CN208684812U - A kind of system of modification and recovery acetic acid plant byproduct steam - Google Patents
A kind of system of modification and recovery acetic acid plant byproduct steam Download PDFInfo
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- CN208684812U CN208684812U CN201721625622.9U CN201721625622U CN208684812U CN 208684812 U CN208684812 U CN 208684812U CN 201721625622 U CN201721625622 U CN 201721625622U CN 208684812 U CN208684812 U CN 208684812U
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Abstract
The utility model discloses a kind of systems of modification and recovery acetic acid plant byproduct steam, the system comprises external circulation heat exchanging devices, vapour vapour injector, external circulation heat exchanging device is connect by pipeline with acetic acid plant 0.25Mpag steam pipe network, the external circulation heat exchanging device is connect by pipeline with external world's 0.6Mpag steam pipe network, the external circulation heat exchanging device is connect by pipeline with vapour vapour injector, and the vapour vapour injector is connect with extraneous 0.6Mpag steam pipe network, high steam, desuperheating water respectively.The problems such as system of the modification and recovery acetic acid plant byproduct steam of the utility model, recycles byproduct steam caused by external circulation heat exchanging device effectively, solves the problems, such as that steam pipe network cannot be incorporated to when byproduct steam pressure is low, solves energy waste, on-site noise.
Description
Technical field
The utility model relates to a kind of systems for recycling hot steam, more particularly to a kind of recovery of acetic acid device byproduct steam
System.
Background technique
Low-pressure methanol liquid phase carbonyl synthesizes in the technique of acetic acid, and the reaction for synthesizing acetic acid is exothermic reaction, in order to remain anti-
Answer temperature constant, it is ensured that reaction carries out within the scope of best temperature, and wherein most reaction heat is by external circulation heat exchanging device
It removes, external circulation heat exchanging device, as cooling medium, is steamed using 1.6Mpag deaerated water to just produce by-product after exchanging heat
Vapour, and it is incorporated into 0.25Mpag steam pipe network, for the heat tracing in device winter, while by adjusting its byproduct steam generated
The flow of 0.25Mpag steam pipe network is incorporated to control reaction temperature, maintaining reaction temperature is constant.According to the actual condition of production,
After device reaches certain load, external circulation heat exchanging device can produce a large amount of byproduct steam, and when winter, used in device heat tracing
0.25Mpag quantity of steam is less, remaining byproduct steam is had to whole in order to ensure reaction temperature in normal indication range
Concentration is discharged on the spot, and especially in summer, when device does not need heat tracing, byproduct steam caused by external circulation heat exchanging device is just whole
It discharges on the spot, this not only causes the great waste of the energy, also produces the pollution problems such as noise and gas to environment.
The method for having patent to introduce recovery of acetic acid device byproduct steam is recycled in 0.6Mpag steam pipe network, but
In actual motion, after acetic acid plant mentions certain load, there is the byproduct steam pressure of external circulation heat exchanging device generation lower than pipe
Network pressure power leads to a large amount of byproduct steam outlets so that byproduct steam can not be incorporated in 0.6Mpag steam pipe network, causes the energy unrestrained
Take and the problem of environmental pollution.
Utility model content
In order to solve the problems in the existing technology, the utility model provides a kind of modification and recovery acetic acid plant by-product steaming
The system of vapour overcomes byproduct steam pressure caused by external circulation heat exchanging device in the prior art is low cannot be incorporated to 0.6Mpag steam
In pipe network, and the problem of cause byproduct steam discharge capacity is big on the spot, energy waste, environmental pollution.
The technical solution of the utility model is:
A kind of system of modification and recovery acetic acid plant byproduct steam, the system comprises external circulation heat exchanging device, vapour vapour injections
Device, external circulation heat exchanging device are connect by pipeline with acetic acid plant 0.25Mpag steam pipe network, and the external circulation heat exchanging device passes through pipe
Line is connect with external world's 0.6Mpag steam pipe network, and the external circulation heat exchanging device is connect by pipeline with vapour vapour injector, the vapour
Vapour injector is connect with extraneous 0.6Mpag steam pipe network, high steam pipe network and desuperheating water respectively.
First flowmeter, the second adjusting are equipped between the external circulation heat exchanging device and acetic acid plant 0.25Mpag steam pipe network
Valve and third regulating valve, the second regulating valve and third regulating valve are connected in parallel；The external circulation heat exchanging device and on the spot discharge between
Equipped with the 5th shut-off valve；Pipeline between the external circulation heat exchanging device and external world's 0.6Mpag steam pipe network is equipped with the first cut-off
Valve, the second shut-off valve；It is attached and is equipped with corresponding instrument attachment between first shut-off valve and the second shut-off valve by pipeline:
One pressure transmitter, the first thermometer, second flowmeter, the first regulating valve and second pressure transmitter；First shut-off valve
Third shut-off valve and the 4th shut-off valve are additionally provided on pipeline between the second shut-off valve.The external circulation heat exchanging device draws with vapour vapour
The pipeline of emitter connection is equipped with the 4th regulating valve, third pressure transmitter.The vapour vapour injector and external world's 0.6Mpag steam pipe
Net is connected with second temperature meter, is connected with the 5th regulating valve with high pressure steam line, is connected with desuperheat water pipeline
Six regulating valves.
A kind of method of modification and recovery acetic acid plant byproduct steam, includes the following steps:
(1) pipeline that Dichlorodiphenyl Acetate device external circulation heat exchanging device byproduct steam is incorporated to extraneous 0.6Mpag steam pipe network is blown
It sweeps, is airtight, heating coil being carried out to the pipeline again after qualified, confirmation 0.6Mpag steam pipe network normally comes into operation before heating coil, and confirmation second is adjusted
It is in the open state to save valve, third regulating valve and the 5th shut-off valve, to guarantee that acetic acid plant operates normally, is adjusted by second
Valve, third regulating valve and the 5th shut-off valve control reaction temperature.
(2) heating coil operating method are as follows: close the first shut-off valve, open third shut-off valve, crack first regulating valve opens the
Four shut-off valves, crack second shut-off valve carry out heating coil to pipeline, until the second shut-off valve standard-sized sheet, turn down third shut-off valve and the
Four shut-off valves make pipeline be in hot standby state.
(3) when acetic acid plant production is in stable state, the first regulating valve of closing slowly opens the first shut-off valve until complete
It opens, when the pressure that first pressure transmitter is shown is less than the pressure that show of second pressure transmitter, slow the 4th regulating valve of opening,
The byproduct steam that external circulation heat exchanging device generates is introduced into vapour vapour injector, while slowly opening the 5th regulating valve, by high pressure
Steam is introduced into vapour vapour injector, and byproduct steam and high steam pass through the effect of vapour vapour injector, after two bursts of steam mixing,
It exports out from vapour vapour injector and enter in 0.6Mpag pipe network, in the process setting for protection external world's 0.6Mpag steam pipe network
It is standby, pipeline is not damaged, by adjust the 6th regulating valve by desuperheating water be introduced into vapour vapour injector outlet, control vapour vapour injector
It exports second temperature meter temperature and is no more than 230 DEG C, while in order to control acetic acid plant reaction temperature, recycling byproduct steam, slowly
Turn down the second regulating valve, third regulating valve and the 5th shut-off valve.
(4) it when acetic acid plant shut-down, is generated without byproduct steam, to prevent 0.6Mpag main steam range steam from altering, needs to close
The 4th regulating valve is closed, the 5th regulating valve is simultaneously closed off, second temperature meter temperature is exported according to vapour vapour injector, regulating valve the 6th is adjusted
Section valve is up to closing, the second shut-off valve holding full-gear, the first shut-off valve of closing, crack third shut-off valve, the 4th shut-off valve,
First regulating valve makes whole pipeline be in hot standby state.
The utility model has the following beneficial effects: the system of the modification and recovery acetic acid plant byproduct steam of the utility model, increases
Add vapour vapour injector equipment, makes byproduct steam caused by external circulation heat exchanging device in pressure lower than 0.6Mpag steam pipe network pressure
In the case where can effectively recycle, solve energy waste, on-site noise the problems such as.Vapour vapour injector is disorderly using jet stream
Dynamic diffusion due to the effect of nozzle throttling, is formed inside vapour vapour injector when high steam enters in vapour vapour injector
Low-pressure area, the pressure of low-pressure area is lower than byproduct steam pressure caused by external circulation heat exchanging device, so that byproduct steam enters vapour vapour
It is mixed in injector with high steam, to improve the pressure of vapour vapour injector outlet.Since the temperature of high steam is high, it is
It protects equipment, the pipeline of external world's 0.6Mpag steam pipe network not damaged, adds desuperheating water in the outlet of vapour vapour injector, control
Outlet temperature.
After process comes into operation, because acetic acid plant, under normal production scenarios, the temperature of reaction kettle is to pass through byproduct steam
What amount was adjusted, the cymomotive force (CMF) of byproduct steam flow must influence the control of reaction temperature, and then influence whole device operation
Stability, in order to guarantee the stable operation of device, by reinforce operate, optimize and revise, constantly grope feasible operation mode,
According to actual operating condition, byproduct steam recycling is made to reach maximizing the benefits under the premise of guaranteeing system stable operation.
Detailed description of the invention
The method system for use in carrying structural schematic diagram of Fig. 1 the utility model modification and recovery acetic acid plant byproduct steam；
Wherein: the 5th shut-off valve 6 of the 4th shut-off valve 5 of 1 first 2 second shut-off valve of shut-off valve, 3 third shut-off valve 4
One pressure transmitter, 7 second pressure transmitter, 89 first thermometer of third pressure transmitter, 10 second temperature meter 11 first
The 4th regulating valve 17 the 5th of 12 second flowmeter of flowmeter, 13 first 14 second regulating valve of regulating valve, 15 third regulating valve 16
It (arranges on the spot in 19 20 external circulation heat exchanging device of vapour vapour injector of the 6th regulating valve of regulating valve 18,21 acetic acid plant transformer and distribution power station east side
Put) fire of 22 high steam, 23 desuperheating water, 24 acetic acid plant 0.25Mpag steam pipe network, 25 0.6Mpag steam pipe network 26 first
Outside 27 second torch of torch, 28 acetic acid plant within battery limit, 29 acetic acid plant battery limit (BL).
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
The system of recovery of acetic acid device byproduct steam as shown in Figure 1, external circulation heat exchanging device and external world's 0.6Mpag steam pipe network
Between pipeline be equipped with the first shut-off valve 1 and the second shut-off valve 2；Pass through pipeline between first shut-off valve 1 and the second shut-off valve 2
Be attached and be equipped with corresponding instrument attachment: first pressure transmitter 6, the first thermometer 9, second flowmeter 12, first are adjusted
Valve 13 and second pressure transmitter 7；To guarantee that this pipeline heating coil is normally equipped with third shut-off valve 3 and the 4th shut-off valve 4.Outer circulation
Heat exchanger and 19 connecting pipeline of vapour vapour injector are equipped with the 4th regulating valve 16 and third pressure transmitter 8, with vapour vapour injector 19
Connected high pressure steam line is equipped with the 5th and adjusts 17, to guarantee that 19 outlet temperature of vapour vapour injector is equipped with the 6th regulating valve 18
With second temperature meter 10.
The modification and recovery acetic acid plant byproduct steam method of the utility model includes the following steps:
(1) first Dichlorodiphenyl Acetate device external circulation heat exchanging device byproduct steam be incorporated to the pipeline of extraneous 0.6Mpag main steam range into
Row purges, is airtight, carries out heating coil to the pipeline again after qualified, and confirmation external world's 0.6Mpag steam comes into operation before heating coil, the second tune of confirmation
It is in the open state to save valve 14, third regulating valve 15 and the 5th shut-off valve 5.Heating coil operation: closing the first shut-off valve 1, opens the
Three shut-off valves 3, crack first regulating valve 13 open the 4th shut-off valve 4, crack second shut-off valve 2, carry out heating coil to pipeline, directly
To 2 standard-sized sheet of the second shut-off valve, third shut-off valve 3 and the 4th shut-off valve 4 are turned down, pipeline is made to be in hot standby state.
(2) when acetic acid plant production is in stable state, it is (straight slowly to open the first shut-off valve 1 for the first regulating valve 13 of closing
To standard-sized sheet), when the pressure that first pressure transmitter 6 is shown is less than the pressure that second pressure transmitter 7 is shown, slow opening the 4th
Regulating valve 16, while the 5th regulating valve 17 is slowly opened, byproduct steam and high steam are introduced into vapour vapour injector, passed through
Vapour vapour injector 19 acts on, and the byproduct steam injection that external circulation heat exchanging device is generated leads in the process into 0.6Mpag steam pipe network
It overregulates the 6th regulating valve 18 control vapour vapour injector outlet 10 temperature of second temperature meter and is no more than 230 DEG C, pass through third pressure
Transmitter 8 shows that the byproduct steam that external circulation heat exchanging device generates enters the pressure of vapour vapour injector, adjusts the 4th regulating valve 16 in time
With the 5th regulating valve 17.
(3) come into operation vapour vapour injector while, control acetic acid plant be in stable state, the second regulating valve of slowly closing
14, (this valve group keeps hot standby state to third regulating valve 15, prevents by-product vapour recovery line abnormal, there are parts by winter Shi Zexu
Steam is to meet the use of within battery limit heat tracing) and the 5th shut-off valve 5.
(4) when acetic acid plant is stopped work, without the generation of by-product vapour, to prevent 0.6Mpag main steam range steam from altering, the step
Suddenly (2) need to close the 4th regulating valve 16, simultaneously close off the 5th regulating valve 17, export second temperature meter 10 according to vapour vapour injector
Temperature, the 6th regulating valve of regulating valve is until close.Second shut-off valve 2 keeps full-gear, closes the first shut-off valve 1, and crack the
Three shut-off valves 3, the 4th shut-off valve 4 and the first regulating valve 13 make whole pipeline be in hot standby state.
Although the utility model is described above in conjunction with attached drawing, the utility model is not limited to above-mentioned
Specific embodiment, the above mentioned embodiment is only schematical, is not restrictive, the ordinary skill of this field
Personnel are under the enlightenment of the utility model, when not departing from the utility model aims and scope of the claimed protection,
Many forms can also be made, these are belonged within the protection scope of the utility model.
Claims (2)
1. a kind of system of modification and recovery acetic acid plant byproduct steam, which is characterized in that the system comprises external circulation heat exchanging device,
Vapour vapour injector, external circulation heat exchanging device are connect by pipeline with acetic acid plant 0.25Mpag steam pipe network, the external circulation heat exchanging
Device also passes through pipeline and connect with external world's 0.6Mpag steam pipe network, and the external circulation heat exchanging device is connected by pipeline and vapour vapour injector
It connects, the vapour vapour injector is connect with extraneous 0.6Mpag steam pipe network, high steam pipe network and desuperheating water respectively.
2. the system of modification and recovery acetic acid plant byproduct steam according to claim 1, which is characterized in that in the system:
First flowmeter, the second regulating valve and third is equipped between external circulation heat exchanging device and acetic acid plant 0.25Mpag steam pipe network to adjust
Valve, the second regulating valve and third regulating valve are connected in parallel；The external circulation heat exchanging device and on the spot discharge between be equipped with the 5th cut-off
Valve；Pipeline between the external circulation heat exchanging device and external world's 0.6Mpag steam pipe network is equipped with the first shut-off valve, the second cut-off
Valve；Corresponding instrument attachment: first pressure pick-up is attached and is equipped between first shut-off valve and the second shut-off valve by pipeline
Device, the first thermometer, second flowmeter, the first regulating valve and second pressure transmitter；First shut-off valve and the second cut-off
Third shut-off valve and the 4th shut-off valve are additionally provided on pipeline between valve；The external circulation heat exchanging device is connect with vapour vapour injector
Pipeline is equipped with the 4th regulating valve, third pressure transmitter；The vapour vapour injector is connected with external world's 0.6Mpag steam pipe network
Second temperature meter, is connected with the 5th regulating valve with high pressure steam line, is connected with the 6th regulating valve with desuperheat water pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721625622.9U CN208684812U (en) | 2017-11-28 | 2017-11-28 | A kind of system of modification and recovery acetic acid plant byproduct steam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721625622.9U CN208684812U (en) | 2017-11-28 | 2017-11-28 | A kind of system of modification and recovery acetic acid plant byproduct steam |
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| CN208684812U true CN208684812U (en) | 2019-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108017537A (en) * | 2017-11-28 | 2018-05-11 | 天津渤化永利化工股份有限公司 | A kind of system and method for modification and recovery acetic acid plant byproduct steam |
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2017
- 2017-11-28 CN CN201721625622.9U patent/CN208684812U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108017537A (en) * | 2017-11-28 | 2018-05-11 | 天津渤化永利化工股份有限公司 | A kind of system and method for modification and recovery acetic acid plant byproduct steam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Gold Value (China) Financial Leasing Co.,Ltd. Assignor: TIANJIN BOHUA YONGLI CHEMICAL INDUSTRY Co.,Ltd. Contract record no.: X2022980015706 Denomination of utility model: A system for improving the by-product steam of acetic acid unit Granted publication date: 20190402 License type: Exclusive License Record date: 20220919 |
|
| EE01 | Entry into force of recordation of patent licensing contract |