CN103373898A - Methanol synthesis process and methanol synthesis system - Google Patents
Methanol synthesis process and methanol synthesis system Download PDFInfo
- Publication number
- CN103373898A CN103373898A CN2012101194791A CN201210119479A CN103373898A CN 103373898 A CN103373898 A CN 103373898A CN 2012101194791 A CN2012101194791 A CN 2012101194791A CN 201210119479 A CN201210119479 A CN 201210119479A CN 103373898 A CN103373898 A CN 103373898A
- Authority
- CN
- China
- Prior art keywords
- methanol
- hydraulic turbine
- methyl alcohol
- water
- turbine machine
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a methanol synthesis process. The process comprises the following steps of: recycling the pressure energy of the methanol separated from a methanol high-pressure separator; and carrying out flash evaporation on the methanol, from which the pressure energy is recycled. The invention also provides a methanol synthesis system applied to any methanol synthesis process provided by the invention. The methanol synthesis system comprises the methanol high-pressure separator, a flash evaporation tank, and a hydraulic turbomachine, wherein the working medium inlet of the hydraulic turbomachine is communicated with the methanol outlet of the methanol high-pressure separator, and the working medium outlet of the hydraulic turbomachine is communicated with the inlet of the flash evaporation tank. By adopting the methanol synthesis system provided by the invention, the pressure energy contained in the methanol generated by the methanol high-pressure separator can be recycled so as to prevent unnecessary energy loss.
Description
Technical field
The system for methanol synthesis that the present invention relates to a kind of methanol synthesizing process and adopt this methanol synthesizing process.
Background technology
Methyl alcohol is a kind of important source material of chemical industry, also is a kind of staple product.In the methanol production, after the synthesis reactor gas cooling out, gas circulation is got back to reactor inlet, and the liquid crude methanol that contains the first alcohol and water then enters the tank field or enter rectifying separation to go out refined methanol.Synthesis reactor pressure is higher, can reach 8.0MPa, and irrigated area and Rectification column pressure are lower, are generally about 0.4MPa.Methanol production manufacturer directly makes the thick methyl alcohol of high pressure conditions directly enter irrigated area and the rectifying tower of low-pressure state by valve at present, and pressure energy loses fully.As this part pressure energy is reclaimed, can obtain good energy-saving effect.
Present methanol production factory does not all reclaim the pressure energy of thick methyl alcohol, and is referring to the system of the synthesizing methanol shown in Fig. 1, as follows to its process description.Reacted gas through First Heat Exchanger 3 and gas (comprising synthetic gas and the circulation gas) heat exchange that enters synthetic tower 1, again through water cooler 5 condensations, enters and isolates product coarse methyl alcohol in the methyl alcohol high-pressure separator 7.Most of gas at methyl alcohol high-pressure separator 7 tops returns (along arrow d) as recycle gas and continue to return synthetic tower 1 behind the supplementary pressure of recycle compressor ingress, a small amount of gas is through another workshop section's recovery part hydrogen, and hydrogen send the synthesic gas compressor import.The thick methyl alcohol that condensation is got off through filter 8, is delivered to methyl alcohol flash tank 9 through control valve again.After the flash distillation, thick methyl alcohol is sent the battery limit (BL) and is used for downstream process, and flash steam goes stove to act as a fuel along arrow g.
The defective of above-mentioned prior art is: from methyl alcohol high-pressure separator 7 thick methyl alcohol out, pressure reaches 8.0MPa, has very high pressure energy, and through behind the filter 8, again through control valve, pressure drops to 0.4MPa, and this part power loss is fallen.
Summary of the invention
For the problem that exists in the correlation technique, the system for methanol synthesis that the object of the present invention is to provide a kind of methanol synthesizing process and adopt this technique, with contained pressure energy in the methyl alcohol that reclaims the generation of methyl alcohol high-pressure separator, thereby avoid producing unnecessary power loss.
For achieving the above object, the invention provides a kind of methanol synthesizing process, comprising: the contained pressure energy of the isolated methyl alcohol of methyl alcohol high-pressure separator is reclaimed; Then, the methyl alcohol that carries out after pressure energy reclaims is carried out flash distillation.
Preferably, carry out pressure energy by the hydraulic turbine machine and reclaim, and the mechanical energy of hydraulic turbine machine output is flowed to generator or water pump or electric motor as motivating force.
Preferably, technique of the present invention also comprises: with the shaft seal end face of de-mineralized water cooling fluid power turbine, and will cool off de-mineralized water behind the shaft seal end face and the methyl alcohol after the flash distillation converges.
Preferably, when discharging in the turbine process of dissolved gases in the methyl alcohol at the hydraulic turbine machine, gas and the rear methyl alcohol from the output of hydraulic turbine machine of turbine processing that discharges is converged.
On the other hand, the present invention also provides a kind of system for methanol synthesis for the aforementioned arbitrary technique of the present invention, system for methanol synthesis comprises: methyl alcohol high-pressure separator, flash tank and hydraulic turbine machine, wherein, the working medium entrance of hydraulic turbine machine is communicated with the outlet of the methyl alcohol of methyl alcohol high-pressure separator, and the sender property outlet of hydraulic turbine machine is communicated with the entrance of flash tank.
Preferably, on the connecting pipeline between the working medium entrance of methyl alcohol outlet and hydraulic turbine machine, also be provided with strainer.
Preferably, the main shaft output terminal of hydraulic turbine machine is connected with the drive shaft of generator.
Preferably, system for methanol synthesis also comprises: for synthesizing methanol reacts the synthetic tower that reaction compartment is provided, have the air outlet of discharging for gas after the reaction; And to the device that the reacted gas of discharging from synthetic tower carries out condensation, be connected between the entrance of the air outlet of synthetic tower and methyl alcohol high-pressure separator.
Preferably, system for methanol synthesis also comprises the boiler water circulation system take synthetic tower as heat source accommodation device, the boiler water circulation system comprises: boiler and drive water in the boiler and absorbs synthesizing methanol react the one group of water pump that returns boiler after institute's release of heat from synthetic tower, wherein, this group water pump is made of at least two water pumps in parallel or that be cascaded, and the drive shaft of one of them water pump is connected with the main shaft output terminal of hydraulic turbine machine.
Preferably, synthetic tower also has: for medium inlet and the media outlet of the medium turnover that absorbs synthesizing methanol reaction institute release of heat; Boiler has recirculated water entrance and circulating water outlet, and this group water pump is formed by two water pumps that are connected in parallel; Wherein, the pump intake of these two water pumps is communicated with the circulating water outlet of boiler, and the pump discharge of these two water pumps is communicated with the medium inlet of synthetic tower, and the media outlet of synthetic tower is communicated with the recirculated water entrance of boiler.
Preferably, replace this group water pump with the drive unit that is formed by asynchronous machine and the first water pump, connect together by shaft coupling between the drive shaft of the output shaft of asynchronous machine and the first water pump, the input shaft of asynchronous machine connects together by the main shaft output terminal of clutch coupling and hydraulic turbine machine.
Preferably, replace this group water pump with the drive unit that is formed by asynchronous machine and the first water pump, one end of the drive shaft of the output shaft of asynchronous machine and the first water pump connects together by shaft coupling, and the other end of the drive shaft of the first water pump is connected with the main shaft output terminal of hydraulic turbine machine by clutch coupling.
Preferably, institute discharges the venting port of gas discharge in the hydraulic turbine machine is provided with for methyl alcohol turbine process, and venting port is communicated with by the sender property outlet of pipeline with the hydraulic turbine machine.
Useful technique effect of the present invention is:
(1) technique of the present invention is carried out first the pressure energy recovery to the isolated methyl alcohol of methyl alcohol high-pressure separator, then the methyl alcohol that carries out after pressure energy reclaims is carried out flash distillation.When adopting the hydraulic turbine machine to carry out the pressure energy recovery, for the Methanol Plant of 600,000 ton/years of cover scales, press efficiency of turbine 80% and calculate, recyclable power 200kW, when electricity price is 0.45 yuan/kWh, year about 800,000 Renminbi of benefit, when electricity price is 1 yuan/kWh, year about 1,700,000 Renminbi of benefit.Correspondingly, system of the present invention arranges the hydraulic turbine machine between methyl alcohol high-pressure separator and flasher, when adopting system of the present invention to carry out technique of the present invention, obtains the same process effect.
(2) technique of the present invention and system carry out above-mentioned pressure energy by the hydraulic turbine machine and reclaim, and the mechanical energy that the hydraulic turbine machine is converted to as motivating force driving water pump, motor or generator, thereby effectively utilize pressure energy.
(3) system of the present invention also organically is combined with boiler water circulation system (with synthetic tower as heat source accommodation device), the situation that has frequency-adjustable speed-adjustable for the boiler water circulation system, when cycle power device is at least two water pumps in the boiler water circulation system, the hydraulic turbine machine is connected with one of them water pump in the system of the present invention, and after the operation of hydraulic turbine machine, start this water pump, thereby discharge increases in the boiler water circulation system, at this moment speed control by frequency variation meeting automatically reduces the water pump of original operation (not being the water pump that is driven by hydraulic turbine machine output mechanical energy) flow, and saved electric energy by speed control by frequency variation; And when these water pumps are parallel connection, can not impact production.
(4) for the boiler water system that organically is connected in system of the present invention, when adopting the drive unit that is comprised of asynchronous machine and the first water pump as described cycle power device, the hydraulic turbine machine connects the first water pump by clutch coupling or drives the asynchronous machine of the first water pump.When the hydraulic turbine machine was not opened, clutch coupling was in off-state automatically, produced as usual running.After the hydraulic turbine machine is opened, the main shaft of hydraulic turbine machine rotates, when rotating speed is lower than the rotating speed of the first water pump or its motor, clutch coupling still is in off-state automatically, only have when the rotating speed of hydraulic turbine machine reaches the rotating speed of the first water pump or its motor, clutch coupling is auto-closing, and turbine drives the first water pump work done, the electric current of motor descends automatically, thereby reaches the purpose of economize on electricity.When the rotating speed of hydraulic turbine machine slows down, when being lower than the rotating speed of the first water pump or its motor, clutch coupling is automatic opening again.Because the function of clutch coupling auto-closing and automatic opening is arranged, the hydraulic turbine machine is on producing without any impact.
(5) technique of the present invention also comprises: when discharging in the turbine process of dissolved gases in the methyl alcohol at the hydraulic turbine machine, the gas that discharges converged from the methyl alcohol of hydraulic turbine machine output after turbine is processed flow into subsequent processing, thereby avoided: because dissolve with methanol has gas, air release out can have a strong impact on efficiency of turbine in the turbine process, and to the vibrative defective of turbine; Correspondingly, the present invention institute in the hydraulic turbine machine is provided with for methyl alcohol turbine process discharges the venting port of gas discharge, and this venting port is communicated with by the sender property outlet of pipeline with the hydraulic turbine machine, to obtain constructed effect.
(6) technique of the present invention also comprises: with the shaft seal end face of de-mineralized water cooling fluid power turbine, and will cool off de-mineralized water behind the shaft seal end face and the methyl alcohol after the flash distillation converges, thereby when the sealing that has prevented the hydraulic turbine machine goes wrong the problem that methyl alcohol (being toxic substance) leaks appears.
Description of drawings
Fig. 1 is the synoptic diagram of prior art system for methanol synthesis;
Fig. 2 is the synoptic diagram of the first embodiment of system for methanol synthesis of the present invention;
Fig. 3 is the synoptic diagram of the second embodiment of system for methanol synthesis of the present invention;
Fig. 4 is the synoptic diagram of the 3rd embodiment of system for methanol synthesis of the present invention;
Fig. 5 is the synoptic diagram of the 4th embodiment of system for methanol synthesis of the present invention;
Fig. 6 is the synoptic diagram of the hydraulic turbine machine after the improvement adopted of the present invention.
Drawing reference numeral:
1 synthetic tower, 27 generators
3 First Heat Exchangers, 33 entrances
5 water coolers, 31 venting ports
35 outlets of 7 methyl alcohol high-pressure separator
8 strainer arrow a represent the flow direction of water
9 methyl alcohol flash tank arrow b are the flow directions that become steam water interface after the water heat absorption
11 boiler arrow c are that synthetic gas and circulation gas flow to through First Heat Exchanger
13 second water pump arrow d represent the flow direction of recycle gas
15 the 3rd water pump arrow e represent the flow direction of low concentration methanol or water
17 hydraulic turbine machine arrow f represent the flow direction of thick methyl alcohol
19 equilibration tube arrow g represent the flow direction of flash steam
Flow direction when 21 asynchronous machine arrow h represent de-mineralized water cooling end face
23 clutch coupling arrow i represent that the backwater of de-mineralized water flows to
25 first water pump arrow j represent steam flow
Arrow k represents to boiler fills
Embodiment
Following Shenfu figure describes the specific embodiment of the invention.
The first embodiment referring to the system for methanol synthesis of the present invention shown in Fig. 2, methanol synthesizing process of the present invention is described, particularly: the reacted gas of synthesizing methanol in the synthetic tower 1, through First Heat Exchanger 3 and gas (comprise along arrow c and enter synthetic gas and circulation gas in the First Heat Exchanger 3) heat exchange that enters synthetic tower 1, through water cooler 5 condensations, enter and isolate product coarse methyl alcohol in the methyl alcohol high-pressure separator 7 again; Most of gas at methyl alcohol high-pressure separator 7 tops continues to return synthetic tower 1 as recycle gas after arrow d turns back to recycle compressor ingress supplementary pressure, a small amount of gas is through another workshop section's recovery part hydrogen, and hydrogen send the synthesic gas compressor import.The thick methyl alcohol that condensation is got off, through filter 8, feed liquor power turbine 17 is delivered to methyl alcohol flash tank 9 through control valve again; After the flash distillation, thick methyl alcohol is sent the battery limit (BL) along arrow f and is used for downstream process, and the flash steam of discharging along arrow g goes stove to act as a fuel.Above-mentioned synthetic gas is carbon monoxide and the hydrogen (containing other gases such as partial CO 2) that enters in the synthetic tower 1 in order to synthesizing methanol, and circulation gas is carbon monoxide and the hydrogen (containing other gases such as partial CO 2) of not participating in the synthesizing methanol reaction of discharging from methyl alcohol high-pressure separator 7 tops.
According to above description referring to Fig. 2, methanol synthesizing process of the present invention comprises: the contained pressure energy of methyl alcohol high-pressure separator 7 isolated methyl alcohol (for liquid, being called thick methyl alcohol) is reclaimed; Then the methyl alcohol that carries out after pressure energy reclaims is carried out flash distillation.Further, the present invention carries out pressure energy by 17 pairs of thick methyl alcohol of hydraulic turbine machine to reclaim the just this situation shown in Fig. 2.And to describe referring to Fig. 3-5 as following, the mechanical energy of hydraulic turbine machine 17 outputs can be flowed to generator 27 or the 3rd water pump 15 or electric motor (such as asynchronous machine 21) etc. as motivating force, convert institute's energy requirement to the pressure energy that will reclaim.In addition because methyl alcohol is toxic substance, in order to prevent that methyl alcohol from leaking, guaranteeing also can be perfectly safe when 17 sealings of hydraulic turbine machine go wrong, with the water coolant of de-mineralized water as the shaft seal end face of hydraulic turbine machine 17, the backwater behind the cooling shaft seal end face converges to enter subsequent processing along arrow i with the thick methyl alcohol of discharging from methyl alcohol flash tank 9.And between the high-pressure side of hydraulic turbine machine 17 and low pressure end, also add an equilibration tube 19.Again because dissolve with methanol has gas, air release out can have a strong impact on efficiency of turbine in the turbine process of hydraulic turbine machine 17, and to turbine generation vibration, so methanol synthesizing process of the present invention also comprises: when discharging in the turbine process of dissolved gases in the methyl alcohol at hydraulic turbine machine 17, the gas that discharges converged from the methyl alcohol of hydraulic turbine machine 17 outputs after turbine is processed flow into next process.Described de-mineralized water, be the salt in the water except clean water, first through after conventional the purification, filter by ion-exchange again, be thorough clean water.
On the other hand, the present invention also provides a kind of system for methanol synthesis, is used for the aforementioned arbitrary methanol synthesizing process of the present invention, and Fig. 2-5 shows the different embodiment of system for methanol synthesis of the present invention.
[the first embodiment of system for methanol synthesis]
Describe the first embodiment of system for methanol synthesis of the present invention referring to Fig. 2, it comprises: methyl alcohol high-pressure separator 7, methyl alcohol flash tank 9 and hydraulic turbine machine 17.Hydraulic turbine machine 17 has working medium entrance and sender property outlet, and the methyl alcohol of methyl alcohol high-pressure separator 7 separation place enters from the working medium entrance, finally discharges the mechanical energy output of the main shaft of hydraulic turbine machine 17 in order to converting to behind the turbine from sender property outlet.The working medium entrance of hydraulic turbine machine 17 is communicated with the outlet of the methyl alcohol of methyl alcohol high-pressure separator 7, and the sender property outlet of hydraulic turbine machine 17 is communicated with the entrance of methyl alcohol flash tank 9.Continuation is referring to Fig. 2, can also strainer 8 be set the connecting pipeline between the working medium entrance of the outlet of the methyl alcohol of methyl alcohol high-pressure separator 7 and hydraulic turbine machine 17, so that methyl alcohol high-pressure separator 7 isolated methyl alcohol are just entering hydraulic turbine machine 17 after through filtration.Also be illustrated among Fig. 2 and add an equilibration tube 19 between the high-pressure side of hydraulic turbine machine 17 and the low pressure end, the high-pressure side here obviously is exactly the working medium entrance, and low pressure end is exactly sender property outlet.
In Fig. 2, also show synthetic tower 1, medium inlet and media outlet that this synthetic tower 1 provides reaction compartment, synthetic tower 1 to have the air outlet of discharging for the reacted gas of synthesizing methanol and supplies to absorb the medium turnover of synthesizing methanol reaction institute release of heat for the synthesizing methanol reaction.Because the reacted gas of synthetic tower 1 synthesizing methanol out needs to enter in the methyl alcohol high-pressure separator 7 through after the condensation process again.Therefore for example shown in Figure 2, the device by First Heat Exchanger 3 and water cooler 5 form carries out condensation to the reacted gas of described synthesizing methanol; Particularly, first with the heat release in First Heat Exchanger 3 of the reacted gas of synthesizing methanol, and then in water cooler 5 heat release to realize described condensation process.Above-mentioned First Heat Exchanger 3 and water cooler 5 namely consist of the device that the reacted gas of synthesizing methanol that synthetic tower 1 is discharged carries out condensation, and it is connected between the entrance of the air outlet of synthetic tower 1 and methyl alcohol high-pressure separator 7.
[the second embodiment of system for methanol synthesis]
The second embodiment of system for methanol synthesis of the present invention is described referring to Fig. 3, in this embodiment, system for methanol synthesis also organically is combined with the boiler water circulation system, because the synthesizing methanol that occurs in the synthetic tower 1 reaction release of heat, so this boiler water circulation system is take synthetic tower 1 as heat source accommodation device.Shown in Fig. 3, the boiler water circulation system also comprises: boiler 11; The water that drives in the boiler 11 circulates between synthetic tower 1 and boiler 11, wherein returns boiler 11 when water absorbs synthesizing methanol reaction institute release of heat in synthetic tower 1 after; And the one group of water pump (being the water pump of two parallel connections among this embodiment: the second water pump 13 and the 3rd water pump 15) that is made of at least two water pumps in parallel or that be cascaded is to drive water cycle, wherein a water pump in this group water pump (for example the 3rd water pump 15) is driven by the mechanical energy of hydraulic turbine machine 17 outputs, namely is connected by shaft coupling with the main shaft output terminal of hydraulic turbine machine 17.As can be seen from Figure 3, the drive shaft of the main shaft of hydraulic turbine machine 17, the 3rd water pump 15 and the coupling shaft that couples together in order to the drive shaft with the main shaft of hydraulic turbine machine 17 and the 3rd water pump 15 are arranged coaxially to each other.
The annexation of boiler water circulation system is as follows among Fig. 3: these two water pumps 13 and 15 pump intake all are communicated with the circulating water outlet of boiler 11, the pump discharge of these two water pumps all is communicated with the medium inlet of synthetic tower 1, and the media outlet of synthetic tower 1 is communicated with the recirculated water entrance of boiler 11.Arrow j is the steam flow that boiler produces, and k represents to add water to boiler 11.
The motor of the second water pump 13 is with the frequency-adjustable speed-adjustable device, and after hydraulic turbine machine 17 drove 15 runnings of the 3rd water pump, the frequency-adjustable speed-adjustable device can reduce the rotating speed of the second water pump 13, reaches the effect of economize on electricity.
Except the boiler water circulation system, and utilize hydraulic turbine machine 17 to drive outside the pump in the boiler water circulation systems, the rest part of this embodiment is identical with the second embodiment.
[the 3rd embodiment of system for methanol synthesis]
Referring to Fig. 4, the drive unit when to be made of asynchronous machine 21 and the first water pump 25 when replacing one group of water pump among the second embodiment, namely consists of the 3rd embodiment.In the 3rd embodiment in two kinds of situation: connect together by shaft coupling between the output shaft of (1) asynchronous machine 21 and the drive shaft of the first water pump 25, the input shaft of asynchronous machine 21 connects together by the clutch coupling 23 main shaft output terminal with hydraulic turbine machine 17; Shown in Fig. 4 is exactly this situation.One end of the drive shaft of (2) first water pumps 25 connects together by the output shaft of shaft coupling and asynchronous machine 21, and the other end of the drive shaft of the first water pump 25 is connected with the main shaft output terminal of hydraulic turbine machine 17 by clutch coupling 23; Therefore this situation is the obvious modification of above-mentioned situation (1), for for simplicity no longer to illustrate.
For said circumstances (1) and (2), when hydraulic turbine machine 17 was not opened, clutch coupling 23 was in off-state automatically, produced as usual running.After hydraulic turbine machine 17 is opened, the main shaft of hydraulic turbine machine 17 rotates, when rotating speed is lower than the rotating speed of the first water pump 25 or its asynchronous machine 21, clutch coupling 23 still is in off-state automatically, only have when the rotating speed of hydraulic turbine machine 17 reaches the rotating speed of the first water pump 25 or its asynchronous machine 21, clutch coupling 23 is auto-closing, and hydraulic turbine machine 17 drives 25 works done of the first water pump, the electric current of asynchronous machine 21 descends automatically, thereby reaches the purpose of economize on electricity.When the rotating speed of hydraulic turbine machine 17 slows down, when being lower than the rotating speed of the first water pump 25 or its asynchronous machine 21, again automatic opening of clutch coupling 23.Because the function of clutch coupling 23 auto-closings and automatic opening is arranged, hydraulic turbine machine 17 on production without any impact.
[the 4th embodiment of system for methanol synthesis]
Referring to Fig. 5, be than the first embodiment difference, the main shaft output terminal of hydraulic turbine machine 17 is connected with the drive shaft of generator 27, to convert the contained pressure energy of methyl alcohol high-pressure separator 7 isolated methyl alcohol to electric energy.The rest part structure is identical with the first embodiment, repeats no more.
Because dissolve with methanol has gas, air release out has a strong impact on efficiency of turbine in the methyl alcohol turbine process, and to the vibrative defective of turbine, the gas that discharges need to be converged from the methyl alcohol of hydraulic turbine machine 17 outputs after turbine is processed and flow into subsequent processing.Therefore, the hydraulic turbine machine 17 of system for methanol synthesis of the present invention is provided with the venting port 31 that discharges the gas discharge for institute in the methyl alcohol turbine process as shown in Figure 6, and venting port 31 is between working medium entrance (high-pressure side) 33 and sender property outlet (low pressure end) 35.Venting port 31 is communicated with by the sender property outlet of pipeline with hydraulic turbine machine 17, can be connected by valve between pipeline and the venting port 31.Obviously, this also is applicable to 4 embodiment of above-mentioned system for methanol synthesis.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a methanol synthesizing process is characterized in that,
Comprise: the contained pressure energy of the isolated methyl alcohol of methyl alcohol high-pressure separator is reclaimed; Then, the methyl alcohol that carries out after described pressure energy reclaims is carried out flash distillation.
2. methanol synthesizing process according to claim 1 is characterized in that,
Carry out described pressure energy by the hydraulic turbine machine and reclaim, and the mechanical energy of described hydraulic turbine machine output is flowed to generator or water pump or electric motor as motivating force.
3. methanol synthesizing process according to claim 2 is characterized in that,
Also comprise: cool off the shaft seal end face of described hydraulic turbine machine with de-mineralized water, and will cool off de-mineralized water behind the described shaft seal end face and the methyl alcohol after the flash distillation converges.
4. according to claim 2 or 3 described methanol synthesizing process, it is characterized in that,
When discharging in the turbine process of dissolved gases in the methyl alcohol at described hydraulic turbine machine, gas and the rear methyl alcohol from described hydraulic turbine machine output of turbine processing that discharges is converged.
5. a system for methanol synthesis that is used for each described technique of claim 1-4 is characterized in that, comprising: methyl alcohol high-pressure separator, flash tank and hydraulic turbine machine,
Wherein, the working medium entrance of described hydraulic turbine machine is communicated with the outlet of the methyl alcohol of described methyl alcohol high-pressure separator, and the sender property outlet of described hydraulic turbine machine is communicated with the entrance of described flash tank.
6. system for methanol synthesis according to claim 5 is characterized in that,
On the connecting pipeline between the working medium entrance of described methyl alcohol outlet and described hydraulic turbine machine, also be provided with strainer.
7. according to claim 5 or 6 described system for methanol synthesis, it is characterized in that,
The main shaft output terminal of described hydraulic turbine machine is connected with the drive shaft of generator.
8. according to claim 5 or 6 described system for methanol synthesis, it is characterized in that, also comprise:
For synthesizing methanol reacts the synthetic tower that reaction compartment is provided, has the air outlet of discharging for gas after the reaction; And
To the device that the reacted gas of discharging from described synthetic tower carries out condensation, be connected between the entrance of the described air outlet of described synthetic tower and described methyl alcohol high-pressure separator.
9. system for methanol synthesis according to claim 8 is characterized in that, also comprises the boiler water circulation system take described synthetic tower as heat source accommodation device, and described boiler water circulation system comprises:
Boiler and drive water in the described boiler and from described synthetic tower, absorb the one group of water pump that returns described boiler after the synthesizing methanol reaction institute release of heat,
Wherein, this group water pump is made of at least two water pumps in parallel or that be cascaded, and the drive shaft of one of them described water pump is connected with the main shaft output terminal of described hydraulic turbine machine.
10. system for methanol synthesis according to claim 9 is characterized in that,
Described synthetic tower also has: for medium inlet and the media outlet of the medium turnover that absorbs synthesizing methanol reaction institute release of heat;
Described boiler has recirculated water entrance and circulating water outlet, and described one group of water pump is formed by two water pumps that are connected in parallel;
Wherein, the pump intake of these two water pumps is communicated with the circulating water outlet of described boiler, and the pump discharge of these two water pumps is communicated with the medium inlet of described synthetic tower, and the media outlet of described synthetic tower is communicated with the recirculated water entrance of described boiler.
11. system for methanol synthesis according to claim 9 is characterized in that,
Replace described one group of water pump with the drive unit that is formed by asynchronous machine and the first water pump, connect together by shaft coupling between the drive shaft of the output shaft of described asynchronous machine and described the first water pump,
Wherein, the input shaft of described asynchronous machine connects together by the main shaft output terminal of clutch coupling and described hydraulic turbine machine.
12. system for methanol synthesis according to claim 9 is characterized in that,
Replace described one group of water pump with the drive unit that is comprised of asynchronous machine and the first water pump, an end of the drive shaft of the output shaft of described asynchronous machine and described the first water pump connects together by shaft coupling,
Wherein, the other end of the drive shaft of described the first water pump is connected with the main shaft output terminal of described hydraulic turbine machine by clutch coupling.
13. according to claim 5-6, each described system for methanol synthesis among the 9-12, it is characterized in that,
Institute discharges the venting port of gas discharge in described hydraulic turbine machine is provided with for methyl alcohol turbine process, and described venting port is communicated with the described sender property outlet of described hydraulic turbine machine by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210119479.1A CN103373898B (en) | 2012-04-20 | 2012-04-20 | Methanol synthesizing process, system for methanol synthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210119479.1A CN103373898B (en) | 2012-04-20 | 2012-04-20 | Methanol synthesizing process, system for methanol synthesis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103373898A true CN103373898A (en) | 2013-10-30 |
| CN103373898B CN103373898B (en) | 2016-02-24 |
Family
ID=49459789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210119479.1A Active CN103373898B (en) | 2012-04-20 | 2012-04-20 | Methanol synthesizing process, system for methanol synthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103373898B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754663A (en) * | 2016-04-21 | 2016-07-13 | 北京航天动力研究所 | Residual pressure energy recovery system and method for coal gasification black water treatment system |
| CN107216236A (en) * | 2017-04-28 | 2017-09-29 | 中石化宁波工程有限公司 | Low pressure methanol synthesis method |
| EP3199231A4 (en) * | 2014-09-24 | 2018-08-01 | Ren Lou | Large reactor and device and process thereof |
| CN109173595A (en) * | 2018-09-05 | 2019-01-11 | 中石化上海工程有限公司 | The method of lighter hydrocarbons separator pressure recovery energy |
| CN109173593A (en) * | 2018-09-05 | 2019-01-11 | 中石化上海工程有限公司 | The recovery method of liquefied natural gas plant pressure energy |
| CN109173596A (en) * | 2018-09-05 | 2019-01-11 | 中石化上海工程有限公司 | The method of ethylene oxide device pressure recovery energy |
| CN109200758A (en) * | 2018-09-05 | 2019-01-15 | 中石化上海工程有限公司 | The method of ethylene unit pressure recovery energy |
| CN109200757A (en) * | 2018-09-05 | 2019-01-15 | 中石化上海工程有限公司 | The method of natural gas ethylene unit pressure recovery energy |
| CN109200756A (en) * | 2018-09-05 | 2019-01-15 | 中石化上海工程有限公司 | The recovery method of preparing propylene from methanol device pressure energy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065483A (en) * | 1974-07-02 | 1977-12-27 | Imperial Chemical Industries Limited | Methanol |
| US4219492A (en) * | 1978-04-18 | 1980-08-26 | Toyo Engineering Corporation | Process for manufacturing methanol |
| CN1294110A (en) * | 1999-10-26 | 2001-05-09 | 中国寰球化学工程公司 | Solvent suction process for separation of hydrocarbon mixture |
| CN101161613A (en) * | 2007-11-27 | 2008-04-16 | 汤广德 | Dry gas hydrogen manufacturing cogeneration methanol technics |
-
2012
- 2012-04-20 CN CN201210119479.1A patent/CN103373898B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065483A (en) * | 1974-07-02 | 1977-12-27 | Imperial Chemical Industries Limited | Methanol |
| US4219492A (en) * | 1978-04-18 | 1980-08-26 | Toyo Engineering Corporation | Process for manufacturing methanol |
| CN1294110A (en) * | 1999-10-26 | 2001-05-09 | 中国寰球化学工程公司 | Solvent suction process for separation of hydrocarbon mixture |
| CN101161613A (en) * | 2007-11-27 | 2008-04-16 | 汤广德 | Dry gas hydrogen manufacturing cogeneration methanol technics |
Non-Patent Citations (2)
| Title |
|---|
| 余良俭，陈允中: "液力能量回收透平在石化行业中的应用", 《石油化工设备技术》, vol. 17, no. 04, 30 July 1996 (1996-07-30), pages 27 * |
| 赵月刚等: "气体净化富液余压能量回收液力透平泵在我厂的改造应用", 《化工设计通讯》, vol. 35, no. 03, 30 September 2009 (2009-09-30), pages 19 - 21 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3199231A4 (en) * | 2014-09-24 | 2018-08-01 | Ren Lou | Large reactor and device and process thereof |
| CN105754663A (en) * | 2016-04-21 | 2016-07-13 | 北京航天动力研究所 | Residual pressure energy recovery system and method for coal gasification black water treatment system |
| CN105754663B (en) * | 2016-04-21 | 2019-01-08 | 北京航天动力研究所 | A kind of coal gasified black water processing system remaining energy recovery system and method |
| CN107216236A (en) * | 2017-04-28 | 2017-09-29 | 中石化宁波工程有限公司 | Low pressure methanol synthesis method |
| CN107216236B (en) * | 2017-04-28 | 2023-04-07 | 中石化宁波工程有限公司 | Low pressure methanol synthesis process |
| CN109173596A (en) * | 2018-09-05 | 2019-01-11 | 中石化上海工程有限公司 | The method of ethylene oxide device pressure recovery energy |
| CN109173593A (en) * | 2018-09-05 | 2019-01-11 | 中石化上海工程有限公司 | The recovery method of liquefied natural gas plant pressure energy |
| CN109200758A (en) * | 2018-09-05 | 2019-01-15 | 中石化上海工程有限公司 | The method of ethylene unit pressure recovery energy |
| CN109200757A (en) * | 2018-09-05 | 2019-01-15 | 中石化上海工程有限公司 | The method of natural gas ethylene unit pressure recovery energy |
| CN109200756A (en) * | 2018-09-05 | 2019-01-15 | 中石化上海工程有限公司 | The recovery method of preparing propylene from methanol device pressure energy |
| CN109173593B (en) * | 2018-09-05 | 2021-05-14 | 中石化上海工程有限公司 | Method for recovering pressure energy of liquefied natural gas device |
| CN109173596B (en) * | 2018-09-05 | 2021-05-18 | 中石化上海工程有限公司 | Method for recovering pressure energy of ethylene oxide device |
| CN109173595A (en) * | 2018-09-05 | 2019-01-11 | 中石化上海工程有限公司 | The method of lighter hydrocarbons separator pressure recovery energy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103373898B (en) | 2016-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103373898B (en) | Methanol synthesizing process, system for methanol synthesis | |
| CN206538206U (en) | It is a kind of can optimizing water quality heat reclamation device | |
| CN107098422B (en) | Ship waste heat desalination system and desalination method | |
| CN102878603A (en) | Gas-steam circulation combined double-stage coupling heat pump heat supply device | |
| CN102557315B (en) | Process and system for treating gasified grey water | |
| CN102671510A (en) | Recovery process of flue gas CO2 | |
| CN106968954A (en) | A kind of residual neat recovering system of air compressor machine | |
| CN202538636U (en) | Low-temperature methanol washing system | |
| CN101334241A (en) | Vacuum waste steam reclamation and utilization system | |
| CN202543108U (en) | Methanol synthesis system | |
| CN102505990B (en) | Power generation method of condensing double-working medium gas turbine circulation system | |
| CN216741653U (en) | Floating Production and Storage Oil (FPSO) driving system based on nuclear power | |
| CN105840247A (en) | System for driving air compressor by using recycled residual heat and running method of system | |
| CN108894829A (en) | A kind of pneumatic lubricating oil supply system of Organic Rankine Cycle expanding machine based on four-way reversing valve | |
| CN105156165A (en) | Two-level organic Rankine cycle waste-heat recovery system for internal combustion engine | |
| CN210384862U (en) | Urea evaporative condenser evacuating device | |
| CN114046189A (en) | Floating Production and Storage Oil (FPSO) driving system based on nuclear power | |
| CN104006374B (en) | Based on condensation water recovery system and the method for work of coagulation hydroenergy backwater heat exchanger | |
| CN106837660B (en) | A kind of multi-stage heat presurized water reactor circulation electric generating apparatus and method | |
| CN100590321C (en) | Compressor intercooling system | |
| CN215057627U (en) | Low-grade waste heat negative pressure steam power generation system containing impurities | |
| CN201255588Y (en) | Vacuum exhaust steam recovery and utilization system | |
| CN221074638U (en) | Skid-mounted exhaust steam pressurizing and recycling device | |
| CN101216051B (en) | Jet-stream whirl type compression pump and its uses in power generation system | |
| CN205860820U (en) | Dehydrator waste gas purification residual heat reutilizing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |