CN209423238U - The recycling of urea prilling tower dust and tail gas environment protection treating device - Google Patents
The recycling of urea prilling tower dust and tail gas environment protection treating device Download PDFInfo
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- CN209423238U CN209423238U CN201821864115.5U CN201821864115U CN209423238U CN 209423238 U CN209423238 U CN 209423238U CN 201821864115 U CN201821864115 U CN 201821864115U CN 209423238 U CN209423238 U CN 209423238U
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- dust
- granulation
- urea
- tower
- prilling tower
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Abstract
The utility model relates to urea prilling tower dust recycling and tail gas environment protection treating device, including urea prilling tower outer housing, urea granulation sprayer and tower top blower, including washing spraying mechanism, the washing spraying mechanism is by cover between being granulated, collecting tank, dry load, upper dust absorbing spray head, lower dust absorbing spray head, cyclic water tank, communicating pipe and cleaning circulation pump are constituted, pass through the technical program, granulation tower produced pollution air passes through dry load, washing spray, the multinomial combined treatment technology that wet electric precipitation and electrode dust rinse, substantially increase the washing effect of carbamide dust, granulation tower has been effectively ensured and has been dropped a hint dust content lower than national standard, meet increasingly strict environmental emission standard, using forced ventilation structure, eliminate the influence to granulation tower ventilation quantity, it ensure that product cooling effect, it can be into one Step improves Urea Quality.
Description
Technical field
The utility model relates to a kind of recycling of dust and treating tail gas devices, more particularly to a kind of urea prilling tower dust
Recycling and tail gas environment protection treating device.
Background technique
With the rapid development of social economy, energy crisis, environmental pollution are on the rise, it not only destroys entire society
Living environment, also directly threaten the life security of the people, thus it is energy-saving, Environment control is imperative.
Urea prilling tower is the key equipment in urea product production, it urinates melting by gravity-flow ventilation and force ventilation
Element reaches coagulation forming and cooling in dropping process, therefore will be entrained with not in the tower top discharge tail gas of urea prilling tower
Negligible carbamide dust, and these carbamide dusts will largely drop in the range near its circumference number kilometer, it is not only rotten
Lose object, and the growth of damage to crops, and cause nearby tree branches it is withered, destroy plant area's greening and cleaning civilization be raw
It producing, this pollute can also damage the health of near its circumference staff, while this part urea is by discharging in vain,
Consumption is not only increased, production efficiency is reduced, enterprise is also weakened in the competitiveness in market, increases being produced into for urea
This.
In the prior art, the whether granulation tower of force ventilation or gravity-flow ventilation, it is cooling empty required for urea per ton
Tolerance is all very big, about 6000m3~10000m3, solution generally is used using carbamide dust characteristic soluble easily in water at present
Washing is got off, and such device is generally divided into two kinds: one is mechanical forced dedusting, two kinds are fountain dedustings.
A. mechanical dedusting granulation tower.
International and domestic granulation tower device for recovering powder has following four.
(1) add filter by spraying, a large amount of particle is washed by the air containing dust by spray section, will using filtering
Fine particle is washed off with water mist.
(2) three sections of washing filtering dust pelletizing systems, can handle exhaust gas, waste water and the dust laden air from granulation tower simultaneously, by
Bottom enters filtration tank, discharges after filtering.
(3) liquid-gas ejector system, while being used as ventilation dynamical system and dedusting.
(4) Bag filter is put english wind separation and recovery system.
The shortcomings of the prior art is since urea cooling air quantity needs 6000 m3-10000m3, mechanically remove
Dirt device volume is huge, and investment is high, and energy consumption is high, at present substantially without practical application.
B fountain dust-extraction unit.
Spray dedusting method is sprayed and is shielded interception side using packing material absorbing, spray head using the resolvability of carbamide dust
Formula dissolves and absorbs carbamide dust in tower top discharge gas, has not only reduced the pollution of air, but also a large amount of carbamide dust of recycling；In the presence of
Shortcoming be that after (1) increases dust-extraction unit, granulation tower goes out atmidometer increase, and ventilation quantity is reduced, cause product cooling not
Foot, blanking temperature increase, and product breakage increases, and is easy hardened, seriously affect product quality；(2) urea of same concentration is used
Solution washing, when control absorbing liquid concentration it is lower when, it is bigger than normal to will cause replacement amount, the raising of vapo(u)rization system load occurs, influences to fill
Set yield；When control absorbing liquid concentration is higher, washing effect is poor, and dust concentration of dropping a hint is not achieved lower than 20mg/m3's
Index, while also filler being easily caused to block, Operation and Maintenance amount increases；(3) it drops a hint after washing dedusting, it is full to form vapor
The air of sum, temperature is generally greater than 5-10 DEG C of environment temperature, and after mixing with air, temperature is reduced, and reaches hypersaturated state, meeting
Obvious white smoke is formed, trails longer, seriously affects sense organ.
Utility model content
In view of this, the main purpose of the utility model is to provide a kind of recycling of urea prilling tower dust and tail gas environmental protection
Controlling device uses filler washing and wet-esp combined treatment scheme, by the powder in dropping a hint by the technical program
Dirt efficiently flutters collection, and top uses forced ventilation structure, eliminates influence of the device resistance to granulation tower ventilation quantity, ensure that product
Cooling effect, wet electric precipitation can flutter the drop carried secretly in collection air while flutterring collection dust, reduce the drop folder dropped a hint
Band, hence it is evident that it reduces granulation tower and drops a hint and trail now, environment protection treating significant effect.
In order to achieve the above object, the technical solution of the utility model is achieved in that a kind of urea prilling tower dust
Recycling and tail gas environment protection treating device, including urea prilling tower outer housing, urea granulation sprayer and tower top blower, the urea are made
Grain spray head is arranged in urea prilling tower outer housing, and several tower top blowers, which are uniformly distributed, is separately positioned on urea prilling tower outer housing
It further include washing spraying mechanism, the washing spraying mechanism is by cover, collecting tank, dry load, powder between being granulated on top exit
Dirt Flushing nozzle, upper dust absorbing spray head, lower dust absorbing spray head, cyclic water tank, communicating pipe, dust flushing pump and wash cycle
Pump is constituted, and on urea granulation sprayer, the collecting tank is arranged on urea prilling tower outer housing top cover spiral-lock between the granulation
Between the granulation of portion, lower section, outlet on covering on top, cyclic water tank setting in cover, is provided with communicating pipe between granulation on collecting tank,
The communicating pipe is connected with cyclic water tank, and the dry load is arranged at urea prilling tower outer housing top exit, is inhaling
It receives and is respectively arranged with dust absorbing spray head and lower dust absorbing spray head above and below filler, the dust Flushing nozzle is set
It sets in urea prilling tower outer housing below tower top blower, cleaning circulation pump and dust flushing pump are separately positioned on cover between granulation
Interior, the water inlet end of cleaning circulation pump and dust flushing pump passes through connecting tube respectively and is connected with cyclic water tank, cleaning circulation pump
Water outlet is connected with upper dust Flushing nozzle and lower dust absorbing spray head respectively, and the water outlet of dust flushing pump and dust are rinsed and sprayed
Head is connected.
It include wet electric precipitation mechanism, the wet electric precipitation is by anode tube and cathode line as further technical solution
It constitutes, several anode tubes are uniformly arranged on dust Flushing nozzle and upper dust absorbing spray head in urea prilling tower outer housing vertically
Between, it is provided with cathode line in each anode tube, is loaded with DC high-voltage in anode tube and cathode line.
Beneficial effect after by adopting the above technical scheme is: a kind of recycling of urea prilling tower dust and tail gas environment protection treating dress
It sets, by the technical program, granulation tower produced pollution air passes through dry load, washing spray, wet electric precipitation and electrode
The multinomial combined treatment technology that dust rinses, substantially increases the washing effect of carbamide dust, granulation tower has been effectively ensured and has been put
Air-borne dust content is lower than national standard, meets increasingly strict environmental emission standard；Using forced ventilation structure, eliminate pair
The influence of granulation tower ventilation quantity ensure that product cooling effect, can further improve Urea Quality.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
In figure, cover, 5 collecting tanks, 6 between 1 urea prilling tower outer housing, 2 urea granulation sprayers, 3 tower top blowers, 4 are granulated
Dry load, dust absorbing spray head, 8 lower dust absorbing spray heads, 9 cyclic water tanks, 10 communicating pipes, 11 cleaning circulation pumps, 12 sun on 7
Pole pipe, 13 cathode lines, 14 dust Flushing nozzles, 15 dust flushing pumps, 16 connecting tubes.
Specific embodiment
Specific embodiment in the utility model is described in further detail below in conjunction with attached drawing.
As shown in Figure 1, the utility model relates to urea prilling tower dust recycling and tail gas environment protection treating device, including urine
Plain granulation tower outer housing 1, urea granulation sprayer 2 and tower top blower 3, the urea granulation sprayer 2 are arranged outside urea prilling tower
In shell 1, several tower top blowers 3, which are uniformly distributed, to be separately positioned on 1 top exit of urea prilling tower outer housing, further includes washing
Spraying mechanism, the washing spraying mechanism is by cover 4, collecting tank 5, dry load 6, dust Flushing nozzle 14, upper powder between being granulated
Dirt absorbs spray head 7, lower dust absorbing spray head 8, cyclic water tank 9, communicating pipe 10 and cleaning circulation pump 11 and constitutes, and covers between the granulation
For 4 spiral-lock of body on urea granulation sprayer 2, the granulation below 1 top exit of urea prilling tower outer housing is arranged in the collecting tank 5
Between on the top of cover 4, the setting of cyclic water tank 9 in cover 4, is provided with communicating pipe 10, the communicating pipe between granulation on collecting tank 5
10 are connected with cyclic water tank 9, and the dry load 6 is arranged at 1 top exit of urea prilling tower outer housing, in dry load
Dust absorbing spray head 7 and lower dust absorbing spray head 8 are respectively arranged with above and below in the of 6, the dust Flushing nozzle 14 is set
It sets in urea prilling tower outer housing 1 below tower top blower 3, cleaning circulation pump 11 and dust flushing pump 15 are separately positioned on granulation
Between in cover 4, the water inlet end of cleaning circulation pump 11 is connected with by connecting tube 16 with cyclic water tank 9 respectively, cleaning circulation pump 1
Water outlet be connected respectively with upper dust absorbing spray head 7 and lower dust absorbing spray head 8, the water outlet of dust flushing pump 15 and dust
Flushing nozzle 14 is connected.
It further include You Shi electric precipitation mechanism, the wet electric precipitation is by anode tube 12 and yin as further technical solution
Polar curve 13 is constituted, several anode tubes 12 be uniformly arranged in urea prilling tower outer housing 1 vertically dust Flushing nozzle 14 with it is upper
Between dust absorbing spray head 7, it is provided with cathode line 13 in each anode tube 12, is loaded in anode tube 12 and cathode line 13
DC high-voltage.
When the utility model at work, in urea prilling tower outer housing 1, equipped with urea granulation sprayer 2 in granulation process
In, a part of carbamide dust and urea particle are generated, urea particle is during decline, by the next cold air of plain granulation tower tower bottom
Cooling, cold air and urea particle mass heat transfer become hot-air, entrainment of carbamide dust in hot gas, by covering between being granulated
The channel of surrounding's section of body 4 enters dry load 6 and is absorbed, and is led to the cleaning solution in circulating slot by cleaning circulation pump 11
It crosses dust absorbing spray head 7 and lower dust absorbing spray head 8 and spray-absorption is carried out to the carbamide dust in ascending air, absorption is filled out
Material 6 dissolves and absorbs its most dust, and the absorbent solution after spray-absorption is collected through collecting tank 5, after collection
Solution flow in cyclic water tank 9 through communicating pipe 10, then sent again by cleaning circulation pump 11 to dust absorbing spray head 7 and lower dust
Spray head 8 is absorbed to be collected dust by the absorbent solution of cyclic absorption.
Still containing a small amount of dust in the granulation tower tail gas risen after washing spray, the anode being located above is entered
In pipe 12 and cathode line 13, between anode tube 12 and cathode line 13 under the action of strong electrical field, air generates ionization, to generate
A large amount of positive and negative particle, the dust and drop droplet that the gas risen from dry load 6 is carried secretly, with these positive and negative particles collide and
Electrically charged, electrification dust, drop, droplet are enriched with to anode tube 12, and such dust, droplet, drop are just in 12 inner wall quilt of anode tube
It collects, the dust, drop, droplet in wet electric precipitation are collected by further absorb, the dust Flushing nozzle 14 being positioned above
The dust, drop, the droplet that are located at 12 inner wall of anode tube are washed away.
The technical solution of the utility model effectively overcomes washing to spray, increase in wet electric precipitation using forced ventilation mode
The resistance added, tower top blower 3 can be negative according to urea prilling tower in different seasons using the adjustable air volume blower of frequency control
Lotus and environment temperature adjust intake, achieve the effect that maximum energy-saving is run.
The above, the only preferable possible embodiments of the utility model, are not intended to limit the utility model
Range.
Claims (2)
1. a kind of urea prilling tower dust recycling and tail gas environment protection treating device, including urea prilling tower outer housing, carbamide granulation
Spray head and tower top blower, the urea granulation sprayer are arranged in urea prilling tower outer housing, and several tower top blowers are uniformly distributed
It is separately positioned on urea prilling tower outer housing top exit, which is characterized in that further include washing spraying mechanism, the water washing spray
Mechanism is drenched to be sprayed by cover, collecting tank, dry load, dust Flushing nozzle, upper dust absorbing spray head, lower dust absorbing between being granulated
Head, cyclic water tank, communicating pipe, dust flushing pump and cleaning circulation pump are constituted, and cover spiral-lock is sprayed in carbamide granulation between the granulation
On head, the collecting tank is arranged between the granulation below urea prilling tower outer housing top exit on covering on top, cyclic water tank
Setting in cover, is provided with communicating pipe between granulation on collecting tank, be connected with cyclic water tank the communicating pipe, the absorption is filled out
Material is arranged at urea prilling tower outer housing top exit, and upper dust absorbing is respectively arranged with above and below dry load
Spray head and lower dust absorbing spray head, the dust Flushing nozzle setting below tower top blower, are washed in urea prilling tower outer housing
It washs circulating pump and dust flushing pump is separately positioned between being granulated in cover, the water inlet end of cleaning circulation pump and dust flushing pump is distinguished
Be connected by connecting tube with cyclic water tank, the water outlet of cleaning circulation pump respectively with upper dust Flushing nozzle and lower dust absorbing
Spray head is connected, and the water outlet of dust flushing pump is connected with dust Flushing nozzle.
2. urea prilling tower dust recycling according to claim 1 and tail gas environment protection treating device, which is characterized in that including
You Shi electric precipitation mechanism, the wet electric precipitation are made of anode tube and cathode line, several anode tubes are uniformly arranged on urine vertically
In plain granulation tower outer housing between dust Flushing nozzle and upper dust absorbing spray head, it is provided with cathode line in each anode tube,
DC high-voltage is loaded in anode tube and cathode line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821864115.5U CN209423238U (en) | 2018-11-13 | 2018-11-13 | The recycling of urea prilling tower dust and tail gas environment protection treating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821864115.5U CN209423238U (en) | 2018-11-13 | 2018-11-13 | The recycling of urea prilling tower dust and tail gas environment protection treating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209423238U true CN209423238U (en) | 2019-09-24 |
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ID=67968475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821864115.5U Active CN209423238U (en) | 2018-11-13 | 2018-11-13 | The recycling of urea prilling tower dust and tail gas environment protection treating device |
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| CN (1) | CN209423238U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111085144A (en) * | 2019-12-31 | 2020-05-01 | 安徽六国化工股份有限公司 | Tail gas treatment device for urea prilling tower |
| CN111617576A (en) * | 2020-04-26 | 2020-09-04 | 江苏丰尚智能科技有限公司 | Curing equipment discharges processing apparatus |
-
2018
- 2018-11-13 CN CN201821864115.5U patent/CN209423238U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111085144A (en) * | 2019-12-31 | 2020-05-01 | 安徽六国化工股份有限公司 | Tail gas treatment device for urea prilling tower |
| CN111617576A (en) * | 2020-04-26 | 2020-09-04 | 江苏丰尚智能科技有限公司 | Curing equipment discharges processing apparatus |
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