CN205115051U - Gaseous separates on cooling device of two pressurization nitric acid NOX - Google Patents
Gaseous separates on cooling device of two pressurization nitric acid NOX Download PDFInfo
- Publication number
- CN205115051U CN205115051U CN201520781435.4U CN201520781435U CN205115051U CN 205115051 U CN205115051 U CN 205115051U CN 201520781435 U CN201520781435 U CN 201520781435U CN 205115051 U CN205115051 U CN 205115051U
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- CN
- China
- Prior art keywords
- nitric acid
- tripping device
- gas
- gas cooling
- double pressurized
- 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 - Fee Related
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Abstract
The utility model discloses a gaseous separates on cooling device of two pressurization nitric acid NOX belongs to the chemical industry field. Its technical scheme's main points are: this separates on cooling device is whole vertical structure, and it includes the tail gas pre -heater on upper portion, the high pressure reaction water condenser at middle part and the nitrogen oxide separator of bottom. The utility model discloses an area is effectively practiced thrift to vertical structure, has reduced system resistance, need not to set up alone the condensate moreover again and collects the cooling tank.
Description
Technical field
The utility model belongs to a kind of gas separation unit, specifically, particularly relates to a kind of double pressurized method nitric acid NO
xgas cooling tripping device.
Background technology
In the production technique of double pressurized method dust technology, the empty gas mixture of ammonia generates NO after converter for ammonia oxidation reaction
xgas, reclaim after heat through series of process, enter low pressure condensation separation bleacher, in bleacher through refrigerated separation, secondary air bleaching after, enter nitrogen oxide fine seperator to be again separated further by dust technology, gas mixture is sent into compressor and is pressurizeed, after reaction under high pressure water condenser refrigerated separation, enter bottom absorption tower, NO
xproduction nitric acid is only absorbed by the water in tower.
Problems existing in the production technique of existing double pressurized method dust technology: existing tail gas pre-heater affects by high temperature condensation acid, there is seriously corroded problem in heat transfer tube, shorten service life of equipment, tail gas pre-heater in the past adopts horizontal type structure, and device bottom is also provided with condensation acid holding tank; Conventional reaction under high pressure water condenser adopts horizontal type structure mostly, and point two sections of heat exchanging segments, heat exchange segment length, and lower the temperature with water coolant, recirculated water amount ratio is larger; Nitric oxide separator and NO
xgas cooling condensing works is also provided separately, and floor space is large.
Utility model content
The utility model object is to provide a kind of double pressurized method nitric acid NO
xgas cooling tripping device, to overcome above-mentioned defect of the prior art.
The utility model realizes by the following technical solutions: a kind of double pressurized method nitric acid NO
xgas cooling tripping device, this refrigerated separation device is integral vertical type structure, and it comprises the nitric oxide separator of the tail gas pre-heater on top, the reaction under high pressure water condenser at middle part and bottom.
Interchanger is provided with in described tail gas pre-heater.
Described interchanger is shell heat exchanger, and the tubing of shell heat exchanger adopts titanium material.
Described tail gas pre-heater is provided with gas inlet, offgas outlet, upper air vent and top leakage fluid dram, and its top is provided with NO
xgas inlet.
Described reaction under high pressure water condenser is provided with recirculated water entrance, circulating water outlet, middle part venting port and middle part leakage fluid dram.
Described nitric oxide separator is provided with NO
xthe outlet of pneumatic outlet, dust technology and liquidometer mouth.
Compared with prior art, the beneficial effects of the utility model are:
(1) cooling condensation device of the present utility model adopts vertical structure, and tail gas pre-heater, reaction under high pressure water condenser, nitric oxide separator is arranged in same cooling condensation device, effectively can save floor occupying area, reduce systemic resistance;
(2) vertical layout is also conducive to the discharge of heat exchange liquid in pipe simultaneously, also reduce the corrosion of acid to equipment, the a small amount of condensation acid produced in tail gas pre-heater is lowered the temperature without the need to cooling directly to enter in reaction under high pressure water condenser, without the need to arranging separately condensed fluid collection cooling tank again;
(3) be provided with vapor-liquid separating device in the bottom of the utility model equipment, effectively can be separated NO
xgas and condensation acid, NO
xtemperature drops to less than 35 DEG C and enters bottom absorption tower, and condensation acid is squeezed into system condensing again and is separated bleacher recycling.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, tail gas pre-heater; 2, reaction under high pressure water condenser; 3, nitric oxide separator; 4, NO
xgas inlet; 5, NO
xpneumatic outlet; 6, gas inlet; 7, offgas outlet; 8, recirculated water entrance; 9, circulating water outlet; 10, dust technology outlet; 11, upper air vent; 12, top leakage fluid dram; 13, middle part venting port; 14, middle part leakage fluid dram; 15/16, liquidometer mouth.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model double pressurized method nitric acid NO
xgas cooling tripping device adopts integral vertical type structure, and it comprises top tail gas pre-heater 1, middle part reaction under high pressure water condenser 2 and bottom oxide nitrogen separator 3.
Be provided with interchanger in tail gas pre-heater 1, it is also provided with gas inlet 6, offgas outlet 7, upper air vent 11 and top leakage fluid dram 12, its top is provided with NO
xgas inlet 4, interchanger is tube and shell heat exchanger, and top tail gas pre-heater 1 is due to NO
xgas temperature is higher, reaches 160 DEG C, has the cold acid of high temperature to produce after adding heat exchange, so tail gas pre-heater 1 heat transfer tube adopts titanium material, titanium material has good corrosion-and high-temp-resistant effect, and heat transfer tube length is 5m, and heat transfer tube quantity is more than bottom reaction under high pressure water condenser 2.
Reaction under high pressure water condenser 2 is provided with recirculated water entrance 8, circulating water outlet 9, middle part venting port 13 and middle part leakage fluid dram 14, NO after itself and tail gas heat exchange
xgas temperature drops to less than 80 DEG C, so reaction under high pressure condenser 2 adopts stainless steel 304 L, bottom heat transfer tube length is 6m;
Nitric oxide separator 3 is provided with NO
xpneumatic outlet 5, liquidometer mouth 15, liquidometer mouth 16, bottom is provided with dust technology outlet 10, dust technology exports 10 pipelines and is provided with Liquid level adjusting valve, can maintain certain liquid level by automatic control equipment, wherein, nitric oxide separator 3 adopts stainless steel folding to be separated filter plate, length is 3m, resistance is little, long service life, and separation efficiency is high.
Workflow of the present utility model: from nitrogen oxide gas compressor NO
xgas (pressure 1.10MPa), enters tail gas pre-heater 1 and reaction under high pressure water condenser 2 successively, respectively with absorption tower tail gas out and water coolant heat exchange, and NO
xafter gas enters tail gas pre-heater 1, temperature drops to less than 80 DEG C by 160 DEG C, then after reaction under high pressure water condenser 2 heat exchange, reduces to less than 35 DEG C, tail gas and NO
xgas is in tail gas heat exchanger after heat exchange, and temperature is raised to 80 DEG C by 20 DEG C, then enters exhaust gas reheater device; Deammoniation evaporator evaporation liquefied ammonia after recirculated water and tail gas heat exchange, NO
xgas after vapour liquid separator is separated, is admitted to bottom absorption tower and absorbs preparation 65 ~ 68% dust technology again, and the high pressure condensation acid be separated in nitric oxide separator 3 is sent into condensation separation bleacher and bleached.
Claims (7)
1. a double pressurized method nitric acid NO
xgas cooling tripping device, it is characterized in that: this refrigerated separation device is integral vertical type structure, it comprises the nitric oxide separator (3) of the tail gas pre-heater (1) on top, the reaction under high pressure water condenser (2) at middle part and bottom.
2. double pressurized method nitric acid NO according to claim 1
xgas cooling tripping device, is characterized in that: described tail gas pre-heater is provided with interchanger in (1).
3. double pressurized method nitric acid NO according to claim 2
xgas cooling tripping device, is characterized in that: described interchanger is shell heat exchanger, and the tubing of shell heat exchanger adopts titanium material.
4. double pressurized method nitric acid NO according to claim 1
xgas cooling tripping device, it is characterized in that: described tail gas pre-heater (1) is provided with gas inlet (6), offgas outlet (7), upper air vent (11) and top leakage fluid dram (12), and its top is provided with NO
xgas inlet (4).
5. double pressurized method nitric acid NO according to claim 1
xgas cooling tripping device, is characterized in that: described reaction under high pressure water condenser (2) is provided with recirculated water entrance (8), circulating water outlet (9), middle part venting port (13) and middle part leakage fluid dram (14).
6. double pressurized method nitric acid NO according to claim 1
xgas cooling tripping device, is characterized in that: described nitric oxide separator (3) is provided with NO
xthe outlet of pneumatic outlet (5), dust technology (10) and liquidometer mouth (15).
7. double pressurized method nitric acid NO according to claim 6
xgas cooling tripping device, is characterized in that: described dust technology outlet (10) pipeline is provided with Liquid level adjusting valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781435.4U CN205115051U (en) | 2015-10-10 | 2015-10-10 | Gaseous separates on cooling device of two pressurization nitric acid NOX |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781435.4U CN205115051U (en) | 2015-10-10 | 2015-10-10 | Gaseous separates on cooling device of two pressurization nitric acid NOX |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205115051U true CN205115051U (en) | 2016-03-30 |
Family
ID=55570676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520781435.4U Expired - Fee Related CN205115051U (en) | 2015-10-10 | 2015-10-10 | Gaseous separates on cooling device of two pressurization nitric acid NOX |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205115051U (en) |
-
2015
- 2015-10-10 CN CN201520781435.4U patent/CN205115051U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20161010 |