CN101905110A - Inlet cooling and spraying system for waste gas absorption tower - Google Patents
Inlet cooling and spraying system for waste gas absorption tower Download PDFInfo
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- CN101905110A CN101905110A CN2009101472193A CN200910147219A CN101905110A CN 101905110 A CN101905110 A CN 101905110A CN 2009101472193 A CN2009101472193 A CN 2009101472193A CN 200910147219 A CN200910147219 A CN 200910147219A CN 101905110 A CN101905110 A CN 101905110A
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- absorption tower
- spray arm
- waste gas
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- temperature
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Abstract
The invention relates to an inlet cooling and spraying system for a waste gas absorption tower. The system comprises a circulating water spraying main pipe and spraying branch pipes, wherein the circulating water spraying main pipe is connected with the bottom of the absorption tower, and the spraying branch pipes are connected with one end of the spraying main pipe; and the spraying branch pipes are arranged in a gas duct in front of the inlet of the absorption tower in parallel, and has adjustable length and two arrangement modes. The invention has the advantages that the inlet cooling and spraying system for the waste gas absorption tower can rapidly carry out spray cooling on high-temperature waste gas (200-500DEG C) contacted with an anticorrosion protective layer at the inlet of the absorption tower and effectively reduce the surface temperature of the anticorrosion protective layer; the protection range is large; the absorption tower and the tower filling are effectively protected from being damaged by high temperature; and the system has stability, reliability, simple operating control and low equipment investment.
Description
Technical field
The present invention relates to spraying cooling system, particularly a kind ofly be used to protect absorption tower inner wall anti-corrosive protective layer and tower internals, be applicable to the cooling and spraying system of severe corrosive waste gas.
Background technology
In Chemical Manufacture or coal burning system,, often adopt the absorption tower to carry out the waste gas environmental protection treatment for guaranteeing the waste gas qualified discharge.According to the absorption tower designing requirement, the waste gas that enters the absorption tower must satisfy certain condition, especially will satisfy the uniform temperature condition, can not damage corrosion protective covering and other attached tower internals of inside, absorption tower.Especially when handling severe corrosive flue gas or waste gas, if can reduce gas temperature rapidly and admission line and absorption tower are formed effective protection, can avoid adopting expensive special material, thereby reduce the investment of equipment, also can reduce operating cost.
For example when using glass flake as the absorption tower of corrosion protective covering; because the serviceability temperature of glass flake is limited in smaller or equal to 130 ℃; therefore must form effective protection to glass flake; perhaps severe corrosive waste gas must cool rapidly to usable temp before feeding the absorption tower; come thus the absorption tower is protected, otherwise will damage the equipment and the tower internals of absorption tower corrosion protective covering and other non-refractories.
Publication number is to mention a kind of fume automatic ventilated spraying system that is used for the absorption tower in the patent application of CN101164666A, and this system comprises: spray subsystem and RACS.The spray subsystem comprises: the accident cooling water tank that is used for retaining; The female pipe of the spray that one end is connected with the accident cooling water tank, this sprays female pipe and has at least one automatic valve; With the spray equipment that the other end of the female pipe of spray links to each other, this spray equipment is arranged in the preceding flue of absorption tower inlet, and a plurality of nozzles are arranged.RACS comprises: the sensing device that detects the flue gas state in the preceding flue of absorption tower inlet; With the control device that links to each other with sensing device, can control the automatic valve that sprays on female pipe according to the signal that sensing device sends.Though this system can spray cooling to high-temperature flue gas automatically fast in the porch, absorption tower, the guard space adjustable range is little, and system's water consumption is big.
Summary of the invention
For admission line corrosion protective covering and tower internals are effectively protected, the present invention proposes at the absorption tower inlet waste gas cooling spray equipment is set.In addition, for ease of the absorption tower stable operation, also require spray equipment to regulate spray flux according to the exhaust gas condition of porch, absorption tower.
The inlet cooling and spraying system for waste gas absorption tower that is used for of the present invention, mainly comprise: with the female pipe of recirculated water spray that is connected at the bottom of the absorption Tata, with the spray arm that an end of the female pipe of spray links to each other, this spray arm is parallel to be installed in the preceding flue of absorption tower inlet, and adjustable length.
In the preferred embodiments of the present invention, above-mentioned spray arm and adjustable length parallel with the exhaust inlet pipe road greatly also can be regulated arbitrarily the protection domain of corrosion protective covering, effectively controls the corrosion protective covering surface temperature.
In the preferred embodiments of the present invention, above-mentioned spray arm is with the tubulation arranged in form; Evenly punch on the spray arm or the installation nozzle.
In the preferred embodiments of the present invention, evenly punch or the installation nozzle with the spacing of 100-800mm on the above-mentioned spray arm; More preferably, evenly punch or the installation nozzle with the spacing of 150-200mm.
In the preferred embodiments of the present invention, above-mentioned spray arm is with the single tube arranged in form; Determining deviation punching or installation swivel nozzle on the spray arm.
In the preferred embodiments of the present invention, punch or the installation swivel nozzle with the 100-800mm spacing on the above-mentioned spray arm; More preferably, with punching of 300-400mm spacing or installation swivel nozzle.
The inlet cooling and spraying system for waste gas absorption tower that is used for of the present invention, the water smoke of this system ejection and the equidistant protective effect of corrosion protective covering is strong, the scope of application is wide, cooling-down effect is remarkable.Allowing the air inlet scope of high-temp waste gas is 200-500 ℃.
The invention has the advantages that; inlet cooling and spraying system for waste gas absorption tower can spray cooling to high temperature strong corrosion waste gas fast in the porch, absorption tower; guarantee that the absorption tower inlet temperature is in allowed band; and adjustable length; protection domain is big; resistance to inlet gas is little, and admission line and absorption tower corrosion protective covering and tower internals are effectively protected.The scale clay is moulded, served as a contrast to carbon steel piping lining and the protective effect of Ta Nei plastic filler is effective greatly, allow to use nonmetal admission line, tower body and tower internals also can adopt non-metallic material, reduce equipment investment.
The spray arm that the present invention adopts adopts the scheme that is arranged in parallel with admission line, has reduced vapour lock, can adjust the shower water consumption on a large scale, when strengthening the protection effect, has improved operating flexibility.Permission is under the situation that does not reduce water temperature, and performance is effect well.
System stability is reliable, and operation control is simple, has reduced equipment investment and has saved energy consumption.
The inlet cooling and spraying system for waste gas absorption tower that is used for of the present invention can be used in other high temperature runners that need fast cooling.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the inlet cooling and spraying system for waste gas absorption tower structural representation that is used for of the present invention;
Fig. 2 A and Fig. 2 B are spray arm and structure of nozzle layout drawing in the spray system shown in Figure 1.
The specific embodiment
Below, embodiments of the present invention are described with reference to the accompanying drawings.
At the inlet cooling and spraying system for waste gas absorption tower that is used for of the present invention, described waste gas cooling and spraying system comprises: with the female pipe of recirculated water spray that is connected at the bottom of the absorption Tata, the spray arm that links to each other with the other end of the female pipe of spray, this arm is installed in the preceding flue of absorption tower inlet, and two kinds of arrangement forms are arranged.
Shown in accompanying drawing 1 and accompanying drawing 2A, 2B, spray system has: 1 absorption tower, 2 filters, 3 centrifugal pumps, 4 heat exchangers, shower nozzle in 5 demisters, 6 towers, the female pipe of 7 sprays, 8 spray arms, 9 control valves (control flow), 10 control valves (control liquid level)
Shown in accompanying drawing 2A, 2B, the spray arm has two kinds of arrangement forms.1. shown in Fig. 2 A, with tubulation form arrange spray arm, evenly punching thereon.The spray arm can according to circumstances be set to different length, evenly punches or the installation nozzle with the spacing of 100-800mm on arm, guarantees that the water smoke that sprays effectively gets final product; 2. shown in Fig. 2 B,, on the spray arm, evenly punch or the installation rotary nozzle with single tube arranged in form spray arm.The spray arm can according to circumstances be set to different length.Punching or rotary nozzle are with the setting that is spaced of 100-800mm, and adjustable angle, guarantee that the water smoke that sprays effectively gets final product.
The flow chart of small-sized analogue means as shown in Figure 1.Wherein flue gas flow is 50m
3/ h, temperature is 420 ℃, contains 0.5% (v/v) hydrochloric acid of having an appointment, about 0.8% (v/v) nitrogen oxide.Plastics Pall ring filler is used on the admission line and the absorption tower of adopting the carbon steel lining to mould.In order to reduce the consumption of shower water, improve the protection effect, and increase adaptability different operating modes.Spray on female water inlet tube pipeline at this heat exchanger is set, and control valve is installed.The coolant-temperature gage of going into of cooling water is 19 ± 0.5 ℃, and the leaving water temperature of cooling water is 35 ± 0.5 ℃.Parallelpiped central axis installation length is 0.5 meter in admission line, the spray arm of form shown in accompanying drawing 2B, and injector spacing is 100mm.System's operation is after 12 hours, and each monitoring point parameter is as follows: 1. smoke inlet pipe road hull-skin temperature is 79 ± 1 ℃; 2. to advance tower center temperature be 89 ± 2 ℃ to flue gas; 3. temperature is 81 ± 1 ℃ in the tower.System works is stable, and total rate of water make-up of 12 hours is 0.25m
3
The flow chart of small-sized analogue means as shown in Figure 1.Wherein flue gas flow is 70m
3/ h, temperature is 350 ℃, contains 0.5% (v/v) hydrochloric acid of having an appointment, about 0.8% (v/v) nitrogen oxide.Adopt the carbon steel lining to mould admission line and absorption tower, use plastics multiaspect hollow ball.In order to reduce the consumption of shower water, improve the protection effect, and increase adaptability different operating modes.Spray on female water inlet tube pipeline at this heat exchanger is set, and control valve is installed.The coolant-temperature gage of going into of cooling water is 21 ± 1 ℃, and the leaving water temperature of cooling water is 32 ± 0.5 ℃.At parallelpiped central axis installation length in the admission line is 0.5 meter, the spray arm of form shown in accompanying drawing 2A, and the spray apertures spacing is 150mm.System's operation is after 18 hours, and each monitoring point parameter is as follows: 1. smoke inlet pipe road hull-skin temperature is 65 ± 1 ℃; 2. to advance tower center temperature be 79 ± 2 ℃ to flue gas; 3. temperature is 72 ± 1 ℃ in the tower.System works is stable, and total rate of water make-up of 18 hours is 0.3m
3
Flow chart as shown in Figure 1.Wherein flue gas flow is 453m
3/ h, temperature is 470 ℃, contains 0.5% (v/v) hydrochloric acid of having an appointment, about 0.8% (v/v) nitrogen oxide.Adopt the carbon steel lining to mould admission line and absorption tower, use plastics Pall ring filler.In order to reduce the consumption of shower water, improve the protection effect, and increase adaptability different operating modes.Spray on female water inlet tube pipeline at this heat exchanger is set, and control valve is installed.The coolant-temperature gage of going into of cooling water is 19 ± 1 ℃, and the leaving water temperature of cooling water is 35 ± 2 ℃.At parallelpiped central axis installation length in the admission line is 0.5 meter, the spray arm of form shown in accompanying drawing 2B, and injector spacing is 300mm.System's operation is after 48 hours, and each monitoring point parameter is as follows: 1. smoke inlet pipe road hull-skin temperature is 48 ± 1 ℃; 2. to advance tower center temperature be 86 ± 3 ℃ to flue gas; 3. temperature is 77 ± 1 ℃ in the tower.System works is stable, and total rate of water make-up of 48 hours is 2.5m
3
Embodiment 4
Flow chart as shown in Figure 1.Wherein flue gas flow is 498m
3/ h, temperature is 500 ℃, contains 0.5% (v/v) hydrochloric acid of having an appointment, about 0.8% (v/v) nitrogen oxide.Adopt the carbon steel lining to mould admission line and absorption tower, use plastics multiaspect hollow ball.In order to reduce the consumption of shower water, improve the protection effect, and increase adaptability different operating modes.Spray on female water inlet tube pipeline at this heat exchanger is set, and control valve is installed.The coolant-temperature gage of going into of cooling water is 23 ± 2 ℃, and the leaving water temperature of cooling water is 38 ± 2 ℃.At parallelpiped central axis installation length in the admission line is that 1.5 meters, form spray arm shown in accompanying drawing 2A, and the spray apertures spacing is 200mm.System's operation is after 72 hours, and each monitoring point parameter is as follows: 1. smoke inlet pipe road hull-skin temperature is 58 ± 1 ℃; 2. to advance tower center temperature be 97 ± 3 ℃ to flue gas; 3. temperature is 80 ± 1 ℃ in the tower.System works is stable, and total rate of water make-up of 72 hours is 4m
3
Embodiment 5
Flow chart as shown in Figure 1.Wherein flue gas flow is 560m
3/ h, temperature is 435 ℃, contains 0.5% (v/v) hydrochloric acid of having an appointment, about 0.8% (v/v) nitrogen oxide.Adopt the carbon steel lining to mould admission line and absorption tower, use plastics Pall ring filler.In order to reduce the consumption of shower water, improve the protection effect, and increase adaptability different operating modes.Spray on female water inlet tube pipeline at this heat exchanger is set, and control valve is installed.The coolant-temperature gage of going into of cooling water is 20 ± 2 ℃, and the leaving water temperature of cooling water is 35 ± 0.5 ℃.At parallelpiped central axis installation length in the admission line is 2 meters, the spray arm of form shown in accompanying drawing 2B, and injector spacing is 400mm.System's operation is after 96 hours, and each monitoring point parameter is as follows: 1. smoke inlet pipe road hull-skin temperature is 57 ± 3 ℃; 2. to advance tower center temperature be 85 ± 1 ℃ to flue gas; 3. temperature is 81 ± 2 ℃ in the tower.System works is stable, and total rate of water make-up of 96 hours is 5.5m
3
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any person of ordinary skill in the field; without departing from the spirit and scope of the invention; when can doing a little change and improvement, so the present invention's protection domain is as the criterion when looking the claim person of defining.
Claims (9)
1. one kind is used for inlet cooling and spraying system for waste gas absorption tower, it is characterized in that comprising: with the female pipe of recirculated water spray that is connected at the bottom of the absorption Tata, with the spray arm that an end of the female pipe of spray links to each other, this spray arm is parallel to be installed in the preceding flue of absorption tower inlet, and adjustable length.
2. system according to claim 1 is characterized in that described spray arm is with the tubulation arranged in form.
3. system according to claim 2 is characterized in that evenly punching on the described spray arm or nozzle being installed.
4. system according to claim 3 is characterized in that evenly punching with the spacing of 100-800mm on the described spray arm or nozzle being installed.
5. system according to claim 4 is characterized in that evenly punching with the spacing of 150-200mm on the described spray arm or nozzle being installed.
6. system according to claim 1 is characterized in that described spray arm is with the single tube arranged in form.
7. system according to claim 6 is characterized in that determining deviation punching or installation swivel nozzle on the described spray arm.
8. system according to claim 7 is characterized in that on the described spray arm with punching of 100-800mm spacing or installation swivel nozzle.
9. system according to claim 8 is characterized in that on the described spray arm with punching of 300-400mm spacing or installation swivel nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101472193A CN101905110A (en) | 2009-06-08 | 2009-06-08 | Inlet cooling and spraying system for waste gas absorption tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101472193A CN101905110A (en) | 2009-06-08 | 2009-06-08 | Inlet cooling and spraying system for waste gas absorption tower |
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| CN101905110A true CN101905110A (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101472193A Pending CN101905110A (en) | 2009-06-08 | 2009-06-08 | Inlet cooling and spraying system for waste gas absorption tower |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436953A (en) * | 2014-11-13 | 2015-03-25 | 中国石油化工股份有限公司 | High-temperature and high-humidity Claus liquid sulfur groove tail gas pretreatment device |
| CN106139780A (en) * | 2016-08-30 | 2016-11-23 | 无锡市兴盛环保设备有限公司 | A kind of spray system for Tower for purifying waste gas |
| CN107998788A (en) * | 2017-12-01 | 2018-05-08 | 杭州东贝机电设备有限公司 | Incinerator exhaust-gas treatment environmental protecting device |
| CN109724429A (en) * | 2018-12-21 | 2019-05-07 | 江苏格陵兰传热科技有限公司 | Heat reclamation energy-saving-type gas cooling device |
-
2009
- 2009-06-08 CN CN2009101472193A patent/CN101905110A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436953A (en) * | 2014-11-13 | 2015-03-25 | 中国石油化工股份有限公司 | High-temperature and high-humidity Claus liquid sulfur groove tail gas pretreatment device |
| CN106139780A (en) * | 2016-08-30 | 2016-11-23 | 无锡市兴盛环保设备有限公司 | A kind of spray system for Tower for purifying waste gas |
| CN107998788A (en) * | 2017-12-01 | 2018-05-08 | 杭州东贝机电设备有限公司 | Incinerator exhaust-gas treatment environmental protecting device |
| CN109724429A (en) * | 2018-12-21 | 2019-05-07 | 江苏格陵兰传热科技有限公司 | Heat reclamation energy-saving-type gas cooling device |
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Application publication date: 20101208 |