CN101655325A - Temperature reduction method for hot gas and device thereof - Google Patents
Temperature reduction method for hot gas and device thereof Download PDFInfo
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- CN101655325A CN101655325A CN200910023945A CN200910023945A CN101655325A CN 101655325 A CN101655325 A CN 101655325A CN 200910023945 A CN200910023945 A CN 200910023945A CN 200910023945 A CN200910023945 A CN 200910023945A CN 101655325 A CN101655325 A CN 101655325A
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Abstract
The invention relates to the technique for cooling hot gas, particularly to a temperature reduction method for hot gas and a device thereof. At present, the method for reducing temperature by sprayingis used widely, which not only increase the composition of hot gas and the volume flow, but also increase the investment of system, with low heat exchange efficiency and difficulty to control the process. The invention comprises a tube bundle heat exchanger canister, an outer jacket of a tube bundle cooler, a light tube heat exchange unit, and a finned tube heat exchange unit. The light tube heatexchange unit and the finned tube heat exchange unit are orderly disposed inside of the tube bundle heat exchanger canister. The outer jacket of a tube bundle cooler is fixedly disposed on the outerwall of the tube bundle heat exchanger canister. The hot gas is cooled by air exchanging heat with recycled cooling water by entering the tube bundle heat exchanger. By adopting the tube bundle heat exchanger, with the outer jacket opening, the invention can efficiently decrease the temperature of the tube bundle heat exchanger, decrease the load of canister, reduce the thickness of the canister,and lower the investment.
Description
Technical field
The present invention relates to the high-temperature gas falling temperature technique, be specifically related to temperature reduction method for hot gas and device thereof.
Background technology
Temperature reduction technology to 800～1300 ℃ high-temp waste gas, using commonplace is spray cooling technology, its primary structure is made up of members such as spray cooling device cylindrical shell, external jacket, sparge pipe, nozzles, in the time of in high-temp waste gas enters the spray cooling device, cooling water directly directly contacts with high-temp waste gas by the nozzle in the spray cooling device, when absorbing the high-temp waste gas heat, become water vapour, discharge together in company with high-temp waste gas, thus the purpose of the waste gas cooling that reaches a high temperature.Cooling water is lowered the temperature to spray cooling device cylindrical shell in the external jacket simultaneously, to guarantee the resistance to elevated temperatures of equipment.This heat sink has not only increased the gas composition and the volume flow of high-temp waste gas, and heat transfer process is wayward, and heat exchange efficiency is low.In addition, to installing high temperature resistant processing and protection quite strict requirement has been proposed also.
Summary of the invention
The temperature reduction method for hot gas and the device thereof that the purpose of this invention is to provide a kind of high efficiency of utilizing recirculated cooling water that high-temperature gas is lowered the temperature, low investment.
Technical scheme of the present invention: high-temp waste gas heat sink, form by tube bundle heat exchanger cylindrical shell, bundled tube cooler external jacket, light pipe heat exchange group, finned tube heat exchange group, the inside of described tube bundle heat exchanger cylindrical shell is equipped with light pipe heat exchange group and finned tube heat exchange group successively, and bundled tube cooler external jacket is fixedly mounted on the outer wall of tube bundle heat exchanger cylindrical shell.
Described light pipe heat exchange group and finned tube heat exchange component are not made up of water inlet pipe, manhole blind flange, water inlet header tank, inlet distribution plate, tube sheet, heat exchanger tube, header tank dividing plate, water outlet header tank, outlet pipe.
Described water inlet pipe, outlet pipe and header tank dividing plate are fixed on the manhole blind flange, and water inlet header tank and water outlet header tank are made of manhole blind flange, header tank dividing plate and tube sheet, and the inlet distribution plate is fixed on in the water header tank, and heat exchanger tube is fixed on the tube sheet.
Described tube bundle heat exchanger cylindrical shell is a cylindrical shape.
Described light pipe heat exchange group and finned tube heat exchange group are annular heat exchanger tube.
Temperature reduction method for hot gas, 800～1300 ℃ high-temp waste gas enters in the bundled tube cooler, successively by 3 groups of light pipe heat exchange groups and 6 groups of finned tube heat exchange groups, by the recirculated cooling water in the heat exchanger tube high-temp waste gas is lowered the temperature, after making greenhouse cooling to 200～300 ℃ of high-temp waste gas, discharge by the outlet of bundled tube cooler then; 20 ℃ recirculated cooling water enters in the water header tank by bundled tube cooler water inlet pipe, distribute through the inlet distribution plate, enter in the heat exchanger tube, carry out heat exchange by heat exchanger tube and the outer high-temp waste gas of pipe, absorb the high-temp waste gas heat, cooling water is warming up to 40～50 ℃; Enter bundled tube cooler external jacket by the water outlet plenum chamber through outlet pipe, after bundled tube cooler cylindrical shell is lowered the temperature, discharge by the outlet of bundled tube cooler external jacket.
Advantage of the present invention: core apparatus of the present invention is the bundled tube cooler, its primary structure comprises bundled tube cooler cylindrical shell, light pipe heat exchange group, finned tube heat exchange group, external jacket, header tank, inlet distribution plate etc., by adjusting to recirculated cooling water inflow and discharge pressure, but the heat exchanging process is controlled and is regulated, and reaches the temperature with high efficiency purpose.
The cylindrical shell of core apparatus bundled tube cooler of the present invention adopts circular configuration, mainly solves cylindrical shell pressure-bearing problem.
The set of heat exchange tubes of core apparatus bundled tube cooler of the present invention all adopts annular heat exchange tube structure, solves the expanded by heating of heat exchanger tube in the heat transfer process effectively.
The inlet distribution plate of set of heat exchange tubes distributes recirculated cooling water in the core apparatus bundled tube cooler of the present invention, and discharge reaches the heat exchange requirement in the heat exchanger tube to guarantee to enter, and reaches the high efficient heat exchanging purpose.
The external jacket of core apparatus bundled tube cooler of the present invention adopts the opened type design, guaranteeing to bundled tube cooler cylindrical shell to reduce the pressure-bearing load of cylindrical shell in effective cooling, reduces cylindrical shell thickness, the saving cost of investment.
High-temp waste gas temperature reduction technology of the present invention is achieved by the following scheme: high-temp waste gas enters in the bundled tube cooler, successively by light pipe heat exchange group, finned tube heat exchange group.By recirculated cooling water in the heat exchanger tube high-temp waste gas is lowered the temperature.Recirculated cooling water distributes through the moisture fabric swatch after entering into the water header tank from water inlet pipe, enters in the heat exchanger tube, and the high-temp waste gas outer with heat exchanger tube carries out indirect heat exchange, reduces the high-temp waste gas temperature.Cooling water after the heat exchange enters the water outlet header tank, is entered in the bundled tube cooler external jacket by outlet pipe, discharges after bundled tube cooler cylindrical shell is lowered the temperature.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an annular set of heat exchange tubes structural representation of the present invention;
Fig. 3 is the high-temp waste gas cooling system process chart that the present invention designs.
Above-mentioned drawing reference numeral explanation: 1-tube bundle heat exchanger cylindrical shell, 2-bundled tube cooler external jacket, 3-light pipe heat exchange group, 4-finned tube heat exchange group, 5-water inlet pipe, 6-manhole blind flange, the 7-header tank of intaking, 8-inlet distribution plate, the 9-tube sheet, 10-heat exchanger tube, 11-water outlet header tank, 12-header tank dividing plate, the 13-outlet pipe.
The specific embodiment
Bundled tube heat sink set of heat exchange tubes of the present invention adopts annular heat exchange group, adopts loop configuration can solve heat exchanger tube expanded by heating problem in the heat transfer process.Set of heat exchange tubes is divided into two kinds of light pipe heat exchange group and finned tube heat exchange groups, light pipe heat exchange group adopts the 0Cr18Ni9 material, main effect is that high-temp waste gas is carried out the high temperature heat exchange, cooling by recirculated cooling water in the heat exchanger tube, both guaranteed the practicality of material, and also guaranteed cooling-down effect, finned tube heat exchange group adopts Q345R, after high-temp waste gas is through the cooling of light pipe heat exchange group, enters finned tube heat exchange group and carry out twice cooling.The inlet distribution plate adopts Q345R, and main effect is that recirculated cooling water is distributed, and makes the cooling water flow that enters in the every heat exchanger tube reach production engineering specifications, guarantees the heat exchange effect.It is to utilize the recirculated cooling water in the chuck that bundled tube cooler cylindrical shell is lowered the temperature that the cooler external jacket mainly acts on, and avoids the injury of high-temperature gas to cylindrical shell, satisfies the resistant to elevated temperatures requirement of cylindrical shell material.Simultaneously, adopt the opened type design to reduce cylindrical shell pressure-bearing load, reduced cylindrical shell thickness.
Referring to Fig. 1: bundled tube cooler of the present invention is made up of bundled tube cooler cylindrical shell 1, bundled tube cooler external jacket 2, light pipe heat exchange group 3, finned tube heat exchange group 4.Establish 9 groups of annular heat exchange groups altogether, wherein 3 groups is that light pipe heat exchange group, 6 groups are finned tube heat exchange group.
Referring to Fig. 2: the annular set of heat exchange tubes of bundled tube cooler, primary structure is made up of water inlet pipe 5, manhole blind flange 6, water inlet header tank 7, inlet distribution plate 8, tube sheet 9, heat exchanger tube 10, water outlet header tank 11, header tank dividing plate 12 and outlet pipe 13, water inlet pipe 5, outlet pipe 13 and header tank dividing plate 12 are fixed on the manhole blind flange 6, water inlet header tank 7 and water outlet header tank 11 are made of manhole blind flange 6, header tank dividing plate 12 and tube sheet 9, inlet distribution plate 8 is fixed on in the water header tank 7, and heat exchanger tube 10 is fixed on the tube sheet 9.
Referring to Fig. 3: according to temperature reduction technology of the present invention, the high-temp waste gas temperature-fall period is as follows:
800～1300 ℃ high-temp waste gas enters in the bundled tube cooler, successively by 3 groups of light pipe heat exchange groups 3 and 6 groups of finned tube heat exchange groups 4, by the recirculated cooling water in the heat exchanger tube 10 high-temp waste gas is lowered the temperature, after making greenhouse cooling to 200～300 ℃ of high-temp waste gas, discharge by the outlet of bundled tube cooler then.20 ℃ recirculated cooling water enters in the water header tank 7 by bundled tube cooler water inlet pipe 5, distribute through inlet distribution plate 8, enter in the heat exchanger tube 10, carry out heat exchange by heat exchanger tube 10 and the outer high-temp waste gas of pipe, absorb the high-temp waste gas heat, cooling water is warming up to 40～50 ℃, enters bundled tube cooler external jacket 2 by water outlet plenum chamber 11 through outlet pipe 13, after bundled tube cooler cylindrical shell 1 lowered the temperature, discharge by 2 outlets of bundled tube cooler external jacket.
Claims (6)
1, high-temp waste gas heat sink, it is characterized in that: form by tube bundle heat exchanger cylindrical shell (1), bundled tube cooler external jacket (2), light pipe heat exchange group (3), finned tube heat exchange group (4), the inside of described tube bundle heat exchanger cylindrical shell (1) is equipped with light pipe heat exchange group (3) and finned tube heat exchange group (4) successively, and bundled tube cooler external jacket (2) is fixedly mounted on the outer wall of tube bundle heat exchanger cylindrical shell (1).
2, high-temp waste gas heat sink according to claim 1 is characterized in that: described light pipe heat exchange group (3) and finned tube heat exchange group (4) are made up of water inlet pipe (5), manhole blind flange (6), water inlet header tank (7), inlet distribution plate (8), tube sheet (9), heat exchanger tube (10), header tank dividing plate (12), water outlet header tank (11), outlet pipe (13) respectively.
3, high-temp waste gas heat sink according to claim 1 and 2, it is characterized in that: described water inlet pipe (5), outlet pipe (13) and header tank dividing plate (12) are fixed on the manhole blind flange (6), water inlet header tank (7) and water outlet header tank (11) are made of manhole blind flange (6), header tank dividing plate (12) and tube sheet (9), inlet distribution plate (8) is fixed on in the water header tank (7), and heat exchanger tube (10) is fixed on the tube sheet (9).
4, high-temp waste gas heat sink according to claim 1 is characterized in that: described tube bundle heat exchanger cylindrical shell (1) is a cylindrical shape.
5, high-temp waste gas heat sink according to claim 1 is characterized in that: described light pipe heat exchange group (3) and finned tube heat exchange group (4) are annular heat exchanger tube.
6, temperature reduction method for hot gas, it is characterized in that: 800～1300 ℃ high-temp waste gas enters in the bundled tube cooler, successively by 3 groups of light pipe heat exchange groups (3) and 6 groups of finned tube heat exchange groups (4), by the recirculated cooling water in the heat exchanger tube (10) high-temp waste gas is lowered the temperature, after making greenhouse cooling to 200～300 ℃ of high-temp waste gas, discharge by the outlet of bundled tube cooler then; 20 ℃ recirculated cooling water enters in the water header tank (7) by bundled tube cooler water inlet pipe (5), distribute through inlet distribution plate (8), enter in the heat exchanger tube (10), carry out heat exchange by heat exchanger tube (10) and the outer high-temp waste gas of pipe, absorb the high-temp waste gas heat, cooling water is warming up to 40～50 ℃; Enter bundled tube cooler external jacket (2) by water outlet plenum chamber (11) through outlet pipe (13), after bundled tube cooler cylindrical shell (1) is lowered the temperature, discharge by bundled tube cooler external jacket (2) outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100239454A CN101655325B (en) | 2009-09-17 | 2009-09-17 | Temperature reduction method for hot gas and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100239454A CN101655325B (en) | 2009-09-17 | 2009-09-17 | Temperature reduction method for hot gas and device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101655325A true CN101655325A (en) | 2010-02-24 |
| CN101655325B CN101655325B (en) | 2011-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100239454A Active CN101655325B (en) | 2009-09-17 | 2009-09-17 | Temperature reduction method for hot gas and device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943529A (en) * | 2010-09-29 | 2011-01-12 | 西安航天华威化工生物工程有限公司 | Dry cooling device and method for high-temperature gas |
| CN102613662A (en) * | 2012-03-19 | 2012-08-01 | 李永堂 | Quick cooling and dehumidifying system for continuous food chilling or quick-freezing process |
-
2009
- 2009-09-17 CN CN2009100239454A patent/CN101655325B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943529A (en) * | 2010-09-29 | 2011-01-12 | 西安航天华威化工生物工程有限公司 | Dry cooling device and method for high-temperature gas |
| CN102613662A (en) * | 2012-03-19 | 2012-08-01 | 李永堂 | Quick cooling and dehumidifying system for continuous food chilling or quick-freezing process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101655325B (en) | 2011-07-13 |
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