CN2201582Y - Dust romoving heat exchanger - Google Patents

Dust romoving heat exchanger Download PDF

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Publication number
CN2201582Y
CN2201582Y CN93235829U CN93235829U CN2201582Y CN 2201582 Y CN2201582 Y CN 2201582Y CN 93235829 U CN93235829 U CN 93235829U CN 93235829 U CN93235829 U CN 93235829U CN 2201582 Y CN2201582 Y CN 2201582Y
Authority
CN
China
Prior art keywords
heat exchanger
sleeve
heat
pipe
dust
Prior art date
Application number
CN93235829U
Other languages
Chinese (zh)
Inventor
丁玉龙
夏德宏
苍大强
杨天均
Original Assignee
北京科技大学
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Filing date
Publication date
Application filed by 北京科技大学 filed Critical 北京科技大学
Priority to CN93235829U priority Critical patent/CN2201582Y/en
Application granted granted Critical
Publication of CN2201582Y publication Critical patent/CN2201582Y/en

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    • Y02E20/348

Abstract

The utility model relates to a dust removing heat exchanger which belongs to the technical field of industrial heat exchanging. The utility model structure comprises a spraying-flow heat exchanger, a rotational flow heat exchanger and a cyclone dust remover. A central combined barrel is composed of the parts of an air spraying-flow heat exchanger and an exhaust pipe of the dust remover which are extended into the dust remover. A shell body of the cyclone dust remover and a conical section can be a double-layer sleeve which forms a cyclone heat exchanger. An inner sleeve tube side of circular seam of the a sleeve barrel is provided with heat exchanging ribs, and a cold air inlet pipe is arranged on the spraying-flow heat exchanger. The utility model is used for the situations that flue gas inlet temperature is 300 DEG C to 1000DEG C, integral heat transfer coefficient is 70W /m < 2 > * DEG C, the average particle diameter is 20 mu m, and the dedust removing efficiency is more than 60%.

Description

The invention belongs to the industrial heat exchange technical field, heat exchanger is a kind of waste heat recovery apparatus that extensively adopts in the industrial production.Air heat exchanger in the market mainly contains plate heat interchanger, pipe heat exchanger, radiation pipe heat exchanger, rotary type heat exchanger, ceramic heat exchanger, efflux heat-exchanger and eddy flow heat exchanger etc., but there is following shortcoming in these heat exchangers: (1) comprehensive heat exchanger coefficient is low, generally has only 25W/m 2℃ as plate heat interchanger, pipe heat exchanger etc.; (2) exchange big slightly integrated heat transfer coefficient for high-drag, as efflux heat-exchanger, eddy flow heat exchanger etc.; (3) be not suitable for the flue gas waste heat recovery that contains dust; (4) flue gas that dust is arranged is reclaimed, normally in smoke evacuation system, uses deduster and heat exchanger two complete equipments, thus bulky, cost an arm and a leg , And and shared floor area are big, and inconvenience is installed.

The purpose of this utility model is to reclaim the high-temperature flue gas waste heat of dust-laden, overcomes the shortcoming of the weak effect of heat transfer process after the first dedusting; Overcome again and carry out heat exchange dedusting more earlier, cause the heat exchanger dust stratification to cause the shortcoming that heat exchange efficiency is low and service life is short.Deduster and heat exchanger are organically made up, reach the good result of dedusting and heat exchange.The heat exchange efficiency and the service life of the efficiency of dust collection and the heat exchanger of deduster have been improved simultaneously.

Accompanying drawing of the present utility model is the profile of the preceding diagrammatic sketch of high-effective dust-removing heat exchanger.

Structure of the present utility model as shown in drawings, comprise packaged air conditioner (1), ash interlocking turnover panel (5), drive motors (6), ash storage chamber (7), hot-blast outlet pipe (8), ash-laden gas inlet tube (9), cold air inlet duct (10) are unloaded in center combination tube (2), dirt pocket (3), hot bellows (4), sealing, totally smoke outlet tube (11), the two socket case of deduster are rotational flow heat exchanger (12), jet flow device (13), injection heat transfer pipe (14) with the muscle sheet.

Structure of the present utility model comprises efflux heat-exchanger, eddy flow heat exchanger and cyclone dust collectors.At the inner set center combination tube (2) of cyclone dust collectors is that the part that blast pipe by air jet heat exchanger and deduster stretches into deduster constitutes.Suit efflux heat-exchanger in the deduster blast pipe, and the blast pipe of deduster is heat-transfer surface (14), and the inner sleeve of heat exchanger is flue gas exhaust pipe (11).

Cyclone dust collectors housing and conical section are double layer sleeve barrel, constitute eddy flow heat exchanger (12), and inner sleeve outside air side is that the inner sleeve side of sleeve circumferential weld adds heat exchange muscle sheet.The air inlet pipe of cold air is located on the efflux heat-exchanger, and the outlet of hot-air is located at the port of export of deduster sleeve eddy flow heat exchanger, promptly is provided with the bottom of cyclone dust collectors.

Center combination tube of the present utility model, the exhaust tube wall that slips in the deduster is the corrugated bobbin, the air side wall of heat exchanger inner sleeve (11) (clean smoke outlet tube), the inboard muscle sheet that adopts of circumferential weld is set up heat exchange muscle sheet along the flow of flue gas direction.

The muscle sheet of deduster housing eddy flow heat exchanger of the present utility model (12) is an eddy flow muscle sheet, also can establish direct current muscle sheet.

The utility model ash-laden gas inlet velocity 5~20m/s, input gas temperature 300-1000 ℃, import exhaust gas volumn 200~5000m 3/ h.The inlet air amount is 200~5000m 3/ h, speed 10-25m/s, air side crushing are 500-1500Pa.Flow and inlet velocity according to ash-laden gas are determined caliber, determine inlet of cold air pipe diameter according to the cold air amount and the speed that enter simultaneously.

The utility model can adopt the use in parallel of plural dust-removing heat exchanger, the use of also can connecting.

Ash interlocking turnover panel is unloaded in the utility model sealing, is divided into upper and lower turnover panel, drives automatically with motor, and flap rotates continuously, and following turnover panel regularly rotates.

The cylindrical shell of the utility model cyclone dust is the eddy flow heat exchanger of two sleeves, and the inner sleeve annular inner wall of sleeve circumferential weld is provided with direct current heat exchange muscle sheet or eddy flow heat exchange muscle sheet.

The principle of this heat exchanger is: high temperature dust smoke inlet (9) is tangential or cut to spraying into dirt pocket (3), because action of centrifugal force, flue gas and dust separation, the adherent rotation of dust is downward, the upset of unloading ash interlocking turnover panel (5) through sealing enters ash storage chamber (7), and can ash regularly be discharged by drive motors (6); With dust separation clean flue gas then upwards by center combination tube (2), discharge via outlet (11), meanwhile, cold air enters packaged air conditioner (1) after uniform distribution by inlet tube (10), enters the interlayer circumferential weld of center combination tube (2) efflux heat-exchanger; And it is downward along circumferential weld.Enter outermost layer outer wall (13) circumferential weld of center combination tube (2) bottom through jet flow device (13) aperture of bottom, and then enter the interlayer circumferential weld of the telescopic eddy flow heat exchanger of dirt pocket (3) housing, and circumferential weld is downward thus, the most laggard hot bellows (4) is discharged by hot-blast outlet (8); In the above process, because the collision of convection current, radiation and the particle of high temperature ash-laden gas and dirt pocket inwall and center combination tube bottom outer wall (13) and wall heat transfer, and the convection current and the radiant heat transfer of clean flue gas and center combination tube inwall.Make fume afterheat pass to flow air in center combination tube circumferential weld and dirt pocket circumferential weld.

This heat exchanger has following characteristics:

1. dedusting function and UTILIZATION OF VESIDUAL HEAT IN merit are organically combined.

2. take two turnover plate type automatic ash-discharging devices, suppressed effectively to return on the dust, and helped unloading ash.

3. the air side of locating at high temperature stagnation point (being center combination tube bottom) has adopted the jet flow technology, and has adopted eddy flow reinforcement chip technology in other place (air side), has strengthened the heat convection of air side effectively.

4. prolong the length of center combination tube, improved heat exchange area effectively, greatly utilized the waste heat of flue gas.

5. adopt thin-walled material reinforcement sheet and spraying technology, improved the temperature-responsive speed of heat exchanger effectively, over-emitting black exhaust has inhibitory action when lighting a fire to suppressing stove.

6. tangential introduction of air enters packaged air conditioner, helps the even distribution of cold wind; The high temperature dust flue gas is tangential or cut to entering dirt pocket and help gas solid separation; The center line of hot-blast outlet pipe and the vertical and intersectant centerline of whole heat exchanger.

7. the center combination pipe is by fume side reinforcement sheet, and the muscle sheet is along flow direction; The outermost layer wall of center combination pipe bottom adopts bellows, to increase heat exchange area.

8. the muscle sheet that adds in the circumferential weld of dirt pocket has two kinds, and a kind of is eddy flow muscle sheet, and another kind is a direct current muscle sheet, all is along flow direction.

9. utilized the coefficient of heat transfer principle more much bigger between Dual-Phrase Distribution of Gas olid and the solid wall surface dexterously in fume side, improved the coefficient of heat transfer of fume side, thereby improved integrated heat transfer coefficient greatly than the coefficient of heat transfer between pure gas and the solid wall surface.

10. the gas approach speed of this heat exchanger is 5~20m/s, and input gas temperature is 300-1000 ℃; The import exhaust gas volumn is speed 200~5000Nm 3/ hr, import cold air amount is 200~5000Nm 3/ hr.The integrated heat transfer coefficient of this heat exchanger is 70w/m 2About ℃, the efficiency of dust collection of dust that to average grain diameter is 20 μ m is more than 60%.

Big exhaust gas volumn and big air capacity are adopted the use in parallel of two or more dust-removing heat exchangers; Can adopt two-stage or this type of heat exchanger series connection more than the two-stage to use to the wide flue gas of particle size of dust distribution.

The present invention is suitable for various heating furnaces, the dedusting and the waste heat recovery of the hot flue gas that contains dust of kiln, boiler, electric furnace, converter, furnace cupola etc.

Claims (5)

1, high-effective dust-removing heat exchanger, comprise efflux heat-exchanger, cold air inlet pipe (10), packaged air conditioner (1), jet flow device (13), injection heat transfer pipe (14), clean flue gas exhaust pipe (11), hot blast blast pipe (8), the inside exhaust pipe and the efflux heat-exchanger suit that it is characterized in that deduster constitute center combination tube (2), and the garden tube of cyclone dust collectors housing and conical section are the eddy flow heat exchanger (12) of two sleeves, and hot bellows (14) and hot-air blast pipe (8) are located at the bottom of cyclone dust collectors, ash interlocking turnover panel is unloaded in sealing, is divided into upper and lower turnover panel (5).
2, according to the described high-effective dust-removing heat exchanger of claim 1, it is characterized in that the center combination tube stretches into the part of dirt pocket (3), its outer sleeve adopts bellows, and the inboard muscle sheet that adopts of circumferential weld is installed the muscle sheet along the fume pipe discharge directions.
3, according to the described high-effective dust-removing heat exchanger of claim 1, it is characterized in that the sleeve eddy flow heat exchanger of cyclone dust collectors, the inner sleeve annular inner wall of sleeve circumferential weld is established direct current muscle sheet or eddy flow muscle sheet.
4, according to the described high-effective dust-removing heat exchanger of claim 1, it is characterized in that convertible sealing unloads ash interlocking turnover panel, flap be rotation continuously, following turnover panel regularly rotates.
According to the described high-effective dust-removing heat exchanger of claim 1, it is characterized in that 5, flue gas flow is 200~5000m according to velocity of flue gas 5~20m/s 3/ h determines the ash-laden gas inlet diameter, and the inlet of cold air diameter is according to air capacity 200~5000m 3/ h, speed 10~25m/s determines.
CN93235829U 1993-12-30 1993-12-30 Dust romoving heat exchanger CN2201582Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN93235829U CN2201582Y (en) 1993-12-30 1993-12-30 Dust romoving heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN93235829U CN2201582Y (en) 1993-12-30 1993-12-30 Dust romoving heat exchanger

Publications (1)

Publication Number Publication Date
CN2201582Y true CN2201582Y (en) 1995-06-21

Family

ID=33811164

Family Applications (1)

Application Number Title Priority Date Filing Date
CN93235829U CN2201582Y (en) 1993-12-30 1993-12-30 Dust romoving heat exchanger

Country Status (1)

Country Link
CN (1) CN2201582Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101196381B (en) * 2008-01-08 2010-06-16 哈尔滨工程大学 Pipe shell type heat exchanger with dedusting function
CN103644562A (en) * 2013-11-13 2014-03-19 李而宏 Combined type energy-saving biomass fuel boiler
CN104930844A (en) * 2015-06-29 2015-09-23 吉首大学 Exhaust heat recovery and dust removal integrated type biomass boiler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101196381B (en) * 2008-01-08 2010-06-16 哈尔滨工程大学 Pipe shell type heat exchanger with dedusting function
CN103644562A (en) * 2013-11-13 2014-03-19 李而宏 Combined type energy-saving biomass fuel boiler
CN104930844A (en) * 2015-06-29 2015-09-23 吉首大学 Exhaust heat recovery and dust removal integrated type biomass boiler

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee