CN205368182U - System for triple effect evaporates rectification against current handles glycine mother liquor - Google Patents
System for triple effect evaporates rectification against current handles glycine mother liquor Download PDFInfo
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- CN205368182U CN205368182U CN201620033963.6U CN201620033963U CN205368182U CN 205368182 U CN205368182 U CN 205368182U CN 201620033963 U CN201620033963 U CN 201620033963U CN 205368182 U CN205368182 U CN 205368182U
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Abstract
The utility model discloses a system for triple effect evaporates rectification against current handles glycine mother liquor, include an effect rectifying column, an effect reboiler, an effect feed preheater, two effect rectifying columns, the one or two effect reboiler, the two or two effect reboiler, two effect feed preheater, triple -effect evaporator, glycine mother liquor feeding tank field is connected with the bottom of an effect rectifying column after running through an effect feed preheater through the pipeline, a bottom of imitating the rectifying column is passed through the pipeline and is connected with a bottom of imitating tower cauldron discharging pump, an effect reboiler respectively, a top of imitating the reboiler is passed through the pipeline and is connected with a bottom steam inlet of imitating the rectifying column, passing through to divide two the tunnel after the pipeline is connected with cooling system in a top of imitating the rectifying column, is connected with tail gas recovery system after being connected with negative pressure system all the way again, and another sweetgum fruit is crossed the pipeline and is connected with the return -flow system, the utility model discloses a system can obtain the methyl alcohol and the ammonium chloride of high -purity simultaneously, and simple process, energy consumption are low, and the institute consumes steam and is traditional recovering process's about 68%.
Description
Technical field
This utility model relates to the system of a kind of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid.
Background technology
After traditional glycine production technology adopts methanol extraction glycine, containing substantial amounts of methanol, ammonium chloride and water in mother solution, methanol reuses after adopting distillation extraction, and remaining aqueous ammonium chloride solution generally adopts multiple-effect evaporation concentration and crystallization process.Save energy and reduce the cost but while conventional processes have employed multiple-effect evaporation concentration technology, but methanol distillation extraction process also consumes substantial amounts of steam, cause the increase of the overall process energy consumption of glycin mother liquid.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that the system of a kind of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid.
The technical solution of the utility model is summarized as follows:
A kind of system of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid, imitating reboiler 27, effect feed preheater 28, two effect rectifying column the 21, the 1st effect reboiler 24 the two or two effect reboiler 25, two including an effect rectifying column 22, and imitate feed preheater 26, triple effect evaporator 23, glycin mother liquid charging tank field F3 is connected with bottom or the middle part of an effect rectifying column 22 after running through an effect feed preheater 28 by pipeline；The bottom of one effect rectifying column 22 is imitated the bottom of tower reactor discharging pump 210, effect reboiler 27 respectively and is connected by pipeline with one；The top of one effect reboiler 27 is connected by the bottom steam entrance of pipeline and an effect rectifying column 22；Two-way is divided after being connected with cooling system H3 by pipeline in the top of one effect rectifying column 22, and a road is connected with exhaust gas recovery system D3 after being connected with negative pressure system I3 again, and pipeline of separately leading up to is connected with return-flow system J3；The top of two effect rectifying columns 21 is connected with return-flow system J3 after running through an effect reboiler 27 by pipeline；The bottom of reboiler 24 is imitated respectively by pipeline in the bottom of two effect rectifying columns 21 with the one or two, the bottom and two of the two or two effect reboiler 25 is imitated tower reactor discharging pumps 29 and is connected；The bottom of two effect rectifying columns 21 connects respectively through the top of pipeline and the one or two effect reboiler 24 and the top of the two or two effect reboiler 25；The middle part of two effect rectifying columns 21 is imitated tower reactor discharging pump 210 with one after running through two effect feed preheaters 26 by pipeline and is connected；The top of triple effect evaporator is sequentially passed through after the one or two effect reboiler 24, two imitates feed preheater 26 by pipeline and is connected with condensed fluid tank field A3；The bottom of triple effect evaporator is connected with storage salt tank field C3 after salt system K3 is connected with going out by pipeline；Steam B3 is connected with condensed fluid tank field E3 after sequentially passing through triple effect evaporator 23 and an effect feed preheater 28 by pipeline；Steam L3 is connected with condensed fluid tank field E3 after sequentially passing through the two or two effect reboiler 25 and an effect feed preheater 28 by pipeline；Return-flow system J3 is imitated the top of rectifying column 22 and two effect rectifying columns 21 respectively and is connected by pipeline with one；Return-flow system is mainly made up of return tank, reflux pump and flow control system, and return-flow system J3 is connected with overhead product tank field G3 by pipeline.
The preferred thermosyphon reboiler of tower reactor reboiler, kettle type reboiler, falling-film reboiler or a through type reboiler；Preferably thermosyphon reboiler.
Negative pressure system is at least one in liquid-ring vacuum pump, ejector vacuum pump and Roots vaccum pump.
Return-flow system is mainly made up of return tank, reflux pump and flow control system.
Advantage of the present utility model:
The system of a kind of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid of the present utility model, highly purified methanol and ammonium chloride can not only be obtained simultaneously, and technique is simple, energy consumption is low, consumed steam is about the 68% of tradition recovery process, big greatly enterprise saves operating cost, is suitable for large-scale production.
Accompanying drawing explanation
Fig. 1 is the system schematic of a kind of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid.
Fig. 2 is the second connected mode schematic diagram of the system of a kind of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid.
Detailed description of the invention
Below in conjunction with accompanying drawing, form according to the glycin mother liquid of Ningxia insecticide factory, this utility model is further described.The description below is merely to enable those skilled in the art to be more fully understood that this utility model, but this utility model is not imposed any restrictions.
Embodiment 1
A kind of system (see Fig. 1) of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid, imitating reboiler 27, effect feed preheater 28, two effect rectifying column the 21, the 1st effect reboiler 24 the two or two effect reboiler 25, two including an effect rectifying column 22, and imitate feed preheater 26, triple effect evaporator 23, glycin mother liquid charging tank field F3 is connected with the bottom of an effect rectifying column 22 after running through an effect feed preheater 28 by pipeline；The bottom of one effect rectifying column 22 is imitated the bottom of tower reactor discharging pump 210, effect reboiler 27 respectively and is connected by pipeline with one；The top of one effect reboiler 27 is connected by the bottom steam entrance of pipeline and an effect rectifying column 22；Two-way is divided after being connected with cooling system H3 by pipeline in the top of one effect rectifying column 22, and a road is connected with exhaust gas recovery system D3 after being connected with negative pressure system I3 again, and pipeline of separately leading up to is connected with return-flow system J3；The top of two effect rectifying columns 21 is connected with return-flow system J3 after running through an effect reboiler 27 by pipeline；The bottom of reboiler 24 is imitated respectively by pipeline in the bottom of two effect rectifying columns 21 with the one or two, the bottom and two of the two or two effect reboiler 25 is imitated tower reactor discharging pumps 29 and is connected；The bottom of two effect rectifying columns 21 connects respectively through the top of pipeline and the one or two effect reboiler 24 and the top of the two or two effect reboiler 25；The middle part of two effect rectifying columns 21 is imitated tower reactor discharging pump 210 with one after running through two effect feed preheaters 26 by pipeline and is connected；The top of triple effect evaporator is sequentially passed through after the one or two effect reboiler 24, two imitates feed preheater 26 by pipeline and is connected with condensed fluid tank field A3；The bottom of triple effect evaporator is connected with storage salt tank field C3 after salt system K3 is connected with going out by pipeline；Steam B3 is connected with condensed fluid tank field E3 after sequentially passing through triple effect evaporator 23 and an effect feed preheater 28 by pipeline；Steam L3 is connected with condensed fluid tank field E3 after sequentially passing through the two or two effect reboiler 25 and an effect feed preheater 28 by pipeline；Return-flow system J3 is imitated the top of rectifying column 22 and two effect rectifying columns 21 respectively and is connected by pipeline with one；Return-flow system is mainly made up of return tank, reflux pump and flow control system, and return-flow system J3 is connected with overhead product tank field G3 by pipeline.
In the present embodiment, glycin mother liquid is that Ningxia insecticide factory provides, and its quality group becomes methanol: 70%, NH4Cl:5%, water: 25% and other microcomponents；
The operation pressure of one effect feed preheater is 100KPaA, and feeding temperature is increased to 61.1 DEG C by 35 DEG C, and the operation pressure of an effect rectifying column is 55KPaA, tower top temperature is 51.4 DEG C, Main Ingredients and Appearance is methanol, and bottom temperature is 59.4 DEG C, is mainly composed of methanol, water and ammonium chloride；The operation pressure of two effect feed preheaters is 150KPaA, and feeding temperature is increased to 77.2 DEG C by 59.4 DEG C, and two effect rectifying column operation pressure are 120KPaA, tower top temperature is 70.6 DEG C, being mainly composed of methanol, bottom temperature is 110.7 DEG C, is mainly composed of water and ammonium chloride；The operation pressure of triple effect evaporator is 210KPaA, operation temperature is 138.1 DEG C, the thermal source B3 of triple effect evaporator adopts the saturated steam heating of 500KpaA, reboiler is thermosyphon reboiler, and thermal source is respectively adopted the indirect steam of triple effect evaporator and with the saturated vapor of 210KPaA as thermal source；The tower reactor reboiler of one effect rectifying column is kettle type reboiler, and thermal source adopts the overhead vapours of two effect rectifying columns；Negative pressure system is water ring vacuum pump, and rate of air sucked in required is 100m3/ min, it is provided that absolute vacuum pressure be 20KPaA；Return-flow system is mainly made up of return tank, reflux pump and flow control system, and an effect rectifying column and two effect rectifying columns are respectively provided with return-flow system, the temperature of backflow respectively 51.4 DEG C and 70.6 DEG C；Evaporating salt system is Olso evaporation and crystallization system, and the salt of discharge is mainly composed of NH4Cl, water content < 10%.
The steam that the system of a kind of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid consumes is about the 68% of tradition recovery process.
Glycin mother liquid charging tank field F3 is connected (see Fig. 2) with a middle part imitating rectifying column 22 after running through an effect feed preheater 28 by pipeline, and miscellaneous equipment and connect same the present embodiment becomes another embodiment, and its effect is similar to the present embodiment.
Claims (5)
1. the system of a technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid, including an effect rectifying column (22), effect reboiler (27), effect feed preheater (28), two effects rectifying column (21), the one or two effect reboiler (24), the two or two effect reboiler (25), two effects feed preheater (26), triple effect evaporator (23), it is characterized in that glycin mother liquid charging tank field (F3) is run through an effect feed preheater (28) by pipeline and is connected with a bottom imitating rectifying column (22) or middle part afterwards；Tower reactor discharging pump (210) is imitated respectively by pipeline in the bottom of one effect rectifying column (22) with one, the bottom of effect reboiler (27) is connected；The top of one effect reboiler (27) is connected by the bottom steam entrance of pipeline and effect rectifying column (22)；Two-way is divided after being connected with cooling system (H3) by pipeline in the top of one effect rectifying column (22), one tunnel is connected with exhaust gas recovery system (D3) after being connected with negative pressure system (I3) again, and pipeline of separately leading up to is connected with return-flow system (J3)；The top of two effects rectifying column (21) is run through an effect reboiler (27) by pipeline and is connected with return-flow system (J3) afterwards；The bottom of reboiler (24) is imitated respectively by pipeline in the bottom of two effects rectifying column (21) with the one or two, the bottom and two of the two or two effect reboiler (25) is imitated tower reactor discharging pump (29) and is connected；The bottom of two effects rectifying column (21) connects respectively through the top of pipeline and the one or two effect reboiler (24) and the top of the two or two effect reboiler (25)；The middle part of two effects rectifying column (21) is run through two effect feed preheaters (26) by pipeline and is connected with effect tower reactor discharging pump (210) afterwards；The top of triple effect evaporator sequentially passes through the one or two effect reboiler (24) by pipeline, two effects feed preheater (26) are connected with condensed fluid tank field (A3) afterwards；The bottom of triple effect evaporator is connected with storage salt tank field (C3) after salt system (K3) is connected with going out by pipeline；Steam (B3) sequentially passes through triple effect evaporator (23) by pipeline and effect feed preheater (28) is connected with condensed fluid tank field (E3) afterwards；Steam (L3) sequentially passes through the two or two effect reboiler (25) by pipeline and effect feed preheater (28) is connected with condensed fluid tank field (E3) afterwards；Return-flow system (J3) is imitated the top of rectifying column (22) and two effects rectifying column (21) respectively and is connected by pipeline with one；Return-flow system (J3) is connected with overhead product tank field (G3) by pipeline.
2. the system of a kind of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid according to claim 1, it is characterised in that described reboiler is thermosyphon reboiler, kettle type reboiler, falling-film reboiler or a through type reboiler.
3. the system of a kind of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid according to claim 2, it is characterised in that described reboiler is thermosyphon reboiler.
4. the system of a kind of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid according to claim 1, it is characterised in that described negative pressure system is at least one in liquid-ring vacuum pump, ejector vacuum pump and Roots vaccum pump.
5. the system of a kind of technique in three-effect countercurrent evaporation rectification process glycine crystallization mother liquid according to claim 1, it is characterised in that described return-flow system is mainly made up of return tank, reflux pump and flow control system.
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| CN201620033963.6U CN205368182U (en) | 2016-01-14 | 2016-01-14 | System for triple effect evaporates rectification against current handles glycine mother liquor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830010A (en) * | 2017-03-27 | 2017-06-13 | 湖北兴发化工集团股份有限公司 | Methyl alcohol and ammonium chloride extraction equipment and extraction process in a kind of glycine production |
| CN108341447A (en) * | 2018-04-04 | 2018-07-31 | 烟台国邦化工机械科技有限公司 | A kind of waste liquid continuously takes off light desalination process and system |
-
2016
- 2016-01-14 CN CN201620033963.6U patent/CN205368182U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830010A (en) * | 2017-03-27 | 2017-06-13 | 湖北兴发化工集团股份有限公司 | Methyl alcohol and ammonium chloride extraction equipment and extraction process in a kind of glycine production |
| CN108341447A (en) * | 2018-04-04 | 2018-07-31 | 烟台国邦化工机械科技有限公司 | A kind of waste liquid continuously takes off light desalination process and system |
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