CN202461090U - Yellow smoke absorption system for nitric acid tank area - Google Patents
Yellow smoke absorption system for nitric acid tank area Download PDFInfo
- Publication number
- CN202461090U CN202461090U CN2012200480414U CN201220048041U CN202461090U CN 202461090 U CN202461090 U CN 202461090U CN 2012200480414 U CN2012200480414 U CN 2012200480414U CN 201220048041 U CN201220048041 U CN 201220048041U CN 202461090 U CN202461090 U CN 202461090U
- Authority
- CN
- China
- Prior art keywords
- nitric acid
- pipe
- connects
- vent line
- branch pipe
- 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
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model belongs to the field of chemical equipment, and relates to a yellow smoke absorption system for a nitric acid tank area. The system comprises a vent line connected with the nitric acid tank; the tail end of the vent line is connected with an exhaust chimney of a nitric acid device. The system is characterized in that a gate valve is arranged on the vent line; the front of an inlet of the gate valve is provided with a branch pipe, wherein a head end of the branch pipe is connected with the vent line and a tail end of the branch pipe is connected with a necking part of a venturi pipe; a pressure control valve group and a gas-pressure meter are arranged on the branch pipe; and a lower side of the venturi pipe is connected with a dilute nitric acid groove which is connected with an inlet at an upper end of the venturi pipe via a dilute nitric acid pump and a dilute nitric acid pipe. The system has the beneficial effects of simple structure, convenient use, safety and reliability. The system can effectively collect yellow smoke, improves the concentration of dilute nitric acid, and prevents air pollutions, acid rain and crop disasters.
Description
Technical field
The invention belongs to the chemical industry equipment field, relate to a kind of nitric acid tank field tobacco absorption system.
Background technology
The nitric acid of existing nitric acid plant production is transported to behind the nitric acid tank field from the nitric acid tank deck yellow NO2 gas of emerging; The design of standard now all is this tobacco to be introduced the nitric acid plant aiutage through exhaust line directly the sky is discharged; So both polluted atmosphere, possibly descend acid rain again, harmed the crops.
Summary of the invention
The present invention provides a kind of nitric acid tank field tobacco absorption system simple in structure, esy to use, safe and reliable in order to remedy the deficiency of prior art.
The present invention realizes through following technical scheme:
Nitric acid of the present invention tank field tobacco absorption system; Comprise the exhaust line that connects nitric acid tank, the terminal nitric acid plant aiutage that connects of exhaust line, its special character is: exhaust line is provided with gate valve; Gate valve inlet front is provided with top and connects exhaust line, the terminal arm that connects the Venturi tube bottleneck; Arm is provided with pressure-control valve group and air gauge, and the Venturi tube below connects rare nitric acid groove, and rare nitric acid groove is connected end entrance on the Venturi tube through rare nitric acid pump with rare nitric acid pipe.
The invention has the beneficial effects as follows, simple in structure, esy to use, safe and reliable, effectively collect tobacco, improved the concentration of rare nitric acid, and prevent atmosphere pollution, down acid rain, harm the crops.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure, 1 nitric acid tank, 2 exhaust lines, 3 gate valves, 4 Venturi tubes, 5 pressure-control valve groups, 6 air gauges, 7 rare nitric acid grooves, 8 rare nitric acid pumps.
The specific embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.
Nitric acid of the present invention tank field tobacco absorption system; Comprise the exhaust line 2 that connects nitric acid tank 1, the terminal nitric acid plant aiutage that connects of exhaust line, exhaust line is provided with gate valve 3; Gate valve inlet front is provided with top and connects exhaust line, the terminal arm that connects Venturi tube 4 bottlenecks; Arm is provided with pressure-control valve group 5 and air gauge 6, and the Venturi tube below connects rare nitric acid groove 7, and rare nitric acid groove is connected end entrance on the Venturi tube through rare nitric acid pump 8 with rare nitric acid pipe.
Nitric acid of the present invention tank field tobacco absorption system; The tobacco that nitric acid tank 1 is emerged is delivered on the exhaust line 2 of nitric acid plant aiutage and adds a gate valve 3; Before valve, draw an arm, tobacco is got into Venturi tube 4 bottlenecks through pressure-control valve group 5, in the rare nitric acid groove 7 that places the Venturi tube below, extract the upper end that rare nitric acid is squeezed into Venturi tube out again with rare nitric acid pump 8; Form the NO2 GAS ABSORPTION of negative pressure when flowing through Venturi tube, improved the concentration of rare nitric acid yellow.
When utilizing the Venturi tube principle to take out in the jar of nitric acid tank field tobacco, if be pumped into negative pressure, maybe nitric acid tank be taken out flatly, therefore, on Venturi tube tobacco suction line, added a cover voltage-controlled valve group, the pressure given value is set at+2 pa.
If patent system of the present invention is out of order when overhauling, when jar internal pressure was too high, gas can overflow through overflow line and water sealed tank in jar, can not damage tank body.
1 ton of nitric acid of every production emits tobacco 2Nm3, and 1kmol NO2 is 46kg, 22.4 N m3, and producing 1 ton of nitric acid, to emit tobacco be 2 ÷, 22.4 * 46=4.107kg NO2.
NO2 is absorbed the generation red fuming nitric acid (RFNA) by water and presses following formula:
2NO2?+?O2/2?+?H2O?=?2HNO3
92 126
4.107 ×
×=4.107×126÷92=5.625
Produce 1 ton of nitric acid and emit tobacco NO2 4.107kg can generate red fuming nitric acid (RFNA) 5.625kg, 150,000 tons of nitric acid of annual product, recyclable red fuming nitric acid (RFNA) 84.375 * 104kg, promptly 843.75 tons, 2200 yuan/ton of red fuming nitric acid (RFNA)s, income from sales can reach 185.625 ten thousand yuan.
Claims (1)
1. nitric acid tank field tobacco absorption system; Comprise the exhaust line that connects nitric acid tank, the terminal nitric acid plant aiutage that connects of exhaust line, it is characterized in that: exhaust line is provided with gate valve; Gate valve inlet front is provided with top and connects exhaust line, the terminal arm that connects the Venturi tube bottleneck; Arm is provided with pressure-control valve group and air gauge, and the Venturi tube below connects rare nitric acid groove, and rare nitric acid groove is connected end entrance on the Venturi tube through rare nitric acid pump with rare nitric acid pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200480414U CN202461090U (en) | 2012-02-15 | 2012-02-15 | Yellow smoke absorption system for nitric acid tank area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200480414U CN202461090U (en) | 2012-02-15 | 2012-02-15 | Yellow smoke absorption system for nitric acid tank area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202461090U true CN202461090U (en) | 2012-10-03 |
Family
ID=46909288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200480414U Expired - Fee Related CN202461090U (en) | 2012-02-15 | 2012-02-15 | Yellow smoke absorption system for nitric acid tank area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202461090U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553877A (en) * | 2012-02-15 | 2012-07-11 | 山东洪达化工有限公司 | Yellow smoke absorption system for nitric acid pot area |
-
2012
- 2012-02-15 CN CN2012200480414U patent/CN202461090U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553877A (en) * | 2012-02-15 | 2012-07-11 | 山东洪达化工有限公司 | Yellow smoke absorption system for nitric acid pot area |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103920384A (en) | Equipment for absorbing high-concentration nitric oxides by adopting normal-pressure process | |
| CN203146015U (en) | Ascending drilling hole orifice drainage device | |
| CN205138847U (en) | Mining waterproof negative pressure gas sampling device | |
| CN202461090U (en) | Yellow smoke absorption system for nitric acid tank area | |
| CN102553877A (en) | Yellow smoke absorption system for nitric acid pot area | |
| CN203587388U (en) | Vacuum sampler | |
| CN210699529U (en) | Friedel-crafts reaction hydrogen chloride tail gas absorbing device | |
| CN213643633U (en) | Ammonia absorption device in creatine production process | |
| CN204543920U (en) | A kind of desorption recovery device for pressure for vacuum pressure swing adsorption system | |
| CN206013519U (en) | For oxirane discharging and the device of storage | |
| CN206730840U (en) | A kind of acid mist absorbing device | |
| CN202506298U (en) | Device for reducing sulfuric acid production exhaust emissions | |
| CN206934775U (en) | A kind of waste acid concentration vacuum stabilising arrangement | |
| CN205467241U (en) | A concentrate vacuum system for PVC plastic material production line | |
| CN211635919U (en) | Water-soluble tail gas absorbing device | |
| CN205288002U (en) | Outer heat -extraction system of polyether device tail gas | |
| CN204664870U (en) | A kind of for the fuel-displaced Intelligent oil-gas mixing conveying device of oil well | |
| CN208406544U (en) | A kind of methanol entrucking effluent gas recovery methanol device | |
| CN204324089U (en) | Novel heavy oil tank system | |
| CN201012317Y (en) | Highly effective absorbing equipment of nitrous acid air | |
| CN107459123A (en) | A kind of wastewater treatment equipment | |
| CN203513280U (en) | Device system for directly producing high-concentration nitric acid by using two-pressure dilute nitric acid device | |
| CN203564940U (en) | Disposal device for soluble harmful gas | |
| CN209828690U (en) | Acid discharge system for dilute nitric acid production | |
| CN203128197U (en) | Absorption device for producing sulfur trioxide by utilizing gypsum |
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 |
Granted publication date: 20121003 Termination date: 20150215 |
|
| EXPY | Termination of patent right or utility model |