CN204455007U - A kind of profit initial gross separation device of the oil gas washing that is coupled - Google Patents
A kind of profit initial gross separation device of the oil gas washing that is coupled Download PDFInfo
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- CN204455007U CN204455007U CN201520090990.2U CN201520090990U CN204455007U CN 204455007 U CN204455007 U CN 204455007U CN 201520090990 U CN201520090990 U CN 201520090990U CN 204455007 U CN204455007 U CN 204455007U
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Abstract
The utility model relates to a kind of profit initial gross separation device of the oil gas washing that is coupled, comprise housing, inlet pipe, the wet oil entrance be successively set on described inlet pipe, gas containing hydrocarbon entrance, be built in inlet pipe tubular type gas-liquid mixed unit and to be embedded on inlet pipe and to be in the T-shaped liquid-gas separator of enclosure interior, the right of T-shaped liquid-gas separator is disposed with rectification sparger, wetting ability coarse module, CPI fast dewatering module and dividing plate; The right of dividing plate is disposed with CPI quick deoiling module, lipophilicity coarse module; The right part of housing is provided with oily(waste)water import, and is connected with oily(waste)water import and is in the inlet distributor of enclosure interior; Housing is provided with gas liquid remover near top place, and case top is provided with gaseous phase outlet.The utility model has been coupled the function of oily dehydration, water de-oiling and oil gas washing and recycling, and floor space is little, is separated efficient rapidly, compensate for the deficiencies in the prior art.
Description
Technical field
The present invention relates to refining of petroleum or coal chemical technology, relate in a kind of Fischer-Tropsch synthesis process the profit initial gross separation device of the oil gas washing that is coupled.
Background technology
F-T synthesis (Fischer-Tropsch synthesis) is one of ICL for Indirect Coal Liquefaction technology, and can react referred to as FT, it is with synthetic gas (CO and H
2) under catalyzer (mainly iron system) and appropriate reaction condition, synthesize the technological process of the liquid fuel based on paraffinic hydrocarbon for raw material.The product of F-T synthesis coal liquifaction mainly contains gasoline, diesel oil, kerosene and aviation fuel, lubricating oil and paraffin etc.F-T synthesis ICL for Indirect Coal Liquefaction product is oil-water mixture, and the high efficiency separation of profit is to reduction product cost important.
In F-T synthesis, the method for important employing gravity settling carries out being separated (the technological design of Fischer-Tropsch synthesis process water-and-oil separator at present, chemical engineering design, 2010, 20 (1)) autoreactor out after separate wet oil and oil-containing water through the settlement action of high-pressure separator, entering Horizontal oil-water separator carries out settlement separate further, large tank is entered again settlement separate after separation, due to the operational condition of F-T synthesis, oil-water emulsion phenomenon is more serious, because gravity settling separation effectively can only be greater than oil droplet or the water droplet of 50 μm of free states by particle separation diameter, therefore generally after preliminary oily water separation, adopt the large tank standing sedimentation separate design time more than 8 hours.Occupation area of equipment is large, material consumption is large and efficiency is low.Also containing a small amount of hydro carbons in the gaseous component of discharging after technical process mesolow is separated in addition, establish washing device washing and recycling generally separately, need supporting operation control system, the high and more complicated of cost.Therefore the efficient oil-water separation method of employing type is needed to be optimized current technology.
Summary of the invention
In view of the above problems, the invention provides in a kind of Fischer-Tropsch synthesis process the profit initial gross separation device of the oil gas washing that is coupled, it is in conjunction with F-T synthesis profit characteristic, utilize condensation material characteristic and flow field to regulate and control idetified separation that profit is carried out in two aspects, and the function of the oily dehydration that has been coupled, water de-oiling and oil gas washing and recycling, floor space is little, is separated efficient rapidly, compensate for the deficiency of existing gravity settling separation method.
Concrete technical scheme is:
A kind of profit initial gross separation device of the oil gas washing that is coupled, described initial gross separation device comprise housing, inlet pipe, the wet oil entrance be successively set on described inlet pipe, gas containing hydrocarbon entrance, be built in described inlet pipe tubular type gas-liquid mixed unit and to be embedded on described inlet pipe and to be in the T-shaped liquid-gas separator of described enclosure interior, the right of described T-shaped liquid-gas separator is disposed with rectification sparger, wetting ability coarse module, CPI fast dewatering module and dividing plate;
The right of described dividing plate is disposed with CPI quick deoiling module, lipophilicity coarse module;
The right part of described housing is provided with oily(waste)water import, and is connected with described oily(waste)water import and is in the inlet distributor of described enclosure interior;
Described housing is provided with gas liquid remover near top place, and described case top is provided with gaseous phase outlet.
Be provided with water bag between described wetting ability coarse module and CPI fast dewatering module, described water bag is in the bottom of described housing, and described water wrap be provided with oil water interface controller, bottom be provided with aqueous phase outlet.
The right and left near described dividing plate is respectively equipped with fluid level controller and oil water interface controller, and the housing bottom relative with described fluid level controller has oil phase and export, and the housing bottom relative with described oil water interface controller has aqueous phase and export.
Described housing is horizontal or vertical.
The profit initial gross separation device utilizing above-mentioned coupling oil gas to wash carries out the method be separated, and comprises the following steps:
Step 1: by containing 0.5 ~ 6% synthetic water light oil (flow velocity is 1 ~ 3m/s) with containing low point of gas of 0.1 ~ 2.6% micro-hydrocarbon in mixing, washing section after mixing, washing, the left side end socket of initial gross separation device sent into by the light oil wherein entering micro-hydrocarbon, and the sewage of oil-containing 0.05 ~ 0.5% then sends into the right side end socket of described initial gross separation device; The working pressure of described initial gross separation device is 0.3 ~ 4.5MPa, and temperature is 20 ~ 60 DEG C, and the length of described mixing, washing section is 2.5 ~ 4 times of diameter;
Step 2: first realize quick liquid gas after each component of step 1 enters described initial gross separation device and be separated in T-shaped liquid-gas separator, isolated purified gas is discharged from the top of described initial gross separation device after gas liquid remover;
Moisture light oil flows to the right from the left side end socket of described initial gross separation device with flow velocity 0.005 ~ 0.02m/s, fast dewatering process is carried out successively by rectification sparger, wetting ability coarse module, CPI fast dewatering module, isolate the water droplet that particle diameter is greater than 30 μm, light Water in oil 0.05 ~ 0.5% after being separated, isolated sewage is entered water bag and is discharged by oil water interface controller, and the oil content after dehydration flow on the left of dividing plate;
Oily(waste)water flows left from the right side end socket of described initial gross separation device with flow velocity 0.01 ~ 0.03m/s, quick deoiling is carried out successively by inlet distributor, lipophilicity coarse module, CPI quick deoiling module, isolate the oil droplet that particle diameter is greater than 25 μm, after being separated, oil-containing 0.03 ~ 0.6% continuing flow to the right side of dividing plate by being discharged by oil water interface device in sewage, isolated oil content mixes on dividing plate top with the oil content after the dehydration on the left of aforementioned barriers, then under the effect of fluid level controller, controls outer row;
The length of described CPI fast dewatering module is 0.1 ~ 0.25 times of tripping device diameter of the housing, and the length of described CPI quick deoiling module is 0.05 ~ 0.15 times of tripping device diameter of the housing;
Light oil and the low point of gas hybrid mode of step 1 are adverse current or following current, arrange conventional gas-liquid mixing tank after Injection Section.
The mixed solution flow velocity of the T-shaped liquid-gas separator entrance described in step 2 is 3 ~ 6m/s.
The bag of water described in step 2 is between described wetting ability coarse module and CPI fast dewatering module, and described CPI quick deoiling module and described lipophilicity coarse model calling are arranged.
Wetting ability coarse module described in step 2, CPI fast dewatering module and described CPI quick deoiling module adopt the Teflon of modification, polypropylene or stainless material.
Beneficial effect of the present invention is:
(1) line-blending method is adopted, wet oil is utilized to carry out washing, purifying to gas containing hydrocarbon and hydrocarbon component in gas recovery, secondly T-shaped liquid gas isolation technique is adopted, realize liquid degassing fast to the gas after washing by the centrifugal force of T-shaped pipe liquid in rotation, the simple and separation efficiency of structure is higher than gravity settling separation; On the other hand, when the T-shaped tube inlet flow velocity of control is 3 ~ 6m/s, gas-liquid two-phase under the influence of centrifugal force, due to the effect liquid phase of density difference at radial section to external migration, gas phase is to Center shift, have the effect of secondary washing, in conjunction with mixing and the cleaning function being separated two processes, washing effect is good;
(2) according to the characteristic of Fischer-Tropsch synthesis process, wet oil and oil-containing water are arranged on an equipment and are separated, reduce by an equipment, required supporting pipe arrangement, control, valve and occupation of land all reduce, and play the effect reducing investment.
(3) as shown in Figure 1; according to F-T synthesis profit characteristic; by CPI, that coarse technology has carried out combination is integrated; first adopt the oleophylic of profit coarse module or hydrophilic nmature that disperse phase oil droplet, water droplet are carried out coalescent growing up, adopt the shallow pool principle in quick flow process between CPI waved plate afterwards, realize the sharp separation of water-oil phase; disengaging time is short; and separation efficiency improves, equipment takes up an area reduction, and next process intractability reduces.
The feature that the method that the present invention adopts has simply, efficient and adaptability is wide, functionally meet the preliminary requirement of the oily water separation of current F-T synthesis, and be integrated with the function of hydrocarbon component in washing and recycling gas, also can be applicable to the oily water separation of Coal Chemical Industry homogeneous processes.
Accompanying drawing explanation
Fig. 1 is CPI quick deoiling or the signal of dehydration (bottom perforate) principle;
Fig. 2 is the apparatus structure schematic diagram of embodiment 1.
Nomenclature
1 containing hydrocarbon gas entrance; 2 wet oil entrances; 3 gas-liquid mixed unit; 4 T-shaped liquid-gas separators;
5 rectification spargers; 6 wetting ability coarse modules; 7 CPI fast dewatering modules;
8 gas liquid removers; 9 gaseous phase outlets; 10 CPI quick deoiling modules;
11 lipophilicity coarse modules; 12 oily(waste)water imports; 13 inlet distributors;
14-1,14-2 oil water interface controller; 15 aqueous phase outlets; 16 dividing plates;
17 oil phase outlets; 18 aqueous phase outlets; 19 fluid level controllers; 20 shells.
Embodiment
By the following examples method of the present invention and device thereof are specifically described, but embodiment is only for the present invention is further described, does not limit the scope of the invention.
Comparative example 1
Certain coal plant's F-T synthesis device light oil flow after high-pressure separator is 50t/h, oily(waste)water flow 7t/h, wherein light Water in oil about 3 ~ 4%, oil-containing about 2 ~ 3% in oily(waste)water, produce the rich hydrocarbon gas and be about 4t/h, current employing following methods carries out oily water separation: the moisture light oil of about 3 ~ 4% that high-pressure separator is separated enters preliminary water-and-oil separator and carries out deposition dehydrating, this Process Design settling time is 0.5 hour, reach moisture about 0.5 ~ 1.5% feeding water knockout after sedimentation to dewater for a long time, oil product storage tank is delivered to after reaching moisture about less than 0.1% after this process dewatering time is not less than 8 hours, and isolated oil-containing synthetic water enters sewage surge tank bottom high-pressure separator 1, the water gone out with preliminary water-and-oil separator sedimentation carries out mixing at sewage surge tank and cushions, long-time sedimentation oil removing is carried out afterwards by being pumped into oil separation tank, this process oil removal time is more than 24 hours, sewage work is delivered to after sewage with oil about about 0.05 after oil removal, and the sump oil of oil separation tank recovered overhead is sent to underground slop oil tank and reclaims, reuse after process.Because water knockout, oil separation tank floor space are large, therefore these two equipment are put into outside core production equipment and carry out, and middlely adopt pump by pipeline by oil, water conveying past.
In this flow process, profit initial gross separation equipment adopts the method for gravity settling separation, separation efficiency is low and occupation area of equipment is large, design sedimentation can not be fallen more than 30 microns points of three-phase water droplets for 0.5 hour and is fully separated, W/O content often exceeds 10000ppm, and the aqueous phase surge tank also arranged in flow process does not play the effect of water oil removing, oil-in-water content reaches 5000 ~ 20000ppm, and in running at present, existing problems, need be optimized transformation.
Transformation general requirement: outlet Water in oil amount is less than 2000ppm, and in water, oleaginousness is less than 1000ppm, reduces current operation energy consumption, optimizes follow-up new device process flow.
Embodiment 1
In view of the problem of comparative example 1, the present embodiment improves its method and device.After improving, processing condition are as follows:
(1) processing parameter: oily dehydration on the left of dividing plate, oil dewaters according to flow rate of liquid 0.02m/s, average level height 50%, residence time 180s, and water bag stops design in 0.5 hour according to isolating sewage interval; Oily dehydration on the right side of dividing plate, oil dehydration is according to flow rate of liquid 0.025m/s, and average level height 40%, residence time 120s designs.
(2) inner member form: the length of tubular liquid-gas mixing tank is 2.2 times of pipe diameter, and entrance adopts T-shaped liquid-gas separator, and entrance flow rate control is 4.2m/s, meets gas quick wash and the requirement of mixed solution gas sharp separation; Left side water droplet coarse module 6 adopts 316L stainless steel traverse baffle to carry out water droplet coarse, length is 0.15 times of housing diameter, CPI fast dewatering module 7 adopts MODIFIED PP waved plate, distance between plates controls as 10mm, recess percentage of open area is 3%, length is 0.2 times of housing diameter, meets the rapid subsidence after water droplets coalescence; Right side oil droplet coarse module 11 adopts the traverse baffle of Teflon material to carry out water droplet coarse, length is 0.15 times of housing diameter, CPI quick deoiling module 10 adopts MODIFIED PP waved plate, distance between plates controls as 15mm, convex place percentage of open area is 53%, length is 0.2 times of housing diameter, meets the floating upward quickly after oil droplet coalescence;
(3) drainage controls: draining adopts oil water interface controller to control outer row, and oil extraction adopts liquid-level controller to control outer row.
Specific implementation process as shown in Figure 2, first the moisture light oil of about 3 ~ 4% that high-pressure separator is separated carry out following current washing by wet oil entrance 2 and the rich hydrocarbon gas of coming in containing hydrocarbon gas entrance 1 by tubular type gas-liquid mixed unit 3, the length of gas-liquid mixed unit 3 is 2.2 times of inlet tube diameter, the T-shaped liquid-gas separator 4 entering preliminary water-and-oil separator left hand inlet port place after washing again carries out the separation of liquid gas, and completing the de-hydrocarbon process of 2 washings, purified gas takes off after liquid through gas liquid remover 8 discharges from gaseous phase outlet 9; The water droplet carried secretly in oil is carried out coalescent growing up through wetting ability coarse module 6 by moisture light oil after rectification sparger 5 rectification, the coarse that this process completes more than 30 μm free-waters is grown up, the liquid phase flow speed controlling this process is not more than 0.02m/s, enter CPI fast dewatering module 7 afterwards and carry out fast dewatering, deviate from water and enter Shui Bao, on the left of oil flow to dividing plate 16, W/O content is less than 2000ppm; The waste water of oil-containing about 2 ~ 3% enters from the right side of initial gross separation device, first after the distribution effect of inlet distributor 13, the right side of dividing plate 16 after carrying out quick deoiling, is flow to successively by lipophilicity coarse module 11, CPI quick deoiling module 10, form oil water interface, oil-in-water content is less than 1000ppm; Rear bulkhead 16 on the left of draining control outer row by the oil water interface controller 14-2 being arranged on water and wrapping, on the right side of dividing plate 16, draining controls outer row by the oil water interface controller 14-1 be arranged on the right side of dividing plate 16, and oil extraction then controls outer row by the fluid level controller 19 be arranged on the left of dividing plate 16.
Implementation result: after adopting the method for this embodiment to transform, the sewage surge tank of comparative example 1 is cancelled, the volume of preliminary water-and-oil separator only has original 1/4 size, separating effect is reduced to 2000ppm by previous Water in oil 10000ppm, oil-in-water content is reduced to 1000ppm by 5000 previous ~ 20000ppm, meet the requirement of successive depths fine separation, equipment takes up an area reduction, serves certain economic benefit.
Be only the preferred embodiment of invention in sum, be not used for limiting practical range of the present invention.Namely all equivalences done according to the content of the present patent application the scope of the claims change and modify, and all should be technology category of the present invention.
Claims (4)
1. the profit initial gross separation device of oil gas washing that is coupled, it is characterized in that, described initial gross separation device comprise housing, inlet pipe, the wet oil entrance be successively set on described inlet pipe, gas containing hydrocarbon entrance, be built in described inlet pipe tubular type gas-liquid mixed unit and to be embedded on described inlet pipe and to be in the T-shaped liquid-gas separator of described enclosure interior, the right of described T-shaped liquid-gas separator is disposed with rectification sparger, wetting ability coarse module, CPI fast dewatering module and dividing plate;
The right of described dividing plate is disposed with CPI quick deoiling module, lipophilicity coarse module;
The right part of described housing is provided with oily(waste)water import, and is connected with described oily(waste)water import and is in the inlet distributor of described enclosure interior;
Described housing is provided with gas liquid remover near top place, and described case top is provided with gaseous phase outlet.
2. initial gross separation device according to claim 1; it is characterized in that; be provided with water bag between described wetting ability coarse module and CPI fast dewatering module, described water bag is in the bottom of described housing, and described water wrap be provided with oil water interface controller, bottom be provided with aqueous phase outlet.
3. initial gross separation device according to claim 1, it is characterized in that, the right and left near described dividing plate is respectively equipped with fluid level controller and oil water interface controller, the housing bottom relative with described fluid level controller has oil phase and exports, and the housing bottom relative with described oil water interface controller has aqueous phase and export.
4., according to the arbitrary described device of claims 1 to 3, it is characterized in that, described housing is horizontal or vertical.
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| CN201520090990.2U CN204455007U (en) | 2015-02-09 | 2015-02-09 | A kind of profit initial gross separation device of the oil gas washing that is coupled |
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| CN201520090990.2U CN204455007U (en) | 2015-02-09 | 2015-02-09 | A kind of profit initial gross separation device of the oil gas washing that is coupled |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609793A (en) * | 2018-06-29 | 2018-10-02 | 上海米素环保科技有限公司 | A kind of acidity water degasification deoiling method and its device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609793A (en) * | 2018-06-29 | 2018-10-02 | 上海米素环保科技有限公司 | A kind of acidity water degasification deoiling method and its device |
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Granted publication date: 20150708 Termination date: 20190209 |