CN203728741U - Device for recycling tail gas from tower top of dehydrating tower system during prenyl alcohol production - Google Patents
Device for recycling tail gas from tower top of dehydrating tower system during prenyl alcohol production Download PDFInfo
- Publication number
- CN203728741U CN203728741U CN201420062150.0U CN201420062150U CN203728741U CN 203728741 U CN203728741 U CN 203728741U CN 201420062150 U CN201420062150 U CN 201420062150U CN 203728741 U CN203728741 U CN 203728741U
- Authority
- CN
- China
- Prior art keywords
- gas
- tower
- condenser
- tail gas
- liquid separator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- ASUAYTHWZCLXAN-UHFFFAOYSA-N prenol Chemical compound CC(C)=CCO ASUAYTHWZCLXAN-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000004064 recycling Methods 0.000 title claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000007789 gas Substances 0.000 claims abstract description 34
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000007791 liquid phase Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 230000018044 dehydration Effects 0.000 claims description 29
- 238000006297 dehydration reaction Methods 0.000 claims description 29
- 239000012267 brine Substances 0.000 claims description 6
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 239000012071 phase Substances 0.000 claims description 3
- 238000004886 process control Methods 0.000 claims description 3
- 206010020852 Hypertonia Diseases 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- 239000011780 sodium chloride Substances 0.000 abstract 2
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 4
- 230000007115 recruitment Effects 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- MXVSJNLRVLKAOG-UHFFFAOYSA-N 1-chloro-3-methylbut-1-ene Chemical compound CC(C)C=CCl MXVSJNLRVLKAOG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- -1 isopentene ester Chemical class 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to a production device and in particular relates to a device for recycling tail gas from a tower top of a dehydrating tower system during prenyl alcohol production. The device is characterized in that the gas rich in isobutene from a tower top of a dehydrating tower used in the previous procedure during prenyl alcohol production enters an overhead condenser and is cooled with frozen saline water; a condensate reflux tank is arranged at the lower part of the condenser and is used for collecting condensate from the condenser; the non-condensable tail gas from the condenser enters a gas-liquid separator to further recycle isobutene; the middle section inside the gas-liquid separator is filled with fillers; the liquid-phase washing liquid at the upper part of the gas-liquid separator comes from feeds of a light component separation tower; the feeds are process materials; a tail gas condenser is arranged at the tower top of the dehydrating tower; frozen saline water is used for cooling in the tail gas condenser. The device has the beneficial effects that the emission of the tail gas from the tower top of the dehydrating tower system and the nitrogen replenishment are optimally controlled; moreover, isobutene in the tail gas is recycled, thus reducing the nitrogen consumption, reducing environmental pollution and turning waste into wealth.
Description
Technical field
The utility model relates to a kind of production equipment, more particularly, relates to a kind of organic chemicals prenol production equipment.
Background technology
Prenol is a kind of important organic fine chemical intermediates, in fields such as agricultural chemicals and synthetic perfumes, has been widely used.Along with the development of cement external additive industry, particularly carboxyl acid graft copolymer have become the study hotspot of each research institution of major company of the world, prenol product becomes the important source material of producing polycarboxylate water-reducer.In concrete production and construction, use this high-performance cement water reducer, can reduce more than 30% water consumption, strengthen concrete intensity more than 30%, simultaneously can corresponding minimizing cement consumption.
At the product of industrial synthetic prenol, main operational path has iso-butylene and formaldehyde reaction synthesis technique and Hydrolyzing Process of Chloroisopentene.Other preparation method also has the methods such as the hydrolysis of isopentene ester, isoprene hydration, isoamyl olefine aldehydr hydrogenation.
At present, prenol product only has a certain manufacturer production of company and the China of Germany, Japan at present.Engineering construction is being done everywhere by China, and concrete requirement is huge, and high-performance cement water reducer requirement is also huge.Along with prenol industrial expansion, the progress of technology, cuts down the consumption of raw materials, carries out energy-conservation exploitation, will become the emphasis of prenol research and development.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of prior art, and a kind of organic chemicals prenol production equipment is provided.
Dehydration tower system tower top tail gas recycling device in a kind of prenol production, it is characterized in that, the dehydration column overhead of the upper procedure in prenol is produced out be rich in isobutene gas, enter overhead condenser, cooling with chilled brine, the not solidifying tail gas of condenser consists of nitrogen, iso-butylene;
Condenser is provided with phlegma return tank, collects the lime set that condenser gets off;
The not solidifying tail gas of condenser enters gas-liquid separator, further reclaims iso-butylene; Filler is loaded in the inner stage casing of gas-liquid separator;
The liquid phase washings on gas-liquid separator top, draws from light component knockout tower charging, and charging is process stream, and in dehydration column overhead, portion is provided with tail gas condenser, cooling with chilled brine in tail gas condenser;
Gas-liquid separator top is provided with liquid phase shower, and shower bottom is provided with two rounds;
Gas-liquid separator bottom is provided with return tank, and gas-liquid separator bottom is provided with fluid-tight between return tank;
Gas-liquid separator bottom liquid phase isobutene logistic, is recovered in dehydration column overhead return tank; The gas phase on gas-liquid separator top, removes low low pressure flare separating tank, is discharged into flare system;
Dehydration column overhead is provided with return tank, and return tank is provided with liquid collecting bag, with isobutylene separation and water; Return tank is provided with nitrogen access tube, to be filled with nitrogen;
A upper operation dehydration column overhead in prenol is produced has pressure to divide process control system, is connected with nitrogen valve, vent valve in the utility model, can optimize the magnitude of recruitment of nitrogen and the loss that discharge brings; Dehydration column overhead pressure superelevation, exhaust valve opening, exhaust gas emission is to flare system; Hypotony, exhaust valve closure;
Dehydration column overhead hypotony, nitrogen valve is opened, and system fills into nitrogen; Hypertonia, exhaust valve closure.
By said process, can reduce the loss that dehydration column overhead discharge brings as far as possible, also can reduce a nitrogen content in the magnitude of recruitment of nitrogen and system.
The beneficial effects of the utility model are, dehydration tower system tower top exhaust emissions amount and supplementary nitrogen amount are optimized to control; And the iso-butylene in tail gas is reclaimed, reduce nitrogen consumption, reduce the pollution to environment.The iso-butylene reclaiming returns to process system, continues to purify and reclaims, and supplements prenol device iso-butylene raw material.Guarantee that prenol device dehydration tower system tower top is recycled containing iso-butylene tail gas, as the raw material of this device, turn waste into wealth, make it the energy and reclaimed.
Accompanying drawing explanation
Fig. 1 device schematic diagram of the present utility model.
In figure, there are condenser 1E-401, return tank 1V-401, phlegma return tank 1V-412, gas-liquid separator 1T-412, tail gas condenser 1E-413, nitrogen valve 1PV-4104A, vent valve 1PV-4104B.
Embodiment
Below in conjunction with accompanying drawing and specific examples, the utility model is made and being described in further detail.
The tower top tail gas recycling device of the dehydration tower system in 5000 tons of prenols of producing per year of take is example.
As shown in the figure, a upper operation dehydration tower 1T-401 top of tower in prenol is produced out be rich in isobutene gas, enter overhead condenser 1E-401, cooling with chilled brine, the not solidifying tail gas of condenser 1E-401 consists of nitrogen 50kg/h, iso-butylene 5kg/h, 23 ℃ of service temperatures, working pressure 0.2MPaG;
Condenser 1E-401 bottom is provided with phlegma return tank 1V-412, collects the lime set that condenser 1E-401 gets off;
The not solidifying tail gas of condenser 1E-401 enters gas-liquid separator 1T-412, further reclaims iso-butylene; Gas-liquid separator 1T-412 loads filler in inner stage casing;
The liquid phase washings on gas-liquid separator 1T-412 top, draws from light component knockout tower charging, and charging is process stream, at dehydration tower 1T-401 top of tower, is provided with tail gas condenser 1E-413, cooling with chilled brine in tail gas condenser 1E-413, is cooled to-10 ℃;
Gas-liquid separator 1T-412 top is provided with liquid phase shower, and shower bottom is provided with two rounds;
Gas-liquid separator 1T-412 bottom is provided with return tank 1V-401, and gas-liquid separator 1T-412 bottom is provided with fluid-tight between return tank 1V-401;
Gas-liquid separator 1T-412 bottom liquid phase isobutene logistic, is recovered in dehydration tower 1T-401 return tank of top of the tower 1V-401; The gas phase on gas-liquid separator 1T-412 top, removes low low pressure flare separating tank, is discharged into flare system;
Dehydration tower 1T-401 tower top is provided with return tank 1V-401, and return tank 1V-401 is provided with liquid collecting bag, with isobutylene separation and water; Return tank 1V-401 is provided with nitrogen access tube, to be filled with nitrogen;
A upper operation dehydration column overhead in prenol is produced has pressure to divide process control system PIC-4104, is connected with in the present invention nitrogen valve 1PV-4104A, vent valve 1PV-4104B, can optimize the magnitude of recruitment of nitrogen and the loss that discharge brings; Dehydration tower 1T-401 tower top pressure surpasses 0.6MPaG, and vent valve 1PV-4104B opens, and flow 8kg/h, is discharged into flare system; Pressure is lower than 0.59MPaG, and vent valve 1PV-4104B closes;
Dehydration tower 1T-401 tower top pressure is lower than 0.05MPaG, and nitrogen valve 1PV-4104A opens, flow 4kg/h, and system fills into nitrogen; Pressure is higher than 0.06MPaG, and vent valve 1PV-4104B closes.
By said process, can reduce the loss that dehydration tower 1T-401 tower top discharge brings as far as possible, also can reduce a nitrogen content in the magnitude of recruitment of nitrogen and system.
Claims (1)
- A prenol produce in dehydration tower system tower top tail gas recycling device, it is characterized in that, a upper operation dehydration tower (1T-401) tower top in prenol is produced out be rich in isobutene gas, enter overhead condenser (1E-401), cooling with chilled brine, the not solidifying tail gas of condenser (1E-401) consists of nitrogen, iso-butylene;Condenser (1E-401) bottom is provided with phlegma return tank (1V-412), collects the lime set that condenser (1E-401) gets off;The not solidifying tail gas of condenser (1E-401) enters gas-liquid separator (1T-412), further reclaims iso-butylene; Filler is loaded in the inner stage casing of gas-liquid separator (1T-412);The liquid phase washings on gas-liquid separator (1T-412) top, draw from light component knockout tower charging, charging is process stream, at dehydration tower (1T-401) top of tower, is provided with tail gas condenser (1E-413), cooling with chilled brine in tail gas condenser (1E-413); Gas-liquid separator (1T-412) top is provided with liquid phase shower, and shower bottom is provided with two rounds; Gas-liquid separator (1T-412) bottom is provided with return tank (1V-401), and gas-liquid separator (1T-412) bottom is provided with fluid-tight between return tank (1V-401); Gas-liquid separator (1T-412) bottom liquid phase isobutene logistic, is recovered in dehydration tower (1T-401) return tank of top of the tower (1V-401); The gas phase on gas-liquid separator (1T-412) top, removes low low pressure flare separating tank, is discharged into flare system;Dehydration tower (1T-401) tower top is provided with return tank (1V-401), and return tank (1V-401) is provided with liquid collecting bag, with isobutylene separation and water; Return tank (1V-401) is provided with nitrogen access tube, to be filled with nitrogen;A upper operation dehydration column overhead in prenol is produced has pressure to divide process control system (PIC-4104), in the utility model, be connected with nitrogen valve (1PV-4104A), vent valve (1PV-4104B), dehydration tower (1T-401) tower top pressure superelevation, vent valve (1PV-4104B) is opened, and exhaust gas emission is to flare system; Hypotony, vent valve (1PV-4104B) is closed;Dehydration tower (1T-401) tower top pressure is too low, and nitrogen valve (1PV-4104A) is opened, and system fills into nitrogen; Hypertonia, vent valve (1PV-4104B) is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420062150.0U CN203728741U (en) | 2014-01-29 | 2014-01-29 | Device for recycling tail gas from tower top of dehydrating tower system during prenyl alcohol production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420062150.0U CN203728741U (en) | 2014-01-29 | 2014-01-29 | Device for recycling tail gas from tower top of dehydrating tower system during prenyl alcohol production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203728741U true CN203728741U (en) | 2014-07-23 |
Family
ID=51198827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420062150.0U Expired - Lifetime CN203728741U (en) | 2014-01-29 | 2014-01-29 | Device for recycling tail gas from tower top of dehydrating tower system during prenyl alcohol production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203728741U (en) |
-
2014
- 2014-01-29 CN CN201420062150.0U patent/CN203728741U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200927 Address after: 132002 3-6 and 9-13 floors of Block A, Jihua Economic and Trade Center, Tongtan Road, Changyi District, Jilin Province Patentee after: PetroChina Jilin Chemical Engineering Co.,Ltd. Address before: 132001 Jilin District of Changyi province Tong Tan Road Jihua Trade Center building A Patentee before: JILIN DESIGNING INSTITUTE OF CNPC NORTHEAST REFINING & CHEMICAL ENGINEERING Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |