CN109173605B - Sleeve type collector for urea hydrolysis waste gas - Google Patents
Sleeve type collector for urea hydrolysis waste gas Download PDFInfo
- Publication number
- CN109173605B CN109173605B CN201811051578.4A CN201811051578A CN109173605B CN 109173605 B CN109173605 B CN 109173605B CN 201811051578 A CN201811051578 A CN 201811051578A CN 109173605 B CN109173605 B CN 109173605B
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- Prior art keywords
- cylinder body
- collector
- round holes
- outer cylinder
- inner cylinder
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- 230000007062 hydrolysis Effects 0.000 title claims abstract description 28
- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 28
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000004202 carbamide Substances 0.000 title claims abstract description 26
- 239000002912 waste gas Substances 0.000 title claims abstract description 19
- 239000002351 wastewater Substances 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 10
- 239000007921 spray Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 9
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a urea hydrolysis waste gas sleeve type collector, which comprises: the collector is transversely placed in the wastewater tank and is positioned below the liquid level, the collector comprises an inner cylinder body and an outer cylinder body which are coaxially arranged, a circular cavity is formed between the inner cylinder body and the outer cylinder body, a plurality of first round holes are uniformly formed in the inner cylinder body, a plurality of second round holes are uniformly formed in the outer cylinder body, and the first round holes and the second round holes at the same section of the inner cylinder body and the outer cylinder body are staggered; an air intake pipe, one end of which is communicated with the collector, and the other end of which is connected to urea hydrolysis waste gas. The beneficial effects of the invention are as follows: the hydrolysis waste gas is discharged to a waste water tank to realize absorption, or the existing waste water tank is utilized to realize absorption of the hydrolysis waste gas; the device has the advantages of small volume, flexible utilization, no need of adding new equipment, no influence on the height of a building, and capability of realizing spray absorption.
Description
Technical Field
The invention relates to the technical field of urea hydrolysis gas absorption, in particular to a sleeve type collector for urea hydrolysis waste gas.
Background
The flue gas denitration is a technology for removing harmful substances NO X contained in flue gas after high-temperature combustion, and comprises two main technical categories of SCR and SNCR, wherein SCR is a main technology of flue gas denitration. The SCR technology is to install an SCR reactor between a boiler economizer and an air preheater, install a catalyst in the reactor, inject a reducing agent (ammonia-containing gas) into the section of the flue before the reactor, and react the reducing agent with NO X on the surface of the catalyst to remove NO X.
In the denitration reaction process, ammonia is used as a reducing agent to react with NO X so as to achieve the denitration purpose. The denitration reducing agent mainly comprises liquid ammonia, ammonia water and urea. At present, the technology for preparing ammonia from urea mainly comprises two types: urea pyrolysis and urea hydrolysis processes. In the urea hydrolysis process, the waste gas produced by the urea hydrolyzer is mainly ammonia gas mixture. The traditional process utilizes a spray tower to absorb ammonia gas into ammonia water, and the ammonia water is conveyed to a chemical water treatment workshop through a wastewater pump. This approach requires higher spray towers and thus increases building height, which also results in increased maintenance work on the equipment.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a sleeve-type collector for urea hydrolysis waste gas, which discharges the hydrolysis waste gas to a waste water tank to realize absorption, or utilizes the existing waste water tank to realize absorption of the hydrolysis waste gas.
The invention provides a urea hydrolysis waste gas sleeve type collector, which comprises:
The collector is transversely placed in the wastewater tank and is positioned below the liquid level, the collector comprises an inner cylinder body and an outer cylinder body which are coaxially arranged, a circular cavity is formed between the inner cylinder body and the outer cylinder body, a plurality of first round holes are uniformly formed in the inner cylinder body, a plurality of second round holes are uniformly formed in the outer cylinder body, and the first round holes and the second round holes at the same section of the inner cylinder body and the outer cylinder body are staggered;
an air intake pipe, one end of which is communicated with the collector, and the other end of which is connected to urea hydrolysis waste gas.
As a further improvement of the present invention, the apertures of the first circular hole and the second circular hole are not equal.
As a further improvement of the invention, at the same section, 4 first round holes are uniformly formed in the inner cylinder, 4 second round holes are uniformly formed in the outer cylinder, and an included angle a between the first round holes and the second round holes is 45 degrees.
As a further improvement of the invention, one end of the air inlet pipeline is communicated with the middle part of the collector.
As a further improvement of the invention, one end of the air inlet pipeline penetrates through the middle part of the outer cylinder body and is in sealing contact with the middle part of the inner cylinder body.
As a further development of the invention, the inlet conduit comprises a horizontal section communicating with the urea-hydrolyzing exhaust gas, a vertical section communicating with the collector, and a curved section communicating the horizontal section and the vertical section.
As a further improvement of the invention, the two ends of the inner cylinder body and the outer cylinder body are fixedly connected with the fixed cover.
The beneficial effects of the invention are as follows:
The hydrolysis waste gas is discharged to a waste water tank to realize absorption, or the existing waste water tank is utilized to realize absorption of the hydrolysis waste gas;
The device has the advantages of small volume, flexible utilization, no need of adding new equipment, no influence on the height of a building, and capability of realizing spray absorption.
Drawings
FIG. 1 is a schematic view of a urea hydrolysis exhaust sleeve collector according to an embodiment of the present invention;
fig. 2 is a view in the direction a of fig. 1.
In the drawing the view of the figure,
1. A wastewater tank; 2. an air intake duct; 3. a collector; 4. an inner cylinder; 5. an outer cylinder; 6. a first round hole; 7. a second round hole; 8. and fixing the cover.
Detailed Description
The invention will now be described in further detail with reference to specific examples thereof in connection with the accompanying drawings.
As shown in fig. 1-2, a sleeve-type collector for urea hydrolysis waste gas according to an embodiment of the present invention includes: a collector 3 and an air intake duct 2. The collector 3 is transversely placed inside the wastewater tank 1 and is located below the liquid level, the collector 3 comprises an inner cylinder 4 and an outer cylinder 5 which are coaxially arranged, a circular cavity is formed between the inner cylinder 4 and the outer cylinder 5, a plurality of first round holes 6 are uniformly formed in the inner cylinder 4, a plurality of second round holes 7 are uniformly formed in the outer cylinder 5, and the first round holes 6 and the second round holes 7 at the same section of the inner cylinder 4 and the outer cylinder 5 are staggered. The air inlet pipe 2 is connected with the collector 3 at one end and connected with urea hydrolysis waste gas at the other end.
The exhaust gas enters the collector 3 through the air inlet pipe 2, flows in a cavity formed between the inner cylinder 4 and the outer cylinder 5, and is absorbed by the contacted waste water. The first round holes 6 at one section of the inner cylinder body 4 are mutually provided with phase differences, the second round holes 7 at one section of the outer cylinder body 5 are mutually provided with phase differences, the first round holes 6 and the second round holes 7 which are staggered at the same section are provided with phase differences, so that the gas can rapidly enter the collector 3, and meanwhile, the phase differences of the total horizontal force and the total vertical force are ensured when the gas impacts the collector 3, so that the total horizontal force and the total vertical force can not reach peaks or valleys at the same time, the gas entering is more facilitated, meanwhile, the two phase difference holes (for example, the two first round holes 6) can not generate mutual interference of the gas when the gas enters at the same time, thereby improving the working efficiency, and ensuring that the inside of the collector 3 is not influenced by the gas reserved in a pipe.
Further, the apertures of the first round hole 6 and the second round hole 7 are unequal, so that the flow of gas in the cavity is accelerated, and the gas is prevented from interfering between the inner cylinder 4 and the outer cylinder 5.
In this embodiment, at the same section, 4 first round holes 6 are uniformly formed in the inner cylinder 4, 4 second round holes 7 are uniformly formed in the outer cylinder 5, and an included angle a between the first round holes 6 and the second round holes 7 is 45 °. The phase difference of the 4 first round holes 6 is 90 degrees respectively, the phase difference of the 4 second round holes 7 is 90 degrees respectively, the phase difference between the adjacent first round holes 6 and the second round holes 7 is 45 degrees, and the arrangement of different phase differences is also in order to ensure the circulation of gas so as to be beneficial to the absorption of the gas by waste water.
Further, one end of the air inlet pipe 2 is connected to the middle of the collector 3, so as to ensure that the air generates uniform air pressure to the collector 3, so that the air can be uniformly dispersed from the middle to the periphery. In order to make the gas flow uniformly in the cavity, one end of the air inlet pipeline 2 penetrates through the middle part of the outer cylinder 5 and is in sealing contact with the middle part of the inner cylinder 4.
In this embodiment, the intake duct 2 comprises a horizontal section communicating with the urea-hydrolyzing exhaust gas, a vertical section communicating with the collector 3, and a curved section communicating the horizontal section and the vertical section.
Further, in order to ensure the fixation of the inner cylinder 4 and the outer cylinder 5 and the sealing of the ends, both ends of the inner cylinder 4 and the outer cylinder 5 are fixedly connected through the fixing cover 8.
In order to prolong the service life of the collector 3 and avoid the corrosion of waste gas and waste water, the collector 3 is made of stainless steel.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A urea hydrolysis exhaust sleeve collector, comprising:
The collector (3) is transversely placed in the wastewater tank (1) and is positioned below the liquid level, the collector (3) comprises an inner cylinder body (4) and an outer cylinder body (5) which are coaxially arranged, a circular cavity is formed between the inner cylinder body (4) and the outer cylinder body (5), a plurality of first round holes (6) are uniformly formed in the inner cylinder body (4), a plurality of second round holes (7) are uniformly formed in the outer cylinder body (5), and the first round holes (6) and the second round holes (7) at the same section of the inner cylinder body (4) and the outer cylinder body (5) are staggered;
An air inlet pipe (2) one end of which is communicated with the collector (3) and the other end of which is connected to urea hydrolysis waste gas;
an included angle a between the first round hole (6) and the second round hole (7) is 45 degrees;
One end of the air inlet pipeline (2) penetrates through the middle of the outer cylinder body (5) and is in sealing contact with the middle of the inner cylinder body (4).
2. A urea hydrolysis exhaust gas sleeve collector according to claim 1, characterized in that the apertures of the first circular aperture (6) and the second circular aperture (7) are not equal.
3. The urea hydrolysis exhaust gas sleeve type collector according to claim 1, wherein 4 first round holes (6) are uniformly formed in the inner cylinder (4) at the same section, and 4 second round holes (7) are uniformly formed in the outer cylinder (5).
4. A urea hydrolysis exhaust gas sleeve collector according to claim 1, characterized in that the inlet conduit (2) is connected at one end to the middle of the collector (3).
5. The urea hydrolysis exhaust gas sleeve collector according to claim 1, characterized in that the inlet conduit (2) comprises a horizontal section communicating with urea hydrolysis exhaust gas, a vertical section communicating with the collector (3), and a curved section communicating the horizontal section and the vertical section.
6. The urea hydrolysis exhaust gas sleeve collector according to claim 1, characterized in that both ends of the inner cylinder (4) and the outer cylinder (5) are fixedly connected with a fixed cover (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051578.4A CN109173605B (en) | 2018-09-10 | 2018-09-10 | Sleeve type collector for urea hydrolysis waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051578.4A CN109173605B (en) | 2018-09-10 | 2018-09-10 | Sleeve type collector for urea hydrolysis waste gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109173605A CN109173605A (en) | 2019-01-11 |
| CN109173605B true CN109173605B (en) | 2024-06-04 |
Family
ID=64915727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811051578.4A Active CN109173605B (en) | 2018-09-10 | 2018-09-10 | Sleeve type collector for urea hydrolysis waste gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109173605B (en) |
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| CN202823102U (en) * | 2012-08-07 | 2013-03-27 | 安徽三星化工有限责任公司 | Urea offgas ammonia recovery device |
| CN203075792U (en) * | 2013-02-07 | 2013-07-24 | 陕西理工学院 | Indoor air purifying device |
| CN103961992A (en) * | 2014-05-13 | 2014-08-06 | 陈有添 | Air purification device |
| CN206837818U (en) * | 2017-06-14 | 2018-01-05 | 洛阳格林环保工程有限公司 | A kind of novel oxidized air sparger for desulfurizing tower |
| CN207254121U (en) * | 2017-05-24 | 2018-04-20 | 天津华迈环保设备有限公司 | A kind of more concentration coal mine gas mixing devices |
| CN209317382U (en) * | 2018-09-10 | 2019-08-30 | 大唐环境产业集团股份有限公司 | A kind of hydrolysis of urea exhaust jacket eartridge collector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2696222C (en) * | 2010-03-09 | 2016-01-05 | Gary Schreiner | Grain aeration system |
| TWI599395B (en) * | 2015-11-26 | 2017-09-21 | Orient Service Co Ltd | Method and device for purifying fluoride in semiconductor process exhaust gas |
-
2018
- 2018-09-10 CN CN201811051578.4A patent/CN109173605B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000042328A (en) * | 1998-07-31 | 2000-02-15 | Image Seed:Kk | Air dust collector |
| JP2001280114A (en) * | 2000-03-30 | 2001-10-10 | Chuo Motor Wheel Co Ltd | Muffler |
| KR20060010868A (en) * | 2006-01-17 | 2006-02-02 | 한상관 | Building new construction method that removes the toxicity of buildings by using physical methods that act to remove or neutralize the toxicity of cement |
| CN102059013A (en) * | 2010-11-19 | 2011-05-18 | 北京京诚科林环保科技有限公司 | Blast furnace slag flushing water filter |
| CN202823102U (en) * | 2012-08-07 | 2013-03-27 | 安徽三星化工有限责任公司 | Urea offgas ammonia recovery device |
| CN203075792U (en) * | 2013-02-07 | 2013-07-24 | 陕西理工学院 | Indoor air purifying device |
| CN103961992A (en) * | 2014-05-13 | 2014-08-06 | 陈有添 | Air purification device |
| CN207254121U (en) * | 2017-05-24 | 2018-04-20 | 天津华迈环保设备有限公司 | A kind of more concentration coal mine gas mixing devices |
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| Publication number | Publication date |
|---|---|
| CN109173605A (en) | 2019-01-11 |
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