CN102161674A - Energy-saving method for washing and dedusting synthesis gas product of methyl monomer - Google Patents
Energy-saving method for washing and dedusting synthesis gas product of methyl monomer Download PDFInfo
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- CN102161674A CN102161674A CN2008102380781A CN200810238078A CN102161674A CN 102161674 A CN102161674 A CN 102161674A CN 2008102380781 A CN2008102380781 A CN 2008102380781A CN 200810238078 A CN200810238078 A CN 200810238078A CN 102161674 A CN102161674 A CN 102161674A
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- China
- Prior art keywords
- synthesis gas
- tower
- monomer
- dust collection
- phlegma
- Prior art date
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- 239000000178 monomer Substances 0.000 title claims abstract description 35
- 238000005406 washing Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 24
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 24
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 title claims abstract description 13
- 239000000428 dust Substances 0.000 claims abstract description 25
- 238000009835 boiling Methods 0.000 claims abstract description 4
- 238000005201 scrubbing Methods 0.000 claims description 17
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 11
- 238000009833 condensation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 241000282326 Felis catus Species 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229940050176 methyl chloride Drugs 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000005046 Chlorosilane Substances 0.000 abstract description 5
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract 1
- 150000001367 organochlorosilanes Chemical class 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 150000001282 organosilanes Chemical class 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- YGZSVWMBUCGDCV-UHFFFAOYSA-N chloro(methyl)silane Chemical compound C[SiH2]Cl YGZSVWMBUCGDCV-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 description 1
- QABCGOSYZHCPGN-UHFFFAOYSA-N chloro(dimethyl)silicon Chemical compound C[Si](C)Cl QABCGOSYZHCPGN-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical group C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The invention relates to an energy-saving novel method of a technology for washing and dedusting a synthesis gas product of a methyl monomer. The method comprises the following steps of: secondly condensing washing gas, reflowing by a condensed fluid of a condenser with a higher boiling point relatively, and reversely contacting with the dust-containing high-temperate organic chlorosilane synthesis gas to dedust and purify to obtain the qualified organic chlorosilane synthesis gas. Therefore, the method achieves the aim of energy saving.
Description
Technical field
The present invention relates to a kind of organosilane monomer synthesis gas product scrubbing dust collection technology.
Background technology
Methyl monomer is synthetic to be to be raw material with silica flour and methyl chloride, direct synthesizing methyl-chloro-silane under the effect of copper catalyst system, and the main purpose product is a dimethyldichlorosilane(DMCS).The methyl chlorosilane synthetic technology is the core technology that organosilane monomer is produced, its reaction mechanism complexity, and side reaction is many, and high diformazan selectivity and low raw material and energy consumption are organosilicon industry goals to fight for for many years.
In the relevant at home and abroad Patent document data, about to organosilane monomer synthesis gas product scrubbing dust collection method, a kind of using inorganic chlorosilane gas wet dedusting and the height separation method that boils is disclosed among the CN1438226A, this process using organochlorosilane liquid is washings, in washing tower, the dust in the gas is removed, liquid-solid impurity such as washings and silica flour from the overflow of tower still to revaporizer, gas returns washing tower, still liquid enters flasher, flash off gas lime set behind condenser and enter the height groove that boils, the oar liquid after the flash distillation enters the waste residue groove.Synthesis gas after the dedusting enters first-stage condenser and secondary condenser, and the lime set of first-stage condenser and secondary condenser all enters backflash, returns washing tower through a reflux pump part as phegma, and a part enters subsequent processing and carries out other component separation.This processing method shortcoming is that energy consumption is too big.
A kind of dry dust removing method by using inorganic chlorosilane gas and device thereof are disclosed among the CN200610113259, this processing method is at the deficiency of wet dedusting, provide a kind of technology simple method for dust removal, the organochlorosilane synthesis gas that will contain dust is by the porcelain filter udst separation, and the organochlorosilane synthesis gas that is purified enters next process.Though being arranged, superheated monochloro methane gas removes the dust that sticks in the porcelain filter micropore as purge gas, but practical application effect is unsatisfactory, the porcelain filter micropore is often blocked, causes a voltage rise height to influence the normal stable production run of monomer synthesizer even.
Summary of the invention
The object of the present invention is to provide the new energy-saving process of a kind of methyl monomer synthesis gas product scrubbing dust collection.
The term explanation
Scrubbing dust collection: be in washing tower, the relative higher phlegma with boiling point of high temperature organochlorosilane synthesis gas that contains dust reaches the udst separation purpose by reverse contact, and the organochlorosilane synthesis gas that is purified enters next process.
The present invention seeks to be achieved through the following technical solutions:
The power-economizing method of a kind of methyl monomer synthesis gas product scrubbing dust collection, step is as follows:
1) the overhead gas 80--90 after the scrubbing dust collection ℃ (about 82.2 ℃) enter scrubber overhead one cooler and scrubber overhead two coolers successively, scrubber overhead one cooler is done heat-eliminating medium with recirculated water and is carried out cooling condensation, and scrubber overhead two coolers are done heat-eliminating medium with 0 ℃ of refrigerating fulid and carried out cooling condensation.
2) phlegma of a cooler enters washing tower one phlegma return tank, and by the washing tower reflux pump, wherein a part is sent washing tower back to and refluxed, and all the other overflow to two phlegma return tanks of scrubber overhead two coolers.
3) noncondensable gas of a cooler enters two coolers, and the phlegma of two coolers enters washing tower two phlegma return tanks, delivers in the crude monomer tower by crude monomer tower fresh feed pump.The uncondensed gas that two condensers come out enters the methyl chloride compression system.
4) washing tower one condenser heat-eliminating medium still is a recirculated water, and a phlegma is as the scrubber overhead phegma, and redundance enters two condensate drums of two coolers.
5) phlegma that adopts cat head one cooler improves the scrubber overhead temperature as phegma, with generally adopt at present be after condensed in two stages liquid merges wherein a part compare as phegma, light constituent content reduces in the phegma, washing effect is remarkable.
6) the washing tower quantity of reflux can be reduced to 80% of original quantity of reflux, can save using heat and consuming cold of tower operation in a large number.
7) the washing tower cat head second condenser heat-eliminating medium, has improved lime set and has advanced next tower (crude monomer tower) feeding temperature with-15 ℃ of direct-cooled comparing in fluorine Lyons of employing with 0 ℃ of aqueous glycol solution, has saved the consumption cold and the crude monomer tower thermal losses of washing tower.
The new energy-saving process excellent results of a kind of methyl monomer synthesis gas product of the present invention scrubbing dust collection is:
1 reduces the energy expenditure that the monomer synthesizer is produced crude monomer greatly.
2 have created attainable condition for the direct recovery part methyl chloride of crude monomer cat head.
Embodiment
From the high temperature organochlorosilane synthesis gas of chlorosilane resultant current fluidized bed reactor, carry out rough dusting by one-level, secondary cyclone after, enter washing tower.In washing tower, the relative higher condensation reflux liquid with boiling point of high temperature organochlorosilane synthesis gas that contains dust is by reverse contact, and further dedusting reaches earning of dedusting purpose.
The qualified organochlorosilane synthesis gas that is purified from scrubber overhead enters first-stage condenser, 80-90 ℃ of overhead gas after the scrubbing dust collection (about 82.2 ℃) enter scrubber overhead one cooler successively, scrubber overhead one cooler is done heat-eliminating medium with recirculated water and is carried out cooling condensation, 35--45 ℃ of condensate temperature control.
The phlegma of one cooler enters washing tower one phlegma return tank, by the washing tower reflux pump, wherein a part is sent the washing tower washing that refluxes back to, and all the other overflow to two phlegma return tanks of scrubber overhead two coolers, deliver in the crude monomer tower by crude monomer tower fresh feed pump.
The noncondensable gas of one cooler enters scrubber overhead two condensers and continues the condensation cooling.
Scrubber overhead two coolers are done heat-eliminating medium with 0 ℃ of refrigerating fulid and are carried out the condensation cooling.3--8 ℃ of condensate temperature control.
The phlegma of two coolers enters washing tower two phlegma return tanks, delivers in the crude monomer tower by crude monomer tower fresh feed pump.
The uncondensed gas that two condensers come out enters the methyl chloride compression system.
Claims (6)
1. the new energy-saving process method of methyl monomer synthesis gas product scrubbing dust collection comprises the following steps:
1) the overhead gas 80--90 after the scrubbing dust collection ℃, enter scrubber overhead one cooler and scrubber overhead two coolers successively, scrubber overhead one cooler is done heat-eliminating medium with recirculated water and is carried out cooling condensation, and scrubber overhead two coolers are done heat-eliminating medium with 0 ℃ of refrigerating fulid and carried out cooling condensation.
2) phlegma of a cooler enters washing tower one phlegma return tank, and by the washing tower reflux pump, wherein a part is sent washing tower back to and refluxed, and all the other overflow to two phlegma return tanks of scrubber overhead two coolers.
3) noncondensable gas of a cooler enters two coolers, and the phlegma of two coolers enters washing tower two phlegma return tanks, delivers in the crude monomer tower by crude monomer tower fresh feed pump.The uncondensed gas that two condensers come out enters the methyl chloride compression system.
4) the washing tower first condenser heat-eliminating medium still is a recirculated water, and a phlegma is as the scrubber overhead phegma, and redundance enters two condensate drums of two coolers.
5) phlegma that adopts cat head one cooler improves the scrubber overhead temperature as phegma, with generally adopt at present be after condensed in two stages liquid merges wherein a part compare as phegma, light constituent content reduces in the phegma.
6) the washing tower quantity of reflux can be reduced to 80% of original quantity of reflux, can save using heat and consuming cold of tower operation in a large number.
7) the washing tower cat head second condenser heat-eliminating medium, has improved lime set and has advanced next tower (crude monomer tower) feeding temperature with-15 ℃ of direct-cooled comparing in fluorine Lyons of employing with 0 ℃ of aqueous glycol solution.
2. the new energy-saving process method of a kind of methyl monomer synthesis gas product as claimed in claim 1 scrubbing dust collection is characterized in that the height phegma scrubbing dust collection of boiling.
3. the new energy-saving process method of a kind of methyl monomer synthesis gas product as claimed in claim 1 scrubbing dust collection is characterized in that in the phegma that light constituent reduces, and the washing tower quantity of reflux is reduced to original 80%.
4. the new energy-saving process method of a kind of methyl monomer synthesis gas product as claimed in claim 1 scrubbing dust collection is characterized in that improving crude monomer tower feeding temperature.
5. the new energy-saving process method of the described a kind of methyl monomer synthesis gas product of claim 1 scrubbing dust collection is characterized in that having created attainable condition for the direct recovery part methyl chloride of crude monomer cat head.
6. as the new energy-saving process method of the described a kind of methyl monomer synthesis gas product of claim 1-5 scrubbing dust collection, it is characterized in that reducing greatly the energy expenditure that the monomer synthesizer is produced crude monomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102380781A CN102161674A (en) | 2008-12-08 | 2008-12-08 | Energy-saving method for washing and dedusting synthesis gas product of methyl monomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102380781A CN102161674A (en) | 2008-12-08 | 2008-12-08 | Energy-saving method for washing and dedusting synthesis gas product of methyl monomer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102161674A true CN102161674A (en) | 2011-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102380781A Pending CN102161674A (en) | 2008-12-08 | 2008-12-08 | Energy-saving method for washing and dedusting synthesis gas product of methyl monomer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102161674A (en) |
-
2008
- 2008-12-08 CN CN2008102380781A patent/CN102161674A/en active Pending
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Yu Shufang Document name: Notification of Passing Preliminary Examination of the Application for Invention |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20110824 |