CN203794628U - Nitric acid preparation device - Google Patents
Nitric acid preparation device Download PDFInfo
- Publication number
- CN203794628U CN203794628U CN201420073262.6U CN201420073262U CN203794628U CN 203794628 U CN203794628 U CN 203794628U CN 201420073262 U CN201420073262 U CN 201420073262U CN 203794628 U CN203794628 U CN 203794628U
- Authority
- CN
- China
- Prior art keywords
- nitric acid
- heat exchanger
- cooling water
- tail gas
- unit cooler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910017604 nitric acid Inorganic materials 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000498 cooling water Substances 0.000 claims abstract description 18
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 19
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- OMBRFUXPXNIUCZ-UHFFFAOYSA-N dioxidonitrogen(1+) Chemical compound O=[N+]=O OMBRFUXPXNIUCZ-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model relates to a nitric acid preparation device comprising a nitric acid process system, wherein the nitric acid process system comprises a mixer, an oxidation furnace, a heat exchanger, a tail gas heat exchanger, an absorption tower and a nitric acid synthesizer which are sequentially connected with one another in series, comprises a gas turbine, a compressor, an air compressor and a tail gas expansion machine which are sequentially connected with one another in series, and comprises a circulating cooling water inlet pipeline and a circulating cooling water outlet pipeline; the inlet end and outlet end of the gas turbine are connected with the oxidation furnace; the inlet end of the compressor is connected with the oxidation furnace by virtue of the heat exchanger; the outlet end of the compressor is connected with the absorption tower by virtue of the tail gas heat exchanger; the output end of the air compressor is connected with the nitric acid synthesizer by virtue of a pipeline; the input end of the air compressor is connected with a dehumidifier; the input end of the tail gas expansion machine is connected with the heat exchanger; the output end of the tail gas expansion machine is connected with the dehumidifier by virtue of a first refrigerating unit; the circulating cooling water inlet pipeline and the circulating cooling water outlet pipeline are connected with the first refrigerating unit. The nitric acid preparation device disclosed by the utility model can be used for preparing high-quality nitric acid, and is high in production efficiency.
Description
Technical field
The utility model relates to nitric acid production technical field, especially a kind of preparation of nitric acid device.
Background technology
Nitric acid is a kind of important basic chemical industry raw material, is widely used in the numerous areas such as chemical industry, pharmaceutical industries, dyestuffs industries, plastics industry, national defense industry, metallurgical industry.
Nitric acid production principle is that ammonia is generated to nitrogen protoxide with air catalytic oxidation under the netted platinum alloy catalyst taking platinum as main body, then nitrogen protoxide is further oxidized to nitrogen peroxide, and last water absorbs nitrogen peroxide and makes nitric acid.
In prior art, the deficiency that nitric acid production technique exists mainly: energy utilization rate is low, and product yield is low, more than tail gas nitrogen oxide concentration 1100ppm, discharges not up to standardly, and comprehensive energy consumption is high, and environmental protection pressure is large, causes product cost to occupy high.
Utility model content
The applicant, for the shortcoming in above-mentioned existing production technology, provides a kind of preparation of nitric acid device rational in infrastructure, thereby improves nitric acid processing quality, improves resource utilization, reduces costs.
The technical scheme that the utility model adopts is as follows:
A kind of preparation of nitric acid device, comprise nitric acid process system, it comprises the mixing tank being connected in series successively, oxidized still, heat exchanger, tail gas heat exchanger, absorption tower and nitric acid synthesizer, also comprise the steam turbine of series connection successively, compressor, air compressor machine and off-gas expander, the entrance end of described steam turbine is all connected with oxidized still with exit end, the entrance end of described compressor is connected with oxidized still by heat exchanger, the exit end of described compressor is connected with absorption tower by tail gas heat exchanger, the output terminal of described air compressor machine connects by pipeline nitric acid synthesizer, the input terminus of described air compressor machine is connected with moisture eliminator, the input terminus of described off-gas expander connects heat exchanger, the output terminal of described off-gas expander is connected with moisture eliminator by the first unit cooler, also comprise the recirculated cooling water inlet ductwork and the recirculated cooling water export pipeline that are connected with the first unit cooler.
Further improvement as technique scheme:
Be in series with the second unit cooler with the first unit cooler, described the second unit cooler is connected with recirculated cooling water inlet ductwork and recirculated cooling water export pipeline respectively, and one end of described the second unit cooler is connected with the output terminal of oxidized still;
On the output terminal pipeline of described steam turbine, condenser is also installed.
The beneficial effects of the utility model are as follows:
The utility model compact construction, reasonable, easy for installation has adopted four-in-one unit in original traditional nitric acid process system, has realized energy-optimised, improve capacity usage ratio, improved Air quality, reduced energy consumption, the nitric acid of preparation high-quality, reduces costs, and production efficiency is high.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Wherein: 1, mixing tank; 2, oxidized still; 3, heat exchanger; 4, steam turbine; 5, compressor; 6, air compressor machine; 7, tail gas heat exchanger; 8, off-gas expander; 9, absorption tower; 10, nitric acid synthesizer; 11, recirculated cooling water inlet ductwork; 12, recirculated cooling water export pipeline; 13, the first unit cooler; 14, moisture eliminator; 15, the second unit cooler.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
As shown in Figure 1, the preparation of nitric acid device of the present embodiment, comprise nitric acid process system, it comprises the mixing tank 1 being connected in series successively, oxidized still 2, heat exchanger 3, tail gas heat exchanger 7, absorption tower 9 and nitric acid synthesizer 10, also comprise the steam turbine 4 of series connection successively, compressor 5, air compressor machine 6 and off-gas expander 8, the entrance end of steam turbine 4 is all connected with oxidized still 2 with exit end, the entrance end of compressor 5 is connected with oxidized still 2 by heat exchanger 3, the exit end of compressor 5 is connected with absorption tower 9 by tail gas heat exchanger 7, the output terminal of air compressor machine 6 by pipeline respectively nitric acid synthesizer 10 connect, the input terminus of air compressor machine 6 is connected with moisture eliminator 14, the input terminus of off-gas expander 8 connects heat exchanger 3, the output terminal of off-gas expander 8 is connected with moisture eliminator 14 by the first unit cooler 13, also comprise the recirculated cooling water inlet ductwork 11 and the recirculated cooling water export pipeline 12 that are connected with the first unit cooler 13.
Be in series with the second unit cooler 15, the second unit cooler 15 with the first unit cooler 13 and be connected with recirculated cooling water inlet ductwork 11 and recirculated cooling water export pipeline 12 respectively, one end of the second unit cooler 15 is connected with the output terminal of oxidized still 2.
Condenser (not marking in figure) is also installed on the output terminal pipeline of steam turbine 4.
Principle of work of the present utility model is: first, raw material enters mixing tank 1, by the effect of oxidized still 2, catalytic gold in oxidized still 2 discharges heat, make steam output, steam enters steam turbine 4, order about steam turbine 4 work (steam turbine 4 for propulsion source), the effect of steam turbine 4 drives compressor 5 to work, compressor 5 adopts nitrogen oxide gas compressor, can realize air compressing and oxidation compression, by the effect of tail gas heat exchanger 7 and heat exchanger 3 simultaneously, compressor 5 is constantly worked, and tail gas is conveyed in absorption tower 9; Compressor 5 drives air compressor machine 6 to work simultaneously, and air compressor machine 6 is under the effect of moisture eliminator 14, and entrance end enters freezing air, after pneumatics in air inlet nitric acid synthesizer 10; In the time producing for tail gas in whole system, off-gas expander 8 is worked, and tail gas enters the first unit cooler 13, and the air after refrigeration enters moisture eliminator 14, continues to flow to air compressor machine 6 by moisture eliminator 14, realizes cycle operation.
The design of the utility model the second unit cooler 15, has played the effect of the supplementary energy, in the time that the first unit cooler 13 cannot meet service requirements, can start the second unit cooler 15 and work together.
More than describing is to explanation of the present utility model, is not the restriction to utility model, and the utility model limited range, referring to claim, within protection domain of the present utility model, can be done any type of amendment.
Claims (3)
1. a preparation of nitric acid device, comprise nitric acid process system, it comprises the mixing tank (1) being connected in series successively, oxidized still (2), heat exchanger (3), tail gas heat exchanger (7), absorption tower (9) and nitric acid synthesizer (10), it is characterized in that: also comprise the steam turbine (4) of series connection successively, compressor (5), air compressor machine (6) and off-gas expander (8), the entrance end of described steam turbine (4) is all connected with oxidized still (2) with exit end, the entrance end of described compressor (5) is connected with oxidized still (2) by heat exchanger (3), the exit end of described compressor (5) is connected with absorption tower (9) by tail gas heat exchanger (7), the output terminal of described air compressor machine (6) connects by pipeline nitric acid synthesizer (10), the input terminus of described air compressor machine (6) is connected with moisture eliminator (14), the input terminus of described off-gas expander (8) connects heat exchanger (3), the output terminal of described off-gas expander (8) is connected with moisture eliminator (14) by the first unit cooler (13), also comprise the recirculated cooling water inlet ductwork (11) and the recirculated cooling water export pipeline (12) that are connected with the first unit cooler (13).
2. preparation of nitric acid device as claimed in claim 1, it is characterized in that: be in series with the second unit cooler (15) with the first unit cooler (13), described the second unit cooler (15) is connected with recirculated cooling water inlet ductwork (11) and recirculated cooling water export pipeline (12) respectively, and one end of described the second unit cooler (15) is connected with the output terminal of oxidized still (2).
3. preparation of nitric acid device as claimed in claim 1, is characterized in that: on the output terminal pipeline of described steam turbine (4), condenser is also installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420073262.6U CN203794628U (en) | 2014-02-20 | 2014-02-20 | Nitric acid preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420073262.6U CN203794628U (en) | 2014-02-20 | 2014-02-20 | Nitric acid preparation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203794628U true CN203794628U (en) | 2014-08-27 |
Family
ID=51376861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420073262.6U Expired - Lifetime CN203794628U (en) | 2014-02-20 | 2014-02-20 | Nitric acid preparation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203794628U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169740A (en) * | 2015-10-12 | 2015-12-23 | 中石化上海工程有限公司 | Method for recycling oxidized exhaust gas energy of phenol-acetone device |
| CN107265421A (en) * | 2016-04-06 | 2017-10-20 | 曼柴油机和涡轮机欧洲股份公司 | Mechanical unit for producing nitric acid |
-
2014
- 2014-02-20 CN CN201420073262.6U patent/CN203794628U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169740A (en) * | 2015-10-12 | 2015-12-23 | 中石化上海工程有限公司 | Method for recycling oxidized exhaust gas energy of phenol-acetone device |
| CN105169740B (en) * | 2015-10-12 | 2017-12-29 | 中石化上海工程有限公司 | The method of phenol-acetone device oxidized tail gas energy regenerating |
| CN107265421A (en) * | 2016-04-06 | 2017-10-20 | 曼柴油机和涡轮机欧洲股份公司 | Mechanical unit for producing nitric acid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |