CN203223935U

CN203223935U - Plate-type ceramic air pre-heater

Info

Publication number: CN203223935U
Application number: CN2013200080562U
Authority: CN
Inventors: 曹伟强; 李波; 程高锋
Original assignee: Luoyang Ruichang Petro Chemical Equipment Co Ltd
Current assignee: Luoyang Ruichang Environmental Engineering Co ltd
Priority date: 2013-01-08
Filing date: 2013-01-08
Publication date: 2013-10-02
Anticipated expiration: 2023-01-08

Abstract

The utility model belongs to the field of heat-exchanging technology and provides a plate-type air pre-heater. The plate-type ceramic air pre-heater comprises a top cover plate (5), a lower base plate (2) and a column (4), wherein the above three together form a cube. The inner of the plate-type ceramic air pre-heater is provided with a plurality of heat-exchanging plates (6) arranged up and down; the heat-exchanging plate (6) is a U-shaped ceramic plate; a flow channel is formed between an upper and lower adjacent heat-exchanging plates (6), between the topmost layer heat-exchanging plate (6) and the lower base plate (2) and between the top cover plate (5) and a lowest layer heat-exchanging plate (6); two adjacent flow channels are interlaced by 90-degree; and support members in two adjacent sealed flow channels are interlaced by 90-degree. The plate-type ceramic air pre-heater can decrease smoke-evacuating temperature to 100 DEG C below; the air pre-heater possesses good energy saving effect and effectively recovers waste heat of smoke; and energy of heating furnaces is fully utilized due to a decrease of smoke-evacuating temperature, thereby greatly improving efficiency of heating furnaces.

Description

A kind of board-like ceramic air preheater

Technical field

The utility model belongs to technical field of heat exchangers, is specifically related to a kind of board-like ceramic air preheater.

Background technology

In petrochemical industry, power industry, Industrial Boiler and various heating furnace are main energy consumption equipments, under the environment of global energy-conserving and environment-protective, the efficient that improves Industrial Boiler and heating furnace seems particularly important, improve the efficient major measure of Industrial Boiler and heating furnace for reclaiming the waste heat in the flue gas, reduce the discharge flue-gas temperature.The maximum difficult point that reclaims low-temperature flue gas at present is the acid dew piont corrosion problem, and the air preheater that common iron is made can lose efficacy because of the acid corrosion problem at short notice.The flue gas low-temperature dew point corrosion is the technological difficulties that restriction reduces the exhaust gas temperature maximum.In order to avoid dew-point temperature, the flue-gas temperature of discharging arrives about 180 ° of C now now, along with riseing of energy rareness and price, is badly in need of a kind of new product that can effectively reduce exhaust gas temperature on the market.

The utility model content

In order to overcome the deficiencies in the prior art, the purpose of this utility model is to propose a kind of board-like ceramic air preheater.

The utility model adopts following technical scheme for finishing above-mentioned purpose:

A kind of board-like ceramic air preheater, the cube structure of described board-like ceramic air preheater for being constituted by upper cover plate, lower shoe and column; In the board-like ceramic air preheater of cube structure, be provided with a plurality of heat exchanger plates that are arranged above and below; Described heat exchanger plates is the U-shaped ceramic wafer, and this pottery is corundum ceramic or zirconia ceramics or silicon nitride ceramics or silicon carbide ceramics or glass ceramics; Between neighbouring two described heat exchanger plates, between the superiors' heat exchanger plates and the lower shoe, between upper cover plate and the orlop heat exchanger plates and all constitute the fluid passage between neighbouring two described heat exchanger plates, and the mutually wrong 90 ° of settings in adjacent two fluid passages; In each fluid passage, be provided with many rows along transversely arranged support member, and all be pasted with seal in the upper and lower end face of described support member, form several adjacent mutual wrong 90 ° fluid-encapsulated passages, adjacent mutual wrong 90 ° fluid-encapsulated passage is respectively zone of heat liberation and cold fluid pass; Be positioned at mutually wrong 90 ° of interlaced arrangement of support member of adjacent two fluid-encapsulated passages.

Have " people " font or serpentine rag on the plate face of described heat exchanger plates.

Described support member is ceramic supporting element, and this pottery is corundum ceramic or zirconia ceramics or silicon nitride ceramics or silicon carbide ceramics or glass ceramics.

Described support member is column, and the cross sectional shape of described support member is oval; Oval-shaped major axis place direction is circulating direction, and most advanced and sophisticated first contacting with fluid is convenient to fluid and is circulated stably, can not form the whirlpool dead band at the lee face of support member, and pressure drop is little.

Import and export at fluid-encapsulated passage all arrange the marginal branch support member, and paste seal in described marginal branch support member top and bottom.

Described marginal branch support member is ceramic marginal branch support member, and this pottery is corundum ceramic or zirconia ceramics or silicon nitride ceramics or silicon carbide ceramics or glass ceramics.

Described marginal branch support member is the lath-shaped that has strip hole.

Described seal is sealing strip or diaphragm seal, and the material of seal is fluorubber, silicon rubber and varicosity PTFE.

Superpose up and down four jiaos of the fluid-encapsulated passage formed of the described heat exchanger plates of some layers are equipped with column, and the place, post angle of described column arranges L shaped strip seal, thereby reaches the sealing at post angle, prevents the cold and hot fluid short circuit.

Be provided with in order to multi-layer sealed runner is pressed on holding down assembly between upper cover plate and the lower shoe at the two ends of described column; Described holding down assembly comprises double-screw bolt, nut and dish-shaped stage clip; After double-screw bolt passes upper cover plate or lower shoe, load onto dish-shaped stage clip and nut in upper end or the lower end of bolt, screw nut and make upper cover plate and lower shoe apart from minimizing, thereby the heat exchanger plates between holddown plate and the base plate is realized sealing.

A kind of board-like ceramic air preheater that the utility model proposes has adopted described technical scheme, has following beneficial effect:

1, dew-point corrosion resistant can the long-time continuous stable operation

The critical piece heat exchanger plates of a kind of board-like ceramic air preheater that the utility model proposes and support member are all by ceramic making, the corrosion resistance of pottery is strong, it is one of best material of antiacid dew point corrosion, its medium recirculation surface anticorrosion with painting coating of cube, enamel, resin that column and upper cover plate, lower shoe are formed, or anti-corrosion materials such as lining rubber slab, tetrafluoro plate, to resist the corrosion of acid dew point, so can online long period continous-stable operation in the atmosphere of low-temperature flue gas.

2, can large scale make, improve heat exchange area

Because the utility model is module making, so on large-sized pipeline, can be assemblied to form with a plurality of modules, so just increased heat exchange area, improved the heat exchange effect, this is that old-fashioned heat exchanger institute is inaccessiable.

3, simple in structure, stable

Though the utility model framework is rigidity, but all seals all are flexible with holding down assembly, the deformation of pottery heat exchanger plates is very little, thermal stress is little, and owing to be elastic packing between heat exchange plate and the support member, the function of good damping effect and flexible support is arranged, can effectively prevent the brittle break of pottery, improve equipment life, make the long-time running of equipment energy.

4. can reclaim fume afterheat, energy-conserving and environment-protective effectively

Heat exchanger plates of the present utility model is ceramic disc, and it has very strong acid resistance, can not be subjected to the influence of dew point corrosion, so exhaust gas temperature can be dropped to 100 ° below the C, effects of energy conservation and environmental protection is good, has reclaimed fume afterheat effectively.The reduction of exhaust gas temperature makes the energy of heating furnace be fully utilized, and can improve the efficient of heating furnace greatly.

Description of drawings

Fig. 1 is structural front view of the present utility model.

Fig. 2 is the B-B cutaway view of Fig. 1.

Fig. 3 is the A-A cutaway view of Fig. 1.

Fig. 4 is the front view of heat exchanger plates in the utility model.

Fig. 5 is the vertical view of Fig. 4.

Fig. 6 is the front view of marginal branch support member in the utility model.

Fig. 7 is the vertical view of support member in the utility model.

Among the figure: 1, hold down assembly 2, lower shoe, 3, support member, 4, column, 5, upper cover plate, 6, heat exchanger plates, 7, seal, 8, L type sealing strip, 9, the marginal branch support member.

The specific embodiment

With specific embodiment the utility model is illustrated by reference to the accompanying drawings:

As Fig. 1, shown in Figure 3, a kind of board-like ceramic air preheater, the cube structure of described board-like ceramic air preheater for being constituted by upper cover plate 5, lower shoe 2 and column 4; In the board-like ceramic air preheater of cube structure, be provided with a plurality of heat exchanger plates that are arranged above and below 6; Described heat exchanger plates 6 is the U-shaped ceramic wafer, and this pottery is corundum ceramic or zirconia ceramics or silicon nitride ceramics or silicon carbide ceramics or glass ceramics; Between neighbouring two described heat exchanger plates 6, between the superiors' heat exchanger plates and the lower shoe 2, between upper cover plate 5 and the orlop heat exchanger plates and all constitute the fluid passage between neighbouring two described heat exchanger plates 6, and the mutually wrong 90 ° of settings in adjacent two fluid passages; In each fluid passage, be provided with many rows along transversely arranged support member 3, and all be pasted with seal 7 in the upper and lower end face of described support member 3, form and do adjacent mutual wrong 90 a ° fluid-encapsulated passage, adjacent mutual wrong 90 ° fluid-encapsulated passage is respectively zone of heat liberation and cold fluid pass; In conjunction with Fig. 2, be positioned at support member 3 mutually wrong 90 ° of interlaced arrangement of adjacent two fluid-encapsulated passages.

In conjunction with Fig. 7, described support member 3 is column, and the cross sectional shape of described support member 3 is oval; Oval-shaped major axis place direction is circulating direction, and most advanced and sophisticated first contacting with fluid is convenient to fluid and is circulated stably, can not form the whirlpool dead band at the lee face of support member, and pressure drop is little.

In conjunction with Fig. 4, Fig. 5, described heat exchanger plates 6 is that U-shaped is tabular, and " people " font rag is arranged on the plate face.

In conjunction with Fig. 6, the material of described marginal branch support member 9 is ceramic material, and described ceramic material is corundum ceramic or zirconia ceramics or silicon nitride ceramics or silicon carbide ceramics or glass ceramics.

In conjunction with Fig. 6, described marginal branch support member 9 is for having the lath-shaped of strip hole.

Described seal 7 is sealing strip or diaphragm seal, and seal is fluorubber, silicon rubber and varicosity PTFE.

Superpose up and down four jiaos of the fluid-encapsulated passage formed of several described heat exchanger plates are equipped with column 4, and the place, post angle of described column 4 arranges L shaped strip seal, thereby reaches the sealing at post angle, prevents the cold and hot fluid short circuit.

Be provided with at the two ends of described column 4 in order to multi-layer sealed runner is pressed on and hold down assembly 1 between upper cover plate and the lower shoe; Described holding down assembly 1 comprises double-screw bolt, nut and dish-shaped stage clip; After double-screw bolt passes upper cover plate or lower shoe, load onto dish-shaped stage clip and nut in upper end or the lower end of bolt, screw nut and make upper cover plate and lower shoe apart from minimizing, thereby the heat exchanger plates between holddown plate and the base plate is realized sealing.

Claims

1. board-like ceramic air preheater, described board-like ceramic air preheater are the cube structure that is made of upper cover plate (5), lower shoe (2) and column (4); In the board-like ceramic air preheater of cube structure, be provided with a plurality of heat exchanger plates that are arranged above and below (6); It is characterized in that: described heat exchanger plates (6) is the U-shaped ceramic wafer, and this pottery is corundum ceramic or zirconia ceramics or silicon nitride ceramics or silicon carbide ceramics or glass ceramics; Between neighbouring two described heat exchanger plates (6), between the superiors' heat exchanger plates (6) and the lower shoe (2), between upper cover plate (5) and the orlop heat exchanger plates (6) and all constitute the fluid passage between neighbouring two described heat exchanger plates (6), and the mutually wrong 90 ° of settings in adjacent two fluid passages; In each fluid passage, be provided with many rows along transversely arranged support member (3), and all be pasted with seal (7) in the upper and lower end face of described support member (3), form several adjacent mutual wrong 90 ° fluid-encapsulated passages, adjacent mutual wrong 90 ° fluid-encapsulated passage is respectively zone of heat liberation and cold fluid pass; Be positioned at mutually wrong 90 ° of interlaced arrangement of support member of adjacent two fluid-encapsulated passages.

2. a kind of board-like ceramic air preheater according to claim 1 is characterized in that: have " people " font or serpentine rag on the plate face of described heat exchanger plates (6).

3. a kind of board-like ceramic air preheater according to claim 1, it is characterized in that: the material of described support member (3) is ceramic material, described ceramic material is corundum ceramic or zirconia ceramics or silicon nitride ceramics or silicon carbide ceramics or glass ceramics.

4. a kind of board-like ceramic air preheater according to claim 1 is characterized in that: described support member (3) is column, and the cross sectional shape of described support member be ellipse; Oval-shaped major axis place direction is circulating direction, most advanced and sophisticated first contacting with fluid.

5. a kind of board-like ceramic air preheater according to claim 1, it is characterized in that: the import and export at fluid-encapsulated passage all arrange marginal branch support member (9), and described marginal branch support member (9) is for having the lath-shaped of strip hole; Paste seal (7) in described marginal branch support member (9) top and bottom, described marginal branch support member (9) is ceramic marginal branch support member, and this pottery is corundum ceramic or zirconia ceramics or silicon nitride ceramics or silicon carbide ceramics or glass ceramics.

6. a kind of board-like ceramic air preheater according to claim 1, it is characterized in that: described seal (7) is sealing strip or diaphragm seal, and the material of seal (7) is fluorubber, silicon rubber and varicosity PTFE.

7. a kind of board-like ceramic air preheater according to claim 1 is characterized in that: superpose up and down four jiaos of the fluid-encapsulated passage formed of the described heat exchanger plates of some layers are equipped with column, and the place, post angle of described column arranges L shaped strip seal.

8. a kind of board-like ceramic air preheater according to claim 1 is characterized in that: be provided with at the two ends of described column in order to multi-layer sealed runner is pressed on holding down assembly between upper cover plate and the lower shoe (1); Described holding down assembly (1) comprises double-screw bolt, nut and dish-shaped stage clip; After double-screw bolt passes upper cover plate or lower shoe, load onto dish-shaped stage clip and nut in upper end or the lower end of bolt.