CN203866065U - Efficient coalescence separation equipment applied to alkylation device - Google Patents
Efficient coalescence separation equipment applied to alkylation device Download PDFInfo
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- CN203866065U CN203866065U CN201420017477.6U CN201420017477U CN203866065U CN 203866065 U CN203866065 U CN 203866065U CN 201420017477 U CN201420017477 U CN 201420017477U CN 203866065 U CN203866065 U CN 203866065U
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Abstract
The utility model belongs to the field of petrochemical engineering oil-water separation and discloses efficient coalescence separation equipment applied to an alkylation device. The equipment comprises a case and an in-case part, wherein a mixed liquid inlet part, a water (acid) phase outlet part and an oil phase outlet part are arranged on the case; a liquid distributor is arranged at the mixed liquid inlet part; an oil collection chamber is arranged at the oil phase outlet part, and an oil phase outlet is arranged on the oil collection chamber; a rectification evenly-distributing device, a coarse-graining coalescence section, a modified corrugated reinforcement separation section and a nano fiber deep separation section are arranged in the case in a mixed liquid flow direction respectively; and an interface indicator is arranged in the case. According to the equipment, a shallow pool principle and a coarse-graining technology are combined, so that the equipment has the very high oil-water (acid) separation efficiency. Compared with existing single packing oil-water separation equipment, the equipment has the obvious characteristics of high separation efficiency, high processing capacity, high operating flexibility, small occupied area, low one-time equipment investment and the like.
Description
Technical field
The utility model patent relates to a kind of petrochemical technology field, particularly the efficient coarse separation equipment of profit (oleic acid) in alkyl plant.
Background technology
For a long time, China's oil quality lags behind, and sulphur, aromatic hydrocarbons and olefin(e) centent are wherein high, thereby have increased the weight of the pollution level of automotive emission, becomes one of frequent pushing hands occurring of haze weather.Along with the continuous upgrading of increasingly stringent and the gasoline quality index of environmental regulation, domestic and international market continues to increase the demand of clean fuel.
Alkyl plant is to be raw material with Trimethylmethane in liquefied gas and low-molecular olefine (being generally C3～C5 alkene, is mainly n-butene at present), and under the effect of strong acid catalyst (sulfuric acid), reaction generates taking octane-iso as main alkylate oil.Alkylate oil has high-octane rating, low-steam pressure, low-sulfur, without alkene, without advantages such as benzene class aromatic hydrocarbons, not only can directly use as aviation spirit, and be that desirable stop bracket gasoline adds component.Taking liquefied gas as raw material, produce alkylate oil, be the clean energy technology of making rational use of resources, produce high value added product.
In alkylation production technique, the separation of profit (oleic acid) is very important unit process wherein, such as the separation of acid hydrocarbon emulsification liquid, alkali cleaning and the washing of extracting cryogen out, in the process such as pickling and washing of effluent, the quality of profit (oleic acid) separating effect, is directly connected to the cycle of operation of alkyl plant quality product, processing power, acid consumption and whole device.Therefore, the requirement in alkyl plant, profit (oleic acid) being separated is: oily water separation efficiency is high, facility compact, and investment and process cost are low.
Existing oily water separation technique mainly contains settling process, centrifugal separation, coalescent method, By Bubble-floating Method, flocculence etc., and the common equipment matching has swash plate oil eliminator, degreaser cyclone, oil and water separation bygranulation device, air flotation oil remover etc.
In current alkyl plant, profit (oleic acid) isolation technique generally adopting is settling methods and coarse separation method.Settling methods, utilizes the density difference of profit (oleic acid) exactly, and mixing liquid is in tun in mobile process, and the relative movement that relies on action of gravity to carry out two-phase forms heavy phase natural subsidence, and realizes the method that profit (oleic acid) separates.Feature is that device structure is simple, and operating procedure is simple, but floor space is large, equipment one-time investment is large, and oleic acid overstand, causes the side reactions such as olefinic polymerization to increase, not only the separation accuracy of profit (oleic acid) is poor, and has increased sour consumption and reduced quality product.Coarse separation method is to utilize the close and distant different in kind of coalescence material to oil phase or water, makes tiny drop at the poly-large drop of attached one-tenth of coalescence material, and under the impact force action of gravity and droplet flow, the drop that particle diameter increases departs from coalescence material surface and sinks.Compare with settling methods, coarse separation method has higher separation efficiency, floor space is also less, there is certain advantage, but in the face of containing the complicated mixed solution composition such as lighter hydrocarbons, water, alkali lye and sulfuric acid in alkylation production, single coalescence material and structure and specification cannot adapt to, and are also difficult to ensure good profit (oleic acid) separating effect.
Chinese utility model patent (CN101972559B) has provided another kind of oily-water seperating equipment and oil-water separation method, and this utility model patent contains three kinds of separation methods such as eddy flow, coalescent and air supporting, can be effectively by oily water separation.But this equipment is mainly used in the oily water separation of crude oil, the nonsensical parts such as cyclonic separation are increased for alkyl plant, increased volume and the one-time investment of equipment, and the design of import and export part does not meet the technical requirements of oily water separation in alkyl plant yet.
China's utility model (200920252001.X) has provided a kind of coalescence plate oil-water separator, is provided with housing and imports and exports coalescent part in part and housing, and be provided with scum dredger in exit portion, has reasonable oil-water separation.But this equipment is mainly used in the processing of oily(waste)water, in water, remove oil handling, this equipment is inapplicable in alkyl plant.
Therefore,, due to the problems referred to above that prior art exists, therefore not yet solve up to now in alkyl plant specially for the task equipment of profit (oleic acid) high efficiency separation, far can not meet the expectation of petrochemical complex manufacture.Therefore the treatment facility that this area separates in the urgent need to the low and effective high efficiency oil-water of cost of development.
Utility model content
The purpose of this utility model is to overcome the above-mentioned shortcoming of existing oily water separating equipment, provides that a kind of liquid distribution is even, coalescent pack is difficult for obstruction, deep removal small particle size oil droplet, the low and effective high efficiency oil-water separating device of cost.
The utility model is realized by following equipment design:
A kind of efficient coarse separation equipment that is applied to alkyl plant, the entry to mixed solution, the oil phase outlet that comprise housing, be arranged on housing export mutually with water (acid), it is characterized in that, described entry to mixed solution to oil phase outlet is disposed with liquid distributor, rectification uniform device, coarse coalescing section, modification ripple strengthening segregation section;
Described liquid distributor is perforated tube;
Described rectification uniform device is the uniform perforate slab of a porous;
Described coarse coalescing section is perforated plate corrugated and is formed by stacking;
Described modification ripple strengthening segregation section is the modification waved plate of stack.
Preferably, described liquid distributor perforate and entry to mixed solution direction are in opposite directions.
Preferably, the described material of perforated plate corrugated can be a kind of or combination of metal, macromolecular material or stupalith.
Preferably, the waved plate of described stack be angled placement, the parallel stack of spacing with 6-12mm.
Preferably, described waved plate has oil float hole or sedimentation hole at crest or wave trough position interval, and ripple direction is consistent with mixed solution flow direction.
Preferably, described waved plate is surface modification waved plate, and this surface modification is the surface modification treatment of surface through oleophilic drainage or hydrophilic oleophobic.
Preferably, described nanofiber degree of depth segregation section is that one or more in steel fiber, glass fibre, polytetrafluoroethylene fiber and polypropylene fibre are fibrous.
Preferably, before described oil phase outlet, be provided with a gathering room, described oil phase outlet is set on gathering room.
Preferably, after described modification ripple strengthening segregation section, be also provided with a nanofiber degree of depth segregation section, this nanofiber degree of depth segregation section is the nanofiber that braiding forms.
Preferably, described nanofiber is that one or more in steel fiber, glass fibre, polytetrafluoroethylene fiber and polypropylene fibre are fibrous.
Advantage and positively effect that the utility model patent has are: liquid distributor, gathering room are set on housing, rectification uniform device is set in housing, separated fluid is evenly distributed in separating device import and export and device interior, reduce the generation of short circuit phenomenon as far as possible, the less laminar flow regime that reaches of flow velocity, thereby ensure that device interior space makes full use of, improve separation efficiency.Shallow pool principle and coalescence technology are combined, increase the contact channels of fluid, and carry out the surface modification of coalescence material and adopt nano-scale fiber shuffling oily water separation material according to the different properties of fluid, compare existing traditional profit coarse separation equipment, there is very high oily water separation efficiency.
Particularly,
(1) equipment of the present utility model, has overcome oily-water seperating equipment inferior separating effect in existing alkyl plant, cannot effectively the water in oil or acid be separated, thereby cause the problem that alkylation acid consumption is too high, product is defective, treatment capacity is low.
(2) coalescer adopting in the utility model equipment; profit (acid) medium being in alkylation has carried out the specific aim design on device structure; the oleophilic drainage of shallow pool principle, coarse technology and nanofiber or hydrophilic oleophobic are combined, there is very high profit (acid) separation efficiency.
(3) material of the coalescer adopting in the utility model equipment, is all also to select for the feature of profit in alkyl plant (acid) medium, and has carried out surface modification treatment, can more efficiently and rapidly profit (acid) be separated.
Brief description of the drawings
Fig. 1 is a kind of efficient coarse separation equipment schematic diagram that is applied to alkyl plant of the utility model patent;
Fig. 2 is embodiment 1 schematic diagram of the utility model patent equipment.
Nomenclature:
The import of 1-mixed solution; 2-liquid distributor; 3-rectification uniform device; 4-coarse coalescing section; 5-modification ripple strengthening segregation section; 6-nanofiber degree of depth segregation section; 7-oil export; 8-interfacial meter; 9-water out
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
embodiment 1
In certain 200,000 tons/year of alkylation project of Shandong Province, use efficient coarse separation equipment of the present utility model, extraction cryogen-propane is wherein separated with water.
Its concrete operation and effect are described below:
1. the operational condition of propane dehydration equipment
Main component is: under volumetric flow rate, and 95% propane, 5% water; Treatment capacity is propane 1063kg/h, water 72kg/h, 52 DEG C of service temperatures, working pressure 1.75MPa.As shown in Figure 2, because oil phase content is far longer than water, belong to dewatering process in oil, so the gathering room of case top is changed to the water bag that is set to housing bottom, water is wrapped water outlet is set.
2. implementation process
The mixture of propane and water enters efficient coarse separation equipment of the present utility model, first passes through liquid distributor, has slowed down entry to mixed solution flow velocity, has increased the mobile distance of mixed solution; Through overcommutation uniform device, further make profit flow steadily again, eliminate turbulent flow.
The oil-water mixture of smooth flow enters coarse coalescing section, modification ripple strengthening segregation section and nanofiber degree of depth segregation section with this.Wherein, coarse coalescing section is selected the perforated plate corrugated material of 316L stainless steel, has greatly increased mass transfer contact area; Modification ripple strengthening segregation section has adopted the PP waved plate of surface modification, the PP material after modification, and the hydrophilic oleophobic performance of strongthener, has very high oily water separation efficiency; Finally, adopt nanofiber degree of depth segregation section, adopted glass nano-fibre and metal nano fiber shuffling to form, oil phase is exported can water entrainment.Ensure that like this propane enters pure with follow up device.
3. interpretation of result
By efficient coarse separation equipment of the present utility model, built-up type coarse separation method, the efficiency of dewatering in oil reaches more than 99.9%.Under operational condition, propane outlet water-content is no more than 50ppm, and water out propane content is no more than 200ppm.
All documents in the utility model topic note are all quoted as a reference in this application, are just quoted separately as a reference as each section of document.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read above-mentioned teachings of the present utility model, these equivalent form of values fall within the application's appended claims limited range equally.
embodiment 2
In the 160000 tons/year of technical octane projects in one, Zhejiang Province, acid settler has used efficient coarse separation equipment of the present utility model, oil phase-hydrocarbon mixture is wherein separated with the vitriol oil.
Its concrete operation and effect are described below:
1. the operational condition of acid settler
Table 1 acid settler design physical parameter
| Name of material | Hydrocarbon mixture, washing water | Unit |
| Oil phase flow | 77113 | kg/h |
| Oil phase density | 554 | kg/m |
| Acid phase flow rate | 256116 | kg/h |
| Acid phase density | 1840 | kg/m |
| Service temperature is the highest/normal/minimum | (requiring cold insulation) | ℃ |
| Working pressure is the highest/normal/minimum | 0.6 | MPa(G) |
2. implementation process
This embodiment can be with reference to accompanying drawing 2, and the mixture of hydrocarbon mixture and sulfuric acid enters efficient coarse separation equipment of the present utility model, first passes through liquid distributor, has slowed down entry to mixed solution flow velocity, has increased the mobile distance of mixed solution; Through overcommutation uniform device, further make profit flow steadily again, eliminate turbulent flow.
The oleic acid mixture of smooth flow enters coarse coalescing section, modification ripple strengthening segregation section and nanofiber degree of depth segregation section with this.Wherein, coarse coalescing section is selected 316L stainless steel and the perforated plate corrugated material of MODIFIED PP, has not only greatly increased mass transfer contact area, has also strengthened sulfuric-resisting corrosive nature; Modification ripple strengthening segregation section has adopted the PTFE waved plate of surface modification, because the PTFE waved plate of modification has very high oleic acid separation efficiency; Finally, adopt nanofiber degree of depth segregation section, adopted PTFE nanofiber and acid metal nanofiber shuffling to form, make oil phase outlet can not carry acid secretly.Ensure that like this hydrocarbon mixture enters pure with follow up device.
3. interpretation of result
By efficient coarse separation equipment of the present utility model, built-up type coarse separation method, in oil, the efficiency of depickling reaches more than 99.9%.Under operational condition, hydrocarbon mixture outlet free acid (not containing the acid in dissolving acid and emulsion) content is no more than 20ppm.
Be only the preferred embodiment of utility model in sum, be not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should be technology category of the present utility model.
All documents in the utility model topic note are all quoted as a reference in this application, are just quoted separately as a reference as each section of document.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read above-mentioned teachings of the present utility model, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (7)
1. one kind is applied to the efficient coarse separation equipment of alkyl plant, entry to mixed solution, oil phase outlet and the water outlet or the acid that comprise housing, be arranged on housing export mutually, it is characterized in that, described entry to mixed solution to oil phase outlet is disposed with liquid distributor, rectification uniform device, coarse coalescing section, modification ripple strengthening segregation section;
Described liquid distributor is perforated tube;
Described rectification uniform device is the uniform perforate slab of a porous;
Described coarse coalescing section is perforated plate corrugated and is formed by stacking;
Described modification ripple strengthening segregation section is the modification waved plate of stack.
2. efficient coarse separation equipment according to claim 1, is characterized in that, described liquid distributor perforate and entry to mixed solution direction are in opposite directions.
3. efficient coarse separation equipment according to claim 1, is characterized in that, the waved plate of described stack is angled placement, the parallel stack of spacing with 6-12mm.
4. efficient coarse separation equipment according to claim 5, is characterized in that, described waved plate has oil float hole or sedimentation hole at crest or wave trough position interval, and ripple direction is consistent with mixed solution flow direction.
5. efficient coarse separation equipment according to claim 1, is characterized in that, described waved plate is surface modification waved plate, and this surface modification is the surface modification treatment of surface through oleophilic drainage or hydrophilic oleophobic.
6. efficient coarse separation equipment according to claim 1, is characterized in that, before described oil phase outlet, is provided with a gathering room, and described oil phase outlet is set on gathering room.
7. efficient coarse separation equipment according to claim 1, is characterized in that, after described modification ripple strengthening segregation section, is also provided with a nanofiber degree of depth segregation section, and this nanofiber degree of depth segregation section is the nanofiber that braiding forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420017477.6U CN203866065U (en) | 2014-01-13 | 2014-01-13 | Efficient coalescence separation equipment applied to alkylation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420017477.6U CN203866065U (en) | 2014-01-13 | 2014-01-13 | Efficient coalescence separation equipment applied to alkylation device |
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| CN203866065U true CN203866065U (en) | 2014-10-08 |
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| CN201420017477.6U Expired - Fee Related CN203866065U (en) | 2014-01-13 | 2014-01-13 | Efficient coalescence separation equipment applied to alkylation device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909230A (en) * | 2016-05-30 | 2016-08-31 | 四川科华石油化工设备工程有限公司 | Three-phase separation testing device |
| CN107433052A (en) * | 2017-08-01 | 2017-12-05 | 湖北兴达石化设备有限公司 | A kind of salkali waste piece-rate system prepared in cyclohexanone technique |
| CN110079357A (en) * | 2019-04-12 | 2019-08-02 | 华东理工大学 | A kind of electric field-enhanced fibre module unit of abnormity and application |
-
2014
- 2014-01-13 CN CN201420017477.6U patent/CN203866065U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909230A (en) * | 2016-05-30 | 2016-08-31 | 四川科华石油化工设备工程有限公司 | Three-phase separation testing device |
| CN107433052A (en) * | 2017-08-01 | 2017-12-05 | 湖北兴达石化设备有限公司 | A kind of salkali waste piece-rate system prepared in cyclohexanone technique |
| CN110079357A (en) * | 2019-04-12 | 2019-08-02 | 华东理工大学 | A kind of electric field-enhanced fibre module unit of abnormity and application |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20190113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |