CN201586472U - Cyanide-containing waste gas treatment device - Google Patents
Cyanide-containing waste gas treatment device Download PDFInfo
- Publication number
- CN201586472U CN201586472U CN2009202909884U CN200920290988U CN201586472U CN 201586472 U CN201586472 U CN 201586472U CN 2009202909884 U CN2009202909884 U CN 2009202909884U CN 200920290988 U CN200920290988 U CN 200920290988U CN 201586472 U CN201586472 U CN 201586472U
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- venturi tube
- alkaline
- circulating slot
- wash tower
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Abstract
The utility model discloses a cyanide-containing waste gas treatment device, which comprises an alkaline tower, an alkaline liquor circulating slot, a vacuum circulating slot, a venturi tube, an alkaline liquor circulating pump and a vacuum circulating pump, wherein a waste gas inlet is arranged at the lower side of the alkaline tower; the bottom of the alkaline tower is communicated with the top of the alkaline liquor circulating slot; the upper side of the alkaline tower is communicated with the lower side of the alkaline liquor circulating slot by the alkaline liquor circulating pump; the alkaline tower, the alkaline liquor circulating slot and the alkaline liquor circulating pump form a circulating loop; the top of the alkaline tower is communicated with the upper end of the venturi tube; the top of the vacuum circulating slot is communicated with the bottom end of the venturi tube; the lower side of the vacuum circulating slot is communicated with the upper end of the venturi tube by the vacuum circulating pump; and the communication is the pipeline communication. The cyanide-containing waste gas treatment device has simple operation process, and cyanide-containing waste gas can be fully absorbed after being mixed with caustic soda solution twice. Compared with the intermittent operation in the prior art, the absorption rate is greatly increased, the caustic soda consumption is reduced, and the safe production level is improved.
Description
Technical field
The utility model relates to a kind of cyanogen emission-control equipment that contains.
Background technology
At present, in the benzene acetonitrile experimental rig, to the post processing that contains cyanogen waste gas that produces be: absorb step by step by a plurality of caustic soda storage tanks successively, have problems such as absorptivity is lower, treating capacity is little, the alkali lye consumption is big.
Along with the increase greatly of present new device product volume, needing to handle exhausted air quantity also increases greatly, and the waste gas absorptivity is required to increase, and takes up an area of the space for reducing, and needs to improve original treating apparatus and technology.
Summary of the invention
At above-mentioned prior art, the utility model provides a kind of cyanogen emission-control equipment that contains, and its wastewater treatment capacity is big, and is more complete, safer to the absorption of hydrogen cyanide gas.
The utility model is achieved through the following technical solutions:
A kind of cyanogen emission-control equipment that contains, comprise caustic wash tower, alkali lye circulating slot, vacuum cycle groove, Venturi tube, NaOH solution circulating pump and vacuum cycle pump, wherein, the caustic wash tower downside is provided with exhaust gas entrance, the caustic wash tower bottom is communicated with alkali lye circulating slot top, the caustic wash tower upside is communicated with alkali lye circulating slot downside by NaOH solution circulating pump, and caustic wash tower, alkali lye circulating slot, NaOH solution circulating pump form a closed circuit; The caustic wash tower top is communicated with the Venturi tube upper end; Vacuum cycle groove top is communicated with the Venturi tube bottom, and vacuum cycle groove downside is communicated with the Venturi tube upper end by the vacuum cycle pump; Described connection is pipeline connection.
Be equipped with control valve on the pipeline of described each structure of connection.
During work, its flow process is: contain hydrogen cyanide waste gas and enter caustic wash tower from the exhaust gas entrance of caustic wash tower downside, simultaneously, start NaOH solution circulating pump, alkali lye in the alkali lye circulating slot sprays from the caustic wash tower upside, the waste gas that contains hydrogen cyanide with spray from top to bottom the abundant hybrid reaction of soda bath after be absorbed, after the absorption, enter the alkali lye circulating slot.Residual micro-tail gas is discharged from the caustic wash tower top and is entered venturi tube, simultaneously, alkali lye in the vacuum cycle groove also enters Venturi tube by the effect of vacuum cycle pump, residual micro-tail gas in Venturi tube with the vacuum cycle groove in alkali lye be absorbed once more after fully mixing, after the absorption, enter the vacuum cycle groove.The sodium cyanide solution that circulation absorb to produce in alkali lye circulating slot and the vacuum cycle groove reaches to produce to return behind the desired concn to be made raw material and uses.
Operating process of the present utility model is simple, contains cyanogen waste gas and mixes the back with soda bath at twice and fully absorbed.Compare with intermittently operated of the prior art, absorptivity increases greatly, and has reduced the caustic soda consumption amount, has improved the safety in production level.
Use device of the present utility model, can solve problems such as the caustic soda consumption amount is big, the exhaust-gas treatment amount is little, absorptivity is low, recycling is good solution to benzene acetonitrile waste gas.Device of the present utility model is safe, and the exhaust-gas treatment amount is big, and the recycling of the Cymag of being more convenient for is extended in the reconstruction project in the future and also can be utilized widely.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a use process chart of the present utility model.
Wherein, 1, caustic wash tower; 2, alkali lye circulating slot; 3, vacuum cycle groove; 4, Venturi tube; 5, NaOH solution circulating pump; 6, exhaust gas entrance; 7, control valve; 8, vacuum cycle pump.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
A kind of cyanogen emission-control equipment that contains, comprise caustic wash tower 1, alkali lye circulating slot 2, vacuum cycle groove 3, Venturi tube 4, NaOH solution circulating pump 5 and vacuum cycle pump 8, as shown in Figure 1, wherein, caustic wash tower 1 downside is provided with exhaust gas entrance 6, caustic wash tower 1 bottom is communicated with alkali lye circulating slot 2 tops, and caustic wash tower 1 upside is communicated with alkali lye circulating slot 2 downsides by NaOH solution circulating pump 5, and caustic wash tower 1, alkali lye circulating slot 2, NaOH solution circulating pump 5 form a closed circuit; Caustic wash tower 1 top is communicated with Venturi tube 4 upper ends; Vacuum cycle groove 3 tops are communicated with Venturi tube 4 bottoms, and vacuum cycle groove 3 downsides are communicated with Venturi tube 4 upper ends by vacuum cycle pump 8; Described connection is pipeline connection.
Be equipped with control valve 7 on the pipeline of described each structure of connection.Described NaOH solution circulating pump and vacuum cycle pump are existing device in the prior art.
During work, its flow chart is as shown in Figure 2: contain hydrogen cyanide waste gas and enter caustic wash tower 1 from the exhaust gas entrance 6 of caustic wash tower downside, simultaneously, start NaOH solution circulating pump 5, alkali lye in the alkali lye circulating slot 2 sprays from caustic wash tower 1 upside, the waste gas that contains hydrogen cyanide with spray from top to bottom the abundant hybrid reaction of soda bath after be absorbed, after the absorption, enter alkali lye circulating slot 2.Residual micro-tail gas is discharged from caustic wash tower 1 top and is entered venturi tube 4, simultaneously, alkali lye in the vacuum cycle groove 3 also enters Venturi tube 4 by the effect of vacuum cycle pump 8, residual micro-tail gas in Venturi tube 4 with vacuum cycle groove 3 in alkali lye be absorbed once more after fully mixing, after the absorption, enter vacuum cycle groove 3.The sodium cyanide solution that circulation absorb to produce in alkali lye circulating slot 2 and the vacuum cycle groove 3 reaches to produce to return behind the desired concn to be made raw material and uses.
Claims (2)
1. one kind contains the cyanogen emission-control equipment, it is characterized in that: comprise caustic wash tower, alkali lye circulating slot, vacuum cycle groove, Venturi tube, NaOH solution circulating pump and vacuum cycle pump, wherein, the caustic wash tower downside is provided with exhaust gas entrance, the caustic wash tower bottom is communicated with alkali lye circulating slot top, the caustic wash tower upside is communicated with alkali lye circulating slot downside by NaOH solution circulating pump, and caustic wash tower, alkali lye circulating slot, NaOH solution circulating pump form a closed circuit; The caustic wash tower top is communicated with the Venturi tube upper end; Vacuum cycle groove top is communicated with the Venturi tube bottom, and vacuum cycle groove downside is communicated with the Venturi tube upper end by the vacuum cycle pump; Described connection is pipeline connection.
2. a kind of cyanogen emission-control equipment that contains according to claim 1 is characterized in that: be equipped with control valve on the pipeline of described each structure of connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202909884U CN201586472U (en) | 2009-12-29 | 2009-12-29 | Cyanide-containing waste gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202909884U CN201586472U (en) | 2009-12-29 | 2009-12-29 | Cyanide-containing waste gas treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201586472U true CN201586472U (en) | 2010-09-22 |
Family
ID=42746239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202909884U Expired - Fee Related CN201586472U (en) | 2009-12-29 | 2009-12-29 | Cyanide-containing waste gas treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201586472U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872704A (en) * | 2012-10-17 | 2013-01-16 | 浙江大学 | Device and method for purifying residual HCN (hydrogen cyanide) through electro-Fenton |
-
2009
- 2009-12-29 CN CN2009202909884U patent/CN201586472U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872704A (en) * | 2012-10-17 | 2013-01-16 | 浙江大学 | Device and method for purifying residual HCN (hydrogen cyanide) through electro-Fenton |
| CN102872704B (en) * | 2012-10-17 | 2014-05-07 | 浙江大学 | Device and method for purifying residual HCN (hydrogen cyanide) through electro-Fenton |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20121229 |