CN208103939U - It is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam - Google Patents
It is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam Download PDFInfo
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- CN208103939U CN208103939U CN201820531074.1U CN201820531074U CN208103939U CN 208103939 U CN208103939 U CN 208103939U CN 201820531074 U CN201820531074 U CN 201820531074U CN 208103939 U CN208103939 U CN 208103939U
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- pressure steam
- nitric acid
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- 229910017604 nitric acid Inorganic materials 0.000 title claims abstract description 97
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000006227 byproduct Substances 0.000 claims abstract description 75
- 238000004891 communication Methods 0.000 claims abstract description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Pipeline Systems (AREA)
Abstract
The utility model relates to the pipe network field of double pressurized method production dust technology, it is specifically a kind of without in external supply, the dilute nitric acid production system of low-pressure steam.Including by-product medium pressure steam line, extraneous low-pressure steam pipeline, parallel communication is in nitric acid A device by-product medium pressure steam line and nitric acid B device by-product medium pressure steam line in by-product medium pressure steam line respectively, parallel communication nitric acid A device low-pressure steam pipeline and enters nitric acid B device low-pressure steam pipeline in entering on extraneous low-pressure steam pipeline respectively, is parallel with by-product middle pressure steam by-pass line in the by-product medium pressure steam line between nitric acid A device by-product medium pressure steam line and nitric acid B device by-product medium pressure steam line gas outlet and by-product medium pressure steam line gas outlet.Dilute nitric acid production system described in the utility model, can nitric acid plant normal operation in, low-pressure pipe network without steam when nitric acid plant still can normally be produced, improve device operation stability and economy.
Description
Technical field
The utility model relates to the pipe network field of double pressurized method production dust technology, it is specifically a kind of without in external supply,
The dilute nitric acid production system of low-pressure steam.
Background technique
In existing double pressurized method production dust technology normal productive process, middle pressure steam self-sufficient can not need extraneous confession
It gives, but still relies on the low-pressure steam of pipe network input.When boiler shop parking or when low-pressure steam ductwork pressure fluctuation by
Interlocking, which can be triggered, in low-pressure steam supply deficiency causes device to stop.The operation of nitric acid plant place one's entire reliance upon boiler shop operation
The case where.
Utility model content
The utility model mentions to solve the problems, such as that existing nitric acid plant runs the boiler shop operating condition that places one's entire reliance upon
A kind has been supplied to be not necessarily in external supply, the dilute nitric acid production system of low-pressure steam.
The utility model is achieved through the following technical solutions：It is a kind of without in external supply, dilute nitre of low-pressure steam
Sour production system, including by-product medium pressure steam line, extraneous low-pressure steam pipeline, parallel communication is in by-product middle pressure steam pipe respectively
Nitric acid A device by-product medium pressure steam line and nitric acid B device by-product medium pressure steam line on line, parallel communication is in the external world respectively
Entering on low-pressure steam pipeline and enters nitric acid B device low-pressure steam pipeline at nitric acid A device low-pressure steam pipeline, is located at nitric acid A and fills
Set by-product medium pressure steam line and nitric acid B device by-product medium pressure steam line gas outlet and by-product medium pressure steam line gas outlet it
Between by-product medium pressure steam line on be parallel with by-product middle pressure steam by-pass line, be in series with desuperheat on by-product middle pressure steam by-pass line
Pressure reducer, the other end of by-product middle pressure steam by-pass line are connected on extraneous low-pressure steam pipeline, are located at by-product middle pressure steam
Third valve, position are in series in by-product medium pressure steam line between by-pass line air inlet and by-product medium pressure steam line gas outlet
It is gone here and there on extraneous low-pressure steam pipeline between by-product middle pressure steam by-pass line gas outlet and extraneous low-pressure steam pipeline air inlet
It is associated with the 4th valve.
As the further improvement of technical solutions of the utility model, the water inlet of the temperature-decreased pressure reducer be connected to boiler to
At water.
As the further improvement of technical solutions of the utility model, the air inlet and air outlet of the temperature-decreased pressure reducer are punished
First valve and the second valve are not installed.
It is described to enter nitric acid A device low-pressure steam pipeline and to enter nitre as the further improvement of technical solutions of the utility model
The 5th valve is in series on extraneous low-pressure steam pipeline between sour B device low-pressure steam pipeline.
As the further improvement of technical solutions of the utility model, the nitric acid A device by-product medium pressure steam line and nitre
It is in series with valve respectively in sour B device by-product medium pressure steam line.
Dilute nitric acid production system described in the utility model, can in nitric acid plant normal operation in, low-pressure pipe network is without steaming
Nitric acid plant still can be produced normally when vapour, improve device operation stability and economy.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 be it is described in the utility model it is a kind of without in external supply, the structure of the dilute nitric acid production system of low-pressure steam
Schematic diagram.
In figure：1- by-product medium pressure steam line, 2- nitric acid A device by-product medium pressure steam line, in 3- nitric acid B device by-product
Steam pipe line, the external world 4- low-pressure steam pipeline are pressed, 5- enters nitric acid A device low-pressure steam pipeline, and 6- enters nitric acid B device low-pressure steam
Pipeline, 7- by-product middle pressure steam by-pass line, 8- temperature-decreased pressure reducer, the first valve of 9-, the second valve of 10-, 11- third valve, 12-
4th valve, the 5th valve of 13-.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
The technical solution of the utility model is described in detail with reference to the accompanying drawing.
It is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam, including by-product medium pressure steam line 1, outside
Boundary's low-pressure steam pipeline 4, parallel communication is in the nitric acid A device by-product medium pressure steam line 2 in by-product medium pressure steam line 1 respectively
With nitric acid B device by-product medium pressure steam line 3, respectively parallel communication on extraneous low-pressure steam pipeline 4 to enter nitric acid A device low
It presses steam pipe line 5 and enters nitric acid B device low-pressure steam pipeline 6, be located at nitric acid A device by-product medium pressure steam line 2 and nitric acid B is filled
It sets in the by-product medium pressure steam line 1 between 1 gas outlet of 3 gas outlet of by-product medium pressure steam line and by-product medium pressure steam line simultaneously
It is associated with by-product middle pressure steam by-pass line 7, temperature-decreased pressure reducer 8, by-product middle pressure steam branch are in series on by-product middle pressure steam by-pass line 7
The other end of pipeline 7 is connected on extraneous low-pressure steam pipeline 4, is located at 7 air inlet of by-product middle pressure steam by-pass line and by-product
It is in series with third valve 11 in by-product medium pressure steam line 1 between 1 gas outlet of medium pressure steam line, is located at by-product middle pressure steam
The 4th valve is in series on extraneous low-pressure steam pipeline 4 between 7 gas outlet of by-pass line and extraneous 4 air inlet of low-pressure steam pipeline
12。
By taking a kind of specific embodiment of the utility model as an example, the nitric acid A of existing nitric acid A device and nitric acid B device is filled
Setting by-product medium pressure steam line 2 and nitric acid B device by-product medium pressure steam line 3, to generate 3.9MPa, 440 DEG C of middle pressure steams respectively straight
It connected by-product medium pressure steam line 1 to be discharged outside to, but the required 0.5MPa of nitric acid A device and nitric acid B device, 158 DEG C
Low-pressure steam need to be delivered to low with nitric acid B device is entered into nitric acid A device low-pressure steam pipeline 5 by extraneous low-pressure steam pipeline 4
Steam pipe line 6 is pressed, to be used by nitric acid A device and nitric acid B device.But improvement provided by the utility model, it closes
Third valve 11, by the nitric acid A device by-product medium pressure steam line 2 and nitric acid B device by-product of nitric acid A device and nitric acid B device
Medium pressure steam line 3 generates 3.9MPa respectively, 440 DEG C of middle pressure steams directly pass through the near 0.5MPa of temperature-decreased pressure reducer 8,158 DEG C
Low-pressure steam is simultaneously delivered to low with nitric acid B device is entered into nitric acid A device low-pressure steam pipeline 5 by extraneous low-pressure steam pipeline 4
Steam pipe line 6 is pressed, to be used by nitric acid A device and nitric acid B device, that is to say, that the production of nitric acid A device and nitric acid B device
Low-pressure steam is formed after raw middle pressure steam pressure and temperature reducing to be utilized by itself.When the generation of nitric acid A device and nitric acid B device
Low-pressure steam is formed after middle pressure steam pressure and temperature reducing to use enough, closes the 4th valve 12；When nitric acid A device and nitric acid B device
Generation middle pressure steam pressure and temperature reducing after formed low-pressure steam deficiency use, open the 4th valve 12, the external world supply low pressure steaming
Vapour.When the middle pressure steam excess of the generation of nitric acid A device and nitric acid B device, then third valve 11 is opened, part middle pressure steam is logical
It crosses by-product medium pressure steam line 1 and enters chemical industrial park pipe network.
Specifically, the water inlet of the temperature-decreased pressure reducer 8 is connected at boiler feedwater.
Further, the first valve 9 and the second valve are separately installed at the air inlet and air outlet of the temperature-decreased pressure reducer 8
10.Staff can adjust the opening and closing of the first valve 9 and the second valve 10 as the case may be.
Preferably, described to enter nitric acid A device low-pressure steam pipeline 5 and to enter outer between nitric acid B device low-pressure steam pipeline 6
The 5th valve 13 is in series on boundary's low-pressure steam pipeline 4.Staff can adjust the 5th valve according to the operation of nitric acid B device
13 opening and closing.
Preferably, divide in the nitric acid A device by-product medium pressure steam line 2 and nitric acid B device by-product medium pressure steam line 3
Valve is not in series with it.It more can be improved the stability and economy of device production in this way.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (9)
1. it is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam, including by-product medium pressure steam line（1）, outside
Boundary's low-pressure steam pipeline（4）, parallel communication is in by-product medium pressure steam line respectively（1）On nitric acid A device by-product middle pressure steam
Pipeline（2）With nitric acid B device by-product medium pressure steam line（3）, parallel communication is in extraneous low-pressure steam pipeline respectively（4）On enter
Nitric acid A device low-pressure steam pipeline（5）With enter nitric acid B device low-pressure steam pipeline（6）, which is characterized in that it is located at nitric acid A device
By-product medium pressure steam line（2）With nitric acid B device by-product medium pressure steam line（3）Gas outlet and by-product medium pressure steam line（1）
By-product medium pressure steam line between gas outlet（1）On be parallel with by-product middle pressure steam by-pass line（7）, by-product middle pressure steam branch pipe
Line（7）On be in series with temperature-decreased pressure reducer（8）, by-product middle pressure steam by-pass line（7）Other end be connected to extraneous low-pressure steam
Pipeline（4）On, it is located at by-product middle pressure steam by-pass line（7）Air inlet and by-product medium pressure steam line（1）Pair between gas outlet
Produce medium pressure steam line（1）On be in series with third valve（11）, it is located at by-product middle pressure steam by-pass line（7）Gas outlet and the external world are low
Press steam pipe line（4）Extraneous low-pressure steam pipeline between air inlet（4）On be in series with the 4th valve（12）.
2. it is according to claim 1 it is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam, feature exists
In the temperature-decreased pressure reducer（8）Water inlet be connected at boiler feedwater.
3. it is according to claim 1 or 2 it is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam, it is special
Sign is, the temperature-decreased pressure reducer（8）Air inlet and air outlet at be separately installed with the first valve（9）With the second valve
（10）.
4. it is according to claim 1 or 2 it is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam, it is special
Sign is, it is described enter nitric acid A device low-pressure steam pipeline（5）With enter nitric acid B device low-pressure steam pipeline（6）Between the external world it is low
Press steam pipe line（4）On be in series with the 5th valve（13）.
5. it is according to claim 3 it is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam, feature exists
In, it is described enter nitric acid A device low-pressure steam pipeline（5）With enter nitric acid B device low-pressure steam pipeline（6）Between extraneous low pressure steam
Steam pipe line（4）On be in series with the 5th valve（13）.
6. it is according to claim 1 or 2 it is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam, it is special
Sign is, the nitric acid A device by-product medium pressure steam line（2）With nitric acid B device by-product medium pressure steam line（3）It is upper to go here and there respectively
It is associated with valve.
7. it is according to claim 3 it is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam, feature exists
In the nitric acid A device by-product medium pressure steam line（2）With nitric acid B device by-product medium pressure steam line（3）It is upper to be in series with respectively
Valve.
8. it is according to claim 4 it is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam, feature exists
In the nitric acid A device by-product medium pressure steam line（2）With nitric acid B device by-product medium pressure steam line（3）It is upper to be in series with respectively
Valve.
9. it is according to claim 5 it is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam, feature exists
In the nitric acid A device by-product medium pressure steam line（2）With nitric acid B device by-product medium pressure steam line（3）It is upper to be in series with respectively
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820531074.1U CN208103939U (en) | 2018-04-16 | 2018-04-16 | It is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820531074.1U CN208103939U (en) | 2018-04-16 | 2018-04-16 | It is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208103939U true CN208103939U (en) | 2018-11-16 |
Family
ID=64117666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820531074.1U Active CN208103939U (en) | 2018-04-16 | 2018-04-16 | It is a kind of without in external supply, the dilute nitric acid production system of low-pressure steam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208103939U (en) |
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2018
- 2018-04-16 CN CN201820531074.1U patent/CN208103939U/en active Active
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| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20210115 Granted publication date: 20181116 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230115 Granted publication date: 20181116 |
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