CN101502749A - Ammonia-containing exhaust gas treating device in imidazolidine production - Google Patents
Ammonia-containing exhaust gas treating device in imidazolidine production Download PDFInfo
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- CN101502749A CN101502749A CNA2008102432589A CN200810243258A CN101502749A CN 101502749 A CN101502749 A CN 101502749A CN A2008102432589 A CNA2008102432589 A CN A2008102432589A CN 200810243258 A CN200810243258 A CN 200810243258A CN 101502749 A CN101502749 A CN 101502749A
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- pipeline
- ammonia
- neutralization pond
- purifying column
- containing exhaust
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Abstract
A processing device of tail gas containing ammonia during preparation of alkyl imidazole belongs to the technical field of environmental protection facilities. The device comprises a neutralization tank used for introducing waste acid water in the process of the preparation of alkyl imidazole, a purification tower with a vent-pipe at the top and a liquid circulating device used for introducing liquid in the neutralization tank to the purification tower and arranged on the neutralization tank; wherein, the purification tower is arranged above the neutralization tank, the middle part of the purification tower is provided with a packing layer, the lower part of the purification tower is side-connected with one end of a first pipeline and one end of a second pipeline, the other end of the first pipeline is connected with the neutralization tank, the other end of the second pipeline is connected with an air outlet of a fan, and an air inlet of the fan is connected with an ammonia-containing pipeline. The device has the advantages that the device is not only environment-friendly but also plays the role in resource recycling.
Description
Technical field
The invention belongs to technical field of environmental protection facilities, be specifically related to the ammonia-containing exhaust treating apparatus in a kind of imidazolidine production.
Background technology
Be can produce ammonia-containing exhaust in the synthetic reaction step of imidazolidine in the imidazolidine production process, prior art is that ammonia-containing exhaust is directly drained into the external world, thereby causes following problem: the one, influence environment; The 2nd, cause waste, because ammonia is available resource, can be used as the raw material reuse after for example generating ammonium sulfate.Along with the continuous enhancing of people to environmental protection consciousness, be necessary ammonia tail gas is reclaimed, help protecting environment first, second can bring into play the maximum using of resource, technical scheme described below is based on producing under this background.
Summary of the invention
Task of the present invention is a kind of ammonia tail gas can the recovery is provided and uses and both embody the ammonia-containing exhaust treating apparatus of the imidazolidine that economizes on resources of protection environment in producing.
Task of the present invention is finished like this, the ammonia-containing exhaust treating apparatus during a kind of imidazolidine is produced, and it comprises that one is used for the neutralization pond for the waste acid water introducing of imidazolidine production process; One top that is arranged on described neutralization pond top has the purifying column of blast pipe, middle part in this purifying column is provided with packing layer, the lower side of purifying column is connected to an end of first, second pipeline, the other end of first pipeline and described neutralization pond join, the other end of second pipeline and the gas outlet of blower fan join, and the air inlet of blower fan and ammonia-containing exhaust pipeline join; One is used for liquid with described neutralization pond causes liquid circulating device in the described purifying column, is arranged on the neutralization pond.
The lower side of neutralization pond of the present invention is connected to a recovery tube, and recovery tube is provided with recovery valve.
Liquid circulating device of the present invention comprises motor, circulating pump, the 3rd, the 4th pipeline and shower nozzle, motor and circulating pump assembly and be installed in the top of described neutralization pond, one end of the 3rd pipeline is connected with the inlet of circulating pump, the other end is insinuated in the neutralization pond, one end of the 4th pipeline is connected with the liquid outlet of circulating pump, the other end is stretched over the top of purifying column, and shower nozzle has one group, is configured on the 4th pipeline that is stretched in the purifying column and corresponding to the top of described packing layer.
The advantage of technical scheme disclosed in this invention: under the effect of liquid circulating device; waste acid water in the neutralization pond is introduced purifying column; to be incorporated into the ammonia-containing exhaust spray in the purifying column by second pipeline; be back to neutralization pond through first pipeline; the ammonium sulfate liquid circulating and recovering that is generated in the neutralization pond is in imidazolidine is produced; and the gas that the blast pipe of auto purification tower is discharged is the qualified discharge gas after purifying, and has therefore both embodied the protection environment, has brought into play the effect of resource reutilization again.
Description of drawings
Accompanying drawing is a specific embodiment structure chart of the present invention.
The specific embodiment
See also accompanying drawing, provided a neutralization pond 1, under user mode, neutralization pond 1 is a carrier with the terrace, promptly finds a place on terrace, at a side lower part of neutralization pond 1 is that the bottom on the right side of location status shown in the accompanying drawing is furnished with a recovery tube 11, recovery tube 11 is provided with recovery valve 111, when the concentration of the ammonium sulfate liquid in the neutralization pond 1 reaches necessary requirement, then opens recovery valve 111, ammonium sulfate liquid is emitted, be back to the production technology of imidazolidine after treatment.At the opposite side of neutralization pond 1 is that the top in illustrated left side is linked with a waste acid water inlet tube 12, by this waste acid water inlet tube 12 waste acid water that is produced in the imidazolidine production technology is introduced in the neutralization pond 1.
Continue to see accompanying drawing, above neutralization pond 1, purifying column 2 is set by support 25, the top of this purifying column 2 is that narrow the contracting of cat head is formed with a blast pipe 24, and the central region in the purifying column 2 is laid packing layer 21, and the material of packing layer 21 for example adopts active carbon or other materials similar.The lower side of purifying column 2 is connected in first, second pipe an end of 22,23, wherein, the other end of first pipeline 22 is connected with neutralization pond 1 and communicates, and the other end of second pipeline 23 is connected with the gas outlet of blower fan 3, the air inlet of blower fan 3 is connected with ammonia-containing exhaust pipeline 4, and the ammonia-containing exhaust that comes from used reactor in the synthetic reaction step of imidazolidine production is incorporated in the cavity of resorption of purifying column 2 through ammonia-containing exhaust pipeline 4.
Still see accompanying drawing, one cover liquid circulating device 5 is installed on the neutralization pond 1, specifically: with motor 51 and circulating pump 52 by the ways customary assembly in the prior art and place the top of neutralization pond 1, one end of the 3rd pipeline 53 is docked with the inlet of circulating pump 52, the other end of the 3rd pipeline 53 extend in the neutralization pond 1, one end of the 4th pipeline 54 docks with the liquid outlet of circulating pump 52, the other end is stretched in the purifying column 2, and corresponding to the top of described packing layer 21, and with one group of shower nozzle 55 with state spaced apart be fixed on the 4th pipeline 54 and be positioned on the body of purifying column 2.
The applicant sketches operation principle of the present invention in conjunction with the accompanying drawings, the waste acid water that is produced in the imidazolidine production process is caused in the neutralization pond 1 by waste acid water inlet tube 12, the ammonia-containing exhaust that is produced by synthetic reaction in the imidazolidine production is incorporated in the cavity of resorption of purifying column 2 by second pipeline 23 through ammonia-containing exhaust pipeline 4 and under the work of blower fan 3, motor 51 work of liquid circulating device 5 meanwhile, make circulating pump 52 in neutralization pond 1, extract waste acid water by the 3rd pipeline 53, behind the 4th pipeline 54, spray by shower nozzle 55, waste acid water acts on mutually with ammonia-containing exhaust and returns the cavity of resorption of purifying column 2, draw by first pipeline 22 and to be back to neutralization pond 1, the circulation that so goes round and begins again, when the concentration for the treatment of the ammonium sulfate in the neutralization pond 1 reaches required degree, then emit recovery, use being back in the imidazolidine production by recovery tube 11.In said process, because ammonia-containing exhaust and waste acid water generation neutralization reaction, therefore so the gas environmental emission standard requirement up to specification that blast pipe 24 is effluxed, and make the ammonia in the ammonia-containing exhaust obtain effective recovery is the double effects that has not only environmental protection but also economize on resources.
Claims (3)
1, the ammonia-containing exhaust treating apparatus during a kind of imidazolidine is produced is characterized in that it comprises that one is used for the neutralization pond (1) for the waste acid water introducing of imidazolidine production process; One top that is arranged on described neutralization pond (1) top has the purifying column (2) of blast pipe (24), middle part in this purifying column (2) is provided with packing layer (21), the lower side of purifying column (2) is connected to an end of first, second pipeline (22,23), the other end of first pipeline (22) and described neutralization pond (1) join, the gas outlet of the other end of second pipeline (23) and blower fan (3) joins, and the air inlet of blower fan (3) and ammonia-containing exhaust pipeline (4) join; One is used for liquid with described neutralization pond (1) causes liquid circulating device (5) in the described purifying column (2), is arranged on the neutralization pond (1).
2, the ammonia-containing exhaust treating apparatus during imidazolidine according to claim 1 is produced is characterized in that the lower side of described neutralization pond (1) is connected to a recovery tube (11), and recovery tube (11) is provided with recovery valve (111).
3, ammonia-containing exhaust treating apparatus during imidazolidine according to claim 1 is produced, it is characterized in that described liquid circulating device (5) comprises motor (51), circulating pump (52), the 3rd, the 4th pipeline (53,54) and shower nozzle (55), motor (51) and circulating pump (52) assembly and be installed in the top of described neutralization pond (1), one end of the 3rd pipeline (53) is connected with the inlet of circulating pump (53), the other end is insinuated in the neutralization pond (1), one end of the 4th pipeline (54) is connected with the liquid outlet of circulating pump (52), the other end is stretched over the top of purifying column (2), shower nozzle (55) has one group, is configured in that the 4th pipeline (54) that is stretched in the purifying column (2) is gone up and corresponding to the top of described packing layer (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102432589A CN101502749A (en) | 2008-12-19 | 2008-12-19 | Ammonia-containing exhaust gas treating device in imidazolidine production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102432589A CN101502749A (en) | 2008-12-19 | 2008-12-19 | Ammonia-containing exhaust gas treating device in imidazolidine production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101502749A true CN101502749A (en) | 2009-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102432589A Pending CN101502749A (en) | 2008-12-19 | 2008-12-19 | Ammonia-containing exhaust gas treating device in imidazolidine production |
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| CN (1) | CN101502749A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105061318A (en) * | 2015-07-28 | 2015-11-18 | 南通天泽化工有限公司 | Continuous production process for 2-nitroaminoimidazoline |
-
2008
- 2008-12-19 CN CNA2008102432589A patent/CN101502749A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105061318A (en) * | 2015-07-28 | 2015-11-18 | 南通天泽化工有限公司 | Continuous production process for 2-nitroaminoimidazoline |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090812 |