CN204981177U - Production cyanuric acid by -product pyrolysis absorption system for ammonium sulfate - Google Patents
Production cyanuric acid by -product pyrolysis absorption system for ammonium sulfate Download PDFInfo
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- CN204981177U CN204981177U CN201520693759.2U CN201520693759U CN204981177U CN 204981177 U CN204981177 U CN 204981177U CN 201520693759 U CN201520693759 U CN 201520693759U CN 204981177 U CN204981177 U CN 204981177U
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- pyrolysis
- ammonia
- acid solution
- absorption tower
- pyrolysis oven
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Abstract
The utility model provides a production cyanuric acid by -product pyrolysis absorption system for ammonium sulfate, includes pyrolysis oven and absorption tower, and the ammonia gas inlet that export pipeline connects the absorption tower is arranged to the ammonia of pyrolysis oven, and the pyrolysis oven is the domed roof, and the centre of domed roof is equipped with the ammonia discharge port. This system has that yield height, reaction effect are good, low in production cost's advantage.
Description
Technical field
The utility model relates to cyanuric acid ammonium sulfate preparing technical field, especially relates to a kind of production cyanuric acid producing ammonium sulfate byproduct pyrolysis absorption system.
Background technology
Cyanuric acid and ammonium sulfate are conventional industrial chemicals in industry.The industrial production process of cyanuric acid is generally urea solid-phase pyrolysis, this method obtains cyanuric acid by urea pyrolysis cyclisation, in this preparation method, pyrogenic processes is undertaken by pyrolysis oven, pyrolysis oven interlude is heating zone, be loaded in the container on dolly and hold urea to be heated, by track, dolly travels and enters heating zone heating, crude product cyanuric acid is obtained after pyrolysis, again through washing, fine work cyanuric acid is obtained after the operations such as separation, and add and hanker pyrolysis ammonia out and in ammonia relief outlet Cemented filling to absorption tower, carry out absorption by acid solution can obtain ammonium sulfate, i.e. solid sulphuric acid.
In prior art, pyrolysis oven is for pushing up pyrolysis oven (see accompanying drawing 3) in side, two ammonia excretion gas relief outlets are arranged with at the top of pyrolysis oven, because right angle is dead angle, ammonia easily gathers at this dead angle place, when dead angle place ammonia concentration reaches more than 17%, ammonia can produce blast, not only compromised container, and the urea held in container also can lose, pyrolysis oven is also destroyed equally in various degree; Conventional absorption tower acid solution is sprayed downwards by top of tower, inside is provided with Multi-layers distributing dish, ammonia is upwards carried by tower bottom, acid solution absorbs ammonia and then produces ammonium sulfate, because between acid solution and ammonia, the contact reacts time is short, often makes unreacted ammonia level in tail gas high, and easily block distributing disc, impact is normal produces, and cause environmental pollution, and yield is low, production cost is high.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming existed in prior art, a kind of cyanuric acid producing ammonium sulfate byproduct pyrolysis absorption system is provided, this absorption system is by the transformation to pyrolysis oven and absorption tower structure, reduce production cost, the technical scheme adopted is: a kind of production cyanuric acid producing ammonium sulfate byproduct pyrolysis absorption system, comprise pyrolysis oven and absorption tower, the ammonia relief outlet pipeline of pyrolysis oven connects the ammonia entrance on absorption tower, it is characterized in that: described pyrolysis oven is arched top, the centre of described arched top is provided with described ammonia relief outlet.
Technical characteristic of the present utility model also has: the ammonia entrance on described absorption tower is positioned at the bottom on described absorption tower, and the top on described absorption tower is provided with acid solution entrance, and described acid solution inlet duct connects acid solution shower nozzle.
Technical characteristic of the present utility model also has: described acid solution shower nozzle comprises the lower nozzle of hydrojet down and the upper nozzle of hydrojet upward.
Technical characteristic of the present utility model also has: the shower nozzle closest to described acid solution entrance is described lower nozzle, and all the other shower nozzles are described upper nozzle.
Technical characteristic of the present utility model also has: described acid solution inlet duct connects acid storage, and the connecting tube between described acid solution entrance and described acid storage is provided with Hydraulic pump.
The beneficial effects of the utility model are: native system overcomes " dead angle " problem existed in the pyrolysis oven of top, side in prior art, have employed arched top pyrolysis oven, avoids ammonia explosion phenomenon in pyrolysis; Different and the shower nozzle be interspersed effectively extends the reaction times of acid solution in absorption tower by the multiple hydrojet directions arranged in tower, and avoid latch up phenomenon in tower, thus improve yield, reduce ammonia level in tail gas; Native system has the advantage that yield is high, reaction effect good, production cost is low.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model structural representation, and accompanying drawing 2 is pyrolysis oven structural representations in the utility model, and accompanying drawing 3 is pyrolysis oven structural representations in prior art, wherein 1 is pyrolysis oven, 11 is ammonia relief outlets of pyrolysis oven, and 2 is absorption towers, and 21 is the ammonia entrances on absorption tower, 22 is shower nozzles, 23 is acid solution entrances, and 24 is acid storages, and 25 is circulation products outlets, 26 is tail gas relief outlets, and 27 is Hydraulic pumps.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.The utility model discloses a kind of cyanuric acid producing ammonium sulfate byproduct pyrolysis absorption system, this absorption system comprises pyrolysis oven 1 and absorption tower 2, and ammonia relief outlet 11 pipeline of pyrolysis oven connects the ammonia entrance 21 on absorption tower.
In conjunction with Figure of description 3, pyrolysis oven of the prior art is square top, after urea pyrolysis, in the ammonia uphill process generated, the right angle on square top forms the dead angle of exhaust, a large amount of ammonia easily gathers herein and is difficult to discharge, and ammonia belongs to explosive gas, facts have proved, will combustion explosion after when ammonia herein, concentration reaches 17% in atmosphere, the explosion phenomenon produced by ammonia can cause container, the such as little basin etc. holding urea to burst, not only urea loss, and production unit also can be impaired, equally also the pollution without degree is caused to environment.
In order to overcome above-mentioned defect, the utility model makes the furnace roof of pyrolysis oven into arched top, and the centre of arched top is provided with the ammonia relief outlet 11 of pyrolysis oven.Like this, arc transition place overcomes the defect that dead angle ammonia is assembled.
The ammonia entrance 21 on the absorption tower in the utility model is positioned at the bottom on absorption tower 2, the top on absorption tower 2 is provided with acid solution entrance 23, acid solution entrance 23 connects multiple shower nozzle 22, shower nozzle has the lower nozzle of hydrojet down and upper nozzle two type of hydrojet upward, the size of shower nozzle, structure formation and concrete injection direction can set as required, the object arranged is to extend the reaction times of acid solution in absorption tower 2 and ensures the homogeneity that acid solution is sprayed, and the blind area avoiding acid solution to spray, contribute to the lifting of yield.
During use, urea enters in pyrolysis oven 1 to be calcined, the ammonia entrance 21 of pyrolysis ammonia out through absorption tower enters absorption tower 2 from bottom, acid solution is delivered to the top on absorption tower 2 under Hydraulic pump 27 acts on from acid storage 24, under acid solution entrance 23 is sprayed by shower nozzle, the ammonia run that rises generates ammonium sulfate through the spray reaction of multiple shower nozzle, ammonium sulfate liquid flows in acid storage 24, the ammonium sulfate liquid not meeting concentration requirement can again be transported in absorption tower 2 carry out absorption put should, until reaction product reaches outer defeated from product exit after normality.Tail gas in absorption reaction by the outside discharge of pipes of tail gas relief outlet, for reaching environmental protection object, tail gas need after subsequent purification process, reach the emission standard outer row of row again.
Certainly; above-mentioned explanation is not limitation of the utility model; the utility model is also not limited only to above-mentioned citing, the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also belongs to protection domain of the present utility model.
Claims (5)
1. produce cyanuric acid producing ammonium sulfate byproduct pyrolysis absorption system for one kind, comprise pyrolysis oven and absorption tower, the ammonia relief outlet pipeline of pyrolysis oven connects the ammonia entrance on absorption tower, and it is characterized in that: described pyrolysis oven is arched top, the centre of described arched top is provided with described ammonia relief outlet.
2. according to pyrolysis absorption system according to claim 1, it is characterized in that: the ammonia entrance on described absorption tower is positioned at the bottom on described absorption tower, the top on described absorption tower is provided with acid solution entrance, and described acid solution inlet duct connects acid solution shower nozzle.
3. according to pyrolysis absorption system according to claim 2, it is characterized in that: described acid solution shower nozzle comprises the lower nozzle of hydrojet down and the upper nozzle of hydrojet upward.
4. according to pyrolysis absorption system according to claim 3, it is characterized in that: the shower nozzle closest to described acid solution entrance is described lower nozzle, and all the other shower nozzles are described upper nozzle.
5. according to pyrolysis absorption system according to claim 2, it is characterized in that: described acid solution inlet duct connects acid storage, and the connecting tube between described acid solution entrance and described acid storage is provided with Hydraulic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520693759.2U CN204981177U (en) | 2015-09-09 | 2015-09-09 | Production cyanuric acid by -product pyrolysis absorption system for ammonium sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520693759.2U CN204981177U (en) | 2015-09-09 | 2015-09-09 | Production cyanuric acid by -product pyrolysis absorption system for ammonium sulfate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204981177U true CN204981177U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520693759.2U Active CN204981177U (en) | 2015-09-09 | 2015-09-09 | Production cyanuric acid by -product pyrolysis absorption system for ammonium sulfate |
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| CN (1) | CN204981177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025720A (en) * | 2022-07-04 | 2022-09-09 | 国能(山东)能源环境有限公司 | System and process for preparing cyanuric acid through urea pyrolysis |
-
2015
- 2015-09-09 CN CN201520693759.2U patent/CN204981177U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025720A (en) * | 2022-07-04 | 2022-09-09 | 国能(山东)能源环境有限公司 | System and process for preparing cyanuric acid through urea pyrolysis |
| CN115025720B (en) * | 2022-07-04 | 2023-08-22 | 国能(山东)能源环境有限公司 | System and process for preparing cyanuric acid by urea pyrolysis |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 252100 Qilu gourmet powder industrial park, Chiping, Shandong, Liaocheng Patentee after: Shandong Mingda chemical Polytron Technologies Inc Address before: 252100 Qilu gourmet powder industrial park, Chiping, Shandong, Liaocheng Patentee before: CHIPING MINGDA CHECMICAL CO., LTD. |