CN210485768U

CN210485768U - Heat accumulating type catalytic combustion purification device

Info

Publication number: CN210485768U
Application number: CN201921184504.8U
Authority: CN
Inventors: 刘颖成; 刘艳明; 周永辉; 张国强
Original assignee: Dongguan Kanglai Environmental Protection Technology Co Ltd
Current assignee: Dongguan Kanglai Environmental Protection Technology Co Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-05-08
Anticipated expiration: 2029-07-25

Abstract

The utility model relates to a heat accumulation formula catalytic combustion purifier, including the furnace body, the furnace body is cylindric, and furnace body from the top down is heating chamber, catalysis room, regenerator, air inlet chamber and air discharge chamber in proper order. The heat pipe can use the heat of the heat to preheat the waste gas in the next cycle, the waste gas enters the heating chamber after being preheated, and the heating chamber can achieve the temperature required by combustion without preheating the waste gas, and can recycle the heat flowing out of the heating chamber again. The utility model discloses can make full use of waste heat carry out the heat exchange to waste gas, have that whole process consumes energy less, energy-conserving efficient effect.

Description

Heat accumulating type catalytic combustion purification device

Technical Field

The utility model belongs to the technical field of exhaust-gas treatment's technique and specifically relates to a heat accumulation formula catalytic combustion purifier is related to.

Background

The existing catalytic combustion device provides a unique economic solution for pollutant treatment, and organic waste gas is treated by a catalytic technology, so that the purification efficiency is high, the energy consumption is low, products are harmless carbon dioxide and water, and no secondary pollution is caused. The catalytic purification efficiency can reach more than 97 percent generally. Is the first choice technology of high concentration and small flow organic waste gas. The catalytic combustion is a combustion method in which combustible substances in a harmful gas are decomposed and oxidized at a relatively low temperature by using a suitable catalyst. The combustible is burnt under the action of the catalyst, and compared with direct combustion, the catalytic combustion is flameless combustion, the catalytic combustion temperature is lower, and the combustion ratio is complete, so that the method is suitable for occasions with high safety requirements.

The purification principle of the existing catalytic combustion device is as follows: the pretreated waste gas enters an activated carbon adsorption box for adsorption and concentration, the activated carbon is subjected to desorption treatment after adsorption saturation, the concentration of the desorbed waste gas is dozens of or even hundreds of times of that of the original waste gas, the concentrated waste gas enters a catalytic combustor and undergoes flameless combustion under the catalytic action of a noble metal catalyst at 200-400 ℃, and finally, the concentrated waste gas is oxidized and decomposed into non-toxic and harmless gas, such as water and carbon dioxide. The reacted gas passes through a heat exchanger, the heat is recycled, and then the gas is discharged into the atmosphere through a chimney.

In a conventional integrated box-type catalytic combustion purification device for organic waste gas, which is disclosed in patent document No. CN206786740U, a heat exchange chamber is formed by horizontally connecting a plurality of heat exchangers in series, an electric heating tube and an electric heating element are arranged in an electric heating chamber, a catalytic reactor is arranged in a reaction chamber, and the device is further provided with an air inlet and an air outlet. This prior art adopts square chest integral structure, concentrates on box structure's inside with heat transfer room, electric heating room and reacting chamber, reduces device area, and this prior art device can utilize the heat that catalytic combustion reaction produced to heat organic waste gas simultaneously, and with organic waste gas heat transfer in the heat transfer room, the purification gas after the cooling passes through the gas vent and discharges, realizes this prior art catalytic combustion purification process promptly.

The above prior art solutions have the following drawbacks: when the heating chamber receives gas to be treated, because the gas temperature is lower, the low-temperature waste gas is transferred from the high-temperature heating chamber, partial heat energy is lost in the heating chamber, and meanwhile, the heating chamber must be continuously heated to reach the combustion catalysis temperature, and meanwhile, the exhaust temperature is higher after the gas is purified, so that the waste heat energy after the gas is catalytically oxidized is not fully utilized, and the energy consumption is serious.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can be with higher temperature recycle's heat accumulation formula catalytic combustion purifier behind the gas purification, make the exhaust gas temperature decline, reduce the power consumption simultaneously.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the heat accumulating type catalytic combustion purification device comprises a furnace body, wherein a heating chamber is arranged at the upper part in the furnace body, a catalytic chamber is arranged below the heating chamber, the heating chamber is communicated with the catalytic chamber, an air inlet chamber and an exhaust chamber are arranged at the lower part of the catalytic chamber, the air inlet chamber is connected with an air inlet pipe, the exhaust chamber is connected with an exhaust pipe, and a heat accumulating chamber is arranged below the catalytic chamber; the catalytic chamber is communicated with the heat storage chamber, and the catalytic chamber and the heat storage chamber are both circumferentially divided into a plurality of independent areas; the heat-conducting pipes are filled in the heat storage chamber, a rotating piece with a vertically arranged rotating shaft is arranged below the heat storage chamber, the upper end of the rotating piece is communicated with the heat storage chamber, the lower end of the rotating piece is communicated with the exhaust chamber, and an air inlet area and an exhaust area isolation area which are mutually sealed are circumferentially separated in a cavity of the rotating piece; the air inlet area and the air outlet area are separated by an isolation area; the side of the rotating piece is provided with an air inlet, and the lower part of the rotating piece is provided with an air outlet.

By adopting the technical scheme, the heating chamber can carry out combustion treatment on the waste gas, the catalyst in the catalytic chamber can adsorb and decompose partial harmful ingredients in the gas, and meanwhile, the catalyst can also reduce the activation energy of pollutants in the gas, so that the gas can be conveniently and fully decomposed in the heating chamber; the air inlet area is mainly used for sending waste gas to be treated into the heat storage chamber; the exhaust area is mainly used for sending the purified gas into an exhaust port to be exhausted; the isolation area mainly has the function of buffering the air exhaust area and the air intake area when the rotating piece rotates, so that the fluctuation and mutual interference of air pressure are reduced. An isolation area is arranged between the air inlet area and the air outlet area, so that the air outlet area and the air inlet area can be separated, air flow is prevented from being connected in series, and the working efficiency is improved. The gas which passes through the heating chamber has higher temperature and can transfer heat to the heat conduction pipe of the heat storage chamber when passing through the heat storage chamber, the temperature of the gas is reduced, and the temperature of the heat storage chamber is increased; in the rotating process of the rotating piece, the air sweeping area further blows the waste gas conveyed by the air inlet area into the heat storage chamber with the raised temperature, and the gas is preheated; the preheated catalyst can more easily reach the conditions required by catalytic combustion; because the gas is preheated, the heating chamber has no too much heat loss, and the heating chamber can always keep higher temperature; meanwhile, the heat of the gas output from the heating chamber is transferred to the heat storage chamber again, so that the separated heat storage chambers cool the clean gas and preheat the waste gas in turn and uninterruptedly along with the rotation of the rotating piece, the waste heat energy after the gas is catalyzed and oxidized is fully utilized, and the energy-saving and environment-friendly effects are achieved.

The utility model discloses further set up to: and a motor is arranged in the exhaust chamber and drives the rotating piece to rotate.

Through adopting above-mentioned technical scheme, the output shaft and the rotating member of motor are connected, can realize the rotation of rotating member.

The utility model discloses further set up to: and a layer of heat shield is arranged outside the motor.

By adopting the technical scheme, the heat shield can separate the motor from the high-temperature environment of the furnace body, and the normal operation of the motor is maintained.

The utility model discloses further set up to: the number of the air inlet areas and the number of the air exhaust areas are five, the five air inlet areas are continuously arranged, and the five air exhaust areas are continuously arranged; the isolation areas are four in number, and every two isolation areas separate the air inlet area from the air outlet area.

By adopting the technical scheme, the five air inlet areas and the five air outlet areas can convert waste gas to the maximum extent, and the discharged gas is ensured to be oxidized and reduced into clean and harmless gas during heating; the isolation area is arranged at the two ends of the gas inlet area and plays a role in buffering the gas inlet path and the gas outlet path, so that the gas has enough time to be conveyed in the heat storage body and the catalytic chamber.

The utility model discloses further set up to: the heat conduction pipe in the heat storage chamber is made of ceramic.

By adopting the technical scheme, the ceramic has good heat conduction effect, stable property, hardness and durability, and is not easy to corrode by waste gas.

The utility model discloses further set up to: the heat conduction pipe is a vertically arranged pipeline, the cross section of the heat conduction pipe is hexagonal, and the plurality of heat conduction pipes are mutually spliced to form a honeycomb shape.

By adopting the technical scheme, compared with a triangle or a square, the hexagon can save materials to the maximum extent under the same area, so that the material cost is saved; the hexagon can be embedded without gaps, so that the firm strength of the structure can be ensured.

The utility model discloses further set up to: the furnace body is characterized in that a heat insulation layer is arranged on the inner side wall of the furnace body, and one side of the vertical partition plate is inserted into the heat insulation layer.

By adopting the technical scheme, the heat generated in the furnace body can be kept in the furnace body as far as possible, the heat loss is reduced, the heat production is reduced, and the production cost is saved.

The utility model discloses further set up to: and the upper and lower ports of the rotating piece are provided with sealing rings.

Through adopting above-mentioned technical scheme, the position of revolving part and exhaust chamber, regenerator handing-over plays sealed effect, can prevent that gaseous cluster, calorific loss's condition from taking place.

To sum up, the utility model discloses a beneficial technological effect does:

1. after the gas is purified, the heat can be recycled, the energy consumption is reduced, and the production cost is saved;

2. the structure of the heat storage chamber is reasonable, and the utilization efficiency of heat energy is high;

3. the air tightness is good, and the heat preservation and insulation effect is good.

Drawings

Fig. 1 is a schematic structural view of the regenerator combustion purification apparatus of the present invention.

FIG. 2 is a schematic cross-sectional view of the structure of the catalytic chamber of the furnace body.

Fig. 3 is a schematic view of a partial structure of the regenerator of the present invention.

Fig. 4 is a schematic structural view of the rotating member of the present invention.

In the figure, 1, a furnace body; 11. a heating chamber; 111. an ignition port; 12. a heat-insulating layer; 14. a vertical partition plate; 21. a catalyst chamber; 22. a regenerator; 221. a heat conducting pipe; 3. a rotating member; 31. a seal ring; 32. an air intake zone; 33. an exhaust area; 34. an isolation region; 35. a motor; 351. a base; 352. a heat shield; 36. a rotary wing; 37. an air inlet; 38. an exhaust port; 4. An air intake chamber; 41. an air inlet pipe; 5. an exhaust chamber; 51. and (4) exhausting the gas.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a heat accumulating type catalytic combustion purifier, including furnace body 1, furnace body 1 is cylindric, and furnace body 1 is from the top down in proper order heating chamber 11, five parts of catalysis room 21, regenerator 22, inlet chamber 4 and exhaust chamber 5.

The inner wall of the furnace body 1 is provided with a heat-insulating layer 12, the heat-insulating layer 12 is made of glass wool materials with good heat-insulating effect, and the heat-insulating layer 12 can keep most of heat generated by the heating chamber 11 in the furnace body 1, thereby reducing the heat loss of the furnace body 1 system and reducing the energy consumption.

The top of the heating chamber 11 is provided with an ignition port 111, the ignition port 111 can ignite the heating chamber 11, organic matters in the waste gas are combusted, and the organic waste gas after full combustion generates pollution-free water and carbon dioxide.

The catalytic chamber 21 is communicated with the heating chamber 11, and vertical partition plates 14 arranged in the circumferential direction are arranged in the catalytic chamber 21 and the heat storage chamber 22. The vertical partition 14 divides the catalyst chamber 21 and the regenerator chamber 22 into fan-shaped areas (see fig. 2) which are not communicated with each other, and the catalyst chamber 21 is filled with a catalyst. The catalyst is prepared by taking a honeycomb ceramic material as a carrier and taking noble metal as an active component, and has the characteristics of high catalytic activity, good thermal stability, long service life, small airflow resistance and the like. The catalyst can enrich organic matters in the waste gas from the lower part, and simultaneously reduce the activation energy of organic matter reaction, so that the organic matters can be fully combusted after entering the heating chamber 11.

The catalytic chamber 21 communicates with the heat storage chamber 22, and vertical heat conductive pipes 221 are provided in each sector area of the heat storage chamber 22, and the cross section of each heat conductive pipe 221 is hexagonal (see fig. 3). The heat pipe 221 is made of ceramic, which has good thermal conductivity, can maintain stable properties at high temperature, is not easily corroded by exhaust gas, and is solid and durable.

The air inlet chamber 4 is communicated with the heat storage chamber 22, four air inlet pipes 41 are arranged on the periphery of the air inlet chamber 4, and the air inlet pipes 41 continuously convey waste gas into the air inlet chamber 4. The middle of the air inlet chamber 4 is provided with a rotating part 3, and the upper and lower ports of the rotating part 3 are respectively abutted with the upper and lower clapboards of the air inlet chamber 4.

Referring to fig. 4, fourteen rotary wings 36 are provided in the rotary member 3, the fourteen rotary wings 36 circumferentially partition the rotary member 3 into fourteen regions, five of which are connected to each other to form the intake region 32 and five of which are connected to each other to form the exhaust region 33, and the intake region 32 and the exhaust region 33 are symmetrically disposed about the central axis of the rotary member 3; four areas between the intake area 32 and the exhaust area 33 are isolation areas 34.

The upper end of the rotating piece 3 is provided with an opening corresponding to the positions of the air inlet area 32 and the air outlet 38, the opening is communicated with the heat storage chamber 22, the upper port of the rotating piece 3 is provided with a sealing ring 31, and the sealing ring 31 is abutted against the top plate of the air inlet chamber 4; the outer side surface of the rotating piece 3 is provided with an air inlet 37 corresponding to the air inlet area 32, and the air inlet 37 is communicated with the air inlet chamber 4; the air inlet pipe 41 continuously conveys the waste gas to the air inlet chamber 4, the waste gas enters the air inlet area 32 and enters the heat storage chamber 22 through the opening at the upper end part of the rotating piece 3; the rotary piece 3 is provided with an exhaust port 38 corresponding to the position below the exhaust area 33, the exhaust port 38 is communicated with the exhaust chamber 5, the lower end of the rotary piece 3 is also provided with a ring-shaped sealing ring 31, and the sealing ring 31 is abutted with the bottom plate of the air inlet chamber 4; the exhaust pipe 51 is connected to the exhaust chamber 5.

An exhaust pipe 51 is connected to a side wall of the exhaust chamber 5 to exhaust the purified gas to the outside of the furnace body 1. A motor 35 is arranged in the exhaust chamber 5, the motor 35 is fixedly arranged on a base 351 in the exhaust chamber 5, and a layer of heat insulation cover 352 is covered on the outer side of the motor 35; the output shaft of the motor 35 drives the rotating member 3 to rotate. After the gas is purified, the clean gas carries heat, the exhaust gas exchanges heat with the heat conduction pipes 221 in the heat storage chamber 22, the heat conduction pipes 221 absorb heat, the exhaust gas is preheated, and meanwhile, the heat conduction pipes 221 in the heat storage chamber 22 are cooled; the cooled heat pipe 221 can absorb the heat of the clean gas. With the rotation of the rotary member 3, the exhaust gas continuously cools five sectors of the heat storage chamber 22, and the clean gas heats the other five sectors of the heat storage chamber 22, so that the heat of the heating chamber 11 is continuously utilized by the heat storage chamber 22 to preheat the exhaust gas, and the heat is circulated in the furnace body 1.

The implementation principle of the embodiment is as follows: waste gas enters the gas inlet chamber 4 from the gas inlet pipe 41, the waste gas in the gas inlet chamber 4 enters the gas inlet area 32 from the gas inlet 37 on the side surface of the rotating member 3, the waste gas in the gas inlet area 32 flows upwards all the time, firstly passes through the heat storage chamber 22 and then passes through the catalytic chamber 21, after the activation energy of reactants in the waste gas is reduced by the catalytic chamber 21, the waste gas enters the heating chamber 11 for heating and combustion, organic matters in the waste gas after combustion are oxidized and decomposed into water and carbon dioxide to obtain clean gas, and at the moment, the temperature of the gas is higher than the temperature of the gas when the gas comes in from the heating chamber; the treated gas diffuses from the heating chamber 11 to the catalytic chamber 21, and then enters the heat storage chamber 22 from the catalytic chamber 21, the heat transfer pipe 221 in the heat storage chamber 22 is heated by the gas with higher temperature, meanwhile, the heat of the gas is transferred to the heat transfer pipe 221, the gas is cooled, and the cooled gas is discharged from the exhaust port 38 at the bottom of the rotating member 3. Because the discharged gas in the heat storage chamber 22 transfers heat to the heat conduction pipe 221, the heat conduction pipe 221 can use the heat for preheating the waste gas in the next cycle, the waste gas enters the heating chamber 11 after being preheated, the heating chamber 11 can reach the temperature required during combustion without preheating the waste gas, the heat flowing out from the heating chamber 11 can be recycled, and the energy-saving and efficient gas purification effect is achieved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. Heat accumulation formula catalytic combustion purifier, including furnace body (1), upper portion in furnace body (1) is equipped with heating chamber (11), heating chamber (11) below is equipped with catalytic chamber (21), heating chamber (11) and catalytic chamber (21) intercommunication, the lower part of catalytic chamber (21) is equipped with air inlet chamber (4) and air discharge chamber (5), air inlet chamber (4) are connected with intake pipe (41), air discharge chamber (5) are connected with blast pipe (51), its characterized in that: a regenerative chamber (22) is arranged below the catalytic chamber (21); the catalytic chamber (21) is communicated with the heat storage chamber (22), and the catalytic chamber (21) and the heat storage chamber (22) are both circumferentially divided into a plurality of independent areas; the heat storage chamber (22) is filled with a heat conduction pipe (221), a rotating piece (3) with a vertically arranged rotating shaft is arranged below the heat storage chamber (22), the upper end of the rotating piece (3) is communicated with the heat storage chamber (22), the lower end of the rotating piece (3) is communicated with an exhaust chamber (5), and an air inlet area (32) and an exhaust area (33) isolation area (34) which are mutually sealed are circumferentially separated in a cavity of the rotating piece (3); the air inlet area (32) and the air outlet area (33) are separated by an isolation area (34); the side of the rotating piece (3) is provided with an air inlet (37), and the lower part of the rotating piece (3) is provided with an air outlet (38).

2. A regenerative catalytic combustion purification apparatus as claimed in claim 1, wherein: a motor (35) is arranged in the exhaust chamber (5), and the motor (35) drives the rotating piece (3) to rotate.

3. A regenerative catalytic combustion purification apparatus as claimed in claim 2, wherein: and a layer of heat insulation cover (352) is arranged outside the motor (35).

4. A regenerative catalytic combustion purification apparatus as claimed in claim 1, wherein: the number of the air inlet areas (32) and the number of the air outlet areas (33) are five, the five air inlet areas (32) are continuously arranged, and the five air outlet areas (33) are continuously arranged; the isolation areas (34) are four in number, and every two isolation areas (34) separate the air inlet area (32) from the air outlet area (33).

5. A regenerative catalytic combustion purification apparatus as claimed in claim 1, wherein: the heat conduction pipe in the heat storage chamber (22) is made of ceramic materials.

6. A regenerative catalytic combustion purification apparatus as claimed in claim 1, wherein: the cross section of the heat conduction pipe (221) is hexagonal, and the plurality of heat conduction pipes (221) are spliced with one another to form a honeycomb shape.

7. A regenerative catalytic combustion purification apparatus as claimed in claim 1, wherein: and a heat-insulating layer (12) is arranged on the inner side wall of the furnace body (1).

8. A regenerative catalytic combustion purification apparatus as claimed in claim 1, wherein: and the upper and lower ports of the rotating piece (3) are provided with sealing rings (31).