CN201744278U - Tail gas filtration washing absorber for urea prilling tower - Google Patents
Tail gas filtration washing absorber for urea prilling tower Download PDFInfo
- Publication number
- CN201744278U CN201744278U CN2010202996527U CN201020299652U CN201744278U CN 201744278 U CN201744278 U CN 201744278U CN 2010202996527 U CN2010202996527 U CN 2010202996527U CN 201020299652 U CN201020299652 U CN 201020299652U CN 201744278 U CN201744278 U CN 201744278U
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- China
- Prior art keywords
- tail gas
- pipe
- fixed head
- washing absorber
- gas filtering
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Abstract
The utility model discloses a tail gas filtration washing absorber for a urea prilling tower. A recovery tank is additionally arranged at the top end of a prilling tower; a tank bottom is arranged at the bottom end of the recovery tank; an air exhaust port is formed in the middle of the tank bottom; a receiving tray is arranged at the bottom end of the air exhaust port; a down comer is arranged on the right side of the tray bottom; a filter is arranged at the bottom end of the down comer; a circulating pump is arranged on the right side of the filter; a water outlet pipe is arranged at the upper end of the circulating pump; a water outlet is formed on the water outlet pipe; a fixing plate is arranged at the upper end of the tank body; a tail gas filtration washing absorber is arranged on the fixing plate; a stainless steel dust collection pipe is arranged at the upper part of the tail gas filtration washing absorber; a dust collection barrel is arranged at the bottom end of the dust collection pipe; a water absorption barrel is bundled on the wall of an external threaded pipe at the lower end of the dust collection pipe via a hoop; a primary purifying chamber is arranged from the receiving tray to the air exhaust port; a secondary purifying chamber is arranged at the bottom end of a filtration washing absorber at the tank bottom; and a liquid storage tank is formed at the upper end of the fixing plate.
Description
Technical field:
The utility model relates to a kind of urea fertilizer granulation tower gas emission device, definite a kind of granulation tower tail gas filtering washing absorption plant of saying so.
Background technology:
At present, the urea prilling tower that uses in the chemical fertilizer industry, the tail gas that produces during work directly enter in the atmosphere, are carrying a large amount of carbamide dusts and ammonia in the tail gas secretly and are being thrown in the air, not only cause great waste, but also environment is polluted.
Summary of the invention:
The purpose of this utility model provides a kind of tail gas filtering washing absorption plant, to solve conventional urea prilling tower waste resource, contaminated environment, the defective of harm surface structures and crops.
Scheme of the present utility model is to set up a recycling can on the top of granulation tower, recycling can is by tank body, the jar end, take-up reel, fixed head and tail gas filtering washing absorber are formed, its design feature is at the bottom of the bottom of tank body is provided with jar, the middle part at the jar end is provided with exhaust outlet, the bottom of exhaust outlet is provided with take-up reel, take-up reel is a dish shape dish, the right side of trying to get to the heart of a matter is provided with down the liquid pipe, the bottom of following liquid pipe is provided with filter, the right side of filter is provided with circulating pump, the upper end of circulating pump is provided with outlet pipe, outlet pipe is provided with delivery port, the upper end of tank body is provided with fixed head, connecting hole gathers on the fixed head, be provided with tail gas filtering washing absorber in the connecting hole, described tail gas filtering washing absorber top is provided with the stainless steel sweep-up pipe, the upper end of stainless steel sweep-up pipe is by passing in the connecting hole, its outer wall is welded on the fixed head, the bottom of sweep-up pipe is provided with external screw thread, externally threaded circumferential inner wall is provided with the inlet opening, and outer wall is provided with intake chamber, and the bottom of sweep-up pipe is provided with dust-absorbing tube, dust-absorbing tube is made as the netted tube of water imbibition by absorbent material, and the suction tube is banded on the external screw thread tube wall of sweep-up pipe lower end by pricking hoop.Take-up reel is to being provided with the primary purifying chamber between the exhaust outlet, the bottom of jar end filtration washing absorber is provided with the secondary stage purified chamber, is provided with reservoir in the upper end of fixed head.
Enter the primary purifying chamber from carbamide granulation top of tower tail gas discharged during work, oarse-grained carbamide dust drops in the primary purifying chamber, tail gas continues to rise to circumference and diffuses into the secondary stage purified chamber, and the secondary clean room cross section of giving vent to anger is give vent to anger 2 times of cross section of primary purifying chamber approximately.At this moment tail gas flow velocity will subtract doppio lunghezza di tempo, drop under the part dust in the secondary stage purified chamber, tail gas continues to rise again, disperse tail gas filtering washing absorber by gathering, part tail gas can enter into inside by the outside that tail gas filtering washs absorber bottom nethike embrane, play filtration to tail gas, the dust of filtration in the nethike embrane outside, tail gas filtering washing absorber bottom contacts with water under its outside and obtains the dissolving washing, remaining part tail gas also enters inside by the import of tail gas filtering washing absorber bottom, two parts tail gas mix with top along the inwall eddy flow and under the water counter current contacting thoroughly carry out having carried out heat and mass to the dissolving of dust washing with to the absorption of ammonia.Gas by tail gas filtering washing absorber reaches national exhaust emission standard fully, can be drained in the atmosphere.Dissolved and continued down stream after carbamide dust forms the low aqueous solution of concentration with the water that has absorbed ammonia, contact with dust in the secondary stage purified chamber and to dissolve, flow into the primary purifying chamber again, the dust contact lysis with the there, just obtain the higher about 18-20% urea liquid of concentration, enter Urea Evaporation System and make finished product through the following liquid pipe filter of flowing through.Can enter circulating pump granulation tower under by pipeline if concentration is low, enter tail gas filtering washing absorber reservoir by pipeline, enter tail gas filtering washing absorber again and form the circulation recovery through pressurization.Can mend into quantitative water at the water inlet of circulating pump with the urea wastewater that certain pressure is arranged during moisturizing.
The utility model is simple in structure, and is reasonable in design, easy to operate, and stable work in work reclaims thoroughly.
Description of drawings
Be described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model structural representation;
Fig. 2 is tail gas filtering washing absorber schematic diagram;
Fig. 3 is the inside and outside wall inlet opening of tail gas filtering washing absorber schematic diagram;
Fig. 4 is the utility model plan structure schematic diagram.
The specific embodiment
Tank body 1 shown in Fig. 1 is arranged on the top of granulation tower, at the bottom of the bottom of tank body is provided with jar 9, the middle part at the jar end is provided with exhaust outlet 11, the bottom of exhaust outlet is provided with take-up reel 12, the right side of take-up reel is provided with down the liquid pipe, the bottom of following liquid pipe is provided with filter 8, the right side of filter is provided with circulating pump 7, and the upper end of circulating pump is provided with outlet pipe 6, and the upper end of outlet pipe is provided with delivery port 5, the upper end of tank body is provided with fixed head 2, fixed head is provided with connecting hole, is provided with tail gas filtering washing absorber 3 in the connecting hole, and the upper end of take-up reel is provided with primary purifying chamber 13, the upper end at the jar end is provided with secondary stage purified chamber 10 to the bottom of filtration washing absorber, and the upper end of fixed head is provided with reservoir 4.
The top of the tail gas filtering washing absorber 3 shown in Fig. 2-4 is provided with the stainless steel sweep-up pipe, the stainless steel sweep-up pipe is by passing in the fixed head connecting hole, its outer wall is welded in the fixed head connecting hole, the bottom of sweep-up pipe is provided with external screw thread 17, externally threaded outer circumferential walls is provided with intake chamber 19, inwall is provided with inlet opening 18, the bottom of sweep-up pipe is provided with dust-absorbing tube 15, dust-absorbing tube is by pricking the bottom that hoop 14 is fastened on sweep-up pipe, intake chamber 19 and inlet opening 18 are along on the tangent outer wall and inwall that is arranged on dust-absorbing tube uniformly of circumference level, and the bottom of dust-absorbing tube is provided with bracing ring 16.
Claims (3)
1. a urea prilling tower tail gas filtering washs absorption plant, by recycling can, take-up reel, fixed head and tail gas filtering washing absorber are formed, it is characterized in that: described tank body (1) is arranged on the top of granulation tower, at the bottom of the bottom of tank body is provided with jar (9), the middle part at the jar end is provided with exhaust outlet (11), the bottom of exhaust outlet is provided with take-up reel (12), the right side of take-up reel is provided with down the liquid pipe, the bottom of following liquid pipe is provided with filter (8), the right side of filter is provided with circulating pump (7), the upper end of circulating pump is provided with outlet pipe (6), the upper end of outlet pipe is provided with delivery port (5), the upper end of tank body is provided with fixed head (2), fixed head is provided with connecting hole, is provided with tail gas filtering washing absorber (3) in the connecting hole, and the upper end of take-up reel is provided with primary purifying chamber (13), the upper end at the jar end is provided with secondary stage purified chamber (10) to the bottom of filtration washing absorber, and the upper end of fixed head is provided with reservoir (4).
2. urea prilling tower tail gas filtering washing absorption plant according to claim 1, it is characterized in that: the top of described tail gas filtering washing absorber (3) is provided with the stainless steel sweep-up pipe, the stainless steel sweep-up pipe is by passing in the fixed head connecting hole, its outer wall is welded in the fixed head connecting hole, the bottom of sweep-up pipe is provided with external screw thread (17), externally threaded outer circumferential walls is provided with intake chamber (19), inwall is provided with inlet opening (18), the bottom of sweep-up pipe is provided with dust-absorbing tube (15), and dust-absorbing tube is by pricking the bottom that hoop (14) is fastened on sweep-up pipe.
3. urea prilling tower tail gas filtering washing absorption plant according to claim 1 and 2, it is characterized in that: described intake chamber (19) and inlet opening (18) are along on the tangent outer wall and inwall that is arranged on dust-absorbing tube uniformly of circumference level, and the bottom of dust-absorbing tube is provided with bracing ring (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202996527U CN201744278U (en) | 2010-08-13 | 2010-08-13 | Tail gas filtration washing absorber for urea prilling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202996527U CN201744278U (en) | 2010-08-13 | 2010-08-13 | Tail gas filtration washing absorber for urea prilling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201744278U true CN201744278U (en) | 2011-02-16 |
Family
ID=43578951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202996527U Expired - Fee Related CN201744278U (en) | 2010-08-13 | 2010-08-13 | Tail gas filtration washing absorber for urea prilling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201744278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805990A (en) * | 2012-06-05 | 2012-12-05 | 四川美丰化工股份有限公司 | System for washing and recycling tail gas generated during production of urea |
-
2010
- 2010-08-13 CN CN2010202996527U patent/CN201744278U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805990A (en) * | 2012-06-05 | 2012-12-05 | 四川美丰化工股份有限公司 | System for washing and recycling tail gas generated during production of urea |
| CN102805990B (en) * | 2012-06-05 | 2014-11-12 | 四川美丰化工股份有限公司 | System for washing and recycling tail gas generated during production of urea |
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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: 20110216 Termination date: 20130813 |