CN101786941A - Method for separating high alkali sodium aluminate solution - methyl alcohol mixed liquor - Google Patents
Method for separating high alkali sodium aluminate solution - methyl alcohol mixed liquor Download PDFInfo
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- CN101786941A CN101786941A CN201010122191A CN201010122191A CN101786941A CN 101786941 A CN101786941 A CN 101786941A CN 201010122191 A CN201010122191 A CN 201010122191A CN 201010122191 A CN201010122191 A CN 201010122191A CN 101786941 A CN101786941 A CN 101786941A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a method for separating a high alkali sodium aluminate solution - methyl alcohol mixed liquor. In the method, the high alkali sodium aluminate solution - methyl alcohol mixed liquor is used as rectification raw liquor to be efficiently rectified in an efficient rectification tower, when the bottom temperature of the tower is controlled to be 60-150 DEG C, the top temperature of the tower is controlled to be 50-100 DEG C, and the reflux ratio R is 0.1-10 in the rectification process; and a liquid methyl alcohol product can be obtained from top of the rectification tower after rectification and high alkali sodium aluminate solution can be obtained from the kettle of the rectification tower with qualified methyl alcohol content for recycle. The invention effectively separates high alkali sodium aluminate solution and methyl alcohol from the high alkali sodium aluminate solution - methyl alcohol mixed liquor, thereby avoiding resource waste and helping environment protection. The invention has obvious economic and social benefits. The technical scheme of the invention can be widely used by enterprises engaging in aluminum oxide, aluminium hydroxide, alumina gel, zeolite, etc. which are relevant to sodium aluminate solution decomposition and enterprises in need of separation of alkali solution and methyl alcohol.
Description
One, technical field:
The present invention relates to a kind of decomposition method of sodium aluminate mixed solution, particularly relate to a kind of method of separating high alkali sodium aluminate solution-methyl alcohol mixed liquor.
Two, background technology:
Divide in enterprise's production of decorrelation, at aluminum oxide, aluminium hydroxide, hard mass, aluminium glue, zeolite etc. and sodium aluminate solution if the applied catalysis decomposition technique will produce a large amount of high alkali sodium aluminate solution-methyl alcohol mixed liquors.But still do not have the high alkali sodium aluminate solution in a kind of effective separation high alkali sodium aluminate solution-methyl alcohol mixed liquor and the method for methyl alcohol so far, thereby the catalytic decomposition technology of its sodium aluminate solution can not be used widely.
So far, data about Methanol Recovery in the relevant open source information also has much, for example: " a kind of method of cottonseed protein extracting process Methanol Recovery ", " Methanol Recovery ", " technology of recovery of acidic gases by methanol absorption body ", " a kind of vat powder new process of production of recycling the drier methanol washings ", " methanol synthetic discharged gas delayed recovery and utilize method ", " embrane method reclaim the methyl alcohol building-up process drop a hint in the system of hydrogen " etc., have in the related data from acidic solution and to reclaim methyl alcohol, reclaim methyl alcohol from gas phase, useful film reclaims methyl alcohol.But the bibliographical information that does not have the separation process technique related content of open and high alkali sodium aluminate solution-methyl alcohol does not more use the high efficiency packing rectifying tower to separate the associated viscera of high alkali sodium aluminate solution-methyl alcohol mixed liquor.
The present invention is in order to make a large amount of high alkali sodium aluminate solution-methyl alcohol mixed liquors that divide the enterprise of decorrelation to produce with sodium aluminate solution be utilized effectively (being that the present invention is used widely for the catalytic decomposition technology that can make sodium aluminate solution), through long term studies, successfully develop a kind of method of effective separation high alkali sodium aluminate solution-methyl alcohol mixed liquor.
Three, summary of the invention:
The technical problem to be solved in the present invention provides a kind of method of separating high alkali sodium aluminate solution-methyl alcohol mixed liquor.High alkali sodium aluminate solution in the high alkali sodium aluminate solution-methyl alcohol mixed liquor and methyl alcohol can be separated by technical solution of the present invention, its two kinds of materials can be accessed again utilize.Thereby the catalytic decomposition technology of sodium aluminate solution is used widely.
In order to address the above problem, the technical solution used in the present invention is:
The invention provides a kind of method of separating high alkali sodium aluminate solution-methyl alcohol mixed liquor, the detailed process of this method is as follows:
High alkali sodium aluminate solution-methyl alcohol mixed liquor is squeezed into header tank as rectifying stoste, send the top opening for feed of high-efficient spiral-screen column to from top by header tank, rectifying stoste flows into rectifying tower from the rectifier opening for feed, after the intensification of the high efficiency packing layer heat exchange in the rectifying tower, part light composition constantly vaporization partly goes upward to cat head with up lightweight, other parts flow into the tower still, light composition in the tower still solution by the rectifying tower bottom in rectifying tower after the high efficiency packing layer heat exchange cooling, the continuous condensation separation of entrained heavy ingredient comes downwards to the tower still with descending stoste, and light composition goes upward to cat head, the light composition that goes upward to cat head is discharged by cat head, enter condenser then, condensation becomes liquid methanol, salable product are collected as the methyl alcohol finished product, and unacceptable product then is back to from the rectifying tower top by condenser and continues rectifying in the rectifying tower; In detecting tower still solution, behind methanol quality percentage composition≤0.05%, at the bottom of tower, discharge collection in the rectifying, obtain the qualified high alkali sodium aluminate solution of methanol content, in order to utilizing again; The amount of solution is a tower still volumetrical 1/2～2/3 in the described rectifying Tata still, solution in high pressure steam heating tower's still of usefulness 〉=0.6MPa, and the control column bottom temperature is 60～150 ℃, and tower top temperature is 50～100 ℃, and reflux ratio R is 0.1～10.
According to the method for above-mentioned separation high alkali sodium aluminate solution-methyl alcohol mixed liquor, methanol content is 1.6～80% in the described high alkali sodium aluminate solution-methyl alcohol mixed liquor, Al
2O
3Be 10～200g/l, caustic alkali is 10～250g/l.
According to the method for above-mentioned separation high alkali sodium aluminate solution-methyl alcohol mixed liquor, described tower top temperature is 60～80 ℃, and reflux ratio R is 0.1～6; The methanol quality percentage concentration is 50～99.9% in the methyl alcohol finished product salable product of described collection.
Method according to above-mentioned separation high alkali sodium aluminate solution-methyl alcohol mixed liquor, be provided with the one-level preheater in the header tank bottom, rectifying stoste is that high alkali sodium aluminate solution-methyl alcohol mixed liquor is introduced into the preheating of one-level preheater by header tank, enter the top opening for feed of high-efficient spiral-screen column then, lower the temperature after being introduced into one-level preheater exchanging heat after up light composition is discharged by cat head in the rectifying, entering condenser condenses then becomes liquid state, collects as the methyl alcohol finished product; The heat energy of the moisture hot methanol steam of discharging from cat head in the rectifying is applied to the one-level preheater and heats, thereby makes heat energy obtain comprehensive utilization.
Method according to above-mentioned separation high alkali sodium aluminate solution-methyl alcohol mixed liquor, be provided with one-level preheater and secondary preheater in the header tank bottom, rectifying stoste is that high alkali sodium aluminate solution-methyl alcohol mixed liquor is introduced into the preheating of one-level preheater by header tank, enter the secondary preheater again and carry out preheating once more, enter the top opening for feed of high-efficient spiral-screen column then; Lower the temperature after being introduced into one-level preheater exchanging heat after up light composition is discharged by cat head in the rectifying, entering condenser condenses then becomes liquid state, collects as the methyl alcohol finished product; The heat energy of the moisture hot methanol steam of discharging from cat head in the rectifying is applied to the one-level preheater and heats, and tower still high pressure steam water of condensation is used for the secondary preheater and heats, and heat energy is farthest fully utilized.
According to the method for above-mentioned separation high alkali sodium aluminate solution-methyl alcohol mixed liquor, described rectifying tower opening for feed place 2 meters scope Nei Tanei temperature up and down is controlled to be 40～90 ℃.
According to the method for above-mentioned separation high alkali sodium aluminate solution-methyl alcohol mixed liquor, the high efficiency packing of being adorned in the described rectifying tower is the column stainless steel stereoscopic graticule that adopts stainless steel metal wire to make.
According to the method for above-mentioned separation high alkali sodium aluminate solution-methyl alcohol mixed liquor, the angle that the square section stainless steel metal wire of described column stainless steel stereoscopic graticule intersects is 10～90 °, and the distance between parallel stainless steel metal wire is 0.5～100mm; The angle that the profile stainless steel metal wire of described column stainless steel stereoscopic graticule intersects is 10～90 °, and the distance between parallel stainless steel metal wire is 0.5～100mm; Described cylinder outside also is the stainless steel metal silk screen.
According to the method for above-mentioned separation high alkali sodium aluminate solution-methyl alcohol mixed liquor, the height of the every joint filler of described rectifying tower cylinder is 3～100cm; Be provided with liquid re-distributor every 1～100 filler cylinder in the described rectifying tower tower body.
Positive beneficial effect of the present invention:
1, adopt technical solution of the present invention that the high alkali sodium aluminate solution in its high alkali sodium aluminate solution-methyl alcohol mixed liquor is effectively separated with methyl alcohol, obtain the qualified high alkali sodium aluminate solution of methanol content≤0.05% and concentration and be 50～99.9% methyl alcohol finished product, high alkali sodium aluminate solution and methyl alcohol in its mixed solution are utilized again, so both solved the separation problem of high alkali sodium aluminate solution and methyl alcohol, and can make the catalytic decomposition technology of sodium aluminate solution obtain industrialization promotion and application again.Therefore, the present invention has remarkable economic efficiency and social benefit.
2, in the technical solution of the present invention highly efficient distilling process, be provided with the one-level preheater, the heat energy of the moisture hot methanol steam of high-efficient spiral-screen column cat head discharge is effectively fully utilized in the header tank bottom.
3, in the technical solution of the present invention highly efficient distilling process, be provided with one-level preheater and secondary preheater in the header tank bottom; The heat energy of the moisture hot methanol steam of high-efficient spiral-screen column cat head discharge was effectively fully utilized, tower still high pressure steam water of condensation is effectively fully utilized.Employing contains the technological process of two-stage preheater, the heat of discharging in the tower is fully used, thereby makes the energy waste of rectifying drop to minimum.
4, the high efficiency packing that is adopted in the high-efficient spiral-screen column that the present invention adopts, it is the column stainless steel stereoscopic graticule that adopts stainless steel metal wire to make, formed each stereoscopic grid of each filler all forms a miniature rectifying tower in rectifying, because filling surface has good wettability, on stereoscopic grid, form membranous wall automatically, up gas and descending liquid carry out heat exchange each other very easily on each membranous wall, more light composition is entered in the up gas, more heavy ingredient enters in the descending liquid, thereby reaches the purpose that improves rectification efficiency.
5, technical solution of the present invention can be widely used in the relevant enterprise that aluminum oxide, aluminium hydroxide, hard mass, aluminium glue, zeolite etc. and sodium aluminate solution decompose, and other need carry out in alkali lye and the isolating enterprise of methyl alcohol.
Four, description of drawings:
Fig. 1 embodiment one separates the process flow sheet of high alkali sodium aluminate solution-methyl alcohol mixed liquor method
Fig. 2 embodiment four separates the process flow sheet of high alkali sodium aluminate solution-methyl alcohol mixed liquor method
Fig. 3 embodiment seven separates the process flow sheet of high alkali sodium aluminate solution-methyl alcohol mixed liquor method
Five, embodiment:
Following examples only in order to further specify the present invention, do not limit content of the present invention.
Embodiment one: a kind of method of separating high alkali sodium aluminate solution-methyl alcohol mixed liquor
A kind of method of separating high alkali sodium aluminate solution-methyl alcohol mixed liquor, the detailed process of this method following (referring to accompanying drawing 1):
High alkali sodium aluminate solution-methyl alcohol mixed liquor is squeezed into header tank as rectifying stoste (temperature of rectifying stoste is controlled at 0～150 ℃), open dispensing valve, rectifying stoste is sent to the top opening for feed of high-efficient spiral-screen column by header tank, rectifying stoste flows into rectifying tower from the rectifier opening for feed, progressively come downwards to the tower still, the amount of solution is a tower still volumetrical 1/2～2/3 in the tower still, the high pressure steam of 0.6MPa is delivered to the chuck of tower still bottom, solution in heating tower's still, the temperature (being column bottom temperature) of rectifying stoste is 80～100 ℃ in the control tower still, tower top temperature is 60～70 ℃, reflux ratio R is 4, in rectifying, light composition in the rectifying stoste (tower still solution and descending solution in rectifying tower) through high efficiency packing layer heat exchange intensification in the rectifying tower after, form the air-flow that makes progress along tower body, during through each layer tower body, highly efficient distilling tower packing place constantly carries out heat exchange and baffling in tower body, heavy ingredient contained in the light composition constantly is condensed, form liquid and flow down row, other light compositions continue to go upward to cat head, the light composition that goes upward to cat head after sufficient heat exchange is discharged by cat head, enter condenser, be condensed into liquid methanol, collect (content of methyl alcohol 〉=80% in the methyl alcohol finished product) as the methyl alcohol finished product, the liquid (being defective liquid) that does not meet actual needs passes through return line, gets back to from rectifier and continues rectifying in the tower; The heavy ingredient that gets off through heat exchange condensation repeatedly from cat head is after sufficient heat exchange, be advanced into the tower still under continuing, when solution in the tower still after testing behind methanol quality percentage composition≤0.05%, discharge at the bottom of the tower and collect, obtain the qualified high alkali sodium aluminate solution of methanol content; The water of condensation that tower still high pressure steam produces effluxes collection.
Illustrate: methanol content is 1.6～80% in the raw material high alkali sodium aluminate solution-methyl alcohol mixed liquor that adopts in the above-mentioned separation method, Al
2O
3Be 10～200g/l, caustic alkali is 10～250g/l; Described rectifying tower opening for feed place 2 meters scope Nei Tanei temperature up and down is controlled to be 50～90 ℃.
The filler of being adorned in the high-efficient spiral-screen column is the column stainless steel stereoscopic graticule that adopts stainless steel metal wire to make.The angle that the square section stainless steel metal wire of column stainless steel stereoscopic graticule intersects is 10～90 °, and the distance between parallel stainless steel metal wire is 0.5～100mm; The angle that the profile stainless steel metal wire of described column stainless steel stereoscopic graticule intersects is 10～90 °, and the distance between parallel stainless steel metal wire is 0.5～100mm; Described cylinder outside also is the stainless steel metal silk screen.
The height of the every joint filler of high-efficient spiral-screen column cylinder is 40～60cm; Be provided with liquid re-distributor every 10～20 filler cylinders in the described rectifying tower tower body.
Embodiment two: basic identical with embodiment one, difference is:
The temperature (column bottom temperature) of rectifying stoste is 80～100 ℃ in the control tower still, and tower top temperature is 70～75 ℃, and reflux ratio R is 3; Methanol content is 〉=70% in the gained methyl alcohol finished product.
Embodiment three: basic identical with embodiment one, difference is:
The temperature (column bottom temperature) of rectifying stoste is 80～100 ℃ in the control tower still, and tower top temperature is 75～85 ℃, and reflux ratio R is 2; Methanol content is 〉=50% in the gained methyl alcohol finished product.
Embodiment four: a kind of method of separating high alkali sodium aluminate solution-methyl alcohol mixed liquor is (referring to accompanying drawing 2) with embodiment one difference:
High alkali sodium aluminate solution-methyl alcohol mixed liquor is got in the header tank as rectifying stoste (temperature of rectifying stoste is controlled at 0～150 ℃), open dispensing valve and enter the preheating of one-level preheater, rectifying stoste enters the top opening for feed of high-efficient spiral-screen column by the one-level preheater, rectifying stoste flows into rectifying tower from the rectifier opening for feed, progressively come downwards to the tower still, the amount of solution is a tower still volumetrical 1/2～2/3 in the tower still, the high pressure steam of 0.8MPa is delivered to the chuck of tower still bottom, solution in heating tower's still, the temperature (column bottom temperature) of rectifying stoste is 100～120 ℃ in the control tower still, tower top temperature is 60～70 ℃, reflux ratio R is 5, in rectifying, light composition in the rectifying stoste (tower still solution and descending solution in rectifying tower) through high efficiency packing layer heat exchange intensification in the rectifying tower after, form the air-flow that makes progress along tower body, during through each layer tower body, highly efficient distilling tower packing place constantly carries out heat exchange and baffling in tower body, heavy ingredient contained in the light composition constantly is condensed, form liquid and flow down row, other light compositions continue to go upward to cat head, the light composition that goes upward to cat head after sufficient heat exchange is discharged by cat head, enter the cooling of one-level preheater, enter condenser then, be condensed into liquid methanol, collect (content of methyl alcohol 〉=90% in the methyl alcohol finished product) as the methyl alcohol finished product, the liquid (being defective liquid) that does not meet actual needs passes through return line, gets back to from rectifier and continues rectifying in the tower; The heavy ingredient that gets off through heat exchange condensation repeatedly from cat head is after sufficient heat exchange, be advanced into the tower still under continuing, when solution in the tower still after testing behind methanol quality percentage composition≤0.05%, discharge at the bottom of the tower and collect, obtain the qualified high alkali sodium aluminate solution of methanol content; The water of condensation that tower still high pressure steam produces effluxes collection; The heat energy of the moisture hot methanol steam of discharging from cat head in the rectifying is applied to the one-level preheater and heats, thereby its heat energy is effectively fully utilized.
Embodiment five: basic identical with embodiment four, difference is:
The temperature (column bottom temperature) of rectifying stoste is 100～120 ℃ in the control tower still, and tower top temperature is 70～80 ℃, and reflux ratio R is 3; Methanol content is 〉=70% in the gained methyl alcohol finished product.
Embodiment six: basic identical with embodiment four, difference is:
The temperature (column bottom temperature) of rectifying stoste is 100～120 ℃ in the control tower still, and tower top temperature is 75～85 ℃, and reflux ratio R is 1; Methanol content is 〉=50% in the gained methyl alcohol finished product.
Embodiment seven: a kind of method of separating high alkali sodium aluminate solution-methyl alcohol mixed liquor is (referring to accompanying drawing 3) with embodiment one difference:
High alkali sodium aluminate solution-methyl alcohol mixed liquor is got in the header tank as rectifying stoste (temperature of rectifying stoste is controlled at 0～150 ℃), open dispensing valve and enter the preheating of one-level preheater, enter the secondary preheater by the one-level preheater and carry out preheating once more, rectifying stoste enters the top opening for feed of high-efficient spiral-screen column by the secondary preheater, rectifying stoste flows into rectifying tower from the rectifier opening for feed, progressively come downwards to the tower still, the amount of solution is a tower still volumetrical 1/2～2/3 in the tower still, the high pressure steam of 0.6MPa is delivered to the chuck of tower still bottom, solution in heating tower's still, the temperature (column bottom temperature) of rectifying stoste is 120～150 ℃ in the control tower still, tower top temperature is 60～70 ℃, reflux ratio R is 5, in rectifying, light composition in the rectifying stoste (tower still solution and descending solution in rectifying tower) through high efficiency packing layer heat exchange intensification in the rectifying tower after, form the air-flow that makes progress along tower body, during through each layer tower body, highly efficient distilling tower packing place constantly carries out heat exchange and baffling in tower body, heavy ingredient contained in the light composition constantly is condensed, form liquid and flow down row, other light compositions continue to go upward to cat head, after sufficient heat exchange, discharge by cat head, enter the cooling of one-level preheater, enter condenser then, be condensed into liquid methanol, collect (content of methyl alcohol 〉=80% in the methyl alcohol finished product) as the methyl alcohol finished product, the liquid (being defective liquid) that does not meet actual needs passes through return line, gets back to from rectifier and continues rectifying in the tower; The heavy ingredient that gets off through heat exchange condensation repeatedly from cat head continues to be advanced into the tower still down after sufficient heat exchange, when solution in the tower still after testing behind methanol content≤0.05%, discharges collection at the bottom of tower, obtains the qualified high alkali sodium aluminate solution of methanol content; The water of condensation that tower still high pressure steam produces effluxes collection; The heat energy of the moisture hot methanol steam of discharging from cat head in the rectifying is applied to the one-level preheater and heats, and tower still high pressure steam water of condensation is used for the secondary preheater and heats, and makes heat energy obtain comprehensive utilization.
Embodiment eight: basic identical with embodiment seven, difference is:
The temperature (column bottom temperature) of rectifying stoste is 120～150 ℃ in the control tower still, and tower top temperature is 70～80 ℃, and reflux ratio R is 3; Methanol content is 〉=70% in the gained methyl alcohol finished product.
Embodiment nine: basic identical with embodiment seven, difference is:
The temperature (column bottom temperature) of rectifying stoste is 120～150 ℃ in the control tower still, and tower top temperature is 75～85 ℃, and reflux ratio R is 2; Methanol content is 〉=50% in the gained methyl alcohol finished product.
Claims (9)
1. method of separating high alkali sodium aluminate solution-methyl alcohol mixed liquor is characterized in that:
High alkali sodium aluminate solution-methyl alcohol mixed liquor is squeezed into header tank as rectifying stoste, send the top opening for feed of high-efficient spiral-screen column to from top by header tank, rectifying stoste flows into rectifying tower from the rectifier opening for feed, after the intensification of the high efficiency packing layer heat exchange in the rectifying tower, part light composition constantly vaporization partly goes upward to cat head with up lightweight, other parts flow into the tower still, light composition in the tower still solution by the rectifying tower bottom in rectifying tower after the high efficiency packing layer heat exchange cooling, the continuous condensation separation of entrained heavy ingredient comes downwards to the tower still with descending stoste, and light composition goes upward to cat head, the light composition that goes upward to cat head is discharged by cat head, enter condenser then, condensation becomes liquid methanol, salable product are collected as the methyl alcohol finished product, and unacceptable product then is back to from the rectifying tower top by condenser and continues rectifying in the rectifying tower; In detecting tower still solution, behind methanol quality percentage composition≤0.05%, at the bottom of tower, discharge collection in the rectifying, obtain the qualified high alkali sodium aluminate solution of methanol content, in order to utilizing again; The amount of solution is a tower still volumetrical 1/2～2/3 in the described rectifying Tata still, solution in high pressure steam heating tower's still of usefulness 〉=0.6MPa, and the control column bottom temperature is 60～150 ℃, and tower top temperature is 50～100 ℃, and reflux ratio R is 0.1～10.
2. the method for separation high alkali sodium aluminate solution-methyl alcohol mixed liquor according to claim 1 is characterized in that: methanol content is 1.6～80% in the described high alkali sodium aluminate solution-methyl alcohol mixed liquor, Al
2O
3Be 10～200g/1, caustic alkali is 10～250g/l.
3. the method for separation high alkali sodium aluminate solution-methyl alcohol mixed liquor according to claim 1 is characterized in that: described tower top temperature is 60～80 ℃, and reflux ratio R is 0.1～6; The methanol quality percentage concentration is 50～99.9% in the methyl alcohol finished product salable product of described collection.
4. the method for separation high alkali sodium aluminate solution-methyl alcohol mixed liquor according to claim 1, it is characterized in that: be provided with the one-level preheater in the header tank bottom, rectifying stoste is that high alkali sodium aluminate solution-methyl alcohol mixed liquor is introduced into the preheating of one-level preheater by header tank, enter the top opening for feed of high-efficient spiral-screen column then, lower the temperature after being introduced into one-level preheater exchanging heat after up light composition is discharged by cat head in the rectifying, entering condenser condenses then becomes liquid state, collects as the methyl alcohol finished product; The heat energy of the moisture hot methanol steam of discharging from cat head in the rectifying is applied to the one-level preheater and heats, thereby makes heat energy obtain comprehensive utilization.
5. the method for separation high alkali sodium aluminate solution-methyl alcohol mixed liquor according to claim 1, it is characterized in that: be provided with one-level preheater and secondary preheater in the header tank bottom, rectifying stoste is that high alkali sodium aluminate solution-methyl alcohol mixed liquor is introduced into the preheating of one-level preheater by header tank, enter the secondary preheater again and carry out preheating once more, enter the top opening for feed of high-efficient spiral-screen column then; Lower the temperature after being introduced into one-level preheater exchanging heat after up light composition is discharged by cat head in the rectifying, entering condenser condenses then becomes liquid state, collects as the methyl alcohol finished product; The heat energy of the moisture hot methanol steam of discharging from cat head in the rectifying is applied to the one-level preheater and heats, and tower still high pressure steam water of condensation is used for the secondary preheater and heats, and heat energy is farthest fully utilized.
6. the method for separation high alkali sodium aluminate solution-methyl alcohol mixed liquor according to claim 1 is characterized in that: described rectifying tower opening for feed place 2 meters scope Nei Tanei temperature up and down is controlled to be 40～90 ℃.
7. the method for separation high alkali sodium aluminate solution-methyl alcohol mixed liquor according to claim 1 is characterized in that: the high efficiency packing of being adorned in the described rectifying tower is the column stainless steel stereoscopic graticule that adopts stainless steel metal wire to make.
8. the method for separation high alkali sodium aluminate solution-methyl alcohol mixed liquor according to claim 7, it is characterized in that: the angle that the square section stainless steel metal wire of described column stainless steel stereoscopic graticule intersects is 10～90 °, and the distance between parallel stainless steel metal wire is 0.5～100mm; The angle that the profile stainless steel metal wire of described column stainless steel stereoscopic graticule intersects is 10～90 °, and the distance between parallel stainless steel metal wire is 0.5～100mm; Described cylinder outside also is the stainless steel metal silk screen.
9. the method for separation high alkali sodium aluminate solution-methyl alcohol mixed liquor according to claim 1 is characterized in that: the height of the every joint filler of described rectifying tower cylinder is 3～100cm; Be provided with liquid re-distributor every 1～100 filler cylinder in the described rectifying tower tower body.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760164A (en) * | 2005-10-27 | 2006-04-19 | 天津大学 | Energy saving equipment of double effect rectification for methanol, and method |
| CN101084176A (en) * | 2004-12-20 | 2007-12-05 | 德古萨有限责任公司 | Method for the recovery of methanol |
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2010
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101084176A (en) * | 2004-12-20 | 2007-12-05 | 德古萨有限责任公司 | Method for the recovery of methanol |
| CN1760164A (en) * | 2005-10-27 | 2006-04-19 | 天津大学 | Energy saving equipment of double effect rectification for methanol, and method |
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