of separation chambers (42), respectively, in one-to-one correspondence for distributing material from the liquid inlet (47) into each separation chamber (42).
6. The oil phase coalescer according to claim 5, wherein the liquid distributor (41) comprises a main pipe (411) and a plurality of branch pipes (412) communicating with the main pipe (411), the plurality of branch pipes (412) being arranged at intervals in the length direction of the main pipe (411), the inlet of the liquid distributor (41) being provided on the main pipe (411), and the plurality of outlets of the liquid distributor (41) being provided on the plurality of branch pipes (412), respectively.
7. A separation system comprising an oil phase coalescer (4) according to any of claims 1-6.
8. The separation system of claim 7, further comprising:
the cooler (1) is used for cooling the materials to be separated, and the cooler (1) is provided with an inlet for the materials to be separated to enter and an outlet for the cooled materials to be separated to discharge;
the phase separator (2) is used for separating phases of the cooled materials to be separated, the phase separator (2) is provided with an inlet (A1), an oil phase outlet (A2), a gas phase outlet (A3) and a water phase outlet (A4), the inlet (A1) is communicated with the outlet of the cooler (1), and the oil phase outlet (A2) is communicated with the liquid inlet (47) so as to separate oil and water of the oil phase obtained by the phase separator (2) through the oil phase coalescer (4); and
the gas phase coalescer (3) is provided with an inlet (B1), a liquid phase outlet (B2) and a gas phase outlet (B3), the inlet (B1) is communicated with the gas phase outlet (A3) and used for carrying out gas-liquid separation on the gas phase obtained by the phase separator (2), and the liquid phase outlet (B2) is communicated with the liquid inlet (47) so as to carry out oil-water separation on the liquid phase obtained after the gas-liquid separation of the gas phase coalescer (3) through the oil phase coalescer (4).
9. The separation system of claim 8,
the separation system also comprises a water phase catalyst mother liquor recovery device, wherein the inlet of the water phase catalyst mother liquor recovery device is communicated with the water phase outlet (A4) and the water outlet (45) and is used for recovering the water phase obtained by the phase separator (2) and the water phase obtained by the oil phase coalescer (4); and/or
The separation system further comprises a syngas recovery device (6), the syngas recovery device (6) being in communication with the gas phase outlet (B3) for recovering the gas phase obtained by the gas phase coalescer (3).
10. A separation system according to any one of claims 7-9, further comprising a product refining unit (5), the inlet of the product refining unit (5) being in communication with the crude oil outlet (44) for refining the crude oil obtained from the oil phase coalescer (4).
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