CN103816753A - Urea dust recycling and reutilizing device - Google Patents
Urea dust recycling and reutilizing device Download PDFInfo
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- CN103816753A CN103816753A CN201410051559.7A CN201410051559A CN103816753A CN 103816753 A CN103816753 A CN 103816753A CN 201410051559 A CN201410051559 A CN 201410051559A CN 103816753 A CN103816753 A CN 103816753A
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Abstract
The invention discloses a urea dust recycling and reutilizing device. The device comprises a gas-water separator arranged on the upper part of a urea granulating tower, the upper part of the upper section of the gas-water separator is provided with a group of cleaning nozzles which are used to spray circulation absorption liquid; the lower part of the upper section of the gas-water separator is provided with two groups of atomizing nozzles, wherein the directions of the two groups of atomizing nozzles are opposite, a packing layer is arranged between the two groups of atomizing nozzles, the two groups of atomizing nozzles are communicated with a circulation absorption pump through pipelines; the side wall of the upper part of the lower section of the gas-water separator is provided with a plurality of gas inlets, the bottom of the lower section of the gas-water separator is a liquid collecting tank, the bottom of the liquid collecting tank is through and connected to a liquid descending pipe, the lower part of the urea granulating tower is provided with a middle tank which is used to store the circulation absorption liquid flowing from the liquid descending pipe, and the middle tank is connected to the circulation absorption pump which is used to transport the circulation absorption liquid to the gas-water separator for another time. Through the way mentioned above, the urea dust recycling and reutilizing device can effectively recycle the urea dust particles generated during the urea production process, achieves the goals of dust removing and recycling, and protects the environment at the same time.
Description
Technical field
The present invention relates to urea production equipment field, particularly relate to a kind of device of carbamide dust recycling.
Background technology
Urea production adopts gravity-flow ventilation slurry-spraying pelletizing technique, in granulation process, there is tiny particle powder to produce, under current Processes and apparatus condition, be also difficult to solve, part dust falls with urea granules, most of dust is taken out of and is scattered in around granulation tower by granulation tower tower top, ultra-fine powder disseminates farther, cause surrounding environment severe contamination, crops around of plant area and the growth of flowers, plants and trees are had a strong impact on, on-site equipment, road and building are caused to corrosion, after dust is taken away by rainwater, also can cause region water system ammonia nitrogen to exceed standard.Meanwhile, this part urea draining in vain, also causes certain economic loss.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of carbamide dust recycling device, can effectively reclaim the carbamide dust particle producing in urea production, has both reached the object that dedusting is reclaimed, and has also protected environment simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A kind of carbamide dust recycling device is provided, comprise the moisture trap that is positioned at urea prilling tower top, described moisture trap bottom is connected with downspout, described urea prilling tower bottom is provided with the medial launder for receiving the circulating absorption solution that downspout flows down, and described medial launder is connecting the circulation absorption pump that circulating absorption solution is delivered into again to described moisture trap;
The epimere top of described moisture trap is provided with one group of cleaning shower nozzle for spray cycle absorption liquid, the upper pars infrasegmentalis of described moisture trap is provided with two groups of atomizers that shower nozzle direction is relative, in the middle of described two groups of atomizers, is provided with packing layer, described in two groups, atomizer is by pipeline and described circulation absorption pump UNICOM; On the sidewall on the hypomere top of described moisture trap, offer some air inlets, the hypomere bottom of described moisture trap is liquid collection case, and the bottom of described liquid collection case connects and connects downspout.
In a preferred embodiment of the present invention, described circulating absorption solution comes from urea condensed fluid or the waste hydrolyzed liquid of urea battery limit (BL).
In a preferred embodiment of the present invention, be also provided with filter in the bottom of described downspout.
In a preferred embodiment of the present invention, after described circulation absorption pump, be provided with the register that circulating absorption solution temperature is controlled to 40～50 ℃.
In a preferred embodiment of the present invention, on described medial launder, be connected with the liquid outlet that certain density circulating absorption solution is entered to urea production vapo(u)rization system.
The invention has the beneficial effects as follows:
(1) a kind of carbamide dust recycling of the present invention device, adds circulating absorption solution by the cleaning shower nozzle that is positioned at urea prilling tower top, has both played the effect to system liquid feeding, has also washed moisture trap simultaneously;
(2) in the present invention, pass through system from air inlet with the gas of carbamide dust, the circulating absorption solution of contact after atomizer atomization, reaches the object that reclaims carbamide dust; Packing layer has effectively separated the liquid in gas, and the gas of processing is discharged from, and has guaranteed dust removing effects and gas-water separation effect, avoids the circulating absorption solution after atomization to cause secondary pollution to environment, has protected environment;
(3) in the present invention, circulating absorption solution is through the effect of circulation absorption pump, repeatedly absorb carbamide dust from middle concentrated flow to atomizer, enter medial launder through downspout again, urea concentration in circulating absorption solution increases gradually, when urea concentration in circulating absorption solution is raised to certain value, just enters urea production vapo(u)rization system and reclaims, both avoid the pollution of carbamide dust to surrounding environment, and also can increase urea production simultaneously;
(4) simple in structure, the low cost of manufacture of the present invention, safe and convenient to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of the present invention;
In accompanying drawing, the mark of each parts is as follows: 1, clean shower nozzle, 2, atomizer, 3, filler, 4, air inlet, 5, liquid collection case, 6, downspout, 7, urea prilling tower, 8, liquid outlet, 9, medial launder, 10, circulation absorption pump, 11, urea prilling system, 12, resolve waste liquid.
The specific embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Refer to Fig. 1, the embodiment of the present invention comprises:
A kind of carbamide dust recycling device, comprise the moisture trap that is positioned at urea prilling tower 7 tops, the epimere top of moisture trap is provided with one group of cleaning shower nozzle 1 for spray cycle absorption liquid, the upper pars infrasegmentalis of moisture trap is provided with two groups of atomizers 2 that shower nozzle direction is relative, in the middle of two groups of atomizers 2, be provided with 3, two groups of atomizers 2 of packing layer by pipeline and circulation absorption pump 10 UNICOMs; On the sidewall on the hypomere top of moisture trap, offer some air inlets 4, the hypomere bottom of moisture trap is liquid collection case 5, and the bottom of liquid collection case 5 connects and connects downspout 6, and the bottom of downspout 6 is also provided with filter;
Urea prilling tower 7 bottoms are provided with the medial launder 9 for receiving the circulating absorption solution that downspout 6 flows down, medial launder 9 is connecting the circulation absorption pump 10 that circulating absorption solution is delivered into again to moisture trap, after circulation absorption pump 10, be provided with the register that circulating absorption solution temperature is controlled to 40～50 ℃, on medial launder 9, be connected with the liquid outlet 8 that certain density circulating absorption solution is entered to urea production vapo(u)rization system.
The course of work of the present invention is as follows:
When carbamide dust recycling device of the present invention is brought into use, first add circulating absorption solution by the cleaning shower nozzle 1 that is positioned at moisture trap top to system, the circulating absorption solution is here urea condensed fluid or the waste hydrolyzed liquid that comes from urea battery limit (BL), can play washing moisture trap and the double action to system liquid feeding by cleaning shower nozzle 1 liquid feeding, when the amount of circulating absorption solution reaches a half of medial launder 9 liquid levels, ON cycle absorption pump 10 topping ups are to atomizer 2, start to pass into gas to be absorbed from air inlet 4 simultaneously, circulating absorption solution sprays from two groups of atomizers 2, start to absorb the carbamide dust in gas, packing layer 3 between two groups of atomizers 2 has effectively separated the liquid in gas, the gas of processing is discharged from, dust removing effects and gas-water separation effect are guaranteed, avoid the circulating absorption solution after atomization to cause secondary pollution to environment, protect environment, in the process of absorption carbamide dust, because circulating absorption solution dissolved urea is endothermic process, the temperature of circulating absorption solution constantly declines, and therefore needs to open register, and the temperature of circulating absorption solution is controlled to 40～50 ℃, after the urea concentration in circulating absorption solution reaches certain value, just should enter urea production vapo(u)rization system by liquid outlet 8 and reclaim.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a carbamide dust recycling device, it is characterized in that, comprise the moisture trap that is positioned at urea prilling tower (7) top, described moisture trap bottom is connected with downspout (6), described urea prilling tower (7) bottom is provided with the medial launder (9) for receiving the circulating absorption solution that downspout (6) flows down, and described medial launder (9) is connecting the circulation absorption pump (10) that circulating absorption solution is delivered into again to described moisture trap;
The epimere top of described moisture trap is provided with one group of cleaning shower nozzle (1) for spray cycle absorption liquid, the upper pars infrasegmentalis of described moisture trap is provided with two groups of atomizers (2) that shower nozzle direction is relative, in the middle of described two groups of atomizers (2), be provided with packing layer (3), atomizer described in two groups (2) is by pipeline and described circulation absorption pump (10) UNICOM; On the sidewall on the hypomere top of described moisture trap, offer some air inlets (4), the hypomere bottom of described moisture trap is liquid collection case (5), and the bottom of described liquid collection case (5) connects and connects downspout (6).
2. carbamide dust recycling device according to claim 1, is characterized in that, described circulating absorption solution comes from urea condensed fluid or the waste hydrolyzed liquid of urea battery limit (BL).
3. carbamide dust recycling device according to claim 1, is characterized in that, is also provided with filter in the bottom of described downspout (6).
4. carbamide dust recycling device according to claim 1, is characterized in that, is provided with the register that circulating absorption solution temperature is controlled to 40～50 ℃ after described circulation absorption pump (10).
5. carbamide dust recycling device according to claim 1, is characterized in that, is connected with the liquid outlet (8) that certain density circulating absorption solution is entered to urea production vapo(u)rization system on described medial launder (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051559.7A CN103816753A (en) | 2014-02-17 | 2014-02-17 | Urea dust recycling and reutilizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051559.7A CN103816753A (en) | 2014-02-17 | 2014-02-17 | Urea dust recycling and reutilizing device |
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| CN103816753A true CN103816753A (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410051559.7A Pending CN103816753A (en) | 2014-02-17 | 2014-02-17 | Urea dust recycling and reutilizing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383790A (en) * | 2014-10-20 | 2015-03-04 | 安徽晋煤中能化工股份有限公司 | Technology for reducing noise and ammonia content generated during discharging process of CO2 stripping process urea device |
| CN106693564A (en) * | 2017-02-28 | 2017-05-24 | 宜兴市压力容器厂有限公司 | Urea dust gas absorbing and purifying system |
| CN112473552A (en) * | 2020-11-17 | 2021-03-12 | 青岛伊莱新材料有限公司 | Dust separation and collection system of prilling tower |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201217653Y (en) * | 2008-03-21 | 2009-04-08 | 李洪林 | Urea granulation flour dust recovering device |
| CN203790770U (en) * | 2014-02-17 | 2014-08-27 | 江苏晋煤恒盛化工股份有限公司 | Recycling device for urea dust |
-
2014
- 2014-02-17 CN CN201410051559.7A patent/CN103816753A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201217653Y (en) * | 2008-03-21 | 2009-04-08 | 李洪林 | Urea granulation flour dust recovering device |
| CN203790770U (en) * | 2014-02-17 | 2014-08-27 | 江苏晋煤恒盛化工股份有限公司 | Recycling device for urea dust |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383790A (en) * | 2014-10-20 | 2015-03-04 | 安徽晋煤中能化工股份有限公司 | Technology for reducing noise and ammonia content generated during discharging process of CO2 stripping process urea device |
| CN106693564A (en) * | 2017-02-28 | 2017-05-24 | 宜兴市压力容器厂有限公司 | Urea dust gas absorbing and purifying system |
| CN112473552A (en) * | 2020-11-17 | 2021-03-12 | 青岛伊莱新材料有限公司 | Dust separation and collection system of prilling tower |
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Application publication date: 20140528 |