Double-channel honeycomb high-temperature heat exchange device

Abstract

The utility model discloses a double-channel honeycomb high-temperature heat exchange device which comprises a high-temperature heat exchange shell, and a first gas inlet and a first gas outlet are formed in the two opposite side edges of the high-temperature heat exchange shell respectively. A second gas inlet and a second gas outlet are respectively formed in the other two opposite side edges of the high-temperature heat exchange shell; a heat exchange core body is arranged in the high-temperature heat exchange shell, a plurality of first gas channels and a plurality of second gas channels are arranged in the heat exchange core body, and each first gas channel and each second gas channel are arranged in a vertically spaced and staggered manner; the first gas channels communicate with the first gas inlet and the first gas outlet, and the second gas channels communicate with the second gas inlet and the second gas outlet. According to the heat exchange device, waste heat recovery of high-temperature smoke can be achieved, meanwhile, the heat exchange efficiency is greatly improved, the pressure of the hearth is higher, and the stability of the device is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to industrial furnace flue gas waste heat recovery technical field, especially relates to a double -channel honeycomb high temperature heat exchange device. BACKGROUND

[0002] The burner of industrial furnace can produce a large amount of high-temperature flue gas in the production process, the flue gas contains a large amount of waste heat, can adopt the mode of heat exchange device to preheat the combustion-supporting air required for the burner combustion, realizes waste heat recovery utilization, energy saving and consumption reduction.

[0003] The heat exchange device commonly used in the field of industrial furnace at present mainly has surface type heat exchange device and regenerative heat exchange device. The surface type heat exchange device generally adopts stainless steel material, is subject to the temperature resistance of stainless steel material, is generally used in low-temperature flue gas heat exchange field, and the waste heat recovery efficiency is relatively low, when the flue gas contains corrosive components, the service life of surface type heat exchange device is shorter. The regenerative heat exchange device can be applied in high-temperature flue gas waste heat recovery field, and has very high waste heat recovery efficiency. The regenerative heat exchange device generally adopts alumina ball or single-channel honeycomb body as regenerative medium, but no matter which regenerative medium is adopted, frequent reversing action is needed to realize continuous heat exchange, which is extremely high for the reliability requirement of the reversing valve of the combustion system, which is the failure concentration point of industrial furnace equipment. At the same time, the furnace pressure fluctuation generated when reversing cannot be avoided, in addition, because the regenerative medium changes frequently and sharply, the service life of regenerative medium is short. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a kind of

[0005] The technical scheme of the utility model is:

[0006] A double-channel honeycomb high-temperature heat exchange device, characterized by comprising a high-temperature heat exchange shell, first gas inlet and first gas outlet are respectively arranged on the opposite two sides of the high-temperature heat exchange shell.

[0007] A heat exchange core is arranged in the high-temperature heat exchange shell, a plurality of first gas channels and a plurality of second gas channels are arranged in the heat exchange core, each first gas channel and each second gas channel are arranged in an upper and lower staggered manner, a plurality of first gas channels are connected with the first gas inlet and the first gas outlet, and a plurality of second gas channels are connected with the second gas inlet and the second gas outlet.

[0008] Further, the heat exchange core is composed of a plurality of honeycomb heat exchange bodies.

[0009] Each of the honeycomb heat exchange bodies is a rectangular block, which is provided with a plurality of first through holes and a plurality of second through holes, the first through holes are communicated with two opposite sides of the honeycomb heat exchange body, and the second through holes are communicated with the other two opposite sides of the honeycomb heat exchange body; each first through hole and each second through hole are vertically distributed in an up-and-down staggered manner; the first through holes on the plurality of honeycomb heat exchange bodies constitute the first gas channel, and the second through holes on the plurality of honeycomb heat exchange bodies constitute the second gas channel.

[0010] Further, the plurality of first through holes on each of the honeycomb heat exchange bodies are arranged in a large rectangular array, and the first through holes in two adjacent rows of the large rectangular array are spaced apart from each other; the plurality of second through holes on each of the honeycomb heat exchange bodies are arranged in a small rectangular array, and the second through holes in each row of the small rectangular array are located between two adjacent rows of the large rectangular array.

[0011] Further, the first through holes and the second through holes on each of the honeycomb heat exchange bodies are the same or different in cross section.

[0012] Further, the number of the first through holes on each of the honeycomb heat exchange bodies is greater than the number of the second through holes.

[0013] Further, each of the honeycomb heat exchange bodies is a high-temperature ceramic honeycomb heat exchange body.

[0014] Further, the high-temperature heat exchange shell is provided with a support grid on the inner side and on the side of the second gas inlet, and the heat exchange core is arranged on the support grid.

[0015] Further, the inner surface of the high-temperature heat exchange shell is provided with a high-temperature resistant layer.

[0016] Further, the high-temperature heat exchange shell is provided with an upper cover body on the side opposite to the second gas inlet, and the opening of the upper cover body is the second gas outlet.

[0017] Further, the inner surface of the upper cover body is provided with a high-temperature resistant layer.

[0018] The beneficial technical effects of the utility model are as follows:

[0019] The high-temperature flue gas and the combustion-supporting gas continuously exchange heat through the first gas channel and the second gas channel which are staggered and perpendicular to each other in the heat exchange core, compared with the heat accumulating heat exchange device, the heat exchange device does not need to reverse the valve, the system stability is greatly improved, the furnace pressure is more stable, and the phenomenon of rupture damage caused by the cold and hot fluctuation of the heat accumulating medium due to frequent switching is improved. In addition, the heat exchange core of the utility model is composed of a plurality of honeycomb heat exchange bodies stacked and combined, on the one hand, the honeycomb heat exchange body is a high-temperature ceramic honeycomb heat exchange body, which can be used at a working temperature of 1500 DEG C, and the specific heat capacity is larger, compared with the general surface type heat exchange device, the waste heat recovery of the superhigh-temperature flue gas can be realized, and the heat exchange efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole schematic diagram of the utility model;

[0021] Figure 2 It is Figure 1 C-C direction schematic diagram of the utility model;

[0022] Figure 3 It is Figure 1 L direction schematic diagram of the utility model;

[0023] Figure 4 It is Figure 1 A-A direction schematic diagram of the utility model;

[0024] Figure 5 It is Figure 4 D-D direction schematic diagram of the utility model;

[0025] Figure 6 It is Figure 1 K direction schematic diagram of the utility model;

[0026] Figure 7 It is Figure 6 B-B direction schematic diagram of the utility model;

[0027] Figure 8 It is the honeycomb heat exchange body schematic diagram of the utility model.

[0028] Wherein:

[0029] 100-high-temperature heat exchange shell, 102-supporting grid, 103-high-temperature resistant layer, 104-supporting platform, 201-first gas inlet, 202-first gas outlet, 301-second gas inlet, 302-second gas outlet, 400-heat exchange core, 401-honeycomb heat exchange body, 4011-first through hole, 4012-second through hole, 500-upper cover body. DETAILED DESCRIPTION

[0030] In order to make the technical means of the utility model more clearly understood, and can be implemented according to the content of the specification, the specific embodiment of the utility model is further described in detail below, the following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0031] As shown in Figures 1-8 The utility model provides a kind of double channel honeycomb high temperature heat exchange device, it is used with the burner of industrial furnace, the large amount of high temperature flue gas generated in burner is guided into the heat exchange device of the utility model to do heat source, the fire-retardant air required by burner is preheated, and waste heat recovery is realized.

[0032] The utility model provides a kind of double channel honeycomb high temperature heat exchange device including high temperature heat exchange shell 100 and heat exchange core body 400.The high temperature heat exchange shell 100 of the utility model is a rectangular cavity, and first gas inlet 201 and first gas outlet 202 are distributed and arranged on opposite two sides, second gas inlet 301 and an upper cover body 500 are arranged on the other opposite two sides, the upper cover body 500 is provided with outlet, the outlet is second gas outlet 302, and second gas inlet 301 and second gas outlet 302 are oppositely arranged.The upper cover body 500 and high temperature heat exchange shell 100 are connected by movable bolt, so as to disassemble and replace honeycomb heat exchange body 401 in high temperature heat exchange shell 100.

[0033] Further, high temperature heat exchange shell 100 inner surface and upper cover body 500 inner surface are all equipped with high temperature resistant layer 103.High temperature resistant layer 103 is formed by heat preservation material and refractory material.

[0034] In order to support and fix heat exchange core body 400, high temperature heat exchange shell 100 is equipped with stainless steel support platform 104 near second gas inlet 301 side, and stainless steel support platform 104 is equipped with support grid 102, and heat exchange core body 400 is placed on support grid 102.

[0035] Heat exchange core body 400 is stacked and combined by several honeycomb heat exchange bodies 401.In actual use, different number of honeycomb heat exchange bodies 401 can be selected according to the load demand of actual high temperature heat exchange shell 100, and the number is not particularly limited.Several honeycomb heat exchange bodies 401 can be stacked and combined into heat exchange core body 400 by clamping, bonding, welding and other ways.

[0036] Each honeycomb heat exchange body 401 is a rectangular block, which is provided with a plurality of first through holes 4011 and a plurality of second through holes 4012, each first through hole 4011 is communicated with two opposite sides of the honeycomb heat exchange body 401, each second through hole 4012 is communicated with another two opposite sides of the honeycomb heat exchange body 401, and each first through hole 4011 and each second through hole 4012 are staggered and vertically distributed. The first through holes 4011 on the plurality of honeycomb heat exchange bodies 401 in the high-temperature heat exchange shell 100 jointly constitute a first gas channel, which is communicated with the first gas inlet 201 and the first gas outlet 202, and the second through holes 4012 on the plurality of honeycomb heat exchange bodies 401 in the high-temperature heat exchange shell 100 jointly constitute a second gas channel, which is communicated with the second gas inlet 301 and the second gas outlet 302.

[0037] The plurality of first through holes 4011 on each honeycomb heat exchange body 401 of the utility model are arranged in an N*M rectangular array, and the first through holes 4011 on each row of the rectangular array are mutually left with adaptive gaps, so as to open the second through holes 4012; the plurality of second through holes 4012 on each honeycomb heat exchange body 401 of the utility model are arranged in an N1*M1 rectangular array, and the second through holes 4012 on each row of the rectangular array are arranged at the gaps between two rows of the above-mentioned N*M rectangular array. Wherein, the number of N and M, the number of N1*M1 can be set according to the load demand of the high-temperature heat exchange shell 100, in addition, in order to ensure the ideal heat exchange effect, the total number of the second through holes 4012 on each honeycomb heat exchange body 401 is less than the total number of the first through holes 4011. The N of the honeycomb heat exchange body 401 provided by the utility model is 4, the M is 7, the N1 is 3, and the M1 is 7.

[0038] In addition, the cross-sectional shape of the first through hole 4011 and the second through hole 4012 can be circular, rectangular, triangular or other polygonal, the cross-sectional shape of the first through hole 4011 and the second through hole 4012 of the utility model is circular.

[0039] In addition, according to the temperature demand of the high-temperature heat exchange shell 100, the honeycomb heat exchange body of different materials can be selected, the honeycomb heat exchange body of the utility model is a high-temperature ceramic honeycomb heat exchange body, which can be used at a working temperature of 1500 DEG C, and the material has a larger specific heat capacity, which can realize the waste heat recovery of the ultra-high temperature flue gas and greatly improve the heat exchange efficiency.

[0040] The operation process of the utility model is as follows:

[0041] The high-temperature flue gas generated in the burner of the industrial furnace enters the high-temperature heat exchange shell 100 through the first gas inlet 201, and the high-temperature flue gas flows into the first gas passage. The combustion-supporting gas enters the high-temperature heat exchange shell 100 through the second gas inlet 301, and the combustion-supporting gas flows into the second gas passage. The combustion-supporting gas in the second gas passage exchanges heat with the high-temperature flue gas in the first gas passage, and becomes high-temperature combustion-supporting gas, which is guided out through the second gas outlet 302 and enters the burner to be combusted and heated. At the same time, the high-temperature flue gas in the first gas passage exchanges heat with the combustion-supporting gas in the second gas passage, and is cooled, and then flows out through the second gas outlet 202 and enters the flue gas environmental protection treatment equipment for discharge.

[0042] The above description is only preferred embodiments of the present application, and is not used to limit the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A dual-pass honeycomb high-temperature heat exchange device, characterized by, The high-temperature heat exchange shell (100) is provided with a first gas inlet (201) and a first gas outlet (202) on opposite two side edges respectively; the high-temperature heat exchange shell (100) is provided with a second gas inlet (301) and a second gas outlet (302) on the other opposite two side edges respectively; The high-temperature heat exchange shell (100) is provided with a heat exchange core (400) therein, the heat exchange core (400) is provided with a plurality of first gas passages and a plurality of second gas passages, each first gas passage and each second gas passage are arranged in an upper and lower staggered manner; a plurality of the first gas passages are communicated with the first gas inlet (201) and the first gas outlet (202), and a plurality of the second gas passages are communicated with the second gas inlet (301) and the second gas outlet (302).

2. The dual-pass honeycomb high-temperature heat exchange device of claim 1, wherein, The heat exchange core (400) is composed of a plurality of honeycomb heat exchange bodies (401); Each honeycomb heat exchange body (401) is a rectangular block, which is provided with a plurality of first through holes (4011) and a plurality of second through holes (4012), the first through holes (4011) are communicated with two opposite side surfaces of the honeycomb heat exchange body (401), and the second through holes (4012) are communicated with the other two opposite side surfaces of the honeycomb heat exchange body (401); each first through hole (4011) and each second through hole (4012) are vertically distributed in an upper and lower staggered manner; a plurality of the first through holes (4011) on the plurality of honeycomb heat exchange bodies (401) form the first gas passages, and a plurality of the second through holes (4012) on the plurality of honeycomb heat exchange bodies (401) form the second gas passages.

3. The dual-pass honeycomb high-temperature heat exchange device of claim 2, wherein, A plurality of the first through holes (4011) on each honeycomb heat exchange body (401) are arranged in a large rectangular array, and the first through holes (4011) on two adjacent horizontal rows in the large rectangular array are spaced apart from each other; a plurality of the second through holes (4012) on each honeycomb heat exchange body (401) are arranged in a small rectangular array, and each horizontal row of the second through holes (4012) in the small rectangular array is located between two adjacent horizontal rows of the large rectangular array.

4. The dual-pass honeycomb high-temperature heat exchange device of claim 2, wherein, The cross sections of the first through holes (4011) and the second through holes (4012) on each honeycomb heat exchange body (401) are the same or different.

5. The dual-pass honeycomb high-temperature heat exchange device of claim 2, wherein, The number of the first through holes (4011) on each honeycomb heat exchange body (401) is greater than the number of the second through holes (4012).

6. The dual-pass honeycomb high-temperature heat exchange device of claim 2, wherein, Each honeycomb heat exchange body (401) is a high-temperature ceramic honeycomb heat exchange body.

7. The dual-pass honeycomb high-temperature heat exchange device of claim 1, wherein, A support grid (102) is arranged in the high-temperature heat exchange shell (100) and located on one side of the second gas inlet (301), and the heat exchange core (400) is arranged on the support grid (102).

8. The dual-pass honeycomb high-temperature heat exchange device of claim 1, wherein, The inner surface of the high-temperature heat exchange shell (100) is provided with a high-temperature resistant layer (103).

9. The dual-pass honeycomb high-temperature heat exchanger of claim 1, wherein, An upper cover body (500) is arranged on the side of the high-temperature heat exchange shell (100) opposite to the second gas inlet (301), and the opening of the upper cover body (500) is the second gas outlet (302).

10. The dual-pass honeycomb high-temperature heat exchange device of claim 9, wherein, The inner surface of the upper cover body (500) is provided with a high-temperature resistant layer (103).

Images