CN202041089U

CN202041089U - Vacuum tube heat exchange device applied to exhaust heat recycling of kiln exhaust gas

Info

Publication number: CN202041089U
Application number: CN201120103902XU
Authority: CN
Inventors: 牛健禄
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-11
Filing date: 2011-04-11
Publication date: 2011-11-16
Anticipated expiration: 2021-04-11

Abstract

The utility model discloses a vacuum tube heat exchange device applied to exhaust heat recycling of kiln exhaust gas, which comprises an exhaust gas pipeline, an air pipeline and a plurality of vacuum heat pipes, heating sections on the lower portions of the vacuum heat pipes are arranged in the exhaust gas pipeline, and condensation sections on the upper portion of the vacuum heat pipes are arranged in the air pipeline. The left end and the right end of the exhaust gas pipeline are respectively provided with a high temperature exhaust gas inlet and a low temperature exhaust gas outlet, the left end and the right end of the air pipeline are respectively provided with a hot air outlet and a cold air inlet, and an exhaust gas outlet direction formed between the high temperature exhaust gas inlet and the low temperature exhaust gas outlet of the exhaust gas pipeline is opposite to the air outlet direction formed between the cold air inlet and the hot air outlet of the air pipeline. The vacuum tube heat exchange device adopts the vacuum heat pipes as heat transmission media, the vacuum heat pipes can still work normally under the condition that temperature difference of the cold ends and the hot ends of the vacuum heat pipes is small, have super heat conductivity and strong environment adaptability. The vacuum tube heat exchange device can be widely used in furnaces of roller bed kilns, tunnel kilns and shuttle kilns where environment is severe.

Description

A kind of vacuum tube heat-exchanger rig that is applied in the recovery of kiln waste gas residual heat

Technical field

The utility model relates to a kind of heat-exchanger rig, is specifically related to a kind of vacuum tube that utilizes that is applied to especially in the recovery of kiln waste gas residual heat and carries out the heat-exchanger rig of heat exchange.

Background technology

Roller kilns, tunnel cave, shuttle kiln and various industrial furnace in use, can be in atmosphere discharging have the flue gas of heat in a large number, this not only can cause to a certain degree pollution to surrounding enviroment, also can cause a large amount of energy wastes.But the flue gas the inside is contained chemical compositions such as CO2, SO2, NO simultaneously, can not directly utilize generally speaking.

At present existing heat-exchanger rig can reclaim the waste heat in the flue gas effectively, is used for air, water heating are produced hot-air, hot water, further utilizes for the user.Shell-and-tube heat exchanger and the ceramic-type heat exchangers of adopting in kiln exhaust gas utilization field more, heat exchange element in these heat exchangers mostly is fluid or carborundum engineering ceramics, have high temperature resistant and excellent properties heat shock resistance though all have, and has good corrosion resistance, but the thermal conductivity factor of these materials is little, heat conductivility is low, can not adapt to the low-temperature flue gas waste heat recovery.

Summary of the invention

In order to address the above problem, the utility model provides a kind of vacuum tube heat-exchanger rig that the kiln waste gas residual heat reclaims, simple in structure, that heat exchange effect is good that is applied to.

The utility model is that the technical scheme that its problem of solution is adopted is:

A kind of vacuum tube heat-exchanger rig that is applied in the recovery of kiln waste gas residual heat, comprise flue, air duct and Duo Gen vacuum thermal pipe, the bringing-up section of vacuum thermal pipe bottom is arranged in the flue, the condensation segment on vacuum thermal pipe top is positioned at air duct, the two ends, the left and right sides of described flue are respectively equipped with high-temperature flue gas import and low-temperature flue gas outlet, the two ends, the left and right sides of air duct are respectively equipped with hot air outlet and inlet of cold air, and the outgassing direction that forms between the smoke direction that forms between the outlet of the high-temperature flue gas import of flue and low-temperature flue gas and the inlet of cold air of air duct and the hot air outlet is opposite.

In the utility model, the smoke direction that forms between the high-temperature flue gas import of the axial and flue of described each vacuum thermal pipe and the low-temperature flue gas outlet is vertical; The airintake direction that forms between the hot air outlet of the axial and air duct of each vacuum thermal pipe and the inlet of cold air is vertical.

In the utility model, the lower surface of described air duct directly is connected with the upper surface of flue.

The beneficial effects of the utility model are: the outgassing direction that forms between the smoke direction that forms between the outlet of the high-temperature flue gas import of flue of the present utility model and low-temperature flue gas and the inlet of cold air of air duct and the hot air outlet is opposite, even the temperature of vacuum thermal pipe reduces gradually along inlet of cold air to hot air outlet direction, cleaned air begins progressively to heat from inlet of cold air, when cleaned air when hot air outlet flows out, its temperature reaches maximum, the situation of having avoided heat to reflux, the cleaned air that has been heated can be sent into oven dry kiln drying product base substrate or as combustion air of shuttle kiln or the like, can effectively realize the recovery of fume afterheat, for the energy-saving and emission-reduction of country contribute.

Further, in the utility model, adopt the vacuum heat-conduction pipe as heat transfer medium, the vacuum heat-conduction pipe still can operate as normal under the very little situation of cold junction and warm end temperature difference, and has a superior heat conductivity, and the adaptability of environment is strong, can be widely used in the kiln of the comparatively abominable roller kilns of environment, tunnel cave, shuttle kiln.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the structural representation of embodiment.

The specific embodiment

As shown in Figure 1, a kind of being applied in the recovery of kiln waste gas residual heat that present embodiment provided, simple in structure, the vacuum tube heat-exchanger rig that heat exchange effect is good, comprise flue 1, air duct 2 and Duo Gen vacuum thermal pipe 3, be provided with heat-conducting medium in the vacuum thermal pipe 3, the bringing-up section of vacuum thermal pipe 3 bottoms is arranged in the flue 1, the condensation segment on vacuum thermal pipe 3 tops is positioned at air duct 2, the two ends, the left and right sides of described flue 1 are respectively equipped with high-temperature flue gas import 11 and low-temperature flue gas outlet 12, the two ends, the left and right sides of air duct 2 are respectively equipped with hot air outlet 21 and inlet of cold air 22, and the outgassing direction of formation is opposite between the smoke direction that forms between the high-temperature flue gas import 11 of flue 1 and the low-temperature flue gas outlet 12 and the inlet of cold air 22 of air duct 2 and the hot air outlet 21.

As preferred embodiment, the smoke direction that forms between the high-temperature flue gas import 11 of the axial and flue 1 of described each vacuum thermal pipe 3 and the low-temperature flue gas outlet 12 is vertical; The airintake direction that forms between the hot air outlet 21 of the axial and air duct 2 of each vacuum thermal pipe 3 and the inlet of cold air 22 is vertical.Described flue 1 and air duct 2 are square, and the lower surface of air duct 2 directly is connected with the upper surface of flue 1, can reduce distance between the two like this, make the distance of vacuum thermal pipe 3 transmission heats shorter, reduce thermal loss.

In the present embodiment, vacuum heat-conduction pipe 3 is as heat transfer medium, vacuum heat-conduction pipe 3 still can operate as normal under the very little situation of cold junction and warm end temperature difference, and has a superior heat conductivity, and the adaptability of environment is strong, can be widely used in the comparatively abominable roller kilns of environment, tunnel cave, shuttle kiln and the various industrial furnace.After the high-temperature flue gas of kiln enters flue 1 from high-temperature flue gas import 11, vacuum thermal pipe 3 heat absorptions, its inner heat-conducting medium will be vaporizated into steam rapidly, be vacuum state in the pipe, can effectively guarantee the not managed interior air pressure influence of vaporization of heat-conducting medium.Be diffused into condensation segment by bringing-up section, condensation segment dispels the heat after running into clean cold air in the air duct 2, will clean cold air heating produces behind the hot-air low-temperature flue gas outlet 12 outputs from flue 1.The heat-conducting medium that the is vaporizated into steam liquid that is cooled back after with clean cold air heating flow back into the bringing-up section of vacuum thermal pipe 3 bottoms under the effect of heat-conducting medium self gravitation, finish a circulation.So repeatedly, can constantly add hot-air, use for the user.And the outgassing direction of formation is opposite between the smoke direction that forms between the high-temperature flue gas import 11 of flue 1 and the low-temperature flue gas outlet 12 and the inlet of cold air 22 of air duct 2 and the hot air outlet 21,21 directions reduce gradually even the temperature of vacuum thermal pipe 3 is along inlet of cold air 22 to hot air outlet, cleaned air is from progressively heating of inlet of cold air 22 beginnings, when cleaned air when hot air outlet 21 flows out, its temperature reaches maximum, the situation of having avoided heat to reflux, the cleaned air that has been heated can be sent into oven dry kiln drying product base substrate or as combustion air of shuttle kiln or the like, can effectively realize the recovery of fume afterheat, for the energy-saving and emission-reduction of country contribute.

Certainly, the utility model is except above-mentioned embodiment, and other equivalent technical solutions also should be within its protection domain.

Claims

1. one kind is applied to the vacuum tube heat-exchanger rig that the kiln waste gas residual heat reclaims, comprise flue (1), air duct (2) and many vacuum thermal pipes (3), the bringing-up section of vacuum thermal pipe (3) bottom is arranged in the flue (1), the condensation segment on vacuum thermal pipe (3) top is positioned at air duct (2), it is characterized in that: the two ends, the left and right sides of described flue (1) are respectively equipped with high-temperature flue gas import (11) and low-temperature flue gas outlet (12), the two ends, the left and right sides of air duct (2) are respectively equipped with hot air outlet (21) and inlet of cold air (22), and the outgassing direction of formation is opposite between the smoke direction that forms between the high-temperature flue gas import (11) of flue (1) and the low-temperature flue gas outlet (12) and the inlet of cold air (22) of air duct (2) and the hot air outlet (21).

2. a kind of vacuum tube heat-exchanger rig that the kiln waste gas residual heat reclaims that is applied to according to claim 1, it is characterized in that: the smoke direction that forms between the high-temperature flue gas import (11) of the axial and flue (1) of described each vacuum thermal pipe (3) and the low-temperature flue gas outlet (12) is vertical; The airintake direction that forms between the hot air outlet (21) of axial and air duct (2) of each vacuum thermal pipe (3) and the inlet of cold air (22) is vertical.

3. a kind of vacuum tube heat-exchanger rig that the kiln waste gas residual heat reclaims that is applied to according to claim 1, it is characterized in that: the lower surface of described air duct (2) directly is connected with the upper surface of flue (1).